IC CARD

摘要

In an IC card, cholesteric liquid crystal layers (631 and 632) reflecting red light and a cholesteric liquid crystal layer (633) reflecting blue light, in a planar state, are laminated, and a voltage is respectively applied to the laminated cholesteric liquid crystal layers (631 to 633), to change an oriented state of the cholesteric liquid crystals between the planar state and a focal conic state, so as to transmit or reflect light, thereby displaying predetermined information. Furthermore, visibility can be improved by changing a display color according to the displayed information, thereby further improving the convenience of the IC card.