Patent ID: 8842238
Filing Date: 2014-09-23
Classification: G02B

Abstract:
1. A backlight unit comprising: light sources configured to emit light; and a light guide plate disposed parallel to the light sources and configured to convert spotted lights entered from the light sources into two-dimensional light, wherein the light guide plate includes a plurality of air barriers arranged at a fixed interval and configured to guide lights from the light sources in blocks with a width of the fixed interval, wherein the plurality of air barriers is formed in a slit shape, wherein the plurality of air barriers include a plurality of first air barriers and a plurality of second air barriers, wherein the plurality of first air barriers and the plurality of second air barriers are alternately disposed, wherein the light sources only correspond to the plurality of first air barriers, wherein the whole of upper regions of the light guide plate are connected to each other, and wherein the whole of lower regions of the light guide plate are connected to each other.