Abstract:
A MEMS structure and methods of manufacture. The method includes forming a sacrificial metal layer at a same level as a wiring layer, in a first dielectric material. The method further includes forming a metal switch at a same level as another wiring layer, in a second dielectric material. The method further includes providing at least one vent to expose the sacrificial metal layer. The method further includes removing the sacrificial metal layer to form a planar cavity, suspending the metal switch. The method further includes capping the at least one vent to hermetically seal the planar cavity.
Abstract:
Processes for improving adhesion of films to semiconductor wafers and a semiconductor structure are provided. By implementing the processes of the invention, it is possible to significantly suppress defect creation, e.g., decrease particle generation, during wafer fabrication processes. More specifically, the processes described significantly reduce flaking of a TaN film from edges or extreme edges (bevel) of the wafer by effectively increasing the adhesion properties of the TaN film on the wafer. The method increasing a mol percent of nitride with respect to a total tantalum plus nitride to 25% or greater during a barrier layer fabrication process.
Abstract:
Vertical integrated MEMS switches, design structures and methods of fabricating such vertical switches is provided herein. The method of manufacturing a MEMS switch, includes forming at least two vertically extending vias in a wafer and filling the at least two vertically extending vias with a metal to form at least two vertically extending wires. The method further includes opening a void in the wafer from a bottom side such that at least one of the vertically extending wires is moveable within the void.