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Quantum dot ink for inkjet printing and preparation method thereof

A technology of inkjet printing and quantum dots, which is applied in inks, applications, household appliances, etc., can solve the problems of difficult uniform dispersion, quenching and deactivation, and easy agglomeration, so as to ensure stability and improve utilization rate

Active Publication Date: 2021-08-24
FUYANG XINYIHUA MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the scattering particles are generally inorganic compounds (such as TiO2, SiO2, Al2O3, etc.), it is difficult to disperse evenly in organic solvents.
In addition, the particle size of the inorganic scattering particles is relatively large (micron scale), and they are prone to agglomeration and sedimentation in the system, thereby affecting the luminous efficiency of the quantum dot color filter, and it is easy to block the nozzle when it is applied in the inkjet printing process
[0004] In addition, at present, the preparation process of quantum dot color film is mainly based on photolithography process, but in the process of photolithography, exposure, development and other processes have a great impact on quantum dots, and quenching and deactivation are very prone to occur.

Method used

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  • Quantum dot ink for inkjet printing and preparation method thereof
  • Quantum dot ink for inkjet printing and preparation method thereof
  • Quantum dot ink for inkjet printing and preparation method thereof

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preparation example Construction

[0057] According to another aspect of the present invention, the preparation method of the quantum dot ink for inkjet printing is provided, comprising the following steps:

[0058] S101: mixing and dispersing quantum dots, film-forming resin, photopolymerizable monomer, photoinitiator, leveling agent and solvent to obtain a first dispersion;

[0059] S102: Mix and disperse the organic pigment particles and the dispersion resin to obtain a second dispersion liquid;

[0060] S103: Mix and stir the first dispersion liquid and the second dispersion liquid to obtain a quantum dot ink for inkjet printing.

[0061] According to an embodiment of the present invention, in step S101, the mixing method may be: stirring each component to form a uniform dispersion.

[0062] According to one embodiment of the present invention, in step S102, the mixing and dispersing is carried out by strong shear force grinding.

[0063] The strong shear force grinding process can specifically be: use a ...

Embodiment 1～6

[0070] The preparation of embodiment 1~6 quantum dot ink

[0071] mixing and dispersing the quantum dots, film-forming resin, photopolymerizable monomer, photoinitiator, leveling agent and solvent to obtain a first dispersion;

[0072] mixing and dispersing the organic pigment particles and the dispersing resin by means of strong shear grinding to obtain a second dispersion;

[0073] The first dispersion liquid and the second dispersion liquid were mixed and stirred to obtain the quantum dot ink for inkjet printing of Preparation Example 1.

[0074] The quantum dot inks of Examples 1-6 are printed by inkjet printing to obtain a quantum dot color film for photoluminescence.

[0075] Components in the embodiment of the invention in table 1

[0076]

[0077]

[0078] The consumption (unit: weight %) of each component in the embodiment of the present invention in table 2

[0079]

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Abstract

The invention belongs to the field of flat panel display technology, in particular to a quantum dot ink for inkjet printing and a preparation method. Based on the total weight of the quantum dot ink, the quantum dot ink comprises 3-40wt% quantum dots, 5-40wt% film-forming resin, 1-10wt% dispersing resin, 0.01-20wt% organic pigment particles, 5 ‑40wt% photopolymerizable monomer, 0.01‑2wt% photoinitiator, 0.01‑0.1wt% leveling agent and 10‑40wt% solvent.

Description

technical field [0001] The invention belongs to the field of flat panel display technology, in particular to a quantum dot ink for inkjet printing and a preparation method. Background technique [0002] Quantum dot color film is a color conversion film prepared by dispersing quantum dots in photoresist instead of traditional pigments. Compared with traditional color filters, quantum dot color film can effectively improve brightness and widen the color gamut. However, quantum dots are nanoscale in size. When the blue light backlight passes through the quantum dot color filter, it has a very short optical path compared with the pigment, resulting in a large amount of blue light passing through the quantum dot color filter and cannot be effectively used, so that the excited red and green light Efficiency decreases and brightness decreases. [0003] In response to this problem, the performance of quantum dot color filters can be improved by increasing the thickness of the fil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/30C09D11/322
CPCC09D11/30C09D11/322
Inventor 岳爽李琳梁珂
Owner FUYANG XINYIHUA MATERIAL TECH