Backlight module and display device

Abstract

The invention provides a backlight module. The backlight module comprises a back plate, a light source, a reflecting lens and a transflective membrane, wherein the light source is arranged at the surface of the back plate, the reflecting lens is arranged on the back plate and located at a light-exiting side of the light source, the reflecting lens comprises a light-entering surface and a light-exiting surface which are oppositely arranged, the light-entering surface is opposite to the light source, and the transflective membrane is arranged on the light-exiting surface of the reflecting lens and used for transmitting and reflecting a light entering onto the light-exiting surface. According to the backlight module, the transflective membrane is designed on the light-exiting surface of the reflecting lens, so that the light on the light-exiting surface can be reflected and refracted simultaneously, light energy is supplied to the portion above the light source, so that the structure of the light-exiting surface does not need to satisfy a total reflection condition, thereby reducing the total thickness of the reflecting lens, and reducing the light mixing height of the backlight module. The invention further provides a display device comprising the backlight module and a display panel, and the backlight module provides a light source for the display panel.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] Due to its high space utilization, low power consumption, no radiation, and low electromagnetic interference, liquid crystal displays have become the current mainstream display methods, and are widely used in tools for people and information communication such as TVs, mobile phones, and tablet computers. With the further expansion of the application field of liquid crystal displays, in order to achieve greater display details and improve display effects, the industry has proposed the concept of HDR (High-Dynamic Range, high-dynamic range images). After a large number of human factors experiments by researchers, It is confirmed that the multi-zone backlight can effectively improve the display effect of the display. In addition, in recent years, LCD (Liquid Crystal Display, liquid crystal display) displays hav...

AI Technical Summary

Problems solved by technology

However, due to the limitation of the height of the lens and the light output form of the LED with the traditional LED, the thickness of the backlight module is relatively large, and the light efficiency is low, which is not conducive to ultra-thin design.

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