Liquid crystal composition and display device including the same

A display device comprising:

• an insulating substrate;
• and
• a liquid crystal layer disposed on the insulating substrate and comprising a compound having a structure represented by formula A-1:
• wherein
• RA1 is an alkyl group, an alkoxy group, a cyano group, a halogen atom, or a hydrogen atom, RA2 is an alkyl group, a cyano group, a halogen atom or a hydrogen atom, ZA is *—O—*, *—COO—*, *—OCO—*, *—CF2O—*, *—OCF2—*, *—CH2O—*, *—OCH2—*, *—SCH2—*, *—CH2S—*, *—C2F4—*, *—CH2CF2—*, *—CF2CH2—*, *—(CH2)k—*, *—CH═CH—*, *—CF═CF—*, *—CH═CF—*, *—CF═CH—*, *—C≡C—*, *—CH═CHCH2O—*, or a single bond, X is a halogen atom, l1 is an integer of 0 to 2, l2 is an integer of 0 to 3, and when l1 is 2
• and ZA in a repeating unit defined by l1 are the same or different, k is an integer of 1 to 5, and “*” indicates a point of attachment.