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:
May. 11, 1999
Filed:
Oct. 17, 1996
Applicant:
Inventors:
Sywe N Lee, Hsinchu, TW;
David A Wayne, Phoenix, AZ (US);
Huann-Min Tang, Hsinchu, TW;
Fang-Chien Kuo, Hsinchu, TW;
Assignee:
Prime View International Co., Hsinchiu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
345100 ; 345 99 ; 345103 ; 345204 ;
Abstract
The number of external column driver chip can be reduced to one in an active matrix liquid crystal display with column input multiplexing driving scheme. At least two sample and hold circuits are used for each column with alternate sampling and holding periods. Video signals are sampled and held at least twice during one line scanning time. These sample and hold circuits are all integrated in the driver chip.