Patent ID: 11923254
Assignee: ZING SEMICONDUCTOR CORPORATION
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A method for detecting temperature of a thermal chamber comprising:
Step S1: conducting a thermal treatment at a predicted temperature to a selected silicon wafer within the thermal chamber, wherein the predicted temperature comprises plural temperature points set in order; obtaining haze values corresponding to the predicted temperature points; obtaining a linear relationship I between the temperature of the thermal chamber and the haze of the wafer;
Step S2: polishing and washing the wafer;
Step S3: repeating the Step S1 to conduct the thermal treatment to the polished wafer within the thermal chamber; obtaining a linear relationship II between the temperature of the thermal chamber and the haze of the polished wafer; and
Step S4: calculating a difference of the haze at the same temperature point between the Steps S1 and S3, and obtaining an actual temperature difference of the thermal chamber based on the difference of the haze.