Lintec Corporation

Takakazu Murakami

Taiga Matsushita

Naoki Hasegawa

Yasukazu Nakata

Masateru Yamakage

Katsumi Katakura

An antenna circuit which includes a substrate and a planar circuit with a circuit line of a conductive material formed on a surface of the substrate, and at least one conductive pad (notch-forming part) electrically connected with the circuit line of the planar circuit. Cutting lines, such as perforations, are provided in the substrate around an outer periphery of the notch-forming part and extend into the notch-forming part on either side of connection points where the circuit line connects with the notch-forming part, The cutting lines approach each other in the notch-forming part to form a section (notch port). The antenna circuit can be destroyed even if an IC tag provided with the antenna circuit is peeled off from various directions, and the destruction rate of the circuit can be increased stably.

Antenna circuit

According to the present invention, there is disclosed an antenna circuit characterized by comprising:

IC tag

The present invention discloses: an IC inletwhich comprises a substrate, a surface circuit including a plain coil circuit portionformed on the substrate and opposed electrodesandindividually connected with the two ends of the plain coil circuit portion, and an IC chipmounted in connection with the opposed electrodes, wherein a cut-away broken lineformed in at least a portion of the surface circuit so as to pass through the substrate and the surface circuit, and IC tag which is produced by the use of the IC inlet.

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Tokyo, Japan

Takakazu Murakami