Method and apparatus for affixing spheres to a conductive sheet

Details Method and apparatus for affixing spheres to a conductive sheet Method and apparatus for affixing spheres to a conductive sheet

1994-07-22

1996-01-23

Picardat, Kevin M.

Fishing, trapping, and vermin destroying

437211, 437212, 437221, 437222, H01L 2160

Patent

active

054864941

ABSTRACT:
An improved method of affixing spheres 4 to a conductive foil sheet 28 is described herein. A cell matrix is provided. The cell matrix includes a conductive foil matrix 2 with spheres 4 mounted therein. Each of the spheres 4 has an insulating layer 20 disposed on it. A portion of this insulating layer 20 is removed from each of the spheres 4 to expose a portion 22 of the spheres 4. A cell sandwich 32 is then formed between an upper pressure pad 34 and a lower pressure pad 36. The cell sandwich 32 includes the cell matrix 2/4 and a conductive foil 28. The cell sandwich 32 is then heated (preferably to between about 350.degree. and 450.degree. C.). The spheres 4 are then affixed to the conductive foil 28 by compressing the cell sandwich 32. In one embodiment, the compression takes place in a roll press 48.

REFERENCES:
patent: 4691076 (1987-09-01), Levine et al.
patent: 5091319 (1992-02-01), Hotchkiss et al.
patent: 5258331 (1993-11-01), Masermoto et al.
patent: 5281556 (1994-01-01), Shimizu et al.

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