An optically anisotropic layer is formed by a liquid crystal compound represented by General Formula 1, in which the long axes of the molecules are oriented.
wherein L1 and L2 independently represent a linking group having a carbonyl group; F1 and F2 independently represent an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or a halogen atom; n and m independently represent an integer from 0 to 4; a and b independently represent an integer from 1 to 4; T1 and T2 independently represent a spacer portion including a straight chain or branched alkylene or alkylene oxide group having 2 to 20 carbon atoms; and Ar represents a divalent group having at least one aromatic ring selected from a group consisting of aromatic hydrocarbon rings and aromatic heterocycles, the number of Π electrons in the Ar group being 8 or greater.
光学各向异性层是由通式 1 所表示的液晶化合物形成的,其中分子的长轴是定向的。
其中 L1 和
L2 分别代表具有羰基的连接基团;F1 和 F2 分别代表具有 1 至 4 个碳原子的烷基、具有 1 至 4 个碳原子的烷氧基或卤素原子;n 和 m 分别代表 0 至 4 的整数;a 和 b 分别代表 1 至 4 的整数;T1 和 T2 独立地代表包括具有 2 至 20 个碳原子的直链或支链亚烷基或氧化亚烷基的间隔部分;以及 Ar 代表具有至少一个芳香环的二价基团,该芳香环选自由
芳香烃环和芳香杂环组成的组,Ar 基团中的Π 电子数为 8 或更多。