A liquid crystal composition having good photostability and thermostability. The liquid crystal composition comprises: 5-30% of one or more compounds of general formula I based on the total weight of the liquid crystal composition; 1-30% of one or more compounds of general formula II based on the total weight of the liquid crystal composition; 1-30% of one or more compounds of general formula III based on the total weight of the liquid crystal composition; 1-20% of one or more compounds of general formula IV-1 and/or general formula IV-2 based on the total weight of the liquid crystal composition; and 15-50% of one or more compounds of general formula V based on the total weight of the liquid crystal composition. A liquid crystal display element containing the liquid crystal composition is also provided.

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Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having negative dielectric anisotropy as a fourth component, or a specific compound having a polymerizable group as an additive component.

Provided are a liquid crystal composition satisfying at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy and large negative dielectric anisotropy, or having a suitable balance regarding at least two of the characteristics; and an AM device including the composition. The liquid crystal composition contains a specific compound having large negative dielectric anisotropy as a first component, and a specific compound having small viscosity as a second component, and may contain a specific compound having high maximum temperature or small viscosity as a third component, a specific compound having negative dielectric anisotropy as a fourth component, or a specific compound having a polymerizable group as an additive component.

The invention provides a quick response LCD device and manufacturing method thereof. The LCD device uses field sequential backlight module to realize color display and eliminates color films in conventional LCD panel to achieve high transmittance and color purity; a polymer liquid crystal layer (28) is disposed in LCD panel (2), the polymer liquid crystal layer (28) comprises a polymer network (281) formed by polymerizable monomers and liquid crystal (282) anchored by the polymer network (281) to stay in bend state without electricity and in homeotropic state when electricity applied. The warm-up process of the conventional OCB mode is omitted to achieve quick response.

The invention provides a quick response LCD device and manufacturing method thereof. The LCD device uses field sequential backlight module to realize color display and eliminates color films in conventional LCD panel to achieve high transmittance and color purity; a polymer liquid crystal layer (28) is disposed in LCD panel (2), the polymer liquid crystal layer (28) comprises a polymer network (281) formed by polymerizable monomers and liquid crystal (282) anchored by the polymer network (281) to stay in bend state without electricity and in homeotropic state when electricity applied. The warm-up process of the conventional OCB mode is omitted to achieve quick response.

A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.

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A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.

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The invention provides a quick response LCD device and manufacturing method thereof. The LCD device uses field sequential backlight module to realize color display and eliminates color films in conventional LCD panel to achieve high transmittance and color purity; a polymer liquid crystal layer (28) is disposed in LCD panel (2), the polymer liquid crystal layer (28) comprises a polymer network (281) formed by polymerizable monomers and liquid crystal (282) anchored by the polymer network (281) to stay in bend state without electricity and in homeotropic state when electricity applied. The warm-up process of the conventional OCB mode is omitted to achieve quick response.

The invention provides a quick response LCD device and manufacturing method thereof. The LCD device uses field sequential backlight module to realize color display and eliminates color films in conventional LCD panel to achieve high transmittance and color purity; a polymer liquid crystal layer (28) is disposed in LCD panel (2), the polymer liquid crystal layer (28) comprises a polymer network (281) formed by polymerizable monomers and liquid crystal (282) anchored by the polymer network (281) to stay in bend state without electricity and in homeotropic state when electricity applied. The warm-up process of the conventional OCB mode is omitted to achieve quick response.

The instant invention relates to mesogenic media comprising one or more compounds of formula G ##STR00001##
wherein the parameters are as specified in the text, preferably to mesogenic media showing a blue phase, preferably stabilised by a polymer, and their use in electro-optical light modulation elements and their respective use in displays, as well as to such devices.