PURPOSE: To obtain an IC card having a stability and protected from a destruction by an electrostatic charge by providing a photoconductive part on an upper layer of an electrode part and applying an optical signal during using to give the conduction.

CONSTITUTION: A photoconductive part 4 is formed by polyvinyl carbazole or the like capable of obtaining a conduction by applying an optical signal. During using an IC card, the optical signal is applied to the photoconductive part 4 through an electrode window part 2 of the IC card by a light source of an external circuit side to obtain the conduction and there can be conductive between the external circuit and the electrode part. During the IC card being not used, the photoconductive part 4 shows a property as an insulating material. Even when an electrostatic charge is carelessly applied to the respective window parts of the IC card, an influence is not given to an IC chip in the IC card or its peripheral circuit part, which is scarcely destroyed by the electrostatic charge and the safety of the IC card can be improved.