GENUINENESS INDICATOR

摘要

PROBLEM TO BE SOLVED: To provide a genuineness indicator in which forgery is difficult and design feature is high in a state discrimination of reflection light from a liquid crystal layer is high. SOLUTION: Layers are laminated with a direction of a phase delay axis of a layer being arranged so that it is orthogonal to the phase delay axis of a protection layer 11 by using the same layer as the protection layer 11 as a phase difference regulation layer P1 for canceling or reducing at least change of a phase difference in an in-plane direction of a sheet out of the change of the phase difference in which the protection layer 11 being an anisotropic layer having anisotropy is given to light by being provided at an observation side rather than the liquid crystal layer 12. Thereby genuineness determination using the reflection light from the liquid crystal layer 12 is more sure or easy genuine indicator 101 without disturbing a polarization function of the liquid crystal layer 12 by anisotropy of the protection layer 11. COPYRIGHT: (C)2007,JPO&INPIT