Coil component

Patent metadata

Field	Value
Publication number	US-10923265-B2
Application number	US-201815970355-A
Country	US
Kind code	B2
Filing date	May 3, 2018
Priority date	Dec 26, 2017
Publication date	Feb 16, 2021
Grant date	Feb 16, 2021

Abstract

A coil component includes: a body portion; and a coil portion disposed in the body portion, wherein the coil portion includes a support member and a first coil layer disposed on a first surface of the support member, the first coil layer including a first electrode portion led out to a first end surface of the body portion, the support member includes first and second insulators and a metal core disposed between the first and second insulators, and a first end portion of the metal core is led out to the first end surface of the body portion to which the first electrode portion of the first coil layer is led.

First claim

What is claimed is:

1. A coil component comprising:
a body portion; and
a coil portion disposed in the body portion,
wherein the coil portion includes a support member and a first coil layer disposed on a first surface of the support member, the first coil layer including a first electrode portion led out to a first end surface of the body portion,
the support member includes first and second insulators each having a composition different from the body portion, and a metal core disposed between the first and second insulators in a thickness direction,
a first end portion of the metal core is led out to the first end surface of the body portion, and
the coil portion further includes a first through-via penetrating through the support member and electrically connecting the first electrode portion of the first coil layer and the first end portion of the metal core to each other.

2. The coil component of claim 1 , wherein the coil portion further includes a second coil layer disposed on a second surface of the support member opposing the first surface in the thickness direction and having a second electrode portion led out to a second end surface of the body portion opposing the first end surface, and
a second end portion of the metal core is led out to the second end surface of the body portion.

3. The coil component of claim 2 , wherein the coil portion further includes a second through-via penetrating through the support member and electrically connecting the second electrode portion of the second coil layer and the second end portion of the metal core to each other.

4. The coil component of claim 3 , wherein each of the first and second through-vias has an hourglass shape.

5. The coil component of claim 2 , wherein each of the first and second coil layers has a planar spiral shape having a plurality of coil turns.

6. The coil component of claim 5 , wherein cavities penetrating through the support member are disposed between the coil turns of each of the first and second coil layers.

7. The coil component of claim 6 , wherein the metal core of the support member has a planar spiral shape corresponding to the planar spiral shape of each of the first and second coil layers.

8. The coil component of claim 6 , wherein side surfaces between the coil turns of each of the first and second coil layers and walls of the cavities of the support member are covered with an insulating film.

9. The coil component of claim 5 , wherein a through-hole penetrating through the support member is disposed in a central portion of each of the first and second coil layers.

10. The coil component of claim 9 , wherein an inner side surface of the central portion of each of the first and second coil layers and walls of the through-hole of the support member are covered with an insulating film.

11. The coil component of claim 2 , wherein the coil portion further includes a via electrode penetrating through the support member and electrically connecting the first and second coil layers to each other.

12. The coil component of claim 2 , further comprising an electrode portion disposed on the body portion,
wherein the electrode portion includes a first external electrode disposed on the first end surface of the body portion and a second external electrode disposed on the second end surface of the body portion,
the first external electrode is electrically connected to the first electrode portion of the first coil layer and the first end portion of the metal core, and
the second external electrode is electrically connected to the second electrode portion of the second coil layer and the second end portion of the metal core.

13. The coil component of claim 1 , wherein each of the first and second insulators includes an insulating resin and an inorganic filler, and
the metal core includes copper (Cu).

14. The coil component of claim 13 , wherein each of the first and second insulators further includes a glass fabric.

15. The coil component of claim 1 , wherein a first electrode surface and a first auxiliary electrode surface, spaced apart from each other, are exposed to the first end surface of the body portion,
the first electrode surface is a surface to which the first electrode portion of the first coil layer is exposed, and the first auxiliary electrode surface is a surface to which the first end portion of the metal core is exposed.

16. The coil component of claim 2 , wherein a second electrode surface and a second auxiliary electrode surface spaced apart from each other are exposed to the second end surface of the body portion,
the second electrode surface is a surface to which the second electrode portion of the second coil layer is exposed, and
the second auxiliary electrode surface is a surface to which the second end portion of the metal core is exposed.

17. The coil component of claim 1 , wherein the metal core is spaced apart from the first coil layer in the thickness direction by at least one of the first and second insulators having the composition different from the body portion.

18. A coil component comprising:
a body portion; and
a coil portion disposed in the body portion,
wherein the coil portion includes a support member and a first coil layer disposed on a first surface of the support member, the first coil layer including a first electrode portion led out to a first end surface of the body portion,
the support member includes first and second insulators and a metal core disposed between the first and second insulators,
a first end portion of the metal core is led out to the first end surface of the body portion, and
the coil portion further includes a through-via penetrating through the support member and electrically connecting the first electrode portion of the first coil layer and the first end portion of the metal core to each other.

19. The coil component of claim 18 ,
wherein the metal core has a planar spiral shape.

Assignees

• Samsung Electro Mech

Inventors

• Kim Sang Seob

Classifications

• H01F2005/006

  with conical spiral form · CPC title

• H01F27/324

  Insulation between coil and core, between different winding sections, around the coil; Other insulation structures · CPC title

• H01F27/323

  Insulation between winding turns, between winding layers · CPC title

• H01F27/306

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• H01F27/29

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