Array substrate and flexible display panel

Patent metadata

Field	Value
Publication number	US-11195859-B2
Application number	US-202016770769-A
Country	US
Kind code	B2
Filing date	Feb 13, 2020
Priority date	Dec 10, 2019
Publication date	Dec 7, 2021
Grant date	Dec 7, 2021

Abstract

An array substrate and a flexible display panel are provided. The array substrate is in a bending region and includes a base; an inorganic layer formed on the base, wherein at least one hollowing-out region is disposed in the inorganic layer, and the hollowing-out region is non-filled or filled with an organic matter; and a metal layer formed on the inorganic layer and connected to layers on a bottom of the inorganic layer by at least one via hole encircled by the at least one hollowing-out region. When the flexible display panel is bent, the at least one hollowing-out region provides a good channel for releasing stress in the inorganic layer and improves the bending performance of the flexible display panel.

First claim

What is claimed is:

1. An array substrate, wherein the array substrate is in a bending region and comprises:
a base;
an inorganic layer formed on the base, wherein at least one hollowing-out region is disposed in the inorganic layer, and the hollowing-out region is non-filled or filled with an organic matter; and
a metal layer formed on the inorganic layer and connected to layers on a bottom of the inorganic layer by at least one via hole encircled by the at least one hollowing-out region;
wherein the inorganic layer comprises at least two layers,
wherein the inorganic layer comprises a first inorganic layer and a second inorganic layer, the metal layer comprises a first metal layer and a second metal layer, the first metal layer, the second inorganic layer, and the second metal layer are sequentially formed on the first inorganic layer, the first inorganic layer is any layer of a first gate insulating layer, a second gate insulating layer, or an interlayer insulation layer, the first metal layer is a source/drain electrode layer, the second inorganic layer is a passivation layer, and the second metal layer is a pixel electrode layer.

2. The array substrate as claimed in claim 1 , wherein the inorganic layer comprises any two of a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, and the metal layer is a source/drain electrode layer.

3. The array substrate as claimed in claim 2 , wherein the inorganic layer comprises a first inorganic layer and a second inorganic layer, the metal layer comprises a first metal layer and a second metal layer, the first metal layer, the second inorganic layer, and the second metal layer are sequentially formed on the first inorganic layer, the first inorganic layer comprises any two of a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, the first metal layer is a source/drain electrode layer, the second inorganic layer is a passivation layer, and the second metal layer is a pixel electrode layer.

4. The array substrate as claimed in claim 2 , wherein the inorganic layer comprises a first inorganic layer and a second inorganic layer, the metal layer comprises a first metal layer and a second metal layer, the first metal layer, the second inorganic layer, and the second metal layer are sequentially formed on the first inorganic layer, the first inorganic layer comprises a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, the first metal layer is a source/drain electrode layer, the second inorganic layer is a passivation layer, and the second metal layer is a pixel electrode layer.

5. The array substrate as claimed in claim 1 , wherein the inorganic layer comprises a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, and the metal layer is a source/drain electrode layer.

6. A flexible display panel, comprising an array substrate, wherein the array substrate is in a bending region and comprises:
a base;
an inorganic layer formed on the base, wherein at least one hollowing-out region is disposed in the inorganic layer, and the hollowing-out region is non-filled or filled with an organic matter; and
a metal layer formed on the inorganic layer and connected to layers on a bottom of the inorganic layer by at least one via hole encircled by the at least one hollowing-out region;
wherein the inorganic layer comprises at least two layers,
wherein the inorganic layer comprises a first inorganic layer and a second inorganic layer, the metal layer comprises a first metal layer and a second metal layer, the first metal layer, the second inorganic layer, and the second metal layer are sequentially formed on the first inorganic layer, the first inorganic layer is any layer of a first gate insulating layer, a second gate insulating layer, or an interlayer insulation layer, the first metal layer is a source/drain electrode layer, the second inorganic layer is a passivation layer, and the second metal layer is a pixel electrode layer.

7. The flexible display panel as claimed in claim 6 , wherein the inorganic layer comprises any two of a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, and the metal layer is a source/drain electrode layer.

8. The flexible display panel as claimed in claim 7 , wherein the inorganic layer comprises a first inorganic layer and a second inorganic layer, the metal layer comprises a first metal layer and a second metal layer, the first metal layer, the second inorganic layer, and the second metal layer are sequentially formed on the first inorganic layer, the first inorganic layer comprises any two of a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, the first metal layer is a source/drain electrode layer, the second inorganic layer is a passivation layer, and the second metal layer is a pixel electrode layer.

9. The flexible display panel as claimed in claim 7 , wherein the inorganic layer comprises a first inorganic layer and a second inorganic layer, the metal layer comprises a first metal layer and a second metal layer, the first metal layer, the second inorganic layer, and the second metal layer are sequentially formed on the first inorganic layer, the first inorganic layer comprises a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, the first metal layer is a source/drain electrode layer, the second inorganic layer is a passivation layer, and the second metal layer is a pixel electrode layer.

10. The flexible display panel as claimed in claim 6 , wherein the inorganic layer comprises a first gate insulating layer, a second gate insulating layer, and an interlayer insulation layer, and the metal layer is a source/drain electrode layer.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Wu Shaojing

Classifications

• H10D86/451

  characterised by the compositions or shapes of the interlayer dielectrics · CPC title

• H10D86/441

  Interconnections, e.g. scanning lines · CPC title

• H10D86/411 Primary

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

• H10D86/60 Primary

  wherein the TFTs are in active matrices · CPC title

• G06F1/1641

  the display being formed by a plurality of foldable display components (G06F1/1647 takes precedence) · CPC title