TOUCH PANEL AND METHOD FOR MANUFACTURING THE SAME

• US 20110227858A1
• Filed: 05/12/2010
• Published: 09/22/2011
• Est. Priority Date: 03/16/2010
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Jung, Gang-Seob, Kim, Cheol-Se, Hwang, Sang-Soo, An, Su-Chang
• Granted Patent: US 8,947,370 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0317 in co-operation with a patterned surface, e.g. absolute position or relative movement detection for an optical mouse or pen positioned with respect to a coded surface
• 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 touch panel includes a plurality of first electrode patterns being serially connected by a plurality of first connection patterns; a plurality of second electode patterns being serially connected by a plurality of second connection patterns; and a plurality of routing lines; wherein at least two of the plurality of first electrode patterns are connected to at least one of the plurality of routing lines.

Claims

1. A touch panel, comprising:

a plurality of first electrode patterns being serially connected by a plurality of first connection patterns;

a plurality of second electode patterns being serially connected by a plurality of second connection patterns; and

a plurality of routing lines;

wherein at least two of the plurality of first electrode patterns are connected to at least one of the plurality of routing lines.

2. The touch panel according to claim 1, wherein at least one of the plurality of first connection patterns and at least one of the plurality of routing lines are formed on the same layer.

3. The touch panel according to claim 1, wherein at least one of the plurality of first connection patterns includes at least one metal selected from molybdenum (Mo), copper (Cu), silver (Ag), chromium (Cr), aluminum (Al), aluminum neodymium (AlNd) and molybdenum titanium (MoTi), or a laminate including the at least one metal.

47. The touch panel according to claim 1, further comprising a polarization plate on the plurality of first electrodes and the plurality of second electrodes.

48. The touch panel according to claim 47, wherein the polarization plate has a thickness of about 135 μ

m to about 270 μ

m.

4. A touch panel, comprising:

a plurality of first electrode patterns being serially connected by a plurality of first connection patterns;

a plurality of second electode patterns being serially connected by a plurality of second connection patterns;

a plurality of routing lines; and

a plurality of connection parts,

wherein at least two of the plurality of first electrode patterns are connected to one of the plurality of connection parts, and at least one of the plurality of routing lines is electrically connected to the one of the plurality of connection parts.

5. The touch panel according to claim 4, wherein the at least one of the plurality of connection parts is a routing contact line.

6. The touch panel according to claim 5, wherein at least one of the plurality of first connection patterns, at least one of the plurality of routing lines, and the routing contact line are formed on the same layer.

7. The touch panel according to claim 5, wherein at least one of the plurality of first connection patterns, the at least one of the plurality of routing lines, and the routing contact line are formed of at least one metal selected from molybdenum (Mo), copper (Cu), silver (Ag), chromium (Cr), aluminum (Al), aluminum neodymium (AlNd) and molybdenum titanium (MoTi), or a laminate including the at least one metal.

8. The touch panel according to claim 4, wherein the at least one of the plurality of connection parts has a patterned shape.

9. The touch panel according to claim 8, wherein at least one of the plurality of first electrode patterns, at least one of the plurality of second electode patterns, and the at least one of the plurality of connection parts are formed on the same layer.

10. The touch panel according to claim 8, wherein at least one of the plurality of first electrode patterns, at least one of the plurality of second electode patterns, and the at least one of the plurality of connection parts are formed of a transparent material.

11. A touch panel, comprising:

a plurality of first electrode serials including a first series of a plurality of first electrodes serially connected by a plurality of first connection patterns and a second series of a plurality of first electrodes serially connected by a plurality of first connection patterns; and

at least one redundancy pattern,

wherein an electrode of the first series is connected to an electrode of the second series by the at least one redundancy pattern.

12. The touch panel according to claim 11, wherein the first series of the plurality of first electrodes, the second series of the plurality of first electrodes, and the at least one redundancy pattern are formed on the same layer.

13. The touch panel according to claim 11, wherein the first series of the plurality of first electrodes, the second series of the plurality of first electrodes, and the at least one redundancy pattern are formed of a transparent material.

14. A touch panel, comprising:

a plurality of first electrode serials including a first series of a plurality of first electrodes serially connected by a plurality of first connection patterns, and a second series of a plurality of first electrodes serially connected by a plurality of first connection patterns;

a plurality of second electrode serials including a third series of a plurality of second electrodes serially connected by a plurality of second connection patterns, and a fourth series of a plurality of second electrodes serially connected by a plurality of second connection patterns;

at least one first redundancy pattern; and

at least one second redundancy pattern,

wherein an electrode of the first series is connected to an electrode of the second series by the at least one first redundancy pattern, and

an electrode of the third series is connected to an electrode of the fourth series by the at least one second redundancy pattern.

15. The touch panel according to claim 14, wherein the plurality of first electrode serials, the plurality of second electrode serials, and the at least one second redundancy pattern are formed on the same layer, and the at least one first redundancy pattern is formed on a different layer.

16. The touch panel according to claim 14, wherein the plurality of first electrode serials, the plurality of second electrode serials, and the at least one second redundancy pattern are formed of a transparent material.

17. The touch panel according to claim 14, wherein the at least one first redundancy pattern is formed of at least one metal selected from molybdenum (Mo), copper (Cu), silver (Ag), chromium (Cr), aluminum (Al), aluminum neodymium (AlNd) and molybdenum titanium (MoTi), or a laminate including the at least one metal.

18. A touch panel, comprising:

a substrate,

a plurality of first electrode serials including a first series of a plurality of first electrodes serially connected by a plurality of first connection patterns, and a second series of a plurality of first electrodes serially connected by a plurality of first connection patterns;

a plurality of second electrode serials including a third series of a plurality of second electrodes serially connected by a plurality of second connection patterns, and a fourth series of a plurality of second electrodes serially connected by a plurality of second connection patterns;

at least one first redundancy pattern;

at least one second redundancy pattern;

a plurality of first routing lines;

a plurality of second routing lines;

a plurality of first connection parts; and

a plurality of second connection parts,

wherein the first series and the second series are electrically connected to one of the plurality of first connection parts,

the third series and the fourth series are electrically connected to one of the plurality of second connection parts,

at least one of the plurality of first routing lines is connected to the one of the plurality of first connection parts;

at least one of the plurality of second routing lines is connected to the one of the plurality of second connection parts,

an electrode of the first series is connected to an electrode of the second series by the at least one first redundancy pattern, and

an electrode of the third series is connected to an electrode of the fourth series by the at least one second redundancy pattern.

19. The touch panel according to claim 18, wherein the plurality of first electrode serials are arranged in a first direction and the plurality of second electrode serials are arranged in a second direction that crosses the first direction.

20. The touch panel according to claim 18, wherein the at least one first redundancy pattern is integrated with the electrode of the first series and the electrode of the second series in the first direction.

21. The touch panel according to claim 18, wherein the at least one second redundancy pattern is integrated with the electrode of the third series and the electrode of the fourth series in the second direction.

22. The touch panel according to claim 18, wherein a distance between a center portion of at least one of the plurality of first electrodes and a center portion of at least one of the plurality of second electrodes is is about 0.5 mm to about 5.5 mm.

23. The touch panel according to claim 22, wherein a distance between the center portion of the at least one of the plurality of first electrodes and the center portion of the at least one of the plurality of second electrodes is about 1 mm to about 3 mm.

24. The touch panel according to claim 22, wherein a distance between the at least one of the plurality of first electrode and the at least one of the plurality of second electrode adjacent to each other is about 10 μ

m to about 30 μ

m.

25. The touch panel according to claim 18, wherein the plurality of first electrodes and the plurality of second electrodes are transparent electrodes.

26. The touch panel according to claim 18, wherein the plurality of first electrodes and the plurality of second electrodes are formed on the same layer.

27. The touch panel according to claim 18, wherein the one of the plurality of first connection parts is formed in the same layer and is of the same material as the the plurality of first electrodes and the plurality of second electrodes.

28. The touch panel according to claim 18, wherein the plurality of first electrode serials includes n series of the plurality of first electrodes serially connected by the plurality of first connection patterns (n being an integer greater than 3),

the plurality of second electrode serials includes an m series of the plurality of second electrodes serially connected by the plurality of second connection patterns (m being an integer greater than 3),

the n series are connected to the one of the plurality of first connection parts, and

the m series are connected to the one of the plurality of second connection parts.

29. The touch panel according to claim 18, further comprising a plurality of pad electrodes connected to the plurality of first routing lines and the plurality of second routing lines.

30. The touch panel according to claim 25, wherein the transparent electrodes are composed of at least one selected from indium tin oxide (ITO), indium zinc oxide (IZO), antimony zinc oxide (AZO), ZnO and SnO₂ or a laminate thereof.

31. The touch panel according to claim 18, wherein at least one of the plurality of first connection patterns is integrated with the plurality of first electrodes or at least one of the plurality of second connection patterns is integrated with the plurality of second electrodes.

32. The touch panel according to claim 31, wherein the at least one of the plurality of first connection pattern or the at least one of the plurality of second connection patterns has a width of about 10 μ

m to about 500 μ

m.

33. The touch panel according to claim 18, wherein at least one of the plurality of first connection patterns or at least one of the plurality of second connection patterns is composed of a metal.

34. The touch panel according to claim 18, wherein at least one of the plurality of first connection patterns or at least one of the plurality of second connection patterns is a laminate of a metal and a transparent electrode.

35. The touch panel according to claim 33, wherein the metal constituting the at least one of the plurality of first connection patterns or the at least one of the plurality of second connection patterns has a width of about 3 μ

m to about 20 μ

m.

36. The touch panel according to claim 34, wherein the metal constituting the at least one of the plurality of first connection patterns or the at least one of the plurality of second connection patterns has a width of about 3 μ

m to about 20 μ

m.

37. The touch panel according to claim 18, wherein at least one of the first connection patterns or at least one of the second connection patterns includes at least one metal selected from molybdenum (Mo), copper (Cu), silver (Ag), chromium (Cr), aluminum (Al), aluminum neodymium (AlNd) and molybdenum titanium (Mori), or a laminate including the at least one metal.

38. The touch panel according to claim 33, further comprising a first insulating layer between the metal constituting the at least one of the plurality of first connection patterns or the at least one of the plurality of second connection patterns, and the pluralities of first and second electrodes.

39. The touch panel according to claim 38, wherein the first insulating layer includes one selected from a nitride layer, an oxide layer, a nitride oxide layer (SiNxOy) and an organic material layer, with a thickness of about 0.1 μ

m to about 1 μ

m.

40. The touch panel according to claim 38, wherein the pluralities of first and second electrodes are formed on the first insulating layer.

41. The touch panel according to claim 18, further comprising a dummy pattern disposed between at least one of the plurality of first electrodes and at least one of the plurality of second electrodes that are adjacent to each other.

42. The touch panel according to claim 41, wherein the dummy pattern has a width of about 10 μ

m to about 240 μ

m.

43. The touch panel according to claim 42, wherein a distance between the at least one of the plurality of first electrodes and the dummy pattern, and a distance between the at least one of the plurality of second electrodes and the dummy pattern are about 10 μ

m to about 30 μ

m.

44. The touch panel according to claim 18, wherein at least one of the plurality of first electrodes and at least one of the plurality of second electrodes have a polygonal shape, a diamond shape or a circular shape.

45. The touch panel according to claim 18, further comprising a second insulating layer on the plurality of first electrodes and the plurality of second electrodes.

46. The touch panel according to claim 45, wherein the second insulating layer includes one selected from a nitride layer, an oxide layer, a nitride oxide layer (SiNxOy) and an organic material layer with a thickness of about 0.1 μ

m to about 1 μ

m.

49. The touch panel according to claim 18, wherein a variation in capacitance by a fringe field between at least one of the plurality of first electrodes and at least one of the plurality of second electrodes in a portion touched by an input means is greater than a variation in capacitance when the at least one of the plurality of first electrodes or the at least one of the plurality of second electrodes is grounded.

50. The touch panel according to claim 18, wherein the touch panel is located on a display device.

51. The touch panel according to claim 50, wherein a substrate of the touch panel uses one substrate of the display device.