Patent ID: 7471440
Filing Date: 2008-12-30
Classification: G02B

Abstract:
1. A method of fabricating a tiltable micro mirror plate, comprising: forming a substrate comprising an upper surface and a hinge support post in connection with the upper surface; depositing a first solid sacrificial material over the substrate, wherein the first solid sacrificial material is selected from the group of amorphous carbon, polyarylene, polyarylene ether, and hydrogen silsesquioxane; planarizing the first sacrificial material by chemical mechanical polishing the sacrificial material to the same height as a top surface of the hinge support post; after planarizing the first sacrificial material, depositing one or more layers of structural materials over the first sacrificial material and over the top surface of the hinge support post; forming an opening in the one or more layers of structural materials, wherein the opening can provide access from outside to the first sacrificial material below the one or more layers of structural materials; and removing the first sacrificial material to form the tiltable micro mirror plate in connection with the hinge support post.