Prism sheet of liquid crystal display and back light unit using the same

摘要

A prism sheet of a liquid crystal display (LCD) includes a body part made of a transparent resin material; and a plurality of intaglio-type optical unit structures arranged on the body part, each of the optical unit structures having an intaglio-type or a relief type polyhedron inside of a rectangular structure thereof, a center of the intaglio portion forming a line, not a dot.