Abstract: There is provided a liquid crystal composition containing a compound represented by Formula (i) and a compound represented by General Formula (ii) (where Rii1 and Rii2 each independently represent an alkyl group having 1 to 5 carbon atoms, an alkoxyl group having 1 to 5 carbon atoms, or an alkenyl group having 4 or 5 carbon atoms; and Xii1 and Xii2 each independently represent a hydrogen atom or a fluorine atom). There is also provided a liquid crystal display device in which such a liquid crystal composition is used.

Abstract: The liquid crystal composition of the present invention is used for liquid crystal display devices of an IPS mode, a TN mode, and the like that have a high response speed and do not easily cause display defectiveness such as ghosting or dropping marks. The liquid crystal composition contains a component which is a dielectrically positive component containing a dielectrically positive compound and a dielectrically neural component which exhibits dielectric anisotropy greater than ?2 and smaller than +2. The liquid crystal composition has excellent properties in which the composition forms a liquid crystal phase in a wide temperature range, has a low viscosity, dissolves excellently at a low temperature, has a high degree of specific resistance and voltage holding ratio, and is stable with respect to heat or light.

Abstract: A liquid crystal composition having a negative dielectric anisotropy includes a dielectrically negative component (A) containing a compound represented by a general formula (1) below, and a component (B) that is a dielectrically neutral component containing at least one of compounds represented by a formula (2.1) and a formula (2.2) below. In the following formula, R1 and R2 each independently represent an alkyl group having 1 to 5 carbon atoms.

Abstract: There is provided a liquid crystal composition comprising: at least one kind of a compound represented by the following formula (i); and at least one kind of a compound represented by the following formula (ii). In the formulae, each of Ri1, Ri2 and Rii1 independently represents an alkyl group having a carbon number of 1-8; one of the alkyl groups, or two or more of the alkyl groups being noncontiguous, include —CH2— which can be independently substituted by —CH?CH—, —C?C—, —O—, —CO—, —COO— or —OCO—; hydrogen atom in the alkyl group can be substituted by fluorine atom or chlorine atom; and each of Xi1, Xi2, Xi3 and Xi4 independently represents hydrogen atom or fluorine atom.

Abstract: The nematic liquid crystal composition exhibits a positive dielectric anisotropy (??), the liquid crystal composition being useful as a liquid crystal display material, and a liquid crystal display element using the same. The liquid crystal composition of the present invention has a large absolute value of dielectric anisotropy thereof and a low viscosity. By using this liquid crystal composition, it is possible to provide a liquid crystal display element which has a high contrast, high-speed responsiveness, and good display quality in which image sticking and display defects are not generated. The liquid crystal display element using the liquid crystal composition is a useful display element which realizes both high-speed response and suppression of display defects. In particular, the liquid crystal display element is useful as a liquid crystal display element for active-matrix driving, and can be applied to, for example, an IPS-type or TN-type liquid crystal display element.

Abstract: A composition contains three or more compounds represented by general formula (i) below. (In the formula, Ri1 represents an alkyl group having 1 to 8 carbon atoms, and one or nonadjacent two or more —CH2— in the alkyl group may be each independently substituted by —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; mi1 represents 1 or 2; Ai1 represents a 1,4-cyclohexylene group or a 1,4-phenylene group which may have a fluorine atom or a chlorine atom substituted for a hydrogen atom, when mi1 represents 1, Ai1 represents a 1,4-phenylene group which may have a fluorine atom or a chlorine atom substituted for a hydrogen atom, and when mi1 represents 2 and a plurality of Ai1 are present, Ai1 may be the same or different, and Xi1 represents a hydrogen atom, a fluorine atom, or a chlorine atom.

Abstract: The liquid crystal composition of the present invention can be used in a liquid crystal display element of an IPS type or a TN type in which display defects such as burn-in and dropping marks in high speed response are unlikely to be generated. Since the liquid crystal composition contains a component which is a dielectrically positive component including a dielectrically positive compound and a dielectrically neutral component of which dielectric anisotropy is greater than ?2 and less than +2, the liquid crystal composition has excellent characteristics that the liquid crystal composition has a liquid crystal phase in a wide temperature range, low viscosity, excellent solubility at a low temperature, high specific resistance and a high voltage holding ratio, and is stable with respect to heat and light.

Abstract: A liquid crystal composition having a negative dielectric anisotropy, a component (B) including at least one compound represented by formula (1.1) or formula (1.2), wherein the compound (B) is dielectrically neutral, having a dielectric anisotropy of more than ?2 and less than +2; and a component (A) including at least one compound represented by formula (2.1) or formula (2.2), wherein the component (A) is dielectrically negative, having a dielectric anisotropy of ?2 or less.

Abstract: A composition containing a compound represented by general formula (i) and a compound represented by general formula (ii): in the formulas, each of Xi1 to Xi6 independently represents a hydrogen atom, a fluorine atom or a chlorine atom, and each of Xii1 to Xii4 independently represents a hydrogen atom, a fluorine atom or a chlorine atom.

Abstract: The liquid crystal composition of the present invention is used for liquid crystal display devices of an IPS mode, a TN mode, and the like that have a high response speed and do not easily cause display defectiveness such as ghosting or dropping marks. The liquid crystal composition contains a component which is a dielectrically positive component containing a dielectrically positive compound and a dielectrically neural component which exhibits dielectric anisotropy greater than ?2 and smaller than +2. The liquid crystal composition has excellent properties in which the composition forms a liquid crystal phase in a wide temperature range, has a low viscosity, dissolves excellently at a low temperature, has a high degree of specific resistance and voltage holding ratio, and is stable with respect to heat or light.

Abstract: A liquid crystal display element (10) in accordance with the present invention includes (i) a pair of substrates (1), at least one of which is a flexible substrate, (ii) a liquid crystal (3) with which a gap between the pair of substrates (1) is filled, (iii) a spacer member (4) having a height so as to sustain a thickness of the liquid crystal (3), (iv) a sealant (2) for allowing the gap to be filled with the liquid crystal (3), and (v) a barrier (5) for causing a liquid crystal filling region to be divided into (a) a first region including a display region and (b) a second region located outside the first region. The barrier (5) is attached to one substrate (1b) of the pair of the substrates (1), and is in close contact with, but not attached to, the other substrate (1a).

Abstract: The present invention provides a photoalignment film composition containing a compound represented by general formula (1) and a compound having a hydrophilic group and a (meth)acryloyloxy group, an optically anisotropic medium using a photoalignment film comprised of the photoalignment film composition, and a method for preparing thereof: (wherein, R1 and R2 respectively and independently represent a hydrogen atom, halogen atom, carboxyl group or alkali metal salt thereof, halogenated methyl group, halogenated methoxy group, cyano group, nitro group, —OR5, hydroxylalkyl group having 1 to 4 carbon atoms, —CONR6R7 or methoxycarbonyl group, and R3 and R4 respectively and independently represent a carboxyl group or alkali metal salt thereof, sulfo group or alkali metal salt thereof, nitro group, amino group, carbamoyl group, alkoxycarbonyl group, sulfamoyl group or hydroxyl group).

Abstract: The present invention provides a photoalignment film composition containing a compound represented by general formula (1) and a compound having a hydrophilic group and a (meth)acryloyloxy group, an optically anisotropic medium using a photoalignment film comprised of the photoalignment film composition, and a method for preparing thereof: (wherein, R1 and R2 respectively and independently represent a hydrogen atom, halogen atom, carboxyl group or alkali metal salt thereof, halogenated methyl group, halogenated methoxy group, cyano group, nitro group, —OR5, hydroxylalkyl group having 1 to 4 carbon atoms, —CONR6R7 or methoxycarbonyl group, and R3 and R4 respectively and independently represent a carboxyl group or alkali metal salt thereof, sulfo group or alkali metal salt thereof, nitro group, amino group, carbamoyl group, alkoxycarbonyl group, sulfamoyl group or hydroxyl group).

Abstract: The invention relates to bismaleimides comprising mesogenic groups which consist, corresponding to (I), of two reactive terminal maleimide groups which are linked via linear or singly alkyl-substituted alkylene chains A, which are linked to an aromatic mesogen M via ester, amide or ether groups, wherein A, X, M and R are as defined in the specification. The invention, moreover, relates to oligomeric liquid crystalline bismaleimides of general formula (II) wherein A, X, M and R are as defined above, n represents and integer from 1 to 100 and B represents piperazinyl or a divalent radical which is derived from a primary or secondary para-substituted cyclic diamine, wherein B is bonded via the amino groups of the diamine. The invention also relates to methods of producing said bismaleimides.