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

Abstract

The invention provides a shift register, a grid drive circuit and a driving method thereof, and a display device, belonging to the technical field of display and being capable of solving the problems that the input signal of the shift register in the prior art has interference at the input stage, and more DC voltage signals are used. The shift register includes an input module, an output module, a reset control module, a pull-up node reset module and an output signal reset module, the input module is used to pre-charge the pull-up node under the control of the signal input at the first signal input end, the output module is used to output the signal input from a first clock signal input end through the signal output end under the control of the potential of the pull-up node; and the reset control module is used to control whether the pull-up node reset module and the output signal reset module are operated under the control of the reset signal input at the second signal input end to reset the pull-up node and the signal output end respectively.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a shift register, a gate driving circuit and a driving method thereof, and a display device. Background technique [0002] At present, with the vigorous development of the display field, the cost requirement of the display panel is getting lower and lower. How to effectively reduce the production cost of the panel is related to the strength of the competitiveness of the panel developers. In order to further reduce the manufacturing cost of the display panel, the relevant technicians will use the edge of the panel to design the gate drive circuit. The gate drive circuit includes a plurality of gate shift registers. In the display stage, each row of gate shift registers controls the row Display when it needs to be displayed. There is a connection relationship between each shift register. When the shift register of the upper stage receives the signal and completes the ...

AI Technical Summary

Problems solved by technology

[0003] At present, the problems encountered in the design of the gate drive circuit in the display panel are mainly concentrated in the signal input stage, and the reset signal will interfere with the input signal, especially in the commonly used oxide thin film transistor (TFT) in OLED display, oxide TFT It is usually depletion type, and it is often in a conducting state in a floating state, and it will write an external impurity signal or the output signal of the next stage.

And in the shift register, two DC signals are often used, namely the DC high voltage signal and the DC low voltage signal, and the circuit structure is relatively complicated.

Images