| 摘要 |
<p>[Problem] To provide a pressure-sensitive adhesive sheet whereby the occurrence of foaming from a pressure-sensitive adhesive and melting of the base material will not occur even under high-temperature conditions. [Solution] Provided is a pressure-sensitive adhesive sheet comprising a base material comprising an optically transparent polyimide film and a light-curable pressure-sensitive adhesive layer laminated onto one side of the base material, wherein the pressure-sensitive adhesive constituting the light-curable pressure-sensitive adhesive layer contains a (meth)acrylic acid ester copolymer (A), a photopolymerizable compound (B), a multi-functional isocyanate curing agent (C), and a photopolymerization initiator (D), the (meth)acrylic acid ester copolymer (A) having a weight-average molecular weight of 1,000,000-2,000,000 and being either a copolymer of a (meth)acrylic acid ester monomer or a copolymer of a (meth)acrylic acid ester monomer and vinyl compound monomer.</p> |
