Light guide plate, method of manufacturing same, and backlight module having same

摘要

A light guide plate includes a main body including a light emitting surface. A number of glues, each with a different, and lower, refractive index when cured, are applied through a covering plate onto the light emitting surface. Each type of glue forms a layer on the layer below, the stack of layers forms a plurality of spaced micro-rods on the light emitting surface. Each layer in the micro-rod thus includes top and bottom and side surfaces. The different refraction indexes of each layer, reducing along a direction from the light emitting surface to the top surface of each rod, causes light to be emitted substantially equally from the periphery of each layer in the micro-rod as well as from the top of each rod. The maximum refraction index of any layer in the micro-rod is not greater than that of the main body.

主权项

1. A light guide plate comprising:
a main body comprising a light emitting surface; and a plurality of spaced micro-rods on the light emitting surface, each of the micro-rods comprising a top surface on its distal end and a side surface connecting the top surface to the light emitting surface, and comprising a number of layers arranged in an order from the light emitting surface to the top surface, a refraction index of each layer being smaller than a refraction index of previous layer along the direction from the light emitting surface to the top surface, a maximum refraction index of each of the micro-rods being not greater than a refraction index of the main body, each of the micro-rods comprising the first layer, a second layer, a third layer, and a fourth layer.