[Text / high-tech LED Gan Qin] Through the innovation of phosphor technology, improving the light efficiency of LED packaging devices, improving light color quality, reducing packaging cost is the eternal theme of LED phosphor technology development.
“With the rapid development of the LED industry, lighting products are undoubtedly moving towards high color rendering, while backlight products have placed higher demands on wide color gamut. LED phosphors will play a key role in achieving these trends.†Dr. Ma Xiaole from the Rare Earth Luminescence Division said at the 2015 Gaogong LED Annual Meeting.
In the field of lighting, Rare Earth has introduced aluminate yellow-green phosphors and nitride red phosphors with high light efficiency and color rendering properties. In the field of high-quality wide color gamut display, the company is the first to introduce high-performance fluoride red. Phosphors and development work on NOx green powder.
With the emphasis on quality on the application side, higher requirements are placed on the overall shape of the phosphor. Ma Xiaole said that the pheromized phosphor will usher in a good development. "Compared to conventional morphological phosphors, spheroidization The phosphor has a spherical shape, a rounded corner, and has the advantages of high light efficiency and good stability. It is easy to disperse in the encapsulant, especially in low-flow encapsulated silica gel. At present, the company has realized the nitride phosphor. The uniformity distribution of the particles."
In addition, Rare Earth Research is also working on the field of phosphors for full-spectrum lighting, and is constantly introducing new products.
In fact, although the concept of full-spectrum illumination has been proposed for a long time, there are still some difficulties in achieving full-spectrum illumination. Ma Xiaole said that in terms of spectrum, the color of the displayed object lacks the target in R12 and R9, but to achieve the full spectrum, The narrow definition requires the addition of saturated blue. The broad definition is to add blue, green and red phosphors, mainly excited by UV LED chips.
Ma Xiaole said, "In the field of full spectrum, the Rare Earth team has introduced a fluoride YAG green phosphor, which is a new type of phosphor that meets the solar spectrum and is very suitable for full spectrum."
In addition, for the field of LED backlights, there is a research plan for the development of rare earth aluminate yellow powder, the color gamut range is about 70% NTSC; the company also introduced a new beta-sialon products and fluoride red powder, has been applied to high-end liquid crystal displays In the field, the β-sialon product achieves an emission peak of 530-550 nm and a FWHM of 50-60 nm.
For the future development, Ma Xiaole said that with the emergence of new technologies, new processes and new application features in the field of LED lighting, the technological innovation of LED phosphors will not end. The company will continue to introduce new products, continuously reduce the cost of raw materials, and contribute to the domestic LED industry.
“With the rapid development of the LED industry, lighting products are undoubtedly moving towards high color rendering, while backlight products have placed higher demands on wide color gamut. LED phosphors will play a key role in achieving these trends.†Dr. Ma Xiaole from the Rare Earth Luminescence Division said at the 2015 Gaogong LED Annual Meeting.
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In the field of lighting, Rare Earth has introduced aluminate yellow-green phosphors and nitride red phosphors with high light efficiency and color rendering properties. In the field of high-quality wide color gamut display, the company is the first to introduce high-performance fluoride red. Phosphors and development work on NOx green powder.
With the emphasis on quality on the application side, higher requirements are placed on the overall shape of the phosphor. Ma Xiaole said that the pheromized phosphor will usher in a good development. "Compared to conventional morphological phosphors, spheroidization The phosphor has a spherical shape, a rounded corner, and has the advantages of high light efficiency and good stability. It is easy to disperse in the encapsulant, especially in low-flow encapsulated silica gel. At present, the company has realized the nitride phosphor. The uniformity distribution of the particles."
In addition, Rare Earth Research is also working on the field of phosphors for full-spectrum lighting, and is constantly introducing new products.
In fact, although the concept of full-spectrum illumination has been proposed for a long time, there are still some difficulties in achieving full-spectrum illumination. Ma Xiaole said that in terms of spectrum, the color of the displayed object lacks the target in R12 and R9, but to achieve the full spectrum, The narrow definition requires the addition of saturated blue. The broad definition is to add blue, green and red phosphors, mainly excited by UV LED chips.
Ma Xiaole said, "In the field of full spectrum, the Rare Earth team has introduced a fluoride YAG green phosphor, which is a new type of phosphor that meets the solar spectrum and is very suitable for full spectrum."
In addition, for the field of LED backlights, there is a research plan for the development of rare earth aluminate yellow powder, the color gamut range is about 70% NTSC; the company also introduced a new beta-sialon products and fluoride red powder, has been applied to high-end liquid crystal displays In the field, the β-sialon product achieves an emission peak of 530-550 nm and a FWHM of 50-60 nm.
For the future development, Ma Xiaole said that with the emergence of new technologies, new processes and new application features in the field of LED lighting, the technological innovation of LED phosphors will not end. The company will continue to introduce new products, continuously reduce the cost of raw materials, and contribute to the domestic LED industry.
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