Patent ID: 6781732
Filing Date: 2004-08-24
Classification: B81B,G02B,Y10S

Abstract:
A micromirror actuator comprising:a substrate having a first penetration hole penetrating the substrate; a frame having a second penetration hole penetrating the frame, disposed inside the first penetration hole of the substrate, and connected with the substrate by first and second torsion bars formed to be bilateral symmetric around the frame; a micromirror disposed inside the second hole of the frame and connected with the frame by third and fourth torsion bars formed to be back and forth symmetric around the micromirror; first and second interdigitated cantilevers located between the substrate and the frame and protrudely formed from an inner wall of the first penetration hole to inside of the second penetration hole to be bilateral symmetric; third and fourth interdigitated cantilevers located between the substrate and the frame, protrudely formed from an inner wall, of the first penetration hole to inside of the second penetration hole to be back and forth symmetric to the first and second interdigitated cantilevers; first and second interconnection lines respectively formed on the first and second interdigitated cantilevers and connected with each other, third and fourth interconnection lines respectively formed on the third and fourth interconnection lines to be connected with each other and having a current flow direction opposite to a current flow direction flowing through the first and second interconnection lines, and fifth and sixth interconnection lines that are bilateral symmetric to an imaginary line connecting the third torsion bar and the fourth torsion bar and respectively formed on the micromirror such that currents having opposite directions flow; first to fourth connecting bars connecting the first to fourth interdigitated cantilevers with the frame respectively; and first and second magnets respectively installed outside the substrate to be bilateral symmetric to the substrate and having different polarities from each other.