Direct type back light module

Abstract

A back light module of straight down type sets reflection structure at corner of back light module to improve dark zone at corner or edge of back light module for making integral brightness of back light module be uniform.

Description

technical field [0001] The invention relates to a light-emitting diode backlight module, in particular to a direct-lit backlight module for a liquid crystal display, which is suitable for avoiding dark bands at the corners or edges of the backlight module and making the brightness of the backlight module more uniform . Background technique [0002] Liquid crystal display (LCD) has largely replaced the traditional cathode ray tube (CRT) display due to its thinness and fine picture quality. The backlight module is a very important light-emitting structure in the liquid crystal display. By controlling the light source provided by the backlight module, coordinating with the liquid crystal in the liquid crystal panel, and properly controlling the switch components, the brightness and quality of the display screen of the liquid crystal display are determined. [0003] Due to the advantages of low power consumption, small size and high brightness, LEDs have replaced traditional fl...

AI Technical Summary

Problems solved by technology

[0008] However, since there is no light source at the corners or edges of the above-mentioned direct-lit backlight module structure, dark bands are likely to appear in the corners or edges or the light of the overall backlight module is not uniform enough.

If the corners or edges of the direct-type backlight module structure are provided with particularly dense light sources, the structural complexity and cost of the LED array will be significantly increased, and the desired light uniformity effect is not easy to control.

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