Abstract: An objective is to provide a method for judging the authenticity of a product or component. Provided is a method for judging product or component authenticity. The method includes a step of determining the percentage of radioactive carbon-14 based on ASTM 6866 with respect to at least one constituent that a product or component of interest obtained has. Here, at least one constituent that an authentic product or component has and that corresponds to the constituent of the product or component of interest includes a resin comprising a prescribed percentage of radioactive carbon-14.

Abstract: Provided is a capacitive touch panel which has enhanced sensitivity and is usable in an image display panel, etc. in this capacitive touch panel, a window, a first transparent film having a first transparent conductive electrode pattern formed on one surface thereof, and a second transparent film having a second transparent conductive electrode pattern which is formed on one surface thereof and disposed with respect to the first transparent film in such a manner as to allow a capacitance to be formed therebetween, are stacked in turn. The capacitive touch panel comprises a first transparent inter-layer resin provided between the window and the first transparent film, and a second transparent inter-layer resin provided between the first transparent film and the second transparent film, wherein the first transparent inter-layer resin has a dielectric constant greater than that of the second transparent inter-layer resin.

Abstract: The present invention relates to an adhesive sheet which is to be applied to an adherend, in which the adhesive sheet includes an adhesive layer containing a volume change substance that expands in volume upon reception of an external stimulus and thereafter contracts in volume with a lapse of time, and the adhesive sheet is configured so that a plurality of surface irregularities are formed on at least one surface of the adhesive layer as a result of the volume expansion of the volume change substance and that channel areas for air bubble expelling are capable of being formed between said one surface of the adhesive layer and the adherend based on the surface irregularities.

Abstract: The present invention relates to an adhesive sheet including an adhesive layer, in which the adhesive sheet includes a plurality of columnar fine structures which are disposed upright on at least one surface of the adhesive layer and are capable of forming channels for expelling air bubbles, between the adhesive layer and an adherend.

Abstract: The present invention relates to an adhesive sheet including an adhesive layer and a release liner disposed on one surface of the adhesive layer, in which the adhesive layer is configured so as to show follow-up deformations in response to peeling of the release liner from the adhesive layer and have first areas having a first follow-up deformation height and second areas having a second follow-up deformation height, in which the first follow-up deformation height is a height dimension of the follow-up deformation in the first areas, the second follow-up deformation height is a height dimension of the follow-up deformation in the second areas, and the second follow-up deformation height is larger than the first follow-up deformation height.