Display substrate and display device

Patent metadata

Field	Value
Publication number	US-11968873-B2
Application number	US-202117502363-A
Country	US
Kind code	B2
Filing date	Oct 15, 2021
Priority date	Sep 26, 2019
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A display substrate and a display device. The display substrate includes a first display area and a second display area. A light transmittance of the second display area is lower than a light transmittance of the first display area. Among the sub-pixel groups of each pixel unit in the first display area, first electrodes of sub-pixels of sub-pixel groups of the pixel unit are electrically connected to corresponding pixel circuits through first connecting portions, and first electrodes of sub-pixels of the other sub-pixel groups of the pixel unit are electrically connected to corresponding pixel circuits through second connecting portions, the first connecting portions and the second connecting portions are disposed in different layers, and the second connecting portion and a plurality of first electrodes of a plurality of sub-pixels of the sub-pixel groups of the pixel unit are disposed in different layers.

First claim

What is claimed is:

1. A display substrate comprises:
a first display area comprising a plurality of pixel units, and each of the plurality of pixel units comprising at least three sub-pixel groups emitting light of at least three different colors;
each of the sub-pixel groups comprising at least one sub-pixel, and each sub-pixel comprising a first electrode, a light emitting structure disposed on the first electrode and a second electrode disposed on the light emitting structure; and
a second display area being adjacent to the first display area, a light transmittance of the second display area being lower than a light transmittance of the first display area; the second display area being provided with a plurality of pixel circuits for driving the sub-pixel groups;
wherein among the sub-pixel groups of each pixel unit in the first display area, at least one first electrode of at least one sub-pixel of at least one sub-pixel group of the pixel unit is electrically connected to at least one corresponding pixel circuit through at least one first connecting portion, and at least one first electrode of at least one sub-pixel of at least one of the other sub-pixel groups of the pixel unit is electrically connected to at least one corresponding pixel circuit through at least one second connecting portion, the at least one first connecting portion and the at least one second connecting portion are disposed in different layers, and the at least one second connecting portion and a plurality of first electrodes of a plurality of sub-pixels of the sub-pixel groups of the pixel unit are disposed in different layers.

2. The display substrate of claim 1 , wherein each of the sub-pixel groups comprises at least two sub-pixels, and a plurality of first electrodes of a plurality of sub-pixels in each of the sub-pixel groups are electrically connected in sequence.

3. The display substrate of claim 1 , wherein the plurality of pixel units form a plurality of pixel unit groups, and the plurality of pixel units in each of the pixel unit groups arranged along a first direction, and the plurality of pixel unit groups are arranged along a second direction;
the first display area comprises a first side and a second side opposite to the first side, and a direction from the first side to the second side is the first direction.

4. The display substrate of claim 3 , wherein among the plurality of pixel units in each of the pixel unit groups, at least one pixel unit adjacent to the first side is a first target pixel unit, a distance between the first target pixel unit adjacent to the first side and the first side is smaller than a distance between any of other pixel units and the first side; and/or, among the plurality of pixel units in each of the pixel unit groups, at least one pixel unit adjacent to the second side is a second target pixel unit, a distance between the second target pixel unit adjacent to the second side and the second side is smaller than a distance between any of other pixel units and the second side.

5. The display substrate of claim 4 , wherein at least one first electrode of at least one sub-pixel of at least one sub-pixel group in the first target pixel unit is electrically connected to at least one corresponding pixel circuit through at least one first connecting portion; at least one first electrode of at least one sub-pixel of at least one sub-pixel group in the second target pixel unit is electrically connected to at least one corresponding pixel circuit through at least one first connecting portion.

6. The display substrate of claim 4 , wherein in the pixel unit group, one or two pixel units adjacent to the first side are the first target pixel units, and/or, one or two pixel units adjacent to the second side are the second target pixel units.

7. The display substrate of claim 6 , wherein the pixel unit group comprises six pixel units, the number of the first target pixel units adjacent to the first side is two, and the number of the second target pixel units adjacent to the second side is two.

8. The display substrate of claim 4 , wherein in the first display area, a plurality of first electrodes of a plurality of sub-pixels of the sub-pixel groups in the first target pixel unit are electrically connected to a plurality of corresponding pixel circuits through a plurality of first connecting portions, a plurality of first electrodes of a plurality of sub-pixels of the sub-pixel groups in the second target pixel unit are electrically connected to a plurality of corresponding pixel circuits through a plurality of first connecting portions.

9. The display substrate of claim 4 , wherein the pixel unit comprises a first sub-pixel group emitting light of a first color, a second sub-pixel group emitting light of a second color and a third sub-pixel group emitting light of a third color; the first sub-pixel group comprises at least two sub-pixels emitting light of the first color, the second sub-pixel group comprises at least two sub-pixels emitting light of the second color, and the third sub-pixel group comprises at least two sub-pixels emitting light of the third color.

10. The display substrate of claim 9 , wherein the pixel unit group comprises two first target pixel units adjacent to the first side, and/or, the pixel unit group comprises two second target pixel units adjacent to the second side; wherein among the two first target pixel units adjacent to the first side or among the two second target pixel units adjacent to the second side, the first/second target pixel unit adjacent to the second display area is a first pixel unit, and the other first/second target pixel unit is a second pixel unit.

11. The display substrate of claim 10 , wherein the pixel unit comprises a plurality of sub-pixel units, and each of the sub-pixel units comprises a sub-pixel emitting light of a first color, a sub-pixel emitting light of a second color and a sub-pixel emitting light of a third color, and three sub-pixels in each of the sub-pixel units are arranged in a triangle shape.

12. The display substrate of claim 11 , wherein each of the plurality of sub-pixel units comprises a first area, a second area and a third area, the first area and the second area are arranged in a second direction, the third area and the first area are arranged in the first direction, and a first central axis of a total area of the first area and the second area along the first direction substantially coincides with a second central axis of the third area along the first direction; the sub-pixel emitting light of the first color is disposed in the first area, the sub-pixel emitting light of the second color is disposed in the second area, and the sub-pixel emitting light of the third color is disposed in the third area;
among two adjacent sub-pixel units in the second direction, the third area of one sub-pixel unit is disposed on a third side of the first area of the sub-pixel unit, and the third area of the other sub-pixel unit is disposed on a fourth side of the first area of the other sub-pixel unit, the third side is opposite to the fourth side;
among the plurality of sub-pixel units arranged in the first direction, the third area of each of the plurality of sub-pixel units is disposed on a third/fourth side of the first area.

13. The display substrate of claim 12 , wherein the first connecting portion corresponding to the second sub-pixel group emitting light of the first color in the second pixel unit is disposed on a side of the first sub-pixel group emitting light of the first color in the first pixel unit facing away from the second sub-pixel group emitting light of the second color in the first pixel un

Assignees

• Kunshan Govisionox Optoelectronics Co Ltd

Inventors

• Lou Junhui

Classifications

• H10K59/65

  OLEDs integrated with inorganic image sensors · CPC title

• H10K59/131

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

• H10K59/353 Primary

  characterised by the geometrical arrangement of the RGB subpixels · CPC title

• H10K59/121 Primary

  characterised by the geometry or disposition of pixel elements · CPC title

• H10K50/828

  Transparent cathodes, e.g. comprising thin metal layers · CPC title