Flexible display panel, manufacturing method thereof and display device

Patent metadata

Field	Value
Publication number	US-11061438-B2
Application number	US-201715764347-A
Country	US
Kind code	B2
Filing date	Jul 18, 2017
Priority date	Oct 20, 2016
Publication date	Jul 13, 2021
Grant date	Jul 13, 2021

Abstract

A flexible display panel includes a flexible substrate with a display region and an electrode bonding region. The flexible substrate includes a display surface and a non-display surface opposite to the display surface. Wherein the flexible substrate at a position corresponding to the electrode bonding region is bent along a direction from the display surface to the non-display surface.

First claim

What is claimed is:

1. A flexible display panel, comprising a flexible substrate with a display region and an electrode bonding region, the flexible substrate comprising a display surface and a non-display surface opposite to the display surface, wherein the flexible substrate at a position corresponding to the electrode bonding region is bent along a direction from the display surface to the non-display surface;
wherein a back film is attached to the non-display surface of the flexible substrate corresponding to the display region;
wherein a thin film encapsulation layer is provided on the flexible substrate, a length of the back film is greater than that of the thin film encapsulation layer in an extending direction from the display region to the electrode bonding region.

2. The flexible display panel according to claim 1 , wherein an orthogonal projection region of the flexible substrate at the position corresponding to the electrode bonding region on the flexible substrate at a position corresponding to the display region has an overlapped region with the display region.

3. The flexible display panel according to claim 2 , wherein a bending angle formed between the flexible substrate corresponding to the electrode bonding region and the flexible substrate corresponding to the electrode bonding region is 180 degrees.

4. The flexible display panel according to claim 1 , further comprising a function film provided on a side of the flexible display panel away from the back film, the function film comprising a first sub-function film and a second sub-function film, wherein
the first sub-function film is provided on the flexible substrate at the position corresponding to the display region; and
the second sub-function film is provided on the flexible substrate at the position corresponding to the electrode bonding region.

5. The flexible display panel according to claim 4 , wherein the function film is a touch control film.

6. A display device, comprising the flexible display panel according to claim 1 .

7. The display device according to claim 6 , wherein an orthogonal projection region of the flexible substrate at the position corresponding to the electrode bonding region on the flexible substrate at a position corresponding to the display region has an overlapped region with the display region.

8. The display device according to claim 7 , wherein a bending angle formed between the flexible substrate corresponding to the electrode bonding region and the flexible substrate corresponding to the electrode bonding region is 180 degrees.

9. A method for manufacturing a flexible display panel, the flexible display panel comprising a flexible substrate with a display region and an electrode bonding region, the flexible substrate comprising a display surface and a non-display surface opposite to the display surface, wherein the method comprises:
manufacturing a thin film transistor, an electroluminescent layer and a thin film encapsulation layer on the flexible substrate,
forming a back film on the non-display surface of the flexible substrate at a position corresponding to the display region, wherein a length of the back film is greater than that of the thin film encapsulation layer in an extending direction from the display region to the electrode bonding region;
bending the flexible substrate at a position corresponding to the electrode bonding region in a direction from the display surface to the non-display surface.

10. The method according to claim 9 , wherein the step of bending the flexible substrate at a position corresponding to the electrode bonding region in a direction from the display surface to the non-display surface comprises:
bending the flexible substrate at the position corresponding to the electrode bonding region in a direction away from the display surface at a boundary of the display region of the flexible substrate and the electrode bonding region of the flexible substrate.

11. The method according to claim 9 , wherein before the step of bending the flexible substrate at a position corresponding to the electrode bonding region in a direction from the display surface to the non-display surface, the method further comprises:
forming a back film on the non-display surface covering the entire flexible substrate; and
removing the back film at a position corresponding to the electrode bonding region.

12. The method according to claim 11 , further comprising manufacturing a function film on a side of the flexible display panel away from the back film, the function film comprising a first sub-function film and a second sub-function film, wherein
the first sub-function film is provided on the flexible substrate at the position corresponding to the display region; and
the second sub-function film is provided on the flexible substrate at the position corresponding to the electrode bonding region.

13. The method according to claim 9 , further comprising manufacturing a function film on a side of the flexible display panel away from the back film, the function film comprising a first sub-function film and a second sub-function film, wherein
the first sub-function film is provided on the flexible substrate at the position corresponding to the display region; and
the second sub-function film is provided on the flexible substrate at the position corresponding to the electrode bonding region.

Assignees

• Boe Technology Group Co Ltd
• Chengdu Boe Optoelect Tech Co

Inventors

• Zeng mu
• Wang Tao
• Wang Zhouping
• Yang Guowen

Classifications

• G06F1/1652 Primary

  the display being flexible, e.g. mimicking a sheet of paper, or rollable · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/04164 Primary

  Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title