METHOD OF FABRICATING VERTICAL ACTUATION COMB DRIVES

摘要

A method of fabricating a vertical actuation comb drive first etches a cavity in a semiconductive wafer; then the comb structure is etched, and the fixed part of the structure is deformed by an induced strain, by techniques such as boron doping, by adding a metal layer or a fixed oxide, or a mechanical latch or an additional plate electrode. In a manner known in the art, application of a voltage across the fingers of the comb produces a deflection either tilting or a vertical movement in the moveable portion of the comb drive.