CONNECTION STRUCTURE BETWEEN ELECTRODES AND TOUCH PANEL

• US 20100295819A1
• Filed: 05/18/2010
• Published: 11/25/2010
• Est. Priority Date: 05/19/2009
• Status: Abandoned Application

• Current Assignee: Optrex Corporation (Kyocera Corporation)
• Original Assignee: Optrex Corporation (Kyocera Corporation)
• Inventors: NISHIDA, Shuji, OTANI, Shinju, OZEKI, Masao
• Application Number:
  US12/782,221
• Publication Number:
  US 20100295819A1
• Time in Patent Office: Days
• US Class Current: 345/174
• 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 connection structure between electrodes includes a center electrode disposed as a transparent electrode on a transparent substrate; paired side electrodes disposed as transparent electrodes on the transparent substrate so as to place the center electrode therebetween; a bridge wire serving as a wire to connect between the paired side electrodes; and an electrically insulating film disposed between the center electrode and the bridge wire; wherein the bridge wire comprises a metal material; the electrically insulating film is disposed so as to be out of contact with the side electrodes at least within a certain range; and the bridge wire is disposed so as to be brought into direct contact with the transparent substrate in a gap region, the gap region being formed by disposing the electrically insulating film so as to bring out of contact with the side electrodes.

Claims

1. A connection structure between electrodes, comprising:

a center electrode disposed as a transparent electrode on a transparent substrate;

paired side electrodes disposed as transparent electrodes on the transparent substrate so as to place the center electrode therebetween;

a bridge wire serving as a wire to connect between the paired side electrodes; and

an electrically insulating film disposed between the center electrode and the bridge wire;

wherein the bridge wire comprises a metal material;

the electrically insulating film is disposed so as to be out of contact with the side electrodes at least within a certain range; and

the bridge wire is disposed so as to be brought into direct contact with the transparent substrate in a gap region, the gap region being formed by disposing the electrically insulating film so as to be out of contact with the side electrodes.

2. The connection structure between electrodes according to claim 1, wherein the electrically insulating film is disposed so as to be out of contact with the side electrodes at least within a region where the bridge wire is disposed.

5. The connection structure between electrodes according to claim 1, wherein the electrically insulating film comprises a resin material.

3. A connection structure between electrodes, comprising:

a center electrode disposed as a transparent electrode on a transparent substrate;

paired side electrodes disposed as transparent electrodes on the transparent substrate so as to place the center electrode therebetween;

a bridge wire serving as a wire to connect between the paired side electrodes; and

an electrically insulating film disposed between the center electrode and the bridge wire;

wherein the bridge wire comprises a metal material; and

the bridge wire is first disposed on a crossing region, followed by disposing the electrically insulating film and disposing the paired side electrodes;

the electrically insulating film disposed so as not only to cover intermediate portion of the bridge wire but also to expose opposed edges of the bridge wire, and the opposed edges of the bridge wire are connected to the paired side electrodes; and

the electrically insulating film is disposed so as to be out of contact with the paired side electrodes.

6. The connection structure between electrodes according to claim 3, wherein the electrically insulating film comprises a resin material.

4. A connection structure between electrodes, comprising:

a center electrode disposed as a transparent electrode on a transparent substrate;

paired side electrodes disposed as transparent electrodes on the transparent substrate so as to place the center electrode therebetween;

an electrically insulating film disposed so as to bridge a portion of the center electrode; and

a bridge wire bridging the electrically insulating film to serve as a wire to connect between the paired side electrodes;

wherein the bridge wire comprises a metal material; and

the electrically insulating film disposed so as to bridge the portion of the center electrode has both edges extending so as to be out of contact the paired side electrodes and forming a gap region so as to prevent both edges from being brought into contact with the side electrodes, and the bridge wire is brought into direct contact with the transparent substrate in the gap region.

7. The connection structure between electrodes according to claim 4, wherein the electrically insulating film comprises a resin material.

8. A touch panel comprising a center electrode disposed as a transparent electrode on a transparent substrate;

and paired side electrodes disposed on the transparent substrate so as to place the center electrode therebetween, the paired side electrodes being connected together without being brought into electrical contact with the center electrode such that electrode arrays cross on a single side of the transparent substrate;

the touch panel further comprising;

a bridge wire serving as a wire to connect between the paired side electrodes; and

an electrically insulating film disposed between the center electrode and the bridge wire;

wherein the bridge wire comprises a metal material;

the electrically insulating film is disposed so as to be out of contact with the side electrode at least within a certain range; and

the bridge wire is disposed so as to be brought into direct contact with the transparent substrate in a gap region, the gap region being formed by disposing the electrically insulating film so as to be out of contact with the side electrode.

9. The touch panel according to claim 8, wherein the electrically insulating film is disposed so as to be out of contact with the side electrode at least within a region where the bridge wire is disposed.

12. The touch panel according to claim 8, wherein the electrically insulating film comprises a resin material.

10. A touch panel comprising a center electrode disposed as a transparent electrode on a transparent substrate;

and paired side electrodes disposed as transparent electrodes on the transparent substrate so as to place the center electrode therebetween, the paired side electrodes being connected together without being brought into electrical contact with the center electrode such that electrode arrays cross on a single side of the transparent substrate;

the touch panel further comprising;

a bridge wire serving as a wire to connect between the paired side electrodes; and

an electrically insulating film disposed between the center electrode and the bridge wire;

wherein the bridge wire comprises a metal material; and

the bridge wire is first disposed on a crossing region, followed by disposing the electrically insulating film and disposing the paired side electrodes;

the electrically insulating film disposed so as not only to cover intermediate portion of the bridge wire but also to expose opposed edges of the bridge wire, and the opposed edges of the bridge wire are connected to the paired side electrodes; and

the electrically insulating film is disposed so as to be out of contact with the paired side electrodes.

13. The touch panel according to claim 10, wherein the electrically insulating film comprises a resin material.

11. A touch panel comprising a center electrode disposed as a transparent electrode on a transparent substrate;

and paired side electrodes disposed as transparent electrodes on the transparent substrate so as to place the center electrode therebetween, the paired side electrodes being connected together without being brought into electrical contact with the center electrode such that electrode arrays cross on a single side of the transparent substrate;

the touch panel further comprising;

an electrically insulating film disposed so as to bridge a portion of the center electrode; and

a bridge wire bridging the electrically insulating film to serve as a wire to connect between the paired side electrodes;

wherein the bridge wire comprises a metal material; and

the electrically insulating film disposed so as to bridge the portion of the center electrode has both edges extending so as to be out of contact the paired side electrodes and forming a gap region to prevent both edges from being brought into contact with the side electrodes, and the bridge wire is brought into direct contact with the transparent substrate in the gap region.

14. The touch panel according to claim 11, wherein the electrically insulating film comprises a resin material.