Driving method and driving circuit of touch control module, touch control module, touch control panel and touch control device

Patent metadata

Field	Value
Publication number	US-10481730-B2
Application number	US-201515038187-A
Country	US
Kind code	B2
Filing date	Nov 11, 2015
Priority date	Jun 11, 2015
Publication date	Nov 19, 2019
Grant date	Nov 19, 2019

Abstract

The present disclosure provides a driving method of a touch control module, a drive circuit of a touch control module, a touch control module, a touch control panel and a touch control device. The driving method comprises: in a touch control time period, providing touch control scan signals to each of the plurality of touch control electrodes, and meanwhile providing respective touch control scan signals to control lines and data lines connected with each of the plurality of pixel driving circuits. Since the touch control electrodes and the pixel driving circuits are provided with touch control scan signals synchronously, the influence of other capacitances except for the touch control sensors to the touch control electrodes during touch control scan period can be released or even eliminated.

First claim

The invention claimed is:

1. A method for driving a self-capacitive AMOLED touch control module in a manner of time division, the self-capacitive AMOLED touch control module comprising:
a plurality of touch control electrodes; and
a plurality of pixel driving circuits, each of the plurality of pixel driving circuits corresponding to one pixel unit in the AMOLED touch control module;
wherein the method comprises:
in a display time period, performing pixel display driving so as to control the light emitting state of each pixel unit;
in a touch control time period, providing a touch control scan signal to each of the plurality of touch control electrodes, and meanwhile providing the touch control scan signal to the control lines and data lines connected with each of the plurality of pixel driving circuits, the data lines being configured to transmit a data voltage;
wherein the touch control scan signal provided to the control lines and the data lines connected with each pixel driving circuit has such an amplitude value that transistors in the pixel driving circuits maintain operation states which they have before entering the touch control time period.

2. The method as claimed in claim 1 , wherein the self-capacitive AMOLED touch control module is a built-in touch control module, and wherein a plurality of cathode electrodes arranged corresponding to a plurality of pixel units are multiplexed as the plurality of touch control electrodes.

3. The method as claimed in claim 1 , wherein the touch control scan signal provided to the control lines and the data lines connected with each pixel driving circuit is superimposition of the touch control scan signal provided to the touch control electrodes and the display driving signal provided to the control lines and the data lines before entering into the touch control time period.

4. The method as claimed in claim 1 , wherein providing touch control scan signals to the touch control electrodes comprises: providing touch control scan signals to the touch control electrodes through a gate metal layer comprised in the self-capacitive AMOLED touch control module.

5. A driving circuit of a self-capacitive AMOLED touch control module, the self-capacitive AMOLED touch control module being driven in a manner of time division and comprising a plurality of touch control electrodes and a plurality of pixel driving circuits, wherein each of the plurality of pixel driving circuits corresponds to one pixel unit in the AMOLED touch control module, and wherein the driving circuit comprises:
a touch control driving unit configured to:
in a display time period, perform pixel display driving so as to control the light emitting state of each pixel unit
in a touch control time period, provide a touch control scan signal to each of the plurality of touch control electrodes, and meanwhile provide the touch control scan signal to the control lines and data lines connected with each of the plurality of pixel driving circuits, the data lines being configured to transmit a data voltage;
wherein the touch control scan signal provided by the touch control driving unit to the control lines and the data lines connected with each pixel driving circuit has such an amplitude value that transistors in the pixel driving circuits maintain operation states which they have before entering the touch control time period.

6. The driving circuit of a touch control module as claimed in claim 5 , wherein the self-capacitive AMOLED touch control module is a built-in touch control module, wherein a plurality of cathode electrodes arranged corresponding to a plurality of pixel units are multiplexed as the plurality of touch control electrodes.

7. The driving circuit of a touch control module as claimed in claim 5 , wherein the touch control scan signal provided to the control lines and the data lines connected with each pixel driving circuit is superimposition of touch control scan signals provided to the touch control electrodes and the display driving signal provided to the control lines and the data lines before entering into the touch control time period.

8. The driving circuit of a touch control module as claimed in claim 5 , the self-capacitive AMOLED touch control module comprising a gate metal layer, wherein the touch control driving unit provides touch control scan signals to the touch control electrodes through the gate metal layer.

9. The driving circuit of a touch control module as claimed in claim 5 , each of the plurality of pixel driving circuits comprising a drive transistor, a storage capacitor, a reset module, a charge control module and a light emitting control module, wherein:
the gate of the drive transistor is connected to the reset module, the charge control module and the first end of the storage capacitor, the first terminal of the drive transistor is connected to the light emitting control module and the charge control module, the second terminal of the drive transistor is connected to the light emitting control module and the charge control module;
the first end of the storage capacitor is connected to the gate of the drive transistor, the second end of the storage capacitor is connected to a first level line;
the reset module is connected to a first scan line and a common electrode line;
the charge control module is connected to a second scan line and a data line; and
the light emitting control module is connected to a light emitting control line, the first level line and an anode of an organic light emitting diode; and
wherein the touch control driving unit provides the touch control scan signal to the data line, the first scan line, the common electrode line, the light emitting control line, the second scan line and the first level line in the touch control time period.

10. The driving circuit of a touch control module as claimed in claim 9 , wherein the reset module comprises a reset transistor, the gate of the reset transistor being connected with the first scan line, the first terminal of the reset transistor being connected with the gate of the drive transistor and the first end of the storage capacitor, the second terminal of the reset transistor being connected with the common electrode line.

11. The driving circuit of a touch control module as claimed in claim 9 , wherein the charge control module comprises:
a data input transistor, the gate of the data input transistor being connected with the second scan line, the first terminal of the data input transistor being connected with the data line, the second terminal of the data input transistor being connected with the second terminal of the drive transistor; and
a charge control transistor, the gate of the charge control transistor being connected with the second scan line, the first terminal of the charge control transistor being connected with the gate of the drive transistor, the second terminal of the charge control transistor being connected with the first terminal of the drive transistor.

12. The driving circuit of a touch control module as claimed in claim 9 , wherein the light emitting control module comprises:
a first light emitting control transistor, the gate of the first light emitting control transistor being connected with the light emitting control line, the first terminal of the first light emitting control transistor being connected with the first level line, the second terminal of the first light emitting control transistor being connected with the first terminal of the drive transistor; and
a second light emitting control transistor, the gate of the second light emitting control transistor being connected with the light emitting control line, the first terminal of the sec

Assignees

• Boe Technology Group Co Ltd
• Beijing Boe Optoelectronics Tech Co Ltd

Inventors

• Yang Shengji
• Dong Xue
• Wang Haisheng
• Chen Xiaochuan
• Zhao Weijie
• Liu Yingming
• Ding Xiaoliang
• Li Changfeng
• Liu Wei

Classifications

• G06F3/044

  by capacitive means · CPC title

• G09G2320/0219

  Reducing feedthrough effects in active matrix panels, i.e. voltage changes on the scan electrode influencing the pixel voltage due to capacitive coupling · CPC title

• G09G2300/0861

  with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes · CPC title

• G09G2300/0842

  forming a memory circuit, e.g. a dynamic memory with one capacitor · CPC title

• G09G2354/00

  Aspects of interface with display user · CPC title