# US 2018/0323005 A1 · Magnetic coupling coil component

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- Number: US 2018/0323005 A1
- Document ID: US20180323005A1
- Status: Published application
- Kind: A1
- Application number: 15/937,268
- Filed: 2018-03-27
- Published: 2018-11-08
- Earliest claimed: 2017-05-02
- Assignees: Taiyo Yuden Co., Ltd.
- Applicants: Taiyo Yuden Co., Ltd.
- Inventors: Natsuko SATO; Takashi NAKAJIMA
- Web page: https://patentgrep.com/patent/US20180323005A1

## CPC

- H01F 27/32: Insulating of coils, windings, or parts thereof
- H01F 17/0013: {with stacked layers}
- H01F 27/2804: {Printed windings}
- H01F 27/292: {Surface mounted devices}
- H01F 27/2809: {on stacked layers}
- H01F 2017/0066: {with a magnetic layer}
- H01F 2017/0073: {with a special conductive pattern, e.g. flat spiral}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

One object of the present invention is to provide a magnetic coupling coil component having a high coupling coefficient between coils of different lines and facilitating insulation between the coils. A coil component according to one embodiment includes: an insulator body including first insulating layers and second insulating layers stacked together in a lamination direction; first conductive patterns formed on the first insulating layers; and second conductive patterns formed on the second insulating layers. The insulator body includes a first end region, a second end region, and an intermediate region positioned between the first end region and the second end region. The first end region includes the first insulating layers only, the second end region includes the second insulating layers only, and the intermediate region includes the first insulating layers and the second insulating layers arranged alternately in the lamination direction.

## Claims

### Claim 1

A coil component, comprising:
an insulator body including a plurality of first insulating layers and a plurality of second insulating layers stacked together in a lamination direction;
a plurality of first conductive patterns formed on the plurality of first insulating layers; and
a plurality of second conductive patterns formed on the plurality of second insulating layers,
wherein the insulator body includes a first end region positioned at a top in the lamination direction, a second end region positioned at a bottom in the lamination direction, and an intermediate region positioned between the first end region and the second end region,
the first end region includes one or more of the plurality of first insulating layers only,
the second end region includes one or more of the plurality of second insulating layers only, and
the intermediate region includes other one or more of the plurality of first insulating layers and other one or more of the plurality of second insulating layers arranged alternately in the lamination direction.

### Claim 2 (depends on 1)

The coil component of claim 1, further comprising:
a first external electrode electrically connected to a first end portion of a first coil unit, the first coil unit including the plurality of first conductive patterns;
a second external electrode electrically connected to a second end portion of the first coil unit;
a third external electrode electrically connected to a first end portion of a second coil unit, the second coil unit including the plurality of second conductive patterns; and
a fourth external electrode electrically connected to a second end portion of the second coil unit,
wherein the second end portion of the first coil unit and the first end portion of the second coil unit are disposed in the intermediate region,
the first coil unit is arranged such that a voltage having a first electric potential is supplied from the second external electrode to the second end portion of the first coil unit, and
the second coil unit is arranged such that a voltage having the first electric potential is supplied from the third external electrode to the first end portion of the second coil unit.

### Claim 3 (depends on 1)

The coil component of claim 1, further comprising:
one or more first via conductive members connecting between the plurality of first conductive patterns; and
one or more second via conductive members connecting between the plurality of second conductive patterns.