Thickness of an IC card is decreased, and the manufacturing efficiency of the IC card is enhanced so as to reduce the manufacturing cost. The IC card comprises: a semiconductor element 14 having electrodes; a plane coil 12 formed in such a manner that a conductor 12b is wound on the same face, having...http://www.google.fr/patents/US6255725?utm_source=gb-gplus-shareBrevet US6255725 - IC card and plane coil for IC card
