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Method for producing optical member and curable resin composition used therein

A curable resin and manufacturing method technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as discharge, yield drop, substrate deformation, etc.

Inactive Publication Date: 2017-04-19
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the case of manufacturing an image display device by forming an image display device by forming the peripheral wall portion in a rectangular shape so that the flow blocking portion completely separates the adhesive filled area from the external area as described in Patent Documents 1 and 2, there are the following problems: When the adhesive is cured to form a cured product layer, inner surface stress is generated due to shrinkage of the adhesive due to curing, and deformation of the substrate occurs due to this inner surface stress; there is no passage to discharge the voids generated during bonding to the outer area, so Void remains and needs to be repaired
[0006] Therefore, under the above circumstances, it is desired to develop an image display device and a method of manufacturing the same, which can relax the stress even if the internal surface stress is generated due to the curing shrinkage of the adhesive, and can expect the gap caused by the presence of voids at the time of bonding. drop in yield

Method used

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  • Method for producing optical member and curable resin composition used therein
  • Method for producing optical member and curable resin composition used therein
  • Method for producing optical member and curable resin composition used therein

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0057] figure 1 It is a process drawing which shows 1st Embodiment of the manufacturing process of the optical member of this invention.

[0058] This method is a method of obtaining an optical member (image display device) by bonding the liquid crystal display unit 1 and the protective plate 2 together.

[0059] The liquid crystal display unit 1 is a liquid crystal display unit in which a liquid crystal material is sealed between a pair of substrates on which electrodes are formed, and includes a polarizing plate, a driving circuit, a signal input cable, and a backlight unit.

[0060] figure 2 It is a cross-sectional view showing a main part of an example of the liquid crystal display unit 1 . Such as figure 2 As shown, the liquid crystal display unit 1 is configured as follows: a polarizing plate 22 is disposed on a liquid crystal display cell 21 , and a sealing body 23 is disposed on the liquid crystal display cell 21 so as to surround the polarizing plate 22 . Here, ...

no. 2 approach

[0165] The optical member of the present invention can also be produced by the second embodiment modified as follows from the first embodiment.

[0166] [Process A]

[0167] First, if Figure 5 As shown in (a), the 2nd curable resin composition 12 containing a (meth)acrylate (A) and a photoinitiator (B) is apply|coated on the surface on the guard plate 2 in which the light shielding part 4 was formed.

[0168] Here, like the first embodiment, in the present invention, the second cured material layer 14 is laminated between the liquid crystal display unit 1 and the protective plate 2 in the form of a linearly extending layer or a dot-like scattered layer, thereby forming In order to separate the inner area and the outer area of ​​the filling chamber 17 filled with the first curable resin composition, at least a part of the partition wall is provided with a communicating portion connecting the inner area and the outer area of ​​the filling chamber. Additionally, if Figure 4 ...

no. 3 approach

[0182] The optical member of the present invention can also be produced by the third embodiment modified as follows on the basis of the first embodiment and the second embodiment.

[0183] [Process A]

[0184] First, if Figure 6 As shown in (a), the second curable resin composition 12 containing (meth)acrylate (A) and photopolymerization initiator (B) is coated on the display surface of the liquid crystal display unit 1 and the protective plate 2. On the surface of the face of the light shielding part 4 .

[0185] Here, like the first embodiment, in the present invention, the second cured material layer 14 is laminated between the liquid crystal display unit 1 and the protective plate 2 in the form of a linearly extending layer or a dot-like scattered layer, thereby forming In order to separate the inner area and the outer area of ​​the filling chamber 17 filled with the first curable resin composition, at least a part of the partition wall is provided with a communicating ...

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Abstract

Provided is a method for producing an image display device that is an optical member having excellent productivity and being not susceptible to warping of a substrate, wherein: a second curable resin composition, which exhibits fluidity in an uncured state, is applied to a liquid crystal display unit and / or a protective plate; cured product layers obtained by curing the composition are laminated in the form of lines or dots between the liquid crystal display unit and the protective plate, thereby forming a partition wall between a region that is filled with a first curable resin composition and a region that is not filled with the first curable resin composition; and the partition wall is at least partially provided with a communication part between the two regions. Also provided is a curable resin composition which is used in the method for producing an image display device.

Description

technical field [0001] This invention relates to the method of manufacturing an optical member by bonding the optical base material which has a light-shielding part, and another optical base material, and curable resin composition used for this method. Background technique [0002] In recent years, display devices in which a touch panel is bonded to a display screen of a display device such as a liquid crystal display, a plasma display, or an organic electroluminescent (EL) display to enable screen input have been widely used. This touch panel has a structure in which a glass plate or a resin film formed with a transparent electrode is bonded facing each other with a small gap, and a transparent protective plate made of glass or resin is bonded to the touch surface as necessary. [0003] There is a technology of using a double-sided adhesive sheet for bonding a glass plate or film on which a transparent electrode is formed in a touch panel and a transparent protective plate ...

Claims

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Application Information

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IPC IPC(8): G02F1/1333C08F290/00G09F9/00
CPCC08F290/00G02F1/1333G09F9/00C08F2/50C08F220/1802
Inventor 水口贵文本桥隼
Owner NIPPON KAYAKU CO LTD
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