Patent ID: 11367610

Abstract:
A film forming method for forming a film on a pattern and cleaning a space of a processing container configured to perform therein a plasma processing under a reduced pressure environment. The space is provided with a pedestal and an upper electrode configured to supply radio-frequency power. The upper electrode is disposed in the space to face the pedestal. The method includes: placing a substrate having the pattern on the pedestal provided in the space of the processing container configured to perform therein a plasma processing under a reduced pressure environment; adjusting temperature of a main surface of the substrate for each of a plurality of regions on the main surface of the substrate; and after the adjusting with the substrate on the pedestal, repeating an ordered sequence of a first step of forming a deposition film on the pattern of the substrate and on an inner surface of the processing container, wherein the inner surface includes an inner surface of the upper electrode; and a second step of supplying electric power only to the upper electrode to generate plasma in the space, thereby cleaning the space and the inner surface.