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. 15, 2020
Filed:
Feb. 14, 2020
Western Digital Technologies, Inc., San Jose, CA (US);
Xiaoyong Liu, San Jose, CA (US);
Chih-Ching Hu, Pleasanton, CA (US);
Daniele Mauri, San Jose, CA (US);
Ming Mao, Dublin, CA (US);
Guanxiong Li, Fremont, CA (US);
Yukimasa Okada, Cupertino, CA (US);
Ying Hong, Los Gatos, CA (US);
WESTERN DIGITAL TECHNOLOGIES, INC., , CA (US);
Abstract
A hybrid read head structure for two-dimensional magnetic recording (TDMR) in a disk drive has two stacked current-perpendicular-to-the plane magnetoresistive (CPP-MR) read heads or sensors substantially aligned with one another in the along-the track direction to enable both sensors to read data from the same data track. The structure is a hybrid structure formed on the disk drive slider with the lower sensor being a dual free layer (DFL) or scissoring type of CPP-MR sensor and the upper sensor being a single free layer (SFL) type of CPP-MR sensor.