Electrostrictive element
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United States of America Patent
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Jan 16, 2018
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app pub date -
May 28, 2015
filing date -
May 28, 2015
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Abstract
The present invention provides an electrostrictive element capable of preventing breakdown of a dielectric film. An electrostrictive element 1 includes a dielectric film 2 composed of an elastomer, a film electrode 3 formed inside a peripheral edge on at least one surface of the dielectric film 2 and capable of expanding and contracting so as to follow expansion and contraction of the dielectric film 2, and a frame 4 to keep the dielectric film 2 in an expansion state. The film electrode 3 includes portions 6, 7, 8 having a lower conductivity or a portion 9 having a higher rigidity than the other portion on a portion to be subjected to a greater total stress of a mechanical stress and an electrical stress than the other portion of the dielectric film 2.
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