A pressure sensitive adhesive sheet comprising, on a substrate or a release material, a resin layer that includes a resin part containing a resin as a main component, and a particle part consisting of silica particles with a volume-average secondary particle diameter of 1 to 8 μm determined by measuring the particle size distribution according to a Coulter counter method; wherein the resin layer has a multi-layer structure containing a layer (Xβ) mainly containing the resin part, a layer containing the particle part in an amount of 15% by mass or more, and a layer (Xα) mainly containing the resin part, as laminated in this order from the side on which the substrate or the release material is provided, at least a surface (α) of the resin layer being opposite to the side thereof on which the substrate or the release material is provided having pressure sensitive adhesiveness, wherein one or more concave portions exist on the surface (α), when the surface (α) of the resin layer is adhered to a smooth surface of a light transmissive adherend having a smooth surface to give a laminate, wherein the smooth surface means a surface having a centerline mean roughness (Ra 75) of 0.1 μm or less according to JIS B0601:2001 and the light transmissive adherend is characterized by having a total light transmittance of 70% or more measured according to JIS K7105, the pressure sensitive adhesive sheet satisfies the following requirements and: Requirement: in an environment at 23°C and 50% RH, the areal ratio S 1 of the attached area before heating is 30 to 90 %, wherein [areal ratio (%) of one or more attached areas] = S/total area of selected region × 100, the area S corresponds to the attached area on the surface (α) which is in contact with the smooth surface of the light transmissive adherend, and Requirement: after the laminate is statically left in an environment at 80°C for 30 minutes, the areal ratio S 2 of the attached area after heating is measured according to the method for determination of S 1, and the area increase rate {[(S 2 - S 1)/S 1] × 100} calculated from S 2 andS 1 is -3 to 8 %; wherein the areal ratio of the one or more attached areas in the surface (α) can be calculated by the operations (i), (ii) and (iii) according to the description, characterized in that in the multi-layer structure of the resin layer the content of the particle part in the layer (Xβ) is in the range of 0 to 10% by mass, and the content of the particle part in the layer (Xα) is in the range of 0 to 10% by mass. wherein the resin layer has a multi-layer structure containing a layer (Xβ) mainly containing the resin part, a layer containing the particle part in an amount of 15% by mass or more, and a layer (Xα) mainly containing the resin part, as laminated in this order from the side on which the substrate or the release material is provided, at least a surface (α) of the resin layer being opposite to the side thereof on which the substrate or the release material is provided having pressure sensitive adhesiveness, wherein one or more concave portions exist on the surface (α), when the surface (α) of the resin layer is adhered to a smooth surface of a light transmissive adherend having a smooth surface to give a laminate, wherein the smooth surface means a surface having a centerline mean roughness (Ra 75) of 0.1 μm or less according to JIS B0601:2001 and the light transmissive adherend is characterized by having a total light transmittance of 70% or more measured according to JIS K7105, the pressure sensitive adhesive sheet satisfies the following requirements and: Requirement: in an environment at 23°C and 50% RH, the areal ratio S 1 of the attached area before heating is 30 to 90 %, wherein [areal ratio (%) of one or more attached areas] = S/total area of selected region × 100, the area S corresponds to the attached area on the surface (α) which is in contact with the smooth surface of the light transmissive adherend, and Requirement: after the laminate is statically left in an environment at 80°C for 30 minutes, the areal ratio S 2 of the attached area after heating is measured according to the method for determination of S 1, and the area increase rate {[(S 2 - S 1)/S 1] × 100} calculated from S 2 andS 1 is -3 to 8 %; Requirement: in an environment at 23°C and 50% RH, the areal ratio S 1 of the attached area before heating is 30 to 90 %, wherein [areal ratio (%) of one or more attached areas] = S/total area of selected region × 100, the area S corresponds to the attached area on the surface (α) which is in contact with the smooth surface of the light transmissive adherend, and Requirement: after the laminate is statically left in an environment at 80°C for 30 minutes, the areal ratio S 2 of the attached area after heating is measured according to the method for determination of S 1, and the area increase rate {[(S 2 - S 1)/S 1] × 100} calculated from S 2 andS 1 is -3 to 8 %; wherein the areal ratio of the one or more attached areas in the surface (α) can be calculated by the operations (i), (ii) and (iii) according to the description, characterized in that in the multi-layer structure of the resin layer the content of the particle part in the layer (Xβ) is in the range of 0 to 10% by mass, and the content of the particle part in the layer (Xα) is in the range of 0 to 10% by mass.