A micromirror for optical projection displays

In this paper we present a tilting micro mirror with a large mirror surface of up to 2.5 mm x 1.0 mm and a large rotation angle of +/- 10° as needed for optical projection displays. The mirror is driven by vertical comb-drive actuators which are realized by a combination of deep reactive ion etching (DRIE) and a buried mask to provide selfalignment of the stator and rotor fingers in a silicon on insulator (SOI) wafer. Measurement results are shown for various realized mirror designs