Patent ID: 8896786
Filing Date: 2014-11-25
Classification: G02B,G02F

Abstract:
1. A liquid crystal display device comprising: a liquid crystal panel, a backlight assembly comprising an optical plate, and a plurality of light-emitting diode (LED) light sources, wherein the optical plate has a first surface substantially parallel to a bottom surface of the liquid crystal panel, and wherein the optical plate includes a height-varying portion formed on a second surface opposite the first surface and extending fully in a first direction between a first lateral surface and a second lateral surface of the optical plate, and a triangular prism pattern formed along the height-varying portion and extending in the first direction, wherein the plurality of LED light sources are arranged at a predetermined pitch in a second direction perpendicular to the first direction and facing a disposed directly on the first lateral surface of the optical plate, wherein at least one of the plurality of LED light sources is disposed facing thinner portions of the height-varying portion, and wherein the predetermined pitch corresponds to a distance measured between adjacent thinner portions of the height-varying portion.