Production method for wavelength conversion members

A wavelength conversion and manufacturing method technology, which is applied in chemical instruments and methods, electrical components, semiconductor devices, etc., can solve the problems of poor water resistance of resin, deterioration of inorganic nano-fluorescent particles, and discoloration of resin, so as to suppress heat energy and heat deterioration , Promote the effect of softening flow

Inactive Publication Date: 2018-06-08
NIPPON ELECTRIC GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a resin is used as a sealing material, there is a problem that the resin will be discolored due to the heat generated from the inorganic nano phosphor particles due to the irradiation of excitation light.
In addition, the water resistance of the resin is poor, and it is easy to permeate water, so there is a problem that the inorganic nano phosphor particles are easy to deteriorate over time.

Method used

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  • Production method for wavelength conversion members
  • Production method for wavelength conversion members

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] Using SnO, SnF 2 ,P 2 o 5 As a raw material, contains Sn in terms of cationic % 2+ 56.3%, P 5+ 43.8%, containing F in terms of anion % － 24.8%, O 2－ The batch prepared in the 75.2% manner was put into a quartz beaker, and melted at 680° C. for 5 minutes in an electric furnace set as a nitrogen atmosphere. The obtained molten glass was molded into an ingot shape, and it pulverized with a mortar to obtain a glass powder (average particle diameter=25 μm, yield point=150° C.).

[0076] With respect to 1 g of glass powder, 100 μl of a dispersion obtained by dispersing inorganic nano phosphor particles (CdSe / ZnS, average particle diameter = about 3 nm) in hexane as a dispersion medium at a concentration of 1% by mass was added and mixed, Thereafter, vacuum drying was performed at 30° C. for 20 minutes, thereby obtaining a mixture of glass powder and inorganic nano phosphor particles.

[0077] The obtained mixture was placed on the lower die of a tungsten carbide press ...

Embodiment 2

[0080] A wavelength conversion member was fabricated in the same manner as in Example 1 except that the preheating and hot pressing temperatures were set at 180°C. The light emission quantum efficiency of the obtained wavelength conversion member was measured to be 38%.

Embodiment 3

[0082] A wavelength conversion member was produced in the same manner as in Example 1 except that the preheating and hot pressing temperatures were set to 200°C. The light emission quantum efficiency of the obtained wavelength conversion member was measured to be 30%.

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Abstract

Provided is a production method for wavelength conversion members that can limit the thermal degradation of inorganic fluorescent nanoparticles. The production method for wavelength conversion membersis characterized in that a mixture 1 comprising a glass powder and inorganic fluorescent nanoparticles is sintered by means of hot-pressing using a mold 2.

Description

technical field [0001] The present invention relates to a method of manufacturing a wavelength converting member using inorganic nano phosphor particles. Background technique [0002] In recent years, a light-emitting device has been studied that uses excitation light sources such as light-emitting diodes (LEDs) and semiconductor lasers (LDs), and uses, as illumination light, fluorescence generated by irradiating a phosphor with the excitation light generated by these excitation light sources. In addition, the use of inorganic nano-phosphor particles such as quantum dots as the phosphor has been studied. Quantum dots can adjust the fluorescence wavelength by changing their diameters, and have high luminous efficiency (for example, refer to Patent Documents 1 to 3). [0003] Inorganic nano phosphor particles have a property that they are easily deteriorated when they come into contact with moisture or oxygen in the atmosphere. Therefore, the inorganic nano phosphor particle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L33/50C03C12/00C09K11/00C09K11/08
Inventor 安东民雄古山忠仁藤田俊辅
Owner NIPPON ELECTRIC GLASS CO LTD
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