Shifting register, driving method thereof and gate driving circuit

Abstract

The invention relates to a shift register, a driving method thereof and a gate driving circuit. The shift register comprises an input sub-circuit, a first reset sub-circuit, an output sub-circuit, a pull-down sub-circuit, a pull-down control sub-circuit and a second reset sub-circuit. The input sub-circuit provides a signal of a first voltage source for a pull-up node and a first node under the control of a signal input end; the first reset sub-circuit provides a signal of a second voltage source for the pull-up node and the first node under the control of a reset end; the output sub-circuit outputs a signal of a clock signal end to a signal output end according to the level of the pull-up node; the pull-down control sub-circuit controls the level of a pull-down node according to the levelof the pull-up node and a signal of a third voltage source; and the pull-down sub-circuit outputs the level of a fourth voltage source to the pull-down node according to the level of the first node,and outputs the level of the fourth voltage source to the pull-up node and the signal output end according to the level of the pull-down node. According to the invention, the problem that the pull-upnode and the pull-down node compete with each other during bidirectional scanning is solved.

Description

technical field [0001] Embodiments of the present disclosure relate to but are not limited to the field of display technology, and in particular, relate to a shift register of a shift register unit, a driving method thereof, and a gate driving circuit. Background technique [0002] To simplify the structure of the display panel, a gate driver circuit (Gate Driver Array, GOA) formed on the array substrate may be used to drive the gate lines. The gate drive circuit includes multiple cascaded shift registers, and each shift register drives a gate line. When a shift register outputs a conduction signal, it can also trigger the work of other shift registers, so only a few A simple control signal can realize the driving of all gate lines. [0003] However, there is a problem in the GOA circuit that the pull-up node PU and the pull-down node PD compete with each other (that is, the two influence each other), which results in poor stability of GOA driving and affects the display qu...

AI Technical Summary

Problems solved by technology

[0003] However, there is a problem in the GOA circuit that the pull-up node PU and the pull-down node PD compete with each other (that is, the two interact with each other), resulting in poor stability of the GOA drive and affecting the display quality of the display panel.

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