Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1997-11-06
2000-07-18
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310331, 310359, 310365, 310324, H01L 4108
Patent
active
060911824
ABSTRACT:
Disclosed is a piezoelectric/electrostrictive element composed of an actuator section of a uni-morph type comprising a main actuator element including a piezoelectric/electrostrictive layer and a pair of electrodes formed on a first principal surface of the piezoelectric/electrostrictive layer; a vibrating section which contacts with a second principal surface of the piezoelectric/electrostrictive layer for supporting the main actuator element; and a fixed section for supporting the vibrating section in a vibrative manner; wherein a relationship of y=ax is satisfied, and an expression of 1/10.ltoreq.a.ltoreq.100 is satisfied provided that x represents a distance between the pair of electrodes (1 .mu.m.ltoreq.x.ltoreq.200 .mu.m), and y represents a thickness of the piezoelectric/electrostrictive layer (1 .mu.m.ltoreq.y.ltoreq.100 .mu.m). Accordingly, it is possible to greatly increase the relative displacement amount between the no-voltage-loaded state and the voltage-applied state and the relative displacement amount between the states in which mutually opposite electric fields are applied, making it possible to realize easy control when the element is utilized for actuators and improvement in sensitivity when the element is utilized for sensors.
REFERENCES:
patent: 2565514 (1951-08-01), Pajes
patent: 2997922 (1961-08-01), Kaprelian
patent: 3114849 (1963-12-01), Poschenrieder
patent: 3252017 (1966-05-01), Bartels
patent: 3376092 (1968-04-01), Kushner et al.
patent: 3698793 (1972-10-01), Tellerman
patent: 4113360 (1978-09-01), Bauer et al.
patent: 5126615 (1992-06-01), Takeuchi et al.
patent: 5210455 (1993-05-01), Takeuchi et al.
patent: 5255016 (1993-10-01), Usui et al.
patent: 5319491 (1994-06-01), Selbrede
patent: 5430344 (1995-07-01), Takeuchi et al.
patent: 5592042 (1997-01-01), Takeuchi et al.
patent: 5767612 (1998-06-01), Takeuchi et al.
patent: 5771321 (1998-06-01), Stern
patent: 5862275 (1999-01-01), Takeuchi et al.
patent: 5953469 (1999-09-01), Zhou
Nanataki Tsutomu
Takahashi Masao
Takeuchi Yukihisa
Budd Mark O.
NGK Insulators Ltd.
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