# US 2022/0045154 A1 · Display panel and display device

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- Number: US 2022/0045154 A1
- Document ID: US20220045154A1
- Status: Published application
- Kind: A1
- Application number: 16/758,056
- Filed: 2020-03-24
- Published: 2022-02-10
- Earliest claimed: 2020-03-06
- Assignees: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Applicants: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Inventors: Sisi ZHOU
- Web page: https://patentgrep.com/patent/US20220045154A1

## CPC

- H10K 59/80515: {characterised by their shape}
- H10K 59/1213: {the pixel elements being TFTs}
- H10K 59/124: Insulating layers formed between TFT elements and OLED elements
- H10K 59/131: Interconnections, e.g. wiring lines or terminals
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES

## Abstract

The present application provides a display panel and a display device. The display panel includes a substrate, a driving circuit layer disposed on the substrate, and a light-emitting layer disposed on the driving circuit layer. The driving circuit layer includes a first metal layer, the first metal layer includes a first metal trace, the light-emitting layer includes multiple light-emitting portions, and a vertical distance between an orthographic projection of a center of each light-emitting portion projected on the first metal layer and a symmetry axis of the first metal trace is less than or equal to 5 μm.

## Claims

### Claim 1

A display panel, comprising:
a substrate;
a driving circuit layer disposed on the substrate; and
a light-emitting layer disposed on the driving circuit layer;
wherein the driving circuit layer comprises a first metal layer, the first metal layer comprises a first metal trace , the light-emitting layer comprises a plurality of light-emitting portions, and a vertical distance between an orthographic projection of a center of each light-emitting portion projected on the first metal layer and a symmetry axis of the first metal trace is less than or equal to 5 μm.

### Claim 2 (depends on 1)

The display panel according to claim 1, wherein the vertical distance between the orthographic projection of the center of each light-emitting portion projected on the first metal layer and the symmetry axis of the first metal trace is less than or equal to 2 μm.

### Claim 3 (depends on 1)

The display panel according to claim 1, wherein the orthographic projection of the center of each light-emitting portion projected on the first metal layer overlaps with the symmetry axis of the first metal trace.

### Claim 4 (depends on 1)

The display panel according to claim 1, wherein a first passivation layer is disposed between the first metal layer and the light-emitting layer.

### Claim 5 (depends on 1)

The display panel according to claim 1, wherein the driving circuit layer further comprises a second metal layer, the second metal layer comprises a second metal trace, the second metal layer is disposed between the first metal layer and the substrate, and a second passivation layer is disposed between the first metal layer and the second metal layer.

### Claim 6 (depends on 1)

The display panel according to claim 1, wherein the first metal layer is a first source/drain layer.

### Claim 7 (depends on 5)

The display panel according to claim 5, wherein the second metal layer is a second source/drain layer.

### Claim 8 (depends on 5)

The display panel according to claim 5, wherein an orthographic projection of the light-emitting portion projected on the second metal layer overlaps with an orthographic projection of a portion of the first metal trace projected on the second metal layer.

### Claim 9 (depends on 1)

The display panel according to claim 1, wherein the first metal layer is made of a titanium-aluminum-titanium laminate.

### Claim 10 (depends on 1)

A display device, comprising the display panel of claim 1.

### Claim 11 (depends on 10)

The display device according to claim 10, wherein the vertical distance between the orthographic projection of the center of each light-emitting portion projected on the first metal layer and the symmetry axis of the first metal trace is less than or equal to 2 μm.

### Claim 12 (depends on 10)

The display device according to claim 10, wherein the orthographic projection of the center of each light-emitting portion projected on the first metal layer overlaps with the symmetry axis of the first metal trace.

### Claim 13 (depends on 10)

The display device according to claim 10, wherein a first passivation layer is disposed between the first metal layer and the light-emitting layer.

### Claim 14 (depends on 10)

The display device according to claim 10, wherein the driving circuit layer further comprises a second metal layer, the second metal layer comprises a second metal trace, the second metal layer is disposed between the first metal layer and the substrate, and a second passivation layer is disposed between the first metal layer and the second metal layer.

### Claim 15 (depends on 10)

The display device according to claim 10, wherein the first metal layer is a first source/drain layer.

### Claim 16 (depends on 10)

The display device according to claim 10, wherein the second metal layer is a second source/drain layer.

### Claim 17 (depends on 14)

The display device according to claim 14, wherein an orthographic projection of the light-emitting portion projected on the second metal layer overlaps with an orthographic projection of a portion of the first metal trace projected on the second metal layer.

### Claim 18 (depends on 14)

The display device according to claim 14, wherein the first metal layer is made of a titanium-aluminum-titanium laminate.