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Phosphor member, method for producing phosphor member, and lighting device

A technology for lighting devices and phosphors, applied in semiconductor devices, chemical instruments and methods, luminescent materials, etc., can solve the problems of yellowing or coloring of the coating resin, decrease in export efficiency, and increase in operating procedures, and achieve uneven color and Effects of reduced light intensity unevenness, improved durability and color rendering, and improved yield and yield

Inactive Publication Date: 2012-02-22
KONICA MINOLTA OPTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In this way, since usable phosphors are limited to specific types, there is a problem of insufficient color rendering (color rendering)
[0008] The second problem is that the ultraviolet components generated by the LED chip will cause deterioration of the coating resin (protective resin, sealing resin) and phosphor
In addition, when using an ultraviolet absorber, it will lead to the increase of additional materials and operation processes, so there is a difficulty in increasing the product price
Therefore, there is a problem in that sufficiently excellent environmental resistance, mainly moisture resistance, cannot be obtained.
[0009] The third problem is that the light irradiated by the light-emitting diode chip will be attenuated when passing through the coating resin due to the yellowing or coloring of the coating resin with low heat resistance.
There is a problem that it is difficult to uniformly disperse phosphor particles in such a resin sheet, resulting in uneven distribution of phosphor particles; or, in the case of aggregation, light emitted to the outside due to light scattering The derivation efficiency (take り out し efficiency) decreases; or, the color rendering property decreases due to local differences in the derivation efficiency of light

Method used

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  • Phosphor member, method for producing phosphor member, and lighting device
  • Phosphor member, method for producing phosphor member, and lighting device
  • Phosphor member, method for producing phosphor member, and lighting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0173] 400 g of pure water was added to a 1 L stainless steel tank, and 600 g of silicon oxide 1 (trade name: SFP-30M manufactured by Denki Kagaku Kogyo Co., Ltd.) was added over 5 minutes at 6000 rpm using ULTRA-TURRAX T25Digital (manufactured by IKA Corporation) Average particle diameter: 700 nm ), followed by a 30-minute dispersion.

[0174] Next, add 1000g of methyl ethyl ketone, make the temperature of the warm bath 40°C, and use an evaporator to remove the solvent three times under a reduced pressure of 26.6kPa, so that the residual amount reaches 800g, and finally add 200g of methyl ethyl ketone, so that the total mass reaches 1000g , thus obtaining Dispersion-1.

[0175] Then, in 100 parts by mass of ethanol, tetraethoxysilane (Si(C 2 h 5 O) 4 ) 20 parts by mass and phenyltriethoxysilane (C 6 h 5 Si(OC 2 h 5 ) 3 ) 80 parts by mass, reacted with formic acid as a catalyst, and obtained an acidic solution.

[0176] Then, using triethylamine ((C 2 h 5 ) 3 N) ne...

Embodiment 2

[0179] A sample of Example 2 was prepared in the same manner as in the sample preparation of Example 1 above, except that the following Dispersion Liquid-2 was used instead of Dispersion Liquid-1.

[0180]

[0181] In addition to using silicon oxide 2 (trade name: SFP-20M, manufactured by Denki Kagaku Kogyo Co., Ltd. Particle size: 300 nm) in the preparation of the above dispersion-1 instead of silica 1 (trade name: SFP-30M, manufactured by Denki Kagaku Kogyo Co., Ltd.) Dispersion-2 was prepared in the same manner except particle size: 700 nm).

Embodiment 3

[0183] A sample of Example 3 was prepared in the same manner as in the sample preparation of Example 1 above, except that the following Dispersion Liquid-3 was used instead of Dispersion Liquid-1.

[0184]

[0185] In addition to using silicon oxide 3 (trade name manufactured by Corefront Co., Ltd.: sicastar particle size: 70 nm) in the preparation of the above-mentioned dispersion liquid-1 instead of silicon oxide 1 (trade name manufactured by Denki Kagaku Kogyo Co., Ltd.: SFP-30M) Average particle size: 700 nm ), Dispersion-3 was prepared in the same manner.

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Abstract

Disclosed are: a phosphor member which can reduce color variation and light-intensity variation, improve environmental tolerance, heat resistance, durability and color rendering, and increase yield and retention; a method for producing the phosphor member; and a lighting device. This phosphor member, which is produced separately from an LED light source constituting a white lighting device, is characterized by comprising phosphor particles and an inorganic layer obtained by coating and heating treatments.

Description

technical field [0001] The present invention relates to a phosphor component, a manufacturing method of the phosphor component, and a lighting device using the phosphor component, in particular, to an LED light source that is manufactured separately from a white lighting device and is used to absorb part of the light emitted by the LED chip and transmit it through wavelengths. Phosphor member that converts to emit light, its manufacturing method, and lighting device using the phosphor member. Background technique [0002] In recent years, LED chips that can emit blue light or ultraviolet light through gallium nitride-based compound semiconductors have been developed. Attempts have been made to develop an LED light-emitting device that can emit light including white and a color tone different from that of the chip by combining the LED chip with various phosphors. The LED light-emitting device has the advantages of small size, light weight, and energy saving, and has been wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/00C09K11/02H01L33/50
CPCH01L33/08H01L33/505H01L2933/0041C09K11/02C09K11/7774
Inventor 本田美佳
Owner KONICA MINOLTA OPTO
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