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:
Mar. 27, 2007
Filed:
Mar. 29, 2001
Yusuke Tsutsui, Hashima, JP;
Makoto Kitagawa, Gifu, JP;
Mitsugu Kobayashi, Nagoya, JP;
Hisao Uehara, Ogaki, JP;
Yusuke Tsutsui, Hashima, JP;
Makoto Kitagawa, Gifu, JP;
Mitsugu Kobayashi, Nagoya, JP;
Hisao Uehara, Ogaki, JP;
Sanyo Electric Co., Ltd., Osaka, JP;
Abstract
A power supply circuit () for a display device such as a liquid crystal outputs a boosted supply voltage VDDduring normal operation, and generates a non-boosted supply voltage VDDhaving a voltage lower than that during the normal display operation by controlling the switches for switching the output within the power supply circuit () during a power save mode. The non-boosted supply voltage is supplied to the analog circuits of a driving circuit () so that the power consumption at the analog circuits is reduced. By controlling the switch for switching the output within the power supply circuit and the supply of the power supply clock, the circuit can be switched, in the power save mode, to either a mode where a lower supply voltage is generated or to a mode where the power supply is turned off.