Patent ID: 7701155

Claim:
A method for driving a micro-oscillation element, the element comprising: a movable section, a frame, a connecting section that connects the movable section and the frame and defines an axis of rotation for the rotational operation of the movable section with respect to the frame, a first comb tooth-shaped electrode and a second comb tooth-shaped electrode for generating a driving force for rotational operation, and a third comb tooth-shaped electrode and a fourth comb tooth-shaped electrode for generating a driving force for rotational operation at a position closer to the axis of rotation than the first and second comb tooth-shaped electrodes; wherein the driving method comprises: a first step for causing the movable section to perform rotational operation in a first direction by generating an electrostatic attraction between the first comb tooth-shaped electrode and the second comb tooth-shaped electrode, as well as generating an electrostatic attraction between the third comb tooth-shaped electrode and the fourth comb tooth-shaped electrode; and a second step for causing the movable section to perform rotational operation in a first direction by generating an electrostatic attraction, following the first step, between only the third comb tooth-shaped electrode and the fourth comb tooth-shaped electrode.