Light-emitting diode (LED) backlight module and electronic equipment

Abstract

The invention discloses a light-emitting diode (LED) backlight module and a television. The LED backlight module comprises a main reflecting piece, a first LED light source and a diffusion plate. A reflecting thin membrane is arranged on a first surface of the main reflecting piece. The main reflecting piece comprises an edge area and a central area. The edge area is an area where the distance between the edge area and the edges of the main reflecting piece is less than or equal to a first preset distance. The first LED light source is arranged in the edge area. The first LED light source is an LED light source with first power. A light emitting surface of the first LED light source is perpendicular to the main reflecting piece. Light rays emitted by the light emitting surface light on the central area of the main reflecting piece. The diffusion plate is arranged above the first LED light source, and is parallel to the main reflecting piece. The light rays emitted through the light emitting surface of the first LED light source form scattered light after being reflected by the main reflecting piece and being reflected and refracted by the diffusion plate and light out of the diffusion plate.

Description

technical field [0001] The invention relates to the technical field of backlight lighting, in particular to an LED backlight module and electronic equipment. Background technique [0002] With the development of electronic technology, more and more electronic devices have been produced, among which, many electronic devices have liquid crystal display screens. Usually, liquid crystal display screens include liquid crystal panels and backlight modules. The liquid crystal panels are composed of two layers A liquid crystal layer is sandwiched between glass substrates. Since the liquid crystal panel itself does not emit light, a uniform light source system needs to be provided for it through the backlight module. [0003] In the prior art, generally, the LED backlight module includes: a direct-type LED backlight module and an edge-type LED backlight module, wherein, such as Figure 1a and Figure 1b As shown, the direct type LED backlight module includes the following structure ...

AI Technical Summary

Problems solved by technology

With the continuous development of LEDs, their power is getting higher and higher. Under the same brightness requirements, the LED arrangement density becomes smaller, which leads to an increasing spacing P between LED lights. In order to keep the H / P ratio above When it is above a fixed value, the value of the light mixing distance H must be increased. In this way, if the light mixing distance H value becomes larger, the thickness of the direct-type LED backlight module will be larger

[0012] Since the light-emitting surface of the LED in the direct-lit LED backlight module in the prior art is parallel to the main reflector, that is, the light emitted by the LED light source will directly irradiate the diffuser plate, because the LED light source has a certain light-emitting angle , the irradiated area can only be a fixed area, which will lead to the technical problem that the area that the LED light source cannot irradiate will form light shadows

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