Patent ID: 11955388
Assignee: BEIJING E-TOWN SEMICONDUCTOR TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A thermal processing system for performing thermal processing of a semiconductor workpiece, the thermal processing system comprising:
a workpiece support plate configured to support a workpiece;
one or more heat sources configured to heat the -workpiece;
a window disposed between the workpiece support plate and the one or more heat sources, the window comprising one or more transparent regions that are transparent to at least a portion of electromagnetic radiation within a measurement wavelength range; and
a temperature measurement system configured to obtain a temperature measurement indicative of a temperature of the workpiece, the temperature measurement system comprising:
at least one infrared emitter configured to emit infrared radiation;
at least one infrared sensor, the at least one infrared sensor configured to measure infrared radiation within the measurement wavelength range and disposed such that at least one of the one or more transparent regions is at least partially within a field of view of the at least one infrared sensor; and
a controller configured to perform operations, the operations comprising:
obtaining, from the at least one infrared sensor, one or more first measurements associated with the workpiece;
determining, based at least in part on the one or more first measurements, a temperature of the workpiece when the temperature of the workpiece is less than about 600° C.