Patent ID: 7263771

Claim:
A method for producing a contact sheet for providing an electrical connection between a plurality of electronic devices, comprising the steps of: (a) providing at least a first and a second bonded sheet, wherein each said first and said second bonded sheet is formed by a method comprising the steps of (i) providing an insulating base sheet having a plurality of through-holes formed therein in an array pattern, wherein said plurality of through-holes is less than a number of terminals of an electronic device, (ii) providing a plurality of conductive contacts, each said conductive contact comprising a first portion, an integral second portion immediately adjacent said first portion and an integral third portion immediately adjacent said second portion, wherein a total area of said first portion and a respective one of said through-holes is greater than a unit grid area formed by an arrangement of terminals of an electronic device, and wherein a total length of said second portion and said third portion of each said conductive contact substantially corresponds to a length of said through-holes, (iii) bonding said first portion of said conductive contact to a portion of said insulating base sheet proximate an edge of a respective one of said through-holes, and (iv) bending said conductive contact such that said second portion of said conductive contact protrudes from a first surface of said insulating base sheet and said third portion of said conductive contact protrudes from an opposed second surface of said insulating base sheet to form an elastic cantilever contact portion; (b) arranging and stacking said first and said second bonded sheets in an offset position such that said through-holes of said first bonded sheet and said through-holes of said second bonded sheet overlap; and (c) bonding said first and said second bonded sheets together to form said contact sheet, wherein said third portion of each said conductive contact of each said first and said second bonded sheet extends from a second surface of said contact sheet.