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:
May. 11, 2021
Filed:
Jan. 02, 2020
Allegro Microsystems, Llc, Manchester, NH (US);
Yen Ting Liu, Hsinchu, TW;
Maxim Klebanov, Palm Coast, FL (US);
Paolo Campiglio, Arcueil, FR;
Sundar Chetlur, Bedford, NH (US);
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
A magnetoresistance structure includes a base that includes a conductive layer and a first active element on and in direct contact with the conductive layer. The magnetoresistance structure also includes a pillar structure connected to the base. The pillar structure includes a first hard mask, a capping material, a second active element and a tunnel layer. The magnetoresistance structure also further includes an etching barrier deposited on the pillar and the base; a second hard mask deposited on the etching barrier; and a capping barrier deposited on the second hard mask and covering side walls of the base.