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. 17, 2020
Filed:
Jul. 26, 2016
Allegro Microsystems, Llc, Manchester, NH (US);
Harianto Wong, Southborough, MA (US);
William P. Taylor, Amherst, NH (US);
Allegro MicroSystems, LLC, Manchester, NH (US);
Abstract
The present disclosure is directed towards a method for patterning a magnetic sensing layer. The method includes disposing a protective layer on a first of a substrate, disposing a first insulating layer on a first surface of protective layer. An opening is formed in the first insulating layer to expose the first surface of the protective layer. A magnetic sensing layer is disposed over the first insulating layer and a predetermined portion of the first surface of the protective layer within the opening. A second insulating layer can be disposed over the magnetic sensing layer. The second insulation layer and the magnetic sensing layer can be removed from the first insulation layer. Thus, the opening includes the magnetic sensing layer and the second insulation layer after the removal of the second insulation layer and magnetic sensing layer from the first insulation layer.