| abstract |
The present application relates to a transparent adhesive sheet. Specifically, the present application relates to a photocurable pressure-sensitive adhesive sheet, and provides a pressure-sensitive adhesive sheet that can be photocured even if there is a location that is difficult for light to reach, such as a printed hidden portion, and that it is a pressure-sensitive adhesive sheet having a certain thickness. The sheet is an integrally cured, new adhesive sheet. A transparent adhesive sheet is provided, which is characterized in that it comprises an adhesive composition, and the adhesive composition contains: a thermoplastic resin (A); a crosslinking agent (B); A photopolymerization initiator (C) that reacts with light; and a wavelength conversion agent (D) that is excited by light on the shorter wavelength side than the wavelength of 380 nm and emits light with a wavelength of 380 nm to 550 nm, adhesion at a wavelength of 390 nm The absorbance X of the sheet and the thickness Y of the adhesive sheet satisfy the following relational formula (1): formula (1) ··· 0.5≤X/Y≤12. |