LIGHT GUIDE PLATE, BACKLIGHT UNIT AND MANUFACTURING METHOD OF LIGHT GUIDE PLATE

摘要

PROBLEM TO BE SOLVED: To provide a light guide plate which have minute reflect pattern and can be thin.SOLUTION: A light guide plate comprises a laser coloring layer developing by laser radiation and has reflect pattern formed to the laser coloring layer by the laser radiation. It is preferable that the laser coloring layer contains a synthetic resin of a matrix and a coloring agent dispersing in the synthetic resin. It is preferable that the reflect pattern is structured from multiple coloring units formed in hemispheric protruding into a ray emission direction. It is preferable that a synthetic resin layer layered over the laser coloring layer is provided. It is preferable that the synthetic resin layer has light reflectivity and is layered over a surface on an opposite side of a ray emission surface of the laser coloring layer.