TOUCH PANEL DEVICE AND CIRCUITRY THEREOF

• US 20090321148A1
• Filed: 03/06/2009
• Published: 12/31/2009
• Est. Priority Date: 06/27/2008
• Status: Abandoned Application

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: YANG, CHIA FENG, HO, CHEN HSIANG, HSU, YU MIN
• Application Number:
  US12/399,342
• Publication Number:
  US 20090321148A1
• Time in Patent Office: Days
• US Class Current: 178/18.03
• CPC Class Codes: C21D 8/1211 Rapid solidification; Thin strip casting
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• 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
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch panel circuitry, which is coupled to a controller, comprises a plurality of electrode strips and a plurality of conductive traces. The electrode strip configured to provide touch signals has two strip ends. The conductive trace is configured for electrically coupling the two strip ends of the corresponding electrode strip so as to form a closed loop circuit. Each conductive trace is also connected to the controller to transmit signals generated by the corresponding electrode strip.

Claims

1. A touch panel circuitry coupled to a controller, comprising:

a plurality of substantially parallel first electrode strips configured for generating a touch signal, wherein each first electrode strip comprises two strip ends; and

a plurality of first conductive traces, each of the first conductive traces being configured for electrically coupling the two strip ends of the corresponding first electrode strip to form a closed-loop circuit and the closed-loop circuit coupled to the controller.

2. The touch panel circuitry of claim 1, wherein the first electrode strips are disposed along a first direction.

3. The touch panel circuitry of claim 2, further comprising:

a plurality of substantially parallel second electrode strips arrayed along a second direction, and being configured for generating a touch signal; and

a plurality of second conductive traces, each of the second conductive traces being configured for electrically coupling one strip end of the corresponding second electrode strip and the controller.

4. The touch panel circuitry of claim 3, wherein the first electrode strips and the second electrode strips are formed of transparent conductive material.

5. The touch panel circuitry of claim 4, wherein the transparent conductive material is indium tin oxide.

6. The touch panel circuitry of claim 3, wherein the first direction and the second direction are orthogonal.

7. A touch panel device, comprising:

a touch panel circuitry comprising;

a plurality of substantially parallel first electrode strips configured for generating a touch signal, wherein each first electrode strip has two strip ends; and

a plurality of first conductive traces, each of the conductive traces being configured for electrically coupling the two strip ends of the corresponding first electrode strip; and

a controller electrically coupled to each first electrode strip, configured for detecting a touch position.

8. The touch panel device of claim 7, wherein the first electrode strips are arrayed in a first direction.

9. The touch panel device of claim 8, further comprising:

a plurality of second electrode strips arrayed substantially in parallel in a second direction, and being configured for generating a touch signal; and

a plurality of second conductive traces, each of the second conductive traces being configured for electrically coupling one strip end of the corresponding second electrode strip to the controller.

10. The touch panel device of claim 9, wherein the first electrode strips and the second electrode strips are formed of transparent conductive material.

11. The touch panel device of claim 10, wherein the transparent conductive material is indium tin oxide.

12. The touch panel device of claim 9, wherein the first direction and the second direction are orthogonal.

13. A touch panel circuitry coupled to a controller, comprising:

a plurality of substantially parallel first electrode strips configured for generating a touch signal, wherein each first electrode strip comprises two strip ends; and

a plurality of first conductive traces, each of which is configured for electrically coupling the two strip ends of the corresponding first electrode strip and transmitting the touch signal generated therefrom to the controller.

14. The touch panel circuitry of claim 13, wherein the first electrode strips are disposed along a first direction.

15. The touch panel circuitry of claim 14, further comprising:

a plurality of substantially parallel second electrode strips arrayed along a second direction, and being configured for generating a touch signal; and

a plurality of second conductive traces, each of which is configured for electrically coupling one strip end of the corresponding second electrode strip and the controller.

16. The touch panel circuitry of claim 14, wherein the first electrode strips and the second electrode strips are formed of transparent conductive material.

17. The touch panel circuitry of claim 16, wherein the transparent conductive material is indium tin oxide.

18. The touch panel circuitry of claim 15, wherein the first direction and the second direction are orthogonal.