JP6423575B2 - Optical film, optical film transfer body, image display device, and optical film manufacturing method - Google Patents

Description

  The present invention relates to an optical film that is disposed on, for example, an image display panel and reduces reflection of extraneous light by controlling a polarization plane.

  Conventionally, with respect to an image display panel or the like, a method has been proposed in which an optical film is disposed on the exit surface of the image display panel and the reflection of extraneous light is reduced by controlling the polarization plane with the optical film. This optical film is composed of a linearly polarizing plate and a circularly polarizing plate, and converts external light directed to the panel surface of the image display panel into linearly polarized light by the linearly polarizing plate and then converts it to circularly polarized light by the subsequent circularly polarizing plate. Here, the extraneous light by the circularly polarized light is reflected by the surface of the image display panel or the like, but the rotation direction of the polarization plane is reversed during this reflection. As a result, the reflected light is converted from the circularly polarizing plate to linearly polarized light in the direction shielded by the linearly polarizing plate, and then shielded by the subsequent linearly polarizing plate. Is significantly suppressed.

  With regard to this optical film, Patent Document 1 and the like propose a method of configuring this optical film with positive dispersion characteristics by configuring a circularly polarizing plate by combining a half-wave plate and a quarter-wave plate. ing. In the case of this method, an optical film can be constituted with positive dispersion characteristics in a wide wavelength band used for displaying a color image.

  By the way, such an optical film has a retardation layer for a half-wave plate functioning as a half-wave plate and a quarter-wave plate for the purpose of ensuring excellent uniform coating properties (leveling properties). It is conceivable to add a fluorine compound to the liquid crystal material that forms the retardation layer for a quarter-wave plate that functions as However, it has been found that when a fluorine compound is added, the wettability is remarkably deteriorated, the coating solution for forming the alignment layer is repelled, and the alignment layer cannot be formed properly.

JP-A-10-68816

  An object of the present invention is to provide an optical film in which an alignment layer is appropriately formed on a retardation layer containing a fluorine compound, an optical film transfer body, an image display device, and an optical film manufacturing method. .

  The present inventor has made extensive studies to solve the above problems, and adds a fluorine compound to the alignment layer provided between the retardation layer for a half-wave plate and the retardation layer for a quarter-wave plate, And the present invention has been completed.

  (1) A substrate made of a transparent film, an optical functional layer of a linear polarizing plate serving as a linear polarizing plate, and an optical functional layer of a circular polarizing plate serving as a circular polarizing plate are laminated, The optical function layer of the plate provides a half-wave plate retardation layer that imparts a phase difference of ½ wavelength to transmitted light, and a quarter wavelength that imparts a phase difference of a quarter wavelength to transmitted light. A multilayer structure having at least a retardation layer for a plate, an alignment layer provided between the retardation layer for a half-wave plate and the retardation layer for a quarter-wave plate, and for the half-wave plate The retardation layer and the quarter-wave plate retardation layer are formed by curing a retardation layer forming resin, and the alignment layer is formed by curing an alignment layer forming resin, and the retardation layer forming resin And the alignment layer forming resin is added with a fluorine compound.

  (2) The concentration of the fluorine compound added to the alignment layer forming resin that forms the alignment layer is that of the fluorine compound added to the retardation layer forming resin that forms the retardation layer for the half-wave plate. The optical film as described in (1), wherein the optical film has a density or higher.

  (3) The fluorine concentration agent added to the alignment layer forming resin that forms the alignment layer is a fluorine compound added to the retardation layer forming resin that forms the retardation layer for a quarter-wave plate. The optical film according to (1) or (2), wherein the optical film has a concentration equal to or lower than the concentration.

(4) The optical film according to any one of (1) to (3), wherein the fluorine compound added to the retardation layer forming resin and the alignment layer forming resin is the same compound.
(5) A retardation layer for a half-wave plate that imparts a phase difference of ½ wavelength to transmitted light, and a retardation for a quarter-wave plate that imparts a phase difference of ¼ wavelength to transmitted light A transfer layer having a multilayer structure having at least a layer, an alignment layer provided between the retardation layer for a half-wave plate and the retardation layer for a quarter-wave plate, and a support that holds the transfer layer The retardation layer for half-wave plates and the retardation layer for quarter-wave plates are formed by curing a retardation forming resin, and the alignment layer is formed by curing an alignment layer forming resin. An optical film transfer body, wherein the phase difference-forming resin and the alignment layer-forming resin are added with a fluorine compound.

  (6) The concentration of the fluorine compound added to the alignment layer forming resin that forms the alignment layer is that of the fluorine compound added to the retardation layer forming resin that forms the retardation layer for the half-wave plate. The transfer body for optical film according to (5), wherein the density is not less than the concentration.

  (7) The fluorine concentration agent added to the alignment layer forming resin that forms the alignment layer is a fluorine compound added to the retardation layer forming resin that forms the retardation layer for a quarter-wave plate. The transfer body for optical film according to (5) or (6), wherein the density is not more than the density.

  (8) The optical film transfer body according to any one of (5) to (7), wherein the fluorine compound added to the retardation layer forming resin and the alignment layer forming resin is the same compound. .

  (9) For the optical film according to any one of (5) to (8), wherein the support is a separator film, and the transfer layer includes an adhesive layer covered with the support. Transcript.

  (10) A substrate made of a transparent film, an optical functional layer of a linear polarizing plate that functions as a linear polarizing plate, and an optical functional layer of a circular polarizing plate that functions as a circular polarizing plate are laminated, The optical functional layer of the plate is an optical functional layer formed by the transfer layer provided on the optical film transfer body of any one of (5) to (9) on the optical functional layer of the linearly polarizing plate. An optical film characterized by.

  (11) An image display device comprising the optical film according to any one of (1) to (4) or (10).

  (12) A half-wave plate retardation layer for imparting a half-wave phase difference to transmitted light, and a quarter-wave plate retardation for imparting a quarter-wave phase difference to transmitted light A transfer layer having a multilayer structure having at least a layer and an alignment layer provided between the retardation layer for a half-wave plate and the retardation layer for a quarter-wave plate on a support that holds the transfer layer In the manufacturing process of the transfer body to be formed on, the manufacturing process of the linear polarizing plate that forms the optical functional layer of the linear polarizing plate serving as the linear polarizing plate on the transparent substrate, and the optical functional layer of the linear polarizing plate A transfer step of transferring the transfer layer on the support produced in the transfer member manufacturing step, wherein the transfer member manufacturing step includes the half-wave plate retardation layer and the 1/4 wavelength. By curing the retardation forming resin to which the fluorine compound is added to the retardation layer for the plate Form, method of manufacturing the optical film of the alignment layer, be formed by curing the oriented layer forming resin fluorine compound is added to it said.

  According to the present invention, an alignment layer can be appropriately formed on a retardation layer containing a fluorine compound.

It is a figure which shows the image display apparatus which concerns on 1st Embodiment of this invention. It is a figure where it uses for description of the optical film provided in the image display apparatus of FIG. It is a figure which shows the transfer film applied to the optical film provided in the image display apparatus of FIG. It is a figure which shows the manufacturing process of the optical film provided in the image display apparatus of FIG. It is a figure which shows the manufacturing process of the transfer film of FIG. It is a figure which shows the continuation of FIG. It is a figure which shows the transfer film which concerns on 2nd Embodiment of this invention. It is a figure which shows the manufacturing process of the transfer film of FIG. It is a figure which shows the image display apparatus which concerns on 3rd Embodiment of this invention. It is a figure which shows the transfer film applied to the optical film provided in the image display apparatus of FIG. It is a figure which shows the image display apparatus which concerns on 4th Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a diagram showing an image display apparatus according to the first embodiment of the present invention. In the image display device 1, the optical film 3 is disposed on the panel surface of the image display panel 2. The image display panel 2 is an organic EL panel having a flexible sheet shape, and displays a desired color image.

  The optical film 3 is an optical film that suppresses reflection of extraneous light arriving at the image display panel 2 by controlling the polarization plane. For this reason, the optical film 3 is configured by laminating a linearly polarizing plate 5 and a circularly polarizing plate 6. The optical film 3 is held by being attached to the panel surface of the image display panel 2 by the pressure-sensitive adhesive layer 4 after peeling the separator film (not shown) and exposing the pressure-sensitive adhesive layer 4 by the pressure-sensitive adhesive. Further, the linearly polarizing plate 5 and the circularly polarizing plate 6 are integrated through the adhesive layer 7.

  The circularly polarizing plate 6 includes a portion 8 (referred to as a retardation layer for a quarter-wave plate) that functions as a quarter-phase plate that imparts a phase difference corresponding to a quarter wavelength to transmitted light, and 1 for transmitted light. / A laminated body with a portion 9 (referred to as a retardation layer for a half-wave plate) that functions as a half-phase plate that imparts a phase difference for two wavelengths. Thereby, the circularly polarizing plate 6 ensures positive dispersion characteristics in a wide wavelength band used for displaying a color image, and the optical film 3 sufficiently suppresses reflection of external light in a wide wavelength band.

  Accordingly, in the image display device 1, the quarter-wave plate retardation layer 8, the half-wave plate retardation layer 9, and the linear polarizing plate 5 are sequentially arranged from the display screen side of the image display panel 2. . Further, as shown in FIG. 2, the slow axes of the half-wave plate retardation layer 9 and the quarter-wave plate retardation layer 8 with respect to the transmission axis of the linearly polarizing plate 5 indicated by arrows (respectively arrows) Are arranged so as to form angles of 15 degrees and 73 degrees counterclockwise, respectively.

  More specifically, the quarter-wave plate retardation layer 8 is formed with an in-plane retardation (Re) of 125 nm or more and 150 nm or less, and the half-wave plate retardation layer 9 is provided with an in-plane retardation (Re) Re) is created when 235 nm or more and 285 nm or less. Thereby, the optical film 3 emits the transmitted light in the visible light region wavelength region (450 to 750 nm) incident from the linearly polarizing plate 5 side as circularly polarized light having an ellipticity of 0.8 or more.

The circularly polarizing plate 6 is provided with a quarter-wave plate shaping resin layer 10, a quarter-wave plate alignment film 11, and a quarter-wave plate retardation layer 8 sequentially from the image display panel 2 side. .
The quarter-wave plate shaping resin layer 10 is a shaping resin layer used for shaping a fine uneven shape, and in this embodiment, an ultraviolet curable resin is applied to the shaping resin. In addition, about this ultraviolet curable resin, various resin used for a shaping process, such as an acrylic type, can be applied widely. The quarter-wave plate shaping resin layer 10 has a fine concavo-convex shape formed on the surface by the shaping treatment, and the circularly polarizing plate 6 is 1 in accordance with the surface shape of the quarter-wave plate shaping resin layer 10. A quarter-wave plate alignment film 11 is formed. By forming the quarter-wave plate alignment film 11 on the quarter-wave plate shaping resin layer 10, the alignment layer related to the quarter-wave plate retardation layer 8 is formed.

  The quarter-wave plate retardation layer 8 is formed of a liquid crystal material that is solidified (cured) while maintaining refractive index anisotropy, and the circularly polarizing plate 6 has an alignment of the liquid crystal material of ¼ wavelength. Patterning is performed by the alignment regulating force of the plate alignment film 11. The liquid crystal material for forming the quarter-wave plate retardation layer 8 is added with a fluorine compound in order to realize excellent uniform coating property (leveling property) and to keep the appearance of the optical film suitably.

Subsequently, the circularly polarizing plate 6 is provided with a half-wave plate shaping resin layer 12, a half-wave plate alignment film 13, and a half-wave plate retardation layer 9 in this order.
The half-wave plate shaping resin layer 12 is a shaping resin layer used for shaping a fine uneven shape, and in this embodiment, an ultraviolet curable resin in which a fluorine compound is added to the shaping resin. Applies. The half-wave plate shaping resin layer 12 has a fine irregular shape formed on the surface by the shaping treatment, and the circularly polarizing plate 6 is 1 in accordance with the surface shape of the half-wave plate shaping resin layer 12. A two-wavelength plate alignment film 13 is formed. By forming the half-wave plate orientation film 13 on the half-wave plate shaping resin layer 12, the orientation layer related to the half-wave plate retardation layer 9 is formed.

  The retardation layer 9 for a half-wave plate is formed of a liquid crystal material that is solidified (cured) while maintaining the refractive index anisotropy, and the circularly polarizing plate 6 has an orientation of the liquid crystal material of 1/2 wavelength. Patterning is performed by the orientation regulating force of the plate alignment film 13. As with the quarter-wave plate retardation layer 8, the liquid crystal material forming the half-wave plate retardation layer 9 achieves excellent uniform coating properties (leveling properties), and the appearance of the optical film In order to keep it suitable, a fluorine compound is added.

  Here, the above-described ultraviolet curable resin used for forming the half-wave plate shaping resin layer 12, the quarter-wave plate retardation layer 8, and the half-wave plate retardation layer 9 are provided. The same compound is used as the fluorine compound added to the liquid crystal material to be formed.

  Further, the fine uneven shape related to the alignment film 13 for half-wave plates and the alignment film 11 for quarter-wave plates is formed by a line-shaped uneven shape extending in one direction. Are formed so that the directions extending in the direction of 15 ° and 73 ° counterclockwise with respect to the transmission axis of the linear polarizing plate 5, respectively.

  In the linear polarizing plate 5, the lower surface side of the base material 15 made of a transparent film such as TAC (triacetyl cellulose) is saponified, and then the optical functional layer 16 is disposed. In addition, the base material 15 is replaced with poly (meth) acrylate methyl, poly (meth) acrylate butyl, (meth) acrylate methyl- (meth) acrylate copolymer, (meth) acrylate- A resin such as an acrylic resin such as a styrene copolymer, a glass such as soda glass, potash glass, lead glass, or quartz glass can be used.

  The optical functional layer 16 is a part that bears an optical function as a linear polarizing plate, and is produced, for example, by adsorbing and orienting iodine compound molecules on a film material of polyvinyl alcohol (PVA).

  Thus, in the configuration related to the circularly polarizing plate 6 of the optical film 3, the quarter-wave plate retardation layer 8 and the half-wave plate retardation layer 9 can be formed with thicknesses of about 1 μm and 2 μm, respectively. Each of the shaping resin layers 10 and 12 can be formed with a thickness of about 2 μm, and the adhesive layer 4 can be formed with a thickness of 15 μm or less. Moreover, in the structure which concerns on the linearly-polarizing plate 5, the base material 15 can be comprised by about 30 micrometers in thickness, and the optical function layer 16 and the adhesion layer 7 can be comprised by about 20 micrometers or less and 15 micrometers in thickness, respectively. As a result, the optical film 3 can be made sufficiently thin as a whole with a thickness of 87 μm or less. Thereby, the optical film 3 can ensure sufficient flexibility.

[Transcript]
In the optical film 3, the circularly polarizing plate 6 and the linearly polarizing plate 5 are integrated through an adhesive layer 7, and a transfer method is applied to this integration process.

  Here, in the transfer method, for example, when a desired layer is formed on a base material, the layer is not directly formed on the base material but can be peeled once on a releasable support. After forming the layer by laminating the layers, according to the process, demand, etc., the layer formed on the support is finally deposited on the substrate (the substrate to be transferred) on which the layer is to be laminated. In this method, a desired layer is formed on the substrate by peeling and removing the support.

  In this embodiment, the layer configuration related to the circularly polarizing plate 6 is laminated on the linearly polarizing plate 5 by a transfer method. Therefore, the substrate to be transferred is the linearly polarizing plate 5, and the layer (transfer layer) used for transfer is a quarter-wave plate shaping resin layer 10, a quarter-wave plate alignment film 11, and a quarter wavelength. It is a laminate of a plate retardation layer 8, a half-wave plate shaping resin layer 12, a half-wave plate alignment film 13, and a half-wave plate retardation layer 9.

  FIG. 3 is a diagram showing a configuration of a transfer film 20 as the transfer body. The transfer film 20 is formed on the support substrate 21 in sequence, the quarter-wave plate shaping resin layer 10, the quarter-wave plate alignment film 11, and the quarter-wave plate position according to the circularly polarizing plate 6. A retardation layer 8, a half-wave plate shaping resin layer 12, a half-wave plate alignment film 13, and a half-wave plate retardation layer 9 are provided.

Here, the support substrate 21 detachably carries a layer (transfer layer) to be transferred, and after the transfer layer is adhered and laminated on the transfer substrate, it is appropriately peeled off and removed appropriately. It is a substrate. In this embodiment, a PET (Polyethylene terephthalate) film, which is a transparent film material, is applied, whereby the transfer film 20 is configured to be able to inspect optical characteristics. The PET film is corona-treated, thereby appropriately setting the adhesion between the PET film and a release layer described later. The support substrate 21 may have a sheet shape as a whole. The support substrate 21 may be a resinous film material made of a resin such as a polyester resin such as polyethylene terephthalate, polybutylene terephthalate, or polyethylene naphthalate , or a polyolefin resin such as polypropylene or polymethylpentene. In addition, the thickness of the support base material 21 is 20-100 micrometers. When the peelability from the transfer layer is insufficient, the support substrate 21 is provided with a release layer that promotes peeling on the transfer layer side.

  For the release layer, a material having relatively high adhesion to the support substrate 21 (low releasability) and low adhesion to the transfer layer (high releasability) can be applied. In this embodiment, since the lowermost layer of the transfer layer is the quarter-wave plate shaping resin layer 10 made of an ultraviolet curable resin, for example, a silicon resin (organosilicon-based) is used for the support substrate 21 described above. Polymer compound), fluorine-based resin, melamine resin, epoxy resin, or a mixture of these resins and other resins (acrylic resin, cellulose-based resin, polyester resin, etc.) as appropriate. In this embodiment, a release layer made of melamine resin is provided on the support substrate 21 made of the above-described PET film, and wettability with respect to the coating solution of the ultraviolet curable resin provided on the release layer is ensured.

  Instead of providing a release layer made of melamine resin on the corona-treated PET film in this way, a PET film that has not been surface-treated at all may be applied to the support substrate to omit the release layer. Alternatively, a release layer may be omitted by applying a TAC film without a so-called permeation layer called a nonsol to the support substrate. In this way, the configuration can be simplified.

  Incidentally, when the peelability by the release layer is insufficient, a release layer may be provided between the support substrate 21 and the release layer, and this release layer may supplement the peelability by the release layer. . Note that a material having relatively low adhesion to the support film (high peelability) and high adhesion to the release layer (low peelability) can be applied to the release layer. More specifically, in this embodiment, the release layer includes an acrylic resin, a cellulose resin, a polyester resin, a urethane resin, a vinyl chloride-vinyl acetate copolymer, or a mixture of two or more selected from the above. Alternatively, a mixture of one or more selected from the above and other resins is used. The thickness of the release layer is usually about 1 to 10 μm. Moreover, a peeling layer may be provided in the support base material 21, and may be provided in a peeling layer.

  The quarter-wave plate shaping resin layer 10 is obtained by applying an ultraviolet curable resin coating solution on the support substrate 21 or on the release layer formed on the support substrate 21. The quarter-wave plate alignment film 11 is prepared by coating, and the quarter-wave plate alignment film 11 is applied to a quarter-wave plate using a molding die (roll plate) in which a fine uneven shape for molding is formed on the peripheral side surface. The mold resin layer 10 is formed by a shaping process. The quarter-wave plate retardation layer 8 is formed by applying and curing a liquid crystal material to which a fluorine compound is added on the quarter-wave plate alignment film 11.

  The half-wave plate shaping resin layer 12 is formed by applying an ultraviolet curable resin coating solution to which a fluorine compound is added on the quarter-wave plate retardation layer 8. Similarly to the quarter-wave plate alignment film 11, the half-wave plate alignment film 13 is formed by molding the half-wave plate molding resin layer 12 using a molding die. The The half-wave plate retardation layer 9 is formed by applying and curing a liquid crystal material to which a fluorine compound is added on the half-wave plate alignment film 13. Thus, in the transfer body, the quarter-wave plate shaping resin layer 10, the quarter-wave plate alignment film 11, the quarter-wave plate retardation layer 8, which has a layer structure related to these circularly polarizing plates, The half-wave plate shaping resin layer 12, the half-wave plate alignment film 13, and the half-wave plate retardation layer 9 are transfer layers used for transfer.

Here, since the fluorine compound is added to the liquid crystal material that forms the retardation layer 8 for the quarter wavelength plate, the fluorine compound is added to the ultraviolet curable resin that forms the shaping resin layer 12 for the half wavelength plate. When not included, a phenomenon that the coating solution of the ultraviolet curable resin is repelled from the surface of the quarter-wave plate retardation layer 8 occurs, and the half-wave plate shaping resin layer 12 is removed. It cannot be properly formed on the retardation layer 8 for a quarter-wave plate.
Therefore, as described above, the same compound as the fluorine compound added to the liquid crystal material is added to the ultraviolet curable resin forming the half-wave plate shaping resin layer 12. Thereby, the half-wave plate shaping resin layer 12 is appropriately formed on the quarter-wave plate retardation layer 8 without causing a phenomenon that the coating liquid is repelled.
The fluorine compound added to the material forming each layer may be any fluorine-containing alcohol, fluorine-containing ether, or fluorine-containing ester having a boiling point of 300 ° C. or less in consideration of remaining in the coating film. May be.
Specific examples of the fluorine-containing alcohol include 1H, 1H-pentafluoropropanol, 1H, 1H-heptafluorobutanol, 4,4,5,5,5-pentafluoro-1-pentanol, and 2- (perfluorobutyl) ethanol. , 3- (perfluorobutyl) propanol, 3- (perfluorohexyl) propanol, 6- (perfluorobutyl) hexanol, 2- (perfluorohexyl) ethanol, 3- (perfluorohexyl) propanol, 6- (perfluorohexyl) propanol Fluorohexyl) hexanol, 2- (perfluorooctyl) ethanol, 2- (perfluorooctyl) propanol, 3- (perfluorooctyl) propanol, 6- (perfluorooctyl) hexanol, 2- (perfluodododecyl) ethanol , 6- (Par (Luoro-1-methylethyl) hexanol, 1H, 1H-nonafluoropentanol, 1H, 1H-trifluoroethanol, 1H, 1H, 3H-tetrafluoropropanol, 1H, 1H, 3H-hexafluorobutanol, 1H, 1H, 5H-octafluoropentanol, 1H, 1H, 7H, -dodecafluoropentanol, 1H, 1H, 9H-hexadecafluorononanol, 2H-hexafluoro-2-propanol, 2,2,3,3-tetrafluoro -1,4-butanediol, 2,2,3,3,4,4-hexafluoro-1,5-pentanediol, 2,2,3,3,4,4,5,5-octafluoro-1 , 6-hexanediol, 2,2,3,3,4,4,5,5,6,6,7,7-dodecafluoro-1,8-octanediol, 2-par -Fluoropropoxy-2,3,3,3-tetrafluoropropanol, 1H, 1H-2,5-di (trifluoromethyl) -3,6-dioxaundecafluorononanol and the like.
Examples of fluorine-containing ethers include 2,2,2-trifluoroethyl methyl ether, 2,2,3,3,3-pentafluoropropyl methyl ether, 2,2,3,3,3-pentafluoropropyl difluoromethyl Ether, 2,2,3,3,3-pentafluoropropyl-1,1,2,2-tetrafluoroethyl ether, 1,1,2,2-tetrafluoroethyl methyl ether, 1,1,2,2 -Tetrafluoroethyl ether, 1,1,2,2-tetrafluoroethyl-2,2,2-trifluoroethyl ether, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetra Fluoropropyl ether, hexafluoroisopropyl ether, 1,1,3,3,3-pentafluoro-2-trifluoromethylpropyl methyl ether Le, 1,1,2,3,3,3-hexafluoro-propyl ethyl ether, 2,2,3,4,4,4-hexafluorobutyl difluoromethyl ether, and the like.
Examples of fluorine-containing esters include ethyl trifluoroacetate, methyl perfluoropropionate, ethyl perfluoropropionate, methyl perfluorobutyrate, ethyl perfluorobutyrate, methyl difluoroacetate, ethyl difluoroacetate, ethyl 5H-octa Fluoropentanoate, ethyl 7H-dodecafluoropentanoate, methyl 2-trifluoromethyl-3,3,3-trifluoropropionate, 2,2,2-trifluoroethyl (meth) acrylate, 2,2, 3,3,3-pentafluoropropyl (meth) acrylate, 2,2,3,4,4,4-hexafluorobutyl (meth) acrylate, 2,2,3,3,4,4,4-heptafluoro Butyl (meth) acrylate, 2- (perfluoro Butyl) ethyl (meth) acrylate, 2- (perfluorohexyl) ethyl (meth) acrylate, 1H, 1H, 3H-tetrafluoropropyl (meth) acrylate, 1H, 1H, 5H-octafluoropentyl (meth) acrylate, 1H , 1H, 7H-dodecafluoroheptyl (meth) acrylate, 1H-1- (trifluoromethyl) trifluoroethyl (meth) acrylate, 1H, 1H, 3H-hexafluorobutyl (meth) acrylate, 1,2,2, Examples include 2-tetrafluoro-1- (trifluoromethyl) ethyl (meth) acrylate, 1H, 1H-pentadecafluorooctyl (meth) acrylate, and the like.

  Further, the transfer film 20 is provided with the adhesive layer 7 and the separator film 23 on the transfer layer according to the layer configuration related to the circularly polarizing plate 6.

Here, the adhesive layer 7 is a layer for adhering the transfer layer and the substrate to be transferred. Depending on the material of the transfer layer and the material of the substrate to be transferred, a material having high adhesion is applied to both. In this embodiment, cellulose (fiber) based resins such as acetyl cellulose (cellulose acetate), nitrocellulose (cellulose nitrate or nitrified cotton), cellulose acetate propionate, poly (meth) methyl acrylate, poly (meta) ) Acrylic resin such as butyl acrylate, methyl (meth) acrylate- (meth) butyl acrylate copolymer, methyl (meth) acrylate-styrene copolymer, urethane resin, polyester resin, vinyl chloride-vinyl acetate Materials such as polymers, ionomers, natural or synthetic rubbers are used. The thickness of the adhesive layer is about 1 to 30 μm.
The adhesive layer 7 may use an ultraviolet curable resin. In this case, the thickness of the optical film can be further reduced.

  The separator film 23 is a release sheet that covers the surface of the pressure-sensitive adhesive layer 7 so that it can be released. The separator film 23 is provided to prevent the adhesive layer 7 from being exposed and causing unnecessary adhesion to unnecessary articles, and is peeled off and removed immediately before transfer.

[Manufacturing process of optical film]
FIG. 4 is a diagram illustrating a manufacturing process of the optical film 3. In the manufacturing process 30, the base material 15 on which the saponification treatment related to the linearly polarizing plate 5 has been executed and the film material related to the optical function layer 16 are provided by supply rolls 31 and 32. The transfer film 20 is provided by a supply reel 33. In this step 30, the transfer film 20 is pulled out from the supply reel 33, and the separator film 23 is peeled off by the peeling roll 34 to expose the adhesive layer 7. The separated separator film 23 is taken up on a take-up reel 36.

  In this step 30, film materials relating to the base material 15 and the optical function layer 16 are drawn from the supply rolls 31 and 32, respectively, laminated with the transfer film 20 from which the separator film 23 has been peeled off, and pressed by the pressing rollers 38A and 38B. Thereby, this process 30 integrates the base material 15, the optical function layer 16, and the transfer layer (manufacturing process of linearly polarizing plate, transfer process).

  Subsequently, in this step 30, the support base material 21 is peeled off by the peeling roller 39. The peeled support substrate 21 is taken up by a take-up roll 40. Subsequently, after the adhesive for the adhesive layer 4 is applied, the separator film 42 supplied from the supply reel 41 is attached by the pressure rollers 43A and 43B and wound around the take-up reel 44.

[Transfer manufacturing process]
5 and 6 are schematic diagrams illustrating the manufacturing process of the transfer film 20. In this manufacturing process 50, the support substrate 21 is pulled out from the supply reel 51, and a coating solution of an ultraviolet curable resin is applied by the die 52. In this manufacturing process 50, the roll plate 53 is a mold for molding in which the fine uneven shape related to the alignment film 11 for a quarter wavelength plate is formed on the peripheral side surface. In the manufacturing process 50, the support substrate 21 coated with the ultraviolet curable resin is pressed against the roll plate 53 by the pressure roller 54, and the ultraviolet curable resin is cured by irradiating the ultraviolet ray with the ultraviolet irradiation device 55 made of high pressure mercury slag. Let Thereby, the manufacturing process 50 transfers the uneven | corrugated shape formed in the surrounding side surface of the roll plate 53 to the support base material 21. FIG. Thereafter, the support substrate 21 is peeled off together with the ultraviolet curable resin cured from the roll plate 53 by the peeling roller 56, and a liquid crystal material to which a fluorine compound is added is applied by the die 59. After that, the liquid crystal material is cured by irradiating with ultraviolet rays from the ultraviolet irradiating device 57 and then wound around the take-up reel 58. By this series of processes, the quarter-wave plate shaping resin layer 10, the quarter-wave plate alignment film 11, and the quarter-wave plate retardation layer 8 are formed on the support substrate 21. .

  Subsequently, as shown in FIG. 6, in the manufacturing process 60, the support substrate 21 taken up from the take-up reel 58 is pulled out, and a coating solution of an ultraviolet curable resin to which a fluorine compound is added is applied by a die 62. Here, by adding an appropriate amount of a fluorine compound to the ultraviolet curable resin, the phenomenon that the coating liquid is repelled does not occur, and the ½ wavelength plate retardation layer 8 is formed on the ¼ wavelength plate retardation layer 8. The shaping resin layer 12 can be formed. In this manufacturing process 60, the roll plate 63 is a mold for molding in which the fine uneven shape related to the alignment film 13 for half-wave plate is formed on the peripheral side surface. In the manufacturing process 60, the support substrate 21 coated with the ultraviolet curable resin is pressed against the roll plate 63 by the pressure roller 64, and the ultraviolet curable resin is cured by irradiation with ultraviolet rays by the ultraviolet irradiation device 65 made of a high-pressure mercury lamp. Let Thereby, the manufacturing process 60 transfers the uneven | corrugated shape formed in the surrounding side surface of the roll plate 63 to the support base material 21. FIG. Thereafter, the support substrate 21 is peeled off together with the ultraviolet curable resin cured from the roll plate 63 by the peeling roller 66, and the liquid crystal material to which the fluorine compound is added is applied by the die 69. Thereafter, the liquid crystal material is cured by ultraviolet irradiation by the ultraviolet irradiation device 67, and then wound around the take-up reel 68. By a series of processes in this step 60, the quarter-wave plate shaping resin layer 10, the quarter-wave plate alignment film 11 and the quarter-wave plate retardation layer 8 formed on the support substrate 21. Further, a half-wave plate shaping resin layer 12, a half-wave plate alignment film 13, and a half-wave plate retardation layer 9 are sequentially formed. The structure which concerns on the circularly-polarizing plate 6 is created on the top. The transfer body is further provided with an adhesive layer 7 and a separator film 23.

[Evaluation of relationship between concentration of fluorine compound and occurrence of phenomenon of repelling coating solution]
1/4 wavelength plate retardation layer 8 and 1/2 when the concentration of the fluorine compound contained in the half-wave plate shaping resin layer 12 (alignment layer) is changed from 0% to 0.4%. The presence or absence of a phenomenon in which the coating liquid was repelled between the wave plate shaping resin layers 12 and between the half wave plate shaping resin layer 12 and the half wave plate retardation layer 9 was evaluated.
The evaluation results are summarized in Table 1 below. Here, the evaluation of the occurrence of the phenomenon of the coating liquid repelling was performed by visual inspection by an operator. The concentrations of the fluorine compounds contained in the quarter-wave plate retardation layer 8 and the half-wave plate retardation layer 9 were constant at 0.3% and 0.15%, respectively.

In Table 1, “x” indicates that a phenomenon of repelling the coating liquid has occurred, “Δ” indicates that a phenomenon of repelling the coating liquid has occurred, and an evaluation of “◯” indicates that the coating liquid has repelled. This indicates that no phenomenon occurred.
As shown in Table 1, when the concentration of the fluorine compound contained in the half-wave plate shaping resin layer 12 (alignment layer) on which the half-wave plate alignment film 13 is formed is 0%, that is, fluorine If the compound is not included, but no phenomenon that the coating liquid is repelled between half-wave plate for shaping resin layer 12 and the 1/2 wave plate retardation layer 9, position 1/4 wavelength plate A phenomenon that the coating solution is repelled occurs between the phase difference layer 8 and the half-wave plate shaping resin layer 12 .
Further, when the concentration of the fluorine compound is 0.1%, a phenomenon that the coating liquid is repelled does not occur between the half-wave plate for shaping resin layer 12 and the 1/2 wave plate retardation layer 9, 1 Between the retardation layer 8 for / 4 wavelength plate and the shaping resin layer 12 for ½ wavelength plate, although the wettability deterioration is slightly mitigated as compared with the 0% concentration state, the phenomenon that the coating solution is repelled is slightly Occur.
Furthermore, when the concentration of the fluorine compound is 0.4%, the phenomenon that the coating liquid is repelled does not occur between the quarter-wave plate retardation layer 8 and the half-wave plate shaping resin layer 12 . A phenomenon occurs in which the coating liquid is repelled between the half-wave plate shaping resin layer 12 and the half-wave plate retardation layer 9 .

On the other hand, when the concentration of the fluorine compound contained in the half-wave plate shaping resin layer 12 is 0.15%, the wettability is improved and the phenomenon that the coating liquid is repelled between the layers does not occur. On the quarter-wave plate retardation layer 8, the half-wave plate shaping resin layer 12 and the half-wave plate retardation layer 9 can be formed in appropriate close contact with each other.
From the above evaluation results, in order to prevent the phenomenon that the coating solution is repelled more effectively, the concentration of the fluorine compound contained in the half-wave plate shaping resin layer 12 is set to 1/4 phase plate retardation. It is desirable that the concentration is not more than the concentration of the fluorine compound in the layer 8 and not less than the concentration of the fluorine compound in the retardation layer 9 for half-wave plate. That is, in the evaluation of the present embodiment, the concentration of the fluorine compound contained in the half-wave plate shaping resin layer 12 is preferably 0.15% or more and 0.3% or less.

As described above, the invention of this embodiment has the following effects.
(1) Since the fluorine compound is contained in the half-wave plate shaping resin layer 12 (alignment layer) on which the half-wave plate alignment film 13 is formed, the half wavelength forming the transfer layer In the case where a fluorine compound is contained in the retardation layer 9 for plates and the retardation layer 8 for quarter-wave plates, a phenomenon occurs that the coating solution is repelled while ensuring excellent uniform coating properties (leveling properties). The half-wave plate shaping resin layer 12 is appropriately formed on the quarter-wave plate retardation layer 8 and the half-wave plate shaping resin layer 12 is formed. The half-wave plate retardation layer 9 can be formed appropriately.
(2) The concentration of the fluorine compound contained in the half-wave plate shaping resin layer 12 is equal to or higher than the concentration of the fluorine compound contained in the half-wave plate retardation layer 9, and 1 By setting the concentration to be equal to or less than the concentration of the fluorine compound contained in the retardation layer 8 for a / 4 wavelength plate, it is possible to more effectively suppress the phenomenon that the coating liquid of each layer of the transfer layer is repelled.
(3) The fluorine compound contained in the half-wave plate shaping resin layer 12 is the same as the fluorine compound contained in the quarter-wave plate retardation layer 8 and the half-wave plate retardation layer 9. Since it is a compound, generation | occurrence | production of the phenomenon in which the coating liquid of each layer of a transfer layer is repelled can be suppressed more effectively.

[Second Embodiment]
FIG. 7 is a view showing a transfer film according to the second embodiment of the present invention in comparison with FIG. In this transfer film 70, a laminated body of a separator film 71 and an adhesive layer 4 is disposed in place of the support substrate 21 made of PET film. The separator film 71 constitutes a support, and the adhesive layer 4 is a transfer layer. Part of Here, the separator film 71 and the adhesive layer 4 have a configuration relating to the arrangement of the optical film 3 on the image display panel 2 described above with reference to FIG. This embodiment is configured in the same manner as the first embodiment except that the configuration regarding the separator film 71 and the adhesive layer 4 is different.

  Therefore, in this embodiment, as shown in parentheses in FIGS. 5 and 6, in the transfer body manufacturing process, a laminate of the separator film 71 and the adhesive layer 4 is replaced with the supply reel 51 instead of the support base material 21. , The layer structure related to the circularly polarizing plate 6 is sequentially created, and the transfer film 70 is produced.

  In addition, as shown in FIG. 8 in comparison with FIG. 4, in the optical film manufacturing process, the structure for peeling off the support substrate 21 (39, 40: see FIG. 4), the adhesive layer, and the separator film 42 are arranged. The structure (41, 42, 43A, 43B: see FIG. 4) to be performed is omitted, and the optical film 3 is produced from the transfer film 70.

  As described above, in the present embodiment, even when a transfer body is produced by applying the laminate of the adhesive layer 4 and the separator film according to the optical film 3, the same effects as those in the first embodiment can be obtained. it can. In this case, after transferring the transfer layer, it is not necessary to provide the optical film adhesive layer and separator film again, so that the consumption of the production material can be reduced and the optical film can be produced efficiently. In addition, the process can be simplified.

[Third Embodiment]
FIG. 9 is a diagram showing an optical film according to the third embodiment of the present invention in comparison with FIG. FIG. 10 is a diagram showing a transfer film according to the third embodiment of the present invention in comparison with FIG. Note that, in the following description and drawings, the same reference numerals or the same reference numerals are given to the portions that perform the same functions as those in the first embodiment described above, and overlapping descriptions will be omitted as appropriate.
Unlike the optical film 3 of the first embodiment, the optical film 103 of the present embodiment has the quarter-wave plate shaping resin layer 10 omitted from the circularly polarizing plate 106, It comprises a quarter-wave plate retardation layer 8, a half-wave plate shaping resin layer 12, a half-wave plate alignment film 13, and a half-wave plate retardation layer 9.
In this connection, in this embodiment, the layer (transfer layer) used for transfer of the transfer film 120 is, as shown in FIG. 10, a quarter-wave plate retardation layer 8 and a half-wave plate. This is a laminate of the shaping resin layer 12, the half-wave plate alignment film 13, and the half-wave plate retardation layer 9.
As the support substrate 21, a PET film, which is a transparent film material, is applied, whereby the transfer film 20 is configured to be able to inspect optical characteristics. In addition, a PET film is corona-treated and sufficient adhesion is ensured between the subsequent quarter-wave plate shaping resin layer 22.

  Here, in this way, the quarter-wave plate shaping resin layer 110, the quarter-wave plate alignment film 111, the quarter-wave plate retardation layer 8, and the half-wave plate shaping resin In the transfer film 120 formed by laminating the layer 12, the alignment film 13 for half-wave plate, and the retardation layer 9 for half-wave plate, the quarter-wave plate shaping resin layer 110, 1/4 The wavelength plate alignment film 111, the half-wave plate shaping resin layer 12, and the half-wave plate alignment film 13 are the quarter-wave plate retardation layer 8 and the half-wave plate retardation, respectively. It can be said that it is a configuration for creating the layer 9, and the circularly polarizing plate 106 functions optically enough if only the quarter-wave plate retardation layer 8 and the half-wave plate retardation layer 9 are present. become.

  Therefore, in securing the optical function of the circularly polarizing plate 106, the quarter-wave plate shaping resin layer 110, the quarter-wave plate orientation film 111, the half-wave plate shaping resin layer 12, It can be said that the alignment film 13 for half-wave plates is an unnecessary layer. However, the half-wave plate shaping resin layer 12 and the half-wave plate alignment film 13 are layers that hold the quarter-wave plate retardation layer 8 and the half-wave plate retardation layer 9. It also has a function as a member.

  Accordingly, in this embodiment, as described above, the transfer layer used for transfer is a quarter-wave plate retardation layer 8, a half-wave plate shaping resin layer 12, and a half-wave plate orientation. The film 13 is set to the retardation layer 9 for a half-wave plate, and the support includes a support substrate 21, a quarter-wave plate shaping resin layer 110, and a quarter-wave plate alignment film 111. Assigned. As a result, in the structure on the support side, at the time of transfer to the linear polarizing plate 5, even part of the transfer layer is not transferred (transferred) to the linear polarizing plate 5 side together with the transfer layer. In such a case, even a part of the structure is not left behind on the support side.

  Specifically, in the quarter-wave plate shaping resin layer 110, the surface shape sufficiently functions as the quarter-wave plate alignment film 111, and the support is peeled from the transfer layer. When it does, it is comprised so that it may fully function as a mold release layer. As a result, the quarter-wave plate shaping resin layer 110 has high adhesion (low peelability) to the support substrate 21 in a state in which the quarter-wave plate alignment film 111 is formed. A material having low adhesiveness (high peelability) to the quarter-wave plate retardation layer 8 which is the lowermost layer of the layer is applied. Furthermore, a material having a sufficiently small adhesive force with respect to the quarter-wave plate retardation layer 8 as compared with the adhesive force between other layers formed on the transfer film 120 is applied.

  The quarter-wave plate shaping resin layer 110 and the quarter-wave plate retardation layer 8 satisfy these conditions from the ultraviolet curable resin used for the shaping process and the liquid crystal material used for the optical film. Materials are selected or prepared and applied to meet these conditions. Here, as in the first embodiment, the liquid crystal material to which the fluorine compound is added is added to the quarter-wave plate retardation layer 8 and the half-wave plate retardation layer 9. An ultraviolet curable resin to which a fluorine compound is added is applied to the wave plate shaping resin layer 12.

  Instead of such selection and adjustment of each material, a release layer may be separately provided on the surface of the quarter-wave plate shaping resin layer 110. As such a release layer, for example, a silicon resin (organosilicon polymer compound), a fluorine resin, a melamine resin, an epoxy resin, or an appropriate other resin (acrylic resin, cellulose resin, polyester) A mixture with a resin or the like) can be applied.

  Moreover, when the peelability by a release layer is inadequate, you may make it supplement the peelability by a release layer by providing a release layer in the support body side of a release layer. The release layer is made of a material having relatively low adhesion to the quarter-wave plate shaping resin layer 110 (high peelability) and high adhesion to the release layer (low peelability). Can be applied. More specifically, in this embodiment, the release layer includes an acrylic resin, a cellulose resin, a polyester resin, a urethane resin, a vinyl chloride-vinyl acetate copolymer, or a mixture of two or more selected from the above. Alternatively, a mixture of one or more selected from the above and other resins is used.

  As described above, in this embodiment, the same effects as those of the first embodiment described above can be obtained, and the quarter-wave plate shaping resin layer is omitted as compared with the optical film 3 of the first embodiment. The optical film 103 with a simplified layer structure and reduced thickness can be produced.

[Fourth Embodiment]
FIG. 11 is a diagram showing an image display apparatus according to the fourth embodiment of the present invention.
As shown in FIG. 11, the optical film 203 of the fourth embodiment is configured by integrating a circularly polarizing plate 206 and a linearly polarizing plate 5 via an adhesive layer 7.
The optical film 203 is peeled off a separator film (not shown) to expose the pressure-sensitive adhesive 4 with the pressure-sensitive adhesive, and is then attached and held on the panel surface of the image display panel 2 by the pressure-sensitive adhesive layer 4. Here, unlike the first embodiment, the optical film 203 of the present embodiment is not configured by a transfer body, but a circularly polarizing plate in which an optical functional layer related to a circularly polarizing plate is laminated on the upper surface of the base material 221. 206 and the linearly polarizing plate 5.
Specifically, the circularly polarizing plate 206 is formed on the upper surface of the base 221 by using the quarter-wave plate shaping resin layer 10, the quarter-wave plate alignment film 11, and the quarter-wave plate retardation layer 8. The half-wave plate shaping resin layer 12, the half-wave plate alignment film 13, and the half-wave plate retardation layer 9 are sequentially formed. Further, an adhesive layer 4 to be attached to the panel surface of the image display panel 2 is provided on the lower surface of the base material 221. The base material 221 is a transparent base material made of TAC (triacetyl cellulose) or the like.
As mentioned above, in this embodiment, the same effect as the above-mentioned 1st Embodiment can be acquired.

[Other Embodiments]
The specific configuration suitable for the implementation of the present invention has been described in detail above. However, the present invention is not limited to the scope of the present invention, and various combinations of the above-described embodiments, and further the configuration of the above-described embodiments. Can be variously changed.

(1) In each embodiment, although the transfer layer showed the example which peels off the support base material 21 (71) and affixes on the image display panel 2, it is not limited to this, The separator film 23 is peeled and an image is shown. You may make it affix on the display panel 2. FIG.
In this case, a half-wave plate shaping resin layer, a half-wave plate alignment film, a half-wave plate retardation layer, a quarter-wave plate shaping resin layer, and a quarter-wave plate It is necessary to form a transfer body in which an alignment film and a quarter-wave plate retardation layer are laminated in this order on a support substrate, and a quarter-wave plate shaping resin layer (alignment layer) is provided. Therefore, it is necessary to add a fluorine compound to the ultraviolet curable resin for forming the quarter-wave plate shaping resin layer because it is located between the half-wave plate retardation layer and the quarter-wave plate retardation layer. is there.

(2) In each embodiment, the case where the alignment film is formed by the shaping process has been described. However, the present invention is not limited to this, and the present invention can also be applied to the case where the alignment film is formed by a photo-alignment technique. In this case, it is necessary to add a fluorine compound to the photo-alignment material.

(3) In each embodiment, the adhesive layer 7 is provided on the transfer layer side, and the linear polarizing plate 5 and the transfer layer are integrated by the adhesive layer 7. However, the present invention is not limited to this. Instead, the adhesive layer 7 may be provided on the linearly polarizing plate 5 side.

(4) In each embodiment, although the case where the shaping process is performed by the roll plate has been described, the present invention is not limited to this, and can be widely applied to the case where the shaping process is performed by a flat plate.

(5) In each embodiment, although the case where arrangement | positioning of the adhesion layer 4 and a separator is arrange | positioned by the continuous process of a roll material was described, this invention is not restricted to this, After cutting out an optical film by sheet shape separately It may be arranged.

(6) In the fourth embodiment, the circularly polarizing plate 206 is formed on the upper surface of the base material 221, in order, the quarter-wave plate shaping resin layer 10, the quarter-wave plate alignment film 11, and the quarter wavelength. Although the example of the structure which formed the phase difference layer 8 for plates, the shaping resin layer 12 for 1/2 wavelength plates, the alignment film 13 for 1/2 wavelength plates, and the retardation layer 9 for 1/2 wavelength plates was shown, It is not limited to this. For example, on the lower surface of the substrate 221, the half-wave plate shaping resin layer 12, the half-wave plate alignment film 13, the half-wave plate retardation layer 9, and the quarter-wave plate are sequentially formed. You may make it the structure which formed the shaping resin layer 10, the alignment film 11 for 1/4 wavelength plates, and the phase difference layer 8 for 1/4 wavelength plates. In this case, the circularly polarizing plate needs to have the adhesive layer 7 on the upper surface of the base 221 and the adhesive layer 4 on the lower surface of the quarter-wave plate retardation layer 8.

DESCRIPTION OF SYMBOLS 1 Image display apparatus 2 Image display panels 3, 103, 203 Optical film 4, 7 Adhesive layer 5 Linearly polarizing plate 6, 106, 206 Circularly polarizing plate 8 1/2 wavelength plate phase difference layer 9 1/4 length for long plate Phase difference layer 10, 110 1/4 wavelength plate shaping resin layer 11, 111 1/4 wavelength plate alignment film 12 1/2 wavelength plate shaping resin layer 13 1/2 wavelength plate alignment film 15 Base material 16 Optical functional layer 20, 70, 120 Transfer film 21 Support base material 221 Base material 23, 42, 71 Separator film 30, 50, 60 Manufacturing process 31, 32, 33, 41, 51 Supply reel 34 Peeling rolls 36, 40, 44, 58, 68 Take-up reels 38A, 38B Pressing roller 39 Peeling rollers 43A, 43B, 54, 64 Pressure rollers 52, 58, 62, 69 Dies 53, 63 Roll plates 55, 57, 65, 67 Ultraviolet Beam irradiation device 56, 66 Peeling roller

Claims (8)

A substrate made of a transparent film;
An optical functional layer of a linearly polarizing plate that functions as a linearly polarizing plate;
The optical functional layer of the circularly polarizing plate that functions as a circularly polarizing plate is laminated along the light transmission direction,
The optical functional layer of the circularly polarizing plate provides a half-wave plate retardation layer that imparts a phase difference of ½ wavelength to the transmitted light, and 1 that imparts a phase difference of a quarter wavelength to the transmitted light. / 4 wavelength plate retardation layer, and a multilayer structure having at least an alignment layer provided between the ½ wavelength plate retardation layer and the ¼ wavelength plate retardation layer,
The half-wave plate retardation layer and the quarter-wave plate retardation layer are obtained by curing a retardation layer-forming resin.
The alignment layer is a product obtained by curing an alignment layer forming resin,
The retardation layer forming resin and the alignment layer forming resin are added with a fluorine compound,
The concentration of the fluorine compound added to the alignment layer forming resin forming the alignment layer is equal to or higher than the concentration of the fluorine compound added to the retardation layer forming resin forming the half-wave plate retardation layer. Yes,
The concentration of the fluorine compound added to the alignment layer forming resin that forms the alignment layer is equal to or less than the concentration of the fluorine compound added to the retardation layer forming resin that forms the retardation layer for the quarter-wave plate. Oh it is,
The alignment layer forming resin that forms the alignment layer, the retardation layer forming resin that forms the retardation layer for half-wave plate, and the retardation that forms the retardation layer for quarter-wave plate With the layer forming resin, the concentration of the fluorine compound to be added is 0.3% or less,
An optical film characterized by The fluorine compound added to the retardation layer forming resin and the alignment layer forming resin is the same compound;
The optical film according to claim 1. A half-wave plate retardation layer that imparts a phase difference of ½ wavelength to transmitted light, and a quarter-wave plate retardation layer that imparts a phase difference of ¼ wavelength to transmitted light, A transfer layer having a multilayer structure in which the retardation layer for the half-wave plate and the alignment layer provided between the retardation layers for the quarter-wave plate are laminated along the light transmission direction;
A support for holding the transfer layer,
The half-wave plate retardation layer and the quarter-wave plate retardation layer are obtained by curing a retardation layer-forming resin.
The alignment layer is a product obtained by curing an alignment layer forming resin,
The retardation layer forming resin and the alignment layer forming resin are added with a fluorine compound,
The concentration of the fluorine compound added to the alignment layer forming resin forming the alignment layer is equal to or higher than the concentration of the fluorine compound added to the retardation layer forming resin forming the half-wave plate retardation layer. Yes,
The concentration of the fluorine compound added to the alignment layer forming resin that forms the alignment layer is equal to or less than the concentration of the fluorine compound added to the retardation layer forming resin that forms the retardation layer for the quarter-wave plate. Oh it is,
The alignment layer forming resin that forms the alignment layer, the retardation layer forming resin that forms the retardation layer for half-wave plate, and the retardation that forms the retardation layer for quarter-wave plate With the layer forming resin, the concentration of the fluorine compound to be added is 0.3% or less,
An optical film transfer body characterized by the above. The fluorine compound added to the retardation layer forming resin and the alignment layer forming resin is the same compound;
The transfer member for an optical film according to claim 3. The support is a separator film;
The transfer layer comprises an adhesive layer covered by the support;
The transfer body for optical films according to claim 3 or 4, wherein A substrate made of a transparent film;
An optical functional layer of a linearly polarizing plate that functions as a linearly polarizing plate;
The optical functional layer of the circularly polarizing plate that functions as a circularly polarizing plate is laminated,
The optical functional layer of the circularly polarizing plate is the transfer layer provided on the optical film transfer body according to claim 3 or 4 on the optical functional layer of the linearly polarizing plate,
An optical film characterized by Arranging the optical film according to any one of claims 1, 2 and 6,
An image display device characterized by the above. A half-wave plate retardation layer that imparts a phase difference of ½ wavelength to transmitted light, and a quarter-wave plate retardation layer that imparts a phase difference of ¼ wavelength to transmitted light, A transfer layer having a multilayer structure in which an alignment layer provided between the retardation layer for a half-wave plate and the retardation layer for a quarter-wave plate is laminated along a light transmission direction; A process for producing a transfer body formed on a support to be held;
On the transparent substrate, a linear polarizing plate manufacturing process for forming an optical functional layer of a linear polarizing plate that functions as a linear polarizing plate,
A transfer step of transferring the transfer layer on the support produced in the transfer step to the optical functional layer of the linearly polarizing plate;
In the manufacturing process of the transfer body, the retardation layer for a half-wave plate and the retardation layer for a quarter-wave plate are formed by curing a retardation layer-forming resin to which a fluorine compound is added, The alignment layer is formed by curing an alignment layer forming resin to which a fluorine compound is added,
The concentration of the fluorine compound added to the alignment layer forming resin forming the alignment layer is equal to or higher than the concentration of the fluorine compound added to the retardation layer forming resin forming the half-wave plate retardation layer. Yes,
The concentration of the fluorine compound added to the alignment layer forming resin that forms the alignment layer is equal to or less than the concentration of the fluorine compound added to the retardation layer forming resin that forms the retardation layer for the quarter-wave plate. Oh it is,
The alignment layer forming resin that forms the alignment layer, the retardation layer forming resin that forms the retardation layer for half-wave plate, and the retardation that forms the retardation layer for quarter-wave plate With the layer forming resin, the concentration of the fluorine compound to be added is 0.3% or less,
A method for producing an optical film.