Display panel and display device

Patent metadata

Field	Value
Publication number	US-12514047-B2
Application number	US-202118014089-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Aug 6, 2021
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

Provided are a display panel and a display device. The display panel includes a first display region and a second display region. The display panel further includes a pixel circuit, and the pixel circuit is configured to drive a light-emitting element to emit light. The distribution density of the pixel circuit in the first display region is less than the distribution density of the pixel circuit in the second display region. The first display region includes a compensation structure, and the compensation structure includes at least one layer of compensation film. The first display region further includes multiple first light-emitting elements, and the multiple first light-emitting elements each includes an anode. The anode at least partially overlaps the compensation structure in the first direction, and the first direction is perpendicular to a plane in which a substrate is located.

First claim

What is claimed is:

1 . A display panel, comprising a first display region and a second display region;
wherein the display panel further comprises pixel circuits, and the pixel circuits are configured to drive light-emitting elements to emit light; wherein a distribution density of the pixel circuits in the first display region is less than a distribution density of the pixel circuits in the second display region; wherein the first display region comprises a compensation structure, and the compensation structure comprises at least one layer of compensation film; and wherein the first display region further comprises a plurality of first light-emitting elements, and each of the plurality of first light-emitting elements comprises an anode; the anode at least partially overlaps the compensation structure in a first direction; and the display panel further comprises a substrate, and the first direction is perpendicular to a plane in which the substrate is located; wherein the pixel circuits comprise fifth pixel circuits and sixth pixel circuits, the fifth pixel circuits are disposed in the first display region, and the sixth pixel circuits are disposed in the second display region; the second display region further comprises a plurality of fourth light-emitting elements; and a fifth pixel circuit of the fifth pixel circuits is configured to drive at least two of the plurality of first light-emitting elements, and a sixth pixel circuit of the sixth pixel circuits is configured to drive a fourth light-emitting element of the plurality of fourth light-emitting elements, and wherein the plurality of first light-emitting elements comprises first light-emitting sub-elements; in the first direction, the first light-emitting sub-element does not overlap the fifth pixel circuit, and the first light-emitting sub-element does not overlap a connection line between two adjacent fifth pixel circuits of the fifth pixel circuits; and in the first direction, an anode of the first light-emitting sub-element at least partially overlaps the compensation structure.

2 . The display panel of claim 1 , wherein the pixel circuits are disposed in the second display region.

3 . The display panel of claim 2 , wherein a potential of the compensation structure is suspended.

4 . The display panel of claim 2 , wherein a display signal is transmitted in the compensation structure.

5 . The display panel of claim 4 , further comprising a transparent signal transmission line, and the transparent signal transmission line is disposed between a film in which the anode is located and a film in which the compensation structure is located; and
a pixel circuit of the pixel circuits is electrically connected to the anode via the transparent signal transmission line and the compensation structure.

6 . The display panel of claim 5 , wherein the first display region comprises a first display sub-region located closer to a side of the second display region; and
the pixel circuit is electrically connected to an anode of a light-emitting element in the first display sub-region via the transparent signal transmission line and the compensation structure, or wherein the first display region comprises a first display sub-region located closer to a side of the second display region and a second display sub-region located on a side of the first display sub-region facing away from the second display region; the transparent signal transmission line comprises a first transparent signal transmission line and a second transparent signal transmission line; the pixel circuit is electrically connected to an anode of a light-emitting element in the first display sub-region via the first transparent signal transmission line; the pixel circuit is electrically connected to an anode of a light-emitting element in the second display sub-region via the second transparent signal transmission line and the compensation structure; and the anode of the light-emitting element in the first display sub-region at least partially overlaps the compensation structure in the first direction.

7 . The display panel of claim 2 , wherein the second display region comprises a third display sub-region and a fourth display sub-region;
the third display sub-region surrounds at least part of the first display region, and the fourth display sub-region surrounds at least part of the third display sub-region; the third display sub-region comprises a plurality of second light-emitting elements, and the fourth display sub-region comprises a plurality of third light-emitting elements; the pixel circuits comprises first pixel circuits and second pixel circuits, the first pixel circuits are disposed in the third display sub-region, and the second pixel circuits are disposed in the fourth display sub-region; and a first pixel circuit of the first pixel circuits is configured to drive a second light-emitting element of the plurality of second light-emitting elements and a first light-emitting element of the plurality of first light-emitting elements, and a second pixel circuit of the second pixel circuits is configured to drive a third light-emitting element of the plurality of third light-emitting elements.

8 . The display panel of claim 1 , further comprising a non-display region, wherein the non-display region surrounds at least part of the second display region, and the second display region comprises a plurality of fourth light-emitting elements;
wherein the pixel circuits comprise third pixel circuits and fourth pixel circuits, a third pixel circuit of the third pixel circuits is configured to drive a first light-emitting element of the plurality of first light-emitting elements to emit light, and a fourth pixel circuit of the fourth pixel circuits is configured to drive a fourth light-emitting element of the plurality of fourth light-emitting elements to emit light; and wherein at least part of the third pixel circuits are disposed in the non-display region, and the fourth pixel circuits are disposed in the second display region.

9 . The display panel of claim 1 , wherein the anode covers the compensation structure in the first direction.

10 . The display panel of claim 1 , wherein a compensation film of the at least one layer of compensation film comprises a metal compensation film.

11 . The display panel of claim 10 , wherein the pixel circuit comprises at least one metal layer; and
the metal layer in the pixel circuit and the metal compensation film are disposed in a same layer.

12 . The display panel of claim 11 , wherein the at least one layer of compensation film comprises a first compensation film and a second compensation film, and the second compensation film is located on a side of the first compensation film facing away from the substrate;
the pixel circuit comprises at least a first metal layer and a second metal layer, and the second metal layer is located on a side of the first metal layer facing away from the substrate; and the first compensation film and the first metal layer are disposed in a same layer, and the second compensation film and the second metal layer are disposed in a same layer.

13 . The display panel of claim 12 , wherein the at least one layer of compensation film further comprises a third compensation film, and the third compensation film is disposed between the first compensation film and the second compensation film;
the pixel circuit further comprises a capacitor substrate layer, and the capacitor substrate layer is disposed between the first metal layer and the second metal layer; and the third compensation film and the capacitor substrate layer are disposed in a same

Assignees

• Wuhan Tianma Micro Electronics Co Ltd

Inventors

• Wang Lei
• Mu Pengcheng
• Wang Meihong
• Dai Hao
• Ma Yangzhao

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10D86/481

  integrated with passive devices, e.g. auxiliary capacitors · CPC title

• H10D86/60

  wherein the TFTs are in active matrices · CPC title

• H10H20/8581

  characterised by their material · CPC title

• H10H20/857

  Interconnections, e.g. lead-frames, bond wires or solder balls · CPC title