Patent
1981-06-11
1990-12-04
Larkins, William D.
357 29, H01L 2308
Patent
active
049757628
ABSTRACT:
A low alpha-particle-emitting ceramic composite cover which when used in a ceramic integrated circuit package to encapsulate an integrated circuit device, reduces soft errors caused by alpha-particles emitted from the ceramic material. An alpha-particle-absorbing barrier layer is attached to the major portion of the interior surface of the ceramic cover to absorb alpha-particles emitted by the ceramic material. The barrier layer may be an organic polymeric material or an inorganic high purity material. Preferably the barrier layer is a polyimide film which is attached to the ceramic cover by a glass sealant material. Various constructions of the composite cover and ceramic integrated circuit packages utilizing the composite cover are disclosed.
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Stradley Norman H.
Woolley James A.
Chapman Ernest F.
General Electric Ceramics, Inc.
Larkins William D.
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