Patent ID: 7832893

Claim:
A backlight assembly for a liquid crystal display device, comprising: a plurality of lamps extending along a direction and spaced apart from one another; a bottom cover accommodating the plurality of lamps; a reflection sheet below the plurality of lamps; a plurality of auxiliary optical elements having a long, bar-like shape, each arranged in parallel to cover at least one of the plurality of lamps extending along the direction to adjust a traveling path of light emitted from the at least one lamps, wherein each auxiliary optical element has an upper surface having a recession region corresponding to the at least one lamp at a center area and a round region at the remaining area; and a diffusion pattern directly on and corresponding to a surface of the recession region of the auxiliary optical element, wherein each of the auxiliary optical elements is spaced apart from one another, wherein light from the lamp is diffused toward a front direction by the auxiliary optical element, wherein the upper surface of the auxiliary optical element has wholly the same height and the recession region is formed of the groove correspond to the lamp, and wherein the recession region is lower than the height of the upper surface.