Patent ID: 7723131
Filing Date: 2010-05-25
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device comprising the steps of: (a) providing a base substrate on which a plurality of first semiconductor chips are mounted, (b) measuring a distance (A) between the first main surface of one of the plurality of first semiconductor chips and a drive section of a paste applicator having a drive motor that drives a movable section of the paste applicator with a laser displacement meter installed in the drive section of the paste applicator; (c) moving a nozzle supported by the movable section of the paste applicator with said drive motor to a first stand-by position located above the one of the plurality of first semiconductor chips; (d) lowering the movable section with the drive motor to bring down the nozzle from the first stand-by position to a first discharge position closer to the first main surface of the one of the plurality of first semiconductor chips than the first stand-by position; (e) raising the nozzle up with the drive motor to the first stand-by position from the first discharge position, and measuring a distance (B) output from the drive motor as a rise distance of the movable section from the first discharge position to the first stand-by position; (f) measuring a distance (A′) between another of the plurality of first semiconductor chips and the drive section of the paste applicator with the laser displacement meter, (g) measuring a vertical displacement quantity (C) of the movable section relative to the drive section, which occurs due to a positional deviation between the drive section and the movable section during the period from the step (a) to the (f), by using a height sensor installed in the movable section; (h) after the step (g), calculating a distance (B′) corrected based on a difference between the distance (A) and the distance (A′), and based on the vertical displacement quantity (C), (i) after the step (h), moving the nozzle to a second stand-by position located above the another of the plurality of first semiconductor chips; (j) lowering the movable section with the drive motor by the distance (B′) to bring down the nozzle from the second stand-by position to a second discharge position close to a first main surface of the another of the plurality of first semiconductor chips; (k) after the step (j), supplying a paste to the first main surface of the another of the plurality of first semiconductor chips from the nozzle; and (l) after the step (k), stacking second semiconductor chip over the first main surface of the another of the plurality of first semiconductor chips.