Patent ID: 7026171

Claim:
A rapid thermal annealing (RTA) process of a first RTA equipment, wherein the first RTA equipment has a pyrometer for measuring a temperature of the RTA process, the RTA process comprising the following steps: loading a wafer into a reaction chamber of the first rapid thermal annealing (“RTA”) equipment; proceeding a hold temperature step to maintain the reaction chamber at a first temperature; proceeding a first ramp up step to ramp up the first temperature to a second temperature of the reaction chamber; proceeding a stable temperature step to maintain the reaction chamber at the second temperature; proceeding a second ramp up step to ramp up the second temperature to a main process temperature of the reaction chamber; processing a first RTA step by maintaining the reaction chamber at the main process temperature; comparing a measured value of an operation parameter with a preset corresponding reference range of value of a normal RTA process; and proceeding a second RTA step by maintaining the reaction chamber at the main process temperature when the measured value of the operation parameter is within the corresponding reference range of value of the normal RTA process, wherein when the measured value of the operation parameter exceeds the preset corresponding reference range of value of the normal RTA process, the first RTA step is terminated without proceeding with the second RTA step; and proceeding a cool down step to cool down the main process temperature to the first temperature of the reaction chamber.