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. 16, 2007
Filed:
Sep. 03, 2004
Hironobu Isami, Chiba, JP;
Iwao Takemoto, Mobara, JP;
Toshio Miyazawa, Chiba, JP;
Katsumi Matsumoto, Mobara, JP;
Hironobu Isami, Chiba, JP;
Iwao Takemoto, Mobara, JP;
Toshio Miyazawa, Chiba, JP;
Katsumi Matsumoto, Mobara, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Device Engineering Co., Ltd., Mobara, JP;
Abstract
A liquid crystal display device having a plurality of pixels arranged in a matrix, a plurality of video signal lines for supplying video signal voltages to the plurality of pixels, and a drive circuit which selects a voltage level of a gray scale voltage varying periodically as one of the video signal voltages corresponding to display data to be supplied to one of the plurality of pixels. The drive circuit has a plurality of series combinations of plural processing circuits, wherein each of the plurality of series combinations of plural processing circuits corresponds to one of the plurality of video signal lines, and each of the plural processing circuits comprises a parallel combination of a first switching element and a second switching element. The first and second switching elements are made operative or inoperative as a switch in accordance with different conditions.