Touch apparatus, transparent scan electrode structure, and manufacturing method thereof

• US 8,558,722 B2
• Filed: 07/30/2010
• Issued: 10/15/2013
• Est. Priority Date: 12/10/2009
• Status: Active Grant

• Current Assignee: Industrial Technology Research Institute
• Original Assignee: Industrial Technology Research Institute
• Inventors: Yeh, Shao-Hsing, Shen, Yu-Tang, Kuo, Nai-Hao
• Primary Examiner(s): NGUYEN, HIEU P
• Application Number:
  US12/847,684
• Publication Number:
  US 20110140930A1
• Time in Patent Office: 1,173 Days
• Field of Search: 341/20, 341/155, 341/22, 314/1, 445/46, 345173-174, 345/208
• US Class Current: 341/20
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 apparatus, a transparent scan electrode, a geometric electrode structure and a manufacturing method thereof are disclosed. The transparent scan electrode structure comprises a first transparent scan electrode, a second transparent scan electrode and an isolative layer. The first transparent scan electrode comprises a first resistance region and a second resistance region. A resistance value of the second resistance region is higher than that of the first resistance region. The isolative layer is disposed between the first transparent scan electrode and the second transparent scan electrode.

Claims

1. A transparent scan electrode structure, comprising:

a first transparent scan electrode, comprising;

a first resistance region; and

a second resistance region, wherein a resistance value of the second resistance region is higher than that of the first resistance region;

a second transparent scan electrode; and

an isolative layer disposed between the first transparent scan electrode and the second transparent scan electrode.

2. The transparent scan electrode structure according to claim 1, wherein the first transparent scan electrode further comprises a contact electrode connected to the second resistance region for contacting the second transparent scan electrode.

3. The transparent scan electrode structure according to claim 2, further comprising a bump disposed on the contact electrode.

4. The transparent scan electrode structure according to claim 1, wherein the resistance value of the second resistance region falls within a 10˜

1000X interval of the first resistance region.

5. The transparent scan electrode structure according to claim 1, wherein the second resistance region comprises a geometric bent electrode.

6. The transparent scan electrode structure according to claim 5, wherein the geometric bent electrode is extended outward from the first resistance region and has consecutive bends to prolong the path length of the electrode.

7. The transparent scan electrode structure according to claim 1, wherein the ratio of the electrode length to the electrode width of the first second resistance region is a predetermined value, which makes the resistance value of the second resistance region higher than that of the first resistance region.

8. The transparent scan electrode structure according to claim 1, wherein the second resistance region is doped with a heterogeneous conductive material or a high polymer conductive material.

9. The transparent scan electrode structure according to claim 1, wherein the second transparent electrode comprises:

a third resistance region; and

a fourth resistance region, wherein a resistance value of the fourth resistance region is higher than that of the third resistance region.

10. The transparent scan electrode structure according to claim 9, wherein the second transparent scan electrode further comprises a contact electrode connected to the fourth resistance region for contacting the first transparent scan electrodes.

11. The transparent scan electrode structure according to claim 10, further comprising a bump disposed on the contact electrode.

12. The transparent scan electrode structure according to claim 9, wherein the resistance value of the fourth resistance region falls within 10˜

1000X interval of the second third resistance region.

13. The transparent scan electrode structure according to claim 9, wherein the fourth resistance region comprises a geometric bent electrode.

14. The transparent scan electrode structure according to claim 13, wherein the geometric bent electrode is extended outward from thethird resistance region and has consecutive bends to prolong the path length of the second transparent scan electrode.

15. The transparent scan electrode structure according to claim 9, wherein the ratio of the electrode length to the electrode width of the fourth resistance region is a predetermined value, which makes the resistance value of the fourth resistance region higher than that of the third resistance region.

16. The transparent scan electrode structure according to claim 9, wherein the fourth resistance region is doped with a heterogeneous conductive material or a high polymer conductive material.

17. The transparent scan electrode structure according to claim 1, wherein the first transparent scan electrode further comprises:

a third resistance region serially connected to the second resistance region.

18. A touch apparatus, comprising:

a touch panel, comprising;

a plurality of first transparent scan electrodes, each comprising;

a first resistance region;

a second resistance region, wherein a resistance value of the second resistance region is higher than that of the first resistance region;

a plurality of second transparent scan electrodes; and

an isolative layer disposed between the first transparent scan electrodes and the second transparent scan electrodes; and

a processing unit for sequentially scanning and driving the first transparent scan electrodes and the second transparent scan electrodes, wherein the first transparent scan electrodes being driven are set in a high level output state, the first transparent scan electrodes not being driven are set in a low level output state, the second transparent scan electrodes being driven are in a high impedance input state, and the second transparent scan electrodes not being driven are set in a low level output state.

19. The touch apparatus according to claim 18, wherein the first transparent scan electrode further comprises a contact electrode connected to the second resistance region for contacting the second transparent scan electrodes.

20. The touch apparatus according to claim 19, further comprising a bump disposed on the contact electrode.

21. The touch apparatus according to claim 18, wherein the resistance value of the second resistance region falls within a 10˜

1000X interval of the first resistance region.

22. The touch apparatus according to claim 18, wherein the second resistance region comprises a geometric bent electrode.

23. The touch apparatus according to claim 22, wherein the geometric bent electrode is extended outward from the first resistance region and has consecutive bends to prolong the path length of the electrode.

24. The touch apparatus according to claim 18, wherein the ratio of the electrode length to the electrode width of the second resistance region is a predetermined value, which makes the resistance value of the second resistance region higher than that of the first resistance region.

25. The touch apparatus according to claim 18, wherein the second resistance region is doped with a heterogeneous conductive material or a high polymer conductive material.

26. The touch apparatus according to claim 18, wherein the second transparent electrode comprises:

a third resistance region; and

a fourth resistance region, wherein a resistance value of the fourth resistance region is higher than that of the third resistance region.

27. The touch apparatus according to claim 26, wherein the second transparent scan electrodes further comprises a contact electrode connected to the fourth resistance region for contacting the first transparent scan electrodes.

28. The touch apparatus according to claim 27, further comprising a bump disposed on the contact electrode.

29. The touch apparatus according to claim 26, wherein the resistance value of the fourth resistance region falls within a 10˜

1000X interval of the third resistance region.

30. The touch apparatus according to claim 26, wherein the fourth resistance region comprises a geometric bent electrode.

31. The touch apparatus according to claim 30, wherein the geometric bent electrode is extended outward from the third resistance region and has consecutive bends to prolong the path length of the second transparent scan electrodes.

32. The touch apparatus according to claim 26, wherein the ratio of the electrode length to the electrode width of the fourth resistance region is a predetermined value, which makes the resistance value of the fourth resistance region higher than that of the third resistance region.

33. The touch apparatus according to claim 26, wherein the fourth resistance region is doped with a heterogeneous conductive material or a high polymer conductive material.

34. The touch apparatus according to claim 18, wherein the first transparent scan electrode further comprises:

a third resistance region serially connected to the second resistance region.

35. The touch apparatus according to claim 18, wherein the processing unit comprises:

a first scan driving circuit for sequentially scanning and driving the first transparent scan electrodes, wherein the first transparent scan electrodes being driven are set in a high level output state, and the first transparent scan electrodes not being driven are set in a low level output state;

a second scan driving circuit for sequentially scanning and driving the second transparent scan electrodes, wherein the second transparent scan electrodes being driven are in a high impedance input state, and the second transparent scan electrodes not being driven are set in a low level output state; and

a control circuit for controlling the first scan driving circuit and the second scan driving circuit.

36. A manufacturing method of a transparent scan electrode structure, comprising:

forming a first transparent scan electrode on a first substrate, wherein the first transparent scan electrode comprises a first resistance region and a second resistance region, and a resistance value of the second resistance region is higher than that of the first resistance region;

forming a second transparent scan electrode on a second substrate;

forming an isolative layer on the first substrate; and

vertically aligning and combining the first substrate and the second substrate are.

37. The manufacturing method according to claim 36, wherein the first transparent scan electrode further comprises a contact electrode connected to the second resistance region for contacting the second transparent scan electrodes.

38. The manufacturing method according to claim 37, further comprising:

disposing a bump on the contact electrode.

39. The manufacturing method according to claim 36, wherein the resistance value of the second resistance region falls within a 10˜

1000X interval of the first resistance region.

40. The manufacturing method according to claim 36, wherein the second resistance region comprises a geometric bent electrode.

41. The manufacturing method according to claim 40, wherein the geometric bent electrode is extended outward from the first resistance region and has consecutive bends to prolong the path length of the electrode.

42. The manufacturing method according to claim 36, wherein the ratio of the electrode length to the electrode width of the second resistance region is a predetermined value, which makes the resistance value of the second resistance region higher than that of the first resistance region.

43. The manufacturing method according to claim 36, wherein the first second resistance region is doped with a heterogeneous conductive material or a high polymer conductive material.

44. The manufacturing method according to claim 36, wherein the second transparent electrode comprises:

a third resistance region; and

a fourth resistance region, wherein a resistance value of the fourth resistance region is higher than that of the third resistance region.

45. The manufacturing method according to claim 43, wherein the second transparent scan electrode further comprises a contact electrode connected to the fourth resistance region for contacting the first transparent scan electrodes.

46. The manufacturing method according to claim 45, further comprising:

disposing a bump on the contact electrode.

47. The manufacturing method according to claim 44, wherein the resistance value of the fourth resistance region falls within a 10˜

1000X interval of the third resistance region.

48. The manufacturing method according to claim 44, wherein the fourth resistance region comprises a geometric bent electrode.

49. The manufacturing method according to claim 48, wherein the geometric bent electrode is extended outward from the third resistance region and has consecutive bends to prolong the path length of the second transparent scan electrodes.

50. The manufacturing method according to claim 44, wherein the ratio of the electrode length to the electrode width of the fourth resistance region is a predetermined value, which makes the resistance value of the fourth resistance region higher than that of the third resistance region.

51. The manufacturing method according to claim 44, wherein the fourth resistance region is doped with a heterogeneous conductive material or a high polymer conductive material.

52. The manufacturing method according to claim 36, wherein the first transparent scan electrodes further comprises:

a third resistance region serially connected to the second resistance region.