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

A shift register and gate connection technology is applied in the fields of display devices, shift register units and their driving, and gate drive circuits, and can solve the problem of pull-down, abnormal display of display panels, and false output gate scans of shift register units. signal problems

Active Publication Date: 2017-08-18
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the leakage current of the thin film transistor in the shift register unit, it is difficult to keep the potential of the pull-down node PD at a high level, so that the pull-up node PU cannot be completely pulled down, which makes it easy for the shift register unit to output the gate scan signal by mistake. , causing the display panel to display abnormally

Method used

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

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Embodiment Construction

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0034] The switching transistors and driving transistors used in all embodiments of the present invention can be thin film transistors or field effect transistors or other devices with the same characteristics. Since the source and drain of the switching transistors used here are symmetrical, the source, Drains are interchangeable. In the embodiment of the present invention, in order to distinguish the two poles of the transistor except the gate, one pole is c...

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PUM

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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 used for reducing the probability that the signal output end of a shift register unit abnormally outputs the grid scanning signal in the vertical blanking time to result in the abnormal display of the display panel. The shift register unit includes a first input module, a second input module, an output module, a pull-down control module, a pull-down module and a potential holding module. The potential holding module is used to pull the potential of the pull-down node up to a second voltage terminal under the control of holding the potential signal terminal or to pull the potential of the pull-up node down to the first voltage terminal.

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] A display, such as a TFT-LCD (Thin Film Transistor Liquid Crystal Display, Thin Film Transistor Liquid Crystal Display) is provided with an array substrate, wherein the array substrate can be divided into a display area and a wiring area located around the display area. Wherein the peripheral area is provided with a gate driver for progressively scanning the gate lines. Existing gate drivers often use a GOA (Gate Driver on Array, array substrate row drive) design to integrate a TFT (Thin Film Transistor, thin film field effect transistor) gate switch circuit in the above peripheral area to form a GOA circuit. [0003] A traditional GOA circuit is composed of multiple shift register units cascaded, and each shift register unit corresponds to a gate...

Claims

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Application Information

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IPC IPC(8): G09G3/36G11C19/28
CPCG09G3/3677G11C19/28
Inventor 王珍孙建乔赟詹小舟黄飞张寒秦文文丛乐乐王争奎
Owner BOE TECH GRP CO LTD
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