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:
Dec. 17, 2013
Filed:
Dec. 01, 2011
Wei Gao, Fremont, CA (US);
Guanxiong LI, Fremont, CA (US);
Ming Mao, Dublin, CA (US);
Chih-ching HU, Pleasanton, CA (US);
Guanghong Luo, Fremont, CA (US);
Miao Wang, San Jose, CA (US);
Zhihong Zhang, Fremont, CA (US);
Anup G. Roy, Fremont, CA (US);
Wei Gao, Fremont, CA (US);
Guanxiong Li, Fremont, CA (US);
Ming Mao, Dublin, CA (US);
Chih-Ching Hu, Pleasanton, CA (US);
Guanghong Luo, Fremont, CA (US);
Miao Wang, San Jose, CA (US);
Zhihong Zhang, Fremont, CA (US);
Anup G. Roy, Fremont, CA (US);
Western Digital (Fremont), LLC, Fremont, CA (US);
Abstract
A read sensor for a transducer is fabricated. The transducer has a field region and a sensor region corresponding to the sensor. A sensor stack is deposited. A hybrid mask including hard and field masks is provided. The hard mask includes a sensor portion covering the sensor region and a field portion covering the field region. The field mask covers the field portion of the hard mask. The field mask exposes the sensor portion of the hard mask and part of the sensor stack between the sensor and field regions. The sensor is defined from the sensor stack in a track width direction. Hard bias layer(s) are deposited. Part of the hard bias layer(s) resides on the field mask. Part of the hard bias layer(s) adjoining the sensor region is sealed. The field mask is lifted off. The transducer is planarized.