Metal working – Method of mechanical manufacture – Assembling or joining
Patent
1979-12-21
1981-09-15
Weisstuch, Aaron
Metal working
Method of mechanical manufacture
Assembling or joining
29583, 29591, 250492A, 324158T, H01L 2166, H01L 21423
Patent
active
042889111
ABSTRACT:
Integrated circuits in dice on a wafer are qualified by providing two sets of conductors connected to each die by fusible elements, biasing the dice using said conductors during exposure to a qualifying environment, testing the fusible elements, removing the conductors and testing the circuits. Where the environment is gamma radiation, the fusible elements are tested before annealing of radiation damage and the circuits are tested before and after annealing.
REFERENCES:
patent: 3461547 (1969-08-01), Di Curcio
patent: 3553830 (1971-01-01), Jenny et al.
patent: 3723873 (1973-03-01), Witteles
patent: 3769693 (1973-11-01), Cates et al.
patent: 3849872 (1974-11-01), Hubacher
patent: 4032949 (1977-06-01), Bierig
patent: 4172228 (1979-10-01), Gauthier et al.
patent: 4220918 (1980-09-01), Pepper
Harris Corporation
Weisstuch Aaron
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