Coil component and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9312068-B2
Application number	US-201414492973-A
Country	US
Kind code	B2
Filing date	Sep 22, 2014
Priority date	Nov 28, 2013
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

Disclosed herein is a coil component capable of being protected from static electricity without loss of a main magnetic flux loop. The coil component includes: a magnetic substrate; a coil layer disposed on the magnetic substrate and having conductor patterns installed therein; and an electrostatic discharge (ESD) protecting layer disposed on the coil layer and discharging static electricity introduced into the conductor patterns.

First claim

What is claimed is:

1. A coil component comprising:
a magnetic substrate;
a coil layer disposed on the magnetic substrate and having conductor patterns installed therein; and
an electrostatic discharge (ESD) protecting layer disposed on the coil layer and discharging static electricity introduced into the conductor patterns,
wherein the ESD protecting material is made of a low temperature curable resin in which electrically conductive metal powders are dispersed.

2. The coil component according to claim 1 , wherein the ESD protecting layer includes external electrodes connected to the conductor patterns through via electrodes, ground electrodes spaced apart from the external electrodes, and ESD protecting materials formed between the external electrodes and the ground electrodes.

3. The coil component according to claim 2 , wherein the ESD protecting layer further includes first bump electrodes disposed on the external electrodes, second bump electrodes disposed on the ground electrodes, and a magnetic resin material filled in the vicinity of the external electrodes and the ground electrodes as well as the first and second bump electrodes.

4. The coil component according to claim 3 , wherein the magnetic resin material comprises a mixture of a magnetic powder and a low temperature curable resin.

5. The coil component according to claim 1 , wherein an internal space except for the conductor patterns in the coil layer comprises an insulating material.

6. The coil component according to claim 1 , further comprising a magnetic resin layer disposed between the coil layer and the ESD protecting layer.

7. The coil component according to claim 6 , wherein the magnetic resin layer comprises a mixture of a magnetic powder and a low temperature curable resin.

8. The coil component according to claim 1 , wherein the conductor patterns include primary conductor patterns and secondary conductor patterns electromagnetically coupled to each other.

9. The coil component according to claim 1 , wherein the electrically conductive metal powders include at least one selected from the group consisting of Ni, Cu, Au, Ti, Cr, Ag, Pd, and Pt.

Assignees

• Samsung Electro Mech

Inventors

• Sim Won Chul
• Yang Ju Hwan

Classifications

• H01F17/0013

  with stacked layers · CPC title

• H01F27/2885

  with shields or electrodes (shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36) · CPC title

• H01F41/046 Primary

  structurally combined with ferromagnetic material · CPC title

• H01F2017/008

  Electric or magnetic shielding of printed inductances · CPC title

• H01F2017/0093

  Common mode choke coil · CPC title