JP5490374B2 - Lamination stage, laminating apparatus and laminating method - Google Patents

Description

  The present invention relates to a lamination stage, and more particularly to a lamination stage of a large-sized organic light emitting display and a lamination apparatus.

  In recent years, organic light-emitting displays (OLEDs) have been developed to a large scale, from the 3.5th generation substrate scale of 375 * 620mm to the 3.5th, 4, 4.5, 5, 6th generation, The substrate dimensions are 620 * 750, 680 * 880, 730 * 920, 1100 * 1300, and 1500 * 1800 mm, respectively.

  The organic light emitting display stacking technology uses the upper and lower stacking stages of the stacking device, respectively, fixing the upper and lower substrates of the display, then aiming the upper and lower substrates and then stacking the packages. FIG. 1 is a cross-sectional view of a known laminating apparatus for an organic light emitting display 30. The stacking apparatus includes an upper stacking stage 16, a lower stacking stage 10, a frame 12 beside the stacking stage, and an O-shaped ring 14 on the frame. The upper substrate 20 and the lower substrate 18 of the organic light emitting display are fixed on the upper and lower lamination stages 16 and 10 respectively, and after aiming, the packages are laminated by the package gel 22. The portion 24 between the upper and lower substrates includes a light emitting layer, an electrode layer, and other elements in the organic light emitting display.

  The structure of the known lamination stage is an independent stage as shown in FIG. 1, and the lower lamination stage material is usually quartz, which is applied to the 3.5th generation substrate size lamination. When the scale of organic light emitting display is developed to a large scale after the 3.5th generation, the bending phenomenon of the upper and lower substrates and the problem of unevenness become serious, and the laminating process is performed by a known laminating stage. The resulting laminate quality is unstable and thus the reliability of the resulting organic light emitting display is low.

  Accordingly, there is a need to provide a new stacked stage structure that improves the problem of substrate bending and unevenness of a large-sized organic light emitting display, achieves stable stacking quality, and improves the reliability of the organic light emitting display.

  It is an object of the present invention to improve the reliability of an organic light emitting display by utilizing the structural design of a stacked stage, stabilizing the lamination processing quality of a large-sized organic light emitting display of 3.5th generation or more.

  In order to achieve the above-described object, the present invention provides a lamination stage applied to the lamination of an organic light emitting display. This structure consists of an independent stage having a laminated surface in contact with the substrate of the organic light emitting diode, and the laminated surface has a plurality of concave tanks.

  In addition, the present invention provides a multi-layer stage applied to an organic light-emitting display, and includes a plurality of sub-stages having a multi-layer surface in contact with a substrate of the organic light-emitting display at an interval.

  In addition, the present invention provides a laminating apparatus applied to laminating organic light emitting displays. The apparatus includes a first stage, a first frame installed outside the first stage, a first O-shaped ring installed on the first frame, and a second stage installed facing the first stage. And a second frame installed outside the second stage, and a second O-type ring installed on the second frame, and at least one of the first and second stages is the above-described laminated stage And the lamination surface of a 1st stage is the lamination surface direction of a 2nd stage.

  The present invention further provides a method for laminating an organic light emitting display, the step of installing the first substrate of the organic light emitting display on the first stage, and the step of installing the second substrate of the organic light emitting display on the second stage. And a step of applying the package material to the first substrate or the peripheral region of the second substrate, and a step of laminating the first substrate and the second substrate to complete the lamination of the organic light emitting display. . At least one of the first and second stages is the above-described lamination stage, and the altitudes of the first stage and the second stage are adjusted according to the uneven portions of the first substrate and the second substrate.

  In order to overcome the problems of substrate bending and unevenness of a large-scale organic light emitting display, the stacked stage structure design of the present invention has a plurality of recessed tanks on a stacked surface of independent stages, or a plurality of Consists of sub-stages. These recessed tanks or substages are separated from each other at equal intervals or at non-equal intervals, and the laminated stage structure is adjusted in a large-sized substrate bending and uneven areas, and each substage. By adjusting the altitude, it is possible to achieve stable lamination quality and improve the reliability of the organic light emitting display, and at the same time, it can be applied to the organic light emitting display of the upper light emitting type and the lower light emitting type.

  FIG. 2A is a cross-sectional view of a lamination stage according to an embodiment of the present invention, which is an upper lamination stage and / or a lower lamination stage of a lamination apparatus. The lamination stage 160 has a lamination surface 161 and is a substrate of an organic light emitting display. And has a plurality of concave tanks 162 on the laminated surface 161, and the position can be adjusted corresponding to a non-flat portion of the substrate. In the cross-sectional view of FIG. 3A, only three concave tanks are shown, but the number of concave tanks can be adjusted according to the state of the substrate, as will be appreciated by those skilled in the art. The width a of the concave tank 162 is 50 to 1/2 of the stage thickness c. The depth b of the concave tank 162 is adjusted by the stage mechanical device. In one embodiment, the concave tank 162 has a width “a” of about 1 to 50 millimeters and a depth of about 1 millimeter to penetrate the stage. In addition, the interval between the concave tanks 162 in FIG. 2A is homologous or heterologous.

  FIG. 2B is a plan view of the stage of FIG. 2A. There are five concave tanks 162 on the stage 160, and these concave tanks are distributed at equal intervals d1 or non-equal intervals on the long side and / or short side of the stage. The arrangement method of the concave tank is vertical, parallel, or a combination of the above, and the lengths d and e of the concave tank straddle the long side or the short side of the stage. Although five recessed tanks are shown in FIG. 2B, the number of recessed tanks can be adjusted according to the state of the substrate, as will be appreciated by those skilled in the art.

  FIG. 2C is another plan view of the stage of FIG. 2A. There are six concave tanks 162 on the stage 160, and these concave tanks are distributed at equal intervals d1 or non-equal intervals on the long side and / or short side of the stage. The length f of the concave tank is substantially the same as the width a of the concave tank. Although six concave tanks are shown in FIG. 2C, the number of concave tanks can be adjusted according to the state of the substrate, as will be appreciated by those skilled in the art.

  3A is a cross-sectional view of a stacking stage according to another embodiment of the present invention, which is an upper stacking stage and / or a lower stacking stage of a processing apparatus, and the stacking stage 160 includes a plurality of substages 164. These substages are separated from each other at equal intervals d2 or non-equal intervals. In one embodiment, the distance between the substages is between about 1-100 millimeters. At least one width g of each sub-stage is homologous, and the sub-stage has a stacking stage 161 that contacts the substrate of the organic light emitting display.

  The arrangement method of these substages may be parallel or an array may be formed. FIG. 3B is a plan view of the stacking stage of FIG. 3A, where the areas of the sub-stages 164 are nearly homogenous and the arrangement forms an array. In addition, FIG. 3C is another plan view of the stacking apparatus of FIG. 3A, in which the areas of the substages 164 are different and the arrangement method is parallel.

  The height h of each of the sub-stages 164 may be homologous or different, and the altitude difference range between the sub-stages 164 is between -20 and +20 millimeters, and the altitude difference between the sub-stages is utilized. Bending large scale substrates and adjusting to non-flat locations, stable, achieve optimal stacking quality and improve display reliability.

  4A is a cross-sectional view of a stacking stage according to another embodiment of the present invention, which is an upper stacking stage and / or a lower stacking stage of the stacking apparatus. The stacking stage 160 includes a plurality of substages 166, These substages are separated from each other at equal intervals d2 or non-equal intervals. In one embodiment, the distance between the substages is between about 1-100 millimeters. At least one width g1 and g2 of each sub-stage is different, the width g1 of the sub-stage 168 is larger than the width g2 of the sub-stage 166, and the sub-stage has a stacked stage 161 that contacts the substrate of the organic light emitting display.

  The arrangement method of these substages may be parallel or an array may be formed. FIG. 4B is a plan view of the stacked stage of FIG. 4A, where the substages 166, 168 have different areas, and the arrangement forms an array. In addition, FIG. 4C is another plan view of the stacking apparatus of FIG. 4A. Similarly, the areas of the substages 166 and 168 are different, and the arrangement method is parallel.

  The height h of each of the above-mentioned substages 166 and 168 may be homologous or different, and the altitude difference range between each of the substages 166 and 168 is between -20 and +20 millimeters, and the altitude difference between each of the substages. Is used to bend the large-sized substrate and adjust it according to the non-flat part, to achieve stable and optimum lamination quality, and to improve the reliability of the display.

  The upper and lower stacking stages of the stacking apparatus of the present invention can arbitrarily combine the various stacking stage structures described above, and the structures of the upper and lower stacking stages may be homologous or heterologous. FIG. 5A is a cross-sectional view of an embodiment of the stacking apparatus of the present invention. The stacking stage structure of FIG. 2A is the upper stacking stage 170 and is placed opposite to the stacking stage of FIG. The lamination surface 161 of the lamination stage of FIG. 2A faces the lamination surface 161 of the lamination stage of FIG. 4A. In addition, the laminating apparatus further includes a frame 120 installed outside the upper and lower laminating stages, and an O-shaped ring 140 installed on the frame. In addition, the substrate is fixed by an element installed on the upper and lower lamination stages in the lamination apparatus. Elements for fixing the substrate are a vacuum chuck, a mechanical chuck, an electrostatic chuck, and a physical sticky chuck. The material of the upper and lower lamination stages of the lamination apparatus of the present invention is quartz, stainless steel, or aluminum.

  5A, an organic light emitting display 300 is shown and includes an upper substrate 200, a lower substrate 180, a package gel 220, and a light emitting layer between the upper and lower substrates, an electrode layer, and other element portions 240. . The upper and lower substrates are large glass substrates, color filter substrates, or protective layers of 3.5th generation or higher.

  FIG. 5B is a cross-sectional view of another embodiment of the stacking apparatus of the present invention. The difference from FIG. 5A is that the stacking stage of FIG. 3A is an upper stacking stage 170 and a lower stacking stage 190, and the stacking stage of FIG. Since the surface 161 faces the stacking surface 161 of the other stacking stage, the structure in the other stacking apparatus is similar to that shown in FIG. 5A.

  In the present invention, a laminating process is performed on a large-sized organic light emitting display by the above laminating apparatus, and this laminating method is performed by placing an upper substrate 200 of an organic light emitting display on an upper laminating stage 170 of the laminating apparatus. The lower substrate 180 of the display is placed on the lower lamination stage 190 of the laminating apparatus, and the upper and lower substrates are fixed to the laminating stage by an element that fixes the substrate in the laminating apparatus. The size of the upper and lower substrates is larger than that of the upper and lower lamination stages. Subsequently, the package material is applied to the peripheral region of the upper substrate or the lower substrate, and then laminated with the upper and lower substrates facing each other to complete the lamination of the organic light emitting display.

  Compared with the known laminating apparatus, the feature of the present invention is that the height of the upper and lower laminating stage is adjusted by the bending of the upper and lower substrates and the non-flat part, and the upper light emitting type of the 3.5th generation or larger size or lower Applicable to the stacking of light-emitting organic light-emitting displays, obtaining the optimal and stable stacking quality and improving the reliability of organic light-emitting displays.

  In the present invention, preferred embodiments have been disclosed as described above. However, the present invention is not limited to the present invention, and any person who is familiar with the technology can use various methods within the spirit and scope of the present invention. Variations and moist colors can be added, so the protection scope of the present invention is based on what is specified in the claims.

1 is a cross-sectional view of a known laminating apparatus including an organic light emitting display. It is sectional drawing of the lamination | stacking stage by the Example of this invention. It is a top view of the lamination | stacking stage of FIG. 2A. It is another top view of the lamination | stacking stage of FIG. 2A. FIG. 5 is a cross-sectional view of a lamination stage according to another embodiment of the present invention. It is a top view of the lamination | stacking stage of FIG. 3A. It is another top view of the lamination | stacking stage of FIG. 3A. It is sectional drawing of the lamination | stacking stage of another Example of this invention. It is a top view of the lamination | stacking stage of FIG. 4A. It is another top view of the lamination | stacking stage of FIG. 4A. 1 is a cross-sectional view of a laminating apparatus including an organic light emitting display according to an embodiment of the present invention. FIG. 4 is a cross-sectional view including an organic light emitting display in a lamination apparatus according to another embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 16 ... Known lamination | stacking stage 12, 120 ... Frame 14, 140 ... O-shaped ring 18, 180 ... Lower substrate 20, 200 ... Upper substrate 22, 220 ... Package gel 24, 240 ... Part 30 between upper and lower substrates, DESCRIPTION OF SYMBOLS 300 ... Organic light-emitting display 160 ... Laminating stage 161 of this invention ... Laminating surface 162 of a laminating stage ... Recessed tank 164, 166, 168 ... Sub stage 170 ... Upper laminating stage 190 ... Lower laminating stage

Claims (6)

A laminating apparatus for laminating organic light emitting displays,
It comprises an independent stage having a laminated surface in contact with the substrate of the organic light emitting display, and has a plurality of concave tanks on the laminated surface, wherein the plurality of concave tanks are long sides of the independent stages, and / or A first stage distributed at short intervals, equally spaced or non-equally spaced;
A first frame installed outside the first stage;
A first O-shaped ring installed on the first frame;
A second stage comprising a plurality of sub-stages disposed opposite to the first stage and having a laminated surface that is separated by an interval and contacts a substrate of the organic light emitting display;
A second frame installed outside the second stage;
A second O-shaped ring installed on the second frame,
The laminating apparatus, wherein the laminating surface of the first stage faces the laminating surface of the second stage.   The stacking apparatus according to claim 1, wherein the altitudes of the first and second stages can be adjusted.   The laminating apparatus according to claim 1 or 2, wherein the material of the first and second stages is quartz, stainless steel, or aluminum.   The stacking apparatus according to any one of claims 1 to 3, wherein an interval between each of the plurality of sub-stages is homologous or heterologous.   The stacking apparatus according to any one of claims 1 to 4, wherein a difference in height of each of the plurality of sub-stages is in a range of -20 to +20 millimeters. A method for laminating an organic light emitting display using the laminating apparatus according to any one of claims 1 to 5 ,
Installing the first substrate of the organic light emitting display on the first stage of the laminating device ; installing the second substrate of the organic light emitting display on the second stage of the laminating device ;
Applying a package material to the first substrate or a peripheral region of the second substrate; and laminating the first substrate and the second substrate to face each other to complete the lamination of the organic light emitting display; ,
A laminating method comprising: