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:
May. 18, 2021
Filed:
Feb. 25, 2020
Headway Technologies, Inc., Milpitas, CA (US);
Weihao Xu, San Jose, CA (US);
Ittetsu Kitajima, Cupertino, CA (US);
Cherng-Chyi Han, San Jose, CA (US);
Xuhui Jin, Sunnyvale, CA (US);
Weisheng Hu, Fremont, CA (US);
Ethan Lo, San Jose, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
An optically shielded (thermally assisted magnetic recording (TAMR) head comprises a perpendicular magnetic recording (PMR) write head and a near-field transducer (NFT) having an emerging peg at the air-bearing surface (ABS). Self-aligned optical side shields (SA-OSS) are formed using a self-aligning process that positions the shields symmetrically relative to the emergent peg of the NFT. As a result of the symmetric positioning the down-track and cross-track near-field and near-field gradients are significantly sharpened.