Display substrate, liquid crystal display panel and display device

Patent metadata

Field	Value
Publication number	US-12164205-B2
Application number	US-202117768824-A
Country	US
Kind code	B2
Filing date	Apr 27, 2021
Priority date	Apr 27, 2021
Publication date	Dec 10, 2024
Grant date	Dec 10, 2024

Abstract

Disclosed are a display substrate, a liquid crystal display panel ( 100 ) and a display device. The display substrate ( 9 ) includes: a base substrate ( 1 ), a plurality of sub-pixels arranged in an array on the base substrate, a plurality of data lines (D) extending in a first direction (X), a plurality of gate lines (G) extending in a second direction (Y), and a common electrode ( 2 ) arranged in a minimum area enclosed by the data lines and the gate lines; wherein the minimum area includes two sub-pixels, the common electrode includes a main electrode ( 21 ) with strip-shaped which is arranged at the junction of the two sub-pixels and a plurality of branch electrodes ( 22 ) with strip-shaped which are symmetrically distributed on two sides of the main electrode, and the extending directions of a part of the plurality of branch electrodes arranged on a same side of the main electrode are identical.

First claim

What is claimed is:

1. A display substrate, comprising:
a base substrate;
a plurality of sub-pixels arranged on the base substrate in an array;
a plurality of data lines extending in a first direction;
a plurality of gate lines extending in a second direction;
and a common electrode arranged in a minimum area enclosed by the plurality of data lines and the plurality of gate lines; wherein
the minimum area comprises two sub-pixels;
the common electrode comprises:
a main electrode with strip-shaped, and the main electrode is arranged at a junction of the two sub-pixels; and
a plurality of branch electrodes with strip-shaped, and the plurality of branch electrodes are symmetrically distributed on two sides of the main electrode;
wherein extending directions of a part of the plurality of branch electrodes are identical, the part of the plurality of branch electrodes are arranged on a same side of the main electrode;
wherein the display substrate further comprises a first connecting part connected between main electrodes of two adjacent common electrodes in the first direction, and a width of the first connecting part in the second direction is less than widths of the main electrodes of the two adjacent common electrodes in the second direction; and
wherein the display substrate further comprises a second connecting part arranged between two adjacent minimum areas in the second direction, and the second connecting part is connected with branch electrodes corresponding to the two adjacent minimum areas.

2. The display substrate according to claim 1 , wherein:
in the minimum area, the display substrate further comprises pixel electrodes with block-shaped, and the pixel electrodes are between the base substrate and the common electrode,
a quantity of the pixel electrodes is two, the pixel electrodes are in the sub-pixels respectively; and
the main electrode and the two pixel electrodes are at least partially overlapped.

3. The display substrate according to claim 1 , wherein:
the plurality of sub-pixels comprise at least two rows of sub-pixels, two gate lines are arranged between two adjacent rows of sub-pixels in the at least two rows of sub-pixels, one of the two gate lines is coupled with one row of the two adjacent rows of sub-pixels, and other one of the two gate lines is coupled with other row of the two adjacent rows of sub-pixels.

4. The display substrate according to claim 2 , wherein:
the display substrate further comprises a first switch unit and a second switch unit in the minimum area;
the pixel electrodes comprise a first sub-pixel electrode corresponding to the first sub-pixel in the two sub-pixels and a second sub-pixel electrode corresponding to the second sub-pixel in the two sub-pixels;
wherein a gate of the first switch unit is coupled with a first gate line in the plurality of gate lines, a first electrode of the first switch unit is coupled with a target data line in the plurality of data lines, and a second electrode of the first switch unit is coupled with the first sub-pixel electrode, a gate of the second switch unit is coupled with a second gate line in the plurality of gate lines, a first electrode of the second switch unit is coupled with the target data line, and a second electrode of the second switch unit is coupled with the second sub-pixel electrode.

5. The display substrate according to claim 1 , wherein, a range of a width, extending in the second direction, of the main electrode is [2 μm, 11 μm].

6. The display substrate according to claim 1 , wherein, a range of an included angle between each of the plurality of branch electrodes and the main electrode is [5°, 20°].

7. A liquid crystal display panel, comprising:
an opposite substrate;
a display substrate arranged opposite to the opposite substrate; and
a liquid crystal layer arranged between the opposite substrate and the display substrate;
wherein the display substrate comprises:
a base substrate;
a plurality of sub-pixels arranged on the base substrate in an array;
a plurality of data lines extending in a first direction;
a plurality of gate lines extending in a second direction;
and a common electrode arranged in a minimum area enclosed by the plurality of data lines and the plurality of gate lines; wherein
the minimum area comprises two sub-pixels;
the common electrode comprises:
a main electrode with strip-shaped, and the main electrode is arranged at a junction of the two sub-pixels; and
a plurality of branch electrodes with strip-shaped, and the plurality of branch electrodes are symmetrically distributed on two sides of the main electrode;
wherein extending directions of a part of the plurality of branch electrodes are identical, the part of the plurality of branch electrodes are arranged on a same side of the main electrode;
wherein the display substrate further comprises a first connecting part connected between main electrodes of two adjacent common electrodes in the first direction, and a width of the first connecting part in the second direction is less than widths of the main electrodes of the two adjacent common electrodes in the second direction; and
wherein the display substrate further comprises a second connecting part arranged between two adjacent minimum areas in the second direction, and the second connecting part is connected with branch electrodes corresponding to the two adjacent minimum areas.

8. The liquid crystal display panel according to claim 7 , wherein, liquid crystal in the liquid crystal layer is negative liquid crystal.

9. The liquid crystal display panel according to claim 7 , wherein the opposite substrate comprises:
a plurality of color resistors;
a shading part surrounding the plurality of color resistors; and
an orthographic projection of the main electrode on the base substrate is completely covered by an orthographic projection of the shading part on the base substrate.

10. A display device, comprising:
the liquid crystal display panel according to claim 7 .

11. The liquid crystal display panel according to claim 7 , wherein
in the minimum area, the display substrate further comprises pixel electrodes with block-shaped, and the pixel electrodes are between the base substrate and the common electrode,
a quantity of the pixel electrodes is two, the pixel electrodes are in the sub-pixels respectively; and
the main electrode and the two pixel electrodes are at least partially overlapped.

12. The liquid crystal display panel according to claim 7 , wherein:
the plurality of sub-pixels comprise at least two rows of sub-pixels, two gate lines are arranged between two adjacent rows of sub-pixels in the at least two rows of sub-pixels, one of the two gate lines is coupled with one row of the two adjacent rows of sub-pixels, and other one of the two gate lines is coupled with other row of the two adjacent rows of sub-pixels.

13. The liquid crystal display panel according to claim 11 , wherein
the display substrate further comprises a first switch unit and a second switch unit in the minimum area;
the pixel electrodes comprise a first sub-pixel electrode corresponding to the first sub-pixel in the two sub-pixels and a second sub-pixel electrode corresponding to the second sub-pixel in the two sub-pixels;
wherein a gate of the first switch unit is coupled with a first gate line in the plurality of gate lines, a first electrode of the first switch unit is coupled with a target data line in the plurality of data lines, and a second electrode of the first switch unit is coupled with the first sub-pixel electrode, a gate of the second switch unit is coupled with a second gate line in

Assignees

• Wuhan Boe Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Huang Xiaoyu
• Jiang Peng
• Chen Xiaoxiao
• Guo Yuanhui
• Shi Xia
• Liu Jiantao

Classifications

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/13624

  having more than one switching element per pixel · CPC title

• G02F1/136213

  Storage capacitors associated with the pixel electrode · CPC title

• G02F1/134363

  for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS] · CPC title

• G02F1/136286 Primary

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