CMOS: compatible wafer bonding for MEMS and wafer-level 3D integration |
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Authors: | Viorel Dragoi Eric Pabo Jürgen Burggraf Gerald Mittendorfer |
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Affiliation: | 1. EV Group, DI E. Thallner Str. 1, 4782, St. Florian/Inn, Austria 2. EV Group Inc, 7700 S. River Parkway, Tempe, AZ, 85284, USA
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Abstract: | Wafer bonding became during past decade an important technology for MEMS manufacturing and wafer-level 3D integration applications. The increased complexity of the MEMS devices brings new challenges to the processing techniques. In MEMS manufacturing wafer bonding can be used for integration of the electronic components (e.g. CMOS circuitries) with the mechanical (e.g. resonators) or optical components (e.g. waveguides, mirrors) in a single, wafer-level process step. However, wafer bonding with CMOS wafers brings additional challenges due to very strict requirements in terms of process temperature and contamination. These challenges were identified and wafer bonding process solutions will be presented illustrated with examples. |
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