Shift register unit and gate driving circuit

Abstract

The present invention provides a shift register unit and a gate driving circuit, wherein the shift register unit and the gate driving circuit are provided for reducing noise interference, improving shift register stability, and reducing a size of the shift register unit. The shift register unit comprises: an input module for responding to an input signal and providing a first voltage signal for an input module of an output terminal; a reset module for responding to a reset signal and providing a second voltage signal for a first node adopted as an input module output terminal in the input module; an output module for responding to a voltage of the first node, and providing a first clock signal for an output module of the output terminal; a pull-down control module for responding to a second clock signal, providing the second clock signal for a second node, responding to the voltage of the first node or the output terminal, and providing a power supply negative voltage for a second node; and a pull-down module for responding to a voltage of the second node, and providing the power supply negative voltage for the first node and the output terminal.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a shift register unit and a gate drive circuit. Background technique [0002] The thin film transistor liquid crystal display (TFT-LCD) driver mainly includes a gate driver and a data driver. Among them, the gate driver converts the input clock signal through the shift register unit and then adds it to the gate line of the liquid crystal display panel. The gate drive circuit It can be formed on the LCD panel with the same process as the TFT and simultaneously with the TFT. The gate driving circuit includes a shift register unit having multiple stages, and each stage is connected to a corresponding gate line to output a gate driving signal. The stages of the gate drive circuit are connected to each other, the start signal is input to the first stage of each stage and the gate drive signal is sequentially output to the gate line, wherein the input terminal of the previous s...

AI Technical Summary

Problems solved by technology

However, the change of each AC clock signal in the gate drive circuit will cause interference noise in the circuit, affecting the output of the signal and the stability of the shift register unit; at the same time, more thin film transistors require a larger wiring space, making The size of the entire shift register unit is large, which in turn leads to a large volume of the liquid crystal display

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