Provided are a light color conversion material and a light color conversion ink. The light color conversion material includes a quantum dot and a cross-linkable cholesteric liquid crystal material. The cross-linkable cholesteric liquid crystal material encapsulates the quantum dot. The cross-linkable cholesteric liquid crystal material has Bragg diffraction characteristic after cross-linking, and blue light with a wavelength between 400 nm and 480 nm may be reflected by the cross-linked cholesteric liquid crystal material and transmitted through the cross-linked cholesteric liquid crystal material at the same time.

A haptic actuator is provided. The haptic actuator comprises a housing having a top and a bottom and at least one sidewall between the top and bottom first and second permanent magnets carried by the top and bottom, respectively, of the housing, a field member carried by the housing and comprising at least one coil between the first and second permanent magnets, first and second ends; and optionally, one or more mechanical stiffeners carried by the top of the housing, the bottom of the housing, or both. The haptic actuator comprises a polymer composition that has a melting temperature of about 250° C. or more and a tensile modulus of about 16,000 MPa or more as determined in accordance with ISO 527:2019 at a temperature of 23° C.

The invention relates to a light modulation element comprising a cholesteric liquid crystalline medium sandwiched between two substrates, each provided with an electrode structure, wherein at least one of the substrates is additionally provided with an alignment layer which is provided with a photoresist pattern consisting of periodic substantially parallel stripes. The invention is further related to a method of production of said light modulation element and to the use of said light modulation element in various types of optical and electro-optical devices, such as electro-optical displays, liquid crystal displays (LCDs), non-linear optic (NLO) devices, and optical information storage devices.

A grating is provided. The grating includes a first substrate and a second substrate opposite the first substrate, a plurality of first transparent electrodes arranged at equal intervals along a surface of the first substrate and between the first substrate and the second substrate, and a plurality of second transparent electrodes each arranged along a surface of the second substrate and opposite to a respective one of the plurality of first transparent electrodes, and a liquid crystal mixture layer arranged between each pair of the first transparent electrodes and respective second transparent electrodes, wherein a liquid crystal mixture in the liquid crystal mixture layer is switchable between a smectic phase and a cholesteric phase such that the liquid crystal mixture is transparent in the smectic phase and black in the cholesteric phase.

Liquid crystal (LC) media comprising polymerisable compounds as further specified in the description and 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.

The present invention relates to liquid crystalline (LC) medium, to a method of its production and to the use of such LC media in polymer network liquid crystalline (PNLC) light modulation elements operated in the normally transparent mode. Furthermore, the present invention relates to such light modulation elements, as such, to the use of such light modulation elements as light shutters for transparent OLED displays, to the use of such light modulation elements in smart windows, and to a method of production of such light modulation elements according to the present invention.

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.

A compound has a strong HTP and a high temperature dependence of HTP. In addition, a liquid crystal composition, a cured substance, an optical anisotropic boy, and a reflection film the above-described compound. The compound is represented by General Formula (1), wherein X.sup.1 and X.sup.2 each independently represent —CH═CH—or C≡C—. ##STR00001##

There is provided a ferroelectric liquid crystal (FLC) material for the deformed helix FLC (DHFLC) electro-optical mode devices and shows optimum electro-optical properties including high tilt angle (>38°), and short helix pitch (<120 nm), and spontaneous polarization (>100 nC/cm.sup.2) comprising at least two components, wherein at least one FLC component is a chiral compound of Formula (I):

##STR00001##

particularly:

##STR00002##

wherein W.sub.1 and W.sub.2 are chiral groups with polar substituent at chiral centre, A and B are independently N atom or CH groups providing that at least one of A or B is N atom. Other various groups are as defined herein.

Proposed is a dielectric material of a liquid-crystal polymer composition including a low-dielectric and high-heat-dissipating liquid-crystal-material monomer for a millimeter wave band and a polymer thereof, and more particularly, a liquid-crystal polymer composition including a low-dielectric and high-heat-dissipating liquid-crystal-material monomer for a millimeter wave band and a polymer thereof, the liquid-crystal-material monomer including a mesogen core, a silane-based group, and a polymerization reactive group.