Patent ID: 8149497
Filing Date: 2012-04-03
Classification: B81B,B81C,G02B

Abstract:
1. A microelectromechanical systems device comprising: a substrate having a first electrode layer formed thereon; a second electrode layer formed over the first electrode layer and spaced apart from the first electrode layer by a cavity; at least one support structure formed below a portion of the second electrode, the at least one support structure comprising side surfaces surrounding the support structure, wherein the at least one support structure is configured to support the second electrode layer over the cavity; and a protective material surrounding the at least one support structure to isolate the at least one support structure from the cavity, wherein the protective material comprises a side cover that covers the side surfaces and a top cover that covers a top surface of the support structure, and wherein an outer diameter of the top cover of the protective material is greater than an outer diameter of the side cover of the protective material, and wherein a portion of the protective material is positioned between the portion of the second electrode layer and the top surface of the support structure, wherein the protective material is selected from the group of a self-planarizing material, photoresist, and spin-on dielectric.