Patent ID: 7943522

Claim:
A manufacturing method of a semiconductor device using a semiconductor manufacturing unit comprising a reaction chamber, a substrate mounting stage, a high frequency power supply coupled to the substrate mounting stage, a blocking capacitor interposed between the substrate mounting stage and the high-frequency power supply, and a temporary support member for a substrate to continuously perform a plurality of dry etching processing with respect to the same substrate in the same reaction chamber, the method comprising: disposing a substrate on a substrate mounting stage, and applying high-frequency power to the substrate mounting stage, thereby generating a bias voltage to the substrate while introducing a fluorocarbon-based first gas to perform a first dry etching processing with respect to the substrate; and separating the substrate from the substrate mounting stage by using the temporary support member after the first dry etching processing, and applying the high-frequency power to the substrate mounting stage while introducing a second gas to remove a fluorocarbon-based deposition in the reaction chamber and perform a second dry etching processing with respect to the substrate.