Thin film magnetic head having conductive pad including...

Details Thin film magnetic head having conductive pad including... Thin film magnetic head having conductive pad including...

2005-08-30

2005-08-30

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Fluid bearing head support

Disk record

Reexamination Certificate

active

06937438

ABSTRACT:
A thin film magnetic head is provided that includes bumps capable of securing high conductivity. The thin film magnetic head includes a coil layer for inducing a recording magnetic field between lower and upper core layers, a lead conductor layer for supplying a current to the coil layer, a conductive protective layer deposited on the lead conductor layer, a conductive bump formed on the conductive protective layer, and an insulating protective layer formed around the conductive protective layer and the conductive bump. The insulating protective layer includes a first insulating protective sub-layer formed around the conductive protective layer, the surface thereof being coplanar with the surface of the conductive protective layer, and a second insulating protective sub-layer formed separately from the first insulating protective sub-layer after the conductive bump is formed.

REFERENCES:
patent: 4759118 (1988-07-01), Nakashima
patent: 5912790 (1999-06-01), Yoda et al.
patent: 6256170 (2001-07-01), Honda

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