DISPLAY PANEL AND DISPLAY DEVICE

• US 20170220178A1
• Filed: 06/03/2016
• Published: 08/03/2017
• Est. Priority Date: 02/02/2016
• Status: Active Grant

• Current Assignee: Shanghai AVIC Optoelectronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Original Assignee: Shanghai AVIC Optoelectronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: Jian, Shoufu, Xia, Zhiqiang, Cao, Zhaokeng
• Granted Patent: US 10,545,603 B2
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/134309 characterised by their geometrical arrangement
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0416 Control or interface arrangements specially adapted for digitisers
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 3/3655 Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors

Abstract

A display panel is provided. The display includes a first electrode layer and a second electrode layer. The first electrode layer includes a plurality of first electrodes, each having a shape extending in a first direction, wherein the plurality of the first electrodes are arranged in a second direction. The second electrode layer includes a plurality of second electrodes extending in the second direction and arranged in the first direction, the second direction being perpendicular to the first direction. A ration between a first central distance between two adjacent first electrodes, and a second central distance between two adjacent second electrodes is in the range of 0.5 to 2. In the display panel and the display device according to the present disclosure, the display effect is reconciled with the touch recognizing performance, thereby improving the touch performance of the panel and user experience.

Claims

1. A display panel, comprising:

a first electrode layer comprising a plurality of first electrodes, each having a shape extending in a first direction, wherein the plurality of the first electrodes are arranged in a second direction, the second direction being perpendicular to the first direction; and

a second electrode layer comprising a plurality of second electrodes, each having a shape extending in the second direction, wherein the plurality of the second electrodes are arranged in the first direction; and

, wherein

a ration between a first central distance between two adjacent first electrodes, and a second central distance between two adjacent second electrodes is in the range of 0.5 to 2.

2. The display panel according to claim 1, wherein the first electrode has a first electrode width in the second direction, and the two adjacent first electrode have a first gap width in the second direction;

and

the second electrode has a second electrode width in the first direction, and the two adjacent second electrodes have a second gap width in the first direction,

wherein the first central distance equals to a sum of the first electrode width and the first gap width, and the second central distance equals to a sum of the second electrode width and the second gap width.

3. The display panel according to claim 1, further comprising:

a first substrate and a second substrate arranged opposite to each other, and

a liquid crystal layer interposed between the first substrate and the second substrate.

4. The display panel according to claim 3, wherein the first electrode layer is disposed on the first substrate at a side facing the second substrate, and the second electrode layer is disposed on the second substrate at a side opposite to the first substrate.

5. The display panel according to claim 3, further comprising a data line and a scan line disposed on the first substrate, the data line being extending in the first direction, and the scan line being extending in the second direction.

6. The display panel according to claim 3, wherein orthographic projections of the first electrode and the second electrode on the first substrate have an overlapped region, and the overlapped region is a square.

7. The display panel according to claim 3, wherein the first electrode layer also serves as a common electrode layer.

8. The display panel according to claim 7, wherein the display panel is driven in a time division manner, and wherein:

during a display period, the first electrode receives a common voltage signal, and

during a touch period, the first electrode receives a touch driving signal.

9. A display device, comprising a display panel, the display panel comprising:

a first electrode layer comprising a plurality of first electrodes, each having a shape extending in a first direction, wherein the plurality of the first electrodes are arranged in a second direction; and

a second electrode layer comprising a plurality of second electrodes, each having a shape extending in the second direction, wherein the plurality of the second electrodes are arranged in the first direction, the second direction being perpendicular to the first direction;

an, wherein

a ration between a first central distance between two adjacent first electrodes, and a second central distance between two adjacent second electrodes is in the range of 0.5 to 2.

10. The display device according to claim 9, wherein the first electrode has a first electrode width in the second direction, and the two adjacent first electrode have a first gap width in the second direction;

and

the second electrode has a second electrode width in the first direction, and the two adjacent second electrodes have a second gap width in the first direction,

wherein the first central distance equals to a sum of the first electrode width and the first gap width, and the second central distance equals to a sum of the second electrode width and the second gap width.

11. The display device according to claim 9, further comprising a first substrate and a second substrate arranged opposite to each other, and a liquid crystal layer interposed between the first substrate and the second substrate.

12. The display device according to claim 11, wherein the first electrode layer is disposed on the first substrate at a side facing the second substrate, and the second electrode layer is disposed on the second substrate at a side opposite to the first substrate.

13. The display device according to claim 11, further comprising a data line and a scan line disposed on the first substrate, the data line being extending in the first direction, and the scan line being extending in the second direction.

14. The display device according to claim 11, wherein orthographic projections of the first electrode and the second electrode on the first substrate have an overlapped region, and the overlapped region is a square.

15. The display device according to claim 11, wherein the first electrode layer also serves as a common electrode layer.

16. The display device according to claim 15, wherein the display panel is driven in a time division manner, and wherein:

during a display period, the first electrode receives a common voltage signal, and

during a touch period, the first electrode receives a touch driving signal.