Multi-layer ceramic electronic device
US-2020161051-A1 · May 21, 2020 · US
Ceramic member and electronic device
US11387021B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11387021-B2 |
| Application number | US-202017079566-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 26, 2020 |
| Priority date | Jul 10, 2018 |
| Publication date | Jul 12, 2022 |
| Grant date | Jul 12, 2022 |
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- Title
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- Abstract
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Abstract
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A ceramic member includes a perovskite compound including La, Ca, Mn, and Ti as main components, wherein the amount of Ti is about 5 parts by mole or more and about 20 parts by mole or less, the amount of Ca is about 10 parts by mole or more and about 27 parts by mole or less, and the total amount of La and Ca is about 85 parts by mole or more and about 97 parts by mole or less based on the total amount of Mn and Ti of 100 parts by mole.
First claim
Opening claim text (preview).
What is claimed is: 1. A thermistor device comprising: an element body including a ceramic member and electrodes; wherein the ceramic member includes a perovskite compound including La, Ca, Mn, and Ti as main components; and an amount of Ti is about 5 parts by mole or more and about 20 parts by mole or less, an amount of Ca is about 10 parts by mole or more and about 27 parts by mole or less, and a total amount of La and Ca is about 85 parts by mole or more and about 97 parts by mole or less based on a total amount of Mn and Ti of 100 parts by mole. 2. The ceramic member according to claim 1 , wherein the amount of Ti is about 18 parts by mole or less. 3. The ceramic member according to claim 1 , wherein the amount of Ti is about 7 parts by mole or more. 4. The electronic device according to claim 1 , wherein the electronic device is a single-plate NTC thermistor device. 5. The thermistor device according to claim 1 , wherein the thermistor device is a laminated NTC device. 6. An electronic device comprising: an element body including a ceramic member and two main surfaces; and electrodes each disposed on one of the two main surfaces of the element body; wherein the ceramic member includes a perovskite compound including La, Ca, Mn, and Ti as main components; and an amount of Ti is about 5 parts by mole or more and about 20 parts by mole or less, an amount of Ca is about 10 parts by mole or more and about 27 parts by mole or less, and a total amount of La and Ca is about 85 parts by mole or more and about 97 parts by mole or less based on a total amount of Mn and Ti of 100 parts by mole. 7. The electronic device according to claim 6 , wherein the electronic device is a thermistor device. 8. The electronic device according to claim 6 , wherein the amount of Ti is about 18 parts by mole or less. 9. The electronic device according to claim 6 , wherein the amount of Ti is about 7 parts by mole or more. 10. The electronic device according to claim 6 , wherein the electronic device is a single-plate NTC thermistor device. 11. The electronic device according to claim 6 , wherein the electronic device is a laminated NTC thermistor device. 12. An electronic device comprising: an element body including a ceramic member; an external electrode disposed on an outer surface of the element body; and an internal electrode disposed inside the element body and electrically connected to the external electrode; wherein the ceramic member includes a perovskite compound including La, Ca, Mn, and Ti as main components; and an amount of Ti is about 5 parts by mole or more and about 20 parts by mole or less, an amount of Ca is about 10 parts by mole or more and about 27 parts by mole or less, and a total amount of La and Ca is about 85 parts by mole or more and about 97 parts by mole or less based on a total amount of Mn and Ti of 100 parts by mole. 13. The electronic device according to claim 12 , wherein the electronic device is a thermistor device. 14. The electronic device according to claim 12 , wherein the amount of Ti is about 18 parts by mole or less. 15. The electronic device according to claim 12 , wherein the amount of Ti is about 7 parts by mole or more. 16. The electronic device according to claim 12 , wherein the electronic device is a single-plate NTC thermistor device. 17. The electronic device according to claim 12 , wherein the electronic device is a laminated NTC thermistor device.
Assignees
Inventors
Classifications
- H01C7/045Primary
Perovskites, e.g. titanates · CPC title
Mn3O4 · CPC title
Thermal properties, e.g. thermal expansion coefficient · CPC title
Perovskite structure ABO3 · CPC title
based on manganites · CPC title
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Frequently asked questions
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- What does patent US11387021B2 cover?
- A ceramic member includes a perovskite compound including La, Ca, Mn, and Ti as main components, wherein the amount of Ti is about 5 parts by mole or more and about 20 parts by mole or less, the amount of Ca is about 10 parts by mole or more and about 27 parts by mole or less, and the total amount of La and Ca is about 85 parts by mole or more and about 97 parts by mole or less based on the tot…
- Who is the assignee on this patent?
- Murata Manufacturing Co
- What technology area does this patent fall under?
- Primary CPC classification H01C7/045. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jul 12 2022 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).