The present invention relates to liquid-crystal (LC) media as defined in claim 1, having negative dielectric anisotropy and to the use thereof for optical, electro-optical and electronic purposes, in particular in LC displays.

The present disclosure provides a liquid crystal material, a method of manufacturing a liquid crystal display panel, and a display panel. The display panel includes a thin film transistor substrate, a color film substrate, a polymer layer structure, and a liquid crystal layer. During the preparation, after three different irradiations, the liquid crystal material is directly polymerized into the first polymer layer structure and the second polymer layer structure under the irradiations, eliminating the black matrix structure and the polyimide alignment film structure, improving the display effect of the panel, and reducing preparation costs.

To suppress a phenomenon where an optical axis of the optically anisotropic layer is tilted when the optically anisotropic layer is produced by using a liquid crystalline compound showing smectic phase as a materials showing a higher level of orderliness. An optically anisotropic layer wherein a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase, and a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of the optically anisotropic layer, a method for manufacturing the same, a laminate and a method for manufacturing the same, a polarizing plate, a liquid crystal display device, and an organic EL display device.

The invention relates to a liquid-crystalline medium, in particular based on a mixture of polar compounds, and to the use thereof for an active-matrix display, in particular based on the VA, SA-VA, IPS, PS-IPS, FFS, PS-FFS, UB-FFS or PS-UB-FFS effect.

A liquid crystal medium containing a) one or more compounds of formula I

##STR00001## b) one or more compounds of the formula IIBa

##STR00002## and c) one or more compounds of the formula IIDa

##STR00003## and the use thereof for optical, electro-optical and/or electronic purposes, in particular in LC displays, especially in IPS, FFS, VA or PS-VA displays.

The present invention belongs to the technical field of liquid crystal materials, and in particular relates to a liquid crystal composition with good frequency dependence and a liquid crystal display element or liquid crystal display containing the liquid crystal composition. The liquid crystal composition of the present invention comprises a compound represented by Formula I, a compound represented by Formula II and a compound represented by Formula III, wherein the mass percentage content of the compound represented by Formula I is not less than 30%. The liquid crystal composition provided by the present invention has an appropriate optical anisotropy, an appropriate dielectric anisotropy, especially a relatively low rotational viscosity, a good low-temperature mutual solubility and a good reliability, especially good frequency dependence.

##STR00001##

A liquid crystal composition, a liquid crystal display element and a liquid crystal display including the liquid crystal composition, belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I and one or more compounds represented by formula II. The liquid crystal composition can increase the dielectric anisotropy and improve the voltage retention rate. ##STR00001##

A liquid-crystalline medium which comprises at least one compound selected from the group of compounds of the formulae IA to IH,

##STR00001##

in which Z.sup.1 denotes a single bond, —CH.sub.2CH.sub.2—, —CH═CH—, —CH.sub.2O—, —OCH.sub.2—, —CF.sub.2O—, —OCF.sub.2—, —COO—, —OCO—, —C.sub.2F.sub.4—, —(CH.sub.2).sub.4—, —CHFCHF—, —CF.sub.2CH.sub.2—, —CH.sub.2CF.sub.2—, —C≡C—, —CF═CF—, —CH═CHCHO— or —CH.sub.2CF.sub.2O—,
and the use thereof for an active-matrix display, in particular based on the VA, PSA, PS-VA, PALC, FFS, PS-FFS, SA-VA, PS-IPS or IPS effect.

To suppress a phenomenon where an optical axis of the optically anisotropic layer is tilted when the optically anisotropic layer is produced by using a liquid crystalline compound showing smectic phase as a materials showing a higher level of orderliness. An optically anisotropic layer wherein a polymerizable composition, containing one or more polymerizable rod-like liquid crystal compound showing a smectic phase, is fixed in a state of smectic phase, and a direction of maximum refractive index of the optically anisotropic layer is inclined at 10° or smaller to the surface of the optically anisotropic layer, a method for manufacturing the same, a laminate and a method for manufacturing the same, a polarizing plate, a liquid crystal display device, and an organic EL display device.

The present invention relates to a liquid crystalline medium comprising dichroitic dyes made of benzothiadiazoles and related extended heterocyclic derivatives, the use of said medium for optical, electro-optical and electronic purposes, in particular in devices for regulating the passage of radiation energy from an outside space into an inside space, for example in windows. The invention further relates to devices containing the liquid crystalline medium according to the invention. Some new dichroitic dyes are disclosed.