Coil component

Patent metadata

Field	Value
Publication number	US-11636971-B2
Application number	US-202016786132-A
Country	US
Kind code	B2
Filing date	Feb 10, 2020
Priority date	Aug 9, 2019
Publication date	Apr 25, 2023
Grant date	Apr 25, 2023

Abstract

A coil component includes a body including a plurality of effective layers stacked in one direction; a coil portion embedded in the body, the coil portion including a plurality of coil patterns respectively disposed in the plurality of effective layers, the coil portion further including a lead-out pattern; and a core penetrating through an interior of the coil portion, wherein the coil portion further includes a resistance reducing portion extending from an outer circumferential surface of each of the coil patterns to an outside of the core in a respective one of the effective layers in a radially outward direction of the coil portion.

First claim

What is claimed is:

1. A coil component comprising:
a body including a plurality of effective layers stacked in one direction;
a coil portion embedded in the body, the coil portion including a plurality of coil patterns respectively disposed in the plurality of effective layers, the coil portion further including a lead-out pattern; and
a core penetrating through an interior of the coil portion,
wherein the coil portion further includes a resistance reducing portion extending from an outer circumferential surface of each of the coil patterns to an outside of the core in a respective one of the effective layers in a radially outward direction of the coil portion, and
wherein the resistance reducing portion is arranged between a vertex of each of the effective layers and a respective one of the coil patterns.

2. The coil component according to claim 1 , wherein the resistance reducing portion is disposed, in plural, in each of the coil patterns.

3. The coil component according to claim 1 , wherein the coil portion has a polygonal shape having an interior penetrated through by the core and an exterior having rounded vertices, when the effective layers, the coil portion, and the core are projected in the one direction.

4. The coil component according to claim 3 , wherein the core has a circular or elliptical shape.

5. The coil component according to claim 1 , wherein each of the coil patterns is formed in less than a turn.

6. The coil component according to claim 1 , further comprising first and second external electrodes disposed on at least one surface of the body and connected to the lead-out pattern.

7. The coil component according to claim 1 , further comprising first and second external electrodes arranged with being spaced apart from each other on one surface of the body, parallel to the one direction,
wherein the lead-out pattern is exposed from the one surface of the body and connected to the first and second external electrodes.

8. The coil component according to claim 1 , wherein each of the effective layers includes a magnetic powder particle and an insulating resin.

9. The coil component according to claim 1 , wherein each of the effective layers includes a dielectric powder particle and an insulating resin.

10. The coil component according to claim 1 , wherein the coil portion further includes a via penetrating through each of the effective layers to connect adjacent coil patterns to each other.

11. A coil component comprising:
a coil portion including a plurality of coil patterns connected to each other; and
a body including a core formed by stacking a plurality of effective layers in which the coil patterns are respectively disposed, the core penetrating through an interior of each of the coil patterns,
wherein each of the coil patterns includes at least one resistance reducing portion extending to an outside of each of the coil patterns, opposing the interior of each of the coil patterns, to increase a cross-sectional area of each of the coil patterns,
wherein a cross-sectional area of the at least one resistance reducing portion increases and then decreases in a circumferential direction of the core.

12. The coil component according to claim 11 , wherein any one of the at least one resistance reducing portion is arranged between a vertex of a corresponding one of the effective layers and a center axis of the core.

13. The coil component according to claim 11 , wherein the at least one resistance reducing portion is disposed, in plural, in each of the coil patterns.

14. The coil component according to claim 11 , wherein the coil portion has a polygonal shape having an interior penetrated through by the core and an exterior having rounded vertices, when the effective layers, the coil portion, and the core are projected in one direction in which the plurality of effective layers are stacked.

15. The coil component according to claim 14 , wherein the core has a circular or elliptical shape.

16. A coil component comprising:
a body including a plurality of effective layers stacked in one direction;
a coil portion embedded in the body, the coil portion including a plurality of coil patterns respectively disposed in the plurality of effective layers, the coil portion further including first and second lead-out patterns on opposite ends of the coil portion; and
a core penetrating through an interior of each of the coil patterns,
wherein at least one of the plurality of coil patterns includes a resistance reducing portion and a portion having a via,
in a radial direction of the coil portion, a width of the resistance reducing portion is larger than a width of the at least one of the coil patterns, and
the resistance reducing portion of the at least one of the coil patterns is arranged between a vertex of a corresponding one of the effective layers and a center axis of the core.

17. The coil component according to claim 16 , further comprising first and second external electrodes disposed on at least one surface of the body and respectively connected to the first and second lead-out patterns.

18. The coil component according to claim 16 , wherein the at least one of the plurality of coil patterns includes first and second vias disposed on opposite ends thereof, and
wherein the resistance reducing portion is arranged between the first and second vias.

19. The coil component according to claim 16 , wherein the at least one of the plurality of coil patterns includes a first via disposed on an end thereof and one of the first and second lead-out patterns, and
wherein the resistance reducing portion is arranged between the first via and the one of the first and second lead-out patterns.

Assignees

• Samsung Electro Mech

Inventors

• Jung Ye Eun
• Hyun Jin Gul
• Lee Han

Classifications

• H01F27/2804

  Printed windings · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H01F2017/0066

  with a magnetic layer · CPC title

• H01F17/04

  with magnetic core · CPC title

• H01F2017/0073

  with a special conductive pattern, e.g. flat spiral · CPC title