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Image display device manufacturing method, hardening resin composition used therein, and image display device

An image display device and curable resin technology, applied in nonlinear optics, optics, instruments, etc., can solve problems such as visibility problems, liquid crystal cell gap changes, and ripples

Inactive Publication Date: 2017-05-10
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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  • Image display device manufacturing method, hardening resin composition used therein, and image display device
  • Image display device manufacturing method, hardening resin composition used therein, and image display device
  • Image display device manufacturing method, hardening resin composition used therein, and image display device

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Experimental program
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Effect test

no. 1 approach

[0056] figure 1 It is a process drawing which shows 1st Embodiment of the manufacturing process of the optical member of this invention.

[0057] 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.

[0058] 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.

[0059] 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, this liquid crystal display unit 1 has a configuration in which 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 . He...

no. 2 approach

[0155] The optical member of the present invention can also be produced by the second embodiment modified as follows from the first embodiment.

[0156] [Process A]

[0157] 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.

[0158] [Process B]

[0159] Then, if Figure 5 As shown in (b), the first curable resin composition 11 is coated on the surface of the protective plate 2 on which the light-shielding portion 4 is formed, and then the obtained coating film is irradiated with ultraviolet rays 5 to obtain The cured product layer exists in the cured portion on the lower side of the layer (the transparent substrate side viewed from the curable resin composition) and the uncured portion on the upper side of the coating layer (opposite to the transparent substrate side).

[0160] At this time, when ...

no. 3 approach

[0168] 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.

[0169] [Process A]

[0170] First, if Image 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 .

[0171] [Process B]

[0172] Then, if Image 6 As shown in (b), the first curable resin composition 11 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 .

[0173] The obtained coating film was irradiated with ultraviolet rays 5 to obtain a cured portion existing on the lower side of the coating film...

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Abstract

Provided are an image display device manufacturing method capable of obtaining an optical member with excellent visibility without causing a ripple even if any portion is pressed, a hardening resin composition used therein, and an image display device. An image display device manufacturing method comprises: a step for demarcating an application region of a first hardening resin composition by a second hardening resin composition; a step for applying the first hardening resin composition to the application region; and a step for hardening the first hardening resin composition to bond a liquid crystal display unit and a protection plate, and a hardened material layer obtained by hardening the second hardening resin composition is laminated on a projection region of a sealing body and is not laminated on a projection region of a polarizing plate. It is preferable that the first hardening resin composition or the second hardening resin composition contain (meth)acrylate (A) and a photopolymerization initiator (B).

Description

technical field [0001] The present invention relates to a method for producing an image display device (hereinafter also referred to as an optical member) by bonding an optical base material having a light-shielding portion and another optical base material, and a curable resin composition used for the 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 ...

Claims

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Application Information

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IPC IPC(8): G02F1/1333C08F2/50G02F1/1335
CPCC08F2/50G02F1/1333G02F1/1335
Inventor 水口贵文本桥隼
Owner NIPPON KAYAKU CO LTD
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