Patent ID: 6696343
Filing Date: 2004-02-24
Classification: B81B,H01G,Y10S

Abstract:
A method of fabricating a micro-electromechanical(MEM) varactor comprising the steps of:a) depositing a first dielectric layer on a first substrate, the first dielectric layer having at least one cavity etched therein, filling and planarizing the at least one cavity with sacrificial material; b) forming a movable beam in the at least one cavity; c) depositing a second dielectric layer on the first substrate and forming a plurality of conductive fins within the second dielectric layer, coupling the conductive fins to the moveable beam; d) forming a plurality of cavities on a first dielectric deposited on a second substrate, filling and planarizing the plurality of cavities with sacrificial material; e) depositing a second dielectric layer on the first dielectric placed on the second substrate, filling the plurality of cavities with conductive material to form fixed electrodes between the cavities; f) forming raised contact pads surrounding the fixed electrodes; g) removing the sacrificial material from all the cavities to release the movable beam and the fixed electrodes; and h) dicing the first substrate and joining the second substrate to the diced first substrate while aligning the movable beam in the first substrate with the fixed electrodes in the second substrate.