Quantum dot ink and quantum dot color filter

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 dispersion of light-diffusing particles, affecting printing effect, and unsmooth printing, and achieves excellent optical properties, good flatness, and smooth process. Effect

Active Publication Date: 2019-03-29
SUZHOU XINGSHUO NANOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the dispersibility of light diffusing particles in the ink system is poor, and they are easy to aggregate and settle, which affects the printing effect
In addition, the quantum dot inks in the prior art often have poor film-forming properties, the printing is not smooth, and the nozzles are easily blocked

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present embodiment provides a kind of quantum dot ink, comprises: the red light CdSe / CdS / ZnS quantum dot of 32wt%, the cyclohexyl butyrate (boiling point is 202 ℃) of 26wt%, the 2-methylpropionic acid ring of 34wt% Hexyl ester (boiling point: 259.9° C.), 3 wt % polymethyl methacrylate particles and 5 wt % polyoxyethylene monolaurate. The above-mentioned quantum dot ink can be prepared by simple mechanical stirring and mixing of various components.

[0034] The above ink can be placed for 120 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.

[0035] 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 qua...

Embodiment 2

[0037] This embodiment provides a quantum dot ink, including: 34wt% red light CdZnSeS quantum dots, 25wt% cyclohexyl acetate (boiling point is 173.5°C), 33wt% isobornyl methacrylate (boiling point is 263.1°C) , 4wt% polystyrene particles and 4wt% polyoxyethylene sorbitan tristearate.

[0038] The above ink can be placed for 120 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.

[0039] 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

[0041] The present embodiment provides a kind of quantum dot ink, comprises: the green light CdSe quantum dot of 36wt%, the methyl acetate cyclohexyl ester (boiling point is 201 ℃) of 30wt%, the isobornyl butyrate (boiling point is 254 ℃) of 26wt% ℃), 3wt% polycarbonate particles and 5wt% polyoxyethylene oleyl ether.

[0042] The above ink can be placed for 120 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.

[0043] 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 filter. Specifically, the quantum dot ink includes quantum dots, photodiffusion particles and an ester solvent with a ring structure.The quantum dots account for 10wt%-45wt% of the quantum dot ink. The quantum dot ink provided by the invention adopts ring structure esters as the solvent, and improves the dispersion stability of quantum dots and photodiffusion particles in ink. When the ink is used for inkjet printing, the process is smooth and nozzles are not blocked, the obtained quantum dot color filter has the characteristics of good flatness, uniform film and high emergent light 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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