Patent ID: 7960272

Claim:
A method for fabricating a circuit component, comprising: providing a silicon substrate and a silicon-nitride layer over said silicon substrate; forming a sacrificial layer over said silicon-nitride layer; forming a first metal layer comprising a first portion over a top surface of said sacrificial layer and at a sidewall of said sacrificial layer, and a second portion over said silicon substrate but not over said sacrificial layer; forming a photoresist layer on said first metal layer, wherein an opening in said photoresist layer exposes said first and second portions of said first metal layer; after said forming said photoresist layer, forming a second metal layer over said first and second portions of said first metal layer, wherein said second metal layer comprises gold; after said forming said second metal layer, removing said photoresist layer; after said removing said photoresist layer, removing said first metal layer not under said second metal layer such that said first metal layer remains under said second metal layer; and after said removing said first metal layernot under said second metal layer, removing said sacrificial layer vertically under said remaining first metal layer and creating a void vertically under said remaining first metal layer.