发明名称 |
Piezoelectric element, and piezoelectric actuator and vibration wave motor including piezoelectric element |
摘要 |
Provided is a piezoelectric element including: an electrode portion including a piezoelectric layer and an electrode layer that are laminated; and a non-electrode portion that is in contact with the electrode portion and includes a piezoelectric layer without an electrode layer, in which the non-electrode portion includes a region having a density smaller than a density of the piezoelectric layer of the electrode portion. |
申请公布号 |
US8614536(B2) |
申请公布日期 |
2013.12.24 |
申请号 |
US201213408564 |
申请日期 |
2012.02.29 |
申请人 |
MARUYAMA YUTAKA;SHIMADA AKIRA;INADA YUTAKA;MATSUMOTO MASASHI;ITOU YUU;CANON KABUSHIKI KAISHA;TAIHEIYO CEMENT CORPORATION;NIHON CERATEC CO., LTD. |
发明人 |
MARUYAMA YUTAKA;SHIMADA AKIRA;INADA YUTAKA;MATSUMOTO MASASHI;ITOU YUU |
分类号 |
H01L41/08 |
主分类号 |
H01L41/08 |
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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