Patent ID: 6239386
Filing Date: 2001-05-29
Classification: H01R,H05K,Y10T

Abstract:
An interposer for making connections to electrical pads on a surface of a microelectronic element, the interposer comprising:(a) a body having a first major surface, and a second major surface facing in the opposite direction from said first major surface, said body having horizontal directions parallel to said surfaces, and vertical directions perpendicular to said surfaces;(b) a plurality of conductors extending through said body between said surfaces, said conductors having first ends and second ends;(c) a plurality of first contacts at said first major surface, each first contact being permanently joined to one of said first ends and extending radially outwardly in at least two of said horizontal directions over the first surface of the body away from the conductor, each first contact having a periphery remote from the conductor, each first contact being adapted to deform so that the periphery of each first contact will expand radially outwardly away from the joint of each first contact and the conductor responsive to a vertical force toward said body applied to each first contact, whereby each first contact will wipe the pads of a microelectronic element when the microelectronic element is juxtaposed with said first surface and forced toward said body; andd) a plurality of second contacts at said second major surface, each second contact being permanently joined to one of said second ends and extending radially outwardly in at least two of said horizontal directions over the second surface of the body away from the conductor, each second contact having periphery remote from the conductor, each second contact being adapted to deform so that the periphery of each second contact will expand radially outwardly away from the joint of each second contact and the conductor responsive to a vertical force toward said body applied to each second contact, whereby each second contact will wipe the pads of a microelectronic element when the microelectronic element is juxtaposed with said second surface and forced toward said body.