Display panel and display device

Patent metadata

Field	Value
Publication number	US-12213355-B2
Application number	US-202117620371-A
Country	US
Kind code	B2
Filing date	Jan 6, 2021
Priority date	Jan 6, 2021
Publication date	Jan 28, 2025
Grant date	Jan 28, 2025

Abstract

A display panel is described that includes a light-transmitting area, a main display area, a first transition display area, and a first wiring area. The display panel further includes: a plurality of first light-emitting units, a plurality of first pixel driving circuits, a plurality of first signal lines, a plurality of second signal lines, and a plurality of third signal lines. The plurality of first light-emitting units are located in the light-transmitting area; the plurality of first pixel driving circuits are located in the first transition display area; the plurality of first signal lines extend in the second direction and are located in the first transition display area for providing a potential signal to the first pixel driving circuit.

First claim

What is claimed is:

1. A display panel, comprising:
a light-transmitting area, a main display area, a first transition display area, and a first wiring area, wherein the first transition display area is located on both sides of the light-transmitting area in a first direction, the first wiring area is located on a side of the first transition display area and the light-transmitting area in a second direction, the main display area is located on a side of the first wiring area away from the first transition display area and the light-transmitting area, and the first direction and the second direction intersect with each other;
a second transition display area adjacently arranged on a side of the first wiring area in the second direction;
a first light-emitting unit located in the light-transmitting area;
a second light-emitting unit located in the first wiring area;
a first pixel driving circuit located in the first transition display area for providing a driving current to the first light-emitting unit;
a second pixel driving circuit located in the second transition display area for providing a driving current to the second light-emitting unit;
a first signal line extending in the second direction, wherein at least a part of the first signal line is located in the first transition display area for providing a potential signal to the first pixel driving circuit;
a second signal line extending in the second direction, wherein at least a part of the second signal line is located in the main display area for providing a potential signal to the pixel driving circuit in the main display area; and
a third signal line extending in the first direction, wherein at least a part of the third signal line is located in the first wiring area, and the third signal line is connected to the first signal line and the second signal line through via holes, respectively.

2. The display panel of claim 1 , wherein the second signal line is used to provide a potential signal to a pixel driving circuit in the main display area that is located in a same sub-pixel column as the first light-emitting unit.

3. The display panel of claim 1 , wherein the second transition display area is located between the first wiring area and the first transition display area as well as the light-transmitting area, or the second transition display area is located between the first wiring area and the main display area.

4. The display panel of claim 1 , wherein the second light-emitting unit and the second pixel driving circuit connected thereto are located in a same sub-pixel column.

5. The display panel of claim 4 , wherein the second pixel driving circuit and the second light-emitting unit are provided in plural, and each of the second pixel driving circuits is spaced apart from a corresponding second light-emitting unit connected thereto by a same number of sub-pixel rows in the second direction.

6. The display panel of claim 1 , further comprising a first sub-pixel located in the second transition display area, and the first sub-pixel comprising: a third light-emitting unit; and a third pixel driving circuit for providing a driving current to the third light-emitting unit.

7. The display panel of claim 6 , further comprising a second sub-pixel located in the first transition display area, and the second sub-pixel comprising:
a fourth light-emitting unit; and
a fourth pixel driving circuit for providing a driving current to the fourth light-emitting unit;
wherein the fourth pixel driving circuit and the first pixel driving circuit are located in different columns.

8. The display panel of claim 1 , wherein the first light-emitting unit and the first pixel driving circuit are provided in plural, the first pixel driving circuit and the first light-emitting unit connected thereto are located in a same row, and each of the first pixel driving circuits is spaced apart from the first light-emitting unit connected thereto by a same amount of sub-pixel columns in the first direction.

9. The display panel of claim 1 , further comprising:
a base substrate;
a first conductive layer provided on a side of the base substrate;
a second conductive layer provided on a side of the first conductive layer facing away from the base substrate; and
a third conductive layer provided on a side of the second conductive layer facing away from the base substrate, wherein at least a part of the third conductive layer is used to form the first signal line and the second signal line.

10. The display panel of claim 9 , wherein:
the first signal line, the second signal line, and the third signal line are provided in plural, each of the third signal lines is connected between a corresponding first signal line and a corresponding second signal line, and a plurality of the third signal lines comprise a plurality of first sub-signal lines and a plurality of second sub-signal lines;
at least a part of the first conductive layer is used to form the first sub-signal lines;
at least a part of the second conductive layer is used to form the second sub-signal lines; and
orthographic projections of the first sub-signal lines on the base substrate and orthographic projections of the second sub-signal lines on the base substrate are alternately distributed in the second direction.

11. The display panel of claim 9 , wherein:
the first signal line, the second signal line, and the third signal line are provided in plural, and each of the third signal lines is connected between a corresponding first signal line and a corresponding second signal line;
the third signal line is formed by at least a part of the first conductive layer; and
orthographic projections of the third signal lines on the base substrate are sequentially distributed at intervals in the second direction.

12. The display panel of claim 9 , wherein:
the first signal line, the second signal line, and the third signal line are provided in plural, and each of the third signal lines is connected between a corresponding first signal line and a corresponding second signal line;
the third signal line is formed by at least a part of the second conductive layer; and
orthographic projections of the third signal lines on the base substrate are sequentially distributed at intervals in the second direction.

13. The display panel of claim 9 , wherein:
the first pixel driving circuit comprises a driving transistor, and a capacitor connected to a gate of the driving transistor;
a part of the first conductive layer is used to form the gate of the driving transistor, and a part of the second conductive layer is used to form an electrode of the capacitor; and
the first signal line is used to provide a data signal to the driving transistor.

14. The display panel of claim 13 , further comprising:
a fourth conductive layer located on a side of the third conductive layer facing away from the base substrate, wherein at least a part of the fourth conductive layer is used to form an anode of the first light-emitting unit, and the fourth conductive layer further comprises:
a first connection line for connecting the second pixel driving circuit and an anode of the second light-emitting unit.

15. The display panel of claim 14 , further comprising:
a fifth transparent conductive layer located between the third conductive layer and the fourth conductive layer, wherein the fifth transparent conductive layer comprises a second connection line for connecting the first pixel driving circuit and the anode of the first light-emitting unit.

16. The display panel of claim 7 , wherein a pixel density of the main display

Assignees

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

Inventors

• Huang Yao
• Cheng Yudiao
• Liu Cong

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/131 Primary

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

• G09G3/3241 Primary

  the current through the light-emitting element being set using a data current provided by the data driver, e.g. by using a two-transistor current mirror · CPC title

• G09G3/3233

  with pixel circuitry controlling the current through the light-emitting element · CPC title

• H10K59/1216

  the pixel elements being capacitors · CPC title