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. 01, 2015
Filed:
May. 15, 2014
Applicant:
Alps Green Devices Co., Ltd., Tokyo, JP;
Inventor:
Shinji Mitsuya, Miyagi-ken, JP;
Assignee:
ALPS GREEN DEVICES CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/02 (2006.01); G01R 33/09 (2006.01); G01R 15/20 (2006.01); G01R 19/00 (2006.01); H01L 43/08 (2006.01);
U.S. Cl.
CPC ...
G01R 33/093 (2013.01); G01R 15/205 (2013.01); G01R 19/0046 (2013.01); G01R 33/09 (2013.01); H01L 43/08 (2013.01); H01L 2924/30107 (2013.01);
Abstract
A current sensor includes a first magnetic sensor and a second magnetic sensor which are configured to detect an induced magnetic field from target current to be measured flowing through a current line. The first and second magnetic sensors each include a magnetoresistive element that includes a free magnetic layer and a hard bias layer applying a bias magnetic field to the free magnetic layer. The bias magnetic field in the magnetoresistive element of the first magnetic sensor is oriented opposite to the bias magnetic field in the magnetoresistive element of the second magnetic sensor.