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Fluorescent powder composition and white light-emitting device using same

A light-emitting device and phosphor powder technology, which is applied in the field of white light-emitting devices and phosphor powder compositions, can solve problems such as color temperature shift and white light brightness reduction, and achieve high-quality effects

Inactive Publication Date: 2012-11-28
EVERLIGHT ELECTRONICS (CHINA) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the silicate phosphor does not have the problem of energy saturation, it faces the problem of heat stability, that is, the brightness of the yellow light of the silicate phosphor will gradually decay when it is exposed to the high heat environment generated by the light-emitting diode for a long time ( decay), resulting in a decrease in white light brightness and a shift in color temperature

Method used

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  • Fluorescent powder composition and white light-emitting device using same
  • Fluorescent powder composition and white light-emitting device using same
  • Fluorescent powder composition and white light-emitting device using same

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Embodiment Construction

[0041] figure 1 A schematic cross-sectional view of a white light emitting device according to an embodiment of the present invention is shown. Please refer to figure 1 , the white light emitting device 100 includes a blue light emitting diode 101 , a reflective housing 103 and a conductive support 105 , the blue light emitting diode 101 is disposed inside the reflective housing 103 and is electrically connected to the conductive support by soldering wires 107 . The sealant layer 109 is filled into the reflective housing 103 and encapsulates the blue light emitting diode 101. A phosphor composition 111 is mixed in the sealant layer 109 and located on the blue light emitting diode 101. The phosphor composition 111 includes green, yellow And the orange phosphor powder is used to convert a part of the short-wavelength blue light emitted by the blue light-emitting diode 101 into long-wavelength visible light, which is then mixed with the rest of the blue light to form white light...

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Abstract

The invention provides a fluorescent powder composition and a white light-emitting device using the same. The white light-emitting device comprises a blue light LED and the fluorescent powder composition arranged on the blue light LED; and the fluorescent powder composition comprises a green scandium oxide, a yellow beta-silicon aluminum oxygen nitrogen compound and an orange alpha-silicon aluminum oxygen nitrogen compound, wherein the weight ratio of the green scandium oxide to the yellow beta-silicon aluminum oxygen nitrogen compound to the orange alpha-silicon aluminum oxygen nitrogen compound is 1:1:(0.3-0.425).

Description

technical field [0001] The present invention relates to a phosphor composition (Composition) and a white light-emitting device using the phosphor composition, and in particular to a phosphor composition with better light type, thermal stability and no energy saturation problems Objects and white light emitting devices. Background technique [0002] Based on the awareness of energy saving, carbon reduction and sustainable development, advanced countries in the world are phasing out traditional lighting with high energy consumption and choosing white light-emitting diodes. The advantage of the white light-emitting diode is that it is small in size, can be adjusted with the application equipment, and has a fast response speed, so it is very suitable for high-frequency operation. The power consumption of white light-emitting diodes is low, only 1 / 8 to 1 / 10 of traditional bulbs, and 1 / 2 of fluorescent lamps, and its long life can reach more than 100,000 hours, which can solve th...

Claims

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Application Information

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IPC IPC(8): C09K11/78C09K11/64H01L33/50
CPCY02B20/181Y02B20/00
Inventor 杨耀瑜刘宇桓
Owner EVERLIGHT ELECTRONICS (CHINA) CO LTD