发明申请
- 专利标题: MULTILAYER PIEZOELECTRIC ELEMENT
- 专利标题(中): 多层压电元件
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申请号: US11817570申请日: 2006-02-24
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公开(公告)号: US20090033179A1公开(公告)日: 2009-02-05
- 发明人: Atsushi Ito , Yoshiya Matsuno , Takahiko Ido , Haruhide Shikano , Shigeo Fukuyasu , Takuo Matsuyama
- 申请人: Atsushi Ito , Yoshiya Matsuno , Takahiko Ido , Haruhide Shikano , Shigeo Fukuyasu , Takuo Matsuyama
- 申请人地址: JP OGAKI-SHI JP OSAKA-SHI
- 专利权人: IBIDEN CO., LTD.,DAI NIPPON TORYO CO., LTD.
- 当前专利权人: IBIDEN CO., LTD.,DAI NIPPON TORYO CO., LTD.
- 当前专利权人地址: JP OGAKI-SHI JP OSAKA-SHI
- 优先权: JP2005-056223 20050301
- 国际申请: PCT/JP2006/303417 WO 20060224
- 主分类号: H01L41/083
- IPC分类号: H01L41/083
摘要:
A multilayer piezoelectric element 20 includes a plurality of piezoelectric layers 11 and a plurality of inner electrode layers 12 alternately stacked, a first outer electrode 18 that electrically couples together every other inner electrode layers 12 in the lamination direction, and a second outer electrode 19 that electrically couples together the remaining inner electrode layers 12. The piezoelectric layers 11 are obtained by molding and firing a mixture containing a Pb component, a Zr component, a Ti component, a Sr component, a Nb component, and a Zn component. When the piezoelectric layers 11 are each represented by general formula Pb(ZraTi1-a)O3+bSrO+cNbO2.5+dZnO, the relative amounts of the individual components, for example, satisfy the relationships a=0.51, b=2.0×10−2, c=1.50×10−2, d=0.5×10−2, and c/d=3.0.
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