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:
Jun. 22, 2010
Filed:
Feb. 12, 2007
Tsung Yuan Chen, San Jose, CA (US);
David Patrick Druist, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Kim Y. Lee, Fremont, CA (US);
Chun-ming Wang, Fremont, CA (US);
Howard Gordon Zolla, San Jose, CA (US);
Tsung Yuan Chen, San Jose, CA (US);
David Patrick Druist, San Jose, CA (US);
Quang Le, San Jose, CA (US);
Kim Y. Lee, Fremont, CA (US);
Chun-Ming Wang, Fremont, CA (US);
Howard Gordon Zolla, San Jose, CA (US);
Hitachi Global Storage Technologies Netherlands B.V., Amsterdam, NL;
Abstract
A method for fabricating a magnetic head with a trapezoidal shaped pole piece tip is described. The body of the main pole piece is deposited; then one or more layers for the pole piece tip are deposited. A bed material is deposited over the pole piece tip material. A void is formed in the bed material over the area for the pole piece tip. The void is filled with an ion-milling resistant material such as alumina preferably using atomic layer deposition or atomic layer chemical vapor deposition. The excess ion-milling resistant material and the bed material are removed. The result is an ion-milling mask formed over the area for the pole piece tip. Ion milling is then used to remove the unmasked material in the pole piece tip layer and to form a beveled pole piece tip and preferably a beveled face on the main pole piece.