Shift register unit, drive method therefor, grid drive circuit, and display device

Abstract

The embodiment of the invention provides a shift register unit, a drive method therefor, a grid drive circuit and a display device, relates to the technical field of display, enables a touch control scanning signal and a grid scanning signal not to interfere with each other, and prevents a grid scanning signal outputted by the shift register unit from being pulled down or avoids a condition of no signal output. The shift register unit comprises a first input module which enables a signal of a first voltage end to be outputted to a pull-up node; a second input end which enables a signal of a second voltage end to be outputted to the pull-up node; a pull-up module which enables a signal of a first clock signal input end to be outputted to a signal output end; a pull-down control module which enables the signals of the first clock signal input end, a second clock signal input end or a third voltage end to be outputted to a pull-down node; a touch control pull-down module which enables the level of the signal output end to be pulled down to a third voltage end; a charging module which enables the signal of a touch control signal control end to be outputted to the pull-up node; and a noise reduction module which enables the levels of the pull-up node and the signal output end to the third voltage end.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a shift register unit, a driving method thereof, a gate driving circuit, and a display device. Background technique [0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor-Liquid Crystal Display) or OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display is provided with an array substrate, wherein, the array substrate can be divided into display area and display area peripheral wiring area. Wherein the peripheral area is provided with a gate drive circuit for progressively scanning the gate lines. Existing gate drive circuits often use GOA (GateDriver on Array, array substrate row drive) design to integrate TFT (Thin Film Transistor, Thin Film Field Effect Transistor) gate switch circuits in the above peripheral area to form gate drive circuits. [0003] In addition, with the continuous development of touch (Touch) technol...

AI Technical Summary

Problems solved by technology

However, due to the leakage current of the thin film transistor in the shift register unit, after the touch scan signal is input, when the output terminal of the shift register unit continues to scan the gate line, the gate scan signal output by the shift register unit is blocked. Pull low or no signal output, thus affecting the normal display of the monitor

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