Patent ID: 7829269

Claim:
A method of patterning a substrate, comprising: forming a layer of radiation-sensitive material on a substrate, said layer of radiation-sensitive material comprises a first photo-acid generator and a second photo-acid generator; performing a patterned exposure of said layer of radiation-sensitive material to electromagnetic (EM) radiation; and performing a flood exposure of said layer of radiation-sensitive material to electromagnetic (EM) radiation, wherein said patterned exposure, or said flood exposure, or both said patterned exposure and said flood exposure contain a first wavelength or first range of wavelengths, and a second wavelength or second range of wavelengths, wherein said first photo-acid generator generates acid in said layer of radiation-sensitive material when exposed to said EM radiation at said first wavelength or first range of wavelengths, and wherein said second photo-acid generator generates acid in said layer of radiation-sensitive material when exposed to EM radiation at a second wavelength or second range of wavelengths.