Microstructures and high temperature isolation process for fabrication thereof

摘要

A method of fabricating released microelectromechanical and microoptomechanical structures having electrically isolating segments from single crystal silicon includes thermal oxidation steps. The structures are defined using a single mask patterning process, and the structure is partially thermally oxidized. This is followed by a second masking step which is used to define segments to be completely thermally oxidized, and a second oxidation step completes the fabrication of the isolating segment. Thereafter the structure is released from the underlying substrate.