Dielectric ceramic composition and ceramic electronic device
US-9666372-B2 · May 30, 2017 · US
Ceramic electronic component
US9922766B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9922766-B2 |
| Application number | US-201615392493-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 28, 2016 |
| Priority date | Dec 28, 2015 |
| Publication date | Mar 20, 2018 |
| Grant date | Mar 20, 2018 |
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Abstract
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A ceramic electronic component includes a dielectric layer and an electrode layer. The dielectric layer contains barium titanate and yttrium. The dielectric layer contains dielectric particles and Y—Ti segregation particles. An area ratio occupied by the Y—Ti segregation particles is 1.3% or less on a cross section of the dielectric layer.
First claim
Opening claim text (preview).
The invention claimed is: 1. A ceramic electronic component comprising a dielectric layer and an electrode layer, wherein the dielectric layer contains barium titanate and yttrium, the dielectric layer contains dielectric particles and Y—Ti segregation particles, an area ratio occupied by the Y—Ti segregation particles is 1.3% or less on a cross section of the dielectric layer, the dielectric layer contains magnesium, chromium, vanadium, calcium, and silicon and an amount of yttrium is 1.0 to 1.5 mol parts in terms of Y 2 O 3 , an amount of magnesium is 1.8 to 2.5 mol parts in terms of MgO, an amount of chromium is 0.2 to 0.7 mol parts in terms of Cr 2 O 3 , an amount of vanadium is 0.05 to 0.2 mol parts in terms of V 2 O 5 , an amount of calcium is 0.5 to 2.0 mol parts in terms of CaO, and an amount of silicon is 1.65 to 3.0 mol parts in terms of SiO 2 , provided that an amount of barium titanate is 100 mol parts in terms of BaTiO 3 . 2. The ceramic electronic component according to claim 1 , wherein d50 of the dielectric particles is 0.47 μm or less. 3. The ceramic electronic component according to claim 1 , wherein a value of an amount of yttrium in terms of Y 2 O 3 in the dielectric layer divided by an amount of silicon in terms of SiO 2 in the dielectric layer is 0.79 or less. 4. The ceramic electronic component according to claim 2 , wherein a value of an amount of yttrium in terms of Y 2 O 3 in the dielectric layer divided by an amount of silicon in terms of SiO 2 in the dielectric layer is 0.79 or less.
Assignees
Inventors
Classifications
Stacked capacitors (H01G4/33 takes precedence) · CPC title
based on barium titanates · CPC title
- H01G4/1209Primary
characterised by the ceramic dielectric material (H01G4/1272, H01G4/1281 take precedence) · CPC title
based on alkaline earth titanates · CPC title
Yttrium oxide or oxide-forming salts thereof · CPC title
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- What does patent US9922766B2 cover?
- A ceramic electronic component includes a dielectric layer and an electrode layer. The dielectric layer contains barium titanate and yttrium. The dielectric layer contains dielectric particles and Y—Ti segregation particles. An area ratio occupied by the Y—Ti segregation particles is 1.3% or less on a cross section of the dielectric layer.
- Who is the assignee on this patent?
- Tdk Corp
- What technology area does this patent fall under?
- Primary CPC classification H01G4/1209. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 20 2018 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).