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:
Aug. 11, 2009
Filed:
Mar. 01, 2002
Reduction of interference pickup in heads for magnetic recording by minimizing parasitic capacitance
Vladimir Nikitin, Campbell, CA (US);
Michael Paul Salo, San Jose, CA (US);
Samuel W. Yuan, Saratoga, CA (US);
Robert Langland Smith, Sunnyvale, CA (US);
Mark Allen Burleson, Gilroy, CA (US);
Vladimir Nikitin, Campbell, CA (US);
Michael Paul Salo, San Jose, CA (US);
Samuel W. Yuan, Saratoga, CA (US);
Robert Langland Smith, Sunnyvale, CA (US);
Mark Allen Burleson, Gilroy, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Disclosed is a system and a method for reducing high frequency interference pickup by the read element of the magneto-recording head. The reduction is achieved by reducing the parisitic capacitance between certain elements of the magnetic head. In one embodiment, the areas of the pads and leads, including the areas of the leads over the S1 and the areas of the sensor leads, are reduced. A second implementation involves increasing the separation between the pads and leads and the substrate material. Copper studs or vias may be used to connect the contact pads and the underlying layers. A third implementation includes using a low dielectric constant material as a spacer layer between conductors (leads, pads, magnetic shields) and the substrate.