Coil component and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2016343498-A1
Application number	US-201615000252-A
Country	US
Kind code	A1
Filing date	Jan 19, 2016
Priority date	May 19, 2015
Publication date	Nov 24, 2016
Grant date	—

Abstract

A coil component includes a coil unit surrounded by a magnetic body. The magnetic body includes anisotropic metal powder and isotropic metal powder, and upper and lower cover units with the coil unit interposed therebetween. The anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is oriented in a flow direction of magnetic flux, and central regions of the upper and lower cover units comprise the isotropic metal powder.

First claim

What is claimed is:

1 . A coil component comprising a coil unit surrounded by a magnetic body,
wherein the magnetic body includes anisotropic metal powder and isotropic metal powder, and upper and lower cover units with the coil unit interposed therebetween, wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is oriented in a flow direction of magnetic flux, and central regions of the upper and lower cover units comprise the isotropic metal powder.

2 . The coil component of claim 1 , wherein the anisotropic metal powder is comprised in at least one of the upper cover unit and the lower cover unit in a region corresponding to the coil unit.

3 . The coil component of claim 2 , wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is perpendicular to a thickness direction of the coil unit.

4 . The coil component of claim 1 , wherein the anisotropic metal powder is comprised in a core part formed in the middle of the coil unit.

5 . The coil component of claim 1 , wherein the anisotropic metal powder is comprised in an outer circumferential portion formed on an outer surface of the coil unit.

6 . The coil component of claim 4 , wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is parallel to a thickness direction of the coil unit.

7 . The coil component of claim 5 , wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is parallel to a thickness direction of the coil unit.

8 . The coil component of claim 1 , wherein the anisotropic metal powder is comprised in a toroidal sheet and disposed in a region corresponding to the coil unit in the first and second cover units.

9 . The coil component of claim 1 , wherein the anisotropic metal powder and the isotropic metal powder are included in a thermosetting resin in a dispersed manner.

10 . A method of manufacturing a coil component, the method comprising:
forming a coil unit; and surrounding the coil unit with a magnetic body comprising anisotropic metal powder and isotropic metal powder, wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is oriented in a flow direction of magnetic flux, and the isotropic metal powder is comprised in central regions of first and second cover units disposed with the coil unit interposed therebetween.

11 . The method of claim 10 , wherein the anisotropic metal powder is comprised in at least one of the upper cover unit and the lower cover unit in a region corresponding to the coil unit.

12 . The method of claim 10 , wherein a toroidal sheet comprising the anisotropic metal powder is disposed in a region corresponding to the coil unit in the first and second cover units.

13 . The method of claim 11 , wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is perpendicular to a thickness direction of the coil unit.

14 . The method of claim 12 , wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is perpendicular to a thickness direction of the coil unit.

15 . The method of claim 10 , wherein sheets comprising the anisotropic metal powder are disposed in a core part formed in the middle of the coil unit and at an outer circumferential portion of the coil unit.

16 . The method of claim 15 , wherein the anisotropic metal powder is arranged such that one axis of a plate-shaped plane thereof is parallel to the thickness direction of the coil unit.

Assignees

• Samsung Electro Mech

Inventors

• Lee Dong Hwan
• Yoon Chan
• Park Moon Soo
• Cha Hye Yeon
• Moon Byeong Cheol

Classifications

• H01F17/04

  with magnetic core · CPC title

• H01F2017/048

  with encapsulating core, e.g. made of resin and magnetic powder · CPC title

• H01F17/0013 Primary

  with stacked layers · CPC title

• H01G4/248

  the terminals embracing or surrounding the capacitive element, e.g. caps (H01G4/252 takes precedence) · CPC title

• H01G4/30

  Stacked capacitors (H01G4/33 takes precedence) · CPC title