[Source: LED Engineering's "good LED products," May issue of the magazine reporter / He Jing] benefit from the downstream backlight, lighting market demand growth, 2012 COB, integrated modular packages more and more mature, a substantial increase in sales . These new packaging formats have increased the amount of phosphors used in much more than traditional packaging formats, resulting in a rapid increase in phosphor sales in 2012. In addition, customized special colors and special products are increasingly demanding phosphors.
However, in 2012, the development status of China's LED phosphors is basically consistent with the situation of China's LED packaging industry, and the increase is not profitable. According to the data of the High-tech LED Industry Research Institute (GLII), the sales volume of LED phosphors in the Chinese market increased by 70% in 2012, and sales only increased by 23%. The main reason is that the price of phosphors has dropped rapidly, resulting in a general increase in enterprises. No increase in profits.
“In 2013, the packaging and application markets generally reflected a significant recovery, and the phosphor market began to pick up in March.†Senior researcher of Rare Earth New Materials Co., Ltd. (hereinafter referred to as Rare Earth Research) said that the rare earth is a Chinese local LED. Representative companies of phosphors, although starting late, have seen a rapid increase in market share in the past two years. In 2012, sales increased by more than 70%, and the monthly shipments reached 700-800 kg.
Single YAG yellow powder transformation
Since 1966 Nichia's patent for blue LED chip coating YAG yellow phosphor to form white light, it has been the mainstream technical solution for commercial white LED. YAG phosphors have excellent luminescence properties and good reliability, and are the main varieties of yellow phosphor applications. Due to the low color rendering index of YAG phosphors used alone in the field of LED lighting, the single YAG yellow powder solution has been unable 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 single YAG yellow powder is imperative.†Summer indicates that YAG can only reach 60 or so under warm white light conditions, even under positive white conditions. The index can reach more than 70, but it is still difficult to meet the requirements of general lighting. At present, international manufacturers and many domestic packaging manufacturers have gradually begun to transform to other color phosphor types, such as LuAG.
In the field of LED backlight display, the trend of replacing the original silicate green powder with LuAG phosphor has been fixed, especially in the high-end backlight display device. In the middle and low end, it is also possible to use LuAG phosphor instead of the existing silicic acid. The strong voice of salt phosphors.
LuAG phosphors have high luminosity in the field of LED illumination and are the main varieties of yellow-green and green phosphors. They have improved YAG's long-term failure to achieve lower green wavelengths and lower brightness at green wavelengths. The problem. LuAG is especially suitable for combination with red powder, which can meet the huge demand of high-color, high-brightness white LED, and has good reliability. It can solve the problem of brightness attenuation and color drift of silicate green phosphor. . In the summer, it was revealed that Rare Earth recently introduced a new model of LuAG yellow green powder, which can achieve high brightness and high color rendering index of white LED with high-temperature, high-humidity nitride red powder.
Profit point turned to aluminate, nitride phosphor
"In the process of the gradual popularization of LED lighting, nitride red powder will play an increasingly important role." Summer said that from the technical point of view, nitride red powder is recognized as a practical system, and it also affects the general illumination of white LEDs indoors. One of the important factors in application development has undoubtedly very important market value and broad market space.
In the research of rare earth in the realization of high color rendering white LED, as early as October 2011, the layout of the rare earth LED phosphor products covers yellow, green and red all-band, the main compound system is aluminate and nitride; A total of 8 aluminate yellow-green powder/green powder and 9 nitride red powders were produced to meet the market demand for high-color white light.
In terms of technical solutions for improving high color rendering, there are mainly two kinds, one is to use green powder and orange powder to match, so that the color rendering index can reach 80~85, which is also the main promotion plan of Taiwan Hongdae in mainland China this year. . However, the shortcomings of this scheme are also obvious, mainly including low brightness, low R9 value, and poor stability; the other is to use nitride red powder and yellow green powder to match, which can achieve high brightness, Suitable for white LED products with good R9 value and stability.
“Therefore, the use of nitride red powder and yellow green powder is the mainstream solution for the development of the color rendering index 80-85 in the future.†Summer said that this means that the market for red powder will show a substantial increase. As for YAG yellow powder, it is expected to be used in recent years. There will still be growth, but the increase will be smaller.
Unfinished , please refer to the May issue of Gaogong LED 's " LED Good Products" magazine.
However, in 2012, the development status of China's LED phosphors is basically consistent with the situation of China's LED packaging industry, and the increase is not profitable. According to the data of the High-tech LED Industry Research Institute (GLII), the sales volume of LED phosphors in the Chinese market increased by 70% in 2012, and sales only increased by 23%. The main reason is that the price of phosphors has dropped rapidly, resulting in a general increase in enterprises. No increase in profits.
“In 2013, the packaging and application markets generally reflected a significant recovery, and the phosphor market began to pick up in March.†Senior researcher of Rare Earth New Materials Co., Ltd. (hereinafter referred to as Rare Earth Research) said that the rare earth is a Chinese local LED. Representative companies of phosphors, although starting late, have seen a rapid increase in market share in the past two years. In 2012, sales increased by more than 70%, and the monthly shipments reached 700-800 kg.
Single YAG yellow powder transformation
Since 1966 Nichia's patent for blue LED chip coating YAG yellow phosphor to form white light, it has been the mainstream technical solution for commercial white LED. YAG phosphors have excellent luminescence properties and good reliability, and are the main varieties of yellow phosphor applications. Due to the low color rendering index of YAG phosphors used alone in the field of LED lighting, the single YAG yellow powder solution has been unable 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 single YAG yellow powder is imperative.†Summer indicates that YAG can only reach 60 or so under warm white light conditions, even under positive white conditions. The index can reach more than 70, but it is still difficult to meet the requirements of general lighting. At present, international manufacturers and many domestic packaging manufacturers have gradually begun to transform to other color phosphor types, such as LuAG.
In the field of LED backlight display, the trend of replacing the original silicate green powder with LuAG phosphor has been fixed, especially in the high-end backlight display device. In the middle and low end, it is also possible to use LuAG phosphor instead of the existing silicic acid. The strong voice of salt phosphors.
LuAG phosphors have high luminosity in the field of LED illumination and are the main varieties of yellow-green and green phosphors. They have improved YAG's long-term failure to achieve lower green wavelengths and lower brightness at green wavelengths. The problem. LuAG is especially suitable for combination with red powder, which can meet the huge demand of high-color, high-brightness white LED, and has good reliability. It can solve the problem of brightness attenuation and color drift of silicate green phosphor. . In the summer, it was revealed that Rare Earth recently introduced a new model of LuAG yellow green powder, which can achieve high brightness and high color rendering index of white LED with high-temperature, high-humidity nitride red powder.
Profit point turned to aluminate, nitride phosphor
"In the process of the gradual popularization of LED lighting, nitride red powder will play an increasingly important role." Summer said that from the technical point of view, nitride red powder is recognized as a practical system, and it also affects the general illumination of white LEDs indoors. One of the important factors in application development has undoubtedly very important market value and broad market space.
In the research of rare earth in the realization of high color rendering white LED, as early as October 2011, the layout of the rare earth LED phosphor products covers yellow, green and red all-band, the main compound system is aluminate and nitride; A total of 8 aluminate yellow-green powder/green powder and 9 nitride red powders were produced to meet the market demand for high-color white light.
In terms of technical solutions for improving high color rendering, there are mainly two kinds, one is to use green powder and orange powder to match, so that the color rendering index can reach 80~85, which is also the main promotion plan of Taiwan Hongdae in mainland China this year. . However, the shortcomings of this scheme are also obvious, mainly including low brightness, low R9 value, and poor stability; the other is to use nitride red powder and yellow green powder to match, which can achieve high brightness, Suitable for white LED products with good R9 value and stability.
“Therefore, the use of nitride red powder and yellow green powder is the mainstream solution for the development of the color rendering index 80-85 in the future.†Summer said that this means that the market for red powder will show a substantial increase. As for YAG yellow powder, it is expected to be used in recent years. There will still be growth, but the increase will be smaller.
Unfinished , please refer to the May issue of Gaogong LED 's " LED Good Products" magazine.
We offer rechargeable li ion and Lipo Battery cells from industry's leading manufacturers, Panasonic cells, Sanyo cells, Moli cell, ATL cells, BAK cells, DLG cells, HYB cells, Samsung cells, LG cells, Maxell Cells. With contacts inside big manufacturers, we are able to supply authentic cells in wide variations of sizes, capacities, and power performances to meet your needs. In addtion we provide processing service to add proteced PCB in cell, to put heat shrink tubes, wires with designated connector, or to design unique plastic case with coaxial DC port.
Rechargeable Batteries,Rechargeable Lithium Batteries,Rechargeable Cell,Lithium Ion Rechargeable Batteries
Asarke Industry Co., Limited , https://www.asarke-industry.com