US 2004/0061587 A1 · Stacked coil device and fabrication method thereof

Abstract

A stacked coil device comprising: an inner electrode layer formed of at least two layers and having a non-magnetic electrode layer and an inner magnetic layer as one unit, the non-magnetic electrode layer provided with an opening at a center thereof and provided with an electrode pattern on at least one surface of an upper surface and a lower surface thereof and the inner magnetic layer positioned at the center opening and a lateral surface of the non-magnetic electrode layer; a cover layer in contact with both surfaces of the inner electrode layer; and an external electrode terminal partially and electrically connected to the electrode pattern.

Claims12

Dependent claims

A stacked coil device comprising:

an inner electrode layer formed of at least two layers and having a non-magnetic electrode layer and an inner magnetic layer as one unit;
a non-magnetic electrode layer provided with an opening at a center thereof and provided with an electrode pattern on at least one surface of upper and lower surfaces thereof;
an inner magnetic layer positioned at the center opening and a lateral surface of the non-magnetic electrode layer;
a cover layer in contact with both surfaces of the inner electrode layer;
and
an external electrode terminal electrically connected to a part of the electrode pattern.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/676,206Filed 1 Oct 2003

Priority

KR 59899/20021 Oct 2002

Published

1 Apr 2004

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H01F 17/0013
Printed inductances: with stacked layers
H01F 27/2804
Coils; Windings; Conductive connections: printed windings
H01F 41/046
Printed circuit coils: structurally combined with ferromagnetic material
H01F 38/48
Adaptations of transformers or inductances for specific applications or functions: common mode inductor for reducing or eliminating common mode…

Stacked coil device and fabrication method thereof

Life of this patent

Stacked coil device and fabrication method thereof

Life of this patent

Abstract

Claims12