Patent ID: 6465369
Filing Date: 2002-10-15
Classification: C23C,H01L

Abstract:
A method for stabilizing a degas temperature of wafers in a degas chamber of semiconductor manufacturing equipment, said method comprising:an idle baking step for setting an electrical heater at an initial output power, wherein the electrical heater is connected with said degas chamber; a first degassing step for heating each wafer for a first period of time to keep the temperature of said each wafer at a predetermined range by setting said electrical heater at a first output power, wherein the first out power is equal to or higher than said initial output power; a second degassing step for heating said each wafer for a second period of time to increase the temperature of said each wafer to a predetermined value by raising the output power of said electrical heater to a second output power; and a third degassing step for heating said each wafer for a third period of time by reducing the output power of said electrical heater to a third output power.