Patent ID: 6445107
Filing Date: 2002-09-03
Classification: B82Y,G11B,H02N

Abstract:
A single-stage microactuator comprising:a substrate; a fixed plate electrode disposed at a central portion of the substrate; a rectalinear stage having first and second side directions, said rectalinear being located above the fixed plate electrode, the second direction being perpendicular to the first direction; a plurality of actuating frame parts provided corresponding to the two first direction of sides and the two second direction of sides in regions surrounding the stage, wherein each actuating frame includes a plurality of actuating frames arranged parallel to a corresponding side of the stage adjacent to each surrounding region; a plurality of comb normal directional deformable spring parts, each disposed between each side of the stage and the inner part of each actuating frame part, wherein each comb normal directional deformable spring part includes a plurality of spring members extending in a direction perpendicular to a corresponding side of the stage, a plurality of fixed frame parts, each including a plurality of fixed frames alternately arranged parallel to the plurality of actuating frames of a corresponding actuating frame part of each surrounding region; an actuating comb electrode provided in each actuating frame of the actuating frame part, the actuating comb electrode extending in a direction perpendicular to the side of the stage corresponding to each surrounding region, a fixed comb electrode arranged alternately in parallel to the actuating comb electrode in each fixed frame of the fixed frame part; and a plurality of comb directional deformable spring parts disposed on one side of each actuating frame part opposite the stage and the opposing side thereof for providing an elastic recovery force in a direction perpendicular to one side of the stage corresponding to each of the surrounding regions.