Patent ID: 6368771
Filing Date: 2002-04-09
Classification: G03F

Abstract:
A photoresist polymer comprising repeating units derived from (a) a compound of the following Chemical Formula 1; (b) a compound of the following Chemical Formula 2; and (c) a compound of the following Chemical Formula 3; wherein, R is substituted or unsubstituted linear or branched (C1-C10) alkylene, substituted or unsubstituted (C2-C10) alkylene comprising an ether linkage, substituted or unsubstituted (C2-C10) alkylene comprising an ester linkage, or substituted or unsubstituted (C3-C10) alkylene comprising a ketone moiety; X and Y are independently CH2, CH2CH2, oxygen or sulfur; and i is an integer from 0 to 2; wherein, V and W are independently CH2, CH2CH2, oxygen or sulfur; R* is an acid-labile group; and j is an integer from 0to 2; wherein, R3 represents hydrogen or methyl; R4 is substituted or unsubstituted linear or branched (C1-C10) alkylene; Râ€², Râ€³ and Râ€²â€³ are independently substituted or unsubstituted linear or branched (C1-C5) alkyl.