LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

A liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light and heat, or having a suitable balance regarding at least two of the characteristics; and an AM device having characteristics such as short response time, a large voltage holding ratio, low threshold voltage, a large contrast ratio and long service life are provided. The composition has negative dielectric anisotropy and contains a specific compound having large negative dielectric anisotropy as a first component, a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having negative dielectric anisotropy as a fourth component, or a specific compound having a polymerizable group as an additive component.

主权项

1. A liquid crystal composition that has a negative dielectric anisotropy, and contains at least one compound selected from the group of compounds represented by formula (1) as a first component, and a compound represented by formula (2) as a second component: wherein, in formula (1), R1 and R2 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, alkenyloxy having 2 to 12 carbons, or alkyl having 1 to 12 carbons in which at least one of hydrogen is replaced by fluorine or chlorine; Z1 and Z2 are independently a single bond, ethylene, carbonyloxy or methyleneoxy; and X1, X2, X3 and X4 are independently hydrogen, fluorine or chlorine, wherein, at least one of X1, X2, X3 and X4 is fluorine or chlorine.