Patent ID: 7648369

Claim:
An interposer comprising an electrically insulating carrier that comprises a plurality of electrically conductive holes disposed in as plurality of rows and columns and extending between first and second opposed surfaces thereof, a first plurality and a second plurality of hollow electrically conductive contact buttons that are disposed on said first and second surfaces, respectively, in registration and in electrical contact with said holes, wherein each of said first and second pluralities of contact buttons comprises an annular base portion and a plurality of conical portions that protrude from different parts of said base portion in a pattern that forms a plurality of closed surface voids so as to accommodate forced physical contact when compressed, wherein said surface voids of said first plurality of electrically conductive buttons and second plurality of electrically conductive buttons are registration with one another, and wherein said plurality of conical portions protrude from said annular base portion to a disk portion positioned within said annular base portion and spaced from said annular base portion along an axis of said annular base portion.