Patent ID: 8513094
Filing Date: 2013-08-20
Classification: C23C,H01L

Abstract:
1. A method of manufacturing a semiconductor device, comprising the steps of: (a) performing a grinding process on a back surface of a semiconductor wafer having a top surface thereof for which a device element formation process has been completed to thin the semiconductor wafer; (b) after the step (a), performing a preheating process on the semiconductor wafer in a state where the semiconductor wafer is held on a susceptor by its own weight with the top surface thereof facing downward to heat the semiconductor wafer to a temperature higher than a room temperature; and (c) after the step (b), depositing a first metal film by sputtering deposition over the back surface of the semiconductor wafer in a state where the semiconductor wafer is held on the susceptor by its own weight with the top surface thereof facing downward, while maintaining the heated state, wherein the susceptor exhibits an annular shape, and a radial vertical cross section of the annular shape has the following upper surfaces, which are: (x1) the first upper surface for holding a peripheral portion of the top surface of the semiconductor wafer against gravity; and (x2) the second upper surface continued to and located outside the first upper surface, and having an inclination closer to that of a vertical surface than an inclination of the first upper surface to hold a side surface of the semiconductor wafer against lateral displacement, and wherein a first angle formed by the second upper surface and the vertical surface is not less than 0 degrees and not more than 20 degrees.