Patent ID: 6858458

Claim:
A method for making a contactless acceleration switch, comprising in combination: implanting a source, a drain, and a threshold adjustment channel in a substrate layer, and wherein the threshold adjustment channel is located substantially between the source and the drain; forming at least two silicon dioxide insulator posts on the substrate layer, and wherein the source, the drain, and the threshold adjustment channel are located substantially between the at least two insulator posts; forming a first sacrificial layer on the substrate layer substantially between the at least two insulator posts; forming a mass on the first sacrificial layer; forming a second sacrificial layer shaped to provide a pattern for forming a spring; forming the spring on the second sacrificial layer; removing the first sacrificial layer and the second sacrificial layer, wherein the at least two insulator posts provide an interface between the substrate layer and the spring, and wherein the spring holds the mass substantially above the substrate layer; and forming a gate insulating layer.