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:
Jan. 10, 2017
Filed:
Jan. 13, 2015
AU Optronics Corp., Hsin-Chu, TW;
Wei-Chien Liao, Hsin-Chu, TW;
Ming-Hung Chuang, Hsin-Chu, TW;
Cheng-Chiu Pai, Hsin-Chu, TW;
Shu-Wen Tzeng, Hsin-Chu, TW;
AU OPTRONICS CORP., Hsin-Chu, TW;
Abstract
A shift register has a first switch, a pull-up circuit, and a pull-down circuit. The first switch receives a first clock signal. The pull-up circuit is configured to turn on the first switch to pull up a voltage level of an output terminal of the shift register. The pull-up circuit has a second switch and a first control circuit. The first control circuit is coupled to a first system power terminal to avoid an excessive voltage difference between two nodes of the first control circuit. The pull-down circuit is configured to pull down the voltage level of the output terminal of the shift register when the first switch is turned off, and further configured to keep a voltage level of a control node of a switch coupled between the output terminal and a second system power terminal at a low voltage.