TOUCH CONTROL DISPLAY PANEL, METHOD OF MANUFACTURING THE SAME, DRIVING METHOD, AND DISPLAY DEVICE

• US 20170177143A1
• Filed: 01/13/2016
• Published: 06/22/2017
• Est. Priority Date: 08/11/2015
• Status: Active Grant

• Current Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Original Assignee: Beijing BOE Optoelectronics Technology Co Ltd. (BOE Technology Group Co., Ltd.), BOE Technology Group Co., Ltd.
• Inventors: DING, Xiaoliang, LIU, Wei, LIU, Yingming, LIU, Hongjuan, WANG, Lei, LI, Changfeng, XU, Rui, DONG, Xue, WANG, Haisheng, CHEN, Xiaochuan, ZHAO, Weijie, YANG, Shengji
• Granted Patent: US 10,261,624 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• 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 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/04166 Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

A touch control display panel and a manufacturing method thereof, a driving method, and a display device are disclosed. The touch control display panel includes a plurality of pixel units configured on the array substrate in an array; the array substrate further includes a plurality of self capacitance touch control electrodes, which are arranged in an array, and each of which includes a plurality of electrode blocks, which have a one-to-one correspondence relationship with the plurality of pixel units; the array substrate further includes a plurality of touch control lead wires, which have a one-to-one correspondence relationship with the plurality of self capacitance touch control electrodes, the touch control lead wires are provided in gaps between adjacent columns of pixel units, which are corresponding to the plurality of self capacitance electrodes for touch control, and the plurality of self capacitance electrodes for touch control are connected with a touch control chip through the corresponding touch control lead wires.

Claims

1. A touch control display panel, comprising:

an array substrate and a plurality of pixel units arranged in an array on the array substrate, wherein,

the array substrate further comprises a plurality of self capacitance touch control electrodes, the plurality of self capacitance touch control electrodes are arranged in an array, each of the self capacitance touch control electrodes comprises a plurality of electrode blocks, which are corresponding to the plurality of pixel units;

the array substrate further comprises a plurality of touch control lead wires, which have a one-to-one correspondence relationship with the plurality of self capacitance touch control electrodes, the touch control lead wires are provided in gaps between adjacent columns of pixel units, which are corresponding to the plurality of self capacitance touch control electrodes, and the plurality of self capacitance touch control electrodes are connected with a touch control chip through the corresponding touch control lead wires;

the plurality of self capacitance touch control electrodes are configured to function as common electrodes in a display period, while function as touch control electrodes in a touch control period;

the touch control lead wires are configured for transmitting a common electrode signal to the common electrodes in a display period, while transmitting a touch control scanning signal to the self capacitance touch control electrodes in a touch control period, the touch control lead wires are also configured for transmitting a touch control signal to the touch control chip, and the touch control signal is generated by the self capacitance touch control electrodes at a position where the touch control operation occurs.

2. The touch control display panel according to claim 1, wherein, each of the self capacitance touch control electrodes comprises a plurality of electrode blocks arranged in an array, each row comprises at least two electrode blocks, and each column comprises at least two electrode blocks.

3. The touch control display panel according to claim 1,

wherein, the electrode blocks have a same size.

4. The touch control display panel according to claim 1, wherein, for each of the self capacitance touch control electrodes, a connection line is provided in a gap between adjacent rows of pixel units;

for each of the self capacitance touch control electrodes, the plurality of the electrode blocks in each row are connected through the connection line;

the connection line is provided on a same layer as a gate line of the array substrate and parallel with the gate line.

5. The touch control display panel according to claim 1, wherein, for each of the self capacitance touch control electrodes, the touch control lead wire is electrically connected to the corresponding connection line through a via hole.

6. The touch control display panel according to claim 1, wherein, a data line of the array substrate is provided above the touch control lead wires, and the data line and the touch control lead wires are insulated with each other;

and

an orthographic projection of the data lines on the array substrate and an orthographic projection of the touch control lead wires on the array substrate overlap with each other.

7. The touch control display panel according to claim 1, wherein, the plurality of electrode blocks have a one-to-one correspondence relationship with the plurality of pixel units.

14. A display device, comprising any of the touch control display panels according to claim 1.

15. The touch control display panel according to claim 2, wherein, for each of the self capacitance touch control electrodes, a connection line is provided in a gap between adjacent rows of pixel units;

for each of the self capacitance touch control electrodes, the plurality of the electrode blocks in each row are connected through the connection line;

the connection line is provided on a same layer as a gate line of the array substrate and parallel with the gate line.

16. The touch control display panel according to claim 15, wherein, for each of the self capacitance touch control electrodes, the touch control lead wire is electrically connected to the corresponding connection line through a via hole.

17. The touch control display panel according to claim 2, wherein, a data line of the array substrate is provided above the touch control lead wires, and the data line and the touch control lead wires are insulated with each other;

and

an orthographic projection of the data lines on the array substrate and an orthographic projection of the touch control lead wires on the array substrate overlap with each other.

18. The touch control display panel according to claim 2, wherein, the plurality of electrode blocks have a one-to-one correspondence relationship with the plurality of pixel units.

19. The touch control display panel according to claim 4, wherein, the plurality of electrode blocks have a one-to-one correspondence relationship with the plurality of pixel units.

20. The touch control display panel according to claim 6, wherein, the plurality of electrode blocks have a one-to-one correspondence relationship with the plurality of pixel units.

8. A method of manufacturing the touch control display panel, comprising:

forming a pattern of self capacitance touch control electrodes, which are provided in an array, on a base substrate, each of the self capacitance touch control electrodes comprises a plurality of electrode blocks, the plurality of electrode blocks have a one-to-one correspondence relationship with a plurality of pixel units, wherein the plurality of self capacitance touch control electrodes are configured to function as common electrodes in a display period while function as touch control electrodes in a touch control period;

forming a pattern of touch control lead wires on the base substrate with the pattern of the self capacitance touch control electrodes, wherein the touch control lead wires have a one-to-one correspondence relationship with the self capacitance touch control electrodes, and the pattern of the touch control lead wires is configured in gaps between adjacent columns of pixel units;

the touch control lead wires are configured for transmitting a common electrode signal to the common electrodes in a display period while transmitting a touch control scanning signal to the self capacitance touch control electrodes in a touch control period, the touch control lead wires are also configured for transmitting a touch control signal to a touch control chip, and the touch control signal is generated by the self capacitance touch control electrodes at a position where the touch control operation occurs.

9. The method according to claim 8, after the pattern of the self capacitance touch control electrodes is formed, and before the pattern of the touch control lead wires is formed, further comprising:

forming a pattern of gate electrodes and a pattern of connection lines on the base substrate with the pattern of the self capacitance touch control electrodes by a single patterning process.

10. The method according to claim 9, after the pattern of the connection line is formed, and before the pattern of the touch control lead wires is formed, further comprising:

forming a pattern of a first insulation layer with via holes therein on the base substrate with the pattern of the connection lines, wherein the pattern of the touch control lead wires is electrically connected to the corresponding pattern of the connection lines through the via holes.

11. The method according to claim 8, after the pattern of the touch control lead wires is formed, further comprising:

sequentially forming a pattern of a second insulation layer and a pattern of data lines on the base substrate with the pattern of the touch control lead wires;

wherein, an orthographic projection of the data lines on the array substrate and an orthographic projection of the touch control lead wires on the array substrate overlap with each other.

12. The method according to claim 11, after the pattern of the data line is formed, further comprising:

sequentially forming a pattern of a passivation layer and a pattern of pixel electrodes on the base substrate with the pattern of the data lines.

13. A driving method for a touch control display panel, comprising:

in a display period, applying a common electrode signal to a touch control lead wire of the touch control display panel, meanwhile, sequentially applying a gate electrode scanning signal to a gate line of the touch control display panel and applying a data signal to a data line;

in a touch control period, applying a touch control scanning signal to the touch control lead wire of the touch control display panel, meanwhile, applying a sync signal, which is modulated with the touch control scanning signal, to the gate line and the data line of the touch control display panel, wherein, in addition, the touch control lead wire also transmits a touch control signal, which is generated at a location where a touch control operation occurs, to a touch control chip, and then the touch control chip determines the location of a touch control point according to the touch control signal.