Patent ID: 7751108

Claim:
A micro-actuation element, comprising: a movable unit, a support frame and a coupler for connecting the movable unit and the support frame, the movable unit, the support frame and the coupler being integrally formed in a material substrate with a multi-layer structure comprising a plurality of electroconductive layers and insulation layers arranged between the electroconductive layers, the electroconductive layers including a core conduction layer, the movable unit comprising a first structure originating in the core conduction layer, the frame comprising a second structure originating in the core conduction layer and a third structure originating in an electroconductive layer connected to the core conduction layer via the insulation layer in the material substrate, at least a part of the third structure and a part of the second structure being connected to each other via a conduction plug passing through the insulation layer intervening between the third structure and the second structure, the coupler comprising a plurality of electrically separated torsion bars originating in the core conduction layer and continuously connected to the first structure and the second structure.