Shifting register unit and driving method thereof, shifting register and display device

Abstract

The invention provides a shifting register unit and a driving method thereof, a shifting register and a display device. The shifting register unit comprises a grid driving signal output end, a clock signal end, a pull-up transistor, a pull-down transistor, a pull-down node control module and a pull-up node control module, wherein the pull-down node control module controls the potential of a pull-down node to be a low potential in an input stage, controls shutoff of the pull-down transistor in an output stage, and controls turn-on of the pull-down transistor in a resetting stage, so that the grid driving signal output end outputs a low level; the pull-up node control module controls the potential of a pull-up node to be pulled up to a high potential in an input stage, and controls turn-on of the pull-up transistor in an output stage, so that the grid driving signal output end outputs a clock signal, controls the potential of the pull-up node to be pulled down to a low level in a resetting stage, and controls shutoff of the pull-up transistor in a remaining stage. By adopting a simple circuit structure, a two-way scanning function is realized so as to reduce the power consumption.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register unit, a driving method thereof, a shift register and a display device. Background technique [0002] TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Field Effect Transistor Liquid Crystal Display) driver includes a gate driver and a data driver. The shift register unit is often used in the gate driver of the LCD panel. The bit register unit is connected, and 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 multi-stage shift register unit forms a shift register, and the gate drive signal is output through the shift register. , to scan each row of pixels on the LCD panel row by row. [0003] Existing shift register units and shift registers cannot realize the bidirectional scanning function with a simple circuit structure, and need to use rela...

AI Technical Summary

Problems solved by technology

[0003] Existing shift register units and shift registers cannot realize the bidirectional scanning function with a simple circuit structure, and need to use more transistors, resulting in high power consumption

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