Patent ID: 7150961

Claim:
A resist flow process for forming a photoresist pattern comprising the steps of: (a) forming a first photoresist pattern on a substrate using a photoresist composition comprising a photoresist polymer, a photo acid generator, an organic solvent, and an additive selected from the group consisting of compounds of the following Formulas 3 to 7: wherein said photoresist polymer is a compound selected from the group consisting of the following Formulas 8 and 9: wherein, R 1 is an acid labile protecting group: R 2 is hydrogen; R 3 is selected from the group consisting of hydrogen, C 1 –C 10 alkyl, C 1 –C 10 alkoxyalkyl, and C 1 –C 10 alkyl containing at least one hydroxyl group (—OH); n is an integer from 1 to 5; and w+x+y=50 mol %, and z is 50 mol %; and (b) performing resist flow process onto the first photoresist pattern to obtain a second photoresist pattern.