Quantum dot film, preparation method thereof, backlight module and display device

A quantum dot film and quantum dot technology, which are applied in the field of liquid crystal display, can solve the problems of low luminous efficiency of quantum dot film, and achieve the effects of improving surface passivation effect, improving luminous efficiency and high stability

Active Publication Date: 2018-07-10
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a quantum dot film, a preparation method, a backlight module, and a display device to solve the problem of low luminous efficiency of the existing quantum dot film

Method used

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  • Quantum dot film, preparation method thereof, backlight module and display device
  • Quantum dot film, preparation method thereof, backlight module and display device
  • Quantum dot film, preparation method thereof, backlight module and display device

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preparation example Construction

[0035] Please refer to the attached image 3 , with image 3 A schematic flow chart of the preparation method of the quantum dot film provided by the embodiment of the present invention is shown. attached by image 3 It can be seen that the preparation method of the quantum dot film provided by the embodiment of the present invention includes:

[0036] S01: preparing quantum dot cores.

[0037] The quantum dot core is prepared by the quantum dot hydrothermal method or other methods to form the core of the quantum dot. Since the selected quantum dot cores are different, the preparation materials of the quantum dot cores are different, which is not limited in the embodiments of the present invention.

[0038] S02: Wrap the quantum dot core in a wide bandgap semiconductor shell to obtain a core-shell quantum dot.

[0039] The prepared quantum dot core is placed in the material for preparing the wide band gap semiconductor shell, and a layer of wide band gap semiconductor she...

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Abstract

The invention provides a quantum dot film, a preparation method thereof, a backlight module and a display device. In the quantum dot film, broad-band gap semiconductor shell can fill the defects of the core surfaces of quantum dots and improve the luminous efficiency of the quantum dots, the influence of the surface state of naked quantum dots on fluorescence can be reduced, and the fluorescence characteristic of the quantum dots can be improved. The bonding strength between a rigid inorganic aerogel and the broad-band gap semiconductor shell is much higher than the bonding strength between organic molecular ligands and the quantum dots, so that the quantum dot film has high stability. The rigid inorganic aerogel can form rigid epitaxial frameworks on the surfaces of core-shell quantum dots, and the dispersity of the quantum dots is increased, so that the quantum dots are not agglomerated in an epoxy resin polymer, and the luminous efficiency of the quantum dots is improved. The rigidepitaxial frameworks can also improve the surface passivation effect of the quantum dots, reduce the defect density, reduce the probability of nonradiative recombination and enhance the mobility of excitons in the quantum dots, so that the luminous efficiency of the quantum dots is improved, and finally the luminous efficiency of the quantum dot film is improved.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a quantum dot film and a preparation method, a backlight module and a display device. Background technique [0002] With the continuous development of liquid crystal display technology, consumers have higher and higher requirements on the color gamut of liquid crystal display devices. Corresponding to consumers' color gamut requirements for liquid crystal display devices, high color gamut liquid crystal display devices have gradually become mainstream products in the development of liquid crystal display technology. At present, the color gamut of the liquid crystal display device is mainly reflected by the color rendering of the backlight module in the liquid crystal display device, that is, the high color gamut color rendering is realized through the quantum dot film arranged above the diffusion plate or the light guide plate of the backlight module. [0003] In ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K3/30C08K3/11G02F1/13357C01B19/00C01G9/08C09K11/02C09K11/88
CPCC01B19/00C01G9/08C08K3/10C08K3/30C08K2003/3009C08K2003/3027C08K2003/3036C09K11/025C09K11/883G02F1/1336G02F1/133614C08L63/00
Inventor 刘振国宋志成
Owner HISENSE VISUAL TECH CO LTD
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