Patent ID: 8376236

Claim:
A contactless integrated circuit (IC) label that has an IC chip and is capable of exchanging data with an external reading device without contact, the contactless IC label comprising: a transparent label base material; an optical variable device formed on a lower surface of the label base material; a conductive layer formed as a metal deposition film, bonded to and formed on a lower surface of the optical variable device, and configured to function as an antenna of the IC chip; a connecting layer electrically connected to the IC chip; an insulating layer formed between the conductive layer and the connecting layer, and configured to electrically couple the conductive layer and the connecting layer; and an impedance adjusting unit formed on at least the connecting layer of the conductive layer and the connecting layer, and configured to adjust impedances of the conductive layer and the IC chip, the conductive layer formed in a desired shape by performing a demetallization process of partially removing a metal deposition thereof.