Microdevice assembly having a fine grain getter layer for maintaining vacuum

A microdevice assembly ( 20 ) that includes a device microstructure ( 22 ), a housing ( 30 ), and a fine grain getter layer ( 40 ). The housing ( 30 ) has a base portion ( 32 ) and a lid ( 34 ). The device microstructure ( 22 ) is attached to the base portion ( 32 ) and the lid ( 34 ) is hermeticall...

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Bibliographische Detailangaben
Hauptverfasser: Field, Cheryl, Wang, Joe, Pfeifer, Michael
Format: Patent
Sprache:eng
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Zusammenfassung:A microdevice assembly ( 20 ) that includes a device microstructure ( 22 ), a housing ( 30 ), and a fine grain getter layer ( 40 ). The housing ( 30 ) has a base portion ( 32 ) and a lid ( 34 ). The device microstructure ( 22 ) is attached to the base portion ( 32 ) and the lid ( 34 ) is hermetically sealed to the base portion ( 32 ). The housing ( 30 ) defines a cavity ( 38 ) surrounding the device microstructure ( 22 ). The fine grain getter layer ( 40 ) is on an interior side ( 42 ) of the lid ( 34 ) for maintaining a vacuum in the cavity ( 38 ) surrounding the device microstructure ( 22 ). The lid ( 34 ) may be made of metal or have at least a metallic surface in the region where the fine grain getter layer ( 40 ) is applied. The fine grain getter layer ( 40 ) has a sub-micron grain size. There is also a method for making the microdevice assembly ( 20 ).