Method of manufacturing coil component

Details Method of manufacturing coil component Method of manufacturing coil component

2004-08-13

2008-01-15

Trinh, Minh (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S604000, C029S605000, C336S200000

Reexamination Certificate

active

07318269

ABSTRACT:
The invention relates to a method of manufacturing a coil component uses as a major part of a common mode choke coil or a transformer, and there is provided a method of manufacturing a compact and low height coil component in which deterioration of impedance characteristics is low and reliability is high. An insulating film is formed on a magnetic substrate, and open regions are formed in the insulating film. A lead terminal portion is formed on the insulating film, and a planarizing film is formed on the open regions. An insulating film is formed and openings are formed in the insulating film at the open regions. A coil conductor is formed on the insulating film, and a planarizing film is further formed on the planarizing film. After a coil conductor is further formed on the coil conductor through the insulating film, the planarizing films are removed.

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patent: A 11-54326 (1999-02-01), None
patent: A 2003-133135 (2003-05-01), None

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