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    • 1. 发明授权
    • Monostable ferroelectric liquid crystal display apparatus
    • 单稳态铁电液晶显示装置
    • US06551669B2
    • 2003-04-22
    • US09783859
    • 2001-02-15
    • Teiichiro NishimuraMakoto JisakiTadaaki IsozakiEiji OkabeRyushi ShundoHideo Saito
    • Teiichiro NishimuraMakoto JisakiTadaaki IsozakiEiji OkabeRyushi ShundoHideo Saito
    • G02F1133
    • C09K19/0225C09K19/3458C09K19/42G02F1/141Y10T428/10Y10T428/1036
    • The present invention provides a monostable ferroelectric liquid crystal display apparatus includes a pair of substrates, each subjected to uniaxial orientation processing and arranged so that their orientation processing directions are approximately parallel to each other; and a ferroelectric liquid crystal material having the chiral smectic C phase filled between the substrates, the liquid crystal material being such that the projection component of the cone drawn by a liquid crystal molecule of the ferroelectric liquid crystal material projected onto the substrate and the projection component of the liquid crystal molecule itself projected onto the substrate in the molecule axis direction are respectively identical to the orientation processing direction of the substrates, which state is the initial state of the monostable configuration, wherein the ferroelectric liquid crystal contains a compound having a phenyl pyrimidine skeleton having one end connected to an alkoxyl chain and the other end connected to an alkyl chain, wherein sum of carbons in the alkoxyl chain and the alkyl chain is 15. This enables to realize a monostable mode with a sufficient stability even at low temperature and a sufficient analog tone and contrast ratio.
    • 本发明提供一种单稳态铁电液晶显示装置,包括:一对基板,各自进行单轴取向处理,并使其取向处理方向大致平行; 以及在基板之间填充有手性近晶C相的铁电液晶材料,液晶材料使得由突出于基板上的强电介质液晶材料的液晶分子拉出的锥体的投影分量和投影部件 在分子轴方向上投射到基板上的液晶分子本身分别与基板的取向处理方向相同,该状态是单稳态结构的初始状态,其中铁电液晶含有具有苯基嘧啶的化合物 骨架的一端连接到烷氧基链,另一端连接到烷基链,其中烷氧基链和烷基链中的碳的和为15.这使得即使在低温下也能实现具有足够稳定性的单稳态模式, 足够的模拟音调和对比度。
    • 2. 发明授权
    • Monostable ferroelectric liquid crystal display apparatus
    • 单稳态铁电液晶显示装置
    • US06436490B1
    • 2002-08-20
    • US09559460
    • 2000-04-28
    • Teiichiro NishimuraKeiichi NitoTadaaki IsozakiEiji OkabeRyushi ShundoHideo Saito
    • Teiichiro NishimuraKeiichi NitoTadaaki IsozakiEiji OkabeRyushi ShundoHideo Saito
    • C09K1934
    • C09K19/3458C09K19/0225G02F1/1416Y10T428/10
    • A monostable ferroelectric liquid crystal display in which a stable monostable mode is realized to achieve sufficient analog gradation and contrast. A pair of substrates, processed with uniaxial orientation, are placed so that the directions of orientation processing will be substantially parallel to each other. Into the gap between the two substrates is charged a ferroelectric liquid crystal material. The component of projection on the substrates of the axial direction of a cone drawn by the liquid crystal molecules of the ferroelectric liquid crystal material and that of the axial direction of the liquid crystal molecules themselves are substantially coincident with the direction of the processing for orientation of the substrates. Monostability is achieved with this state as an initial state. The ferroelectric liquid crystal material is a liquid crystal composition including a compound comprised of a phenyl pyrimidine skeleton to each terminal end of which is linked an alkyl chain, with the sum of carbon atoms of the alkyl chains being equal to 17.
    • 实现稳定的单稳态模式以实现足够的模拟等级和对比度的单稳态铁电液晶显示器。 以单向取向处理的一对基板被放置成使取向处理的方向基本上彼此平行。 在两个基板之间的间隙中加入铁电液晶材料。 由铁电液晶材料的液晶分子拉出的圆锥体的基板上的投影部分和液晶分子本身的轴向的投影分量基本上与取向的处理方向一致 底物。 以这种状态作为初始状态来实现单稳态。 铁电液晶材料是一种液晶组合物,其包含由苯基嘧啶骨架组成的化合物,其末端连接有烷基链,烷基链的碳原子总数等于17。
    • 8. 发明授权
    • Smectic liquid crystal composition and liquid crystal device
    • 近晶液晶组成和液晶装置
    • US5800736A
    • 1998-09-01
    • US860525
    • 1998-01-05
    • Eiji OkabeMayumi TanabeShinichi SaitoAkira SakaigawaHitoshi TakedaMasami KidoTakashi KanekoMitshuhiro KodenTeiyu Sako
    • Eiji OkabeMayumi TanabeShinichi SaitoAkira SakaigawaHitoshi TakedaMasami KidoTakashi KanekoMitshuhiro KodenTeiyu Sako
    • C09K19/34C09K19/30G02F1/133G02F1/1337
    • C09K19/34
    • A liquid crystal composition is realized, which composition simultaneously exhibits a negatively large .DELTA..di-elect cons. value suitable to .tau.-Vmin, and SA phase within a sufficient temperature range for realizing a good alignment. A smectic liquid crystal composition containing component (AI), component (B) and/or component (C), expressed by the following formulas: ##STR1## wherein R.sup.1 represents an alkyl group of 1 to 9 carbon atoms, R.sup.2 represents an alkyl group of 1 to 9 carbon atoms, R.sup.3 represents an alkyl group of 1 to 18 carbon atoms, R.sup.4 represents an alkyl group of 1 to 18 carbon atoms, X represents H or F, R.sup.5 represents an alkyl group of 6 to 15 carbon atoms and R.sup.6 represents an alkyl group of 6 to 15 carbon atoms. Ferroelectric liquid crystal material having a negative dielectric anisotropy is applicable to display element utilizing AC-stabilizing effect and .tau.-Vmin. Further, as to the composition containing ##STR2## as an additional component, SA phase appears within a broad range; hence the composition can be made up into a ferroelectric liquid crystal composition having a good alignment.
    • PCT No.PCT / JP95 / 02725 Sec。 371日期:1998年1月5日 102(e)1998年1月5日PCT 1995年12月27日PCT PCT。 WO96 / 20985 PCT公开 日期1996年7月11日实现了一种液晶组合物,该组合物同时表现出适合于τ-Vmin的负大DELTA +531值,以及在足以实现良好对准的足够温度范围内的SA相。 含有成分(AI),成分(B)和/或成分(C)的层状液晶组合物,由下式表示:其中,R1表示(A) 1〜9个碳原子的烷基,R2表示1〜9个碳原子的烷基,R3表示1〜18个碳原子的烷基,R4表示1〜18个碳原子的烷基,X表示H或 F,R 5表示碳原子数为6〜15的烷基,R 6表示碳原子数为6〜15的烷基。 具有负介电各向异性的铁电液晶材料适用于利用AC稳定效应和τ-Vmin的显示元件。 此外,对于含有作为附加成分的(AII)的组合物,SA相出现在宽范围内; 因此可以将组合物制成具有良好取向的铁电液晶组合物。