| abstract |
An adhesive sheet characterized by having a resin layer containing a resin-containing resin portion (X) as a main component and a particle portion (Y) formed of fine particles on a substrate or a release material, and at least The surface (α) of the resin layer opposite to the side on which the substrate or release material is provided is an adhesive sheet having adhesiveness, and there are recesses on the surface (α), and the surface (α) of the resin layer, When the laminated body is bonded to the smooth surface of the light-transmitting adherend having a smooth surface, the following requirements (1) and (2) are satisfied.nn n n Requirements (1): Under the environment of 23 ° C and 50% RH, the area ratio (S 1 ) before heating of the bonding portion between the surface (α) and the smooth surface of the aforementioned transparent adherend is 10 ~ 95%.n n n Requirements (2): The area ratio after heating (S 2) of the bonding portion of the smooth surface of the aforementioned transparent adherend on the surface (α) of the laminated body after being left to stand at 80 ° C for 30 minutes. ), And the area increase rate {[(S 2 -S 1 ) / S 1 ] × 100} calculated from the area ratio (S 1 ) before heating is -10 to 20%. |