The present invention provides an ethylene-vinyl acetate copolymer, a liquid crystal film layer, a display panel and a preparing method thereof. The ethylene-vinyl acetate copolymer is characterized in that the mass percent of the vinyl acetate monomeric unit is 20-35% and the number average molecular weight of the ethylene-vinyl acetate copolymer is 10,000-100,000. The ethylene-vinyl acetate copolymers of the invention form a network structure and have sheet shape in microscopic morphology, which allow liquid crystal molecules to be anchored in meshes of the network structure and therefore to be induced to orientate in accordance with the arrangement of the ethylene-vinyl acetate copolymers, thereby achieving the instant read-in and output of the display information. Particularly, with the ethylene-vinyl acetate copolymers, the adapted orientation of the liquid crystal molecules under the bending state of the display panel is achieved and the instant read-in and output of the display information is realized.

A bistable liquid crystal film, comprising: a. at least one first transparent flexible film coated with conductive material; b. at least one layer of liquid crystal dispersions characterized by at least two modes (i) scattering mode-A; and (ii) transparent mode-B; allocated between said flexible transparent conductive film and at least one second transparent flexible conductive film; wherein said liquid crystal dispersion comprises metal-organic mesogens.

The present invention is to find appropriate manufacturing conditions for obtaining a homogeneous scattering state, a homogeneous transparent state, and a homogeneous driving voltage state and to obtain a polymer dispersed liquid crystal display element that has homogeneous properties. A polymer dispersed liquid crystal display element having excellent homogeneity can be obtained by irradiating a light control layer-forming material containing a liquid crystal material and a polymerizable composition with ultraviolet light under specific ultraviolet irradiation conditions to polymerize the polymerizable composition.

A liquid crystal display device includes: a substrate; a thin film transistor in a pixel region over the substrate; a common electrode over the thin film transistor; a pixel electrode connected to the thin film transistor; and a liquid crystal layer including a plurality of liquid crystal capsules over the common electrode and the pixel electrode, wherein each of the plurality of liquid crystal capsules includes a shell and a core having a plurality of liquid crystal molecules therein, and wherein a gap distance between the liquid crystal molecules in adjacent liquid crystal capsules is equal to or greater than 20 nm and equal to or smaller than 0.3 times of a capsule diameter of the adjacent liquid crystal capsules.

There is provided a light control device that solves various practical problems, including the adhesive strength between layers, of a light control device comprising a polymer/liquid crystal composite derived from a polymerizable composition comprising an acrylic monomer and ITO layers. In the light control device, ITO layers are respectively bonded to both surfaces of a polymer/liquid crystal composite material layer in which a liquid crystal material is dispersed in a polymer material obtained by polymerizing an acrylic monomer, an amount of the acrylic monomer is in the range of 30 to 45% by weight based on a total amount of the acrylic monomer and the liquid crystal material, and silane coupling agent layers are respectively interposed between the polymer/liquid crystal composite material layer and the ITO layers.

A polymer is obtained by polymerizing a monomer having two or more radical polymerizable double bonds and one or more hydroxyl groups. A composition including the polymer, an optical film including a cholesteric liquid crystal layer containing the polymer on a support, and a liquid crystal display device including at least a backlight unit including the optical film and a liquid crystal cell are provided.

Shown is a method for producing a liquid crystal capsule having a particle diameter of 30 to 150 nanometers, and a method for producing a liquid crystal capsule without using a homogenizer. The disclosure concerns a method for producing a liquid crystal capsule, including a step of preparing an emulsion by performing phase inversion emulsification of a mixed material obtained by mixing a liquid crystal composition, a monomer, a surfactant, and a polymerization initiator; and a step of producing a liquid crystal capsule by applying a coacervation method to the emulsion. The disclosure also concerns a liquid crystal capsule having a liquid crystal composition, a surfactant and a capsule wall, wherein the capsule wall has a closed curved shape, the liquid crystal composition and a hydrophobic moiety of the surfactant are arranged inside the capsule wall, and a hydrophilic moiety of the surfactant is arranged outside the capsule wall.

A liquid crystal composition is described, containing a chiral agent and achiral component T containing at least one compound 1 having an unsubstituted or methyl group-substituted dioxane ring and having at least one —COO— or —CF.sub.2O— as a connecting group, and exhibiting an optically isotropic liquid crystal phase.

Disclosed herein is a light emitting device and method of manufacturing such a device comprised of a series of photopolymerizable, chiral liquid crystalline layers that can be solvent cast on a substrate. The mixture of chiral materials in each successive layer may be blended in such a way that each layer has the same chiral pitch. Further the chiral materials in each layer may also be blended so that the ordinary and extraordinary refractive indices in each layer match the other layers such that the complete assembly of layers will optically function as a single relatively thick layer of chiral liquid crystal. The chiral nematic material in each layer can spontaneously adopt a helical structure with a helical pitch. The light emitting layers of the light emitting device can further comprise electroluminescent material that emits light into the band edge light propagation modes of the photonic crystal.

The present provides a method of fabricating a PDLC thin film. The method of fabricating the PDLC of the present application forms the first solution by mixing the liquid crystal and the graphene nanoparticles; prepares the prepolymer by using the citric acid and the 1,8-octanediol, or the citric acid, the 1,8-octanediol and the 1,8-octanediol; forms the second solution by dissolving the prepolymer in the anhydrous ethanol; then obtains the mixture prepolymer of the polymer dispersed liquid crystal and the graphene nanoparticles by mixing and uniformly stirring the first solution and the second solution; and obtains the PDLC thin film after the mixture prepolymer is polymerized for several days. The present application indirectly changes dielectricity of the polymer matrix by combining the polymer dispersed liquid crystal and the graphene nanoparticles, so as to enhance the response speed of the polymer dispersed liquid crystal, to reduce the driving voltage of the polymer dispersed liquid crystal, to construct a new type of a combination of the liquid crystal and the polymer in the polymer dispersed liquid crystal, and the size and the thickness of the PDLC thin film fabricated by the method of fabricating the PDLC thin film of the present application are adjustable, and applications thereof are convenient.