| 摘要 |
PROBLEM TO BE SOLVED: To reduce a warpage of an antenna sheet after heat lamination, when using the antenna sheet having a hole in a portion of a base resin film in which an internal connection terminal is to be formed, in a dual interface IC card.SOLUTION: An antenna sheet for a dual card comprises: a conductive layer of a pattern of an antenna coil and a pattern of an internal connection terminal on a surface of a base resin film; a card base material of a thermoplastic resin laminated on both sides of the base resin film; a recess for a dual interface IC module to be fitted therein in the card base material; and a terminal exposure hole that reaches a surface of the internal connection terminal. A shape of the pattern exposed at the recess is an antenna dummy pattern arranged in a short side direction of the card. |
