LIGHT GUIDE PLATE HAVING DISCONTINUOUS PATTERNS ON CONCENTRICAL CIRCLES AND BACKLIGHT UNIT HAVING THE SAME

摘要

A light guiding plate is provided to secure excellent color reproducibility even with the small number of LEDs, by forming discontinuous patterns along concentric circles formed on a surface of the light guiding plate. A flat-shaped light guiding plate(100) includes an upper surface(106) and a lower surface facing each other, and lateral surfaces(108,112) formed between the upper surface and the lower surface. A plurality of patterns(104) are formed on the upper surface or the lower surface, wherein the patterns are disposed along plural concentric circles around a center of one edge or a center of a reference line parallel with the edge. The plural concentric circles are distanced from each other at the same interval. Respective patterns on each concentric circle are distanced from each other at a uniform interval. The farther the pattern is positioned from the center, the larger the size of the pattern is.