Coil component

Patent metadata

Field	Value
Publication number	US-9786424-B2
Application number	US-201514936550-A
Country	US
Kind code	B2
Filing date	Nov 9, 2015
Priority date	Dec 2, 2014
Publication date	Oct 10, 2017
Grant date	Oct 10, 2017

Abstract

A coil component includes an insulating layer in which coil conductors are embedded, and a magnetic member disposed on one surface of the insulating layer and having a magnetic core protruding therefrom. The magnetic core is inserted into the insulating layer and has a width which is increased toward a lower portion thereof.

First claim

What is claimed is:

1. A coil component comprising:
an insulating layer in which coil conductors are embedded; and
a magnetic member in contact with one surface of the insulating layer and having a magnetic core protruding from the magnetic member,
wherein the magnetic core protrudes into a cavity of the insulating layer and has a width that increases toward the other surface of the insulating layer,
wherein a cross-section of the cavity at the other surface has a width greater than that of a cross-section of the cavity at the one surface,
wherein the magnetic core includes a same magnetic resin as the magnetic member, and
wherein the magnetic core fills at least a central region of the cross-section of the cavity at the other surface.

2. The coil component of claim 1 , wherein the magnetic core is formed at a central portion of the magnetic member and the coil conductors have coil patterns wound around the magnetic core.

3. The coil component of claim 1 , wherein a ratio of a width of the magnetic core at the surface in contact with the insulating layer to a width of the magnetic core at the other surface of the insulating layer is more than one time to four times or less.

4. The coil component of claim 1 , wherein the magnetic core has any one of an elongated oval shape, a circular shape, an oval shape, and a quadrangular shape when viewed from the top.

5. The coil component of claim 1 , wherein the magnetic member is a magnetic resin complex formed by dispersing magnetic powder particles in a polymer resin.

6. The coil component of claim 1 , further comprising a magnetic substrate disposed in contact with the other surface of the insulating layer.

7. The coil component of claim 1 , wherein the coil conductors comprise a first coil conductor and a second coil conductor disposed on upper and lower layers and spaced apart from each other, and
the number of coil turns of the second coil conductor disposed on the upper layer is greater than the number of coil turns of the first coil conductor disposed on the lower layer.

8. The coil component of claim 1 , further comprising external terminals formed in corner portions above the insulating layer and electrically connected to the coil conductors.

9. The coil component of claim 1 , wherein the width increases from the one surface to the other surface.

Assignees

• Samsung Electro Mech

Inventors

• Park Seung Wook
• Sim Won Chul
• Kim Kwang Mo

Classifications

• H01F17/0033 Primary

  with the coil helically wound around a magnetic core · CPC title

• H01F17/0013

  with stacked layers · CPC title

• H01F27/2866

  Combination of wires and sheets · CPC title

• H01F17/0006

  Printed inductances (printed coils for dynamo-electric machines H02K3/26; printed circuits H05K) · CPC title

• H01F27/28

  Coils; Windings; Conductive connections · CPC title