Backlight module

Abstract

A backlight module. The backlight module includes a diffuser plate, a first light guide plate, a second light guide plate, a plurality of first light sources, and a plurality of second light sources. The first light sources are disposed adjacent to the first light guide plate and emit light through the first guide plate to the diffuser plate. The second light sources are disposed adjacent to the second light guide plate and emit light through the second light guide plate to the diffuser.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module, which is suitable for a direct type liquid crystal display, and uses a light guide plate to mix light sources of different colors to shorten the light mixing distance. Background technique [0002] figure 1 It is a schematic top view showing a conventional direct-lit backlight module of a liquid crystal display. Among them, the light source of the existing direct-type backlight module uses red, green, and blue light-emitting diodes as the light source, and the red, green, and blue light emitted by the red, green, and blue light-emitting diodes are mixed. Produces white light. like figure 1 As shown, there are multiple light emitting diodes L between the outer frame 11 and the diffusion module 10 11 to L nm , where the LED L 11 , L 12 to L 1m placed on the first row, the LED L 21 , L 22 to L 2m placed on the second row, and the LED L n1 , L n2 to L nm placed ...

AI Technical Summary

Problems solved by technology

Therefore, the arrangement of light emitting diodes limits the length of the light mixing distance, and a longer light mixing distance increases the thickness and volume of the LCD backlight module

In addition, in the direct-lit backlight module, due to the light characteristics and the arrangement of the light-emitting diodes, the corners of the LCD panel are dark and other problems.

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