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:
Sep. 16, 2014
Filed:
Dec. 21, 2012
Hgst Netherlands B.v., Amsterdam, NL;
Yongchul Ahn, San Jose, CA (US);
Xiaozhong Dang, Fremont, CA (US);
Yimin Hsu, Sunnyvale, CA (US);
Quang Le, San Jose, CA (US);
Thomas Leong, San Jose, CA (US);
Simon Liao, Fremont, CA (US);
Guangli Liu, Pleasanton, CA (US);
Aron Pentek, San Jose, CA (US);
HGST Netherlands B.V., Amsterdam, NL;
Abstract
The present invention generally relates to a magnetic sensor in a read head having a hard or soft bias layer that is uniform in thickness within the sensor stack. The method of making such sensor is also disclosed. The free layer stripe height is first defined, followed by defining the track width, and lastly the pinned layer stripe height is defined. The pinned layer and the hard or soft bias layer are defined in the same process step. This approach eliminates a partial hard or soft bias layer and reduces potential instability issues.