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. 30, 2024
Filed:
Jul. 09, 2019
Sae Magnetics (H.k.) Ltd., Hong Kong, CN;
Headway Technologies, Inc., Milpitas, CA (US);
Takashi Honda, Hong Kong, CN;
Kowang Liu, Milpitas, CA (US);
Kwun Pan Ng, Hong Kong, CN;
Makoto Kawato, Hong Kong, CN;
SAE MAGNETICS (H.K.) LTD., Hong Kong, CN;
HEADWAY TECHNOLOGIES, INC., Milpitas, CA (US);
Abstract
A light source unit for thermally-assisted magnetic head includes a substrate member having a first bonding surface; a light source assembly attached on the first bonding surface of the substrate member and having a second bonding surface; and a heater circuit assembly formed between the substrate member and the light source assembly, the heater circuit assembly having a heater formed on the substrate member and two leads connected at two ends of the heater, the lead being thicker than the heater, thereby a distance between the heater and the second bonding surface is farther than that between the lead and the second bonding surface. The light source unit can reduce mechanical stress and thermal conduction between a light source assembly and a substrate member, thereby improving the performance of the light source assembly and the heater.