Display substrate and display panel

Patent metadata

Field	Value
Publication number	US-2018024686-A1
Application number	US-201715722837-A
Country	US
Kind code	A1
Filing date	Oct 2, 2017
Priority date	Jun 30, 2017
Publication date	Jan 25, 2018
Grant date	—

Abstract

A display substrate comprises a display region and a non-display region surrounding the display region and including at least one display signal line, at least one pressure sensor with two pressure signal output terminals, a first and a second pressure signal output lines electrically connected to two pressure signal output terminals of the corresponding pressure sensor. The first pressure signal output line includes at least one first and at least one second line sections, electrically connected by a first connecting section. The second pressure signal output line includes at least one third and at least one fourth line sections, electrically connected by a second connecting section. All line sections are in parallel to the display signal line. A first distance from the first and third line sections to the display signal line is greater than a second distance from the second and fourth line sections to the display signal line.

First claim

What is claimed is:

1 . A display substrate, comprising a display region and a non-display region surrounding the display region, wherein the non-display region includes:
at least one display signal line; at least one pressure sensor configured with two pressure signal output terminals; and a first pressure signal output line and a second pressure signal output line that correspond to each pressure sensor, and are electrically connected to the two pressure signal output terminals of the corresponding pressure sensor, respectively, wherein:
the first pressure signal output line includes at least one first line section and at least one second line section;
the first line section and the second line section are electrically connected by a first connecting section;
the second pressure signal output line includes at least one third line section and at least one fourth line section;
the third line section and the fourth line section are electrically connected by a second connecting section;
the first line section, the second line section, the third line section, and the fourth line section are configured in parallel to the display signal line;
the first line section and the third line section have a first distance to the display signal line;
the second line section and the fourth line section have a second distance to the display signal line; and
the first distance is greater than the second distance.

2 . The display substrate according to claim 1 , wherein:
a total length of all first line sections of the first pressure signal output line is equal to a total length of all third line sections of the second pressure signal output line; and a total length of all second line sections of the first pressure signal output line is equal to a total length of all fourth line sections of the second pressure signal output line.

3 . The display substrate according to claim 2 , wherein:
the first pressure signal output line includes a first number of first line sections and a first number of second line sections; the second pressure signal output line includes a second number of third line sections and a second number of fourth line sections; and the first number is equal to the second number.

4 . The display substrate according to claim 3 , wherein:
the first line sections, the second line sections, the third line sections, and the fourth line sections have an equal length.

5 . The display substrate according to claim 2 , wherein:
the first connecting sections and the second connecting sections are paired and crossed with each other, and arranged alternately.

6 . The display substrate according to claim 5 , wherein:
the ratio of a total length of the first connecting sections over the length of the first pressure signal output line is less than 1:10; and the ratio of a total length of the second connecting sections over the length of the second pressure signal output line is less than 1:10.

7 . The display substrate according to claim 5 , wherein:
a section length of the orthogonal projection of a first connecting section on the extension direction of the display signal line is equal to a section length of the orthogonal projection of the corresponding second connecting section on the extension direction of the display signal line.

8 . The display substrate according to claim 1 , wherein:
the first pressure signal output line includes a plurality of first line sections and a plurality of second line sections; and the second pressure signal output line includes a plurality of third line sections and a plurality of fourth line sections.

9 . The display substrate according to claim 1 , wherein:
a driver chip is configured in the non-display region; and the first pressure signal output line and the second pressure signal output line are electrically connected to the driver chip.

10 . The display substrate according to claim 9 , wherein:
each pressure sensor is independently connected to a separate first pressure signal output line and a separate second pressure signal output line; or the pressure sensor that is far away from the driver chip shares a portion of the first pressure signal output line with the pressure sensor that is close to the driver chip, and the pressure sensor that is far away from the driver chip shares a portion of the second pressure signal output line with the pressure sensor that is close to the driver chip.

11 . The display substrate according to claim 1 , wherein:
the display signal line includes at least one of a clock signal line, an inverted clock signal line, and a trigger signal line.

12 . The display substrate according to claim 11 , wherein:
cascaded shift registers are configured in the non-display region; the display signal line is electrically connected to the cascaded shift registers; and the pressure sensor is configured between two adjacent shift registers.

13 . The display substrate according to claim 1 , wherein:
the first line sections and the second line sections of the first pressure signal output line, the third line sections and the fourth line sections of the second pressure signal output line, and the display signal line is disposed in a first metal layer.

14 . The display substrate according to claim 13 , wherein:
the first connecting sections are disposed in the first metal layer; and the second connecting sections include at least a bridge portion in a second metal layer.

15 . The display substrate according to claim 13 , further including data lines, scanning lines, and pixel capacitors disposed in the display region, wherein:
the first metal layer includes the data lines; or the first metal layer includes the scanning lines; or the first metal layer includes first electrodes or second electrodes of the pixel capacitors.

16 . The display substrate according to claim 1 , wherein:
the pressure sensor is a bridge type pressure sensor or a semiconductor pressure sensor.

17 . The display substrate according to claim 16 , wherein:
each pressure sensor includes two bias voltage input terminals; and a first bias voltage input line and a second bias voltage input line corresponding to each pressure sensor are configured in the non-display region, and are electrically connected to the two bias voltage input terminals of the corresponding pressure sensor.

18 . A display panel, comprising a display substrate, wherein the display substrate includes a display region and a non-display region surrounding the display region, wherein the non-display region includes:
at least one display signal line; at least one pressure sensor configured with two pressure signal output terminals; and a first pressure signal output line and a second pressure signal output line that correspond to each pressure sensor, and are electrically connected to the two pressure signal output terminals of the corresponding pressure sensor, respectively, wherein:
the first pressure signal output line includes at least one first line section and at least one second line section;
the first line section and the second line section are electrically connected by a first connecting section;
the second pressure signal output line includes at least one third line section and at least one fourth line section;
the third line section and the fourth line section are electrically connected by a second connecting section;
the first line section, the second line section, the third line section, and the fourth line section are configured in parallel to the display signal li

Assignees

• Shanghai Tianma Microelectronics Co Ltd

Inventors

• Zhou Xingyao
• Leng Chuanli
• Liu Liang

Classifications

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G06F3/0414 Primary

  using force sensing means to determine a position · CPC title

• G09G3/36

  using liquid crystals · CPC title

• G02F1/136286

  Wiring, e.g. gate line, drain line · CPC title

• G09G3/3208

  organic, e.g. using organic light-emitting diodes [OLED] · CPC title