Curable composition, cured layer produced using composition and display device including cured layer

Abstract

Provided are: a curable composition comprising (A) quantum dots and (B) a polymerizable compound, wherein the polymerizable compound comprises a first polymerizable compound that has a refractive index of 1.5 or more and a viscosity of 10 cps or more and that comprises a benzene ring, and a second polymerizable compound having a different structure to that of the first polymerizable compound and including a thiophene ring or a furan ring; a cured layer produced using the composition; and a display device including the cured layer.

Description

Curable composition, cured film manufactured using the composition, display device including the cured film

[0001] The present invention relates to a curable composition, a cured film manufactured using the composition, and a display device including the cured film.

[0002]

[0003] In the case of general quantum dots, the solvents in which they can be dispersed are limited due to their hydrophobic surface characteristics, and as a result, there are many difficulties in introducing them into polar systems such as binders or curable monomers.

[0004] For example, even in the case of quantum dot ink compositions that are being actively researched, in the initial stages, they were relatively low in polarity and could only be dispersed in solvents used in highly hydrophobic curable compositions. For this reason, it was difficult to include quantum dots in an amount exceeding 20 wt% of the total composition, making it impossible to increase the ink's luminous efficiency beyond a certain level. In addition, even if quantum dots were added and dispersed to increase luminous efficiency, the viscosity exceeded the range for ink-jetting, making it impossible to satisfy the processability.

[0005] In addition, in order to implement a viscosity range that allows ink-jetting, a method of lowering the ink solids content by including a solvent of 50 wt% or more relative to the total composition has been used. This method also provides somewhat satisfactory results in terms of viscosity, but it has the disadvantage of being difficult to apply to actual processes due to problems such as nozzle drying due to solvent volatilization during ink-jetting, nozzle clogging, and a decrease in film thickness over time after ink-jetting, as well as a severe thickness deviation after curing.

[0006] Therefore, the solvent-free type of quantum dot ink that does not contain a solvent is the most desirable form for application to actual processes, and the current technology for applying quantum dots themselves to solvent-based compositions is now considered to have reached its limits.

[0007] In the case of solvent-free curable compositions (quantum dot ink compositions), due to the characteristic of containing an excessive amount of polymerizable compounds, problems such as clogging and poor ejection due to nozzle drying caused by volatility, and reduction in single-film thickness due to volatilization of the jetted ink composition within the pattern barrier pixels occur. Therefore, efforts are being made from various angles to improve the optical properties of solvent-free curable compositions. In general, a method of increasing the content of inorganic substances is used to improve the optical properties of solvent-free curable compositions, but the problem is that the reflectance increases as the content of inorganic substances increases. In other words, the improvement of optical properties of solvent-free curable compositions and the reduction of reflectance are in a trade-off relationship, and the need for a technology that can improve the two properties simultaneously (improvement of optical properties and reduction of reflectance) is gradually increasing.

[0008]

[0009] One embodiment is to provide a curable composition capable of improving light absorption and light efficiency.

[0010] Another embodiment is to provide a cured film manufactured using the curable composition.

[0011] Another embodiment is to provide a display device including the cured film.

[0012]

[0013] One embodiment provides a curable composition comprising (A) a quantum dot; and (B) a polymerizable compound, wherein the polymerizable compound has a refractive index of 1.5 or greater and a viscosity of 10 cps or greater, the curable composition comprising a first polymerizable compound comprising a benzene ring, and a second polymerizable compound having a structure different from the first polymerizable compound and comprising a thiophene ring or a furan ring.

[0014] The above first polymerizable compound may have a refractive index of 1.56 or more.

[0015] The above first polymerizable compound can be represented by the following chemical formula 1.

[0016] [Chemical Formula 1]

[0017]

[0018] In the above chemical formula 1,

[0019] X 1 and X 2 are each independently an oxygen atom or a sulfur atom,

[0020] R 1 and R 2 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0021] L 1 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, or a combination thereof.

[0022] The above chemical formula 1 can be represented by the following chemical formula 1-1.

[0023] [Chemical Formula 1-1]

[0024]

[0025] In the above chemical formula 1-1,

[0026] X 1 and X 2are each independently an oxygen atom or a sulfur atom,

[0027] R 1 and R 2 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0028] L 1 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, or a combination thereof.

[0029] The above first polymerizable compound can be represented by the following chemical formula 1-1-1 or chemical formula 1-1-2.

[0030] [Chemical Formula 1-1-1]

[0031]

[0032] [Chemical Formula 1-1-2]

[0033]

[0034] The above second polymerizable compound can be represented by the following chemical formula 2.

[0035] [Chemical Formula 2]

[0036]

[0037] In the above chemical formula 2,

[0038] X 3 and X 4 are each independently an oxygen atom or a sulfur atom,

[0039] R 3 is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0040] L 2 is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

[0041] L 3is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, or a combination thereof,

[0042] n is an integer from 1 to 4.

[0043] The above chemical formula 2 can be represented by the following chemical formula 2-1.

[0044] [Chemical Formula 2-1]

[0045]

[0046] In the above chemical formula 2-1,

[0047] X 3 and X 4 are each independently an oxygen atom or a sulfur atom,

[0048] R 3 is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0049] L 2 is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

[0050] L 3 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, or a combination thereof.

[0051] The second polymerizable compound may include at least one selected from the group consisting of the following chemical formulas 2-1-1 to 2-1-3.

[0052] [Chemical Formula 2-1-1]

[0053]

[0054] [Chemical Formula 2-1-2]

[0055]

[0056] [Chemical Formula 2-1-3]

[0057]

[0058] The second polymerizable compound may have a refractive index of 1.5 or more and a viscosity of less than 10 cPs.

[0059] The first polymerizable compound and the second polymerizable compound may be included in a weight ratio of 1:9 to 9:1.

[0060] The above curable composition may be a solvent-free curable composition.

[0061] The solvent-free curable composition may include 5 to 60 wt% of the quantum dot and 40 to 95 wt% of the polymerizable compound, based on the total amount of the solvent-free curable composition.

[0062] The above curable composition may further include a polymerization initiator, a light diffusing agent, a polymerization inhibitor, or a combination thereof.

[0063] The light diffusing agent may include barium sulfate, calcium carbonate, titanium dioxide, zirconia, or a combination thereof.

[0064] The above curable composition may further comprise a solvent.

[0065] The curable composition may include, based on the total weight of the curable composition, 1 wt% to 40 wt% of the quantum dot; 1 wt% to 20 wt% of the polymerizable compound; and 40 wt% to 80 wt% of the solvent.

[0066] The curable composition may further include malonic acid; 3-amino-1,2-propanediol; a silane coupling agent; a leveling agent; a fluorinated surfactant; or a combination thereof.

[0067] Another embodiment provides a cured film manufactured using the curable composition.

[0068] Another embodiment provides a display device including the cured film.

[0069] Specific details of other aspects of the present invention are included in the detailed description below.

[0070]

[0071] By including a novel high-refractive index and high-viscosity (meth)acrylate compound in a quantum dot-containing curable composition, the light absorption rate and light efficiency of the quantum dot-containing curable composition can be improved, and thus, in the case of a display panel manufactured using the same, the brightness of pixels can be improved and external light reflection can be reduced, thereby improving the brightness of the front side.

[0072]

[0073] Hereinafter, embodiments of the present invention will be described in detail. However, these are presented as examples and are not intended to limit the present invention. The present invention is defined solely by the scope of the claims set forth below.

[0074] Unless otherwise specified herein, "alkyl group" means a C1 to C20 alkyl group, "alkenyl group" means a C2 to C20 alkenyl group, "cycloalkenyl group" means a C3 to C20 cycloalkenyl group, "heterocycloalkenyl group" means a C3 to C20 heterocycloalkenyl group, "aryl group" means a C6 to C20 aryl group, "arylalkyl group" means a C6 to C20 arylalkyl group, "alkylene group" means a C1 to C20 alkylene group, "arylene group" means a C6 to C20 arylene group, "alkylarylene group" means a C6 to C20 alkylarylene group, "heteroarylene group" means a C3 to C20 heteroarylene group, and "alkoxylene group" means a C1 to C20 It refers to an alkoxylene group.

[0075] Unless otherwise specified herein, "substitution" means that at least one hydrogen atom is substituted with a halogen atom (F, Cl, Br, I), a hydroxy group, a C1 to C20 alkoxy group, a nitro group, a cyano group, an amine group, an imino group, an azido group, an amidino group, a hydrazino group, a hydrazono group, a carbonyl group, a carbamyl group, a thiol group, an ester group, an ether group, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid or a salt thereof, a C1 to C20 alkyl group, a C2 to C20 alkenyl group, a C2 to C20 alkynyl group, a C6 to C20 aryl group, a C3 to C20 cycloalkyl group, a C3 to C20 cycloalkenyl group, a C3 to C20 cycloalkynyl group, a C2 to C20 heterocycloalkyl group, a C2 to C20 heterocycloalkenyl group, a C2 to C20 It means substituted with a C20 heterocycloalkynyl group, a C3 to C20 heteroaryl group, or a combination thereof.

[0076] Additionally, unless otherwise specified herein, “hetero” means that the chemical formula contains at least one heteroatom of at least one of N, O, S, and P.

[0077] Additionally, unless otherwise specified herein, “(meth)acrylate” means both “acrylate” and “methacrylate”, and “(meth)acrylic acid” means both “acrylic acid” and “methacrylic acid”.

[0078] Unless otherwise specified herein, “combination” means mixing or copolymerization.

[0079] Unless otherwise defined in the chemical formulas in this specification, if a chemical bond is not drawn at a position where a chemical bond should be drawn, it means that a hydrogen atom is bonded at that position.

[0080] Additionally, unless otherwise specified herein, “*” means a portion connected to the same or different atoms or chemical formulas.

[0081] Below, each component constituting the curable composition according to one embodiment is specifically described.

[0082]

[0083] polymeric compounds

[0084] According to one embodiment, a quantum dot-containing curable composition comprises a polymerizable compound having a high refractive index and high viscosity (a first polymerizable compound), specifically a compound having a refractive index of 1.5 or more and a viscosity of 10 cps or more, and including a benzene ring (a first polymerizable compound), more specifically a compound having a refractive index of 1.56 or more, wherein the benzene ring has two substituents, one of the substituents necessarily including a (meth)acrylate group at the terminal (a first polymerizable compound), and a second polymerizable compound having a structure different from that of the first polymerizable compound and including a thiophene ring or a furan ring. By mixing and using the compound, it is possible to improve the light absorption rate and light efficiency of the curable composition according to one embodiment, and ultimately provide a display panel having improved front-side brightness. It is believed that all of these effects are due to the configuration in which the first polymerizable compound having high refractive index and high viscosity characteristics is mixed and used with the second polymerizable compound.

[0085]

[0086] (First polymerizable compound)

[0087] A quantum dot-containing curable composition according to one embodiment includes a compound having a high refractive index and a high viscosity as a first polymerizable compound among polymerizable compounds, specifically having a refractive index of 1.5 or more and a viscosity of 10 cps or more, and a compound including a benzene ring, more specifically having a refractive index of 1.56 or more, wherein the benzene ring has two substituents, one of the substituents necessarily includes a (meth)acrylate group at the terminal, and the other includes a compound that does not include a (meth)acrylate group, thereby bringing about an effect of improving the light absorption rate and light efficiency of the curable composition according to one embodiment.

[0088] For example, the first polymerizable compound may be represented by the following chemical formula 1.

[0089] [Chemical Formula 1]

[0090]

[0091] In the above chemical formula 1,

[0092] X 1 and X 2 are each independently an oxygen atom or a sulfur atom,

[0093] R 1 and R 2 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0094] L 1 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, or a combination thereof.

[0095] Green quantum dot-containing curable compositions have relatively low absorption (abs.) and enhanced quantum efficiency (EQE), and nearly twice as high reflectance, compared to red quantum dot-containing curable compositions. Therefore, the technological challenges of improving the brightness of green quantum dot pixels in display panels and reducing external light reflection to further improve the brightness on the front side remain unresolved.

[0096] The inventors of the present invention have clearly recognized the above-mentioned problems, and have conducted long-term related research and hundreds of trials and errors to improve the optical properties and reduce the reflectance of a curable composition containing green quantum dots. As a result, they have solved the above-mentioned technical problem by applying a compound represented by the above-mentioned chemical formula 1, which has a refractive index of 1.5 or more and a viscosity of 10 cps or more, and includes a benzene ring, as a first polymerizable compound, and mixing and using this with a second polymerizable compound described below.

[0097] In general, the main method used to improve the optical properties of green quantum dot-containing curable compositions has been to increase the content of inorganic substances, and conversely, the main method used to reduce the reflectance of the green quantum dot-containing curable composition has been to reduce the content of inorganic substances. Therefore, the improvement of optical properties and the reduction of reflectance are properties that are in opposition to each other, that is, in a trade-off relationship, and it has been very difficult to achieve both properties simultaneously.

[0098] According to one embodiment, by applying a compound containing a benzene ring substituted with a substituent including a (meth)acrylate group at the terminal, which has a high refractive index of 1.5 or more and a viscosity of 10 cps or more, represented by the above chemical formula 1, as a first polymerizable compound to the composition of a curable composition, it is possible to simultaneously achieve the effects of improving optical properties and reducing reflectance in a curable composition containing green quantum dots in addition to a curable composition containing red quantum dots.

[0099] Specifically, the improvement in optical properties is due to the simultaneous high refractive index and viscosity of the first polymerizable compound. For example, the compound represented by the above chemical formula 1 may have a refractive index of 1.5 or higher, for example, a refractive index of 1.5 or higher, for example, a refractive index of 1.56 to 1.7, and at the same time, a viscosity of 10 cps or higher, for example, a viscosity of 10 cps to 100 cps, and thus, the optical properties of a quantum dot-containing curable composition comprising the compound as a polymerizable compound may be significantly improved.

[0100] Furthermore, the reflectance reduction effect is that, when the curable composition according to one embodiment is thermally cured, the compound represented by the chemical formula 1 used as the polymerizable compound is thermally decomposed to reveal a thiol group, and the thiol-ene reaction between the carbon-carbon double bond of the (meth)acrylate group and the thiol group is easily induced by the thiol group, thereby promoting surface curing of the thermally cured single film of the curable composition according to one embodiment, and ultimately, the reflectance, particularly the diffuse reflectance, of the cured film can be significantly reduced. For example, the diffuse reflectance of the cured film can be reduced to 55% or less, for example, 50% to 55%.

[0101] For example, the above chemical formula 1 can be represented by the following chemical formula 1-1. When the positions of the two substituents substituted on the benzene ring are as described above, it can be more advantageous in terms of improving optical properties and reducing reflectance.

[0102] [Chemical Formula 1-1]

[0103]

[0104] In the above chemical formula 1-1,

[0105] X 1 and X 2 are each independently an oxygen atom or a sulfur atom,

[0106] R 1 and R 2 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0107] L 1 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, or a combination thereof.

[0108] For example, the first polymerizable compound may be represented by the following chemical formula 1-1-1 or chemical formula 1-1-2, but is not necessarily limited thereto.

[0109] [Chemical Formula 1-1-1]

[0110]

[0111] [Chemical Formula 1-1-2]

[0112]

[0113] (second polymerizable compound)

[0114] According to one embodiment, a curable composition further comprises, together with the first polymerizable compound, a second polymerizable compound having a different structure from the first polymerizable compound and including a thiophene ring or a furan ring. This can maximize the effect of improving the optical properties and reducing the reflectance of the curable composition.

[0115] For example, the second polymerizable compound may be represented by the following chemical formula 2.

[0116] [Chemical Formula 2]

[0117]

[0118] In the above chemical formula 2,

[0119] X 3 and X 4 are each independently an oxygen atom or a sulfur atom,

[0120] R 3 is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0121] L2 is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

[0122] L 3 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, or a combination thereof,

[0123] n is an integer from 1 to 4.

[0124] For example, in the above chemical formula 2, n can be an integer of 1.

[0125] For example, the above chemical formula 2 can be represented by the following chemical formula 2-1.

[0126] [Chemical Formula 2-1]

[0127]

[0128] In the above chemical formula 2-1,

[0129] X 3 and X 4 are each independently an oxygen atom or a sulfur atom,

[0130] R 3 is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group,

[0131] L 2 is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

[0132] L 3 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, or a combination thereof.

[0133] For example, the second polymerizable compound may include at least one selected from the group consisting of the following chemical formulas 2-1-1 to 2-1-3, but this is merely an example, and the second polymerizable compound is not limited to the following chemical formulas, but when the chemical formula 2 is represented by any one selected from the group consisting of the following chemical formulas 2-1 to 2-3, it may be very advantageous to simultaneously implement the effect of improving the optical properties and reducing the reflectance (diffuse reflectance) of the curable composition according to one embodiment.

[0134] [Chemical Formula 2-1-1]

[0135]

[0136] [Chemical Formula 2-1-2]

[0137]

[0138] [Chemical Formula 2-1-3]

[0139]

[0140] The second polymerizable compound may have a refractive index of 1.5 or more and a viscosity of less than 10 cPs.

[0141] For example, the first polymerizable compound and the second polymerizable compound may be included in a weight ratio of 1:9 to 9:1, for example, a weight ratio of 5:5 to 9:1.

[0142] For example, the first polymerizable compound may be included in a greater amount than the second polymerizable compound.

[0143] For example, the first polymerizable compound and the second polymerizable compound may be included in a weight ratio of 6:4 to 9:1.

[0144] When the first polymerizable compound is included in a larger amount than the second polymerizable compound, for example, when the first polymerizable compound and the second polymerizable compound are included in a weight ratio of 6:4 to 9:1, the simultaneous improvement of two effects, namely, improvement of optical properties and reduction of reflectance, can be maximized.

[0145] (Third polymerizable compound)

[0146] For example, the polymerizable compound may further include a third polymerizable compound having a structure different from the first polymerizable compound and the second polymerizable compound.

[0147] For example, the third polymerizable compound may be represented by the following chemical formula 3.

[0148] [Chemical Formula 3]

[0149]

[0150] In the above chemical formula 3,

[0151] L 4 is a substituted or unsubstituted C1 to C10 alkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group or an ether group (*-O-*),

[0152] L 5 and L 6 are each independently a single bond or a substituted or unsubstituted C1 to C10 alkylene group,

[0153] R 4 and R 5 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group.

[0154] According to one embodiment, a curable composition can simultaneously achieve the effects of improving optical properties and reducing reflectance of the curable composition by including a compound represented by the above chemical formula 1, a compound represented by the above chemical formula 2, and a compound represented by the above chemical formula 3 as a polymerizable compound, together with a high refractive index / high viscosity compound represented by the above chemical formula 1, as in the case of using the compounds represented by the above chemical formula 1 and chemical formula 2 in combination.

[0155] For example, the compound represented by the above chemical formula 3 may have a refractive index of less than 1.5 or a viscosity of less than 10 cps. When the compound represented by the above chemical formula 3 has a refractive index of 1.5 or more and a viscosity of 10 cps or more, it is advantageous for improving optical properties, but may be disadvantageous in terms of reducing reflectance.

[0156] For example, the compound represented by the above chemical formula 3 may be represented by the following chemical formula 3-1, chemical formula 3-2 or 3-3, but is not necessarily limited thereto.

[0157] [Chemical Formula 3-1]

[0158]

[0159] [Chemical Formula 3-2]

[0160]

[0161] [Chemical Formula 3-3]

[0162]

[0163] For example, the polymerizable compound may further include, in addition to the first polymerizable compound, the second polymerizable compound, and the third polymerizable compound, ethylene glycol diacrylate, triethylene glycol diacrylate, 1,4-butanediol diacrylate, neopentyl glycol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, pentaerythritol hexaacrylate, bisphenol A diacrylate, trimethylolpropane triacrylate, novolac epoxy acrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, propylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, or a combination thereof.

[0164] In addition, in addition to the polymerizable compound, a monomer generally used in conventional thermosetting or photocurable compositions may be further used, and for example, the monomer may further include an oxetane-based compound such as bis[1-ethyl(3-oxetanyl)]methyl ether.

[0165] The polymerizable compound may be included in an amount of 40 wt% to 95 wt%, for example, 50 wt% to 90 wt%, based on the total amount of the solvent-free curable composition. When the content of the polymerizable compound is within the above range, it is possible to manufacture a solvent-free curable composition having a viscosity that allows ink jetting, and further, quantum dots in the manufactured solvent-free curable composition can have excellent dispersibility, so that optical properties can also be improved.

[0166] For example, the polymerizable compound may have a molecular weight of 170 g / mol to 1,000 g / mol. When the molecular weight of the polymerizable compound is within the above range, the viscosity of the composition may not be increased without impairing the optical properties of the quantum dots, which may be advantageous for ink-jetting.

[0167] In addition, when the curable composition includes a solvent, the polymerizable compound may be included in an amount of 1 wt% to 20 wt%, 1 wt% to 15 wt%, for example, 5 wt% to 15 wt%, based on the total amount of the curable composition. When the polymerizable compound is included within the above range, the optical properties of the quantum dot may be improved.

[0168]

[0169] quantum dots

[0170] For example, the quantum dot may have a maximum fluorescence emission wavelength between 500 nm and 680 nm.

[0171] For example, when the curable composition according to one embodiment is a solvent-free curable composition, the quantum dots may be included in an amount of 5 wt% to 60 wt%, such as 10 wt% to 60 wt%, such as 20 wt% to 60 wt%, such as 30 wt% to 50 wt%. When the quantum dots are included within the above range, high light retention and light efficiency can be achieved even after curing.

[0172] For example, when the curable composition according to one embodiment is a curable composition including a solvent, the quantum dots may be included in an amount of 1 wt% to 40 wt%, for example, 3 wt% to 30 wt%, based on the total amount of the curable composition. When the quantum dots are included within the above range, the photoconversion rate is excellent and the pattern characteristics and development characteristics are not impaired, so that excellent processability can be achieved.

[0173] For example, the quantum dot may absorb light in a wavelength range of 360 nm to 780 nm, for example, a wavelength range of 400 nm to 780 nm, and emit fluorescence in a wavelength range of 500 nm to 700 nm, for example, 500 nm to 580 nm, or emit fluorescence in a wavelength range of 600 nm to 680 nm. That is, the quantum dot may have a maximum fluorescence emission wavelength (fluorescence λ) in a wavelength range of 500 nm to 680 nm. em) can have.

[0174] The above quantum dots may each independently have a full width at half maximum (FWHM) of 20 nm to 100 nm, for example, 20 nm to 50 nm. When the quantum dots have a full width at half maximum (FWHM) within the above range, the color purity is high, thereby increasing the color reproducibility when used as a color material in a color filter.

[0175] The above quantum dots may each independently be organic, inorganic, or a hybrid (hybrid) of organic and inorganic materials.

[0176] The above quantum dots can each independently be composed of a core and a shell surrounding the core, and the core and shell can each independently have a structure such as a core, core / shell, core / first shell / second shell, alloy, alloy / shell, etc., made of group II-IV, group III-V, etc., but are not limited thereto.

[0177] For example, the core may include at least one material selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, HgS, HgSe, HgTe, GaN, GaP, GaAs, InP, InAs, and alloys thereof, but is not necessarily limited thereto. The shell surrounding the core may include at least one material selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, HgSe, and alloys thereof, but is not necessarily limited thereto.

[0178] In one implementation example, since environmental concerns have been increasing significantly worldwide and regulations on toxic substances have been strengthened, environmentally friendly non-cadmium-based luminescent materials (such as InP / ZnS, InP / ZeSe / ZnS) with somewhat lower quantum yields were used instead of luminescent materials having cadmium-based cores, but the present invention is not limited thereto.

[0179] In the case of the quantum dot of the above core / shell structure, the size (average particle diameter) of each entire quantum dot including the shell may be 1 nm to 15 nm, for example, 5 nm to 15 nm.

[0180] For example, the quantum dots may each independently include red quantum dots, green quantum dots, or a combination thereof. The red quantum dots may each independently have an average particle diameter of 10 nm to 15 nm. The green quantum dots may each independently have an average particle diameter of 5 nm to 8 nm.

[0181] Meanwhile, in order to ensure dispersion stability of the quantum dots, the curable composition according to one embodiment may further include a dispersant. The dispersant helps to uniformly disperse the photoconversion material such as quantum dots within the curable composition, and any nonionic, anionic, or cationic dispersant may be used. Specifically, polyalkylene glycol or its esters, polyoxyalkylene, polyhydric alcohol ester alkylene oxide adducts, alcohol alkylene oxide adducts, sulfonic acid esters, sulfonic acid salts, carboxylic acid esters, carboxylic acid salts, alkyl amide alkylene oxide adducts, alkyl amines, etc. may be used, and these may be used alone or in combination of two or more. The dispersant may be used in an amount of 0.1 wt% to 100 wt%, for example, 10 wt% to 20 wt%, relative to the solid content of the photoconversion material such as quantum dots.

[0182] For example, the quantum dot may be a quantum dot surface-modified with a ligand having a polar group, for example, a ligand having a high affinity for the polymerizable compound. In the case of a quantum dot surface-modified as described above, it is very easy to prepare a high-concentration or high-concentration quantum dot dispersion (improving the dispersibility of the quantum dot in the polymerizable compound), which can have a significant effect on improving light efficiency, and in particular, it can be advantageous in implementing a solvent-free curable composition.

[0183] For example, the ligand having the polar group may have a structure having high affinity with the chemical structure of the polymerizable compound.

[0184] For example, the ligand having the polar group may be represented by any one of the compounds represented by the following chemical formulas A to Q, but is not necessarily limited thereto.

[0185] [Chemical Formula A]

[0186]

[0187] [Chemical Formula B]

[0188]

[0189] [Chemical Formula C]

[0190]

[0191] [Chemical Formula D]

[0192]

[0193] (In the above chemical formula D, m1 is an integer from 0 to 10.)

[0194] [Chemical Formula E]

[0195]

[0196] [Chemical formula F]

[0197]

[0198] [Chemical formula G]

[0199]

[0200] [Chemical formula H]

[0201]

[0202] [Chemical Formula I]

[0203]

[0204] [Chemical formula J]

[0205]

[0206] [Chemical formula K]

[0207]

[0208] [Chemical formula L]

[0209]

[0210] [Chemical formula M]

[0211]

[0212] [Chemical formula N]

[0213]

[0214] [chemical formula O]

[0215]

[0216] [chemical formula P]

[0217]

[0218] [Chemical formula Q]

[0219]

[0220] When the above ligand is used, surface modification of quantum dots becomes easier, and when quantum dots surface-modified with the above ligand are added to the above-mentioned polymerizable compound and stirred, a very transparent dispersion can be obtained, which serves as a measure of confirming that the surface modification of the quantum dots is very successful.

[0221]

[0222] light diffuser

[0223] The curable composition according to one embodiment may further comprise a light diffusing agent.

[0224] For example, the light diffusing agent may include barium sulfate (BaSO4), calcium carbonate (CaCO3), titanium dioxide (TiO2), zirconia (ZrO2), or a combination thereof.

[0225] The above-described light diffusing agent reflects light not absorbed by the aforementioned quantum dots and allows the reflected light to be reabsorbed by the quantum dots. In other words, the above-described light diffusing agent can increase the amount of light absorbed by the quantum dots, thereby increasing the photoconversion efficiency of the curable composition.

[0226] The above light diffusing agent has an average particle diameter (D 50 ) may be 150 nm to 250 nm, and specifically, 180 nm to 230 nm. When the average particle diameter of the light diffusing agent is within the above range, it may have a better light diffusing effect and increase the light conversion efficiency.

[0227] The light diffusing agent may be included in an amount of 1 wt% to 20 wt%, for example, 2 wt% to 15 wt%, for example, 3 wt% to 10 wt%, based on the total amount of the curable composition. If the light diffusing agent is included in an amount of less than 1 wt% based on the total amount of the curable composition, it is difficult to expect an effect of improving the light conversion efficiency due to the use of the light diffusing agent, and if it is included in an amount exceeding 20 wt%, there is a concern that quantum dot sedimentation problems may occur.

[0228]

[0229] polymerization initiator

[0230] The curable composition according to one embodiment may further comprise a polymerization initiator, for example, a photopolymerization initiator, a thermal polymerization initiator, or a combination thereof.

[0231] The above photopolymerization initiator is an initiator generally used in a photosensitive resin composition, and examples thereof include, but are not limited to, acetophenone-based compounds, benzophenone-based compounds, thioxanthone-based compounds, benzoin-based compounds, triazine-based compounds, oxime-based compounds, and aminoketone-based compounds.

[0232] Examples of the above acetophenone compounds include 2,2'-diethoxy acetophenone, 2,2'-dibutoxy acetophenone, 2-hydroxy-2-methylpropiophenone, pt-butyltrichloro acetophenone, pt-butyldichloro acetophenone, 4-chloro acetophenone, 2,2'-dichloro-4-phenoxy acetophenone, 2-methyl-1-(4-(methylthio)phenyl)-2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butan-1-one, etc.

[0233] Examples of the above benzophenone compounds include benzophenone, benzoyl benzoate, methyl benzoyl benzoate, 4-phenyl benzophenone, hydroxybenzophenone, acrylated benzophenone, 4,4'-bis(dimethylamino)benzophenone, 4,4'-bis(diethylamino)benzophenone, 4,4'-dimethylaminobenzophenone, 4,4'-dichlorobenzophenone, 3,3'-dimethyl-2-methoxybenzophenone, etc.

[0234] Examples of the above thioxanthone compounds include thioxanthone, 2-methylthioxanthone, isopropyl thioxanthone, 2,4-diethyl thioxanthone, 2,4-diisopropyl thioxanthone, 2-chlorothioxanthone, etc.

[0235] Examples of the above benzoin compounds include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzyldimethyl ketal, etc.

[0236] Examples of the above triazine compounds include 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis(trichloromethyl)-s-triazine, 2-(3',4'-dimethoxystyryl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4'-methoxynaphthyl)-4,6-bis(trichloromethyl)-s-triazine, 2-(p-methoxyphenyl)-4,6-bis(trichloromethyl)-s-triazine, 2-(p-tolyl)-4,6-bis(trichloromethyl)-s-triazine, 2-biphenyl-4,6-bis(trichloromethyl)-s-triazine, bis(trichloromethyl)-6-styryl-s-triazine, Examples thereof include 2-(naphtho-1-yl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4-methoxynaphtho-1-yl)-4,6-bis(trichloromethyl)-s-triazine, 2-4-bis(trichloromethyl)-6-piperonyl-s-triazine, and 2-4-bis(trichloromethyl)-6-(4-methoxystyryl)-s-triazine.

[0237] Examples of the above oxime compounds include O-acyloxime compounds, 2-(O-benzoyloxime)-1-[4-(phenylthio)phenyl]-1,2-octanedione, 1-(O-acetyloxime)-1-[9-ethyl-6-(2-methylbenzoyl)-9H-carbazol-3-yl]ethanone, O-ethoxycarbonyl-α-oxyamino-1-phenylpropan-1-one, etc. Specific examples of the O-acyl oxime compounds include 1,2-octanedione, 2-dimethylamino-2-(4-methylbenzyl)-1-(4-morpholin-4-yl-phenyl)-butan-1-one, 1-(4-phenylsulfanylphenyl)-butane-1,2-dione-2-oxime-O-benzoate, 1-(4-phenylsulfanylphenyl)-octane-1,2-dione-2-oxime-O-benzoate, 1-(4-phenylsulfanylphenyl)-octane-1-oneoxime-O-acetate, and 1-(4-phenylsulfanylphenyl)-butan-1-oneoxime-O-acetate.

[0238] Examples of the above aminoketone compounds include 2-Benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone-1.

[0239] In addition to the above compound, the photopolymerization initiator may also include a carbazole compound, a diketone compound, a sulfonium borate compound, a diazo compound, an imidazole compound, a biimidazole compound, etc.

[0240] The above photopolymerization initiator may also be used together with a photosensitizer that causes a chemical reaction by absorbing light, becoming excited, and then transferring the energy.

[0241] Examples of the above photosensitizer include tetraethylene glycol bis-3-mercapto propionate, pentaerythritol tetrakis-3-mercapto propionate, dipentaerythritol tetrakis-3-mercapto propionate, and the like.

[0242] Examples of the above thermal polymerization initiator include peroxides, specifically benzoyl peroxide, dibenzoyl peroxide, lauryl peroxide, dilauryl peroxide, di-tert-butyl peroxide, cyclohexane peroxide, methyl ethyl ketone peroxide, hydroperoxides (e.g., tert-butyl hydroperoxide, cumene hydroperoxide), dicyclohexyl peroxydicarbonate, 2,2-azo-bis(isobutyronitrile), t-butyl perbenzoate, etc., and 2,2'-azobis-2-methylpropionitrile, etc., but are not necessarily limited thereto, and any one widely known in the art can be used.

[0243] The above polymerization initiator may be included in an amount of 0.1 wt% to 5 wt%, for example, 1 wt% to 4 wt%, based on the total amount of the curable composition. When the polymerization initiator is included within the above range, sufficient curing can occur upon exposure to light or thermal curing, thereby obtaining excellent reliability, and a decrease in transmittance due to unreacted initiator can be prevented, thereby preventing a decrease in the optical properties of the quantum dot.

[0244]

[0245] binder resin

[0246] The curable composition according to one embodiment may further comprise a binder resin.

[0247] The above binder resin may include an acrylic resin, a cardo resin, an epoxy resin, or a combination thereof.

[0248] The above acrylic resin may be a copolymer of a first ethylenically unsaturated monomer and a second ethylenically unsaturated monomer copolymerizable therewith, and may be a resin including one or more acrylic repeating units.

[0249] Specific examples of the above acrylic binder resin include, but are not limited to, polybenzyl methacrylate, (meth)acrylic acid / benzyl methacrylate copolymer, (meth)acrylic acid / benzyl methacrylate / styrene copolymer, (meth)acrylic acid / benzyl methacrylate / 2-hydroxyethyl methacrylate copolymer, (meth)acrylic acid / benzyl methacrylate / styrene / 2-hydroxyethyl methacrylate copolymer, and the like. These may be used singly or in combination of two or more.

[0250] The weight average molecular weight of the above acrylic resin may be 5,000 g / mol to 15,000 g / mol. When the weight average molecular weight of the above acrylic resin is within the above range, the acrylic resin has excellent adhesion to the substrate, good physical and chemical properties, and appropriate viscosity.

[0251] The acid value of the above acrylic resin may be 80 mgKOH / g to 130 mgKOH / g. When the acid value of the above acrylic resin is within the above range, the resolution of the pixel pattern is excellent.

[0252] The above-mentioned cardo resin may be one used in a conventional curable resin (or photosensitive resin) composition, and may be, for example, one presented in Korean Patent Publication No. 10-2018-0067243, but is not limited thereto.

[0253] The above cardo resin may be, for example, a fluorene-containing compound such as 9,9-bis(4-oxiranylmethoxyphenyl)fluorene; anhydride compounds such as benzenetetracarboxylic acid dianhydride, naphthalenetetracarboxylic acid dianhydride, biphenyltetracarboxylic acid dianhydride, benzophenonetetracarboxylic acid dianhydride, pyromellitic dianhydride, cyclobutanetetracarboxylic acid dianhydride, perylenetetracarboxylic acid dianhydride, tetrahydrofurantetracarboxylic acid dianhydride, and tetrahydrophthalic acid anhydride; a glycol compound such as ethylene glycol, propylene glycol, and polyethylene glycol; an alcohol compound such as methanol, ethanol, propanol, n-butanol, cyclohexanol, and benzyl alcohol; a solvent compound such as propylene glycol methyl ethyl acetate, and N-methylpyrrolidone; a phosphorus compound such as triphenylphosphine; And it can be prepared by mixing two or more of amine or ammonium salt compounds such as tetramethylammonium chloride, tetraethylammonium bromide, benzyldiethylamine, triethylamine, tributylamine, and benzyltriethylammonium chloride.

[0254] The weight average molecular weight of the above cardo resin may be 500 g / mol to 50,000 g / mol, for example, 1,000 g / mol to 30,000 g / mol. When the weight average molecular weight of the above cardo resin is within the above range, pattern formation is good without residue when producing a cured film, and there is no loss of film thickness when developing the curable composition, and a good pattern can be obtained.

[0255] When the above binder resin is a cardo-based resin, the developability of a curable composition containing the same, particularly a photosensitive resin composition, is excellent, and the sensitivity during photocuring is good, resulting in excellent fine pattern formation ability.

[0256] The above epoxy resin is a monomer or oligomer that can be polymerized by heat, and may include compounds having carbon-carbon unsaturated bonds and carbon-carbon cyclic bonds.

[0257] The above epoxy resin may include, but is not necessarily limited to, bisphenol A type epoxy resin, bisphenol F type epoxy resin, phenol novolac type epoxy resin, cyclic aliphatic epoxy resin, and aliphatic polyglycidyl ether.

[0258] Commercially available products of these compounds include bisphenyl epoxy resins, YX4000, YX4000H, YL6121H, YL6640, YL6677 from Yukashell Epoxy Co., Ltd.; cresol novolac type epoxy resins, EOCN-102, EOCN-103S, EOCN-104S, EOCN-1020, EOCN-1025, EOCN-1027 from Nippon Kayaku Co., Ltd. and Epicoat 180S75 from Yukashell Epoxy Co., Ltd.; bisphenol A type epoxy resins, Epicoat 1001, 1002, 1003, 1004, 1007, 1009, 1010, and 828 from Yukashell Epoxy Co., Ltd.; Bisphenol F type epoxy resins include Epicoat 807 and 834 from Yukashell Epoxy Co., Ltd.; Phenol novolak type epoxy resins include Epicoat 152, 154, 157H65 from Yukashell Epoxy Co., Ltd. and EPPN 201, 202 from Nippon Kayaku Co., Ltd.; Other cyclic aliphatic epoxy resins include CY175, CY177 and CY179 from CIBA-GEIGY AG, ERL-4234, ERL-4299, ERL-4221 and ERL-4206 from UCC, Shodyne 509 from Showa Denko Co., Ltd., Araldite CY-182, CY-192 and CY-184 from CIBA-GEIGY AG, Epichron 200 and 400 from Dainippon Ink & Kogyo Co., Ltd., Epicoat 871, 872 and EP1032H60 from Yukashell Epoxy Co., Ltd., and ED-5661 and ED-5662 from Celanese Coating Co., Ltd.; Examples of aliphatic polyglycidyl ethers include Epicoat 190P and 191P from Yukashell Epoxy Co., Ltd., Epolite 100MF from Kyoeisha Yushi Chemical Co., Ltd., and Epiol TMP from Nippon Yushi Co., Ltd.

[0259] For example, when the curable composition according to one embodiment is a solvent-free curable composition, the binder resin may be included in an amount of 0.5 wt% to 10 wt%, for example, 1 wt% to 5 wt%, based on the total amount of the curable composition. In this case, the heat resistance and chemical resistance of the solvent-free curable composition can be improved, and the storage stability of the composition can also be improved.

[0260] For example, when the curable composition according to one embodiment is a curable composition including a solvent, the binder resin may be included in an amount of 1 wt% to 30 wt%, for example, 3 wt% to 20 wt%, based on the total amount of the curable composition. In this case, excellent pattern characteristics, heat resistance, and chemical resistance can be improved.

[0261]

[0262] Other additives

[0263] To improve the stability and dispersibility of the quantum dots, the curable composition according to one embodiment may further include a polymerization inhibitor.

[0264] The polymerization inhibitor may include, but is not necessarily limited to, a hydroquinone-based compound, a catechol-based compound, or a combination thereof. According to one embodiment, since the curable composition further includes the hydroquinone-based compound, the catechol-based compound, or a combination thereof, crosslinking at room temperature can be prevented during exposure after printing (coating) the curable composition.

[0265] For example, the hydroquinone-based compound, catechol-based compound, or combinations thereof may include, but are not necessarily limited to, hydroquinone, methyl hydroquinone, methoxyhydroquinone, t-butyl hydroquinone, 2,5-di-t-butyl hydroquinone, 2,5-bis(1,1-dimethylbutyl) hydroquinone, 2,5-bis(1,1,3,3-tetramethylbutyl) hydroquinone, catechol, t-butyl catechol, 4-methoxyphenol, pyrogallol, 2,6-di-t-butyl-4-methylphenol, 2-naphthol, tris(N-hydroxy-N-nitrosophenylaminato-O,O')aluminium, or combinations thereof.

[0266] The above hydroquinone-based compound, catechol-based compound, or a combination thereof may be used in the form of a dispersion, and the polymerization inhibitor in the form of the dispersion may be included in an amount of 0.001 wt% to 3 wt%, for example, 0.01 wt% to 2 wt%, based on the total amount of the curable composition. When the polymerization inhibitor is included within the above range, the problem of aging at room temperature can be solved, while at the same time preventing sensitivity degradation and surface peeling.

[0267] In addition, the curable composition according to one embodiment may further include malonic acid; 3-amino-1,2-propanediol; a silane coupling agent; a leveling agent; a fluorinated surfactant; or a combination thereof to improve heat resistance and reliability.

[0268] For example, a curable composition according to one embodiment may further include a silane coupling agent having a reactive substituent such as a vinyl group, a carboxyl group, a methacryloxy group, an isocyanate group, or an epoxy group to improve adhesion to a substrate, etc.

[0269] Examples of the above silane coupling agent include trimethoxysilyl benzoic acid, γ-methacryloxypropyl trimethoxysilane, vinyl triacetoxysilane, vinyl trimethoxysilane, γ-isocyanate propyl triethoxysilane, γ-glycidoxy propyl trimethoxysilane, β-epoxycyclohexyl)ethyl trimethoxysilane, etc., and these may be used alone or in combination of two or more.

[0270] The above silane coupling agent may be included in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the curable composition. When the silane coupling agent is included within the above range, adhesion, storability, etc. are excellent.

[0271] In addition, the curable composition may further include a surfactant, such as a fluorinated surfactant, to improve coating properties and prevent defects, i.e., to improve leveling performance, as needed.

[0272] The above fluorinated surfactant may have a low weight average molecular weight of 4,000 g / mol to 10,000 g / mol, specifically, may have a weight average molecular weight of 6,000 g / mol to 10,000 g / mol. In addition, the fluorinated surfactant may have a surface tension of 18 mN / m to 23 mN / m (measured in a 0.1% propylene glycol monomethyl ether acetate (PGMEA) solution). When the weight average molecular weight and surface tension of the fluorinated surfactant are within the above ranges, the leveling performance can be further improved, and the occurrence of spots can be prevented during high-speed coating, and since the occurrence of bubbles is small and the film defects are small, it provides excellent properties to slit coating, which is a high-speed coating method.

[0273] As the above fluorinated surfactant, BM Chemie's BM-1000 ® , BM-1100 ® Mecha Pack F 142D by Dai Nippon Inki Kagaku Kogyo Co., Ltd.® , East F 172 ® , East F 173 ® , East F 183 ® Back; Prorad FC-135 from Sumitomo 3M Co., Ltd. ® , East FC-170C ® , East FC-430 ® , East FC-431 ® Saffron S-112 from Asahi Glass Co., Ltd. ® , East S-113 ® , East S-131 ® , East S-141 ® , East S-145 ® SH-28PA from Toray Silicone Co., Ltd. ® , East-190 ® , East-193 ® , SZ-6032 ® , SF-8428 ® Fluorine-based surfactants sold under the names F-482, F-484, F-478, F-554, etc. by DIC Co., Ltd. can be used.

[0274] Additionally, the curable composition according to one embodiment may use a silicone-based surfactant together with the aforementioned fluorinated surfactant. Specific examples of the silicone-based surfactant include, but are not limited to, TSF400, TSF401, TSF410, and TSF4440 from Toshiba Silicone Co., Ltd.

[0275] The surfactant, including the fluorinated surfactant, may be included in an amount of 0.01 to 5 parts by weight, for example, 0.1 to 2 parts by weight, based on 100 parts by weight of the curable composition. When the surfactant is included within the above range, the phenomenon of foreign substances occurring in the sprayed composition is reduced.

[0276] In addition, the curable composition according to one embodiment may further include a certain amount of other additives, such as an antioxidant, within a range that does not impair physical properties.

[0277]

[0278] menstruum

[0279] Meanwhile, the curable composition according to one embodiment may further include a solvent.

[0280] The solvent may be, for example, alcohols such as methanol and ethanol; glycol ethers such as ethylene glycol methyl ether, ethylene glycol ethyl ether, and propylene glycol methyl ether; cellosolve acetates such as methyl cellosolve acetate, ethyl cellosolve acetate, and diethyl cellosolve acetate; carbitols such as methylethyl carbitol, diethyl carbitol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methylethyl ether, and diethylene glycol diethyl ether; propylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate and propylene glycol propyl ether acetate; Ketones such as methyl ethyl ketone, cyclohexanone, 4-hydroxy-4-methyl-2-pentanone, methyl-n-propyl ketone, methyl-n-butyl ketone, methyl-n-amyl ketone, and 2-heptanone; saturated aliphatic monocarboxylic acid alkyl esters such as ethyl acetate, n-butyl acetate, and isobutyl acetate; lactic acid alkyl esters such as methyl lactate and ethyl lactate; hydroxyacetic acid alkyl esters such as methyl hydroxyacetate, ethyl hydroxyacetate, and butyl hydroxyacetate; acetic acid alkoxyalkyl esters such as methoxymethyl acetate, methoxyethyl acetate, methoxybutyl acetate, ethoxymethyl acetate, and ethoxyethyl acetate; 3-Hydroxypropionic acid alkyl esters such as methyl 3-hydroxypropionate and ethyl 3-hydroxypropionate; 3-alkoxypropionic acid alkyl esters such as methyl 3-methoxypropionate, ethyl 3-methoxypropionate, ethyl 3-ethoxypropionate and methyl 3-ethoxypropionate; 2-hydroxypropionic acid alkyl esters such as methyl 2-hydroxypropionate, ethyl 2-hydroxypropionate and propyl 2-hydroxypropionate; 2-alkoxypropionic acid alkyl esters such as methyl 2-methoxypropionate, ethyl 2-methoxypropionate, ethyl 2-ethoxypropionate and methyl 2-ethoxypropionate;2-Hydroxy-2-methylpropionic acid alkyl esters such as methyl 2-hydroxy-2-methylpropionate and ethyl 2-hydroxy-2-methylpropionate; 2-alkoxy-2-methylpropionic acid alkyl esters such as methyl 2-methoxy-2-methylpropionate and ethyl 2-ethoxy-2-methylpropionate; esters such as 2-hydroxyethyl propionate, 2-hydroxy-2-methylethyl propionate, hydroxyethyl acetate and methyl 2-hydroxy-3-methylbutanoate; Or there are compounds of ketone esters such as ethyl pyruvate, and also N-methylformamide, N,N-dimethylformamide, N-methylformanilide, N-methylacetamide, N,N-dimethylacetamide, N-methylpyrrolidone, dimethyl sulfoxide, benzyl ethyl ether, dihexyl ether, acetylacetone, isophorone, caproic acid, caprylic acid, 1-octanol, 1-nonanol, benzyl alcohol, benzyl acetate, ethyl benzoate, diethyl oxalate, diethyl maleate, γ-butyrolactone, ethylene carbonate, propylene carbonate, phenyl cellosolve acetate, etc., but are not limited thereto.;

[0281] For example, it is preferable to use a solvent such as a glycol ether such as ethylene glycol monoethyl ether or ethylene diglycol methyl ethyl ether; an ethylene glycol alkyl ether acetate such as ethyl cellosolve acetate; an ester such as 2-hydroxypropionate ethyl; a carbitol such as diethylene glycol monomethyl ether; a propylene glycol alkyl ether acetate such as propylene glycol monomethyl ether acetate or propylene glycol propyl ether acetate; an alcohol such as ethanol, or a combination thereof.

[0282] For example, the solvent may be a polar solvent including propylene glycol monomethyl ether acetate, dipropylene glycol methyl ether acetate, ethanol, ethylene glycol dimethyl ether, ethylene diglycol methyl ethyl ether, diethylene glycol dimethyl ether, 2-butoxyethanol, N-methylpyrrolidine, N-ethylpyrrolidine, propylene carbonate, γ-butyrolactone, or a combination thereof.

[0283] The solvent may be included in an amount of 40 wt% to 80 wt%, for example, 45 wt% to 80 wt%, based on the total amount of the curable composition. When the solvent is included within the above range, the solvent-type curable composition has an appropriate viscosity, thereby providing excellent coating properties during large-area coating using spin coating and slitting.

[0284]

[0285] Another embodiment provides a curable composition, such as a cured film manufactured using the curable composition, and a display device including the cured film. In this case, the cured film may have a reflectivity of 50% to 55% as described above.

[0286] One of the methods for manufacturing the above cured film includes a step (S1) of forming a pattern by applying the above curable composition onto a substrate using an inkjet spraying method; and a step (S2) of curing the pattern.

[0287] (S1) Pattern forming step

[0288] The above curable composition is preferably applied to a substrate with a thickness of 0.5 to 20 μm using an inkjet dispersion method. The inkjet spraying can form a pattern by spraying only a single color per nozzle and repeatedly spraying according to the required number of colors. To reduce the process, the pattern can also be formed by spraying the required number of colors simultaneously through each inkjet nozzle.

[0289] (S2) Hardening stage

[0290] The above-obtained pattern can be cured to obtain pixels. At this time, as a curing method, both a thermal curing process and a photocuring process can be applied. The thermal curing process is preferably cured by heating to a temperature of 100°C or higher, more preferably cured by heating to 100°C to 300°C, and even more preferably cured by heating to 160°C to 250°C. The photocuring process irradiates active rays such as UV rays of 190 nm to 450 nm, for example, 200 nm to 500 nm. As a light source used for irradiation, a low-pressure mercury lamp, a high-pressure mercury lamp, an ultra-high-pressure mercury lamp, a metal halide lamp, an argon gas laser, etc. can be used, and in some cases, X-rays, electron beams, etc. can also be used.

[0291] Another method of manufacturing the above-mentioned cured film is to manufacture the cured film using the above-mentioned curable composition using a lithography method, and the manufacturing method is as follows.

[0292] (1) Application and film formation stage

[0293] The above curable composition is applied to a substrate that has undergone a predetermined pretreatment using a spin or slit coating method, a roll coating method, a screen printing method, an applicator method, or the like to a desired thickness, for example, 2 μm to 10 μm, and then heated at a temperature of 70°C to 90°C for 1 to 10 minutes to remove the solvent, thereby forming a coating film.

[0294] (2) Exposure stage

[0295] In order to form a necessary pattern on the obtained film, a mask of a predetermined shape is interposed, and then an active ray such as UV light of 190 nm to 450 nm, for example, 200 nm to 500 nm, is irradiated. Light sources used for irradiation include low-pressure mercury lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, metal halide lamps, argon gas lasers, etc., and in some cases, X-rays, electron beams, etc. can also be used.

[0296] The exposure dose varies depending on the type, mixing amount, and dry film thickness of each component of the above-mentioned curable composition, but for example, when using a high-pressure mercury lamp, it is 500 mJ / cm 2 Below (based on 365 nm sensor).

[0297] (3) Phenomenon stage

[0298] Following the above exposure step, an alkaline aqueous solution is used as a developer to dissolve and remove unnecessary portions, thereby leaving only the exposed portions to form an image pattern. That is, when developing with an alkaline developer, the unexposed portions are dissolved, and an image color filter pattern is formed.

[0299] (4) Post-processing stage

[0300] The image pattern obtained by the above phenomenon can be cured by reheating or irradiating with active rays, etc., to obtain a pattern superior in terms of heat resistance, light resistance, adhesion, crack resistance, chemical resistance, high strength, storage stability, etc.

[0301]

[0302] Hereinafter, preferred embodiments of the present invention are described. However, the following examples are only preferred embodiments of the present invention, and the present invention is not limited to the following examples.

[0303]

[0304] Preparation of polymeric compounds

[0305] Manufacturing Example 1

[0306] 20 g of 4-(Methylthio)benzenethiol is thoroughly dissolved in 200 mL of dimethylformamide (DMF). 26.5 g of K2CO3 and 17.59 g of 2-bromoethanol are sequentially added, and the reaction is terminated after stirring at room temperature (23°C) for 12 hours. Dilute with 200 mL of ethyl acetate and extract three times with 1 N HCl aqueous solution. The separated organic layer is stirred with MgSO4 for 5 minutes, filtered, and concentrated. After column purification, concentration, and vacuum drying are performed.

[0307] The dried intermediate is sufficiently dissolved in 150 mL of dichloromethane and stirred at 0°C for 10 minutes. 8.87 g of triethylamine is added and stirred for an additional 10 minutes. 9.92 g of acryloyl chloride is slowly added dropwise at 0°C and the reaction is terminated after 30 minutes of stirring. The reaction solution is sequentially extracted using 150 mL of 1 N HCl aqueous solution and 150 mL of water. The separated organic layer is filtered after adding MgSO4 and stirring, and the filtrate is concentrated. After column purification, concentration, and vacuum drying, a compound represented by the following chemical formula 1-1-1 (refractive index: 1.5607, viscosity: 21 cps) is prepared.

[0308] [Chemical Formula 1-1-1]

[0309]

[0310]

[0311] Manufacturing Example 2

[0312] Dissolve 20 g of 4-(Methylthio)phenol in 200 mL of DMF. Add 29.57 g of K2CO3 and 19.61 g of 2-bromoethanol sequentially, stir at room temperature for 12 hours, and terminate the reaction. Dilute with 200 mL of ethyl acetate and extract three times with 1 N HCl aqueous solution. Add MgSO4 to the separated organic layer, stir for 5 minutes, filter, and concentrate the filtrate. After column purification, concentrate, and vacuum dry.

[0313] Dissolve 14.63 g of the dried intermediate in 150 mL of dichloromethane and stir at 0°C for 10 minutes. Add 9.64 g of triethylamine and stir for an additional 10 minutes. Slowly add 10.78 g of acryloyl chloride dropwise at 0°C, and then stir for 30 minutes to complete the reaction. The reaction solution is sequentially extracted using 150 mL of 1 N HCl aqueous solution and 150 mL of water. The separated organic layer is stirred with MgSO4, filtered, and concentrated. After column purification, concentration, and vacuum drying, a compound represented by the following chemical formula 1-1-2 (refractive index: 1.5995, viscosity: 17 cps) is prepared.

[0314] [Chemical Formula 1-1-2]

[0315]

[0316]

[0317] Manufacturing Example 3

[0318] Dissolve 18.2 g of 2-Thiophenethiol in 200 mL of DMF. Add 32.47 g of K2CO3 and 21.53 g of 2-bromoethanol sequentially, stir at room temperature for 12 hours, and terminate the reaction. Dilute with 200 mL of ethyl acetate and extract three times with 1 N HCl aqueous solution. Add MgSO4 to the separated organic layer, stir for 5 minutes, filter, and concentrate the filtrate. After column purification, concentrate, and dry in a vacuum.

[0319] Dissolve 15 g of the dried intermediate in 150 mL of dichloromethane and stir at 0°C for 10 minutes. Add 11.37 g of triethylamine and stir for an additional 10 minutes. Slowly add 12.71 g of acryloyl chloride dropwise at 0°C and stir for 30 minutes to complete the reaction. The reaction solution is sequentially extracted using 200 mL of 1 N HCl aqueous solution and 200 mL of water. The separated organic layer is filtered after adding MgSO4 and stirring, and the filtrate is concentrated. After column purification, concentration, and vacuum drying, a compound represented by the following chemical formula 2-1-1 (refractive index: 1.5619, viscosity: 7.2 cps) is prepared.

[0320] [Chemical Formula 2-1-1]

[0321]

[0322]

[0323] Manufacturing Example 4

[0324] Dissolve 20 g of 2-Thiophenemethanethiol in 200 mL of DMF. Add 31.84 g of K2CO3 and 21.11 g of 2-bromoethanol sequentially, stir at room temperature for 12 hours, and terminate the reaction. Dilute with 200 mL of ethyl acetate and extract three times with 1 N HCl aqueous solution. Add MgSO4 to the separated organic layer, stir for 5 minutes, filter, and concentrate the filtrate. After column purification, concentrate, and dry in a vacuum.

[0325] Dissolve 15 g of the dried intermediate in 150 mL of dichloromethane and stir at 0°C for 10 minutes. Add 10.45 g of triethylamine and stir for an additional 10 minutes. Slowly add 11.69 g of acryloyl chloride dropwise at 0°C and stir for 30 minutes to complete the reaction. The reaction solution is sequentially extracted using 200 mL of 1 N HCl aqueous solution and 200 mL of water. The separated organic layer is filtered after adding MgSO4 and stirring, and the filtrate is concentrated. After column purification, concentration, and vacuum drying, a compound represented by the following chemical formula 2-1-2 (refractive index: 1.5410, viscosity: 8.3 cps) is prepared.

[0326] [Chemical Formula 2-1-2]

[0327]

[0328]

[0329] Manufacturing Example 5

[0330] Dissolve 20 g of 2-thiophenemethanol in 200 mL of DMF. Add 36.32 g of K2CO3 and 24.08 g of 2-bromoethanol sequentially, stir at room temperature for 12 hours, and terminate the reaction. Dilute with 200 mL of ethyl acetate and extract three times with 1 N HCl aqueous solution. Add MgSO4 to the separated organic layer, stir for 5 minutes, filter, and concentrate the filtrate. After column purification, concentrate, and vacuum dry.

[0331] Dissolve 15 g of the dried intermediate in 150 mL of dichloromethane and stir at 0°C for 10 minutes. Add 11.51 g of triethylamine and stir for an additional 10 minutes. Slowly add 12.87 g of acryloyl chloride dropwise at 0°C and stir for 30 minutes to complete the reaction. The reaction solution is sequentially extracted using 200 mL of 1 N HCl aqueous solution and 200 mL of water. The separated organic layer is filtered after adding MgSO4 and stirring, and the filtrate is concentrated. After column purification, concentration, and vacuum drying, a compound represented by the following chemical formula 2-1-3 (refractive index: 1.5170, viscosity: 9.8 cps) is prepared.

[0332] [Chemical Formula 2-1-3]

[0333]

[0334]

[0335] Manufacturing Example 6

[0336] Dissolve 20 g of 1,3,4-Thiadiazole-2,5-dithiol in 200 mL of DMF. Add 55.20 g of K2CO3 and 36.6 g of 2-bromoethanol sequentially, stir at room temperature for 12 hours, and terminate the reaction. Dilute with 200 mL of ethyl acetate and extract three times with 1 N HCl aqueous solution. Add MgSO4 to the separated organic layer, stir for 5 minutes, filter, and concentrate the filtrate. After column purification, concentrate, and dry in a vacuum.

[0337] Dissolve 15 g of the dried intermediate in 150 mL of dichloromethane and stir at 0°C for 10 minutes. Add 15.41 g of triethylamine and stir for an additional 10 minutes. Slowly add 12.64 g of acryloyl chloride dropwise at 0°C and stir for 30 minutes to complete the reaction. The reaction solution is sequentially extracted using 200 mL of 1 N HCl aqueous solution and 200 mL of water. The separated organic layer is filtered after adding MgSO4 and stirring, and the filtrate is concentrated. After column purification, concentration, and vacuum drying, a compound represented by the following chemical formula X (refractive index: 1.5680, viscosity: 58.3 cps) is prepared.

[0338] [chemical formula X]

[0339]

[0340]

[0341] Preparation of surface-modified quantum dot dispersions

[0342] Manufacturing Example 7

[0343] A magnetic bar is placed in a three-necked round-bottomed flask, and a green quantum dot dispersion solution (InP / ZnSe / ZnS, Hansol Chemical; quantum dot solid content 23 wt%) is added to each. A compound (ligand) represented by the following chemical formula Q is added thereto, and the mixture is stirred at 80°C in a nitrogen atmosphere. After the reaction is complete, the mixture is cooled to room temperature (23°C), and the quantum dot reaction solution is added to cyclohexane to precipitate. The precipitate and cyclohexane are separated by centrifugation, and the precipitate is sufficiently dried in a vacuum oven for 24 hours to obtain surface-modified quantum dots.

[0344] The surface-modified green quantum dots were stirred in a polymerizable compound for 12 hours to obtain a surface-modified quantum dot dispersion (QD solid content: 23 wt%).

[0345] (*Synthesis of the compound represented by the chemical formula Q: Put 100 g of PH-4 (Hanong Chemical) in a two-necked round-bottomed flask and sufficiently dissolve in 300 mL of THF. Add 15.4 g of NaOH and 100 mL of water at 0 °C and sufficiently dissolve until a clear solution is obtained. Slowly inject a solution of 73 g of para-toluene sulfonic chloride in 100 mL of THF at 0 °C. The injection was carried out for 1 hour, and then stirred at room temperature for 12 hours. After the reaction was completed, add an excess of methylene chloride and stir, then add a saturated NaHCO3 solution and perform extraction, titration, and moisture removal. After removing the solvent, dry in a dry oven for 24 hours. Put 50 g of the obtained dried product in a two-necked round-bottomed flask and sufficiently stir in 300 mL of ethanol. After that, add 27 g of Thiourea, disperse, and reflux at 80 °C for 12 hours. After that Inject an aqueous solution of 4.4 g of NaOH dissolved in 20 mL of water, stir for 5 more hours, add an excess of methylene chloride, stir, then add an aqueous hydrochloric acid solution and sequentially perform extraction, titration, moisture removal, and solvent removal. Dry in a vacuum oven for 24 hours to obtain a compound represented by the following chemical formula Q.)

[0346] [Chemical formula Q]

[0347]

[0348]

[0349] (Manufacture of curable composition)

[0350] Examples 1 to 8, Comparative Examples 1 and 2

[0351] Using the components mentioned below, curable compositions according to Examples 1 to 8 and Comparative Examples 1 and 2 were prepared with the compositions shown in Table 1 below.

[0352] Specifically, the above quantum dot dispersion is weighed, diluted by mixing with a polymerizable compound, and a polymerization inhibitor is added, followed by stirring for 5 minutes. Next, a photoinitiator is added, followed by a light diffusing agent. The resulting solution is then stirred for 1 hour to produce a curable composition.

[0353]

[0354] (A) Quantum dots

[0355] Surface-modified green quantum dot dispersion prepared from Manufacturing Example 7

[0356] (B) polymeric compound

[0357] (B-1) Compound of Manufacturing Example 1

[0358] (B-2) Compound of Manufacturing Example 2

[0359] (B-3) Compound of manufacturing example 3

[0360] (B-4) Compound of Manufacturing Example 4

[0361] (B-5) Compound of Manufacturing Example 5

[0362] (B-6) Compound of Manufacturing Example 6

[0363] (B-7) Compound represented by the following chemical formula 4-2 (refractive index: 1.455, viscosity: 6.1 cps) (Hanong Chemical, HD002S)

[0364] [Chemical Formula 3-2]

[0365]

[0366] (C) Photopolymerization initiator

[0367] TPO-L (Polynetron)

[0368] (D) Light diffuser

[0369] Titanium dioxide dispersion (TiO2 solid content 20 wt%, average particle size: 200 nm, Dito Technology Co., Ltd.)

[0370] (E) Polymerization inhibitor

[0371] Methylhydroquinone (TOKYO CHEMICAL)

[0372]

[0373] (Unit: wt%) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 1 Comparative Example 2 (A) Quantum dot dispersion 38 38 38 38 38 38 38 38 41 38 (B) Polymerizable compound (B-1) 8.24 --------- (B-2) - 8.24 -------- (B-3) - 8.24 16.49 24.73 ----- (B-4) ---- 16.49 ---- (B-5) ----- 16.49 ---- (B-6) ----- 8.24 ---- (B-7) 46.7 146.7 146.7 138.46 30.22 38.46 38.46 46.7 15 1.95 54.95 (C) Photopolymerization Initiator 3333333333(D) Light diffusion agent 44444444444(E) Polymerization inhibitor 0.050.050.050.050.050.050.050.050.050.050.050.050.05 Total 100100100100100100100100100

[0374]

[0375] Evaluation: Evaluation of optical properties and diffuse reflectance of curable compositions

[0376] For each of the curable compositions according to Examples 1 to 8 and Comparative Examples 1 and 2, the post-exposure quantum efficiency (EQE) and post-curing diffuse reflectance (SCE) values ​​were measured using a spectrophotometer (Konica Minolta, CM-3600A), and the results are shown in Table 2 below.

[0377]

[0378] Quantum efficiency after exposure (%) Reflectance after curing (%) Example 1 30.5 5 3.6 Example 2 31.5 5 1.9 Example 3 30.7 5 3.5 Example 4 31.3 5 2.7 Example 5 32.0 5 1.2 Example 6 31.0 5 3.0 Example 7 30.7 5 3.4 Example 8 29.8 5 4.9 Comparative Example 129.7 5 7.8 Comparative Example 229.5 5 6.0

[0379]

[0380] From the above Table 3, it can be confirmed that the curable compositions according to Examples 1 to 8 have improved optical properties due to higher quantum efficiency after exposure compared to the curable compositions according to Comparative Examples 1 and 2, and at the same time, have a lower diffuse reflectance after curing, thereby also having a reflectance reduction effect.

[0381]

[0382] The present invention is not limited to the above-described embodiments, but can be manufactured in a variety of different forms. Those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive.

Claims

1. (A) Quantum dots; and (B) containing a polymeric compound, The above polymerizable compound is A first polymerizable compound having a refractive index of 1.5 or more and a viscosity of 10 cps or more, and containing a benzene ring; and A second polymerizable compound having a structure different from that of the first polymerizable compound and containing a thiophene ring or a furan ring A curable composition comprising:

2. In paragraph 1, The above first polymerizable compound is a curable composition having a refractive index of 1.56 or more.

3. In paragraph 1, The first polymerizable compound is a curable composition represented by the following chemical formula 1: [Chemical Formula 1] In the above chemical formula 1, X 1 and X 2 are each independently an oxygen atom or a sulfur atom, R 1 and R 2 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group, L 1 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, or a combination thereof.

4. In paragraph 3, The above chemical formula 1 is a curable composition represented by the following chemical formula 1-1: [Chemical Formula 1-1] In the above chemical formula 1-1, X 1 and X 2 are each independently an oxygen atom or a sulfur atom, R 1 and R 2 are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group, L 1 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, a substituted or unsubstituted C6 to C20 arylene group, or a combination thereof.

5. In paragraph 1, The above first polymerizable compound is a curable composition represented by the following chemical formula 1-1-1 or chemical formula 1-1-2. [Chemical Formula 1-1-1] [Chemical Formula 1-1-2] 6. In paragraph 1, The second polymerizable compound is a curable composition represented by the following chemical formula 2: [Chemical Formula 2] In the above chemical formula 2, X 3 and X 4 are each independently an oxygen atom or a sulfur atom, R 3 is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group, L 2 is a single bond or a substituted or unsubstituted C1 to C20 alkylene group, L 3 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, or a combination thereof, n is an integer from 1 to 4.

7. In paragraph 6, The above chemical formula 2 is a curable composition represented by the following chemical formula 2-1: [Chemical Formula 2-1] In the above chemical formula 2-1, X 3 and X 4 are each independently an oxygen atom or a sulfur atom, R 3 is a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group, L 2 is a single bond or a substituted or unsubstituted C1 to C20 alkylene group, L 3 is a substituted or unsubstituted C1 to C20 alkylene group, a substituted or unsubstituted C1 to C20 oxyalkylene group, a substituted or unsubstituted C3 to C20 cycloalkylene group, or a combination thereof.

8. In paragraph 1, A curable composition comprising at least one selected from the group consisting of the following chemical formulae 2-1-1 to 2-1-3, wherein the second polymerizable compound is: [Chemical Formula 2-1-1] [Chemical Formula 2-1-2] [Chemical Formula 2-1-3] 9. In paragraph 1, The second polymerizable compound is a curable composition having a refractive index of 1.5 or more and a viscosity of less than 10 cPs.

10. In paragraph 1, A curable composition comprising the first polymerizable compound and the second polymerizable compound in a weight ratio of 1:9 to 9:

1.

11. In paragraph 1, The above curable composition is a curable composition that is a solvent-free curable composition.

12. In paragraph 11, The above solvent-free curable composition, with respect to the total amount of the above solvent-free curable composition, 5 to 60 wt% of the above quantum dots; and 40 to 95 wt% of the polymerizable compound A solvent-free curable composition comprising:

13. In paragraph 1, The above curable composition further comprises a polymerization initiator, a light diffusing agent, a polymerization inhibitor or a combination thereof.

14. In paragraph 13, The above light diffusing agent is a curable composition comprising barium sulfate, calcium carbonate, titanium dioxide, zirconia or a combination thereof.

15. In paragraph 1, The above curable composition further comprises a solvent.

16. In paragraph 15, The curable composition comprises, based on the total weight of the curable composition, 1 wt% to 40 wt% of the quantum dot; 1 wt% to 20 wt% of the polymerizable compound; and 40 wt% to 80 wt% of the solvent.

17. In paragraph 1, The curable composition further comprises malonic acid; 3-amino-1,2-propanediol; a silane coupling agent; a leveling agent; a fluorinated surfactant; or a combination thereof.

18. A cured film manufactured using a curable composition according to any one of claims 1 to 17.

19. A display device including the cured film of Article 18.

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