| 摘要 |
An IC card for transmitting information to an external device and/or receiving information from an external device, capable of displaying information effectively making the most use of the characteristics of cholesteric liquid crystal. The IC card comprises information display means for displaying predetermined information by transmitting/reflecting light by a method in which a stack of cholesteric liquid crystal layers (631, 632) reflecting red light while in the planar state and a cholesteric liquid crystal layer (633) reflecting blue light, and voltages are applied to the stacked cholesteric liquid crystal layers (631, 632, 633)respectively to change the aligned state of cholesteric liquid crystal molecules between the planar and focal conic states.
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