Patent ID: 7988807

Claim:
A method for manufacturing a laminated body, the method comprising coating on a light transmitting support a photothermal conversion layer precursor containing a light absorbing agent and a heat decomposable resin solution or a monomer or oligomer as a precursor material of a heat decomposable resin; drying to solidify or curing said photothermal conversion layer precursor to form a photothermal conversion layer on said light transmitting support; applying an adhesive to a substrate to be ground or the photothermal conversion layer to form a joining layer; and joining said substrate to be ground and said photothermal conversion layer through said joining layer under reduced pressure to form a laminated body, grinding said substrate, to a desired thickness to form a ground surface on one side of the thin substrate; disposing a die bonding tape on the ground surface of the substrate side of the laminated body, irradiating said photothermal conversion layer through said light transmitting support to decompose said photothermal conversion layer and thereby to separate said substrate and said light transmitting support after grinding; and peeling said joining layer from said substrate after grinding, wherein the photothermal conversion layer comprises a light absorbing agent and a heat decomposable resin disposed beneath and in contact with the joining layer, and wherein the joining layer is an adhesive selected from the group consisting of rubber-base adhesives; one-part thermosetting adhesives based on epoxy or urethane; two-part thermosetting adhesives based on epoxy, urethane, or acryl; hot-melt adhesives based on acryl or epoxy; ultraviolet-curable adhesives based on acryl or epoxy; visible light-curable adhesives based on acryl or epoxy; electron beam-curable adhesives based on acryl or epoxy; and water dispersion-type adhesives.