Patent ID: 7630025

Claim:
An anisotropic diffusion sheet provided between a light emitting light source portion and a display panel to illuminate the light incident from the light source portion to the display panel, which comprises: an isotropic diffusion layer for isotropic ally diffusing the light incident from the light source portion by internal light scattering; and a plurality of reflectors which has an interface interfacing with the upper surface of the isotropic diffusion layer and at least one pair of the inclined surfaces disposed inclinedly on the upper surface of the isotropic diffusion layer, is formed to protrude from the upper surface of the isotropic diffusion layer, and is disposed at an interval on the upper surface of the isotropic diffusion layer, so as to reflect the light isotropically diffused by the isotropic diffusion layer to the display panel, wherein the light, emitted from the light source portion and then becomes incident to the isotropic diffusion layer, is isotropically diffused through the isotropic diffusion layer, the light isotropically illuminated by the isotropic diffusion layer is then reflected by the plurality of reflector to be anisotropically diffused, and this anisotropically diffused light becomes incident to the liquid crystal display panel.