TOUCH SENSING DISPLAY PANEL AND TOUCH SENSING SUBSTRATE

• US 20100220075A1
• Filed: 07/02/2009
• Published: 09/02/2010
• Est. Priority Date: 03/02/2009
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Liu, Po-Yuan, Kuo, Chun-Ku
• Granted Patent: US 8,269,743 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• 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 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality

Abstract

A touch sensing display panel includes an active device array substrate, an opposite substrate, a display medium layer, a plurality of inner and outer electrode series. The opposite substrate is disposed over the active device array substrate and the display medium layer is disposed between the active device array substrate and the opposite substrate. The inner electrode series are disposed on the opposite substrate and extend along a first direction, wherein each inner electrode series includes inner ring electrodes electrically connected to each other. The outer electrode series are disposed on the opposite substrate and extend along a second direction, wherein each outer electrode series includes outer ring electrodes electrically connected to each other. Each inner ring electrodes is respectively surrounded by one of the outer ring electrodes, and the first direction is substantially perpendicular to the second direction. The present invention also provides a touch sensing substrate.

Claims

1. A touch sensing display panel, comprising:

an active device array substrate;

an opposite substrate, disposed over the active device array substrate;

a display medium layer, disposed between the active device array substrate and the opposite substrate;

a plurality of inner electrode series, disposed on the opposite substrate and extending along a first direction, wherein each of the inner electrode series comprises a plurality of inner ring electrodes electrically connected to each other; and

a plurality of outer electrode series, disposed on the opposite substrate and extending along a second direction, wherein each of the outer electrode series comprises a plurality of outer ring electrodes electrically connected to each other, each of the inner ring electrodes is respectively surrounded by one of the outer ring electrodes, and the first direction is different from the second direction.

2. The touch sensing display panel as claimed in claim 1, wherein the active device array substrate comprises a transistor array substrate.

3. The touch sensing display panel as claimed in claim 1, wherein the opposite substrate comprises a color filter substrate.

4. The touch sensing display panel as claimed in claim 1, wherein the display medium layer comprises a liquid crystal layer, an organic light emitting layer or an electrophoretic layer.

5. The touch sensing display panel as claimed in claim 1, wherein the inner electrode series are electrically insulated from each other and the outer electrode series are electrically insulated from each other.

6. The touch sensing display panel as claimed in claim 1, wherein the inner electrode series are electrically insulated from the outer electrode series.

7. The touch sensing display panel as claimed in claim 1, wherein the inner electrode series and the outer electrode series are disposed on an outer surface of the opposite substrate.

8. The touch sensing display panel as claimed in claim 1, wherein the inner electrode series and the outer electrode series are disposed on an inner surface of the opposite substrate.

9. The touch sensing display panel as claimed in claim 1, wherein a material of the inner ring electrodes comprises transparent conductive material.

10. The touch sensing display panel as claimed in claim 1, wherein each of the inner electrode series further comprises a plurality of first bridge lines and each of the first bridge lines is connected between two adjacent inner ring electrodes.

11. The touch sensing display panel as claimed in claim 10, wherein a material of the first bridge lines comprises transparent conductive material or metal material.

12. The touch sensing display panel as claimed in claim 1, wherein a material of the outer ring electrodes comprises transparent conductive material.

13. The touch sensing display panel as claimed in claim 1, wherein each of the outer electrode series further comprises a plurality of second bridge lines and each of the second bridge lines is connected between two adjacent outer ring electrodes.

14. The touch sensing display panel as claimed in claim 13, wherein a material of the second bridge lines comprises transparent conductive material or metal material.

15. The touch sensing display panel as claimed in claim 1, further comprising a plurality of floating electrodes disposed on the opposite substrate and surrounding the outer electrode series and the inner electrode series.

16. The touch sensing display panel as claimed in claim 15, wherein a part of the floating electrodes respectively extends between an inner ring electrodes and an outer ring electrode.

17. The touch sensing display panel as claimed in claim 1, wherein each of the outer electrode series is a bar-shaped conductor, the bar-shaped conductor has a plurality of notches and a part of the inner ring electrodes is located in the notches.

18. The touch sensing display panel as claimed in claim 1, wherein the first direction is perpendicular to the second direction.

19. The touch sensing display panel as claimed in claim 1, further comprising a patterned dielectric layer located at the intersections of the inner electrode series and the outer electrode series.

20. The touch sensing display panel as claimed in claim 1, further comprising:

a driving circuit, electrically connected to the outer electrode series; and

a sensing circuit, electrically connected to the inner electrode series.

21. The touch sensing display panel as claimed in claim 1, further comprising:

a driving circuit, electrically connected to the inner electrode series; and

a sensing circuit, electrically connected to the outer electrode series.

22. The touch sensing display panel as claimed in claim 1, further comprising a protection layer covering the inner electrode series and the outer electrode series.

23. A touch sensing substrate, comprising:

a substrate;

a plurality of inner electrode series, disposed on the substrate and extending along a first direction, wherein each of the inner electrode series comprises a plurality of inner ring electrodes electrically connected to each other;

a plurality of outer electrode series, disposed on the substrate and extending along a second direction, wherein each of the outer electrode series comprises a plurality of outer ring electrodes electrically connected to each other, each of the inner ring electrodes is respectively surrounded by one of the outer ring electrodes and the first direction and the second direction are different from each other; and

a plurality of floating electrodes, disposed on the substrate and surrounding the outer electrode series and the inner electrode series.

24. The touch sensing substrate as claimed in claim 23, wherein the inner electrode series are electrically insulated from each other and the outer electrode series are electrically insulated from each other.

25. The touch sensing substrate as claimed in claim 23, wherein the inner electrode series are electrically insulated from the outer electrode series.

26. The touch sensing substrate as claimed in claim 23, wherein a material of the inner ring electrodes comprises transparent conductive material.

27. The touch sensing substrate as claimed in claim 23, wherein each of the inner electrode series further comprises a plurality of first bridge lines and each of the first bridge lines is connected between two adjacent inner ring electrodes.

28. The touch sensing substrate as claimed in claim 27, wherein a material of the first bridge lines comprises transparent conductive material or metal material.

29. The touch sensing substrate as claimed in claim 23, wherein a material of the outer ring electrodes comprises transparent conductive material.

30. The touch sensing substrate as claimed in claim 23, wherein each of the outer electrode series further comprises a plurality of second bridge lines and each of the second bridge lines is connected between two adjacent outer ring electrodes.

31. The touch sensing substrate as claimed in claim 30, wherein a material of the second bridge lines comprises transparent conductive material or metal material.

32. The touch sensing substrate as claimed in claim 23, wherein a part of the floating electrodes respectively extends between an inner ring electrodes and an outer ring electrode.

33. The touch sensing substrate as claimed in claim 23, wherein each of the outer electrode series is a bar-shaped conductor, the bar-shaped conductor has a plurality of notches and a part of the inner ring electrodes is located in the notches.

34. The touch sensing substrate as claimed in claim 23, wherein the first direction is perpendicular to the second direction.

35. The touch sensing substrate as claimed in claim 23, further comprising a patterned dielectric layer located at the intersections of the inner electrode series and the outer electrode series.

36. The touch sensing substrate as claimed in claim 23, further comprising:

a driving circuit, electrically connected to the outer electrode series; and

a sensing circuit, electrically connected to the inner electrode series.

37. The touch sensing substrate as claimed in claim 23, further comprising:

a driving circuit, electrically connected to the inner electrode series; and

a sensing circuit, electrically connected to the outer electrode series.

38. The touch sensing substrate as claimed in claim 23, further comprising a protection layer covering the inner electrode series and the outer electrode series.