Piezoelectric/electrostrictive element
US6091182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1997 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/3493
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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 im…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.