According to the report of Nikkei Chinese network on October 8, the invention of blue light diode (LED), which has won the Nobel Prize in physics for 14 years, has commercialized lighting appliances with low power consumption and long service life compared with incandescent bulbs and fluorescent lamps. It is also used for backlights of flat-panel TVs and mobile phones, and has also played an important role in the popularization of digital appliances. The invention of three Japanese scientists created a huge new market.

With the appearance of blue LED, the first thing that makes a significant change in life is lighting appliances. The service life of LED lighting is about 40000 ~ 60000 hours, which is 20 ~ 30 times that of bulb incandescent lamp and 3 ~ 5 times that of fluorescent lamp. The power consumption is about one sixth that of incandescent lamps. Because it is conducive to energy conservation, it was quickly popularized in Japan after the East Japan earthquake. According to the statistics of Fuji economy (Central District of Tokyo), a Japanese research company, the global market scale of LED lighting in 2013 was 1765 billion yen. It is expected to expand to 3.8 times that of 2013 by 2020, reaching 6.8 trillion yen.

Led was used in car headlights in 2007. Toyota took the lead in equipping the high-end car brand "Lexus" with the products developed by Xiaosi production. Subsequently, it was also popularized and applied on mass production models. The proportion of LEDs in headlamps was only about 10% in 2012 (converted by amount), and it is predicted that it will reach 75% by 2022.

The invention of blue LED has also opened the way for the popularization of digital appliances. A representative example is LCD TV. Sharp commercialized LCD TV in 1986, using fluorescent tube as the light source of backlight. However, after the invention of blue LED, led was used as the light source, which promoted the low power consumption and thinness of TV. Blu ray disc equipment that can realize high-quality image and high-quality music has also been favored by Blu ray led.

In the future, it is estimated that led will be used as artificial sun in plant factories. At the same time of plant growth, the effective light color for plants will change, but the light color in line with each growth stage can be produced by using LED for illumination. It can also effectively grow vegetables.

According to the statistics of IHS, the global market scale of LED in 2013 was about 2.3 times that of 2008 five years ago, with us $15.99 billion. After the introduction of LED embedded products, the market scale will further increase significantly.