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

Abstract

The embodiment of the invention provides a shift register unit and a driving method thereof, a gate drive circuit and a display device. The shift register unit comprises an input circuit, a first pull-up point, a second pull-up point, a sequential control circuit, a first output circuit, a second output circuit, a pull-down control circuit, a first pull-down circuit and a second pull-down circuit. The input circuit controls voltage of the first pull-up point. The sequential control circuit is coupled with the first pull-up point and the second pull-up point and is configured to control the voltage of the second pull-up point based on the voltage of the first pull-up point. The first output circuit controls voltage of the first output end. The second output circuit controls voltage of the second output end. The pull-down control circuit controls voltage of a pull-down point. The first pull-down circuit controls voltage of the first pull-up point. The second pull-down circuit controls voltage of the second pull-up point. The shift register unit can output multi-level gate drive signals and can regulate sequential relation between the gate drive signals.

Description

technical field [0001] The invention relates to display technology, in particular to a shift register unit, a driving method, a gate driving circuit and a display device. Background technique [0002] On the display panel, in order to achieve a narrower frame. The gate drive circuit adopts GOA (Gate on Array) technology. The gate drive circuit is directly integrated on the array substrate, replacing an independently provided gate drive chip. [0003] Such a gate drive circuit includes multiple stages of shift register cells (GOA cells). Usually, the GOA units of each level output gate driving signals to the pixel units of the first level. Therefore, the structure of the gate driving circuit is still relatively complicated and takes up a lot of space. [0004] In order to further optimize the frame space, the GOA unit capable of outputting gate driving signals for multi-level pixel units is particularly important. Contents of the invention [0005] Embodiments of the in...

AI Technical Summary

Problems solved by technology

Usually, the GOA unit of each level outputs a gate drive signal for a level of pixel unit, therefore, the structure of the gate drive circuit is still relatively complicated and takes up more space

Images