| abstract |
The present invention provides a liquid crystal composition having a high upper limit temperature in a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, an appropriate optical anisotropy, a large dielectric anisotropy, a large specific resistance, Among the characteristics such as high stability of ultraviolet rays and high stability against heat, at least one characteristic is satisfied or at least two characteristics are appropriately balanced. The present invention also provides an AM device which has a short response time, a large voltage holding ratio, a large contrast ratio, a long life, and the like. The liquid crystal composition of the present invention contains a specific compound having a large dielectric anisotropy as a first component, and a specific compound having a small viscosity as a second component, and may also have a high upper limit temperature or a small viscosity. The specific compound is a third component and a specific compound having a large dielectric anisotropy as a fourth component, and has a nematic phase, and the liquid crystal display device of the present invention contains the composition. |