Heatspreader carrier strip

Details Heatspreader carrier strip Heatspreader carrier strip

1995-06-09

1997-10-28

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Laterally noncoextensive components

428620, 428676, 428929, 428931, 257677, H01L 23495

Patent

active

056816634

ABSTRACT:
An intermediate workpiece includes a first strip of laminated material exhibiting high thermal conductivity and which is subject to bowing in response to thermal cycling. A second strip of copper material is welded to the first strip along a longitudinal abutting edge of each strip. The first strip is partitioned into smaller heatspreader sections each for having a semiconductor die soldered thereto. Thermal manufacturing cycles will not cause a bowing of the second strip or of the heatspreader sections attached thereto.

REFERENCES:
patent: 3134701 (1964-05-01), Evans et al.
patent: 4283464 (1981-08-01), Hascoe
patent: 4320412 (1982-03-01), Hynes et al.
patent: 4980245 (1990-12-01), Marino
patent: 4996115 (1991-02-01), Eerkes et al.
patent: 5156923 (1992-10-01), Jha et al.
patent: 5288667 (1994-02-01), Taruya et al.
patent: 5358795 (1994-10-01), Nakamura et al.

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