Multilayer capacitor
US-2024339267-A1 · Oct 10, 2024 · US
Multilayer ceramic electronic component
US2025037937A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025037937-A1 |
| Application number | US-202418910087-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 9, 2024 |
| Priority date | Apr 13, 2022 |
| Publication date | Jan 30, 2025 |
| Grant date | — |
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Abstract
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A multilayer ceramic electronic component that includes: a ceramic layer that contains a Ba—Nd—Ti oxide, forsterite, barium borosilicate glass, and MnO; and an electrode in contact with the ceramic layer, wherein the ceramic layer includes a Nd uneven distribution portion where Nd is unevenly distributed at an interface where the ceramic layer is in contact with the electrode.
First claim
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1 . A multilayer ceramic electronic component comprising: a ceramic layer containing a Ba—Nd—Ti oxide, forsterite, barium borosilicate glass, and MnO; and an electrode in contact with the ceramic layer, wherein the ceramic layer includes a Nd uneven distribution portion where Nd is unevenly distributed at an interface where the ceramic layer is in contact with the electrode. 2 . The multilayer ceramic electronic component according to claim 1 , wherein the Ba—Nd—Ti oxide spreads within the ceramic layer. 3 . The multilayer ceramic electronic component according to claim 1 , wherein the Nd uneven distribution portion has a thickness of 0.2 μm to 5 μm along the interface with the ceramic layer. 4 . The multilayer ceramic electronic component according to claim 3 , wherein the thickness of the Nd uneven distribution portion along the interface with the ceramic layer is 1 μm to 3 μm. 5 . The multilayer ceramic electronic component according to claim 1 , wherein the Nd uneven distribution portion is present along an entire periphery of the interface where the ceramic layer is in contact with the electrode. 6 . The multilayer ceramic electronic component according to claim 1 , wherein the ceramic layer contains celsian, and a thickness of the Nd uneven distribution portion is greater than a smallest celsian crystal size. 7 . The multilayer ceramic electronic component according to claim 1 , wherein Nd, Ti, and Ba concentrations in the Nd uneven distribution portion are two or more times Nd, Ti, and Ba concentrations in a portion other than the Nd uneven distribution portion of the ceramic layer, respectively. 8 . The multilayer ceramic electronic component according to claim 1 , wherein the Ba—Ti—Nd oxide is unevenly distributed in the entire Nd uneven distribution portion. 9 . The multilayer ceramic electronic component according to claim 1 , wherein the ceramic layer contains an alkaline earth metal. 10 . The multilayer ceramic electronic component according to claim 1 , wherein the Ba—Nd—Ti oxide is located in an inner portion of the ceramic layer. 11 . The multilayer ceramic electronic component according to claim 1 , wherein the ceramic layer includes multiple ceramic layers, and no Nd uneven distribution portion is present at an interface between adjacent ceramic layers. 12 . The multilayer ceramic electronic component according to claim 11 , wherein the multiple ceramic layers include a first ceramic layer and a second ceramic layer having different compositions, and no Nd uneven distribution portion is present at an interface between the first ceramic layer and the second ceramic layer adjacent to each other. 13 . The multilayer ceramic electronic component according to claim 12 , wherein the first ceramic layer has a permittivity lower than a permittivity of the second ceramic layer. 14 . The multilayer ceramic electronic component according to claim 1 , wherein the ceramic layer contains CaO. 15 . The multilayer ceramic electronic component according to claim 1 , wherein the electrode contains Cu.
Assignees
Inventors
Classifications
Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title
- H01G4/1227Primary
based on alkaline earth titanates · CPC title
Fried electrodes · CPC title
- H01G4/30Primary
Stacked capacitors (H01G4/33 takes precedence) · CPC title
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- What does patent US2025037937A1 cover?
- A multilayer ceramic electronic component that includes: a ceramic layer that contains a Ba—Nd—Ti oxide, forsterite, barium borosilicate glass, and MnO; and an electrode in contact with the ceramic layer, wherein the ceramic layer includes a Nd uneven distribution portion where Nd is unevenly distributed at an interface where the ceramic layer is in contact with the electrode.
- Who is the assignee on this patent?
- Murata Manufacturing Co
- What technology area does this patent fall under?
- Primary CPC classification H01G4/1227. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Jan 30 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).