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Title:
SHIFT REGISTER UNIT AND DRIVING METHOD THEREOF, GATE DRIVING CIRCUIT, DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/091168
Kind Code:
A1
Abstract:
A shift register unit, a driving method thereof, a gate driving circuit and a display device. The shift register unit comprises a first input circuit (11), an input control circuit (20), a pull-down control circuit (40), a pull-down circuit (50), an output circuit (30), and a second input circuit (12). The first input circuit (11) comprises a first input sub-circuit (110), and is connected to a pull-up node (PU) via a first terminal of the first input sub-circuit (110) and connected to the input control circuit (20) via a second terminal of the first input sub-circuit (110). The first input circuit (11) is so configured that, under the control of a first signal input terminal (INPUT1), the voltage of a first voltage terminal (VFD) is output to the second terminal of the first input sub-circuit (110) and is output to the pull-up node (PU) via the first terminal of the first input sub-circuit (110). The input control circuit (20) is further connected to a voltage terminal (VGL) of a first power supply and an enabling signal terminal (EN) for pulling down the potential of the second terminal of the first input circuit (110) to the potential of the voltage terminal (VGL) of the first power supply under the control of the enabling signal terminal (EN). This solves the problem in which some transistors in the shift register unit are in a bias state for a long time, resulting in the shift register unit failing to output gate scan signals.

Inventors:
WANG, Zhichong (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
ZHENG, Haoliang (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
HAN, Seungwoo (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
SHANG, Guangliang (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
YUAN, Lijun (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
YAO, Xing (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
HAN, Mingfu (No. 9, Dize Road BDA, Beijing 6, 100176, CN)
Application Number:
CN2018/100328
Publication Date:
May 16, 2019
Filing Date:
August 14, 2018
Export Citation:
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Assignee:
BOE TECHNOLOGY GROUP CO., LTD. (No. 10 Jiuxianqiao Rd, Chaoyang District, Beijing 5, 100015, CN)
International Classes:
G11C19/28
Foreign References:
CN107845403A2018-03-27
CN106128347A2016-11-16
CN107068088A2017-08-18
CN104464628A2015-03-25
CN105096904A2015-11-25
US20140253424A12014-09-11
US20090121766A12009-05-14
Attorney, Agent or Firm:
CHINA PATENT AGENT (H.K.) LTD. (22/F, Great Eagle Centre23 Harbour Road, Wanchai, Hong Kong, Kong, CN)
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