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Composition containing quantum dot fluorescent body, molded body of quantum dot fluorescent body dispersion resin, structure containing quantum dot fluorescent body, light-emitting device, electronic apparatus, mechanical device, and method for producing the molded body of a quantum dot fluorescent body dispersion resin

A technology for quantum dot phosphors and dispersion resins, which are applied to compositions comprising quantum dot phosphors, quantum dot phosphor-dispersed resin moldings, structures comprising quantum dot phosphors, light-emitting devices, electronic equipment, mechanical devices and The field of manufacturing quantum dot phosphor-dispersed resin moldings to achieve the effect of suppressing extinction

Active Publication Date: 2013-09-25
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, electrons are quantum-confined in well-defined, three-dimensional, and nanoscale-large semiconductor crystals

Method used

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  • Composition containing quantum dot fluorescent body, molded body of quantum dot fluorescent body dispersion resin, structure containing quantum dot fluorescent body, light-emitting device, electronic apparatus, mechanical device, and method for producing the molded body of a quantum dot fluorescent body dispersion resin
  • Composition containing quantum dot fluorescent body, molded body of quantum dot fluorescent body dispersion resin, structure containing quantum dot fluorescent body, light-emitting device, electronic apparatus, mechanical device, and method for producing the molded body of a quantum dot fluorescent body dispersion resin
  • Composition containing quantum dot fluorescent body, molded body of quantum dot fluorescent body dispersion resin, structure containing quantum dot fluorescent body, light-emitting device, electronic apparatus, mechanical device, and method for producing the molded body of a quantum dot fluorescent body dispersion resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0045] The composition containing the quantum dot phosphor according to Embodiment 1 has a configuration in which the quantum dot phosphor is dispersed in a predetermined dispersion resin. As the above resin for dispersion, a cycloolefin (co)polymer can be used.

[0046] Generally, on the surface of the quantum dot phosphor particle, an organic passive layer is coordinated to the core surface mainly for the purpose of (A) preventing aggregation or the like. In addition, the organic passive layer (also known as the shell.) In addition to preventing aggregation, it also has the functions of (B) protecting the core particles from the surrounding chemical environment, (C) imparting electrical stability to the surface, and (D) controlling The role of solubility in the solvent system.

[0047] In addition, the chemical structure of the above-mentioned organic passive state can be selected according to the purpose, and may be, for example, an organic molecule having a straight-chain o...

Embodiment approach 2

[0101] Figure 4 A cross-sectional view of an example of a structure including a quantum dot phosphor according to Embodiment 2 is shown in . Figure 4 Among them, the structure containing quantum dot phosphors includes: quantum dot phosphors 18 dispersed in the resin for dispersion with a concentration of 0.01% by mass to 20% by mass in the quantum dot phosphor dispersion resin molding 22, coated quantum dot phosphors The entire surface of the dispersed resin molded body 22 is formed by a gas barrier layer 24 that reduces the penetration of oxygen or the like into the quantum dot phosphor dispersed resin molded body 22 . In addition, in other embodiments, the gas barrier layer 24 may be formed by covering a part of the surface of the quantum dot phosphor-dispersed resin molded body 22 (refer to Figure 6 , Figure 7 ). In addition, it is preferable that the gas barrier layer 24 can reduce the permeation of water vapor other than oxygen. Here, the so-called gas barrier lay...

Embodiment 1

[0129] In a 50 mL glass screw bottle, under an argon atmosphere, 5 g of a COP-type cycloolefin polymer (ZEONEX480R, manufactured by Nippon Zeon Co., Ltd.; an amorphous resin containing structural formula (2)) was added, and vacuum freezing and degassing Then, 5 g of dehydrated toluene (manufactured by Wako Pure Chemical Industries, Ltd.) stored under an argon atmosphere was stirred and dissolved at room temperature on a drum mixer to obtain a resin solution ZT50-1.

[0130] To the obtained resin solution ZT50-1, 3.05 g of a toluene dispersion of a quantum dot phosphor adjusted to 82 mg / ml was added under an argon atmosphere. Here, as the molecular structure of the quantum dot phosphor, nanoparticles with a core-shell structure, InP core, ZnS shell, myristic acid as a capping agent are used, and the diameter of the core is 2.1 nm. Then, it was fully kneaded using an autorotation and revolution type agitator ARV310-LED manufactured by Shinky Corporation, to obtain a dispersion c...

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Abstract

Provided are: a composition that contains a quantum dot fluorescent body and that is able to suppress quenching of the quantum dot fluorescent body; a molded body of a quantum dot fluorescent body dispersion resin; a structure containing a quantum dot fluorescent body; a light-emitting device; an electronic apparatus; a mechanical device; and a method for producing the molded body of a quantum dot fluorescent body dispersion resin. A quantum dot fluorescent body is dispersed in a cycloolefin (co)polymer that is a dispersion resin to form the composition containing a quantum dot fluorescent body, and the composition containing a quantum dot fluorescent body is molded, forming the molded body of the quantum dot fluorescent body dispersion resin. Also, a gas barrier layer that reduces the passage of oxygen to the molded body of the quantum dot dispersion resin is formed at a portion or the entirety of the surface of the molded body of the quantum dot fluorescent body dispersion resin. Furthermore, a light-emitting device is configured using the composition containing the quantum dot fluorescent body as a sealing material that seals an LED chip.

Description

technical field [0001] The present invention relates to a composition containing quantum dot phosphors, a quantum dot phosphor-dispersed resin molded body, a structure containing quantum dot phosphors, a light-emitting device, electronic equipment, a mechanical device, and a method for producing a quantum dot phosphor-dispersed resin molded body improvement. Background technique [0002] In recent years, in light-emitting diodes (LEDs) and the like, quantum dots have been used as phosphors that convert the wavelength of incident light and emit light. Quantum dots (QDs) are light-emitting semiconductor nanoparticles, and generally have a diameter in the range of 1 to 20 nm. Furthermore, electrons are confined in a quantum form in well-defined, three-dimensional, and nanoscale-large semiconductor crystals. Such quantum dot phosphors are generally used dispersed in resin or the like. [0003] For example, in the following patent document 1, it is described that a plurality o...

Claims

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Application Information

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IPC IPC(8): C09K11/02H01L23/29H01L23/31H01L33/50H01L33/56
CPCH01L23/057H01L23/564H01L33/44H01L33/501H01L33/507H01L2933/0041C09K11/565H01L2224/48091H01L2224/48247Y10T428/3192H01L33/502C09K11/025H01L2924/00014C09K11/02H01L23/29H01L23/31
Inventor 内田博安田刚规藤田俊雄
Owner SHOWA DENKO KK
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