PIEZOELECTRIC FILM AND PIEZOELECTRIC ELEMENT
Abstract:
Provided is a piezoelectric film including electrode layers on both surfaces of a piezoelectric layer which contains piezoelectric particles in a matrix containing a polymer material, in which it is possible to prevent operational failure due to dielectric breakdown between the electrode layers at an end part. The piezoelectric film includes a piezoelectric layer which contains piezoelectric particles in a matrix containing a polymer material, electrode layers which are provided on both surfaces of the piezoelectric layer, and protective layers which are provided on the electrode layers, in which the piezoelectric film further includes an edge surface sealing layer consisting of a material containing a resin, the edge surface sealing layer covering an edge surface of the piezoelectric film, and an inter-electrode distance on the edge surface of the piezoelectric film is 30 μm or more, and is 103% or more and less than 120% with respect to a thickness of the piezoelectric layer.
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