JP6885178B2 - Manufacturing method of organic electroluminescence display device, laminate for organic EL display device, and organic electroluminescence display device - Google Patents

Description

The present invention relates to an organic electroluminescence display device having a first layer having a barrier property, a laminate for an organic EL display device, and a method for manufacturing an organic electroluminescence display device.

In recent years, with the development of personal computers, especially portable personal computers, the demand for display devices has increased. Recently, the penetration rate of home-use LCD TVs is increasing, and smartphones and tablet terminals are also becoming widespread, so that the market for display devices is expanding more and more.

Such display devices include, for example, organic electroluminescence display devices. With the widespread use of organic electroluminescence display devices in a wide range of fields, improvement in reliability is required. Hereinafter, organic electroluminescence may be abbreviated as organic EL.

By the way, the organic EL display device has the following configuration, for example. FIG. 9 is a schematic cross-sectional view showing an example of a conventional organic EL display device. As shown in FIG. 9, the conventional organic EL display device 100'is, for example, the first base material 10a, the second base material 10b, and the organic EL layer 50 (here, the red light emitting layer 50R, the green light emitting layer 50G, and the green light emitting layer 50G. The organic EL element base material 40 provided with the blue light emitting layer 50B) and the laminated body 20 having the barrier layer 30 are bonded together via the adhesive layer 60. An organic EL display device having such a configuration can be manufactured by laminating two members or laminates via an adhesive layer, and therefore, for example, the first base material 10a or the second base material 10a in FIG. It is possible to obtain an organic EL display device having a higher yield than in the case of manufacturing by laminating each member in order from one of the materials 10b.

JP-A-2007-206241 Patent No. 4897341 Patent No. 4832887 Patent No. 4878825

The inventors of the present invention examined the reliability of an organic EL display device having a configuration as shown in FIG. Specifically, the organic EL display device was subjected to a bending durability test with a bending radius of 3 mm more than 200,000 times in an environment of a temperature of 60 ° C. and a humidity of 90%, and the organic EL display device was subjected to high temperature and high humidity. The bending durability in the above was examined. As a result, for example, in the organic EL display device having the configuration shown in FIG. 9, there is a problem that the adhesive layer 60 is peeled off. That is, in the organic EL display device having the conventional configuration, there is a problem in bending durability under high temperature and high humidity.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an organic EL display device having excellent bending durability under high temperature and high humidity.

The inventors of the present invention have conducted diligent research in order to solve the above problems. Specifically, the cause of the problem that the adhesive layer is peeled off when the above-mentioned bending durability test is performed on a conventional organic EL display device under high temperature and high humidity has been repeatedly investigated. As a result, the inventors of the present invention have obtained the finding that the moisture has some influence on the adhesive material contained in the adhesive layer due to the moisture entering the adhesive layer. The inventors of the present invention have completed the present invention based on such findings.

That is, in the present invention, one of the first base material, the first laminated body having the first layer arranged on one surface of the first base material, the second base material, and the second base material. An organic EL element base material having an organic EL layer arranged on a surface, a second laminated body having a second layer arranged on a surface opposite to the second base material of the organic EL layer, and the above. It has a first laminated body and an adhesive layer sandwiched between the second laminated bodies, and the thickness of the first layer is 450 nm or more and 600 nm or less, and the surface of the first laminated body on the first layer side and The surfaces of the second laminate on the second layer side face each other via the adhesive layer, and the first layer has an inorganic layer and an organic layer arranged on one surface of the inorganic layer. Provided is an organic EL display device characterized by the above.

According to the present invention, in an organic EL display device having a structure in which a first laminated body and a second laminated body are bonded via an adhesive layer, the first laminated body on the opposite side of the organic EL element base material is used. By having the first layer having a predetermined thickness, the adhesive layer can be sandwiched by the second layer in the first layer and the second laminated body. Therefore, when a bending durability test is performed on an organic EL display device under high temperature and high humidity, peeling due to the intrusion of moisture into the adhesive layer can be suppressed, and the organic EL having excellent bending durability. It can be a display device.

In the present invention, in the first layer, the inorganic layer and the organic layer are repeatedly laminated a plurality of times, and the thickness of the inorganic layer is preferably 11 nm or more and less than 200 nm. The first layer has a structure in which an inorganic layer and an organic layer are repeatedly laminated a plurality of times, and since the inorganic layer has a predetermined thickness, a bending durability test is performed on an organic EL display device under high temperature and high humidity. When this is done, peeling due to the intrusion of moisture into the adhesive layer can be effectively suppressed, and an organic EL display device having more excellent bending durability can be obtained.

Further, in the present invention, one of the first base material, the first laminated body having the first layer arranged on one surface of the first base material, the second base material, and the second base material. An organic EL element base material having an organic EL layer arranged on a surface, a second laminated body having a second layer arranged on a surface opposite to the second base material of the organic EL layer, and the above. It has a first laminated body and an adhesive layer sandwiched between the second laminated bodies, and the thickness of the first layer is 450 nm or more and 1000 nm or less, and the surface of the first laminated body on the first layer side and The surfaces of the second laminate on the second layer side face each other via the adhesive layer, and the first layer has an inorganic layer and an organic layer arranged on one surface of the inorganic layer. Provided is an organic EL display device characterized in that the thickness of the inorganic layer is 11 nm or more and less than 200 nm.

According to the present invention, in an organic EL display device having a structure in which a first laminated body and a second laminated body are bonded via an adhesive layer, the first laminated body on the opposite side of the organic EL element base material is used. By having a first layer having a predetermined thickness and including an inorganic layer having a predetermined thickness, the adhesive layer can be sandwiched between the first layer and the second layer in the second laminated body. Therefore, when a bending durability test is performed on an organic EL display device under high temperature and high humidity, peeling due to the intrusion of moisture into the adhesive layer can be suppressed, and the organic EL having excellent bending durability. It can be a display device.

In the present invention, the water vapor permeability of the first laminated body ^{is preferably 9.0 × 10 -2} g / m ² days or less. When the water vapor transmittance of the first laminated body is within a predetermined range, it is possible to effectively suppress the invasion of water into the adhesive layer from the first laminated body side. Therefore, it is possible to obtain an organic EL display device having better bending durability.

Further, the present invention has a base material and a first layer arranged on one surface of the base material, and the first layer is arranged on one surface of the inorganic layer and the inorganic layer. Provided is a laminate for an organic EL display device, which has an organic layer and has a thickness of 450 nm or more and 600 nm or less, and is used for an organic EL display device.

According to the present invention, when the laminate for an organic EL display device of the present invention and another laminate having an organic EL element base material are bonded together via an adhesive layer to form an organic EL display device, the organic EL display device is organic. By having the first layer having a predetermined thickness in the laminate for the EL display device, even when the bending durability test is performed on the organic EL display device under high temperature and high humidity, the adhesive layer can be applied. It is possible to obtain a laminate for an organic EL display device which can suppress peeling due to the intrusion of moisture and can obtain an organic EL display device having excellent bending durability.

In the present invention, the water vapor permeability ^{is preferably 9.0 × 10 -2} g / m ² days or less. When an organic EL display device of the present invention is formed by laminating a laminate for an organic EL display device of the present invention and another laminate having an organic EL element base material via an adhesive layer, the organic EL display device of the present invention is formed. Since the water vapor permeability of the laminate for organic EL is within a predetermined range, even when the bending durability test is performed on the organic EL display device under high temperature and high humidity, from the laminate side for the organic EL display device. It is possible to effectively suppress the invasion of water into the adhesive layer of the above. Therefore, it is possible to obtain a laminated body for an organic EL display device capable of obtaining an organic EL display device having more excellent bending durability.

Further, the present invention comprises a first laminated body preparation step of preparing a first laminated body having a first base material and a first layer arranged on one surface of the first base material, and a second base material. An organic EL element base material having an organic EL layer arranged on one surface of the second base material, and a second layer of the organic EL layer arranged on a surface opposite to the second base material. The surface of the first laminated body on the first layer side and the surface of the second laminated body on the second layer side face each other in the second laminated body preparation step of preparing the second laminated body having the above. The organic EL display comprises a bonding step of bonding via an adhesive layer, and the first layer has an inorganic layer and an organic layer arranged on one surface of the inorganic layer. Provided is a method for manufacturing an apparatus.

According to the present invention, in an organic EL display device having a structure in which a first laminated body and a second laminated body are bonded via an adhesive layer, the first laminated body on the side opposite to the organic EL element base material is the first. By having one layer, the adhesive layer can be sandwiched by the second layer in the first layer and the second laminated body. Therefore, when a bending durability test is performed on an organic EL display device under high temperature and high humidity, peeling due to the intrusion of moisture into the adhesive layer can be suppressed, and the organic EL having excellent bending durability. A display device can be obtained.

The present invention can provide an organic EL display device having excellent bending durability under high temperature and high humidity.

It is the schematic sectional drawing which shows an example of the organic EL display device of this invention. It is the schematic sectional drawing which shows an example of the 1st layer in this invention. It is the schematic sectional drawing which shows the other example of the 1st layer in this invention. It is the schematic sectional drawing which shows an example of the 1st laminated body in this invention. It is the schematic sectional drawing which shows the other example of the 1st laminated body in this invention. It is a schematic sectional drawing which shows an example of the 2nd laminated body in this invention. It is the schematic sectional drawing which shows the other example of the 2nd laminated body in this invention. It is a schematic process diagram which shows an example of the manufacturing method of the organic EL display device of this invention. It is schematic cross-sectional view which shows an example of the conventional organic EL display device.

Hereinafter, an organic EL display device, a laminate for an organic EL display device, and a method for manufacturing the organic EL display device will be described.

A. Organic EL display device The organic EL display device of the present invention includes a first base material, a first laminate having a first layer arranged on one surface of the first base material, a second base material, and the above. It has an organic EL element base material having an organic EL layer arranged on one surface of the second base material, and a second layer of the organic EL layer arranged on a surface opposite to the second base material. It has a second laminated body, an adhesive layer sandwiched between the first laminated body and the second laminated body, and the thickness of the first layer is 450 nm or more and 600 nm or less, and the first laminated body of the first laminated body has a thickness of 450 nm or more and 600 nm or less. The surface on the first layer side and the surface on the second layer side of the second laminated body face each other via the adhesive layer, and the first layer is arranged on one surface of the inorganic layer and the inorganic layer. It is an apparatus characterized by having a formed organic layer.

Further, the organic EL display device of the present invention includes a first base material, a first laminated body having a first layer arranged on one surface of the first base material, a second base material, and the second base material. A second having an organic EL element base material having an organic EL layer arranged on one surface of the base material and a second layer of the organic EL layer arranged on a surface opposite to the second base material. It has a laminated body and an adhesive layer sandwiched between the first laminated body and the second laminated body, and the thickness of the first layer is 450 nm or more and 1000 nm or less, and the first layer of the first laminated body. The side surface and the surface on the second layer side of the second laminated body face each other via the adhesive layer, and the first layer is arranged on one surface of the inorganic layer and the inorganic layer. The device has an organic layer, and the thickness of the inorganic layer is 11 nm or more and less than 200 nm.

Hereinafter, the inorganic layer and the organic layer may be described with numbers such as a first inorganic layer, a first organic layer, a second inorganic layer, and a second organic layer.

The phase difference adjusting base material of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing an example of the organic EL display device of the present invention. The organic EL display device 100 shown in FIG. 1 includes a first laminated body 20a having a first base material 10a and a first layer 30a arranged on one surface of the first base material 10a, a second base material 10b, and the like. The organic EL element base material 40 provided with the organic EL layer 50 (here, the red light emitting layer 50R, the green light emitting layer 50G, and the blue light emitting layer 50B) is arranged on the surface of the organic EL element base material 40 on the organic EL layer 50 side. It has a second laminated body 20b having the second layer 30b, and an adhesive layer 60 sandwiched between the first laminated body 20a and the second laminated body 20b. In the organic EL display device 100 of the present invention, as shown in FIG. 1, the surface of the first laminated body 20a on the first layer 30a side and the surface of the second laminated body 20b on the second layer 30b side are adhered to each other. It has a structure that faces each other through the layer 60.

FIG. 2 is a schematic cross-sectional view showing an example of the first layer in the organic EL display device of the present invention. As shown in FIG. 2, the first layer 30a in the present invention has a first inorganic layer 31a and a first organic layer 31b arranged on one surface of the first inorganic layer 31a.

According to the present invention, in an organic EL display device having a structure in which a first laminated body and a second laminated body are bonded via an adhesive layer, the first laminated body on the side opposite to the organic EL element base material is the first. By having one layer, the adhesive layer can be sandwiched by the second layer in the first layer and the second laminated body. Therefore, when a bending durability test is performed on an organic EL display device under high temperature and high humidity, peeling due to the intrusion of moisture into the adhesive layer can be suppressed, and the organic EL having excellent bending durability. It can be a display device.

The reason why such an effect can be obtained will be specifically described below.
First, as shown in FIG. 9, the conventional organic EL display device includes the first layer 30 only on one surface of the adhesive layer 60, that is, the surface on the organic EL element base material 40 side. Therefore, for example, when a bending durability test is performed on an organic EL display device under high temperature and high humidity, even if it is possible to suppress the invasion of moisture into the adhesive layer from the surface side having the first layer. It was difficult to suppress the invasion of water into the adhesive layer from the surface side that does not have the first layer. Further, the first layer in the conventional organic EL display device is a member that is arranged on the surface of the organic EL element base material and is originally intended to suppress the invasion of water and oxygen into the organic EL element base material. , It is not a member arranged assuming the intrusion of moisture into the adhesive layer.
On the other hand, in the present invention, the adhesive layer is sandwiched between the first layer and the second layer, so that the organic EL display device is subjected to a bending durability test, for example, under high temperature and high humidity. At that time, it is considered that the invasion of water into the adhesive layer can be suppressed and the occurrence of problems such as peeling of the adhesive layer can be suppressed.

Further, in the present invention, the first layer can be a first layer having a desired barrier property by having a laminated structure of the first inorganic layer and the first organic layer. Specifically, for example, even if a defect such as a pinhole occurs in the first inorganic layer, the pinhole can be filled by the first organic layer, so that the barrier property due to the defect in the first inorganic layer is exhibited. The decrease can be suppressed and the desired barrier property can be achieved.
Further, in the first layer, the first organic layer is formed by using a layer that is a surface opposite to the first base material, that is, an outermost layer on the side opposite to the first base material of the first layer as the first organic layer. An effect of improving the adhesion to a member in contact with the surface of the layer opposite to the first base material, particularly to the organic layer containing an organic material can be obtained.
Further, since the first organic layer in the first layer has a cushioning property, it is possible to impart a predetermined flexibility to the first layer, and there is an effect that it can be satisfactorily used in an organic EL display device having flexibility. can get.

Hereinafter, the organic EL display device of the present invention will be described in detail.

The organic EL display device of the present invention is a device having flexibility. Here, "having flexibility" means having flexibility to the extent that it can follow the surface on which the organic EL display device is installed, and is appropriately changed according to the application of the organic EL display device. , Numerical value, etc. are not specified.

Hereinafter, each member constituting the organic EL display device of the present invention will be described in detail.

1. 1. First Laminated Body The first laminated body in the present invention is a member having a first base material and a first layer arranged on one surface of the first base material.

By having the first layer, the first laminated body in the present invention can suppress the invasion of moisture from the first laminated body side into the adhesive layer. That is, it is possible to impart a predetermined barrier property to the first laminated body, and as a result, there is a problem that the organic EL display device is peeled off from the adhesive layer when the bending durability test is performed under high temperature and high humidity. It is possible to suppress the generation and obtain a highly reliable organic EL display device. Therefore, the first layer in the present invention can function as a barrier layer.

Here, the "predetermined barrier property" imparted to the first laminated body means a highly reliable organic EL display device capable of suppressing the intrusion of moisture from the first laminated body side into the adhesive layer. It is preferable that the barrier property is such that Specifically, the water vapor permeability of the first laminated body ^{is preferably 9.0 × 10 -2} g / m ² days or less, particularly 3.0 × 10 ^-2 g / m ² days or less. It is preferably 1.0 × 10 ^-2 g / m ² days or less. When the water vapor transmittance of the first laminated body is within the above range, it is possible to effectively suppress the invasion of water from the first laminated body side into the adhesive layer. Further, the water vapor transmittance of the first laminated body can be appropriately adjusted mainly according to the configuration of the first layer constituting the first laminated body.
The water vapor transmittance is a value measured using a water vapor transmittance measuring device (DELTAPARM manufactured by Technolux) under the conditions of a constant temperature of 60 ° C. and a humidity of 90 Rh.

The thickness of the first laminated body in the present invention can be appropriately adjusted according to the thickness of each member constituting the first laminated body, and is not particularly limited. In the present invention, the thickness of the first laminated body is preferably such that it has the above-mentioned predetermined barrier property, for example, it is preferably 10 μm or more and 80 μm or less, and particularly preferably 20 μm or more and 50 μm or less. In particular, it is preferably 25 μm or more and 30 μm or less.
Hereinafter, the first layer and the first base material constituting the first laminated body in the present invention will be described in detail.

(1) First Layer The first layer in the present invention is a member having an inorganic layer and an organic layer arranged on one surface of the inorganic layer. Further, the thickness of the first layer can be 450 nm or more and 600 nm or less. Further, the thickness of the inorganic layer in the first layer can be 11 nm or more and less than 200 nm, and the thickness of the first layer can be 450 nm or more and 1000 nm or less.

The first layer in the present invention is a member having a first inorganic layer and a first organic layer, and usually, the first inorganic layer and the first organic layer are laminated in order from the first base material. The first layer in the present invention may have a two-layer structure in which the first inorganic layer 31a and the first organic layer 31b are laminated, as shown in FIG. 2, for example, as shown in FIG. 3 (a). As described above, a four-layer structure in which the first inorganic layer 31a, the first organic layer 31b, the second inorganic layer 32a, and the second organic layer 32b are laminated in this order may be used, and as shown in FIG. 3 (b). , A 6-layer structure in which the third inorganic layer 33a and the third organic layer 33b are laminated in this order may be used. Above all, as shown in FIG. 3A, it is preferable to have a four-layer structure in which the first inorganic layer 31a, the first organic layer 31b, the second inorganic layer 32a and the second organic layer 32b are laminated in this order. Reference numerals not described in FIGS. 3 (a) and 3 (b) can be the same as those in FIG. 1, and thus the description thereof will be omitted here.

In the present invention, the first layer can be a first layer having a desired barrier property by having a predetermined laminated structure. Further, since the first layer in the present invention has a laminated structure in which an inorganic layer and an organic layer are laminated, even if a defect such as a pinhole occurs in the inorganic layer, the pinhole is formed as an organic layer. It has the effect of being able to be filled with. Further, since the first layer has a structure in which the inorganic layer and the organic layer are laminated, the organic layer functions as a flattening layer, so that the inorganic layer can be satisfactorily formed. Therefore, in the process of forming the inorganic layer, defects such as pinholes are less likely to occur in the inorganic layer, and excellent barrier properties can be exhibited. Furthermore, in the first layer, when the layer to be the surface opposite to the first base material, that is, the outermost layer on the side opposite to the first base material of the first layer is an organic layer, the first layer is used. An effect of improving the adhesion to a member in contact with the surface of the layer opposite to the first base material, particularly to the organic layer containing an organic material can be obtained. Further, since the organic layer in the first layer has a cushioning property, it is possible to impart a predetermined flexibility to the first layer.

The first layer in the present invention preferably has a predetermined light transmittance that can be used in an organic EL display device. Here, the "predetermined light transmission" means transparency to the extent that the operator of the organic EL display device of the present invention does not interfere with the visual recognition from the operation surface, unless otherwise specified. Therefore, the "predetermined light transmission" includes colorless transparency and colored transparency to the extent that visibility is not hindered, and the degree of light transmission can be determined according to the application of the organic EL display device of the present invention. it can. The light transmittance of the first layer in the present invention is, for example, preferably 80.0% or more, particularly preferably 85.0% or more, particularly 87.0% or more in terms of visible light transmittance. Is preferable. The visible light transmittance can be measured by measuring with a spectrophotometer (UV-2450 manufactured by Shimadzu Corporation) in the measurement wavelength range of 380 nm to 780 nm.

The thickness of the first layer in the present invention can be appropriately adjusted according to the number of layers of the inorganic layer and the organic layer constituting the first layer, the thickness of each layer, and the like, and is not particularly limited. In the present invention, for example, the thickness of the first layer is preferably 450 nm or more and 1000 nm or less, particularly preferably 450 nm or more and 700 nm or less, and particularly preferably 450 nm or more and 600 nm or less. When the thickness of the first layer is within the above range, a predetermined barrier property can be imparted to the first layer, and the first layer can be a first layer having a predetermined flexibility.

Hereinafter, the first inorganic layer and the first organic layer constituting the first layer will be described.

(A) First Inorganic Layer The first inorganic layer in the present invention is a member constituting the first layer, and is usually a member arranged on the surface of the first layer on the first base material side.

The first inorganic layer in the present invention is preferably composed of an inorganic substance having a predetermined barrier property against water vapor. The inorganic material constituting the first inorganic layer, for example, include metal oxides, specifically, Si oxide represented by SiO _x or, B oxides represented by B _x O _y and the like. In the present invention as the inorganic substance constituting the first inorganic layer, among others, it is preferable to use a Si oxide, it is preferred to employ Si oxide nitrides denoted by SiO _x N _{y. When SiO x} N _y is used as the inorganic substance constituting the first inorganic layer, the first layer having excellent barrier property against water vapor, flexibility, and light transmission can be obtained. That is, the first laminated body has a barrier property to the extent that it has a predetermined water vapor permeability as described above, and the first laminated body is in an environment of a temperature of 60 ° C. and a humidity of 90%. When the bending durability test with a bending radius of 3 mm is carried out 200,000 times or more, the first layer has flexibility to the extent that problems such as peeling and cracking do not occur, and the first layer has the predetermined flexibility as described above. A first layer having light transmittance can be obtained.

_{When SiO x} N _y is used as the inorganic substance constituting the first inorganic layer, the ratio of the amount of oxygen x and the amount of nitrogen _{y in SiO x} N y is not particularly limited and can be appropriately adjusted. In the present invention, _{the ratio of the amount of oxygen x and the amount of nitrogen y in SiO x} N y is preferably, for example, x: y = 3: 7, 5: 5 or 7: 3, among which x: It is preferable that y = 5: 5. When _{the amount x of oxygen and the amount y of nitrogen in SiO x} N _y are in the above ratio, the first layer having particularly excellent barrier property, flexibility and light transmission can be obtained. _{The amount of oxygen x and the amount of nitrogen y} in SiO _x N y can be analyzed by measuring the film surface using an X-ray photoelectron spectroscopy analyzer (ESCA-3400 manufactured by Kratos). The measurement conditions are incident X-ray Mg Kα, X-ray output 200 W, and photoelectron capture angle 0 degrees (sample normal is 0 degrees).

_{As described above, the x of} SiO x N _y used as the inorganic substance constituting the first inorganic layer can be, for example, 3 or more and 7 or less, and more preferably 4 or more and 6 or less. Further, _{y of SiO x} N y can be, for example, 3 or more and 7 or less, and more preferably 4 or more and 6 or less.

The thickness of the first inorganic layer in the present invention can be appropriately adjusted according to the type of the inorganic substance constituting the first inorganic layer, the layer structure of the first layer, and the like, and is not particularly limited. In the present invention, for example, the thickness of the first inorganic layer is preferably, for example, 10 nm or more and 200 nm or less, particularly preferably 20 nm or more and 100 nm or less, and particularly preferably 20 nm or more and 40 nm or less. In the present invention, it is particularly preferable that the thickness of the first inorganic layer is 11 nm or more and less than 200 nm. When the thickness of the first inorganic layer is within the above range, a predetermined barrier property can be imparted to the first inorganic layer, and a first layer having a predetermined flexibility can be formed.

The method for forming the first inorganic layer in the present invention is not particularly limited as long as it can form a desired first inorganic layer. Examples of the method for forming the first inorganic layer include a thin-film deposition method, and among them, a physical vapor deposition method such as a sputtering method or a vacuum vapor deposition method is preferably used.

(B) First Organic Layer The first organic layer in the present invention is a member constituting the first layer, and is usually a member arranged on a surface opposite to the first base material of the first inorganic layer described above. Is.

The first organic layer in the present invention is preferably composed of an organic substance that can be formed by being laminated with the above-mentioned first inorganic layer and can exhibit a function as a flattening layer. Examples of the organic substance constituting the first organic layer include acrylic resin, epoxy resin, and polyimide resin.

The thickness of the first organic layer in the present invention can be appropriately adjusted according to the type of organic matter constituting the first organic layer, the layer structure of the first layer, and the like, and is not particularly limited. In the present invention, for example, the thickness of the first organic layer is preferably 50 nm or more and 500 nm or less, particularly preferably 100 nm or more and 400 nm or less, and particularly preferably 200 nm or more and 400 nm or less. When the thickness of the first organic layer is within the above range, the first organic layer can function as a flattening layer, and by exhibiting a predetermined cushioning property, the flexibility of the first layer can be exhibited. Can be improved.

The method for forming the first organic layer in the present invention is not particularly limited as long as it can form a desired first organic layer. Examples of the method for forming the first organic layer include coating methods such as roll coating, reverse coating, comma coating, knife coating, die coating, and gravure coating.

(C) Other Layers The first layer in the present invention may have a first inorganic layer and a first organic layer, and may have other layers if necessary. Examples of the other layers include a second inorganic layer 32a, a second organic layer 32b, a third inorganic layer 33a, a third organic layer 33b, and the like, as shown in FIGS. 3A and 3B described above. It can be appropriately selected according to the layer structure of the first layer 30a. In addition, in FIGS. 3A and 3B, the example which has the 2nd inorganic layer 32a, the 2nd organic layer 32b, the 3rd inorganic layer 33a, and the 3rd organic layer 33b was described, but in addition, 4th It may have an inorganic layer, a fourth organic layer, a fifth inorganic layer, a fifth organic layer and the like.

When the first layer in the present invention has a plurality of inorganic layers and organic layers, that is, in a four-layer structure in which the first layer has a first inorganic layer, a first organic layer, a second inorganic layer and a second organic layer. In some cases, or in the case of a six-layer structure having a third inorganic layer and a third organic layer, the materials of each inorganic layer and each organic layer may be the same, and each inorganic layer and each organic layer may have the same material. The material may be different for each layer, but from the viewpoint of productivity, it is preferable that the material of each inorganic layer and each organic layer is the same. Further, the materials of each inorganic layer and each organic layer may be the same, and the thickness of each inorganic layer and each organic layer may be different, but from the viewpoint of productivity, each inorganic layer and each organic layer may be different in thickness. It is preferable that the thickness of the organic layer is the same.

Each inorganic layer such as the second inorganic layer and the third inorganic layer in the present invention can be described here because the contents can be the same as those described in the above-mentioned section "(a) First inorganic layer". Is omitted. Further, each organic layer such as the second organic layer and the third organic layer in the present invention can be the same as the content described in the above-mentioned "(b) First organic layer" section. The description of is omitted.

(2) First Base Material The first base material in the present invention is a member that supports the above-mentioned first layer.

The first substrate in the present invention preferably has a predetermined light transmittance. Here, the "predetermined light transmission" means transparency to the extent that the operator of the organic EL display device of the present invention does not interfere with the visual recognition from the operation surface, unless otherwise specified. Therefore, the "predetermined light transmittance" includes colorless transparency and colored transparency to the extent that it does not interfere with visibility, and is not defined by a strict transmittance, depending on the application of the organic EL display device of the present invention and the like. The degree of light transmission can be determined.

The first substrate in the present invention preferably has a predetermined barrier property. Here, the "predetermined barrier property" means that the invasion of moisture from the first base material side of the first laminated body into the adhesive layer can be suppressed, and a highly reliable organic EL display device can be obtained. It is preferable that it has a degree of barrier property. Specifically, the water vapor permeability of the first base material ^{is preferably 9.1 × 10 -2} g / m ² day or less, and more preferably 5.0 × 10 ^-2 g / m ² day or less. It is preferable, and in particular, it is preferably 3.0 × 10 ^-2 g / m ² days or less. The water vapor transmittance of the first base material can be appropriately adjusted depending on the material and thickness of the first base material. Further, since the method for measuring the water vapor transmittance of the first base material can be the same as the method for measuring the water vapor transmittance of the first laminated body described above, the description here is omitted.

As the material of the first base material in the present invention, the same material as the base material used in a general organic EL display device having flexibility can be used, and among them, a material having a predetermined light transmittance can be used. preferable. Examples of the material of such a first base material include a resin material, and specifically, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), cycloolefin polymer (COP), polycarbonate (PC), and the like. Examples thereof include polyimide (PI) or triacetyl cellulose (TAC), polyacrylate, cycloolefin copolymer (COC) and the like.

The thickness of the first base material in the present invention is not particularly limited as long as it can support at least the above-mentioned first layer, and can be appropriately designed according to the application of the organic EL display device of the present invention. is there. Above all, it is preferable to appropriately adjust according to the flexibility to be imparted to the organic EL display device of the present invention, the barrier property, and the like. Since the specific thickness of the first base material can be the same as the thickness of the base material used in a general organic EL display device having flexibility, the description here is omitted.

(3) First Functional Layer In the present invention, the first laminated body may have the first functional layer. Specifically, as shown in FIG. 4A, the first functional layer 71a may be provided between the first base material 10a and the first layer 30a, or as shown in FIG. 4B. As shown, the first functional layer 71a may be provided on the surface of the first layer 30a opposite to the first base material 10a, and further, as shown in FIG. 4C, any of them may be provided. May also have first functional layers 71a, 72a.

An example in which the first laminated body in the present invention has the first functional layer will be described with reference to the drawings. 5 (a) to 5 (d) are schematic cross-sectional views showing an example in which the first laminated body in the present invention has a first functional layer. As shown in FIG. 5A, the first laminated body in the present invention has a decorative portion 81 and a flattening layer 82 as a first functional layer 71a between the first base material 10a and the first layer 30a. The decorative member 80 may be provided. Further, as shown in FIG. 5B, the first laminated body in the present invention has a decorative portion 81 and a flattening portion 81 as a first functional layer 71a between the first base material 10a and the first layer 30a. The decorative member 80 having the layer 82 and the optical functional member 90 may be provided. Further, in the first laminated body in the present invention, as shown in FIG. 5C, the optical functional member 90 is provided as the first functional layer 71a on the surface of the first layer 30a opposite to the first base material 10a. You may have it. Furthermore, as shown in FIG. 5D, the first laminated body in the present invention has a decorative portion 81 and a flat surface as a first functional layer 71a between the first base material 10a and the first layer 30a. A decorative member 80 having a chemical layer 82 may be provided, and an optical functional member 90 may be provided as the first functional layer 72a on the surface of the first layer 30a opposite to the first base material 10a.
In addition, in FIGS. 5A to 5D, an example in which a decorative member and an optical functional member are provided as the first functional layer has been described, but other first functional layers are provided as needed. Is also good.

Hereinafter, the decorative member and the optical functional member will be described as an example of the first functional layer in the present invention.

(A) Decorative member The decorative member in the present invention is, for example, a member having a decorative portion in a region corresponding to a frame portion of an organic EL display device.

The thickness of the decorative portion in the present invention can be appropriately adjusted according to the application of the organic EL display device of the present invention, and can be the same as that of a general decorative portion. Omit.

The color exhibited by the decorative portion in the present invention can be appropriately selected according to the design of the organic EL display device and the like. When the decorative portion is a black decorative portion exhibiting black, the constituent material of the black decorative portion can be the same as the constituent material of the light-shielding portion described later, and thus the description thereof is omitted here. When the decorative portion is a white decorative portion that exhibits white color, examples of the constituent material of the white decorative portion include titanium oxide, silica, talc, kaolin, clay, barium sulfate, calcium hydroxide, and the like. ..

In addition to the above-mentioned decorative portion, the decorative member in the present invention includes a flattening layer for flattening a step between a region where the decorative portion is formed and a region where the decorative portion is not formed. You may have.

As the material constituting the flattening layer in the present invention, it is preferable to use a material having a predetermined light transmittance and a predetermined flexibility that can be used as an organic EL display device having flexibility. .. Specifically, a resin material can be used. The resin material used for the flattening layer can be the same as the resin material used for the first base material described above, and thus the description thereof is omitted here.

The thickness of the flattening layer should be such that by providing the flattening layer, the step between the region where the decorative portion is formed and the region where the decorative portion is not formed can be flattened. Is preferable. Specifically, it is preferable that the thickness is equal to or thinner than the thickness of the decorative portion described above.

Since the method for forming the decorative member in the present invention can be the same as the method for forming the general decorative member, the description here is omitted.

(B) Optical functional member The optical functional member in the present invention may have an orientation layer in addition to the optical functional layer.

The optical functional member in the present invention may have at least one retardation layer, and may have a configuration in which a plurality of retardation layers and an orientation layer described later are laminated. When the optical functional member has a configuration in which a plurality of retardation layers and alignment layers are laminated, each layer can be laminated via an adhesive layer.
Hereinafter, the retardation layer and the alignment layer constituting the optical functional member will be described.

(I) Phase difference layer The retardation layer in the present invention is a member constituting an optical functional member and is a member to which a liquid crystal material is fixed.

The retardation layer in the present invention is a member containing a liquid crystal material, and the liquid crystal material is preferably in an array state capable of imparting desired optical characteristics to the optical functional member. Specific examples of the arrangement state of the liquid crystal material include a state in which the liquid crystal material is oriented in the length direction of the retardation layer and a state in which the liquid crystal material is oriented in the thickness direction of the retardation layer. The former liquid crystal structure is called a homogeneous structure (parallel orientation structure), and by having such a structure, it is possible to optically impart the property of an A plate to the optical functional member. Further, the latter liquid crystal structure is called a homeotropic structure (vertical orientation structure), and by having such a structure, it is possible to impart the property of an optically positive C plate to the optical functional member. Further, the liquid crystal material may be arranged in a cholesteric arrangement state in which the liquid crystal material exhibits a regular spiral structure. By having such an arrangement state, it is possible to impart the property of an optically negative C plate to the optical functional member.

The thickness of the retardation layer constituting the optical functional member can be appropriately adjusted according to the type of the liquid crystal material and the optical characteristics to be imparted to the optical functional member, and is not particularly limited. For example, it is preferable that the in-plane retardation of the retardation layer is formed within a range corresponding to λ / 4. The in-plane retardation value of the retardation layer is, for example, preferably 100 nm or more and 160 nm or less, more preferably 110 nm or more and 150 nm or less, and further preferably 120 nm or more and 140 nm or less. When the thickness of the retardation layer is set to a distance within a range in which the in-plane retardation of the retardation layer corresponds to λ / 4 minutes, the specific distance should be determined by the retardation layer described later. It can be appropriately determined according to the type of liquid crystal material contained. For example, when a general liquid crystal material is used, the thickness of the retardation layer can be 0.5 μm or more and 2 μm or less.

The retardation layer constituting the optical functional member is, for example, a member that transmits light emitted from a light source in an organic EL display device. Therefore, the retardation layer in the present invention preferably has a predetermined light transmittance. Here, "predetermined light transmission" means that the light is transparent enough to transmit the light emitted from the light source unless otherwise specified. Since the specific transmittance of the retardation layer can be the same as that of the retardation layer used for a general optical functional member, the description thereof is omitted here.

The liquid crystal material contained in the retardation layer is not particularly limited as long as it can impart desired optical functionality to the retardation layer. Of these, a liquid crystal material exhibiting photosensitivity is preferable, and a liquid crystal material exhibiting a nematic phase is particularly preferably used. This is because nematic liquid crystals are easier to arrange regularly than liquid crystal materials exhibiting other liquid crystal phases. The specific material used for the retardation layer can be the same as the material used for the general retardation layer, and thus the description thereof is omitted here.

Since the method for forming the retardation layer in the present invention can be the same as the general method for forming the retardation layer, the description here is omitted.

(Ii) Alignment layer The optical functional member in the present invention may have an alignment layer or may not have an alignment layer. In the present invention, it is preferable not to have an orientation layer from the viewpoint of light transmission. The alignment layer is a member having an alignment function. The alignment function is, for example, a function imparted by a photo-alignment method or a rubbing method, and when the photo-alignment method is used, the alignment layer preferably contains a photo-alignment material.
Hereinafter, as an example of the alignment layer, an alignment layer to which the alignment function is imparted by the photoalignment method will be described. The alignment layer to which the alignment function is imparted by the rubbing method can be the same as a general one, and thus the description thereof is omitted here.

Here, the "photo-alignment material" contained in the alignment layer refers to a material capable of exhibiting an orientation-regulating force by the photo-alignment method. Further, the "photo-alignment method" is a method of expressing the orientation-regulating force (anisotropic) of the alignment layer by irradiating the alignment layer with light (polarized light) having an arbitrary polarization state. Therefore, the photo-alignment material in the present invention can be said to be a material capable of exhibiting an orientation-regulating force by irradiating with polarized light. Further, the "orientation regulating force" means an interaction in which the liquid crystal compounds contained in the above-mentioned optical functional member are arranged.

The thickness of the alignment layer in the present invention can be adjusted according to the constituent materials. The thickness of the alignment layer in the present invention is, for example, preferably 0.01 μm or more and 0.5 μm or less, particularly preferably 0.02 μm or more and 0.1 μm or less, and particularly 0.03 μm or more and 0.05 μm or less. It is preferable to have. When the thickness of the alignment layer in the present invention is within the above range, a desired orientation regulating force can be exhibited with respect to the liquid crystal compound contained in the above-mentioned optical functional member.
The thickness of the alignment layer in the present invention can be measured, for example, by observing the cross section using a scanning electron microscope (SEM).

The alignment layer in the present invention is a member that transmits light emitted from a light source in the organic EL display device of the present invention. Therefore, the oriented layer in the present invention preferably has a predetermined light transmittance. Here, "predetermined light transmission" means that the light is transparent enough to transmit the light emitted from the light source unless otherwise specified. Since the specific transmittance of the oriented layer can be the same as that of a general oriented layer, the description thereof is omitted here.

The alignment material contained in the alignment layer is not particularly limited as long as it is a material capable of exhibiting an orientation regulating force by irradiating with polarized light. Such photo-alignment materials include a photoisomerization material that changes only the molecular shape by changing the cis-trans to reversibly change the orientation control force, and a photoreactive material that changes the molecule itself by irradiating polarized light. It can be roughly divided into. In the present invention, either a photoisomerizing material or a photoreactive material can be preferably used, but it is more preferable to use a photoreactive material.
In the photoreactive material, the molecules react with each other when irradiated with polarized light to exert the orientation-regulating force, so that the orientation-regulating force can be irreversibly expressed. Therefore, the photoreactive material is superior in orientation regulating force and stability over time.

The photoreactive material can be further sorted according to the type of reaction produced by the irradiation of polarized light. Specifically, a photodimerization type material that expresses an orientation regulating force by causing a photodimerization reaction, a photobonding type material that expresses an orientation regulating force by causing a photodecomposition reaction, and a photodecomposition reaction and a photobonding reaction. It can be divided into photodegradable-bonded materials and the like that exhibit orientation-regulating force by generating. In the present invention, any of the above-mentioned photoreactive materials can be preferably used, but from the viewpoint of stability, reactivity (sensitivity) and the like, it is preferable to use an optical dimerization type material.

The photoalignment material used in the present invention may be only one type or two or more types.

Since the method for forming the alignment layer in the present invention can be the same as the general method for forming the alignment layer, the description here is omitted.

(C) Other Members The first functional layer in the present invention may have other members, if necessary, in addition to the above-mentioned decorative members and optical functional members. Other members include, for example, an antireflection layer and a protective layer arranged on the surface of the decorative member on the first base material side, and an adhesive layer used when laminating the decorative member and the optical functional member. Can be mentioned.
Hereinafter, the antireflection layer, the protective layer, and the adhesive layer will be described.

(I) Antireflection layer The antireflection layer in the present invention can be arranged, for example, on the surface of the decorative member used as the first functional layer on the side of the first base material. By arranging the antireflection layer, it is possible to suppress the reflection of external light on the surface of the organic EL display device of the present invention, and it is possible to improve the visibility.

As the material constituting the antireflection layer in the present invention, it is preferable to use a material having a predetermined light transmittance and a predetermined flexibility. Specifically, since a material that can be used for a general antireflection layer can be mentioned, the description here is omitted.

The thickness of the antireflection layer is preferably such that it can exhibit an antireflection function as an antireflection layer and can be used in the organic EL display device of the present invention. The specific thickness of the antireflection layer can be appropriately adjusted according to the material and the like constituting the antireflection layer, and thus the description thereof is omitted here.

Since the method for forming the antireflection layer in the present invention can be the same as the general method for forming the antireflection layer, the description here is omitted.

(Ii) Protective layer The protective layer in the present invention can be arranged so as to cover the surface opposite to the first base material of the decorative member used as the first functional layer, for example. By arranging the protective layer, it is possible to enhance the protective function of the first functional layer in the present invention.

As the material constituting the protective layer in the present invention, it is preferable to use a material having a predetermined light transmittance and a predetermined flexibility. For example, a resin material that can be used for a general protective layer can be mentioned, and among them, a resin material having heat resistance and scratch resistance is preferable. Specific examples thereof include epoxy resin, acrylic resin, and polyimide resin.

The thickness of the protective layer is preferably such that it can exert a protective function as a protective layer, for example. Specifically, for example, it is preferably 1 μm or more and 5 μm or less.

Since the method for forming the protective layer in the present invention can be the same as the method for forming the general protective layer, the description here is omitted.

(Iii) Adhesive layer The adhesive layer in the present invention can be used as a member for attaching the decorative member when the decorative member is laminated as the first functional layer. Further, when the optical functional members are laminated as the first functional layer, it is used as a member for attaching the optical functional member, or as a member for attaching the retardation layer, the alignment layer, etc. constituting the optical functional member. Can be done.

The adhesive layer in the present invention will be described in the section “3. Adhesive layer” described later, and thus the description thereof will be omitted here.

2. Second Laminated Body The second laminated body in the present invention includes a second base material, an organic EL element base material provided with an organic EL layer arranged on one surface of the second base material, and the organic EL element layer. It is a member having a second layer arranged on the surface opposite to the second base material.

In the second laminated body of the present invention, since the second layer is arranged on the surface of the organic EL element layer opposite to the second base material, it is possible to suppress the invasion of moisture into the adhesive layer. That is, it is possible to impart a predetermined barrier property to the second laminated body, and as a result, there is a problem that the organic EL display device is peeled off from the adhesive layer when the bending durability test is performed under high temperature and high humidity. It is possible to suppress the generation and obtain a highly reliable organic EL display device. Here, the "predetermined barrier property" of the second laminated body is preferably a barrier property that can suppress the invasion of moisture from the surface on the second layer side into the organic EL element base material. .. Specifically, the water vapor permeability of the second laminate ^{is preferably 9.1 × 10 -2} g / m ² day or less, and more preferably 5.9 × 10 ^-2 g / m ² day or less. It is preferably 3.0 × 10 ^-2 g / m ² days or less. When the water vapor transmittance of the second laminated body is within the above range, the invasion of water from the second laminated body side into the adhesive layer can be effectively suppressed. Further, the water vapor transmittance of the second laminated body can be appropriately adjusted according to the configurations of the second laminated body and the second base material.
Since the method for measuring the water vapor transmittance can be the same as the method for measuring the water vapor transmittance of the first laminated body described above, the description here is omitted.

The thickness of the second laminated body in the present invention can be appropriately adjusted according to the thickness of each member constituting the second laminated body, and is not particularly limited.
Hereinafter, the second layer and the organic EL element base material constituting the second laminated body in the present invention will be described in detail.

(1) Second Layer The second layer in the present invention is a member arranged on the surface of the organic EL layer described later on the side opposite to the second base material.

The second layer in the present invention preferably has a predetermined barrier property capable of suppressing the invasion of moisture from the second laminated body side into the adhesive layer. Further, it is preferable that the organic EL element has a predetermined barrier property to the extent that it suppresses the intrusion of water and oxygen into the base material of the organic EL device. The second layer may be a single layer or may be a multi-layer. When the second layer is a single layer, it is preferable to use an inorganic layer composed of an inorganic substance having a predetermined barrier property. When the second layer is multi-layered, it is preferable to use an organic layer laminated on the inorganic layer. The second layer may be the same as the general first layer, or may be the same as the first layer described in the above-mentioned "1. 1st laminated body (1) 1st layer". For the sake of goodness, the description here is omitted.

The second layer in the present invention preferably has a predetermined light transmittance that can be used in an organic EL display device. Here, the "predetermined light transmission" means transparency to the extent that the operator of the organic EL display device of the present invention does not interfere with the visual recognition from the operation surface, unless otherwise specified. Therefore, the "predetermined light transmission" includes colorless transparency and colored transparency to the extent that visibility is not hindered, and the degree of light transmission can be determined according to the application of the organic EL display device of the present invention. it can. The specific light transmission of the second layer can be the same as the light transmission of the first layer described in the above-mentioned "1. 1st laminated body (1) 1st layer". Therefore, the description here is omitted.

The thickness of the second layer in the present invention can be appropriately adjusted depending on whether the second layer is a single layer or a multi-layer, and is not particularly limited. In the present invention, for example, the thickness of the second layer is preferably 450 nm or more and 1000 nm or less, particularly preferably 450 nm or more and 700 nm or less, and particularly preferably 450 nm or more and 600 nm or less. When the thickness of the second layer is within the above range, a predetermined barrier property can be imparted to the second layer, and the second layer can be a second layer having a predetermined flexibility.

(2) Organic EL Element Base Material The organic EL element base material in the present invention is a member provided with an organic EL layer arranged on one surface of a second base material and the second base material, and is an organic member of the present invention. It is a member for displaying an image in an EL display device.

The organic EL element base material in the present invention can have the same structure as a general organic EL element base material, but has, for example, a structure in which an organic EL layer is arranged on a second base material. The second base material included in the organic EL element base material can be the same as that described in the above-mentioned "1. First laminated body (2) First base material". The description of is omitted. The organic EL layer and other members included in the organic EL element base material are the same as those used for a general organic EL element base material as described in, for example, Japanese Patent Application Laid-Open No. 2016-021039. Therefore, the description here is omitted.

(3) Second Functional Layer In the present invention, the second laminated body may have a second functional layer. Specifically, as shown in FIG. 6, the second functional layer 71b may be provided on the surface of the second layer 30b opposite to the second base material 10b.

An example in which the second laminated body in the present invention has a second functional layer will be described with reference to the drawings. FIG. 7 is a schematic cross-sectional view showing an example in which the second laminated body in the present invention has a second functional layer. As shown in FIG. 7, the second laminated body in the present invention may have the second functional layer 71b on the surface of the second layer 30b opposite to the second base material 10b. In FIG. 7, the second laminated body 20b has a light-shielding portion 112 having an opening and a colored layer 111 of each color arranged in the opening (here, a red colored layer 111R, a green colored layer 111G, and a blue colored layer). The color filter 110 having the 111B), the protective layer 113 arranged so as to cover the colored layer 111, and the second functional layer 71b on which the touch panel 120 is laminated are bonded to the second layer 30b by the adhesive layer 130. This is an example.
The reference numerals not described in FIG. 7 can be the same as those in FIG. 1, and thus the description thereof will be omitted here. Further, in FIG. 7, an example in which a color filter and a touch panel are provided as the second functional layer has been described, but other second functional layers may be provided if necessary.

Hereinafter, a color filter and a touch panel will be described as an example of the second functional layer in the present invention.

(A) Color filter The color filter in the present invention has a light-shielding portion having a plurality of openings and a colored layer arranged in the openings.
Hereinafter, each member constituting the color filter will be described.

(I) Light-shielding part The light-shielding part in the present invention is a member arranged on a base material and having a plurality of openings.

The light-shielding portion in the present invention is a member that is arranged in parallel so as to extend in a first direction and a second direction that intersects the first direction, and defines an opening. Examples of the plan view shape of the opening include a rectangular shape. Further, since the width of the opening in the light-shielding portion can be the same as the width of the opening in the light-shielding portion in a general color filter, the description here is omitted.

The line width of the light-shielding portion in the present invention can be appropriately selected depending on the use of the color filter base material of the present invention and is not particularly limited, but is preferably 1 μm or more and 30 μm or less, and among them, 1 It is preferably 5.5 μm or more and 28 μm or less, and particularly preferably 2 μm or more and 25 μm or less. When the line width of the light-shielding portion is within the above range, the opening can be sufficiently defined and a high-definition color filter base material can be obtained. When the line width of the light-shielding portion is not constant, it is preferable that the line width of the light-shielding portion is all within the above range.

The thickness of the light-shielding portion in the present invention is not particularly limited as long as it can exhibit a desired light-shielding property, and is appropriately adjusted according to the material used for the light-shielding portion. The specific thickness of the light-shielding portion in the present invention can be, for example, 0.5 μm or more and 3.0 μm or less.

The constituent material of the light-shielding portion in the present invention is not particularly limited as long as it is a material capable of exhibiting a desired light-shielding property. Specifically, the light-shielding portion is usually a cured product containing a black coloring material in a binder resin, but may contain a colored material in addition to the black coloring material, if necessary. The specific constituent material of the light-shielding portion can be the same as that of the light-shielding portion used for a general color filter, and thus the description thereof is omitted here.

The light-shielding portion in the present invention may contain other materials, if necessary, in addition to the above-mentioned constituent materials. Examples of other materials include a photopolymerization initiator, a sensitizer, a coatability improver, a cross-linking agent, a polymerization inhibitor, a plasticizer, a flame retardant and the like.

Since the method of forming the light-shielding portion in the present invention can be the same as the method of forming the light-shielding portion used in a general color filter, the description here is omitted.

(Ii) Colored layer The colored layer in the present invention is a member arranged in an opening formed by a light-shielding portion.

In the present invention, for example, it has three colored layers of red, green, and blue. The color of the coloring layer may include at least three colors of red, green, and blue. For example, three colors of red, green, and blue, four colors of red, green, blue, and yellow, or red, It can also be five colors such as green, blue, yellow, and cyan.

The thickness of the colored layer in the present invention can be the same as the thickness of the colored layer used in a general color filter, and can be set to, for example, 1 μm or more and 5 μm or less.

As the coloring layer, for example, a color material dispersed in a binder resin can be used. Examples of the coloring material used for the coloring layer include pigments and dyes of each color. For example, examples of the coloring material used for the red coloring layer include perylene pigments, lake pigments, azo pigments, quinacridone pigments, anthracene pigments, anthracene pigments, isoindoline pigments and the like. Examples of the coloring material used for the green coloring layer include phthalocyanine pigments such as halogen polysubstituted phthalocyanine pigments or halogen polysubstituted copper phthalocyanine pigments, triphenylmethane basic dyes, isoindolin pigments, and isoind. Examples include linone pigments. Further, examples of the coloring material used for the blue coloring layer include copper phthalocyanine pigments, anthraquinone pigments, indanthrone pigments, indanthrone pigments, cyanine pigments, dioxazine pigments and the like. These pigments and dyes may be used alone or in combination of two or more. Examples of the binder resin used for the colored layer include photosensitive resins having a reactive vinyl group such as acrylate-based, methacrylate-based, polyvinyl chloride-based, and cyclized rubber-based.

In addition to the above-mentioned materials, a photopolymerization initiator, a sensitizer, a coatability improver, a development improver, a cross-linking agent, a polymerization inhibitor, a plasticizer, a flame retardant, etc. are added to the colored layer, if necessary. Can be included.

Further, a white layer containing a binder resin may be formed on the same plane on which the colored layer is formed, without containing the above-mentioned coloring material.

Since the method for forming the colored layer in the present invention can be the same as the method for forming the colored layer in a general color filter, the description here is omitted.

(B) Touch panel The touch panel in the present invention has at least a sensor electrode. In addition, the touch panel usually has an insulating layer arranged so as to cover the sensor electrodes.

As the touch panel in the present invention, for example, a resistive film method, a capacitance method, an optical method, an electromagnetic induction method, an ultrasonic method, or the like can be used.

(I) Sensor electrode The sensor electrode in the present invention is a member used for detecting the position of the touch panel.

The sensor electrode in the present invention may be a transparent conductive layer having transparency, or may be a mesh electrode having a mesh shape with fine wires. In the present invention, when the sensor electrode is a mesh-shaped mesh electrode made of fine wires, even if the material used for the sensor electrode is an opaque metal material, it is possible to make the sensor electrode seemingly transparent.

When the sensor electrode in the present invention is a transparent conductive layer, the thickness of the sensor electrode and the like can be appropriately adjusted according to the application of the organic EL display device of the present invention, and is the same as that of a general sensor electrode. Therefore, the description here is omitted.
When the sensor electrode in the present invention is a mesh electrode, the thickness, line width, pitch, aperture ratio, etc. of the sensor electrode can be appropriately adjusted according to the application of the organic EL display device of the present invention, and is generally used. Since it can be the same as a typical sensor electrode, the description here is omitted.

When the sensor electrode is a transparent electrode layer, as the constituent material of the sensor electrode in the present invention, for example, a transparent conductive material such as tin oxide, indium tin oxide called ITO, and indium zinc oxide called IZO is used. be able to.
When the sensor electrode in the present invention is a mesh electrode made of an opaque metal material, the metal material is mainly composed of, for example, silver, gold, copper, chromium, platinum, aluminum alone, or any of these. Examples thereof include alloys. As the metal alloy, an alloy of silver, palladium, copper or the like called APC can be used. Further, as the metal complex, a three-layer structure of molybdenum, aluminum, and molybdenum called MAM can also be applied. Further, for example, a conductive polymer obtained by adding the above metal to a composition for forming a resin layer such as PEDOT can also be used.

Since the method for forming the sensor electrode in the present invention can be the same as the method for forming the sensor electrode used for a general touch panel, the description here is omitted.

(Ii) Insulation layer The insulation layer in the present invention is a member that can be used to insulate the sensor electrode described above.

The insulating layer in the present invention is usually arranged so as to cover the sensor electrode. The thickness of the insulating layer is preferably such that it can insulate the sensor electrode and prevent a short circuit, and can be appropriately adjusted according to the design of the sensor electrode. For example, the thickness of the insulating layer can be 0.5 μm or more and 3 μm or less.

The constituent material of the insulating layer in the present invention is preferably a material having a desired insulating property, and a material generally used for a touch panel can be used. Specific examples thereof include insulating resin materials such as polyimide resin, acrylic resin, cardo resin, epoxy resin and melamine resin, and inorganic materials such as glass. As the constituent material used for the insulating layer, one type may be used alone, or two or more types may be used in combination. Further, the layer structure of the insulating layer may be one layer or may be a multilayer structure including two or more layers.

Since the method for forming the insulating layer in the present invention can be the same as the method for forming the insulating layer used for a general touch panel, the description here is omitted.

(Iii) Transparent base material The touch panel in the present invention may have a transparent base material as long as it supports the sensor electrodes, if necessary. Since the transparent base material in the present invention can be the same as the content described in the above-mentioned "(3) Second base material", the description thereof is omitted here.

(C) Other Members The second functional layer in the present invention may have other members, if necessary, in addition to the color filter and the touch panel described above. Other members include, for example, an antireflection layer and a protective layer arranged on the surface opposite to the second base material of the color filter, and an adhesive layer used when laminating the color filter and the touch panel. Can be mentioned. The other members can be described here because they can be the same as those described in the above-mentioned "1. 1st laminated body (3) 1st functional layer (c) other members". Is omitted.

3. 3. Adhesive layer The adhesive layer in the present invention is a member sandwiched between the first laminated body and the second laminated body.

The adhesive layer in the present invention preferably has a predetermined light transmittance that can be used in an organic EL display device. Here, the "predetermined light transmission" means transparency to the extent that the operator of the organic EL display device of the present invention does not interfere with the visual recognition from the operation surface, unless otherwise specified. Therefore, the "predetermined light transmittance" includes colorless transparency and colored transparency to the extent that visibility is not hindered, and is not defined by a specific transmittance, depending on the application of the organic EL display device of the present invention and the like. The degree of light transmission can be determined.

The material of the adhesive layer in the present invention need only have adhesiveness to the extent that the first laminated body and the second laminated body can be bonded to each other, and is an adhesive layer used in a general organic EL display device. It can be similar to the material. Specific examples of the adhesive layer material include a thermosetting resin material and an ultraviolet curable resin material. In the present invention, by using a thermosetting resin material for the adhesive layer, a problem such as peeling from the adhesive layer occurs when the bending durability test is performed on the organic EL display device under high temperature and high humidity. The effect of being able to suppress is remarkable.

The ultraviolet curable resin material used for the adhesive layer is preferably a material that can be cured by irradiating, for example, ultraviolet rays having a wavelength in the range of 100 nm or more and 450 nm or less. Examples of the ultraviolet curable resin material include monofunctional monomers such as reactive ethyl (meth) acrylate, ethylhexyl (meth) acrylate, styrene, methylstyrene, and N-vinylpyrrolidone, polyfunctional monomers, and polymethylol propantri (meth). Acrylate, hexanediol (meth) acrylate, triethylene (polypropylene) glycol (meth) diacrylate, tripropylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, neo Pentyl glycol di (meth) acrylate, isocyanuric acid EO modified diacrylate, pentaerythritol tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, bisphenol fluorene derivative, bisphenoxyethanol full orange (meth) acrylate, bisphenol full orange epokiki Examples include (meth) acrylate. Here, (meth) acrylate is a notation meaning acrylate or methacrylate.
In the present invention, only one kind of these ultraviolet curable resin materials may be used, or two or more kinds may be mixed and used.

Examples of the thermosetting resin material used for the adhesive layer include epoxy resin, phenol resin, melamine resin, unsaturated polyester resin, and urea resin.
In the present invention, only one type of these thermosetting resin materials may be used, or two or more types may be mixed and used.

The thickness of the adhesive layer in the present invention is such that the first laminated body and the second laminated body can be bonded together, and further, a predetermined flexibility can be imparted to the organic EL display device of the present invention. It is preferable to have. Since the specific thickness of the adhesive layer can be the same as the thickness of the adhesive layer used in a general organic EL display device, the description here is omitted.

The method for forming the adhesive layer in the present invention can be the same as the general method for forming the adhesive layer. Specific examples of the method for forming the adhesive layer include coating methods such as roll coating, reverse coating, comma coating, knife coating, die coating, and gravure coating.

4. Other Members The organic EL display device of the present invention may have the above-mentioned first laminated body, second laminated body, and adhesive layer, and may have other members as necessary. Examples of other members include a third layer, various functional layers, and the like. When the organic EL display device of the present invention has a third layer, a problem such as peeling from the adhesive layer may occur when the organic EL display device is subjected to a bending durability test under high temperature and high humidity. It can be suppressed more effectively.

Regarding the third layer, the first layer and the second layer described in the above-mentioned "1. 1st laminated body (1) 1st layer" and "2. 2nd laminated body (1) 2nd layer". Since it can be the same as the layer, the description here is omitted. Further, regarding various functional layers, the first functional layer described in the above-mentioned "1. 1st laminated body (3) 1st functional layer" and "2. 2nd laminated body (3) 2nd functional layer". And since it can be the same as the second functional layer, the description here is omitted.

B. Laminate for Organic EL Display Device The laminate for organic EL display device of the present invention has a base material and a first layer arranged on one surface of the base material, and the first layer is an inorganic layer. The member has an organic layer arranged on one surface of the inorganic layer, and the thickness of the first layer is 450 nm or more and 600 nm or less, and is used in an organic EL display device.

According to the present invention, when the laminate for an organic EL display device of the present invention and another laminate having an organic EL element base material are laminated via an adhesive layer to form an organic EL display device, the laminate is formed. Since the body has a first layer having a predetermined thickness, even when a bending durability test is performed on an organic EL display device under high temperature and high humidity, peeling due to invasion of moisture into the adhesive layer is prevented. It is possible to obtain a laminated body for an organic EL display device which can be suppressed and an organic EL display device having excellent bending durability can be obtained.

Since the laminated body for the organic EL display device of the present invention can be the same as the content described in the above-mentioned "A. Organic EL display device 1. First laminated body", the description here is omitted. To do.

C. Method for Manufacturing Organic EL Display Device In the method for manufacturing an organic EL display device of the present invention, a first base material and a first laminate having a first layer arranged on one surface of the first base material are prepared. An organic EL element base material provided with a first laminate preparation step, a second base material, and an organic EL layer arranged on one surface of the second base material, and the second base material of the organic EL layer. A second laminate preparation step of preparing a second laminate having a second layer arranged on a surface opposite to the above, a surface of the first laminate on the first layer side, and the second laminate. The first layer has a bonding step of bonding via an adhesive layer so that the surfaces on the second layer side face each other, and the first layer is one of the first inorganic layer and the first inorganic layer. It is a manufacturing method characterized by having a first organic layer arranged on a surface.

The method for manufacturing the organic EL display device of the present invention will be described with reference to the drawings. 8 (a) to 8 (c) are schematic process diagrams showing an example of a method for manufacturing the organic EL display device of the present invention. As shown in FIG. 8A, the method for manufacturing an organic EL display device of the present invention is a first having a first base material 10a and a first layer 30a arranged on one surface of the first base material 10a. The first laminate preparation step for preparing the laminate 20a, the organic EL layer 50 provided with the second substrate 10b, and the second substrate 10b of the organic EL layer 50, as shown in FIG. 8B, A second laminate preparation step of preparing a second laminate 20b having a second layer 30b arranged on the opposite surface, and as shown in FIG. 8C, a first layer 30a of the first laminate 20a. It has a bonding step of bonding via an adhesive layer 60 so that the side surface and the surface of the second laminated body 20b on the second layer 30b side face each other. As shown in FIG. 2, the first layer 30a in the present invention has a first inorganic layer 31a and a first organic layer 31b.

According to the present invention, in an organic EL display device having a structure in which a first laminated body and a second laminated body are bonded via an adhesive layer, the first laminated body on the side opposite to the organic EL element base material is the first. By having one layer, the adhesive layer can be sandwiched by the second layer in the first layer and the second laminated body. Therefore, when a bending durability test is performed on an organic EL display device under high temperature and high humidity, peeling due to the intrusion of moisture into the adhesive layer can be suppressed, and the organic EL having excellent bending durability. A display device can be obtained.

Hereinafter, each step of the method for manufacturing the organic EL display device of the present invention will be described.

1. 1. First Laminated Body Preparation Step The first laminated body preparation step in the present invention is a step of preparing a first laminated body having a first base material and a first layer arranged on one surface of the first base material. ..

The first laminated body preparation step in the present invention is not particularly limited as long as it is a step capable of obtaining the first laminated body having the above-mentioned predetermined configuration. The members constituting the first laminated body and the method of forming the same members can be the same as those described in the above-mentioned "A. Organic EL display device 1. First laminated body". The description in is omitted.

The first laminated body preparation step in the present invention may include, for example, a first functional layer in addition to the above-mentioned first base material and the first layer. The first functional layer and the method for forming the first functional layer can be the same as those described in the above-mentioned "A. Organic EL display device 1. First laminated body (3) First functional layer". , The description here is omitted.

2. Second Laminated Body Preparation Step The second laminated body preparation step in the present invention includes a second base material, an organic EL element base material having an organic EL layer arranged on one surface of the second base material, and an organic material. This is a step of preparing a second laminated body having a second layer arranged on a surface opposite to the second base material of the EL layer.

The second laminated body preparation step in the present invention is not particularly limited as long as it is a step capable of obtaining the second laminated body having the above-mentioned predetermined configuration. The members constituting the second laminated body and the method for forming the same can be the same as those described in the above-mentioned "A. Organic EL display device 2. Second laminated body". The description in is omitted.

The second laminate preparation step in the present invention may include, for example, a second functional layer in addition to the organic EL element base material having the second base material and the second layer described above. The second functional layer and the method for forming the second functional layer can be the same as those described in the above-mentioned "A. Organic EL display device 2. Second laminated body (3) Second functional layer". , The description here is omitted.

3. 3. Laminating step The laminating step in the present invention is a step of laminating via an adhesive layer so that the surface of the first laminated body on the first layer side and the surface of the second laminated body on the second layer side face each other. Is.

Here, as a method of laminating the first laminated body and the second laminated body via the adhesive layer, for example, each member is laminated in the order of the first laminated body, the adhesive layer, and the second laminated body, and the first laminated body is laminated. Examples thereof include a method in which the body and the second laminated body are pressed with a predetermined force so as to be adhered to each other through the adhesive layer, and the first laminated body and the second laminated body are pressure-bonded.

When laminating the first laminated body and the second laminated body, the first laminated body and the second laminated body may be aligned for the purpose of improving the quality of the organic EL display device obtained by the present invention. preferable. When aligning the first laminated body and the second laminated body, it is preferable to form an alignment mark on the first laminated body and the second laminated body in advance and perform the alignment based on the alignment mark. Since the alignment mark and the method for forming the alignment mark can be the same as the alignment mark and the method for forming the alignment mark used in a general organic EL display device, the description thereof is omitted here.

Since the bonding step in the present invention can be the same as the bonding process performed in a general method for manufacturing an organic EL display device, a specific description here will be omitted.

4. Other Steps The method for manufacturing the organic EL display device of the present invention includes, if necessary, other steps in addition to the above-mentioned first laminate preparation step, second laminate preparation step, and bonding step. You may. Examples of other steps include a third layer forming step for forming the third layer, a functional layer forming step for forming various functional layers, and the like. Since the third layer forming step and the functional layer forming step can be the same as those described in the above-mentioned "A. Organic EL display device 4. Other members", the description here is made. Omit.

D. Barrier layer for organic EL display device The barrier layer for organic EL display device of the present invention has an inorganic layer and an organic layer arranged on one surface of the inorganic layer, and is used for an organic EL display device. It is a characteristic member.

According to the present invention, the structure having an inorganic layer and an organic layer makes it possible to obtain a barrier layer that exhibits excellent barrier properties against water vapor and has excellent flexibility.

The barrier layer for the organic EL display device of the present invention can be the same as the content described in the above-mentioned "A. Organic EL display device 1. 1st laminated body (1) 1st layer". The description here is omitted.

The present invention is not limited to the above embodiment. The above embodiment is an example, and any one having substantially the same configuration as the technical idea described in the claims of the present invention and exhibiting the same effect and effect is the present invention. It is included in the technical scope of the invention.

[Example 1]
(First laminate preparation process)
As the first base material, a sheet-shaped polyimide film (manufactured by IST, Tohmed) having a size of 10 cm × 10 cm was prepared and placed in the chamber of a batch sputtering apparatus (SPF-530H manufactured by Anerva Co., Ltd.). Silicon was used as the target material, and the distance (TS distance) from the first base material was set to 50 mm.

Next, oxygen gas (manufactured by Taiyo Nippon Sanso Co., Ltd. (purity 99.99995% or more)), argon gas (manufactured by Taiyo Nippon Sanso Co., Ltd. (99.9999% or more)), nitrogen as additional gases during film formation Gas (manufactured by Taiyo Nippon Sanso Co., Ltd. (99.9999% or more)) was prepared. Next, the inside of the chamber was depressurized to an ^{ultimate vacuum degree of 2.5 × 10 -4} Pa by an oil rotary pump and a cryopump. Next, argon gas was introduced into the chamber at a flow rate of 30 sccm and oxygen gas at 6 sccm, and the opening / closing degree of the valve between the vacuum pump and the chamber was controlled to maintain the pressure inside the chamber at 0.25 Pa and RF magnetron sputtering. By the method, a first inorganic layer made of a silicon oxide film having a thickness of 30 nm was formed on the first base material at an input power of 1.2 kW. In addition, sccm is an abbreviation for standard cubic centimeter per minute, and the same applies to the following.

An overcoat material (Hitaroid 7927 manufactured by Hitachi Kasei Co., Ltd.) was spin-coated on the obtained first inorganic layer so as to have a film thickness of 200 nm, and then heat-treated at 150 ° C. for 30 minutes to obtain a first organic layer. ..

The above-mentioned film forming step of the first inorganic layer and the first organic layer forming step were repeated twice in order to form the first inorganic layer, the first organic layer, the second inorganic layer, and the second organic layer. The first layer was formed. In this way, a first laminated body having a first base material and a first layer was obtained.

(Preparation process of the second laminated body)
A second laminated body was obtained by the same method as the first laminated body except that an organic EL layer was formed between the second base material and the second layer.

(Lasting process)
The second laminate was bonded to a tempered glass substrate (Dragonrail, Asahi Glass Co., Ltd.) having a thickness of 0.7 mm via a double-sided tape (Nitta Corporation CS2325NA2). Next, an adhesive material (PIG7424 manufactured by JNC Corporation) was spin-coated on the second laminate so as to have a film thickness of 2.0 μm, and then bonded to the first laminate using a hand roller, and 30 at 150 ° C. By heat-treating for a minute, the first laminated body and the second laminated body were bonded together. Then, it was cooled under the condition of −30 ° C., and the tempered glass substrate was peeled off. In this way, the organic EL display device of the present invention was obtained.

[Example 2]
An organic EL display device was obtained in the same manner as in Example 1 except that boron was used as a target material when the first inorganic layer and the second inorganic layer were formed into a film by a sputtering method.

[Example 3]
When the first inorganic layer and the second inorganic layer were formed by the sputtering method, the same as in Example 1 except that argon gas was introduced into the chamber at a flow rate of 30 sccm, oxygen gas 1.8 sccm, and nitrogen gas 4.2 sccm. Obtained an organic EL display device.

[Example 4]
When the first inorganic layer and the second inorganic layer are formed by the sputtering method, an organic EL display is performed in the same manner as in Example 1 except that argon gas is introduced into the chamber at a flow rate of 30 sccm, oxygen gas 3 sccm, and nitrogen gas 3 sccm. Obtained the device.

[Example 5]
When the first inorganic layer and the second inorganic layer were formed by the sputtering method, the same as in Example 1 except that argon gas was introduced into the chamber at a flow rate of 30 sccm, oxygen gas 4.2 sccm, and nitrogen gas 1.8 sccm. Obtained an organic EL display device.

[Example 6]
The step of forming the inorganic layer and the step of forming the organic layer are repeated three times in order, and the first inorganic layer, the first organic layer, the second inorganic layer, the second organic layer, the third inorganic layer and the third organic layer are repeated three times in order. An organic EL display device was obtained in the same manner as in Example 1 except that the first layer composed of the above was formed.

[Comparative Example 1]
An organic EL display device was obtained in the same manner as in Example 1 except that the inorganic layer was not formed by the sputtering method in the first layer forming step.

[Comparative Example 2]
An organic EL display device was obtained in the same manner as in Example 1 except that the organic layer was not formed in the first layer forming step.

[Example 7]
An organic EL display device was obtained in the same manner as in Example 1.

[Example 8]
An organic EL display device was obtained in the same manner as in Example 7 except that the thicknesses of the first organic layer and the second organic layer were set to 400 nm.

[Example 9]
An organic EL display device was obtained in the same manner as in Example 7 except that the thicknesses of the first inorganic layer and the second inorganic layer were set to 100 nm.

[Example 10]
An organic EL display device was obtained in the same manner as in Example 7, except that the thickness of the first inorganic layer and the second inorganic layer was 100 nm, and the thickness of the first organic layer and the second organic layer was 400 nm.

[Comparative Example 3]
An organic EL display device was obtained in the same manner as in Example 7 except that the thicknesses of the first inorganic layer and the second inorganic layer were set to 10 nm.

[Comparative Example 4]
An organic EL display device was obtained in the same manner as in Example 7 except that the thickness of the first inorganic layer and the second inorganic layer was 10 nm and the thickness of the first organic layer and the second organic layer was 400 nm.

[Comparative Example 5]
An organic EL display device was obtained in the same manner as in Example 7 except that the thicknesses of the first inorganic layer and the second inorganic layer were set to 200 nm.

[Comparative Example 6]
An organic EL display device was obtained in the same manner as in Example 7, except that the thicknesses of the first inorganic layer and the second inorganic layer were 200 nm, and the thicknesses of the first organic layer and the second organic layer were 400 nm.

[Evaluation]
(Peeling of adhesive layer)
The presence or absence of peeling from the adhesive layer when the bending durability test was performed on the obtained organic EL display device was evaluated as follows. The bending endurance test was carried out by carrying out the bending endurance test having a bending radius of 3 mm 200,000 times or more in an environment of a temperature of 60 ° C. and a humidity of 90%. The results are shown in Tables 3 and 4.
◯: The adhesive layer was not peeled off.
X: The adhesive layer was peeled off.

(Visible Light Transmittance)
Using a spectrophotometer (UV-2450 manufactured by Shimadzu Corporation), the measurement was performed at a measurement wavelength of 380 nm or more and 780 nm or less, and the average value of the transmittance at 500 nm or more and 600 nm or less was calculated. The transmittance here is the visible light transmittance of the first layer.
The results are shown in Table 3.

(Barrier property)
The water vapor transmittance of the obtained first laminated body was measured. The water vapor transmittance was measured using a water vapor transmittance measuring device (PERMATRAN-W 3/31 manufactured by MOCON) at a temperature of 40 ° C. and a humidity of 100% RH.
The results are shown in Tables 3 and 4.

(Flexibility)
The flexibility of the first layer when the bending durability test was performed on the obtained organic EL display device was evaluated as follows. The bending endurance test was carried out by carrying out the bending endurance test having a bending radius of 3 mm 200,000 times or more in an environment of a temperature of 60 ° C. and a humidity of 90%.
◯: No particular problem occurred in the first layer.
X: The inorganic layer constituting the first layer was cracked.
The results are shown in Tables 3 and 4.

10a ... 1st base material 10b ... 2nd base material 20a ... 1st laminated body 20b ... 2nd laminated body 30a ... 1st layer 30b ... 2nd layer 60 ... Adhesive layer 100 ... Organic EL display device

Claims (7)

A first substrate and a first laminate having a first layer arranged on one surface of the first substrate, and
The second base material, the organic electroluminescence device base material provided with the organic electroluminescence layer arranged on one surface of the second base material, and the side of the organic electroluminescence layer opposite to the second base material. A second laminate having a second layer arranged on the surface and
It has an adhesive layer sandwiched between the first laminated body and the second laminated body, and has.
The thickness of the first layer is 450 nm or more and 600 nm or less.
The surface of the first laminated body on the first layer side and the surface of the second laminated body on the second layer side face each other via the adhesive layer.
The first layer, the inorganic layer, and possess an organic layer disposed on one surface of the inorganic layer,
The inorganic layer is composed of _SiO x _{N y,} wherein x in the _SiO x _{N y} is 3 or more and 7 or less, wherein y organic electroluminescent display device according to claim der Rukoto 3 to 7. In the first layer, the inorganic layer and the organic layer are repeatedly laminated a plurality of times.
The organic electroluminescence display device according to claim 1, wherein the thickness of the inorganic layer is 11 nm or more and less than 200 nm. A first substrate and a first laminate having a first layer arranged on one surface of the first substrate, and
The second base material, the organic electroluminescence device base material provided with the organic electroluminescence layer arranged on one surface of the second base material, and the side of the organic electroluminescence layer opposite to the second base material. A second laminate having a second layer arranged on the surface and
It has an adhesive layer sandwiched between the first laminated body and the second laminated body, and has.
The thickness of the first layer is 450 nm or more and 1000 nm or less.
The surface of the first laminated body on the first layer side and the surface of the second laminated body on the second layer side face each other via the adhesive layer.
The first layer has an inorganic layer and an organic layer arranged on one surface of the inorganic layer.
The thickness of the inorganic layer is Ri 200nm less der than 11 nm,
The inorganic layer is composed of _SiO x _{N y,} wherein x in the _SiO x _{N y} is 3 or more and 7 or less, wherein y organic electroluminescent display device according to claim der Rukoto 3 to 7. The organic electro-organic according to any one of claims 1 to 3, wherein the water vapor transmittance of the first laminated body is 9.0 × 10 ^-2 g / m ^{2 days or less.} Luminescence display device. With the base material
It has a first layer arranged on one surface of the base material and has a first layer.
The first layer has an inorganic layer and an organic layer arranged on one surface of the inorganic layer.
The thickness of the first layer is 450 nm or more and 600 nm or less.
The inorganic layer is composed of _SiO x _{N y,} wherein x in the _SiO x _{N y} is 3 or more and 7 or less, wherein y is 3 or more and 7 or less,
A laminate for an organic electroluminescence display device, which is characterized in that it is used in an organic electroluminescence display device. The laminate for an organic electroluminescence display device according to claim 5, wherein the water vapor transmittance is 9.0 × 10 ^-2 g / m ^{2 days or less.} A first laminate preparation step of preparing a first laminate having a first substrate and a first layer arranged on one surface of the first substrate, and a first laminate preparation step.
The second base material, the organic electroluminescence device base material provided with the organic electroluminescence layer arranged on one surface of the second base material, and the side of the organic electroluminescence layer opposite to the second base material. A second laminate preparation step of preparing a second laminate having a second layer arranged on a surface, and
It has a bonding step of bonding via an adhesive layer so that the surface of the first laminated body on the first layer side and the surface of the second laminated body on the second layer side face each other.
The first layer, the inorganic layer, and possess an organic layer disposed on one surface of the inorganic layer,
The inorganic layer is composed of _SiO x _{N y,} wherein x in the _SiO x _{N y} is 3 or more and 7 or less, wherein y is an organic electroluminescent display device comprising der Rukoto 3 to 7 Production method.

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