A liquid crystal polymer, comprising a first repeating unit, a second repeating unit, a third repeating unit, a fourth repeating unit, and a fifth repeating unit, wherein the first repeating unit has a structure of Formula (I), the second repeating unit has a structure of Formula (II), the third repeating unit has a structure of Formula (III), the fourth repeating unit has a structure of Formula (IV), and the fifth repeating unit has a structure of Formula (V), a structure of Formula (VI), or a structure of Formula (VII)
- wherein A1, A2, A3, and A4 are independently A5, or A5-X2-A6, A5 and A6 are independently
- X1 is —O—, —NH—, or
- X2 is single bond, —O—, —NH—,
- C1-C8 alkylene group, C5-C8 cycloalkylene group, or
- Z1 is C2-C20 alkenylene group, or substituted C2-C20 alkenylene group;
- R1 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, C1-C6 fluoroalkyl group, or C6-C12 aryl group;
- R2 is
- R3 is independently hydrogen, fluorine, chlorine, C1-C6 alkyl group, or C1-C6 fluoroalkyl group;
- R4 is independently hydrogen, fluorine, chlorine, cyano group, C1-C6 alkyl group, C1-C6 fluoroalkyl group, C1-C6 alkoxy group, C1-C6 alkylthio group, C1-C6 cyanoalkyl group, C6-C12 aryl group, C7-C18 arylalkyl group, C6-C12 aryloxy group, or C6-C12 arylthio group;
- X3 is single bond, —O—, —NH—,
- Z2 is single bond or C1-C8 alkylene group;
- R5 is C2-C20 alkenyl group, acrylate group, methacrylate group,
- and, Q is combined with the carbon atoms which they are attached to, to form a C4-C8 cycloalkene, non-substituted norbornene, non-substituted 7-oxanorbornene, substituted norbornene, or substituted 7-oxanorbornene.