# US 12,112,880 B2 · Coil component

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- Number: US 12,112,880 B2
- Document ID: US12112880B2
- Status: Granted
- Kind: B2
- Application number: 18/386,205
- Filed: 2023-11-01
- Published: 2024-02-22
- Granted: 2024-10-08
- Earliest claimed: 2019-12-26
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Sung Sik Shin; Jae Wook Lee; Sung Young Jo
- Web page: https://patentgrep.com/patent/US12112880B2

## CPC

- H01F 17/0013: {with stacked layers}
- H01F 27/29: Terminals; Tapping arrangements {for signal inductances}
- H01F 27/2804: {Printed windings}
- H01F 27/292: {Surface mounted devices}
- H01F 27/32: Insulating of coils, windings, or parts thereof
- H01F 41/041: {Printed circuit coils (apparatus or processes for manufacturing printed circuits in general H05K3/00)}
- H01F 41/12: Insulating of windings ({impregnating or encapsulating of transformers H01F41/005} ; of conductors in general H01B13/06)
- H01F 27/2809: {on stacked layers}
- H01F 2017/048: {with encapsulating core, e.g. made of resin and magnetic powder}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

A coil component includes a body having one surface and the other surface, opposing each other in one direction, and one end surface connecting the one surface and the other surface to each other, a support substrate embedded in the body, a coil portion disposed on the support substrate and including a lead-out pattern exposed from the one end surface, a first insulating layer disposed on the one end surface and having one region and the other regions spaced apart from each other in the other direction crossing the one direction, an external electrode having a connection portion, disposed between the one region and the other region to be connected to the lead-out pattern, and an extension portion extending from the connection portion to the one surface, and a second insulating layer disposed on the one end surface to cover the first insulating layer and the connection portion.

## Claims

### Claim 1

A coil component comprising:
a body in which a support substrate is embedded;
a coil portion disposed on the support substrate and including a first lead-out pattern and a second lead-out pattern respectively exposed from one end surface and the other end surface of the body, opposing each other;
a first external electrode having a first connection portion covering the first lead-out pattern, and a first extension portion extending from the first connection portion onto the one surface of the body;
a second external electrode having a second connection portion covering the second lead-out pattern, and a second extension portion extending from the second connection portion onto the one surface of the body;
a first insulating layer disposed on the body having openings exposing the first and second external electrodes; and
a second insulating layer disposed on the one end surface and the other end surface, and covering the first and second connection portions and portions of the first insulating layer disposed on the one end surface and the other end surface.

### Claim 2 (depends on 1)

The coil component of claim 1, wherein, on the one end surface, a ratio of a dimension of the first connection portion in one direction to a sum of the dimension of the first connection portion in the one direction and a dimension of the first insulating layer in the one direction satisfies 0.5 or more and 0.917 or less.

### Claim 3 (depends on 1)

The coil component of claim 1, wherein the first connection portion and the first extension portion include the same material, and the second connection portion and the second extension portion include the same material.

### Claim 4 (depends on 3)

The coil component of claim 3, further comprising a plating layer disposed on each of the first and second extension portions.

### Claim 5 (depends on 1)

The coil component of claim 1, wherein the second insulating layer is only disposed on the one end surface and the other end surface among all surfaces of the body.