Breakthroughs in LED front-end technology will bring more space and opportunities for back-end lighting applications. High-density LED packaged devices with high optical control factor OCF bring significant value. First of all, LED package devices with small enough size and high enough performance can bring more creativity and space than ordinary LED package devices, thus challenging traditional design concepts. At the same time, combined with intelligent lighting technology, it will create “emotional†for LED lighting. The intelligent experience makes the product differentiated and occupies a high value-added territory. Light will no longer be just a simple lighting, it will be beyond lighting, it is no longer just a product, it will become a customized service to satisfy people's lives. When people use the portable tablet and smartphone to surf the Internet or communicate with friends and family network, will they still remember the 286, 386 computers that we thought were so advanced 20 years ago? Looking back now, the machine that used to be so mysterious is running so slowly and the volume is so huge...
Furthermore, high-density LED packaged devices with high optical control factor OCF mean a high return on investment. LED lighting manufacturers are able to achieve greater returns in the same physical space and optical counterparts. Due to the small size of the high-density LED package, a larger number of products can be arranged in the same physical space, and each product has higher performance, which can meet the needs of applications such as high lumen output. . This is like transforming a land with a fixed area of ​​old housing to build a high-rise building. In the same land area (same physical space), more tall buildings can be built (a larger number of high-performance products are arranged), which will bring higher returns to land developers (LED lighting manufacturers).
All in all, high-density LED packaged devices with high optical control factor OCF will enable newer, smaller, higher-quality lighting, lower system cost, more flexible lighting design, and more innovative lighting products. A generation of LED lighting solutions is possible. This will not only provide better solutions for the existing LED lighting stock market, but also bring more imagination and development opportunities to the new LED lighting market in the future. The continuous improvement of high-density LED technology provides a sustainable driving force for the LED lighting market.
In the research and development of high-density LED technology, Cree announced in March 2014 that the white light power LED laboratory has a luminous efficacy of 303 lm/W (measured under standard room temperature environment, correlated color temperature of 5,150 K and 350 mA drive current). The LED light efficiency is 303 lm/W), once again setting a milestone in the LED industry. The laboratory light effect breaks through the barrier of 300 lm/W, which is not only a breakthrough in the research and development record, but also will have a profound impact on the LED lighting industry! The 303 lm/W enhances the LED performance boundary, which will further drive the overall improvement of LED lighting performance in terms of unit size including light efficiency, light output, and light quality. Professor Steven DenBaars, director of the Center for Solid State Lighting and Energy at the University of California, Santa Barbara, praised: "This is a remarkable achievement! The ability to achieve this level of LED light efficiency will expand the potential of the solid-state lighting industry. To achieve smaller size and lower cost lighting solutions, and even achieve more significant energy savings than expected."
In the development of high-density high- power LED package devices, Cree currently offers three products, XLamp® XP-L LED, XLamp® XB-H LED, and XLamp® XQ-E LED, to ensure excellent light quality. This allows for a higher light efficiency and lumen output for smaller LED package devices. For example, Cree XLamp® XB-H LEDs combine the performance of previous generation XLamp® XP-G2 LEDs with the package size of XLamp® XB-D LEDs, setting a new benchmark for high-power LED devices. The XLamp® XB-H LED is available in a package size of only 2.45mm x 2.45mm and is capable of delivering up to 175 lm/W at 25 °C and 1 W. Compared to XLamp® XP-G2 LEDs of the same performance level, XLamp® XB-H LEDs are only 50% smaller. Compared to XLamp® XB-D LEDs in the same package size, XLamp® XB-H LEDs offer up to 3 times the lumen output under the same light conditions. XLamp® XB-H LEDs with high optical control factor OCF provide lighting manufacturers with higher brightness and better optical control to help increase design flexibility, increase performance and reduce system cost without sacrificing reliability .
In the development of high-density COB device products, Cree currently offers XLamp® 1310 LED, XLamp® 1520 LED, XLamp® 1850 LED, and XLamp® 2590 LED. Under the premise of excellent light quality, COB devices with smaller light-emitting surface (LES) size achieve higher center light intensity and lumen output. For example, the Cree XLamp® CXA1850 LED combines the performance of the previous generation XLamp® CXA3050 LED with the luminescent surface (LES) size of the XLamp® CXA1820 LED to set a new benchmark for COB devices. With a light-emitting surface (LES) size of only 12mm and a luminous flux of over 9,000 lm, the XLamp® CXA1850 LED enables LED lighting solutions to reduce power consumption by half while maintaining the same center intensity and light quality as a 70 W ceramic metal halide lamp. The XLamp® CXA1850 LED has a LES size of only 50% compared to the same performance level of the XLamp® CXA3050 LED. Compared to the XLamp® CXA1820 LED with the same luminescent surface (LES) size, the XLamp® CXA1850 LED has twice the lumen output of the same light efficiency.
High-density LED technology is also suitable for the development of LED module products. Cree launched the industry's first 8,000 lm LMH2 LED module in March 2014, resulting in 850 lm, 1,250 lm, 2,000 lm, 3,000 lm, 4,000 lm, 6,000 lm in the same light source system of the same form factor. The 8,000 lm rich product selection meets the high lumen output requirements of different ceiling lighting applications without sacrificing light quality and reliability. The size of the LED module remains the same, and the performance of the LED module is constantly improving. This is a huge change brought about by the high-density LED technology. The 8,000 lm LMH2 LED module provides an uncompromising and easy-to-use solution for applications such as conference centers, airports, auditoriums, and shopping malls. The 8,000 lm LMH2 LED module is optimized for 150 W ceramic metal halide replacement with a power of only 63% and a lifetime of three times.
High-density LED technology is an important breakthrough in the development of LED lighting. Like Moore's Law, it summarizes the macro development of LED lighting and will become an important guide for the development of LED lighting industry. At present, various LED technology routes, dressing technology, flip-chip and CSP (Chip Scale Package) seem to be varied, but the original source, after comprehensive analysis and comparison, we The development of LED technology can be clearly explored, and the direction of various technical routes is all aimed at being able to withstand greater current drive in a smaller LED chip area, and to obtain higher luminous flux and thinner. Such characteristics, in order to obtain better performance (lighting efficiency, luminous intensity, product life, lumen cost, etc.). This is the high density LED technology! This is the era of high-density LEDs!
High-density LED technology will bring subversive innovation to LED lighting, and LED lighting will usher in a new wave of development in the future. Light will no longer just meet people's basic lighting requirements, but will become a service. The combination of LED lighting and smart technology, such as LED smart home lighting, LED smart retail lighting, LED smart office lighting, LED smart factory lighting and other series of special lighting will help open a broader market, such as computers, smart phones, etc. Great changes brought to people.
In an era of rapid technological advancement, there will always be some conservative voices saying, "The current level of technology is good enough. We can make the products cheaper next." Going against the water, if you don’t advance, you will retreat. If it is satisfied with the current state of the art, it will be passively beaten or even eliminated in the future market competition. To make a very simple analogy, now that even if the traditional functional phone is cheaper, how much profit is there, can it still compete with the smartphone? The dynamics of the international industry are very worthy of our attention. The US Department of Energy released the latest Solid-State Lighting Research and Development Multi-Year Program Plan in April 2014, from which we can learn about the US Department of Energy's LED packaging devices and Planning for the future development of LED lamps. The LED packaged device has a cool white light effect of 231 lm/W in 2020 and a long-term target of 250 lm/W. The LED packaged device has a warm white light effect of 225 lm/W in 2020 and a long-term target of 250 lm/W. The efficacy of LED luminaires (projects supported by the US Department of Energy) reached nearly 180 lm/W in 2020 with a long-term target of >200 lm/W. In the management of the leopard, these plans and data should be said to give a lot of warnings to meet the current state of the art and think that LED performance is high enough and no need is higher. When strong international colleagues set more ambitious goals, we should not be complacent about the small achievements we have achieved. The growth track of the semiconductor industry and the mobile phone industry is a good reference. Companies that insist on continuous innovation stand out from the crowd, and the companies that are self-sufficient, even if they have achieved success in the early days, have not been able to keep up with the rapid development of the industry and only have the feeling of where they are today!
High-density LED technology will become an important waterway, helping companies to sail from the crowded Red Sea market to the vast blue ocean market. According to the predictions of many domestic and foreign industry organizations, the penetration rate of LED in lighting will have a rapid increase in the next few years, and will reach about 45% around 2020. Will the LED lighting fixtures still be in the current style? After the LED has completed the lighting replacement market, what kind of form will it appear in the new lighting market? All of these require us to seriously consider and be prepared from now on, so as to realize the phoenix nirvana from "manufacturing" to "intellectual creation", and in a more favorable position in the future market competition!
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