The present invention is to sense whether the present invention relates to automatic teaching correction apparatus of the semiconductor mapping equipment, the invention is oscillated in both from the laser oscillator passes through the wafer cassette is placed on either side of the laser oscillator, the wafer is accommodated in each wafer cassette and a plurality of mapping sensors each having a light receiving portion, each mapping the soon as the reference piece mounted respectively on the center of each mapping sensor as well as that maps the light emitting portion and the light receiving sensor to sense the position of the via whether blocked by each of the reference side is provided, each the mapped so as based on the information sensed by and of one or two which are respectively mounted on both sides of the sensor pairs of photosensors, each of said photosensor pulse steps are respectively controlled to rotate the respective mapping sensor on the plane matches the both mapping sensor by including a plurality of step motors which are respectively attached to the sensor, the robot unit It may be mapped to time to correct the position of the seneot twisted using a step motor so as to automatically correct the position of the mapping sensor, as well as the accurate calibration and also shorten the work time required for this place during assembly.
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