发明申请
US20020033472A1 Difluorovinyl compound, liquid crystal composition and liquid crystal display 有权
二氟乙烯基化合物,液晶组合物和液晶显示

Difluorovinyl compound, liquid crystal composition and liquid crystal display
摘要:
Provided are a liquid crystalline compound having a wide liquid crystal phase temperature range, low viscosity, a large elastic constant ratio K33/K11 and excellent solubility at low temperature, a liquid crystal composition using the same and a liquid crystal display. Provided is a novel difluorovinyl compound is represented by Formula (1): 1 wherein Y1 represents H or a straight chain or branched alkyl group having 1 to 10 carbon atoms, and optional nullC2null in the above alkyl group may be replaced by nullOnull or nullCnullCHnull, but nullOnull is not adjacent to each other, and at least one H in Y1 may be substituted with halogen or a cyano group; A1, A2, A3 and A4 each independently represent 1,4-cyclohexenylene in which optional nullC2null which is not adjacent to each other may be replaced by nullOnull, 1,4-phenylene in which optional H may be substituted with halogen, and a single bond, in which at least two of A1, A2, A3 and A4 have the ring structure described above, and at least one of them is 1,4-cyclohexenylene in which nullC2null is replaced by nullOnull; Z1, Z2 and Z3 each independently represent a single bond, null(CH2)2null, nullCnullCHnull, null(CH2)4null, nullO(CH2)3null or null(CH2)3Onull; n represents 0 or an integer of 1 to 10, provided that when any of A1, A2, A3 and A4 is 1,4-phenylene, Z1, Z2 and Z3 are single bonds, and among them, when A1 is 1,3-dioxane-2,5-diyl and A2 is 1,4-phenylene and when A3 is 1,4-cyclohexylene and A4 is a single bond, Y1 is H, and n is not 0.
信息查询
0/0