# US 2021/0333602 A1 · Pixel electrode, array substrate and device

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- Number: US 2021/0333602 A1
- Document ID: US20210333602A1
- Status: Published application
- Kind: A1
- Application number: 16/607,254
- Filed: 2019-08-22
- Published: 2021-10-28
- Earliest claimed: 2019-06-25
- Assignees: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Applicants: Wuhan China Star Optoelectronics Technology Co., Ltd.
- Inventors: Shidi XIAO
- Web page: https://patentgrep.com/patent/US20210333602A1

## CPC

- G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making}
- G02F 1/134309: {characterised by their geometrical arrangement}
- G02F 1/136227: {Through-hole connection of the pixel electrode to the active element through an insulation layer}
- G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)}
- H10D 86/441: {Interconnections, e.g. scanning lines}
- H10D 86/60: wherein the TFTs are in active matrices
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES

## Abstract

A pixel electrode, an array substrate, and a display device are disclosed. The pixel electrode includes electrode regions and at least one hollow region distributed between the electrode regions. The hollow region includes a main body part and two ending parts located at two ends of the main body part, at least one ending part is an inflated portion having a width, and a width of the main body part is smaller than the width of the inflated portion. By using the present disclosure, the transparence is improved and the contrast and the power consumption are improved accordingly.

## Claims

### Claim 1

A pixel electrode comprising:
an electrode region; and
at least one hollow region, distributed within the electrode region; wherein the hollow region comprises a main body part and two ending parts located at two ends of the main body part, at least one ending part is an inflated portion having a width, and a width of the main body part is smaller than the width of the inflated portion.

### Claim 2 (depends on 1)

The pixel electrode of claim 1, wherein the inflated portion has a curved shape.

### Claim 3 (depends on 1)

The pixel electrode of claim 1, wherein the two ending parts are both inflated portions.

### Claim 4 (depends on 1)

The pixel electrode of claim 1, wherein the other ending part of the two ending parts extends to the electrode regions and forms a hollowed gap.

### Claim 5 (depends on 4)

The pixel electrode of claim 4, wherein the electrode regions form a corner at the gap, and an edge of the corner has a curved shape.

### Claim 6

An array substrate, comprising a pixel electrode, the pixel electrode comprising:
an electrode region; and
at least one hollow region, distributed within the electrode region; wherein the hollow region comprises a main body part and two ending parts located at two ends of the main body part, at least one ending part is an inflated portion having a width, and a width of the main body part is smaller than the width of the inflated portion.

### Claim 7 (depends on 6)

The array substrate of claim 6, comprising:
a thin film transistor (TFT) structure layer;
a flat layer, positioned on the TFT structure layer; and
a passivation layer, positioned on the flat layer;
wherein the pixel electrode is positioned on the passivation layer.

### Claim 8 (depends on 7)

The array substrate of claim 7, wherein the TFT structure layer comprises a source/drain layer, the flat layer comprises a first via, the passivation layer has a second via, the first via corresponds to the second via, the pixel electrode is coupled to the source/drain layer through the first via and the second via.

### Claim 9 (depends on 8)

The array substrate of claim 8, wherein an aperture of the first via is less than 7 microns and an aperture of the second via is less than 5 microns.

### Claim 10

A display device, comprising a pixel electrode, the pixel electrode comprising:
an electrode region; and
at least one hollow region, distributed within the electrode region; wherein the hollow region comprises a main body part and two ending parts located at two ends of the main body part, at least one ending part is an inflated portion having a width, and a width of the main body part is smaller than the width of the inflated portion.