Touch panel

• US 9,372,509 B2
• Filed: 10/29/2014
• Issued: 06/21/2016
• Est. Priority Date: 02/27/2014
• Status: Active Grant

• Current Assignee: HannStar Display Corporation
• Original Assignee: Industrial Technology Research Institute
• Inventors: Chang, Chih-Chia, Chen, Sin-An, Lin, Wei-Yi
• Primary Examiner(s): NGUYEN, JENNIFER T
• Application Number:
  US14/526,551
• Publication Number:
  US 20150241924A1
• Time in Patent Office: 601 Days
• Field of Search: 345173-178
• US Class Current: 1/1
• CPC Class Codes: G06F 1/1652 the display being flexible, e.g. mimicking a sheet of paper, or rollable
• CPC Class Codes: G06F 2203/04102 Flexible digitiser, i.e. constructional details for allowing the whole digitising part of a device to be flexed or rolled like a sheet of paper
• 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 panel includes a substrate, first electrodes, second electrodes, third electrodes, and fourth electrodes. The substrate includes a first touch region, a second touch region, and a first touch folding region disposed between the first touch region and the second touch region. The first electrodes extending from the first touch region to the first touch folding region and the second electrodes are disposed in the first touch region on the substrate. The third electrodes extending from the second touch region to the first touch folding region and the fourth electrodes are disposed in the second touch region on the substrate. The first electrodes and the third electrodes are not intersected with one another. A ratio of any side length of the touch panel to a distance between the first touch region and the second touch region is between 9.5 and 95.

Claims

1. A touch panel, comprising:

a substrate comprising a first touch region, a second touch region, and a first touch folding region, wherein the first touch folding region is disposed between the first touch region and the second touch region;

a plurality of first electrodes and a plurality of second electrodes disposed in the first touch region on the substrate, wherein the first electrodes and the second electrodes are intersected with one another, and the first electrodes are extended from the first touch region to the first touch folding region; and

a plurality of third electrodes and a plurality of fourth electrodes disposed in the second touch region on the substrate, wherein the third electrodes and the fourth electrodes are intersected with one another, and the third electrodes are extended from the second touch region to the first touch folding region,

the first electrodes and the third electrodes are not intersected with one another, and a ratio of any side length of the touch panel to a distance between the first touch region and the second touch region is between 9.5 and 95,

wherein each of the first electrodes and each of the third electrodes are staggered with one another in the first touch folding region.

2. The touch panel of claim 1, wherein each of the first electrodes further contains at least one first sub-electrode in the first touch folding region, and the at least one first sub-electrode is extended from the first electrode toward the adjacent third electrodes,

each of the third electrodes further contains at least one third sub-electrode in the first touch folding region, and the at least one third sub-electrode is extended from the third electrode toward the adjacent first electrodes.

3. The touch panel of claim 2, wherein the first sub-electrodes and the third sub-electrodes are staggered with one another.

4. The touch panel of claim 1, further comprising a first compensation electrode disposed in the first touch folding region and between the first electrodes and the third electrodes.

5. The touch panel of claim 4, wherein the first compensation electrode further contains a plurality of first compensation sub-electrodes, a portion of the first compensation sub-electrodes is extended from the first compensation electrode toward a direction of the first touch region and is between the adjacent first electrodes, and another portion of the first compensation sub-electrodes is extended from the first compensation electrode toward a direction of the second touch region, and is between the adjacent third electrodes.

6. The touch panel of claim 5, wherein each of the first electrodes further contains at least one first sub-electrode in the first touch folding region, and each of the first compensation sub-electrodes is between the at least one first sub-electrode and each of the first electrodes,

each of the third electrodes further contains at least one third sub-electrode in the first touch folding region, and each of the first compensation sub-electrodes is between the at least one third sub-electrode and each of the third electrodes.

7. The touch panel of claim 6, wherein each of the first compensation sub-electrodes further contains a plurality of second compensation sub-electrodes, a portion of the second compensation sub-electrodes is extended from each of the first compensation sub-electrodes toward a direction of the first sub-electrode and each of the first electrodes, and is between the adjacent first sub-electrode and each of the first electrodes,

another portion of the second compensation sub-electrodes is extended from each of the first compensation sub-electrodes toward a direction of the third sub-electrode and each of the third electrodes, and is between the adjacent third sub-electrode and each of the third electrodes.

8. The touch panel of claim 7, wherein each of the first electrodes further contains a plurality of second sub-electrodes in the first touch folding region, a portion of the second sub-electrodes is extended from each of the first electrodes toward a direction of the adjacent first compensation sub-electrodes, and another portion of the second sub-electrodes is extended from each of the first sub-electrodes toward a direction of the first compensation sub-electrodes,

each of the third electrodes further contains a plurality of fourth sub-electrodes in the first touch folding region, a portion of the fourth sub-electrodes is extended from each of the second electrodes toward the direction of the adjacent first compensation sub-electrodes, and another portion of the fourth sub-electrodes is extended from each of the second sub-electrodes toward the direction of the first compensation sub-electrodes.

9. The touch panel of claim 8, wherein each of the second sub-electrodes and each of the second compensation sub-electrodes are staggered with one another, and each of the fourth sub-electrodes and each of the second compensation sub-electrodes are staggered with one another.

10. The touch panel of claim 4, further comprising a second compensation electrode disposed in the first touch folding region and between the first compensation electrode and the third electrodes.

11. The touch panel of claim 10, wherein the first compensation electrode further contains a plurality of first compensation sub-electrodes, and each of the first compensation sub-electrodes is extended from the first compensation electrode toward the first touch region and is between the adjacent first electrodes,

the second compensation electrode further contains a plurality of third compensation sub-electrodes, and each of the third compensation sub-electrodes is extended from the second compensation electrode toward the second touch region and is between the adjacent third electrodes.

12. The touch panel of claim 11, wherein each of the first electrodes further contains at least one first sub-electrode in the first touch folding region, and each of the first compensation sub-electrodes is between each of the first sub-electrodes and each of the first electrodes,

each of the third electrodes further contains at least one third sub-electrode in the first touch folding region, and each of the third compensation sub-electrodes is between each of the third sub-electrodes and each of the third electrodes.

13. The touch panel of claim 12, wherein each of the first compensation sub-electrodes further contains a plurality of second compensation sub-electrodes, each of the second compensation sub-electrodes is extended from each of the first compensation sub-electrodes toward a direction of each of the first sub-electrodes and each of the first electrodes, and is between each of the adjacent first sub-electrodes and each of the first electrodes,

the third compensation sub-electrode further contains a plurality of fourth compensation sub-electrodes, each of the fourth compensation sub-electrodes is extended from each of the third compensation sub-electrodes toward a direction of each of the third sub-electrodes and each of the third electrodes, and is between each of the adjacent third sub-electrodes and each of the third electrodes.

14. The touch panel of claim 13, wherein each of the first electrodes further contains a plurality of second sub-electrodes in the first touch folding region, a portion of the second sub-electrodes is extended from each of the first electrodes toward the adjacent first compensation sub-electrodes, and another portion of the second sub-electrodes is extended from each of the first sub-electrodes toward the adjacent first compensation sub-electrodes,

each of the third electrodes further contains a plurality of fourth sub-electrodes in the first touch folding region, a portion of the fourth sub-electrodes is extended from each of the third electrodes toward the adjacent third compensation sub-electrodes, and another portion of the fourth sub-electrodes is extended from each of the third sub-electrodes toward the adjacent third compensation sub-electrodes.

15. The touch panel of claim 14, wherein each of the second sub-electrodes and each of the second compensation sub-electrodes are staggered with one another, and each of the fourth sub-electrodes and each of the fourth compensation sub-electrodes are staggered with one another.

16. The touch panel of claim 10, wherein a distance between the first compensation electrode and the second compensation electrode is between 0.01 mm and 5 mm.

17. The touch panel of claim 1, wherein the first electrodes and the third electrodes are selected from a group consisting of a metal mesh layer, a nano-conductive material layer, a transparent conductive oxide layer, a polymer conductive layer, and a combination thereof.

18. The touch panel of claim 1, further comprising a plurality of first compensation electrodes and a plurality of second compensation electrodes disposed in the first touch folding region and between the first electrodes and the third electrodes, each of the first compensation electrodes is electrically independent of one other, and each of the second compensation electrodes is electrically independent of one other.

19. The touch panel of claim 18, wherein each of the first compensation electrodes further contains at least one first compensation sub-electrode, and the at least one first compensation sub-electrode is extended from each of the first compensation electrodes toward the direction of the first touch region and is between the adjacent first electrodes,

each of the second compensation electrodes further contains at least one third compensation sub-electrode, and the at least one third compensation sub-electrode is extended from each of the second compensation electrodes toward the direction of the second touch region and is between the adjacent third electrodes.

20. The touch panel of claim 19, wherein each of the first electrodes further contains at least one first sub-electrode in the first touch folding region, and each of the first compensation sub-electrodes is between the at least one first sub-electrode and each of the first electrodes,

each of the third electrodes further contains at least one third sub-electrode in the first touch folding region, and each of the third compensation sub-electrodes is between the at least one third sub-electrode and each of the third electrodes.

21. The touch panel of claim 20, wherein each of the first compensation sub-electrodes further contains a plurality of second compensation sub-electrodes, each of the second compensation sub-electrodes is extended from each of the first compensation sub-electrodes toward a direction of the first sub-electrode and each of the first electrodes, and is between the adjacent first sub-electrode and each of the first electrodes,

each of the third compensation sub-electrodes further contains a plurality of fourth compensation sub-electrodes, each of the fourth compensation sub-electrodes is extended from each of the third compensation sub-electrodes toward a direction of the third sub-electrode and each of the third electrodes, and is between adjacent the third sub-electrode and each of the third electrodes.

22. The touch panel of claim 1, further comprising a third touch region and a second touch folding region, wherein the second touch folding region is disposed between the second touch region and the third touch region;

and

a plurality of fifth electrodes and a plurality of sixth electrodes disposed in the third touch region on the substrate, wherein the fifth electrodes and the sixth electrodes are intersected with one another, and the fifth electrodes are extended from the third touch region to the second touch folding region,

the third electrodes are extended from the second touch region to the second touch folding region,

wherein the third electrodes and the fifth electrodes are not intersected with one another, and a ratio of any side length of the touch panel to a distance between the second touch region and the third touch region is between 9.5 and 95.

23. The touch panel of claim 22, further comprising a fourth touch region and a third touch folding region, wherein the third touch folding region is disposed between the third touch region and the fourth touch region;

and

a plurality of seventh electrodes and a plurality of eighth electrodes disposed in the fourth touch region on the substrate, wherein the seventh electrodes and the eighth electrodes are intersected with one another, and the seventh electrodes are extended from the fourth touch region to the third touch folding region,

the fifth electrodes are extended from the third touch region to the third touch folding region,

the fifth electrodes and the seventh electrodes are not intersected with one another, and a ratio of any side length of the touch panel to a distance between the third touch region and the fourth touch region is between 9.5 and 95.

24. The touch panel of claim 1, further comprising a third touch region and a second touch folding region, wherein the second touch folding region and the first touch folding region are intersected with one another, and the second touch folding region is disposed between the second touch region and the third touch region;

and

a plurality of fifth electrodes and a plurality of sixth electrodes disposed in the third touch region on the substrate, wherein the fifth electrodes and the sixth electrodes are intersected with one another, the fifth electrodes are extended from the third touch region to the first touch folding region, and the sixth electrodes are extended from the third touch region to the second touch folding region,

the fourth electrodes are extended from the second touch region to the second touch folding region,

wherein the fourth electrodes and the sixth electrodes are not intersected with one another, the first electrodes and the fifth electrodes are not intersected with one another, and a ratio of any side length of the touch panel to a distance between the second touch region and the third touch region is between 9.5 and 95.

25. The touch panel of claim 24, further comprising a fourth touch region and a third touch folding region, wherein the third touch folding region and the first touch folding region are intersected with one another, and the third touch folding region is disposed between the first touch region and the fourth touch region;

and

a plurality of seventh electrodes and a plurality of eighth electrodes disposed in the fourth touch region on the substrate, wherein the seventh electrodes and the eighth electrodes are intersected with one another, the seventh electrodes are extended from the fourth touch region to the first touch folding region, and the eighth electrodes are extended from the fourth touch region to the third touch folding region,

the second electrodes are extended from the first touch region to the third touch folding region,

the second electrodes and the eighth electrodes are not intersected with one another, the fifth electrodes and the seventh electrodes are not intersected with one another, and a ratio of any side length of the touch panel to a distance between the first touch region and the fourth touch region is between 9.5 and 95.

26. The touch panel of claim 1, wherein the first touch folding region further comprises at least one non-touch region.