Abstract: To form an optical alignment film having large anchoring strength and suppress an AC afterimage of a liquid crystal display device, in a liquid crystal display device of an IPS mode. In an alignment film material subjected to optical alignment processing, polyimide which becomes a rigid high molecule and polyimide which becomes a flexible high molecule are mixed and used. The material of the present invention can easily rotate oligomer after irradiating polarized ultraviolet rays and improve a UV-absorbed two-color ratio of an alignment film. Accordingly, an anchoring strength for liquid crystals by the alignment film is large to suppress an AC afterimage.

Abstract: There is provided a liquid crystal display device that may limit a reduction in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in the ion density (ID) in the liquid crystal layer and thereby address issues of faulty display such as white missing pixels, alignment inconsistencies, and burn-in. The liquid crystal display device according to the present invention, which may limit a reduction in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in the ion density (ID) in the liquid crystal layer and thereby reduce the risk of faulty display such as burn-in, can be suitably used, in particular, as an IPS-mode or FFS-mode liquid crystal display device for active-matrix driving and may also be used as a liquid crystal display device for liquid crystal display televisions, monitors, mobile phones, smart phones, or the like.

Abstract: In a liquid crystal display device 1 including a liquid crystal cell 2 having a liquid crystal layer, a first polarization plate 3 and a second polarization plate 4, and an optical compensation plate 5, when a differential coefficient of the amount of transmitted light I1 with respect to a time t when the driving voltage is turned off from on in a case in which the optical compensation plate 5 is not disposed is represented by ?I1/?t, and a differential coefficient of the amount of transmitted light I2 with respect to the time t when the driving voltage is turned off from on in a case in which the optical compensation plate 5 is disposed is represented by ?I2/?t, a phase difference in the liquid crystal layer and a phase difference in the optical compensation plate 5 are optically designed to satisfy a relationship of |?I2/?t|>|?I1/?t|.

Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerizable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the PSA (“polymer sustained alignment”) type.

Abstract: A liquid crystal composition includes at least one liquid crystal molecule represented by Chemical Formulas 1-1 to 1-6, and at least one liquid crystal molecule represented by Chemical Formulas 2-1 to 2-6.

Abstract: A display device according to the exemplary embodiment of the present invention includes: a first insulation substrate; a pixel electrode disposed on the first insulation substrate; a first alignment layer disposed on the pixel electrode; a second insulation substrate facing the first insulation substrate; a common electrode disposed on the second insulation substrate; and a liquid crystal layer disposed between the first and second insulation substrates. The liquid crystal layer includes liquid crystal molecules and nanoparticles, and the nanoparticles are disposed adjacent to the common electrode.

Abstract: The present invention relates to polymerizable mixtures and to the use thereof for optical, electro-optical and electronic purposes, in particular in liquid-crystal (LC) media and LC displays, especially in LC displays of the PS (“polymer sustained”) or PSA (“polymer sustained alignment”) type.

Abstract: The present invention relates to nematic liquid-crystal media of negative dielectric anisotropy which have a peak time (tmax.) of 0.25 ms or less, which is determined as described in the disclosure, and which preferably have a value of the quotient of the peak time and the square of the birefringence (tmax/?n2) of 22 ms or less, and to the use of these liquid-crystal media in liquid-crystal displays, and to these liquid-crystal displays.

Abstract: The subject is to provide a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat or light, a high clearing point (or a high maximum temperature), a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a large dielectic anisotropy, a suitable elastic constant and an excellent compatibility with any other liquid crystal compound, a liquid crystal composition including this compound and a liquid crystal display device including this composition. The compound is represented by the following formula (1a): wherein R1 is alkyl having 1 to 15 carbons or the like; ring A1, ring A2, ring A3 and ring A4 are independently 1,4-phenylene, naphthalene-2,6-diyl or the like; Z1 and Z2 are independently a single bond or the like; o and p are independently 0, 1 or 2; and n is an integer from 2 to 10.

Abstract: A polymerizable liquid crystal composition contains a polymerizable liquid crystal compound having good solubility, and is well-aligned without dissolving a substrate or a base material when coated onto the substrate. Moreover, the polymerizable liquid crystal composition causes no coating film unevenness during coating so that a smooth optically anisotropic body can be obtained. The polymerizable liquid crystal composition contains at least one kind of polymerizable liquid crystal compound having one or more polymerizable functional groups in one molecule, and a solvent, wherein the solvent includes a diacetate solvent and a ketone solvent.

Abstract: A cholesteric liquid crystal mixture containing a compound represented by Z1—Y1-A1-Y3-M1-Y4-A2-Y2—Z2, a compound represented by Z3—Y5-A3-Y7-M2-P, and a tri- or higher functional polymerizable monomer suppresses deposition of a liquid crystal at the time of forming a film, exhibits a wide characteristic reflection bandwidth of the film. Z1 to Z3 represent a polymerizable group; A1 to A3 represent an alkylene spacer having a chain of 1 to 30 atoms; M1 and M2 represent (-T1-Y8)n-T2-; n indicates a natural number; T1 and T2 represent a hydrocarbon or heterocyclic ring; Y1 to Y5, Y7 and Y8 represent a single bond, —O—, —CO—, —O—CO—, —CO—O— or —O—CO—O—; and P represents a hydrogen atom or an alkyl group.

Abstract: A method of manufacturing a liquid crystal display device with which response characteristics are able to be easily improved without using major equipment is provided. The method of manufacturing a liquid crystal display device includes steps of forming a first alignment film including a polymer compound having a crosslinkable functional group as a side chain on one substrate of a pair of substrates; forming a second alignment film on the other substrate of the pair of substrates; arranging the pair of substrates so that the first alignment film and the second alignment film are opposed to each other, and sealing a liquid crystal layer containing a liquid crystal molecule having negative dielectric constant anisotropy between the first alignment film and the second alignment film; and bridging the polymer compound to give pre-tilt to the liquid crystal molecule 41 after sealing the liquid crystal layer.

Abstract: To provide a liquid crystal compound satisfying at least one physical property such as high stability to light, a high clearing point, low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large dielectric anisotropy, large dielectric constant in a minor-axis direction, suitable elastic constant, excellent compatibility, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. The compound is represented by formula (1): wherein, for example, R1 is alkyl having 1 to 15 carbons, rings A1 to A4 are 1,4-cyclohexylene or 1,4-phenylene, at least one of Z1 to Z5 is —CF2O—, and X1 is fluorine or —OCF3; W1 is a group represented by formula (1a) or (1b); wherein, Y1 to Y5 are fluorine; W2 is a group represented by formula (1c) or (1d); wherein, L1 to L5 are fluorine; and a, b, c and d are independently 0 or 1.

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: A liquid crystal composition comprising a compound represented by the following formula has sufficient solubility and a wide usable concentration range, and exhibits excellent haze-lowering performance. B1 represents an n-valent chain linking group, L1 and L2 represent a single bond, —O—, —S—, —CO—, —COO—, —OCO—, etc, A1 represents a divalent aromatic hydrocarbon group or a divalent heterocyclic group, A2 represents an aromatic hydrocarbon group, Sp1 represents a single bond, or an alkylene group, Hb1 represents a fluorine-substituted alkyl group, n represents 2 to 6, m represents 0 to 2, and l represents 2 or 3.

Abstract: A cycloheptane derivative as represented by formula (I), and preparation method and use thereof; the compound has photostability and thermostability, wide nematic phase and liquid crystalline state temperature range, and good low-temperature intersolubility, and particularly has low rotary viscosity ?1 and good dielectric anisotropy (??>0).

Abstract: A polymerizable liquid-crystal compound of formula (I) effective for preventing crystal deposition after coating with polymerizable liquid crystal (II) or a polymerizable liquid crystal similar thereto. P represents a polymerizable functional group; Sp represents a spacer or a single bond; Z1 and Z2 each represent —CO—O—; R0 represents a linear alkyl group having 1-15 carbon atoms; R2, R3 and R4 each independently represent an alkyl group having 1-4 carbon atoms, an alkoxy group having 1-4 carbon atoms, an alkoxycarbonyl group having 2-5 carbon atoms, an acyloxy group having 2-5 carbon atoms, an acyl group having 2-4 carbon atoms, an amide group having 2-5 carbon atoms, a cyano group, an amino group, a hydroxyl group, or a halogen atom; r1, r2 and r3 indicate an integer from 0-4; when r1, r2 and r3 each are 2 or more, then R2, R3 and R4 each may be the same or different; however, when R0 is a methyl group, then r2 is not 1.

Abstract: It is an object of the present invention to provide a liquid crystal composition having a positive ??, the liquid crystal composition also having a liquid crystal phase in a wide temperature range, a good resistance to resolution at low temperature, an excellent adaptability to an ODF process, a high specific resistance and voltage holding ratio, and stability to heat and light. In order to achieve this object, a liquid crystal composition containing compounds represented by Formulae (i) and (ii) is provided. (where Ri1 represents an alkyl group having 1 to 5 carbon atoms or an alkenyl group having 2 to 5 carbon atoms).

Abstract: The present invention relates to a liquid crystal display device that uses a particular liquid crystal composition and a color filter that uses a particular pigment. The present invention provides a liquid crystal display device that prevents a decrease in voltage holding ratio (VHR) and an increase in ion density (ID) of a liquid crystal layer and resolves the problems of display defects, such as missing dots, alignment variation, and ghosting. Since the liquid crystal display device of the present invention prevents a decrease in voltage holding ratio (VHR) and an increase in ion density (ID) of a liquid crystal layer and resolves the problems of display defects, such as ghosting, it is particularly useful for active matrix drive VA-mode and PSVA-mode liquid crystal display devices and can be applied to liquid crystal display devices such as liquid crystal televisions, monitors, cellular phones, and smart phones.

Abstract: A cholesteric liquid-crystal mixture containing a compound represented by the general formula (Ia), a compound represented by the general formula (Ib), a fluorine-containing horizontal alignment agent and a polymerization initiator is capable of forming a film which is prevented from precipitation of liquid-crystal compounds therein, of which the haze is reduced and which has a broad reflection width.