Abstract: A backlight unit and a liquid crystal display device having the same which may facilitate control of output light through a light guide plate, improve light concentration effect, and reduce moire. The backlight unit includes light sources generating light, a light guide plate guiding light through an incidence surface opposite the light sources, emitting the light through an emission surface, and having lower patterns of a prism shape formed on the lower surface of the light guide plate opposite the emission surface by inclined surfaces and sub-inclined surfaces, and at least one optical sheet stacked on the emission surface.

Abstract: The present invention provides a method for preparing an extract fraction reinforced with ginsenoside Rg1 or Rb1 from ginseng. The method for preparing an extract fraction reinforced with ginsenoside Rg1 comprises the steps of: concentrating an alcohol extract of ginseng and then adsorbing the extract diluted in water by adding the extract to an adsorption resin; passing distilled water through the adsorption resin, then eluting and removing unadsorbed ingredients; and adding 30 to 40 v/v % alcohol to the adsorption resin to obtain an eluate. The method for preparing an extract fraction reinforced with ginsenoside Rb1 comprises the steps of: concentrating an alcohol extract of ginseng and then adsorbing the extract diluted in water by adding the extract to an adsorption resin; passing distilled water through the adsorption resin, then eluting and removing unadsorbed ingredients; and adding 50 to 80 v/v % alcohol to the adsorption resin and then eluting.

Abstract: Disclosed is an apparatus for self-extracting a cell using a magnetic field. The apparatus for self-extracting the cell using the magnetic field according to the present invention includes a flow path casing including an upper substrate and a lower substrate having a magnetic property combined with each other, and a fluid path formed to fluidize a cell solution therein; a separation portion disposed on the fluid path and provided with a separation channel selectively passing only an effective cell that is a separation target in the cell included in the cell solution therethrough; and a magnetic field control portion forming the magnetic field in the flow path portion to separate the cell blocking the separation channel from the separation channel.

Abstract: An apparatus for separating cells using magnetic force includes: a separation channel portion including ferromagnetic particles, and provided with a flow path through which a cell fluid containing a plurality of cells having at least one of diamagnetic and paramagnetic properties; and a magnetic field controller that generates a magnetic field within the flow path so that the cells in the cell fluid flow within the flow path and are separated by height by a magnetic field. Accordingly, there are provided an apparatus for separating cells using magnetic force and a cell separation method using the same, by which cells can be easily separated using magnetic force.

Abstract: A method of manufacturing a roll for roll printing/roll imprinting is provided. The method includes preparing an exterior on one surface of which a printed pattern of a predetermined shape is formed and that has magnetic power and having the other surface of the exterior contact an external surface of a central roll so that the exterior is attached to the central roll having magnetic power by magnetic power. Therefore, the method of manufacturing a roll for roll printing/roll imprinting capable of reducing production cost to massively manufacture the roll for roll printing/roll imprinting is provided.

Abstract: A lithography apparatus is provided. The lithography apparatus includes: a polarizing filter that converts incident light to first polarized light having a single polarizing direction; and a photo mask that is disposed to be separated from the polarizing filter and in which a polarizing pattern having a polarization axis of a predetermined direction in order to convert the applied first polarized light to second polarized light by adjusting a transmittance of the first polarized light and a light blocking pattern that blocks the first polarized light are formed, wherein by radiating light in which a transmittance is adjusted in the photo mask, the photoresist is patterned.

Abstract: The present invention related to an antihypertensive composition containing a fraction enriched with ginsenosides of ginseng. The composition according to the present invention increases the production of nitric oxide through the activation of nitric oxide synthase, and thus exhibits superior antihypertensive effects through the vasodilatory activity. Consequently, the composition of the present invention can be used as a composition for preparing functional health foods for preventing and treating hypertension and various cardiovascular diseases caused by complications of hypertension.

Abstract: The present invention provides a method for preparing an extract fraction reinforced with ginsenoside Rg1 or Rb1 from ginseng. The method for preparing an extract fraction reinforced with ginsenoside Rg1 comprises the steps of: concentrating an alcohol extract of ginseng and then adsorbing the extract diluted in water by adding the extract to an adsorption resin; passing distilled water through the adsorption resin, then eluting and removing unadsorbed ingredients; and adding 30 to 40 v/v % alcohol to the adsorption resin to obtain an eluate. The method for preparing an extract fraction reinforced with ginsenoside Rb1 comprises the steps of: concentrating an alcohol extract of ginseng and then adsorbing the extract diluted in water by adding the extract to an adsorption resin; passing distilled water through the adsorption resin, then eluting and removing unadsorbed ingredients; and adding 50 to 80 v/v % alcohol to the adsorption resin and then eluting.

Abstract: Disclosed are a novel deuterated aryl amine compound capable of enhancing thermal stability, hole transporting capability, luminescence efficiency, etc. of an organic light emitting diode at the time of being used as a hole-injecting layer, a preparation method thereof, and an organic light emitting diode using the same.

Abstract: A device for forming a surface pattern of fluid includes: fluid that can be hardened under a predetermined condition; a base unit to which the fluid is applied; and a vibration unit for vibrating the applied fluid to form a waveform on a surface of the fluid. A method for forming a surface pattern of fluid includes: a fluid receiving stage for applying fluid to a base unit; a vibration stage for vibrating the fluid applied to the base unit to form a waveform on a surface of the fluid; and a hardening stage for hardening the fluid on which the waveform is formed. The disclosed device for forming a surface pattern of fluid and the forming method thereof have an advantage of easily forming various waveform patterns on the surface of the fluid by a vibration unit for vibrating the fluid with various waveforms, frequencies, and amplitudes.

Abstract: Disclosed is a fabrication method of products with closed channels by injection molding, which includes: a channel substrate mounting step of mounting a channel substrate comprising a plurality of opened micro-channels thereon to a mold; and a substrate cover molding step of molding a substrate cover by the injection molding on an upper surface of the channel substrate mounted to the mold, the substrate cover being coupled to the channel substrate while being molded. With this, the products with the closed channels can be fabricated without any additional coupling process between the channel substrate having the opened channels and the substrate cover, thereby simplifying a fabrication process and enhancing work efficiency.

Abstract: Disclosed is a fabrication method of products with closed channels by injection molding, which includes: a channel substrate mounting step of mounting a channel substrate comprising a plurality of opened micro-channels thereon to a mold; and a substrate cover molding step of molding a substrate cover by the injection molding on an upper surface of the channel substrate mounted to the mold, the substrate cover being coupled to the channel substrate while being molded. With this, the products with the closed channels can be fabricated without any additional coupling process between the channel substrate having the opened channels and the substrate cover, thereby simplifying a fabrication process and enhancing work efficiency.

Abstract: Disclosed are a novel deuterated aryl amine compound capable of enhancing thermal stability, hole transporting capability, luminescence efficiency, etc. of an organic light emitting diode at the time of being used as a hole-injecting layer, a preparation method thereof, and an organic light emitting diode using the same.

Abstract: Disclosed are a deuterated novel iridium complex phosphorescent material used as a light-emitting layer material of an organic electroluminescence device, a preparation method thereof and an organic electroluminescence device using the same. Compared with an organic electroluminescence device using the prior art light-emitting layer with no deuterium substitution, the organic electroluminescence device using the deuterated material of the present invention has improved luminescence efficiency, luminance, power efficiency, thermal stability and the like.

Abstract: A flat type fuel cell assembly having a connector. The flat type fuel cell assembly further includes: a fuel cell main body having membrane-electrode assemblies, each membrane-electrode assembly including an electrolyte membrane, and anode and cathode electrodes being placed at opposite sides of the electrolyte membrane; anode collectors corresponding to and being in contact with the anode electrodes of the fuel cell main body, each anode collector having a terminal protruded outwardly from the fuel cell main body; cathode collectors corresponding to and being in contact with the cathode electrodes of the fuel cell main body, each cathode collector having a terminal protruded outwardly from the fuel cell main body. Here, the connector has a wiring line to electrically connect the plurality of terminals of the anode and cathode collectors in series. With this configuration, a separate wiring process can be omitted and a manufacturing process can be simplified.

Abstract: A plate type fuel cell system includes: an electric generator including a membrane-electrode assembly having a plurality of anode electrodes and a plurality of cathode electrodes arranged on opposite surfaces of a proton-exchange membrane and spaced apart from each other; an anode separator facing the plurality of anode electrodes and having a fluid channel adapted to receive a hydrogen containing fuel; a cathode separator facing the plurality of cathode electrodes and having an air ventilating hole; a fuel distributor having an accommodating part defined by a rib to accommodate the anode separator and adapted to distribute the hydrogen containing fuel to each of the plurality of anode electrodes, the rib being partially cut out to define a rib cutting part; and a sealing member contained within the rib cutting part.

Abstract: A composite separator plate for a fuel cell having a low-carbon loading and a high-polymer loading is disclosed. The separator plate composition includes a percentage of conductive fibrous filler having a relatively high aspect-ratio oriented through the thickness of the plate to achieve desired electrical and thermal conductivity requirements. A method of manufacturing the fuel separator plate having such fibers disposed in a through-plane orientation is also disclosed. The method includes forming a separator plate having a land height for orienting the fibers in a desired through-plane direction, then removing a portion of the land height to obtained the desired geometric configuration for the separator plate.

Abstract: A composite separator plate for a fuel cell having a low-carbon loading and a high-polymer loading is disclosed. The separator plate composition includes a percentage of conductive fibrous filler having a relatively high aspect-ratio oriented through the thickness of the plate to achieve desired electrical and thermal conductivity requirements. A method of manufacturing the fuel separator plate having such fibers disposed in a through-plane orientation is also disclosed. The method includes forming a separator plate having a land height for orienting the fibers in a desired through-plane direction, then removing a portion of the land height to obtained the desired geometric configuration for the separator plate.