| 摘要 |
To provide a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, and so forth. To provide an AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. The liquid crystal composition contains a specific compound having a polymerizable group as a first component and a specific compound having a large negative dielectric anisotropy and a low minimum temperature as a second component, and may contain a specific compound having a small viscosity or a large maximum temperature as a third component, and a liquid crystal display device includes the composition. |
| 主权项 |
1. A liquid crystal composition containing at least one compound selected from the group of compounds represented by formula (1) as a first component and at least one compound selected from the group of compounds represented by formula (2) as a second component:wherein R1, R2, R3 and R4 are independently hydrogen, hydroxy, alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine, or a polymerizable group, and at least one of R1, R2, R3 and R4 is a polymerizable group; R5 and R6 are independently alkyl having 1 to 12 carbons, alkoxy having 1 to 12 carbons, alkenyl having 2 to 12 carbons, or alkenyl having 2 to 12 carbons in which arbitrary hydrogen is replaced by fluorine; ring A and ring C are independently 1,4-cyclohexylene, 1,4-phenylene in which arbitrary hydrogen may be replaced by fluorine or chlorine, or tetrahydropyran-2,5-diyl; ring B is 2,3-difluoro-1,4-phenylene, 2-chloro-3-fluoro-1,4-phenylene, 2,3-difluoro-5-methyl-1,4-phenylene, 3,4,5-trifluoronaphthalene-2,6-diyl or 7,8-difluorochroman-2,6-diyl; Z Z2, Z3 and Z4 are independently a single bond, oxygen, carbonyloxy, alkylene having 1 to 12 carbons or alkylene having 1 to 12 carbons in which arbitrary —CH2— is replaced by —O—; Z5 and Z6 are independently a single bond, or ethylene; m is 1, 2 or 3; and n is 0 or 1, and a sum of m and n is 3 or less. |
