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White quantum dot composite particle as well as preparation method and device thereof

A technology of composite particles and red light quantum dots, which is applied in the field of preparation devices, white light quantum dot composite particles and preparation methods thereof, can solve the problems of poor stability of quantum dot materials, low quantum efficiency and the like, and achieves high quantum efficiency, simple preparation method, High stability effect

Active Publication Date: 2014-05-14
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a white light quantum dot composite particle and its preparation method and preparation device to solve the problems of poor stability and low quantum efficiency of quantum dot materials

Method used

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  • White quantum dot composite particle as well as preparation method and device thereof
  • White quantum dot composite particle as well as preparation method and device thereof
  • White quantum dot composite particle as well as preparation method and device thereof

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preparation example Construction

[0057] see figure 2 , the embodiment of the present invention provides a preparation method of white light quantum dot composite particles, including:

[0058] 101. Mix red light quantum dots, green light quantum dots and blue light quantum dots with photoinitiators, polymerizable components and water respectively to form three kinds of quantum dot solutions with different concentrations, which are red light quantum dot solutions, green light quantum dot solutions and Blue light quantum dot solution.

[0059] 102. Provide an aqueous solution containing a surfactant, and the concentration of the surfactant is directly and negatively proportional to the diameter of the white light quantum dot composite particles to be prepared.

[0060] 103. The three microfluidic pipelines continuously provide three kinds of quantum dot solutions at the first flow rate, and the two external fluid pipelines continuously provide the aqueous solution containing surfactant at the second flow rate...

specific Embodiment 1

[0071]Step 1. Provide three primary color quantum dot solutions, for example: red light quantum dot solution, the mass percentage of red light quantum dots is 1%, the mass percentage of monomer methacryloylpropyl dimethyl chlorosilane is 91%, and the photoinitiator 1- The mass percentage of hydroxycyclohexyl phenyl ketone is 8%. Green light quantum dot solution, the mass percentage of green light quantum dots is 3%, the mass percentage of monomer methacryloylpropyl dimethyl chlorosilane is 90%, and the mass percentage of photoinitiator 1-hydroxycyclohexyl phenyl ketone is 7% . Blue light quantum dot solution, the mass percentage of blue light quantum dots is 15%, the mass percentage of monomer methacryloylpropyl dimethyl chlorosilane is 79%, and the mass percentage of photoinitiator 1-hydroxycyclohexyl phenyl ketone is 6% .

[0072] Step 2, providing an aqueous solution containing a surfactant, for example: the mass percentage of the surfactant sodium dodecylsulfonate (SDS) ...

specific Embodiment 2

[0075] Step 1. Provide three primary color quantum dot solutions, for example: red light quantum dot solution, the mass percentage of red light quantum dots is 1%, the mass percentage of monomer methacryloylpropyl dimethyl chlorosilane is 91%, and the photoinitiator 1- The mass percentage of hydroxycyclohexyl phenyl ketone is 8%. Green light quantum dot solution, the mass percentage of green light quantum dots is 3%, the mass percentage of monomer methacryloylpropyl dimethyl chlorosilane is 90%, and the mass percentage of photoinitiator 1-hydroxycyclohexyl phenyl ketone is 7% . Blue light quantum dot solution, the mass percentage of blue light quantum dots is 15%, the mass percentage of monomer methacryloylpropyl dimethyl chlorosilane is 79%, and the mass percentage of photoinitiator 1-hydroxycyclohexyl phenyl ketone is 6% .

[0076] Step 2, providing an aqueous solution containing a surfactant, for example: the mass percentage of the surfactant sodium dodecylsulfonate (SDS)...

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Abstract

The invention discloses a white quantum dot composite particle as well as a preparation method and device thereof to solve the problems of poor stability and low quantum efficiency of quantum dot materials. The white quantum dot composite particle comprises a particle main body which is a polymerized body formed by a photopolymerization reaction of a photo-initiator and a polymerizable component through ultraviolet irradiation, and red, green and blue quantum dots which are dispersed in the particle main body and are different in concentration. The composite particle disclosed by the embodiment of the invention has the beneficial effects as follows: the red, green and blue quantum dots are limited in a spherical space, and the quantum dot materials are hard to agglomerate and high in stability and quantum efficiency; and moreover, the preparation method is simple and easy for batch production.

Description

technical field [0001] The invention relates to the manufacturing field of quantum dot backlight technology, in particular to a white light quantum dot composite particle, a preparation method and a preparation device thereof. Background technique [0002] Organic light-emitting diodes (Organic light-emitting diodes, OLED) have the advantages of low cost, short response time, high brightness, wide viewing angle, low driving voltage, and flexible display. OLED technology has made great progress in recent years. Become a flat-panel full-color display technology with extensive development space. With the increasingly mature performance of monochromatic OLED, white organic light-emitting diodes (WOLED), as a new type of solid-state light source, has shown good application prospects in lighting and flat panel display backlight, and has attracted widespread attention. attention, its efficiency and performance have been dramatically improved. [0003] Quantum dots, also known as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F130/08C08F2/48C09K11/02
CPCC08F2/48C09K11/025H01L33/502H01L33/504Y02B20/00H10K50/115B01J19/0093B01J19/123B01J2219/0869B01J2219/1203B01J2219/00889B01J2219/00894B01J2219/00936
Inventor 唐琛谷敬霞王雪岚
Owner BOE TECH GRP CO LTD
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