Multilayer structure, method for producing the same and touch sensitive display using the same

Patent metadata

Field	Value
Publication number	US-10558071-B2
Application number	US-201013634918-A
Country	US
Kind code	B2
Filing date	Sep 7, 2010
Priority date	Mar 14, 2010
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

Abstract

The present invention is directed to an optical bonding apparatus with multiple layer structure including a pressure sensitive bonding layer and a thermal flow pressure sensitive bonding layer. The thermal flow pressure sensitive bonding layer is used for bonding to a rough surface of an object and superposing on the pressure sensitive bonding layer.

First claim

What is claimed is:

1. A touch sensitive display comprising:
a touch panel;
a liquid crystal display (LCD) panel facing the touch panel, wherein either the touch panel or the LCD panel has a rough surface; and
an optical bonding apparatus placed between the touch panel and the LCD panel for bonding the touch panel and the LCD panel, the optical bonding apparatus comprising:
a transparent pressure sensitive bonding layer;
a transparent thermal flow pressure sensitive bonding layer; and
an organic substrate placed between the transparent pressure sensitive bonding layer and the transparent thermal flow pressure sensitive bonding layer for bonding the transparent pressure sensitive bonding layer and the transparent thermal flow pressure sensitive bonding layer, wherein:
the organic substrate is in direct contact with the transparent pressure sensitive bonding layer and the transparent thermal flow pressure sensitive bonding layer,
the transparent pressure sensitive bonding layer has viscidity at room temperature and the transparent thermal flow pressure sensitive bonding layer has no viscidity at room temperature,
the transparent thermal flow pressure sensitive bonding layer is configured to substantially uniformly contact the rough surface of the touch panel or the LCD panel,
the transparent thermal flow pressure sensitive bonding layer fills a plurality of gaps on the rough surface of the touch panel or the LCD panel, and
the transparent thermal flow pressure sensitive bonding layer is an anisotropic conductive film.

2. The touch sensitive display according to claim 1 , wherein the rough surface is a surface of the LCD panel.

3. The touch sensitive display according to claim 2 , wherein the transparent thermal flow pressure sensitive bonding layer completely covers the rough surface of the LCD panel.

4. The touch sensitive display according to claim 1 , wherein the rough surface is a surface of the touch panel.

5. The touch sensitive display according to claim 4 , wherein the transparent thermal flow pressure sensitive bonding layer completely covers the rough surface of the touch panel.

6. The touch sensitive display according to claim 1 , wherein a material of the organic substrate is polyethylene terephthalate.

7. The touch sensitive display according to claim 1 , wherein the organic substrate is 25 μm to 100 μm thick.

8. The touch sensitive display according to claim 1 , wherein the transparent pressure sensitive bonding layer is 25 μm to 50 μm thick.

9. The touch sensitive display according to claim 1 , wherein:
the touch panel has a first width,
the LCD panel has a second width different than the first width, and
the optical bonding apparatus has a third width different than the first width and the second width.

Assignees

• Lee Yuhwen
• Xu Xianbin
• Yuan Qiong
• Lin Fengming
• Tpk Touch Solutions Xiamen Inc

Inventors

• Lee Yuhwen
• Xu Xianbin
• Yuan Qiong
• Lin Fengming

Classifications

• Y10T428/264

  Up to 3 mils · CPC title

• Y10T156/10

  Methods of surface bonding and/or assembly therefor · CPC title

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• Y10T428/266

  of base or substrate · CPC title

• Y10T428/2813

  Heat or solvent activated or sealable · CPC title