Patent ID: 8567041

Claim:
A method of fabricating a heated quartz crystal resonator comprising: depositing and patterning a top side electrode on a quartz wafer; depositing and patterning a top side heater on the quartz wafer; bonding the quartz wafer to a handle wafer with a temporary adhesive; grinding and polishing the quartz wafer to a thickness for a desired frequency; depositing and patterning a mask for forming vias; etching vias in the quartz wafer; depositing and patterning a via metal in the vias; depositing and patterning resistive temperature device metal on the quartz wafer; depositing and patterning a bottom side electrode metal on the quartz wafer; depositing and patterning a mesa on a base wafer; depositing and patterning a metal on the base wafer for both a seal ring, wiring, and a reflective coating; depositing and patterning a mask for a cap cavity in a cap wafer; etching the cap cavity; depositing and patterning a metal on the cap wafer; depositing and patterning metal seal layers on the cap wafer; bonding the quartz wafer to the base wafer; removing the handle wafer; and bonding the cap wafer to the base wafer.