Light guide plate and backlight module

Abstract

Provided is a light guide plate, which is provided with a light incident surface, a bottom surface, a light emergent surface, a plurality of first microstructures and a plurality of second microstructures. The bottom surface is opposite to the light emergent surface, the light incident surface is connected between the bottom surface and the light emergent surface, and the plurality of first microstructures protrude out of the bottom surface, are arranged at intervals along the direction parallel to the light incident surface, and respectively extend from the light incident surface side to a predetermined direction far away from the light incident surface. The plurality of second microstructures are arranged between the plurality of adjacent first microstructures. Each second microstructurecomprises a plurality of dimming blocks which protrude out of the bottom surface and are arranged in the preset direction. Each first microstructure protrudes out of the bottom surface by a first height, each dimming block protrudes out of the bottom surface by a second height, and the second height is smaller than the first height. The invention further provides a backlight module comprising thelight guide plate. The light guide plate has the functions of reducing the horizontal view angle and maintaining the brightness, and the backlight module also has the function of scratch resistance.

Description

technical field [0001] The invention relates to a light guide element, in particular to a light guide plate and a backlight module using the light guide plate. Background technique [0002] Nowadays, liquid crystal displays have been widely used in various electronic devices that require display. The liquid crystal display includes a liquid crystal display panel and a backlight module. Since the liquid crystal display panel itself does not emit light, the backlight module needs to provide backlight to the liquid crystal display panel for displaying images. Therefore, the quality of the backlight provided by the backlight module will also affect the image quality. [0003] The types of backlight modules include direct-type backlight modules and side-type backlight modules. The side-type backlight modules are widely used in thin electronic devices due to their advantages of thinner thickness. The side-lit backlight module includes a light source and a light guide plate. The...

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Problems solved by technology

Therefore, the quality of the backlight provided by the backlight module will also affect the image quality

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