Patent ID: 7863069
Filing Date: 2011-01-04
Classification: B81B,B81C,H03H

Abstract:
1. A method of forming a MEMS resonator, the method comprising: providing a substrate comprising single crystal silicon; before fabricating circuitry, forming an electrode in a first portion of the substrate; after forming the electrode, fabricating the circuitry on a second portion of the substrate; and after fabricating the circuitry, forming a resonating element from a portion of the substrate, the resonating element adjacent to the electrode, the electrode and the resonating element forming a variable capacitor, the resonating element configured to move relative to the electrode, the circuitry being in communication with the electrode for detecting capacitance of the variable capacitor, one portion of the circuitry formed in a top layer of the substrate, the top layer substantially co-planar with the resonating element.