发明授权
- 专利标题: Multilayer ceramic capacitor and manufacturing method thereof
- 专利标题(中): 多层陶瓷电容器及其制造方法
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申请号: US11193284申请日: 2005-07-28
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公开(公告)号: US07057876B2公开(公告)日: 2006-06-06
- 发明人: Yoshihiro Fujioka , Kiyoshi Matsubara
- 申请人: Yoshihiro Fujioka , Kiyoshi Matsubara
- 申请人地址: JP Kyoto
- 专利权人: Kyocera Corporation
- 当前专利权人: Kyocera Corporation
- 当前专利权人地址: JP Kyoto
- 代理机构: Hogan & Hartson, LLP
- 优先权: JP2004-221993 20040729; JP2004-221994 20040729
- 主分类号: H01G4/06
- IPC分类号: H01G4/06 ; C04B35/46
摘要:
A multilayer ceramic capacitor comprises a dielectric layer and an internal electrode layer that are alternately laminated. Barium titanate particles containing an alkaline earth metal component except for Ba in a proportion of not more than 0.2 atomic % (BMTL), and barium titanate particles containing an alkaline earth metal component except for Ba in a proportion of not less than 0.4 atomic % (BMTH) coexist in the dielectric layer in an area ratio of BMTL to BMTH of 0.1 to 9. This provides excellent reliability of capacity temperature characteristic and high-temperature load lifetime, if the dielectric layer is thinned.
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