A notification system comprises a plurality of claim checks and a plurality of communication device identifiers. The ionic compound can be added in a pressure-sensitive adhesive of a polarizer of a liquid crystal display panel to avoid the phenomenon of the static electricity residual when the release film is removed from the pressure-sensitive adhesive. 2 \u03bcm along a depth direction of the semiconductor substrate and an impurity concentration of 1\xd71014 to 1\xd71018cm3.