摘要:
The present invention provides precise temperature estimation in a heat treatment apparatus that estimates temperatures of process objects by using a thermal model and performs a heat treatment while performing a temperature control based on the estimated temperatures. The heat treatment apparatus 1 includes a processing vessel 11 accommodating plural wafers W, plural heaters 31 to 33 and plural temperature sensors S1 to S5, and stores the thermal model. The heat treatment apparatus 1 estimates temperatures of the wafers W based on outputs of the temperature sensors S1 to S5 by using the thermal model and controls the heaters 31 to 33 based on the estimated temperatures, applying a heat treatment to the wafers W. The thermal model for an individual apparatus is made by calibrating a standard thermal model designed for a standard apparatus. The standard model calibration is performed by heating an interior of the processing vessel 11, measuring the temperatures of the wafers W in the processing vessel 11, estimating the temperatures of the wafers W by using the thermal model, comparing the measured temperature and the estimated temperature, and calibrating the standard thermal model so that the measured temperature substantially coincide with the estimated temperature.
摘要:
The present invention provides precise temperature estimation in a heat treatment apparatus that estimates temperatures of process objects by using a thermal model and performs a heat treatment while performing a temperature control based on the estimated temperatures. The heat treatment apparatus (1) includes a processing vessel (11) accommodating plural wafers W, plural heaters (31 to 33) and plural temperature sensors (S1 to S5), and stores the thermal model. The heat treatment apparatus 1 estimates temperatures of the wafers W based on outputs of the temperature sensors (S1 to S5) by using the thermal model and controls the heaters (31 to 33) based on the estimated temperatures, applying a heat treatment to the wafers W. The thermal model for an individual apparatus is made by calibrating a standard thermal model designed for a standard apparatus. The standard model calibration is performed by heating an interior of the processing vessel (11), measuring the temperatures of the wafers W in the processing vessel (11), estimating the temperatures of the wafers W by using the thermal model, comparing the measured temperature and the estimated temperature, and calibrating the standard thermal model so that the measured temperature substantially coincides with the estimated temperature.
摘要:
The thermal processing apparatus of the present invention includes: a processing container for containing an object to be processed; a plurality of heaters for heating the object to be processed; a plurality of temperature sensors for respectively detecting temperatures at a plurality of predetermined positions in the processing container; a storing part that stores: a thermal model for forecasting a temperature of the object to be processed contained in the processing container from outputs of the plurality of temperature sensors, and a recipe in which a desired temperature of the object to be processed is defined; and a controlling part that forecasts a temperature of the object to be processed by using the outputs of the plurality of temperature sensors and the thermal model, and that controls the plurality of heaters so as to cause the forecasted temperature of the object to be processed to coincide with the desired temperature of the object to be processed defined in the recipe. The thermal model is configured to forecast, from the outputs of the plurality of temperature sensors, not only a temperature of the object to be processed contained in the processing container but also a temperature of at least one other predetermined portion in the processing container. A desired temperature of the predetermined portion is also defined in the recipe. The controlling part is adapted to forecast a temperature of the object to be processed and a temperature of the predetermined portion by using the outputs of the plurality of temperature sensors and the thermal model, and to control the plurality of heaters so as to cause the forecasted temperature of the object to be processed and the forecasted temperature of the predetermined portion to respectively coincide with the desired temperature of the object to be processed and the desired temperature of the predetermined portion defined in the recipe.
摘要:
Temperature control is made without the risk of contaminating object-to-be-processed and with high accuracy. Temperatures are metered out of contact with the objects-to-be-processed, and based on a metered result, estimated temperatures of the objects-to-be-processed are computed. Furthermore, estimation errors of the estimated temperatures are computed to correct the estimated temperatures. Based on a temperature recipe stating relationships between set temperatures and times and the corrected estimated temperatures, a heater is controlled.