Patent ID: 7062970

Claim:
A device having a vibrator that is driven electrostatically, the device comprising: a substrate; a vibrator movably supported by the substrate so as to vibrate in a predetermined direction, wherein the vibrator includes a frame portion having a planar frame shape; an in-frame fixed portion that is fixed to the substrate and located in an inner space surrounded by an inner peripheral portion of the frame portion; and a driving electrode for applying electrostatic force to the vibrator to drive the vibrator so that the vibrator vibrates in the predetermined direction, wherein the driving electrode comprises: a first driving electrode disposed to confront an outer peripheral portion of the vibrator; and a second driving electrode disposed on a first side of the in-frame fixed portion and disposed so as to confront the inner peripheral portion of the frame portion, the second driving electrode being further electrically connected to the first driving electrode to cooperatively apply the electrostatic force to the vibrator in a same direction as the first driving electrode, wherein at least one of a portion of the in-frame fixed portion located opposite to the first side on which the second driving electrode is disposed, and a side portion of the inner peripheral portion of the frame portion confronting the second side portion of the in-frame fixed portion is designed to have an unevenly-shaped portion.