Patent ID: 6645703
Filing Date: 2003-11-11
Classification: G03F

Abstract:
A method of forming photoresist on a semiconductor wafer, comprising:coating the wafer with a first layer of photoresist, the wafer having the first layer of photoresist thereon being a first photoresist-coated wafer; placing the first photoresist-coated wafer on a temperature-regulated mass to thermally equilibrate the first photoresist-coated wafer to a temperature; after thermally equilibrating the first photoresist-coated wafer, photo-processing the first layer of photoresist; after photo-processing the first layer of photoresist, coating the wafer with a second layer of photoresist, the wafer having the second layer of photoresist thereon being a second photoresist-coated wafer; placing the second photoresist-coated wafer on the temperature-regulated mass to thermally equilibrate the second photoresist-coated wafer to the temperature; and after thermally equilibrating the second photoresist-coated wafer, photo-processing the second layer of photoresist.