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. 10, 2013
Filed:
Nov. 17, 2009
Manabu Nishimizu, Oita, JP;
Atsushi Hirama, Tokyo, JP;
Koji Higuchi, Ibaraki, JP;
Oki Semiconductor Co., Ltd., Tokyo, JP;
Abstract
An operational amplifier includes an output circuit and a differential circuit. The output circuit outputs a voltage in a voltage range determined either from a highest voltage that is an upper limit of a predetermined power source range, or from a lowest voltage that is a lower limit of the predetermined power source range, to an intermediate voltage that is a voltage between the highest voltage and the lowest voltage. The differential circuit includes a first MOS transistor to which a driving signal for driving a display panel is input and a second MOS transistor to which a given input signal is input. The first MOS transistor and the second MOS transistor are connected in parallel, and a differential input-permissible-range of the differential circuit is wider than the voltage range of the output circuit.