Active solid-state devices (e.g. – transistors – solid-state diode – Contacts or leads including fusible link means or noise...
Patent
1997-04-25
1999-08-10
Brown, Peter Toby
Active solid-state devices (e.g., transistors, solid-state diode
Contacts or leads including fusible link means or noise...
257686, 257693, 257766, 257777, H01L 2358
Patent
active
059363029
ABSTRACT:
The present invention is a method and apparatus for programming a stack of segments wherein each segment includes a plurality of die which are interconnected through metal interconnects patterned on the surface of each segment. Once the segments are arranged into a stack, the stack is connected to external circuits and each segment is addressed through control lines. Electrically conductive fuses on the segments are used as an interface between the control lines and the die. Segment level programming is performed on each segment by opening the conductive fuses on the segments in a predetermined pattern in order to route the control lines to each segment such that segments are uniquely addressed. After segment level programming, circuit board programming is performed so that any defective die found in the stack is logically replaced with replacement die in the stack. This is accomplished by connecting a set of metal switches between all the die and each of the control lines and by dispensing a conductive epoxy whisker between the control line for the defective die and the metal switch of the replacement die. When a subsequent attempt is made to address the defective die in the stack, the replacement die is accessed instead.
REFERENCES:
patent: 5459342 (1995-10-01), Nogami et al.
Finley Michael G.
Pedersen David V.
Sautter Kenneth M.
Brown Peter Toby
Cubic Memory Inc.
Potter Roy
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