Touch Panel Device

• US 20090236151A1
• Filed: 03/10/2009
• Published: 09/24/2009
• Est. Priority Date: 03/21/2008
• Status: Abandoned Application

• Current Assignee: Elan Microelectronics Corporation
• Original Assignee: Elan Microelectronics Corporation
• Inventors: TENG, Ji-Shien, YEH, I-Hau
• Application Number:
  US12/400,797
• Publication Number:
  US 20090236151A1
• Time in Patent Office: Days
• US Class Current: 178/18.30
• 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 3/0412 Digitisers structurally integrated in a display
• 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

An exemplary touch panel device includes a substrate, an insulating layer form on a surface of the substrate, a plurality of first electrode groups and a plurality of second electrode groups. Each first electrode group includes a plurality of first electrodes and a plurality of first connecting wires each electrically connecting two adjacent first electrodes. Each second electrode group includes a plurality of second electrodes and a plurality of bridge connecting wires each electrically connecting two adjacent second electrodes. The first electrode groups and the second electrodes of the second electrode groups are alternately formed on a surface of the insulating layer away from the substrate. The bridge connecting wires are formed on the surface of the substrate contacting with the insulating layer.

Claims

1. A touch panel device comprising:

a substrate;

an insulating layer form on a surface of the substrate;

a plurality of first electrode groups, each first electrode group comprising a plurality of first electrodes and a plurality of first connecting wires each electrically connecting two adjacent first electrodes; and

a plurality of second electrode groups, each second electrode group comprising a plurality of second electrodes and a plurality of bridge connecting wires each electrically connecting two adjacent second electrodes,

wherein the first electrode groups and the second electrodes of the second electrode groups are alternately formed on a surface of the insulating layer away from the substrate, the bridge connecting wires are formed on the surface of the substrate contacting with the insulating layer.

2. The touch panel device as claimed in claim 1, wherein each bridge connecting wire of the second electrode groups comprises a plurality of bridge connecting line-segments, each bridge connecting line-segments comprising a first conductive part and two second conductive parts respectively formed at two end of the first conductive part, each of the two second conductive parts electrically connected to one of the two adjacent second electrodes, respectively.

3. The touch panel device as claimed in claim 1, further comprising a conductive layer formed on the surface of the substrate contacting with the insulating layer and insulating with the second electrode groups.

4. The touch panel device as claimed in claim 1, further comprising a conductive layer formed on a surface of the substrate opposite to the surface contacting with the insulating layer.

5. The touch panel device as claimed in claim 1, wherein each bridge connecting wire comprises a first conductive part and a plurality of second conductive parts, each second conductive part electrically connecting with one of the second electrodes.

6. The touch panel device as claimed in claim 5, wherein each second conductive part is connected to an end of one of the second electrodes.

7. The touch panel device as claimed in claim 5, wherein each second conductive part is connected to a middle portion of one of the second electrodes.

8. The touch panel device as claimed in claim 1, wherein the insulating layer comprises a flat surface for forming the first electrode groups and the second electrodes of the second electrode groups.

9. The touch panel device as claimed in claim 1, wherein the first electrodes of each first electrode group are spaced arranged in a straight line.

10. The touch panel device as claimed in claim 9, wherein the first electrode groups are arranged in parallel.

11. The touch panel device as claimed in claim 10, wherein the second electrodes of each second electrode group are spaced arranged in a straight line and formed on the surface of the insulating layer.

12. The touch panel device as claimed in claim 11, wherein the second electrodes of the second electrode groups are spaced arranged in parallel on the surface of the insulating layer.

13. The touch panel device as claimed in claim 12, wherein the first electrodes and the second electrodes are alternately arranged to form a matrix on the surface of the insulating layer.

14. The touch panel device as claimed in claim 1, wherein the first electrode groups and the second electrodes of the second electrode groups corporately define a sensing plane.

15. The touch panel device as claimed in claim 13, further comprising an anti-scratch layer formed on a surface of the sensing plane.

16. A touch panel device comprising:

a transparent substrate;

a transparent insulating layer form on a surface of the substrate; and

a sensing unit comprising a plurality of first electrode groups and a plurality of second electrode groups, each second electrode group comprising a plurality of electrodes and a bridge connecting wires electrically connecting two adjacent electrodes,

wherein the first electrode groups and the electrodes of the second electrode groups are alternately formed on a surface of the insulating layer to define a sensing plane corporately, the bridge connecting wires are formed between the substrate and the sensing plane.

17. The touch panel device as claimed in claim 16, wherein the bridge connecting wire is formed on the surface of the transparent substrate and covered by the transparent insulating layer.

18. The touch panel device as claimed in claim 16, wherein the surface of the transparent insulating layer with the first electrode groups and the electrodes of the second electrode groups formed thereon is a flat surface.

19. The touch panel device as claimed in claim 16, wherein the bridge connecting wire of the second electrode groups comprises a plurality of bridge connecting line-segments, each bridge connecting line-segment comprising a first conductive part and two second conductive parts formed at two end of the first conductive part, the two second conductive parts electrically connected to two adjacent electrodes, respectively.

20. The touch panel device as claimed in claim 16, further comprising a conductive layer formed on the surface of the transparent substrate contacting with the insulating layer and insulated with the second electrode groups.

21. The touch panel device as claimed in claim 16, further comprising a conductive layer formed on a surface of the substrate opposite to the surface of the substrate contacting with the insulating layer.

22. The touch panel device as claimed in claim 16, wherein the bridge connecting wire comprises a first conductive part and a plurality of second conductive parts each electrically connected to one of the electrodes.