Patent ID: 8609207

Claim:
A liquid crystal composition having a nematic phase and including at least one optically active compound selected from the group of compounds represented by formula (1) as a first component, and including at least one compound selected from the group of compounds represented by formula (2) as a second component: wherein R 1 is alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; R 2 and R 3 are different each other, and are alkyl having 1 to 12 carbons or alkenyl having 2 to 12 carbons; R 4 and R 5 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; and ring A is 1,4-cyclohexylene or 1,4-phenylene; ring B and ring C are independently 1,4-cyclohexylene or 1,4-phenylene; Z 1 is independently a single bond, ethylene or carbonyloxy; and p is 1 or 2.