Patent ID: 7781157

Claim:
A method for generating a photoresist image on a substrate comprising: (a) coating the substrate with a photoresist film; (b) coating the film with a terpolymer consisting essentially of the three monomer: (i) 1,1,1-trifluoro-2-trifluoromethyl-2-hydroxy-6-methyl-hept-6-yl-methacrylate, (ii) 5-(3,3,3-trifluoro-2-hydroxy-2-(trifluoromethyl)propyl)bicyclo[2.2.1]heptanyl methacrylate, and (iii) 4-oxa-tricyclo[4.2.1.0 3,7 ] non-5-one-2yl methacrylate; (c) imagewise exposing the film to radiation while a liquid is disposed on the film; (d) heating the film; and (e) developing the image to the substrate.