What is RGBW LED Lighting?

Both white LEDs and RGB LEDs share the same goal, and both hope to achieve the effect of white light, except that one is directly presented in white light, and the other is a mixture of red, green and blue colors. RGB lights are based on three primary colors. In addition, there are also blue LEDs with yellow phosphors, and ultraviolet LEDs with RGB phosphors. Overall, these two have their imaging principles. The color of some LED backlight boards is particularly clear and vivid, even to the extent of high-definition televisions. This situation is the characteristics of RGB. The characteristics of red are red, green is green, and blue is blue. In color mixing, it has more meta characteristics.

RGBW LED Lighting

The attenuation of RGB and the effect of ultraviolet on the human body are both more difficult to solve in the short term. Although both can meet the needs of white light, they have different results. RGB is obviously better than white light in applicationGenerally referred to as the external quantum efficiency of the component, it is the product of the internal quantum efficiency of the component and the extraction efficiency of the component. The so-called internal quantum efficiency of a component is actually the electro-optical conversion efficiency of the component itself, which is mainly related to the characteristics of the component (such as the energy band, defects, and impurities of the component material), the barrier crystal composition and structure of the component. The take-out efficiency of a component refers to the number of photons that can actually be measured outside the component after the components themselves absorb, refract, and reflect. Therefore, the factors concerning the extraction efficiency include the absorption of the component material itself, the geometric structure of the component, the refractive index difference between the component and the packaging material, and the scattering characteristics of the component structure. The product of the internal quantum efficiency of the component and the removal efficiency of the component is the luminous effect of the entire component, that is, the external quantum efficiency of the component. The early component development focused on improving its internal quantum efficiency. The main method is to improve the quality of the barrier crystal and change the structure of the barrier crystal, so that it is not easy to convert electrical energy into thermal energy, and then indirectly improve the luminous efficiency of the LED, so that the theory of about 70% Internal quantum efficiency, but such internal quantum efficiency is almost close to the theoretical limit. In such a situation, it is impossible to increase the total light amount of the module by increasing the internal quantum efficiency of the module alone, so improving the extraction efficiency of the module has become an important research topic. The current methods are mainly: the change of grain shape-TIP structure, surface roughening technology.