Patent ID: 7405635

Claim:
An MEMS switch comprising: a substrate; a conductive beam formed on a surface of the substrate; and a three-layer structure beam formed on the surface of the substrate and disposed to be opposed to the conductive beam, wherein the three-layer structure beam includes a first conductive layer, a second conductive layer and a dielectric layer sandwiched between the first conductive layer and the second conductive layer, wherein the first conductive layer is opposed to the conductive beam, wherein at least one of the conductive beam and the three-layer structure beam is displaced on a plane parallel to the substrate due to an electrostatic force so that the conductive beam and the first conductive layer can come into contact with each other, and wherein a conductive path is formed between the conductive beam and the second conductive layer when the conductive beam and the first conductive layer are in contact with each other.