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:
Oct. 01, 2019
Filed:
Nov. 23, 2017
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd., Shenzhen, Guangdong, CN;
Mian Zeng, Guangdong, CN;
Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd, Shenzhen, Guangdong, CN;
Abstract
The present disclosure relates to a scanning-driving circuit and a liquid crystal display (LCD). The scanning-driving circuit includes: a plurality of cascaded-connected gate driver on array (GOA) units. Each of the GOA units includes a pull-up circuit, a controlling circuit, a down-transfer circuit, a pull-down circuit, and a pull-down maintaining unit. The controlling circuit includes a first controlling circuit and a second controlling circuit. When conducting a forward scanning process, the first controlling circuit is configured to turn on the pull-up circuit upon the scanning process has started, and the second controlling circuit is configured to turn off the pull-up circuit upon the scanning process has finished. When conducting a backward scanning process, the second controlling circuit is configured to turn on the pull-up circuit upon the scanning process has started, and the first controlling circuit is configured to turn off the pull-up circuit upon the scanning process has finished.