Integrated all-Si capacitive microgyro with vertical differential sense and control and process for preparing an integrated all-Si capacitive microgyro with vertical differential sense
First Claim
1. A method of manufacturing a cloverleaf microgyroscope containing an integrated post comprising:
- a) attaching a post wafer to a resonator wafer,b) forming a bottom post from the post wafer,c) attaching the resonator wafer to a base wafer, wherein the bottom post fits into a post hole in the base wafer,d) forming a top post from the resonator wafer, wherein the bottom and top post are formed symmetrically around the same axis,e) preparing a cap with backside metallization, andf) attaching a cap wafer on top of the base wafer.
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Abstract
The present invention relates to a method of manufacturing a cloverleaf microgyroscope containing an integrated post comprising: attaching a post wafer to a resonator wafer, forming a bottom post from the post wafer being attached to the resonator wafer, attaching the resonator wafer to a base wafer, wherein the bottom post fits into a post hole in the base wafer, forming a top post from the resonator wafer, wherein the bottom and top post are formed symmetrically around the same axis, preparing a cap with backside metallization, and attaching a cap wafer on top of the base wafer. The present invention relates further to a gyroscope containing an integrated post with on or off-chip electronics.
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Citations
20 Claims
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1. A method of manufacturing a cloverleaf microgyroscope containing an integrated post comprising:
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a) attaching a post wafer to a resonator wafer, b) forming a bottom post from the post wafer, c) attaching the resonator wafer to a base wafer, wherein the bottom post fits into a post hole in the base wafer, d) forming a top post from the resonator wafer, wherein the bottom and top post are formed symmetrically around the same axis, e) preparing a cap with backside metallization, and f) attaching a cap wafer on top of the base wafer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A cloverleaf micro gyroscope with off-chip electronics comprising:
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a post wafer attached to a resonator wafer; a top post and a bottom post formed from the post wafer, wherein the bottom and top post are formed symmetrically around the same axis; a base wafer attached to the resonator wafer, wherein the bottom post fits into a post hole in the base wafer; a cap with backside metallization attached to the base wafer.
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Specification