Touch sensor, touch screen and display device

• US 9,250,661 B2
• Filed: 01/08/2013
• Issued: 02/02/2016
• Est. Priority Date: 05/29/2012
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.)
• Inventors: Ren, Tao
• Primary Examiner(s): Lee, Jr., Kenneth B
• Application Number:
  US13/979,947
• Publication Number:
  US 20140055687A1
• Time in Patent Office: 1,120 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06F 1/169 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes G06F1/1643 takes precedence; constructional details of pointing devices G06F3/033
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

Embodiments of the present invention provide a sensor, a touch screen and a display for decreasing damage possibility of the touch screen. The touch sensor comprises a horizontal conducting layer, a conductive bridge having two ends respectively connected with one horizontal conducting layer, and a vertical conducting layer, the conductive bridge overlapping with the vertical conducting layer and being spaced from the vertical conductive layer by an insulating layer; the vertical conducting layer comprises at least one insulating zone provided at a first designated position; a distance of two corresponding end points in a width direction of the conductive bridge of the projection zone, which projection zone is a normal projection zone of the at least one insulating zone on the conductive bridge, is not less than a width of the conductive bridge.

Claims

1. A touch sensor, comprising:

a horizontal conducting layer, a conductive bridge having two ends respectively connected with one horizontal conducting layer, and a vertical conducting layer, wherein the conductive bridge and the vertical conducting layer are provided in different layers and vertically overlapped with each other, and a layer where the conductive bridge is located is spaced with the vertical conducting layer by an insulating layer;

the vertical conducting layer comprises at least one insulating zone provided at a first designated position, the insulating zone is an opening region formed in the vertical conducting layer, and along an extension direction of the conductive bridge, an orthographic projection, on a plane where the conductive bridge is located, of the opening region is arranged between the two ends of the conductive bridge; and

a distance of two corresponding end points in a width direction of the conductive bridge of a projection zone, which projection zone is a normal projection zone of the at least one insulating zone on the conductive bridge, is not less than a width of the conductive bridge.

2. The touch sensor according to claim 1, wherein the vertical conducting layer comprises at least two insulating zones provided at the first designated position, and every two insulating zones are spaced by a first preset distance therebetween.

3. The touch sensor according to claim 1, wherein the insulating zone and the horizontal conducting layer adjacent thereto are spaced by a second preset distance.

4. The touch sensor according to claim 2, wherein shapes of all insulating zones are the same to each other or not.

5. The touch sensor according to claim 1, wherein the insulating zone is in a rectangle shape.

6. The touch sensor according to claim 5, wherein a long side of the insulating zone is perpendicular to the conductive bridge.

7. The touch sensor according to claim 1, wherein edges of the conductive bridge are of an irregular shape.

8. The touch sensor according to claim 7, wherein part of edges of the conductive bridge corresponding to the at least one insulating zone of the vertical conducting layer is of an irregular shape.

9. The touch sensor according to claim 7, wherein the irregular shape is a saw shape.

10. A touch screen comprising the touch sensor according to claim 1.

11. A display device comprising the touch screen according to claim 10.

12. The touch sensor according to claim 2, wherein the insulating zone and the horizontal conducting layer adjacent thereto are spaced by a second preset distance.

13. The touch sensor according to claim 2, wherein the insulating zone is in a rectangle shape.

14. The touch sensor according to claim 13, wherein a long side of the insulating zone is perpendicular to the conductive bridge.

15. The touch sensor according to claim 2, wherein edges of the conductive bridge are of an irregular shape.

16. The touch sensor according to claim 15, wherein part of edges of the conductive bridge corresponding to the at least one insulating zone of the vertical conducting layer is of an irregular shape.

17. The touch sensor according to claim 16, wherein the irregular shape is a saw shape.