Patent ID: 11920932
Assignee: NATIONAL UNIVERSITY OF DEFENSE TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A wafer-level assembly method for a micro hemispherical resonator gyroscope, comprising the following steps:
step 1, forming at least two through glass substrate alignment holes at edges of each glass substrate of a plurality of glass substrates with a plurality of micro hemispherical resonators;
step 2, aligning the plurality of glass substrates obtained after being processed in step 1 with a wafer fixture, respectively, and fixing the plurality of glass substrates on the wafer fixture by using an alignment pin to align the plurality of glass substrates and applying a pressure by using a flat plate;
step 3, removing the flat plate and the alignment pin sequentially, and performing a removal processing on the plurality of glass substrates to obtain the plurality of micro hemispherical resonators fixed on the wafer fixture;
step 4, after an overall structure of the wafer fixture and the plurality of micro hemispherical resonators obtained in step 3 is cleaned, coating an entire surface of the wafer fixture to add at least one metal film on an inner concave surface of each micro hemispherical resonator of the plurality of micro hemispherical resonators;
step 5, placing the wafer fixture in parallel with an electrode jig wafer, wherein the plurality of micro hemispherical resonators are mounted on the wafer fixture and a plurality of planar electrode substrates are fixed on the electrode jig wafer, and fixedly connecting the plurality of micro hemispherical resonators to the plurality of planar electrode substrates after an alignment;
step 6, releasing a fixed connection between the each micro hemispherical resonator and a fixed cylinder, and a fixed connection between the plurality of planar electrode substrates and the electrode jig wafer, respectively, and sequentially removing the wafer fixture and the electrode jig wafer; and
step 7, cleaning an overall structure of the plurality of micro hemispherical resonators and the plurality of planar electrode substrates obtained in step 6 to obtain the micro hemispherical resonator gyroscope.