Light-emitting diode display panel and light-emitting diode display device

Patent metadata

Field	Value
Publication number	US-11514845-B2
Application number	US-202117445182-A
Country	US
Kind code	B2
Filing date	Aug 16, 2021
Priority date	May 6, 2021
Publication date	Nov 29, 2022
Grant date	Nov 29, 2022

Abstract

Disclosed are a display panel and a display device. The display panel includes, in part, a base substrate, multiple light-emitting elements, multiple pixel circuits, and at least one driver circuit, where the base substrate, multiple light-emitting elements, multiple pixel circuits, and the driver circuit are located on a side of the base substrate and located in a display area. The driver circuit is configured to transmit drive signals to the multiple pixel circuits. The multiple pixel circuits are configured to drive the multiple light-emitting elements. The multiple light-emitting elements include multiple light-emitting element rows. Each of the multiple light-emitting element rows extends along a first direction. The multiple light-emitting element rows are arranged along a second direction.

First claim

What is claimed is:

1. A display panel, comprising a display area;
wherein the display panel further comprises:
a base substrate;
contact electrodes; and
a plurality of light-emitting elements, a plurality of pixel circuits and at least one driver circuit, wherein the plurality of light-emitting elements, the plurality of pixel circuits and the at least one driver circuit are located on a side of the base substrate and located in the display area, wherein the at least one driver circuit is configured to transmit drive signals to the plurality of pixel circuits, and wherein a pixel circuit of the plurality of pixel circuits is configured to drive a light-emitting element of the plurality of light-emitting elements;
wherein the plurality of light-emitting elements comprise a plurality of light-emitting element rows, wherein each of the plurality of light-emitting element rows extends in a first direction, wherein the plurality of light-emitting element rows are arranged in a second direction, wherein the first direction and the second direction intersect and each of the first direction and the second direction is parallel to a plane where the base substrate is located;
wherein the at least one driver circuit comprises a plurality of shift register circuits disposed in cascade, wherein each of the plurality of shift register circuits is located between adjacent light-emitting element rows of the plurality of light-emitting element rows;
wherein a light-emitting element of the plurality of light-emitting elements is bonded to a contact electrode of the contact electrodes; and
wherein a contact electrode of the contact electrodes does not overlap with the pixel circuit.

2. The display panel of claim 1 , wherein the plurality of light-emitting elements are uniformly arranged.

3. The display panel of claim 1 , wherein the plurality of light-emitting elements do not overlap with the plurality of pixel circuits; and
wherein the pixel circuit comprises a plurality of transistors.

4. The display panel of claim 1 , wherein the plurality of light-emitting elements do not overlap with the at least one driver circuit.

5. The display panel of claim 1 , wherein the at least one driver circuit comprises a scan driving circuit, and wherein the scan driving circuit comprises a plurality of scan shift register circuits disposed in cascade, and wherein the scan shift register circuit is located between adjacent light-emitting element rows of the plurality of light-emitting element rows;
wherein each of the plurality of scan shift register circuits comprises a first latch module, a logic module and a first buffer module and the first latch module, the logic module and the first buffer module are arranged in the first direction.

6. The display panel of claim 1 , wherein the at least one driver circuit comprises a light-emitting control driver circuit, wherein the light-emitting control driver circuit comprises a plurality of light-emitting control shift register circuits disposed in cascade, and wherein each of the plurality of light-emitting control shift register circuits is located between adjacent light-emitting element rows;
wherein each of the plurality of light-emitting control shift register circuits comprises a second latch module and a second buffer module, wherein the second latch module and the second buffer module are arranged in the first direction.

7. The display panel of claim 1 , wherein at least one light-emitting element row group is provided with two shift register circuits disposed in cascade, and wherein the at least one light-emitting element row group each comprises two light-emitting element rows disposed adjacent to each other in the second direction;
wherein the at least one driver circuit comprises a scan driver circuit and a light-emitting control driver circuit, wherein the scan driver circuit comprises a plurality of scan shift register circuits disposed in cascade, and wherein the light-emitting control driver circuit comprises a plurality of light-emitting control shift register circuits disposed in cascade;
wherein at least two light-emitting element row groups are provided with two scan shift register circuits disposed in cascade; and
wherein at least one light-emitting element row group is provided with two light-emitting control shift register circuits disposed in cascade.

8. The display panel of claim 1 , wherein at least two shift register circuits are located in different light-emitting element row groups, wherein the different light-emitting element row groups each comprises two light-emitting element rows disposed adjacent to each other along the second direction.

9. The display panel of claim 1 , wherein the plurality of shift register circuits disposed in cascade comprises odd-numbered shift register circuits and even-numbered shift register circuits;
wherein the odd-numbered shift register circuits are disposed along the second direction, and wherein the even-numbered shift register circuits are disposed along the second direction; and
wherein the odd-numbered shift register circuits and the even-numbered shift register circuits are sequentially disposed in the first direction;
wherein each shift register circuit of the plurality of shift register circuits disposed in cascade comprises at least a latch module and a buffer module;
wherein along the first direction, a latch module of the odd-numbered shift register circuit is located on a side of a buffer module of the odd-stage number of shift register circuit facing the even-numbered shift register circuits, and a latch module of the even-numbered shift register circuit is located on a side of a buffer module of the even-numbered shift register circuit facing the odd-stage shift register circuit.

10. The display panel of claim 1 , wherein each shift register circuit of the plurality of shift register circuits disposed in cascade comprises at least two shift register circuit modules, wherein two adjacent shift register circuit modules are connected through a trace;
wherein the at least two shift register circuit modules each is located among four light-emitting elements disposed adjacent to each other in a same light-emitting element row group, and wherein the same light-emitting element row group comprises two light-emitting element rows disposed adjacent to each other in the second direction; and
wherein a plurality of data lines extending along the second direction, wherein each of the plurality of data lines comprises a winding part, wherein the winding part is adjacent to the at least two shift register circuit modules, and wherein the winding part does not overlap with the at least two shift register circuit modules along a direction perpendicular to the base substrate.

11. The display panel of claim 1 , further comprising a plurality of driver circuits, wherein the plurality of driver circuits are sequentially disposed in the first direction;
wherein the plurality of driver circuits comprise scan driver circuits and light-emitting control driver circuits, and the scan driver circuits and the light-emitting control driver circuits are alternately disposed along the first direction.

12. The display panel of claim 1 , further comprising a plurality of data lines and a plurality of scan lines which are located on a side of the base substrate and located in the display area, wherein each of the plurality of data lines extends in the second direction and wherein the plurality of data lines are arranged in the first direction, and wherein each of the plurality of scan lines extends in the first direction and the plurality of scan lines are arranged in the second direction.

Assignees

• Hubei Yangtze Ind Innovation Center Of Advanced Display Co Ltd

Inventors

• Dai Wenjun
• Xing Liang
• Wu Tianyi

Classifications

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G2300/0408

  Integration of the drivers onto the display substrate · CPC title

• G09G2310/0267

  Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays · CPC title

• G09G3/32 Primary

  semiconductive, e.g. using light-emitting diodes [LED] · CPC title

• G09G2310/0291

  Details of output amplifiers or buffers arranged for use in a driving circuit · CPC title