Method for designing a light guide plate and method for manufacturing the same

摘要

A method for designing a light guide plate includes the following steps. A raw light guide plate having a light input surface and a light output surface is provided. A region of the light input surface is divided into several annuluses according to a luminance distribution E(&rgr;,&thetas;) of the light output surface. A scattering dots density D(&rgr;,&thetas;) of each annulus on the light input surface is figured out. A total number N of the scattering dots of each annulus on the light input surface are gained, and the scattering dots is randomly distributed in the each annulus defined on the light input surface, whereby a designed light guide plate is obtained.