The world's first commercial light-emitting diode was born in 1965, made of germanium materials, infrared light, priced at 45 US dollars. Soon there is a LED made of GaAsP material. 1968 LED technology breakthrough, the technology is the use of nitrogen doping process is GaAsP device to enhance the efficiency of 10 times from 0.1 lm / W to 1 lm / W, and the increase in the type of light color, red, orange, Yellow light, then green light. The early 80s AlGAS LED was born a major technological breakthrough, the luminous efficiency of 10 lm / W, once again increased 10 times, can be used for outdoor information display and high brake light central car equipment. 1990 AlInGaP technology, compared to GaAsP device performance 10 times higher. The most efficient LED materials used today are made of a transparent AlInGaP substrate. The decades before and after the new century, the rapid development of various technologies, such as material technology, chip size and other technology makes the rapid development of LED technology to enhance about 30 times. Japanese Shuji Nakamura developed a blue light-emitting diode in 1994, allowing people to see the dawn of white LED, and quickly set off a wave of GaN-based LED research and development. Blu-ray LED increased large-screen display applications. In the late 1990s, phosphors were excited by blue light on a single LED to produce white light, creating the first white LED. In recent years, white LED luminous efficiency of 30 lumens / watt, the study has reached 60 lumens / watt, to the era of fluorescent lamps.
The current global LED industry is in a stage of rapid development, China's semiconductor lighting industry has entered a period of independent innovation and development, this year, the semiconductor lighting market showed rapid growth. Coupled with the state's promotion of energy saving and environmental protection policies, technological advances have led to lower prices and rising market demand, driving the semiconductor lighting industry to flourish. Especially for enterprises with core technology, research and development strength and brand competitiveness, the development is at the same time the absolute superiority of market competition. For China's LED industry, how to make up for the lack of industry, give full play to their own advantages, is the key to the future of China's semiconductor industry, but also in research and development personnel training, accumulate technology to increase investment, breakthroughs in key technologies to improve the patent layout and enhance industrial competition Force, promote semiconductor lighting industry technology development.
In 2015, the total output value of China's semiconductor lighting industry reached 424.5 billion yuan, an increase of 21% over 2014. Over the past 10 years, the average annual output value exceeded 30%. Although it is in a slowdown, it generally continues to rise.
China's semiconductor lighting technology and the world's key technologies are declining in 2015 power LED white light to achieve 150 lumens / watt industrial production. The power efficiency of the power-type silicon-based LED chips with independent intellectual property rights in our country exceeds 140 lumens / watt. The GaN homogeneous white LED technology has made remarkable progress. The high-brightness LED light produced by the homogeneous epitaxy technology of GaN / Al2O3 composite substrate Efficiency of more than 130 lm / W; deep UV LED wavelength 293nm, 20mA current output power reached 4.8mW; In addition, OLED device preparation technology close to the international advanced level, at 1000cd / m2 brightness, the efficiency of 99lm / W, Index is 85, life expectancy exceeds 10,000 hours. Last year, LED lighting industry from alternative applications to on-demand lighting and beyond the lighting forward, wireless dimming system and LED intelligent variable color temperature lighting lamps to achieve a variable ambient lighting environment applications. LED urban road lighting intelligent information management system can realize stepless dimming, sub-control, space-time, light control, fault alarm and other intelligent control functions.
LED industry chain, engaged in low-end product manufacturing of small businesses to survive more difficult. However, well-developed enterprises showed more and more strong momentum, leading to polarization. Mid-stream and downstream application enterprises were highly competitive. Many bankruptcy enterprises and encapsulated listed companies reduced their average profit in the recent three years from 15% to 9%. In 2015, the overall profit of LED listed companies dropped, while the profit of 24 LED listed companies was 11.8%, down 0.4% last year. 2015 Overall adverse market conditions, intense price competition, corporate profits have declined.
With the progress of technology to promote market demand increased in 2015, China's semiconductor lighting industry in general showed rapid growth in 2016, LED lighting industry will be replaced by on-demand lighting and beyond the lighting forward. Under the guidance of the national "13th Five-Year Plan", "Made in China 2025" and "Internet +" and other policies, the semiconductor lighting industry in China will develop in the direction of intelligence, informatization, quality and standardization in 2016 and further cooperate with nano-quantum dots , Graphene and other new materials integration, leading the accelerated development of the semiconductor industry.
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