Light guide plate and method for machining same

Abstract

The invention discloses a light guide plate and a method for machining the same. The light guide plate comprises an incident side surface, an upper surface, a lower surface, first microstructure patterns and second microstructure patterns. The upper surface is connected with the incident side surface. The lower surface is connected with the incident side surface and is opposite to the upper surface. The first microstructure patterns are arranged on the upper surface and are arranged along a first direction, the light extraction capacity of the first microstructure patterns is linearly progressively increased from the positions adjacent to the incident side surface to the positions far away from the incident side surface, the second microstructure patterns are arranged on the lower surface and are arranged along a second direction, an included angle between the first direction and the second direction ranges from 10 degrees to 50 degrees, and the light extraction capacity of the second microstructure patterns is linearly progressively increased from the positions adjacent to the incident side surface to the positions far away from the incident side surface. The light guide plate and the method have the advantages that the microstructure patterns on the double surfaces of the light guide plate are not distributed in identical directions and do not correspond to light sources over identical distances, and accordingly light ray interference due to the fact that microstructure patterns are regularly arranged on double surfaces of an existing light guide plate when the microstructure patterns of the existing light guide plate correspond to light sources over identical distances can be reduced.

Description

technical field [0001] The invention relates to a part of a backlight module, in particular to a light guide plate and a processing method thereof. Background technique [0002] The surface of the light guide plate is provided with a microstructure pattern (pattern) to destroy the total reflection of the light inside the plate, and then emit light. According to the different distances from the light source, each area of ​​the light guide plate requires different light-taking capabilities, and the density of microstructure patterns in each area is also different. This kind of microstructure pattern with different densities in each region involves many different processing methods and distribution methods. [0003] In order to increase the light emitting ability of the light guide plate, in the current light guide plate processing technology, not only the microstructure pattern is arranged on the light emitting surface of the light guide plate, but also the microstructure pat...

AI Technical Summary

Problems solved by technology

However, in fact, when the microstructure patterns are laid out in the same way on both sides of the light guide plate, the arrangement of the microstructures is more regular, which is prone to interference.

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