Electricity: conductors and insulators – Boxes and housings – Hermetic sealed envelope type
Reexamination Certificate
2005-04-05
2005-04-05
Reichard, Dean A. (Department: 2831)
Electricity: conductors and insulators
Boxes and housings
Hermetic sealed envelope type
C361S761000, C361S763000
Reexamination Certificate
active
06875921
ABSTRACT:
A capacitive interposer (caposer) is disposed inside an integrated circuit package between a die and an inside surface of the package. Conductive layers within the caposer constitute a bypass capacitor. In a through-hole caposer, micro-bumps on the die pass through through-holes in the caposer and contact corresponding landing pads on the package. As they pass through the caposer, power and ground micro-bumps make contact with the plates of the bypass capacitor. In a via caposer, power and ground micro-bumps on the die are coupled to power and ground landing pads on the package as well as to the plates of the bypass capacitor by power and ground vias that extend through the caposer.
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Oliva Carmelo
Reichard Dean A.
Wallace T. Lester
Xilinx , Inc.
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