Patent ID: 7411714

Claim:
A micromirror unit made from a laminate which includes a first conductive layer, a second conductive layer, and an insulating layer interposed between the first and second conductive layers, the micromirror unit comprising: a first frame including a frame body originating from the first conductive layer, an electrode base originating from the second conductive layer, and an insulating portion originating from the insulating layer; a mirror forming base originating from the same first conductive layer as the frame body of the first frame and provided with a mirror surface; and a first torsion connector originating from the same first conductive layer as the mirror forming base and the frame body of the first frame for connecting the frame body of the first frame to the mirror forming base, the first torsion connector defining a first axis about which the mirror forming base is rotated relative to the first frame; wherein the first torsion connector includes at least two torsion bars each having a first end connected to the mirror forming base and a second end connected to the frame body of the first frame, the first ends of said at least two torsion bars being spaced from each other by a first distance, the second ends of said at least two torsion bars being spaced from each other by a second distance which is smaller than the first distance; and wherein the electrode base of the first frame is formed with comb-teeth electrodes originating from the second conductive layer, the mirror forming base being also formed with comb-teeth electrodes originating from the same first conductive layer as the mirror forming base, the first torsion connector and the frame body of the first frame for operative cooperation with the comb-teeth electrodes of the electrode base.