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:
Aug. 30, 2016
Filed:
Jun. 29, 2015
Western Digital (Fremont), Llc, Fremont, CA (US);
Jinqiu Zhang, Fremont, CA (US);
Xiaoyu Yang, Union City, CA (US);
Feng Liu, San Ramon, CA (US);
Xiaojun Zhang, Fremont, CA (US);
Krishna Chetry, Fremont, CA (US);
Masahiro Osugi, Fremont, CA (US);
Ning Wu, Fremont, CA (US);
WESTERN DIGITAL (FREMONT), LLC, Fremont, CA (US);
Abstract
A method provides a magnetic device having an air-bearing surface (ABS) location. A layer including first and second sublayers is provided. The first sublayer includes the ABS location. The second sublayer recessed from the ABS location such that part of the first sublayer is between the second sublayer and the ABS location. The first sublayer has a rear surface oriented at a nonzero, acute angle from a surface perpendicular to the ABS location. A trench is formed in the layer. The trench has a bottom, a top and sidewalls. The sidewalls form a first angle with a direction perpendicular to the bottom at the ABS location. The sidewalls form a second angle with the direction in part of the second sublayer. The second angle is smaller than the first angle. The sidewall angle varies along the rear surface of the first sublayer. A main pole is provided in the trench.