Patent ID: 7440045

Claim:
A flat panel display, comprising: a backlight module; a liquid crystal display panel disposed on the backlight module; and a brightness enhancement diffuser plate disposed between the backlight module and the liquid crystal display panel, including a first and a second diffuser layers embedded to each other, wherein the first diffuser layer is positioned between the liquid crystal display panel and the second diffuser layer, the second diffuser layer is positioned between the first diffuser layer and the backlight module, and the first and the second diffuser layers have different refractive indexes, different transmittances and different haze values, the refractive index of the first diffuser layer is larger than that of the second diffuser layer, the haze value of the first diffuser layer is larger than that of the second diffuser layer, wherein the first diffuser layer includes a first recess and a first protrusion, the second diffuser layer includes a second recess and a second protrusion, the first recess is embedded to the second protrusion and the second recess is embedded to the first protrusion, thereby forming an embedding interface between the first diffuser layer and the second diffuser layer, the embedding interface is a fractal curve surface.