# US 10,312,015 B2 · Electronic component

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- Number: US 10,312,015 B2
- Document ID: US10312015B2
- Status: Granted
- Kind: B2
- Application number: 15/412,506
- Filed: 2017-01-23
- Published: 2017-09-28
- Granted: 2019-06-04
- Earliest claimed: 2016-03-24
- Assignees: Taiyo Yuden Co., Ltd.
- Applicants: Taiyo Yuden Co., Ltd.
- Inventors: Tsuyoshi Ogino; Takayuki Sekiguchi; Koji Otsuka
- Web page: https://patentgrep.com/patent/US10312015B2

## CPC

- H01F 27/32: Insulating of coils, windings, or parts thereof
- H01F 17/0013: {with stacked layers}
- H01F 27/022: {Encapsulation}
- H01F 27/28: Coils; Windings; Conductive connections
- H01F 27/292: {Surface mounted devices}
- H01F 41/04: for manufacturing coils {(coils for transformer or inductances H01F27/28)}
- H01F 2017/0026: {Multilayer LC-filter}
- H01F 2017/004: {with the coil helically wound around an axis without a core}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

An electronic component according one embodiment of the disclosure includes an insulator, an internal conductor, and an external electrode. The insulator may be formed of a material that contains resin. The internal conductor is provided inside the insulator and includes a conductive main body and an outer coating film that is provided on at least a part of a peripheral surface of the conductive main body and has a resistivity higher than the conductive main body. The external electrode is disposed on the insulator and electrically coupled to the internal conductor.

## Claims

### Claim 1

An electronic component, comprising:
an insulator formed of a material that contains resin;
an internal conductor including a conductive main body and an outer coating film and provided inside the insulator, the outer coating film being provided on at least a part of a peripheral surface of the conductive main body and having a resistivity higher than the conductive main body; and
an external electrode provided on the insulator and electrically coupled to the internal conductor, wherein
the insulator includes a first insulating layer that has a bonding surface perpendicular to the one axial direction and a second insulating layer bonded to the bonding surface,
the internal conductor includes a plurality of pillared conductive members that extend in one axial direction and a plurality of connecting conductive members that each couples predetermined two pillared conductive members among the plurality of pillared conductive members,
the plurality of pillared conductive members and the plurality of connecting conductive members form a coil portion wound around an axis perpendicular to the one axial direction, and
the plurality of pillared conductive members each include a first via conductive member that is provided in the first insulating layer and a second via conductive member that is provided in the second insulating layer and bonded to the first via conductive member.

### Claim 2 (depends on 1)

The electronic component of claim 1, wherein
the conductive main body is made of a metal, and the outer coating film is made of an oxide of the metal.

### Claim 3 (depends on 1)

The electronic component of claim 1, wherein
the internal conductor further includes a contact disposed between the first via conductive member and the second via conductive member, and
the contact is formed of a conductive material different from that of the conductive main body.

### Claim 4 (depends on 3)

The electronic component of claim 3, wherein
the first and second via conductive members are made of a metallic material containing copper, silver or nickel, and
the contact is formed of a metallic material containing titanium or chromium.

### Claim 5 (depends on 1)

The electronic component of claim 1, further comprising:
a capacitor element including a first internal electrode layer that is coupled to one end of the coil portion and a second internal electrode layer that is coupled to the other end of the coil portion and faces the first internal electrode layer in the one axial direction, the capacitor element being disposed between the coil portion and the external electrode.

### Claim 6 (depends on 1)

The electronic component of claim 1, wherein
the internal conductor includes a plurality of windings, and
the plurality of windings form a coil portion that is wound around one axial direction.

### Claim 7 (depends on 1)

The electronic component of claim 1, wherein
the insulator is formed of a material containing resin and ceramic particles.