Method for producing image display apparatus

Patent metadata

Field	Value
Publication number	US-10876013-B2
Application number	US-45032508-A
Country	US
Kind code	B2
Filing date	Apr 10, 2008
Priority date	Apr 10, 2007
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

Exemplary embodiments enable a high-luminance and high-contrast image to be displayed so that there are no defects resulting from deforming an image display part, the curable resin composition has a uniform thickness, and air bubbles are prevented in the curable resin composition. A method for producing an image display apparatus including coating a curable resin composition onto a base, arranging the base and the protective part to face each other, and forming a cured resin layer between the base and the protective part, wherein a resin composition has a curing shrinkage ratio of 5% or less, a cured product storage modulus of 1×107 Pa or less at 25° C., and a light transmittance in a visible region of 90% or more, and the curable resin composition coated onto the base or the protective part has a pattern with a prescribed shape.

First claim

The invention claimed is:

1. A method for producing an image display apparatus comprising:
(a) coating a curable resin composition having a curing shrinkage ratio of 5% or less onto a base having an image display part or onto a light-transmitting protective part arranged on the image display part, wherein the curable resin composition coated onto the base or the protective part has a pattern with a prescribed shape formed from:
(i) a center pattern positioned in the center portion of the coating face of the base or the protective part, and the center pattern is formed in a belt pattern extending linearly in a direction of a long side of the base or the protective part,
(ii) a corner pattern positioned adjacent to a corner of the coating face and which is continuous with or separated from the center pattern, and the corner pattern is formed in an arm portion pattern that branches out and extends in four directions from either end of the center pattern, with the arm portion pattern being arranged on a reference line from either end of the center pattern to each corner of a coating face of the base or the protective part, and
(iii) a circular resin composition pattern that is separate from the center pattern and the corner pattern and that is formed between an end of the corner pattern and each of the corner of the coating face of the base or the protective part,
wherein a thickness of the curable resin composition at the center portion of a coating face of the base or the protective part is thicker than a thickness of the curable resin composition at a corner portion of the coating face of base or the protective part, and
the thickness of the curable resin composition tapers downwardly from the center portion of the coating face of the base or the protective part to a periphery of the corner portion of the coating face of base or the protective part;

(b) then arranging the base and the protective part to face each other in close proximity so that the curable resin composition is made to spread between the base and the protective part; and
(c) then forming a cured resin layer between the base and the protective part by curing the curable resin composition, wherein the cured resin layer has a storage modulus of from 1×10 3 Pa to 1×10 6 Pa at 25° C., and a light transmittance of the cured resin layer in a visible region is 90% or more.

2. The production method according to claim 1 , wherein the circular resin composition pattern is arranged on the reference line.

3. The production method according to claim 1 , wherein the curable resin composition is coated on both the base and the protective part.

4. The production method according to claim 1 , wherein the curable resin composition has a curing shrinkage ratio of 4.0% or less.

5. The production method according to claim 1 , wherein the cured resin layer has a thickness of 50 to 200 μm.

6. The production method according to claim 1 , wherein the image display part is a liquid crystal display panel.

7. The production method according to claim 1 , wherein the protective part is formed from an acrylic resin.

8. The production method according to claim 1 , wherein the protective part is formed from an optical glass.

Assignees

• Toyoda Tomoyuki
• Kamata Yusuke
• Shinya Yoshihisa
• Dexerials Corp

Inventors

• Toyoda Tomoyuki
• Kamata Yusuke
• Shinya Yoshihisa

Classifications

• G02F1/133331 Primary

  Cover glasses · CPC title

• C09D133/02 Primary

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• G02F1/133308

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02F2202/023

  curable · CPC title