OPTICAL SHEET INCLUDING PRISM PATTERNS ON TOP AND BOTTOM SURFACES OF A BASE SHEET AND A BACKLIGHT UNIT INCLUDING THE SAME

摘要

PURPOSE: An optical sheet and a backlight unit including the same are provided to improve a brightness property, heat resistance, and shielding effectiveness.;CONSTITUTION: An optical sheet (100) includes a base sheet (102), a first pattern (104), and a second pattern. The base sheet includes a top surface facing a bottom surface. The first pattern is included in the bottom surface. The second pattern is included in the top surface. The second pattern is a second prism pattern (106) arranged in the same direction as the first pattern, a reticular pattern (108), or a micro lens pattern (110) having a different diameter from a pitch of the first pattern. An emboss pattern (10) is formed on the first pattern or the second pattern.;COPYRIGHT KIPO 2013