Abstract: Disclosed is a display device configured such that a fixing unit is provided in an empty space between a liquid crystal panel and a light guide plate of a backlight unit in order to support the liquid crystal panel together with a mold and to fix an optical sheet and such that the fixing unit is provided with a reflection member in order to improve luminance at a light-incident part of the light guide plate, whereby image quality is improved.

Abstract: Disclosed is a display device configured such that a fixing unit is provided in an empty space between a liquid crystal panel and a light guide plate of a backlight unit in order to support the liquid crystal panel together with a mold and to fix an optical sheet and such that the fixing unit is provided with a reflection member in order to improve luminance at a light-incident part of the light guide plate, whereby image quality is improved.

Abstract: A helmet cleaner includes a casing providing a sealed washing space and having a door to open or dose the washing space, a helmet support provided at a predetermined height in the washing space and supporting a helmet so that a convex surface of the helmet is directed upwards, a first nozzle part provided on a ceiling inside the washing space to jet water or compressed air to the convex surface of the helmet supported by the helmet support, a second nozzle part provided on a floor inside the washing space to jet water or compressed air to a concave surface of the helmet supported by the helmet support, a washing water supplying pump supplying water to the first and second nozzle parts, and an air pump supplying compressed air to the first and second nozzle parts.

Abstract: A highly pure oxide powder can be prepared by a simple process comprising hydrothermally reacting oxide precursors in the presence of a metal complex-forming ligand.