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:
Feb. 17, 2009
Filed:
Mar. 22, 2006
Applicants:
Hironobu Isami, Chiba, JP;
Iwao Takemoto, Mobara, JP;
Katsumi Matsumoto, Mobara, JP;
Inventors:
Assignees:
Hitachi, Ltd., Tokyo, JP;
Hitachi Device Engineering Co., Ltd., Mobara-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G09G 3/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid crystal display device has a liquid crystal display panel and a drive circuit for supplying gray scale voltages to pixels in the liquid crystal display panel. The drive circuit selects intended gray scale voltage levels from a gray scale voltage varying with time periodically by determining a timing corresponding to the intended voltage level of the gray scale voltage based upon a display data signal and time control signals supplied to the drive circuit. A stabilizer circuit is provided to a gray scale voltage line for supplying the gray scale voltage.