| 摘要 |
The present invention relates to a prism sheet a back light unit and a display device including the same. The prism sheet includes: first and second base layers disposed in parallel; a plurality of first prism mountains formed on one surface of the first base layer, arrayed along a first axis direction, and extended in a second axis direction which is perpendicular to the first axis direction; a first opaque layer disposed on another surface of the first base layer; a plurality of second prism mountains formed on one surface of the second base layer, arrayed along the second axis direction, and extended in the first axis direction; and a second opaque layer disposed on another surface of the second base layer, wherein the first opaque layer includes a plurality of optical grooves scattering a light and the optical grooves are formed on a surface facing the second prism mountains on the first opaque layer. In addition, the second opaque layer includes a plurality of optical bumps scattering a light and the optical bumps are formed to protrude in a direction facing the second opaque layer in the second prism mountains. According to the present invention, image quality displayed on a display panel can be improved by preventing or minimizing an effect due to a light interference phenomenon occurring in the prism sheet by the first opaque layer including the optical grooves and the second opaque layer including the optical bumps. |
