Patent ID: 8415235

Claim:
An adhesive sheet, comprising: a substrate film; an adhesive layer having an adhesive coated on the substrate film; and a die attachment film laminated on the adhesive layer, the adhesive further comprising: a (meth)acrylate ester polymer; a urethane acrylate oligomer having 4 or more vinyl groups; silicone microparticles; and a silicone graft polymer, wherein: the content of the silicone microparticles is between 0.1 parts by mass and 100 parts by mass per 100 parts by mass of the (meth)acrylate ester polymer, the content of the urethane acrylate oligomer is between 20 parts by mass and 200 parts by mass, the content of the silicone graft polymer is between 0.05 parts by mass and 12.5 parts by mass per 100 parts by mass of the (meth)acrylate ester polymer, and the silicone microparticles are microparticles having silicone rubber spherical microparticles coated with a polyorganosilsesguioxane resin.