111 results about "Guest host" patented technology

The invention discloses a light controlling apparatus and a transparent display including the same. The light controlling apparatus includes a first electrode on a first substrate; a first alignment film on the first electrode; a second electrode on a second substrate facing the first substrate; a second alignment film on the second electrode; and a guest-host liquid crystal layer having cholesteric liquid crystals and dichroic dyes between the first and second alignment films. The first and second electrodes provide a vertical electric field, and at least one of the first and second electrodes provides a horizontal electric field. The cholesteric liquid crystals have a homeotropic state when an electric field in a first direction is applied to the guest-host liquid crystal layer to realize a transparent mode. The cholesteric liquid crystals have a focal conic state when an electric field in a second direction is applied to realize a light shielding mode. The same state of the cholesteric liquid crystals and the dichroic dyes is maintained when no electric field is applied to the guest-host liquid crystal.

The present invention discloses a dichroic dye composition, a black guest-host liquid crystal composition exhibiting a high order parameter using the dichroic dye composition, and a liquid crystal element with high contrast, wherein the solubility of the dichroic dye in the liquid crystal Sufficiently high and small wavelength dispersion of absorbance over a wide wavelength range. The dichroic dye composition comprises at least one dichroic dye selected from group (I) shown above, at least one dichroic dye selected from group (II) shown below, and at least one dichroic dye selected from group (II) shown below At least one dichroic dye from group (III).

The present invention relates generally to the field of organic chemistry and particularly to the nematic lyotropic liquid crystal solution and negative dispersion retardation plate for application in 3D liquid crystal displays. The negative dispersion retardation plate comprises a substrate, and at least one optically anisotropic retardation layer comprising a multi-component guest-host composition coated onto the substrate.

Thermochromic filters are constructed using absorptive, reflective, or fluorescent dyes, molecules, polymers, particles, rods, or other orientation-dependent colorants that have their orientation, order, or director influenced by carrier materials, which are themselves influenced by temperature. These order-influencing carrier materials include thermotropic liquid crystals, which provide orientation to dyes and polymers in a Guest-Host system in the liquid-crystalline state at lower temperatures, but do not provide such order in the isotropic state at higher temperatures. The varying degree to which the absorptive, reflective, or fluorescent particles interact with light in the two states can be exploited to make many varieties of thermochromic filters. Thermochromic filters can control the flow of light and radiant heat through selective reflection, transmission, absorption, and / or re-emission. The filters have particular application in passive or active light-regulating and temperature-regulating films, materials, and devices, and particularly as construction materials and building and vehicle surfaces.

Polymers and compounds having high-triplet-energy; guest-host films comprising the polymers or compounds as hosts and phosphorescent compounds as guests; and electroluminescent devices that include the films.