| abstract |
A novel polymer applied to a compensation film, a compensation film containing the polymer, an optical film comprising the compensation film and a polarizer, and a display device comprising the compensation film or the optical film are provided. A polymer comprising a structural unit represented by Formula 1. (L1 is a single bond, O, C (═O), C (═O) O or C (═O) NRa; R1 to R5 and Ra are each independently H, alkyl, alkoxy, cycloalkyl, aryl, nitro, etc. N1 is an integer of 1 to 5) [Selection] FIG. |