Patent ID: 8415424

Claim:
An aromatic ring-containing polymer for an underlayer of a resist, comprising: a unit structure represented by Chemical Formula 1: wherein, in Chemical Formula 1, p is an integer ranging from 1 to 2, q is an integer ranging from 0 to 5, k is an integer ranging from 1 to 6, and q+k is an integer ranging from 1 to 6; X is a hydroxyl group (—OH), a substituted or unsubstituted C1 to C10 alkoxy group, or a substituted or unsubstituted C6 to C30 aryloxy group; R a is a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C8 cycloalkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C10 alkenyl group, or a halogen; and R b is hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C8 cycloalkyl group, or a substituted or unsubstituted C6 to C30 aryl group; and a unit structure represented by Chemical Formula 2: wherein, in Chemical Formula 2, r is an integer ranging from 1 to 8; and R c is hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C3 to C8 cycloalkyl group, or a substituted or unsubstituted C6 to C30 aryl group.