Patent ID: 8198739

Claim:
A method of forming a compressible contact structure on a semi-conductor chip, said method comprising: providing a semi-conductor chip having at least one substantially planar surface including a plurality of individual contacts thereon; bonding a compressible polymer layer to said at least one substantially planar surface including said plurality of individual contacts thereon to substantially cover said plurality of individual contacts, said polymer layer having an outer surface; forming a plurality of openings within said compressible polymer layer, each of said openings extending through said compressible polymer layer from said outer surface to expose a corresponding one of said individual contacts; depositing electrically conductive material within said plurality of openings to form electrical connections with said individual contacts and a plurality of electrically conductive line elements on said outer surface of said compressible polymer layer, each of said conductive line elements extending from a respective one of said openings a predetermined distance from said opening and including an end portion; and forming a plurality of contact members each on a respective one of said end portions of said conductive line elements, said compressible polymer layer allowing said plurality of contact members to deflect toward said substantially planar surface of said semi-conductor chip when said plurality of contact members are acted upon by an external force.