TOUCH PANEL AND TOUCH DISPLAY PANEL

• US 20150022739A1
• Filed: 07/17/2014
• Published: 01/22/2015
• Est. Priority Date: 07/17/2013
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Chen, Chien-Chung, Chen, Yung-Lin, Kang, Hen-Ta
• Application Number:
  US14/333,528
• Publication Number:
  US 20150022739A1
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G06F 1/1643 the display being associated to a digitizer, e.g. laptops that can be used as penpads details related to the relative motion of the display enclosure with respect to the body enclosure, e.g. to move between laptop and tablet PC configuration G06F1/1615
• 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 3/0412 Digitisers structurally integrated in a display
• 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

The present invention provides a touch panel. The touch panel includes a substrate, a touch sensing device, and an optical matching layer. The touch sensing device is disposed on one side of the substrate, and includes an electrode pattern. The electrode pattern includes silver or silver alloy. At least one side of the substrate has the optical matching layer disposed thereon.

Claims

1. A touch panel, comprising:

a substrate;

a touch sensing device, disposed on the substrate, and the touch sensing device comprising a first electrode pattern; and

a first optical matching layer, disposed on the substrate.

2. The touch panel according to claim 1, wherein the substrate is disposed between the touch sensing device and the first optical matching layer.

3. The touch panel according to claim 1, wherein the touch sensing device is disposed between the first optical matching layer and the substrate.

4. The touch panel according to claim 3, further comprising a second optical matching layer disposed on the substrate, and the substrate being disposed between the first optical matching layer and the second optical matching layer.

5. The touch panel according to claim 1, wherein the first optical matching layer is disposed between the touch sensing device and the substrate.

6. The touch panel according to claim 5, further comprising a second optical matching layer, disposed on the substrate, and the substrate being disposed between the first optical matching layer and the second optical matching layer.

7. The touch panel according to claim 5, further comprising a second optical matching layer, disposed on the substrate, and the touch sensing device being disposed between the first optical matching layer and the second optical matching layer.

8. The touch panel according to claim 1, wherein a refractive index of the first optical matching layer is between 1.6 and 1.8.

9. The touch panel according to claim 1, wherein a thickness of the first optical matching layer is between 5 nanometers and 100 nanometers.

10. The touch panel according to claim 1, wherein the first optical matching layer comprises alumina (Al₂O₃), aluminum oxynitride (AlO_xN_y), silicon oxynitride (SiO_xN_y), yttrium oxide (Y₂O₃), ytterbium oxide (Yb₂O₃), magnesium oxide (MgO), holmium fluoride (HoF₃), beryllium oxide (BeO) or cerium fluoride (CeF₃).

11. The touch panel according to claim 1, wherein the first electrode pattern comprises a transparent dielectric film and a first metal layer.

12. The touch panel according to claim 11, wherein a refractive index of the transparent dielectric film is between 1.7 and 2.3.

13. The touch panel according to claim 1, wherein the first electrode pattern comprises a first transparent conductive layer and a first metal layer.

14. The touch panel according to claim 13, wherein the first metal layer comprises silver or silver alloy.

15. The touch panel according to claim 14, wherein the silver alloy comprises palladium or palladium-copper alloy.

16. The touch panel according to claim 13, wherein a refractive index of the first transparent conductive layer is between 1.7 and 2.3.

17. The touch panel according to claim 13, wherein the first metal layer and the first transparent conductive layer are disposed on the substrate sequentially.

18. The touch panel according to claim 13, wherein the first transparent conductive layer and the first metal layer are disposed on the substrate sequentially.

19. The touch panel according to claim 13, wherein the first electrode pattern further comprises a second transparent conductive layer, and the first metal layer is disposed between the first transparent conductive layer and the second transparent conductive layer.

20. The touch panel according to claim 19, wherein the first electrode pattern further comprises a second metal layer, and the second transparent conductive layer is disposed between the first metal layer and the second metal layer.

21. The touch panel according to claim 13, wherein the first electrode pattern further comprises a second metal layer, and the first transparent conductive layer is disposed between the first metal layer and the second metal layer.

22. The touch panel according to claim 1, wherein the first electrode pattern has a plurality of first gaps, and the first optical matching layer covers the first electrode pattern and the first gaps.

23. The touch panel according to claim 1, wherein the touch sensing device further comprises a second electrode pattern, there is a plurality of second gaps between the first electrode pattern and the second electrode pattern, and the first optical matching layer covers the first electrode pattern, the second electrode pattern and the second gaps.

24. The touch panel according to claim 23, wherein the first electrode pattern is a transparent electrode pattern, and the second electrode pattern is a transparent electrode pattern.

25. The touch panel according to claim 1, wherein the first electrode pattern comprises silver or silver alloy.

26. The touch panel according to claim 1, wherein the substrate comprises a touching region and a periphery region disposed at at least one side of the touching region, the touch panel further comprises a decoration layer, and the decoration layer is disposed in the periphery region.

27. The touch panel according to claim 26, wherein the decoration layer is disposed on the substrate, and decoration layer and the touch sensing device are disposed at a same side of the substrate.

28. The touch panel according to claim 26, wherein the decoration layer is disposed on the substrate, and decoration layer and the touch sensing device are disposed at two opposite sides of the substrate.

29. The touch panel according to claim 26, further comprising a carrier substrate disposed on the substrate, and the decoration layer is disposed at a side of the carrier substrate facing the substrate.

30. A touch panel, comprising:

a substrate;

a touch sensing device, disposed on the substrate, and the touch sensing device comprising a first electrode pattern;

a first optical matching layer, disposed on the substrate; and

a second optical matching layer, disposed on the substrate, wherein the touch sensing device being disposed between the first optical matching layer and the second optical matching layer.

31. The touch panel according to claim 30, wherein the touch sensing device further comprises a second electrode pattern.

32. The touch panel according to claim 30, wherein the substrate comprises a touching region and a periphery region disposed at at least one side of the touching region, the touch panel further comprises a decoration layer, and the decoration layer is disposed in the periphery region.

33. The touch panel according to claim 32, wherein the decoration layer is disposed on the substrate, and decoration layer and the touch sensing device are disposed at a same side of the substrate.

34. The touch panel according to claim 32, wherein the decoration layer is disposed on the substrate, and decoration layer and the touch sensing device are disposed at two opposite sides of the substrate.

35. The touch panel according to claim 32, further comprising a carrier substrate disposed on the substrate, and the decoration layer is disposed at a side of the carrier substrate facing the substrate.

36. A touch display panel, comprising:

a display panel, the display panel comprising;

a substrate;

a touch sensing device, disposed on the substrate, and the touch sensing device comprising a first electrode pattern; and

a first optical matching layer, disposed on the substrate.

37. The touch display panel according to claim 36, wherein the first electrode pattern comprises silver or silver alloy.

38. The touch display panel according to claim 36, further comprising:

a cover lens, disposed on a side of the substrate where the touch sensing device is disposed; and

a decoration layer, disposed at a side of the cover lens facing the touch sensing device and corresponding to a peripheral region of the substrate.