Touch-sensing substrate, color filter substrate and touch-sensing liquid crystal display

• US 8,421,759 B2
• Filed: 03/24/2009
• Issued: 04/16/2013
• Est. Priority Date: 11/05/2008
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chien, Yu-Feng, Yang, Tun-Chun, Lee, Seok-Lyul, Huang, Wei-Ming, Wu, Yuan-Chun
• Primary Examiner(s): OLSON, JASON C
• Application Number:
  US12/409,521
• Publication Number:
  US 20100110023A1
• Time in Patent Office: 1,484 Days
• Field of Search: None
• US Class Current: 345/173
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• CPC Class Codes: G02F 1/133514 Colour filters
• 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

A color filter substrate including a substrate, a plurality of patterned color filter layers, and a plurality of sensing serials is provided. The substrate has a first surface and a second surface opposite to the first surface. The substrate includes a plurality of display regions arranged in array and a separated region located between the display regions. The patterned color filter layers are arranged in array on the first surface and corresponding to the display regions. The sensing serials are arranged on the second surface and insulated from each other. Each sensing serial includes a plurality of sensing pads; a plurality of bridging lines, each connected with two adjacent sensing pads; a plurality of patterned conductive layers stacked and electrically connected with the sensing pads. The position of the patterned conductive layers is corresponding to the separated region. A touch-sensing liquid crystal display and a touch-sensing substrate are also provided.

Claims

1. A color filter substrate for a touch-sensing display, comprising:

a substrate having a first surface and a second surface opposite to the first surface and a plurality of display regions arranged in array, wherein a separated region is located between the display regions;

a plurality of patterned color filter layers arranged in array on the first surface and corresponding to the display regions;

a plurality of sensing serials arranged on the second surface, wherein the sensing serials are insulated from each other and comprising;

a plurality of sensing pads;

a plurality of bridging lines, each bridging line connecting two adjacent sensing pads; and

a plurality of patterned conductive layers disposed corresponding to the separated region between the display regions, wherein each of the patterned conductive layers is substantially contacted and electrically connected with one of the sensing pads and is not directly contacted with another one of the sensing pads.

2. The color filter substrate according to claim 1, wherein the sensing serials comprise:

a plurality of first sensing serials extending along a first direction; and

a plurality of second sensing serials extending along a second direction, wherein the first direction and the second direction are substantially perpendicular.

3. The color filter substrate according to claim 1, wherein a material of the sensing pads comprises transparent conductive material.

4. The color filter substrate according to claim 1, wherein a material of the bridging lines and a material of the patterned conductive layers are the same.

5. The color filter substrate according to claim 1, wherein a sheet resistance of the bridging lines is lower than a sheet resistance of the sensing pads.

6. The color filter substrate according to claim 1, wherein a sheet resistance of the patterned conductive layers is lower than a sheet resistance of the sensing pads.

7. The color filter substrate according to claim 1, wherein a material of the bridging lines and the patterned conductive layers comprises metal.

8. The color filter substrate according to claim 1, wherein a material of the bridging lines and the patterned conductive layers comprises a multi-layer metal structure composed of titanium, aluminum and titanium.

9. The color filter substrate according to claim 1, wherein the patterned conductive layers are disposed between the substrate and the sensing pads.

10. The color filter substrate according to claim 1, wherein the sensing pads are disposed between the substrate and the patterned conductive layers.

11. The color filter substrate according to claim 1, further comprising a black matrix layer disposed on the first surface and located in the separated region.

12. The color filter substrate according to claim 1, wherein each patterned conductive layer is a strip patterned conductive layer.

13. The color filter substrate according to claim 1, wherein each patterned conductive layer is a mesh patterned conductive layer.

14. The color filter substrate according to claim 1, wherein an area of each sensing pad is greater than an area of each patterned color filter layer.

15. A touch-sensing liquid crystal display, comprising:

a color filter substrate, comprising;

a substrate having a first surface and a second surface opposite to the first surface and a plurality of display regions arranged in array, wherein a separated region is located between the display regions;

a plurality of patterned color filter layers arranged in array on the first surface and corresponding to the display regions;

a plurality of sensing serials arranged on the second surface, wherein the sensing serials are insulated from each other and comprising;

a plurality of sensing pads;

a plurality of bridging lines, each bridging line connecting two adjacent sensing pads; and

a plurality of patterned conductive layers disposed corresponding to the separated region between the display regions, wherein each of the patterned conductive layers is substantially contacted and electrically connected with one of the sensing pads and is not directly contacted with another one of the sensing pads;

a transistor array substrate disposed opposite to the first surface of the color filter substrate; and

a liquid crystal layer disposed between the color filter substrate and the transistor array substrate.

16. A touch-sensing substrate for a touch-sensing display, comprising:

a substrate having a plurality of display regions arranged in array, wherein a separated region is located between the display regions;

a plurality of sensing serials, arranged on the substrate, wherein the sensing serials are insulated from each other and comprising;

a plurality of sensing pads;

a plurality of bridging lines, each bridging line connecting two adjacent sensing pads; and

a plurality of patterned conductive layers disposed corresponding to the separated region between the display regions, wherein each of the patterned conductive layers is substantially contacted and electrically connected with one of the sensing pads and is not directly contacted with another one of the sensing pads.

17. The touch-sensing substrate according to claim 16, the sensing serials comprising:

a plurality of first sensing serials extending along a first direction; and

a plurality of second sensing serials extending along a second direction, wherein the first direction and the second direction are substantially perpendicular.

18. The touch-sensing substrate according to claim 16, wherein a material of the sensing pads comprises transparent conductive material.

19. The touch-sensing substrate according to claim 16, wherein a sheet resistance of the patterned conductive layers is lower than a sheet resistance of the sensing pads.

20. The touch-sensing substrate according to claim 16, wherein a material of the patterned conductive layers comprises metal.

27. The touch-sensing substrate according to claim 16, wherein the patterned conductive layer is partially contacted with the sensing pad via a plurality of contact portions.

28. The touch-sensing substrate according to claim 16, wherein the patterned conductive layer is fully contacted with the sensing pad.

21. A touch-sensing display, comprising:

a touch-sensing substrate, comprising;

a substrate having a plurality of display regions arranged in array, wherein a separated region is located between the display regions;

a plurality of sensing serials, arranged on the substrate, wherein the sensing serials are insulated from each other and comprising;

a plurality of sensing pads;

a plurality of bridging lines, each bridging line connecting two adjacent sensing pads; and

a plurality of patterned conductive layers disposed conesponding to the separated region between the display regions, wherein each of the patterned conductive layers is substantially contacted and electrically connected with one of the sensing pads and is not directly contacted with another one of the sensing pads;

a transistor array substrate disposed opposite to the touch-sensing substrate; and

a display medium disposed between the touch-sensing substrate and the transistor array substrate.

22. The touch-sensing display according to claim 21, the sensing serials comprising:

a plurality of first sensing serials extending along a first direction; and

a plurality of second sensing serials extending along a second direction, wherein the first direction and the second direction are substantially perpendicular.

23. The touch-sensing display according to claim 21, wherein a material of the sensing pads comprises transparent conductive material.

24. The touch-sensing display according to claim 21, wherein a sheet resistance of the patterned conductive layers is lower than a sheet resistance of the sensing pads.

25. The touch-sensing display according to claim 21, wherein a material of the patterned conductive layers comprises metal.

26. The touch-sensing display according to claim 21, wherein the display medium comprises a liquid crystal layer.