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    • 2. 发明授权
    • Liquid crystal display device
    • 液晶显示装置
    • US06669865B1
    • 2003-12-30
    • US09696282
    • 2000-10-26
    • David CoatesSimon GreenfieldMark GouldingJames HanmerShirley MardenOwain Llyr Parri
    • David CoatesSimon GreenfieldMark GouldingJames HanmerShirley MardenOwain Llyr Parri
    • C09K1938
    • C09K19/38C09K2219/03G02B5/3016G02F1/133528Y10T428/1041
    • A liquid crystal display device containing a liquid crystal cell and at least one reflective polarizer or a polarizer combination having at least one reflective polarizer as a means to generate circular polarized light. The reflective polarizer includes an optically active layer of an anisotropic polymer material with a helically twisted planar molecular orientation. The material is oriented so that the axis of the molecular helix extends transversely to the layer, and the pitch of the molecular helix is varied in such a manner that the difference between the maximum pitch and the minimum pitch is at least 100 nm. The reflective polarizer is obtainable by copolymerization of a mixture of a chiral polymerizable mesogenic material including a) at least one achiral polymerizable mesogenic compound having at least one polymerizable functional group in the presence of b) at least one chiral polymerizable mesogenic compound having one polymerizable functional group and/or at least one non-polymerizable chiral mesogenic compound, c) an initiator, d) optionally a non-mesogenic compound having at least one polymerizable functional group, e) optionally a dye and, i) optionally a stabilizer. The invention also discloses methods of manufacturing such a reflective polarizer. The invention further discloses a mixture of a chiral polymerizable mesogenic material used for manufacturing such a reflective polarizer.
    • 一种液晶显示装置,其包含液晶单元和至少一个反射偏振器或具有至少一个反射偏振器的偏振器组合,作为产生圆偏振光的手段。 反射偏振器包括具有螺旋扭曲的平面分子取向的各向异性聚合物材料的光学活性层。 该材料被定向成使得分子螺旋线的轴线横向延伸,并且分子螺旋线的间距以最大间距和最小间距之差至少为100nm的方式变化。 反射型偏振片可通过手性可聚合介晶材料的混合物共聚获得,该混合物包括:a)至少一种具有至少一个可聚合官能团的非手性可聚合介晶化合物,其中b)至少一种具有一个可聚合官能团的手性可聚合介晶化合物 基团和/或至少一种不可聚合的手性介晶化合物,c)引发剂,d)任选的具有至少一个可聚合官能团的非介晶化合物,e)任选的染料和i)任选的稳定剂。 本发明还公开了制造这种反射偏振器的方法。 本发明还公开了用于制造这种反射偏振器的手性可聚合介晶材料的混合物。
    • 4. 发明授权
    • Naphthalene derivatives
    • 萘衍生物
    • US5942648A
    • 1999-08-24
    • US811179
    • 1997-03-04
    • David CoatesMark GouldingSimon GreenfieldVolker ReiffenrathReinhard HittichHerbert Plach
    • David CoatesMark GouldingSimon GreenfieldVolker ReiffenrathReinhard HittichHerbert Plach
    • C07C17/26C07C25/22C07C43/225C07C43/23C07C255/50C07C255/54C09K19/32C07C15/24
    • C07C17/263C07C25/22C07C255/50C07C255/54C07C43/225C07C43/23C09K19/322
    • Naphthalene derivatives of the fomula I ##STR1## in which: R.sup.1 is an alkyl or alkenyl radical which is unsubstituted, monosubstituted by CH or CF.sub.3 or monosubstituted by halogen and has 1 to 15 carbon atoms, it also being possible for one or more CH.sub.2 groups in these radicals to be replaced, in each case independently of one another, by --O--, --S--, ##STR2## --CO--, --CO--O--, --O--CO-- or --O--CO--O-- in such a manner that oxygen atoms are not linked directly to one another, ##STR3## m is 0, 1 or 2, n is 0 or 1, wherem+n is 1 or 2,Z.sup.1 and Z.sup.2 are each, independently of one another, --CH.sub.2 CH.sub.2 --, --C.tbd.C-- or a single bond,L.sup.1 and L.sup.2 independently of one another, are H or F,x is an alkyl or alkoxy radical which is unsubstituted, monosubstituted by CN or CF.sub.3 or substituted bi halogen and has 1 to 15 carbon atoms, or is OH, CN, SCN, OCN, NCS or Q--Y,whereQ is a single bond, (CF.sub.2).sub.r or O(CF.sub.2).sub.rr is 1 or 2, andY is H, F, Cl or Br, with the provisos thata) in the case wherem=0, Z.sup.2 =a single bond, n=1 and x=CH CF.sub.3 or SCN, L.sup.1 is F,b) in the case wherem=0, Z.sup.2 =a single bond, n=1 and X=alkyl, alkoxy or F a L.sup.1 and L.sup.2 are identical and are F.
    • 式I的萘衍生物,其中:R 1是未被取代的,被CH或CF 3单取代或被卤素单取代且具有1至15个碳原子的烷基或烯基,它们也可以在这些基团中一个或多个CH 2基团 在各种情况下彼此独立地被-O-,-S-,-CO-,-CO-O-,-O-CO-或-O-CO-O-取代,使得氧 原子不直接相互连接,m为0,1或2,n为0或1,其中m + n为1或2,Z 1和Z 2各自独立地为-CH 2 CH 2 - , - CO 3 C或单键,L 1和L 2彼此独立地是H或F,x是未被取代的,被CN或CF 3或被取代的双卤素单取代且具有1至15个碳原子的烷基或烷氧基,或者是 OH,CN,SCN,OCN,NCS或QY,其中Q为单键,(CF2)r或O(CF2)rr为1或2,Y为H,F,Cl或Br,条件是 )在m = 0的情况下,Z2 =单键,n = 1,x = CH CF 3或SCN,L1为F,b) 在m = 0的情况下,Z 2 =单键,n = 1,X =烷基,烷氧基或F a,L1和L2相同,为F.