Shift register unit and driving method thereof, grid drive circuit, and display device

Abstract

The invention provides a shift register unit and driving method thereof, a grid drive circuit, and a display device, relating to the technical field of display and aiming to reduce the noise of the output end and internal nodes of a shift register at an inoperative state. The shift register unit includes a pull-up control module, a pull-down control module, a noise reduction module, and a resetting module, the pull-up control module outputs the signal of a signal input end to a pull-up node under the control of the signal input end and outputs the first clock signal of a first clock signal input end to a signal output end under the control of the pull-up node, the pull-down control module pulls the potential of a pull-down node down to the potential of a first voltage end under the control of a second clock signal input end and the pull-up node, the noise reduction module pulls the potentials of the pull-up node and the signal output end down to the potential of the first voltage end under the control of the pull-down node, and the resetting module pulls the potentials of the pull-up node and the signal output end down to the potential of the first voltage end under the control of a resetting signal 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] Liquid Crystal Display (LCD for short) has the advantages of low radiation, small size and low power consumption, and is widely used in electronic products such as notebook computers, flat-screen TVs or mobile phones. [0003] A liquid crystal display includes a color filter substrate and an array substrate that are opposed to each other, wherein the array substrate can be divided into a display area and a peripheral area located around the display area. The above display area is provided with gate lines and data lines intersecting horizontally and vertically, and the intersections of the gate lines and data lines define a plurality of pixel units. The peripheral area is provided with a data driving circuit, which can latch the input display data ...

AI Technical Summary

Problems solved by technology

However, due to the influence of the circuit structure of the shift register and the coupling capacitance of its internal driving transistor itself, the charges stored in the circuit nodes and the driving transistor are not fully released, so that when the shift register is in a non-working state, the Cause noise interference to the output of the shift register and reduce the stability of the GOA circuit

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