Shifting register unit, grid electrode drive circuit and display device

Abstract

The invention provides a shifting register unit, a grid electrode drive circuit and a display device. The shifting register unit comprises an output up-pull transistor, an up-pull node down-pull transistor, an output down-pull transistor, an output transistor, a bootstrap capacitor, an up-pull drive unit, a down-pull drive unit, a first resetting unit and a second resetting unit, wherein the first resetting unit is respectively connected with a first resetting end, an up-pull node, a local-level output end and a low-level output end; the first resetting end is connected with the output end of a next-level shifting register unit; the second resetting unit is respectively connected with a second resetting end, a local-level output end and a low-level output end; and the second resetting end is connected with the output end of a Nth-level shifting register unit after being connected with a previous-level shifting register unit, and the N is an integer which is more than one. At least two resetting units are adopted to inhibit the noise between the first unit time after the current output and the Nth unit time.

Description

technical field [0001] The invention relates to the field of organic light-emitting display, in particular to a shift register unit, a gate drive circuit and a display device. Background technique [0002] The integrated gate shift register integrates the gate pulse output register on the panel, which saves IC and reduces the cost. There are many ways to realize the integrated gate shift register, which can contain different transistors and capacitors. The commonly used structures are 12T1C, 9T1C, 13T1C and so on. The realization of the shift pulse must at least include a set of clock signals, a pull-up transistor, a pull-down transistor and an output transistor. [0003] After the GOA (Gate Driver On Array, array substrate row drive) circuit is used for a period of time, due to the deterioration of the performance of the discharge thin film transistor, the discharge current decreases, and the output noise increases. This noise may be used as the next-level GOA unit circuit...

AI Technical Summary

Problems solved by technology

Especially under high temperature conditions, the noise is bigger, and it is easy to form Multi-output (multi-output) phenomenon

[0004] In the 12T1C structure adopted by the existing integrated gate shift register, it has only one reset unit, which can only suppress the noise output to the next unit time within the current unit time, while other units after the current unit time Within a short period of time, the reset unit cannot perform noise suppression, and the noise that is not effectively suppressed is used as an input and amplified step by step to form multiple outputs

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