LIGHT-GUIDING PANEL WITH IMPROVED LUMINANCE UNIFORMITY FOR LCD BACKLIGHT

摘要

A multi-layer structure light guide panel with the improved luminance uniformity for forming an LCD(Liquid Crystal Display) back light unit is provided to form reflective plates at the predetermined portions between the front, rear, left and right surfaces and the upper and lower layers of the light guide panel. A horizontal reflection plate(540) is stacked on the middle portion of the upper and lower plates(510,520). An intermediate plate(530) is formed at the remaining space except for the horizontal reflection plate in the middle portion of the upper and lower plates. The first side reflection plate(550) is formed at a side surface of the original light source(500) in the upper plate. The second side reflection plate(560) is formed at the other surfaces of the upper and lower plates and the surface of the intermediate plate corresponding to the other surfaces of the upper and lower plates.