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1. (WO2017181647) SHIFT REGISTER UNIT, DRIVING METHOD, GATE DRIVE CIRCUIT AND DISPLAY DEVICE

Pub. No.:    WO/2017/181647    International Application No.:    PCT/CN2016/104169
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Wed Nov 02 00:59:59 CET 2016
IPC: G09G 3/36
G11C 19/28
Applicants: BOE TECHNOLOGY GROUP CO., LTD.
京东方科技集团股份有限公司
HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
合肥京东方光电科技有限公司
Inventors: GU, Honggang
古宏刚
SHAO, Xianjie
邵贤杰
WANG, Qianqian
王倩倩
SONG, Jie
宋洁
Title: SHIFT REGISTER UNIT, DRIVING METHOD, GATE DRIVE CIRCUIT AND DISPLAY DEVICE
Abstract:
A shift register unit, driving method, gate drive circuit and display device. The shift register unit comprises: a charging module (10), a reset module (20), a pull-up module (30) a first pull-down module (40), a second pull-down module (50) and a compensation module (60). During a noise reduction phase (T4), the first pull-down module (40), controlled by a pull-down node (PD), by a third power supply signal from a third power supply signal port (VGL) and by a switch mode power supply signal from a switch mode power supply terminal (SW), reduces noise for a pull-up node (PU) and an output terminal (Output), respectively. This decreases noise in the pull-up node (PU) and the output terminal (Output) of a shift register unit, improving output effectiveness of the shift register unit and solving the problem of noise in the driving process of the shift register unit.