Patent ID: 8530278

Claim:
A method of manufacturing a semiconductor device, comprising the steps of: (a) providing a first semiconductor chip having a first main surface, a first electrode formed on the first main surface, and a first back surface opposing the first main surface; (b) mounting a second semiconductor chip over the first semiconductor chip such that a second back surface of the second semiconductor chip faces the first main surface of the first semiconductor chip, and such that the first electrode is spaced from the second semiconductor chip in a plan view, the second semiconductor chip having a second main surface opposing the second back surface and a second electrode formed on the second main surface; (c) mounting a third semiconductor chip over the second semiconductor chip such that a third back surface of the third semiconductor chip faces the second main surface of the second semiconductor chip, and such that the second electrode is spaced from the third semiconductor chip in the plan view, the third semiconductor chip having a third main surface opposing the third back surface and a third electrode formed on the third main surface; and (d) electrically connecting the first electrode of the first semiconductor chip and the second electrode of the second semiconductor chip via a first wire, wherein step (d) includes: (d1) connecting a first part of the first wire and the first electrode of the first semiconductor chip by using a capillary, the first wire leading out of the capillary through a through hole of the capillary; (d2) after step (d1), moving the capillary in a reverse operation from the first electrode away from the second semiconductor chip to a first position, the third semiconductor chip being mounted over the second semiconductor chip such that a horizontal distance from the second electrode to an edge of the third semiconductor chip closest to the second electrode is less than a horizontal movement distance of the reverse operation from the first electrode to the first position; (d3) after step (d2), moving the capillary from the first position to the second electrode of the second semiconductor chip; and (d4) after step (d3), electrically connecting a second part of the first wire with the second electrode of the second semiconductor chip.