PRISM SHEET INCLUDING A REFLECTIVE PATTERN AND A CONCENTRATION PATTERN WITH A LIGHT DIFFUSION FUNCTION, A BACKLIGHT UNIT ADOPTING THE SAME, AND A LIQUID CRYSTAL DISPLAY DEVICE INCLUDING THE BACKLIGHT UNIT, CAPABLE OF OBTAINING HIGH CONDENSATION EFFICIENCY

摘要

PURPOSE: A prism sheet, a backlight unit adopting the same, and a liquid crystal display device including the backlight unit are provided to obtain high front brightness by including the backlight unit and improve condensation efficiency and light diffusion efficiency by including a condensation pattern.;CONSTITUTION: A prism sheet includes a transparent substrate(110), a condensation pattern(130), and a reflection pattern(120). The condensation pattern is arranged on the transparent substrate. The condensation pattern includes a Fresnel lens(131) with a trapezoid cross section and a lenticular lens(132) with a partially circular cross section. The reflection pattern is arranged on the opposite side to a transparent substrate with the condensation pattern.;COPYRIGHT KIPO 2010