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Fluorescent material coating method and substrate prepared by same

A technology of fluorescent material and coating method, applied in the field of substrate coated with fluorescent material, can solve the problems of uneven light mixing, inaccurate color temperature, irregular shape and size of fluorescent powder, etc., and achieve the effect of improving the refractive index

Active Publication Date: 2011-06-29
苏州铎力斯科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, due to the irregular shape and size of the phosphor powder in the LED component manufactured according to the above method, the phosphor layer is prone to problems such as inaccurate color temperature and uneven light mixing due to inconsistency in the material properties of the phosphor powder.

Method used

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  • Fluorescent material coating method and substrate prepared by same
  • Fluorescent material coating method and substrate prepared by same
  • Fluorescent material coating method and substrate prepared by same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Figure 2A to Figure 2F It is a schematic diagram of the steps of coating the fluorescent material on the surface of the substrate in Example 1 of the present invention.

[0031] Prepare Phosphor Solution

[0032] First, phosphor powder is taken as a phosphor material, wherein the spherical carrier of the phosphor powder is made of SiO with a particle size of 500nm 2nanospheres, while phosphors use Y particles with a particle size of about 30nm 2 o 3 :La 3+ , YAG: La 3+ And a mixture of CdSe:ZnS, and the phosphor is bonded to the surface of the spherical carrier through silane molecules (APTMS). By adjusting the ratio of various fluorescent powders, after being excited by the blue light-emitting diode, the fluorescent powder can mix light on its surface to emit white light.

[0033] Then, the phosphor powder 210 is mixed in the first solvent 211 with high dispersibility to obtain a phosphor powder mixed solution, such as Figure 2A shown. Here, ethanol is used...

Embodiment 2

[0046] The manufacturing method of this embodiment is as described in Embodiment 1. Wherein, the fluorescent powder used in this embodiment adopts a particle size of 500nm and a material of SiO 2 Nanospheres are used as spherical carriers, while phosphors use Y particles with a particle size of about 50nm 2 o 3 :Eu 3+ , Y 2 o 3 :yb 3+ , Y 2 o 3 : Ce 3+ 、YAG:Ce 3+ And a mixture of CdSe:ZnS, and the mixture of phosphors is contained inside the spherical carrier. In addition, the substrate to be coated in this embodiment is a sapphire substrate. Furthermore, the Al and Ti composite metal alkoxide solution was used as the sol-gel precursor solution, and the La 3+ the Y 2 o 3 Nitric acid solution, undergoing a sol-gel reaction to form a packed layer. Therefore, the filling layer of this embodiment contains Y 2 o 3 :La 3+ Al 2 o 3 -TiO 2 material layer.

Embodiment 3

[0048] The manufacturing method of this embodiment is as described in Embodiment 1. Wherein, the fluorescent powder used in this embodiment adopts a particle size of 1000nm and a material of SiO 2 The nanospheres are used as the spherical carrier, and the spherical carrier contains CdSe:ZnS quantum dots inside; while the phosphor body uses Y with a particle size of about 50nm 2 o 3 :La 3+ and YAG:La 3+ mixture, and the phosphor is bonded to the surface of the spherical carrier through silane molecules.

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Abstract

The invention relates to a fluorescent material coating method and a substrate prepared by the same. The fluorescent material coating method comprises the following steps of: (A) dispersing a fluorescent material in a first solvent to form fluorescent material solution; (B) filling the substrate in a container, injecting a second solvent in the container and covering the surface of the substrate by using the second solvent; (C) adding the fluorescent material solution into the second solvent to form a fluorescent material thin film on the surface of the second solvent; and (D) removing the second solvent from the container to form the fluorescent material thin film on the surface of the substrate.

Description

technical field [0001] The present invention relates to a fluorescent material coating method and the prepared substrate, in particular to a method for uniformly coating fluorescent material on the substrate, so as to obtain a fluorescent material coated with uniform properties and good refractive index. the substrate. Background technique [0002] In recent years, due to the advantages of high luminous efficiency, low power consumption, long service life, and small component size, light-emitting diodes (LEDs) have been widely used in various light-emitting devices and replaced several types of lighting equipment. [0003] However, it is difficult for LEDs to be used in the lighting market for people's livelihood. In addition to the problems of heat dissipation, insufficient brightness and diminishing brightness, LEDs also have the problem of not being able to directly stimulate white light. Therefore, many studies have attempted to develop high-efficiency white LEDs to rep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/00B05D7/24B05D3/00H01L33/50
Inventor 李威汉
Owner 苏州铎力斯科技有限公司
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