RGB LED lights are made of red, green and blue mixed light. In addition, there are blue LED with yellow fluorescent powder and ultraviolet LED with RGB fluorescent powder. The colors of some LED backlight panels are particularly clear and bright, even to the extent of high-definition TV. This situation is the characteristic of RGB, which flaunts that red is red, green is green, and blue is blue, and it has more characteristics in color mixing of light.

RGB is designed according to the principle of color luminescence. Generally speaking, its color mixing method is like red, green and blue Three Lamps District. When their lights overlap each other, the colors are mixed, but the brightness is equal to the sum of the two brightness. The more mixed, the higher the brightness, that is, additive mixing.

For the superposition of red, green and blue Three Lamps District, the bright superposition area in the center is white, and the characteristics of additive mixing are: the brighter the superposition.

The three color channels of red, green and blue are divided into 256 levels of brightness for each color. At 0, the "light" is weak-it is turned off, and at 255, the "light" is on. When the three-color gray values are the same, gray tones with different gray values are generated, that is, when the three-color gray values are all 0, it is a dark black tone; When the gray levels of all three colors are 255, they are bright white tones.

RGB color is called additive color because you can produce white by adding R, G and B together (that is, all light is reflected back to the eyes). Coloring is used for illuminating light, television and computer displays. For example, displays emit light through red, green and blue phosphors to produce colors. Most visible spectra can be expressed as a mixture of red, green and blue (RGB) light in different proportions and intensities. If these colors overlap, cyan, magenta and yellow are produced.

At present, most displays adopt RGB color standard,

On the display, the color is generated by the electron gun hitting the red, green and blue LEDs on the screen. At present, computers can generally display 32-bit colors, with more than 10 million colors.

All the colors on the computer screen are made up of red, green and blue lights in different proportions. A group of red, green and blue is a small display unit. Any color on the screen can be recorded and expressed by a set of RGB values.

In the computer, the so-called "how much" of RGB refers to brightness, and it is expressed by integers. Normally, RGB has 256 levels of brightness, which are expressed by numbers from 0, 1, 2 ... to 255. Note that although the numerical height is 255, 0 is also one of the numerical values, so there are 256 levels. Just as there were 11 years from 2000 to 2010.

According to the calculation, 256 RGB colors can combine about 16.78 million colors, that is, 256× 256× 256 = 16,777,216. It is often referred to simply as 16 million colors or 10 million colors. Also known as 24-bit color (2 to the 24th power).

In the field of led, the three-in-one dot matrix full-color technology is used, that is, RGB three-color chips are combined into full-color pixels in a light-emitting unit. With the continuous maturity of this technology, led display technology will bring more rich and true color feelings to people.