Light guide plate

Abstract

The invention provides a light guide plate which comprises a light incident surface, a light emitting surface connected with the light incident surface, and a bottom surface opposite to the light emitting surface, wherein a plurality of first microstructures and second microstructures are arranged on the light incident surface, and the first microstructures are positioned on outer sides of the second microstructures, so that light from the light source penetrates through the first microstructures and the second microstructures and then enters the light guide plate. According to the invention, as the light incident surface of the light guide plate is provided with first microstructures and second microstructures, and light from the light source penetrates through the first microstructures and the second microstructures and then enters the light guide plate, through refraction of the first microstructures 11 and the second microstructures 13, the divergence angle of the LED light source is increased, and energy of the LED light source can be uniformly spread out, so that the Hot Spot phenomenon can be effectively avoided.

Description

technical field [0001] The invention relates to a bracket, in particular to a light guide plate with a microstructure on the light incident surface. Background technique [0002] Liquid crystal display devices have the advantages of lightness, thinness, and low power consumption, and are widely used in modern information equipment. Since the liquid crystal itself in the liquid crystal display panel does not have light-emitting characteristics, in order to achieve the display effect, it is necessary to provide a surface light source device for the liquid crystal display panel, such as a backlight module. light source. For the LED light source, since the LED has a limited divergence angle and the energy at the light exit is relatively large, when the light guide plate is lit by the LED, there will be obvious bright and dark phenomena at the light entrance of the light guide plate, that is It is commonly known as Hot Spot, so when the light guide plate is covered with glass, ...

AI Technical Summary

Problems solved by technology

For the LED light source, since the LED has a limited divergence angle and the energy at the light exit is relatively large, when the light guide plate is lit by the LED, there will be obvious bright and dark phenomena at the light entrance of the light guide plate, that is Commonly known as Hot Spot, so when the light guide plate is covered with glass, it will cause poor quality at the place where the LED enters the light

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