CREE: technology innovation leads the industry development

Using the best technology to make the best products to allow customers to successfully revealed the Cree word committed to working with our customers win-win service concept. Speaking of LED industry leading supplier, we have to mention the Cree.
In 2013 9th Guangzhou International LED Exhibition, Cree general manager of China Dr. Liu Erzhuang accept China LED Net reporter interview. "Cree is a technology and innovation as the core of the company, from the Cree company has been established for 25 years, we always adhere to scientific and technological innovation, forge breakthrough business philosophy, and constantly for the industry introduced high-quality, cost-effective products. Career in lighting and display areas of the LED highbay light products are highly competitive in the market, this is due to Cree in the products of the four engines. "

Cree general manager of China Dr. Liu Erzhuang
Four leading technology-driven Cree LED lighting revolution
Turning to remain efficient Cree innovations secret, Liu told reporters shared Cree SC ³ technology platform and its four core technologies: a substrate materials, LED chip, phosphor and packaging technologies.
Cree XLamp LED lighting-class products and display High Brightness LED products are built on the same powerful technology R & D platform ---- SC ³ technology platform, which is Cree obtain efficient and innovative core and key. Innovative SC ³ technology platform uses industry-leading Cree SiC substrate material, the LED chip and phosphor conversion on the structure exhibits excellent characteristics, and using the latest packaging technology to match, so as to provide the industry with the most advanced LED devices.
Substrate material: Industry Most chip manufacturers use sapphire or silicon substrates, and Cree using silicon carbide material. Compared with the sapphire SiC, first, from the matching degree in terms of gallium nitride, silicon carbide, gallium nitride materials and the matching degree is very good, it is mismatch of only 3.3%, while the loss of sapphire degree, compared with 14.8%; secondly, silicon carbide from the material concerned, it is the light guide, and this point it and sapphire, but is a silicon carbide semiconductor, which is conductive, the sapphire is an insulator. In addition, the thermal effects of silicon carbide is also very good. Liu pointed out that in terms of silicon carbide material itself is a very good material, the same applies to many other excellent products, which is the core technology Cree one.
LED chip: Direct Attach ™ technology is the generation of a unique Cree LED chip technology, DA chip may provide a lower forward voltage Vf, the lower package thermal resistance Rj-sp, higher light extraction efficiency, and more performance boost. Direct Attach ™ not only allows die mounting area increased five-fold, and the magnitude of the underfill was reduced, so more than any other on the market today LED flip chip technology more robust and reliable. These outstanding features, plus the performance advantages of Direct Attach ™ technology, enabling our customers to develop a lower cost, higher brightness, higher reliability lamps.
Phosphor: phosphor technology in Cree are very few people talk about the. Cree internal phosphor ratio, using the method has its own characteristics.
Packaging technology: Cree on February 13 this year, announced the white power LED light effect again to refresh the record industry. Career development report shows that in correlated color temperature 4,401 K, 350 mA, 25 ° C conditions, the measured receive LED luminous efficiency of 276 lm / W. Career break the record in April last year achieved 254 lm / W R ​​& D results, once again demonstrates Cree go all out to promote innovation and the tireless efforts of the popularity of LED lighting. Career latest packaging technology has played a crucial role.
Science and technology are primary productive forces
In 2004, LED highbay light,  light efficiency is about 22lm / W. And now, Cree LED production level has reached 200 lm / W, while product prices are not to the original 1/3. LED product price increased nearly 27-fold. Have to say that science and technology are the primary productive force.
Liu pointed out that each industry developed from there to the end, winning is the brand, the brand behind the quality, quality behind is the core competitiveness and management. For the Cree, the Cree high quality reputation in the industry from production management, strict quality control requirements. ‖
Continuous innovation does not stop
Cree LED technology 25 years dedicated to the development, and continuously through technological innovation to improve product performance. A series of products as an upgraded version of Cree's new for outdoor display CLV6B and CLX6B products, in terms of reliability and brightness, there has been significant improvement.
Liu pointed out that the new range of products in use, reliability, brightness, and contrast enhancing areas have obvious advantages. Specifically, in protective performance, IP upgrade to X8, while brightness increase by 35% in the case of using the same pitch new products, its brightness is higher, more energy saving, and because in a waterproof, anti-UV, etc. outstanding performance for a variety of application environments.
In addition, new product launch later further expand the scope of application, allowing outdoor products onto the pitch from the P16 P20. Black and white inside the product itself, in both the case of contrast, as the internal white, its reflective better, higher brightness. Improve the brightness, contrast, better off than before, the display will be more clear. To the greatest extent to meet people in the LED display visual enjoyment, to minimize light loss.
Liu introduced, outdoor products there are two ways, one is the traditional use of line lights, another trend is the use of SMD LED, SMD LED relatively light, the use of automatic machines to produce, consistency is very good uniformity, The product uses the same pitch SMD light to do a lot better than using the line.
Cree continuously improve product performance through technological innovation, improve product application range goal is to make our customers more successful.
Cree follow with the best technology to make the best products to allow customers to successfully win-win concept.
Promising field of LED display
Development trends of the LED display field, Liu also expressed their views, he said, LED highbay light field is very promising. From China Optics and Optoelectronics Manufactures Association, according to LED display applications Industry Association released last September in Nanjing, the National LED display applications industry report, China LED display applications scale development of the industry as a whole to maintain growth, 2011 annual industry sales reached 22 billion yuan market more than 19 billion yuan in 2010 increased by 16%. 2011 annual sales of over 40 billion enterprise, its annual sales totaled 10.6 billion yuan, accounting statistics 72% of the total sales, also accounted for about 50% of sales in the country. The above information indicates that the overall development of the LED display industry reached a certain size, the current growth rate has slowed, but still in the stage of continued growth. While the domestic industry scale enterprises rapidly growing and influential brand enterprises developed rapidly, forming a number of large scale enterprises, with a strong comprehensive strength. LED display applications will drive the capital markets industry entered a new development stage, the industry will be the backbone enterprises and listed companies under the auspices of the allocation of resources, restructuring and market adjustment factor. Core technology and brand will be a very important factor of two, LED display industry's future development will return to rational, brand, technology and other core elements of competition.
Meanwhile, the industry needs to strengthen cooperation and jointly create a favorable market environment for development, and continuously expand LED display applications industry overall space. Cree has been committed to technological innovation to meet market demand, providing customers with better performance and more cost-effective LED products, win-win cooperation with our customers.
Cree general manager of China Dr. Liu Erzhuang profile:
And Liu Zhuang (Erzhuang Liu) in April 2012, Dr. join Cree, currently General Manager of China, in charge of the mainland and Hong Kong production and sales. Previously, he has worked at Singapore's Chartered Semiconductor (Chartered Semiconductor), Shanghai Advanced Semiconductor (ASMC) and the Pan Lin semiconductor device research and development (Lam Research). Dr. Liu Erzhuang joined Chartered Semiconductor in 1993 as a senior research and development department is primarily responsible for Salicide process development and served as a series of engineering and operations management positions. In advanced semiconductor period, he served as director of operations; in the Pan Lin semiconductor tenure, he served as deputy general manager of China, leading the sales and technical team to develop and serve the Chinese market, with a wealth of sales experience.
Dr. Liu Erzhuang graduated from Xi'an Jiaotong University, semiconductor physics and devices, and Ph.D. from the University of British Dundee. He is also a postdoctoral fellow at Harvard University, and a Master of Business Administration from the National University of Singapore.

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