TOUCH SENSING LAYER AND MANUFACTURING METHOD THEREOF

• US 20120319964A1
• Filed: 02/02/2012
• Published: 12/20/2012
• Est. Priority Date: 06/15/2011
• 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: Liu, Chen-Yu, Lee, Lu-Hsing, Chang, Cheng-Chieh, Lin, Ching-Shan
• Granted Patent: US 8,963,856 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• 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: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: Y10T 29/49105 Switch making

Abstract

The present invention relates to a touch sensing layer which comprises at least one first-axis sensing electrode, second-axis sensing electrode, insulating element and conductive bridge. Each first-axis sensing electrode comprises a plurality of first electrode patterns with discontinuity-in-series, and each second-axis sensing electrode is configured to interlace with each first-axis sensing electrode and comprises a plurality of second electrode patterns with continuity-in-series. Each insulating element is continuously formed on the corresponding second-axis sensing electrode, and each conductive bridge is also continuously formed above the corresponding first-axis sensing electrode and crosses the insulating element to connect those first electrode patterns with discontinuity-in-series.

Claims

1. A touch sensing layer, comprising:

a first-axis sensing electrode comprising a plurality of first electrode patterns with discontinuity-in-series;

a second-axis sensing electrode interlaced with the first-axis sensing electrode and comprising a plurality of second electrode patterns with continuity-in-series;

an insulating element, continuously formed on the corresponding second-axis sensing electrode; and

a conductive bridge, discontinuously configured corresponding to the intersection of the first-axis sensing electrode and the second-axis sensing electrode and crossing the insulating element to connect two first electrode patterns with discontinuity-in-series.

2. The touch sensing layer according to claim 1, wherein the insulating element and the conductive bridge are formed by a printing process.

3. The touch sensing layer according to claim 2, wherein the printing process forming the insulating element being at least one chosen from contact printing process and non-contact printing process.

4. The touch sensing layer according to claim 2, wherein the printing process forming the conductive bridge being at least one chosen from contact printing process and non-contact printing process.

5. The touch sensing layer according to claim 1, wherein at least one chosen from the insulating element and the conductive bridge being formed by a photolithography process.

6. A touch sensing layer, comprising:

a first-axis sensing electrode, comprising a plurality of first electrode patterns with discontinuity-in-series;

a second-axis sensing electrode, interlaced with the first-axis sensing electrode and comprising a plurality of second electrode patterns with continuity-in-series;

an insulating element, discontinuously formed corresponding to the intersection of the first-axis sensing electrode and the second-axis sensing electrode; and

a conductive bridge, continuously configured above the corresponding first-axis sensing electrode and crossing the insulating element to connect those first electrode patterns with discontinuity-in-series.

7. The touch sensing layer according to claim 6, wherein the insulating element and the conductive bridge are formed by a printing process, and the printing processes forming the insulating element and forming the conductive bridge are respectively at least one chosen from contact printing process and non-contact printing process.

8. The touch sensing layer according to claim 6, wherein at least one chosen from the insulating element and the conductive bridge being formed by a photolithography process.

9. A touch sensing layer, comprising:

a first-axis sensing electrode, comprising a plurality of first electrode patterns with discontinuity-in-series;

a second-axis sensing electrode, interlaced with the first-axis sensing electrode and comprising a plurality of second electrode patterns with continuity-in-series;

an insulating element, each continuously formed on the corresponding second-axis sensing electrode; and

a conductive bridge, each continuously configured above the corresponding first-axis sensing electrode and crossing the insulating element to connect those first electrode patterns with discontinuity-in-series.

10. The touch sensing layer according to claim 9, wherein the insulating element and the conductive bridge are formed by a printing process, and the printing processes forming the insulating element and forming the conductive bridge are respectively at least one chosen from contact printing process and non-contact printing process.

11. The touch sensing layer according to claim 9, wherein at least one chosen from the insulating element and the conductive bridge being formed by photolithography process.

12. A method for manufacturing a touch sensing layer, comprising:

forming a first-axis sensing electrode and a second-axis sensing electrode, wherein the first-axis sensing electrode comprises a plurality of first electrode patterns with discontinuity-in-series, and the second-axis sensing electrode interlaced with the first-axis sensing electrode and comprises a plurality of second electrode patterns with continuity-in-series;

forming an insulating element by at least one chosen from first printing process and photolithography process; and

forming a conductive bridge by at least one chosen from second printing process and photolithography process.

13. The method for manufacturing a touch sensing layer according to claim 12, wherein the first printing process being at least one chosen from contact printing process and non-contact printing process.

14. The method for manufacturing a touch sensing layer according to claim 12, wherein the second printing process being at least one chosen from contact printing process and non-contact printing process.

15. The method for manufacturing a touch sensing layer according to claim 12, wherein the first printing process continuously form the insulating element on the corresponding second-axis sensing electrode.

16. The method for manufacturing a touch sensing layer according to claim 12, wherein the first printing process discontinuously form the insulating element corresponding to the intersection of the first-axis sensing electrode and the second-axis sensing electrode.

17. The method for manufacturing a touch sensing layer according to claim 12, wherein the second printing process discontinuously form each conductive bridge corresponding to the intersection of the first-axis sensing electrode and the second-axis sensing electrode, and each conductive bridge crosses the insulating element to connect two first electrode patterns with discontinuity-in-series.

18. The method for manufacturing a touch sensing layer according to claim 12, wherein the second printing process continuously form the conductive bridge above the corresponding first-axis sensing electrode and cross the insulating element to connect those first electrode patterns with discontinuity-in-series.

19. The method for manufacturing a touch sensing layer according to claim 12, further comprising:

forming a continuous insulating element on the second-axis sensing electrode by the photolithography process; and

forming a conductive bridge on the insulating element by the photolithography process.

20. The method for manufacturing a touch sensing layer according to claim 12, further comprising:

forming an insulating element on the second-axis sensing electrode by a photolithography process; and

forming a continuous conductive bridge above the corresponding first-axis sensing electrode and the conductive bridge crossing the insulating element to connect those first electrode patterns with discontinuity-in-series.