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:
Apr. 20, 1999
Filed:
Dec. 22, 1995
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A magnetoresistance effect head comprises a magnetoresistance effect element portion including a magnetoresistance effect film having a magnetic field response portion, a magnetic field providing film for providing the magnetoresistance effect film with a bias magnetic field, and a conductor film for supplying a current to the magnetoresistance effect film, wherein the magnetoresistance effect element portion has a laminate structure portion being composed of at least the conductor film, the magnetic field providing film, and the magnetoresistance effect film layered in this order at other than the magnetic field response portion. The magnetoresistance effect head is obtained by patterning a laminate film composed of a conductor film and a magnetic field providing film corresponding to a lead shape, forming an MR film, and patterning the MR film corresponding to a lead shape and the shape of a magnetic field response portion. Alternatively, a magnetic field providing film and a conductor film are layered in the order in a passive region other than the magnetic field response portion, forming a laminate film such that the magnetic field providing film is exposed at surface of the edge portion on the magnetic field response portion side. The MR film is formed on almost only the magnetic field response portion so that the MR film overlaps with the exposed portion of the magnetic field providing film.