Display panel and display device

Patent metadata

Field	Value
Publication number	US-12507548-B2
Application number	US-202117915921-A
Country	US
Kind code	B2
Filing date	Nov 4, 2021
Priority date	Mar 9, 2021
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

A display panel includes: a substrate, and a plurality of pixel circuits, an initial signal line and a plurality of light-emitting devices that are disposed on the substrate. The initial signal line is coupled to the plurality of pixel circuits, and includes a plurality of first signal lines and a plurality of second signal lines, the plurality of second signal lines are farther away from the substrate than the plurality of first signal lines, and the plurality of first signal lines are coupled to the plurality of second signal lines. Each light-emitting device of the plurality of light-emitting devices is coupled to a pixel circuit of the plurality of pixel circuits, the light-emitting device includes a first electrode, and orthographic projections of first electrodes of the plurality of light-emitting devices on the substrate do not overlap with orthographic projections of the plurality of second signal lines on the substrate.

First claim

What is claimed is:

1 . A display panel, comprising:
a substrate; a plurality of pixel circuits disposed on the substrate; an initial signal line disposed on the substrate, wherein the initial signal line is coupled to the plurality of pixel circuits, the initial signal line includes a plurality of first signal lines and a plurality of second signal lines, the plurality of second signal lines are farther away from the substrate than the plurality of first signal lines, and the plurality of first signal lines are coupled to the plurality of second signal lines; a plurality of light-emitting devices disposed on the substrate, wherein each light-emitting device of the plurality of light-emitting devices is coupled to a pixel circuit of the plurality of pixel circuits, the light-emitting device includes a first electrode, and orthographic projections of first electrodes of the plurality of light-emitting devices on the substrate do not overlap with orthographic projections of the plurality of second signal lines on the substrate; a plurality of second conductive patterns disposed on the substrate, the plurality of second conductive patterns being coupled to the plurality of first signal lines, wherein the pixel circuit includes a first reset transistor and a second reset transistor; the first reset transistor and the second reset transistor are each coupled to a second conductive pattern; and a second signal line of the plurality of second signal lines is coupled to one of the first reset transistor and the second reset transistor through a second conductive pattern coupled to the one of the first reset transistor and the second reset transistor; and at least one third conductive pattern arranged in a same layer as the plurality of second conductive patterns, wherein an orthographic projection of the at least one third conductive pattern on the substrate and an orthographic projection of at least one second conductive pattern of the plurality of second conductive patterns on the substrate both overlap with an orthographic projection of a first electrode of a light-emitting device of at least one light-emitting device of the plurality of light-emitting devices on the substrate; and in a row direction in which the plurality of pixel circuits are arranged, the at least one third conductive pattern and the at least one second conductive pattern are located on two opposite sides of the first electrode of the light-emitting device of the at least one light-emitting device.

2 . The display panel according to claim 1 , wherein the first electrodes of the plurality of light-emitting devices are arranged in a same layer as the plurality of second signal lines.

3 . The display panel according to claim 1 , wherein an extending direction of a second signal line of the plurality of second signal lines intersects an extending direction of a first signal line of the plurality of first signal lines.

4 . The display panel according to claim 1 , wherein a second signal line of the plurality of second signal lines is coupled to at least two first signal lines of the plurality of first signal lines, and the at least two first signal lines are not necessarily adjacent.

5 . The display panel according to claim 1 , wherein in an extending direction of the plurality of first signal lines, at least two second signal lines of the plurality of second signal lines coupled to a same first signal line are not necessarily adjacent.

6 . The display panel according to claim 1 , further comprising a plurality of first conductive patterns disposed on the substrate, wherein
in a direction perpendicular to a plane where the substrate is located, the plurality of first conductive patterns are located between the plurality of first signal lines and the plurality of second signal lines; and a second signal line of the plurality of second signal lines is coupled to a first signal line of the plurality of first signal lines through a first conductive pattern of the plurality of first conductive patterns.

7 . The display panel according to claim 6 , wherein in a column direction in which the plurality of pixel circuits are arranged, a surface of the first signal line has a protruding portion; and
an orthographic projection of the protruding portion on the substrate overlaps with an orthographic projection of the first conductive pattern on the substrate.

8 . The display panel according to claim 1 , further comprising a plurality of power supply voltage lines disposed on the substrate, wherein
the plurality of power supply voltage lines are arranged in a same layer as the at least one third conductive pattern, and the at least one third conductive pattern is in contact with at least one power supply voltage line of the plurality of power supply voltage lines.

9 . The display panel according to claim 8 , further comprising at least one fourth conductive pattern disposed on the substrate, wherein the at least one fourth conductive pattern is arranged in a same layer as the plurality of first signal lines, and the at least one fourth conductive pattern is coupled to one or more power supply voltage lines of the plurality of power supply voltage lines;
the pixel circuit further includes a driving transistor, and the driving transistor is coupled to the first reset transistor; and an orthographic projection of a fourth conductive pattern of the at least one fourth conductive pattern on the substrate overlaps with an orthographic projection of the first reset transistor on the substrate.

10 . The display panel according to claim 9 , wherein the pixel circuit further includes a compensation transistor; the compensation transistor is coupled to the driving transistor and the first reset transistor; and
the orthographic projection of the fourth conductive pattern on the substrate further overlaps with an orthographic projection of the compensation transistor on the substrate.

11 . The display panel according to claim 9 , further comprising a plurality of data lines, wherein the plurality of data lines are disposed on the substrate and arranged in a same layer as the plurality of power supply voltage lines; and
an orthographic projection of the at least one fourth conductive pattern on the substrate does not overlap with orthographic projections of the plurality of data lines on the substrate.

12 . The display panel according to claim 11 , further comprising at least one fifth conductive pattern, wherein the at least one fifth conductive pattern is disposed on the substrate and arranged in a same layer as the plurality of data lines;
an orthographic projection of at least one data line of the plurality of data lines on the substrate and an orthographic projection of the at least one fifth conductive pattern on the substrate both overlap with an orthographic projection of a first electrode of a light-emitting device of one or more light-emitting devices of the plurality of light-emitting devices on the substrate; and in a row direction in which the plurality of pixel circuits are arranged, the at least one fifth conductive pattern and the at least one data line are located on two opposite sides of the first electrode of the light-emitting device of the one or more light-emitting devices.

13 . A display device, comprising:
the display panel according to claim 1 ; and a driving chip coupled to the display panel, wherein the driving chip is configured to provide signals to the display panel.

14 . The display panel according to claim 10 , further comprising a plurality of data lines, wherein the plurality of data lines are disposed on the substrate and a

Assignees

• Chengdu Boe Optoelect Tech Co
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Liao Maoying
• Tian Hua
• Qu Yi
• Wang Siyu
• Wang Yiding
• Yang Huijuan
• Liu Tingliang
• Zhang Yi

Classifications

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title