US 2018/0019052 A1 · LAMINATED COIL COMPONENT AND METHOD OF MANUFACTURING THE SAME

Abstract

A laminated coil component is configured by laminating a plurality of magnetic layers and a plurality of coil conductors in a lamination direction. In a cross-section taken along a width direction of the coil conductors, each coil conductor has a first surface on one side in the lamination direction, a second surface on another side in the lamination direction, and side surfaces on both sides in the width direction. The second surface makes contact with the magnetic layer. A hollow cavity portion is formed between the magnetic layer, and the first surface and both side surfaces. The hollow cavity portion has a first extended portion, extending outward in a direction intersecting with the lamination direction, on the first surface side, on at least one of both end sides in the width direction.

Claims10

Dependent claims

A laminated coil component comprising

a plurality of magnetic layers and a plurality of coil conductors laminated in a lamination direction,
wherein in a cross-section taken along a width direction of the coil conductors, each of the coil conductors having a first surface on one side in the lamination direction, a second surface on another side in the lamination direction, and side surfaces on both sides in the width direction;
the second surface making contact with the magnetic layer;
a hollow cavity portion being formed between the magnetic layer, and the first surface and both the side surfaces;
and
the hollow cavity portion having a first extended portion, extending outward in a direction intersecting with the lamination direction, on the first surface side, on at least one of both end sides in the width direction.

3 more elements

A method of manufacturing a laminated coil component, the method comprising the steps of:

laminating a coil conductor on a first magnetic layer;
laminating a first burn-off material on at least part of a first surface which is an upper surface of the coil conductor, and on both side surfaces of the coil conductor in a width direction of the coil conductor;
laminating a second magnetic layer on the first magnetic layer such that the second magnetic layer does not overlap with a first region on the first surface side of the coil conductor but does overlap with a second region on both the side surface sides of the coil conductor;
laminating a second burn-off material on the first region on the first surface side of the coil conductor and on part of the second magnetic layer such that the second burn-off material is broader than a width of the first region on the first surface side of the coil conductor exposed from the second magnetic layer;
laminating a third magnetic layer on the second magnetic layer so as to overlap with the second burn-off material;
and
burning off the first burn-off material and the second burn-off material through firing.

4 more elements

Dependencies are inferred from the claim text.

Laminated coil component and method of manufacturing the same

Life of this patent

Laminated coil component and method of manufacturing the same

Life of this patent

Abstract

Claims10