Shifting register, grid drive circuit, display panel and display device

Abstract

The invention discloses a shifting register, a grid drive circuit, a display panel and a display device. The shifting register comprises an input module, a reset module, an upward pull module, a first node downward-pull module, a second node downward-pull module, an output control module and an output noise reduction module. The input module is used for improving the level of a first node. The reset module is used for reducing the level of the first node. The upward pull module is used for improving the level of a second node. The first node downward-pull module is used for reducing the level of the first node. The second node downward-pull module is used for reducing the level of the second node. The output control module controls a scanning signal output end to output a signal of a second clock signal end or enables a low-level signal end to be connected with a third node, so that a function of outputting a scanning signal in a corresponding time period of the shifting register is achieved. In addition, the output noise reduction module conducts filtering and noise reduction on the signal of the third node and outputs the signal to the scanning signal output end, accordingly the noise of the signal output to the scanning signal output end is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a shift register, a gate drive circuit, a display panel and a display device. Background technique [0002] At present, with the development of liquid crystal display technology, the competition in the liquid crystal panel industry is becoming more and more fierce. Reducing the production cost of liquid crystal display panels has become the first choice for panel manufacturers to improve their competitiveness. In order to reduce the production cost of display panels, generally, related technologies Technical personnel in the field use the edge of the display panel to build a gate drive circuit. The gate drive circuit includes multiple shift registers, each of which corresponds to a gate line. Multiple shift registers are arranged in series, and two adjacent shift registers There are trigger signals transmitted step by step between the bit registers. After each shift register rec...

AI Technical Summary

Problems solved by technology

[0005] An embodiment of the present invention provides a shift register, a gate drive circuit, a display panel, and a display device, which are used to solve the problems in the prior art that the scanning signal output by the shift register has relatively large noise and high power consumption

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