Display substrate and display device

Patent metadata

Field	Value
Publication number	US-12457867-B2
Application number	US-202117928408-A
Country	US
Kind code	B2
Filing date	Mar 17, 2021
Priority date	Mar 17, 2021
Publication date	Oct 28, 2025
Grant date	Oct 28, 2025

Abstract

A display substrate and a display device are provided. The display substrate includes a base substrate, a plurality of signal lines, a first power line, at least one first detection signal line and at least one second detection signal line. At a side close to a bending area and outside an area where an orthographic projection of the first power line on a substrate surface of the base substrate, orthographic projections of the at least one first detection signal line and the at least one second detection signal line on the substrate surface of the base substrate have no overlap with orthographic projections of the plurality of signal lines on the substrate surface of the base substrate. The display substrate can improve the antistatic capability of the second detection signal line and improve the product yield.

First claim

What is claimed is:

1. A display substrate, comprising:
a base substrate comprising a display area and a peripheral area surrounding the display area, wherein the display area comprises a pixel array comprising a plurality of sub-pixels, and wherein the peripheral area comprises a bending area located at a first side of the display area, and a shift register located at at least one of a second side or a third side of the display area, the first side is adjacent to the second side and the third side,
a plurality of signal lines, wherein one end of each of the plurality of signal lines is led out from the bending area, and the other end of each of the plurality of signal lines is connected with the shift register,
a first power line led out from the bending area and routed around the display area,
at least one first detection signal line arranged at at least one of a side where the shift register is located or a fourth side opposite to the first side of the display area, wherein a first end of the at least one first detection signal line is led out from the bending area, and
at least one second detection signal line arranged at at least one of the side where the shift register is located or the fourth side, wherein a first end of the at least one second detection signal line is led out from the bending area,
wherein at a side close to the bending area and outside an area where an orthographic projection of the first power line on a substrate surface of the base substrate is located, an orthographic projection of the at least one first detection signal line on the substrate surface of the base substrate has no overlap with orthographic projections of the plurality of signal lines on the substrate surface of the base substrate, and an orthographic projection of the at least one second detection signal line on the substrate surface of the base substrate has no overlap with the orthographic projections of the plurality of signal lines on the substrate surface of the base substrate.

2. The display substrate according to claim 1 , wherein at the first side of the display area, in the area where the orthographic projection of the first power line on the substrate surface of the base substrate is located, the orthographic projection of the at least one second detection signal line on the substrate surface of the base substrate overlaps with the orthographic projections of the plurality of signal lines on the substrate surface of the base substrate.

3. The display substrate according to claim 2 , wherein an area where the orthographic projection of the at least one second detection signal line on the substrate surface of the base substrate overlaps with the orthographic projections of the plurality of signal lines on the substrate surface of the base substrate is completely covered by the area where the orthographic projection of the first power line on the substrate surface of the base substrate is located.

4. The display substrate according to claim 1 , wherein at the first side of the display area, a second end of the at least one first detection signal line is connected in series with a second end of the at least one second detection signal line.

5. The display substrate according to claim 1 , wherein at the first side of the display area and in a direction perpendicular to the substrate surface of the base substrate, at least part of a film layer where the first power line is located is located between a film layer where the at least one second detection signal line is located and a film layer where the plurality of signal lines are located.

6. The display substrate according to claim 1 , wherein
at the side close to the bending area and outside the area where the orthographic projection of the first power line on the substrate surface of the base substrate is located, the plurality of signal lines are routed in parallel,
at least some of line segments of the at least one first detection signal line and at least some of line segments of the at least one second detection signal line are routed in parallel to the plurality of signal lines, and the at least one second detection signal line is located at a side of the at least one first detection signal line away from the plurality of signal lines.

7. The display substrate according to claim 1 , wherein
at the first side of the display area, the at least one second detection signal line comprises a plurality of first line segments respectively connected to the first end and a second end of the at least one second detection signal line, and the plurality of first line segments extend along a first direction,
in the area where the orthographic projection of the first power line on the substrate surface of the base substrate is located, orthographic projections of the plurality of first line segments on the substrate surface of the base substrate overlap with the orthographic projections of the plurality of signal lines on the substrate surface of the base substrate.

8. The display substrate according to claim 7 , wherein
an area where the orthographic projections of the plurality of first line segments on the substrate surface of the base substrate overlap with the orthographic projections of the plurality of signal lines on the substrate surface of the base substrate has a length in the first direction ranging from 220 microns to 260 microns.

9. The display substrate according to claim 7 , wherein
at the side close to the bending area and outside the area where the orthographic projection of the first power line on the substrate surface of the base substrate is located, the orthographic projections of the plurality of first line segments on the substrate surface of the base substrate also overlap with the orthographic projection of the at least one first detection signal line on the substrate surface of the base substrate.

10. The display substrate according to claim 7 , wherein
the at least one second detection signal line further comprises a plurality of second line segments, wherein one of the plurality of first line segments is connected with the first end of the at least one second detection signal line through one of the plurality of second line segments, another one of the plurality of first line segments is connected with the second end of the at least one second detection signal line through another one of the plurality of second line segments, and the plurality of second line segments are located between the plurality of first line segments and the bending area, wherein the plurality of second line segments are routed along a direction intersecting with the first direction,
the at least one first detection signal line comprises a plurality of third line segments respectively connected with the first end and the second end of the at least one first detection signal line, orthographic projections of the plurality of third line segments on the substrate surface of the base substrate overlap with the orthographic projections of the plurality of first line segments on the substrate surface of the base substrate, and the plurality of third line segments are routed and arranged in parallel with the plurality of second line segments,
the plurality of third line segments are located at a side of the plurality of second line segments close to the display area, and are located between the plurality of second line segments and the plurality of signal lines.

11. The display substrate according to claim 10 , wherein
in a routing direction perpendicular to the plurality of second line segments and the plurality of third line segments, the plurality of second line segments and the plurality of third line segments are routed in parallel with line segments of t

Assignees

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

Inventors

• Fan Cong
• Tong Kemeng
• He Fan
• Dong Xiangdan
• Wang Yu

Classifications

• G09G2310/0286

  Details of a shift registers arranged for use in a driving circuit · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2300/0426

  Layout of electrodes and connections · CPC title

• G09G3/3233

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

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title