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. 22, 2012
Filed:
Apr. 10, 2007
Applicants:
Nubuo Yoshida, Kanagawa-ken, JP;
Katsuro Watanabe, Ibaragi, JP;
Takayoshi Ohtsu, Kanagawa, JP;
Inventors:
Assignee:
Hitachi Global Storage Technologies Netherlands BV, Amsterdam, NL;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/147 (2006.01); G11B 5/127 (2006.01);
U.S. Cl.
CPC ...
Abstract
Embodiments in accordance with the present invention provide a thin film magnetic head for preventing a short-circuit failure during formation of a track portion or a stripe-height portion and improving a yield. In one embodiment, a stripe-height direction is first formed, and then a track-width direction is formed. A third insulating film having a smoothly shaped wall surface is formed on a first insulating film during stripe-height formation. During formation of the third insulating film, an optimized lift-off pattern is used to smooth an edge shape.