Patent ID: 8841218

Claim:
A resist underlayer composition, comprising: a solvent; and an organosilane condensation polymerization product prepared by conducting a condensation polymerization of hydrolyzed products produced from a compound represented by Chemical Formula 1, a compound represented by Chemical Formula 2, and a compound represented by Chemical Formula 3: [R 1 O] 3 Si—X [Chemical Formula 1] wherein, in Chemical Formula 1, R 1 is a substituted or unsubstituted C1 to C6 alkyl group, and X is a substituted or unsubstituted C6 to C30 aryl group, [R 2 O] 3 Si—R 3 [Chemical Formula 2] wherein, in Chemical Formula 2, R 2 is a substituted or unsubstituted C1 to C6 alkyl group, and R 3 is a substituted or unsubstituted C1 to C 12 alkyl group, [R 4 O] 3 Si—O—Si[OR 5 ] 3 [Chemical Formula 3] wherein, in Chemical Formula 3, R 4 and R 5 are each independently a substituted or unsubstituted C1 to C6 alkyl group.