The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 2020
Filed:
Dec. 15, 2017
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, CN;
Xiaowen Lv, Shenzhen, CN;
Yifang Chou, Shenzhen, CN;
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, Guangdong, CN;
Abstract
The invention provides a GOA circuit, other than the first to the fourth GOA units, in each GOA unit: the first pull-down maintenance module receives the first control signal, low voltage signal, scan signal and circuit start signal, and is connected to the first node, wherein the 52TFT of the first pull-down maintenance module has a gate connected to the first node, a source receives the circuit start signal, and a drain connected to the gates of the 31TFT and 41TFT so that when the first node is at high voltage, the gate-source voltage difference of the 31TFT and the 41TFT are both negative to effectively reduce the current leakage and prevent the current leakage from affecting the voltage of the first node, to improve the circuit stability without additional signal lines, able to facilitate production cost reduction and achieving narrow border design.