Patent ID: 8164812

Claim:
An optical scanning mirror, comprising: a stationary frame; a movable frame which is coupled to the stationary frame through two first hinges which are formed to configure a first shaft, and is rotatable around the first shaft; a mirror unit which is coupled to the movable frame through two second hinges which are formed to configure a second shaft, and is swingable around the second shaft; a mirror face formed on a top face of the mirror unit to reflect a light beam incoming from outward; first comb electrodes which are formed at portions on faces of the movable frame and the stationary frame opposing each other where the first hinges are not formed so as to generate driving forces to swing the movable frame around the first shaft; second comb electrodes which are formed at portions on faces of the mirror unit and the movable frame opposing each other where the second hinges are not formed so as to generate driving forces to swing the mirror unit around the second shaft; and a supporting member which is provided on a bottom face of the movable frame disposed at an opposite side of the mirror face; wherein the movable frame is divided into at least a first region where the first comb electrodes and the second comb electrodes are formed and a second region where the second comb electrodes of the mirror unit are formed, wherein the first region and the second region are electrically insulated by trenches; and the first region and the second region are joined to the supporting member.