Multilayer ceramic capacitor and manufacturing method of multilayer ceramic capacitor
US-2019267189-A1 · Aug 29, 2019 · US
Multilayer capacitor
US10629381B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10629381-B2 |
| Application number | US-201816143215-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 26, 2018 |
| Priority date | Aug 1, 2018 |
| Publication date | Apr 21, 2020 |
| Grant date | Apr 21, 2020 |
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- Title
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- Abstract
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Abstract
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A multilayer capacitor includes a body in which a plurality of internal electrodes are stacked, including a ceramic sintered body; and external electrodes disposed on an external surface of the body and electrically connected to the internal electrodes. The ceramic sintered body includes a liquid pocket.
First claim
Opening claim text (preview).
What is claimed is: 1. A multilayer capacitor comprising: a body in which a plurality of internal electrodes are stacked, including a ceramic sintered body; and external electrodes disposed on an external surface of the body and electrically connected to the internal electrodes, wherein the ceramic sintered body includes a liquid pocket, and wherein the liquid pocket is disposed at a grain boundary in the ceramic sintered body. 2. The multilayer capacitor of claim 1 , wherein the liquid pocket is disposed at a multiple grain boundary by at least three grains adjacent to each other among a plurality of grains included in the ceramic sintered body. 3. The multilayer capacitor of claim 1 , wherein among a plurality of grains included in the ceramic sintered body, a grain adjacent to the liquid pocket has a smaller size than that of a grain not adjacent to the liquid pocket. 4. The multilayer capacitor of claim 3 , wherein among the plurality of grains included in the ceramic sintered body, an average size of the grains adjacent to the liquid pocket is smaller than an average size of the grains that are not adjacent to the liquid pocket. 5. The multilayer capacitor of claim 4 , wherein among the plurality of grains included in the ceramic sintered body, an average size of the grains adjacent to the liquid pocket is smaller than a half of the average size of the grains that are not adjacent to the liquid pocket. 6. The multilayer capacitor of claim 1 , wherein the ceramic sintered body further includes a void. 7. The multilayer capacitor of claim 6 , wherein the void has a larger size than that of the liquid pocket. 8. The multilayer capacitor of claim 6 , wherein the void has a size of 0.1 to 10 μM based on a cross section. 9. The multilayer capacitor of claim 1 , wherein the ceramic sintered body is foil Jed of a BT based ceramic material, and contains at least one of Si or Al ingredients as addition ingredients. 10. The multilayer capacitor of claim 1 , wherein an average interval between internal electrodes adjacent to each other among the plurality of internal electrodes is 0.4 μm or less. 11. The multilayer capacitor of claim 1 , wherein an, average thickness of the plurality of internal electrodes is 0.4 μm or less. 12. The multilayer capacitor of claim 1 , wherein the liquid pocket is disposed in a dielectric layer separating adjacent internal electrodes. 13. A multilayer capacitor comprising: a body in which a plurality of internal electrodes are stacked, including a ceramic sintered body; and external electrodes disposed on an external surface of the body and electrically connected to the internal electrodes, wherein the ceramic sintered body includes a liquid pocket, and wherein an average number of liquid pockets per 1 μm 2 area of the ceramic sintered body based on a cross section is within a range from 1 to 10. 14. The multilayer capacitor of claim 13 , wherein the average number of liquid pockets per 1 μm 2 area of the ceramic sintered body based on a cross section is within a range from greater than 2 to 10.
Assignees
Inventors
Classifications
Form of non-self-supporting electrodes · CPC title
- H01G4/30Primary
Stacked capacitors (H01G4/33 takes precedence) · CPC title
Ceramic dielectrics {(H01G4/085 takes precedence)} · CPC title
- H01G4/1227Primary
based on alkaline earth titanates · CPC title
Liquid dielectrics · CPC title
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Frequently asked questions
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- What does patent US10629381B2 cover?
- A multilayer capacitor includes a body in which a plurality of internal electrodes are stacked, including a ceramic sintered body; and external electrodes disposed on an external surface of the body and electrically connected to the internal electrodes. The ceramic sintered body includes a liquid pocket.
- Who is the assignee on this patent?
- Samsung Electro Mech
- What technology area does this patent fall under?
- Primary CPC classification H01G4/30. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 21 2020 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).