SPMWHT32BMD5YBUSS0

Light emitting diode (LED) lighting has become increasingly popular for commercial, residential and industrial illumination applications due to its energy efficiency, control, and long lifetime. As the traditional light source, white LED (SPMWHT32BMD5YBUSS0) a kind of conventional white light is becoming the preferred choice for many users. This article will discuss the application field and working principle of white LED.

I. Application Fields of White LED

The emergence of white LED has brought revolutionary changes to mobile device backlight system, car interior decoration and lamp lighting technology. Therefore, white LED is widely used in a variety of lighting applications.

First and foremost, White LED is the most popular choice for mobile device backlighting. Mobile phones, laptop computers, cameras and other electronic products are gradually equipped with white LED backlights. In addition, white LED is also popular in car interior design. They are used to create a vivid environment in the car, and some new cars even use white LED to replace traditional headlights, which can significantly improve the light efficiency and reduce the power consumption. Last but not least, white LED is also widely used in emergency lighting and traffic indication. The white LED lights are bright and energy-saving, making people and cars more visible at night.

II. Working Principle of White LED

White LED is made up of several LED chips that emit multiple wavelengths of light combined to produce the desired white light. The working principle of white LED is that when a forward voltage is applied to the anode, electrons and holes will be injected simultaneously into the p-n junctions from both sides; when a hole and electron meet in the p-n junctions region, they will recombine each other, thus generating photon. When a current flows through the p-n junction, photons will be emitted by accumulated electrons and holes. The light produced by the photons is determined by the wavelength and the materials used.

The wavelength of the light emitted by white LED is different from the traditional light sources. White LED has a much higher frequency which means that white LED can produce much weaker red light or infrared light than traditional light sources, making it more efficient. The efficiency of white LED can reach up to 80 lumens/watt, while the traditional light source efficiency is only 15 lumens/watt. In addition, white LED can also produce a narrower spectrum than other light sources, which can more accurately reproduce the color.

Conclusion

White LED (SPMWHT32BMD5YBUSS0) is a new generation of conventional white light source. It has a wide range of applications, such as mobile device backlight system, car interior decoration, emergency lighting, and traffic indication lights. The working principle of white LED is that when a current flows through the p-n junction, photons will be emitted by accumulated electrons and holes. White LED is more efficient than traditional light sources and can accurately reproduce the color. Therefore, white LED has become the preferred choice for many users.