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. 04, 2025
Filed:
Mar. 28, 2024
Seiko Epson Corporation, Tokyo, JP;
Haruki Kamikura, Chino, JP;
Kinya Matsuda, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
An integrated circuit device includes: a semiconductor substrate set at a substrate potential; a rectifier circuit that rectifies an AC voltage by a rectifier element provided at the semiconductor substrate and outputs a rectified voltage; and a BGR circuit provided at the semiconductor substrate and generates a reference voltage based on the rectified voltage. The BGR circuit includes an operational amplifier having a first input terminal and a second input terminal, a diode element provided between the first input terminal and a substrate potential node, a resistor and a diode element provided in series between the second input terminal and the substrate potential node, a capacitor provided between the first input terminal and the substrate potential node, and a capacitor provided between the second input terminal and the substrate potential node.