Patent ID: 8569091

Claim:
A method of manufacturing a MEMS switch comprising: forming MEMS structures in a lower and upper cavity, which are connected by a via formed through the MEMS structures and are temporarily filled with a sacrificial material, wherein the forming the MEMS structures comprises: forming a first electrode layer on a lower layer of the sacrificial material; forming a first dielectric layer on the first electrode layer; forming a second electrode layer on the first dielectric layer forming a first insulator layer on a surface of the first electrode layer; and forming a second insulator layer on the second electrode layer; forming a second dielectric layer surrounding portions of the lower and upper cavity and over the MEMS structures; opening a vent hole in the second dielectric layer on a side of the MEMS structures over the lower cavity; stripping the sacrificial material to form a void about the MEMS structures using a dry or wet etchant; and sealing the vent hole with a capping material.