HYBRID OPTICAL PLATE AND BACK LIGHT UNIT HAVING THE SAME

摘要

A hybrid type optical plate and a backlight unit having the same are provided to offer a light condensing function and a light diffusion function through one sheet of optical plate. A first material layer(31a) has a predetermined refraction rate. The lower surface of the first material layer is flat and a prism pattern member(31a-1) is formed on the upper surface of the first material layer. A second material layer(31b) is integrally coated on the upper surface of the first material layer. The upper surface of the second material layer is flat. A diffusion beads layer(31c) is formed selectively on the lower surface of the first material layer and the upper surface of the second material layer. The lower surface of the first material layer and the upper surface of the second material layer are treated by glazing. A reverse prism pattern member(31a-2) is formed at the lower surface of the first material layer selectively.