Coil component

Patent metadata

Field	Value
Publication number	US-11646146-B2
Application number	US-202016879025-A
Country	US
Kind code	B2
Filing date	May 20, 2020
Priority date	Dec 10, 2019
Publication date	May 9, 2023
Grant date	May 9, 2023

Abstract

A coil component includes a body comprising a support member and a coil portion embedded in one surface of the support member; and external electrodes connected to the coil portion, wherein the body comprises a plurality of metal particles, at least some of the plurality of metal particles comprises a plastically deformable first particle, and at least some of the first particles have a deformed surface and thus have a shape corresponding to a surface of a neighboring magnetic metal particle.

First claim

What is claimed is:

1. A coil component comprising:
a body comprising a support member and a coil portion embedded in one surface of the support member;
an insulating layer comprises: a first layer disposed on side and upper surfaces of the coil portion; and a second layer directly disposed on the first layer; and
external electrodes connected to the coil portion,
wherein the body comprises a plurality of metal particles,
at least one of the plurality of metal particles comprise a first particle which is plastically deformable, and
at least one of the first particles have a deformed surface and thus have a shape corresponding to a surface of a neighboring magnetic metal particle.

2. The coil component of claim 1 , wherein the first particle comprises a Fe-based crystalline.

3. The coil component of claim 1 , wherein the first particle comprises pure iron.

4. The coil component of claim 1 , wherein the deformed surface of the first particle has a shape corresponding to a surface of a neighboring first particle.

5. The coil component of claim 1 , wherein the deformed surface of the first particle has a concave portion, and the surface of the neighboring first particle has a convex portion in the form of being inserted into the concave portion.

6. The coil component of claim 1 , wherein the plurality of magnetic metal particles comprises a second particle having a larger diameter than the first particle.

7. The coil component of claim 6 , wherein the second particle comprises a material not plastically deformable.

8. The coil component of claim 6 , wherein the second particle comprises a Fe-based amorphous alloy.

9. The coil component of claim 8 , wherein the first particle comprises a Fe-based crystalline.

10. The coil component of claim 6 , wherein at least one of the second particle has a spherical shape, and the first particle neighboring the spherical second particle has a shape corresponding to the surface of the spherical second particle.

11. The coil component of claim 6 , wherein the first particle has a particle size of 10 μm or less, and the second particle has a particle size of 20 μm or above.

12. The coil component of claim 1 , wherein the insulating layer has an integrated structure covering a side surface and an upper surface of the coil portion.

13. The coil component of claim 12 , wherein the insulating layer comprises F-type parylene.

14. The coil component of claim 1 , wherein the first layer comprises parylene, and the second layer comprises an epoxy resin.

15. The coil component of claim 1 , wherein the first layer is an atomic layer deposition (ALD) layer, and
the second layer comprises parylene.

16. The coil component of claim 3 , wherein the pure iron comprises carbonyl iron powder (CIP).

17. The coil component of claim 14 , wherein the parylene comprises F-type parylene.

18. The coil component of claim 15 , wherein the parylene comprises F-type parylene.

Assignees

• Samsung Electro Mech

Inventors

• Lee Young Il
• Yeo Jeong Gu
• Hwang Ji Hoon
• Shin Myoung Ki
• Moon Byeong Cheol

Classifications

• H01F1/26

  by macromolecular organic substances · CPC title

• H01F17/04 Primary

  with magnetic core · CPC title

• H01F27/255 Primary

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

• H01F27/324

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

• H01F17/0013 Primary

  with stacked layers · CPC title