TOUCH PANEL AND TOUCH DISPLAY DEVICE

• US 20110096019A1
• Filed: 04/08/2010
• Published: 04/28/2011
• Est. Priority Date: 10/22/2009
• Status: Abandoned Application

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Liu, En-Hung, Tsai, Ming-Yao, Shih, Chih-Hung, Cheng, Ching-Sheng
• Application Number:
  US12/756,299
• Publication Number:
  US 20110096019A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/042 by opto-electronic means
• CPC Class Codes: G06F 3/044 by capacitive means

Abstract

A touch panel and a touch display device are provided. The touch panel includes a first substrate having an inner surface and an outer surface. A position sensing structure is disposed over the inner surface or the outer surface of the first substrate. A second substrate is disposed opposite to the first substrate, facing the inner surface of the first substrate. A plurality of press sensing structures is disposed between the first and the second substrates and a press signal connecting line is disposed to serially connect all of the press sensing structures. The touch display device includes the above mentioned touch panel.

Claims

1. A touch panel, comprising:

a first substrate, having an inner surface and an outer surface;

a position sensing structure disposed over the inner surface or the outer surface of the first substrate;

a second substrate disposed opposite to the first substrate and facing the inner surface of the first substrate;

a plurality of press sensing structures arranged in an array and disposed between the first and the second substrates; and

a press signal connecting line disposed to series connect all of the press sensing structures to output an instruction signal.

2. The touch panel of claim 1, wherein the position sensing structure is disposed on the outer surface of the first substrate.

3. The touch panel of claim 1, further comprising a color filter layer disposed over the inner surface of the first substrate.

4. The touch panel of claim 3, wherein the position sensing structure is disposed on the inner surface of the first substrate, and disposed between the first substrate and the color filter layer.

5. The touch panel of claim 1, further comprising a pair of an upper polarizer and a lower polarizer sandwiching the first substrate and the second substrate, wherein the upper polarizer is disposed adjacent to the first substrate and the lower polarizer is

6. The touch panel of claim 5, further comprising a third substrate, wherein the position sensing structure is disposed on the third substrate, and the position sensing structure and the third substrate are disposed on the upper polarizer.

7. The touch panel of claim 1, wherein the press signal connecting line has a shape comprising a comb shape, a reticulate shape or an irregular trend continuous line.

8. The touch panel of claim 1, wherein the press signal connecting line is parallel to a data line.

9. The touch panel of claim 1, wherein the press signal connecting line overlaps with a data line and is disposed over the data line.

10. The touch panel of claim 1, wherein the press sensing structure comprises:

a sensing spacer;

a sensing stage disposed under the sensing spacer;

a first transparent conductive layer disposed on the sensing spacer and facing the sensing stage; and

a second transparent conductive layer disposed on the sensing stage, wherein the first transparent conductive layer and the second transparent conductive layer are separated by a sensing gap when the touch panel is not pressed.

11. The touch panel of claim 10, further comprising a first spacer disposed opposite to a first stage, wherein the first spacer and the first stage are disposed in the layer is not disposed on the first spacer, and the first spacer and the first stage contact each other while the touch panel is not pressed.

12. The touch panel of claim 11, further comprising a second spacer disposed opposite to a second stage, wherein the second spacer and the second stage are disposed in the same level structure with the press sensing structure, the first transparent conductive layer is not disposed on the second spacer, and the second spacer and the second stage are separated by a first auxiliary gap when the touch panel is not pressed, and wherein the first auxiliary gap is smaller than the sensing gap.

13. The touch panel of claim 12, wherein the second spacer has a height which is equal to the first spacer and the second stage has a height smaller than the height of the first stage.

14. The touch panel of claim 11, further comprising a third spacer disposed opposite to a third stage, wherein the third spacer and the third stage are disposed in the same level structure with the press sensing structure, the second transparent conductive layer is not disposed on the third stage, and the third spacer and the third stage are separated by a second auxiliary gap when the touch panel is not pressed, and wherein the second auxiliary gap is greater than the sensing gap.

15. The touch panel of claim 14, wherein the third spacer has a height the same as a height of the sensing spacer and the third stage has a height smaller than the height of the sensing stage.

16. The touch panel of claim 1, further comprising a liquid crystal layer disposed between the first substrate and the second substrate.

17. The touch panel of claim 1, wherein the press sensing structure is connected to the press signal connecting line directly without connecting with a sensing thin film transistor.

18. The touch panel of claim 1, wherein the position sensing structure determines a touch position.

19. The touch panel of claim 1, wherein the press sensing structures determine whether an instruction is implemented.

20. The touch panel of claim 1, wherein the position sensing structure comprises a capacitance sensing component or a photo sensing component.

21. A touch display device, comprising:

a first substrate, having an inner surface and an outer surface;

a position sensing structure disposed over the inner surface or the outer surface of the first substrate;

a second substrate disposed opposite to the first substrate and facing the inner surface of the first substrate;

a plurality of press sensing structures arranged in an array and disposed between the first and the second substrates;

a press signal connecting line disposed to series connect all of the press sensing structures to output an instruction signal; and

a display element disposed between the first and the second substrates to

22. The touch display device of claim 21, wherein the display element comprises an electrophoretic display element, an organic light-emitting diode display element or a liquid crystal display element.

23. The touch display device of claim 21, further comprising an integrated circuit electrically connecting to the press signal connecting line and the display element, wherein the integrated circuit receives the instruction signal from the press