LED DISPLAY DEVICE

摘要

The invention relates to a LED display device. Primarily, it comprises a liquid crystal display, a shell, a plurality of lighting modules and two reflective layers. The present invention is a liquid crystal display device which uses the light emitting diode to combine with polymethylmethacrylate (PMMA) as a lighting module. The secondary lens theory composed of different refractive index between air and PMMA and the angle of the reflective layers on the inner surface of the side planes are used to effectively increase the refracted angle of light emitted from the light emitting diode and the distance of the mixed light and to effectively reach the advantages of thinner liquid crystal display and lower power consumption.

主权项

1. A LED display device, comprising:
a liquid crystal display comprising a color filter component, a thin film transistor substrate and a liquid crystal layer, wherein the liquid crystal layer disposing between the color filter component and the thin film transistor substrate; a shell correspondingly connecting to the liquid crystal display, the shell comprising a back plane corresponded to the liquid crystal display and two side planes separately connecting the back plane and the liquid crystal display, an optical traveling space is formed between the shell and the liquid crystal display; a plurality of lighting modules disposing in the back plane, every lighting module consisting of a light emitting diode, a first refracting portion covering the light emitting diode and a second refracting portion covering the first refracting portion, wherein the first refracting portion and the second refraction portion separately having the refractive index N1 and N2, and N2 is larger than N1; and two reflective layers separately disposing on the side planes for reflecting the light emitted from the lighting modules to the liquid crystal display.