Light-guide Apparatus With Micro-structure, Back Light Unit Comprising The Same And Liquid Crystal Display Comprising The Same

Abstract

A uniform reflective light-guide for accompanying an edge light source to form a backlight module for an LCD display includes a light-guiding layer and a reflective layer. The light-guiding layer further defines a light-introducing surface and a light-exiting surface. The light-introducing surface is to allow lights emitted from the edge light source to enter the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights to leave the light-guiding layer. The reflective layer is to reflect the incident lights back to the light-guiding layer. The reflective layer and the light-guiding layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air spacing in between. A reflective surface is defined to interface the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface.

Description

technical field [0001] The invention relates to the technical field of light guide devices, in particular to a light guide device, a backlight module and a liquid crystal display with the light guide device. Background technique [0002] The Light Guide Plate is the light guiding medium in the backlight module of the display. At present, most backlight modules are edge-type (Edge Type), and the light guide plate is used to guide the lateral light so that it is emitted from the front of the display. , thereby improving the luminance of the panel and controlling the uniformity of brightness. [0003] The working principle of the light guide plate is to reflect the light after entering the light guide plate, and transmit the light to the other end of the light guide plate. In particular, the specific structure on one side of the light guide plate can be used to produce diffusion phenomena at various angles, and the reflected light can be guided to the other end of the light gui...

AI Technical Summary

Problems solved by technology

[0011] As mentioned above, in the prior art, due to the air layer between the light guide plate and the plate, the light loss will be increased, resulting in higher cost of the backlight module, and obvious bright line phenomenon. The processing of the prism module is not easy and the microstructure is easily damaged. , so there is room for further improvement

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