Invention Grant
- Patent Title: Multilayer ceramic capacitor and ceramic material powder
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Application No.: US17179180Application Date: 2021-02-18
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Publication No.: US11961674B2Publication Date: 2024-04-16
- Inventor: Katsuya Taniguchi , Tsuyoshi Sogabe
- Applicant: TAIYO YUDEN CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: TAIYO YUDEN CO., LTD.
- Current Assignee: TAIYO YUDEN CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Law Office of Katsuhiro Arai
- Priority: JP 18039972 2018.03.06 JP 18220281 2018.11.26
- Main IPC: H01G4/30
- IPC: H01G4/30 ; H01G4/012 ; H01G4/12 ; H01G4/228

Abstract:
A multilayer ceramic capacitor includes: a multilayer structure in which dielectric layers and internal electrode layers are alternately stacked; wherein a main component of the dielectric layers is a ceramic material having a main phase having a perovskite structure (ABO3) wherein a B site includes an element solid-solved in the B site and acting as a donor; wherein an A site and the B site of the ceramic material includes a rare earth element, wherein (an amount of the rare earth element substitutionally solid-solved in the A site)/(an amount of the rare earth element substitutionally solid-solved in the B site) is 0.75 or more and 1.25 or less. The amount of the element acting as the donor in the B site is 0.05 to 0.3 atm % relative to a main component element of the B site.
Public/Granted literature
- US11887785B2 Multilayer ceramic capacitor and ceramic material powder Public/Granted day:2024-01-30
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