Manufacturing method of electronic device
View Patent ↗The conveying precision of a continuation inlet tape in the production line of the inlet for electronic tags is improved. A first structural body used as an inlet is moved to an inspection position where a communication characteristic test is carried out, and a CCD camera photographs the plane image of the structural body in the inspection position, and transmits image data to an image sensor controller. The image sensor controller measures the amount of location drifts of the structural body, analyzing the image data transmitted from the CCD camera, and transmits to a programmable controller as a correction value. It is transmitted to a positioning unit as actual movement magnitude, adjusting the correction value to the movement magnitude of standard, and the following structural body is moved according to the transmitted movement magnitude.
1. 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.
2. The manufacturing method of an electronic device according to claim 1 , wherein
repeating the step (c) and the step (d) for the second structural body after the step (d), the step (c) and the step (d) are carried out on the first structural body.
3. The manufacturing method of an electronic device according to claim 2 , wherein
each of the structural bodies is continuously arranged in the first pitch with the structural body which adjoins; and
the electrical communication test is an electric-wave characteristic test of the first structural body;
wherein, when a defect is detected by the electric-wave characteristic test, the semiconductor chip is removed from the first structural body; and
wherein, in a third position which is spaced out by an integral multiple of the first pitch from the first position in a transportation direction of the insulating film, existence of the semiconductor chip in the first structural body is detected by a first optical detecting means, and a first number of the first structural body including the semiconductor chip and a second number of the first structural body that does not include the semiconductor chip are investigated, respectively.
4. The manufacturing method of an electronic device according to claim 3 , wherein
the first optical detecting means detects existence of the semiconductor chip in the first structural body by picture processing.
5. The manufacturing method of an electronic device according to claim 1 , wherein
the first amount of drifts is determined in a direction along a transportation direction of the insulating film.
6. The manufacturing method of an electronic device according to claim 1 , wherein
the electrical communication test is an electric-wave characteristic test of the first structural body; and
when a defect is detected by the electric-wave characteristic test, the semiconductor chip is removed from the first structural body.
7. The manufacturing method of an electronic device according to claim 6 , wherein
each of the structural bodies is continuously arranged in the first pitch with the structural body which it adjoins; and
in a second position which is spaced out by an integral multiple of the first pitch from the first position in a transportation direction of the insulating film, the semiconductor chip is removed from the first structural body from which the defect was detected by the electric-wave characteristic test by a removing means arranged over the second position.
8. The manufacturing method of an electronic device according to claim 1 , wherein:
before the electrical communication test, a first test is performed beforehand to the structural bodies; and
in the first electrical communication test, existence of the semiconductor chip in the first structural body is distinguished from the image of the first structural body where it is moved from the first position, and a first number of the first structural body including the semiconductor chip and a second number of the first structural body that does not include the semiconductor chip are investigated, respectively.