IC card having an antenna

摘要

The present invention relates to an IC card in which for example, even if a state should occur in which a plurality of IC cards (11, 12) are piled up in any direction for use, a received signal is not greatly lowered but a normal usage pattern is secured. When the IC cards (11, 12) are piled up with the contours united, a projection drawing of an antenna (31) of one IC card (11) to an antenna surface of the other IC card (12) has an area not overlapped at least 15% or more of an area having an antenna (32) to the other antenna surface on the projection surface and the IC card can work. <IMAGE>