LIGHT GUIDE PLATE AND BLACKLIGHT ASSEMBLY USING THE SAME

摘要

A light-guiding plate and a backlight assembly using the same are provided to improve the light uniformity and the viewing angle characteristic by using a prism pattern having a trapezoidal column shape. A light-guiding plate(100) comprises a body(110), a first prism pattern(122), a second prism pattern(124), and a third prism pattern(130). The first and second prism patterns are disposed on a light emission surface(112) so as to uniformize an emission distribution of the light, which is incident through a light incident surface. The first and second prism patterns are arranged symmetrically to each other with respect to the center of a length of the light incident surface. The first prism pattern includes a plurality of first protrusions(126a), and the second prism pattern includes a plurality of second protrusions(126b). The first protrusions and the second protrusions have trapezoidal column shapes, which are extended in a first direction perpendicular to the light incident surface. The third prism pattern is disposed on a light reflection surface(114) so as to improve the brightness of the light incident through the light incident surface. The third prism pattern includes a plurality of third protrusions. Each of the third protrusions has a triangular column shape, which is extended in a second direction parallel with the light incident surface.