Display panel and display terminal

Patent metadata

Field	Value
Publication number	US-12307992-B2
Application number	US-202217756661-A
Country	US
Kind code	B2
Filing date	May 16, 2022
Priority date	Apr 19, 2022
Publication date	May 20, 2025
Grant date	May 20, 2025

Abstract

The embodiment of the present disclosure is directed to a display panel. The display panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a common electrode layer and a pixel electrode layer. The second substrate comprises a control electrode layer. The liquid crystal layer is between the first substrate and the second substrate. The display panel includes a display mode and a touch mode working alternately. The display mode includes an anti-peeping mode and a sharing mode. When the display panel works in the anti-peeping mode, the control electrode layer receives a first display signal. When the display panel works in the sharing mode, the control electrode layer receives a second display signal. When the display panel works in the touch mode, the control electrode layer or the common electrode layer receives a touch driving signal.

First claim

What is claimed is:

1. A display panel, comprising:
a first substrate, comprising a common electrode layer and a pixel electrode layer;
a second substrate, arranged opposite to the first substrate and provided with a control electrode layer; and
a liquid crystal layer, sandwiched between the first substrate and the second substrate;
wherein a display mode and a touch mode alternately are operated by the display panel; the display mode comprises an anti-peeping mode and a sharing mode, and the control electrode layer receives a first display signal when the display panel operates in the anti-peeping mode; when the display panel works in the sharing mode, the control electrode layer receives a second display signal; when the display panel works in the touch mode, the control electrode layer or the common electrode layer receives a touch driving signal; and
the common electrode layer or the control electrode layer is reused as a touch electrode layer.

2. The display panel as claimed in claim 1 , wherein the liquid crystal layer comprises a plurality of liquid crystal molecules; when the display panel works in the anti-peeping mode, the liquid crystal molecules rotate in an inclined plane, the inclined plane is parallel to a first direction and a second direction, the first direction is inclined relative to a thickness direction of the display panel, and the second direction is perpendicular to the thickness direction of the display panel and the first direction.

3. The display panel as claimed in claim 2 , wherein when the display panel works in the sharing mode, the liquid crystal molecules rotate in a plane perpendicular to the thickness direction of the display panel.

4. The display panel as claimed in claim 3 , wherein a voltage value of the first display signal is greater than or equal to 0 V and less than or equal to 3 V, and a voltage value of the second display signal is greater than 5 V.

5. The display panel as claimed in claim 4 , wherein the display panel further comprises a first alignment layer between the first substrate and the liquid crystal layer, and a second alignment layer between the second substrate and the liquid crystal layer; wherein an included angle between each of the liquid crystal molecules and the first alignment layer or the second alignment layer is greater than or equal to 20 degrees and less than or equal to 80 degrees.

6. The display panel as claimed in claim 1 , wherein the first substrate further comprises a first lining, and the common electrode layer is between the first lining and the pixel electrode layer.

7. The display panel as claimed in claim 1 , wherein the first substrate further comprises a first lining, and the common electrode layer is located at one side of the pixel electrode layer away from the first lining.

8. The display panel as claimed in claim 1 , wherein the control electrode layer or the common electrode layer comprises a plurality of driving electrodes and a plurality of sensing electrodes that are patterned; the driving electrodes are arranged along a first direction, the sensing electrodes are arranged along the second direction, and the first direction intersects a second direction;
wherein each of the driving electrodes receives the touch driving signal.

9. The display panel as claimed in claim 1 , wherein the control electrode layer or the common electrode layer comprises a plurality of touch electrodes that are patterned and arranged in array, and each of the touch electrodes receives the touch driving signal.

10. The display panel as claimed in claim 1 , wherein the second substrate comprises a display area and a binding area on one side of the display area, and a first driving chip is disposed in the binding area;
wherein when the display panel works in the touch mode, the control electrode layer receives the touch driving signal, and the first driving chip is used to output the first display signal, the second display signal, and the touch driving signal.

11. The display panel as claimed in claim 1 , wherein the first substrate comprises a display area and a binding area on one side of the display area; a second driving chip is disposed in the binding area; a conductive gold ball is disposed between the first substrate and the second substrate; and
wherein when the display panel works in the touch mode, the control electrode layer receives the touch driving signal, and the second driving chip transmits the first display signal, the second display signal, and the touch driving signal to the second substrate through the conductive gold ball.

12. A display terminal, comprising a terminal body and a display panel assembled with the terminal body, the display panel comprising:
a first substrate, comprising a common electrode layer and a pixel electrode layer;
a second substrate, arranged opposite to the first substrate and provided with a control electrode layer; and
a liquid crystal layer, sandwiched between the first substrate and the second substrate;
wherein a display mode and a touch mode alternately are operated by the display panel; the display mode comprises an anti-peeping mode and a sharing mode, and the control electrode layer receives a first display signal when the display panel operates in the anti-peeping mode; when the display panel works in the sharing mode, the control electrode layer receives a second display signal; when the display panel works in the touch mode, the control electrode layer or the common electrode layer receives a touch driving signal; and
the common electrode layer or the control electrode layer is reused as a touch electrode layer.

13. The display terminal as claimed in claim 12 , wherein the liquid crystal layer comprises a plurality of liquid crystal molecules; when the display panel works in the anti-peeping mode, the liquid crystal molecules rotate in an inclined plane, the inclined plane is parallel to a first direction and a second direction, the first direction is inclined relative to a thickness direction of the display panel, and the second direction is perpendicular to the thickness direction of the display panel and the first direction.

14. The display terminal as claimed in claim 13 , wherein when the display panel works in the sharing mode, the liquid crystal molecules rotate in a plane perpendicular to the thickness direction of the display panel.

15. The display terminal as claimed in claim 14 , wherein a voltage value of the first display signal is greater than or equal to 0 V and less than or equal to 3 V, and a voltage value of the second display signal is greater than 5 V.

16. The display terminal as claimed in claim 15 , wherein the display panel further comprises a first alignment layer between the first substrate and the liquid crystal layer, and a second alignment layer between the second substrate and the liquid crystal layer; wherein an included angle between each of the liquid crystal molecules and the first alignment layer or the second alignment layer is greater than or equal to 20 degrees and less than or equal to 80 degrees.

17. The display terminal as claimed in claim 12 , wherein the control electrode layer or the common electrode layer comprises a plurality of driving electrodes and a plurality of sensing electrodes that are patterned; the driving electrodes are arranged along a first direction, the sensing electrodes are arranged along the second direction, and the first direction intersects a second direction;
wherein each of the driving electrodes receives the touch driving signal.

18. The display terminal as claimed

Assignees

• Wuhan China Star Optoelectronics Technology Co Ltd

Inventors

• Cheng Wei

Classifications

• G09G2354/00

  Aspects of interface with display user · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title

• G02F1/1337

  Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers · CPC title

• G02F1/13338

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