Patent ID: 6746237
Filing Date: 2004-06-08
Classification: H01L

Abstract:
A method for successively heat treating a series of substrates within a heating chamber comprising a heating body having a boundary surface that faces the substrates, the method comprising:supplying power to the heating body such that the heating body can reach a target temperature; positioning a first substrate adjacent the boundary surface of the heating body; measuring the temperature in the heating body at a location in the heating body sufficiently close to the boundary surface to detect heat withdrawal from the heating body upon loading substrates; removing the first substrate from the heating chamber before the measured temperature of the heating body reaches a trigger temperature; positioning a second substrate in the heating chamber adjacent the boundary surface when the measured temperature reaches the trigger temperature; measuring the temperature of the heating body at the location; and removing the second substrate from the heating chamber before the measured temperature of the heating body reaches the trigger temperature again.