goa unit and its driving method, goa circuit, display device

Abstract

The invention discloses a GOA unit and a driving method thereof, a GOA circuit and a display device, and belongs to the field of display technology. The GOA unit includes: a buffer module, a pull-up module, a pull-down module, a holding module, a charging module and a discharging module; the buffer module is connected to the input signal terminal and the pull-up node respectively; the pull-up module is connected to the first clock signal terminal and the pull-up node respectively. The node is connected to the output signal terminal; the pull-down module is connected to the output signal terminal, the reset signal terminal and the power signal terminal respectively; the holding module is respectively connected to the first clock signal terminal, the power signal terminal, the pull-up node, the pull-down node and the second clock signal terminal. connection; the charging module is connected to the pull-up node and the output signal terminal respectively; the discharge module is connected to the reset signal terminal, the pull-up node, the power signal terminal, the pull-down node and the output signal terminal respectively, solving the problem of the pull-up node and the output signal terminal of the GOA unit There is a noise problem, and the noise at the pull-up node and output signal terminal is reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a GOA unit, a driving method thereof, a GOA circuit, and a display device. Background technique [0002] Liquid crystal displays include active liquid crystal displays and passive liquid crystal displays. In an active liquid crystal display, each pixel has a thin film transistor (English: Thin Film Transistor; TFT for short), its gate (Gate) is connected to the horizontal scanning line, and the drain (Drain) is connected to the vertical data line. The source (Source) is connected to the pixel electrode. Applying sufficient voltage on the horizontal scanning line will turn on all the TFTs on the line, and at this time, the pixel electrodes on the horizontal scanning line will be connected to the data lines in the vertical direction, thereby writing the display signal voltage on the data line Into the pixel, control the light transmittance of different liquid crystals to achieve...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of noise in the pull-up node and output signal end of the GOA unit in the prior art, the present invention provides a GOA unit and its driving method, a GOA circuit, and a display device

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