Flexible array substrate and flexible display panel

Patent metadata

Field	Value
Publication number	US-2025147352-A1
Application number	US-202418937046-A
Country	US
Kind code	A1
Filing date	Nov 5, 2024
Priority date	Nov 7, 2023
Publication date	May 8, 2025
Grant date	—

Abstract

A flexible array substrate and a flexible display panel are provided. The flexible array substrate includes a plurality of pixel island areas sequentially arranged, a plurality of flexible areas, and a plurality of isolation structures. Each of the plurality of flexible areas is disposed between adjacent two of the plurality of pixel island areas. Each of the plurality of isolation structures covers a corresponding one of the plurality of flexible areas, edges of each of the plurality of isolation structures extend out of the corresponding one of the plurality of flexible areas, and an upper surface of each of the plurality of isolation structures defines a groove. Each of the plurality of flexible areas includes an elastic packaging part disposed in the groove and including a light reflective material body. The light reflective material body is configured for pixel compensation.

First claim

What is claimed is:

1 . A flexible array substrate, comprising:
a plurality of pixel island areas sequentially arranged; a plurality of flexible areas, wherein each of the plurality of flexible areas is disposed between adjacent two of the plurality of pixel island areas; and a plurality of isolation structures, wherein each of the plurality of isolation structures covers a corresponding one of the plurality of flexible areas, edges of each of the plurality of isolation structures extend out of the corresponding one of the plurality of flexible areas, and an upper surface of each of the plurality of isolation structures defines a groove; wherein each of the plurality of flexible areas comprises: an elastic packaging part disposed in the groove and comprising a light reflective material body; the light reflective material body is configured for pixel compensation.

2 . The flexible array substrate according to claim 1 , wherein each of the plurality of pixel island areas comprises:
a driving substrate; a pixel definition layer disposed on the driving substrate, wherein the pixel definition layer protrudes from the driving substrate to form a pixel accommodation area; a plurality of sub-pixels disposed in the pixel accommodation area, wherein each of the plurality of sub-pixels comprises an anode, a light-emitting layer, and a cathode stacked on each other, and two ends of the anode are at least partially wrapped by the pixel definition layer; wherein a part of each of the plurality of isolation structures is disposed on a side of a corresponding pixel definition layer away from a corresponding driving substrate.

3 . The flexible array substrate according to claim 1 , wherein each of the plurality of flexible areas further comprises:
an elastic substrate, disposed between adjacent driving substrates; and an opaque material layer, disposed on the elastic substrate and between adjacent pixel definition layers; wherein a part of each of the plurality of isolation structures is disposed on a side of a corresponding opaque material layer away from a corresponding elastic substrate.

4 . The flexible array substrate according to claim 3 , wherein,
a material of the opaque material layer is the same as that of the pixel definition layer; and/or, the opaque material layer is an elastic opaque material layer.

5 . The flexible array substrate according to claim 1 , wherein each of the plurality of isolation structures comprises a conductive metal layer and an isolation column sequentially stacked;
wherein the conductive metal layer covers a corresponding one of the plurality of flexible areas, and edges of the conductive metal layer extend out of the corresponding one of the plurality of flexible areas, and the isolation column is disposed on an upper surface of the conductive metal layer.

6 . The flexible array substrate according to claim 5 , wherein each of the edges of each of the plurality of isolation structures extending out of the corresponding one of the plurality of flexible areas is an irregular shape; and
a width of the elastic packaging part accounts for 40%-60% of a width of a corresponding one of the plurality of isolation structures.

7 . The flexible array substrate according to claim 1 , wherein the light reflective material body comprises:
two-color electrophoretic particles, encapsulated in the elastic packaging part; wherein the two-color electrophoretic particles comprise a plurality of first particles and a plurality of second particles; and an upper surface of the elastic packaging part is provided with a first electrode, and a lower surface of the elastic packaging part is provided with a second electrode.

8 . The flexible array substrate according to claim 7 , wherein
colors of the plurality of first particles are the same as a color of any sub-pixel adjacent to each of the plurality of isolation structures, and colors of the plurality of second particles are black; the first electrode is a transparent electrode, and the second electrode is a light-absorbing electrode, the first electrode and the second electrode are elastic electrodes; and electrical properties of the plurality of first particles are opposite to that of the plurality of second particles; an electrical property of the first electrode is opposite to that of the second electrode.

9 . The flexible array substrate according to claim 8 , wherein the elastic packaging part has a first state, a second state, a third state, and a fourth state:
the first state is a non-display state, the first electrode has a negative electrical property, and the second electrode has a positive electrical property; and in the first state, the plurality of first particles gather towards the lower surface of the elastic packaging part, and the plurality of second particles gather towards the upper surface of the elastic packaging part; the second state is a display state, the first electrode has the positive electrical property, and the second electrode has the negative electrical property; and in the second state, the plurality of first particles gather towards the upper surface of the elastic packaging part, and the plurality of second particles gather towards the lower surface of the elastic packaging part; the third state is to stretch the flexible array substrate on the basis of the first state, and the elastic packaging part, the first electrode, and the second electrode are stretched; and in the third state, the plurality of first particles gather towards a position where the second electrode is located, and the plurality of second particles gather towards a position where the first electrode is located, so that the plurality of first particles cover a surface of the second electrode, and the plurality of second particles cover a surface of the first electrode; and the fourth state is to stretch the flexible array substrate on the basis of the second state, and the elastic packaging part, the first electrode, and the second electrode are stretched; and in the fourth state, the plurality of first particles gather towards the position where the first electrode is located, and the plurality of second particles gather towards the position where the second electrode is located, so that the plurality of first particles cover the surface of the first electrode, and the plurality of second particles cover the surface of the second electrode.

10 . The flexible array substrate according to claim 1 , wherein the light reflective material body comprises:
a plurality of cholesteric microcapsules, wherein a plurality of cholesteric liquid crystals are encapsulated in each of the plurality of cholesteric microcapsules, and the plurality of cholesteric microcapsules are of the same type or are divided into two different types; wherein an upper surface of the elastic packaging part is provided with a first electrode, and a lower surface of the elastic packaging part is provided with a second electrode, and colors of the plurality of cholesteric liquid crystals encapsulated in each of the plurality of cholesteric microcapsules are the same as a color of an adjacent sub-pixel.

11 . The flexible array substrate according to claim 10 , wherein the first electrode is a transparent electrode, the second electrode is a light-absorbing electrode, and the first electrode and the second electrode are elastic electrodes; and
the plurality of cholesteric microcapsules with two different types and located in the elastic packaging part share the same second electrode, and an electrical property of the first electrode is opposite to that of the second electrode.

12 . The flexible array subs

Assignees

• Hkc Corp Ltd

Inventors

• Li Yao
• Cao Zhonglin
• Wu Chuan
• Huang Tien-Chun
• Yuan Haijiang

Classifications

• G02F1/1677

  Structural association of cells with optical devices, e.g. reflectors or illuminating devices · CPC title

• G02F1/167

  by electrophoresis · CPC title

• G02F1/13439

  characterised by their electrical, optical, physical properties; materials therefor; method of making · CPC title

• G02F1/133305 Primary

  Flexible substrates, e.g. plastics, organic film · CPC title

• G02F1/133377

  Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel · CPC title