LIGHT GUIDE PLATE FOR EDGE LIGHT

摘要

PURPOSE:To obtain such a thin light guide plate that when this plate is used as a back light, uniform luminance in the light emitting plane is obtd. and increasing the number of light diffusing sheets is not necessary. CONSTITUTION:This light guide plate 1 consists of a light-transmitting material having a linear light source 4 adjacent to the edge on the side face. In the side face of the plate 4, a medium containing a light diffusing and reflecting material is partially applied in such a manner that the transmittance for parallel light beams of the coated part is >=40% and <70% measured according to JIS-K7105.