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:
Feb. 26, 2013
Filed:
Dec. 15, 2010
Hideaki Hasegawa, Ibaraki, JP;
Kunihiro Harayama, Ibaraki, JP;
Koji Higuchi, Ibaraki, JP;
Atsushi Hirama, Tokyo, JP;
Hideaki Hasegawa, Ibaraki, JP;
Kunihiro Harayama, Ibaraki, JP;
Koji Higuchi, Ibaraki, JP;
Atsushi Hirama, Tokyo, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
A drive circuit for driving a display panel includes a first operation amplifier for operating using a first power source voltage and a second power source voltage; a second operation amplifier for operating using a third power source voltage and a fourth power source voltage; a control unit for supplying a first control voltage and a second control voltage; and a switch circuit for switching the first operation amplifier and the second operation amplifier. The switch circuit includes an n-channel type field effect transistor. The control unit applies the first control voltage to the n-channel type field effect transistor, so that the n-channel type field effect transistor transits from a non-conductive state to a conductive state.