Patent ID: 9201188
Filing Date: 2015-12-01
Classification: G02B,Y10T

Abstract:
1. A backlight unit comprising: light sources generating light; a light guide plate guiding light through an incidence surface opposite the light sources and emitting the light through an emission surface; a plurality of lower patterns arranged in a plurality of rows and a plurality of columns on a lower surface of the light guide plate which is opposite the emission surface, each of the plurality of lower patterns defining a prism shape including an inclined surface and a sub-inclined surface; and at least one optical sheet stacked on the emission surface, wherein either the each column of the lower patterns is tilted by a predetermined angle with respect to a vertical axis of the light guide plate which is perpendicular to the emission surface, or the each row of the lower patterns is tilted by a predetermined angle with respect to a horizontal axis of the light guide plate which is parallel to the emission surface.