Patent ID: 7141451
Filing Date: 2006-11-28
Classification: G06K,H01L

Abstract:
1. A method of manufacturing a wireless communication medium using a base sheet on a surface of which transmitting/receiving antennas are formed to be arranged in a longitudinal direction of the base sheet with a spacing part between each pair of the transmitting/receiving antennas adjacent each other, by unwinding the base sheet from a first roll in which the base sheet is wound, bonding an IC chip to each of the transmitting/receiving antennas, and then rolling the base sheet in a second roll, comprising: a first step of mounting and bonding the IC chip to each of the transmitting/receiving antennas formed on the surface of the base sheet so that a plurality of assemblies each having one of the transmitting/receiving antennas and the IC chip bonded to the one of the transmitting/receiving antennas are arranged on the surface of the base sheet in the longitudinal direction of the base sheet; a second step of filling an underfill material in a gap between the one of the transmitting/receiving antennas and the IC chip bonded to the one of the transmitting/receiving antennas for each of the plurality of assemblies, and then curing the underfill material filled in the gap; a third step of testing communication performances of the plurality of assemblies and sorting the plurality of assemblies according to their qualities; a fourth step of forming a cut part in the spacing part adjacent to the IC chip of each of the plurality of assemblies; and a fifth step of covering the one of the transmitting/receiving antennas and the IC chip of the each of the plurality of assemblies corresponding to the cut part entirely with the cut part by folding the cut part, the above steps performed successively between a step of unwinding the base sheet from the first roll and a step of rolling the base sheet in the second roll, wherein the communication performances of the plurality of assemblies are tested individually in the third step, and the cut part formed in the fourth step is demarcated in a rectangular shape by a first slit extending transverse to the longitudinal direction of the base sheet and second and third slits each extended from opposite ends of the first slit toward one of the plurality of assemblies to be covered by the cut part in the spacing part adjacent to the one of the plurality of assemblies.