发明申请
- 专利标题: PIEZOELECTRIC ACTUATOR, LIQUID DISCHARGE HEAD, AND RECORDING DEVICE
- 专利标题(中): 压电致动器,液体放电头和记录装置
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申请号: US14002365申请日: 2012-03-27
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公开(公告)号: US20130335486A1公开(公告)日: 2013-12-19
- 发明人: Naoki Kobayashi , Takahiro Nakamura
- 申请人: Naoki Kobayashi , Takahiro Nakamura
- 申请人地址: JP Kyoto
- 专利权人: Kyocera Corporation
- 当前专利权人: Kyocera Corporation
- 当前专利权人地址: JP Kyoto
- 优先权: JP2011-165649 20110728
- 国际申请: PCT/JP2012/057897 WO 20120327
- 主分类号: B41J2/045
- IPC分类号: B41J2/045 ; H01L41/047
摘要:
A piezoelectric actuator has a satisfactory electrical connection of a common electrode and a surface electrode without increasing the size of the piezoelectric actuator, as well as a liquid discharge head and a recording device. The piezoelectric actuator includes: a ceramic substrate which is long in one direction and includes a vibrating plate, a common electrode disposed on the vibrating plate and a piezoelectric ceramic layer disposed on the common electrode and having a plurality of first through holes connected to the common electrode; a plurality of individual electrodes disposed in a region of the piezoelectric ceramic layer opposed to the common electrode; and a plurality of first surface electrodes respectively disposed inside a plurality of the first through holes in the piezoelectric ceramic layer and on a circumference of a plurality of the first through holes.
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