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:
Jul. 29, 2008
Filed:
Oct. 25, 2001
Arata Kinjo, Tachikawa, JP;
Kazuo Ookado, Kokubunji, JP;
Kouichi Kotera, Kokubunji, JP;
Hitoshi Oda, Kokubunji, JP;
Masuhiro Endo, Kunitachi, JP;
Arata Kinjo, Tachikawa, JP;
Kazuo Ookado, Kokubunji, JP;
Kouichi Kotera, Kokubunji, JP;
Hitoshi Oda, Kokubunji, JP;
Masuhiro Endo, Kunitachi, JP;
Renesas Technology Corp., Tokyo, JP;
Hitachi ULSI Systems Co., Ltd., Tokyo, JP;
Abstract
A liquid crystal drive device having a differential-type input circuit including a differential amplification stage for receiving a differential signal and a buffer stage for generating an output signal on the basis of an output of the differential amplification stage, the liquid crystal drive device for receiving a signal of display data via the input circuit and outputting a signal for driving a liquid crystal panel on the basis of the display data, wherein a liquid crystal driving voltage VLCD larger than a power supply voltage VCC for logic to be supplied to the operation voltage buffer stage is supplied to the differential amplification stage of the input circuit. A standby function of interrupting an operation current of the differential amplification stage in a period where no display data is received is provided.