Abstract: An object of the present invention is to provide a liquid crystal composition suitable for producing liquid crystal display elements which reduces the risk of the formation of droplet traces during production and allows a liquid crystal material to be ejected at a constant rate during an ODF process without deteriorating the properties of the liquid crystal display element, such as dielectric anisotropy, viscosity, nematic-phase upper-limit temperature, nematic-phase stability at a low temperature, and ?1, and the image sticking resistance of the display element, and a liquid crystal display element including the liquid crystal composition. Provided are a liquid crystal composition having a negative dielectric anisotropy, the liquid crystal composition including one or more compounds represented by General Formula (I), one or more compounds represented by General Formula (II), and the compound represented by Formula (IIIb-1) and a liquid crystal display element including the liquid crystal composition.

Abstract: To provide a liquid crystal display device that has a high off-response speed and a good balance between drive voltage and transmittance, is stable over time, and also has a high voltage holding ratio. A liquid crystal display device in which a liquid crystal layer containing a polymer network (A) and a liquid crystal composition (B) is disposed between two substrates having an electrode on at least one side thereof and having transparent properties on at least one side thereof, and the loss factor (tan ?) (loss modulus/storage modulus) of the liquid crystal layer calculated from the storage modulus (Pa) and the loss modulus (Pa) in a sinusoidal vibration measured with a rheometer at 25° C. and at a measurement frequency of 1 Hz ranges from 0.1 to 1.

Abstract: To provide a liquid crystal display device that has a high off-response speed and a good balance between drive voltage and transmittance, is stable over time, and also has a high voltage holding ratio. A liquid crystal display device in which a liquid crystal layer containing a polymer network (A) and a liquid crystal composition (B) is disposed between two substrates having an electrode on at least one side thereof and having transparent properties on at least one side thereof, and the loss factor (tan ?) (loss modulus/storage modulus) of the liquid crystal layer calculated from the storage modulus (Pa) and the loss modulus (Pa) in a sinusoidal vibration measured with a rheometer at 25° C. and at a measurement frequency of 1 Hz ranges from 0.1 to 1.

Abstract: An object of the present invention is to provide a liquid-crystal display element using a liquid-crystal composition having negative dielectric anisotropy, capable of realizing excellent display characteristics by being used in a liquid-crystal display element provided with a photo-alignment film, without deteriorating various characteristics as a liquid-crystal display element such as dielectric anisotropy, viscosity, a nematic phase upper limit temperature, nematic phase stability at low temperatures, and ?1, and burn-in characteristics of a display element. A liquid-crystal display element using a liquid-crystal composition containing at least one compound selected from the group consisting of compounds represented by the following General Formula (I) is provided.

Abstract: There is provided a liquid crystal display element. The liquid crystal layer contains a liquid crystal composition between the first substrate and the second substrate. The first common electrode contains a transparent conductive material on the first substrate. The second common electrode contains a transparent conductive material on the second substrate. The pixel electrode contains a transparent conductive material. Distances R between the pixel electrode and the common electrode is smaller than distance G between the first substrate and the second substrate. The common electrode is disposed closer to the first substrate than the pixel electrode over nearly the entire surface of the first substrate. The liquid crystal composition has negative dielectric anisotropy and contains one or two or more compounds selected from the group of compounds represented by General Formula (i), General Formula (ii), and General Formula (iii).

Abstract: An object of the present invention is to provide a composition that has positive ??, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield. Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one selected from compounds represented by general formula (iii). Moreover, a liquid crystal display device using the composition and an IPS or FFS device that uses the composition are provided.

Abstract: An object of the present invention is to provide a composition that has positive ??, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield. Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one compound represented by general formula (iii). Also provided is a liquid crystal display device that uses the composition and an IPS or FFS device that uses the composition.

Abstract: The liquid crystal display element uses a liquid crystal composition which has a negative value of dielectric anisotropy (??) and is designed to improve light transmittance adjusting an elastic constant, and a liquid crystal display including the liquid crystal display element. The liquid crystal display element uses a liquid crystal composition having a dielectric anisotropy (??) of less than ?1.5, in which a value of ? of the liquid crystal composition is 0.3 or less, and the value of ? is obtained from Equation (2) using measured values of a splay elastic constant (K11) and a bend elastic constant (K33) of the liquid crystal composition and a twist elastic constant (K22) value obtained from Equation (1) using measured values of a threshold voltage (Vth), a bend elastic constant (K33), vacuum permittivity (?0), a cell gap (d), and a helical pitch (P0).

Abstract: A liquid crystal display device with few drop marks left during manufacture is provided without degrading the image-sticking characteristics of the liquid crystal display device or other characteristics fundamental to liquid crystal display devices, such as dielectric anisotropy, viscosity, upper nematic phase temperature limit, and rotational viscosity (?1), and a method for manufacturing such a liquid crystal display device is also provided. A liquid crystal display device 10 according to the present invention includes a first substrate 11, a second substrate 12, a liquid crystal composition layer 13 disposed therebetween, and vertical alignment layers 16 and 17 containing a polymer of a monofunctional reactive-group-containing polymerizable compound and a polyfunctional reactive-group-containing polymerizable compound.

Abstract: An object of the present invention is to provide a liquid-crystal display element using a liquid-crystal composition having negative dielectric anisotropy, capable of realising excellent display characteristics by being used in an FFS mode liquid-crystal display element, without deteriorating various characteristics as a liquid-crystal display element such as dielectric anisotropy, viscosity, a nematic phase upper limit temperature, nematic phase stability at low temperatures, and ?1, and burn-in characteristics of a display element.

Abstract: The liquid crystal composition is designed to improve light transmittance using an elastic constant and has a negative value of dielectric anisotropy (??), a liquid crystal display element using the liquid crystal composition, and the liquid crystal display. The liquid crystal composition has a negative value of dielectric anisotropy (??) and a value of ? of 0.28 or less. The value of ? is obtained from Equation (2) using a twist elastic constant (K22) value obtained from Equation (1) using measured values of dielectric anisotropy (??), a threshold voltage (Vth), a bend elastic constant (K33), vacuum permittivity (?0), a cell gap (d), and a helical pitch (P0) and measured values of a splay elastic constant (K11) and the bend elastic constant (K33).

Abstract: The liquid crystal display element uses a liquid crystal composition which has a negative value of dielectric anisotropy (??) and is designed to improve light transmittance adjusting an elastic constant, and a liquid crystal display including the liquid crystal display element. The liquid crystal display element uses a liquid crystal composition having a dielectric anistropy (??) of less than ?1.5, in which a value of ? of the liquid crystal composition is 0.3 or less, and the value of ? is obtained from Equation (2) using measured values of a splay elastic constant (K11) and a bend elastic constant (K33) of the liquid crystal composition and a twist elastic constant (K22) value obtained from Equation (1) using measured values of a threshold voltage (Vth), a bend elastic constant (K33), vacuum permittivity (?0), a cell gap (d), and a helical pitch (P0).

Abstract: The present invention relates to a liquid crystal display that incorporates a particular liquid crystal composition and a sealant in which a cured form of a particular curable resin composition is used. The present invention provides a liquid crystal display that prevents reduced voltage holding ratio (VHR) and increased ionic density (ID) in the liquid crystal layer and solves the problems of display defects such as voids, alignment irregularities, and image-sticking. Liquid crystal displays according to the present invention, featuring the ability to prevent reduced voltage holding ratio (VHR) in the liquid crystal layer and reduce the occurrence of display defects such as alignment irregularities and image-sticking, are useful particularly to liquid crystal displays in the IPS and FFS modes for active matrix drive and applicable to liquid crystal displays of equipment such as liquid crystal TVs, monitors, mobile phones, and smartphones.

Abstract: Provided is a liquid crystal display device including first and second opposing substrates, a liquid crystal layer containing a liquid crystal composition between the first and second substrates, a plurality of gate lines and data lines arranged in a matrix on the first substrate, thin-film transistors disposed at intersections of the gate lines and the data lines, and pixel electrodes that are driven by the transistors and that are made of a transparent conductive material. Each thin-film transistor includes a gate electrode, an oxide semiconductor layer disposed over the gate electrode with an insulating layer therebetween, and source and drain electrodes electrically connected to the oxide semiconductor layer. The liquid crystal composition contains at least one compound selected from the group consisting of compounds represented by general formulas (LC1) and (LC2) and at least one compound selected from the group consisting of compounds represented by general formulas (II-a) to (II-f).

Abstract: The present invention provides a liquid crystal display element that exhibits a large potential-difference gradient due to inter-electrode distance in FFS mode or the like and contains one or more compounds selected from the group of compounds represented by General Formula (I) and one or more compounds selected from the group of compounds represented by General Formula (II).

Abstract: An object of the present invention is to provide a liquid crystal display element using a liquid crystal composition having negative dielectric anisotropy, which is capable of realizing excellent display properties by being used in an FFS mode liquid crystal display element without deteriorating various properties, as a liquid crystal display element, such as dielectric anisotropy, viscosity, a nematic phase upper limit temperature, nematic phase stability at low temperature, and ?1, and burn-in characteristics of the display element. Provided is an FFS mode liquid crystal display element using an n-type liquid crystal composition so as to achieve the above object.

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 display device which prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and which overcomes problems of defective display such as voids, uneven alignment, and screen burn-in. The liquid crystal display device prevents a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and an increase in ion density (ID) therein and reduces defective display such as screen burn-in; hence, such a liquid crystal display device is particularly useful as liquid crystal display devices of a VA mode and PSVA mode which involve active matrix driving and can be applied to the liquid crystal display devices of liquid crystal TV sets, monitors, mobile phones, and smartphones.

Abstract: There is provided a liquid crystal display device that uses such a liquid crystal composition is also provided. Provided is a liquid crystal composition that includes a first component which is at least one selected from the group consisting of compounds represented by general formula (1) and a second component which is at least one component selected from the group consisting of compounds represented by general formula (2). Also provided is a liquid crystal display device that uses a liquid crystal composition that contains the first component and the second component.

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.