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. 01, 2005
Filed:
Sep. 19, 2000
Lijun Tong, San Jose, CA (US);
Kevin Lin, San Ramon, CA (US);
Joyce Hsiang, San Ramon, CA (US);
Yirong HU, Sunnyvale, CA (US);
Lijun Tong, San Jose, CA (US);
Kevin Lin, San Ramon, CA (US);
Joyce Hsiang, San Ramon, CA (US);
Yirong Hu, Sunnyvale, CA (US);
Western Digital (Fremont), Inc., Lake Forest, CA (US);
Abstract
The present invention provides a magnetic write element for use in a magnetic data recording system such as a disk drive. The invention provides a method of manufacturing a well defined coil, which avoids the problem of shallow wall angle problems exhibited by prior art methods due to coil mask shrinkage during high temperature bake. A series of trenches are provided in the coil mask, the trenches being shallower than the coil pattern, and not extending completely through the coil pattern. During the high temperature baking process shrinkage of the coil mask will be absorbed by the trenches and not transferred to the coil pattern, preventing deformation of the coil wall portion of the mask.