TOUCH PANEL AND A MANUFACTURING METHOD THEREOF

• US 20130270079A1
• Filed: 04/17/2013
• Published: 10/17/2013
• Est. Priority Date: 04/17/2012
• Status: Active Grant

• Current Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Original Assignee: TPK Touch Solutions (Xiamen) Inc. (TPK Holding Co., Ltd.)
• Inventors: Xie, Yanjun, Jiang, Yau-Chen, Lai, Bin, Shi, Enshi
• Granted Patent: US 9,214,297 B2
• Time in Patent Office: Days
• US Class Current: 200/305
• 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: H01H 9/12 Means for earthing parts of switch not normally conductively connected to the contacts

Abstract

The present disclosure provides a touch panel which at least comprises a sensing area, a conductive wire area, and earthing lines. The conductive wire area surrounds the sensing area and is electrically connected to the sensing area, and the conductive wire area comprises a first conductive wire area and a second conductive wire area. The earthing lines are set between the first conductive wire area and the second conductive wire area. The touch panel can efficiently shield signal crosstalk between the first conductive wire area and the second conductive wire area by setting the earthing lines between the first conductive wire area and the second conductive wire area, thereby reducing the influence of signal crosstalk on efficiency of the touch panel.

Claims

1. A touch panel, at least comprising:

a sensing area;

a conductive wire area, surrounding the sensing area and electrically connected to the sensing area, wherein the conductive wire area comprises a first conductive wire area and a second conductive wire area; and

earthing lines, set between the first conductive wire area and the second conductive Wire area.

2. The touch panel of claim 1, wherein the earthing lines are extended to the conductive wire area and electrically insulated from the conductive wire area.

3. The touch panel of claim 2, wherein the earthing line is extended to the first conductive wire area.

4. The touch panel of claim 3, wherein the earthing line is extended to the second conductive wire area.

5. The touch panel of claim 1, wherein the sensing area comprises:

a plurality of first electrodes, arranged along a first direction; and

a plurality of second electrodes, arranged along a second direction and electrically insulated from the plurality of first electrodes.

6. The touch panel of claim 5, wherein the conductive wire area comprises:

a plurality of first conductive wires distributed on the first conductive wire area and electrically connected to the plurality of first electrodes; and

a plurality of second conductive wires distributed on the second conductive wire area and electrically connected to the plurality of second electrodes.

7. The touch panel of claim 6, wherein the conductive wire area further comprises:

first connecting parts, wherein the first conductive wires are electrically connected to the first electrodes through the first connecting parts, and wherein the earthing line is extended to intersect with the first connecting parts and is electrically insulated from the first connecting parts.

8. The touch panel of claim 7, wherein the conductive wire area further comprises:

second connecting parts, wherein the second conductive wires are electrically connected to the second electrodes though the second connecting parts, and Wherein the earthing line is extended to intersect with the second connecting parts and is electrically insulated from the second connecting parts.

9. The touch panel of claim 7, further comprising a plurality of insulating blocks set between the earthing line and the first connecting parts.

10. The touch panel of claim 7, wherein the first connecting part comprises a first electrode extension part and a first electrode bridging layer.

11. The touch panel of claim 7, wherein the first connecting part comprises a first electrode bridging layer.

12. The touch panel of claim 7, wherein the earthing line is located at the periphery of the plurality of first conductive wires.

13. The touch panel of claim 8, further comprising a plurality of insulating blocks set between the earthing line and the second connecting parts.

14. The touch panel of claim 8, wherein the second connecting part comprises a second electrode extension part and a second electrode bridging layer.

15. The touch panel of claim 8, wherein the second connecting part comprises a second electrode bridging layer.

16. The touch panel of claim 8, wherein the earthing line is located at the periphery of the plurality of second conductive wires.

17. The touch panel of claim 5, wherein the first direction intersects with the second direction.

18. The touch panel of claim 5, wherein materials of the first electrodes and the second electrodes comprise transparent conductive materials.

19. The touch panel of claim 6, wherein materials of the first conductive wires and the second conductive wires comprise metals or transparent conductive materials.

20. The touch panel of claim 1, wherein material of the earthing lines comprises metals or transparent conductive materials.