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:
Feb. 13, 2018
Filed:
Feb. 14, 2017
Sae Magnetics (H.k.) Ltd., Shatin, N.T., HK;
Headway Technologies, Inc., Milpitas, CA (US);
Guoqiang Zheng, San Ramon, CA (US);
Ellis Cha, San Ramon, CA (US);
Zhijun Liu, Dongguan, CN;
Qinghua Zeng, Fremont, CA (US);
SAE Magnetics H.K. Ltd., Shatin, N.T., HK;
Headway Technologies, Inc., Milpitas, CA (US);
Abstract
A slider design for a hard disk drive (HDD) features an air-bearing surface (ABS) topography with soft bumper pads (SBP) formed proximally to corners of the leading edge and the trailing edge. The bumper pads are formed by a process that combines the use of a first photomask for subtractive etching of the ABS to form pedestals, followed by additive depositions onto the pedestals using a second lift-off photomask. The additive process deposits sequences of Si layers and diamond-like carbon (DLC) layers to produce a soft bumper pad that is energy absorbing and heat conducting, thereby protecting the recording media from surface damage and thermal erasures.