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 an

Method used

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  • Method for manufacturing image display
  • Method for manufacturing image display

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0093] Example

[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] In a mixer, 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 Seika Co., Ltd.) 3 parts by weight, and photopolymerization initiator ( Trade name SpeedCure TPO, manufactured by Nihon SiberHegner K.K.) 1 weight part, and the resin composition a was prepared.

[0098] resin composition b

[0099] Without adding organic perox...

Example Embodiment

[0112] Experimental example 1-1 [curing rate of resin composition]

[0113] The resin composition a and the resin composition b are respectively directed to such as figure 1 0.2 g was dropped from the spacer inner region on the liquid crystal display substrate shown in (a), an acrylic plate having a light-shielding portion with a width of 2.0 mm as a protective portion was placed on the spacer, and then, the following curing conditions A to In D, each resin composition was photocured, and as shown in Table 1, a liquid crystal display device was produced.

[0114] Then, the acrylic plate of the obtained liquid crystal display device was peeled off, and the hardening rate of each resin composition a and the hardened|cured material of b was measured as follows. The results are recorded in Table 1.

[0115] Curing Condition A:

[0116] Using a UV lamp (manufactured by USHIO Denki Co., Ltd.), ultraviolet rays with a cumulative light intensity of 5,000 mJ were irradiated from a ...

Example Embodiment

[0127] Experimental Example 1-2

[0128] The resin compositions a and b were used in the same manner as in Experimental Example 1-1, except that an acrylic plate having a light-shielding portion with a width of 5.0 mm was used as a protective portion, a liquid crystal display device was produced by changing curing conditions, and the obtained liquid crystal display device was measured. The curing rate of the resin cured product in . The results are recorded in Table 2.

[0129] [Table 1]

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

[0131]

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

[0133] Curing condition B: Irradiate ultraviolet rays from the acrylic sheet side and heat with a heater

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

[0135] Curing condition D: Irradiate ultraviolet rays from an acrylic plate, heat with a heating sta...

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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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