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:
Mar. 13, 2018
Filed:
Jan. 28, 2016
Wuhan China Star Optoelectronics Technology Co., Ltd., Wuhan, CN;
Yafeng Li, Wuhan, CN;
Jinfang Wu, Wuhan, CN;
WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Wuhan, Hubei, CN;
Abstract
The invention provides a GOA circuit for LTPS-TFT, by adding the twelfth and thirteenth TFTs (T, T) controlled by output ends (G(n−1), G(n+1)) of (n−1)-th and (n+1)-th GOA units, the drain of twelfth TFT Tconnected through the fourth node (W()) to source of first TFT (T), the drain of first TFT (T) connected to output end of (n−1)-th GOA unit, the drain of thirteenth TFT (T) connected through the fifth node W() to source of third TFT (T), the drain of third TFT (T) connected to output end of (n+1)-th GOA unit; the first and third TFTs (T, T) controlled respectively by the forward and backward scan DC control signals (UD, DU) to reduce leakage of twelfth TFT (T) in forward scanning and leakage of thirteenth TFT (T) in backward scanning. As such, the leakage in key TFTs is reduced and GOA circuit stability is improved.