Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-12-27
2005-12-27
Arbes, Carl J. (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S874000, C029S878000, C228S180210
Reexamination Certificate
active
06978542
ABSTRACT:
An electronic package includes a substrate having a contact pad thereon, a reformable member such as a solder ball positioned on the contact pad, and an elastic member positioned around the reformable member. The elastic member exerts a girdling force on the reformable member so that when the reformable member is softened, the elastic member elongates the reformable member. This elongation accommodates thermal and other stresses between the foregoing substrate and another substrate joined at the free end of the reformable member. An apparatus is also provided for positioning the elastic member on and around the reformable member.
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Arbes Carl J.
International Business Machines - Corporation
Jordan John A.
Steinberg William H.
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