An Integrated Wafer-Scale Packaging Process for MEMS
Thomas W. Kenny, Rob N. Candler, Huimou J. Li, Woo‐Tae Park, Junghwa Cho, King Ho Holden Li, Aaron Partridge, G. Yama, M. Lutz
Abstract
Thomas W. Kenny, Rob N. Candler, Huimou J. Li, Woo‐Tae Park, Junghwa Cho, King Ho Holden Li, Aaron Partridge, G. Yama, M. Lutz
Abstract
Packaging is well known to impose significant cost, performance and fabrication constraints on MEMS devices. We have developed a wafer-scale, integrated packaging process which enables a released MEMS device to be sealed within a thick layer of epi-polysilicon. This encapsulation may be tailored to withstand conventional dicing saws, pick/place chip handling equipment, and even high-pressure injection molding for plastic DIP packages. This architecture can be adapted to a variety of MEMS devices, and is compatible with integrated electronics. This paper will describe this packaging technique and discuss applications.
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Packaging is well known to impose significant cost, performance and fabrication constraints on MEMS devices. We have developed a wafer-scale, integrated packaging process which enables a released MEMS device to be sealed within a thick layer of epi-polysilicon. This encapsulation may be tailored to withstand conventional dicing saws, pick/place chip handling equipment, and even high-pressure injection molding for plastic DIP packages. This architecture can be adapted to a variety of MEMS devices, and is compatible with integrated electronics. This paper will describe this packaging technique and discuss applications.
Key concepts: Wafer dicing, Microelectromechanical systems, Wafer-level packaging, Die preparation, Wafer, Chip-scale package, Wafer-scale integration, Fabrication