| US 7,489,481 B2 | ||
| CCP Head having leads of substantially the same size and shape and not intervening between a shield layer and a MR element | ||
| Kentaro Nagai, Atsugi (Japan); Takeo Kagami, Tokyo (Japan); Noriaki Kasahara, Tokyo (Japan); Naoki Ohta, Tokyo (Japan); and Satoshi Miura, Tokyo (Japan) | ||
| Assigned to TDK Corporation, Tokyo (Japan) | ||
| Filed on Feb. 28, 2005, as Appl. No. 11/67,643. | ||
| Claims priority of application No. 2004-063320 (JP), filed on Mar. 08, 2004. | ||
| Prior Publication US 2005/0201018 A1, Sep. 15, 2005 | ||
| Int. Cl. G11B 5/33 (2006.01); G11B 5/127 (2006.01) | ||
| U.S. Cl. 360—322 | 20 Claims |
| 1. A magnetic head comprising:
a base;
a first magnetic shield layer, a magneto-resistive layer, and a second magnetic shield layer laminated on said base in this
order; and
a first and a second lead layer for applying a sense current to said magneto-resistive layer in a direction substantially
perpendicular to a film plane in said magneto-resistive layer through said first and second magnetic shield layers,
wherein said first and second magnetic shield layers have shapes and sizes which substantially overlap each other when viewed
in a laminating direction,
said first lead layer is electrically connected to said first magnetic shield layer, and at least a first portion of said
first lead layer is made of a non-magnetic conductive material, the first portion of said first lead layer being closer to
said first magnetic shield layer than an other portion of said first lead layer,
said second lead layer is electrically connected to said second magnetic shield layer, and at least a first portion of said
second lead layer is made of a non-magnetic conductive material, the first portion of said second lead layer being closer
to said second magnetic shield layer than an other portion of said second lead layer,
said first lead layer does not intervene between said first magnetic shield layer and said magneto-resistive layer in the
laminating direction, and does not overlap with said magneto-resistive layer in the laminating direction,
said second lead layer does not intervene between said second magnetic shield layer and said magneto-resistive layer in the
laminating direction, and does not overlap with said magneto-resistive layer in the laminating direction,
a second portion of said first lead layer overlaps with both of said first and second magnetic shield layers when viewed in
the laminating direction, and
a second portion of said second lead layer overlaps with both of said first and second magnetic shield layers when viewed
in the laminating direction.
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