Multilayer coil component
US-2019214188-A1 · Jul 11, 2019 · US
Coil component
US12567531B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12567531-B2 |
| Application number | US-202217816927-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 2, 2022 |
| Priority date | Aug 5, 2021 |
| Publication date | Mar 3, 2026 |
| Grant date | Mar 3, 2026 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A multilayer coil component includes a base body containing magnetic metal particles, and a coil embedded in the base body. The coil includes a plurality of inner electrode layers containing silver, and the inner electrode layers include a first inner electrode layer having a high pore area ratio and a second inner electrode layer having a low pore area ratio.
First claim
Opening claim text (preview).
What is claimed is: 1 . A multilayer coil component comprising: a base body containing magnetic metal particles; and a coil embedded in the base body, wherein the coil includes a plurality of inner electrode layers containing silver, the inner electrode layers include a first inner electrode layer having a high pore area ratio and a second inner electrode layer having a low pore area ratio lower than the high pore area ratio, each of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer, and the first inner electrode layer has a pore area ratio of from 10% to 20%, and the second inner electrode layer has a pore area ratio of from 1% to 5%. 2 . The multilayer coil component according to claim 1 , wherein at least one of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 3 . The multilayer coil component according to claim 1 , wherein the base body includes a magnetic material layer containing the magnetic metal particles, and the magnetic material layer includes a first magnetic material layer containing insulation-coated magnetic metal particles and a second magnetic material layer containing magnetic metal particles having an oxide film on their surfaces. 4 . The multilayer coil component according to claim 3 , wherein each of two principal surfaces of the second inner electrode layer is in contact with the second magnetic material layer. 5 . The multilayer coil component according to claim 4 , wherein at least one of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 6 . The multilayer coil component according to claim 4 , wherein each of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 7 . The multilayer coil component according to claim 4 , wherein the first inner electrode layer has a pore area ratio of from 10% to 20%, and the second inner electrode layer has a pore area ratio of from 1% to 5%. 8 . The multilayer coil component according to claim 3 , wherein at least one of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 9 . The multilayer coil component according to claim 3 , wherein each of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 10 . The multilayer coil component according to claim 3 , wherein the first inner electrode layer has a pore area ratio of from 10% to 20%, and the second inner electrode layer has a pore area ratio of from 1% to 5%. 11 . The multilayer coil component according to claim 1 , wherein the base body includes a magnetic material layer containing the magnetic metal particles and a low-permeability layer having a lower magnetic permeability than the magnetic material layer, and the low-permeability layer is located between the plurality of inner electrodes layers. 12 . The multilayer coil component according to claim 11 , wherein each of two principal surfaces of the second inner electrode layer is in contact with the low-permeability layer. 13 . The multilayer coil component according to claim 12 , wherein the low-permeability layer is a non-magnetic ferrite layer. 14 . The multilayer coil component according to claim 12 , wherein at least one of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 15 . The multilayer coil component according to claim 11 , wherein the low-permeability layer is a non-magnetic ferrite layer. 16 . The multilayer coil component according to claim 11 , wherein at least one of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 17 . The multilayer coil component according to claim 11 , wherein each of a lowermost inner electrode layer and an uppermost inner electrode layer is the first inner electrode layer. 18 . The multilayer coil component according to claim 11 , wherein the first inner electrode layer has a pore area ratio of from 10% to 20%, and the second inner electrode layer has a pore area ratio of from 1% to 5%.
Assignees
Inventors
Classifications
made from particles (H01F27/26 takes precedence) · CPC title
on stacked layers · CPC title
with control winding for generating magnetic bias · CPC title
- H01F27/2804Primary
Printed windings · CPC title
- H01F29/14Primary
with variable magnetic bias ({amplitude modulation by means of variable impedance element H03C1/08} ; magnetic amplifiers H03F; {circuits for automatic telephonic communication H04M3/00}) · CPC title
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Frequently asked questions
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- What does patent US12567531B2 cover?
- A multilayer coil component includes a base body containing magnetic metal particles, and a coil embedded in the base body. The coil includes a plurality of inner electrode layers containing silver, and the inner electrode layers include a first inner electrode layer having a high pore area ratio and a second inner electrode layer having a low pore area ratio.
- Who is the assignee on this patent?
- Murata Manufacturing Co
- What technology area does this patent fall under?
- Primary CPC classification H01F27/2804. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 03 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).