Polarizing plate composition, polarizing plate protective film, polarizer, polarizing plate, liquid crystal display device, and compound used in the liquid crystal display device

A compound represented by the following Formula (III),

• wherein in Formula (III), R1a represents a methylene group substituted with a heteroatom, an ethylene group substituted with an electron-withdrawing group, an acyl group, a carbamoyl group in which at least one of hydrogen atoms is substituted with a group independently selected from an alkyl group, a cycloalkyl group, or an aryl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a silyl group, or an alkylsulfonyl or arylsulfonyl group, and R2a represents an alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkenyl group, an aryl group, a nitro group, a heterocyclic group, or a halogen atom;
• each of Ya1 and Yb1 independently represents —C(Rx1)(Rx2)—, —N(Ra)—, —O—, or —S—;
• at least one of Ya1 and Yb1 is —N(Ra)—;
• each of Rx1 and Rx2 independently represents a hydrogen atom or a substituent;
• Ra represents a hydrogen atom or a substituent;
• Rx1, Rx2, and Ra may form a ring by being bonded to L;
• L represents a single bond or a divalent linking group;
• and each of these groups may be further substituted with a substituent.