发明名称 |
Magnetic head having write head with helical coil and method for fabrication thereof |
摘要 |
The present invention is a magnetic head having a helical induction coil and includes hard disk drive devices that utilize the magnetic head. The helical coil is fabricated around a magnetic pole yoke in a series of process steps that include a reactive ion etch (RIE) process step which is utilized to simultaneously form vertical interconnect vias and upper helical coil member trenches. Thereafter, in a single fabrication step, such as by electroplating, the vertical interconnect lines and the upper helical coil traces are created in a single fabrication step, such that they are integrally formed. The vertical interconnect lines provide an electrical connection between outer ends of previously formed lower helical coil traces and outer ends of the integrally formed upper helical coil traces, such that a helical coil is fabricated. In the preferred embodiment, the helical coil is composed of copper.
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申请公布号 |
US2004264045(A1) |
申请公布日期 |
2004.12.30 |
申请号 |
US20030611090 |
申请日期 |
2003.06.30 |
申请人 |
DILL FREDERICK HAYES;FONTANA ROBERT EDWARD;HSIAO RICHARD;SANTINI HUGO ALBERTO EMILIO |
发明人 |
DILL FREDERICK HAYES;FONTANA ROBERT EDWARD;HSIAO RICHARD;SANTINI HUGO ALBERTO EMILIO |
分类号 |
G11B5/012;G11B5/127;G11B5/17;G11B5/31;(IPC1-7):G11B5/17 |
主分类号 |
G11B5/012 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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