Patterned array of metal balls and methods of making

Details Patterned array of metal balls and methods of making Patterned array of metal balls and methods of making

1997-05-23

1999-12-14

Ryan, Patrick

Metal fusion bonding

Process

Preplacing solid filler

228170, 22818022, 228254, B23K 3512, B23K 3102, B21D 3900

Patent

active

06000603&

ABSTRACT:
The present invention relates to a method for making an array of metal balls. The method includes the step of generating a first pattern on a metal foil which includes a plurality of foil projections. The method also includes the step of generating a second pattern on a carrier substrate. The second pattern includes a plurality of carrier recesses that are arranged and configured to correspond with the foil projections of the first pattern. The method further includes the steps of placing the metal foil and the carrier substrate together such that the foil projections of the metal foil fit within the carrier recesses of the carrier substrate, and melting the metal foil such that the foil projections form metal balls positioned within the carrier recesses of the carrier substrate. The invention also relates to metal ball arrays constructed via the above method.

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