Wireless ic device and component for wireless ic device

摘要

A wireless IC device that reduces cost for manufacturing a package, that can be attached to a small article, and that suppresses the thickness of a tag forming portion is formed. For example, a cutout portion (61) having no aluminum-deposited film is formed at an end of an article package (60) made of an aluminum-deposited laminated film, and an electromagnetic coupling module (1) is provided at that portion. The electromagnetic coupling module (1) and the aluminum-deposited film of the package (60) constitute a wireless IC device. A loop electrode, which is a magnetic field transmission auxiliary radiator of the electromagnetic coupling module (1), is coupled to the aluminum-deposited film of the package (60). Thus, the article package (60) operates as a radiator of an antenna overall.