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11.发明授权Liquid crystal light-modulating device imparted with memory effect and display unit utilizing same 无效液晶光调制器，设置有记忆效应和含有该调制器的显示单元。
公开(公告)号：EP0283916B1
公开(公告)日：1993-12-29
申请号：EP88104176.8
申请日：1988-03-16
申请人： HITACHI, LTD.
发明人： Kondo, Katsumi , Yokokura, Hisao , Kitamura, Teruo , Hanawa, Yasuo , Iwasaki, Kishiro , Nakata, Tadao , Isogai, Masato , Mukoh, Akio
IPC分类号： G02F1/137
CPC分类号： G02F1/141
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公开(公告)号：EP0327054A3
公开(公告)日：1990-04-18
申请号：EP89101706.3
申请日：1989-02-01
申请人： HITACHI, LTD.
发明人： Kondo, Katsumi , Kitamura, Teruo , Yokokura, Hisao , Iwasaki, Kishiro , Hanawa, Yasuo , Nakata, Tadao , Mukoh, Akio
CPC分类号： C09K19/2021 , G02F1/141
摘要： There is disclosed a liquid crystal light modulating device in which a ferroelectric liquid crystal composition comprising three or more liquid crystal compounds; at least two of said compounds having mutually reverse directions (senses) of the spontaneous twist of molecular major axis in the same layer of smectic phase is used: and the method of driving the same is also disclosed.
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13.发明公开Liquid crystal light modulating device and method for driving the same 失效Flüssigkristall-Lichtmodulationsvorrichtung und ihr Ansteuerungsverfahren。
公开(公告)号：EP0327054A2
公开(公告)日：1989-08-09
申请号：EP89101706.3
申请日：1989-02-01
申请人： HITACHI, LTD.
发明人： Kondo, Katsumi , Kitamura, Teruo , Yokokura, Hisao , Iwasaki, Kishiro , Hanawa, Yasuo , Nakata, Tadao , Mukoh, Akio
CPC分类号： C09K19/2021 , G02F1/141
摘要： There is disclosed a liquid crystal light modulating device in which a ferroelectric liquid crystal composition comprising three or more liquid crystal compounds; at least two of said compounds having mutually reverse directions (senses) of the spontaneous twist of molecular major axis in the same layer of smectic phase is used: and the method of driving the same is also disclosed.
摘要翻译： 公开了一种液晶光调制装置，其中包含三种或更多种液晶化合物的铁电液晶组合物; 使用至少两种所述化合物在同层相中的分子长轴的自发扭转方向（感觉）相反的方向（感觉），并且还公开了其驱动方法。
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公开(公告)号：EP0160302A3
公开(公告)日：1988-11-30
申请号：EP85105290
申请日：1985-04-30
申请人： HITACHI, LTD.
发明人： Iwasaki, Kishiro , Era, Susumu , Yokokura, Hisao , Nakata, Tadao , Mukoh, Akio
IPC分类号： G02F01/133 , C08L79/08
CPC分类号： C08G73/105 , C08G73/1067 , C08G73/1071 , C09K19/0225 , G02F1/133723 , Y10T428/1023 , Y10T428/31721
摘要： Orientation control films (4) are coated and rubbed on a pair of transparent substrates (2) on the side contiguous to the terroelectric liquid crystal layer (1) for aligning molecules threof. The film (4) is made of a polyimide Polymer prepared by ring closure by heating and dehydrating of a polyamic acid which is synthetized by condensing pyromelli- tie dianhydride with 4,4-diaminoterphenyl. A contrast ratio of the ferroelectric liquid crystal element is improved while keeping a high responsibility charactéristics of the férroelec- tric liquid crystal materials.
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15.发明公开
公开(公告)号：EP0162437A3
公开(公告)日：1987-09-23
申请号：EP85106172
申请日：1985-05-20
申请人： HITACHI, LTD.
发明人： Era, Susumu , Yokokura, Hisao , Iwasaki, Kishiro , Nakata, Tadao , Kitamura, Teruo , Mukoh, Akio
IPC分类号： C09K19/28 , C09K19/44 , C09K19/46 , G02F01/133
摘要： A liquid crystal compound of the formula:
wherein
R 2 is preferably C 7 -14 alkyl; X1 is -COO- or -OCO; Y1 is
Y 2 is
; and Z is -N0 2 or -CN, shows a smectic phase, is large in positive dielectric anisotropy and can give a liquid crystal composition (5) suitable for use in a thermal address display device.-
公开(公告)号：EP0231781A1
公开(公告)日：1987-08-12
申请号：EP87100473.5
申请日：1987-01-15
申请人： HITACHI, LTD.
发明人： Yokokura, Hisao , Nakata, Tadao , Era, Susumu , Hanawa, Yasuo , Iwasaki, Kishiro , Kitamura, Teruo , Mukoh, Akio , Narahara, Toshikazu , Kando, Yasuhiko , Numata, Shunichi , Fujisaki, Kooji
CPC分类号： C08G73/1039 , C08G73/105 , G02F1/133723 , G02F1/1397 , Y10T428/1014 , Y10T428/1023
摘要： A liquid crystal display element comprising a pair of substrates, a pair of electrodes provided on the respective substrates, at least one of which is transparent and a liquid crystal layer disposed between said substrates, the liquid crystal layer comprising a nematic liquid crystal, which exhibits a positive dielectric constant anisotropy and contains an optically active substance, the liquid crystal molecule orientation direction in the liquid crystal layer is twisted in the range of 200° to 250° from the one substrate surface toward the other substrate surface so as to form a helical structure therein. A polyimide orientation film is provided between the electrodes and the liquid crystal layer. The polyimide orientation film is one made of polyimide prepared by reacting a diamine compound having a long-chain hydrocarbon group or a diamine compound having a trifluoromethyl group with a tetracarboxylic dianhydride and causes a pretilt angle of at least 3° relative to the nematic liquid crystal molecules. The liquid crystal display element of the present invention is free from a scattering domain.
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17.发明公开
公开(公告)号：EP0163229A2
公开(公告)日：1985-12-04
申请号：EP85106171.3
申请日：1985-05-20
申请人： HITACHI, LTD. , Chisso Corporation
发明人： Hattori, Shintaroo , Kondo, Katsumi , Kitamura, Teruo , Hanawa, Yasuo , Mukoh, Akio , Nakata, Tadao
IPC分类号： C09K19/02 , C09K19/20 , C09K19/30 , C09K19/32 , C09K19/22 , C09K19/12 , C07C119/00 , C07C69/00
CPC分类号： C09K19/32 , C09K19/0225 , C09K19/126 , C09K19/2021 , C09K19/22 , C09K19/3001
摘要： A ferroelectric liquid crystal composition comprising two or more liquid crystal compounds showing a cystal phase at a lower temperature side of ferroelectric chiral smectic C phase when cooled, for example, compounds of the formulae:
and/or
wherein R and R' are independently a substituent having a branched or straight-chain alkyl group therein;
are independently a divalent six-membered ring group; and Z is a divalent linkage group, shows ferroelectric chiral smectic C phase in a broad temperature range including room temper- , ature.摘要翻译： 一种铁电液晶组合物，其包含两种以上液晶化合物，其在冷却时呈现在铁电手性近晶C相的较低温度侧的晶体相，例如下式的化合物：其中R和 R min独立地为其中具有支链或直链烷基的取代基;
和 独立地为二价六元环基团; Z是二价连接基团，在包括室温的宽温度范围内显示铁电手性近晶C相。 -
18.发明公开
公开(公告)号：EP0162437A2
公开(公告)日：1985-11-27
申请号：EP85106172.1
申请日：1985-05-20
申请人： HITACHI, LTD.
发明人： Era, Susumu , Yokokura, Hisao , Iwasaki, Kishiro , Nakata, Tadao , Kitamura, Teruo , Mukoh, Akio
摘要： A liquid crystal compound of the formula:
wherein
R 2 is preferably C 7 -14 alkyl;
X1 is -COO- or -OCO;
Y1 is
Y 2 is
; and
Z is -N0 2 or -CN, shows a smectic phase, is large in positive dielectric anisotropy and can give a liquid crystal composition (5) suitable for use in a thermal address display device.-
19.发明公开Liquid-crystal compound, liquid crystal composition and liquid crystal display device 失效液晶化合物，液晶组合物和液晶显示装置。
公开(公告)号：EP0149754A2
公开(公告)日：1985-07-31
申请号：EP84114170.8
申请日：1984-11-23
申请人： HITACHI, LTD.
发明人： Yokokura, Hisao , Era, Susumu , Abe, Hidetoshi , Nakata, Tadao , Kitamura, Teruo , Mukoh, Akio
CPC分类号： C09K19/3068 , C07C205/42 , C07C205/43 , C07C205/57 , C09K19/2007
摘要： The present liquid crystal compounds are novel ester-type compounds showing a smectic liquid crystal phase and being capable of increasing a dielectric constant anisotropy, represented by the following general formula:
wherein R is an alkyl group; X 1 and X 2 are the same or different from each other and are group -COO- and -OOC-, and when X 1 is group -COO-,
Y 1 is group
and Y 2 is grou f
and when X I is group -OOC-, Y 1 is group
and Y2 is group
The present liquid composition contains the novel compound, and the present liquid crystal display device uses the liquid crystal composition for utilizing the characteristics of the novel compound. Particularly, the present liquid crystal display device is a thermally addressed display device.
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