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. 09, 2006
Filed:
Mar. 18, 2003
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, 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 desired gray scale voltage levels from a gray scale voltage varying with time in a staircase fashion, in accordance with display data, and supplies the selected gray scale voltage levels to the pixels. The drive circuit includes a stabilizer circuit provided to a gray scale voltage line for supplying the gray scale voltage varying with time.