Inductor and method of manufacturing the same
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsSoo Yeol KIM, Jong Seok BAE, Se Woong PAENG
Life of this patent
Estimating the term…
Abstract
An inductor includes a body in which is disposed a coil connecting a plurality of coil patterns by a via. The via includes a first conductive layer and a second conductive layer disposed on the first conductive layer, and the via has an upper portion having a transverse cross-sectional area that is greater than a transverse cross-sectional area of a lower portion thereof. An interlayer contact area of coils may be increased, thereby improving electrical characteristics and connection reliability.
Claims28
An inductor comprising:
- a body in which a coil connecting first and second coil patterns by a via is disposed,
- wherein the via includes a first conductive layer and a second conductive layer disposed on the first conductive layer, and the via has an upper portion having a transverse cross-sectional area that is greater than a transverse cross-sectional area of a lower portion of the via.
A method of manufacturing an inductor, comprising:
- forming a coil pattern on a substrate;
- forming an insulating layer on the substrate to cover the coil pattern;
- forming, in the insulating layer, a through-hole having an upper portion having a transverse cross-sectional area that is greater than a transverse cross-sectional area of a lower portion of the through-hole, wherein the lower portion of the through-hole contacts the coil pattern;
- forming a first conductive layer within the through hole, to exceed an upper surface of the insulating layer;
- forming a second conductive layer by printing a conductive paste on an upper portion of the first conductive layer;
- separating the substrate from the insulating layer including the coil pattern and the first and second conductive layers;
- and
- forming a body including a coil composed of a via including the coil pattern and the via comprising the first and second conductive layers connected to the coil pattern by laminating a plurality of the separated insulating layers.
A body comprising:
- first and second conductive patterns disposed in different planes;
- and
- a conductive via extending between and electrically connecting the first and second conductive patterns,
- wherein a contact area of the conductive via with the first conductive pattern is larger than a contact area of the conductive via with the second conductive pattern.
An inductor comprising:
- a body formed of an insulating material;
- a coil disposed in the body, the coil comprising first and second coil patterns connected by a conductive via;
- and
- first and second electrodes disposed on external surfaces of the body and connected to respective ends of the coil,
- wherein:
- the conductive via comprises a first conductive layer contacting the first coil pattern and a second conductive layer disposed on an arced surface of the first conductive layer and contacting the second coil pattern,
- the first and second conductive layers have different compositions, and
- the conductive via comprising the first and second conductive layers has a tapered profile gradually expanding between a small cross sectional area of the first conductive layer contacting the first coil pattern and a larger cross sectional area of the second conductive layer contacting the second coil pattern.
Dependencies are inferred from the claim text.