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A full-spectrum LED phosphor composition and high color rendering white LED lamp

A technology of LED lamps and phosphors, applied in the field of lighting, can solve the problems of high color temperature, unsuitable for home lighting LEDs, phosphors or their combination with low color rendering index, achieve good color rendering, improve work and study efficiency, Good consistency of powder spectral attenuation

Active Publication Date: 2018-10-02
HEBEI LIFU CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a full-spectrum LED phosphor composition and a high-color-rendering white LED lamp to solve the problem that the phosphor powder used in the prior art or its combination has low color rendering index and high color temperature, and is not suitable for home lighting LEDs. The problem

Method used

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  • A full-spectrum LED phosphor composition and high color rendering white LED lamp
  • A full-spectrum LED phosphor composition and high color rendering white LED lamp
  • A full-spectrum LED phosphor composition and high color rendering white LED lamp

Examples

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Effect test

Embodiment 1

[0033]Blu-ray chip + full-spectrum phosphor composition: 2700K color temperature

[0034] A full-spectrum phosphor composition with a color temperature of 2700K, comprising the following components in mass percent: an improved green phosphor (Lu, Y) with an emission peak at 525nm under blue light excitation 3 (Al,Ga) 5 o 12 : Ce: 79.2%, red phosphor SrLiAl with emission peak at 650nm under blue light excitation 3 N 4 :Eu: 20.8%. The matching Blu-ray chip wavelength is: 450nm-452.5nm. The emission spectrum of the obtained product is shown in figure 2 shown.

Embodiment 2

[0036] Blu-ray chip + full-spectrum phosphor composition: 3000K color temperature

[0037] A full-spectrum phosphor composition with a color temperature of 3000K, comprising the following components in mass percent: an improved green phosphor (Lu, Y) with an emission peak at 515nm under blue light excitation 3 (Al,Ga) 5 o 12 : Ce: 78.0%, red phosphor SrLiAl with emission peak at 650nm under blue light excitation 3 N 4 :Eu: 22.0%. The matching Blu-ray chip wavelength is: 450nm-452.5nm.

Embodiment 3

[0039] Blu-ray chip + full-spectrum phosphor composition: 4000K color temperature

[0040] A full-spectrum phosphor composition with a color temperature of 4000K, comprising the following components in mass percent: an improved green phosphor (Lu, Y) with an emission peak at 520nm under blue light excitation 3 (Al,Ga) 5 o 12 : Ce: 81.3%, red phosphor SrLiAl with emission peak at 650nm under blue light excitation 3 N 4 :Eu: 18.7%. The matching Blu-ray chip wavelength is: 450nm-452.5nm.

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Abstract

The invention discloses a full spectrum LED phosphor composition and a high color white light LED lamp. The composition comprises 78% to 88% of green phosphor with the emission peak of 500 nm to 550 nm under blue light excitation and 12% to 22% of red phosphor with the emission peak of 625 nm to 670 nm under blue light excitation, the phosphor composition has a general color rendering index larger than 95 under CCT of about 2700K to 6000K has a full spectrum close to natural light, the package of 2700K to 6000K color temperature can be realized, the yield is high, and the phosphor composition can be widely applied to an occasion with a strict color discrimination requirement such as lighting, printing and dyeing, jewelry, and cosmetics.

Description

technical field [0001] The invention relates to the technical field of lighting, in particular to a full-spectrum LED fluorescent powder composition and a high-color-rendering white LED lamp. Background technique [0002] 15 standard color samples are stipulated internationally, and a wider CRI (R1-R15) can be calculated from their average value, but CRI is usually defined as the average value of 8 standard color samples (R1-R8), which is usually called As a general color rendering index, and abbreviated as Ra. In particular, the color rendering of R9 saturated red is very important for a certain range of applications. [0003] At present, the mainstream white light LED uses InGaN blue light chips to excite YAG:Ce 3+ Phosphor powder produces yellow light complementary to blue light, which is then mixed to achieve. However, since YAG:Ce 3+ In phosphors, the spectral energy of red light accounts for about 8-15% of the total spectral energy, which is much lower than the pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50C09K11/64F21V1/17F21V9/02
CPCC09K11/64F21V9/30H01L33/502Y02B20/00
Inventor 杨志平路亚娟蒋双双刘学千赵金鑫
Owner HEBEI LIFU CHEM TECH
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