[High-tech LED reporter Zhu Chunwei] On November 26th, in the third session of the CTO conference held in conjunction with the 2013 Gaogong LED Lighting Exhibition, the title of the photovoltaics was held: the packaged devices, equipment and materials II were held in Hall 5, Guangzhou Poly World Trade Center. The meeting was hosted by Dr. Jin Peng, a professor at Peking University Shenzhen Graduate School. With the gradual expansion of LEDs in commercial lighting, small and medium-sized panel backlights, etc., the market demand for high-brightness LEDs has been in a high-speed growth stage in recent years. At the same time, the rise of market demand for COB and integrated modular packaging emerging products has led to a significant increase in overall sales of the phosphor powder market this year.

The topic of the lectures brought by senior engineers of Rare Earth in the summer is “The rapid development of LED phosphor 'light quality”: from the development of phosphors in the field of illumination; the development in the field of phosphor display; the direction of rapid development of phosphors in the future .

Research rare earth senior engineer summer



In fact, starting from the patent that Nichia Chemical declared blue LED chip coated YAG yellow phosphor to form white light in 1966, YAG yellow phosphor has been the mainstream technical solution for commercial white LED, but the bottleneck of low color rendering index makes single The YAG yellow powder program has not been able to meet the requirements of the current lighting market.

"High-color white LED has become an inevitable trend in the future development. The transformation of a single YAG yellow powder is imperative." Summer said that international manufacturers and many domestic packaging manufacturers have gradually begun to try other types of phosphors, such as LuAG.

Among them, nitride red powder will play an increasingly important role. From a technical point of view, the current nitride red powder is recognized as a practical system, and it is also one of the important factors affecting the expansion of white LEDs into indoor general lighting applications. There is no doubt that it has very important market value and broad market space.

Summer said that after three years of hard work, in 2011, the market share of rare earths has been ranked among the top domestic LED phosphors. The company's products already cover yellow, green and red full-band phosphors. The main compound system is aluminate and nitrogen. Compounds, of which more than ten kinds of aluminate yellow green powder and more than ten kinds of nitride red powder can be effectively combined and matched according to relevant laws, which can fully meet the market demand of high color rendering and high brightness white LED.

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