# US 12,603,219 B2 · Coil component

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,603,219 B2
- Document ID: US12603219B2
- Status: Granted
- Kind: B2
- Application number: 18/090,019
- Filed: 2022-12-28
- Published: 2024-01-04
- Granted: 2026-04-14
- Earliest claimed: 2022-06-30
- Assignees: Samsung Electro-Mechanics Co., Ltd.
- Applicants: Samsung Electro-Mechanics Co., Ltd.
- Inventors: Byeong Cheol Moon; Han Lee; Boum Seock Kim; Sang Jin Kim
- Web page: https://patentgrep.com/patent/US12603219B2

## CPC

- H01F 17/0013: {with stacked layers}
- H01F 27/292: {Surface mounted devices}
- H01F 27/2804: {Printed windings}
- H01F 27/2809: {on stacked layers}
- H01F 2017/002: {Details of via holes for interconnecting the layers}
- H01F 2017/0073: {with a special conductive pattern, e.g. flat spiral}
- 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, a substrate, a first coil, a second coil, a plurality of conductive vias connecting an innermost turn of the first coil and an innermost turn of the second coil to each other, a first external electrode connected to one end of the first coil, and a second external electrode connected to one end of the second coil, wherein the innermost turn of the first coil includes a first region having a line width, narrower than a line width of an adjacent outer turn, and the innermost turn of the second coil includes a second region having a line width, narrower than a line width of an adjacent outer turn, and at least one of the plurality of conductive vias is connected to the first region, and at least one of the other conductive vias is connected to the second region.

## Claims

### Claim 1

A coil component comprising:
a body;
a substrate disposed within the body;
a first coil disposed on a first surface of the substrate and having a plurality of turns including an innermost turn having a first region with a line width narrower than a line width of an adjacent outer turn;
a second coil disposed on a second surface of the substrate and having a plurality of turns including an innermost turn having a second region with a line width narrower than a line width of an adjacent outer turn;
a plurality of conductive vias connecting an innermost turn of the first coil and an innermost turn of the second coil to each other, at least one of the plurality of conductive vias being connected to the first region, at least one of a remainder of the plurality of conductive vias being connected to the second region;
a first external electrode disposed on the body to be connected to a first end of the first coil; and
a second external electrode disposed on the body to be connected to a first end of the second coil.

### Claim 2 (depends on 1)

The coil component of claim 1, wherein
the line width of the first region is less than or equal to half of the line width of the adjacent outer turn.

### Claim 3 (depends on 1)

The coil component of claim 1, wherein
the line width of the second region is less than or equal to half of the line width of the adjacent outer turn.

### Claim 4 (depends on 1)

The coil component of claim 1, wherein
among the plurality of conductive vias, one conductive via is connected to a second end of the first coil and another conductive via is connected to a second end of the second coil.

### Claim 5 (depends on 4)

The coil component of claim 4, wherein
the second end of the first coil has a line width, narrower than a line width of a first region of the second coil connected to a second end of the first coil by the conductive via.

### Claim 6 (depends on 4)

The coil component of claim 4, wherein
the second end of the second coil has a line width, narrower than a line width of the second region of the first region connected to a second end of the second coil by the conductive via.

### Claim 7 (depends on 4)

The coil component of claim 4, wherein
at least one of the plurality of conductive vias is disposed between a conductive via connected to the second end of the first coil and a conductive via connected to the second end of the second coil.

### Claim 8 (depends on 7)

The coil component of claim 7, wherein
the plurality of conductive vias are disposed at regular intervals.

### Claim 9 (depends on 1)

The coil component of claim 1, wherein
equal to or more than ¼ turn is formed from a second end of the first coil to a second end of the second coil when viewed in a direction perpendicular to the first surface and the second surface of the substrate.

### Claim 10 (depends on 1)

The coil component of claim 1, wherein
equal to or more than ½ turn is formed from a second end of the first coil to a second end of the second coil when viewed in a direction perpendicular to the first surface and the second surface of the substrate.

### Claim 11 (depends on 1)

The coil component of claim 1, wherein
the first region has a uniform line width on the innermost turn of the first coil.

### Claim 12 (depends on 1)

The coil component of claim 1, wherein
the second region has a uniform line width on the innermost turn of the second coil.

### Claim 13 (depends on 1)

The coil component of claim 1, wherein
the plurality of conductive vias penetrates through the substrate.

### Claim 14 (depends on 1)

The coil component of claim 1, wherein
the substrate has a through-hole formed in a region corresponding to a core of each of the first and second coils.

### Claim 15 (depends on 14)

The coil component of claim 14, wherein
a portion of the body fills the through-hole of the substrate.