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:
Mar. 13, 2018
Filed:
Feb. 02, 2015
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Isamu Moriya, Chino, JP;
Assignee:
SEIKO EPSON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05F 3/16 (2006.01); H01L 27/092 (2006.01); H01L 29/78 (2006.01); H01L 29/08 (2006.01); H01L 29/10 (2006.01);
U.S. Cl.
CPC ...
G05F 3/16 (2013.01); H01L 27/0922 (2013.01); H01L 29/1087 (2013.01); H01L 29/0878 (2013.01); H01L 29/1083 (2013.01); H01L 29/7816 (2013.01); H01L 29/7835 (2013.01);
Abstract
In order to suppress a negative influence on a circuit operation caused by variation in a substrate potential, a circuit device includes a bridge circuit having a high-side transistor and a low-side transistor, a detection circuit configured to detect current flowing in the bridge circuit, a control circuit configured to control switching on and off of the bridge circuit, and a guard region for setting a substrate PSB of the circuit device to a substrate potential.