Patent ID: 6772953
Filing Date: 2004-08-10
Classification: G06K,H01L

Abstract:
A contactless data carrier, comprising:an electronic circuit module including an antenna coil and an integrated circuit electrically connected to each other; a hollow resin case provided with a first slit and a hollow portion inside; and a shielding plate, wherein the electronic circuit module is contained in the hollow portion of the hollow resin case, the first slit spatially connects the hollow portion and an outside of the hollow resin case, and the shielding plate is provided in the hollow portion of the hollow resin case and between the electronic circuit module and the first slit to partition the hollow portion and is provided with a second slit, the hollow portion being on a side of the electronic circuit module with respect to the shielding plate and communicating with the outside of the hollow resin case through the second slit and the first slit.