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:
Sep. 15, 2020
Filed:
Feb. 21, 2018
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Rémy Lassalle-Balier, Bures sur Yvette, FR;
Damien Dehu, La-Ville-du-Bois, FR;
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 10/32 (2006.01); G01R 33/09 (2006.01); H01F 10/12 (2006.01);
U.S. Cl.
CPC ...
H01F 10/3268 (2013.01); G01R 33/093 (2013.01); H01F 10/3263 (2013.01); H01F 10/123 (2013.01); H01F 10/3272 (2013.01);
Abstract
A magnetoresistance element (e.g. a spin valve) for detecting a changing magnetic field includes a pinning layer, pinned layer adjacent to the pinning layer, a spacer layer adjacent to the pinned layer, and a free layer adjacent to the spacer layer and arranged so that the spacer layer is between the pinned layer and the free layer. The pinned layer has a bias with a bias direction configured to reduce an effect of a static field on the detection of the changing magnetic field.