Invention Grant
US08405285B2 Piezoelectric device, piezoelectric actuator having the same, liquid discharge apparatus, and power generating apparatus
有权
压电元件，具有该压电元件的压电致动器，液体排出装置和发电装置
- Patent Title: Piezoelectric device, piezoelectric actuator having the same, liquid discharge apparatus, and power generating apparatus
- Patent Title (中): 压电元件，具有该压电元件的压电致动器，液体排出装置和发电装置
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Application No.: US12795096Application Date: 2010-06-07
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Publication No.: US08405285B2Publication Date: 2013-03-26
- Inventor: Hiroyuki Kobayashi , Yukio Sakashita
- Applicant: Hiroyuki Kobayashi , Yukio Sakashita
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2009-137091 20090608
- Main IPC: H01L41/187
- IPC: H01L41/187
Abstract:
A piezoelectric device which includes a piezoelectric body having piezoelectricity and a pair of electrodes for applying an electric field to the piezoelectric body in a predetermined direction in which a piezoelectric strain constant d33 (pm/V) and a relative pemittivity ε33 of the piezoelectric body satisfy Formulae (1) and (2) below. This makes the piezoelectric device excellent both in transmission and reception capabilities and appropriate for use as a piezoelectric actuator, a sensor, an ultrasonic sensor, or a power generating device. 100 12√ε33 (2).
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