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A kind of LED phosphor formula and preparation method thereof

A technology of fluorescent powder and nitride fluorescent powder, which is applied in the field of lighting, can solve the problems of general color restoration, dim color, and poor high luminous efficacy of restored objects, and achieve good eye protection effect

Active Publication Date: 2019-08-06
SOPHIA ENG DONGGUAN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The color rendering index of the traditional light-emitting diode LED phosphor coating generally can only reach 94%-96%, and the effect on restoring the color of the object is average. At present, the most common white light LED implementation method is the phosphor conversion type (pc-LED). For example, a white LE (yellow + blue) white LE coated with a layer of yellow phosphor on the surface of the blue LED chip, such an LED light source is generally more harmful to the blue light, which is more harmful to the glasses. If it is too concentrated, it will lead to poor efficacy of high light and dull color

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A LED fluorescent powder formula, characterized in that it is formed by mixing A fluorescent agent and B fluorescent agent, and the A fluorescent agent includes halochromous phosphorous powder, gallium chromous fluorescent powder, silicon epoxy resin A agent and nitrogen Compound phosphor, the B phosphor includes silicone epoxy resin B agent, diffusion powder, aluminate phosphor, silicate phosphor and 6% hydrogen peroxide solution, the A phosphor and B phosphor consist of two The weight ratio of parts is 1:09~1.2, in parts by weight, the formula of the parts of fluorescent agent A is composed of: 8-10 parts of halide chromous phosphor powder, 8-10 parts of gallium chromous phosphor powder, Silicone epoxy resin A agent 20-25 parts and nitride fluorescent powder 20-25 parts, the formula of B fluorescent agent part is composed of: 6% hydrogen peroxide solution 50-70 parts, silicon epoxy resin B agent 5-8 5-8 parts, 5-8 parts of aluminate phosphor, 5-8 parts of silicate pho...

Embodiment 2

[0019] The weight ratio of the two components of fluorescent agent A and fluorescent agent B is 0.8:1-1.4, in parts by weight, the formula of fluorescent agent A is composed of: 5-8 halide chromous phosphors 5-8 parts, 5-8 parts of gallium chromous phosphor powder, 15-20 parts of silicon epoxy resin A agent and 15-20 parts of nitride phosphor powder. 90 parts, silicone epoxy resin B agent 8-10 parts, aluminate phosphor powder 8-10 parts, silicate phosphor powder 8-10 parts and diffusion powder 25-30 parts.

[0020] Through the weight ratio of 0.8:1 to 1.4, the amount of A phosphor used is reduced, thereby reducing the proportion of metal phosphors such as halochrome phosphor, gallium chromite phosphor, and nitride phosphor, so that LED When illuminated by low color temperature light sources, it is more vivid, which is different from the dim color of LED illumination in the past, and reduces the blue light hazard level to 0, which is more eye-friendly.

Embodiment 3

[0022] The weight ratio of the two components of the fluorescent agent A and the fluorescent agent B is 1:1. In terms of parts by weight, the formula of the fluorescent agent A is composed of: 9 parts of halogenated chromous phosphor, 9 parts of gallium 9 parts of chromium phosphor, 23 parts of silicon epoxy resin agent A and 23 parts of nitride phosphor powder. 7 parts of aluminate phosphor, 7 parts of silicate phosphor and 23 parts of diffusing powder.

[0023] Through the weight ratio of 1:1, the ratio of A fluorescent agent and B fluorescent agent is equal to each other, so that the diffusion powder can fully adjust the metal element fluorescent agent, so that the LED dispersion spectrum is closer to the sunlight spectrum, reducing the Damage to glasses.

[0024] Embodiment 1, Embodiment 2 and Embodiment 3 all adopt the same preparation method, and its preparation method process includes: (1) After fully mixing and stirring the halogenated chromous phosphor powder, silico...

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Abstract

The invention discloses an LED fluorescent powder formula, which is characterized in that the LED fluorescent powder formula is formed by mixing a fluorescent agent A and a fluorescent agent B, wherein the fluorescent agent A comprises chromous halide fluorescent powder, chromous gallide fluorescent powder, a silicon epoxy resin agent A and nitride fluorescent powder, the fluorescent agent B comprises a silicon epoxy resin agent B, diffusion powder, aluminate fluorescent powder, silicate fluorescent powder and a 6% hydrogen peroxide solution, components of the fluorescent agent A and the fluorescent agent B are in a weight proportion of 1:09-1.2, in parts by weight, and a formula of the fluorescent agent A comprises the following components in parts: 8 to 10 parts of chromous halide fluorescent powder, 8 to 10 parts of chromous gallide fluorescent powder, 20 to 25 parts of silicon epoxy resin agent A and 20 to 25 parts of nitride fluorescent powder. The LED fluorescent powder formula provided by the invention can improve the color rendering degree and high light efficiency, enhance the visual enjoyment degree, decrease the hazard level of blue light down to 0, has spectra closer tothe sunlight spectra, and has high temperature resistance and acid resistance.

Description

technical field [0001] The invention relates to the lighting field, in particular to an LED fluorescent powder formula and a preparation method thereof. Background technique [0002] The color rendering index of the traditional light-emitting diode LED phosphor coating generally can only reach 94%-96%, and the effect on restoring the color of the object is average. At present, the most common white light LED implementation method is the phosphor conversion type (pc-LED). For example, a white LE (yellow + blue) white LE coated with a layer of yellow phosphor on the surface of the blue LED chip, such an LED light source is generally more harmful to the blue light, which is more harmful to the glasses. If it is too concentrated, the high light effect will be poor and the color will be dull. Contents of the invention [0003] The purpose of the present invention is to provide a LED phosphor formulation and a preparation method thereof, so as to solve the problems raised in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L33/50C09K11/68
Inventor 杨坤
Owner SOPHIA ENG DONGGUAN LTD
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