| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a double-sided non-contact IC sheet for deciding which of a plurality of non-contact communication IC units has information been written or read, even when the non-contact communication IC units whose frequencies are identical are close on the front surface and back surface to each other, in one double-sided non-contact communication IC sheet provided with the non-contact communication units on the both sides. <P>SOLUTION: This double-sided non-contact IC sheet is characterized by laminating a non-permeable layer and an insulating layer on the both sides of an electromagnetic shield material, and arranging non-contact communication IC units including a non-contact communication antenna and an IC on the both sides. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
