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:
Feb. 16, 2010
Filed:
Dec. 07, 2005
James Mac Freitag, Sunnyvale, CA (US);
Kuok San Ho, Santa Clara, CA (US);
Mustafa Michael Pinarbasi, Morgan Hill, CA (US);
Ching Hwa Tsang, Sunnyvale, CA (US);
James Mac Freitag, Sunnyvale, CA (US);
Kuok San Ho, Santa Clara, CA (US);
Mustafa Michael Pinarbasi, Morgan Hill, CA (US);
Ching Hwa Tsang, Sunnyvale, CA (US);
Hitachi Global Storage Technologies Netherlands B. V., Amsterdam, NL;
Abstract
A magnetoresistive sensor having a lead overlay defined trackwidth and a pinned layer that extends beyond the stripe height defined by the free layer of the sensor. The extended pinned layer has a strong shape induced anisotropy that maintains pinning of the pinned layer moment. The extended portion of the pinned layer has sides beyond the stripe height that are perfectly aligned with the sides of the sensor within the stripe height. This perfect alignment is made possible by a manufacturing method that uses a mask structure for more than one manufacturing phase, eliminating the need for multiple mask alignments. The lead overlay design allows narrow, accurate trackwidth definition.