Display panel, display apparatus and control method thereof

Patent metadata

Field	Value
Publication number	US-2019369449-A1
Application number	US-201916428329-A
Country	US
Kind code	A1
Filing date	May 31, 2019
Priority date	Jun 1, 2018
Publication date	Dec 5, 2019
Grant date	—

Abstract

A display panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a first common electrode layer and a pixel electrode layer. The first common electrode layer is configured to receive a first common voltage signal to form a first electric field with the pixel electrode layer. The second substrate is disposed opposite to the first substrate, and includes a second common electrode layer. The second common electrode layer is configured to receive a second common voltage signal to form a second electric field with the pixel electrode layer. The liquid crystal layer is disposed between the first substrate and the second substrate.

First claim

What is claimed is:

1 . A display panel, comprising:
a first substrate, wherein the first substrate includes a first common electrode layer and a pixel electrode layer, and the first common electrode layer is configured to receive a first common voltage signal to form a first electric field with the pixel electrode layer; a second substrate disposed opposite to the first substrate, wherein the second substrate includes a second common electrode layer, and the second common electrode layer is configured to receive a second common voltage signal to form a second electric field with the pixel electrode layer; and a liquid crystal layer disposed between the first substrate and the second substrate.

2 . The display panel according to claim 1 , wherein the display panel has sub-pixel regions; and
the second common electrode layer is selected from a group consisting of: a second common electrode layer including a first plate-shaped electrode, a second common electrode layer including strip-shaped electrodes, a second common electrode layer including block-shaped electrodes each of which is located in a corresponding sub-pixel region, and a second common electrode layer including slit electrodes each of which is located in a corresponding sub-pixel region.

3 . The display panel according to claim 1 , wherein the display panel has sub-pixel regions;
the first common electrode layer is disposed at a side of the pixel electrode layer facing away from the second common electrode layer; the first common electrode layer is selected from a group consisting of: a first common electrode layer including a second plate-shaped electrode, a first common electrode layer including strip-shaped electrodes, a first common electrode layer including block-shaped electrodes each of which is located in a corresponding sub-pixel region, and a first common electrode layer including slit electrodes each of which is located in a corresponding sub-pixel region; and the pixel electrode layer includes slit electrodes each of which is located in a corresponding sub-pixel region.

4 . The display panel according to claim 1 , wherein the display panel has sub-pixel regions;
the pixel electrode layer is disposed at a side of the first common electrode layer facing away from the second common electrode layer; the pixel electrode layer is selected from a group consisting of: a pixel electrode layer including block-shaped electrodes each of which is located in a corresponding sub-pixel region, and a pixel electrode layer including slit electrodes each of which is located in a corresponding sub-pixel region; and the first common electrode layer includes slit electrodes each of which is located in a corresponding sub-pixel region.

5 . The display panel according to claim 1 , wherein the display panel has sub-pixel regions;
the first common electrode layer and the pixel electrode layer are disposed in a same layer; the pixel electrode layer includes first comb electrodes, and each first comb electrode is located in a corresponding sub-pixel region; the first common electrode layer includes second comb electrodes, and each second comb electrode is located in a corresponding sub-pixel region; and teeth of first and second comb electrodes that are located in a same sub-pixel region are alternately arranged and spaced apart.

6 . The display panel according to claim 1 , wherein the first substrate further includes:
a first base substrate, wherein the first common electrode layer and the pixel electrode layer are disposed at a side of the first base substrate facing the liquid crystal layer; and a touch layer disposed at a side of the first base substrate facing away from the liquid crystal layer.

7 . The display panel according to claim 1 , wherein the first substrate further includes:
a first base substrate, wherein the first common electrode layer and the pixel electrode layer are disposed at a side of the first base substrate facing the liquid crystal layer; and a touch layer disposed between the first base substrate and one of the first common electrode layer and the pixel electrode layer closer to the first base substrate.

8 . The display panel according to claim 1 , wherein the second substrate further includes:
a second base substrate, wherein the second common electrode layer is disposed on a side of the second base substrate facing the liquid crystal layer; and a touch layer disposed on a side of the second base substrate facing away from the liquid crystal layer.

9 . The display panel according to claim 1 , wherein the second substrate further includes:
a second base substrate, wherein the second common electrode layer is disposed on a side of the second base substrate facing the liquid crystal layer; and a touch layer disposed between the second base substrate and the second common electrode layer.

10 . The display panel according to claim 1 , wherein the display panel has sub-pixel regions, and the first substrate further includes:
a first base substrate, wherein the first common electrode layer and the pixel electrode layer are disposed at a side of the first base substrate facing the liquid crystal layer; and thin film transistors disposed at the side of the first base substrate facing the liquid crystal layer, each thin film transistor is located in a corresponding sub-pixel region, and is electrically connected to a portion of the pixel electrode layer located in the sub-pixel region.

11 . A display apparatus, comprising:
the display panel according to claim 1 ; a controller electrically connected to the display panel, wherein the controller is configured to: monitor a usage state of the display panel in real time, generate a first control command in response to the display panel being in a first usage state, and generate a second control command in response to the display panel being in a second usage state; and a common voltage generating circuit electrically connected to the controller and the display panel, wherein the common voltage generating circuit is configured to: generate a first common voltage signal and a second common voltage signal, transfer the first common voltage signal to the first common electrode layer of the display panel in response to receiving the first control command, and transfer the second common voltage signal to the second common electrode layer of the display panel in response to receiving the second control command.

12 . The display apparatus according to claim 11 , wherein the common voltage generating circuit includes:
a main circuit electrically connected to the controller, wherein the main circuit is configured to: generate a first common voltage signal and a second common voltage signal, transfer the first common voltage signal in response to receiving the first control command, and transfer the second common voltage signal in response to receiving the second control command; a first common voltage output terminal electrically connected to the main circuit and the first common electrode layer of the display panel, wherein the first common voltage output terminal is configured to transfer the first common voltage signal to the first common electrode layer; and a second common voltage output terminal electrically connected to the main circuit and the second common electrode layer of the display panel, wherein the second common voltage output terminal is configured to transfer the second common voltage signal to the second common electrode layer.

13 . The display apparatus according to claim 11 , wherein the common voltage generating circuit includes:
a logic circuit electrically connected to th

Assignees

• Chongqing Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Qin Peng
• Zuo Cheng
• Dang Kangpeng
• Rao Yang
• Wang Bo
• Chen Hong
• Jiang Lihua
• Luo Zhongli

Classifications

• G09G3/3655 Primary

  Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors · CPC title

• G06F3/044

  by capacitive means · CPC title

• G09G3/36

  using liquid crystals · CPC title

• G02F1/1323 Primary

  Arrangements for providing a switchable viewing angle · CPC title

• G02F1/13624

  having more than one switching element per pixel · CPC title