Coil component and method of manufacturing the same

Details Coil component and method of manufacturing the same Coil component and method of manufacturing the same

2007-05-22

2007-05-22

Mai, Anh (Department: 2832)

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

C336S223000, C336S232000

Reexamination Certificate

active

11063829

ABSTRACT:
The invention relates to a coil component used as a major component of a common mode choke coil or transformer and a method of manufacturing the same, and the invention is aimed at providing a compact and low-profile coil component having a high common mode filtering property and a method of manufacturing the same. A common mode choke coil has a configuration in which a first insulation film, a first coil conductor, a second insulation film, a second coil conductor and a third insulation film are stacked in the order listed between magnetic substrates provided opposite to each other. A top portion of the first coil conductor is formed in a convex shape. The second insulation film is formed so as to follow the shape of the top portion of the first coil conductor. A bottom portion of the second coil conductor is formed in a concave shape such that it follows the shape of a top portion of the second insulation film.

REFERENCES:
patent: 5402293 (1995-03-01), Smith
patent: 6198374 (2001-03-01), Abel
patent: 6246541 (2001-06-01), Furuichi et al.
patent: 6624498 (2003-09-01), Filas et al.
patent: 6710694 (2004-03-01), Matsuta et al.
patent: 02-025003 (1990-01-01), None
patent: 11-054326 (1999-02-01), None
patent: 2003-133135 (2003-05-01), None

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