CAPACITIVE IN-CELL TOUCH PANEL AND DISPLAY DEVICE

• US 20140320767A1
• Filed: 05/08/2013
• Published: 10/30/2014
• Est. Priority Date: 03/26/2013
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Company Limited (BOE Technology Group Co., Ltd.)
• Original Assignee: BOE Technology Group Co., Ltd.
• Inventors: Xu, Yubo, Hu, Ming, Lim, Byung Cheon, Hu, Zuquan
• Granted Patent: US 9,448,656 B2
• Time in Patent Office: Days
• US Class Current: 349/12
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04184 Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally
• 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

Embodiments of the invention disclose a capacitive in-cell touch panel and a display device. The touch panel includes an array substrate and a counter substrate, the array substrate includes: pixels defined by gate lines and data lines and a common electrode corresponding to each pixel. All the common electrodes are divided into a plurality of first common electrode groups arranged in a row direction and a plurality of second common electrode groups arranged in a column direction; a plurality of metal wires disposed in a same metal layer, wherein all the metal wires are divided into a plurality of first metal wire groups arranged in the row direction and a plurality of second metal wire groups arranged in the column direction; the first metal wire groups in a direction of a same row are electrically connected to each other, and are electrically connected to first common electrode groups corresponding to them in position, respectively, so as to form a driving line; the second metal wire groups in a direction of a same column are electrically connected to each other, and are electrically connected to second common electrode groups corresponding to them in position, respectively, so as to form a sensing line.

Claims

1. A capacitive in-cell touch panel, comprising an array substrate and a counter substrate, the array substrate including:

a plurality of gate lines and a plurality of data lines;

a plurality of pixels defined by the plurality of gate lines and the plurality of data lines, each of the pixels including a corresponding common electrode, wherein all the common electrodes are divided into a plurality of first common electrode groups arranged in a row direction and a plurality of second common electrode groups arranged in a column direction, and each first common electrode group and each second common electrode group are insulated from each other;

a plurality of metal wires disposed in a same metal layer, wherein all the metal wires are divided into a plurality of first metal wire groups arranged in the row direction and a plurality of second metal wire groups arranged in the column direction, and each first metal wire group and each second metal wire group are insulated from each other;

the first metal wire groups in a direction of a same row are electrically connected to each other, and are electrically connected to first common electrode groups corresponding to them in position, respectively, so as to form a driving line;

the second metal wire groups in a direction of a same column are electrically connected to each other, and are electrically connected to second common electrode groups corresponding to them in position, respectively, so as to form a sensing line.

2. The touch panel of claim 1, wherein the data lines include first data lines and second data lines that are arranged in parallel and alternately, wherein only the first data lines are adapted for load of a data signal;

the first metal wire groups belonging to a same driving line are connected together through at least one of the metal wires, and the second metal wire groups belonging to a same sensing line are connected together through the second data lines;

or

the first metal wire groups belonging to the same driving line are connected together through a second data lines, and the second metal wire groups belonging to a same sensing line are connected together through at least one of the metal wires.

3. The touch panel of claim 2, wherein where the second metal wire groups belonging to a same sensing line are connected together through the second data lines, at least one metal wire of each second metal wire group is connected to the second data lines through a via hole.

4. The touch panel of claim 2, wherein where the first metal wire groups belonging to a same driving line are connected together through the second data lines, at least one wire of each first metal wire group is connected to the second data lines through a via hole.

5. The touch panel of claim 2, wherein the first data lines and the second data lines are disposed on a same layer.

6. The touch panel of claim 1, wherein all common electrodes in each of the first common electrode groups belonging to a same driving line are formed into an integrate configuration by interconnection.

7. The touch panel of claim 1, wherein all common electrodes in each of the second common electrode groups belonging to a same sensing line are formed into an integrate configuration by interconnection.

8. The touch panel of claim 1, wherein part of the metal wires correspond to the gate lines in position, and other part of the metal wires correspond to the data lines in position.

9. The touch panel of claim 1, wherein each of the pixels further includes a pixel electrode, and the pixel electrode and the common electrode for the pixel are disposed on different layers.

10. The touch panel of claim 1, wherein the metal layer is disposed on a different layer from the gate lines and the data lines.

11. The touch panel of claim 1, wherein each row of the metal wires is a whole metal wire, or, each row of the metal wires includes at least two discrete wires.

12. The touch panel of claim 1, wherein each of the first metal wire groups and each of the second metal wire groups includes a number of metal wires that are disposed to cross over and electrically connected to one another.

13. A display device, comprising the touch panel of claim 1.

14. The touch panel of claim 2, wherein all common electrodes in each of the first common electrode groups belonging to a same driving line are formed into an integrate configuration by interconnection.

15. The touch panel of claim 2, wherein all common electrodes in each of the second common electrode groups belonging to a same sensing line are formed into an integrate configuration by interconnection.

16. The touch panel of claim 2, wherein part of the metal wires correspond to the gate lines in position, and other part of the metal wires correspond to the data lines in position.

17. The touch panel of claim 2, wherein each of the pixels further includes a pixel electrode, and the pixel electrode and the common electrode for the pixel are disposed on different layers.

18. The touch panel of claim 2, wherein the metal layer is disposed on a different layer from the gate lines and the data lines.

19. The touch panel of claim 2, wherein each row of the metal wires is a whole metal wire, or, each row of the metal wires includes at least two discrete wires.

20. The touch panel of claim 2, wherein each of the first metal wire groups and each of the second metal wire groups includes a number of metal wires that are disposed to cross over and electrically connected to one another.