TOUCH SENSING DISPLAY AND TOUCH PANEL THEREOF

• US 20100302206A1
• Filed: 06/01/2010
• Published: 12/02/2010
• Est. Priority Date: 06/01/2009
• Status: Abandoned Application

• Current Assignee: Wintek Corporation
• Original Assignee: Wintek Corporation
• Inventors: Kang, Hen-Ta, YU, Ming-Chang, Han, Hsi-Rong
• Application Number:
  US12/791,324
• Publication Number:
  US 20100302206A1
• Time in Patent Office: Days
• US Class Current: 345/174
• 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 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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 3/0443 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
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

A touch panel includes a transparent substrate and a touch sensor. The transparent substrate has a cavity formed on one surface of the transparent substrate, and the touch sensor is provided inside the cavity of the transparent substrate.

Claims

1. A touch panel, comprising:

a transparent substrate having a cavity formed on one surface of the transparent substrate; and

a touch sensor provided inside the cavity of the transparent substrate.

2. The touch panel according to claim 1, wherein the transparent substrate is a flexible or a non-flexible substrate.

3. The touch panel according to claim 1, wherein the transparent substrate is a glass substrate or a plastic substrate.

4. The touch panel according to claim 1, wherein the touch sensor is a capacitive touch sensor, a resistive touch sensor, an inductive touch sensor, and an optical touch sensor.

5. The touch panel according to claim 1, further comprising a first insulation layer substantially filled in the cavity and covering the touch sensor.

6. The touch panel according to claim 5, further comprising a color filter layer provided on the first insulation layer.

7. The touch panel according to claim 6, further comprising a transparent shielding layer provided between the color filter layer and the first insulation layer and the transparent shielding layer is made of an electrically conductive material.

8. The touch panel according to claim 5, wherein the touch sensor is a capacitive touch sensor and the capacitive touch sensor comprises:

a plurality of first electrodes arranged along a first direction; and

a plurality of second electrodes arranged along a second direction intersected by the first direction.

9. The touch panel according to claim 8, wherein the capacitive touch sensor further comprises a second insulation layer covering the first electrodes and provided between the first electrodes and the second electrodes.

10. The touch panel according to claim 8, wherein the capacitive touch sensor further comprises a second insulation layer covering part of the first electrodes and provided on the same layer as the first electrodes and the second electrodes.

11. The touch panel according to claim 10, wherein each of the first electrodes comprises a plurality of first sensing pads and a plurality of first electrically conductive lines connected to the first sensing pads, each of the second electrodes comprises a plurality of second sensing pads and a plurality of second electrically conductive lines connected to the second sensing pads, the second insulation layer covers the first electrically conductive lines and fills up the gaps between the first electrodes and the second electrodes, and the first insulation layer covers the first electrodes and the second electrodes.

12. The touch panel according to claim 8, wherein the capacitive touch sensor further comprises:

a non-sensing area;

a plurality of first signal lines connected to the corresponding first electrodes, wherein the first signal lines extend from the inside of the cavity to the non-sensing area;

a plurality of second signal lines connected to the corresponding second electrodes, wherein the second signal lines extend from the inside of the cavity to the non-sensing area; and

a third insulation layer provided on the first insulation layer and covering the first signal lines and the second signal lines.

13. The touch panel according to claim 12, wherein the first electrodes, the second electrodes, the first signal lines, and the second signal lines are made of metal, indium tin oxide (ITO), or indium zinc oxide (IZO).

14. A touch sensing display, comprising:

a touch panel comprising;

a transparent substrate having a cavity formed on one surface of the transparent substrate; and

a touch sensor provided inside the cavity of the transparent substrate; and

a display unit provided on a first surface of the touch sensor, wherein the first surface is opposite a second surface of the touch sensor and the transparent substrate covers the second surface of the touch sensor.

15. The touch sensing display according to claim 14, wherein the display unit comprises a top transparent substrate, a bottom transparent substrate opposite the top transparent substrate, and a display layer between the top transparent substrate and the bottom transparent substrate.

16. The touch sensing display according to claim 15, wherein the display layer is a liquid crystal layer, an electro-phoretic display layer, an electro-wetting display layer, or an organic light emitting diode layer.

17. The touch sensing display according to claim 15, wherein the bottom transparent substrate is an active array transparent substrate, a glass substrate, or a color filter substrate.

18. The touch sensing display according to claim 14, wherein the display unit comprises a bottom transparent substrate and a display layer provided between the bottom transparent substrate and the transparent substrate.

19. The touch sensing display according to claim 18, wherein the display layer is a liquid crystal layer, an electro-phoretic display layer, an electro-wetting display layer, or an organic light emitting diode layer.

20. The touch sensing display according to claim 18, wherein the bottom transparent substrate is an active array transparent substrate, a glass substrate, or a color filter substrate.

21. The touch sensing display according to claim 14, wherein the touch panel further comprises an insulation layer substantially filled in the cavity and covering the touch sensor, and the display unit is provided on the insulation layer.

22. The touch sensing display according to claim 21, further comprising a transparent shielding layer provided between the touch panel and the insulation layer, wherein the transparent shielding layer is electrically conductive.