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:
Feb. 10, 2009
Filed:
Feb. 28, 2005
Kentaro Nagai, Atsugi, JP;
Takeo Kagami, Tokyo, JP;
Noriaki Kasahara, Tokyo, JP;
Naoki Ohta, Tokyo, JP;
Satoshi Miura, Tokyo, JP;
Kentaro Nagai, Atsugi, JP;
Takeo Kagami, Tokyo, JP;
Noriaki Kasahara, Tokyo, JP;
Naoki Ohta, Tokyo, JP;
Satoshi Miura, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A magnetic head is provided for further improving a correlation between the dynamic characteristics and static characteristics. A lower magnetic shield layer, a magneto-resistive layer, and an upper magnetic shield layer are laminated on a base in this order. A lower lead layer and an upper lead layer apply a sense current to the magneto-resistive layer in a direction substantially perpendicular to the film plane thereof through the magnetic shield layers. The lower magnetic shield layer and upper magnetic shield layer have their shapes and sizes which substantially exactly overlap each other, when viewed in a laminating direction. The lower lead layer is electrically connected to the lower magnetic shield layer. At least a portion of the lower lead layer closer to the lower magnetic shield layer is made of a non-magnetic conductive material. The upper lead layer is electrically connected to the upper magnetic shield layer. At least a portion of the upper lead layer closer to the upper magnetic shield layer is made of a non-magnetic conductive material.