| 摘要 |
PROBLEM TO BE SOLVED: To provide an IC card with a display function capable of generating electric power by a piezoelectric element and having no fear of damage caused by operation to the card when generating the electric power.SOLUTION: An IC card 1 with a display function comprises a control section 21, a display unit 3, a switch 4, an IC chip 23, an antenna 25, a power generation part 31, a rectification circuit 33, an electricity storage part 35 and the like. The power generation part 31 has piezoelectric element films 37a and 37b mounted on a top and a bottom of a frame shape member 39. The IC card 1 with a display function generates electric power by pressing a portion corresponding to the power generation part 31 from a top and a bottom of the frame shape member 39. On the other hand, when the card is bent, the frame shape member 39 resists bending by rigidity and the piezoelectric element films 37a and 37b are not deformed, thereby, the electric power is not generated. |
