An optical film, a polarizing plate, and an image display device, each having an optically anisotropic layer obtained by curing a polymerizable liquid crystal composition including a polymerizable liquid crystal compound (LCC) having forward wavelength dispersion and a monofunctional compound, and immobilizing an alignment state of the polymerizable LCC. The number a.sub.1 of atoms of the polymerizable LCC and the number a.sub.2 of atoms of the monofunctional compound satisfy a relationship of Expression (1): 0.2<a.sub.2/a.sub.1<0.55; the number b.sub.1 of the rings B.sup.1 contained in the polymerizable LCC and the total number b.sub.2 of the aromatic rings Ar and the rings B.sup.2 contained in the monofunctional compound satisfy a relationship of Expression (2): b.sub.2=b.sub.1×0.5 or b.sub.2=(b.sub.1+1)×0.5.

The present invention provides a liquid crystal composition for forming a polymer layer capable of keeping high voltage holding ratio. The liquid crystal composition in an aspect of the present invention contains a liquid crystal material and one or more kind monomers and, at least one of the monomers is a compound produced by further bonding a hydrocarbon group with 12 carbon atoms or more to a compound produced by bonding two polymerizable groups to a cyclic aliphatic compound or aromatic compound with 6 carbon atoms or more.

The present invention provides a liquid crystal composition for forming a polymer layer capable of keeping high voltage holding ratio. The liquid crystal composition in an aspect of the present invention contains a liquid crystal material and one or more kind monomers and, at least one of the monomers is a compound produced by further bonding a hydrocarbon group with 12 carbon atoms or more to a compound produced by bonding two polymerizable groups to a cyclic aliphatic compound or aromatic compound with 6 carbon atoms or more.

There is provided a liquid crystal display device which enables reductions in image sticking and droplet stains caused in production thereof without degradation of properties such as dielectric anisotropy, viscosity, the upper limit of the temperature of nematic phase, and rotational viscosity (γ.sub.1); and there is also provided a method for manufacturing such a liquid crystal display device. The liquid crystal display device is characterized in that a liquid crystal layer containing a liquid crystal composition is disposed between a substrate provided with a common electrode and a color filter layer and another substrate provided with a plurality of pixels each having a pixel electrode, each of the substrates is not provided with an alignment film but provided with an orientation controlling layer composed of at least two polymerizable compounds, each of the pixels has two or more regions having different directions of pretilt, and the liquid crystal composition contains a compound represented by General Formula (I) and a compound represented by General Formula (II).

The present invention relates to a liquid crystal display device including a pair of a substrate arranged opposite to each other, an electrode group disposed on one side or both sides of the pair of substrates facing each other, a plurality of active devices connected to the electrode group, a liquid crystal alignment film disposed on each facing side of the pair of substrates, and a liquid crystal layer interposed between the pair of substrates, wherein the liquid crystal alignment film is manufactured by irradiating linearly polarized light to a film obtained from polyamic acid or a derivative thereof having a photoisomerization structure in the main chain or a film being subject to heat-baking so as to provide alignment-controlling capability, and the liquid crystal layer is a liquid crystal composition having negative (−) dielectric anisotropy. By the present invention, a liquid crystal display device having improved image sticking characteristics and good alignment stability is provided.

The present invention provides a polymerizable compound with a structure of general formula I, which exhibits none or few of the problems existing in the prior art. A polymerizable liquid crystal composition comprising the polymerizable compound has good stability and higher reliability, and is embodied by having a smaller pretilt angle change and higher voltage holding ratio. Also, there is little or no image sticking effect in a liquid crystal display device comprising the polymerizable liquid crystal composition. The present invention also provides a method of synthesizing a polymerizable compound with a structure of general formula I. The present invention further provides a polymerizable liquid crystal composition comprising the polymerizable compound and a liquid crystal display device comprising the polymerizable liquid crystal composition. ##STR00001##

The present invention provides a polymerizable compound with a structure of general formula I, which exhibits none or few of the problems existing in the prior art. A polymerizable liquid crystal composition comprising the polymerizable compound has good stability and higher reliability, and is embodied by having a smaller pretilt angle change and higher voltage holding ratio. Also, there is little or no image sticking effect in a liquid crystal display device comprising the polymerizable liquid crystal composition. The present invention also provides a method of synthesizing a polymerizable compound with a structure of general formula I. The present invention further provides a polymerizable liquid crystal composition comprising the polymerizable compound and a liquid crystal display device comprising the polymerizable liquid crystal composition. ##STR00001##

A liquid crystal display device that prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and that resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display has features of preventing a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking. Therefore, the liquid crystal display device is particularly useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices of, for example, liquid crystal televisions, monitors, cellular phones, and smart phones.

A liquid crystal display device that prevents a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and that resolves the problems of display defects, such as white streaks, variations in alignment, and image sticking. The liquid crystal display has features of preventing a decrease in the voltage holding ratio (VHR) and an increase in the ion density (ID) in a liquid crystal layer and suppressing display defects such as image sticking. Therefore, the liquid crystal display device is particularly useful for active matrix driving liquid crystal display devices with an IPS mode or an FFS mode and can be applied to liquid crystal display devices of, for example, liquid crystal televisions, monitors, cellular phones, and smart phones.

The present invention relates to a liquid crystal display device that includes a particular color filter containing a material containing chiral liquid crystals and a particular pigment. The present invention provides a liquid crystal display device that can prevent a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and solve the problem of display defects, such as white spots, variations in alignment, and burn-in. Because liquid crystal display devices according to the present invention characteristically prevent a decrease in the voltage holding ratio (VHR) of a liquid crystal layer and reduces the occurrence of display defects, such as burn-in, the liquid crystal display devices are particularly useful as liquid crystal display devices in IPS mode and FFS mode for active-matrix driving and can be applied to household electrical appliances, automobiles, production facilities, measuring and analytical instruments, and communication devices.