Coil electronic component

Patent metadata

Field	Value
Publication number	US-2016351318-A1
Application number	US-201615081544-A
Country	US
Kind code	A1
Filing date	Mar 25, 2016
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

A coil electronic component includes a substrate; a coil pattern formed on at least one of first and second main surfaces of the substrate; a body region filling at least a core region of the coil pattern and having a magnetic material; and a magnetic flux controlling part covering at least the coil pattern and having a material having a saturation magnetic flux density higher than that of a magnetic material contained in the body region.

First claim

What is claimed is:

1 . A coil electronic component comprising:
a substrate; a coil pattern formed on at least one of first and second main surfaces of the substrate; a body region filling at least a core region of the coil pattern and having a magnetic material; and a magnetic flux controlling part covering at least the coil pattern and having a material having a saturation magnetic flux density higher than that of a magnetic material contained in the body region.

2 . The coil electronic component of claim 1 , further comprising an insulating part formed on a surface of the coil pattern to prevent short circuits between adjacent patterns in the coil pattern.

3 . The coil electronic component of claim 2 , wherein the magnetic flux controlling part is coated on a surface of the insulating part.

4 . The coil electronic component of claim 1 , wherein the magnetic flux controlling part includes a region formed in a sheet shape in the core region.

5 . The coil electronic component of claim 1 , wherein a saturation magnetic flux density of the magnetic material contained in the magnetic flux controlling part is 140 emu/g or more.

6 . The coil electronic component of claim 1 , wherein a thickness of the magnetic flux controlling part is 10 μm or more.

7 . The coil electronic component of claim 1 , wherein the coil pattern is formed by plating.

8 . The coil electronic component of claim 1 , wherein the coil pattern includes first and second coil patterns disposed on the first and second main surfaces of the substrate, respectively.

9 . The coil electronic component of claim 1 , wherein the coil pattern includes a lead portion exposed to the outside of the body region.

10 . The coil electronic component of claim 9 , further comprising external electrodes formed on surfaces of the body region and connected to the lead portion.

11 . The coil electronic component of claim 1 , wherein the body region contains metal magnetic powder and a thermosetting resin.

12 . The coil electronic component of claim 1 , wherein the body region includes first and second body regions completely separated from each other by the magnetic flux controlling part.

13 . The coil electronic component of claim 1 , wherein the magnetic flux controlling part having the material having the saturation magnetic flux density higher than any material contained in contained in the body region.

14 . The coil electronic component of claim 1 , wherein the magnetic flux controlling part having a saturation magnetic flux density higher than that of the body region.

15 . A coil electronic component comprising:
a substrate; a coil pattern formed the substrate; a body region embedding the substrate and the coil pattern; and a magnetic flux controlling part separating the coil pattern from the body region and having a saturation magnetic flux density higher than that of the body region.

16 . The coil electronic component of claim 15 , wherein a thickness of the magnetic flux controlling part is 10 μm or more.

17 . The coil electronic component of claim 15 , further comprising an insulating part interposed between the magnetic flux controlling part and the coil pattern.

18 . The coil electronic component of claim 15 , wherein the magnetic flux controlling part includes a region formed in a sheet shape in a core region at a center of the coil electronic component.

19 . The coil electronic component of claim 15 , wherein the body region includes first and second body regions completely separated from each other by the magnetic flux controlling part.

20 . The coil electronic component of claim 15 , wherein the coil pattern includes a lead portion exposed to the outside of the body region,
the coil electronic component further comprises external electrodes formed on surfaces of the body region and connected to the lead portion.

Assignees

• Samsung Electro Mech

Inventors

• Jeong Dong Jin

Classifications

• H01F27/2804 Primary

  Printed windings · CPC title

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F27/255

  made from particles (H01F27/26 takes precedence) · CPC title

• H01F17/0006 Primary

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

• H01F2017/0066

  with a magnetic layer · CPC title