Thin film magnetic head having Au ultrasonic connection structur

Details Thin film magnetic head having Au ultrasonic connection structur Thin film magnetic head having Au ultrasonic connection structur

1987-10-22

1989-01-03

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Hall effect

360125, G11B 512, G11B 530

Patent

active

047961325

ABSTRACT:
Conductor film terminals of a thin film magnetic head are composed of an Au film while lead terminals of a flexible printed circuit board are covered with an Au layer, so that both of these terminals can be bonded by low temperature ultrasonic bonding directly between Au and Au. The reverse surface of the lead terminals of the flexible printed circuit board is bonded and fixed to a flexible polymer resin cover film so that the dimensional accuracy of the bonded terminal portion can be improved.

REFERENCES:
patent: 3908194 (1975-09-01), Romankiw
patent: 4520413 (1985-05-01), Piotrowski et al.
patent: 4622613 (1986-11-01), Nomura et al.
patent: 4642716 (1987-02-01), Wakabayashi et al.

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