Patent ID: 8375791

Claim:
A capacitive MEMS gyroscope, comprising a semiconductor substrate and a suspended composite wheel; wherein the semiconductor substrate centered to a rotation axis, comprises: a read-out circuitry; at least one bottom electrode disposed on top of the semiconductor substrate electrically connected to the read-out circuitry; at least one contact pad disposed on the top of the semiconductor substrate, electrically to the read-out circuitry; the composite wheel, partially made of dielectric film and configured in suspension above and in parallel to the semiconductor substrate and centered to the rotation axis, comprises: at least one top electrode disposed on the composite wheel, aligned vertically with one of the bottom electrode, electrically to the read-out circuitry; at least one circumferential spring arm centered to the rotation axis, physically bridging the composite wheel and the semiconductor substrate and consisting of at least one top electrode lead which electrically connects the top electrode to the contact pad on the semiconductor substrate.