Thin film magnetic head including coil insulated by organic...

Details Thin film magnetic head including coil insulated by organic... Thin film magnetic head including coil insulated by organic...

2005-07-26

2005-07-26

Davis, David D. (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

06922311

ABSTRACT:
A thin film magnetic head suitable for an increase in a packing density and an increase in frequency of a magnetic recorder is provided, while the reliability is maintained, and protrusion of a recording head portion from a surface facing a magnetic disk due to thermal expansion is reduced. In the region between a joint and a recording portion, the spacing dimension between the conductive layers of a first coil adjacent to each other is allowed to be equal to the height dimension of the conductive layer of the first coil, and the space of the first coil is filled in with an inorganic material portion of an insulating layer. Regarding the perimeter and the inside of the first coil, the portion which cannot be filled in with the inorganic material portion of the insulating layer leaving no space is filled in with an organic material portion, so that insulation is provided with reliability, and thermal expansion of the insulating film due to the heat release from the first coil is reduced by an inorganic material unlikely to thermally expand.

REFERENCES:
patent: 6185068 (2001-02-01), Fujita et al.
patent: 6204997 (2001-03-01), Sasaki
patent: 6246541 (2001-06-01), Furuichi et al.
patent: 6317288 (2001-11-01), Sasaki
patent: 6353511 (2002-03-01), Shi et al.
patent: 6353995 (2002-03-01), Sasaki et al.
patent: 2002/0030928 (2002-03-01), Hsiao et al.

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