For a long time, due to the low luminous efficiency of LEDs, its applications have been mainly concentrated in various display fields. With the emergence of ultra-high-brightness LEDs (especially white LEDs), many cities in China are actively using LED light sources. First of all, the government emphasizes the use of LED street lights, so that people continue to recognize and use LED light sources. According to forecasts by international authoritative organizations, the 21st century will enter the era of new lighting sources represented by LEDs, which are called the fourth generation of new light sources.

      "Green lighting" is a new concept put forward in the field of foreign lighting in the late 1980s. The implementation of my country's "green lighting project" began in 1996. An important step to realize this plan is to develop and promote high-efficiency, energy-saving lighting fixtures, save lighting power, reduce environmental and light pollution, and establish a high-quality, efficient, economical, comfortable, safe, reliable, and environmentally friendly lighting system. However, the requirements for "green lighting" are far from enough, and it is imperative to develop and apply more efficient, reliable, safe, and durable new light sources. At present, lighting consumption accounts for about 20% of the entire power consumption, and greatly reducing lighting power consumption is an important way to save energy. To achieve this goal, the industry has researched and developed many energy-saving lighting appliances and achieved certain results. Many countries restrict the production and sale of incandescent lamps in the form of laws and regulations. my country has also introduced corresponding regulations to restrict the use of high-energy-consumption and low-efficiency lighting appliances, and actively promote the use of low-energy-consumption and high-efficiency light sources.

        The United States, Japan and other countries and Taiwan of China have predicted the benefits of LED lighting. In the United States, 55% of incandescent lamps and 55% of fluorescent lamps are replaced by LEDs, saving US$35 billion in electricity bills and reducing 755 million tons of carbon dioxide emissions each year. The replacement of 100% incandescent lamps in Japan with LEDs can reduce the power generation of 1 to 2 nuclear power plants and save more than 1 billion liters of crude oil consumption every year. In Taiwan, 25% of incandescent lamps and 100% of fluorescent lamps are replaced by white LEDs, saving 11 billion kilowatt-hours of electricity each year. Energy saving is the main reason why we consider using LED light sources. Perhaps LED light sources are more expensive than traditional light sources, but one year of energy saving can recoup the investment in the light source. For factories and commercial electricity, six to eight months of energy saving can recoup the investment in the light source. , So as to obtain a net profit period of several times of energy saving every year from four to nine years. With the modernization of offices, the number of computers in our country continues to increase. In addition, my country’s household LCD TVs use LED light sources as the backlight source of LCD screens, which saves considerable power. Now, with the improvement of the LED production process, the SMD LED production process can completely produce LED products that replace the light source of the LCD screen.