KR20230169894A - Quantum dot, curable composition comprising the same, cured layer using the composition and color filter including the cured layer - Google Patents

Abstract

Quantum dots surface-modified with a compound represented by the following formula (1), a curable composition containing the quantum dots, a cured film, and a color filter are provided.
[Formula 1]

(In Formula 1 above, each substituent is as defined in the specification.)

Description

Quantum dots, a curable composition containing the same, a cured film manufactured using the composition, and a color filter containing the cured film {QUANTUM DOT, CURABLE COMPOSITION COMPRISING THE SAME, CURED LAYER USING THE COMPOSITION AND COLOR FILTER INCLUDING THE CURED LAYER}

This description relates to quantum dots, a curable composition containing the same, a cured film manufactured using the composition, and a color filter containing the cured film.

In the case of general quantum dots, the solvent in which they are dispersed is limited due to their hydrophobic surface characteristics, and as a result, it is true that they face many difficulties in introducing them into polar systems such as binders or curable monomers.

For example, even in the case of quantum dot ink compositions that are being actively studied, at the initial stage, they were dispersed in solvents used in curable compositions with relatively low polarity and high hydrophobicity. For this reason, it was difficult to include more than 20% by weight of quantum dots relative to the total amount of the composition, making it impossible to increase the luminous efficiency of the ink beyond a certain level, and even if additional quantum dots were added and dispersed to increase luminous efficiency, ink-jetting was not possible. This possible viscosity range (12 cPs) was exceeded, so fairness could not be satisfied.

In addition, in order to achieve a viscosity range in which jetting is possible, a method of lowering the ink solid content by including more than 50% by weight of solvent relative to the total amount of the composition has been used. Although this method also provides somewhat satisfactory results in terms of viscosity, In addition to problems such as nozzle drying due to solvent volatilization during jetting, nozzle clogging, and single film reduction over time after jetting, thickness deviation becomes severe after curing, making it difficult to apply in actual processes.

Therefore, the solvent-free type of quantum dot ink that does not contain a solvent is the most desirable form to apply in actual processes, and the current technology for applying quantum dots themselves to solvent-type compositions is evaluated to have reached a certain limit.

Reported to date, in the case of the solvent-type composition, which is most desirable for application to actual processes, quantum dots that have not undergone surface modification such as ligand substitution are contained in an amount of about 20% to 25% by weight relative to the total amount of the solvent-type composition. , Therefore, it is difficult to increase light efficiency and absorption rate due to limitations in viscosity. Meanwhile, attempts are being made to reduce the quantum dot content and increase the light diffuser (scattering agent) content as another improvement direction, but this also does not improve the sedimentation problem or low light efficiency problem.

One embodiment is to provide quantum dots with excellent light efficiency by surface modification with a compound with excellent passivation effect.

Another embodiment is to provide a curable composition containing quantum dots.

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

Another embodiment is to provide a color filter including the cured film.

One embodiment provides quantum dots surface-modified with a compound represented by Formula 1 below.

[Formula 1]

In Formula 1, n is an integer of 1, R ¹ is a carboxyl group,

R ² is represented by the following formula 1A,

[Formula 1A]

In Formula 1A,

R ³ is a substituted or unsubstituted vinyl group,

L ¹ is a C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, an allyl group, an epoxy group, or a (meth)acrylate group,

L ² is a single bond, *-C(=O)O-* or *-S-*,

L ³ is represented by the following formula 1C-1 or 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20,

In Formula 1, n is an integer of 2, and R ¹ is a carboxyl group, *-P(=O)(OH) ₂ or a thiol group,

R ² is 'a C1 to C20 alkyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', 'a vinyl group, an allyl group, an epoxy group, ( Meta) acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group substituted or unsubstituted C1 to C20 alkoxy group', 'vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 C6 to C20 aryl group substituted or unsubstituted with C12 aryl group', 'C6 to C20 substituted or unsubstituted by vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group. Aryloxy group' or 'represented by the following formula 1A',

[Formula 1A]

In Formula 1A,

R ³ is a 'substituted or unsubstituted vinyl group', 'a C1 to C20 alkyl group substituted or unsubstituted by a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', or 'A C2 to C20 alkenyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group',

L ¹ is a 'C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' C3 to C20 cycloalkylene group' or 'represented by any of the following formulas 1B-1-1 to 1B-7-2',

[Formula 1B-1-1]

[Formula 1B-1-2]

[Formula 1B-2-1]

[Formula 1B-2-2]

[Formula 1B-3-1]

[Formula 1B-3-2]

[Formula 1B-4-1]

[Formula 1B-4-2]

[Formula 1B-5-1]

[Formula 1B-5-2]

[Formula 1B-6-1]

[Formula 1B-6-2]

[Formula 1B-7-1]

[Formula 1B-7-2]

In Formula 1B-1-1 to Formula 1B-7-2,

R ^a and R ^b are each independently a hydrogen atom or a carboxyl group,

R ^c is O, S, NH, C1 to C20 alkylene group, C1 to C20 alkylamine group, or C2 to C20 allylamine group,

L ² is a single bond, *-C(=O)O-* or *-S-*,

L ³ is represented by the following formula 1C-1 or 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20,

n is an integer of 2.

The compound represented by Formula 1 may be represented by Formula 2 below.

[Formula 2]

In Formula 2,

R ² is represented by the following formula 1A,

[Formula 1A]

In Formula 1A,

R ³ is a substituted or unsubstituted vinyl group,

L ¹ is an unsubstituted C1 to C20 alkylene group,

L ² is a single bond or *-C(=O)O-*,

L ³ is represented by the following formula 1C-1,

[Formula 1C-1]

In Formula 1C-1,

L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20.

In Formula 2, L ¹ is an unsubstituted C1 to C20 alkylene group, L ² is *-C(=O)O-*, and L ³ may be represented by the following Chemical Formula 1C-1.

[Formula 1C-1]

In Formula 1C-1,

L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20.

The quantum dots may have a maximum fluorescence emission wavelength of 500 nm to 680 nm.

Another embodiment includes the quantum dots; and a polymerizable monomer having a carbon-carbon double bond at the terminal.

The polymerizable monomer may have a molecular weight of 220 to 1,000 g/mol.

The polymerizable monomer may be represented by the following formula (5).

[Formula 5]

In Formula 5 above,

R ¹⁰¹ and R ¹⁰² are each independently a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group,

L ¹⁰¹ and L ¹⁰³ are each independently a substituted or unsubstituted C1 to C10 alkylene group,

L ¹⁰² is a substituted or unsubstituted C1 to C10 alkylene group or ether group (*-O-*).

The solvent-free curable composition may include 1% to 60% by weight of the quantum dots and 40% to 99% by weight of the polymerizable monomer.

The solvent-free curable composition may further include a polymerization initiator, a light diffuser, or a combination thereof.

Another embodiment includes the quantum dots; binder resin; and a solvent.

The solvent-type curable composition contains 1% to 40% by weight of the quantum dots; 1% to 30% by weight of the binder resin; And it may include the remaining amount of the solvent.

The solvent-type curable composition may further include a polymerizable monomer, a polymerization initiator, a light diffuser, or a combination thereof.

Another embodiment provides a cured film manufactured using the composition.

Another embodiment provides a color filter including the cured film.

One embodiment provides quantum dots surface-modified with a specific compound, and the specific ligand has a very excellent passivation effect on the quantum dots, so that the quantum dots surface-modified with the compound have solvent-type curable compositions and solvent-free curable compositions compared to existing quantum dots. It can be easily applied to all compositions, so not only is it excellent in processability, but the luminous efficiency of the cured film manufactured using the composition can also be greatly improved. Furthermore, the curable composition containing quantum dots according to one embodiment has excellent storage stability and heat resistance.

Hereinafter, embodiments of the present invention will be described in detail. However, this is presented as an example, and the present invention is not limited thereby, and the present invention is only defined by the scope of the claims to be described later.

Unless otherwise specified herein, “alkyl group” refers to a C1 to C20 alkyl group, “alkenyl group” refers to a C2 to C20 alkenyl group, and “cycloalkenyl group” refers to a C3 to C20 cycloalkenyl group. , “Heterocycloalkenyl group” refers to a C3 to C20 heterocycloalkenyl group, “aryl group” refers to a C6 to C20 aryl group, “arylalkyl group” refers to a C6 to C20 arylalkyl group, and “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, and “heteroarylene group” means a C3 to C20 heteroarylene group. It means an arylene group, and “alkoxylene group” means a C1 to C20 alkoxylene group.

Unless otherwise specified herein, “substitution” means that at least one hydrogen atom is replaced by 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, Azido group, amidino group, hydrazino group, hydrazono group, carbonyl group, carbamyl group, thiol group, ester group, ether group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid or its salt, C1 to C20 alkyl group, C2 to C20 alkenyl group, C2 to C20 alkynyl group, C6 to C20 aryl group, C3 to C20 cycloalkyl group, C3 to C20 cycloalkenyl group, C3 to C20 cycloalkynyl group, C2 to C20 heterocycloalkyl group, C2 to C20 heterocycloalkenyl group, C2 to C20 heterocycloalkynyl group, C3 to C20 heteroaryl group, or a combination thereof.

Also, unless otherwise specified herein, “hetero” means that at least one hetero atom of N, O, S, and P is included in the chemical formula.

Additionally, unless otherwise specified in the specification, “(meth)acrylate” means that both “acrylate” and “methacrylate” are possible, and “(meth)acrylic acid” means “acrylic acid” and “methacrylic acid.” "It means that both are possible.

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

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.

As used herein, cardo-based resin refers to a resin in which at least one functional group selected from the group consisting of the following formulas 6-1 to 6-11 is included in the backbone of the resin.

Additionally, unless otherwise specified in the specification, “*” refers to a portion connected to the same or different atom or chemical formula.

In the case of general quantum dots, the solvent in which they are dispersed is limited due to their hydrophobic surface characteristics, so it is true that many difficulties are encountered in introducing quantum dots into polar systems such as binder resins or curable monomers.

For example, even in the case of curable compositions containing quantum dots that are being actively studied, in the early stages, quantum dots were barely dispersed in curable compositions with relatively low polarity and high hydrophobicity. For this reason, it was difficult to include quantum dots in a high content of 20% by weight or more based on the total composition, so it was not possible to increase the light efficiency of the curable composition beyond a certain level, and even if quantum dots were added and dispersed unreasonably to increase light efficiency, ink-jetting (Ink) -jetting) was beyond the possible viscosity range (12 cPs), so fairness could not be satisfied.

In addition, in order to realize a viscosity range that is possible for ink-jetting, a method of lowering the solid content of the curable composition by including 50% by weight or more of solvent relative to the total amount of the entire curable composition has been used. This method can also be excellent in terms of viscosity. However, there were disadvantages such as nozzle drying due to solvent volatilization during ink-jetting, nozzle clogging, single film reduction over time after ink-jetting, and severe thickness variation after curing, making it difficult to apply in actual processes.

Therefore, considering that the development direction of the curable composition containing quantum dots is a solvent-free type that does not contain a solvent and can be applied to actual processes, it is true that there are limitations in applying the current quantum dots themselves as is.

Reported to date, quantum dots that have not undergone surface modification such as ligand substitution contain only a small amount of about 20 to 25% by weight in the total curable composition, and therefore it is difficult to increase light efficiency and absorption rate due to limitations in viscosity. am. Another direction for improvement is to lower the quantum dot content and increase the content of light diffusers such as TiO ₂ , but this also does not improve the sedimentation problem or low light efficiency.

As mentioned above, the problem with existing solvent-type curable compositions containing quantum dots is that nozzle clogging occurs due to solvent drying at the nozzle portion during the ink-jetting process, and ink in the ink-jetted pixel evaporates due to the low vapor pressure of the solvent. The thickness of the target pixel cannot be maintained, It is difficult to secure ink-jetting fairness.

In addition, after forming a film within a pixel and going through a post baking (or additional heat curing) process, an amount of ink far exceeding the pixel height is ink-jetted to form a layer of a certain thickness to reach the pinning point (maximum height at which the drop does not collapse). must be formed, but this is not only realistically impossible, but also the possibility of development is very low because the processable solvent must have a surface tension close to 40 dyne/cm.

Most ligands for surface modification of quantum dots generally have thiol groups. As mentioned above, quantum dots surface-modified with thiol group-containing ligands have low dispersibility, poor inkjetting processability, and above all, do not meet the increasing demands for optical properties in the market. In light of this, the prevailing assessment is that it has almost reached its limit.

Accordingly, after long research, the present inventors surface-modified quantum dots using functional groups containing carbon-carbon double bonds or epoxy groups, even if they do not have a thiol group or even if they do have a thiol group, thereby preventing deterioration of the optical properties of the quantum dots and improving the curability of the quantum dots. The storage stability and heat resistance of the composition were greatly improved.

For example, the ligand may be represented by Formula 1 below.

[Formula 1]

In Formula 1,

R ¹ is a carboxyl group, *-P(=O)(OH) ₂ or a thiol group,

R ² is 'a C1 to C20 alkyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', 'a vinyl group, an allyl group, an epoxy group, ( Meta) acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group substituted or unsubstituted C1 to C20 alkoxy group', 'vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 C6 to C20 aryl group substituted or unsubstituted with C12 aryl group', 'C6 to C20 substituted or unsubstituted by vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group. Aryloxy group' or 'represented by the following formula 1A',

[Formula 1A]

In Formula 1A,

R ³ is a 'substituted or unsubstituted vinyl group', 'a C1 to C20 alkyl group substituted or unsubstituted by a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', or 'A C2 to C20 alkenyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group',

L ¹ is a 'C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' C3 to C20 cycloalkylene group' or 'represented by any of the following formulas 1B-1-1 to 1B-7-2',

[Formula 1B-1-1]

[Formula 1B-1-2]

[Formula 1B-2-1]

[Formula 1B-2-2]

[Formula 1B-3-1]

[Formula 1B-3-2]

[Formula 1B-4-1]

[Formula 1B-4-2]

[Formula 1B-5-1]

[Formula 1B-5-2]

[Formula 1B-6-1]

[Formula 1B-6-2]

[Formula 1B-7-1]

[Formula 1B-7-2]

In Formula 1B-1-1 to Formula 1B-7-2,

R ^a and R ^b are each independently a hydrogen atom or a carboxyl group,

R ^c is O, S, NH, C1 to C20 alkylene group, C1 to C20 alkylamine group, or C2 to C20 allylamine group,

L ² is a single bond, *-C(=O)O-* or *-S-*,

L ³ is represented by the following formula 1C-1 or 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20,

n is an integer of 1 or 2.

For example, in Formula 1, n is an integer of 2, and R ¹ is a carboxyl group, *-P(=O)(OH) ₂ or a thiol group. In this case, the definitions of the remaining substituents in Formula 1 may be as above. .

For example, in Formula 1, n is an integer of 1 and R ¹ is a carboxyl group. In this case, the definitions of the remaining substituents in Formula 1 may be as follows.

R ² is represented by the following formula 1A,

[Formula 1A]

In Formula 1A,

R ³ is a substituted or unsubstituted vinyl group,

L ¹ is a C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, an allyl group, an epoxy group, or a (meth)acrylate group,

L ² is a single bond, *-C(=O)O-* or *-S-*,

L ³ is represented by the following formula 1C-1 or 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m may be an integer from 1 to 20.

In L ² , *-C(=O)O-* has a different connection order from *-O(C=O)-*, and the carbonyl group of *-C(=O)O-* is L ¹ Connected to a linking group, the ether group may be linked to an L ³ linking group.

For example, the compound represented by Formula 1 may be represented by Formula 2 below.

[Formula 2]

In Formula 2,

R ² is 'a C1 to C20 alkyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', 'a vinyl group, an allyl group, an epoxy group, ( Meta) acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group substituted or unsubstituted C1 to C20 alkoxy group', 'vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 C6 to C20 aryl group substituted or unsubstituted with C12 aryl group', 'C6 to C20 substituted or unsubstituted by vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group. Aryloxy group' or 'represented by the following formula 1A',

[Formula 1A]

In Formula 1A,

R ³ is a 'substituted or unsubstituted vinyl group', 'a C1 to C20 alkyl group substituted or unsubstituted by a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', or 'A C2 to C20 alkenyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group',

L ¹ is a 'C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' C3 to C20 cycloalkylene group' or 'Formula 1B-1-1, Formula 1B-2-1, Formula 1B-3-1, Formula 1B-4-1, Formula 1B-5-1, Formula 1B-6- 1 and the formula 1B-7-1,

[Formula 1B-1-1]

[Formula 1B-2-1]

[Formula 1B-3-1]

[Formula 1B-4-1]

[Formula 1B-5-1]

[Formula 1B-6-1]

[Formula 1B-7-1]

In Formula 1B-1-1 to Formula 1B-7-1,

R ^a and R ^b are each independently a hydrogen atom or a carboxyl group,

R ^c is O, S, NH, C1 to C20 alkylene group, C1 to C20 alkylamine group, or C2 to C20 allylamine group,

L ² is a single bond, *-C(=O)O-* or *-S-*,

L ³ is represented by the following formula 1C-1 or 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20.

The compound represented by Formula 1, and specifically the compound represented by Formula 2, is a ligand whose structure is completely different from the thiol-based compound often used as a conventional quantum dot surface modification material. When surface modifying quantum dots with this ligand, the Surface-modified quantum dots can greatly improve the luminous efficiency of a cured film made from the quantum dot-containing composition, and can further improve the storage stability and heat resistance of the composition.

In Formula 2, R ² is 'C1 to C20 alkyl group substituted or unsubstituted by C1 to C10 alkyl group or C6 to C12 aryl group', 'C1 to C20 alkoxy substituted or unsubstituted by C1 to C10 alkyl group or C6 to C12 aryl group. group', 'C6 to C20 aryl group substituted or unsubstituted by C1 to C10 alkyl group or C6 to C12 aryl group', 'C6 to C20 aryloxy group substituted or unsubstituted by C1 to C10 alkyl group or C6 to C12 aryl group'. , L ¹ is an ‘unsubstituted C1 to C20 alkylene group’ or an ‘unsubstituted C3 to C20 cycloalkylene group’, and L ² is a single bond, *-C(=O)O-* or *-S-* and L ³ is represented by the following formula 1C-1 or formula 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group, L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group, and m may be an integer of 1 to 20.

Meanwhile, the compound represented by Formula 1 is not represented by Formula 2, and (in Formula 1) R ¹ is a carboxyl group or a thiol group, and R ² is a vinyl group, an allyl group, an epoxy group, or a (meth)acrylic group. C1 to C20 alkyl group substituted or unsubstituted with a latex group', 'C1 to C20 alkoxy group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'vinyl group, allyl group, epoxy group or ( C6 to C20 aryl group substituted or unsubstituted with a meta) acrylate group', 'C6 to C20 aryloxy group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth) acrylate group' or 'Chemical formula 1A below 'marked',

[Formula 1A]

In Formula 1A,

R ³ is a 'substituted or unsubstituted vinyl group', 'C1 to C20 alkyl group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', or 'vinyl group, allyl group, epoxy group or (meth) ) C2 to C20 alkenyl group substituted or unsubstituted with an acrylate group,

L ¹ is a 'C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' C3 to C20 cycloalkylene group' or 'represented by any of the following formulas 1B-1-1 to 1B-7-2',

[Formula 1B-1-1]

[Formula 1B-1-2]

[Formula 1B-2-1]

[Formula 1B-2-2]

[Formula 1B-3-1]

[Formula 1B-3-2]

[Formula 1B-4-1]

[Formula 1B-4-2]

[Formula 1B-5-1]

[Formula 1B-5-2]

[Formula 1B-6-1]

[Formula 1B-6-2]

[Formula 1B-7-1]

[Formula 1B-7-2]

In Formula 1B-1-1 to Formula 1B-7-2,

R ^a and R ^b are each independently a hydrogen atom or a carboxyl group,

R ^c is O, S, NH, C1 to C20 alkylene group, C1 to C20 alkylamine group, or C2 to C20 allylamine group,

L ² is a single bond, *-C(=O)O-* or *-S-*,

L ³ is represented by the following formula 1C-1 or 1C-2,

[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,

L ⁴ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20,

n may be a compound that is an integer of 1 or 2.

For example, the compound represented by Formula 1 may be represented by Formula 3 or Formula 4 below.

[Formula 3]

[Formula 4]

In Formula 3 above,

R ⁴ is 'C1 to C20 alkyl group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'C1 substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' to C20 alkoxy group', 'C6 to C20 aryl group substituted or unsubstituted with vinyl group, allyl group, epoxy group or (meth)acrylate group', 'Substituted or Unsubstituted C6 to C20 aryloxy group' or 'represented by the following formula 1A',

[Formula 1A]

In Formula 1A,

R ³ is a 'substituted or unsubstituted vinyl group', 'C1 to C20 alkyl group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', or 'vinyl group, allyl group, epoxy group or (meth) ) C2 to C20 alkenyl group substituted or unsubstituted with an acrylate group,

R ⁵ is a carboxyl group or a thiol group,

L ⁶ and L ⁷ are each independently a substituted or unsubstituted C1 to C20 alkylene group,

L ⁸ is a single bond, *-S-*, *-C(=O)-* or *-OC(=O)-*,

L ⁹ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

m is an integer from 1 to 20,

[Formula 4]

In Formula 4 above,

R ⁴ is 'C1 to C20 alkyl group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'C1 substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' to C20 alkoxy group', 'C6 to C20 aryl group substituted or unsubstituted with vinyl group, allyl group, epoxy group or (meth)acrylate group', 'Substituted or Unsubstituted C6 to C20 aryloxy group' or 'represented by the following formula 1A',

[Formula 1A]

In Formula 1A,

R ³ is a 'substituted or unsubstituted vinyl group', 'C1 to C20 alkyl group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', or 'vinyl group, allyl group, epoxy group or (meth) ) C2 to C20 alkenyl group substituted or unsubstituted with an acrylate group,

L ⁶ and L ⁷ are each independently a substituted or unsubstituted C1 to C20 alkylene group,

L ⁸ is a single bond, *-S-*, *-C(=O)-* or *-OC(=O)-*,

L ⁹ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,

L ¹⁰ is represented by Formula 1B-1-1, Formula 1B-2-1, Formula 1B-3-1, Formula 1B-4-1, Formula 1B-5-1, Formula 1B-6-1, and Formula 1B-7. It is displayed as one selected from the group consisting of -1,

[Formula 1B-1-1]

[Formula 1B-2-1]

[Formula 1B-3-1]

[Formula 1B-4-1]

[Formula 1B-5-1]

[Formula 1B-6-1]

[Formula 1B-7-1]

In Formula 1B-1-1 to Formula 1B-7-1,

R ^a and R ^b are each independently a hydrogen atom or a carboxyl group,

R ^c is O, S, NH, C1 to C20 alkylene group, C1 to C20 alkylamine group, or C2 to C20 allylamine group,

m is an integer from 1 to 20.

The compound represented by Formula 1 may have a weight average molecular weight of 1000 g/mol or less, for example, 200 to 1000 g/mol. When the compound represented by Formula 1 has a weight average molecular weight in the above range, the viscosity of the curable composition containing quantum dots surface-modified with the compound can be maintained low, which can be advantageous for ink-jetting.

For example, the quantum dots may have a maximum fluorescence emission wavelength of 500 nm to 680 nm.

A curable composition according to another embodiment includes quantum dots surface-modified with the compound represented by Formula 1 above.

To date, curable compositions (inks) containing quantum dots have been developed to specialize monomers with good compatibility with quantum dots, and are even being commercialized.

Meanwhile, -ene monomers (including vinyl monomers, acrylate monomers, methacrylate monomers, etc., ranging from monofunctional to multifunctional), which are common and universally used polymerizable monomers, are used in conjunction with quantum dots and Due to the low compatibility and limitations in the dispersibility of quantum dots, it is true that it is difficult to develop various methods for useful application in curable compositions containing quantum dots. Above all, the -ene-based monomer did not show high concentration quantum dot dispersibility, making it difficult to apply it to a curable composition containing quantum dots.

Due to these disadvantages, curable compositions containing quantum dots have been developed as compositions containing a significant amount (50% by weight or more) of solvent, but there is a problem in that ink jetting processability deteriorates when the solvent content increases. Therefore, the demand for solvent-free curable compositions is increasing to satisfy ink jetting process.

The present application provides a solvent-free curable composition for which demand is increasing, and a polymerizable monomer containing a compound having a carbon-carbon double bond at the terminal is used together with quantum dots surface-modified with the compound represented by Formula 1, By improving the affinity of quantum dots for curable compositions, it is possible to provide high concentration dispersion of quantum dots even in a solvent-free system, while also achieving a passivation effect that does not impair the original optical properties of quantum dots. .

Below, each component constituting the solvent-free curable composition will be described in detail.

quantum dot

Quantum dots included in the solvent-free curable composition include quantum dots surface-modified with the compound represented by Formula 1 above.

For example, the quantum dots absorb light in a wavelength range of 360 nm to 780 nm, for example, 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. You can. That is, the quantum dot may have a maximum fluorescence emission wavelength (fluorescence λ _em ) of 500 nm to 680 nm.

The 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 dot has a half width in the above range, color purity is high, which has the effect of increasing color reproduction rate when used as a color material in a color filter.

The quantum dots may each independently be an organic material, an inorganic material, or a hybrid of an organic material and an inorganic material.

The quantum dots may each independently consist of a core and a shell surrounding the core, and the core and shell each independently consist of a core made of group II-IV, group III-V, etc., core/shell, core/first shell/ It may have a structure such as a second shell, an alloy, or an alloy/shell, but is not limited thereto.

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 to this. 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.

In one embodiment, as interest in the environment has recently greatly increased worldwide and regulations on toxic substances have been strengthened, a light-emitting material with a cadmium-based core may be used instead of a light-emitting material, which has a somewhat low quantum yield but is environmentally friendly. Non-cadmium-based light emitting materials (InP/ZnS, InP/ZnSe/ZnS, etc.) were used, but are not necessarily limited thereto.

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

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.

Meanwhile, for the dispersion stability of the quantum dots, the solvent-free curable composition according to one embodiment may further include a dispersant. The dispersant helps the light conversion material such as quantum dots to be uniformly dispersed within the solvent-free curable composition, and nonionic, anionic, or cationic dispersants can all be used. Specifically, polyalkylene glycol or its esters, polyoxy alkylene, polyhydric alcohol ester alkylene oxide adduct, alcohol alkylene oxide adduct, sulfonic acid ester, sulfonic acid salt, carboxylic acid ester, carboxylic acid salt, alkyl amide alkylene oxide. Adducts, alkyl amines, etc. can be used, and these can be used alone or in a mixture of two or more types. The dispersant may be used in an amount of 0.1% to 100% by weight, for example, 10% to 20% by weight, based on the solid content of the light conversion material such as quantum dots.

Quantum dots surface-modified with Formula 1 or Formula 2 may be included in an amount of 1% to 60% by weight, for example, 3% to 50% by weight, based on the total amount of the solvent-free curable composition. When the surface-modified quantum dots are included within the above range, the light conversion rate is excellent and pattern characteristics and development characteristics are not impaired, so excellent processability can be achieved.

Polymerizable monomer with a carbon-carbon double bond at the terminal

The monomer having a carbon-carbon double bond at the terminal may be included in an amount of 40% to 99% by weight, for example, 50% to 97% by weight, based on the total amount of the solvent-free curable composition. The content of the monomer having a carbon-carbon double bond at the terminal must be within the above range to enable the production of a solvent-free curable composition having a viscosity capable of ink jetting. Additionally, the quantum dots in the prepared solvent-free curable composition must have excellent dispersibility. Therefore, optical properties can also be improved.

For example, the monomer having a carbon-carbon double bond at the terminal may have a molecular weight of 220 g/mol to 1,000 g/mol. When the molecular weight of the monomer having a carbon-carbon double bond at the terminal is within the above range, it can be advantageous for ink-jetting because it does not impair the optical properties of the quantum dots and does not increase the viscosity of the composition.

For example, the monomer having a carbon-carbon double bond at the terminal may be represented by the following formula (5), but is not necessarily limited thereto.

[Formula 5]

In Formula 5 above,

R ¹⁰¹ and R ¹⁰² are each independently a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group,

L ¹⁰¹ and L ¹⁰³ are each independently a substituted or unsubstituted C1 to C10 alkylene group,

L ¹⁰² is a substituted or unsubstituted C1 to C10 alkylene group or ether group (*-O-*).

For example, the monomer having a carbon-carbon double bond at the terminal may be represented by the following formula 5-1 or 5-2, but is not necessarily limited thereto.

[Formula 5-1]

[Formula 5-2]

For example, monomers having a carbon-carbon double bond at the terminal include, in addition to the compounds represented by Formula 5-1 or Formula 5-2, ethylene glycol diacrylate, triethylene glycol diacrylate, and 1,4-butanediol diacryl. Late, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, di Pentaerythritol pentaacrylate, pentaerythritol hexaacrylate, bisphenol A diacrylate, trimethylolpropane triacrylate, novolac epoxy acrylate, ethylene glycol dimethacrylate, triethylene glycol dimethacrylate, propylene glycol It may further include dimethacrylate, 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate, or a combination thereof.

In addition, in addition to the monomer having a carbon-carbon double bond at the terminal, it may further include a monomer commonly used in conventional thermosetting or photocuring compositions, for example, the monomer may be bis[1-ethyl(3-oxetanyl) )] It may further include oxetane-based compounds such as methyl ether.

polymerization initiator

The solvent-free curable composition according to one embodiment may further include a polymerization initiator, for example, a photopolymerization initiator, a thermal polymerization initiator, or a combination thereof.

The photopolymerization initiator is an initiator commonly used in photosensitive resin compositions, for example, acetophenone-based compounds, benzophenone-based compounds, thioxanthone-based compounds, benzoin-based compounds, triazine-based compounds, oxime-based compounds, and aminoketone-based compounds. etc. may be used, but are not necessarily limited thereto.

Examples of the acetophenone-based compounds include 2,2'-diethoxy acetophenone, 2,2'-dibutoxy acetophenone, 2-hydroxy-2-methylpropiophenone, p-t-butyltrichloro acetophenone, p-t-butyldichloro acetophenone, 4-chloro acetophenone, 2,2'-dichloro-4-phenoxy acetophenone, 2-methyl-1-(4-(methylthio)phenyl)-2-morpholinopropane- 1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butan-1-one, etc.

Examples of the benzophenone-based compounds include benzophenone, benzoyl benzoic acid, methyl benzoyl benzoate, 4-phenyl benzophenone, hydroxybenzophenone, acrylated benzophenone, 4,4'-bis(dimethylamino)benzophenone, 4,4 Examples include '-bis(diethylamino)benzophenone, 4,4'-dimethylaminobenzophenone, 4,4'-dichlorobenzophenone, and 3,3'-dimethyl-2-methoxybenzophenone.

Examples of the thioxanthone-based compounds include thioxanthone, 2-methylthioxanthone, isopropyl thioxanthone, 2,4-diethyl thioxanthone, 2,4-diisopropyl thioxanthone, 2- Chlorothioxanthone, etc. can be mentioned.

Examples of the benzoin-based compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, and benzyldimethyl ketal.

Examples of the triazine-based 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, 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, 2-4-bis(trichloromethyl)-6-(4-methoxystyryl)-s-triazine, etc. .

Examples of the oxime-based compounds include O-acyloxime-based 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. can be used. Specific examples of the O-acyloxime compounds include 1,2-octanedione, 2-dimethylamino-2-(4-methylbenzyl)-1-(4-morpholin-4-yl-phenyl)-butane- 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)-butane-1-oneoxime- O-acetate, etc. can be mentioned.

Examples of the aminoketone-based compound include 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butanone -1), etc.

In addition to the above compounds, the photopolymerization initiator may include carbazole-based compounds, diketone-based compounds, sulfonium borate-based compounds, diazo-based compounds, imidazole-based compounds, and biimidazole-based compounds.

The photopolymerization initiator may be used together with a photosensitizer that absorbs light, becomes excited, and then transmits the energy to cause a chemical reaction.

Examples of the photosensitizer include tetraethylene glycol bis-3-mercapto propionate, pentaerythritol tetrakis-3-mercapto propionate, dipentaerythritol tetrakis-3-mercapto propionate, etc. can be mentioned.

Examples of the thermal polymerization initiator include peroxides, specifically benzoyl peroxide, dibenzoyl peroxide, lauryl peroxide, dilauryl peroxide, di-tert-butyl peroxide, cyclohexane peroxide, and methyl ethyl ketone peroxide. Oxides, hydroperoxides (e.g., tert-butyl hydroperoxide, cumene hydroperoxide), dicyclohexyl peroxydicarbonate, 2,2-azo-bis(isobutyronitrile), t-butyl perbenzo ate, 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.

The polymerization initiator may be included in an amount of 0.1% to 5% by weight, for example, 1% to 4% by weight, based on the total amount of the solvent-free curable composition. When the polymerization initiator is included within the above range, curing occurs sufficiently during exposure or heat curing to obtain 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 dots.

Light diffuser (or light diffuser dispersion)

The solvent-free curable composition according to one embodiment may further include a light diffuser.

For example, the light diffuser may include barium sulfate (BaSO ₄ ), calcium carbonate (CaCO ₃ ), titanium dioxide (TiO ₂ ), zirconia (ZrO ₂ ), or a combination thereof.

The light diffuser reflects light that is not absorbed by the quantum dots and allows the quantum dots to reabsorb the reflected light. That is, the light diffuser can increase the amount of light absorbed by the quantum dots, thereby increasing the light conversion efficiency of the curable composition.

The light diffuser may have an average particle diameter (D ₅₀ ) of 150 nm to 250 nm, specifically 180 nm to 230 nm. When the average particle diameter of the light diffuser is within the above range, a better light diffusion effect can be achieved and light conversion efficiency can be increased.

The light diffuser may be included in an amount of 1% to 20% by weight, for example, 5% to 10% by weight, based on the total amount of the solvent-free curable composition. If the light diffuser is included in less than 1% by weight relative to the total amount of the solvent-free curable composition, it is difficult to expect an effect of improving light conversion efficiency due to the use of the light diffuser, and if it is included in more than 20% by weight, quantum dot precipitation may occur. There is a risk that a problem may arise.

Other additives

To improve the stability and dispersibility of the quantum dots, the solvent-free curable composition according to one embodiment may further include a polymerization inhibitor.

The polymerization inhibitor may include a hydroquinone-based compound, a catechol-based compound, or a combination thereof, but is not necessarily limited thereto. As the solvent-free curable composition according to one embodiment further includes the hydroquinone-based compound, the catechol-based compound, or a combination thereof, room temperature crosslinking can be prevented during exposure to light after printing (coating) the solvent-free curable composition. .

For example, the hydroquinone-based compound, catechol-based compound, or combinations thereof include 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, pyroga Roll, 2,6-di- t -butyl-4-methylphenol, 2-naphthol, tris(N-hydroxy-N-nitrosophenylaminato-O,O') aluminum (Tris(N-hydroxy-N -nitrosophenylamineto-O,O')aluminium) or a combination thereof, but is not necessarily limited thereto.

The 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 is 0.001% by weight to 3% by weight, for example, 0.1% by weight to 0.1% by weight, based on the total amount of the solvent-free curable composition. It may be included at 2% by weight. When the polymerization inhibitor is included within the above range, it is possible to solve the problem of aging at room temperature and prevent deterioration of sensitivity and surface peeling.

In addition, the solvent-free curable composition according to one embodiment includes malonic acid to improve heat resistance and reliability; 3-amino-1,2-propanediol; Silane-based coupling agent; leveling agent; Fluorine-based surfactant; Or it may further include a combination thereof.

For example, the solvent-free curable composition according to one embodiment may further include a silane-based coupling agent having a reactive substituent such as a vinyl group, carboxyl group, methacryloxy group, isocyanate group, or epoxy group to improve adhesion to the substrate. there is.

Examples of the silane-based coupling agent include trimethoxysilyl benzoic acid, γ methacryl oxypropyl trimethoxysilane, vinyl triacetoxysilane, vinyl trimethoxysilane, γ isocyanate propyl triethoxysilane, and γ glycidoxy propyl. Trimethoxysilane, β-epoxycyclohexyl)ethyltrimethoxysilane, etc. can be used, and these can be used alone or in combination of two or more.

The silane-based coupling agent may be included in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of the solvent-free curable composition. When the silane-based coupling agent is included within the above range, adhesion and storage properties are excellent.

In addition, the solvent-free curable composition may further include a surfactant, such as a fluorine-based surfactant, if necessary, to improve coating properties and prevent defects, that is, to improve leveling performance.

The fluorine-based surfactant may have a low weight average molecular weight of 4,000 g/mol to 10,000 g/mol, and specifically, may have a weight average molecular weight of 6,000 g/mol to 10,000 g/mol. Additionally, the fluorine-based surfactant may have a surface tension of 18 mN/m to 23 mN/m (measured in 0.1% propylene glycol monomethyl ether acetate (PGMEA) solution). If the weight average molecular weight and surface tension of the fluorine-based surfactant are within the above range, leveling performance can be further improved, stains can be prevented during high speed coating, and there are fewer film defects due to less bubble generation. , gives excellent properties to slit coating, a high-speed coating method.

Examples of the fluorine-based surfactants include BM-1000 ^® and BM-1100 ^® from BM Chemie; Mecha pack F 142D ^® , F 172 ^® , F 173 ^® , F 183 ^® , etc. from Dai Nippon Inki Chemicals Co., Ltd.; Prorad FC-135 ^® , FC-170C ^® , FC-430 ^® , FC-431 ^® , etc. from Sumitomo 3M Co., Ltd.; Asahi Grass Co., Ltd.'s Saffron S-112 ^® , S-113 ^® , S-131 ^® , S-141 ^® , S-145 ^® , etc.; Toray Silicone Co., Ltd.'s SH-28PA ^® , Dong-190 ^® , Dong-193 ^® , SZ-6032 ^® , SF-8428 ^® , etc.; Fluorine-based surfactants commercially available under names such as F-482, F-484, F-478, and F-554 from DIC Co., Ltd. can be used.

Additionally, the solvent-free curable composition according to one embodiment may use a silicone-based surfactant along with the fluorine-based surfactant described above. Specific examples of the silicone-based surfactant include TSF400, TSF401, TSF410, and TSF4440 manufactured by Toshiba Silicone, but are not limited thereto.

Surfactants including the fluorine-based 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 solvent-free curable composition. When the surfactant is contained within the above range, the occurrence of foreign substances in the sprayed composition is reduced.

Additionally, a certain amount of other additives such as antioxidants may be added to the solvent-free curable composition according to one embodiment within a range that does not impair the physical properties.

For example, in addition to the solvent-free curable composition described above, the curable composition may provide a solvent-type curable composition containing quantum dots surface-modified by Formula 1 or Formula 2, a binder resin, and a solvent. At this time, the surface-modified quantum dots may be included in an amount of 1% to 40% by weight based on the total amount of the solvent-type curable composition. It can be advantageous in terms of fairness only when the surface-modified quantum dots are included in the above content range compared to the total amount of the solvent-type curable composition.

Below, each component constituting the solvent-type curable composition will be described in detail.

binder resin

The binder resin may include an acrylic resin, a cardo-based resin, an epoxy resin, or a combination thereof.

The acrylic resin is a copolymer of a first ethylenically unsaturated monomer and a second ethylenically unsaturated monomer copolymerizable therewith, and may be a resin containing one or more acrylic repeating units.

The first ethylenically unsaturated monomer is an ethylenically unsaturated monomer containing at least one carboxyl group, and specific examples thereof include acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid, or a combination thereof.

The first ethylenically unsaturated monomer may be included in an amount of 5% to 50% by weight, for example, 10% to 40% by weight, based on the total amount of the acrylic binder resin.

The second ethylenically unsaturated monomer may include aromatic vinyl compounds such as styrene, α-methylstyrene, vinyltoluene, and vinylbenzylmethyl ether; Methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxy butyl (meth)acrylate, benzyl (meth)acrylate, unsaturated carboxylic acid ester compounds such as cyclohexyl (meth)acrylate and phenyl (meth)acrylate; unsaturated carboxylic acid amino alkyl ester compounds such as 2-aminoethyl (meth)acrylate and 2-dimethylaminoethyl (meth)acrylate; Carboxylic acid vinyl ester compounds such as vinyl acetate and vinyl benzoate; Unsaturated carboxylic acid glycidyl ester compounds such as glycidyl (meth)acrylate; Vinyl cyanide compounds such as (meth)acrylonitrile; Unsaturated amide compounds such as (meth)acrylamide; These can be mentioned, and these can be used alone or in a mixture of two or more.

Specific examples of the acrylic binder resin include polybenzyl methacrylate, (meth)acrylic acid/benzyl methacrylate copolymer, (meth)acrylic acid/benzyl methacrylate/styrene copolymer, (meth)acrylic acid/benzyl methacrylate/ Examples include, but are not limited to, 2-hydroxyethyl methacrylate copolymer, (meth)acrylic acid/benzyl methacrylate/styrene/2-hydroxyethyl methacrylate copolymer, and these can be used alone or in combination of two types. The above can also be used in combination.

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

The cardo-based resin may include a repeating unit represented by the following formula (6).

[Formula 6]

In Formula 6 above,

R ³¹ and R ³² are each independently a hydrogen atom or a substituted or unsubstituted (meth)acryloyloxy alkyl group,

R ³³ and R ³⁴ are each independently a hydrogen atom, a halogen atom, or a substituted or unsubstituted C1 to C20 alkyl group,

Z ¹ is a single bond, O, CO, SO ₂ , CR ³⁵ R ³⁶ , SiR ³⁷ R ³⁸ (wherein R ³⁵ to R ³⁸ are each independently a hydrogen atom or a substituted or unsubstituted C1 to C20 alkyl group) or the following Any one of the linking groups represented by Formulas 6-1 to 6-11,

[Formula 6-1]

[Formula 6-2]

[Formula 6-3]

[Formula 6-4]

[Formula 6-5]

(In Formula 6-5 above,

R ^e is a hydrogen atom, ethyl group, C ₂ H ₄ Cl, C ₂ H ₄ OH, CH ₂ CH=CH ₂ or phenyl group)

[Formula 6-6]

[Formula 6-7]

[Formula 6-8]

[Formula 6-9]

[Formula 6-10]

[Formula 6-11]

Z ² is an acid anhydride residue,

t1 and t2 are each independently integers from 0 to 4.

The weight average molecular weight of the cardo-based resin may be 500 g/mol to 50,000 g/mol, for example, 1,000 g/mol to 30,000 g/mol. If the weight average molecular weight of the cardo-based resin is within the above range, a pattern can be easily formed without residue when manufacturing a cured film, there is no loss of film thickness when developing a solvent-type curable composition, and a good pattern can be obtained.

The cardo-based resin may include a functional group represented by the following formula (7) at at least one of both ends.

[Formula 7]

In Formula 7 above,

Z ³ may be represented by the following formulas 7-1 to 7-7.

[Formula 7-1]

(In Formula 7-1, R ^f and R ^g are each independently a hydrogen atom, a substituted or unsubstituted C1 to C20 alkyl group, an ester group, or an ether group.)

[Formula 7-2]

[Formula 7-3]

[Formula 7-4]

[Formula 7-5]

(In Formula 7-5, R ^h is O, S, NH, a substituted or unsubstituted C1 to C20 alkylene group, a C1 to C20 alkylamine group, or a C2 to C20 alkenylamine group.)

[Formula 7-6]

[Formula 7-7]

The cardo-based resin includes, for example, fluorene-containing compounds such as 9,9-bis(4-oxiranylmethoxyphenyl)fluorene; Benzene tetracarboxylic acid dianhydride, naphthalene tetracarboxylic acid dianhydride, biphenyl tetracarboxylic acid dianhydride, benzophenone tetracarboxylic acid dianhydride, pyromellitic dianhydride, cyclobutane tetracarboxylic acid dianhydride, Anhydride compounds such as rylene tetracarboxylic acid dianhydride, tetrahydrofuran tetracarboxylic acid dianhydride, and tetrahydrophthalic acid anhydride; Glycol compounds such as ethylene glycol, propylene glycol, and polyethylene glycol; Alcohol compounds such as methanol, ethanol, propanol, n-butanol, cyclohexanol, and benzyl alcohol; solvent compounds such as propylene glycol methyl ethyl acetate and N-methylpyrrolidone; Phosphorus compounds such as triphenylphosphine; and amine or ammonium salt compounds such as tetramethylammonium chloride, tetraethylammonium bromide, benzyldiethylamine, triethylamine, tributylamine, and benzyltriethylammonium chloride.

When the binder resin is a cardo-based resin, the solvent-type curable composition containing it, especially the photosensitive resin composition, has excellent developability, has good sensitivity during photocuring, and has excellent fine pattern formation.

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

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

The epoxy resin may include, but is not 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.

As commercial products of these compounds, bisphenyl epoxy resins include YX4000, YX4000H, YL6121H, YL6640, and YL6677 from Yukashell Epoxy Co., Ltd.; Cresol novolak-type epoxy resins include EOCN-102, EOCN-103S, EOCN-104S, EOCN-1020, EOCN-1025, EOCN-1027 from Nippon Kayaku Co., Ltd. and Yukashell Epoxy Co., Ltd. )'s Epicoat 180S75; Bisphenol A type epoxy resins include 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.; Phenolic noblock-type epoxy resins include Epicoat 152, 154, and 157H65 from Yukashell Epoxy Co., Ltd. and EPPN 201 and 202 from Nippon Kayaku Co., Ltd.; Other cyclic aliphatic epoxy resins include CY175, CY177 and CY179 from CIBA-GEIGY A.G., ERL-4234, ERL-4299, ERL-4221 and ERL-4206 from U.C.C., and Shodine 509 from Showa Denko Co., Ltd. , Araldite CY-182, CY-192 and CY-184 from CIBA-GEIGY A.G., Epicron 200 and 400 from Dainipbon Ink Kogyo Co., Ltd., and Epicot 871 and 872 from Yukashell Epoxy Co., Ltd. and EP1032H60, ED-5661 and ED-5662 from Celanese Coatings Co., Ltd.; Aliphatic polyglycidyl ethers include Epicoat 190P and 191P from Yukashell Epoxy Co., Ltd., Eporite 100MF from Kyoesha Yushi Chemical Co., Ltd., and Epiol TMP from Nippon Yushi Co., Ltd. You can.

The binder resin may be included in an amount of 1% to 30% by weight based on the total amount of the solvent-type curable composition.

menstruum

The solvent includes, 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 methyl ethyl carbitol, diethyl carbitol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methyl ethyl 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; Alternatively, there are compounds of keto acid esters such as ethyl pyruvate, and also N-methylformamide, N,N-dimethylformamide, N-methylformanilide, N-methylacetamide, and 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, benzoic acid. Examples include ethyl, diethyl oxalate, diethyl maleate, γ-butyrolactone, ethylene carbonate, propylene carbonate, phenyl cellosolve acetate, etc., but are not limited thereto.

For example, the solvent may include glycol ethers such as ethylene glycol monoethyl ether and ethylene diglycol methyl ethyl ether; Ethylene glycol alkyl ether acetates such as ethyl cellosolve acetate; esters such as ethyl 2-hydroxypropionate; Carbitols such as diethylene glycol monomethyl ether; propylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate and propylene glycol propyl ether acetate; It is preferable to use alcohols such as ethanol or a combination thereof.

For example, the solvent is 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-methylpyrroli It may be a polar solvent including dine, N-ethylpyrrolidine, propylene carbonate, γ-butyrolactone, or a combination thereof.

The solvent may be included in a residual amount, for example, 30% by weight to 80% by weight, for example, 35% by weight to 70% by weight, based on the total amount of the solvent-type curable composition. When the solvent is included within the above range, the solvent-type curable composition has an appropriate viscosity and can have excellent coating properties during large-area coating using spin coating and slit.

For example, the solvent-type curable composition may further include any one or more of a polymerizable monomer having a carbon-carbon double bond at the terminal described above, a polymerization initiator, a light diffuser, and other additives in addition to the above components, and may include a specific composition or content. etc. are as described above.

For example, the solvent-type curable composition may be a photosensitive resin composition. In this case, the solvent-type curable composition may include a photopolymerization initiator as the polymerization initiator.

In addition, another embodiment provides a cured film manufactured using the above-described solvent-free curable composition and the solvent-type curable composition, a color filter including the cured film, and a display device including the color filter.

One of the methods for producing the cured film includes forming a pattern by applying the above-described solvent-free curable composition and solvent-type curable composition on a substrate using an inkjet spraying method (S1); and curing the pattern (S2).

(S1) Step of forming a pattern

The solvent-free curable composition is preferably applied to the substrate at a thickness of 0.5 to 20 ㎛ by inkjet dispersion. The inkjet spraying can form a pattern by spraying only a single color per nozzle and spraying repeatedly according to the number of colors required. To reduce the process, the pattern can be formed by spraying the required number of colors simultaneously through each inkjet nozzle. It can also be formed.

(S2) Curing step

Pixels can be obtained by curing the obtained pattern. At this time, as a curing method, either a thermal curing process or a photo curing process can be applied. The thermal curing process is preferably performed by heating to a temperature of 100°C or higher, more preferably by heating to 100°C to 300°C, and more preferably by heating to 160°C to 250°C. You can. The photocuring process irradiates active rays such as UV light of 190 nm to 450 nm, for example, 200 nm to 500 nm. Light sources used for irradiation include low-pressure mercury lamps, high-pressure mercury lamps, ultra-high pressure mercury lamps, metal halide lamps, and argon gas lasers. In some cases, X-rays and electron beams can also be used.

Another method of producing the cured film is to manufacture the cured film using the lithography method using the solvent-free curable composition and the solvent-type curable composition described above. The manufacturing method is as follows.

(1) Application and film formation stage

The above-mentioned curable composition is applied to a desired thickness, for example, 2㎛ to 10㎛, using a method such as spin or slit coating, roll coating, screen printing, or applicator method on a substrate that has undergone a predetermined pretreatment. Afterwards, the solvent is removed by heating at a temperature of 70°C to 90°C for 1 to 10 minutes to form a coating film.

(2) exposure step

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

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

(3) Development stage

Following the exposure step, an alkaline aqueous solution is used as a developer to dissolve and remove unnecessary parts, leaving only the exposed parts remaining to form an image pattern. That is, when developing with an alkaline developer, the unexposed portion is dissolved and an image color filter pattern is formed.

(4) Post-processing step

The image pattern obtained by the above phenomenon can be cured by heating again or irradiating with actinic rays, etc., in order to obtain a pattern excellent in terms of heat resistance, light resistance, adhesion, crack resistance, chemical resistance, high strength, storage stability, etc.

The present invention is not limited to the above-mentioned embodiments, but can be manufactured in various different forms, and those skilled in the art will be able to form other specific forms without changing the technical idea or essential features of the present invention. You will be able to understand that this can be implemented. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

Claims (14)

Quantum dots surface-modified with a compound represented by the following formula (1):
[Formula 1]

In Formula 1, n is an integer of 1, R ¹ is a carboxyl group,
R ² is represented by the following formula 1A,
[Formula 1A]

In Formula 1A,
R ³ is a substituted or unsubstituted vinyl group,
L ¹ is a C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, an allyl group, an epoxy group, or a (meth)acrylate group,
L ² is a single bond, *-C(=O)O-* or *-S-*,
L ³ is represented by the following formula 1C-1 or 1C-2,
[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,
L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,
L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,
m is an integer from 1 to 20,
In Formula 1, n is an integer of 2, and R ¹ is a carboxyl group, *-P(=O)(OH) ₂ or a thiol group,
R ² is 'a C1 to C20 alkyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', 'a vinyl group, an allyl group, an epoxy group, ( Meta) acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group substituted or unsubstituted C1 to C20 alkoxy group', 'vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 C6 to C20 aryl group substituted or unsubstituted with C12 aryl group', 'C6 to C20 substituted or unsubstituted by vinyl group, allyl group, epoxy group, (meth)acrylate group, C1 to C10 alkyl group or C6 to C12 aryl group. Aryloxy group' or 'represented by the following formula 1A',
[Formula 1A]

In Formula 1A,
R ³ is a 'substituted or unsubstituted vinyl group', 'a C1 to C20 alkyl group substituted or unsubstituted by a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group', or 'A C2 to C20 alkenyl group unsubstituted or substituted with a vinyl group, an allyl group, an epoxy group, a (meth)acrylate group, a C1 to C10 alkyl group, or a C6 to C12 aryl group',
L ¹ is a 'C1 to C20 alkylene group substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group', 'substituted or unsubstituted with a vinyl group, allyl group, epoxy group or (meth)acrylate group' C3 to C20 cycloalkylene group' or 'represented by any of the following formulas 1B-1-1 to 1B-7-2',
[Formula 1B-1-1]

[Formula 1B-1-2]

[Formula 1B-2-1]

[Formula 1B-2-2]

[Formula 1B-3-1]

[Formula 1B-3-2]

[Formula 1B-4-1]

[Formula 1B-4-2]

[Formula 1B-5-1]

[Formula 1B-5-2]

[Formula 1B-6-1]

[Formula 1B-6-2]

[Formula 1B-7-1]

[Formula 1B-7-2]

In Formula 1B-1-1 to Formula 1B-7-2,
R ^a and R ^b are each independently a hydrogen atom or a carboxyl group,
R ^c is O, S, NH, C1 to C20 alkylene group, C1 to C20 alkylamine group, or C2 to C20 allylamine group,
L ² is a single bond, *-C(=O)O-* or *-S-*,
L ³ is represented by the following formula 1C-1 or 1C-2,
[Formula 1C-1]

[Formula 1C-2]

In Formula 1C-1 or Formula 1C-2,
L ⁴ is a single bond or a substituted or unsubstituted C1 to C20 alkylene group,
L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,
m is an integer from 1 to 20,
n is an integer of 2.
According to paragraph 1,
The compound represented by Formula 1 is a quantum dot represented by the following Formula 2:
[Formula 2]

In Formula 2,
R ² is represented by the following formula 1A,
[Formula 1A]

In Formula 1A,
R ³ is a substituted or unsubstituted vinyl group,
L ¹ is an unsubstituted C1 to C20 alkylene group,
L ² is a single bond or *-C(=O)O-*,
L ³ is represented by the following formula 1C-1,
[Formula 1C-1]

In Formula 1C-1,
L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,
L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,
m is an integer from 1 to 20.
According to paragraph 2,
In Formula 2,
L ¹ is an unsubstituted C1 to C20 alkylene group,
L ² is *-C(=O)O-*,
L ³ is represented by the following formula 1C-1,
[Formula 1C-1]

In Formula 1C-1,
L ⁴ is a C1 to C20 alkylene group substituted with a combination of ‘ester group, C1 to C20 alkyl group and C2 to C20 alkenyl group’,
L ⁵ is a substituted or unsubstituted C1 to C20 alkylene group,
m is an integer from 1 to 20.
According to paragraph 1,
The quantum dot is a quantum dot having a maximum fluorescence emission wavelength of 500 nm to 680 nm.
Quantum dots according to paragraph 1; and
A solvent-free curable composition comprising a polymerizable monomer having a carbon-carbon double bond at the terminal.
According to clause 5,
The polymerizable monomer is a curable composition having a molecular weight of 220 to 1,000 g/mol.
According to clause 5,
The polymerizable monomer is a curable composition represented by the following formula (5):
[Formula 5]

In Formula 5 above,
R ¹⁰¹ and R ¹⁰² are each independently a hydrogen atom or a substituted or unsubstituted C1 to C10 alkyl group,
L ¹⁰¹ and L ¹⁰³ are each independently a substituted or unsubstituted C1 to C10 alkylene group,
L ¹⁰² is a substituted or unsubstituted C1 to C10 alkylene group or ether group (*-O-*).
According to clause 5,
The solvent-free curable composition,
1% to 60% by weight of the quantum dots, and
40% to 99% by weight of the polymerizable monomer
A curable composition comprising.
According to clause 5,
The solvent-free curable composition further includes a polymerization initiator, a light diffuser, or a combination thereof.
Quantum dots according to paragraph 1;
binder resin; and
menstruum
A solvent-type curable composition comprising a.
According to clause 10,
The solvent-type curable composition,
1% to 40% by weight of the quantum dots;
1% to 30% by weight of the binder resin; and
The remaining amount of the solvent
A curable composition comprising a.
According to clause 10,
The solvent-type curable composition further includes a polymerizable monomer, a polymerization initiator, a light diffuser, or a combination thereof.
A cured film manufactured using the composition according to claim 5 or 10.
A color filter comprising the cured film of claim 13.