CN109608939B - Quantum dot ink and quantum dot color film - Google Patents
Quantum dot ink and quantum dot color film Download PDFInfo
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- CN109608939B CN109608939B CN201811202836.4A CN201811202836A CN109608939B CN 109608939 B CN109608939 B CN 109608939B CN 201811202836 A CN201811202836 A CN 201811202836A CN 109608939 B CN109608939 B CN 109608939B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/36—Inkjet printing inks based on non-aqueous solvents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/50—Sympathetic, colour changing or similar inks
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- G—PHYSICS
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- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133614—Illuminating devices using photoluminescence, e.g. phosphors illuminated by UV or blue light
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Abstract
The application discloses quantum dot ink and a quantum dot color film. The quantum dot ink comprises quantum dots, light diffusion particles and a solvent, wherein the solvent comprises at least one ester solvent with a ring structure and at least one aromatic solvent. The quantum dot ink uses the ester with the cyclic structure and the aromatic hydrocarbon as the mixed solvent, and the content of the ester and the aromatic hydrocarbon is controlled within a certain proportion range, so that the dispersion stability of the light diffusion particles in the ink is effectively improved. The process is smooth when the ink is used for ink-jet printing, the nozzle is not blocked, and the obtained quantum dot color film has good smoothness, uniform film formation and high brightness of emergent light.
Description
Technical Field
The application belongs to the technical field of quantum dot luminescence, and particularly relates to quantum dot ink and a quantum dot color film.
Background
The quantum dot material has the advantages of high color purity, adjustable luminescent color along with size, high light conversion efficiency and the like. When the quantum dots are used as the optical conversion material of a color film (color filter) of an LCD (Liquid crystal display), the color gamut of the display and the utilization efficiency of backlight can be obviously improved. At present, quantum dot photoresist is mainly used for preparing a Quantum Dot Color Film (QDCF), but the method has high requirements on heat resistance and acid and alkali resistance of a quantum dot material, the curing process of the photoresist can generate adverse effects on the luminous efficiency of the quantum dot, and a large amount of quantum dots can be consumed in a photoetching mode, so that material waste is caused, and the cost is high.
In order to solve the problems, quantum dots can be dispersed in a solvent to prepare quantum dot ink, a quantum dot color film is prepared in an ink-jet printing mode, and light diffusion particles can be added into the quantum dot ink to improve the light-emitting brightness of the quantum dot color film. However, the light diffusing particles are poor in dispersibility in an ink system, and are liable to aggregate, which affects the printing effect. In addition, the quantum dot ink in the prior art is poor in film forming property, unsmooth in printing and easy to block a nozzle.
Disclosure of Invention
In view of the above technical problems, the present application provides a quantum dot ink and a quantum dot color film.
According to a first aspect of the present application, there is provided a quantum dot ink comprising quantum dots, light-diffusing particles, and a solvent, wherein the solvent comprises at least one ester solvent with a cyclic structure and at least one aromatic solvent.
Furthermore, the mass ratio of the ester solvent to the aromatic solvent is 1 (0.7-9).
Further, the boiling points of the ester solvent and the aromatic solvent are different by at least 20 ℃; preferably, the boiling point of the ester solvent is 150-320 ℃ and the boiling point of the aromatic solvent is 130-320 ℃ under the standard atmospheric pressure.
Further, the cyclic structure is an alicyclic structure; the ester solvent with the annular structure is at least one selected from cyclohexyl formate, cyclohexyl acetate, methylcyclohexyl acetate, cyclohexyl propionate, cyclohexyl butyrate, cyclohexyl valerate, cyclohexyl hexanoate, o-tert-butylcyclohexyl acetate, cyclohexyl acrylate, cyclohexyl benzoate and cyclohexyl methacrylate.
Further, the ring structure is a bridge ring structure; the ester solvent having a cyclic structure is at least one selected from isobornyl acrylate, isobornyl methacrylate, isobornyl acetate and isobornyl isobutyrate.
Further, the light diffusion particles account for 0.1 wt% to 10 wt% of the ink system.
Further, the light diffusion particles are organic light diffusion particles; the organic light diffusion particles are selected from at least one of polymethyl methacrylate, polycarbonate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyamide, polyethylene, polyurethane and siloxane polymer particles; the light diffusion particles have a particle size of less than 300 nm.
Further, the quantum dot ink also comprises 1 wt% -10 wt% of a surfactant.
Further, the mass ratio of the surfactant to the light diffusion particles is (0.01-3): 1.
According to another aspect of the application, a quantum dot color film is provided, and the quantum dot color film is prepared by printing the quantum dot ink.
Has the advantages that: the quantum dot ink comprises at least one ester solvent with a ring structure and at least one aromatic solvent, and when the mass ratio of the two solvents is within the range of 1 (0.7-9), the dispersion stability of light diffusion particles in an ink system can be effectively improved. The ester solvent and the aromatic solvent have different boiling points, and when ink is printed in an ink jet mode, the ester with the low boiling point can volatilize preferentially, and the ester with the high boiling point can volatilize later, so that the gradient volatilization of the solvent is realized, the phenomenon that quantum dots in the ink drop are easy to deposit to the edge can be effectively inhibited, and the adverse effect caused by the coffee ring effect is reduced. The process is smooth when the ink is used for ink-jet printing, the spray head is not blocked, and the obtained quantum dot color film has good smoothness, uniform film formation and high light-emitting efficiency.
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.
The application provides quantum dot ink which comprises quantum dots, light diffusion particles and a solvent, wherein the solvent comprises at least one ester solvent with a ring structure and at least one aromatic solvent.
In the prior art, quantum dots are often dispersed in short-chain alkanes with fewer carbon atoms, such as pentane and hexane, but the short-chain alkanes have low viscosity and high volatilization speed at room temperature, and the ink drop drying speed is too high when ink-jet printing is carried out, so that nozzles are easily blocked. In addition, when a quantum dot color film is prepared, the requirement on the concentration of quantum dots in the ink is high, and the quantum dots with high concentration are not easy to stably disperse in a short-chain alkane solvent. It should be noted that the light diffusion particles are also poorly dispersed in the short paraffin, and are prone to coagulation, so that the quantum dot film obtained after printing has uneven surface and poor film forming property, and may cause nozzle blockage of a printer in severe cases.
Since the steric hindrance of the cyclic structure is larger in the ester solvent compound than that of a common group, the polarity of the ester solvent is very weak, and the inventors of the present application found that quantum dots and light diffusion particles with high mass concentration, for example, 10 wt% to 45 wt%, can maintain good dispersion stability in the mixed solvent of the ester with the cyclic structure and the aromatic hydrocarbon, and the phenomenon of agglomeration or settlement does not occur even after the mixed solvent is placed for a long time. In addition, the addition of the surfactant is beneficial to the quantum dot ink to meet the requirements of parameters such as viscosity, surface tension and the like required by ink-jet printing. When the ink is used for ink-jet printing, the quantum dots and the light diffusion particles are not easy to agglomerate, so that the printing process is smooth, the nozzle is not blocked, and the obtained quantum dot color film has good smoothness, uniform film formation and higher brightness.
The inventors have found that when the mass ratio of the ester solvent to the aromatic solvent in the above mixed solvent is less than 1:0.7 or more than 1:9, the system is not in a clear and transparent state after the light-diffusing particles are added to the ink, and the dispersibility of the light-diffusing particles is poor. When the mass ratio of the light diffusion particles to the ink is 1 (0.7-9), the light diffusion particles can be uniformly and stably dispersed in an ink system, the system is clear and transparent, and the coagulation phenomenon cannot occur after long-time storage, so that the adverse effect of poor dispersibility of the light diffusion particles on printing is avoided, and the smoothness of the printing process is improved.
In a preferred embodiment, the mass ratio of the ester solvent to the aromatic solvent is 1:0.7, 1:1, 1:2, 1:3, 1:4, 1:5, 1:6, 1:7, 1:8, 1: 9.
The quantum dots may be selected from at least one of group IIB-VIA compounds, group IIIA-VA compounds, group IB-IIIA-VIA compounds, and perovskites. Specific examples thereof include CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, MgSe, MgS, CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnSe, HgZnTe, MgZnSe, MgZnS, HgZnTeS, ZnSeS, CdTe, CdZnSTe, CdHgSeS, CdHgSTte, HgZnSeS, HgZnSeTe, HgZnSgZnSeTe, HgZnSGaGaGanP, GaN, GaGaInP, AlAs, AlSb, GaSb, GaInGaInAs, AlNSNAP, AlnAs, AlnGaInP, AlnAs, AlNSNAP, AlnAs, AlnNAP, AlnAs, AlnNPN, AlnAs, AlnNPN, AlnGanGanGanAs, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnNAP, AlnAs, AlnP, AlnAs, AlnNAP, AlnAs, AlnP, AlnbX3(X ═ Cl, Br, I) or CH3NH3PbX3(X ═ Cl, Br, I) quantum dots, but are not limited thereto.
In a preferred embodiment, the ester solvent and the aromatic solvent have boiling points that differ by at least 20 ℃. For example, the high boiling point is 230 to 320 ℃ and the low boiling point is 150 to 220 ℃ under the standard atmospheric pressure. When two solvents with different boiling points are used as solvents of the quantum dot ink, the solvents with low boiling points can be preferentially volatilized in the drying process of ink drops during ink jet printing, and the solvents with high boiling points can be volatilized later, so that the gradient volatilization of the solvents is realized, the phenomenon that the quantum dots in the ink drops are easily deposited to the edge is favorably inhibited, the adverse effect caused by the coffee ring effect is reduced, and the smooth and uniform quantum dot film is obtained.
In a specific embodiment, the cyclic structure is an alicyclic structure. Ester solvents containing an alicyclic structure include, but are not limited to, cyclohexyl formate, cyclohexyl acetate, methylcyclohexyl acetate, cyclohexyl propionate, cyclohexyl butyrate, cyclohexyl valerate, cyclohexyl hexanoate, o-t-butylcyclohexyl acetate, cyclohexyl acrylate, cyclohexyl benzoate, cyclohexyl methacrylate, butylcyclohexyl phthalate, dicyclohexyl phthalate, 1-chloroethylcyclohexyl carbonate, cyclohexyl p-toluenesulfonate, p-t-butylcyclohexyl, methylcyclohexyl acetate, 3-t-butylcyclohexyl acetate, p-t-butylcyclohexyl acetate, cyclohexyl 1-ethacrylate, cyclohexyl 2-chloroacetate, p-t-butylcyclohexyl chloroformate, cyclohexyl formate, cyclohexyl 2-methylpropionate, cyclohexyl 3,3, 5-trimethylacetate.
In a specific embodiment, the cyclic structure is a bridged ring structure. The ester solvent having a bridged ring structure includes, but is not limited to, isobornyl acrylate, isobornyl methacrylate, isobornyl acetate, isobornyl isobutyrate, and the like.
In a specific embodiment, the aromatic solvent is selected from halogenated naphthalenes such as naphthalene, tetrahydronaphthalene, decalin, bromonaphthalene, chloronaphthalene, and the like, halogenated benzenes such as nitrobenzene, aminobenzene, chlorobenzene, bromobenzene, dichlorobenzene, and the like, methyl naphthalene, and saturated alkyl-substituted benzenes such as xylene, trimethylbenzene, tetramethylbenzene, ethylbenzene, diethylbenzene, propylbenzene, butylbenzene, pentylbenzene, and the like.
In the ink system, the light diffusion particles are added, so that the light scattering can be increased, and the luminous brightness of the printed quantum dot film can be improved. In a specific embodiment, the light diffusing particles comprise 0.1 wt% to 10 wt% of the ink system. When the amount of the light diffusing particles added is controlled within the above range, it is ensured that the light diffusing particles are uniformly and stably dispersed in the system.
The inventors found that the organic light-diffusing particles have much higher dispersion stability in the ink system of the present application, have better compatibility with ester solvents, and do not undergo coagulation after being left for a long time, as compared with the inorganic light-diffusing particles. In a preferred embodiment, the light diffusing particles are selected from at least one of polymethylmethacrylate, polycarbonate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyamide, polyethylene, polyurethane, silicone-based polymer particles.
In a preferred embodiment, the light diffusing particles have a particle size of less than 300 nm. If the particle size of the light diffusion particles is too large, it is difficult to uniformly disperse the light diffusion particles in the ink, and coagulation is likely to occur, which directly affects the smoothness of printing and causes nozzle clogging. When the particle size of the light diffusion particles is less than 300nm, the particles are small, uniform dispersion is facilitated, the ink system is clear and transparent, the printing process is smooth, and a smooth and uniform quantum dot film is facilitated to be obtained.
In a specific embodiment, the quantum dot ink further comprises 1 wt% to 10 wt% of a surfactant. The surfactant may be a nonionic, anionic, cationic or amphoteric surfactant. Preferably, the surfactant is nonionic, including but not limited to at least one of alkylphenol ethoxylates, high-carbon fatty alcohol ethoxylates, fatty acid polyoxyethylene esters, fatty acid methyl ester ethoxylates, ethylene oxide adducts of polypropylene glycol, polyoxyethylated ionic surfactants, sorbitan esters, sucrose fatty acid esters, alkylolamide type surfactants, nonionic fluorocarbon surfactants, polyoxyethylene-polyoxypropylene copolymers.
The use of the surfactant can adjust the viscosity and surface tension of an ink system, so that the ink system has good leveling property, the requirement of ink-jet printing is met, the dispersion stability of quantum dots in the ink system can be effectively promoted, the printing film-forming property is improved, and a smooth and uniform quantum dot film is obtained.
In a specific embodiment, the mass ratio of the surfactant to the light diffusion particles is (0.01-3): 1. Preferably, the mass ratio is 0.01:1, 0.05:1, 0.1:1, 0.5:1, 1:1, 1.5:1, 2:1, 2.5:1, 3: 1.
In an exemplary embodiment of the present application, a quantum dot color film is disclosed, which is prepared by inkjet printing the quantum dot ink. The ink utilizes the mixed solvent of aromatic hydrocarbon and ester with a ring structure and a surfactant, improves the dispersion stability of the quantum dots and the light diffusion particles, and enables the ink to have proper viscosity and surface tension. The process is smooth when the ink-jet printing is carried out, the nozzle is not blocked, the obtained quantum dot color film has good smoothness and uniform film formation, and has higher blue light absorption rate and light-emitting brightness.
Hereinafter, embodiments are 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.
Example 1
The present embodiment provides a quantum dot ink, including: 40 wt% of red light CdSe/ZnS quantum dots, 30 wt% of cyclohexyl acetate (boiling point of 173.5 ℃), 24 wt% of tetrahydronaphthalene (boiling point of 207.2 ℃), 2 wt% of polymethyl methacrylate particles and 4 wt% of polyoxyethylene monooleate.
The ink can be kept stable after being placed for 150 days, and agglomeration or precipitation phenomena cannot occur. The quantum dot ink is used for ink-jet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.
Testing the luminous performance of the quantum dot color film, wherein the initial light-emitting brightness of the adopted blue light backlight source is 1000cd/m2Junction of blue light absorption, luminance, external quantum yield (EQE) of quantum dot color filmsThe results are shown in Table 1.
Example 2
The present embodiment provides a quantum dot ink, including: 35.5 wt% of red InP/ZnS quantum dots, 20 wt% of methylcyclohexyl acetate (boiling point 182 ℃), 40 wt% of xylene (boiling point 140 ℃), 2.5 wt% of polymethyl methacrylate particles and 2 wt% of polyoxyethylene cetyl ether.
The ink can be kept stable after being placed for 150 days, and agglomeration or precipitation phenomena cannot occur. The quantum dot ink is used for ink-jet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.
Testing the luminous performance of the quantum dot color film, wherein the initial light-emitting brightness of the adopted blue light backlight source is 1000cd/m2The results of blue light absorption, luminance, and external quantum yield (EQE) of the quantum dot color films are shown in table 1.
Example 3
The present embodiment provides a quantum dot ink, including: 30 wt% of green CdSeS quantum dots, 25 wt% of cyclohexyl acrylate (boiling point of 184 ℃), 30 wt% of methylnaphthalene (boiling point of 245 ℃), 6 wt% of polycarbonate particles and 9 wt% of polyoxyethylene monostearate.
The ink can be kept stable after being placed for 150 days, and agglomeration or precipitation phenomena cannot occur. The quantum dot ink is used for ink-jet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.
Testing the luminous performance of the quantum dot color film, wherein the initial light-emitting brightness of the adopted blue light backlight source is 1000cd/m2The results of blue light absorption, luminance, and external quantum yield (EQE) of the quantum dot color films are shown in table 1.
Example 4
The present embodiment provides a quantum dot ink, including: 28 wt% of green InP quantum dots, 15 wt% of cyclohexyl methacrylate (boiling point of 210 ℃), 45 wt% of trimethylbenzene (boiling point of 164.7 ℃), 4 wt% of polycarbonate particles and 8 wt% of polyoxyethylene sorbitan monostearate.
The ink can be kept stable after being placed for 150 days, and agglomeration or precipitation phenomena cannot occur. The quantum dot ink is used for ink-jet printing, the process is smooth, the film is formed uniformly, and a smooth quantum dot color film is obtained.
Testing the luminous performance of the quantum dot color film, wherein the initial light-emitting brightness of the adopted blue light backlight source is 1000cd/m2The results of blue light absorption, luminance, and external quantum yield (EQE) of the quantum dot color films are shown in table 1.
In examples 1 to 4, the quantum dot ink was printed using a FUJIFILM DMP-3000 inkjet printer.
TABLE 1
| Example 1 | Example 2 | Example 3 | Example 4 | |
| Absorption rate of blue light/%) | 95 | 78 | 90 | 75 |
| Luminance/cd/m2 | 1400 | 1176 | 4930 | 4892 |
| EQE/％ | 40.8 | 30 | 34.1 | 33.9 |
As can be seen from Table 1, the absorption rate of the color film prepared by the quantum dot ink in the application to blue light is up to 95%, and the maximum brightness of the emergent light is 4930cd/m2The external quantum efficiency EQE was up to 40.8%, exhibiting good optical performance.
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 (6)
1. The quantum dot ink comprises quantum dots, organic light diffusion particles and a solvent, and is characterized in that the solvent comprises at least one ester solvent with a cyclic structure and at least one aromatic solvent, wherein the cyclic structure is an alicyclic structure; the mass ratio of the ester solvent to the aromatic solvent is 1 (0.7-9), the boiling points of the ester solvent and the aromatic solvent are at least 20 ℃, the organic light diffusion particles account for 0.1-10 wt% of the ink system, and the particle size of the organic light diffusion particles is less than 300 nm;
the ester solvent with the alicyclic structure is selected from cyclohexyl formate, cyclohexyl acetate, methylcyclohexyl acetate, cyclohexyl propionate, cyclohexyl butyrate, cyclohexyl valerate, cyclohexyl hexanoate, o-tert-butylcyclohexyl acetate, cyclohexyl acrylate, cyclohexyl benzoate, cyclohexyl methacrylate, butylcyclohexyl phthalate, dicyclohexyl phthalate, at least one of 1-chloroethylcyclohexyl carbonate, cyclohexyl p-toluenesulfonate, p-tert-butylcyclohexyl, methyl acetate cyclohexyl, 3-tert-butylcyclohexyl acetate, p-tert-butylcyclohexyl acetate, cyclohexyl 1-ethacrylate, cyclohexyl 2-chloroacetate, p-tert-butylcyclohexyl chloroformate, cyclohexyl cyclohexanecarboxylate, cyclohexyl 2-methylpropionate, and cyclohexyl 3,3, 5-trimethylacetate;
the aromatic solvent is selected from one of naphthalene, tetrahydronaphthalene, decalin, bromonaphthalene, chloronaphthalene, nitrobenzene, aminobenzene, chlorobenzene, bromobenzene, dichlorobenzene, methylnaphthalene and xylene, trimethylbenzene, tetramethylbenzene, ethylbenzene, diethylbenzene, propylbenzene, butylbenzene and pentylbenzene.
2. The quantum dot ink according to claim 1, wherein the ester solvent has a boiling point of 150 to 320 ℃ and the aromatic solvent has a boiling point of 130 to 320 ℃ under normal atmospheric pressure.
3. The quantum dot ink according to claim 1, wherein the organic light diffusing particles are at least one selected from the group consisting of polymethylmethacrylate, polycarbonate, polystyrene, polyvinyl chloride, polyacrylonitrile, polyamide, polyethylene, polyurethane, and silicone polymer particles.
4. The quantum dot ink as claimed in claim 1, wherein the quantum dot ink further comprises 1 wt% to 10 wt% of a surfactant.
5. The quantum dot ink according to claim 4, wherein the mass ratio of the surfactant to the organic light-diffusing particles is (0.01-3): 1.
6. A quantum dot color film, wherein the quantum dot color film is prepared by printing the quantum dot ink according to any one of claims 1 to 5.
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| CN110172274B (en) * | 2019-05-29 | 2021-11-19 | 苏州星烁纳米科技有限公司 | Quantum dot ink and electroluminescent device |
| CN111808601A (en) * | 2020-06-05 | 2020-10-23 | 苏州星烁纳米科技有限公司 | Quantum dot composition and display device |
| TWI741636B (en) * | 2020-06-05 | 2021-10-01 | 華宏新技股份有限公司 | Multi-function diffusion film and diffusion plate containing the same |
| CN112099266B (en) * | 2020-09-18 | 2023-01-17 | 苏州星烁纳米科技有限公司 | Color film, preparation method thereof, processing device and display device |
| 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 |
| CN115991887A (en) * | 2021-10-19 | 2023-04-21 | 北京航空航天大学合肥创新研究院(北京航空航天大学合肥研究生院) | Light conversion film, preparation method thereof and display device |
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| CN103275617A (en) * | 2013-05-17 | 2013-09-04 | 涌奇材料技术（上海）有限公司 | Preparation method and application of organosilicon photo-diffusion particle |
| CN105153811A (en) * | 2015-08-14 | 2015-12-16 | 广州华睿光电材料有限公司 | Printing ink and electronic device |
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