Light guide plate and backlight module with same

Abstract

The invention relates to a light guide plate and a backlight module with the light guide plate. The light guide plate comprises an incidence surface, a reflecting surface and a projecting surface, wherein light emitted by a light source is irradiated in the light guide plate through the incidence surface; mesh points are distributed on the reflecting surface and provided with an optical reflecting surface and an optical correction surface; the optical reflecting surface is used for reflecting a light ray entering the light guide plate, and the optical correction surface is used for projectingthe light ray reflected by the optical reflecting surface after correcting the light ray; and the light ray reflected by the optical correction surface is projected out of the light guide plate through the projecting surface. The invention also relates to the backlight module with the light guide plate. The backlight module can generate more ideal spotlight effect and achieves higher front brightness.

Description

technical field [0001] The invention relates to a light guide plate and a backlight module with the light guide plate, in particular to a light guide plate used in a liquid crystal display device and a backlight module with the light guide plate. Background technique [0002] Liquid Crystal Display (LCD for short) is more and more widely used, but since the liquid crystal itself does not emit light, in order to achieve the display effect, it must be provided with a uniform surface light source, that is, a backlight source. The backlight module is an optical component that provides the backlight in the liquid crystal display, and is a very important part of the liquid crystal display module. Most of the small and medium-sized backlights use side-lit backlights. The light guide plate is the main device that converts light sources such as light emitting diodes (Light Emitting Diode, referred to as LED) and cold cathode fluorescent lamps (Cold Cathode Fluorescent Lamp, referred...

AI Technical Summary

Problems solved by technology

like Figure 2A and Figure 2B As shown, it is an optical schematic diagram of dots whose included angles are 25 degrees and 45 degrees between the reflective surface 13 and the optical reflective surface 141. Most of the light 16 emitted from the outgoing surface 15 of the light guide plate 11 is located in the middle and rear position, while The direction that is not perpendicular to the light guide plate 11 cannot produce the most ideal light-gathering effect, thus failing to achieve higher frontal luminance

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