| abstract |
Provided herein is an epoxy resin composition which comprises a curable epoxy resin, a hardener, and a block copolymer formed by the reaction of a-triphenol-alkane type resin or a polymer thereof with a specific organopolysiloxane. It provides a cured product having a high glass transition point, a low coefficient of expansion, good crack resistance, and less liability to exerting stress to the semiconductor devices. It exhibits its distinct performance when used as a sealing compound for semiconductor devices, especially in the case where the element is bonded directly to a printed circuit board or heat sink. It is very little liable to warp the semiconductor device sealed with it. |