LIGHT GUIDE PLATE, METHOD OF MANUFACTURING THE SAME, BACK LIGHT, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

A light guide plate, a method of manufacturing the light guide plate, a back light, and a liquid crystal display device. The light guide plate (210) easily manufacturable at low cost is formed by combining a first small compartment (211) with a second small compartment (212) formed in a plate-like right-angled triangular shape in side view. The first small compartment (211) is formed of a transparent material. The second small compartment (212) is formed by adding scattered particles to a transparent material, and formed integrally with the first small compartment (211). A light source (220) faces the surface of the light guide plate (210) to which only the first small compartment (211) is exposed. A light coming from the light source (220) advances from the first small compartment (211) to the second small compartment (212), is scattered by the scattered particles, and then is discharged from a discharge surface (an upper surface in Fig. 2).