Cover structure, manufacturing method thereof and display device

Patent metadata

Field	Value
Publication number	US-11069264-B2
Application number	US-201815991117-A
Country	US
Kind code	B2
Filing date	May 29, 2018
Priority date	Aug 11, 2017
Publication date	Jul 20, 2021
Grant date	Jul 20, 2021

Abstract

The present disclosure discloses a cover structure, a manufacturing method thereof and a display device. The cover structure includes a first and a second transparent flexible film layer, a glass panel, and a first optical adhesive layer. The first transparent flexible film layer has a folded region and a non-folded region. The glass panel is disposed on the first transparent flexible film layer, and a projection of the glass panel on the first transparent flexible film layer is located inside the non-folded region. A part of the first optical adhesive layer is formed at a side of the glass panel facing away from the first transparent flexible film layer, and a part of the first optical adhesive layer covers the folded region of the first transparent flexible film layer. The second transparent flexible film layer is formed at a side of the first optical adhesive layer facing away from the first transparent flexible film layer.

First claim

What is claimed is:

1. A cover structure, comprising:
a first transparent flexible film layer having a folded region and a non-folded region;
a glass panel directly contacts a side of the first transparent flexible film layer, wherein a projection of the glass panel on a side of the first transparent flexible film layer is located inside the non-folded region and the folded region of the first transparent flexible film layer is not provided with the glass panel;
a first optical adhesive layer, wherein the first optical adhesive layer is a single structure, and a part of the first optical adhesive layer is formed at a side of the glass panel facing away from the first transparent flexible film layer, and a part of the first optical adhesive layer directly contacts the folded region of the first transparent flexible film layer and directly contacts side surfaces of the glass panel;
a second transparent flexible film layer formed at a side of the first optical adhesive layer facing away from the first transparent flexible film layer and directly contacts the first optical adhesive layer; and
an anti-glare layer formed at a side of the first transparent flexible film layer facing away from the second transparent flexible film layer and directly contacts the first transparent flexible film layer;
wherein the first optical adhesive layer is colorless and transparent, has a light transmittance of 90% or more;
the anti-glare layer is configured to eliminate a boundary effect between the folded region and non-folded region caused by specular reflections, thereby leading to homogenization of an optical effect of an integrated display device.

2. The cover structure according to claim 1 , wherein the glass panel is adhered to the first transparent flexible film layer.

3. The cover structure according to claim 2 , wherein an adhesive material between the glass panel and the first transparent flexible film layer is an optical adhesive.

4. The cover structure according to claim 1 , wherein material of each of the first transparent flexible film layer and the second transparent flexible film layer is polyimide.

5. A manufacturing method of a cover structure for manufacturing the cover structure according to claim 1 , wherein the manufacturing method comprises:
providing a glass panel on a non-folded region at a side of a first transparent flexible film layer;
providing a first optical adhesive layer on the glass panel, wherein the first optical adhesive layer is a single structure and a part of the first optical adhesive layer is formed at a side of the glass panel facing away from the first transparent flexible film layer, a part of the first optical adhesive layer covers a folded region of the first transparent flexible film layer and the first optical adhesive layer covers folded region of the first transparent flexible film layer;
forming a second transparent flexible film layer on the first optical adhesive layer;
creating an anti-glare particle layer on a side of the first transparent flexible film layer facing away from the second transparent flexible film layer by means of slit coating,
forming an anti-glare layer by providing a baking process for the anti-glare particle layer; and
forming a decorative ink layer on the second transparent flexible film layer by means of baking process,
wherein a side of the anti-glare layer facing away from the first transparent flexible film layer is formed with a plurality of protruding structures.

6. The manufacturing method according to claim 5 , further comprising forming a second optical adhesive layer between the first transparent flexible film layer and the glass panel.

7. A display device, wherein the display device comprises the cover structure according to claim 1 .

Assignees

• Boe Technology Group Co Ltd

Inventors

• Li Jianwei
• Tsai Pao Ming
• Du Shuang
• Li Hong
• Bu Dejun
• Chen Liqiang
• Liu Lu
• Cai Peng

Classifications

• G02B5/0294

  adapted to provide an additional optical effect, e.g. anti-reflection or filter · CPC title

• B32B27/281 Primary

  comprising polyimides · CPC title

• G09F9/301 Primary

  flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED · CPC title

• B32B2457/20

  Displays, e.g. liquid crystal displays, plasma displays · CPC title

• G02B1/11

  Anti-reflection coatings · CPC title