Electronic component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2016189840-A1
Application number	US-201514949425-A
Country	US
Kind code	A1
Filing date	Nov 23, 2015
Priority date	Dec 30, 2014
Publication date	Jun 30, 2016
Grant date	—

Abstract

An electronic component includes a magnetic body, and a coil pattern embedded in the magnetic body and including internal coil parts having a spiral shape and lead parts connected to ends of the internal coil parts and externally exposed from the magnetic body. The lead parts include a plurality of protruding portions spaced apart from each other and connected to the ends of the internal coil parts to protrude externally from the ends of the internal coil parts.

First claim

What is claimed is:

1 . An electronic component comprising:
a magnetic body; and a coil pattern embedded in the magnetic body and including internal coil parts having a spiral shape and lead parts connected to ends of the internal coil parts and externally exposed from the magnetic body, wherein the lead parts include a plurality of protruding portions spaced apart from each other and connected to the ends of the internal coil parts to protrude externally from the ends of the internal coil parts.

2 . The electronic component of claim 1 , wherein spaces between the plurality of protruding portions are filled with a material the same as a material forming the magnetic body.

3 . The electronic component of claim 1 , further comprising external electrodes disposed on outer surfaces of the magnetic body and connected to the lead parts.

4 . The electronic component of claim 3 , wherein the external electrodes are connected to the plurality of protruding portions of the lead parts.

5 . The electronic component of claim 4 , wherein spaces between the plurality of protruding portions are filled with a material the same as a material forming the magnetic body such that the plurality of protruding portions contact the external electrodes.

6 . The electronic component of claim 5 , wherein coupling force between the magnetic body and the external electrodes is greater than coupling force between the plurality of protruding portions and the external electrodes.

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

8 . The electronic component of claim 1 , wherein the coil pattern comprises a first coil pattern disposed on one surface of an insulating substrate and a second coil pattern disposed on the other surface of the insulating substrate opposing the one surface of the insulating substrate.

9 . The electronic component of claim 8 , wherein the insulating substrate includes a through-hole penetrating through a central portion thereof, and the through-hole of the insulating substrate is filled with a material the same as a material forming the magnetic body.

10 . The electronic component of claim 1 , wherein the magnetic body includes a magnetic metal powder and a thermosetting resin.

11 . A method of manufacturing an electronic component, the method comprising:
forming coil patterns on an insulating substrate; and providing magnetic sheets on an upper surface and a lower surface of the insulating substrate on which the coil patterns are formed, to form a magnetic body, wherein the coil patterns include internal coil parts having a spiral shape and lead parts connected to ends of the internal coil parts and exposed to surfaces of the magnetic body, and the lead parts include a plurality of protruding portions spaced apart from each other and connected to the ends of the internal coil parts to protrude externally from the ends of the internal coil parts.

12 . The method of claim 11 , wherein spaces between the plurality of protruding portions are filled with a material the same as a material forming the magnetic body.

13 . The method of claim 11 , further comprising forming external electrodes on outer surfaces of the magnetic body to be connected to the lead parts.

14 . The method of claim 13 , wherein the external electrodes are formed to be connected to the plurality of protruding portions of the lead parts.

15 . The method of claim 14 , wherein the external electrodes are formed to be in contact with regions of spaces between the plurality of protruding portions in the magnetic body, the regions being filled with a material the same as a material forming the magnetic body.

16 . The method of claim 15 , wherein coupling force between the magnetic body and the external electrodes is greater than coupling force between the plurality of protruding portions and the external electrodes.

17 . The method of claim 11 , wherein the coil patterns is formed by a plating process.

18 . The method of claim 11 , further comprising:
removing a central portion of the insulating substrate so as to form a core part hole; and filling the core part hole formed in the insulating substrate with a same magnetic material for forming the magnetic body.

Assignees

• Samsung Electro Mech

Inventors

• Ahn Jin Mo
• Oh Yun Suk

Classifications

• H01F27/292

  Surface mounted devices · CPC title

• H01F17/04

  with magnetic core · CPC title

• H01F17/00 Primary

  Fixed inductances of the signal type {(coils in general H01F5/00)} · CPC title

• H01F27/28

  Coils; Windings; Conductive connections · CPC title

• H01F41/046 Primary

  structurally combined with ferromagnetic material · CPC title