Patent ID: 6039831
Filing Date: 2000-03-21
Classification: C08G,C08L,C09J,H01L

Abstract:
A method for manufacturing a semiconductor device, comprising the steps of:mounting a semiconductor chip on a substrate using an electrically conductive silicone elastomer composition comprising (A) 100 parts by weight of an organopolysiloxane consisting essentially of (a) 5-95% by weight of an acrylic functional group-containing organopolysiloxane having an average of at least two silicon-bonded acrylic groups per molecule having the formula: ##STR23## wherein R.sup.1 is a hydrogen atom or a monovalent hydrocarbon group. R.sup.2 is a hydrogen atom or a monovalent hydrocarbon group, and R.sup.3 is a divalent hydrocarbon group having 1-10 carbon atoms; and (b) 95-5% by weight of an alkenyl group-containing organopolysiloxane having an average of at least two silicon-bonded alkenyl groups per molecule: (B) a silicon-bonded hydrogen atom-containing organopolysiloxane having an average of at least two silicon-bonded hydrogen atoms per molecule, in a quantity sufficient to provide 0.5 to 20 moles of silicon-bonded hydrogen atoms in component (B) per mole of silicon-bonded alkenyl group in component (b); (C) 50-2,000 parts by weight of an electrically conductive filler: (D) 0.1-20 parts by weight of a photosensitizer: and (E) a platinum catalyst, in a sufficient quantity to cure the electrically conductive silicone elastomer composition;irradiating said composition with a high-energy beam to induce an acrylic functional group free radical reaction; and thenallowing the composition to cure via a hydrosilylation reaction.