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:
Jun. 22, 1999
Filed:
Jul. 24, 1997
Atsushi Matsuzono, Kanagawa, JP;
Satoshi Sasaki, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A magneto-resistance effect device having improved sensitivity in which an effective anisotropic magnetic field operating on a magneto-resistance effect layer is not increased by the sense current magnetic field. The device includes a magnetic field detection unit having a magneto-resistance effect film exhibiting a magneto-resistance effect. The magnetic field detection unit is fed with a sense current in a direction substantially parallel to an external magnetic field. The device also includes an anti-ferromagnetic film arranged neighboring to the magneto-resistance effect film of the magnetic field detection unit. The direction of a magnetic field emanating from the anti-ferromagnetic film is substantially anti-parallel to the direction of a sense current magnetic field generated by the sense current and impressed on the magneto-resistance effect film of the magnetic field detection unit.