Abstract: 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.

Abstract: A diacetylene-based lyotropic liquid crystal mixture according to an embodiment includes by mixing diacetylene-based compounds containing iodide and triiodide Chemical Formula 1 and Chemical Formula 2. The lyotropic liquid crystal mixture may be prepared by synthesizing an [X]—C—Rm-[D]-Rn compound, synthesizing an [A+X?]—C—Rm-D-Rn compound, and synthesizing an [A+B?]—C—Rm-D-Rn compound. A thin polarizing film may be prepared through simple coating of a lyotropic liquid crystal mixture prepared by mixing diacetylene-based compounds containing iodide and triiodide.

Abstract: A diacetylene-based lyotropic liquid crystal mixture according to an embodiment includes by mixing diacetylene-based compounds containing iodide and triiodide Chemical Formula 1 and Chemical Formula 2. The lyotropic liquid crystal mixture may be prepared by synthesizing an [X]—C—Rm-[D]-Rn compound, synthesizing an [A+X?]—C—Rm-D-Rn compound, and synthesizing an [A+B?]—C—Rm-D-Rn compound. A thin polarizing film may be prepared through simple coating of a lyotropic liquid crystal mixture prepared by mixing diacetylene-based compounds containing iodide and triiodide.

Abstract: A liquid crystal device that includes two substrates that face each other, a liquid crystal cell interposed between the two substrates, and a liquid crystal alignment layer interposed between the liquid crystal cell and at least one of the two substrates, the liquid crystal alignment layer includes a plurality of spherical or spherical-like core particles having a diameter of 10 nm to 1 ?m.

Abstract: Due to excellent processability of the POSS-dendron-structured liquid crystal compound according to the present invention, it is possible to coat and print on the compound and, also, to manufacture large size flexible devices. According to the present invention, it is possible to maximize the physical bond strength between liquid crystals and, thus, to form higher-order structures by controlling the physical bond strength. Since the POSS-dendron-structured liquid crystal compound of the present invention introduces non-functional groups to inorganic chemicals in contrast to the conventional liquid crystals, the compound disperses well into general types of solvents. In addition, the chemical and mechanical properties of the compound of the invention, such as increase of maximum allowable temperature, inhibition of oxidation, increase of surface hardness, etc., improves since polysilsesquioxane includes reactive or non-reactive organic compounds.

Abstract: A liquid crystal device that includes two substrates that face each other, a liquid crystal cell interposed between the two substrates, and a liquid crystal alignment layer interposed between the liquid crystal cell and at least one of the two substrates, the liquid crystal alignment layer includes a plurality of spherical or spherical-like core particles having a diameter of 10 nm to 1 ?m.

Abstract: Due to excellent processability of the POSS-dendron-structured liquid crystal compound according to the present invention, it is possible to coat and print on the compound and, also, to manufacture large size flexible devices. According to the present invention, it is possible to maximize the physical bond strength between liquid crystals and, thus, to form higher-order structures by controlling the physical bond strength. Since the POSS-dendron-structured liquid crystal compound of the present invention introduces non-functional groups to inorganic chemicals in contrast to the conventional liquid crystals, the compound disperses well into general types of solvents. In addition, the chemical and mechanical properties of the compound of the invention, such as increase of maximum allowable temperature, inhibition of oxidation, increase of surface hardness, etc., improves since polysilsesquioxane includes reactive or non-reactive organic compounds.

Abstract: The present invention relates to a lyotropic chromonic liquid crystal composition, a method for manufacturing a lyotropic chromonic liquid crystal coating film and a lyotropic chromonic liquid crystal coating film manufactured thereby. The lyotropic chromonic liquid crystal composition of the present invention includes chromonic liquid crystal compounds and monomers each having opposing acid-base properties. Use of the lyotropic chromonic liquid crystal composition in the formation of optical films leads to improvements in electrical and optical properties such as mechanical strength, an insulating characteristic and a refractive index.

Abstract: The present invention relates to a lyotropic chromonic liquid crystal composition, a method for manufacturing a lyotropic chromonic liquid crystal coating film and a lyotropic chromonic liquid crystal coating film manufactured thereby. The lyotropic chromonic liquid crystal composition of the present invention includes chromonic liquid crystal compounds and monomers each having opposing acid-base properties. Use of the lyotropic chromonic liquid crystal composition in the formation of optical films leads to improvements in electrical and optical properties such as mechanical strength, an insulating characteristic and a refractive index.

Abstract: The present invention relates to fluorine-containing triarylphosphine oxide derivatives and preparing method thereof. Particularly, the present invention relates to both fluorine- and phosphine oxide-containing triarylphosphine oxide derivatives which can be utilized in preparing polyimides having excellent adhesion, fire retardancy and low dielectric constant as well as superior thermal stability and mechanical properties, and preparing method thereof.

Abstract: The present invention relates to fluorine-containing triarylphosphine oxide derivatives and preparing method thereof. Particularly, the present invention relates to both fluorine- and phosphine oxide-containing triarylphosphine oxide derivatives which can be utilized in preparing polyimides having excellent adhesion, fire retardancy and low dielectric constant as well as superior thermal stability and mechanical properties, and preparing method thereof.

Abstract: The invention relates to triarylphosphine oxide derivatives containing fluorine substituents that are useful as a monomer in preparation of polymers with improved properties such as chemical resistance and electrical insulating property as well as adhesiveness and flame retardancy. The triarylphosphine oxide derivatives containing fluorine substituents are represented by the chemical formula 1: wherein R1 and R2 are independently a fluorine-substituted alkyl group; and X is hydrogen, a nitro group, or an amine group.