Multi-chip carrier array

Details Multi-chip carrier array Multi-chip carrier array

1984-10-04

1985-11-05

Kucia, R. R.

Electricity: electrical systems and devices

Miscellaneous

174 685, 361406, 361409, H05K 102

Patent

active

045517886

ABSTRACT:
A multi-chip carrier array in which the individual carriers are defined by two perpendicular sets of parallel scribe lines which bisect the major axes of a plurality of equally-spaced oblong perforations. At the point of intersection of any two perpendicular scribe lines, the major axes of two such perforations intersect and bisect the right angles formed by said two perpendicular scribe lines. All other oblong perforations have their major axes perpendicular to the scribe lines. On the bottom surface of the array, metallic solder pads are located at opposite ends of each oblong perforation, and conductive material from each pad extends to the top surface of the array. Trace conductors on the top surface can be connected to these pad extensions. The trace conductors, in turn, will be connected to various connection points on an IC chip mounted in the center of the top surface of an individual carrier. Because the axis of any oblong perforation forms at least a half-right angle with its intersecting scribe line, the solder pads located at opposite ends of each oblong perforation can be separated by a gap sufficiently wide to permit electrical testing of the chips prior to the division of the array into discrete carriers and to prevent peeling of either the solder pads or the printed trace conductors on the opposite side when the array is divided.

REFERENCES:
patent: 3436605 (1969-04-01), Landron, Jr.
patent: 4467400 (1984-08-01), Stopper
Gyurk, "Break Apart Laminated Substrates", Western Electric Technical Digest No. 4, Oct. 1966, pp. 15 and 16.
Balde et al., "New Chip Carrier Concepts" Motorola Inc., EDN Sep. 1978, pp. 119-126.

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