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    • 13. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE
    • 液晶显示装置
    • WO1997035219A1
    • 1997-09-25
    • PCT/EP1997000844
    • 1997-02-21
    • MERCK PATENT GMBHCOATES, DavidGREENFIELD, SimonGOULDING, MarkHANMER, JamesMARDEN, ShirleyPARRI, Owain, Llyr
    • MERCK PATENT GMBH
    • G02B05/30
    • C09K19/38C09K2219/03G02B5/3016G02F1/133528Y10T428/1041
    • The invention relates to a liquid crystal display device comprising a liquid crystal cell and at least one reflective polarizer or a polarizer combination comprising at least one reflective polarizer as a means to generate circular polarized light, said reflective polarizer comprising an optically active layer of an anisotropic polymer material with a helically twisted planar molecular orientation, wherein the material is oriented so that the axis of the molecular helix extends transversely to the layer, in which 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, characterized in that said reflective polarizer is obtainable by copolymerization of a mixture of a chiral polymerizable mesogenic material comprising: 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, f) optionally a stabilizer. The invention also relates to methods of manufacturing such a reflective polarizer. The invention further relates to a mixture of a chiral polymerizable mesogenic material used for manufacturing such a reflective polarizer.
    • 本发明涉及一种液晶显示装置,其包括液晶单元和至少一个反射偏振器或偏振器组合,其包括至少一个反射偏振器作为产生圆偏振光的装置,所述反射偏振器包括各向异性的光学活性层 具有螺旋扭曲的平面分子取向的聚合物材料,其中材料被定向成使得分子螺旋的轴线横向延伸到该层,其中分子螺旋的间距以这样的方式变化,使得最大间距 并且最小间距为至少100nm,其特征在于,所述反射偏振器可通过手性可聚合介晶材料的混合物的共聚获得,所述手性可聚合介晶材料的混合物包含: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, 的b)至少一个手性可聚合的介晶组合物 d)具有一个可聚合官能团和/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f) 稳定剂 本发明还涉及制造这种反射型偏振器的方法。 本发明还涉及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。
    • 14. 发明申请
    • ELECTROOPTICAL LIQUID CRYSTAL SYSTEM
    • 电液体水晶系统
    • WO1993022397A1
    • 1993-11-11
    • PCT/EP1993000989
    • 1993-04-23
    • MERCK PATENT GMBHCOATES, DavidPARRI, Owain, LlyrGREENFIELD, SimonTILLIN, Martin, DavidGOULDING, Mark, JohnNOLAN, Patrick
    • MERCK PATENT GMBH
    • C09K19/54
    • C09K19/3469C09K19/12C09K19/14C09K19/2007C09K19/322C09K19/3444C09K19/38C09K19/544C09K2019/0448C09K2019/0481Y10T428/10Y10T428/1077
    • Electrooptical system with improved switching time especially at low temperatures: which between 2 electrode layers contains a PDLC film comprising a liquid crystal mixture forming microdroplets in an optically isotropic, transparent polymer matrix, the precursor of the PDLC film comprises one or more monomers, oligomers and/or prepolymers and a photoinitiator, and is cured photoradically, the liquid crystal mixture of which comprises one or more compounds of formula (I) in which Z and Z , independently of one another, are a single bond, -CH2CH2-, -COO-, -OCO- or -C=C-, (a) and (b), independently of one another, are trans-1,4-cyclohexylene, 1,4-phenylene, 2-fluoro-1,4-phenylene, 3-fluoro-1,4-phenylene, 2,3-difluoro-1,4-phenylene or 3,5-difluoro-1,4-phenylene and one of (a) and (b) may also be pyrimidine-2,5-diyl, pyridine-2,5-diyl or trans-1,3-dioxane-2,5-diyl, X and X , independently from one another, are H or F, Q is -CF2, -OCF2, -C2F4, -OC2F4 or a single bond, Y is -H, -F, -C1 or -CN, n is 0, 1 or 2 and R is alkyl having up to 13 C atoms, in which one or two non-adjacent CH2 groups can also be replaced by -O- and/or -CH=CH- and additionally one or more reactive liquid crystalline compounds preferably containing terminal ene-group.
    • 具有改善的切换时间,特别是在低温下的电光学系统:其中2个电极层之间包含PDLC膜,其包含在光学各向同性的透明聚合物基质中形成微滴的液晶混合物,PDLC膜的前体包含一种或多种单体,低聚物和 光学引发剂,并且光电偶联地固化,其液晶混合物包含一种或多种式(I)化合物,其中Z 1和Z 2彼此独立地是单键, -CH 2 CH 2 - , - COO-,-OCO-或-C = C - ,(a)和(b)彼此独立地为反式-1,4-亚环己基,1,4-亚苯基, 1,4-亚苯基,3-氟-1,4-亚苯基,2,3-二氟-1,4-亚苯基或3,5-二氟-1,4-亚苯基和(a)和(b)之一可以 吡啶-2,5-二基或反式-1,3-二恶烷-2,5-二基,X 1和X 2彼此独立地为H或 F,Q是-CF 2,-OCF 2,-C 2 F 4,-OC 2 F 4或单键,Y是-H,-F, -C 1或-CN,n为0,1或2,R为具有多达13个C原子的烷基,其中一个或两个不相邻的CH 2基团也可以被-O-和/或-CH = CH- 以及另外一种或多种优选含有末端烯基的反应性液晶化合物。