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Quantum dot ink and quantum dot color film

A quantum dot and ink technology, applied in the field of quantum dot ink and quantum dot color film, can solve the problems of poor film formation, easy blockage of nozzles, and unsmooth printing, so as to achieve smooth process, inhibit deposition, and reduce adverse effects.

Active Publication Date: 2019-03-08
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, the ink used to prepare the quantum dot color film is often poor in film formation, the printing is not smooth, and it is easy to block the nozzle

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a quantum dot ink, including: 30wt% red light CdSeS quantum dots, 30wt% cyclohexyl acetate (boiling point is 173.5°C), 35wt% cyclohexyl methacrylate (boiling point is 210°C) , 5wt% polyoxyethylene cetyl ether. The above-mentioned quantum dot ink can be prepared by simple mechanical stirring and mixing of various components.

[0031] The above ink can be placed for 90 days and still remain stable without agglomeration or precipitation. Using the above-mentioned quantum dot ink for inkjet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.

[0032]The luminous performance of the quantum dot color film was tested, and the initial luminance of the blue backlight used was 1000cd / m 2 , the results of the blue light absorption rate, luminance, and external quantum yield (EQE) of the quantum dot color film are shown in Table 1.

Embodiment 2

[0034] The present embodiment provides a kind of quantum dot ink, comprises: the red light InP / ZnS quantum dot of 35wt%, the methylcyclohexyl acetate (boiling point is 182 ℃) of 28wt%, the isobornyl acetate (boiling point is 220 ℃) ​​of 33wt% ℃), 4 wt% polyoxyethylene sorbitan trioleate. The above-mentioned quantum dot ink can be prepared by simple mechanical stirring and mixing of various components.

[0035] The above ink can be placed for 90 days and still remain stable without agglomeration or precipitation. Using the above-mentioned quantum dot ink for inkjet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.

[0036] The luminous performance of the quantum dot color film was tested, and the initial luminance of the blue backlight used was 1000cd / m 2 , the results of the blue light absorption rate, luminance, and external quantum yield (EQE) of the quantum dot color film are shown in Table 1.

Embodiment 3

[0038] This embodiment provides a quantum dot ink, including: 39wt% green light CdSe / CdS / ZnS quantum dots, 30wt% cyclohexyl acrylate (boiling point is 182°C), 25wt% 3,3,5-trimethyl Cyclohexyl acetate (boiling point is 211°C), 6 wt% polyoxyethylene propylene stearate. The above-mentioned quantum dot ink can be prepared by simple mechanical stirring and mixing of various components.

[0039] The above ink can be placed for 90 days and still remain stable without agglomeration or precipitation. Using the above-mentioned quantum dot ink for inkjet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.

[0040] The luminous performance of the quantum dot color film was tested, and the initial luminance of the blue backlight used was 1000cd / m 2 , the results of the blue light absorption rate, luminance, and external quantum yield (EQE) of the quantum dot color film are shown in Table 1.

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Abstract

The invention discloses a quantum dot ink and a quantum dot color film. The quantum dot ink is composed of quantum dots and an ester solvent in a cyclic structure, wherein the quantum dots are 10-45%by weight part of the quantum dot ink. By means of the ester solvent in the cyclic structure, the quantum dot ink can improve the dispersing stability of the quantum dots in the ink. When applied to ink-jet printing, the quantum dot ink can be smooth in printing process without blocking the jet nozzle; the printed quantum dot color film is good in flatness, uniform in formation and high in brightness.

Description

technical field [0001] The application belongs to the field of quantum dot luminescence technology, and in particular relates to a quantum dot ink and a quantum dot color film. Background technique [0002] Quantum dot materials have the advantages of high color purity, adjustable luminous color with size, and high light conversion efficiency. When quantum dots are used as light conversion materials for the color filter of an LCD (Liquid crystal display, liquid crystal display), the color gamut of the display and the utilization efficiency of the backlight can be significantly improved. At present, the preparation of quantum dot color film (QDCF) mainly uses quantum dot photoresist, but this method requires high heat resistance and acid and alkali resistance of the quantum dot material itself, and the curing process of photoresist will affect the quantum dot itself. The luminous efficiency will be adversely affected, and the photolithography method will consume a large amou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/30C09D11/36
CPCC09D11/30C09D11/36
Inventor 王思元王允军邓德晖李鑫
Owner SUZHOU XINGSHUO NANOTECH CO LTD
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