Patent ID: 9711383
Date: 2017-07-18
CPC Classifications: B25B,H01L,Y10S,Y10T

Claim:
1. A method of fabricating semiconductor devices by picking up a rectangular semiconductor chip including two short end portions and two long end portions, which is formed by cutting a semiconductor wafer stuck to an adhesive sheet with dicing, from the adhesive sheet, the method comprising the steps of: preparing a stage having a plurality of grooves on the upper surface thereof, an evacuation means, and a suction means applying suction to the semiconductor chip, the plurality of grooves including a first group of grooves and a second group of grooves, the first group of grooves perpendicularly intersecting the second group of grooves, adjacent grooves of the first group of grooves being spaced at a first predetermined interval, adjacent grooves of the second group of grooves being spaced at a second predetermined interval, the length of the first and second intervals each being less than a length of the short end portions of the semiconductor chip; turning the stage so that an end portion of a longitudinal direction of each of the first group of grooves of the stage forms a predetermined angle θ to one of the end portions of the semiconductor chip; mounting the semiconductor chip on the stage, after the step of turning the stage, with the side of the surface of the semiconductor chip having the adhesive sheet stuck thereto made to be on the stage side while maintaining the predetermined angle θ; making the semiconductor chip held at top portions formed by the end portions on the opening side of the grooves on the stage, after the step of mounting, with the adhesive sheet put in between with a space, surrounded by the adhesive sheet contacting the stage and the grooves on the stage, being evacuated by the evacuation means, each of the end portions of the semiconductor chip being in contact with at least one of the top portions; and applying suction to the semiconductor chip held at the top portions, after the step of making the semiconductor chip held, by the suction means to pick up the semiconductor chip.