TWI683886B - Quantum dot dispersion solution, self-emissive photosensitive resin composition, and color filter and image display device prepared using the same - Google Patents

Abstract

Disclosed is a quantum dot dispersion solution, including quantum dots and a solvent, wherein the solvent does not include halogenated hydrocarbon solvents, aromatic hydrocarbon solvents, and aliphatic hydrocarbon solvents and satisfies the conditions of Hansen solubility parameters represented by specific expressions.

Description

Quantum dot dispersion liquid, self-luminous photosensitive resin composition, Color filter and image display device prepared using the same

The invention relates to a quantum dot dispersion liquid with good dispersibility and harmless to human body, a self-luminous photosensitive resin composition prepared by using the same, and a color filter.

The color filter is a thin film type optical element, which can extract three colors of red, green and blue from white light to display the color in the pixel unit. The size of a pixel is tens to hundreds of microns. In this color filter, a black matrix layer with a predetermined pattern is formed on a transparent substrate to block light from passing through the boundary area between each pixel, and a plurality of pixel portions are sequentially stacked, in which The three main colors (typically red (R), green (G), and blue (B)) of the plurality of colors are arranged in a predetermined pattern to form each pixel in these pixel portions.

Currently, a pigment dispersion method using a pigment dispersion type photosensitive resin has been used as a method for realizing a color filter. However, when the light emitted from the light source passes through the color filter, part of the light will be absorbed by the color filter, resulting in reduced luminous efficacy, and the characteristics of the pigment in the color filter will cause color reproduction Sexual deterioration.

In particular, since the color filter is used in various fields including various image display devices, it not only needs to have excellent pattern characteristics, but also needs to have performances such as high color reproducibility, excellent brightness, and high contrast. Therefore, in order to solve the above problem, a method of preparing a color filter using a self-luminous photosensitive resin composition containing quantum dots has been proposed.

The disclosure content of Korean Patent Application Publication No. 2006-0084668 relates to a quantum dot phosphor. Specifically, this invention discloses a photoluminescent diode (luminescent diode), which includes quantum dots and a solid carrier for fixing the quantum dots. According to this invention, the photoluminescent diode can maintain good luminous efficacy.

However, in the disclosure content of Korean Patent Application Publication No. 2006-0084668, chloroform, toluene, hexane, and the like are used as solvents to disperse quantum dots. These solvents have good dispersibility, but they are harmful to the human body. Furthermore, these solvents are carcinogenic, neurotoxic, and have a high risk of abnormal reproductive function, so the handling environment of the operator requires strict management.

Therefore, in order to use quantum dots, it is necessary to dry and remove harmful solvents. Alternatively, after removing the harmful solvent, a solvent substitution step may be performed to replace with a non-carcinogenic and non-toxic non-volatile organic solvent, and use the substituted Solvents can achieve low risk or no risk in abnormal reproductive function. However, in this step, the quantum efficiency may be reduced, and thus the photoluminescence characteristics of the color filter or image display device prepared using quantum dots may be deteriorated.

Therefore, it is necessary to develop a quantum dot dispersion liquid, which does not include components harmful to the human body and at the same time can have good quantum dot dispersibility. Furthermore, based on another requirement such as a dispersion liquid, the photoluminescence characteristics of color filters or image display devices prepared using the dispersion liquid should be improved.

[Previous Technical Document]

[Patent Document]

(Patent Document 1) Korean Patent Application Publication No. 2006-0084668 (July 25, 2006)

Therefore, based on the problems described above, an object of the present invention is to propose a quantum dot dispersion liquid having good dispersibility and harmless to the human body, and a self-luminous photosensitive resin composition including the quantum dot dispersion liquid.

Another object of the present invention is to provide a color filter and an image display device prepared using the aforementioned quantum dot dispersion liquid and self-luminous photosensitive resin composition, which have good photoluminescence characteristics.

According to the present invention, the above and other objects can be achieved by providing a quantum dot dispersion liquid, which includes a plurality of quantum dots and a solvent, wherein the solvent satisfies the Hansen solubility parameter (Hansen solubility parameter represented by the following formula 1) parameter), and this solvent does not include halogenated hydrocarbon solvents, aromatic hydrocarbon solvents and aliphatic hydrocarbon solvents.

14，2

δp

6，2

δh

8，在式1中，δ_d表示一分散成分(dispersion component)，δ_p表示一極性成分(polar component)，δ_h表示一氫鍵成分(hydrogen bonding component)。 [Formula 1] δ d

14, 2

δp

6, 2

δh

8. In Formula 1, δ _d represents a dispersion component, δ _p represents a polar component, and δ _h represents a hydrogen bonding component.

According to an aspect of the present invention, the above and other objects can be achieved by providing a self-luminous photosensitive resin composition, the self-luminous photosensitive resin composition including the foregoing quantum dot dispersion liquid, and further including an alkali-soluble resin selected from (alkali-soluble resin), a photopolymerizable compound, a photopolymerization initiator, an additional solvent, and an additive.

According to another aspect of the present invention, there is provided a color filter including the self-luminous photosensitive resin composition, and an image display device including the color filter.

The present invention will be explained in more detail below.

In the present invention, when a member is located "on" of another member, this includes the case where this member is in direct contact with another member, and also includes that there may be another member in between situation.

In the present invention, when a part "comprises" any element, unless specifically stated otherwise, this part may further include and does not exclude other elements.

<quantum dots>

One aspect of the invention relates to a quantum dot dispersion liquid. Specifically, one aspect of the present invention relates to a quantum dot dispersion liquid, which includes a plurality of quantum dots and a solvent, wherein the solvent satisfies the Hansen solubility parameter represented by the following formula 1, and the solvent Excludes halogenated hydrocarbon solvents, aromatic hydrocarbon solvents and aliphatic hydrocarbon solvents.

14，2

δ_p

6，2

δ_h

8，在式1中， δ_d表示一分散成分(dispersion component)，δ_p表示一極性成分(polar component)，δ_h表示一氫鍵成分(hydrogen bonding component)。 [Formula 1] δ _d

14, 2

δ _p

6, 2

δ _h

8. In Formula 1, δ _d represents a dispersion component, δ _p represents a polar component, and δ _h represents a hydrogen bonding component.

The quantum dot dispersion liquid according to an aspect of the present invention includes a plurality of quantum dots. Quantum dots can refer to nanometer-sized semiconductor materials. Multiple atoms form a molecule, and multiple molecules form an aggregate made up of multiple small molecules. This aggregate is called a cluster and forms multiple nanoparticles. When these nanoparticles have semiconductor properties, the nanoparticles are called quantum dots. When the quantum dot absorbs energy from the outside to make the quantum dot enter the excited state, the quantum dot will automatically release the energy corresponding to the energy band gap.

When a color filter is prepared using a self-luminous photosensitive resin composition, and the self-luminous photosensitive resin composition includes a quantum dot dispersion liquid according to one aspect of the present invention, the color filter includes Quantum dots, this color filter has photoluminescence when irradiated by light.

In an image display device generally including a color filter, white light passes through the color filter to present colors. During this process, since part of the light is absorbed by the color filter, the luminous efficacy will be reduced. However, when an image display device includes a color filter prepared using the self-luminous photosensitive resin composition according to the present invention, when the color filter is irradiated with light from the light source, the color filter spontaneously emits light, so Can achieve excellent luminous efficacy. And because the shot has a color The light of the color has excellent color reproducibility, and the light is emitted in all directions due to photoluminescence, so the viewing angle can also be improved.

Quantum dot particles are not particularly limited, as long as quantum dot particles can emit light when excited by light. For example, the quantum dots may be selected from the group consisting of group II-VI semiconductor compounds, group III-V semiconductor compounds, group IV-VI semiconductor compounds, group IV elements or compounds containing group IV elements, and any combination of the foregoing These compounds can be used alone or in combination of two or more.

Specifically, the group II-VI semiconductor compound may be a binary compound selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; selected from CdSeS , CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe and mixtures thereof, and ternary compounds selected from the group consisting of; At least one component of the quaternary compound of the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof, but the invention is not limited thereto.

The III-V semiconductor compound may be a binary compound selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; selected from the group consisting of GaNP , GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP and mixtures of ternary compounds; and selected from the group consisting of GaAlNAs, GaAlNSb, At least one component of the group of quaternary compounds composed of GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb, and mixtures thereof.

The group IV-VI semiconductor compound may be a binary compound selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, At least one component of a ternary compound of the group consisting of SnPbSe, SnPbTe, and mixtures thereof; and a quaternary compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof, but the invention is not limited thereto.

The group IV element or the compound containing the group IV element may be a single element compound selected from the group consisting of Si, Ge and mixtures thereof; and a binary compound selected from the group consisting of SiC, SiGe and mixtures thereof At least one component of the group, but the invention is not limited thereto.

The quantum dot may have a homogeneous single structure; for example, a core-shell structure, a gradient structure, or a double structure of the analogue thereof; or a mixed structure of the foregoing.

Specifically, in the core-shell structure, each material of the core and the shell may be composed of the above-mentioned different types of semiconductor compounds. For example, the core may include one or more materials selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS, and ZnO, but the present invention is not limited thereto. The shell may include one or more materials selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, and HgSe, but the present invention is not limited thereto.

Quantum dots can be synthesized using a wet chemical process, a metal organic chemical vapor deposition (MOCVD) process, or a molecular beam epitaxy (MBE) process, but the invention is not limited thereto.

The wet chemical process is a method of adding precursor materials to organic solvents to grow particles. When the crystal grains grow, the organic solvent naturally coordinates to the surface of the quantum dot crystal grains and acts as a dispersant, thereby adjusting the growth of the crystal grains. Therefore, compared with the vapor deposition method such as metal organic chemical vapor deposition or molecular beam epitaxy, the growth of nanoparticles can be controlled by an easier and cheaper process. Therefore, the quantum dots according to the present invention are preferably prepared using a wet chemical process.

In an embodiment of the invention, the quantum dot further includes an organic ligand. Multiple organic ligands can bind to the surface of the quantum dot to stabilize the quantum dot. Organic ligands can include C5-C20 alkyl carboxylic acids, C5-C20 alkenyl carboxylic acids, C5-C20 alkynyl carboxylic acids, monothiol groups, phosphoric acid, pyridine, mercapto alcohols, phosphines, phosphine monoxide And the like, but the invention is not limited to this. In terms of effectively protecting the surface of the quantum dot and increasing the stability of the quantum dot, the organic ligand is preferably selected from the group consisting of C5~C20 alkyl carboxylic acid, C5~C20 alkenyl carboxylic acid, C5~C20 alkynyl group More than one component in the group consisting of carboxylic acid, monothiol group and phosphoric acid.

Organic ligands cover at least 5% of the total area of the surface of quantum dots.

The organic ligand may be included in a commercially available quantum dot dispersion liquid. When the organic ligand is not included in the quantum dot dispersion liquid, the organic ligand can be directly added to the quantum dot dispersion liquid. When organic ligands are added directly to quantum dots When dispersed in liquid, it may contain 0.1 to 10 mole organic ligands per 1 mole of quantum dots.

According to an embodiment of the present invention, the total weight of the quantum dot dispersion liquid is 100% by weight, and may include 5% to 70% by weight of quantum dots, preferably 10% to 65% by weight of quantum dots. More preferably, it may contain 15% to 60% by weight of quantum dots. When the content of quantum dots is within the above range, a self-luminous photosensitive resin composition having good photosensitivity can be provided. When the content of quantum dots is lower than the above range, the photosensitivity will decrease. When the content of quantum dots is higher than the above range, compared with the content of quantum dots, other components such as an alkali-soluble resin and a photopolymerizable compound described later will be relatively low, which may make it difficult to prepare a color filter. Therefore, it is preferable to adjust the content of quantum dots to the above range.

Since the quantum dot dispersion liquid of the present invention includes a solvent which satisfies the Hansen solubility parameter represented by the following formula 1, the quantum dots can be more dispersed. Moreover, since the quantum dot dispersion liquid does not include halogenated hydrocarbon solvents such as chloroform and methylene chloride, aromatic hydrocarbon solvents such as benzene and toluene, and aliphatic hydrocarbon solvents such as n-hexane, and the above solvents are harmful to human bodies, this quantum dot is processed The staff of the dispersion can avoid exposure to harmful environments that may cause carcinogenesis, neurotoxicity, abnormal reproductive function, or similar conditions.

14，2

δ_p

6， 2

δ_h

8，在式1中，δ_d表示一分散成分(dispersion component)，δ_p表示一極性成分(polar component)，δ_h表示一氫鍵成分(hydrogen bonding component)。 [Formula 1] δ _d

14, 2

δ _p

6, 2

δ _h

8. In Formula 1, δ _d represents a dispersion component, δ _p represents a polar component, and δ _h represents a hydrogen bonding component.

According to an embodiment of the present invention, specific specific examples of the solvent may include one or more selected from the group consisting of esters and C6-C10 ethers. In this case, the dispersibility can be improved, and the luminous intensity of the self-luminous photosensitive resin composition including this solvent can be increased.

Specific specific examples of the solvent may include methyl isoamyl ketone, diisobutyl ketone, diethyl carbonate, ethyl butyrate, ethyl isobutyrate Ester (ethyl isobutyrate), tert-butyl acetate, isopropyl propionate, methyl-3-methylbutanoate, propyl propionate ), methyl 2-methyl butanoate, sec-butyl acetate, methyl pentanoate, isobutyl acetate, butyl acetate (butyl acetate), methyl pivalate, sec-butyl propionate, n-butyl propionate, 2-methyl butyl acetate (2- methyl butyl acetate), ethyl 2-methylbutyrate, methyl 2-methylbutyrate 2-methylpentanoate), 2-pentyl acetate, neopentyl acetate, 3-methylbutan-2-yl acetate, iso Isopropyl isobutyrate, propyl isobutyrate, ethyl isovalerate, methyl 3-methyl pentanoate, ethyl valerate (ethyl pentanoate), methyl 4-methyl pentanoate, methyl hexanoate, isoamyl acetate, pentyl acetate, isobutyric acid Isopropyl butyrate, propyl butanoate, isobutyl propionate, 2,2-dimethylbutanoic acid methyl ester, tertiary Ethyl valerate (ethyl pivalate), tert-amyl acetate, tert-butyl propionate, methyl 3,3-dimethylbutyrate ), diethylacetic acid methyl ester (diethylacetic acid methyl ester), 3-pentyl acetate (2-pentyl acetate), 2,3-dimethylbutanoic acid methyl ester (2,3-dimethylbutanoic acid methyl ester ), propyl 2-methylbutanoate, ethyl hexanoate, isopropyl 2-methylbutanoate, isobutyl isobutyl (isobutyl 2-methylbutanoate) isobutanoate), 2-methylbutyl propionate, 2-hexyl acetate, 1-methylbutyl propanoate, 2- Ethyl-3-methylbutyrate (methyl 2-ethyl-3-methylbutyrate), acetic acid-3-methyl 3-methylpentyl acetate, 3-hexyl acetate, butyric acid-2,2-dimethyl-3-ethyl Acetyloxybutane (2,2-dimethyl-3-acetoxybutane), ethyl 2-methylpentanoate, sec-butyl butyrate, ethyl 3-methylpentanoate Ester (ethyl 3-methylpentanoate), ethyl 2,3-dimethylbutanoate (ethyl 2,3-dimethylbutanoate), acetate-2,3-dimethyl-2-butyl ester (2,3-dimethyl-2 -butyl acetate), 2-ethylbutyl acetate, acetic acid-(2,2-dimethyl-butyl ester), acetic acid-(2,2-dimethyl-butyl ester), acetic acid -2,3-dimethylbutyl acetate, 3-methyl-1-pentyl acetate, and 3,3-dimethyl acetate Butyl ester (3,3-dimethylbutyl acetate), n-butyl isobutyrate, isopropyl pentanoate, butyl butyrate, amyl propionate ), butyl acetate (hexyl acetate), 3-methylbutanoate (propyl 3-methylbutanoate), methyl heptanoate (methyl heptanoate), isopropyl 3-methylbutanoate (isopropyl 3- methylbutanoate), isobutyl butyrate, sec-butyl isobutyrate, propyl pentanoate, isoamyl propionate, 4-methylpropyl Ethyl 4-methylpentanoate, 4-methyl-1-pentyl acetate, methyl 5-methylhexanoate, 2-ethyl Methyl 2-ethyl-2-methylbutyrate, 2,2-dimethyl-pentanoic acid methyl ester, 2,2-bis Ethyl 2,2-dimethylbutanoate ), i-propyl pivalate, propyl 2,2-dimethylpropanoate, Propionate-2,2-dimethyl-1-propanate (2,2-dimethyl-1-propanol propanoate), ethyl 3,3-dimethylbutanoate (ethyl 3,3-dimethylbutanoate), 2- 2-methyl-3-pentyl acetate, 2-acetic acid-(2-methyl-pentyl ester), 4-methyl- 2-methyl-2-pentyl acetate, tert-butyl 2-methylpropanoate, methyl 2,3-dimethylvalerate (2,3 -dimethyl-valeric acid methyl ester), 2-ethyl-valeric acid methyl ester, methyl-2-methylcaproate, 2-methyl 2-methylpentan-2-yl acetate, tert-butyl butyrate, 3-ethyl-valeric acid methyl ester, Ethyl 2-ethylbutanoate, sec-amyl propionate, methyl 2,3,3-trimethyl butanoate ), 3,3-dimethylpentanoic acid methyl ester, tert-amyl propanoate, methyl 2,4-dimethylpentanoic acid methyl ester 2,4-dimethyl pentanoate), 2,2,3-trimethylbutanoate (methyl 2,2,3-trimethylbutanoate), 3-methyl-2-pentyl acetate (3-methyl-pentyl- 2-acetate), methyl 4,4-dimethylpentanoate, methyl 3,4-dimethylpentanoate, isobutyl valerate (valeric acid isobutyl ester), 2-methylbutyl butanoate, valeric acid sec-butyl ester), 2-pentyl butanoate, 2-methylpropyl 2-methylbutanoate, 2- N-butyl 2-methylbutanoate, isopentyl butanoate, isobutyl isopentanoate, 1-methyl propionate (1-methyl) pentyl propanoate), 1-methylhexyl acetate, 2-methyl-butyric acid sec-butyl ester, 2-methylpropanoic acid-2-methyl 2-methylpropanoic acid 2-methylbutyl ester, ethyl 3-methylhexanoate, ethyl 2-methylhexanoate, 1-heptyl acetate ( 1-heptyl acetate), methyl 3-methylheptanoate, 1,1,2,2-tetramethylpropyl acetate, acetic acid -1-acetoxy-2,3,3,-trimethylbutane (1-acetoxy-2,3,3-trimethylbutane), acetic acid-(2-ethyl-2-methylbutyl ester) ( acetic acid-(2-ethyl-2-methyl-butyl ester)), acetic acid-(3,3-dimethyl-pentyl ester) (acetic acid-(3,3-dimethyl-pentyl ester)), acetic acid-(1 ,3,3-trimethylbutyl ester) (acetic acid-(1,3,3-trimethyl-butylester)), 2,4-dimethyl-3-acetoxypentane (2,4-dimethyl- 3-acetoxypentane), acetic acid-(2-ethyl-3-methyl-butyl ester) (acetic acid-(2-ethyl-3-methyl-butyl ester)), acetic acid-(3-methylhexyl ester) (acetic acid acid-(3-methyl-hexyl ester)), acetic acid-(4-methyl-hexyl ester)), isobutyric acid-(1,2-dimethylpropyl ester) )(isobutyric acid-(1,2-dimethyl-propyl ester)), 4-methyl-valeric acid propyl ester, 4-methylhexanoic acid 4-methyl-hexanoic acid ethyl ester, 5-methylheptanoate, isovaleric acid sec-butyl ester), isobutyric acid isopentyl ester, butyl pentanoate, propyl hexanoate, hexyl propionate, methyl octanoate , 5-methylhexyl acetate, ethyl isoamyl acetate, pentyl butyrate, ethyl heptanoate, isopropyl hexanoate Isopropyl hexanoate, butyl 3-methylbutanoate, 2-ethyl-3-methyl-valeric acid methyl ester, 2 -Methyl 2-isopropyl-3-methylbutanoate, 2-ethyl-3-methyl-butyric acid ethyl ester ), 2-ethyl-valeric acid ethyl ester, methyl 2-ethylhexanoate, ethyl 2,4-dimethylvalerate (ethyl 2 ,4-dimethylpentanoate), methyl 2,5-dimethylhexanoate, (acetic acid-(1-ethyl- 3-methyl-butyl ester)), 4-heptyl acetate, 4-methyl-2-pentyl propionate, 5-methyl- 2-hexyl acetate (5-methylhexan-2-yl acetate), 2,2-diethyl-butyric acid methyl ester (acetic acid-(1,1-diethyl Propyl ester) (acetic acid-(1,1-diethyl-propyl ester)), 2,3-dimethyl-hexanoic acid methyl ester, 2-ethyl-2- Methyl valerate (2-ethyl-2-methyl- valeric acid methyl ester), 2-ethyl-2-methylbutyric acid ethyl ester, 2,2-dimethyl Ethyl valerate (ethyl 2,2-dimethylpentanoate), methyl 2,2-dimethylhexanoate (2,2-dimethyl-hexanoic acid methyl ester), 2,2-dimethyl-butyric acid propyl ester, pivalic acid tert-butyl ester ), isobutyl pivalate, pivalic acid butyl ester, acetic acid-(1,2-dimethyl-pentyl) ester)), 2,4,4-trimethylvaleric acid methyl ester (2,4,4-trimethyl-valeric acid methyl ester), acetic acid-(1-ethyl-1-methylbutyl ester) (acetic acid -(1-ethyl-1-methyl-butyl ester)), 3,3-dimethyl-valeric acid ethyl ester, isobutyric acid tert- pentyl ester), tert-amyl butyrate, 3-acetoxy-2,2-dimethyl-propane (3-acetoxy-2,2-dimethyl-pentane), propionic acid-(3 ,3-dimethylbutyl ester) (propionic acid-(3,3-dimethyl-butyl ester)), isopropyl 3,3-dimethylbutanoate, 3,3- 3,3-dimethyl-butyric acid propyl ester, neonylyl 2-methylpropanoate, neonylyl butanoate, 3-methyl Tert-butyl 3-methyl butanoate, tert-butyl pentanoate, 3,3,4-trimethyl-valeric acid methyl ester), 4,5-dimethyl-hexanoic acid methyl ester, ethyl 4,4-dimethylpentanoate, 3 , Ethyl 4-dimethylvalerate (3,4-dimethy l-pentanoic acid ethyl ester), acetate-(1-isopropylbutyl ester) (acetic acid-(1-isopropyl-butyl ester)), 2-propyl 2-methylpentanoate, methyl 6-methylheptanoate, 2 -Isopropyl 2-ethylbutyrate, 2-acetoxy-4-methyl-hexane, 2,2,3,3-tetramethyl Methyl butyrate (methyl 2,2,3,3-tetramethylbutanoate), ethyl 2,2,3,3-tetramethylbutanoate (ethyl 2,2,3,3-tetramethylbutanoate), 4-methyl 4-methyl-heptanoic acid methyl ester, methyl 4-ethylhexanoate, ethyl 2,3,3-trimethylbutanoate (ethyl-2,3, 3-trimethylbutanoate), 2,2-dimethyl-pentanol-(1)-acetate (2,2-dimethyl-pentanol-(1)-acetate), 2,4-dimethyl-2-pentyl Acetate (2,4-dimethyl-2-pentyl acetate), 2-methyl-2-hexyl acetate (4-methyl-2-hexyl acetate), 4,4-dimethylpentyl acetate (4, 4-dimethylpentyl acetate, pentyl isobutanoate, methyl 2-methylheptanoate, 2,2-dimethylpropanoic acid-2-butanyl ester (butan-2- yl 2,2-dimethylpropanoate), 4,4-dimethylhexanoate (methyl 4,4-dimethylhexanoate), 2-propyl-pentanoic acid methyl ester, hexanoic acid- (2,4-dimethylmethyl ester) (hexanoic acid-(2,4-dimethyl methyl ester)), 2,2,3-trimethylbutanoic acid ethyl ester ), 2-methylhexylacetate, methyl-3,4,4-trimethylpentanoa te), propyl 2-ethylbutyrate (propyl-2-ethylbutanoate), isopropyl 2,2-dimethylbutanoate (isopropyl 2,2-dimethylbutanoate), 3-ethyl-4-methyl-pentanoic acid methyl ester, 2,2,4-trimethylpentanoic acid methyl (methyl 2,2,4-trimethylpentanoate), 2,3-dimethyl-3-pentylacetate, 2-pentan-3 -yl 2-methylpropanoate), 3-ethyl-3-methyl-pentanoic acid methyl ester, methyl 3,4-dimethylhexanoate (methyl 3, 4-dimethylhexanoate), 3,3-dimethylphenyl-1-tin (3,3-dimethylphenyl-1-tin), ethyl-3-ethyl-pentanoate, 2, Methyl 2,3-trimethylpentanoate (methyl 2,2,3-trimethylpentanoate), 2-ethyl-3,3-dimethylpentanoate (methyl 2-ethyl-3,3-dimethylpentanoate) , Pentane-3-yl butyrate, 4-methyl-3-hexyl acetate, 2-methyl-3-methylbutyl propane 2-methyl-3-methylbutyl propanoic acid ester, 3-methoxy-1-pentyl propionate, 2-methylpropanoic acid 2-pentyl ester (2-pentyl 2-methylpropanoate), tert-butyl 2-methylbutanoate, methyl 5,5-dimethylhexanoate, propionic acid- 3,3-dimethyl-2-butyl propionate, 1-ethyl butyl propanoate, 2-methyl-1 propionate -2-methyl-1-pentyl propanoate, n-propyl 2-methylvalerate, sec-amyl valerate, sec-butyl hexanoate ( sec -butyl hexanoate), isovaleric acid-2-methylbutyl Ester (2-methylbutyl isovalerate), pentanoic acid 2-methylbutyl ester, 2,2,3-trimethyl-valeric acid (2,2,3-trimethyl-valeric acid ethyl ester), 1-methylhexyl propanoate, 2-hexyl-2-butenoate, 2,2-dimethyl-3-hexyl acetate (2 ,2-dimethyl-3-hexylacetate), 2-methyl-1-butyl 2-methylbutanoate, 2-methylbutanoic acid 3-methyl 3-methylbutyl 2-methylbutanoate, methyl 2,6-dimethylheptanoate, 2-octyl acetate, 1-ethylhexyl acetate Ester (1-ethylhexyl acetate), acetic acid-(1-isopropyl-2,2-dimethylpropyl ester) (acetic acid-(1-isopropyl-2,2-dimethyl-propyl ester)), acetic acid-( 2-ethyl-3,3-dimethylbutyl ester) (acetic acid-(2-ethyl-3,3-dimethyl-butyl ester)), acetic acid-(2,2,3-trimethylpentyl ester) (acetic acid-(2,2,3-trimethyl-pentyl ester)), acetic acid-(2,2,3,3-tetramethyl butyl ester) (acetic acid-(2,2,3,3-tetramethyl- butyl ester)), acetic acid-(1,2,2,3-tetramethyl-butyl ester) (acetic acid-(1,2,2,3-tetramethyl-butyl ester)), acetic acid-(2-isopropyl -3-methylbutyl ester) (acetic acid-(2-isopropyl-3-methyl-butyl ester)), acetic acid-(4-ethylhexyl ester) (acetic acid-(4-ethyl-hexyl ester)), Acetic acid-(2,2-diethyl-butyl ester) (acetic acid-(2,2-diethyl-butyl ester)), 3-methyl-valeric acid sec-butyl ester , Isoamyl 3-methylbutyrate ( isopentyl 3-methylbutanoate), isopropyl heptanoate, 4-methyl-valeric acid isobutyl ester), 4-methyl-heptanoic acid ethyl ester, 3-methylbutyl pentanoate, butyl hexanoate, n-valeric acid N-pentyl n-pentanoate, n-propyl heptanoate, 5-methyl-heptanoic acid ethyl ester, 6-methyl heptanoic acid ethyl ester Ethyl (ethyl 6-methylheptanoate), hexyl butyrate, octanoic acid ethyl ester, methyl 6-methyloctanoate, heptyl propionate, Nonanoic acid methyl ester, 1-octyl acetate, 2,2,3,3-tetramethyl butyric acid ethyl ester (2,2,3,3-tetramethyl- butyric acid ethyl ester), acetic acid-(1-ethyl-2,2-dimethyl-butyl ester) (acetic acid-(1-ethyl-2,2-dimethyl-butyl ester)), acetic acid-(1-iso Acetic acid-(1-isopropyl-pentyl ester)), acetic acid-(1,2-dimethyl-hexyl ester) (acetic acid-(1,2-dimethyl-hexyl ester)), 2- 2-iso-propyl-3-methyl-butyric acid ethyl ester, propionic acid-(3,3-dimethylpentyl ester) (propionic acid-(3, 3-dimethyl-pentyl ester)), acetic acid-(1-ethyl-3-methylpentyl ester) (acetic acid-(1-ethyl-3-methyl-pentyl ester)), 2,3,5-trimethyl Methyl hexanoate (2,3,5-trimethyl-hexanoic acid methyl ester), acetic acid-(1-ethyl-2-methylpentyl ester) (acetic acid-(1-ethyl-2-methyl-pentyl ester )), propionic acid-(1-ethyl-2,2-dimethylpropyl ester) (propionic acid-(1-e thyl-2,2-dimethyl-propyl ester)), ethyl 2,2-diethylbutanoate (ethyl 2,2-diethylbutanoate), isopropyl 2,2,3-trimethylbutanoate (2, 2,3-trimethyl-butyric acid isopropyl ester), Acetic acid-(1-ethyl-3,3-dimethyl-butyl ester) (acetic acid-(1-ethyl-3,3-dimethyl-butyl ester)), 2,2-dimethyl butyric acid butyl ester ( butyl 2,2-dimethylbutyrate), 3-methyl-2-propyl-valeric acid methyl ester, 2-methyl-heptanoic acid ethyl ester), methyl 2-methyloctanoate, butyric acid-(1,3-dimethyl-butyl ester), butyric acid-(1,3-dimethyl-butyl ester), 3 -3-ethyl-hexanoic acid ethyl ester, 2-ethyl-2-methyl-valeric acid ethyl ester, 3,5- Ethyl 3,5-dimethylhexanoate, 3,3-dimethyl-valeric acid propyl ester, 2,2,4,4-tetramethyl Methyl valerate (2,2,4,4-tetramethyl-pentanoic acid methyl ester), ethyl 2,2-dimethyl-hexanoate (ethyl 2,2-dimethyl-hexanoate), butyric acid-(2- (Butyric acid-(2-ethyl-butylester)), 2-ethyl-4-methyl-valeric acid ethyl ester, 2-propyl Ethyl 2-propylpentanoate, methyl 2-propylhexanoate, ethyl 2-ethylhexanoate, acetic acid-(1,1-diethyl Butyl butyl ester) (acetic acid-(1,1-diethyl-butyl ester)), 2,5-dimethyl-hexanoic acid ethyl ester, 4,5-dimethyl Ethyl 4,5-dimethylhexanoate, acetic acid-(1-isobutyl-buty) lester)), acetic acid-(1-ethyl-4-methyl-pentyl ester) (acetic acid-(1-ethyl-4-methyl-pentyl ester)), acetic acid-(1-methyl-1- Propyl butyl ester) (acetic acid-(1-methyl-1-propyl-butyl ester)), isovaleric acid tert-pentyl ester, 3-propyl hexanoic acid methyl ester (3-propyl -hexanoic acid methyl ester), 3-ethyl-heptanoic acid methyl ester, acetic acid-(1,1,4-trimethylpentyl ester) (acetic acid-(1,1, 4-trimethyl-pentyl ester)), acetic acid-(1,5-dimethylhexyl ester) (acetic acid-(1,5-dimethyl-hexyl ester)), 3-methylheptanoic acid ethyl ester (3-methyl -heptanoic acid ethyl ester), 3,3,5-trimethyl-hexanoic acid methyl ester, 3,3-dimethylheptanoic acid methyl ester (3,3 -dimethyl-heptanoic acid methyl ester), 3,3-dimethyl-valeric acid isopropyl ester, 2-ethylhexyl acetate, 2, Ethyl 2,4-trimethylpentanoate (ethyl 2,4,4-trimethylpentanoate), butyl neopentanoate, neopentyl pivalate, isoamyl tert-valerate ( pivalic acid isopentyl ester), 2-ethyl-butyric acid tert-butyl ester, 3,3-dimethyl-butyric acid sec -butyl ester), acetic acid-(1,4-dimethylbutyl)ester, acetic acid-(1,4-dimethylbutyl)ester, sec-amyl isovalerate, 3-acetyl Oxygen-2,4-dimethylhexane (3-acetoxy-2,4-dimethylhexane), 3,3-diethyl-pentanoic acid methyl ester, 4,4 -Methyl dimethylheptanoate (methyl 4,4-dimet hylheptanoate), 3,5,5-trimethylhexanoate (methyl 3,5,5-trimethylhexanoate), acetic acid 4-octyl ester), 3,5-dimethyl-heptanoic acid methyl ester, 1-acetoxy-4,4-dimethylhexane (1-acetoxy-4,4 -dimethyl-hexane), pentyl 3-methylbutanoate, 7-methyloctanoic acid methyl ester, and 2-ethyl-heptanoic acid methyl ester heptanoic acid methyl ester), 2,4-dimethylheptanoate (methyl 2,4-dimethylheptanoate), 2,2-dimethyl heptanoate (methyl 2,2-dimethyl heptanoate), 2,2 -Pentyl 2,2-dimethyl propanoate, ethyl 2,3,4-trimethylvalerate, tert-butyl caproate (tert- butyl hexanoate), 3-acetoxy-2,5-dimethyl-hexane, 1,1,3,3-tetramethylbutyl acetate (1 ,1,3,3-tetramethylbutyl acetate), 2,2,4-trimethylpentyl acetate (2,2,4-trimethylpentyl acetate), methyl 2,2,3,3-tetramethylpentyl acetate (methyl 2,2,3,3-tetramethylpentanoate), pentanoic acid-(2,2,3,4-tetramethylmethyl ester) (pentanoic acid-(2,2,3,4-tetramethyl-methyl ester)) , 2-propyl-2-methyl-pentanoic acid methyl ester, 3,3-dimethylbutanoic acid-1,1-dimethylethyl ester (1 ,1-dimethylethyl 3,3-dimethylbutanoate), tert-butyl 4-methylpentanoate, 2-isopropyl-3,3-dimethylbutanoate (2-isopropyl -3,3-dimethyl-butyric acid methyl ester), 2-ethyl-2-methyl-2-methylhexanoate, 2-ethyl-3,3-dimethylbutyric acid Ethyl ethyl (ethyl 2-ethyl-3,3-dimethylbutanoate), isobutyric acid Ester (hexyl isobutanoate), methyl 5,5-dimethylheptanoate (methyl 5,5-dimethylheptanoate), methyl 2,3,4-trimethylhexanoate (methyl 2,3,4-trimethylhexanoate), 2,3-dimethyl-2-ethylpentanoate (methyl 2,3-dimethyl-2-ethylpentanoate), 3-methyl octanoic acid methyl ester, 2,2- 2,2-dimethylhexyl acetate, propylneoheptanoate, isopropyl 2-methylhexanoate, 2-propylpentyl acetate (2 -propyl-pentyl-acetate), butyl 2-ethyl butyrate, 4-methyloctanoic acid methyl ester, 2-methylpentanoic acid-(1- (2-methylpentanoic acid-(1-methyl propyl ester)), 2,2,4-trimethyl-hexanoic acid methyl ester, hexanoic acid -(2,2,5-trimethylmethyl) (hexanoic acid-(2,2,5-trimethyl-methyl ester)), 4-methylpentyl isobutyrate, butyl 3-methylpentyl butyrate, ethyl 3,3,4-trimethylpentanoate, valeric acid-(3,3,4-tris Pentanoic acid-(3,4,4-trimethyl-ethyl ester), tert-amyl pivalate, isobutyl 3,3-dimethylbutyrate ,3-dimethylbutyrate), 1-isopropyl-1,2-dimethylpropyl acetate, ethyl 4-ethylhexanoate , 2-ethyl-3,3-dimethylvalerate (methyl 2-ethyl-3,3-dimethylpentanoate), methyl 3,6-dimethylheptanoate, isobutyl hexanoate, 3,3,4,4-tetra Methyl methyl valerate (3,3,4,4-tetramethyl pentanoic acid methyl ester), 2-methylvaleric butyl ester, pentyl 2- methylbutanoate), neopentyl 2-methylbutanoate, ethyl 3,3-dimethylhexanoate, 4-ethyl-3-hexyl acetate ( 4-ethyl-3-hexyl acetate), propionate-2,4-dimethylpentane-3-yl propionate, methyl neononanoate, 4, Methyl 4,5-trimethylhexanoate (methyl 4,4,5-trimethylhexanoate), methyl diisopropyl propionate (methyl diisopropyl propionate), 4-methylhexanoic acid 1-methyl ethyl ester (1 -methylethyl 4-methylhexanoate), butanoic acid 1-ethylbutyl ester, 1-ethylpentyl propanoate, pentane -3-yl pentanoate), methyl 4-ethylheptanoate, pentane-3-yl 3-methylbutanoate, 5,5-dimethyl Ethyl 5,5-dimethylhexanoate, 2-methyl-3-methylbutylbutanoic acid ester, neryl acetate, Dipropylene glycol dimethyl ether or dipropylene glycol methyl ether acetate and the like. According to an embodiment of the present invention, for good photoluminescence effect or color reproducibility, tert-butyl acetate (tert-butyl acetate) is preferably used acetate), sec-butyl acetate, isobutyl acetate, n-butyl acetate, 2-methyl butyl acetate, 2-pentyl acetate, neopentyl acetate, 3-methylbutan-2-yl acetate, isoamyl acetate acetate), n-pentyl acetate, tert-amyl acetate, 3-pentyl acetate, 2-hexyl acetate , 3-methylpentyl acetate, 3-hexyl acetate, 2,3-dimethyl-2-butyl acetate (2,3-dimethyl- 2-butyl acetate), 2-ethylbutyl acetate, 2- 2,3-dimethylbutyl acetate, 3-methyl-1-acetate 3-methyl-1-pentyl acetate, 3,3-dimethylbutyl acetate, n-hexyl acetate, 4-methyl acetate 1 -4-methyl-1-pentyl acetate, 2-methyl-3-pentyl acetate, 4-methyl-2-pentyl acetate (4- methyl-2-pentyl acetate), 2-methyl-2-anyl acetate (2-methylpentan-2-yl acetate), 1-methylhexyl acetate, 1-heptyl acetate (1-heptyl acetate), 1,1,2,2-tetramethylpropyl acetate (1,1,2,2-tetramethylpropyl acetate), 5-methylhexyl acetate, ethyl Ethyl isoamyl acetate, 4-heptyl acetate, 5-methylhexan- 2-yl acetate), 2,4-dimethyl-2-pentyl acetate (2,4-dimethyl-2-pentyl acetate), 2-methyl-2-hexyl acetate (4-methyl-2-hexyl acetate), 4,4-dimethylpentyl acetate (4,4- dimethylpentyl acetate), 4-methyl-3-hexyl acetate, 4-octyl acetate, 2-ethylhexyl acetate ), 1-octyl acetate, 2-ethylhexyl acetate, 1,1,3,3-tetramethylbutyl acetate (1,1,3 ,3-tetramethylbutyl acetate), 2,2,4-trimethylpentyl acetate (2,2,4-trimethylpentyl acetate), 2,2-dimethylhexyl acetate, 1-isopropyl-1,2-dimethylpropyl acetate (1-isopropyl-1,2-dimethylpropyl acetate), 4-ethyl-3-hexyl acetate (4-ethyl-3-hexyl acetate) , Dipropylene glycol dimethyl ether (dipropylene glycol dimethyl ether) or dipropylene glycol methyl ether acetate (dipropylene glycol methyl ether acetate)

These solvents may be used alone or in combination of two or more.

Relative to the total weight of the quantum dot dispersion liquid is 100% by weight, may contain 5% to 95% by weight of the solvent, preferably may contain 20% to 90% by weight of the solvent, more preferably may contain 30% to 80% Weight percent solvent. When the content of the solvent is lower than the above range, the dispersibility may decrease. When the content of the solvent is higher than the above range, it may be difficult to control the solid content of the resin composition.

The entire solvent used in the quantum dot dispersion liquid of the present invention satisfies the aforementioned solvent conditions. That is to say, the solvent of the present invention as a whole satisfies the Hansen solubility parameter represented by Formula 1, and does not include halogenated hydrocarbon solvents, aromatic hydrocarbon solvents and aliphatic Hydrocarbon solvents. Therefore, according to an embodiment of the present invention, even if each solvent component in the quantum dot dispersion liquid of the present invention does not satisfy the Hansen solubility parameter as represented by Formula 1, the entire solvent including these components satisfies the formula 1 The Hansen solubility parameter.

In an embodiment of the invention, the quantum dot dispersion liquid may further include a phosphate compound. In this case, the dispersion of quantum dots in the solvent can be improved, and the quantum efficiency can be improved. Furthermore, it is possible to suppress the decrease in luminous efficacy and defects in light sensitivity. In addition, compatibility with other constituent components of the self-luminous photosensitive resin composition including the quantum dot dispersion liquid can be improved.

The phosphate compound may include a phosphate ((HO) ₂ PO(OR)) or phosphoric acid (H ₃ PO ₄ ) in which the hydroxyl group in the structure or the hydrogen atom in the hydroxyl group is not substituted or is substituted by other functional groups. For example, the phosphate compound may be represented by H ₂ PO ₃ ^- , but the present invention is not limited thereto. In addition, the "phosphoric acid ester" in the present invention may include selected from phosphorous acid derivatives, phosphoric acid derivatives, phosphonic acid derivatives, and phosphorinic acid derivatives derivatives) in more than one group.

The phosphate compound may further include one or more of a polyether functional group, a polyester functional group and a phosphate function based on one molecule.

In the present invention, "poly" means that a compound is composed of a large number of repeating units. "Polyether functional group" and "polyester functional group" can be represented by including ether A monofunctional group consisting of 1 to 20 repeating units of a group and an ester group. Preferably, in the present invention, it is 5 to 20 repeating units, more preferably 10 to 20 repeating units. In this case, compatibility can be improved.

When the phosphate compound further includes a polyester function based on one molecule, the compatibility with the alkali-soluble resin described later herein can be improved. When the phosphate compound further includes a polyether function based on one molecule, the compatibility with the alkali-soluble resin and the solubility in the alkaline developer can be improved. When the phosphate compound further includes a phosphate function based on one molecule, the compound adsorbed on the surface of the quantum dot can serve as a protective layer, and the deagglomeration of the quantum dot can be removed.

Preferably, the phosphate compound according to the present invention may include a polyether functional group, a polyester functional group and a phosphate function based on one molecule. In this case, the agglomeration of quantum dots can be removed to reduce the size of the dispersed particles, and the compatibility with alkali-soluble resins and the solubility in alkaline developer can be improved. These are all conducive to the formation of patterns. Therefore, optimally, the phosphate compound includes a polyether functional group, a polyester functional group, and a phosphate functional group.

In the present invention, the "acid value" refers to the amount (mg) of potassium hydroxide required to neutralize 1 gram of the acrylic polymer, and may be related to the solubility of the self-luminous photosensitive resin composition described later herein. In consideration of the development speed of the self-luminous photosensitive resin composition containing the surface treatment agent, the acid value of the phosphate compound is preferably 10 mgKOH/g or more, and more preferably 10 mgKOH/g to 200 mgKOH/g. When the acid value is lower than the above range, it may be difficult to ensure a sufficient development speed. When the acid value Above the above range, the adhesion with the substrate may be weakened, thus making the pattern prone to short circuit. Furthermore, the storage stability of the entire composition may decrease, and the viscosity may increase. Therefore, it is preferable to satisfy the above range.

The content of the phosphate compound may be 1 to 300 parts by weight, preferably 3 to 250 parts by weight, and more preferably 5 to 200 parts by weight relative to the total solid content of the quantum dots being 100 parts by weight. When the content of the surface treatment agent is within the above range, it can have a good quantum dot decohesion effect, and the polarity of the quantum dot dispersion liquid of the present invention and the self-luminous photosensitive resin composition including the quantum dot dispersion liquid The precipitation phenomenon caused by the difference in polarity can be suppressed. Furthermore, in the step of preparing the color filter, the surface treatment agent serves as a protective layer, and thus the quantum dots can be protected.

When the content of the phosphate compound is lower than the above range, the decohesion effect of quantum dots may be reduced. When the content of the phosphate compound exceeds the above range, the developability of the self-luminous photosensitive resin composition including the quantum dot dispersion liquid may decrease. Therefore, it is preferable to satisfy the above range.

<Self-luminous photosensitive resin composition>

Another aspect of the present invention relates to a self-luminous photosensitive resin composition, which includes the foregoing quantum dot dispersion liquid, and further includes an alkali-soluble resin (alkali-soluble resin), a photopolymerizable compound (photopolymerizable compound) ), one or more of the group consisting of a photopolymerization initiator, an additional solvent and an additive.

In the self-luminous photosensitive resin composition according to the present invention, the content of the quantum dot dispersion liquid may be 3% by weight to 80% by weight relative to the total weight of the self-luminous photosensitive resin composition is 100% by weight The percentage may preferably be 5% to 70% by weight, and more preferably 10% to 60% by weight. When the content of the quantum dot dispersion liquid included in the self-luminous photosensitive resin composition of the present invention satisfies the above range, a color filter having good photoluminescence characteristics can be prepared. When the content of the quantum dot dispersion liquid is lower than the above range, the photoluminescence characteristics may be reduced. When the content of the quantum dot dispersion liquid exceeds the above range, the content of other components may be reduced, so that the generation of the pattern may not proceed smoothly, and the reliability (reliability) may decrease. Therefore, it is preferable to satisfy the above range.

The self-luminous photosensitive resin composition according to the present invention may further include an alkali-soluble resin.

The alkali-soluble resin makes the unexposed portion of the color filter prepared using the self-luminous photosensitive resin composition alkali-soluble, so that the unexposed portion can be removed. Furthermore, alkali-soluble resin can be used to maintain the exposed area. When the self-luminous photosensitive resin composition includes an alkali-soluble resin, quantum dots can be more uniformly dispersed in the composition. In addition, quantum dots can be protected during the manufacturing process, and therefore brightness can be maintained.

The alkali-soluble resin according to the present invention may be selected from alkali-soluble resins having an acid value of 50 mgKOH/g to 200 mgKOH/g. "Acid Value" means used to neutralize 1 The amount (mg) of potassium hydroxide required for a gram of acrylic polymer can be related to the solubility of the self-luminous photosensitive resin composition described later herein. When the acid value is lower than the above range, it may be difficult to ensure a sufficient development speed. When the acid value is higher than the above range, the adhesive force with the substrate may be weakened, thereby making the pattern prone to short circuit. Furthermore, the storage stability of the entire composition may decrease, and the viscosity may increase.

In addition, when an alkali-soluble resin is used for the color filter, the molecular weight and its molecular weight distribution (Mw/Mn) can be limited. Preferably, the weight average molecular weight is in the range of 3,000 to 30,000, more preferably in the range of 5,000 to 20,000, and the molecular weight distribution is in the range of 1.5 to 6.0, preferably in the range of 1.8 to 4.0 . An alkali-soluble resin can be directly polymerized within the above range, or an alkali-soluble resin that meets the above conditions can be purchased. When the weight average molecular weight and molecular weight distribution are within the above ranges, the surface hardness and resolution can be improved, and the film remaining film and the solubility of non-exposed areas in the developer can be improved.

The alkali-soluble resin may include a polymer selected from the group consisting of a polymer of an unsaturated monomer containing a carboxyl group, a copolymer of this polymer and another monomer having an unsaturated bond that can be copolymerized therewith, and a combination thereof .

The carboxyl group-containing unsaturated monomer may include unsaturated monocarboxylic acid, unsaturated dicarboxylic acid, unsaturated tricarboxylic acid and the like. Specific examples of the unsaturated monocarboxylic acid may include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, cinnamic acid, and the like. Examples of unsaturated dicarboxylic acids may include maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, and the like. Unsaturated dicarboxylic acids include maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid and the like. The unsaturated polyvalent carboxylic acid may be an anhydride, and specific specific examples thereof include maleic anhydride, itaconic anhydride, citraconic anhydride, and the like. Also, the unsaturated polyvalent carboxylic acid may be its mono(2-methacryloyloxyalkyl) ester, and specific specific examples thereof may include succinic acid mono(2-propenyl acetyl) Succinic acid mono(2-acryloyloxyethyl), succinic acid mono(2-methacryloyloxyethyl), phthalic acid mono(2-acryloyloxyethyl) (Ethoxy) (phthalic acid mono (2-acryloyloxyethyl)), phthalic acid mono (2-methacryloyloxyethyl) (phthalic acid mono (2-methacryloyloxyethyl)) and its analogs. The unsaturated polyvalent carboxylic acid may be a mono(meth)acrylate having a dicarboxyl polymer at each of its two ends, for example, may include ω-carboxy polycaprolactone monoacrylate (ω-carboxy polycaprolactone monoacrylate) ), ω-carboxy polycaprolactone monomethacrylate (ω-carboxy polycaprolactone monomethacrylate) and the like. These carboxyl group-containing monomers can be used alone or in combination of two or more.

In addition, monomers that can be copolymerized with carboxyl-containing unsaturated monomers include those selected from aromatic vinyl compounds, unsaturated carboxyl ester compounds, unsaturated carboxyl urethane compounds, unsaturated carboxyl glycidyl ester compounds, and carboxylic acid vinyl esters Compounds, unsaturated ether compounds, acrylonitrile compounds, unsaturated amide compounds, fats Group conjugated diene compounds, macromonomers having mono-acryloyl or monomethacryloyl groups at the ends of polymer molecular chains, macromonomers, and any combination of the above.

More specifically, the monomer that can be copolymerized with the unsaturated monomer may include aromatic vinyl compounds, such as styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene (m- vinyltoluene), p-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methyl P-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p-vinylbenzyl methyl ether (p-vinylbenzyl methyl ether), o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether -vinylbenzyl glycidyl ether) and indene; unsaturated carboxyl esters, such as methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate (ethyl methacrylate), n-propylacrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl acrylate (i-propyl methacrylate) propyl methacrylate), n-butyl acrylate, n-butyl methacrylate, i-butyl acrylate, isobutyl methacrylate (i- butyl methacrylate), sec-butyl acrylate (sec-butyl acrylate), sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxyethyl acrylate (2 -hydroxyethyl acrylate), 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 2-hydroxypropyl methacrylate, 3 -3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate Ester (2-hydroxybutyl methacrylate), 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate , 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl acrylate (benzyl acrylate) benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl Acrylate (2-methoxyethyl acrylate), 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl acrylate (2-phenoxyethyl acrylate) 2-phenoxyethyl methacrylate), methoxydiethylene glycol acrylate, methacrylic acid Methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol methacrylate, methoxytriethylene glycol methacrylate, methoxy Propylene glycol acrylate (methoxypropylene glycol acrylate), methoxypropylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate, methoxydipropylene glycol methacrylate, Isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl acrylate, dicyclopentadiethyl methacrylate, adamantyl (meth) acrylate, norbornyl (meth) Norbornyl(meth)acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate , Glycerol monoacrylate and glycerol monomethacrylate; unsaturated carboxylic acid aminoalkylesters, such as 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-Dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl methacrylate, 2-aminopropyl methacrylate , 2-dimethylaminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate methacrylate), 3-dimethylaminopropyl acrylate, a 3-dimethyl aminopropyl methacrylate; unsaturated carboxylic acid glycidylesters, such as glycidyl acrylate and glycidyl methacrylate; carboxylic acid vinyl ester (carboxylic acid vinylesters), such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether and Acryloyl glycidyl ether; cyanide vinyl compound, such as acrylonitrile, methacrylonitrile, α-chloro acrylonitrile, and dicyanoethylene; unsaturated Acrylamides, such as acrylamides, methacrylamides, α-chloroacrylamides, N-2-hydroxyethylacrylamides, and N-2-hydroxyethylmethacrylamides; unsaturated amides Amines, such as maleimide, benzylmaleimide, N-phenylmaleimide, and N-cyclohexylmaleimide; aliphatic conjugated dienes, such as 1,3-butane Diene, isoprene and chloroprene; macromonomers with mono-acryloyl or mono-methacryloyl groups at the end of the polymer molecular chain, including polystyrene, polymethacrylate, poly Methyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, and polysiloxane; and bulk monomers, such as those with a reduced camphor skeleton that can reduce the relative dielectric constant A monomer, a monomer having a adamantyl skeleton, and a monomer having a rosin skeleton.

The total solid content of the self-luminous photosensitive resin composition is 100% by weight, and the content of the alkali-soluble resin may be 5% to 80% by weight, especially 10% to 70% by weight, more particularly 15% Up to 60% by weight ratio. When the content of the alkali-soluble resin is within the above range, it has sufficient solubility in the developing solution, so that it is easier to form a pattern. In addition, it is possible to avoid the shrinkage of the film layer of the pixel portion in the exposed area that may occur during development, so that the degree of defect of the non-pixel portion can be reduced. When the content of the alkali-soluble resin is lower than the above range, the non-pixel portion may be somewhat lost. When the content of the alkali-soluble resin exceeds the above range, the solubility in the developing solution will be somewhat reduced, which may make it difficult to generate patterns.

The self-luminous photosensitive resin composition of the present invention may further include a photopolymerizable compound. The photopolymerizable compound is a compound that can be polymerized by the action of light and a photopolymerization initiator described below. Examples of photopolymerizable compounds include monofunctional monomers, bifunctional monomers, other multifunctional monomers, and the like.

The type of monofunctional monomer is not limited, and examples thereof may include nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate acrylate), 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, N-vinylpyrrolidone and the like.

The type of bifunctional monomer is not limited, and examples thereof may include 1,6-hexanediol di(meth)acrylate, ethylene glycol dimethacrylate, new Pentadiol dimethacrylate, triethylene glycol dimethacrylate, bis(acryloxyethyl) ether of bisphenol A (bis(acryloyloxyethyl)ether), 3-methylpentandiol di(meth)acrylate and the like.

The type of multifunctional monomer is not limited, and examples thereof may include trimethylolpropanetri(meth)acrylate, ethoxylated trimethylolpropanetri(ethoxylated trimethylolpropanetri( meth)acrylate, propoxylated trimethylolpropanetri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol trimethacrylate tetra(meth)acrylate), dipentaerythritol tri(meth)acrylate, dipentaerythritol penta(meth)acrylate, ethoxy polydipentaerythritol hexamethyl Acrylate (ethoxylated dipentaerythritol hexa(meth)acrylate), propoxylated dipentaerythritol hexa(meth)acrylate, dipentaerythritol hexa(meth)acrylate and their analog. Among the above examples, polyfunctional monomers having two or more functional groups are preferred.

The content of the photopolymerizable compound may be 5% to 70% by weight, especially 10% to 60% by weight, more particularly 15% relative to the total solid content of the self-luminous photosensitive resin composition being 100% by weight % To 50% by weight. When the content of the photopolymerizable compound is within the above range, the pixel portion is strongly The degree or smoothness of the surface can be increased. When the content of the photopolymerizable compound is lower than the above range, the intensity of the pixel portion may decrease. When the content of the photopolymerizable compound exceeds the above range, the smoothness of the surface of the pixel portion may decrease. Therefore, it is preferable to satisfy the above range.

The self-luminous photosensitive resin composition according to the present invention may further include a photopolymerization initiator. The type of photopolymerization initiator is not particularly limited as long as it can polymerize the photopolymerizable compound.

In particular, considering polymerization characteristics, initiation efficiency, absorption wavelength, availability, price, and other similar factors, preferably selected from the group consisting of acetophenone-based compounds and benzophenone -based compounds, triazine-based compounds, biimidazole-based compounds, oxime-based compounds and thioxanthone-based compounds More than one.

Examples of acetophenone compounds may include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropane-1-one (2-hydroxy-2-methyl-1-phenylpropan -1-one), benzyl dimethyl ketal, 2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropane-1-one (2-hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one), 1-hydroxycyclohexylphenylketone, 2-methyl -1-(4-methylthiophenyl)-2-morpholinopropane-1-one (2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one), 2-benzyl 2-Dimethylamino-1-(4-morpholinylphenyl)butane-1-one (2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one), 2 -Hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propane-1-one(2-hydroxy-2-methyl[4-(1-methylvinyl)phenyl]propan-1 -one), 2-(4-methylbenzyl)-2-(dimethylamino)-1-(4-morpholinylphenyl)butane-1-one (2-(4-methylbenzyl)- 2-(dimethylamino)-1-(4-morpholinophenyl)butan-1-one) and its analogs.

Examples of benzophenone compounds may include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzophenone 4-Benzyl-4'-methyldiphenylsulfide, 3,3',4,4'-tetra(tert-butylperoxycarbonyl)benzophenone (3,3' ,4,4'-tetra(tert-butylperoxycarbonyl)benzophenone), 2,4,6-trimethylbenzophenone (2,4,6-trimethylbenzophenone) and their analogues.

Examples of triazine compounds may include 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis(trichloro Methyl)-6-(4-methoxynaphthyl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-piperonyl-1,3,5- Triazine (2,4-bis(trichloromethyl)-6-piperonyl-1,3,5-triazine), 2,4-bis(trichloromethyl)-6-(4-methoxystyryl) -1,3,5-triazine (2,4-bis(trichloromethyl)-6-(4-methoxystyryl)-1,3,5-triazine), 2,4-bis(trichloromethyl)-6-[2-(5-methylfuran-2-yl)vinyl]-1,3,5-triazine (2,4-bis(trichloromethyl) -6-[2-(5-methylfuran-2-yl)ethenyl]-1,3,5-triazine), 2,4-bis(trichloromethyl)-6-[2-(furan-2- Group) vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(4-diethylamino-2-methylphenyl) vinyl ]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(3,4-dimethoxyphenyl)vinyl]-1,3,5 -Triazine and the like.

Examples of the bisimidazole compound may include 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbisimidazole, 2,2'-bis(2,3-dichloro Phenyl)-4,4',5,5'-tetraphenylbisimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetra(alkoxybenzene Group) bisimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetra(trialkoxyphenyl) non-imidazole, 2,2'-bis(2, 6-dichlorophenyl)-4,4',5,5'-tetraphenyl-1,2'-bisimidazole, 4,4',5,5' position of phenyl substituted with alkoxycarbonyl Imidazole compounds and their analogs. Among the above, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbisimidazole, 2,2'-bis(2,3-dichlorophenyl) -4,4',5,5'-tetraphenylbisimidazole and 2,2'-bis(2,6-dichlorophenyl)-4,4',5,5'-tetraphenyl-1, The 2'-bisimidazole system is preferred.

Examples of oxime compounds may include o-ethoxycarbonyl-α-oximyl-1-phenylpropane-1-one (o-ethoxycarbonyl-α-oxyimino-1-phenylpropan-1-one) and the like, and its The commercial products are Irgacure OXE 01 and OXE 02 manufactured by BASF.

Examples of thioxanthone compounds may include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone (2,4-dichlorothioxanthone), 1-chloro-4-propoxythioxanthone and its analogs.

The content of the photopolymerization initiator may be 0.1% to 20% by weight, preferably 0.5% to 15% by weight, and more preferably 100% by weight relative to the total solid content of the self-luminous photosensitive resin composition. 1% to 10% by weight. When the content of the photopolymerization initiator is within the above range, the self-luminous photosensitive resin composition has high sensitivity and the exposure time can be shortened, so productivity can be improved, and high resolution can be maintained. In addition, the strength of the pixel portion formed using the self-luminous photosensitive resin composition of the present invention and the smoothness of its surface can be improved.

In order to improve the sensitivity of the self-luminous photosensitive resin composition of the present invention, the photopolymerization initiator may further include a photopolymerization initiator adjuvant. When the photopolymerization initiating adjuvant is used, the photosensitivity can be further improved, and thus the productivity can also be improved.

Examples of the photopolymerization initiating adjuvant may include one or more selected from the group consisting of amine compounds, carboxylic acid compounds, and sulfur functional group-containing organic sulfur compounds, but the present invention is not limited thereto.

The amine compound is preferably an aromatic amine compound. Specific specific examples of the amine compound may include an aliphatic amine compound and an aromatic amine compound, such as triethanolamine, methyldiethanolamine, and triisopropanolamine, and an aromatic amine compound such as 4-dimethylamino Methyl benzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, benzoic acid-2- Dimethylaminoethyl, N,N-dimethyl-p-toluidine, 4,4'-bis(dimethylamino)benzophenone (commonly known as Michler's ketone), 4,4'-bis( Diethylamino) benzophenone and its analogs.

The carboxylic acid compound preferably uses aromatic heteroacetic acid. Specific examples of the carboxylic acid compound may include phenylthioacetic acid, methylphenylthioacetic acid, ethylbenzenethioacetic acid, methylethylbenzenethioacetic acid, dimethylphenylthioacetic acid, methoxy Phenylthioacetic acid, dimethoxyphenylthioacetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N -Naphthylglycine, naphthoxyacetic acid and the like.

Specific examples of the organic sulfur compound containing a sulfur functional group may include 2-mercaptobenzothiazole, 1,4-bis(3-mercaptobutyryloxy)butane (1,4-bis(3-mercaptobutyryloxy)butane) , 1,3,5-tris(3-mercaptobutylethoxy)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione (1,3,5- tris(3-mercaptobutyloxyethyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione), trimethylolpropane tris(3-propionate mercapto) (trimethylolpropane tris(3 -mercaptopropionate)), pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate)), tetraethylene glycol bis (3-mercaptopropionate) and the like.

The photopolymerization initiating adjuvant can be appropriately added and used in an amount that does not hinder the protection scope of the present invention.

The additional solvent that the self-luminous photosensitive resin composition of the present invention may further include is not particularly limited, and organic solvents generally used in the technical field can be used as the additional solvent. The additional solvent may be the same as or different from the solvent contained in the quantum dot dispersion liquid of the present invention.

Specific examples of the additional solvent may include alkylene glycol alkyl ethers, such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, propylene glycol Monomethyl ether and propylene glycol methyl ethyl ether; diethylene glycol dialkyl ethers, such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol Ethylene glycol dibutyl ether; alkylene glycol alkyl ether acetate, such as methyl cellosolve acetate, ethoxy ethyl acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate Ester and propylene glycol monopropyl ether acetate; aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene; ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and Cyclohexanone; alcohols, such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, and glycerin; esters, such as ethyl 3-ethoxypropionate and 3-methoxypropion Methyl acid ester; cyclic ester, for example γ-butyrolactone.

Among the above solvents, considering the applicability and drying characteristics, it is preferable to use an organic solvent having a boiling point of 100°C to 200°C as an additional solvent. Preferred examples of the additional solvent include alkylene glycol alkyl ether acetate, ketone, and esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate. Preferred examples of the additional solvent include propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, and ethyl 3-ethoxypropionate Ester, methyl 3-methoxypropionate cyclohexanone and the like. These additional solvents may be used alone or in combination of two or more.

The total content of the solvent (the solvent in the quantum dot dispersion plus additional solvent) may be 20% to 90% by weight, preferably 25% relative to the total weight of the self-luminous photosensitive resin composition is 100% by weight % To 85% by weight, more preferably 30% to 80% by weight. When the total content of the solvent is within the above range, a roll coater, a spin coater, a slit and spin coater, a slit coater (often called a blade coater), an inkjet printer are used And similar equipment can be improved. When the total content of the solvent is lower than the above range, the applicability will be reduced, and the manufacturing process will be more difficult. When the total content of the solvent exceeds the above range, the performance of the color filter manufactured using the self-luminous photosensitive resin composition will be degraded.

The self-luminous photosensitive resin composition according to the present invention may further include, for example, an adhesion promoter and a surfactant to improve coating characteristics or adhesion.

An adhesion promoter can be used to improve adhesion to the substrate. The adhesion promoter may include a silane coupling agent having a reactivity selected from the group consisting of a carboxyl functional group, a methacryl amide functional group, an isocyanate functional group, an epoxy functional group and combinations thereof Substituents, but the invention is not limited thereto. For example, the silane coupling agent may include trimethoxysilyl benzoic acid (trimethoxysilyl benzoic acid), γ-methacryl oxypropyl trimethoxy silane (gamma-methacryl oxypropyl trimethoxy silane), vinyl triethyl acetoxy Vinyl triacetoxysilane, vinyl trimethoxysilane, γ-isocyanate propyl triethoxy Silane, γ-glycidoxypropyl trimethoxysilane (γ-glycidoxy propyl trimethoxysilane), β-(3,4-epoxycyclohexyl) ethyl trimethoxysilane and the like. The above can be used alone or in combination of two or more.

When the self-luminous photosensitive resin composition according to the present invention includes a surfactant, the coating characteristics can be improved. For example, for example BM-1000, BM-1100 (BM CHEMIE Co.), Fluorad FC-135/FC-170C/FC-430 (SUMITOMO 3M Co.), SH-28PA/-190/SZ-6032 (DORE The fluorinated surfactant of SILICONE Co. and its analogs can be used as the surfactant, but the present invention is not limited thereto.

Furthermore, the self-luminous photosensitive resin composition according to the present invention may further include additives that do not hinder the efficacy of the present invention, such as antioxidants, ultraviolet (UV) absorbers, or anti-agglomerating agents. Those skilled in the art can add and use additives that do not hinder the efficacy of the present invention. For example, the content of the additive may be 0.05 to 10 parts by weight, specifically 0.1 to 10 parts by weight, and more specifically 0.1 to 5 parts by weight relative to the total weight of the self-luminous photosensitive resin composition is 100 parts by weight Parts, but the invention is not limited to this.

<color filter>

According to another aspect of the present invention, a color filter manufactured using the aforementioned self-luminous photosensitive resin composition is proposed.

Since the color filter according to the present invention contains a cured product of a self-luminous photosensitive resin composition, which contains the quantum dot dispersion liquid of the present invention, the particles of the quantum dot can be uniformly dispersed, and can have good photoluminescence characteristics .

The color filter may include a substrate and a pattern layer, and the pattern layer is formed on the substrate.

The substrate may be the color filter itself, or may be a part for disposing the color filter on the display device or the like, but the invention is not limited thereto. For example, the substrate may include glass, silicon (Si), silicon oxide (SiO _x) or a polymer substrate and the polymer substrate may include polyether sulfone (PES), polycarbonate (PC) or the like.

The pattern layer may be a film layer including the self-luminous photosensitive resin composition of the present invention, and may be formed by exposing, developing, and thermally curing the self-luminous photosensitive resin in a predetermined pattern. The pattern layer can be produced by a method known in the art.

The color filter includes a substrate and a pattern layer as described above, and may further include a barrier layer formed between respective patterns, and may further include a black matrix, but the present invention is not limited thereto.

In addition, the color filter may further include a protective film formed on the pattern layer.

The color filter may include at least one component selected from the group consisting of a red pattern layer, a green pattern layer, and a blue pattern layer. Specifically, the color filter may include at least one component selected from the group consisting of red according to the present invention A group consisting of a red pattern layer of quantum dots, a green pattern layer including green quantum dots according to the present invention, and a blue pattern layer containing blue quantum dots according to the present invention. When irradiated with light, the red pattern layer, the green pattern layer, and the blue pattern layer may emit red light, green light, and blue light, respectively. In this case, the type of light source is not particularly limited, but it is preferable to use a light source that emits blue light to achieve better color reproducibility.

The color filter may include only two color types among the red pattern layer, the green pattern layer, and the blue pattern layer, but the present invention is not limited thereto. However, in the case where the color filter includes only two color pattern layers, the color filter may further include a transparent pattern layer that does not include quantum dots.

In the case where the color filter includes only two color pattern layers, a light source that emits light at a wavelength corresponding to the remaining colors may be used. For example, when the color filter includes a red pattern layer and a green pattern layer, a light source that emits blue light may be used, and in this case, the red quantum dot emits red light, the green quantum dot emits green light, and blue light appears through the transparent pattern layer blue.

<Image display device>

Another aspect of the invention relates to an image display device including the aforementioned color filter.

The color filter of the present invention can be applied not only to general liquid crystal display devices, but also to various image display devices, such as electroluminescence display devices, plasma display devices, and field emission display devices.

Since the image display device of the present invention includes a color filter, which is prepared using a cured product of a self-luminous photosensitive resin composition including the quantum dot dispersion liquid of the present invention, it has good photoluminescence characteristics.

The image display device may further include a light source emitting blue light and a transparent pattern layer, and the light source and transparent pattern layer of blue light may be applied as described above.

Hereinafter, the present invention will be described in more detail through various embodiments. However, the present invention can be implemented in many different forms without being limited by the contents of the following embodiments. The following examples are presented only to more completely explain the present invention to those skilled in the art. In addition, the terms "% by weight" and "parts by weight" described below are used to express the weight content unless otherwise stated.

Preparation Example 1~2

Preparation Example 1: Preparation of quantum dot dispersion liquid

The quantum dot dispersion liquid is prepared using the components (quantum dots and solvent) and contents shown in the following Table 1 and the Hansen solubility parameters of each preparation example (Preparation Examples 1-1 to 1-11) are also as Table 1 shows.

Preparation Example 2: Preparation of alkali-soluble resin

A stirrer, thermometer, reflux tube, separating funnel and nitrogen introduction tube are provided in a reaction bottle. 45 parts by weight of N-benzylmaleimide, 45 parts by weight of methacrylic acid, 10 parts by weight of tricyclodecyl methacrylate, 4 parts by weight of tert-butyl-2-ethyl peroxide Hexanoic acid ester (t-butylperoxy-2-ethylhexanoate) and 40 parts by weight of propylene glycol monomethyl ether acetate (hereinafter abbreviated as PGMEA) are added to the reaction bottle and mixed, thereby preparing monomer drops. 6 parts by weight of n-dodecyl mercaptan and 24 parts by weight of PGMEA were added and stirred and mixed, thereby preparing a chain transfer agent dripping liquid.

Subsequently, after introducing 395 parts by weight of PGMEA into the reaction bottle and replacing the air in the reaction bottle with nitrogen, the temperature of the reaction bottle was increased to 90°C while Stir. Next, the monomer dripping liquid and the chain transfer agent dripping liquid were added dropwise by a separatory funnel. Under the condition of maintaining 90°C, the steps of dropwise dropping were carried out respectively for 2 hours. After 1 hour, after raising the temperature to 110°C and maintaining for 3 hours, the gas introduction tube was introduced, and bubbling of a mixed gas of oxygen/nitrogen = 5/95 (v/v) was started.

Next, 10 parts by weight of glycidyl methacrylate, 0.4 parts by weight of 2,2'-methylenebis (4-methyl-6-tert-butylphenol), and 0.8 parts by weight of triethylamine are added In the reaction bottle, and continue the reaction for 8 hours at 110 ℃. Thereafter, the reaction was cooled to room temperature to obtain an alkali-soluble resin having a solid content of 29.1% by weight, a weight average molecular weight of 32,000, and an acid value of 114 mgKOH/g.

Preparation Example 3: Preparation of color filters

The color filter is manufactured using the self-luminous photosensitive resin composition prepared according to Examples 1 to 7 and Comparative Examples 1 to 4 described below. Specifically, each self-luminous photosensitive resin composition was applied on a glass substrate using a spin coating method, placed on a hot plate, and maintained at a temperature of 100° C. for 3 minutes to form a thin film. Next, place a test mask with a square penetration pattern of 20 mm × 20 mm (width × length) and a line/space pattern of 1 μm to 100 μm on the film, set the film 100 μm apart from the test mask, and then irradiate Ultraviolet rays.

At this time, the ultra-high pressure mercury lamp (product name: USH-250D) manufactured by USHIO DENKI was used as the UV light source, and the film was irradiated with an exposure intensity of 200 mJ/cm ² (365 nm) in an air atmosphere, and no special optical filter was used. Device. The film irradiated with ultraviolet light was immersed in a KOH aqueous solution having a pH of 10.5 for 80 seconds, and then developed. After the glass substrate coated with the thin film was washed with distilled water, it was blown with nitrogen gas for drying, and heated in a heating box at 150° C. for 10 minutes, thereby manufacturing a color filter pattern. The film thickness of the self-luminous color filter pattern produced above was 3 μm.

Examples 1 to 7 and Comparative Examples 1 to 4

The self-luminous photosensitive resin composition was prepared using the components and contents shown in Table 2 below.

Experimental example

Experimental Example 1: Measuring the size of dispersed particles of a sub-dot dispersion liquid and a self-luminous photosensitive resin composition

The size of the dispersed particles was measured using ELSZ-2000ZS (OTSUKA CO.), and the results are shown in Table 3 below. The degree of quantum dot particle cohesion is proportional to the size of dispersed particles.

Experimental Example 2: Measuring luminous intensity

In the color filter prepared in Preparation Example 3, the luminous intensity of a region of 550 nm was measured using a spectrometer (manufactured by OCEAN OPTICS Co.), and the measurement results are shown in Table 3 below. The result of the evaluation is that the luminous intensity and self-luminous performance of the color filter are proportional.

Referring to Table 3, compared to color filters (Comparative Examples 1 to 3) prepared with a quantum dot dispersion liquid without the present invention and a self-luminous photosensitive resin composition including the same, the quantum The color filter (Examples 1 to 7) prepared by the dot dispersion liquid and the self-luminous photosensitive resin composition including it exhibits a smaller size of dispersed particles. In addition, compared to the color filter (Comparative Examples 1 to 3) that does not include the cured product of the self-luminous photosensitive resin composition of the present invention, the cured product including the cured product of the self-luminous photosensitive resin composition of the present invention The color filters (Examples 1 to 7) have good luminous intensity.

In particular, a color filter prepared with the quantum dot dispersion liquid of the present invention and a self-luminous photosensitive resin composition (Examples 1 to 7) and a color filter prepared with a conventional solvent such as chloroform (Comparative Example 4) Has a similar effect. Ran However, the color filter of the present invention (Examples 1 to 7) does not include any harmful components (such as chloroform or the like).

The quantum dot dispersion liquid of the present invention has good dispersibility and does not include components harmful to the human body. The self-luminous photosensitive resin composition containing this quantum dot dispersion liquid also has the above-mentioned advantages.

In addition, the color filter prepared using the self-luminous photosensitive resin composition of the present invention and the image display device including the color filter have good photoluminescence characteristics.

Claims (10)

A quantum dot dispersion liquid, including a plurality of quantum dots and a solvent, wherein the total weight of the quantum dot dispersion liquid is 100% by weight, including 5% to 70% by weight of the quantum dots, wherein the solvent satisfies The Hansen solubility parameter represented by formula 1 below, and the solvent does not include halogenated hydrocarbon solvents, aromatic hydrocarbon solvents and aliphatic hydrocarbon solvents: [Formula 1] δ _d

14, 2

δ _p

6, 2

δ _h

8. In Formula 1, δ _d represents a dispersion component, δ _p represents a polar component, and δ _h represents a hydrogen bonding component. The quantum dot dispersion liquid as described in item 1 of the patent application range, wherein the solvent includes one or more selected from the group consisting of esters and C6~C10 ethers. The quantum dot dispersion liquid as described in item 2 of the patent application scope, wherein the solvent includes a solvent selected from the group consisting of tert-butyl acetate, sec-butyl acetate, and isobutyl acetate ), acetic acid N-butyl acetate, 2-methyl butyl acetate, 2-pentyl acetate, neopentyl acetate, acetate- 3-methylbutan-2-yl acetate, isoamyl acetate, n-pentyl acetate, tert-amyl acetate , 3-pentyl acetate, 2-hexyl acetate, 3-methylpentyl acetate, 3-hexyl acetate (3 -hexyl acetate), 2,3-dimethyl-2-butyl acetate, 2-ethylbutyl acetate, acetic acid-2 ,3-dimethylbutyl acetate,3-methyl-1-pentyl acetate,-3,3-dimethylbutyl acetate (3,3-dimethylbutyl acetate), n-hexyl acetate, 4-methyl-1-pentyl acetate, 2-methyl-3-pentyl acetate Ester (2-methyl-3-pentyl acetate), 4-methyl-2-pentyl acetate (4-methyl-2-pentyl acetate), 2-methyl-2-pentyl acetate (2-methylpentan- 2-yl acetate), 1-methylhexyl acetate, 1-heptyl acetate, 1,1,2,2-tetramethylpropyl acetate (1 ,1,2,2-tetramethylpropyl acetate), 5-methylhexyl acetate, ethyl isoamyl acetate, 4-heptyl acetate , 5-methyl-2-nyl acetate (5-methylhexan-2-yl acetate), 2,4-dimethyl-2-pentyl acetate (2,4-dimethyl-2-pentyl acetate) ,2- 2-methyl-2-hexyl acetate, 4,4-dimethylpentyl acetate, 4-methyl-3-hexyl acetate ( 4-methyl-3-hexyl acetate), 2-octyl acetate, 1-ethylhexyl acetate, 1-octyl acetate, 2-ethylhexyl acetate, 1,1,3,3-tetramethylbutyl acetate, 2,2,4-trimethyl 2,2-,4-trimethylpentyl acetate, 2,2-dimethylhexyl acetate, 1-isopropyl-1,2-dimethylpropyl 1-isopropyl-1,2-dimethylpropyl acetate, 4-ethyl-3-hexyl acetate, dipropylene glycol dimethyl ether, and dipropylene glycol More than one of the group consisting of dipropylene glycol methyl ether acetate. The quantum dot dispersion liquid as described in item 1 of the patent application scope, wherein the quantum dots further include a plurality of organic ligands, and the organic ligands include alkyl carboxylic acid selected from C5~C20, C5~C20 At least one of the group consisting of alkenyl carboxylic acid, C5-C20 alkynyl carboxylic acid, phosphine, phosphine monoxide and monothiol group. The quantum dot dispersion liquid as described in item 1 of the patent application scope, wherein the quantum dot dispersion liquid further includes a monophosphate compound. The quantum dot dispersion liquid as described in item 1 of the scope of the patent application, wherein the total weight of the quantum dot dispersion liquid is 100% by weight, including 5% to 95% by weight of the solvent. A self-luminous photosensitive resin composition, including the quantum dot dispersion liquid as described in any one of claims 1 to 6, and the self-luminous photosensitive resin composition further includes More than one of the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, an additional solvent and an additive. The self-luminous photosensitive resin composition as described in item 7 of the patent application range, wherein the total weight of the self-luminous photosensitive resin composition is 100% by weight, including 3% to 80% by weight of the Quantum dot dispersion. A color filter includes a cured product of a self-luminous photosensitive resin composition as described in item 7 of the patent application. An image display device includes the color filter as described in item 9 of the patent application scope.