Patent ID: 9046541
Filing Date: 2015-06-02
Classification: G01C,G01P,H03H

Abstract:
1. A method for producing a disk resonator gyroscope comprising: providing a base substrate; providing a handle wafer with a release hole; bonding a release wafer to the handle wafer; bonding a resonator wafer to the release wafer; etching the resonator wafer to form a disk resonator, the disk resonator having an outer edge and a central pillar, and to form a sense electrode and a drive electrode, the sense and drive electrodes outside the outer edge of the disk resonator and each of the sense and the drive electrodes having a surface facing the outer edge of the disk resonator; selectively applying a conductive film onto the disk resonator such that the conductive film is on a side of the disk resonator opposite the release wafer, on the outer edge of the disk resonator, and on the surfaces of the sense and drive electrodes that are facing the outer edge of the disk resonator; selectively applying a conductive metal onto the sense and drive electrodes and onto the central pillar of the disk resonator; bonding the sense and drive electrodes and the central pillar of the disk resonator to the base substrate; and releasing the handle wafer by introducing a dry release agent into the release hole such that it undercuts the release wafer.