PRESSURE LEVEL ADJUSTMENT IN A CAVITY OF A SEMICONDUCTOR DIE
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United States of America Patent
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Issued Date -
Aug 14, 2014
app pub date -
Feb 11, 2013
filing date -
Feb 11, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A semiconductor die (20) includes a substrate (30) and microelectronic devices (22, 26) located at a surface (32) of the substrate (30). A cap (34) is coupled to the substrate (30), and the microelectronic device (22) is positioned in the cavity (24). An outgassing material structure (36) is located within a cavity (24) between the cap (34) and the substrate (30). The outgassing material structure (36) releases trapped gas (37) to increase the pressure within the cavity (24) from an initial pressure level (96) to a second pressure level (94). The cap (34) may include another cavity (28) containing another microelectronic device (26). A getter material (42) may be located within the cavity (28). The getter material (42) is activated to absorb residual gas (46) in the cavity (28) and decrease the pressure within the cavity (28) from the initial pressure level (96) to a third pressure level (92).
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