| abstract |
There is a need for a liquid crystal medium that exhibits stability to heat, light, etc., a wide liquid crystal phase temperature range, extremely large dielectric anisotropy, and exhibits an optically isotropic liquid crystal phase. Also, various optical elements that can be used in a wide temperature range, have a short response time, a large contrast ratio, and a low driving voltage are required. A liquid crystal composition comprising an achiral component T containing at least one compound (1) represented by formula (1) and a chiral agent, and exhibiting an optically isotropic liquid crystal phase. (In the formula (1), R 1 is, for example, alkyl having 1 to 12 carbon atoms; L 1 , L 2 , and L 3 are each independently hydrogen, fluorine, or chlorine; Y 1 is, for example, fluorine. .) |