Touch drive unit as well as driving method and touch drive circuit of touch drive unit

A touch-driven, low-level technology, applied in the direction of electrical digital data processing, static memory, instruments, etc., can solve the problems of unstable output, complex structure, large noise, etc., achieve stable output, less number of components, and reduce noise Effect

Active Publication Date: 2015-04-08
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problems of complex structure, large area, unstable output and high noise in the existing touch driving circuit, and provides a touch driving unit with simple structure, small area, stable output and low noise, its driving method, and touch control unit. control drive circuit

Method used

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  • Touch drive unit as well as driving method and touch drive circuit of touch drive unit
  • Touch drive unit as well as driving method and touch drive circuit of touch drive unit
  • Touch drive unit as well as driving method and touch drive circuit of touch drive unit

Examples

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Embodiment 1

[0043] Such as Figure 1 to Figure 3As shown, this embodiment provides a touch drive unit, which includes a shift register module, a gating module, and an output module, wherein:

[0044] The shift register module includes a first control port K1, an access port IN, and a trigger signal output port SOUT, and is connected to the gating module for generating a trigger signal;

[0045] The gating module includes a second control port K2 and a gating signal port KX, and is connected to the shift register module for controlling the output module;

[0046] The output module includes an output port OUT, a stable level port, and a touch signal port VC, which are used to output a stable level or a touch signal (usually a high-frequency alternating signal) according to the control of the gating module.

[0047] Preferably, the stable level port is a common voltage port VCOM, that is, the port is connected to a common voltage, so that the scan electrode is loaded with a common voltage w...

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Abstract

The invention provides a touch drive unit as well as a driving method and a touch drive circuit of the touch drive unit, belongs to the technical field of touch drive and aims at solving the problems of complex structure, large area, unstable output and large noise of the existing touch drive circuit. The touch drive unit comprises a shift register module, a gating module and an output module, wherein the shift register module comprises a first control port, an access port and a trigger signal output port, and is connected with the gating module and used for generating a trigger signal; the gating module comprises a second control port and a gating signal port, and is connected with the shift register module and used for controlling the output module; the output module comprises an output port, a stable level port and a touch signal port, and is used for outputting a stable level or touch signal according to the control of the gating module.

Description

technical field [0001] The invention belongs to the technical field of touch driving, and in particular relates to a touch driving unit, a driving method thereof, and a touch driving circuit. Background technique [0002] The mutual capacitive touch structure is mainly composed of a plurality of scanning electrodes (Tx) and sensing electrodes (Rx) crossing each other. Each scanning electrode receives a touch signal (such as a high-frequency alternating signal) in turn, so that a sensing signal is generated in the sensing electrode. When a touch occurs, the capacitance between the scanning electrode and the sensing electrode at the touch point changes, and the capacitance in the sensing electrode changes. The sensing signal also changes, and the touch position can be obtained by analyzing the sensing signal. [0003] During the touch process, each scan electrode should be provided with touch signals in turn, and the scan electrodes should maintain a stable level when there i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/044
CPCG06F3/0416G06F3/044G06F3/04166G11C19/28
Inventor 郝学光李成
Owner BOE TECH GRP CO LTD
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