LED "surface light source" technology breakthrough in Nanjing

LED "surface light source" technology breakthrough in Nanjing

LED is a green energy saving lighting material which is replacing the traditional incandescent lamp. But at present the use of the LED "point source" products exist lack of attenuation, high cost, slow cooling, affecting its promotion process. The key technology to overcome the defects of the existing LED products is to replace the "point light source" with "surface light source". Under the support of the Nanjing 321 plan, LED surface light technology recently made a breakthrough in Nanjing.

Magic: no light bulb is very bright

Yesterday, the National University of science and Technology Park in the Nanjing Male Rock Photoelectric Technology Co., Ltd., the reporter saw the use of LED light source technology, a lamp. Lamp holder, lamp neck, lamp holder...... At first glance, this table lamp and ordinary table lamp two. However, a closer look at the reporter to see the difference - this lamp does not have a light bulb. There is no light bulb how to shine when the reporter doubts, the general manager of the company Bian Guohua turned on the switch, as if the magic in general, bright light from the bulb does not have to shed.

"The secret of the light is the light. Along the direction of the Bian Guohua finger, the reporter saw a small round piece in the lamp cap, less than 4 cm in diameter, the thickness of less than 1 mm, yellow background. Careful observation, above the black dot. In fact, each of the small black dots are a small luminous body. As you can see now this piece of light source, it is made up of 300 small chips, this lamp is 3 watts, equivalent to ordinary lamp 20 watt. Said Bian Guohua, general manager of the company. The lamp made of the 10 watt light source is an incandescent lamp with a brightness equivalent to 100 watts.

Different from the LED industry commonly used 'point light', our product is the entire surface of the light, others' products are on the spot (beads) light. "Bian Guohua said, enterprises invested a total of 30 million yuan, took 5 years, by the core team of independent research and development of" LED "technology, the surface light source and driving chip with independent intellectual property rights. Last year, the project was also selected Nanjing 321 plan to support the project.

Advantages: compared to "point light source" product life longer and more energy saving

LED "surface light" products more energy saving, longer life. Lu Hanxiong is the company's core R & D personnel, but also the Hongkong Institute of engineers, Royal engineers. He told reporters that the enterprise to do specialized estimates, to 10 watt LED "light" than incandescent lamps for example, saving more than 90% than the ordinary energy-saving lamps, at least more than 50% of power, than the general "point source" LED lamp, saving more than 20%. Every year the province's electricity equivalent to save 13.88 kilograms of standard coal, reduce sulfur dioxide emissions by 0.41 kilograms, reducing carbon dioxide emissions by 14.14 kg. Moreover, because the LED "surface light source" is a direct current power supply, the utility model avoids the common lighting because of the stroboscopic effect of the AC power supply, and the utility model is especially beneficial to the healthy green light source of the eye.

The LED lamp will often have light phenomenon, namely after a period of time after the light, the light intensity than the original. We can overcome this problem, through the national testing center of the photoelectric long-term aging test, proved that the LED'surface light source "light for 5000 hours only 0.9% light. Bian Guohua said, LED "surface light source" lamp life expectancy of up to 30 thousand - 50 thousand hours, greatly reducing the maintenance costs of lamps and lamp replacement trouble. At the same time, a good solution to the problem of slow heat dissipation, for example, generally 1 watt LED point light source lamp is usually 1 radiating focus, and light LED surface light source has 50 or even hundreds of scattered hot spots, the heat from the source of nature went down. "

Prospects: low cost so that LED really into the family

With the government to vigorously promote energy-saving emission reduction, LED lighting industry is ushering in the golden period of development. LED lighting has been increasingly used in many fields, such as architecture, landscape and municipal engineering, but there is still a considerable distance from ordinary household users. The reason is mainly because the domestic LED technology is not completely broken and high prices. At present, the domestic LED manufacturers mainly aimed at the construction of landscape lighting, large screen display, traffic lights and other market areas, the development of products for the general public is insufficient, the market is almost a blank.

Bian Guohua said that this year, the company will invest 6 million yuan or so, in Nanjing, Binjiang Development Zone, China's first mainland based on low-power chip LED surface light packaging line, is expected to promote the end of the year. The late development of enterprises also plans to introduce a large area of the new chip grain production technology worldwide, with the updated packaging technology of the new generation, is expected in 3 to 5 years, "LED light" from the current cost of each is about 6 yuan down to 2 yuan per watt to 1, become the epoch-making revolutionary new product green illumination.

Reporters learned that the South has taken the lead in the use of their products. Companies are also willing to take the lead in the public solicitation of a number of high energy consumption of government agencies or universities, free installation of a number of the latest LED surface light products.