Shift register unit and gate drive circuit

Abstract

The embodiment of the invention provides a shift register unit and a gate drive circuit. The gate drive circuit is used for reducing the dimensions of the shift register unit and simultaneously can provide stable output signals and effectively maintain the potential of an output end. The shift register unit comprises an input unit, an output unit, a pull-up unit, a pull-down control unit and a pull-down unit, wherein the input unit is used for responding to input signals and providing the input signals to the output unit; the output unit is used for responding to the voltage of a first node and providing a first clock signal to an output terminal; and the pull-up unit is used for responding to the voltage of the first nose and providing the first clock signal to the first node; the pull-down control unit is used for responding to the first clock signal, a second clock signal and the voltage of the first node and providing the first clock signal, the second clock signal and the voltage of a negative power pole to the pull-down unit; and the pull-down unit is used for responding to the voltage of a second node and providing the voltage of the negative power pole to the first node and the output terminal.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, 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. [0003] The gate drive circuit with the above structure is arranged on the LCD panel, and each stage of the shift register unit includes such as figure 1 structure shown. figure 1 The shift register unit shown includes a stor...

AI Technical Summary

Problems solved by technology

[0004] However, the introduction of the storage capacitor C1, the increase in the size of the thin film transistor M3, and more control signals require a larger wiring space, which makes the size of the entire shift register unit larger, which in turn leads to a larger volume of the liquid crystal display.

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