Eroded LED lighting

LED (Lighting Emitting Diode) is a light emitting diode and is a semiconductor solid light emitting device. It uses solid-state semiconductor chips as light-emitting materials. In the semiconductors, carriers emit excess energy through carriers and cause photon emission, which directly emits red, yellow, blue, green, cyan, orange, violet, and white light. LED lighting products are lighting fixtures that use LEDs as light sources.

LED is known as the fourth generation lighting source or green light source, has the characteristics of energy saving, environmental protection, long life, small size, etc., can be widely used in a variety of indication, display, decoration, backlight, general lighting and urban nightscapes and other fields. In recent years, some of the world's economically developed countries have launched a fierce technological competition around the development of LEDs. The United States has invested 500 million U.S. dollars to implement the "National Semiconductor Lighting Plan" since 2000, and the European Union announced in July 2000 that it would launch a similar "Rainbow Plan." China's Ministry of Science and Technology, with the support of the "863" Program, proposed the development of a semiconductor lighting plan for the first time in June 2003. Generally speaking, semiconductor lighting generally refers to lighting that uses LEDs as a light source. Broadly speaking, it should also include LD (laser diode) lighting as a light source. LD can be used for stage lighting, large-scale outdoor gatherings, celebrations, entertainment, and long distances. Lighting and so on.

Advantages of LED light source: high energy saving, long life, many changes, environmental protection, high-tech LED shortcomings at the current stage 1, the light intensity attenuation due to temperature rise.

2. The LED is actually a semi-conductor PN junction. Although the forward voltage is within a range, it is different due to the manufacturer, equipment model, and batches. This situation can easily lead to a considerable part of the LED not working. At the normal working point.

3, a single LED power is low. In order to obtain high power, multiple parallel uses are required, such as car taillights. A single high-power LED is expensive. At this stage, LED prices are several times, ten times or even several times more expensive than incandescent lamps.

4, low color rendering index. The color displayed under the LED illumination is not truly incandescent.

Semiconductor Lighting Industry From a global perspective, the semiconductor lighting industry has formed a three-footed industrial distribution and competition pattern dominated by the United States, Asia, and Europe. With the rapid development of the market, major manufacturers in the United States, Japan, and Europe have expanded production and accelerated their market share. According to the current development of the global LED industry, it is predicted that LED lighting will reduce the global lighting power consumption by half. Since 2007, Australia, Canada, the United States, the European Union, Japan, and Taiwan and other countries and regions have announced that they will gradually phase out incandescent lamps. LED lighting has become the focus of the global industry.

China's LED industry started in the 1970s. After more than 30 years of development, China's LED industry has initially formed a relatively complete industrial chain including the production of LED epitaxial wafers, the preparation of LED chips, the packaging of LED chips, and the application of LED products. Under the promotion of “National Semiconductor Lighting Project”, the semiconductor lighting project industrialization bases of seven countries including Shanghai, Dalian, Nanchang, Xiamen, Shenzhen, Yangzhou and Shijiazhuang were formed. The Yangtze River Delta, the Pearl River Delta, the Chongqing Triangle, and the northern region have become the gathering grounds for the development of China's LED industry.

At present, the development of China's semiconductor lighting industry is good, the development of epitaxial chip companies is particularly rapid, the scale of packaging companies continues to maintain rapid growth, and lighting applications have made great progress. In 2007, the output value of LED application products in China has exceeded 30 billion yuan. It has become the world's largest producer and exporter of LED full-color displays, solar LED, landscape lighting and other application products. The emerging semiconductor lighting industry is forming. Domestic lighting industry has formed certain characteristics. Among them, outdoor lighting has the fastest development. There are more than 100 LED street lighting companies and dozens of demonstration roads have been built. However, domestic large-size LCD backlights and automobile headlights are still lagging behind.

The concentrated display of LED lighting in the 2008 Beijing Olympic Games gave people a new understanding of LED, which strongly promoted the development of China's semiconductor lighting industry. At present, China's semiconductor industry is big but not strong, and its core competitiveness needs to be further improved. For domestic companies, strengthening large-scale, improving product quality and technology level is the top priority. It will increase the ability to obtain the licensing price of large plants in the future, or gradually break through core patents through R&D.

From the perspective of industrial development prospects and trends, due to the importance of environmental protection, energy conservation and carbon reduction, the application of semiconductor lighting has become increasingly widespread, and a large number of domestic and foreign manufacturers have also been competing to invest in this emerging industry sector. The rapid development of China’s economy has made international capital and private capital attractive to the Chinese semiconductor lighting market. In recent years, an upsurge of investment has been made in the domestic market. It is expected that the output value of China’s entire LED industry will exceed 150 billion yuan in 2010.