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Method for manufacturing image display

A technology of an image display device and a manufacturing method, which is applied in the directions of identification devices, nonlinear optics, optics, etc., can solve the problems of uncured, insufficient light reaching, etc., and achieve the effect of preventing orientation disorder

Active Publication Date: 2010-02-17
DEXERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in this structure, when the space 105 between the liquid crystal display panel 102 and the protective portion 103 is filled with a photocurable resin composition and then photocured, the photocurable resin composition in the formation region of the light shielding portion will be damaged by light. Not sufficiently reached and possibly uncured

Method used

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  • Method for manufacturing image display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0094] Hereinafter, the present invention will be specifically described with reference to experimental examples, but the present invention is not limited to the following examples.

[0095] The following resin compositions a to h were prepared.

[0096] Resin composition a

[0097] Mix 50 parts by weight of urethane acrylate (trade name UV-3000B, manufactured by Nippon Synthetic Chemical Industry Co., Ltd.), 30 parts by weight of isobornyl acrylate (trade name IBXA, manufactured by Osaka Organic Chemical Industry Co., Ltd.), Organic peroxide (trade name PERBUYL O, manufactured by NOF Corporation) 5 parts by weight, photopolymerization initiator (trade name IRGACURE 184, manufactured by Ciba Specialty Chemicals Co., Ltd.) 3 parts by weight, and photopolymerization initiator ( Resin composition a was prepared in 1 part by weight of SpeedCure TPO (trade name, manufactured by Nihon Siber Hegner K.K.).

[0098] Resin composition b

[0099] Without adding organic peroxides, uret...

experiment example 1-1

[0112] Experimental Example 1-1 [Curing Rate of Resin Composition]

[0113] Make resin composition a and resin composition b respectively to such as figure 1 0.2 g of the spacer inside the liquid crystal display substrate shown in (a) was dropped, and an acrylic plate having a light-shielding portion with a width of 2.0 mm as a protective part was placed on the spacer, and then, under the following curing conditions A to In D, the resin compositions were respectively photocured, and as shown in Table 1, a liquid crystal display device was fabricated.

[0114] Then, the obtained acrylic plate of the liquid crystal display device was peeled off, and the curing rates of the cured products of the respective resin compositions a and b were measured as described below. Record the results in Table 1.

[0115] Curing condition A:

[0116] Using a UV lamp (manufactured by USHIO Electric Co., Ltd.), ultraviolet rays with a cumulative light intensity of 5000 mJ were irradiated from a...

experiment example 1-2

[0128] Except for using an acrylic plate having a light-shielding portion with a width of 5.0 mm as the protective portion, a liquid crystal display device was fabricated using the resin compositions a and b in the same manner as in Experimental Example 1-1, and the curing conditions were changed, and the obtained liquid crystal display device was measured. The curing rate of the cured resin in. Record the results in Table 2.

[0129] [Table 1]

[0130] Experimental example 1-1 (shading part 2mm)

[0131]

[0132] Curing condition A: UV rays are irradiated from only one side of the acrylic sheet

[0133] Curing condition B: UV rays are irradiated from the side of the acrylic sheet and heated with a heater

[0134] Curing condition C: UV rays are irradiated from one side of the acrylic sheet and UV rays are irradiated from the side side

[0135] Curing condition D: UV radiation is irradiated from an acrylic plate, heated by a heating table, and UV radiation is irradiated...

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Abstract

Disclosed is a method for manufacturing an image display (1), which comprises a step wherein a photocurable resin composition (11) is interposed between a base unit (2) having an image display unit such as a liquid crystal display panel (8) and a light-transmitting protective unit (3) having a light-shielding portion (5), and a cured resin layer (15) is formed by photocuring the resin composition(11). In this method, a resin composition having a curing shrinkage rate of not more than 5% and a storage modulus of the cured product at 25 DEG C of not more than 1.0 OE10<7> Pa, which enables to obtain a cured resin layer (15) having a visible light transmittance of not less than 90% is used as the photocurable resin composition (11). The method further comprises a step wherein a curable resincomposition (11a) containing a thermal polymerization initiator is interposed at least between the light-shielding portion (5) and the base unit (2) and then the curable resin composition (11a) is heated. Consequently, the resin in a forming-region of the light-shielding portion (5) is sufficiently cured, while attaining a high-luminance, high-contrast display without having display defects due todeformation of the image display unit (8), during manufacture of the thin image display (1) wherein the resin is interposed between the protective unit (3) having the light-shielding portion (5) andthe image display unit (8).

Description

technical field [0001] The present invention relates to a method of manufacturing an image display device such as a liquid crystal display (LCD) used in a mobile phone, and more particularly to a method of manufacturing an image display device in which a transparent protective portion is provided on the image display portion. Background technique [0002] Conventionally, as such an image display device, well-known such as Figure 7 A liquid crystal display device 101 is shown. This liquid crystal display device 101 has a transparent protective portion 103 made of, for example, glass or plastic on a liquid crystal display panel 102 . [0003] At this time, in order to protect the surface of the liquid crystal display panel 102 and the polarizer (not shown), a space 105 is provided between the liquid crystal display panel 102 and the protective portion 103 by interposing a spacer 104 therebetween. [0004] However, light is scattered due to the gap 105 between the liquid crys...

Claims

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Application Information

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IPC IPC(8): G09F9/00G02F1/1333G02F1/1335
Inventor 镰田勇介新家由久
Owner DEXERIALS CORP
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