Multilayer inductor

Patent metadata

Field	Value
Publication number	US-9349525-B2
Application number	US-201414311040-A
Country	US
Kind code	B2
Filing date	Jun 20, 2014
Priority date	Dec 28, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

Disclosed herein is a multilayer inductor. The multilayer inductor according to an exemplary embodiment of the present invention includes a laminate on which a plurality of body sheets are multilayered; a coil part configured to have internal electrode patterns formed on the body sheet; a first gap made of a non-magnetic material located between the multilayered body sheets; a second gap made of a dielectric material located between the multilayered body sheets and located on a layer different from the first gap; and external electrodes formed on both surfaces of the laminate and electrically connected with both ends of the coil part. By this configuration, the exemplary embodiment of the present invention can remarkably improve DC biased characteristics without reducing breaking strength of the inductor.

First claim

What is claimed is:

1. A multilayer inductor, comprising:
a laminate on which a plurality of body sheets are multilayered;
a coil part configured to have internal electrode patterns formed on the body sheet;
a complex gap having a first gap and a second gap made of different material from that of the first gap; and
external electrodes formed on both surfaces of the laminate and electrically connected with both ends of the coil part,
wherein a first gap made of a non-magnetic material having at least one selected from the group consisting of copper (Cu), zinc (Zn), and iron (Fe) is located between the multilayered body sheets and a second gap made of a non-magnetic dielectric material or magnetic dielectric material is located between the multilayered body sheets and located on the same layer as the first gap.

2. The multilayer inductor according to claim 1 , wherein the first gap is located at both ends of the second gap.

3. The multilayer inductor according to claim 2 , wherein the second gap is formed from a center of the coil part to an outer side thereof.

4. The multilayer inductor according to claim 2 , wherein the second gap is formed from a center of the coil part to an inner side thereof.

5. The multilayer inductor according to claim 1 , wherein the second gap is located at both ends of the first gap.

6. The multilayer inductor according to claim 5 , wherein the first gap is formed from a center of the coil part to an outer side thereof.

7. The multilayer inductor according to claim 5 , wherein the first gap is formed from a center of the coil part to an inner side thereof.

8. The multilayer inductor according to claim 1 , wherein the first gap is formed to have a thickness sufficient to contact internal electrode patterns located on a top portion thereof and the internal electrode patterns located on a bottom portion thereof, simultaneously.

9. The multilayer inductor according to claim 1 , wherein the second gap is formed to have a thickness sufficient to contact internal electrode patterns located on a top portion thereof and the internal electrode patterns located on a bottom portion thereof, simultaneously.

Assignees

• Samsung Electro Mech

Inventors

• Jeong Dong Jin
• Shin Hyeog Soo

Classifications

• H01F3/14 Primary

  Constrictions; Gaps, e.g. air-gaps (in magnetic shunt paths H01F3/12) · CPC title

• H01F27/29 Primary

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

• H01F17/0033

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

• H01F27/2804

  Printed windings · CPC title

• H01F2027/2809

  on stacked layers · CPC title