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. 10, 2018
Filed:
Dec. 01, 2015
Applicant:
Hgst Netherlands B.v., Amsterdam, NL;
Inventors:
Kouichi Nishioka, Hiratsuka, JP;
Zheng Gao, San Jose, CA (US);
Ching Tsang, Sunnyvale, CA (US);
Quang Le, San Jose, CA (US);
Sangmun Oh, San Jose, CA (US);
Assignee:
Western Digital Technologies, Inc., Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 5/39 (2006.01);
U.S. Cl.
CPC ...
G11B 5/3912 (2013.01); G11B 5/3909 (2013.01); G11B 5/3929 (2013.01); G11B 5/3945 (2013.01); G11B 2005/3996 (2013.01);
Abstract
A read head is provided with a scissors sensor. The read head may include a bottom magnetic shield, and a first non-magnetic seed layer, a magnetic seed layer, a second non-magnetic seed layer, an antiferromagnetic layer, a coupling layer, a first free magnetic layer, a spacer layer, and a second free magnetic layer positioned above the bottom magnetic shield, in this order. A pair of magnetic side shield layers may be positioned on respective sides of the second free magnetic layer.