Coil component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2016196913-A1
Application number	US-201514967975-A
Country	US
Kind code	A1
Filing date	Dec 14, 2015
Priority date	Jan 6, 2015
Publication date	Jul 7, 2016
Grant date	—

Abstract

Disclosed is a coil component and method of manufacturing the coil component. The coil component includes a core magnetic layer, coil conductors formed on two opposing surfaces of the core magnetic layer, and outer magnetic layers laminated on the core magnetic layer and covering the coil conductors.

First claim

What is claimed is:

1 . A coil component comprising:
a core magnetic layer; coil conductors formed on two opposing surfaces of the core magnetic layer; and outer magnetic layers laminated on the core magnetic layer and covering the coil conductors.

2 . The coil component of claim 1 , wherein the core magnetic layer and the outer magnetic layers are made of at least one of Ni-based ferrite, Ni—Zn ferrite, or Ni—Zn—Cu ferrite.

3 . The coil component of claim 1 , further comprising insulation layers disposed between the core magnetic layer and the coil conductors.

4 . The coil component of claim 1 , further comprising polymer resin layers interposed between the core magnetic layer and the outer magnetic layers, and the coil conductors being buried in the polymer resin layers.

5 . The coil component of claim 4 , wherein the polymer resin layers comprise magnetic powder.

6 . The coil component of claim 1 , wherein the coil conductors comprise a first coil conductor and a second coil conductor that are electromagnetically coupled with each other.

7 . The coil component of claim 1 , further comprising external terminals disposed on the outer magnetic layers and electrically connected with the coil conductors.

8 . The coil component of claim 1 , wherein the coil conductors comprise metal wiring that winds on a plane in a spiral form, and the metal wiring is made of any one or any combination of silver (Ag), palladium (Pd), aluminum (Al), nickel (Ni), titanium (Ti), gold (Au), copper (Cu), and platinum (Pt).

9 . The coil component of claim 7 , wherein the coil conductors are electrically connected with external terminals through vias.

10 . The coil component of claim 4 , wherein the polymer resin layers are configured to provide electrical insulation between turns in the coil conductors.

11 . The coil component of claim 4 , wherein the polymer resin layers is configured to be heat-resistant, moisture-resistant, and an insulator.

12 . A method of manufacturing a coil component, comprising:
preparing a core magnetic layer; forming coil conductors on two opposing surfaces of the core magnetic layer; and laminating outer magnetic layers on the core magnetic layer to cover the coil conductors.

13 . The method of claim 12 , wherein the laminating of the outer magnetic layers comprise disposing polymer resin layers between the outer magnetic layers and the core magnetic layer, and compressing the outer magnetic layers towards the core magnetic layer.

14 . The method of claim 12 , further comprising coating insulation layers on the opposing surfaces of the core magnetic layer prior to the forming of the coil conductors.

15 . The method of claim 12 , further comprising forming external terminals on the outer magnetic layers.

16 . The method of claim 13 , wherein the outer magnetic layers are compressed towards the core magnetic layer under a predetermined condition.

17 . The method of claim 14 , wherein the coating of the insulation layers comprise applying a spin coating process to the core magnetic layers to form the insulation layers with thickness sufficient to cover a surface roughness of the core magnetic layer.

Assignees

• Samsung Electro Mech

Inventors

• Kim Hong-Won
• Cho Jeong-Min
• Kim Jin-Gu

Classifications

• H01F17/0013 Primary

  with stacked layers · CPC title

• H01F17/04

  with magnetic core · CPC title

• H01F41/00

  Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties · CPC title

• H01F27/245

  made from sheets, e.g. grain-oriented (H01F27/26 takes precedence) · CPC title

• H01F17/0033

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