Patent ID: 7443462
Filing Date: 2008-10-28
Classification: G02B

Abstract:
1. A light guide plate structure comprising: a light guide plate, comprising at least one light incident surface, a light scattering surface and a light emitting surface, wherein the light incident surface is on a sidewall of the light guide plate, the light scattering surface is on a bottom surface of the light guide plate, and the light emitting surface is on a top surface of the light guide plate, and wherein the light scattering surface has a plurality of notches extending up from underneath the bottom surface of the light guide plate; and a plurality of transparent element structures associated with the plurality of notches and having solid side walls continuously extending between first and second surfaces so that the first surfaces are within the plurality of notches and the second surfaces are outside the bottom surface of the light guide plate, wherein a refractive index of the plurality of transparent element structures is different from that of the light guide plate.