Abstract: It is an object of the present invention to provide a liquid crystal composition having positive ??, having a liquid crystal phase in a wide temperature range, having high solubility at low temperatures, having high ODF process compatibility, having a high specific resistance and voltage holding ratio, and being insensitive to heat and light. In order to achieve this object, there is provided a liquid crystal composition containing at least one compound represented by the following general formula (i) and at least one compound represented by the following general formula (ii).

Abstract: There is provided a liquid crystal composition containing at least any one of compounds represented by General Formula (i) and at least any one of compounds represented by General Formula (ii).

Abstract: A liquid crystal composition including one or two or more compounds selected from the group consisting of compounds represented by general formula (i), wherein mi1 is 2, one or two or more compounds selected from the group consisting of compounds represented by general formula (ii) shown below, a compound represented by formula (1.3) and/or a compound represented by formula (2.2) shown in below. In formulae, Ri1 and Rii1 independently represent an alkyl group, Ai1 represents 1,4-phenylene group in which Ai1 may be the same or different, Xi1 independently represents a hydrogen atom, a fluorine atom or a chlorine atom, mii1 represents 0 or 1, Xii1, Xii2, Xii3 and Xii4 independently represent a hydrogen atom, a fluorine atom or a chlorine atom, and Xii5 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, —CF3 or —OCF3.

Abstract: A liquid crystal composition including: one or two or more compounds selected from the group consisting of compounds represented by the general formula (i), and one or more compounds selected from the group consisting of compounds represented by the general formula (ii). In the general formulae, R11a and R21a independently represent an alkyl group having 1 to 8 carbon atoms, and one —CH2— group or two or more —CH2— groups which are not adjacent to each other in the alkyl group may be independently substituted by —CH?CH—, —C?C—, —O—, —CO—, —COO— or —OCO, and a hydrogen atom in the alkyl group may be substituted by a fluorine atom or a chlorine atom, m21 represents 0 or 1, X21, X22, X23 and X24 independently represent a hydrogen atom, fluorine atom or chlorine atom, and X25 represents a hydrogen atom, a fluorine atom, a chlorine atom, a cyano group, —CF3 or —OCF3.

Abstract: The present invention provides a liquid crystal composition having negative dielectric anisotropy, large refractive index anisotropy, and low viscosity and containing as a first component, one or two or more compounds represented by general formula (I) and, as a second component, one or two or more compounds represented by general formula (II), wherein dielectric anisotropy (??) at 25° C. is ?2.0 or less. Also, provided is a liquid crystal display device having high contrast, fast response, and excellent display quality without causing image sticking and display defects.

Abstract: There is provided a liquid crystal composition containing any one or two or more of compounds represented by general formula (i) below and any one or two or more of compounds represented by general formula (ii) below.

Abstract: The invention provides a liquid crystal composition having positive ??, a liquid crystal phase over a wide temperature range, low viscosity, good solubility at a low temperature, high resistivity and voltage holding ratio, and stability to heat and light. There is provided a liquid crystal composition containing at least one compound represented by general formula (i) below and at least one compound represented by general formula (ii) below.

Abstract: The present invention relates to a liquid crystal composition used in a liquid crystal display device. A problem to be solved by the invention is to provide a liquid crystal composition and a liquid crystal display device using the liquid crystal composition, the liquid crystal composition being suitable for a liquid crystal display device, causing little dropping marks during manufacture and realizing stable discharge of a liquid crystal material in an ODF process without degrading characteristics as a liquid crystal display device, such as dielectric anisotropy, bulk viscosity, nematic phase upper limit temperature, rotational viscosity ?1, voltage holding ratio, etc. and image sticking characteristic of a display device. The present invention relates to a liquid crystal composition having negative dielectric anisotropy and containing compounds represented by formula (i) and formula (XIII-1-2) or formula (XIII-1-4) and also relates to a liquid crystal display device using the liquid crystal composition.

Abstract: A liquid crystal composition includes one or more of compounds represented by general formula (i) below and one or more of compounds represented by general formula (ii) below. In the formulae, R11a and R21a each independently represent an alkyl group having 1 to 8 carbon atoms where one —CH2— or two or more non-adjacent —CH2— in the alkyl group may each independently be substituted with —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; one or more hydrogen atoms in the alkyl group may be substituted with a fluorine atom or a chlorine atom; X11a, X12a, X13a, X14a, and X21a each independently represent a hydrogen atom or a fluorine atom; A21a, A22a, and A23a each independently represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group whose hydrogen atom may be substituted with a fluorine atom or a chlorine atom.

Abstract: A liquid crystal composition having a negative dielectric anisotropy includes: a component (B) which contains a compound represented by the following formula (1) and which is a dielectrically neutral component; and a dielectrically negative component (A) which contains at least two types of compounds selected from the group consisting of compounds represented by the following formulas (2) to (5). R1 and R4 each represent an alkyl group having 1 to 8 carbon atoms, R2 and R3 each represent an alkyl group having 1 to 8 carbon atoms or an alkenyl group having 2 to 8 carbon atoms.

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 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: 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: This liquid crystal composition includes at least one compound represented by general formula (i), and at least one compound represented by general formula (ii) (in the formulae: Ri1, Ri2, and Rii1 each independently represent a C1-8 alkyl group; one or at least two non-adjacent-CH2— groups in these alkyl groups may each independently be substituted with —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; the hydrogen in these alkyl groups may be substituted with fluorine or chlorine; Xi1, Xi2, Xi3, Xi4, Xi11, and Xii2 each independently represent hydrogen or fluorine; and Aii1, Aii2, and Aii3 each independently represent a trans-1,4-cyclohexylene group, or a 1,4-phenylene group which may have the hydrogen therein substituted with fluorine or chlorine).

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 neutral 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: There is provided a composition containing a compound represented by General Formula (i) and a compound represented by General Formula (ii) (where Ri1, Rii1, and Rii2 each independently represent an alkyl group having 1 to 8 carbon atoms; in the alkyl group, one —CH2— group or two or more —CH2— groups not adjoining each other are each independently optionally substituted with —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—; mi1 represents 2; Ai1 represents a 1,4-cyclohexylene group or a 1,4-phenylene group of which a hydrogen atom is optionally substituted with a fluorine atom or a chlorine atom; multiple Ai1's may be the same as or different from each other; Zi1 represents a single bond, —CH?CH—, —C?C—, —CH2CH2—, —COO—, or —OCO—; multiple Zi1's may be the same as or different from each other; and Xi1 and Xii1 to Xii4 each independently represent a hydrogen atom or a fluorine atom).

Abstract: There is provided a nematic liquid crystal composition which has a positive dielectric anisotropy (??) and is useful as a liquid crystal display material, and to a liquid crystal display device using it. The liquid crystal composition has a dielectric anisotropy with a high absolute value and low viscosity. The liquid crystal display device using the liquid crystal composition has high contrast, high-speed response, and high display quality, and thus image sticking and display defects are not caused. The liquid crystal display device that uses the liquid crystal composition is a useful liquid crystal display device in which high-speed response is achieved and generation of display defects is reduced. The liquid crystal display device is particularly useful as an active matrix driving liquid crystal display device and can be applied to liquid crystal display devices with an IPS mode, a TN mode, or the like.

Abstract: The inventor of the present invention has investigated various liquid crystal compounds and various chemical substances and found that the object can be achieved by using a combination of particular liquid crystal compounds, thereby making the present invention. In other words, provided are a liquid crystal composition having positive dielectric anisotropy, comprising compounds represented by formula (26.2) and formula (2.5) and one or more compounds represented by general formula (IV), an active matrix driving-liquid crystal display device using the liquid crystal composition, and a liquid crystal display using the active matrix-driving liquid crystal display device: (In the formula, R41 and R42 each independently represent an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 4 or 5 carbon atoms and X41 and X42 each independently represent a hydrogen atom or a fluorine atom.

Abstract: There is provided a composition containing at least one compound represented by General Formula (i) and at least one compound represented by General Formula (ii).

Abstract: A composition contains one or more compounds represented by general formula (i) and one or more compounds represented by general formula (ii), where a content of the compounds represented by general formula (i) is 5% to 30% and a content of the compounds represented by general formula (ii) is 5% to 25%: (In the formulae, Ri1, Ri2, and Rii1 each independently represent an alkyl group having 1 to 8 carbon atoms where one —CH2— or two or more non-adjacent —CH2— in the alkyl group may each independently be substituted with —CH?CH—, —C?C—, —O—, —CO—, —COO—, or —OCO—, Xi1 to Xi6 each independently represent a hydrogen atom or a fluorine atom, and Xii1 represents a hydrogen atom, a fluorine atom, or a chlorine atom.