Touch panel display device with signal transmission channel

• US 20080252612A1
• Filed: 04/14/2008
• Published: 10/16/2008
• Est. Priority Date: 04/13/2007
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: Innolux Display Corporation (InnoLux Corporation)
• Inventors: Yu, Chih-Chia
• Granted Patent: US 8,294,674 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

An exemplary touch panel display device (2) includes a display device (26) including a driving chip and a touch panel (20). The touch panel includes a transparent conductive substrate (21) including a first electrode and a second electrode, and a transparent conductive film (22) including a third electrode and a fourth electrode. The four electrodes are connected to the driving chip via a signal transmission channel.

Claims

1. A touch panel display device, comprising:

a signal transmission channel;

a display device comprising a driving chip; and

a touch panel comprising;

a transparent conductive substrate comprising a first electrode and a second electrode; and

a transparent conductive film comprising a third electrode and a fourth electrode;

wherein the four electrodes are connected to the driving chip via the signal transmission channel.

2. The touch panel display device as claimed in claim 1, wherein the display device comprises a substrate, the driving chip is on the substrate.

3. The touch panel display device as claimed in claim 2, wherein the substrate is a glass substrate.

4. The touch panel display device as claimed in claim 2, wherein the signal transmission channel comprises a first pad, a second pad, a third pad, a fourth pad, a channel, a first adhesion conductive object, a second adhesion conductive object, a first conductive object, a second conductive object, a third conductive object, a fourth conductive object, a first weld, a second weld, a third weld, a fourth weld, a first adhesion wire, and a second adhesion wire;

the four pads are disposed on a corner of the substrate, the four pads are connected to the driving chip via a wire, respectively;

the channel is disposed on a corner of the transparent conductive substrate and accommodates the four conductive objects;

the first adhesion conductive object is disposed adjacent to a first side of the channel, and the second adhesion conductive object is disposed adjacent to a second side of the channel opposite to the first side;

the first adhesion conductive object is connected to the first electrode via a wire, and the second adhesion conductive object is connected to the second electrode via a wire;

the four welds are disposed on a corner of the transparent conductive film;

the first weld is connected to the first adhesion wire, the second weld is connected to the second adhesion wire, the third weld is connected to the third electrode via a wire, and the fourth weld is connected to the fourth electrode via a wire;

the first adhesion wire is contacted to the first adhesion conductive object, and the second adhesion wire is contacted to the second adhesion conductive object;

the first conductive object is sandwiched between the first pad and the first weld, the second conductive object is sandwiched between the second pad and the second weld, the third conductive object is sandwiched between the third pad and the third weld, and the fourth conductive object is sandwiched between the fourth pad and the fourth weld.

5. The touch panel display device as claimed in claim 4, wherein the channel penetrates the transparent conductive substrate and its cross-section is rectangular.

6. The touch panel display device as claimed in claim 5, wherein the channel is a hole of the transparent conductive substrate.

7. The touch panel display device as claimed in claim 5, wherein the channel is a notch of the transparent conductive substrate.

8. The touch panel display device as claimed in claim 4, wherein the four pads are indium tin oxide pads.

9. The touch panel display device as claimed in claim 4, wherein the four conductive objects are conductive foams.

10. The touch panel display device as claimed in claim 4, wherein the four conductive objects are conductive adhesives.

11. The touch panel display device as claimed in claim 4, wherein the four welds are indium tin oxide welds.

12. The touch panel display device as claimed in claim 4, wherein the adhesion wires are silver plasma wires.

13. The touch panel display device as claimed in claim 4, wherein the wires are silver plasma wires.

14. The touch panel display device as claimed in claim 4, wherein the first electrode and the second electrode are parallel to a first direction, respectively;

the third electrode and the fourth electrode are parallel to a second direction vertical to the first direction, respectively.

15. The touch panel display device as claimed in claim 4, wherein the transparent conductive substrate is an indium tin oxide glass substrate, the transparent conductive film is an indium tin oxide film.

16. The touch panel display device as claimed in claim 4, wherein the display device is a liquid crystal display.

17. The touch panel display device as claimed in claim 1, wherein the touch panel further comprises a cover, an adhesive tape, and a plurality of spacers;

the transparent conductive substrate is adhered with the transparent conductive film via the adhesive tape;

the plurality of spacers are dispersed between the transparent conductive substrate and the transparent conductive film;

the cover is on an outer surface of the transparent conductive film.

19. The touch panel display device as claimed in claim 2, wherein the display device comprises a driving chip, the touch panel comprises a first electrode, a second electrode, a third electrode, and a fourth electrode;

the driving chip is configured for transmitting the voltage signals, the four electrodes are configured for receiving the voltage signals.

20. The touch panel display device as claimed in claim 19, wherein the signal transmission channel comprises a first pad, a second pad, a third pad, a fourth pad, a channel, a first adhesion conductive object, a second adhesion conductive object, a first conductive object, a second conductive object, a third conductive object, a fourth conductive object, a first weld, a second weld, a third weld, a fourth weld, a first adhesion wire, and a second adhesion wire;

the driving chip transmits voltage signals to the first electrode via the first pad, the first conductive object, the first weld, the first adhesion wire, the first adhesion conductive object, and a wire connected between the first adhesion conductive object and the first electrode;

the driving chip transmits voltage signals to the second electrode via the second pad, the second conductive object, the second weld, the second adhesion wire, the second adhesion conductive object, and a wire connected between the second adhesion conductive object and the second electrode;

the driving chip transmits voltage signals to the third electrode via the third pad, the third conductive object, the third weld, and a wire connected between the third weld and the third electrode;

the driving chip transmits voltage signals to the fourth electrode via the fourth pad, the fourth conductive object, the fourth weld, and a wire connected between the fourth weld and the fourth electrode.

18. A touch panel display device, comprising:

a display device;

a touch panel; and

a signal transmission channel disposed in the touch panel;

wherein the display device transmits voltage signals to the touch panel via the signal transmission channel.