Flexible display panel including a plurality of penetrating holes

Patent metadata

Field	Value
Publication number	US-11387296-B2
Application number	US-201916612757-A
Country	US
Kind code	B2
Filing date	Sep 20, 2019
Priority date	Jun 10, 2019
Publication date	Jul 12, 2022
Grant date	Jul 12, 2022

Abstract

A flexible display panel and a method of fabricating the same are provided. The flexible display panel has a display region and a bending region. The flexible display panel has a substrate, an organic pattern layer, layered structures, first holes, and second holes. The organic pattern layer is at the bending region and disposed on the substrate. The layered structures cover the organic pattern layer and the substrate located at the display region. The first holes pass through the layered structures and the organic pattern layer located at the bending region. The second holes pass through the layered structures located at the display region, wherein the second holes are adjacent to the bending region. When the bending portion is bent, the flexible display panel has a specific bending shape by disposing an organic pattern layer. Further, the first holes and the second holes are formed to balance stress.

First claim

What is claimed is:

1. A flexible display panel, having a display region and a bending region, and the flexible display panel comprising:
a substrate;
an organic pattern layer located at the bending region and disposed on the substrate;
a plurality of layered structures covering the organic pattern layer and the substrate located at the display region, wherein the plurality of layered structures comprises:
a protective layer covering the organic pattern layer and the substrate located at the display region;
an organic layer disposed on the protective layer;
a line layer disposed on the organic layer;
a flat layer disposed on the line layer;
a pixel defining layer disposed on the flat layer;
a spacing material layer disposed on the pixel defining layer; and
a dispensing layer disposed on the spacing material layer located at the bending region;
a plurality of first holes passing through the plurality of layered structures and the organic pattern layer located at the bending region; and
a plurality of second holes passing through the plurality of layered structures located at the display region, wherein the plurality of second holes are adjacent to the bending region, wherein the plurality of first holes and the plurality of second holes have a first hole density and a second hole density, respectively, wherein the first hole density is greater than the second hole density.

2. The flexible display panel according to claim 1 , wherein a thickness of the protective layer on the organic pattern layer is smaller than a thickness of the protective layer on the substrate of the display region.

3. The flexible display panel according to claim 1 , wherein material of the protective layer comprises polyimide.

4. A flexible display panel, having a display region and a bending region, and the flexible display panel comprising:
a substrate;
an organic pattern layer located at the bending region and disposed on the substrate;
a plurality of layered structures covering the organic pattern layer and the substrate located at the display region;
a plurality of first holes passing through the plurality of layered structures and the organic pattern layer located at the bending region; and
a plurality of second holes passing through the plurality of layered structures located at the display region, wherein the plurality of second holes are adjacent to the bending region.

5. The flexible display panel according to claim 4 , wherein the plurality of first holes and the plurality of second holes have a first hole density and a second hole density, respectively, wherein the first hole density is greater than the second hole density.

6. The flexible display panel according to claim 4 , wherein the plurality of layered structures comprises:
a protective layer covering the organic pattern layer and the substrate located at the display region;
an organic layer disposed on the protective layer;
a line layer disposed on the organic layer;
a flat layer disposed on the line layer;
a pixel defining layer disposed on the flat layer;
a spacing material layer disposed on the pixel defining layer; and
a dispensing layer disposed on the spacing material layer located at the bending region.

7. The flexible display panel according to claim 6 , wherein a thickness of the protective layer on the organic pattern layer is smaller than a thickness of the protective layer on the substrate of the display region.

8. The flexible display panel according to claim 6 , wherein material of the protective layer comprises polyimide.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd
• Wuhan China Star Optoelectronies Semiconductor Display Tech Co Ltd

Inventors

• Gao Hong

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/124 Primary

  Insulating layers formed between TFT elements and OLED elements · CPC title

• H10H20/815

  having stress relaxation structures, e.g. buffer layers · CPC title

• H10H20/84

  Coatings, e.g. passivation layers or antireflective coatings · CPC title

• G09G2300/0408

  Integration of the drivers onto the display substrate · CPC title