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Double-layer structure remote phosphor, preparation method thereof and remote LED device

A long-range phosphor, double-layer structure technology, applied in semiconductor devices, electrical components, circuits, etc., can solve the problems of lack of red light components, low color rendering index, unsatisfactory, etc., to improve light output and luminous efficiency, preparation Simple process and improved light efficiency

Active Publication Date: 2016-10-26
福建省德化县腾兴陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the emission spectrum of this fluorescent material lacks red light components, and the corresponding device has a high color temperature (6674K) and a low color rendering index (70), which cannot meet the needs of indoor lighting applications.

Method used

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  • Double-layer structure remote phosphor, preparation method thereof and remote LED device
  • Double-layer structure remote phosphor, preparation method thereof and remote LED device
  • Double-layer structure remote phosphor, preparation method thereof and remote LED device

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preparation example Construction

[0032] refer to figure 1 , 2 As shown, a method for preparing a remote phosphor with a double-layer structure includes the following steps:

[0033] Step 1, preparing glass-ceramic inlaid with YAG:Ce yellow phosphor;

[0034] Step 2, preparing silica gel containing CASN:Eu red phosphor, mixing CASN:Eu red phosphor and silica gel in a certain proportion and stirring evenly, and then removing air bubbles in a vacuum environment;

[0035] Step 3, coating the fluorescent powder silica gel mixed with red phosphor powder prepared in step 2 on the surface of the glass-ceramics prepared in step 1, then moving it into a drying oven, and curing it at a temperature of 100-200°C 1- After 4 hours of molding, the desired double-layer phosphor was obtained.

[0036] refer to image 3 As shown, a remote LED device with a double-layered remote phosphor includes a housing, a light-emitting chip and a remote phosphor, the light-emitting chip is a blue chip, and the blue chip is arranged on a...

specific Embodiment 1

[0037] refer to Figure 1 to Figure 4 As shown, the remote LED device having a remote phosphor with a double-layer structure includes a housing 100, a light-emitting chip 200 and a remote phosphor 300. The light-emitting chip 100 is a nano-blue chip. Under the excitation of 460 nm blue light, the double-layer structure Phosphor 300 emits yellow light and red light. The combination of yellow light, red light and chip blue light produces bright warm white light. Figure 4 , the chromaticity coordinates are (0.3490, 0.3845), the color temperature is 4959K, the color rendering index is 69.8, and the light efficacy is 109.4 lumens / watt.

[0038] Wherein the remote phosphor 300 is prepared using the following method:

[0039] Step 1, preparing glass-ceramics inlaid with YAG:Ce yellow phosphor powder,

[0040] 1.1 will analyze pure SiO 2 , TeO 2 , ZnO, Na 2 CO 3 、GeO 2 、H 3 BO 3 , BaO, TiO 2 Powder raw material, according to 26SiO 2 -24TeO 2 -17ZnO-6Na 2 CO 3 -12GeO 2 -1...

specific Embodiment 2

[0046] refer to figure 2 , image 3 As shown, the remote LED device having a remote phosphor with a double-layer structure includes a housing 100, a light-emitting chip 200 and a remote phosphor 300. The light-emitting chip 100 is a nano-blue chip. Under the excitation of 460 nm blue light, the double-layer structure Phosphor 300 emits yellow light and red light, and the combination of yellow light, red light and chip blue light produces bright warm white light with chromaticity coordinates of (0.3635, 0.3888), color temperature of 4519K, color rendering index of 71.9, and luminous efficacy of 105.0 lumens / watt.

[0047] The remote phosphor 300 described above was prepared using the following method:

[0048] Step 1, preparing glass-ceramics inlaid with YAG:Ce yellow phosphor powder,

[0049] 1.1 will analyze pure SiO 2 , TeO 2 , ZnO, Na 2 CO 3 、GeO 2 、H 3 BO 3 , BaO, TiO 2 Powder raw material, according to 24SiO 2 -24TeO 2 -17ZnO-7Na 2 CO 3 -12GeO 2 -10H 3 ...

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Abstract

The present invention relates to the technical field of white LED lighting, especially to a double-layer structure remote phosphor, the preparation method thereof and a remote LED device with the same. The double-layer structure remote phosphor comprises microcrystalline glass inlayed by YAG: Ce yellow fluorescent powder. The surface of the microcrystalline glass inlayed by YAG: Ce yellow fluorescent powder is covered with a layer of silica gel containing CASN:Eu red fluorescent powder. The double-layer structure remote phosphor are uniformly inlayed by YAG:Ce yellow phosphor and CASN:Eu red fluorescent powder in the substrate glass and silica gel. The silica gel layer surface is smooth, and is closely integrated with the microcrystalline glass layer. The remote phosphor preparation technology is simple and cost-effective. Not toxic and pollution free, the remote phosphor has good thermal and chemical stability. When the remote phosphor is applied to construct a remote LED device, bright warm light can be radiated when the device is electrically connected.

Description

technical field [0001] The invention relates to the technical field of LED white light lighting, in particular to a double-layer structure remote phosphor, a preparation method and a remote LED device with the double-layer structure phosphor. Background technique [0002] As the fourth-generation solid-state lighting source, white LEDs have the advantages of high efficiency, energy saving, environmental protection, and long service life, and have penetrated into various fields of general lighting. Because of its significant economic and social benefits, countries all over the world have incorporated it into their national strategic plans. [0003] At present, the packaging method of the mainstream white light LED is to directly coat the silica gel mixed with YAG:Ce yellow phosphor powder on the blue GaN chip by dispensing process, and then heat and solidify it into shape. As we all know, LED light sources also generate a lot of heat while emitting light, especially for high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50H01L33/64
CPCH01L33/504H01L33/507H01L33/64H01L2933/0041H01L2933/0075
Inventor 林泽斌陈文耀
Owner 福建省德化县腾兴陶瓷有限公司
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