CN110272660B - Quantum dot ink, preparation method of quantum dot color film and quantum dot color film - Google Patents
Quantum dot ink, preparation method of quantum dot color film and quantum dot color film Download PDFInfo
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Abstract
The application discloses quantum dot ink, a quantum dot color film and a preparation method thereof. The quantum dot ink comprises the following components in percentage by weightThe meter, including: 0.01 wt% -50 wt% of quantum dots; 0.1-20 wt% of additive; 30-99.89 wt% of dispersion medium; wherein, the quantum dots and the additive are dispersed in the dispersion medium, and the additive is a silanization reagent. By adding the additive silanization reagent into the quantum dot ink, the additive silanization reagent can generate SiO in situ in the quantum dot color film formed by printing2And (4) carrying out light expansion on the particles, thereby obtaining a quantum dot color film with high brightness.
Description
Technical Field
The application belongs to the field of nano materials, and particularly relates to quantum dot ink, a preparation method of a quantum dot color film and the quantum dot color film.
Background
The quantum dot color film display has the excellent characteristics of ultrahigh color gamut, low energy consumption, ultra-thin property, flexibility and the like, and is the direction of a new generation of display technology. The ink-jet printing can realize the selective deposition and the accurate patterning control of the quantum dot display material on the pixel substrate and improve the utilization rate of raw materials, and is the most ideal process for preparing the quantum dot color film display screen. The quantum dot ink is used as the most basic ring of a full-color printed quantum dot color film device, and directly influences the final display effect of the quantum dot color film.
In the prior art, the brightness of the prepared quantum dot color film is improved by adding light expansion particles into the quantum dot ink. However, the quantum dot ink containing the photo-expandable particles is liable to clog a head in ink-jet printing. Accordingly, there is a need for improvements in the art.
Disclosure of Invention
In view of the above technical problems, an object of the present application is to provide a quantum dot ink, so as to finally achieve an improvement in brightness of a quantum dot color film prepared by printing.
According to a first aspect of the present application, there is provided a quantum dot ink comprising, in weight fraction:
0.01 wt% -50 wt% of quantum dots;
0.1-20 wt% of additive;
30-99.89 wt% of dispersion medium; wherein the content of the first and second substances,
the quantum dots and the additive are dispersed in the dispersion medium, the additive being a silylation agent.
Further, the silanization reagent comprises methyl orthosilicate, ethyl orthosilicate, trimethoxy silane, triethoxy silane and N, at least one of O-bis (trimethylsilyl) acetamide, bis (trimethylsilyl) trifluoroacetamide, dimethyldichlorosilane, 1,1,1,3,3, 3-hexamethyldisilane, N- (tert-butyldimethylsilyl) -N-methyltrifluoroacetamide, tert-butyldimethylchlorosilane, trimethylchlorosilane, trimethylsilyldiethylamine, trimethylsilylimidazole, long-chain alkyltrimethoxysilane, long-chain alkyltriethoxysilane, 3-aminopropyltriethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, and vinyltriethoxysilane.
Further, the dispersion medium includes at least one of an organic solvent, a monomer, and a resin.
Further, the organic solvent includes at least one of an alkane organic solvent, an aromatic organic solvent, an ester organic solvent, an ether organic solvent, and an alcohol organic solvent.
Further, the quantum dots comprise organic ligands, and the organic ligands comprise at least one of saturated or unsaturated amine, saturated or unsaturated acid and alkyl phosphine with the carbon atom number of more than or equal to 6.
According to another aspect of the present application, a method for preparing a quantum dot color film is provided, which includes the steps of:
s1, printing the quantum dot ink on a substrate;
and S2, curing to form the quantum dot color film.
According to a third aspect of the application, a quantum dot color film is provided, and is prepared by the preparation method of the quantum dot color film.
Further, the quantum dot color film comprises:
quantum dots;
SiO2(ii) a Wherein the content of the first and second substances,
the quantum dots and the SiO2In the mass ratio range of 1:2000～500：1。
further, the quantum dot color film comprises a quantum dot composite, and the quantum dot composite is SiO2A coated quantum dot.
Further, the quantum dot color film comprises a dispersion, and the dispersion is a resin.
Has the advantages that:
by adding the additive silanization reagent into the quantum dot ink, the additive silanization reagent can generate SiO in situ in the quantum dot color film formed by printing2And (4) carrying out light expansion on the particles, thereby obtaining a quantum dot color film with high brightness.
The preparation method of the quantum dot color film is simple, convenient and quick, and the obtained quantum dot color film is high in brightness and stability and has a certain value for promoting the practical application of the high-quality quantum dot color film in the aspect of next generation display.
Drawings
Fig. 1 is a schematic structural diagram of a quantum dot color film in an embodiment of the present application.
In the drawings like parts are provided with the same reference numerals. The figures show embodiments of the application only schematically.
Detailed Description
The technical solutions in the examples of the present application will be described in detail below with reference to the embodiments of the present application. It should be noted that the described embodiments are only some embodiments of the present application, and not all embodiments.
In a preferred embodiment of the present application, there is provided a quantum dot ink comprising, in weight fraction:
0.01 wt% -50 wt% of quantum dots;
0.1-20 wt% of additive;
30-99.89 wt% of dispersion medium; wherein the content of the first and second substances,
the quantum dots and the additive are dispersed in the dispersion medium, and the additive is a silylation agent.
In order to improve the brightness of a quantum dot color film in the prior art, light diffusion is usually added into quantum dot inkAnd (4) obtaining a quantum dot color film by the particles in a printing mode. However, the quantum dot ink added with the photo-expanding particles is easy to block a nozzle during printing, so that a quantum dot color film cannot be printed successfully, or the obtained quantum dot color film has poor luminous performance and is not beneficial to subsequent application. The inventor finds that the siloxane reagent can contact moisture and be hydrolyzed to form SiO after the printing process or film forming by adding the additive silanization reagent into the quantum dot ink2Thereby generating SiO in situ in the quantum dot color film formed by printing2The brightness of the quantum dot color film is improved by the light expansion particles.
In a preferred embodiment of the present application, the silylating agent comprises methyl orthosilicate, ethyl orthosilicate, trimethoxysilane, triethoxysilane, N, O-bis (trimethylsilyl) acetamide, bis (trimethylsilyl) trifluoroacetamide, dimethyldichlorosilane, 1,1,1,3,3, 3-hexamethyldisilane, N- (tert-butyldimethylsilyl) -N-methyltrifluoroacetamide, tert-butyldimethylchlorosilane, trimethylchlorosilane, trimethylsilyldiethylamine, trimethylsilylimidazole, long chain alkyltrimethoxysilane, long chain alkyltriethoxysilane, 3-aminopropyltriethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, N-bis (trimethylsilyl) acetamide, N, O-bis (trimethylsilyl) trifluoroacetamide, N-butyldimethylsilyl chloride, trimethylchlorosilane, trimethylsilyldiethylamine, trimethylsilylimidazole, long chain alkyltrimethoxysilane, long chain alkyltriethoxysilane, 3-aminopropyltriethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, N-methoxysilane, N, O-bis (trimethylsilyl) trifluoroacetate, N, O-trimethylsilyl) trifluoroacetate, N, one, N, one, At least one of vinyltriethoxysilane.
In a specific embodiment, the long chain alkyl trimethoxysilane, long chain alkyl triethoxysilane includes one of octyl trimethoxysilane, octyl triethoxysilane, decyl trimethoxysilane, decyl triethoxysilane, dodecyl trimethoxysilane, dodecyl triethoxysilane, hexadecyl trimethoxysilane, hexadecyl triethoxysilane, octadecyl trimethoxysilane, octadecyl triethoxysilane.
In a specific embodiment, the content of the additive in the quantum dot ink is 0.1 wt% to 20 wt% in terms of weight fraction. The inventors found that when the mass fraction of the additive in the quantum dot ink is within the range, the additive has better solubility in the quantum dot ink, so that the additive has excellent dispersibility in the quantum dot ink, is not easy to precipitate or generate precipitates in the quantum dot ink, and the stability of the quantum dot ink is higher.
In a preferred embodiment of the present application, the dispersion medium includes at least one of an organic solvent, a monomer, and a resin.
In a particular embodiment, the dispersion medium comprises at least the monomer, in which case it is preferred that the dispersion medium also comprises an initiator.
In a preferred embodiment of the present application, the organic solvent includes at least one of an alkane organic solvent, an aromatic organic solvent, an ester organic solvent, an ether organic solvent, and an alcohol organic solvent.
In a particular embodiment, the alkane solvent comprises a branched and linear saturated aliphatic hydrocarbon organic solvent CnH2n+2And a cycloalkane organic solvent CmH2mWherein n and m are positive integers, n is more than or equal to 6 and m is less than or equal to 18. For example, alkane solvents include, but are not limited to, hexane, heptane, octane, nonane, decane, undecane, dodecane, tridecane, tetradecane, pentadecane, hexadecane, heptadecane, octadecane, cyclodecane, and the like, cycloundecane, and isomers thereof.
In a specific embodiment, the aromatic hydrocarbon solvent includes, but is not limited to, toluene, ethylbenzene, o-xylene (o-), m-xylene (m-), p-xylene (p-), o-chlorotoluene, p-chlorotoluene, m-chlorotoluene, o-diethylbenzene (o-), m-diethylbenzene (m-), p-diethylbenzene (p-), o-dichlorobenzene, m-dichlorobenzene, p-dichlorobenzene, trimethylbenzene, tetramethylbenzene, tripentylbenzene, pentyltoluene, 1-methylnaphthalene, dihexylbenzene, butylbenzene, sec-butylbenzene, tert-butylbenzene, isobutylbenzene, dibutylbenzene, isopropylbenzene, p-diisopropylbenzene, pentylbenzene, dipentylbenzene, dodecylbenzene, tetrahydronaphthalene, cyclohexylbenzene, 1,3, 5-trimethylbenzene cyclohexylbenzene, 1-chloronaphthalene, 1-tetralone, 3-phenoxytoluene, p-xylene, p-diisopropylbenzene, pentylbenzene, dipentylbenzene, dodecylbenzene, tetrahydronaphthalene, cyclohexylbenzene, 1,3, 5-trimethylbenzene cyclohexylbenzene, 1-chloronaphthalene, 1-tetralone, 3-phenoxytoluene, p-xylene, 1-methoxynaphthalene, dimethylnaphthalene, 3-isopropylbiphenyl, 1,2, 4-trimethylbenzenebiphenyl, benzyl benzoate, benzyl ether, benzyl benzoate, indene, benzylbenzene, divinylbenzene, indane, styrene oxide, and the like, or any mixture thereof.
In a particular embodiment, the organic solvent in the inks of the present application is preferably an organic solvent having a boiling point greater than 200 ℃. The inventor finds that the problem of nozzle blockage caused by too high drying speed of ink drops during printing can be effectively avoided due to the high boiling point of the organic solvent, and the ink has better wettability on a printing substrate and is easy to spread.
In a preferred embodiment of the present application, the quantum dots are selected from at least one of group IIB-VIA, group IIIA-VA, group IVA-VIA, group IB-IIIA-VIA, group IIB-IVA-VIA, group IIA-IVB-VA, group VIII-VIA single or composite structure quantum dots, or perovskite quantum dots. However, the exemplary embodiments of the present application are not limited thereto.
In a particular embodiment, the quantum dots are selected from the group consisting of CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, CdSeS, CdSeTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgSe, CdHgTe, HgZnSe, HgZnTe, MgZnSe, MgZnS, HgZnTeS, CdZnSeTe, CdZnSTe, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, AlgZnTe, GaN, InAs, GaInAsB, AlN, AlP, AlAs, AlGaInSb, AlGanGaAs, GanGanGanGanAs, AlNSNAP, AlnNAP, AlnGanNAP, AlnGanGanNAP, AlnGanNAP, AlnNAP, AlnGanGanNAP, AlnGanNAP, AlnNAP, AlnGanGanNAP, AlnGanGanGanGanNAP, AlnNAP, AlnGanNAP, AlnGanGanGanNAP, AlnNAP, AlnGanGanNAP, AlnNAP, AlnGanNAP, AlnGanGanGanGanGanGanGanGanGanGanNAP, AlnGanGanNAP, AlnNAP, AlnGanNAP, AlnNAP, AlnGanGanNAP, AlnNAP, AlnGanGanGanGanNAP, AlnNAP, AlnGanNAP, AlnGanGanGanP, AlnP, AlnNAP, AlnGanGanNAP, AlnGanNAP, AlnP, AlnGanGanP, AlnGanGanGanGanGanGanGanGanGanGanGanGanGanGanGanGanGanGanNAP, AlnGanNAP, AlnGanGanGanGanGanP, AlnGanGanGanGanGanGanGanGanNap, AlnGanGanGanGanGanGanNap, AlnGanNap, AlnGanGanNAP, AlnNAP, AlnNap, AlnGanGanNap, AlnNap, Al3(X ═ Cl, Br, I) or CH3NH3PbX3(X ═ Cl, Br, I) quantum dots.
In a preferred embodiment of the present application, the quantum dots comprise organic ligands.
In a preferred embodiment of the present application, the organic ligand comprises at least one of saturated or unsaturated amine, saturated or unsaturated acid, alkyl phosphine having 6 or more carbon atoms. The inventors have found that the organic ligand can improve the solubility and dispersibility of the quantum dot ink, thereby making the quantum dot less prone to settling in the quantum dot ink.
In a specific embodiment, the organic ligand comprises tetradecanoic acid, hexadecanoic acid, octadecanoic acid, eicosanoic acid, oleic acid, tributylamine, tri-n-octylamine, oleylamine, trioctylphosphine, n-dodecanethiol, or any combination thereof. However, the exemplary embodiments of the present application are not limited thereto.
In a preferred embodiment of the present application, a method for preparing a quantum dot color film is provided, which includes the steps of:
s1, printing the quantum dot ink on the substrate, wherein the quantum dot ink comprises the following components in parts by weight: 0.01 wt% -50 wt% of quantum dots; 0.1-20 wt% of additive; 30-99.89 wt% of dispersion medium; wherein, the quantum dots and the additive are dispersed in the dispersion medium, and the additive is a silanization reagent;
and S2, curing to form the quantum dot color film.
In the embodiment, the silanization reagent is added into the quantum dot ink, so that the siloxane reagent can contact with water and be hydrolyzed to form SiO in the printing process or after film formation2Thereby generating SiO in situ in the quantum dot color film formed by printing2The brightness of the quantum dot color film is improved by the light expansion particles.
In a preferred embodiment of the present application, the curing method for curing the printed quantum dot ink includes at least one of a solvent removal process, an ultraviolet irradiation process, and a heating process.
In a specific embodiment, the desolvation treatment includes at least one of a drying treatment and a low-temperature vacuum-pumping treatment.
In a preferred embodiment of the present application, a quantum dot color film is provided, which is prepared by two steps:
s1, printing the quantum dot ink on a substrate;
and S2, curing to form the quantum dot color film.
In a preferred embodiment of the present application, a quantum dot color film includes:
quantum dots;
SiO2(ii) a Wherein the content of the first and second substances,
quantum dots and SiO2In the mass ratio range of 1: 2000-500: 1.
in the present application, the inventors found that the equivalent quantum dots and SiO2When the mass ratio is in the range, the light emission of the quantum dot color film is uniform, so that the light emission efficiency of the quantum dot color film is improved.
In a preferred embodiment of the present application, the quantum dot color film comprises a quantum dot composite.
In a preferred embodiment of the present application, the quantum dot composite is SiO2A coated quantum dot.
In this application, SiO2Is prepared by hydrolyzing additive silanization reagent in quantum dot ink. Silanization reagents rely on the hydrolysis of moisture in air or in an environment with a certain humidity to form SiO2SiO of the2On one hand, the quantum dot can be used as a photodiffusion particle, the photodiffusion effect of the quantum dot is enhanced, the light extraction efficiency of a quantum dot color film is improved, and on the other hand, the quantum dot can be wrapped on the surface of the quantum dot, so that the quantum dot is protected, and the stability of the quantum dot is improved.
In a preferred embodiment of the present application, the quantum dot color film further comprises a dispersion, and the dispersion is a resin.
In a specific embodiment, the quantum dots and SiO2Dispersed in the dispersion.
In a specific embodiment, SiO2The coated quantum dots are dispersed in the dispersion.
In a specific embodiment, the quantum dots, SiO2And SiO2The coated quantum dots are dispersed in the dispersion.
In a preferred embodiment of the present application, the quantum dots comprise organic ligands.
In a preferred embodiment of the present application, the organic ligand comprises at least one of saturated or unsaturated amine, saturated or unsaturated acid, alkyl phosphine having 6 or more carbon atoms. The inventor finds that the organic ligand can improve the stability of the quantum dot color film and improve the brightness of the quantum dot color film to a certain extent.
In a specific embodiment, the organic ligand comprises tetradecanoic acid, hexadecanoic acid, octadecanoic acid, eicosanoic acid, oleic acid, tributylamine, tri-n-octylamine, oleylamine, trioctylphosphine, n-dodecanethiol, or any combination thereof. However, the exemplary embodiments of the present application are not limited thereto.
Hereinafter, embodiments of the present invention will be described in more detail with reference to examples. However, they are exemplary embodiments of the present invention, and the present invention is not limited thereto.
Quantum dot ink
Example 1
A quantum dot ink comprising: 30 wt% of CdSe/ZnS quantum dots, 10 wt% of methyl orthosilicate and 60 wt% of decane.
Example 2
A quantum dot ink comprising: 1 wt% InP/ZnS quantum dots, 20 wt% bis (trimethylsilyl) trifluoroacetamide, 30 wt% 1,2, 3-trimethylbenzene, 49 wt% acrylic acid monomer.
The quantum dot ink also includes an initiator.
Example 3
A quantum dot ink comprising: 35 wt% of CdZnSeS/ZnS quantum dots, 5 wt% of 3-aminopropyltriethoxysilane, 25 wt% of bromotoluene and 35 wt% of decane.
The quantum dots comprise ligands, and the ligands are oleic acid and oleylamine.
Example 4
A quantum dot ink comprising: 10 wt% of CdSe/CdZnSe/ZnS quantum dots, 10 wt% of vinyl triethoxysilane, 70 wt% of acrylic monomer and 10 wt% of acrylic resin.
The quantum dots comprise a ligand, and the ligand is dodecyl mercaptan.
The quantum dot ink also includes an initiator.
Comparative example 1
A quantum dot ink comprising: 30 wt% of CdSe/ZnS quantum dots and 70 wt% of decane.
Comparative example 2
A quantum dot ink comprising: 1 wt% InP/ZnS quantum dots, 40 wt% 1,2, 3-trimethylbenzene, 59 wt% acrylic acid monomer.
The quantum dot ink also includes an initiator.
Comparative example 3
A quantum dot ink comprising: 35 wt% of CdZnSeS/ZnS quantum dots, 30 wt% of bromotoluene and 35 wt% of decane.
The quantum dots comprise ligands, and the ligands are oleic acid and oleylamine.
Comparative example 4
A quantum dot ink comprising: 10 wt% of CdSe/CdZnSe/ZnS quantum dots, 80 wt% of acrylic monomer and 10 wt% of acrylic resin.
The quantum dots comprise a ligand, and the ligand is dodecyl mercaptan.
The quantum dot ink also includes an initiator.
Quantum dot color film
Example 5
Referring to fig. 1, a quantum dot color film 10 of the embodiment is carried by a substrate 20, and the quantum dot color film 10 is obtained by printing the quantum dot ink disclosed in embodiment 1 on the substrate, removing the organic solvent, and heating and curing.
The quantum dot color film 10 comprises CdSe/ZnS quantum dots and SiO2. CdSe/ZnS quantum dots, SiO2The mass ratio of (A) to (B) is 3: 1.
example 6
The quantum dot color film of the embodiment is carried by the substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 2 on the substrate, removing the organic solvent, and heating and curing.
The quantum dot color film comprises InP/ZnS quantum dots and SiO2、SiO2Coated InP/ZnS quantum dots, acrylic resin, wherein the InP/ZnS quantum dots, SiO2、SiO2The coated InP/ZnS quantum dots are dispersed in acrylic resin. InP/ZnS quantum dot, SiO2、SiO2The mass ratio of the coated InP/ZnS quantum dots is1：18：2。
Example 7
The quantum dot color film of the embodiment is carried by the substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 3 on the substrate, removing the organic solvent, and heating and curing.
The quantum dot color film comprises CdZnSeS/ZnS quantum dots and SiO2. CdZnSeS/ZnS quantum dot, SiO2The mass ratio of (A) to (B) is 7: 1.
example 8
The quantum dot color film of the embodiment is carried by the substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 4 on the substrate, and heating and curing the printed quantum dot ink.
The quantum dot color film comprises CdSe/CdZnSe/ZnS quantum dots and SiO2Acrylic resin, in which CdSe/CdZnSe/ZnS quantum dots, SiO2Dispersed in the acrylic resin. CdSe/CdZnSe/ZnS quantum dots, SiO2The mass ratio of (1): 1.
comparative example 5
The quantum dot color film of the embodiment is carried by the substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 5 on the substrate, removing the organic solvent, and heating and curing.
The quantum dot color film 10 comprises CdSe/ZnS quantum dots.
Comparative example 6
The quantum dot color film of the embodiment is carried by the substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 6 on the substrate, removing the organic solvent, and heating and curing.
The quantum dot color film comprises InP/ZnS quantum dots and acrylic resin, wherein the InP/ZnS quantum dots are dispersed in the acrylic resin.
Comparative example 7
The quantum dot color film of the embodiment is carried by the substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 7 on the substrate, removing the organic solvent, and heating and curing.
The quantum dot color film comprises CdZnSeS/ZnS quantum dots.
Comparative example 8
The quantum dot color film of this embodiment is carried by a substrate, and the quantum dot color film is obtained by printing the quantum dot ink disclosed in embodiment 8 on the substrate, and heating and curing.
The quantum dot color film comprises CdSe/CdZnSe/ZnS quantum dots and acrylic resin, wherein the CdSe/CdZnSe/ZnS quantum dots are dispersed in the acrylic resin.
Characterization of the test
The quantum dot ink is printed by a UNIJET ink-jet printer.
When the quantum dot ink of embodiments 1-4 is used for printing on a substrate, the printing process is smooth, and the continuous printing can be carried out for more than 60 min. After curing, the flat quantum dot color films of examples 5-8 can be obtained, respectively. The quantum dot color film has uniform light emission and good film forming property.
When the quantum dot ink of comparative examples 1-4 is used for printing on a substrate, the printing process is smooth, and continuous printing can be carried out for more than 60 min. After curing, the smooth quantum dot color film of comparative examples 5-8 can be obtained.
The luminance of the quantum dot color films of the embodiments 5-8 and the comparative examples 5-8 is respectively tested, and the luminance of the adopted blue light backlight sources is 1000cd/m2The test results are as follows:
the above table shows that the quantum dot color film prepared by the quantum dot ink has good film forming property, uniform light emission and high brightness. The maximum emergent luminance of the quantum dot color film is 3082cd/m2The external quantum efficiency EQE was up to 31.8%, exhibiting good optical performance. The additive silanization reagent is added into the quantum dot ink, so that the quantum dot ink can be printed to form a certain amountIn-situ generation of SiO in sub-dot color film2And (4) carrying out light expansion on the particles, thereby obtaining a quantum dot color film with high brightness.
Although the present disclosure has been described and illustrated in greater detail by the inventors, it should be understood that modifications and/or alterations to the above-described embodiments, or equivalent substitutions, will be apparent to those skilled in the art without departing from the spirit of the disclosure, and that no limitations to the present disclosure are intended or should be inferred therefrom.
Claims (7)
1. A quantum dot ink, comprising, in weight fractions:
0.01 wt% -50 wt% of quantum dots;
0.1 wt% -20 wt% of additive;
30-99.89 wt% of a dispersion medium; the dispersion medium comprises at least one of an organic solvent, a monomer and a resin; the organic solvent comprises at least one of alkane organic solvent, aromatic organic solvent, ester organic solvent, ether organic solvent and alcohol organic solvent;
the quantum dots and the additive are dispersed in the dispersion medium, the additive is a silanization reagent, the quantum dot ink is printed to obtain a quantum dot color film, and the silanization reagent is hydrolyzed to form SiO in the printing process or after film forming2Thereby in-situ generating SiO in the quantum dot color film2A light diffusing particle;
wherein the silanization reagent comprises methyl orthosilicate, ethyl orthosilicate, trimethoxy silane, triethoxy silane and N, at least one of O-bis (trimethylsilyl) acetamide, bis (trimethylsilyl) trifluoroacetamide, dimethyldichlorosilane, 1,1,1,3,3, 3-hexamethyldisilane, N- (tert-butyldimethylsilyl) -N-methyltrifluoroacetamide, tert-butyldimethylchlorosilane, trimethylchlorosilane, trimethylsilyldiethylamine, trimethylsilylimidazole, long-chain alkyltrimethoxysilane, long-chain alkyltriethoxysilane, 3-aminopropyltriethoxysilane, N- (beta-aminoethyl) -gamma-aminopropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, and vinyltriethoxysilane.
2. The quantum dot ink as claimed in claim 1, wherein the quantum dot comprises an organic ligand, and the organic ligand comprises at least one of saturated or unsaturated amine, saturated or unsaturated acid, and alkyl phosphine with carbon number not less than 6.
3. A preparation method of a quantum dot color film is characterized by comprising the following steps:
s1, printing the quantum dot ink on the substrate;
s2, curing to form the quantum dot color film; wherein the content of the first and second substances,
the quantum dot ink is selected from the quantum dot ink as claimed in any one of claims 1-2.
4. A quantum dot color film, wherein the quantum dot color film is prepared by the preparation method of claim 3.
5. The quantum dot color film of claim 4, wherein the quantum dot color film comprises:
quantum dots;
SiO2(ii) a Wherein the content of the first and second substances,
the quantum dots and the SiO2In the mass ratio range of 1: 2000-500: 1.
6. the quantum dot color film of claim 4, wherein the quantum dot color film comprises a quantum dot composite, and the quantum dot composite is SiO2A coated quantum dot.
7. The quantum dot color film of claim 4, wherein the quantum dot color film comprises a dispersion, and the dispersion is a resin.
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| CN201910470964.5A CN110272660B (en) | 2019-05-31 | 2019-05-31 | Quantum dot ink, preparation method of quantum dot color film and quantum dot color film |
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| CN201910470964.5A CN110272660B (en) | 2019-05-31 | 2019-05-31 | Quantum dot ink, preparation method of quantum dot color film and quantum dot color film |
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| CN110272660B true CN110272660B (en) | 2021-11-19 |
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| CN111334128A (en) * | 2020-03-27 | 2020-06-26 | 苏州晶台光电有限公司 | Quantum dot composite material ink, preparation method and application |
| CN112143287B (en) * | 2020-09-22 | 2023-01-17 | 苏州星烁纳米科技有限公司 | Quantum dot ink, color filter film, display device and preparation method of color filter film |
| CN114488615A (en) * | 2022-02-11 | 2022-05-13 | 深圳市华星光电半导体显示技术有限公司 | Display panel, manufacturing method thereof and quantum dot film |
| CN115772277B (en) * | 2022-11-04 | 2024-05-28 | 闽都创新实验室 | Quantum dot luminescent master batch with quantum dots coated by hydrolytic condensation reaction and preparation method thereof |
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