Patent ID: 6905961

Claim:
A method of stiffening the land grid array connection structure of a flexible chip carrier, comprising the steps of: providing a layer of flexible dielectric material having a chip site on one surface thereof and having an array of land grid array contacts on the other surface thereof with each contact arranged so as to be aligned for conductive contact with respective ones of an array of land grid array contacts on a substrate for said chip carrier; providing a layer of stiffening material to attach to said layer of flexible dielectric material at said other surface thereof, said layer of stiffening material having an array of contacts on one surface thereof matching said array of land grid array contacts on the said other surface of said flexible dielectric material; providing openings in said layer of stiffening material to expose each contact of said array contacts on said one surface of said layer of stiffening material; filling said openings with conductive material to form conductors in conductive contact with said contacts of said array of contacts on said one surface of said layer of stiffening material; and attaching said layer of stiffening material with conductors to said layer of flexible dielectric material so that said array of contacts on said one surface of said stiffening material align with and are in contact with said land grid array of contacts on said other surface of said flexible dielectric material.