Touch Panel Device

• US 20090242283A1
• Filed: 03/11/2009
• Published: 10/01/2009
• Est. Priority Date: 03/25/2008
• Status: Abandoned Application

• Current Assignee: Elan Microelectronics Corporation
• Original Assignee: Elan Microelectronics Corporation
• Inventors: CHIU, Yen-Ch
• Application Number:
  US12/402,456
• Publication Number:
  US 20090242283A1
• Time in Patent Office: Days
• US Class Current: 178/20.10
• 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

In one exemplary embodiment, a touch panel device includes a substrate, an insulating layer, a number of first electrode groups and a number of second electrode groups. The first electrode groups are formed on the first surface of the insulating layer. Each of the first electrode groups includes a number of first electrodes and a number of first leads. The first electrodes are spaced with each other. The first leads electrically connect each two adjacent first electrodes. Each of the second electrode groups includes a number of second electrodes and a number of bridge conductors electrically connecting each two adjacent second electrodes. The second electrodes are spaced with each other and are arranged on the first surface of the insulating layer. The first electrodes and the second electrodes are arranged in a staggered manner. The bridge conductors are formed on the second surface of the insulating layer.

Claims

1. A touch panel device, comprising:

a substrate;

an insulating layer formed on the substrate, the insulating layer comprising a first surface adjacent to the substrate and a second surface away from the substrate;

a plurality of first electrode groups formed on the first surface of the insulating layer, each of the first electrode groups comprising a plurality of first electrodes and a plurality of first leads, said plurality of first electrodes spacing with each other and being arranged on the first surface of the insulating layer, said plurality of first leads electrically connecting each two adjacent first electrodes; and

a plurality of second electrode groups, each of the second electrode groups comprising a plurality of second electrodes and a plurality of bridge conductors electrically connecting each two adjacent second electrodes, said plurality of second electrodes spacing with each other and being arranged on the first surface of the insulating layer, the first electrodes and the second electrodes being arranged in a staggered manner, the bridge conductors being formed on the second surface of the insulating layer.

2. The touch panel device as claimed in claim 1, wherein each of the bridge conductors comprising a first conducting portion and two second conducting portions formed on two opposite ends of the first conducting portion, the second conducting portions are respectively connected to two adjacent second electrodes.

3. The touch panel device as claimed in claim 2, wherein the first conducting portion and the two first conducting portions are integrally formed.

4. The touch panel device as claimed in claim 1, wherein the bridge conductor for each of the second electrode groups comprises a first conducting portion and a plurality of second conducting portions, each of the second conducting portions is electrically connected to a corresponding second electrode.

5. The touch panel device as claimed in claim 1, further comprising an insulating adhesive layer arranged on the second surface of the insulating layer, the insulating layer covering the bridge conductors of the second electrode groups.

6. The touch panel device as claimed in claim 5, further comprising an anti-wearing layer arranged on a side of the insulating layer that is away from the second surface of the insulating layer.

7. The touch panel device as claimed in claim 6, further comprising an electrically conductive layer arranged on a side of the substrate that is away from the insulating layer.

8. The touch panel device as claimed in claim 5, wherein the substrate is a transparent film.

9. The touch panel device as claimed in claim 8, further comprising an anti-wearing layer arranged on a side of the substrate that is away from the insulating layer.

10. The touch panel device as claimed in claim 9, further comprising an electrically conductive layer arranged on the second surface of the insulating layer, the electrically conductive layer being covered by the insulating adhesive layer and being electrically isolated from the bridge conductors of the second electrode groups.

11. A touch panel device, comprising:

a substrate including a plain surface;

an insulating layer formed on the substrate; and

a capacitive sensing unit comprising;

a plurality of first electrode groups covered by the insulating layer, each of the first electrode groups comprising a plurality of first electrode and a plurality of first lead configured for electrically connecting each two adjacent first electrodes, the first electrodes being spaced with each other and being formed on the plain surface of the substrate; and

a plurality of second electrode groups, each of the second electrode groups comprising a plurality of second electrodes and a bridge conductor configured for electrically connecting each two adjacent second electrodes, the second electrodes being spaced with each other and being formed on the plain surface of the substrate, the first electrodes and the second electrodes being arranged in a staggered manner, the second electrodes being covered by the insulating layer, the first electrodes and the second electrodes cooperatively defining a sensing surface, the bridge conductor is disposed on the insulating layer such that the sensing surface is arranged between the substrate and the bridge conductors.

12. The touch panel device as claimed in claim 11, wherein each of the bridge conductors comprising a first conducting portion and two second conducting portions formed on two opposite ends of the first conducting portion, the second conducting portions are respectively connected to two adjacent second electrodes.

13. The touch panel device as claimed in claim 12, wherein the first conducting portion and the two first conducting portions are integrally formed.

14. The touch panel device as claimed in claim 11, wherein the bridge conductor for each of the second electrode groups comprises a first conducting portion and a plurality of second conducting portions, each of the second conducting portions is electrically connected to a corresponding second electrode.

15. The touch panel device as claimed in claim 11, further comprising an insulating adhesive layer arranged on the second surface of the insulating layer, the insulating layer covering the bridge conductors of the second electrode groups.

16. The touch panel device as claimed in claim 15, further comprising an anti-wearing layer arranged on a side of the insulating layer that is away from the second surface of the insulating layer.

17. The touch panel device as claimed in claim 16, further comprising an electrically conductive layer arranged on a side of the substrate that is away from the insulating layer.

18. The touch panel device as claimed in claim 15, wherein the substrate is a transparent film.

19. The touch panel device as claimed in claim 18, further comprising an anti-wearing layer arranged on a side of the substrate that is away from the insulating layer.

20. The touch panel device as claimed in claim 19, further comprising a electrically conductive layer arranged on the second surface of the insulating layer, the electrically conductive layer being covered by the insulating adhesive layer and being electrically isolated from the bridge conductors of the second electrode groups.