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. 09, 2008
Filed:
May. 05, 2006
Huey-ming Tzeng, San Jose, CA (US);
Xiao Z. Wu, San Jose, CA (US);
Huey-Ming Tzeng, San Jose, CA (US);
Xiao Z. Wu, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method of fabrication of a magnetic head including a read head sensor includes providing a read sensor stack having a front edge, a rear edge, a right side edge and a left side edge, and at least one pinning layer. The left side edge, right side edge, front edge and rear edge of the sensor stack are milled. The read sensor stack is annealed in a magnetic field to set the final orientation of the pinning layer, and the read sensor stack is encapsulated in overcoat material having a front surface. A projected final ABS boundary is established which lies within the overcoat material. A trim range is established relative to the projected final ABS boundary. The front surface of the overcoat material is lapped until the overcoat front surface is within the trim range. Residual overcoat material is then removed by ion beam etching.