Light guide plate and backlight module

Abstract

The invention discloses a light guide plate and a backlight module. The light guide plate includes a plate body, a prism assembly and at least one optical microstructure; the prism assembly is arranged on at least one surface of the plate body; the at least one optical microstructure is arranged on the upper edge of the prism assembly, and the optical microstructure It includes a first light guide unit and at least two second light guide units; the two slopes of the first light guide unit form a first included angle, and the first included angle is substantially between 45 degrees and 60 degrees; the At least two second light guide units are symmetrically arranged on opposite sides of the first light guide unit, an inclined surface and a bottom surface of each second light guide unit form a second included angle, and the second included angle is substantially between 10 degrees to 60 degrees. The invention has the advantages of increasing brightness, covering defects and improving optical phenomena such as bright lines.

Description

technical field [0001] The invention provides a light guide plate and a backlight module, especially a light guide plate with an optical microstructure and a backlight module, so as to improve the brightness and uniformity of light output. Background technique [0002] At present, the main function of the commonly used light guide plate is to guide the point light source into a surface light source. The light emitting unit is arranged on the light incident side of the light guide plate. After the light enters the light guide plate, it will pass through the light guide plate from the light exit surface to form a surface light source. In order to make the light output of the surface light source more uniform and soft, an optical microstructure is usually arranged on the lower surface of the light guide plate, or inside the light guide plate, or on the upper surface of the light guide plate, or on the light incident side of the light guide plate to destroy the light guide plate...

AI Technical Summary

Problems solved by technology

Traditional optical microstructures include hemispherical structures, V-shaped structures and R-shaped structures, but these traditional optical microstructures have disadvantages such as uneven light output, low brightness, and edge light leakage.

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