| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique of inserting a semiconductor chip having an external antenna into a sheet-shaped material, such as a paper and a plastic sheet, and a technique of easily and efficiently inserting a fine semiconductor chip into a sheet-shaped material for furthermore improving anticounterfeit effects in conventional anticounterfeit paper made to contain threads. <P>SOLUTION: A thread 1 provided with a semiconductor chip 10 attached with an external antenna 41 having sides of 0.5 mm or less, having therein a memory of a plurality of bits and provided with antenna wiring is adhered on a surface of a sheet-shaped material or inserted into a sheet-shaped material to obtain an anticounterfeit sheet-shaped material. The semiconductor chip is a non-contact type, capable of performing writing/reading of information, and surely judges the real and the false by reading information on the semiconductor chip included in the sheet-shaped material. A timing mark 21 to be a reference of a position of adhering the semiconductor chip attached with an external antenna is given to the thread. When the thread is inserted into the sheet-shaped material while detecting the mark, the semiconductor chip attached with an external antenna can be accurately and efficiently inserted in a predetermined position of the sheet-shaped material. <P>COPYRIGHT: (C)2004,JPO |
