Reasons for the color change of LED lamp beads
The development of ED lamp beads is now on the right track; so now some people still ask how the color change of LED lamp beads comes from? How do LED lamp beads change color? Today, I will briefly talk about the reasons for the discoloration of LED lamp beads:
The color change of LED lamp beads uses the principle of three primary colors (red, green, and blue), because the human visual system is most sensitive to these three colors, and most visible light is red, green, and blue. The three colors are mixed in different proportions. made! The same monochromatic light can also be divided into these three kinds of light. According to this principle, three colors of red, green and blue will be installed in the LED. For example, if red light and blue light are lit at the same time, it is purple, and if red light and blue light are lit together, it is yellow. Similarly, if there is blue and white in sequence, there will be colorful colors, and there are all kinds of annoying colors that we see now! These are the most basic. If you want to keep improving in terms of color brightness, chroma, etc., then you can divide each color of red, green and blue into 256 gray levels (gray level 256 is the three primary colors of red, green and blue, From not bright to the brightest is divided into 256 levels) is the brightness level, so that the so-called full color can be formed. So the question is how to accurately control the grayscale of the three colors of red, green and blue to adjust the various required colors? Therefore, an integrated circuit is generally added to the lamp bead, and the gray level of the three colors of red, green and blue is controlled by pulse width modulation to realize the color change.
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