Surface light source backlight module and liquid crystal display panel

Abstract

The invention provides a surface light source backlight module and a liquid crystal display panel. The surface light source backlight module includes a Mini LED substrate, several Mini LED chips arranged at intervals on the Mini LED substrate, and a fluorescent film covering the several Mini LED chips. There are several microstructures on the surface of each Mini LED chip, so that the several Mini LEDs can achieve a larger angle of light output, improve the light mixing uniformity of the surface light source backlight module, and achieve uniformity by saving optical films. The purpose of light mixing is to improve the penetration rate and brightness of the surface light source, and at the same time, it is beneficial to the thin design of the surface light source backlight module.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a surface light source backlight module and a liquid crystal display panel. Background technique [0002] With the development of display technology, liquid crystal display (Liquid Crystal Display, LCD) and other flat display devices are widely used in mobile phones, TVs, Various consumer electronic products such as personal digital assistants, digital cameras, notebook computers, and desktop computers have become the mainstream of display devices. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module (Backlight Module). The working principle of the liquid crystal display 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 ...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 and figure 2 As shown, there is a direct-type backlight module in the prior art, which adopts an array-type LED surface light source. The direct-type backlight module includes an LED substrate 100, an LED light-emitting chip 200, a fluorescent film 300, a diffusion sheet 400 and a brightness enhancement Diaphragm 500, because the LED light is close to the Lambertian distribution, the center brightness is higher, and the surrounding brightness is lower, so it is easy to produce uneven brightness during the lighting process of the direct-lit backlight module

At present, people often use diffusers to mix light or add scattering haze particles to the fluorescent film to mix light, but the addition of the film layer will reduce the penetration rate of the overall surface light source, affect the overall brightness of the surface light source, and the haze particles in the fluorescent film will also reduce Unable to achieve better light mixing effect

Images