Thin film magnetic head and method of manufacturing the same

Details Thin film magnetic head and method of manufacturing the same Thin film magnetic head and method of manufacturing the same

2006-08-15

2006-08-15

Davis, David (Department: 2652)

Dynamic magnetic information storage or retrieval

Head

Core

Reexamination Certificate

active

07092207

ABSTRACT:
A thin film magnetic head and a method of manufacturing the same allowing miniaturization of a magnetic pole width with high precision are provided. After forming a first insulating layer portion having an opening between a thin film coil and a position corresponding to the ABS to cover the thin film coil, a second insulating layer portion is formed to cover at least this opening. A top pole is then formed on the second insulating layer portion. Because part of the second insulating layer portion is provided in the opening, the surface of the second insulating layer portion is positioned lower at the portion corresponding to the opening region as compared to the configuration where no opening is disposed in the first insulating layer portion. As a result, the apex angle is reduced, thereby making it possible to miniaturize a tip portion of the top pole with high precision.

REFERENCES:
patent: 6747842 (2004-06-01), Matono

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