Let LED illuminate the homes of ordinary people

Perhaps coincidentally, lighting technology in the history of human development, World Expo is closely related to the sum of. In 1889 the French Paris World Expo, Edison's incandescent lamp decorate the Eiffel Tower; in 1939 the United States of World Expo, demonstrated the first practical fluorescent lamp; 2010 in Shanghai World Expo, from the river to display the opening ceremony of nearly 9000 square meters, to the park every night bright lights at night, LED semiconductor lighting shine will open a new era of lighting era.

LED brings a new era of lighting, not only reflected in the icing on the neon lights. In the industry view, the great promise of semiconductor lighting, must be into the homes of ordinary people, shoulder the responsibility of home lighting. However, to truly achieve this, there is still a long way to go.

Home lighting, an important city"

LED semiconductor lighting technology is developed at the end of last century in 60s, which is the core component of light emitting diode, the luminescence principle at the micro scale, let "into" mobile electronic quantum wells, resulting in a certain wavelength of light. Because of this process almost no heat loss, so compared to the traditional incandescent lamp, fluorescent lamp, luminous efficiency is much higher. In recent years, LED in landscape lighting, display and other applications has entered a relatively mature stage; but the application in indoor home lighting has just started, and this "city" does not capture, the real "LED lighting era" would be impossible.

Shanghai semiconductor lighting engineering research center assistant director Dr. Yang Weiqiao analysis, the reason why LED home lighting is difficult to spread, there are technical reasons, there are conceptual reasons. Technical level, the white light required for indoor functional lighting, compared to the landscape lighting of red, green, blue color, to achieve greater difficulty. At present, LED white light can reach 80 lumens / watt illuminance, to meet the functional needs of indoor reading, but the price is higher than conventional lamps 3 - 8 times. A high price, consumers naturally unacceptable.

In fact, the benefits of LED home lighting. It can save more than 30% electricity than ordinary lamps; the actual service life up to 30 thousand hours to 1000 hours, the incandescent lamp fluorescent lamp for 6000 hours by the user as it can be inferior by comparison; adjust the brightness, and the same proportion to reduce the electricity consumption. Therefore, more and more families in Europe and the United States removed the traditional lamps, mounted on the LED lights.

In China, people's understanding of LED lighting, or stay in the 'neon', or confined to the 'big screen'. LED for indoor lighting, or a new concept, many people may not accept, in fact, this is a bigger and more important application areas. Yang Weiqiao said with a slight regret.

Reduce prices, the key in domestic enterprises

The industry believes that to make LED lighting technology really into the home life, domestic enterprises bigger and stronger is a prerequisite. The reason for the high price of LED indoor lighting is that the core technology is in the hands of foreign companies. Once the domestic enterprises in the core technology can compete with foreign companies, the price will be loose.

Data show that in 2009 the national LED industry output value reached 82 billion 700 million yuan, which is at the lower end of the industrial application value is about 60000000000 yuan, while the key involves the core technology of substrate materials, epitaxy and chip manufacturing, domestic enterprises only created 2 billion 800 million yuan in output value.

China's LED epitaxy and chip manufacturing of key technologies, key equipment imported, will become the constraints of the soft underbelly of industrial development. Hao Luoxi, Professor of Tongji University, who is responsible for the overall planning of the Expo Night lighting. According to Yang Weiqiao introduction, the majority of domestic companies to do LED lamps small and scattered, and some have even heard of the recent LED industry fire was switched over, how many technical content can be imagined. Like many emerging industries, there is also a lack of independent core technology behind the surface of prosperity.

To this end, Shanghai semiconductor lighting engineering research center is drafting the industry's "12th Five-Year" plan, the main epitaxy, chip manufacturing technology and core equipment production and function of lighting applications, by World Expo semiconductor lighting light, the semiconductor lighting industry and household penetration in the post Expo period

The development of double harvest"

From the Expo to foresee the future LED Era

It is estimated that if 1/3 of the country's traditional lighting with LED replacement, the annual electricity consumption is equivalent to the amount of electricity generated by a Three Gorges Hydropower station. The future of the LED era, what will be the scene? Under the efforts of Shanghai semiconductor lighting engineering research center, this year, World Expo has exhibited a few "fragments" -

"Shanghai eco home" two floor "Youth Apartment", indoor lighting all by LED featuring, and can be adjusted according to user needs. Cloudy days, LED lights a little more open, do not have to be very bright, you can make up with the natural light each other; at night, LED lights to all bright. If you need to create a romantic atmosphere, color LED lamps can also be competent.

Expo Center Hall, bright and comfortable LED light from the top of the 14 meter high exposure, can meet the requirements of the participants read. Project director Li Qinglai World Expo World Expo Group to participate in the project interpretation: "LED has been a bottleneck in the application of indoor lighting function, LED lights the government hall in such a distance can meet the reading needs, is a great breakthrough. LED home lighting, we have more confidence. "

Two thousand and nine