TOUCH SENSING DISPLAY PANEL

• US 20110057900A1
• Filed: 02/11/2010
• Published: 03/10/2011
• Est. Priority Date: 09/09/2009
• Status: Active Grant

• Current Assignee: AU Optronics Corporation
• Original Assignee: AU Optronics Corporation
• Inventors: Chien, Yu-Feng, Huang, Chau-Shiang, Yang, Tun-Chun, Lee, Seok-Lyul
• Granted Patent: US 8,659,558 B2
• Time in Patent Office: Days
• US Class Current: 345/174
• 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 touch-sensing display panel including a display panel and a touch-sensing unit is provided. The touch-sensing unit includes a plurality of first sensing series, a plurality of second sensing series and a plurality of sensing signal transmission lines. Each of the first sensing series includes a plurality of first sub-sensing series and a plurality of first conductive branches connected with the first sub-sensing series. Each of the second sensing series includes a plurality of second sub-sensing series and a plurality of second conductive branches connected with the second sub-sensing series. The first sensing series and the second sensing series are intersected. Further, each one of the first sensing series and each one of the second sensing series is electrically connected to one of the sensing signal transmission lines, respectively.

Claims

1. A touch sensing display panel comprising:

a display panel;

a touch sensing unit, disposed on the display panel, wherein the touch sensing unit comprises;

a plurality of first sensing series, wherein each of the first sensing series comprises a plurality of first sub-sensing series and a plurality of first conductive branches connecting the plurality of the first sub-sensing series;

a plurality of second sensing series, wherein each of the plurality of the second sensing series comprises a plurality of second sub-sensing series and a plurality of second conductive branches connecting the plurality of the second sub-sensing series; and

a plurality of sensing signal transmission lines, wherein each of the plurality of the sensing signal transmission lines respectively connects with one of the plurality of the first sensing series or one of the plurality of the second sensing series.

2. The touch sensing display panel of claim 1, wherein the display panel comprises:

a first substrate;

a second substrate, disposed above the first substrate; and

a display medium, disposed between the first substrate and the second substrate.

3. The touch sensing display panel of claim 2, wherein display medium comprises a liquid crystal layer, an electrophoretic display medium layer or an organic electroluminescent display medium layer.

4. The touch sensing display panel of claim 2, wherein the touch sensing unit is disposed on an exterior surface of the display panel.

5. The touch sensing display panel of claim 4 further comprising an auxiliary substrate, disposed between the touch sensing unit and the display panel.

6. The touch sensing display panel of claim 1, wherein the touch sensing unit is constructed inside the display panel.

7. The touch sensing display panel of claim 1, wherein each of the plurality of the first sub-sensing series comprises:

a plurality of first sensing pads; and

a plurality of first conductive bridges, wherein each of plurality of the first conductive bridges respectively connects with two neighboring first sensing pads of the plurality of the first sensing pads.

8. The touch sensing display panel of claim 7, wherein the plurality of the first conductive branches connects the plurality of the first sensing pads configured on different first sub-sensing series of the plurality of the first sub-sensing series.

9. The touch sensing display panel of claim 7, wherein each of the plurality of the second sub-sensing series comprises:

a plurality of second sensing pads; and

a plurality of second conductive bridges, wherein each of the plurality of the second conductive bridges respectively connects with two neighboring second sensing pads of the plurality of the second sensing pads.

10. The touch sensing display panel of claim 9, wherein the plurality of the second conductive branches connects the plurality of the second sensing pads configured on different second sub-sensing series of the plurality of the second sub-sensing series.

11. The touch sensing display panel of claim 9, wherein the first sensing pads, the first conductive bridges and the first conductive branches in each of the plurality of the first sensing series are arranged to form a first meshed structure, and the first meshed structure comprises a plurality of first meshes, and a position of each of the plurality of the first meshes corresponds with a position of one of the plurality of the second sensing pads.

12. The touch sensing display panel of claim 9, wherein the second sensing pads, the second conductive bridges and the second conductive lines in each of the plurality of the second sensing series are arranged to form a second meshed structure, and the second meshed structure comprises a plurality of second meshes, and a position of each of the plurality of the second meshes corresponds with a position of one of the plurality of the first sensing pads.

13. The touch sensing display panel of claim 1 further comprising a sensing signal read-out circuit, wherein the sensing signal read-out circuit is electrically connected with the plurality of the first sensing series and the plurality of the second sensing series through the plurality of the sensing signal transmission lines.

14. The touch sensing display panel of claim 7, wherein the plurality of the first sensing pads comprise transparent conductive sensing pads.

15. The touch sensing display panel of claim 14, wherein the transparent conductive sensing pads are constituted a material comprising indium tin oxide, indium zinc oxide, or aluminum zinc oxide.

16. The touch sensing display panel of claim 7, wherein the plurality of the first sensing pads comprise metal mesh-shaped sensing pads.

17. The touch sensing display panel of claim 16, wherein the metal mesh-shaped sensing pads are constituted with a material comprising aluminum, copper, molybdenum, tungsten or gold.

18. The touch sensing display panel of claim 16, wherein a line width of the metal mesh-shaped sensing pads ranges from 01. to 10 micron.