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:
Dec. 23, 2014
Filed:
Dec. 17, 2012
Western Digital (Fremont), Llc, Fremont, CA (US);
Xiaotian Zhou, Fremont, CA (US);
Hongzhou Jiang, Fremont, CA (US);
Donghong Li, Pleasanton, CA (US);
Lien-Chang Wang, Fremont, CA (US);
Ching-Huang Lu, Fremont, CA (US);
Wencheng Su, Cupertino, CA (US);
Lieping Zhong, San Jose, CA (US);
Tao Pan, San Jose, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A method fabricates a magnetic transducer. A sacrificial leading shield is provided on an etch stop layer. A nonmagnetic layer is provided on the sacrificial leading shield. A pole trench is formed in the nonmagnetic layer and on the sacrificial leading shield. A pole is formed. The pole has a bottom and a top wider than the bottom in a pole tip region. Part of the pole in the pole tip region is in the pole trench and at the ABS location. The sacrificial leading shield and part of the nonmagnetic layer adjacent to the pole are removed. An air bridge thus resides in place of the sacrificial leading shield between the portion of the pole and the etch stop layer. As least one shield layer is provided. The at least one shield layer substantially fills the air bridge and form a monolithic shield including a leading and side shields.