Abstract: A liquid crystal display (LCD) device includes: an LC panel; a lamp disposed below the LC panel, for supplying light to the LC panel; a lamp housing having an opening, for encompassing and protecting the lamp; first and second diffusion reflection sheets disposed on end portions of inner lower and upper surfaces of the lamp housing, respectively; and a light guide plate disposed to be adjacent to the opening of the lamp housing, for guiding light emitted from the lamp to the LC panel.

Abstract: A liquid crystal display (LCD) device includes: a liquid crystal panel; a plurality of lamps disposed under the liquid crystal panel, supplying light to the liquid crystal panel; a diffusion plate disposed above the lamps and diffusing light emitted from the lamps; a diffusion sheet disposed on the diffusion plate and including a plurality of reflection patterns formed on a region of a rear surface adjacent to the lamps and including reflection beads reflecting a portion of light from the diffusion plate, wherein the respective reflection patterns of the diffusion sheet are formed to extend in a direction parallel to a lengthwise direction of the lamps.

Abstract: A backlight unit for slimmed structure and exhibiting uniform brightness through the improvement of its luminance efficiency and the quality in appearance of which is improved by the removal of bright lines, and a liquid crystal display device having the same are disclosed. The backlight unit includes a plurality of light emitting lamps disposed above a cover bottom such that the light emitting lamps are arranged at regular intervals, a diffusion plate disposed above the light emitting lamps, the diffusion plate including a substrate, a light control part formed on the bottom surface of the substrate corresponding to the light emitting lamps, and lens parts mounted on the top surface of the substrate, and an optical film disposed above the diffusion plate.

Abstract: A multifunctional optical sheet for a liquid crystal display device includes a substrate diffusing incident light; a light-concentrating layer on the substrate and including a plurality of patterns that arranged to form alternating peaks and valleys; and reflection patterns between the substrate and the light-concentrating layer corresponding to the valleys of the light concentrating layer.

Abstract: A liquid crystal display (LCD) device includes: an LC panel; a lamp disposed below the LC panel, for supplying light to the LC panel; a lamp housing having an opening, for encompassing and protecting the lamp; first and second diffusion reflection sheets disposed on end portions of inner lower and upper surfaces of the lamp housing, respectively; and a light guide plate disposed to be adjacent to the opening of the lamp housing, for guiding light emitted from the lamp to the LC panel.

Abstract: A liquid crystal display (LCD) device includes: a liquid crystal panel; a plurality of lamps disposed under the liquid crystal panel, supplying light to the liquid crystal panel; a diffusion plate disposed above the lamps and diffusing light emitted from the lamps; a diffusion sheet disposed on the diffusion plate and including a plurality of reflection patterns formed on a region of a rear surface adjacent to the lamps and including reflection beads reflecting a portion of light from the diffusion plate, wherein the respective reflection patterns of the diffusion sheet are formed to extend in a direction parallel to a lengthwise direction of the lamps.

Abstract: A multifunctional optical sheet for a liquid crystal display device includes a substrate diffusing incident light; a light-concentrating layer on the substrate and including a plurality of patterns that arranged to form alternating peaks and valleys; and reflection patterns between the substrate and the light-concentrating layer corresponding to the valleys of the light concentrating layer.

Abstract: A backlight unit for slimmed structure and exhibiting uniform brightness through the improvement of its luminance efficiency and the quality in appearance of which is improved by the removal of bright lines, and a liquid crystal display device having the same are disclosed. The backlight unit includes a plurality of light emitting lamps disposed above a cover bottom such that the light emitting lamps are arranged at regular intervals, a diffusion plate disposed above the light emitting lamps, the diffusion plate including a substrate, a light control part formed on the bottom surface of the substrate corresponding to the light emitting lamps, and lens parts mounted on the top surface of the substrate, and an optical film disposed above the diffusion plate.