Patent ID: 7987714
Filing Date: 2011-08-02
Classification: G01C,Y10T

Abstract:
1. A method of manufacturing a disc resonator gyroscope (DRG) that produces improved geometric symmetry of the gyroscope, comprising: forming a resonator device wafer; forming a substrate base wafer having a patterned metal bonding layer on one surface thereof, the patterned metal bonding layer having a first symmetry; bonding said resonator device wafer to said patterned metal bonding layer; etching said resonator device wafer in accordance with a pattern having a second symmetry to remove regions of material from said resonator device wafer, said second symmetry having a relationship to said first symmetry; and said first and second symmetries enhancing thermal symmetry in said resonator device wafer during said etching operation to reduce geometric asymmetry in said resonator device wafer during said etching operation.