Display panel and display apparatus

Patent metadata

Field	Value
Publication number	US-12041822-B2
Application number	US-202017600556-A
Country	US
Kind code	B2
Filing date	Nov 20, 2020
Priority date	Nov 28, 2019
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

A display panel having a pixel region includes a base substrate, a plurality of pixel circuits located in the pixel region, and a plurality of light-emitting structures located in the pixel region. Each pixel circuit includes a storage capacitor and a plurality of transistors. The light-emitting structures are configured to emit light of at least three primary colors. Each light-emitting structure includes a light-emitting device. Each pixel circuit is coupled to the light-emitting device in a corresponding light-emitting structure, and a surface of the light-emitting device proximate to the base substrate is a light exit surface. Among the light-emitting structures, an orthogonal projection of an effective light-emitting region, on the base substrate, of the light-emitting device in a first light-emitting structure with a shortest light-emitting wavelength, is spaced apart from orthogonal projections of all storage capacitors of the plurality of pixel circuits on the base substrate.

First claim

What is claimed is:

1. A display panel having a pixel region, the display panel comprising:
a base substrate;
a plurality of pixel circuits disposed on the base substrate and located in the pixel region, each pixel circuit including a storage capacitor and a plurality of transistors; and
a plurality of light-emitting structures disposed in the pixel region and located on a side of the plurality of pixel circuits away from the base substrate; the plurality of light-emitting structures being configured to emit light of at least three primary colors; each light-emitting structure including a light-emitting device, each pixel circuit being coupled to the light-emitting device in a corresponding light-emitting structure, and a surface of the light-emitting device proximate to the base substrate being a light exit surface, wherein
among the plurality of light-emitting structures, an orthogonal projection of an effective light-emitting region, on the base substrate, of the light-emitting device in a first light-emitting structure with a shortest light-emitting wavelength, is spaced apart from orthogonal projections of all storage capacitors of the plurality of pixel circuits on the base substrate;
an orthogonal projection of the storage capacitor, on the base substrate, of any other pixel circuit in the plurality of pixel circuits other than a first pixel circuit coupled to the light-emitting device in the first light-emitting structure, is at least partially overlapped with at least one orthogonal projection of at least one effective light-emitting region, on the base substrate, of at least one light-emitting device in at least one of the plurality of light-emitting devices other than the first light-emitting structure, wherein the orthogonal projection of the storage capacitor, on the base substrate, of the any other pixel circuit in the plurality of pixel circuits other than the first pixel circuit, is located within a range of an orthogonal projection of an effective light-emitting region, on the base substrate, of the light-emitting device in one of the plurality of light-emitting structures other than the first light-emitting structure; and
an orthogonal projection of the storage capacitor of the first pixel circuit on the base substrate, is located within the range of the orthogonal projection of the effective light-emitting region, on the base substrate, of the light-emitting device in the one of the plurality of light-emitting structures other than the first light-emitting structure.

2. The display panel according to claim 1 , wherein the pixel region includes a non-light-emitting region, a first light-emitting region, and a second light-emitting region; the first light-emitting region is located between the non-light-emitting region and the second light-emitting region;
the plurality of light-emitting structures further include a second light-emitting structure and a third light-emitting structure in addition to the first light-emitting structure; the plurality of pixel circuits further include a second pixel circuit and a third pixel circuit in addition to the first pixel circuit, the second pixel circuit being coupled to the light-emitting device in the second light-emitting structure, and the third pixel circuit being coupled to the light-emitting device in the third light-emitting structure;
the first light-emitting structure and the second light-emitting structure are located in the second light-emitting region, and the third light-emitting structure is located in the first light-emitting region; the storage capacitor of the first pixel circuit is located in the first light-emitting region; and
the plurality of transistors of each of the first pixel circuit, the second pixel circuit, and the third pixel circuit are located in the non-light-emitting region.

3. The display panel according to claim 2 , wherein the storage capacitor of the second pixel circuit is located in the second light-emitting region, and the storage capacitor of the third pixel circuit is located in the first light-emitting region.

4. The display panel according to claim 2 , wherein both the storage capacitor of the second pixel circuit and the storage capacitor of the third pixel circuit are located in the first light-emitting region.

5. The display panel according to claim 2 , wherein the plurality of light-emitting structures further include a fourth light-emitting structure, the first light-emitting structure, the second light-emitting structure, and the fourth light-emitting structure being configured to emit light of three primary colors, and the third light-emitting structure being configured to emit white light; the plurality of pixel circuits further include a fourth pixel circuit, the fourth pixel circuit being coupled to the light-emitting device in the fourth light-emitting structure; and
the fourth light-emitting structure is located in the second light-emitting region, and the plurality of transistors of the fourth pixel circuit are located in the non-light-emitting region.

6. The display panel according to claim 5 , wherein the storage capacitor of the third pixel circuit is located in the first light-emitting region; and
the storage capacitor of the second pixel circuit and the storage capacitor of the fourth pixel circuit are located in the second light-emitting region.

7. The display panel according to claim 5 , wherein the storage capacitor of the second pixel circuit, the storage capacitor of the third pixel circuit, and the storage capacitor of the fourth pixel circuit are located in the first light-emitting region.

8. The display panel according to claim 1 , wherein the pixel region includes a non-light-emitting region, a first light-emitting region, and a second light-emitting region; the first light-emitting region is located between the non-light-emitting region and the second light-emitting region;
the plurality of light-emitting structures further include a second light-emitting structure and a third light-emitting structure in addition to the first light-emitting structure; the plurality of pixel circuits further include a second pixel circuit and a third pixel circuit in addition to the first pixel circuit, the second pixel circuit being coupled to the light-emitting device in the second light-emitting structure, and the third pixel circuit being coupled to the light-emitting device in the third light-emitting structure;
the first light-emitting structure is located in the first light-emitting region, and both the second light-emitting structure and the third light-emitting structure are located in the second light-emitting region; the storage capacitor of the first pixel circuit, the storage capacitor of the second pixel circuit, and the storage capacitor of the third pixel circuit are located in the second light-emitting region; and
the plurality of transistors of each of the first pixel circuit, the second pixel circuit, and the third pixel circuit are located in the non-light-emitting region.

9. The display panel according to claim 8 , wherein the plurality of light-emitting structures further include a fourth light-emitting structure, the first light-emitting structure, the second light-emitting structure, the third light-emitting structure being configured to emit light of three primary colors, and the fourth light-emitting structure being configured to emit white light; the plurality of pixel circuits further include a fourth pixel circuit, the fourth pixel circuit being coupled to the light-emitting device in the fourth light-emitting structure; and
the fourth light-emitting structure and the storage capacitor of the fourth pixel circuit are located in the second light-emitting region; the plurality of transistors of the f

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Wang Dongfang
• Wang Qinghe

Classifications

• H10K59/38

  comprising colour filters or colour changing media [CCM] · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/126

  Shielding, e.g. light-blocking means over the TFTs · CPC title

• H10K59/1216 Primary

  the pixel elements being capacitors · CPC title

• H10K59/351 Primary

  comprising more than three subpixels, e.g. red-green-blue-white [RGBW] · CPC title