Abstract: Disclosed is a novel dicarboxylic acid salt of sibutramine, which has good physicochemical properties. Also disclosed are a method of preparing the compound and a pharmaceutical composition comprising the compound.

Abstract: A backlight unit usable in an LCD includes a point light source circuit board, a plurality of point light sources seated on the point light source circuit board, and a diffusion lens provided on each point light source and comprising a depressed point and a curved surface radially protruding from the depressed point.

Abstract: A backlight unit for a LCD panel includes a point light source circuit board, a plurality of point light sources mounted on the point light source circuit board, and an optical plate disposed on an upper part of the point light source and having a Fresnel lens formed on a planar surface the optical plate. Accordingly the back light unit has a good light emitting efficiency.

Abstract: A backlight unit includes a point light source circuit board, a plurality of point light sources mounted onto the point light source circuit board, and an optical plate having a first surface that faces toward the point light source and is formed with an accommodating part to accommodate the point light source.

Abstract: An optical module includes a point light source device and an optical lens. The point light source device generates light. The optical lens includes an inner curved surface and an outer curved surface. The inner curved surface has a first roughly ellipsoidal shape having a first major axis and a first minor axis that is substantially perpendicular to the first major axis. The outer curved surface has a second roughly ellipsoidal shape having a second major axis that is substantially perpendicular to the first axis and the second minor axis that is substantially perpendicular to the second major axis. The light generated by the point light source device enters the optical lens through the inner curved surface and exits from the optical lens through the outer curved surface. Therefore, the number of optical modules used in a display device may be reduced to lower manufacturing cost thereof.

Abstract: Provided is an alignment method of a liquid crystal of a ferroelectric liquid crystal (FLC) device. An optical axis direction of a liquid crystal molecule is controlled by applying an alternating current (AC) electric field to the liquid crystal in an N*-to-SmC* phase transition temperature area. Since the optical axis direction can be changed with a desired temperature, an optical characteristic of a panel can be optimized.

Abstract: A method of aligning an FLC using an ultraviolet irradiation is provided. In the method, the FLC includes a plurality of liquid crystal molecules each having a first group, and second through fourth groups arranged in a regular tetrahedron together with an axis of the first group centering on a chiral center, the method comprising: forming a photo-alignment layer on a substrate; and irradiating a polarized ultraviolet onto the photo-alignment layer formed on the substrate with an inclination angle, wherein an incident plane of the irradiated ultraviolet and the first group are not on the same plane but are perpendicular to each other, thereby bestowing a selectivity to one axis of the second through fourth groups. By aligning the CDR-FLC according to the present invention, and employing the aligned CDR-FLC in an LCD, the picture contrast ratio and the picture uniformity are enhanced.

Abstract: A method and apparatus for aligning a ferroelectric liquid crystal device and are provided. The method of aligning a ferroelectric liquid crystal device includes placing a liquid crystal device panel in a chamber maintained at a constant temperature; heating a lower substrate of the liquid crystal device to a temperature at which the liquid crystal changes into an isotropic phase; applying 1-100 kPa of pressure to the liquid crystal device; and cooling the lower substrate of the liquid crystal device slowly. A liquid crystal device aligned by the method is aligned uniformly across the entire panel.

Abstract: A reflecting type liquid crystal display device having a perpendicularly aligned structure and shorter response time and a projector using the same are provided. The reflecting type liquid crystal display device includes a first substrate having a reflective electrode, a second substrate having a transparent electrode, first and second alignment layers provided on the first substrate and the second substrate to be opposed to and face each other, a spacer interposed between the first alignment layer and the second alignment layer to form a predetermined cell gap therebetween, and vertically aligned liquid crystals injected into the cell gap, the cell gap being not greater than 1.0 ?m, the dielectric anisotropy of the liquid crystals being negative value, and the refractive index anisotropy of the liquid crystals being not less than 0.14.

Abstract: A method of manufacturing a ferrodielectric liquid crystal display device includes the steps of injecting melted ferrodielectric liquid crystal in a cell formed between a lower structure body and an upper structure body each having a substrate, an electrode layer, and an orientation film and sealing the cell; cooling to obtain phase transitions of the ferrodielectric liquid crystal corresponding to a bookshelf structure; applying dc potentials to the electrode layers at temperature ranging from temperatures higher than phase transition temperatures to temperatures lower than phase transition temperatures, stopping the dc potential applications and cooling until below a predetermined temperature, and applying a reverse potential to the electrode layers and cooling again. The ferrodielectric liquid crystal display device produced by such a manufacturing method can display clear black-and-white states with the liquid crystal layers having a mono domain of the bookshelf structure.

Abstract: Provided is an alignment method of a liquid crystal of a ferroelectric liquid crystal (FLC) device. An optical axis direction of a liquid crystal molecule is controlled by applying an alternating current (AC) electric field to the liquid crystal in an N*-to-SmC* phase transition temperature area. Since the optical axis direction can be changed with a desired temperature, an optical characteristic of a panel can be optimized.

Abstract: A method of manufacturing a ferrodielectric liquid crystal display device includes the steps of injecting melted ferrodielectric liquid crystal in a cell formed between a lower structure body and an upper structure body each having a substrate, an electrode layer, and an orientation film and sealing the cell; cooling to obtain phase transitions of the ferrodielectric liquid crystal corresponding to a bookshelf structure; applying dc potentials to the electrode layers at temperatures ranging from temperatures higher than phase transition temperatures to temperatures lower than phase transition temperatures, stopping the dc potential applications and cooling until below a predetermined temperature, and applying a reverse potential to the electrode layers and cooling again. The ferrodielectric liquid crystal display device produced by such a manufacturing method can display clear black-and-white states with the liquid crystal layers having a mono domain of the bookshelf structure.