Patent ID: 11881379
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C  G | IPC C  G  H

Claim 25:
26. A substrate processing apparatus comprising:
a process chamber configured to process a substrate including a pattern on a thin film, the pattern having lines and spaces therein;
a source gas supplying device configured to supply a source gas to the process chamber;
an oxygen-containing gas supplying device configured to supply an oxygen-containing gas to the process chamber;
a plasma generating device configured to generate a given plasma in the process chamber;
a heating device configured to heat the substrate; and
a controller configured to:
(a) slim the pattern in the process chamber using a first oxygen-containing gas plasma generated by the plasma generating device while causing the heating device to heat the substrate at a first temperature of 100 degrees Celsius or less;
(b) cause the heating device to heat the substrate at a second temperature of room temperature to 300 degrees C.; and
(c) form an oxide film on the slimmed pattern and the thin film in the process chamber by adsorbing the source gas on the slimmed pattern and the thin film and oxidizing the source gas using a second oxygen-containing gas plasma while causing the heating device to heat the substrate at the second temperature, the first oxygen-containing gas plasma and the second oxygen-containing gas plasma being generated by the plasma generating device, the adsorbing the source gas and the oxidizing the source gas being performed alternately, and generating the second oxygen-containing gas plasma being performed intermittently.