| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a non-contact type information medium with a structure capable of improving corrosion resistance of an antenna coil and preventing flow of adhesive layers for restraining infiltration of moisture and various ions. <P>SOLUTION: A non-contact type information medium 6 includes a sheet-like or plate-like base material 12, an antenna coil 14 formed on the surface of the base material 12, an IC chip 16 connected to the antenna coil 14, adhesive layers 18 formed on both surfaces of the base material 12, and porous thermoplastic sheets 20 laminated on the adhesive layers 18. The adhesive layers 18 have properties of restraining permeation of moisture and various ions. First antenna protective layers 22 having the same or substantially the same thickness as the antenna coil 14 is formed on the surface of the base material 12 with the antenna coil 14 formed, and the first antenna protective layers 22 are formed on the outer peripheral side and inner peripheral side of the antenna coil 14 in a plan view. <P>COPYRIGHT: (C)2012,JPO&INPIT |
