Patent ID: 8089194

Claim:
An electrostatic acting device comprising: a first electrode section ( 20 , 20 a ) including a first electrode ( 22 , 22 a , 22 b , 22 c ); and a second electrode section ( 10 , 10 a , 10 b , 10 c , 30 ) provided to be opposed to said first electrode section at a prescribed distance and including an electret film ( 12 , 12 a , 12 b ) capable of storing charges and a first conductive layer ( 13 , 13 a , 13 b , 33 ) formed on a prescribed region of an upper surface of said electret film, wherein a surface of said electret film on a region formed with said first conductive layer is convexed, and said first conductive layer and a convex portion of the surface of said electret film are formed in substantially the same shape in plan view.