Patent ID: 7526854

Claim:
A manufacturing method of electronic tags each having an antenna which includes a conductive film formed in a main surface of an insulating film, a slit which is formed in a part of the antenna, and whose end extends and exists to an outer edge of the antenna, a semiconductor chip electrically connected to the antenna via a plurality of bump electrodes, and resin which seals the semiconductor chip, comprising the steps of: (a) preparing an insulating tape of continuation form having a plurality of structural bodies each of which corresponds to the electronic tag, each of the structural bodies being arranged in one direction at a predetermined pitch; (b) moving a first structural body of the structural bodies to a first position along the one direction, so as to perform an electrical communication test to the first structural body, by transporting by frictional force pinching both sides of the insulating tape with two rollers, the first position being inherently out of alignment from a predetermined correct position for the electrical communication test; (c) performing the electrical communication test to the first structural body under a situation where the first structural body is moved to the first position; (d) measuring a first amount of drifts between the first position and the predetermined correct position by an image of the first structural body under a situation where the first structural body is moved to the first position; (e) moving a second structural body among the structural bodies arranged in the predetermined pitch with the first structural body toward the first position such that a total moving distance of the second structural body is substantially equal to a distance of a sum of the predetermined pitch and the first amount of drifts, by transporting by frictional force pinching both sides of the insulating tape with the two rollers, and (f) after the step (e), dividing the insulating tape into individual structural bodies each corresponding to one of the electronic tags having the antenna of the conductive film and the semiconductor chip sealed with the resin.