Shifting register unit, driving method, grid driving circuit and display device

Abstract

The invention provides a shifting register unit, a driving method, a gate driving circuit and a display device. The shifting register unit comprises an anti-creeping circuit connected with a pull-up node and a control node, and a pull-down circuit is also connected with the control node. Since the anti-creeping circuit can control the potential of the control node based on the potential of the pull-up node, when the potential of the pull-up node is an effective potential, the potential of the control node can also be an effective potential. Moreover, when the potential of the pull-up node is an effective potential, the gate potential of the transistor included in the pull-down circuit is an ineffective potential, so that the gate-source voltage difference of the transistor connected with the control node can be kept at the ineffective potential, namely, the transistor connected with the control node is kept to be turned off, and the influence on the potential of the pull-up node is avoided. That is to say, the pull-down circuit can maintain the stability of the potential of the pull-up node based on the potential of the control node, and the problem that the transistor is turned onby mistake due to electric leakage is avoided.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register unit, a driving method, a gate driving circuit and a display device. Background technique [0002] As a gate driving circuit fabricated on an array substrate, a shift register is widely used in the display field. The shift register usually includes a plurality of cascaded shift register units, and each shift register unit is used to drive a row of pixel units. The plurality of cascaded shift register units can realize the step-by-step shifting of each row of pixel units in the display device. Line scan driver to display images. [0003] Currently, the transistors included in each shift register unit are oxide thin film transistors (thin film transistors, TFTs) manufactured by an oxide process. However, since the oxide TFT is a depletion type TFT, the oxide TFT is prone to electric leakage after a long time of use. Moreover, when the leakage phenomenon is rela...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a shift register unit, a driving method, a gate drive circuit and a display device, which can solve the problem in the related art that the shift register unit fails to work due to transistor leakage phenomenon, and the technical solution is as follows :

Images