Method for repairing interconnect interruptions

Details Method for repairing interconnect interruptions Method for repairing interconnect interruptions

1989-03-23

1990-04-03

Arbes, Carl J.

Metal working

Method of mechanical manufacture

Electrical device making

2940216, 174261, 219 7801, 219 8621, 219 8624, 219119, 228103, 228119, 350523, 427140, H05K 306

Patent

active

049128434

ABSTRACT:
A method for repairing interconnect interruptions with congruent preforms. Congruent preforms that bridge an interconnect interruption are utilized for repairing interconnects whose width lies in the range from 50 through 70 .mu.m and whose course is fashioned meander-like. Interconnects having a width of about 150 .mu.m can be repaired with previous repair methods. Due to miniaturization of the interconnects, a special method for monitoring the congruent alignment between the preform and the interconnect at the location of the interruption as well as for monitoring the symmetrical bridging of an interconnect interruption is needed. This monitoring method occurs by monitoring with video camera, whereby the location of the interconnect interruption and the environment thereof, a preform that is congruent therewith, and the positioning of this preform relative to the interconnect interruption are viewed at different positions. The preform is held, aligned and positioned with only a single suction electrode from the time it is punched out until the time of the joining on the interconnect.

REFERENCES:
patent: 4418264 (1983-11-01), Thorwarth
patent: 4691426 (1987-09-01), Roueek et al.
patent: 4813588 (1989-03-01), Srivastana et al.

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