IC card and booking-account system using the IC card
摘要
It is an object of the present invention to provide a highly sophisticated functional IC card that can ensure security by preventing forgery such as changing a picture of a face, and display other images as well as the picture of a face. An IC card comprising a display device and a plurality of thin film integrated circuits; wherein driving of the display device is controlled by the plurality of thin film integrated circuits; a semiconductor element used for the plurality of thin film integrated circuits and the display device is formed by using a polycrystalline semiconductor film; the plurality of thin film integrated circuits are laminated; the display device and the plurality of thin film integrated circuits are equipped for the same printed wiring board; and the IC card has a thickness of from 0.05 mm to 1 mm. <IMAGE>
申请公布号
EP1437695(A2)
申请公布日期
2004.07.14
申请号
EP20030029235
申请日期
2003.12.18
申请人
SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
发明人
TAKAYAMA, TORU;MARUYAMA, JUNYA;GOTO, YUUGO;OHNO, YUMIKO;AKIBA, MAI