LED backlight device and display equipment

Abstract

The invention discloses a backlight device of an area light source and display equipment. The LED backlight device comprises a substrate provided with an open pore structure, LED light sources arranged on the lower surface of the substrate, a reflective condensation structure arranged below the substrate and used for reflecting the light emitted by the LED light sources to one side of the light emitting surface of the LED backlight device, and an optical film group arranged above the substrate. The open pore structure is arranged corresponding to the reflective condensation structure. The invention provides the backlight device capable of improving the brightness of an axial viewing angle, and the utilization efficiency of light is improved.

Description

technical field [0001] The invention relates to a display device, in particular to an LED backlight device and a display device. Background technique [0002] With the rapid development of display technology, people's demand for displays is getting higher and higher, especially for non-planar display devices such as flexible liquid crystal displays, curved liquid crystal displays, flexible liquid crystal displays and foldable liquid crystal displays. Flexible LCD panels are about to become the mainstream in the display field due to their thinness, bendability, and impact resistance. However, the liquid crystal display device is a non-self-luminous display device, which needs to be matched with a backlight to realize display, which greatly increases the difficulty of flexible display. How to realize flexible backlighting has always been a difficult problem to solve. [0003] The direct-type backlight module is directly arranged behind the liquid crystal display panel, which...

AI Technical Summary

Problems solved by technology

Different from the light guide plate backlight system of side-lit backlight, the direct backlight module using Mini-LED generally returns light by coating white reflective ink (that is, white oil) on the driving substrate. Due to the reflective characteristics of white oil The reflected light and the incident light usually have the same angle, either after reflection, re-enter the brightness enhancement film and be fully reflected back again, or be reflected to the low reflection area of ​​the driving substrate (such as the space between the surface of the Mini-LED and the white oil area) is lost, resulting in a large loss in the overall light return efficiency, and the light output efficiency is not high

These flexible Mini-LED backlight technologies are difficult to implement. On the one hand, they are out of touch with the traditional backlight technology. On the other hand, the manufacturing cost is high and the yield rate is low.

Images