Patent ID: 9684113
Date: 2017-06-20
CPC Classifications: G02B

Claim:
1. A light guide plate, comprising: a light output surface configured to output light toward the outside; a reflective surface positioned at the opposite side of the light output surface; a light incident surface provided on at least one side surface among the side surfaces connecting the light output surface to the reflective surface to receive light irradiated from a light source; and a reflective pattern having a quadrilateral shape when viewed in a direction perpendicular to the reflective surface, and having a concave portion recessed toward an inner portion of the reflective surface and an embossed portion protruding from an edge of the concave portion toward an outer portion of the reflective surface, wherein the concave portion includes a first inclined surface inclined from the reflective surface toward the light output surface; and a second inclined surface inclined from the first inclined surface toward the reflective surface, wherein the embossed portion comprises a first protruding region formed at an edge in which the first inclined surface comes in contact with the reflective surface; and a second protruding region formed at an edge in which the second inclined surface comes in contact with the reflective surface, wherein the inclined angle of the first inclined surface is different from that of the second inclined surface in the concave portion, and wherein a region protruding from an edge of a gently inclined surface has greater size and protruding height compared with a region protruding from an edge of a steeply inclined surface.