Touch control drive circuit, drive method thereof, array substrate and touch control display device

A technology of touch drive circuit and touch drive electrode, which is applied in the direction of circuits, electrical components, electric solid devices, etc., can solve the problems of the large number of leads on the edge of the touch display screen and the difficulty of realizing narrow frame design, etc., and achieve saving production Steps, reduced number of leads, effect of reduced number of leads

Active Publication Date: 2015-08-12
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the drive chip outputs high-frequency current signals to the touch drive electrodes through leads. Since the drive chip and the array substrate are independent of each other, the leads ...

Method used

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  • Touch control drive circuit, drive method thereof, array substrate and touch control display device
  • Touch control drive circuit, drive method thereof, array substrate and touch control display device
  • Touch control drive circuit, drive method thereof, array substrate and touch control display device

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Embodiment 1

[0029] This embodiment provides a touch drive circuit, which is arranged on an array substrate, such as figure 1 As shown, it includes a plurality of shift register units 1 cascaded with each other, and also includes a plurality of output control units 2. The output terminal of the shift register unit 1 of each stage is connected to a touch drive electrode through an output control unit 2 3. Each touch driving electrode 3 includes one or more common electrodes. The output control unit 2 receives the touch enable signal TX_EN, the common voltage signal VCOM, the touch scan signal EXVCOM, and the output signal of the shift register unit 1 connected to the output control unit 2, and the touch enable signal TX_EN and the above Under the control of the output signal, the touch scan signal EXVCOM is output to the touch drive electrode 3 connected to the output control unit 2 in the first time period. The first time period is the scan allocated to the touch drive electrode 3 within one...

Embodiment 2

[0073] An embodiment of the present invention also provides a driving method for driving the touch driving circuit described in the first embodiment, including: during a touch scan time period of one frame, an output control unit receives a touch enable signal and a common voltage Signal, touch scanning signal, and receiving the output signal of the shift register unit connected to the output control unit; the output control unit sends the touch control unit connected to the output control unit within the first time period according to the touch enable signal and the output signal The driving electrode is controlled to output a touch scan signal, and the first time period is a scan time allocated to the touch driving electrode within one frame.

[0074] In the above-mentioned touch driving circuit driving method, during the touch scan time period, the shift register unit also receives the initial shift signal, and after receiving the initial shift signal, the shift register is sel...

Embodiment 3

[0078] An embodiment of the present invention also provides an array substrate, including any touch drive circuit provided in the first embodiment. An embodiment of the present invention also provides a touch display device provided with the above-mentioned array substrate. Exemplarily, the touch display device in the embodiment of the present invention is a mutual capacitive touch display screen.

[0079] The touch display device in the embodiment of the present invention is provided with the touch drive circuit described in the first embodiment. Compared with the prior art, the touch display device in the embodiment of the present invention is easier to implement a narrow frame.

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Abstract

The invention discloses a touch control drive circuit, a drive method thereof, an array substrate and a touch control display device, and relates to the field of display. By means of the touch control drive circuit, the drive method thereof, the array substrate and the touch control display device, the number of leads for driving touch control drive electrodes can be reduced, and convenience is provided for narrow edges. The method includes the steps that in the one frame of touch control scanning time quantum, output control units receive touch control enable signals, public voltage signals, touch control scanning signals and output signals of shifting register units connected with the output control units; the output control units output the touch control scanning signals to the touch control drive electrodes connected with the output control units during the first time quantum according to the touch control enable signals and the output signals, and the first time quantum is the scanning time distributed to the touch control drive electrodes within one frame of time. The touch control drive circuit and the drive method thereof are used for driving the touch control display device to achieve the touch control function.

Description

Technical field [0001] The present invention relates to the field of display, in particular to a touch driving circuit and a driving method thereof, an array substrate and a touch display device. Background technique [0002] The in-cell touch screen integrates the touch function and the display function. According to the different principles of its touch function realization, it can be divided into a resistive touch screen and a capacitive touch screen. Among them, the capacitive touch screen touch function is realized by sensing the current of the human body. At present, the commonly used capacitive touch screen includes an array substrate and a color film substrate. The array substrate is provided with several electrodes arranged in the X direction (called Are touch drive electrodes), a number of electrodes (called touch sensing electrodes) arranged in the Y direction are arranged on the color filter substrate, where the Y direction is perpendicular to the X direction, and the...

Claims

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Application Information

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IPC IPC(8): G06F3/044
CPCG06F3/0412G06F3/04166G06F3/044G06F2203/04103H01L27/124
Inventor 樊君李付强黄飞乔赟
Owner BOE TECH GRP CO LTD
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