1988-02-18
1991-05-28
James, Andrew J.
357 72, H01L 2302
Patent
active
050198920
ABSTRACT:
A chip carrier (2) for use with an integrated circuit chip (4) has an accumulator means (38) provided in an enclosed gel filled chip receiving opening (14). The accumulator means (38) and the gel (34) cooperate to fill the opening (14), such that as the gel (34) expands, the accumulator means (38) is forced to contract. This cooperation insures that the forces applied to the chip carrier (2) due to the expansion of the gel (34) will not be great enough to cause the failure of the chip carrier (2). In the alternative, as the gel (34) contracts, the accumulator means (38) expands, insuring that a constant pressure is applied to the gel (34), thereby preventing the unrestrained motion of the gel (34) in the chip receiving opening (14). Consequently, the accumulator means (38) and the gel (34) cooperate to insure that the chip carrier (2) and the chip (4) therein will be reliable in any type of environment.
REFERENCES:
patent: 4079511 (1978-03-01), Grabbe
patent: 4147889 (1979-04-01), Andrews
patent: 4339768 (1982-07-01), Keller
patent: 4410905 (1983-10-01), Grabbe
patent: 4426769 (1984-01-01), Grabbe
Document Entitled "A Premolded Chip Carrier W/Compliant Leads" by D. Grabbe of AMP Incorporated 1977.
AMP Document P217-79 Entitled "Automated Packaging of a Premolded Chipcarrier" by Grabbe, Keizer, 1979.
AMP Document Entitled "Premolded Integrated Circuit Packaging Technology" by D. Grabbe.
AMP Incorporated
Bowers Courtney A.
James Andrew J.
Wolstoncroft Bruce J.
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