Touch-control display panel, driving method thereof, and touch-control display device

• US 10,191,583 B2
• Filed: 12/20/2016
• Issued: 01/29/2019
• Est. Priority Date: 07/29/2016
• Status: Active Grant

• Current Assignee: Tianma Microelectronics Company Limited, Xiamen Tianma Micro-Electronics Co., Ltd.
• Original Assignee: Tianma Microelectronics Company Limited, Xiamen Tianma Micro-Electronics Co., Ltd.
• Inventors: Lai, Qingjun, Cao, Zhaokeng, Shen, Poping, Zhou, Xiufeng, Zhu, Yihua, Zhang, Zhaodong
• Primary Examiner(s): Rayan, Mihir K
• Application Number:
  US15/385,805
• Publication Number:
  US 20170102821A1
• Time in Patent Office: 770 Days
• 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 3/04166 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A touch-control display panel, a driving method thereof, and a touch-control display device are provided. The display panel includes a first substrate and a plurality of touch-control driving electrodes extending along a second direction. The first substrate includes a first touch-control display region and a second touch-control display region arranged along a first direction. The plurality of touch-control driving electrodes include first touch-control driving electrodes distributed in the first touch-control display region and second touch-control driving electrodes distributed in the second touch-control display region. The number of the first touch-control driving electrodes is equal to the number of the second touch-control driving electrodes. One first touch-control driving electrode and one second touch-control driving electrode are scanned simultaneously, a distance from the one first touch-control driving electrode to the second touch-control display region is equal to a distance from the one second touch-control driving electrode to the first touch-control display region.

Claims

1. A driving method of a touch-control display panel including a first substrate including a first touch-control display region and a second touch-control display region arranged along a first direction, wherein the first touch-control display region and the second touch-control display region are arranged adjacent to each other;

a plurality of touch-control driving electrodes disposed on the first substrate and extending along a second direction;

a second substrate arranged opposite to the first substrate; and

a plurality of touch-control detecting electrodes disposed on the second substrate, extending along the first direction, and overlapped with the plurality of touch-control driving electrodes, wherein the plurality of touch-control driving electrodes include a plurality of first touch-control driving electrodes distributed in the first touch-control display region and a plurality of second touch-control driving electrodes distributed in the second touch-control display region, a number of the first touch-control driving electrodes distributed in the first touch-control display region is equal to a number of the second touch-control driving electrodes distributed in the second touch-control display region, the plurality of first touch-control driving electrodes and the plurality of second touch-control driving electrodes include all the touch-control driving electrodes overlapped with the plurality of touch-control detecting electrodes, each first touch-control driving electrode of the plurality of first touch-control driving electrodes distributed in the first touch-control display region has a corresponding second touch-control driving electrode of the plurality of second touch-control driving electrodes distributed in the second touch-control display region, a distance from the each first touch-control driving electrode to the second touch-control display region is equal to a distance from the corresponding second touch-control driving electrode to the first touch-control display region, the each first touch-control driving electrode and the corresponding second touch-control driving electrode are scanned simultaneously, the driving method comprising;

in a touch-control sensing period, scanning the each first touch-control driving electrode and the corresponding second touch-control driving electrode simultaneously,

wherein each display period of the touch-control display panel includes at least one touch-control sensing period, and

a scanning direction of the first touch-control driving electrodes in the first touch-control display region is opposite to a scanning direction of the second touch-control driving electrodes in the second touch-control display region.

2. The driving method according to claim 1, wherein:

during the touch-control sensing period, in the first touch-control display region, scanning starts from the first touch-control driving electrode that is nearest to the second touch-control display region; and

in the second touch-control display region, scanning starts from the second touch-control driving electrode that is nearest to the first touch-control display region.

3. The driving method according to claim 1, wherein:

during the touch-control sensing period, in the first touch-control display region, scanning starts from the first touch-control driving electrode that is farthest to the second touch-control display region; and

in the second touch-control display region, scanning starts from the second touch-control driving electrode that is farthest to the first touch-control display region.

4. The driving method according to claim 1, wherein:

signal amounts received by each touch-control driving electrode are the same.

5. The driving method according to claim 1, wherein:

during the touch-control sensing period, the touch-control driving electrodes that are not scanned are connected to ground or output display signals.

6. The driving method according to claim 1, wherein:

a distance between adjacent first touch-control driving electrodes in the first touch-control display region is equal to a distance between adjacent second touch-control driving electrodes in the second touch-control display region.

7. The driving method according to claim 1, wherein:

the touch-control driving electrodes are disposed on one side of the first substrate facing towards the second substrate; and

the touch-control detecting electrodes are disposed on one side of the second substrate facing away the first substrate.

8. The driving method according to claim 7, wherein:

the plurality of touch-control detecting electrodes are divided into a plurality of rows along the second direction and are divided into two columns along the first direction,

wherein projections of one column of the touch-control detecting electrodes are disposed in the first touch-control display region, and projections of the other column of the touch-control detecting electrodes are disposed in the second touch-control display region.

9. The driving method according to claim 7, wherein:

the first direction is perpendicular to the second direction.

10. The driving method according to claim 1, wherein:

a plurality of scanning lines are disposed on the first substrate, and each scanning line extends along the first direction.

11. The driving method according to claim 1, wherein:

a plurality of data lines are disposed on the first substrate, and each data line extends along the second direction.

12. The driving method according to claim 11, wherein:

the touch-control driving electrodes are located above the data lines, and each touch-control driving electrode covers a plurality of data lines.

13. The driving method according to claim 1, wherein:

a plurality of touch-control lead wires is connected to the touch-control driving electrodes.