| 主权项 |
1. An optical film consisting of a polymer consisting of a repeating unit represented by Chemical Formula 2: wherein in Chemical Formula 2, R1 and R2 are the same or different and are each independently hydrogen, a substituted or unsubstituted C1 to C10 aliphatic group, a substituted or unsubstituted C3 to C30 alicyclic group, or a substituted or unsubstituted C2 to C30 heterocyclic group; wherein the aliphatic group, the alicyclic group, and the heterocyclic group are present singularly; or at least two of the alicyclic group, and the heterocyclic group are linked to provide a fused cyclic group; or at least two of the aliphatic group, the alicyclic group, and the heterocyclic group are linked via a single bond, or a functional group selected from —O—, —S—, —C(═O)—, —CH(OH)—, —S(═O)2—, —Si(CH3)2—, —(CH2)p— (wherein 1≦p≦10), —(CF2)q— (wherein 1≦q≦10), —C(CH3)2—, —C(CF3)2— and —C(═O)NH—; and x and y are the same or different and are each an integer greater than 0; and wherein the optical film has a short wavelength dispersion of an in-plane phase-difference value (450 nm/550 nm) being less than or equal to about 1.0, and a long wavelength dispersion of an in-plane phase-difference value (650 nm/550 nm) being greater than or equal to about 1.0. |
