Invention Grant
- Patent Title: Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus
- Patent Title (中): 复合薄膜磁头,磁头组件和磁盘驱动装置
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Application No.: US11393775Application Date: 2006-03-31
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Publication No.: US07675716B2Publication Date: 2010-03-09
- Inventor: Takeo Kagami , Hiroshi Kiyono , Hiraku Hirabayashi , Eiichi Omata , Seiji Yari , Takamitsu Sakamoto
- Applicant: Takeo Kagami , Hiroshi Kiyono , Hiraku Hirabayashi , Eiichi Omata , Seiji Yari , Takamitsu Sakamoto
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-141096 20050513; JP2005-311063 20051026; JP2006-062468 20060308
- Main IPC: G11B5/39
- IPC: G11B5/39 ; G11B5/31

Abstract:
A composite thin-film magnetic head includes a substrate, an under layer formed on the substrate, an MR read head element formed on the under layer and provided with a lower shield layer, an upper shield layer and an MR layer in which a sense current flows in a direction perpendicular to a surface of the MR layer through the upper shield layer and the lower shield layer, an inter-shield insulation layer laminated on the MR read head element, an inductive write head element formed on the inter-shield insulation layer and provided with a first magnetic pole layer, a nonmagnetic layer, a second magnetic pole layer whose end portion is opposed to an end portion of the first magnetic pole layer through the nonmagnetic layer, and a write coil, and an additional shield layer formed between the upper shield layer and the first magnetic pole layer.
Public/Granted literature
- US20060256481A1 Composite thin-film magnetic head, magnetic head assembly and magnetic disk drive apparatus Public/Granted day:2006-11-16
Information query
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