Patent ID: 7294917

Claim:
An IC tag which has a structure comprising a first adhesive layer laminated on a surface of a substrate sheet, an electronic circuit containing a circuit line having a bypass line, in which the angle formed by the tangent of the bypass line at the connection between the bypass line and the circuit line and the tangent of the circuit line at the connection is 45° or greater, and an IC chip connecting to the electronic circuit, the IC chip and the electronic circuit being formed on a surface of the first adhesive layer, a second adhesive layer laminated for covering the electronic circuit and the IC chip, and a release agent layer formed partly at the position corresponding to a circuit section consisting of the electronic circuit and the IC chip and located at the interface between the substrate sheet and the first adhesive layer, wherein the bypass line is formed in the middle section of the circuit line spaced from both end points of the circuit line.