OPTICAL SHEET, A BACKLIGHT UNIT AND A LIQUID CRYSTAL DISPLAY DEVICE USING THE SAME, CAPABLE OF IMPROVING COLLECTION EFFICIENCY AND LUMINANCE

摘要

PURPOSE: An optical sheet, a backlight unit and a liquid crystal display device using the same are provided to improve collection efficiency luminance, a contrast ratio, and a visual property by including a plurality of lens pattern which are formed in the base member and a plurality of prism patterns which is formed in the space between the lenses.;CONSTITUTION: An optical sheet(100) comprises a base member(110), a lens pattern(120), and a prism pattern(130). The lens pattern is formed in the base member. The prism pattern is formed on the base member having lens pattern. At least one prism pattern is formed in the space between lens patterns.;COPYRIGHT KIPO 2011