Patent ID: 9684116
Date: 2017-06-20
CPC Classifications: G02B

Claim:
1. A light guide plate comprising: a light output surface configured to output light to the outside; a reflective surface positioned opposite the light output surface; a light incident surface provided on at least one side surface of side surfaces which connect the light output surface and the reflective surface, and configured to receive light projected from a light source; and a reflection pattern including an embossed portion having a circular shape and configured to protrude to the outside of the reflective surface when viewed in a direction perpendicular to the reflective surface, and a concave portion having a ring shape which surrounds the embossed portion and recessed in the reflective surface when viewed in a direction perpendicular to the reflective surface, wherein the embossed portion protruding to the outside of a level of the reflective surface has an hemispherical shape which is rotational symmetric with respect to the center of the circle forming the embossed portion, and wherein the center of the circle of the embossed portion is provided to be different from the center of the ring shape of the concave portion.