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:
Jan. 27, 2015
Filed:
Jun. 10, 2014
Western Digital Technologies, Inc., Irvine, CA (US);
Tzong-Shii Pan, San Jose, CA (US);
Cliff Zhang, San Jose, CA (US);
Western Digital Technologies, Inc., Irvine, CA (US);
Abstract
A head stack assembly (HSA) for a disk drive includes an actuator body, at least one actuator arm extending from the actuator body, and a flexible printed circuit (FPC). The FPC may include a FPC conductive layer having a plurality of FPC traces that terminate at respective ones of a plurality of electrically conductive FPC bond pads. The FPC may include a metallic FPC stiffener layer having a surface that underlies and faces the FPC bond pads. The FPC stiffener layer surface may include a plurality of recessions having a depth of at least 25 microns. A FPC dielectric layer may be disposed between the FPC conductive layer and the metallic FPC stiffener layer. One or more of the plurality of FPC bond pads may be internally patterned to define a FPC bond pad mesh with a plurality of openings therethrough.