Electronics system with direct write engineering change capabili

Details Electronics system with direct write engineering change capabili Electronics system with direct write engineering change capabili

1990-04-20

1991-10-22

Picard, Leo P.

Electricity: electrical systems and devices

Miscellaneous

361409, 174254, 29847, H05K 118

Patent

active

050601164

ABSTRACT:
A electronics system and method are provided which allow engineering changes to be made to a substrate without requiring the addition of fly wires and without requiring relatively large areas of pads for attaching these wires. Each device site is surrounded by a series of engineering change ring patterns. A series of engineering change patterns allow change interconnections between device sites to be made. Fan-in metallizations extend inwardly to the device sites from these change patterns, with a series of vias making surface connections adjacent to the ring patterns. Fan-out metallizations extend from the device site pads to the ring patterns, with a series of vias making surface connections adjacent to the ring patterns. Engineering changes are made by directly writing surface metal deposits to make the appropriate connections between the vias and the ring pattern. The original chip pad connections and the new ring pattern connections can be appropriately isolated by laser deletions, if necessary.

REFERENCES:
patent: 4016463 (1977-04-01), Beall et al.
patent: 4245273 (1981-01-01), Feinberg et al.
patent: 4254445 (1981-03-01), Ho
patent: 4489364 (1984-12-01), Chance et al.
patent: 4549200 (1985-10-01), Ecker et al.
patent: 4652974 (1987-03-01), Ryan
patent: 4667404 (1987-05-01), Reisman et al.
patent: 4710592 (1987-12-01), Kimbara
patent: 4746815 (1988-05-01), Bhatia et al.
patent: 4764644 (1988-08-01), Reisman et al.
patent: 4799128 (1989-01-01), Chen
patent: 4803595 (1989-02-01), Kraus et al.
IBM Technical Disclosure Bulletin, vol. 27, No. 3, Aug. 1984, by C. J. Kraus et al., p. 1601.
IBM Technical Disclosure Bulletin, vol. 24, No. 11A, Apr. 1982, by Hubacher, pp. 5554-5557.

Affiliated with

Also associated with

Rating

Electronics system with direct write engineering change capabili does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electronics system with direct write engineering change capabili, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electronics system with direct write engineering change capabili will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-114211