Quantum dot assembly as well as preparation method and application thereof

Abstract

The invention provides a quantum dot assembly as well as a preparation method and application thereof. The preparation method comprises the following steps: (1) putting polyglycol ether and an organic solvent in a first container, and sequentially performing emulsifying, dispersing, and stirring treatment till a solution is transparent, so as to obtain first dispersion fluid; (2) dispersing a quantum dot material in a dispersing agent in a second container, and performing stirring and dispersing so as to obtain second dispersion fluid; (3) pouring the first dispersion fluid and the second dispersion fluid in a third container, performing mixing and stirring until the solution in the third container is transparent, adding water, and performing ultrasonic dispersion so as to obtain a first microemulsion system; (4) adding strong ammonia water and ethyl orthosilicate to the first microemulsion system, and performing ultrasonic dispersion and mixing and a reaction so as to obtain a second microemulsion system; (5) sequentially performing demulsification treatment and centrifugation treatment on the second microemulsion system so as to obtain precipitates, then sequentially washing the precipitates, and performing vacuum drying on the washed precipitates so as to obtain the quantum dot assembly adopting a nucleocapsid structure. The prepared quantum dot assembly adopting the nucleocapsid structure is high in transmittance.

Description

technical field [0001] The invention relates to the technical field of high color gamut liquid crystal backlight modules, in particular to a quantum dot component and its preparation method and application. Background technique [0002] With the development of electronic products, consumers have higher and higher requirements for the picture quality of TVs, and high color gamut TVs quickly occupy the position of flagship products of major TV brands. At present, the mainstream method to achieve about 100% NTSC high color gamut is quantum dot technology. [0003] Due to the characteristic that quantum dot materials are prone to failure due to contact with water vapor and oxygen, water and oxygen barrier treatment is required during use. In the prior art, quantum dot materials are usually distributed in an organic matrix to form a quantum dot film, and then The two surfaces of the dot film are provided with a water-oxygen barrier diaphragm (for preventing water and oxygen from...

AI Technical Summary

Problems solved by technology

[0003] Due to the characteristic that quantum dot materials are prone to failure due to contact with water vapor and oxygen, water and oxygen barrier treatment is required during use. In the prior art, quantum dot materials are usually distributed in an organic matrix to form a quantum dot film, and then The two surfaces of the dot film are provided with a water-oxygen barrier diaphragm (for preventing water and oxygen from permeating); wherein, the water-oxygen barrier diaphragm is usually made of Al 2 o 3 Inorganic coatings are formed on the surface of the PET film. It can be seen that the existence of the coating will affect the light transmittance of the water-oxygen barrier film, thereby affecting the brightness of the quantum dot film.

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