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:
Jul. 01, 2014
Filed:
Jun. 11, 2010
Chiuming Leung, Hong Kong, CN;
Kosuke Tanaka, Tokyo, JP;
Kazuki Sato, Tokyo, JP;
Cheukwing Leung, Hong Kong, CN;
Juren Ding, Hong Kong, CN;
Rongkwang NI, Hong Kong, CN;
Wanyin Kwan, Hong Kong, CN;
Mankit Lee, Hong Kong, CN;
Chiuming Leung, Hong Kong, CN;
Kosuke Tanaka, Tokyo, JP;
Kazuki Sato, Tokyo, JP;
Cheukwing Leung, Hong Kong, CN;
Juren Ding, Hong Kong, CN;
Rongkwang Ni, Hong Kong, CN;
Wanyin Kwan, Hong Kong, CN;
Mankit Lee, Hong Kong, CN;
SAE Magnetics (H.K.) Ltd., Hong Kong, CN;
TDK Corporation, Tokyo, JP;
Abstract
An MR sensor includes a first shielding layer, a second shielding layer, an MR element formed therebetween, and a pair of hard magnet layers respectively placed on two sides of the MR element. The MR element includes an AFM layer formed on the first shielding layer, a pinned layer formed on the AFM layer and a free layer formed between the pinned layer and the second shielding layer. The free layer is funnel-shaped, which has a first edge facing an air bearing surface and a second edge opposite the first edge, and the first edge has a narrower width than that of the second edge. The MR sensor can improve MR height control performance, and improve the ESD performance and decrease the PCN and RTN and, in turn, get a more stable performance. The present invention also discloses a magnetic head, an HGA and a disk drive unit.