Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1994-12-02
1996-06-25
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428615, 428620, 428901, 360126, 36013023, 36013032, B32B 900
Patent
active
055298311
ABSTRACT:
A thin film device comprising a substrate which is magnetic and has insulation property at least on the surface, coils formed spirally in a planar configuration on the substrate, a first interlayer insulation film formed to a portion excepting for the terminal portion of the coils and a magnetic material connection portion of the substrate, a magnetic film and a second interlayer insulation film formed successively on the first interlayer insulation film excepting for the terminal portions, and bump electrodes formed in connection with the terminal portions in which a crystallite material having a composition: Fe.sub.78 Ta.sub.10 C.sub.12 is used as the magnetic film. The thin film device can be formed an a reduced size and having a large inductance value. When the device is used as a noise filter, a cut-off frequency range can be lowered.
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patent: 4819113 (1989-04-01), Kubota et al.
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patent: 5431987 (1995-07-01), Ikeda
"A Study on Arranged Spiral Coil Type Inductor" from Papers of Technical Meeting (Meeting on Magnetics), published on Jan. 20, 1992; Editor: The Institute of Electrical Engineering of Japan.
Bitoh Mitsuo
Kakihara Yoshinobu
Sasai Kiyoshi
Shimizu Kenji
Sudoh Yoshihiro
Alps Electric Co. ,Ltd.
Bever Patrick T.
Lee Kam F.
Ryan Patrick J.
Shoup Guy W.
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