| abstract |
A liquid-crystal composition is composed of at least one chiral compound represented by general formula (K1) or (K2) and at least one achiral liquid-crystal component: n n n n n n n n n n (wherein, in formulas (K1) and (K2), R k1 is, for example, alkyl having 1 to 5 carbons, R k2 is, for example, alkyl having 1 to 20 carbons, ring A k1 is, for example, 1,4-phenylene, X k1 is, for example, a single bond, Y k1 is, for example, —(CH 2 ) n —, n is an integer from 0 to 20, Z k1 is, for example, a single bond, mk1 is, for example, an integer from 2 to 4, and nk1 and nk2 are, for example, an integer from 0 to 2). |