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Method for producing image display device, curable resin composition used in the method, touch panel, and image display device

A technology of image display device and curable resin, which can be applied to non-polymer organic compound adhesive, identification device, bonding method, etc., and can solve the problems of visibility, liquid crystal cell gap change, and ripples.

Active Publication Date: 2021-03-30
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 producing an image display device by the above-mentioned method, after forming the cured product layer, if the weir portion of the cured ultraviolet curable resin is pressed with a finger or the like, force may be locally applied to the pressed portion, resulting in The gap of the liquid crystal cell changes, which causes ripples, causing problems in visibility when pressing

Method used

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  • Method for producing image display device, curable resin composition used in the method, touch panel, and image display device
  • Method for producing image display device, curable resin composition used in the method, touch panel, and image display device
  • Method for producing image display device, curable resin composition used in the method, touch panel, and image display device

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Experimental program
Comparison scheme
Effect test

no. 1 approach

[0057] figure 1 It is a process diagram which shows 1st Embodiment of the manufacturing process of the image display apparatus (it is also called "optical member") of this invention.

[0058] This method is a method of obtaining an optical member 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 including a polarizing plate, a driving circuit, a signal input cable, and a backlight unit on a member in which a liquid crystal material is sealed between a pair of substrates on which electrodes are formed.

[0060] figure 2 It is a cross-sectional view showing a main part of an example of the liquid crystal display unit 1 . like figure 2 As shown, the liquid crystal display unit 1 has a configuration in which a polarizing plate 22 is arranged on a liquid crystal display cell 21 , and a sealing body 23 is arranged on the liquid crystal display cell 21 so as to surround th...

no. 2 approach

[0150] Figure 4 It is a process chart which shows 2nd Embodiment of the manufacturing process of the optical member of this invention.

[0151] 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. It should be noted that, for the parts other than the changed parts compared with the first embodiment, the matters described in each of the above-mentioned first embodiment can be reflected and incorporated, and a part of descriptions that duplicate the descriptions are omitted.

[0152] [Process A]

[0153] First, as Figure 4 As shown in (a), a first curable resin composition 11 containing a (meth)acrylate (A) and a photopolymerization initiator (B), which will be described later, is applied to the protective plate 2 having the light-shielding portion 4 formed thereon. on the surface of the surface of the light shielding portion 4 . As a coating method, a slit coater, a ...

no. 3 approach

[0178] Figure 5 It is a process chart which shows 3rd Embodiment of the manufacturing process of the optical member of this invention.

[0179] 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. It should be noted that, for the parts other than the changed parts compared with the first embodiment, the matters described in each of the above-mentioned first embodiment can be reflected and incorporated, and a part of descriptions that duplicate the descriptions are omitted.

[0180] [Process A]

[0181] First, as Figure 5 As shown in (a), a first curable resin composition 11 containing a (meth)acrylate (A) and a photopolymerization initiator (B), which will be described later, is applied to the protective plate 2 having the light-shielding portion 4 formed thereon. on the surface of the surface of the light shielding portion 4 . As a coating method, a slit coater, a ...

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Abstract

A method for producing an image display device having a protective plate adhered to a liquid crystal display unit equipped with a liquid crystal display cell, a polarizing plate, and a sealed body or a housing, the method involving: (A) a step for coating the liquid crystal display unit or the protective plate with a first curable resin composition; (B) a step for sticking the liquid crystal display unit and the protective plate to one another with the first curable resin composition interposed therebetween; and (C-I)-(C-III) the subsequently described steps which follow step (B). (C-I) a step for adhering the liquid crystal display unit and the protective plate to one another by curing the first curable resin composition; (C-II) a step for coating the outer-peripheral-side surface section of the protective plate, the sealed body or the housing with a second curable resin composition, so as to connect the liquid crystal display unit and the protective plate with one another; and (C-III) a step for, after step (C-II), providing the outer-peripheral side surface section of the protective plate, the sealed body or the liquid crystal display unit housing with a cured-article layer by curing the second curable resin composition.

Description

technical field [0001] The present invention relates to a method for producing an image display device by laminating an optical substrate having a light-shielding portion and another optical substrate to produce an image display device, a curable resin composition used for the method, a touch panel, and an image display device. Background technique [0002] In recent years, display devices capable of screen input by bonding touch panels to display screens of display devices such as liquid crystal displays, plasma displays, and organic electroluminescence (EL) displays have been widely used. This touch panel has a structure in which glass plates or resin films formed with transparent electrodes are bonded to 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 technique of using a double-sided adhesive sheet for bonding a glass plate or film on which a transparent electrode is f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333C08F2/50C09J4/02C09J5/00C09J109/00C09J175/16G09F9/00
CPCC08F2/50C09J5/00C09J109/00C09J175/16G02F1/1333G09F9/00C08F20/18C09J2203/318C09J2301/312C09J2301/416G06F3/041
Inventor 水口贵文德田清久本桥隼
Owner NIPPON KAYAKU CO LTD
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