Patent ID: 7056005

Claim:
A light guiding plate disposed below a liquid crystal display panel, for allowing a light having an optical distribution of a planar light source to be supplied toward the liquid crystal display panel, said light guiding plate comprising: a light input face into which the light is inputted; a light reflection face that is adjacent to said light input face, said light 6 reflection face having at least one brightness enhancement recess; and a light output face facing said light reflection face, wherein said brightness enhancement recess is formed at said light reflection face of a body of the light guiding plate, the body of the light guiding plate including at least two side faces having said light input face, wherein said brightness enhancement recess reflects toward said light output face a light that is inputted through said light input face and is reflected by said side faces, to enhance brightness, and wherein said light reflection face comprises at least one brightness enhancement protrusion formed at a surface thereof, said brightness enhancement protrusion reflecting a light leaked through said light reflection face toward said light output face to reproduce the leaked light.