Monomer, polymer, compensation film, optical film, and display device

A monomer represented by Chemical Formula 1-1:

• wherein, in Chemical Formula 1-1,
• Z is —C═O—, —(C═O)O—, —O(C═O)—, —CH2O—, —CF2O—, —OC(═O)O—, —C≡C—, —CH═CH—, —CF═CF—, or —C(═O)NRa—,
• L1 and L2 are independently a single bond, a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C3 to C20 oxycycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, a substituted or unsubstituted C6 to C20 oxyarylene group, a substituted or unsubstituted C3 to C20 divalent heterocyclic group, or a combination thereof,
• R1 to R6 and Ra are independently hydrogen, a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C2 to C20 alkoxyalkyl group, a substituted or unsubstituted C1 to C20 fluoroalkyl group, a substituted or unsubstituted C3 to C20 cycloalkyl group, a substituted or unsubstituted C3 to C20 cycloalkyloxy group, a substituted or unsubstituted C4 to C20 cycloalkoxyalkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C6 to C20 aryloxy group, a substituted or unsubstituted C7 to C20 arylalkyl group, a substituted or unsubstituted C7 to C20 aryloxyalkyl group, a substituted or unsubstituted C3 to C20 heterocyclic group, a substituted or unsubstituted silyl group, a hydroxy group, a halogen, a nitro group, or a combination thereof,
• n and m are independently 0 or 1,
• p is an integer ranging from 1 to 3,
• a to f are independently integers ranging from 0 to 4, and
• a+b, c+d, and e+f are independently integers of less than or equal to 4.