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:
Sep. 17, 2024
Filed:
Aug. 30, 2023
Headway Technologies, Inc., Milpitas, CA (US);
Shehrin Sayed, Fremont, CA (US);
Wenyu Chen, San Jose, CA (US);
Yue Liu, Fremont, CA (US);
Kowang Liu, Fremont, CA (US);
Tetsuya Roppongi, San Jose, CA (US);
Haowen Ren, Fremont, CA (US);
Yuhui Tang, Milpitas, CA (US);
Moris Musa Dovek, San Jose, CA (US);
Wenjie Chen, Cupertino, CA (US);
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
The present embodiments can generally provide a magnetic write head structure with optimized gap current distribution to maximize the current-assisted areal density capacity (ADC) gain in hard-disk-drive storage devices. In a first example embodiment, a non-dual-write-shield (nDWS) write head can include a main pole (MP), a trailing shield (TS), and a write gap (WG) disposed between the MP and the TS. The write head can also include a side shield (SS), a leading shield (LS), and a write shield (WS). The write head can include a side gap (SG) between the MP and the SS on both sides of the MP tip, and a leading gap (LG) between the MP and the LS. The write head can also include a coil wrapped around the MP through a PP3 shield that is configured to direct a time-dependent write current to saturate magnetization of the MP.