Patent ID: 6813061
Filing Date: 2004-11-02
Classification: G02B

Abstract:
An electrostatic machine element comprising:a displaceable or deformable first electrode; a second electrode oppositely arranged to said first electrode; a first dielectric film formed at one side of said first electrode opposed to said second electrode; and a second dielectric film formed at one side of said second electrode opposed to said first electrode, said first electrode being displaced or deformed in a direction perpendicular to said second electrode when a voltage is applied between said first and second electrodes; and said second dielectric film including dielectric material of which a mobility showing a degree of movement of an electric charge depends on a polarity of said electric charge, the electric charge existing at a surface of said second dielectric film, being aparted from there and moved by an electric field between said first and second electrodes; wherein an edge of said first dielectric film, an edge of said first electrode and another side of said first electrode are opened so that said electric charge existing at the surface of said first dielectric film is movable to said first electrode via the edge of said first dielectric film, due to an electric field between said first and second electrodes.