发明申请
- 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，压电元件和压电元件的振动波电机
-
申请号： US13408564申请日： 2012-02-29
-
公开(公告)号： US20120228998A1公开(公告)日： 2012-09-13
- 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 Sendai-shi JP Tokyo
- 专利权人： CANON KABUSHIKI KAISHA,NIHON CERATEC CO., LTD.,TAIHEIYO CEMENT CORPORATION
- 当前专利权人： CANON KABUSHIKI KAISHA,NIHON CERATEC CO., LTD.,TAIHEIYO CEMENT CORPORATION
- 当前专利权人地址： JP Tokyo JP Sendai-shi JP Tokyo
- 优先权： JP2011-052510 20110310
- 主分类号： H02N2/16
- IPC分类号： H02N2/16 ; H01L41/047 ; H01L41/18 ; H01L41/083
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
