Polymer for organic anti-reflective coating layer and composition including the same

A composition for forming an organic anti-reflective coating layer, comprising:

• a polymer represented by following Formula 1:
• a light absorber;
• and
• an organic solvent,
• wherein in Formula 1, R is hydrogen atom, C1˜C20 alkyl group, C1˜C10 alcohol group or epoxy group, R1 is independently hydrogen atom,
• n is an integer of 1-50, R2 is C1˜C20 alkyl group, C3˜C20 cycloalkyl group, C6˜C20 aryl group or C7˜C12 arylalkyl group, R3 is hydrogen atom, C1˜C10 alcohol group or epoxy group and POSS is a polyhedral oligosilsesquioxane, and
• wherein amount of the light absorber is 0.1˜30 weight % with respect to total amount of the composition for forming an organic anti-reflective coating layer and amount of the organic solvent is 40˜99.8 weight % with respect to total amount of the composition for forming an organic anti-reflective coating layer,
• wherein the light absorber is represented by following Formula 5:
• in Formula 5, R4 to R12 are independently hydrogen atom, hydroxyl group, halogen atom, nitro group, amino group, C1˜C8 alkyl group with or without hydroxyl group, C1 ˜C8 alkoxy group with or without carbonyl group, phenyl group, C5 ˜C10 cycloalkyl group, aryl-alkyl group, alkyl-aryl group, and at least one of R4 to R12 is not hydrogen atom.