Non-contact id card and the like and method for manufacturing same

摘要

A low-cost non-contact ID card having practical electrical properties and the like is disclosed. The non-contact ID card comprises an antenna circuit board wherein an antenna is formed on a substrate and an interposer board wherein an enlarged electrode is formed on a substrate that is mounted with an IC chip. The enlarged electrode is connected to an electrode of the IC chip. The antenna circuit board and the interposer board are joined in such a manner that an electrode of the antenna is in direct contact with the enlarged electrode which is a resin electrode made of a conductive resin containing a thermoplastic resin.