Patent ID: 9063420
Filing Date: 2015-06-23
Classification: G03F

Abstract:
1. A photoresist composition comprising: a polymer comprising a plurality of repeat units having the structure wherein each occurrence of R 1 and R 2 is independently hydrogen, unsubstituted or substituted C 1-18 linear or branched alkyl, unsubstituted or substituted C 3-18 cycloalkyl, unsubstituted or substituted C 6-18 aryl, or unsubstituted or substituted C 3-18 heteroaryl; and R 1 and R 2 are optionally covalently linked to each other to form a ring that includes —R 1 —C—R 2 —; each occurrence of Ar 1 , Ar 2 , and Ar 3 is independently an unsubstituted or substituted C 6-18 arylene, or unsubstituted or substituted C 3-18 heteroarylene; wherein at least one occurrence of R 1 , R 2 , Ar 1 , Ar 2 , and Ar 3 is substitured with at least one functional group selected from hydroxyl, acetal, ketal, ester, and lactone; and a photoactive component selected from photoacid generators, photobase generators, photoinitiators, and combinations thereof.