Patent ID: 11868147
Assignee: APPLIED MATERIALS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A non-transitory computer-readable medium comprising instructions that, when executed by one or more processors, cause the one or more processors to perform operations comprising:
receiving, from an Optical Emission Spectrometer (OES), a measurement that is indicative of an amount of a gas species in a Physical Vapor Deposition (PVD) chamber while performing a current process on a semiconductor substrate in the PVD chamber;
accessing a stored set of parameters for a control process, wherein parameters in the stored set of parameters correspond to different predetermined target amounts of the gas species;
selecting a parameter for the control process from the stored set of parameters based on the predetermined target amount of the gas species for the current process on the semiconductor substrate in the PVD chamber;
providing the measurement as a feedback input and the parameter to the control process that is configured to maintain a predetermined target amount of the gas species in the PVD chamber;
generating a setpoint from the control process for a gas flow controller that controls an amount of the gas species that flows into the PVD chamber while performing the current process on the semiconductor substrate; and
causing the gas flow controller to provide the gas species to the PVD chamber using the setpoint from the control process.