LED lighting industry: technology integration brings application innovation

LED Philps Lumileds, inventor of the yellow light of George Crawford (GeorgeCraford) published a report entitled "semiconductor lighting development trend and the future ten year outlook" report, he from the aspects of LED development brief history, performance, packaging and performance trends, the next ten years of industrial development prospect to the participants to share their wonderful views.

George Crawford pointed out that in the past ten years the rapid development of LED lighting industry, through the development of new technology, constantly optimize the existing technology, continuous progress in the LED lighting light efficiency and light color performance, comprehensive cost. The continuous emergence and development of new technologies will certainly have a positive impact on the development of the industry, but what kind of technology will become the most important technical trend is still not conclusive, the need for continuous observation. Intelligent control system will be in the stage of alternative lighting and LED lighting integration, the future of the entire industry will continue to develop the direction of innovative applications.

The future of LED lighting will continue to look for the impetus of industrial development from the perspective of technology integration, and packaging may play a more important role. In the next ten years, the development of LED lighting industry will further open the new power of innovative applications on the basis of technological breakthroughs, solid-state lighting will provide a more comfortable and balanced light environment in the world.

Technology upgrading and cost reduction are still in progress

Reviewing the course of development of the LED lighting, with the rapid increase of LED red, blue and green have been invented and the efficiency of the final birth of white LED, LED truly become a lighting light and white light effect is improved rapidly, promote the rapid development of the whole industry.

According to the development plan of LED lighting industry in the United States DOE2013 released in April, the performance of LED device performance, the light effect of cold white LED devices in 2013 for 164lm/W, 2020 is expected to reach 235lm/W, the ultimate goal is 266lm/W. From the perspective of comprehensive cost performance, LED cold white light device in 2013 was 4$/klm, in 2020 will reach 0.7$/klm, the target is 0.5$/klm. The performance of the warm white LED devices, in 2013 129lm/W, in 2020 will reach 224lm/W, and ultimately reach 266lm/W, the price ratio of the angle, in 2013 was 5.1$/klm, in 2020 was 0.7$/klm, the target is 0.5$/klm. At present, the performance of LED lighting products doubled, while prices fell rapidly, the development of LED lighting industry has reached a critical period of market breakthrough.

Packaging will focus on application needs to enhance the cost

Now LED lighting device has been available to enhance light efficiency compared to the original dozens of times, the development of the whole industry from the perspective of technological progress, has a better substrate production technology, technology, packaging, and greatly enhance the quality of the light. The future of LED lighting industry will integrate all these factors to further seek the driving force of industrial development, all of these factors, the packaging will play a very important role.

From the evolution of LED packaging technology, before 2000, the chip size of the package is less than 0.35mm2, the input power is less than 0.1W. 2000-2008 LED chip package size can be greater than 1mm2, the input power can also reach 1 ~ 5W. Packaging technology is now in the direction of greater power, more luminous flux, of course, such a system is more complex, but also to further reduce the cost of the problem. In ceramic packaging, for example, although this package does not improve the performance so quickly, but the cost is greatly reduced. At present, more and more forms of packaging products, product lines are also very rich, product development is the core of the principle of the application of the requirements of the specifications and product form design.

Philips Lumileds also launched a series of LUXEONTX products is the newest product of LUXEONT series, the color control in 3 ~ 5 step macadam ellipses within the 3737 package, at 85 C, 700mA and 2.8V under the condition of low voltage current, cooling performance is very good, up to 3K/W, this product can be used in 50W MR16, can also be used for outdoor lighting lighting, the 350mA input current conditions, the light efficiency reached 120lm/W. The color rendering index of this series is 70, 80, 85 and 90, color temperature culvert cover from 2700K to 6500K and other multiple range, so that can be used for almost all lighting occasions. From 2011 Q4 to Q4 in 2012, LUXEONT series packaging performance increased by 23%. 2013 Q4, LUXEONTX product performance has increased by 15%. The rapid increase in the performance of LED packaging devices also contributed to the continued decline in the cost of terminal lighting.

The next ten years: Integrated Innovation

LED lighting industry will continue to enhance the effectiveness of light, cost-effective and lighting quality through more in-depth optimization of existing and emerging technologies. The overall quantum efficiency, light extraction efficiency, electrical conversion efficiency, socket efficiency, conversion efficiency and so on will have an impact on the overall LED light. The development of intelligent systems will also be integrated into the process of transformation from the replacement market to the innovation market.

At present, the red phosphor has a longer wavelength, which is about 90 ~ 100nm, and the output of the red phosphor is reduced by the excitation of the far red phosphor. If the emission width of red phosphor is reduced, the color index of warm white light can be increased by 20%. Once the red phosphor wavelength narrow, color rendering index and lumen output for the emission wavelength of red phosphor becomes very sensitive, which indicates that the color index is not a good indicator, perhaps in the next ten years will find a better color evaluation index.

LED lighting industry continues