Backlight module and display device

Abstract

The invention provides a reflection layer. The reflection layer comprises a plurality of groups of first dielectric films and a plurality of groups of second dielectric films, wherein the dielectric films and the second dielectric films are stacked alternatively; the refractive indexes of the first dielectric films are greater than those of the second dielectric films. The invention also provides a backlight module, comprising a light guide plate, a light source and a reflection layer. According to the backlight module provided by the invention, the light guide plate is made of glass so as to have relatively high hardness, the whole backlight module does not need to be supported by an additional backing plate, so that backlight energy consumption is saved, and the thinning demand can be met; furthermore, a reflector plate is formed by stacking multiple layers of dielectric films with different refractive indexes, so that the reflectivity is greatly promoted, the light emission efficiency of the backlight module is improved, and the reliability and the scraping resistance of the backlight module are improved; meanwhile, as the reflectivity of the reflection layer is very high, the back surface of the backlight module can be used as a mirror, so that the purpose of one screen with multiple functions can be achieved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display. Background technique [0002] The backlight module is one of the key components of the liquid crystal display. Since the liquid crystal itself does not emit light, the function of the backlight module is to supply sufficient brightness and evenly distributed light source so that it can display images normally. At present, two commonly used backlight modules are direct-type backlight modules and edge-type backlight modules. The essential difference between the two types of backlight modules lies in the position of the light source. Below, while the light source in the edge-lit backlight module is located on the side of the backlight panel. Since the light source in the direct-type backlight module is located below the display panel, the light source will increase the overall thickness of the display. Therefore, in order to meet the demand for th...

AI Technical Summary

Problems solved by technology

The light guide plate of the traditional backlight module uses polymethyl methacrylate material (PMMA) or polyacrylate organic-inorganic nanocomposite material (MS). The light guide plate made of these materials has low hardness, so a metal back plate is required To support the entire backlight module, it not only increases the consumables of the entire LCD display, but also increases the thickness of the entire LCD display, which does not meet the needs of thinning

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