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1.发明公开
公开(公告)号：EP0283916A3
公开(公告)日：1989-10-11
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
摘要： There are disclosed a ferroelectric liquid crystal light-modulating device comprising a pair of base plates each provided with an electrode, at least one of which is transparent, and a light-polarizing means, said base plates being arranged with a gap therebetween to form a cell which contains a ferroelectric liquid crystal composition, which device is characterized by being such that said ferroelectric liquid crystal composition exhibits a phase sequence in which a smectic A (SA) phase is in the higher temperature side of an adjacent ferroelectric phase [smectic C* (SC*) phase] and either (a) the elastic constant (B,) in deformation of C-director in the liquid crystal layer conforms to the formula, B, > 1.0 × 10 -10 N or (b) said liquid crystal composition has a spontaneous polarization larger than 3.2 × 10 -4 C/m 2 ; and a display device using said ferroelectric liquid crystal light-modulating device.
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2.发明授权
公开(公告)号：EP0208293B1
公开(公告)日：1990-02-21
申请号：EP86109288.0
申请日：1986-07-08
申请人： HITACHI, LTD.
发明人： Yokokura, Hisao , Kondo, Katsumi , Hanawa, Yasuo , Era, Susumu , Iwasaki, Kishiro , Nakata, Tadao , Isogain, Masato , Kitamura, Teruo , Mukoh, Akio , Kando, Yasuhiko
IPC分类号： G02F1/137
CPC分类号： G02F1/133345 , G02F1/133711 , G02F1/141 , Y10T428/1059
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公开(公告)号：EP0163229A3
公开(公告)日：1988-08-17
申请号：EP85106171
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，其在冷却时显示在铁电手性近晶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。 -
公开(公告)号：EP0231781B1
公开(公告)日：1992-04-01
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
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5.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：EP0149754A3
公开(公告)日：1986-02-26
申请号：EP84114170
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.-
公开(公告)号：EP0160302A2
公开(公告)日：1985-11-06
申请号：EP85105290.2
申请日：1985-04-30
申请人： HITACHI, LTD.
发明人： Iwasaki, Kishiro , Era, Susumu , Yokokura, Hisao , Nakata, Tadao , Mukoh, Akio
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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公开(公告)号：EP0160302B1
公开(公告)日：1993-07-21
申请号：EP85105290.2
申请日：1985-04-30
申请人： HITACHI, LTD.
发明人： Iwasaki, Kishiro , Era, Susumu , Yokokura, Hisao , Nakata, Tadao , Mukoh, Akio
CPC分类号： C08G73/105 , C08G73/1067 , C08G73/1071 , C09K19/0225 , G02F1/133723 , Y10T428/1023 , Y10T428/31721
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8.发明授权
公开(公告)号：EP0162437B1
公开(公告)日：1990-09-26
申请号：EP85106172.1
申请日：1985-05-20
申请人： HITACHI, LTD.
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9.发明公开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：EP0283916A2
公开(公告)日：1988-09-28
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
摘要： There are disclosed a ferroelectric liquid crystal light-modulating device comprising a pair of base plates each provided with an electrode, at least one of which is transparent, and a light-polarizing means, said base plates being arranged with a gap therebetween to form a cell which contains a ferroelectric liquid crystal composition, which device is characterized by being such that said ferroelectric liquid crystal composition exhibits a phase sequence in which a smectic A (SA) phase is in the higher temperature side of an adjacent ferroelectric phase [smectic C* (SC*) phase] and either (a) the elastic constant (B,) in deformation of C-director in the liquid crystal layer conforms to the formula, B, > 1.0 × 10 -10 N or (b) said liquid crystal composition has a spontaneous polarization larger than 3.2 × 10 -4 C/m 2 ; and a display device using said ferroelectric liquid crystal light-modulating device.
摘要翻译： 有圆盘游离缺失的铁电液晶的光调制装置包括一对分别设置有在电极中，至少所有这些是透明的，和一个光偏振装置，所述底板被与有一个间隙，以形成一个之间设置底板的 细胞，其含有铁电液晶组合物，该装置是由所检查所述铁电液晶组合物表现出在哪一个近晶A（SA）相是在相邻铁电相的较高温度侧[近晶C相序*为特征的 所述液晶层中的（C *）相]和或者（a）的弹性常数（B1）中C-导演的变形符合式中，B1> 1.0×10 < - （> <1> <0> N或 b）所述的液晶组合物具有自发极化比3.2×10较大的< - > <4> C /米<2>; 和显示装置使用所述铁电液晶的光调制装置。
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10.发明公开
公开(公告)号：EP0208293A1
公开(公告)日：1987-01-14
申请号：EP86109288.0
申请日：1986-07-08
申请人： HITACHI, LTD.
发明人： Yokokura, Hisao , Kondo, Katsumi , Hanawa, Yasuo , Era, Susumu , Iwasaki, Kishiro , Nakata, Tadao , Isogain, Masato , Kitamura, Teruo , Mukoh, Akio , Kando, Yasuhiko
IPC分类号： G02F1/137
CPC分类号： G02F1/133345 , G02F1/133711 , G02F1/141 , Y10T428/1059
摘要： The element comprises a pair of transparent substrates, a pair of light-transmitting electrodes each provided on the respective substrates, a ferroelectric liquid crystal layer disposed between the pair of substrates and orientation control films for the molecules of the ferroelectric liquid crystal provided between the electrodes and the ferroelectric liquid crystal layer. The orientation control film controls a tilt angle of a biphenyle series nematic liquid crystal having biphenyl ring system below 1.5° and causes a uniform molecule orientation characteristic and a memory property for the ferroelectric liquid crystal element of smectic C * liquid crystal and having a liquid crystal layer thickness of even more than 4 µ m.
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