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:
Nov. 05, 2013
Filed:
Feb. 19, 2010
Hiroko Sehata, Oamishirasato, JP;
Kouichi Kotera, Kokubunji, JP;
Yoshihiro Kotani, Chiba, JP;
Shuuichirou Matsumoto, Mobara, JP;
Hiroko Sehata, Oamishirasato, JP;
Kouichi Kotera, Kokubunji, JP;
Yoshihiro Kotani, Chiba, JP;
Shuuichirou Matsumoto, Mobara, JP;
Hitachi Displays, Ltd., Chiba, JP;
Panasonic Liquid Crystal Display Co., Ltd., Hyogo-ken, JP;
Abstract
A circuit that obtains a more accurate, output voltage from a plurality of input voltages is provided. A two-input single-output circuit includes a current source transistor allowing a predetermined current to flow, a cascode transistor section including two MOS transistors that are cascode-connected to the drain side of the current source transistor and have the same characteristics, a differential pair section having a first differential pair formed of a first input-side transistor and a first output-side transistor whose source lines are shared and a second differential pair formed of a second input-side transistor and a second output-side transistor whose source lines are shared, and a current mirror circuit section. Drain lines of the transistors of the cascade transistor section are respectively connected to the source lines of the first and second differential pairs.