Patent ID: 6864876

Claim:
A micro-mirror device for an image display apparatus, comprising: a substrate; a landing pad provided on the substrate; a pair of base electrodes provided on opposite sides of the landing pad; a pair of first posts that protrude from an upper surface of the landing pad, which are isolated from each other by a predetermined interval; a girder supported by the pair of first posts, which is operative to pivot toward sides of the base electrodes; a second post protruding from an upper surface of the girder; and a mirror supported by the second post, which reflects incident light, and receives power via the landing pad, wherein the mirror is pivoted toward the sides of the landing pad by an electrostatic attraction between the pair of base electrodes and the mirror, wherein the girder includes: a support plate for supporting the second post, the support plate having connecting portions which protrude from sides of the support plate in a direction parallel to a lengthwise direction of the pair of base electrodes and are point-symmetrical to each other on the basis of the second post; and a pair of springs which connect an upper surface of each of the pair of first posts to each of the connecting portions, wherein the pair of springs are elastically deformed when the mirror is vertically inclined by the electrostatic attraction between the mirror and the base electrodes.