Patent ID: 8405229

Claim:
An electronic package comprising an electronic device including a high density pattern of conductors terminating at distal ends having a first dimension; a first interposer adapted for electrically interconnecting said high density pattern of conductors of said electronic device and a less dense pattern of conductors terminating at distal ends having a second dimension on a circuitized substrate, said first interposer including a single thin dielectric layer having a first surface bonded to said electronic device and a second surface which is opposite to the first surface, said single thin dielectric layer having a high density pattern of openings therein exposing said high density pattern of conductors of said electronic device and extending through said single thin dielectric layer, a circuit pattern on said second surface of said single thin dielectric layer and including a first high density pattern of conductors similar to said high density pattern of conductors of said electronic device, a second less dense pattern of conductors positioned adjacent said first high density pattern of conductors of said single thin dielectric layer and a plurality of circuit lines interconnecting selected ones of said conductors of said first high density pattern of conductors on said second surface to selected ones of said conductors of said second less dense pattern of conductors, and a plurality of conductive members, each of said conductive members terminating at proximal and distal ends having a third dimension no greater than said first and second dimensions of said conductors of said high density pattern and said less dense pattern and being positioned within a selected one of said high density pattern of openings and opposite and aligned with said selected ones of said high density pattern of conductors of said electronic device for direct electrical interconnection and direct physical contact thereof to selected ones of said first high density pattern of conductors on said second surface, said conductors of said second less dense pattern of conductors for electrical coupling to said less dense pattern of conductors of said circuitized substrate; and a second interposer intermediate said first interposer and said circuitized substrate and below said single thin dielectric layer supporting said circuit pattern for assuring a sound connection between said high density patterns and less dense patterns of conductors due to an ease of alignment, said second interposer comprising dielectric material and a plurality of plated holes disposed substantially perpendicularly therethrough.