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With the appearance of blue LEDs, it is the lighting fixtures that first make a big difference in life. The life of LED lighting is about 40,000 to 60,000 hours, 20 to 30 times that of bulb-type incandescent lamps, and 3 to 5 times that of fluorescent lamps. The power consumption is about one-sixth of that of incandescent lamps. Because it helped to save energy, it spread rapidly in Japan after the Great East Japan Earthquake. According to the Japanese survey company Fuji Economy (Central District, Tokyo), the global market for LED lighting in 2013 was 175.65 billion yen. It is expected to expand to 3.8 times in 2013 to 6.8 trillion yen by 2020.
LEDs used in automotive headlamps were in 2007. Toyota Motor is the first to develop a product developed by Otaru Manufacturing Co., Ltd. on the premium car brand “Lexusâ€. Subsequently, it was also promoted and applied on 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 popularity of digital home appliances. A representative example is an LCD TV. Sharp's commercial LCD TVs in 1986 originally used fluorescent tubes as the light source for backlights. However, after the invention of the blue LED, the use of the LED as a light source has promoted the low power consumption and thinness of the television. Blu-ray disc devices that can achieve high-definition images and high-quality music are also favored by Blu-ray LEDs.
In the future, LEDs will be used as artificial suns in plant factories. At the same time as the plant grows, the effective color of the plant changes, but the LED can be used to produce a light color that conforms to each growth stage. It can also effectively grow vegetables.
According to the US survey company IHS, the global market size of LEDs in 2013 was about 2.3 times that of 2008 five years ago, at $159.90 billion. After the introduction of LED embedded products, the market size will further increase significantly. 
The global market for LED lighting will reach 7 trillion yen
On October 8th, the invention of the blue-light diode (LED), which won the Nobel Prize in Physics for 14 years, commercialized lighting fixtures with low power consumption and long life compared to incandescent bulbs and fluorescent lamps. It is also used for backlights for flat-panel TVs and mobile phones, and has also played an important role in the popularization of digital home appliances. The invention of three Japanese scientists created a huge new market.