Shift register unit, gate drive circuit and display device

Abstract

The embodiment of the invention provides a shift register unit, a gate drive circuit and a display device, and can enhance the output capacity of a signal output end and shorten the fall time of output waveform. The shift register unit provided by the invention comprises a first output module, a second output module, an input module, a drop-down control module, a drop-down module and a reset module, wherein under the control of a pull-up control node, the signal of a clock signal end is output to a signal output end; under the signal control of a signal input end, the voltage of a first power supply end is output to the pull-up control node; under the signal control of the signal input end, the signal of a drop-down control node drops down to the voltage of a second power supply end; under the control of the drop-down control node, the signals of the pull-up control node and the signal output end drop down to the voltage of the second power supply end; under the control of a reset signal end, the signal of the first power supply end is output to the drop-down control node. The shift register unit, the gate drive circuit and the display device, provided by the embodiment of the invention, are applied to the production and manufacturing of display panels.

Description

technical field [0001] The invention relates to the technical field of display driving circuits in the electrical and electronic industry, in particular to a shift register unit, a gate driving circuit and a display device. Background technique [0002] Liquid Crystal Display (LCD for short) has been widely used in mobile phones, tablet computers, televisions, monitors, notebook computers, In products or components with display functions including cameras, video cameras, digital photo frames, navigators, etc. [0003] In the existing liquid crystal display, the gate drive circuit often adopts the GOA (Gate Driver on Array, array substrate row drive) design to integrate the TFT (Thin Film Transistor, thin film field effect transistor) gate switch circuit on the array substrate of the display panel. In order to form a scan drive for the display panel, and use a gate line drive circuit to provide a scan signal to the gate scan line of the pixel array to realize the progressive...

AI Technical Summary

Problems solved by technology

[0004] However, as the resolution of liquid crystal displays becomes higher and higher, the signal writing time of the data drive circuit becomes shorter and shorter, and the gate drive circuit provided by the prior art will cause the output waveform of the gate drive circuit to decline. A long time will lead to insufficient pixel voltage writing, which will affect the display screen and display quality of the liquid crystal display

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