发明授权
- 专利标题： Piezoelectric element, and piezoelectric actuator and vibration wave motor including piezoelectric element
- 专利标题（中）： 压电元件，以及包括压电元件的压电致动器和振动波马达
-
申请号： US13408564申请日： 2012-02-29
-
公开(公告)号： US08614536B2公开(公告)日： 2013-12-24
- 发明人: Yutaka Maruyama , Akira Shimada , Yutaka Inada , Masashi Matsumoto , Yuu Itou
- 申请人： Yutaka Maruyama , Akira Shimada , Yutaka Inada , Masashi Matsumoto , Yuu Itou
- 申请人地址： JP Tokyo JP Tokyo JP Sendai-shi
- 专利权人： Canon Kabushiki Kaisha,Taiheiyo Cement Corporation,Nihon Ceratec Co., Ltd.
- 当前专利权人： Canon Kabushiki Kaisha,Taiheiyo Cement Corporation,Nihon Ceratec Co., Ltd.
- 当前专利权人地址： JP Tokyo JP Tokyo JP Sendai-shi
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP2011-052510 20110310
- 主分类号： H01L41/08
- IPC分类号： H01L41/08
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.
公开/授权文献
信息查询
IPC分类:
