Shift register unit and driving method thereof, shift register circuit and display device

Abstract

The invention provides a shift register unit and its driving method, a shift register circuit, and a display device. The shift register unit includes: a charging module, one end is connected to the input end, and the other end is connected to the pull-up node to generate a pull-up signal; the pull-up module is connected to the pull-up node at one end, and the other end is connected to the first clock signal end, Charge the output terminal; the first pull-down control module, one end is connected to the second clock signal end, and the other end is connected to the low voltage end to generate a pull-down control signal; the second pull-down control module, one end is connected to the pull-down control node, and the other end is connected to the The pull-up node is connected to generate a pull-down signal; the first pull-down module, one end is connected to the first reset end, the other end is connected to the output end, and the output end is discharged; the second pull-down module is connected to the pull-down node at one end, and the other end is connected to the output Terminal connected to discharge the output terminal; and a reset module, one terminal connected to the second reset terminal, and the other terminal connected to the pull-up node to reset the pull-up node.

Description

technical field [0001] The present invention relates to the field of display technology, and more specifically, to a shift register unit and a driving method thereof, a shift register circuit and a display device. Background technique [0002] Flat-panel displays are widely used because of their ultra-thin and energy-saving features. Shift registers are used in most flat-panel displays. The shift register implemented by the GOA (Gate Drive on Array) method can save the gate drive IC and reduce a manufacturing process, so it not only reduces the manufacturing cost of the flat-panel display. The cost also shortens the manufacturing cycle to a certain extent. [0003] Therefore, GOA technology has been widely used in the manufacture of flat panel displays in recent years. The power consumption of GOA itself is larger than that of ordinary gate drive ICs. In order to reduce the power consumption of the GOA unit itself, 4 or more clock (CLK) signals are often used (the number o...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a shift register unit and its driving method, a shift register circuit, and a display device, which are used to solve the problems caused by the long falling edge time (Tf) of the gate drive signal in the prior art. The problem of short pixel effective charging time (Teff)

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