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

Abstract

The invention provides a shifting register unit, a grid drive circuit and a driving method and a display device, relates to the technical field of display, and can solve the problem that dark lines appear on a display screen as a threshold voltage drifts. The shifting register unit comprises a first input circuit, a second input circuit, an output circuit and a pull-up node reset circuit, wherein the first input circuit is used for outputting a voltage of a first voltage end to a pull-up node under control of a first signal terminal; the second input circuit is used for outputting a voltage of a second voltage end to the pull-up node under control of a second signal terminal; the output circuit is used for outputting a voltage of a clock signal terminal to the signal output end under control of the pull-up node; and the pull-up node reset circuit is used for outputting a voltage of a third voltage end to the pull-up node under control of a third signal terminal.

Description

technical field [0001] The present invention relates to the field of display technology, in particular to a shift register unit, a gate driving circuit and a driving method thereof, and a display device. Background technique [0002] In recent years, the development of displays has shown a trend of high integration and low cost. One of the very important technologies is the mass production of GOA (Gate Driver on Array, integrated gate drive circuit) technology. The GOA technology is used to integrate the gate drive circuit on the array substrate of the display panel, so that the part of the gate drive integrated circuit can be saved, so as to reduce the product cost in terms of material cost and manufacturing process. The gate switch circuit integrated on the array substrate using the GOA technology is also called a GOA circuit or a shift register circuit, and each shift register in the gate switch circuit is also called a GOA unit. The pull-up and pull-down control struct...

AI Technical Summary

Problems solved by technology

When scanning in the reverse direction, the last level of GOA units is used as the first level. Due to the severe threshold voltage drift, the output voltage of the GOA units in this row will be lower than the voltage of the normal gate drive signal, so a row will appear on the display. Due to the dark lines formed by the dim display brightness, the end user will see multiple dark lines on the display, affecting the display effect

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