Liquid-crystalline (LC) media having positive dielectric anisotropy and liquid-crystal displays (LCDs) containing these media, especially displays addressed by an active matrix and in particular to LC displays of the TN, PS-TN, STN, TN-TFT, OCB, IPS, PS-IPS, FFS, HB-FFS, XB-FFS, PS-FFS, SA-HB-FFS, SA-XB-FFS, polymer stabilised SA-HB-FFS, polymer stabilised SA-XB-FFS, positive VA or positive PS-VA type.

Provided are a cholesteric liquid crystal film including a cholesteric liquid crystal, in which, in a cross section in a thickness direction observed with a microscope, the cholesteric liquid crystal film has a stripe pattern in which dark portions and bright portions are alternately arranged, and has a folded structure due to the dark portions at a surface layer portion of one main surface of a pair of main surfaces; and a manufacturing method thereof.

The present invention relates to azo dye of formula I

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defined in claim 1, to a liquid crystalline medium comprising said azo dye, the use of said medium for optical, electrooptical and electronic purposes, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in windows. The invention further relates to a device containing the liquid crystalline medium according to the invention.

The present invention relates to compositions comprising a combination of benzothiadiazole and thiadiazoloquinoxaline derivatives, to liquid-crystalline media containing the compositions, and to the use of the compositions and the media in optical, electronic and electro-optical devices, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in switchable windows.

The present invention relates to compositions comprising a combination of benzothiadiazole and thiadiazoloquinoxaline derivatives, to liquid-crystalline media containing the compositions, and to the use of the compositions and the media in optical, electronic and electro-optical devices, in particular in devices for regulating the passage of energy from an outside space into an inside space, for example in switchable windows.

The disclosure provides a liquid crystal display (LCD) panel, a manufacturing method thereof, and an LCD device. The LCD panel adopts a structure with multiple electrodes and dual-frequency liquid crystals. When a temperature of the LCD panel is low (below 0° C.), the LCD panel is driven at high frequency, so that it emits more heat. Therefore, a working temperature of the LCD panel is increased without adding a heating element. LCD devices using such LCD panels have wide working temperature ranges, and are well suited to be used outdoors.

Disclosed is a polymerizable liquid crystal material wherein an amount of a salt represented by the following formula (I) is less than 0.01 parts by mass per 100 parts by mass of a polymerizable liquid crystal compound, and an amount of a nitrogen-containing compound represented by the following formula (II) is 0.01 parts by mass or less per 100 parts by mass of the polymerizable liquid crystal compound. R.sup.1 to R.sup.5 each independently represent a hydrogen atom or a C1-C7 alkyl group, R.sup.6 and R.sup.7 represents a hydrogen atom, and X represents F.sup.−, Br.sup.−, Cl.sup.−, I.sup.−, HSO.sub.4.sup.−, 1/2(HPO.sub.4.sup.2−), H.sub.2PO.sub.4.sup.−, R—C(═O)—O.sup.−, 1/2(.sup.−O—(C═O)—R′—(C═O)—O.sup.−) or R—SO.sub.3.sup.−, where R represents a hydrogen atom or a monovalent hydrocarbon group, and R′ represents a single bond or a divalent hydrocarbon group. ##STR00001##

The present invention relates to liquid crystal (LC) media comprising one or more polymerisable compounds as further specified in the description or claims and a self-alignment additive for vertical alignment. The media are adapted for use in LC displays, especially in LC displays of the polymer-sustained alignment type.

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.

A liquid crystal composition includes the following compounds: (in a range of 21.5 to 26.5 parts by weight) a compound represented by a first chemical formula, (in a range of 2.5 to 7.5 parts by weight) a compound represented by a second chemical formula, (in a range of 12.5 to 17.5 parts by weight) a compound represented by a third chemical formula, (in a range of 5.5 to 10.5 parts by weight) a compound represented by a fourth chemical formula, (in a range of 7.5 to 12.5 parts by weight) a compound represented by a fifth chemical formula, (in a range of 2 to 7 parts by weight) a compound represented by a sixth chemical formula, (in a range of 10.5 to 15.5 parts by weight) a compound represented by a seventh chemical formula, and (in a range of 13 to 18 parts by weight) an compound represented by an eighth chemical formula 8.