| 摘要 |
A liquid crystal composition includes a tolan liquid crystal compound having a large optical anisotropy, another tolan liquid crystal compound having a large optical anisotropy and a high N-I point, a low-viscosity polycyclic liquid crystal compound (wherein the rings are directly bonded together) having an alkyl or alkoxy group, and a polycyclic liquid crystal compound (wherein the rings are directly bonded together) having a large optical anisotropy and a cyano group with a large dielectric anisotropy DELTA epsilon . These compounds are mixed so as to obtain a positive dielectric anisotropy.
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