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:
Jul. 08, 2025
Filed:
Jan. 30, 2023
Applicant:
Allegro Microsystems, Llc, Manchester, NH (US);
Inventors:
Samridh Jaiswal, London, GB;
Paolo Campiglio, Arcueil, FR;
Ronald Lehndorff, Mainz, DE;
Yen Ting Liu, Hsinchu, TW;
Assignee:
Allegro MicroSystems, LLC, Manchester, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R 33/09 (2006.01); G01B 7/30 (2006.01); G01R 33/00 (2006.01);
U.S. Cl.
CPC ...
G01R 33/091 (2013.01); G01B 7/30 (2013.01); G01R 33/093 (2013.01); G01R 33/096 (2013.01); G01R 33/098 (2013.01); G01R 33/0052 (2013.01);
Abstract
In one aspect, a method includes manufacturing a magnetic-field angle sensor on a wafer. The manufacturing includes forming a cosine bridge that includes forming a first magnetoresistance (MR) element. The manufacturing also includes forming a sine bridge that includes forming a second MR element. Forming the first MR element includes using a process to reduce orthogonality errors between the sine bridge and the cosine bridge caused by anisotropy present in magnetic material in the first MR element.