Circuit substrate with a built-in coil

Details Circuit substrate with a built-in coil Circuit substrate with a built-in coil

1996-09-11

2000-05-23

Donovan, Lincoln

Inductor devices

Coil or coil turn supports or spacers

Printed circuit-type coil

336223, 336232, H01F 500, H01F 2728

Patent

active

060670029

ABSTRACT:
A circuit substrate with a built-in coil has layers comprising respectively a wiring sheet, magnetic material, a flat coil, and magnetic material, which are overlaid. The wiring circuit sheet is made of polyimide, on which a circuit pattern is formed. The magnetic material is formed of a plurality of overlaid amorphous alloy sheets having slits and put together with adhesive. The flat coil may be formed by winding a copper wire covered with insulating film. The coil component, including the magnetic material and the flat coil, and the wiring circuit sheet are adhered to each other with the circuit pattern and the coil component being electrically connected to each other. According to one embodiment of the invention, the circuit substrate comprises a coil component with a flat coil and a pair of magnetic materials sandwiching the flat coil; and at least one wiring circuit sheet on which a circuit pattern is formed, the wiring circuit sheet being adhered to a surface of the coil component with the circuit pattern being electrically connected to the coil component.

REFERENCES:
patent: 3769698 (1973-11-01), Lademann et al.
patent: 4730241 (1988-03-01), Takaya
patent: 4959631 (1990-09-01), Hasegawa
patent: 5430424 (1995-07-01), Sato et al.
patent: 5552756 (1996-09-01), Ushiro
patent: 5583474 (1996-12-01), Mizoguchi et al.
patent: 5652561 (1997-07-01), Inoh et al.

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