Patent attributes
A microactuator has a fixed portion and a movable portion that is provided in such a way as to be movable relative to the fixed portion between a first position at which it is in contact with a predetermined portion of the fixed portion and a second position away from the first position. The fixed portion has a first electrode portion, the movable portion has a second electrode portion that can produce an electrostatic force between it and the first electrode portion by a voltage between it and the first electrode portion, and the first and second electrode portions are arranged in such a way that a first force that biases the movable portion in a direction toward the first position according to the electrostatic force created when the voltage is constant reaches a peak when the movable portion is at a third position between the first position and the second position.
