TOUCH PANEL

• US 20110057887A1
• Filed: 12/02/2009
• Published: 03/10/2011
• Est. Priority Date: 09/07/2009
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Lee, Hsin-Hung, Lin, Yu-Chuan, Chen, Pei-Yu, Ma, Mei-Sheng, Chiu, Yu-Mei, Chang, Wei-Jen, Cheng, Kuo-Hsing, Liu, Sheng-Fa, Kuo, Jing-Tin
• Granted Patent: US 8,184,105 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• 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 3/0443 using a single layer of sensing electrodes
• 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

Abstract

A touch panel including a substrate, a plurality of first sensing series, and a plurality of second sensing series is provided. The first sensing series and the second sensing series are disposed on the substrate. The first sensing series extend along a first direction and are electrically insulated from each other. Each of the first sensing series includes a plurality of first sensing pads and a plurality of first bridge portions connected between the first sensing pads. The second sensing series extend along a second direction and are electrically insulated from each other. Each of the second sensing series includes a plurality of second sensing pads and a plurality of second bridge portions connected between the second sensing pads. Each of the first bridge portions and one of the second bridge portions are intersected, and at least one of the second bridge portions has at least one electrostatic discharge tip.

Claims

1. A touch panel, comprising:

a substrate;

a plurality of first sensing series disposed on the substrate, the first sensing series extending along a first direction and being electrically insulated from one another, each of the first sensing series comprising;

a plurality of first sensing pads;

a plurality of first bridge portions, each of the first bridge portions being electrically connected between two neighboring first sensing pads; and

a plurality of second sensing series disposed on the substrate, the second sensing series extending along a second direction and being electrically insulated from one another, each of the second sensing series comprising;

a plurality of second sensing pads; and

a plurality of second bridge portions, each of the second bridge portions being electrically connected between two neighboring second sensing pads, wherein each of the second bridge portions intersects one of the first bridge portions respectively, and at least one of the second bridge portions has at least an electrostatic discharge tip.

2. The touch panel as claimed in claim 1, wherein the first sensing series and the second sensing series substantially intersect each other.

3. The touch panel as claimed in claim 1, wherein the electrostatic discharge tip is aligned to an edge of one of the first bridge portions.

4. The touch panel as claimed in claim 1 further comprising:

a plurality of sensing signal transmission lines, each of the sensing signal transmission lines is electrically connected with one of the first sensing series or one of the second sensing series, wherein an end of each of the sensing signal transmission lines has at least a first tip; and

an electrostatic release line having at least a second tip, wherein the first tip and the second tip are aligned to each other in a tip-to-tip way.

5. The touch panel as claimed in claim 1 further comprising a floating conductive layer disposed between the first sensing pads and the second sensing pads, wherein the floating conductive layer is electrically insulated from the first sensing pads and the second sensing pads.

6. The touch panel as claimed in claim 1 further comprising an electrostatic release line having at least a tip, wherein each of the first sensing series and each of the second sensing series respectively has an edge tip, and the edge tip is aligned to the tip in a tip-to-tip way.

7. A touch panel, comprising:

a substrate;

a plurality of first sensing series disposed on the substrate, the first sensing series extending along a first direction and being electrically insulated from one another, each of the first sensing series comprising;

a plurality of first sensing pads;

a plurality of first bridge portions, each of the first bridge portions being electrically connected between two neighboring first sensing pads; and

at least a first electrostatic discharge tip extending from an edge of the first sensing pad in one of the first sensing series toward an edge of one of the first sensing pads in the neighboring first sensing series; and

a plurality of second sensing series disposed on the substrate, the second sensing series extending along a second direction and being electrically insulated from one another, each of the second sensing series comprising;

a plurality of second sensing pads; and

a plurality of second bridge portions, each of the second bridge portions being electrically connected between two neighboring second sensing pads.

8. The touch panel as claimed in claim 7, wherein the first electrostatic discharge tip comprises:

a first extending portion extending from an edge of one of the first sensing pads toward the neighboring first sensing series; and

a first tip portion connected with the first extending portion, wherein the first tip portion extends from an edge of the first extending portion toward the neighboring first sensing series.

9. The touch panel as claimed in claim 7, wherein each of the second sensing series further comprises:

at least a second electrostatic discharge tip extending from an edge of one of the second sensing pads toward the neighboring second sensing series.

10. The touch panel as claimed in claim 9, wherein the second electrostatic discharge tip comprises:

a second extending portion extending from an edge of one of the second sensing pads toward the neighboring second sensing series; and

a second tip portion connected with the second extending portion, wherein the second tip portion extends from an edge of the second extending portion toward the neighboring second sensing series.

11. The touch panel as claimed in claim 7 further comprising:

a plurality of sensing signal transmission lines, each of the sensing signal transmission lines is electrically connected with one of the first sensing series or one of the second sensing series, wherein an end of each of the sensing signal transmission lines has at least a first tip; and

an electrostatic release line having at least a second tip, wherein the first tip and the second tip are aligned to each other in a tip-to-tip way.

12. The touch panel as claimed in claim 7 further comprising a floating conductive layer disposed between the first sensing pads and the second sensing pads, wherein the floating conductive layer is electrically insulated from the first sensing pads and the second sensing pads.

13. The touch panel as claimed in claim 7 further comprising an electrostatic release line having at least a tip, wherein each of the first sensing series and each of the second sensing series respectively has an edge tip, and the edge tip is aligned to the tip in a tip-to-tip way.

14. A touch panel, comprising:

a substrate;

a plurality of first sensing series disposed on the substrate, the first sensing series extending along a first direction and being electrically insulated from one another, each of the first sensing series comprising;

a plurality of first sensing pads;

a plurality of first bridge portions, each of the first bridge portions being electrically connected between two neighboring first sensing pads; and

a plurality of second sensing series disposed on the substrate, the second sensing series extending along a second direction and being electrically insulated from one another, each of the second sensing series comprising;

a plurality of second sensing pads; and

a plurality of second bridge portions, each of the second bridge portions being electrically connected between two neighboring second sensing pads;

at least an electrostatic discharge tip extending from an edge of the second sensing pad in one of the second sensing series toward one of the first bridge portions.

15. The touch panel as claimed in claim 14, wherein the first bridge portion has at least a tip, and the tip is aligned to the electrostatic discharge tip in a tip-to-tip way.

16. The touch panel as claimed in claim 14, wherein the electrostatic discharge tip extends above or under one of the first bridge portions.

17. The touch panel as claimed in claim 14, wherein the electrostatic discharge tip has at least a lateral tip aligned to an edge of the first bridge portion.

18. The touch panel as claimed in claim 14 further comprising an electrostatic release line having at least a tip, wherein each of the first sensing series and each of the second sensing series respectively has an edge tip, and the edge tip is aligned to the tip in a tip-to-tip way.

19. A touch panel, comprising:

a substrate;

a plurality of first sensing series disposed on the substrate, the first sensing series extending along a first direction and being electrically insulated from one another, each of the first sensing series comprising;

a plurality of first sensing pads;

a plurality of first bridge portions, each of the first bridge portions being electrically connected between two neighboring first sensing pads;

a plurality of second sensing series disposed on the substrate, the second sensing series extending along a second direction and being electrically insulated from one another, each of the second sensing series comprising;

a plurality of second sensing pads;

a plurality of second bridge portions, each of the second bridge portions being electrically connected between two neighboring second sensing pads; and

at least a third electrostatic discharge tip extending from an edge of the first sensing pad in one of the first sensing series toward an edge of one of the second sensing pads in the neighboring second sensing series, wherein the third electrostatic discharge tip is electrically connected with one of the first sensing pads or one of the second sensing pads.

20. The touch panel as claimed in claim 19 further comprising:

a plurality of sensing signal transmission lines, each of the sensing signal transmission lines is electrically connected with one of the first sensing series or one of the second sensing series, wherein an end of each of the sensing signal transmission lines has at least a first tip; and

an electrostatic release line having at least a second tip, wherein the first tip and the second tip are aligned to each other in a tip-to-tip way.

21. The touch panel as claimed in claim 19 further comprising a floating conductive layer disposed between the first sensing pads and the second sensing pads, wherein the floating conductive layer is electrically insulated from the first sensing pads and the second sensing pads.

22. The touch panel as claimed in claim 19 further comprising an electrostatic release line having at least a tip, wherein each of the first sensing series and each of the second sensing series respectively has an edge tip, and the edge tip is aligned to the tip in a tip-to-tip way.