Light guide plate and backlight module having V-cut structure

摘要

A light guide plate having a V-cut structure and a backlight module are disclosed. The light guide plate comprises straight-striped V-cut structure sets and a base plate having a light-entering side. The straight-striped V-cut structure sets are formed on a surface of the base plate adjacent to the light-entering side, wherein each straight-striped V-cut structure set is composed of at least one V-cut element, each V-cut element having a first base angle and a second base angle formed between its respective two inclined surfaces and a horizontal surface of the base plate. The first base angle is located closer to the light-entering side than the second base angle is, and is smaller than or equal to the second base angle. The straight-striped V-cut structure sets have a plurality of second average angle values which are gradually decreased from the light-entering side to a central position of the base plate.

主权项

1. A light guide plate having a V-cut structure, comprising:
a base plate having a first side and a second side opposite to the first side, wherein the first side is a first light-entering side; and a plurality of straight-striped V-cut structure sets directly formed on a surface of the base plate adjacent to the first side, wherein each of the straight-striped V-cut structure sets is composed of at least one V-cut element; each of the at least one V-cut element having a first base angle and a second base angle formed between its respective two inclined surfaces and a horizontal surface of the base plate, wherein the first base angle is located closer to the first side than the second base angle is, and the first base angle is smaller than or equal to the second base angle; and each of the straight-striped V-cut structure sets having a first average angle value and a second average angle value, wherein the first average angle value is an averaged value of the at least one first base angle in the each of the straight-striped V-cut structure sets, and the second average angle value is an averaged value of the at least one second base angle in the each of the straight-striped V-cut structure sets, and the second average angle values of the straight-striped V-cut structure sets are gradually decreased from the first side to a central position of the base plate, wherein when the first side is the only one light-entering side of the light guide plate, the first average angle values of the straight-striped V-cut structure sets are the same, and the second average angle values of the straight-striped V-cut structure sets are gradually decreased from the central position to the second side.