Coil electronic component

Patent metadata

Field	Value
Publication number	US-2016307686-A1
Application number	US-201615009314-A
Country	US
Kind code	A1
Filing date	Jan 28, 2016
Priority date	Apr 16, 2015
Publication date	Oct 20, 2016
Grant date	—

Abstract

A coil electronic component includes a body including metal powder particles having shape anisotropy and a coil unit disposed in the body and having an axis perpendicular with respect to a thickness direction of the body. The metal powder particles having shape anisotropy are arranged such that a plane-shaped surface thereof is parallel to a direction of flow of magnetic flux.

First claim

What is claimed is:

1 . A coil electronic component comprising:
a body including metal powder particles having shape anisotropy; and a coil unit disposed in the body and having an axis perpendicular with respect to a thickness direction of the body, wherein the metal powder particles having shape anisotropy are arranged such that a plane-shaped surface thereof is parallel to a direction of flow of magnetic flux.

2 . The coil electronic component of claim 1 , wherein the coil unit includes an upper pattern formed on an upper surface of the body, a lower pattern formed on a lower surface of the body, and first and second through conductors connecting the upper and lower patterns through the body and spaced apart from one another.

3 . The coil electronic component of claim 2 , wherein first and second insulating layers are formed on the upper and lower surfaces of the body, respectively.

4 . The coil electronic component of claim 1 , wherein the axis of the coil unit is parallel to a width direction of the body.

5 . The coil electronic component of claim 1 , wherein the axis of the coil unit is parallel to a length direction of the body.

6 . The coil electronic component of claim 2 , wherein the distance between the first and second through conductors is 1.8 to 2.2 times a distance between at least one of the first and second through conductors and a surface of the body most adjacent thereto in a length direction or a width direction.

7 . The coil electronic component of claim 2 , wherein a cross-section of the first and second through conductors in a length-width direction is circular, oval, semi-ovate, or quadrangular.

8 . The coil electronic component of claim 2 , further comprising first and second external electrodes extending from a portion of the lower pattern of the coil unit and disposed on a lower surface of the body.

9 . The coil electronic component of claim 3 , further comprising first and second external electrodes formed on a lower surface of the second insulating layer and electrically connected to the coil unit by a via penetrating through the second insulating layer.

10 . The coil electronic component of claim 2 , wherein a cross-section of the first and second through conductors in a length-width direction is quadrangular and at least one surface of each outermost through conductors is convex.

11 . A coil electronic component comprising:
a body including a magnetic metal plate; and a coil unit disposed in the body and having an axis perpendicular with respect to a thickness direction of the body, wherein the magnetic metal plate is arranged to be parallel to a direction of flow of magnetic flux.

12 . The coil electronic component of claim 11 , wherein the coil unit includes an upper pattern formed on an upper surface of the body, a lower pattern formed on a lower surface of the body, and first and second through conductors connecting the upper and lower patterns through the body and spaced apart from one another.

13 . The coil electronic component of claim 12 , wherein first and second insulating layers are formed on the upper and lower surfaces of the body, respectively.

14 . The coil electronic component of claim 11 , wherein a thermosetting resin layer is formed on at least one surface of the magnetic metal plate.

15 . The coil electronic component of claim 11 , wherein the magnetic metal plate is cracked to include a plurality of metal fragments.

16 . The coil electronic component of claim 15 , wherein spaces between the plurality of adjacent metal fragments contain a thermosetting resin.

17 . The coil electronic component of claim 15 , wherein the magnetic metal plate is cracked such that adjacent metal fragments have shapes corresponding to each other.

18 . The coil electronic component of claim 11 , further comprising first and second external electrodes formed on a lower surface of the body and electrically connected to the coil unit.

19 . A coil electronic component comprising:
a coil unit; and a body containing metal powder particles having shape anisotropy wherein the metal powder particles have at least one major axis in a first direction that is greater in length than a minor axis of the metal powder particle in a second direction, wherein the coil unit has an axis parallel to at least one of the major axes of the metal powder particles having shape anisotropy.

20 . The coil electronic component of claim 19 , wherein the coil unit includes an upper pattern formed on an upper surface of the body, a lower pattern formed on a lower surface of the body, and first and second through conductors connecting the upper and lower patterns through the body and spaced apart from one another, and first and second insulating layers formed on the upper and lower surfaces of the body, respectively.

Assignees

• Samsung Electro Mech

Inventors

• Moon Byeong Cheol
• Park Il Jin
• Lee Se Hyung

Classifications

• H01F27/24

  Magnetic cores · CPC title

• H01F27/292

  Surface mounted devices · CPC title

• H01F27/255 Primary

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

• H01F27/28

  Coils; Windings; Conductive connections · CPC title

• H01F17/0033

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