Flexible display device having curing material layer in different thicknesses and method for manufacturing the same

Patent metadata

Field	Value
Publication number	US-10896938-B2
Application number	US-201615781570-A
Country	US
Kind code	B2
Filing date	Dec 2, 2016
Priority date	Dec 31, 2015
Publication date	Jan 19, 2021
Grant date	Jan 19, 2021

Abstract

Disclosed are a flexible display apparatus and a manufacturing method therefor. The manufacturing method includes the steps of: manufacturing a TFT structure on a flexible substrate, the TFT structure including a non-metal layer area; successively manufacturing a display device and a thin film encapsulation layer on the TFT structure; forming a curing material layer on the thin film encapsulation layer, the curing material layer including a specific area, and a projection of the specific area on the flexible substrate overlapping with a projection of the non-metal layer area on the flexible substrate; and patterning the curing material layer so that the thickness of the specific area of the curing material layer is greater than the thickness of the other area, apart from the specific area, of the curing material layer.

First claim

What is claimed is:

1. A flexible display device, comprising: a flexible substrate, a TFT structure, a display device, a film packaging layer, and a curing material layer laminated successively on the flexible substrate,
wherein the TFT structure comprises a non-metal layer region and a hole region, the curing material layer comprises a specific region, a projection of the specific region on the flexible substrate overlapping a projection of the non-metal layer region on the flexible substrate, the specific region comprises a region of which a projection on the flexible substrate overlaps a projection of the hole region on the flexible substrate;
the curing material layer is patterned, and the specific region of the curing material layer has a thickness greater than a thickness of other regions of the curing material layer other than the specific region.

2. The flexible display device according to claim 1 , wherein the specific region further comprises a region of which a projection on the flexible substrate overlaps a projection of the display device on the flexible substrate.

3. The flexible display device according to claim 1 , wherein the curing material layer comprises a first curing material layer and a second curing material layer, the first curing material layer and the second curing material layer are successively formed on the film packaging layer.

4. The flexible display device according to claim 3 , wherein the first curing material layer has a thickness of 1 to 100 μm and the second curing material layer has a thickness of 50 to 100 μm.

5. The flexible display device according to claim 1 , wherein a curing material used in the curing material layer comprises epoxy resin or acrylate.

6. A method of manufacturing the flexible display device of claim 1 , the method comprising the steps of:
fabricating the thin film transistor (TFT) structure on the flexible substrate, the TFT structure comprising a non-metal layer region and a hole region;
fabricating the display device and the film packaging layer successively on the TFT structure;
forming the curing material layer on the film packaging layer, wherein the curing material layer comprises a specific region, a projection of the specific region on the flexible substrate overlapping a projection of the non-metal layer region on the flexible substrate, the specific region comprises a region of which a projection on the flexible substrate overlaps a projection of the hole region on the flexible substrate; and
patterning the curing material layer, such that the specific region of the curing material layer has a thickness greater than a thickness of other regions of the curing material layer other than the specific region.

7. The method of manufacturing the flexible display device according to claim 6 , wherein in the forming the curing material layer on the film packaging layer, the specific region further comprises a region of which a projection on the flexible substrate overlaps a projection of the display device on the flexible substrate.

8. The method of manufacturing the flexible display device according to claim 6 , wherein in the forming the curing material layer on the film packaging layer, the curing material layer comprises a first curing material layer and a second curing material layer, the first curing material layer and the second curing material layer are successively formed on the film packaging layer.

9. The method of manufacturing the flexible display device according to claim 6 , wherein a curing material used in the curing material layer comprises epoxy resin or acrylate.

10. The method of manufacturing the flexible display device according to claim 8 , wherein the forming the curing material layer on the film packaging layer further comprises:
coating a first curing material on the film packaging layer, curing the first curing material completely according to a first curing condition to form the first curing material layer; and
coating a second curing material on the first curing material layer, semi-curing the second curing material according to a second curing condition to form a semi-curing material layer.

11. The method of manufacturing the flexible display device according to claim 10 , wherein the patterning the curing material layer, such that the specific region of the curing material layer has the thickness greater than the thickness of other regions of the curing material layer other than the specific region comprises:
patterning the semi-curing material layer by exposure and development to obtain the patterned semi-curing material layer;
curing the patterned semi-curing material layer according to a third curing condition to form the second curing material layer.

12. The method of manufacturing the flexible display device according to claim 10 , wherein the first curing condition includes a curing temperature being 100° C. to 150° C., and a curing time of 0.5 to 2 hours; the second curing condition includes: a curing temperature being 100° C. to 150° C., and a curing time of 1 to 30 minutes.

13. The method of manufacturing the flexible display device according to claim 10 , wherein the first curing material layer has a thickness of 1 to 100 μm; the second curing material layer has a thickness of 50 to 100 μm.

14. The method of manufacturing the flexible display device according to claim 11 , wherein the third curing condition includes: a curing temperature being 100° C., and a curing time of 0.5 to 2 hours.

15. The flexible display device according to claim 1 , wherein the curing material layer is patterned to have the specific region of the curing material layer protruded to a direction away from the flexible substrate, thereby having the thickness greater than the thickness of other regions of the curing material layer other than the specific region.

Assignees

• Kunshan New Flat Panel Display Technology Ct Co Ltd

Inventors

• Zhang Xiuyu
• Dang Pengle
• Zhang Xiaobao
• Ding Liwei
• Jiang Haibin
• Zhu Hui

Classifications

• H10K59/873

  Encapsulations · CPC title

• H10D86/411

  characterised by materials, geometry or structure of the substrates · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10D86/40

  characterised by multiple TFTs · CPC title

• H10D86/021 Primary

  of multiple TFTs · CPC title