Direct type backlight module

Abstract

The invention provides a direct type backlight module which comprises a backplane, a plurality of backlight sources arranged in the backplane and a diffusion plate arranged above the backplane. The backplane comprises a baseplate, a side plate connected on the side edge of the baseplate and a plurality of installation units arranged on the baseplate, wherein each of the installation units is provided with a first inclined plane and a second inclined plane which is in the opposite inclined direction to the first inclined plane; the backlight sources are arranged on the first inclined plane and the second inclined plane respectively, so that the backlight sources are in inclined arrangement relative to the diffusion plate. According to the direct type backlight module, the installation unit provided with the first inclined plane and the second inclined plane is arranged on the baseplate of the backplane, and the backlight sources are arranged on the first inclined plane and the second inclined plane of the installation unit, so that the backlight sources are arranged in an inclined way relative to the diffusion plate so as to increase the mixed light distance and improve the illumination intensity and uniformity, and meanwhile, the number of LED (light-emitting diode) lights in use is reduced, the production cost is lowered; and moreover, the the backlight module can be thinned easily.

Description

technical field [0001] The invention relates to the field of liquid crystal displays, in particular to a direct-lit backlight module capable of enhancing light mixing. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The direction of the liquid crystal molecules is controlled by electrifying or not, and the light of the backlight module is refracted. Come out to generate the picture. Since the liquid crystal panel itself does not emit light, the light source prov...

AI Technical Summary

Problems solved by technology

[0004] However, the light emitting plane 202 of the LED light bar 200 is parallel to the light incident surface 402 of the diffuser plate 400, which makes the light mixing distance of the LED light bar 200 restricted by the thickness of the backlight module, and it is impossible to achieve a uniform surface light source and thinness at the same time.

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