LIGHT GUIDE PLATE AND BACKLIGHT UNIT

摘要

PURPOSE: A light guide plate and a back light unit thereof are provided to improve brightness regularity without the brightness loss. CONSTITUTION: A light reception unit (11) is a surface receiving light from a light source (20). A bright unit (12) corresponds to a plurality of the light sources having a predetermined distance with a light guide plate (10). A dark unit (13) is the other area except for the bright unit of the light reception unit. The period of the light source is the distance of a center. The density of the pattern is a pattern period between the maximum point and the minimum point. Density change between the maximum point and the minimum point is successively diffused to the surroundings.