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:
Mar. 15, 2022
Filed:
Jun. 25, 2020
Western Digital Technologies, Inc., San Jose, CA (US);
Xiaoyong Liu, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Zhigang Bai, Fremont, CA (US);
Daniele Mauri, San Jose, CA (US);
Zhanjie Li, Pleasanton, CA (US);
Kuok San Ho, Emerald Hills, CA (US);
Thao A. Nguyen, San Jose, CA (US);
Rajeev Nagabhirava, Santa Clara, CA (US);
WESTERN DIGITAL TECHNOLOGIES, INC., San Jose, CA (US);
Abstract
The present disclosure generally relates to sensor device, such as a magnetic sensor bridge, that utilizes a dual free layer (DFL) structure. The device includes a plurality of resistors that each includes the same DFL structure. Adjacent the DFL structure is a magnetic structure that can include a permanent magnet, an antiferromagnetic (AFM) layer having a synthetic AFM (SAF) structure thereon, a permanent magnetic having a SAF structure thereon, or an AFM layer having a ferromagnetic layer thereon. The DFL structures are aligned with different layers of the magnetic structures to differentiate the resistors. The different alignment and/or different magnetic structures result in a decrease in production time due to reduced complexity and, thus, reduces costs.