Invention Grant
- Patent Title: Integrated MEMS devices with controlled pressure environments by means of enclosed volumes
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Application No.: US13541306Application Date: 2012-07-03
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Publication No.: US08350346B1Publication Date: 2013-01-08
- Inventor: Kegang Huang , Martin Lim , Steven S. Nasiri
- Applicant: Kegang Huang , Martin Lim , Steven S. Nasiri
- Applicant Address: US CA Sunnyvale
- Assignee: Invensense, Inc.
- Current Assignee: Invensense, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Sawyer Law Group, P.C.
- Main IPC: H01L29/84
- IPC: H01L29/84

Abstract:
An integrated MEMS device comprises a wafer where the wafer contains two or more cavities of different depths. The MEMS device includes one movable structure within a first cavity of a first depth and a second movable structure within a second cavity of a second depth. The cavities are sealed to maintain different pressures for the different movable structures for optimal operation. MEMS stops can be formed in the same multiple cavity depth processing flow. The MEMS device can be integrated with a CMOS wafer.
Information query
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