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. 05, 2016
Filed:
May. 16, 2014
Western Digital (Fremont), Llc, Fremont, CA (US);
Jinqiu Zhang, Fremont, CA (US);
Feng Liu, San Ramon, CA (US);
Hongmei Han, Fremont, CA (US);
Ming Sun, Pleasanton, CA (US);
Xiaotian Zhou, Fremont, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A method provides a magnetic transducer having an air-bearing surface (ABS) location. An intermediate layer that includes a first sublayer in a side shield region and a second sublayer outside of the side shield region is provided. A trench is formed in the intermediate layer using multiple etches. A first etch removes part of the second sublayer, providing a first portion of the trench having a first sidewall angle. A second etch removes part of the first sublayer, providing a second portion of the trench having a second sidewall angle. The second sidewall angle is greater than the first sidewall angle. A main pole is provided in the trench and has a plurality of sidewalls. The sidewalls have the second sidewall angle in the second portion of the trench and at least one main pole sidewall angle corresponding to the first sidewall angle in the first portion of the trench.