Invention Grant
- Patent Title: Self-compensating gate driving circuit
- Patent Title (中): 自补偿门驱动电路
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Application No.: US14398733Application Date: 2014-08-14
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Publication No.: US09589520B2Publication Date: 2017-03-07
- Inventor: Chao Dai
- Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Applicant Address: CN Shenzhen, Guangdong
- Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
- Current Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
- Current Assignee Address: CN Shenzhen, Guangdong
- Agent Andrew C. Cheng
- Priority: CN201410342374 20140717
- International Application: PCT/CN2014/084342 WO 20140814
- International Announcement: WO2016/008191 WO 20160121
- Main IPC: G09G3/36
- IPC: G09G3/36 ; G02F1/1362

Abstract:
The present invention provides a self-compensating gate driving circuit, comprising: a plurality of GOA units which are cascade connected, and a Nth GOA unit controls charge to a Nth horizontal scanning line G(n) in a display area, and the Nth GOA unit controls charge to a Nth horizontal scanning line G(n) in a display area, and the Nth GOA unit comprises a pull-up controlling part, a pull-up part, a transmission part, a first pull-down part, a bootstrap capacitor part and a pull-down holding part; the pull-up part, the first pull-down part, the bootstrap capacitor part and the pull-down holding circuit are respectively coupled to a Nth gate signal point Q(N) and the Nth horizontal scanning line G(n), and the pull-up controlling part and the transmission part are respectively coupled to the Nth gate signal point Q(N), and the pull-down holding part is inputted with a first DC low voltage VSS1. The present invention is designed to have the pull-down holding part with self-compensating function to promote the reliability of the long term operation for the gate driving circuit. The influence of the threshold voltage drift to the operation of the gate driving circuit is diminished; the pull-down holding part can be designed to be controlled by a set of DC signal source. The design space of the circuit patterns can be saved and the overall power consumption of the circuit can be decreased.
Public/Granted literature
- US20160284293A1 SELF-COMPENSATING GATE DRIVING CIRCUIT Public/Granted day:2016-09-29
Information query
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