申请人:The Secretary of State for Defence in Her Britannic Majesty's Government
                            
                            
                                公开号:US06106908A1
                            
                            
                                公开(公告)日:2000-08-22
                            
                            Liquid crystalline compounds useful in super twisted nematic liquid crystal displays are described and have the formula: ##STR1## wherein n is 1-5; m is 0-5; p is 0, 1 or 2; q is 0, 1 or 2 p+q is less than or equal to 3; A.sub.1, A.sub.2, A.sub.3 are independently chosen from 1,4-disubstituted benzene 2,5-disubstituted pyrimidine, 1,5-disubstituted pyridine, 2,6-disubstituted naphthalene which may be laterally substituted with F, Cl, Br or CN, trans-1,4-disubstituted cyclohexane 2,5-disubstituted dioxane, 2,5-disubstituted thiophene, 2,5-disubstituted furan, 2,5-disubstituted thiodiazole Z.sub.1 may be COO, OOC, OCH.sub.2, O; Z.sub.2, Z.sub.3 are independently chosen from a direct bond, COO, OOC, C.sub.2 H.sub.4, CH.sub.2 O, OCH.sub.2, C.sub.4 H.sub.8, C.sub.3 H.sub.6 O, (E)--CH.dbd.CHC.sub.2 H.sub.4, (E)--CH.dbd.CHCH.sub.2 O, --C.tbd.C--; R.sub.1 is alkyl, and may contain up to 20 carbon atoms and may be branched or a straight chain; provided that at least one of, A.sub.1, A.sub.2, A.sub.3 is selected from 1,4-disubstituted cyclochexane.
                            本文描述了在超扭曲向列液晶显示器中有用的液晶化合物,其
化学式为:##STR1##
其中n为1-5;m为0-5;p为0、1或2;q为0、1或2;p+q小于或等于3;A.sub.1、A.sub.2、A.sub.3分别选择自1,4-二取代苯、2,5-二取代
嘧啶、1,5-二取代
吡啶、2,6-二取代
萘,它们可以在侧面取代F、Cl、Br或CN、反-1,4-二取代
环己烷、2,5-二取代
二氧六环、2,5-二取代
噻吩、2,5-二取代
呋喃、2,5-二取代
噻二唑;Z.sub.1可能是COO、OOC、OCH.sub.2、O;Z.sub.2、Z.sub.3分别选择自直接键、COO、OOC、C.sub.2 H.sub.4、CH.sub.2 O、OCH.sub.2、C.sub.4 H.sub.8、C.sub.3 H.sub.6 O、(E)--CH.dbd.CHC.sub.2 H.sub.4、(E)--CH.dbd.CHCH.sub.2 O、--C.tbd.C--;R.sub.1是烷基,可含有多达20个碳原子,可以是支链或直链;但至少其中一个A.sub.1、A.sub.2、A.sub.3是1,4-二取代
环己烷。