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. 27, 2014
Filed:
Dec. 18, 2009
Applicants:
David Erie, Cottage Grove, MN (US);
Noel Hoilien, Minneapolis, MN (US);
Steven Kosier, Lakeville, MN (US);
Inventors:
David Erie, Cottage Grove, MN (US);
Noel Hoilien, Minneapolis, MN (US);
Steven Kosier, Lakeville, MN (US);
Assignee:
Allegro Microsystems, LLC, Worcester, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
A Hall effect transducer in a semiconductor wafer comprises a first layer of semiconducting material, a second layer of semiconducting material, and a contact structure configured to provide a path for electrical current to pass through the second layer. The second layer has higher electron hole mobility than the first layer, and is epitaxially grown atop the first layer.