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:
Dec. 28, 2010
Filed:
Jan. 11, 2007
Tetsuro Oomori, Osaka, JP;
Hisao Kunitani, Kyoto, JP;
Hiroshi Kojima, Kyoto, JP;
Makoto Mizuki, Kyoto, JP;
Noriko Kaku, Kyoto, JP;
Tetsuro Oomori, Osaka, JP;
Hisao Kunitani, Kyoto, JP;
Hiroshi Kojima, Kyoto, JP;
Makoto Mizuki, Kyoto, JP;
Noriko Kaku, Kyoto, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The current drive device of the present invention includes: a current source transistor for allowing a preset drive current to flow to a drain; a cascode transistor cascode-connected to the current source transistor; a switch circuit for switching ON/OFF flow of the drive current through the drain of the cascode transistor and a circuit to be driven; and a bypass circuit for allowing the drive current to flow therethrough to bypass the switch circuit and the circuit to be driven when the switch circuit is OFF.