Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1990-11-29
1992-11-03
Ryan, Patrick J.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428901, 428432, 428426, 428457, B32B 900
Patent
active
051607794
ABSTRACT:
A probe assembly for testing semiconductor wafer chips includes microprobes embedded in a circuit substrate. The microprobes are pillar-shaped conductors formed in through holes in a base of the substrate. One end of the microprobe is flush with the base surface contacts and is electrically connected through a reinforcing substrate to a probe assembly test head which generates various test signals. The other end of the pillar-shaped microprobes projects beyond the base to make contact with and deliver test signals to various electrodes of a chip to be tested.
REFERENCES:
patent: 3827891 (1974-08-01), Larry
patent: 4563640 (1986-01-01), Hasegawa
Hoya Corporation
Lee Kam F.
Ryan Patrick J.
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