This article will introduce you to the synthesis principle of LED three-color light. What is RGB LED? How is the synthetic light produced? Both RGB LED and white light LED actually hope to achieve the effect of white light, but one is directly presented with white light (phosphor), and the other is mixed with red, green and blue.
RGB light imaging principle: RGB light is formed by the intersection of three primary colors. In addition, there are blue light LED with yellow phosphor, and ultraviolet LED with RGB phosphor. Overall, both have their imaging principles, but the attenuation problem and the impact of ultraviolet light on the human body are both difficult to solve in the short term. Therefore, although both can meet the needs of white light, they have different results.
RGB is obviously more diverse than white light LED in application. He gave an example, such as car lights, traffic signs, windows, إلخ., when a certain band of light is needed, RGB color mixing can be arbitrary. In comparison, white light LED is more disadvantaged, so of course it is stronger in effect. On the other hand, if RGB LEDs are used in lighting, they will suffer a loss, because the use of RGB LEDs in lighting mainly depends on the luminous flux, lifespan and pure color of white light. At present, RGB LEDs are mainly used in decorative lighting.
Lin Zhuxuan, general manager of Meiguang Lighting, who has announced the abandonment of this production line after seeing that the white light LEDs using fluorescent powder have no future, specifically stated that it is not only the problem of light attenuation, but other problems are also a major reason. He clearly stated that white light LEDs are obviously inferior to RGB in clarity and color purity. He also said that when RGB is overlapped properly, the overall brightness and clarity are five times that of fluorescent white light LEDs. In addition, the problem of light attenuation and the high cost of wafers are also a major reason why he is optimistic about RGB lights.
People who like high-definition images should not find it difficult to find that the colors of some LED backlight panels are particularly clear and bright, even to the extent of high-definition TVs. This is the characteristic of RGB, which advocates the characteristics of red is red, green is green, and blue is blue. In terms of light color mixing, it has more diverse characteristics, just like a painter’s palette, which can be used at will, perfectly presenting the most realistic colorful world and decorating a beautiful life.
When RGB is separated and controlled separately, although it can be directly controlled and the color mixing is also good, it is a big problem to achieve a fairly pure mixed white light. Although the cost is expensive, the quality is relatively good. As for white light LED lamps, although the cost is cheap, it can directly replace CCFL and become the main technology of LED, but relatively speaking, due to the problem of wavelength frequency, they are packaged together, so the scattering will also be unstable.
The control issues of RGB lights still need to be improved. For example, if one of the lights is broken, it will be quite obvious on the entire screen. On the contrary, white LED lights can complement each other. Because they are side-effects, they can make up for a broken LED and make up for it evenly, so that the overall situation does not look too bad.