Patent ID: 11887825
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  C | IPC C  H

Claim 10:
11. A plasma processing apparatus comprising:
a processing container;
a gas supply part configured to supply a gas into the processing container;
a phased array antenna configured to emit electromagnetic waves into the processing container;
a light emission monitoring mechanism configured to observe light emission of plasma generated in the processing container through observation windows provided at multiple positions in the processing container; and
a controller configured to: calculate an in-plane distribution of values representing characteristics of the plasma on a substrate, based on data on the observed light emission of the plasma; and correct at least one or more of a scanning pattern or a plasma density distribution of the plasma based on the calculated in-plane distribution of the values representing the characteristics of the plasma on the substrate,
wherein, to correct the at least one or more of the scanning pattern or the plasma density distribution of the plasma, the controller is further configured to: predict a change in an objective function representing the plasma density distribution and determine a result of the correcting the at least one or more of the scanning pattern or the plasma density distribution of the plasma, by inputting, to an inference device incorporating a learning-completed model obtained by learning a change in the objective function according to an elapsed time of the plasma processing apparatus, power and phase output from at least one antenna part of the phased array antenna, the elapsed time, and the objective function.