| 摘要 |
PROBLEM TO BE SOLVED: To surely show the end of communication processing of contactless IC card by providing a liquid crystal display(LCD) cell to be flickered at the end of processing by data communication. SOLUTION: An LCD cell 29 is provided on the surface of the contactless IC card 10. As such an LCD cell 29, a miniaturized cell of several mm square is used and in this case, two LCD cells 29 are provided on the surface of contactless IC card 10. Then, a liquid crystal driver 27 is added on a circuit board inside the contactless IC card 10, the liquid crystal driver 27 is connected to a microcomputer 25 or power supply circuit 23 connected through a transmission/reception circuit 21 to an antenna coil 15, and this liquid crystal driver 27 is connected to the LCD cell 29 provided on the surface of contactless IC card 10. When processing is completed, a control signal is outputted from the microcomputer 25 to the liquid crystal driver 27, and two LCD cells are flickered. |
