Liquid crystal compound having tetrafluoro cyclohexadiene structure showing negative anisotropy, liquid crystal composition, and liquid crystal display device
申请人:JNC CORPORATION
公开号:US10221114B2
公开(公告)日:2019-03-05
A liquid crystal compound is represented by the formula (1). For example, in the formula (1): R1 and R2 each represent an alkyl having 1 to 10 carbon atoms, an alkenyl having 2 to 10 carbon atoms, or an alkoxy having 1 to 9 carbon atoms; a ring A1 and a ring A2 each represent 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z2 each represent a single bond, —(CH2)2—, —CH═CH—, —COO—, —OCO—, —CF2O—, —OCF2—, —CH2O—, or —OCH2—; and a and b each represent 0, 1, 2, or 3 and the sum of a and b is 4 or less.
液晶化合物的结构式如下:在结构式中,R1和R2分别代表具有1至10个碳原子的烷基,具有2至10个碳原子的烯基,或具有1至9个碳原子的烷氧基;环A1和环A2分别代表1,4-环己亚甲基或1,4-苯亚甲基;Z1和Z2分别代表单键,—(CH2)2—,—CH═CH—,—COO—,—OCO—,—CF2O—,—OCF2—,—CH2O—或—OCH2—;a和b分别代表0、1、2或3,且a和b的总和不超过4。