Patent ID: 8587130

Claim:
A die-sorting sheet on which each chip having an adhesive layer is temporarily attached, which die-sorting sheet comprises a pressure-sensitive adhesive layer for fixing a ring frame and a base film for temporarily attaching each chip having the adhesive layer, wherein the pressure-sensitive adhesive layer is laminated on an outer periphery of the base film and exposed on an outer periphery of the die-sorting sheet, wherein only the base film is exposed on a central area that is inside the outer periphery of the die-sorting sheet, wherein the base film is not a pressure-sensitive adhesive layer and has no energy ray curability, and wherein the base film is at least one resin film selected from the group consisting of polyethylene film, polypropylene film, polyvinyl chloride film, ethylene/vinyl acetate copolymer film, ethylene/(meth)acrylic acid copolymer film, ethylene/(meth)acrylate copolymer film, polyethylene terephthalate film and polyurethane film.