TOUCH CONTROL ELECTRODE STRUCTURE, TOUCH SCREEN AND DISPLAY APPARATUS

• US 20170307924A1
• Filed: 02/03/2016
• Published: 10/26/2017
• Est. Priority Date: 09/15/2015
• Status: Abandoned Application

• Current Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Inventors: LIU, Tingliang, GAO, Shan, HUANG, Weiyun
• Application Number:
  US15/520,596
• Publication Number:
  US 20170307924A1
• Time in Patent Office: Days
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1343 Electrodes reflective electrodes G02F1/133553
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/03547 Touch pads, in which fingers can move on a surface
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch electrode structure, a touch panel and a display device are provided. The touch electrode structure includes at least one touch electrode group. The at least one touch electrode group is arranged around a center; each touch electrode group includes a plurality of touch electrodes, the plurality of touch electrodes in each touch electrode group are arranged in the direction from the position closer to the center to the position further away from the center respectively; and a size of a side portion of each touch electrode away from the center along a circumferential direction is greater than a size of a side portion of the touch electrode close to the center along a circumferential direction. The touch electrode structure may be applied in a non-rectangular (irregular) touch panel, according to the requirements, the touch electrode structure can effectively and completely cover the non-rectangular (irregular) touch panel.

Claims

1. A touch electrode structure, comprising at least one touch electrode group,

wherein the at least one touch electrode group is arranged around a center;

each touch electrode group comprises a plurality of touch electrodes, the plurality of touch electrodes in each touch electrode group are arranged in a direction from a position closer to the center to a position further away from the center respectively; and

a size of a side portion of each touch electrode away from the center along a circumferential direction is greater than a size of a side portion of the touch electrode close to the center along the circumferential direction.

2. The touch electrode structure according to claim 1, wherein the plurality of touch electrodes in each touch electrode group are arranged along a ray in the direction from the position closer to the center to the position further away from the center respectively;

and the plurality of touch electrodes in each touch electrode group are arranged by taking the ray as a center line.

3. The touch electrode structure according to claim 1, wherein in the plurality of touch electrodes of each touch electrode group, an average size of the touch electrodes further away from the center along the circumferential direction is greater than an average size of the touch electrodes closer to the center along the circumferential direction.

4. The touch electrode structure according to claim 1, wherein a shape of the plurality of touch electrodes as a whole comprises an annular sector or a trapezoid.

5. The touch electrode structure according to claim 1, wherein the touch electrode structure comprises a plurality of touch electrode groups;

and circumferentially adjacent touch electrodes in the plurality of touch electrode groups are disposed in an annular sector region, a ring region, a polygonal region or a polygonal ring region.

6. The touch electrode structure according to claim 1, wherein each touch electrode group is disposed in an annular sector region or a trapezoidal region;

and the plurality of touch electrodes in each touch electrode group almost cover the annular sector region or the trapezoidal region.

7. The touch electrode structure according to claim 6, wherein each touch electrode group is disposed in an annular sector region, and circumferentially adjacent touch electrodes are disposed in an annular sector region or a ring region;

or each touch electrode group is disposed in a trapezoidal region, and the circumferentially adjacent touch electrodes are disposed in a polygonal region or a polygonal ring region.

8. The touch electrode structure according to claim 1, wherein radial sizes of the touch electrodes arranged in the direction from the position closer to the center to the position further away from the center are sequentially reduced.

9. The touch electrode structure according to claim 1, wherein an area of each touch electrode is equal or roughly equal.

10. The touch electrode structure according to claim 1, wherein at least one touch electrode in each touch electrode group comprises a plurality of circumferentially arranged sub-touch electrodes.

11. The touch electrode structure according to claim 10, wherein an area of each sub-touch electrode and an area of each touch electrode are equal or roughly equal.

12. The touch electrode structure according to claim 10, wherein a shape of the plurality of sub-touch electrodes as a whole comprises a polygon.

13. The touch electrode structure according to claim 1, further comprising a center touch electrode, wherein the center touch electrode is disposed at the center.

14. The touch electrode structure according to claim 1, wherein the touch electrode structure is disposed in a non-rectangular region.

15. The touch electrode structure according to claim 14, wherein the non-rectangular region comprises a sector region, an annular sector region, a circular region, a ring region, a polygonal region and a polygonal ring region.

16. A touch panel, comprising the touch electrode structure according to claim 1.

17. A display device, comprising the touch electrode structure according to claim 1.

18. The display device according to claim 17, further comprising a display panel, wherein the touch electrode structure is disposed on the display panel.

19. The display device according to claim 17, further comprising a display panel and a touch panel disposed on a display side of the display panel, wherein the touch electrode structure is disposed on the touch panel.

20. The display device according to claim 1, wherein the display device comprises a liquid crystal display device or an organic light-emitting diode display device.