Disclosed are a liquid crystal composition and a display element or display using the liquid crystal composition, wherein the liquid crystal composition contains one or more compounds of general formulas I, II and III, ##STR00001##
The liquid crystal composition disclosed in the present invention has an excellent performance, an optical anisotropy in the range of 0.080 to 0.150, a low rotary viscosity, a fast response time, and good chemical, optical and thermal stabilities, and is very suitable for manufacturing liquid crystal display elements, particularly suitable for active matrix display elements, such as active matrix displays using a VA, FFS or IPS mode.

Disclosed are a liquid crystal composition and a display element or display using the liquid crystal composition, wherein the liquid crystal composition contains one or more compounds of general formulas I, II and III, ##STR00001##
The liquid crystal composition disclosed in the present invention has an excellent performance, an optical anisotropy in the range of 0.080 to 0.150, a low rotary viscosity, a fast response time, and good chemical, optical and thermal stabilities, and is very suitable for manufacturing liquid crystal display elements, particularly suitable for active matrix display elements, such as active matrix displays using a VA, FFS or IPS mode.

The present invention discloses a compound of which a structural formula thereof is represented as the following formula

The compound disclosed by the present invention can be used as a liquid crystal compound and overcomes the problem that solubility of the traditional dibenzothiophene-class liquid crystals is poor, and thus can be better applied to the liquid crystal material field. The present invention further discloses a liquid crystal medium containing the compound and an application thereof.

##STR00001##

Liquid-crystalline media comprising one or more compounds of formula D

##STR00001##

and one or more compounds selected from the group of compounds of formulae I, II and III,

##STR00002##

in which the occurring groups and parameters have the meanings defined in claim 1, and to high-frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas (e.g. phased array antennas).

Liquid-crystalline media comprising one or more compounds of formula D

##STR00001##

and one or more compounds selected from the group of compounds of formulae I, II and III,

##STR00002##

in which the occurring groups and parameters have the meanings defined in claim 1, and to high-frequency components comprising these media, especially microwave components for high-frequency devices, such as devices for shifting the phase of microwaves, tunable filters, tunable metamaterial structures, and electronic beam steering antennas (e.g. phased array antennas).

The liquid crystal composition contains one or two or more compounds represented by general formula (I): and one or two or more compounds represented by general formula (J). The liquid crystal composition is highly practical as a liquid crystal composition for liquid crystal displays and is effective in achieving high contrast, faster response, and high quality reliability ##STR00001##

The liquid crystal composition contains one or two or more compounds represented by general formula (I): and one or two or more compounds represented by general formula (J). The liquid crystal composition is highly practical as a liquid crystal composition for liquid crystal displays and is effective in achieving high contrast, faster response, and high quality reliability ##STR00001##

The present invention relates to a positive dielectric anisotropic liquid crystal composition comprising one or more compounds of formula I and one or more compounds of formula II, and a liquid crystal display device. The liquid crystal composition disclosed by the present invention has the characteristics of positive dielectric properties, a high charge retention ratio, a low rotary viscosity, a fast response time, and especially a high transmittance, and is suitable for manufacturing a TFT-LCD with a high transmittance and a fast response.

##STR00001##

The present invention relates to a positive dielectric anisotropic liquid crystal composition comprising one or more compounds of formula I and one or more compounds of formula II, and a liquid crystal display device. The liquid crystal composition disclosed by the present invention has the characteristics of positive dielectric properties, a high charge retention ratio, a low rotary viscosity, a fast response time, and especially a high transmittance, and is suitable for manufacturing a TFT-LCD with a high transmittance and a fast response.

##STR00001##

An object of the present invention is a liquid crystal composition which has excellent alignment properties, improves a surface state of an optically anisotropic layer to be formed, and improves adhesiveness with a polarizer, an optical film using the same, a polarizing plate, and an image display device. The liquid crystal composition according to the present invention is a liquid crystal composition containing a copolymer having a repeating unit represented by Formula (I) and a repeating unit represented by Formula (II), and a liquid crystal compound.

##STR00001##