| abstract |
There is a demand for a liquid crystal medium that exhibits stability against heat, light, etc., a wide liquid crystal phase temperature range, a very large dielectric anisotropy, and an optically isotropic liquid crystal phase. In addition, various optical devices which can be used over a wide temperature range, have a short response time, a large contrast ratio, and a low driving voltage are required. An ink composition comprising an achiral component T containing at least one compound selected from the group of compounds represented by the formula (1) and a compound represented by the formula (2), and a chiral agent, Liquid crystal composition exhibiting an isotropic liquid crystal phase. In the formulas (1) and (2), R 1 and R 2 are independently, for example, alkoxyalkyl; Z 11 , Z 12 , Z 21 and Z 22 are independently, for example, a single bond; L 11 to L 13 , L 21 and L 22 are independently, for example, fluorine; Y 1 and Y 2 are independently, for example, fluorine. |