发明名称 |
Method of manufacturing a multi-layered piezoelectric |
摘要 |
A multi-layered piezoelectric device includes a plurality of piezoelectric portions and a plurality of electrodes electrically connected to the piezoelectric portions that are formed in layers on a ceramic substrate. A first piezoelectric portion is made of a piezoelectric ceramic composition containing Ni in an amount of 0.08 to 0.31% by mass (in terms of NiO), and second and upper piezoelectric portions are made of a piezoelectric ceramic composition of higher Ni content than in the first piezoelectric portion. An electrode is provided at least between the first piezoelectric portion and the second piezoelectric portion.
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申请公布号 |
US7484278(B2) |
申请公布日期 |
2009.02.03 |
申请号 |
US20050033785 |
申请日期 |
2005.01.12 |
申请人 |
NGK INSULATORS, LTD. |
发明人 |
KASHIWAYA TOSHIKATSU;KITAGAWA MUTSUMI |
分类号 |
H01L41/22;H01L41/00;H01L41/083;H01L41/09;H01L41/187 |
主分类号 |
H01L41/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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