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:
Nov. 02, 2010
Filed:
Aug. 05, 2009
Ping-hsien Chen, Pingtung County, TW;
Bi-hsien Chen, Taipei County, TW;
Ping-Hsien Chen, Pingtung County, TW;
Bi-Hsien Chen, Taipei County, TW;
Chunghwa Picture Tubes, Ltd., Bade, Taoyuan, TW;
Abstract
A level regulation circuit of a common signal of an LCD generates a first level voltage and a second level voltage according to a common voltage so as to generate a first common signal and a second common signal. Each pixel of the LCD includes two storage capacitors receiving the first common signal and the second common signal respectively. The level regulation circuit of the common signal uses an operational amplifier and one or two Zener diodes to generate the first level voltage and the second level voltage. The first level voltage and the second level voltage have the same voltage difference to the common voltage, so the flicker of the LCD can be reduced.