The LED light is an electroluminescent semiconductor material chip, which is cured on the bracket with silver glue or white glue, and then connects the chip and the circuit board with silver or gold wires, and is sealed with epoxy resin around it to protect the inner core wire. function, and finally install the shell, so the shock resistance of the LED light is good.

Used as a household lamp. Many LED lamps can replace spiral incandescent lamps or energy saving light bulbs, from 5-40 watts, low power incandescent lamps, to 60 watts. Some lamps can even replace higher wattage bulbs, for example a 13 watt bulb is about as luminous as a 100 watt hot incandescent lamp. LED bulbs are also available in different colors, but with lower power and maintenance costs.

As everyone knows, the wavelength range of the visible light spectrum is 380nm to 760nm, which is the seven colors of light that the human eye can perceive - red, orange, yellow, green, cyan, blue, and purple, but these seven colors of light are each. A monochromatic light. For example, the peak wavelength of red light emitted by an LED is 565 nm. There is no white light in the spectrum of visible light, because white light is not monochromatic light, but a composite light composed of multiple monochromatic lights, just as sunlight is composed of seven monochromatic lights. White light is also synthesized from the three primary colors red, green and blue.

It can be seen that to make an LED emit white light, its spectral characteristics should include the entire visible spectral range. But to make LEDs of this performance is impossible under process conditions. According to people's research on visible light, the white light that can be seen by the human eye requires at least a mixture of two kinds of light, that is, two-wavelength light (blue light + yellow light) or three-wavelength light (blue light + green light + red light) mode .

Both the above-mentioned white light modes require blue light, so the absorption of blue light has become a key technology for manufacturing white light, that is, the "blue light technology" currently pursued by major LED manufacturing companies. There are only a few manufacturers who have mastered "blue light technology" in the world, so the promotion and application of white LEDs, especially the promotion of high-brightness white LEDs in my country, still has a process.