KR20180043527A - Quantum dot dispersion, self emission type photosensitive resin composition comprising the same, color filter and image display device produced using the same - Google Patents

Abstract

A quantum dot dispersion according to the present invention includes a quantum dot, and a first solvent having a dielectric constant less than 12.0 at 20°C, wherein the solvent does not include a halogenated hydrocarbon solvent, an aromatic hydrocarbon solvent, and an aliphatic saturated hydrocarbon solvent. The quantum dot dispersion does not include solvents that are harmful to human bodies, and has excellent dispersibility and light emission properties.

Description

TECHNICAL FIELD [0001] The present invention relates to a quantum dot dispersion, a self-emitting photosensitive resin composition containing the same, a color filter manufactured using the same, and a color filter and an image display device using the same. BACKGROUND ART [0002]

The present invention relates to a quantum dot dispersion containing a solvent having a specific dielectric constant value, a self-emitting photosensitive resin composition containing the same, a color filter manufactured using the same, and an image display device.

A color filter is a thin film type optical component that extracts three colors of red, green, and blue in white light and makes it possible in fine pixel units. The size of one pixel is several tens to several hundreds of micrometers. Such a color filter has a black matrix layer formed in a predetermined pattern on a transparent substrate so as to shield a boundary portion between each pixel and a plurality of colors (typically red (R), green (G) and Blue (B)) are arranged in a predetermined order in this order.

In recent years, as a method of implementing a color filter, a pigment dispersion method using a pigment dispersion type photosensitive resin has been applied. However, in a process in which light emitted from a light source passes through a color filter, a part of light is absorbed by a color filter, The efficiency is lowered and the color reproduction is deteriorated due to the characteristics of the pigment contained in the color filter.

Particularly, since color filters are used in various fields including various image display devices, they are required not only to have excellent pattern characteristics but also to have high color reproducibility and excellent performance such as high luminance and high contrast ratio. In order to solve such problems, A method of manufacturing a color filter using the self-luminescent photosensitive resin composition has been proposed.

The quantum dots contained in the self-luminescent photosensitive resin composition are generally purchased and used in the form of commercially available quantum dots. These quantum dots are sold in the form of dispersed in a nonpolar solvent which is harmful to human bodies such as chloroform, toluene, n-hexane or benzene. The solvents described above are volatile organic compounds or carcinogenic or neurotoxic and have a high risk of abnormal reproductive function and require strict management of the operator's handling environment.

Korean Patent Laid-Open Publication No. 2015-0034013 discloses a quantum dot-resin nanocomposite and a manufacturing method thereof, and discloses a quantum dot-resin nanocomposite in which a curable resin and a large number of quantum dots are present in the form of nanoparticles.

Korean Patent Laid-Open Publication No. 2016-0069393 relates to a method for manufacturing a photo-conversion composite, a photo-conversion composite, a photo-conversion film comprising the same, a backlight unit, and a display device. And a quantum dot-polymer bead dispersed in the matrix resin, wherein the light-conversion composite has a scattering intensity according to a wave number measured by Small Angle X-ray Scattering discloses details about ¹ to 0.045Å ^-1 of photoconversion composite ^- intensity) is a wave number (wave number) q of the peak point (peak point) of the graph 0.0056Å.

There is a problem that a solvent harmful to the human body is used as a solvent in the above documents, or the patterning can not be performed because the dispersion property is not excellent, so that it can not be applied to a color filter.

Therefore, development of a quantum dot dispersion and a self-luminescent photosensitive resin composition which are excellent in dispersibility and capable of realizing excellent luminescence characteristics without containing a harmful component to the human body have been demanded.

Korean Patent Publication No. 2015-0034013 (Feb. Korea Patent Publication No. 2016-0069393 (June 16, 2016)

Disclosed is a quantum dot dispersion containing no solvent harmful to human body, and a self-luminescent photosensitive resin composition containing the same.

The present invention also provides a quantum dot dispersion excellent in dispersibility and excellent in light emission characteristics, and a self-luminescent photosensitive resin composition containing the same.

Further, the present invention is intended to provide a color filter and an image display device which are excellent in luminescence characteristics and are manufactured using the above-described quantum dot dispersion and self-luminescent photosensitive resin composition.

According to an aspect of the present invention, there is provided a quantum dot dispersion body comprising: a quantum dot; And a first solvent having a dielectric constant of less than 12.0 at 20 캜, provided that the solvent is a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic saturated hydrocarbon solvent.

The present invention also relates to the above-mentioned quantum dot dispersion material; And photopolymerizable compounds; Alkali-soluble resins; A photopolymerization initiator; And at least one selected from the group consisting of a first solvent and a second solvent.

The present invention also provides a color filter comprising a cured product of the above-mentioned self-luminescent photosensitive resin composition.

Further, the present invention provides an image display device including the color filter described above.

The quantum dot dispersion according to the present invention and the self-luminescent photosensitive resin composition containing the same have the advantage of being excellent in dispersibility and capable of realizing excellent luminescent characteristics because they contain a solvent having a specific dielectric constant, There is an advantage.

Further, the color filter and the image display device made of the self-luminescent photosensitive resin composition according to the present invention have an advantage of excellent luminescence characteristics.

Hereinafter, the present invention will be described in more detail.

When a member is referred to as being " on "another member in the present invention, this includes not only when a member is in contact with another member but also when another member exists between the two members.

Whenever a part is referred to as "including " an element in the present invention, it is to be understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

< Qdot Dispersant >

One aspect of the invention relates to a quantum dot dispersion. Specifically, one aspect of the present invention relates to a quantum dot device comprising: a quantum dot; And a first solvent having a dielectric constant of less than 12.0 at 20 캜, provided that the solvent is a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic saturated hydrocarbon solvent.

The quantum dot dispersion according to the present invention includes quantum dots. The quantum dot may be referred to as a nano-sized semiconductor material. The atoms form molecules, and the molecules form aggregates of small molecules called clusters to form nanoparticles. When these nanoparticles are semiconductor, they are called quantum dots. The quantum dots emit energy according to the corresponding energy band gap of the quantum dots when the quantum dots reach the excited state from the outside.

The color filter made of the self-luminescent photosensitive resin composition according to the present invention can emit light (luminescence) by light irradiation by including the quantum dot.

In a typical image display device including a color filter, white light is transmitted through the color filter to realize color. In this process, a part of light is absorbed by the color filter, so that the light efficiency is lowered. However, in the case of including the color filter made of the self-luminescent photosensitive resin composition according to the present invention, since the color filter is self-luminescent by the light of the light source, more excellent light efficiency can be realized, The color reproducibility is better and light is emitted in all directions due to the optical luminescence, so that there is an advantage that the viewing angle can also be improved.

And is not particularly limited as long as it is a quantum dot particle capable of emitting light by stimulation by light. For example, II-VI group semiconductor compounds; III-V semiconductor compound; Group IV-VI semiconductor compounds; Group IV elements or compounds containing them; And combinations thereof, and they may be used singly or in combination of two or more.

Specifically, the II-VI group semiconductor compound is selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; Trivalent compounds selected from the group consisting of CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe and mixtures thereof; And a silane compound selected from the group consisting of CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe and mixtures thereof.

The III-V semiconductor compound is selected from the group consisting of GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb and mixtures thereof. A trivalent compound selected from the group consisting of GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP and mixtures thereof; And a photonic compound selected from the group consisting of GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, InAlNSb, InAlPAs, InAlPSb and mixtures thereof.

The IV-VI group semiconductor compound is selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A triple compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And a silane compound selected from the group consisting of SnPbSSe, SnPbSeTe, SnPbSTe, and mixtures thereof. However, the present invention is not limited thereto.

Although not limited thereto, the Group IV element or the compound containing it may be an elemental compound selected from the group consisting of Si, Ge, and mixtures thereof; And these elemental compounds selected from the group consisting of SiC, SiGe, and mixtures thereof.

The quantum dot has a single homogeneous structure; A dual structure such as a core-shell, gradient structure or the like; Or a mixed structure thereof.

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

The quantum dot may have a part of its surface substituted with an organic ligand, but is not limited thereto. The organic ligand is preferably bonded to the surface of the quantum dot to stabilize the quantum dot. The organic ligands include, but are not limited to, C5 to C20 alkylcarboxylic acids, alkenylcarboxylic acids or alkynylcarboxylic acids; Pyridine; Mercapto alcohol; Thiol; Phosphine; Phosphine oxide; Primary amines; Secondary amines; And the like.

The method of substituting a part of the surface of the quantum dot with an organic ligand is not limited in the present invention, and conventional methods performed in the art can be used.

The quantum dot may be synthesized by, but not limited to, a wet chemical process, a metal organic chemical vapor deposition (MOCVD) process, or a molecular beam epitaxy process (MBE) process .

In the wet chemical process, a precursor material is added to an organic solvent to grow particles. When the crystal grows, the organic solvent is naturally coordinated on the surface of the quantum dot crystal to act as a dispersing agent to control the crystal growth. Therefore, it is easier and cheaper to process the nano-particles than the vapor deposition method such as the organic metal chemical vapor deposition process or the molecular beam epitaxy It is preferable to produce the quantum dot according to the present invention by using the wet chemical process.

The quantum dot may be included in an amount of 20 to 99 parts by weight, preferably 30 to 99 parts by weight, and more preferably 50 to 99 parts by weight, based on 100 parts by weight of the entire solid content of the quantum dot dispersion. When the quantum dot is included within the above range, it is possible to provide a self-emitting photosensitive resin composition having excellent photosensitivity. When the quantum dots are included in the quantum dots below the above range, the photosensitive properties may be somewhat lowered. When the quantum dots are included in the quantum dots beyond the above range, the quantities of constituents such as alkali soluble resins and photopolymerizable compounds, Is relatively small, there is a problem that the manufacture of the color filter may be somewhat difficult. Therefore, it is preferable that the color filter is included within the above range.

The quantum dot dispersion according to the present invention comprises a first solvent having a dielectric constant of less than 12.0 at 20 占 폚. However, the solvent according to the present invention may be a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic saturated hydrocarbon solvent.

The halogenated hydrocarbon solvent may include, but is not limited to, chloroform, dichloromethane, methylene chloride, carbon tetrachloride, dichloroethane, tetrachloroethane and the like.

The aromatic hydrocarbon solvents may include, but are not limited to, benzene, toluene, dichlorobenzene, xylene, and the like.

The aliphatic saturated hydrocarbon solvent may include, but is not limited to, chain alkanes such as N-hexane, pentane, and heptane, cyclic alkanes such as cyclopentane, cyclohexane, and kerosene.

Specifically, the first solvent according to the present invention is a halogenated hydrocarbon solvent such as chloroform or dichloromethane; Aromatic hydrocarbon solvents such as benzene or toluene; Or an aliphatic saturated hydrocarbon solvent such as N-hexane in an amount of 100 ppm. Specifically 50 ppm, more specifically 10 ppm or less.

Since the solvent according to the present invention does not contain a solvent harmful to human body, there is an advantage that a worker can be protected from a potential danger.

In another embodiment of the present invention, the first solvent may have a dielectric constant of less than 8.0 at 20 캜.

In another embodiment of the present invention, the first solvent may have a dielectric constant of less than 6.0 at 20 占 폚.

The quantum dot dispersion according to the present invention has an advantage of excellent quantum dot dispersion characteristics by including the first solvent satisfying the above dielectric constant value. Therefore, the color filter and the image display device manufactured using the self-luminescent photosensitive resin composition including the quantum dot dispersion according to the present invention have an advantage of realizing the luminescent characteristics.

When the dielectric constant of the first solvent is more than 12.0 at 20 ° C, the dispersibility of the quantum dots is somewhat lowered, so that the quantum dots are agglomerated to cause deterioration of the overall luminescent characteristics. It is preferable to use a first solvent having a dielectric constant of less than 12.0 at 20 캜.

In another embodiment of the present invention, the first solvent is at least one selected from the group consisting of methyl isoamyl ketone, diisobutyl ketone, diethyl carbonate, butyl acetate, isobutyl acetate, isoamyl acetate, isobutyl isobutyrate, , Ethyl acetate, ethyl acetate, butyl acetate, n-butyl acetate, dipropylene glycol dimethyl ether and dipropylene glycol methyl ether acetate, ethyl o-formate, ethyl butyrate, diethyl acetal, methylhexanoate, methyl octanoate, Methylbutanoate, isopentyl 3-methyl butanoate, isopentyl butanoate, ethyl methyl carbonate, pentyl pentanoate, isoamyl propionate, isobutyl isobalate, propyl isovalerate, 2- 2-isopropoxy-ethane, (2-isobutoxy-ethoxy) propane, Ethane, 1-vinyloxy-2-isopentoxy-ethane, and 1-vinyloxy-2-pentoxy-ethane.

The first solvent may be contained in an amount of 25 to 95 parts by weight, preferably 30 to 95 parts by weight, and more preferably 40 to 90 parts by weight based on 100 parts by weight of the entire quantum dot dispersion. The dispersibility of the quantum dots can be improved when the first solvent is contained within the above range with respect to 100 parts by weight of the entire quantum dot dispersion. When the first solvent is contained in the range below the above range, the optical characteristics are favorable but the dispersion characteristics may be somewhat lowered. If the first solvent is exceeded, dispersion characteristics are favorable but optical properties may be somewhat lowered. .

In another embodiment of the present invention, the quantum dot dispersion may further comprise at least one selected from the group consisting of a phosphate ester dispersant, an acrylic dispersant, and a urethane dispersant.

When the quantum dot dispersion further contains at least one selected from the group consisting of the phosphoric acid ester dispersant, the acrylic dispersion agent and the urethane dispersion agent, the dispersibility between the quantum dot and the first solvent is improved and the quantum efficiency is excellent.

The phosphoric acid ester-based dispersant may contain a phosphoric ester compound. The phosphoric ester compound may be a phosphate compound having a hydroxy group or a hydroxy group present in a phosphate ester ((HO) ₂ PO (OR)) or phosphoric acid (H ₃ PO ₄ ) Or a form in which a hydrogen atom is substituted or unsubstituted with another functional group. For example, the phosphoric acid ester compound may be expressed in the form of (H ₂ PO ₃ -), but is not limited thereto. Further, in the present invention, the above-mentioned "phosphoric ester-based" may include at least one selected from the group consisting of a phosphorous acid derivative, a phosphoric acid derivative, a phosphonic acid derivative and a phosphinic acid derivative.

When the dispersant contains the phosphoric acid ester compound, there is an advantage that it is possible to suppress the deterioration of the light efficiency and the defective photosensitive property.

The phosphoric acid ester compound may further include at least one of a polyether moiety, a polyester moiety and a phosphoric acid group in one molecule.

In the present invention, "poly-" refers to a compound composed of a large number of repeating units, wherein the "polyether moiety" and the "polyester moiety" each have a repeating unit having an ether group or an ester group of 1 to 20 As shown in FIG. Preferably, in the present invention, the repeating unit may be composed of 5 to 20, more preferably 10 to 20, and in this case, there is an advantage of excellent compatibility.

When the phosphoric acid ester compound further contains a polyether moiety in one molecule, there is an advantage that compatibility with an alkali-soluble resin to be described later is improved. When the phosphate ester compound further contains a polyester moiety in one molecule The compatibility with the alkali-soluble resin and the dissolution characteristics with respect to the alkali developer are improved. When the phosphoric acid ester compound further contains a phosphoric acid group in one molecule, it can serve as a protective layer through adsorption on the surfaces of the quantum dots and has an advantage of deagglomerating the quantum dots.

Preferably, the phosphoric acid ester compound according to the present invention may contain a polyether moiety, a polyester moiety and a phosphoric acid moiety in one molecule. In this case, the quantum dots are deagglomerated to reduce the dispersed particle size and the compatibility with the alkali- And solubility characteristics in an alkali developing solution, which is advantageous for pattern formation.

In the present invention, the "acid value" can be related to the solubility in the self-luminescent photosensitive resin composition to be described later, as a value measured as the amount (mg) of potassium hydroxide necessary for neutralizing 1 g of the acrylic polymer. When the acid value of the phosphate ester compound is 10 (KOH mg / g) or more, specifically 10 to 200 (KOH mg / g), it is preferable from the viewpoint of the development speed of the self-luminescent photosensitive resin composition containing the dispersant. When the acid value is less than the above range, it may be difficult to secure a sufficient developing rate. If the acid value is in excess of the above range, the adhesion with the substrate is reduced, and the pattern tends to be short-circuited. It is desirable to satisfy the above-mentioned range.

Examples of the acrylic dispersant include acrylic block copolymers. As the acrylic block copolymer, a block including a basic group and an acid group and a block copolymer having a block containing neither the basic group nor the acid group are preferable.

The basic groups and the acid groups (hereinafter these groups may be collectively referred to as &quot; quantum dot adsorbers &quot; hereinafter) exhibit the action of adsorbing the quantum dots described above.

As the quantum dot adsorption block including the quantum dot adsorber, those comprising a monomer having an acid group and a monomer having a basic group may be used.

Examples of the monomer having a basic group include monomers having a primary amino group, a secondary amino group, a tertiary amino group or a quaternary ammonium group. Specific examples of the monomer include N, N-dimethylaminoethyl (meth) acrylate, N, N-diethylaminoethyl (meth) acrylate, N, N-dimethylacrylamide, diethylacrylamide, Methacrylamide, acryloylmorpholine, vinylimidazole, 2-vinylpyridine, a monomer having an amino group and caprolactone skeleton; A reaction product of a compound having a glycidyl group such as glycidyl (meth) acrylate and a compound having one secondary amino group in the molecule; (Meth) acryloylalkyl isocyanate compound with a compound selected from the group consisting of 4- (2-aminoethyl) -pyridine, 4- (2-aminoethyl) ) -Piperazine, 2-amino-6-methoxybenzothiazole, 1- (2-hydroxyethylimidazole), N, N-diallyl melamine, N, And the like.

Examples of the monomer having an acid group include a monomer having a carboxyl group and a sulfo group. Examples of the monomer having a carboxyl group include unsaturated monocarboxylic acid compounds such as acrylic acid, methacrylic acid and crotonic acid; Unsaturated dicarboxylic acid compounds such as maleic acid, fumaric acid and itaconic acid, and half-ester thereof; And the like. Examples of the monomer having a sulfo group include 2-acrylamide-2-methyl-1-propanesulfonic acid, 2-methacrylamide-2-methyl-1-propanesulfonic acid and styrenesulfonic acid.

Examples of the block not including the quantum dot adsorber include aromatic vinyl compounds such as styrene,? -Methylstyrene, vinyltoluene, and benzyl chloride; Unsaturated carboxylic acid alkyl esters such as methyl (meth) acrylate, ethyl (meth) acrylate and butyl (meth) acrylate; Unsaturated carboxylic acid arylalkyl esters such as benzyl (meth) acrylate; Polycaprolactone-containing compounds, polyalkylene glycol monoester compounds, and the like.

The acrylic block copolymer can be obtained by conventionally known polymerization methods such as living anion polymerization.

The amine value of the acrylic block copolymer is usually 0 to 200 mgKOH / g, preferably 0 to 120 mgKOH / g, and more preferably 0 to 80 mgKOH / g.

Disperbyk (registered trademark) -112 (amine value 36 mgKOH / g), Disperbyk (registered trademark) -2000 (amine value 4 mgKOH / g) manufactured by Big Chem Japan Co., Disperbyk (registered trademark) -2050 (amine value 30 mgKOH / g) "," Disperbyk (registered trademark) Disperbyk (registered trademark) -2070 (amine value 20 mgKOH / g) &quot;

As the urethane-based dispersing agent, a dispersant obtained by reacting a compound having a number average molecular weight of 300 to 10,000 having at least one hydroxyl group in a molecule and a basic group-containing compound having a functional group capable of reacting with an isocyanate group in the molecule with an isocyanate group of a polyisocyanate compound is used .

As a method for obtaining such a urethane-based dispersant, a method described in Japanese Patent Application Laid-Open No. 60-166318 can be used.

Examples of the polyisocyanate compound include an isocyanate compound having two or more isocyanate groups,

Tolylene diisocyanate, 2,4-tolylene diisocyanate, dimer of 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, p-xylene diisocyanate, m-xylene diisocyanate, Aromatic diisocyanate compounds such as 1,5-naphthylene diisocyanate and 3,3'-dimethylbiphenyl-4,4'-diisocyanate;

(Cyclohexyl isocyanate), methylcyclohexane-2,4 (or 2,6) diisocyanate, 1,3- (isocyanate methylene) cyclohexane, etc. Aliphatic polyisocyanate or alicyclic polyisocyanate;

A polyisocyanate having an isocyanuric group derived from the diisocyanate (such as a polyisocyanate having an isocyanuric group formed by trimerization of the diisocyanate);

A polyisocyanate obtained by reacting a polyol with a diisocyanate;

A polyisocyanate obtained by a biuret reaction of a diisocyanate compound; And the like.

Among the above polyisocyanate compounds, polyisocyanates having an isocyanuric group derived from diisocyanates such as tolylene diisocyanate and isophorone diisocyanate are preferable.

Examples of the compound having at least one hydroxy group in the molecule include a polyether compound and a polyester compound.

Examples of the polyether compound include polyalkylene glycols such as polyethylene glycol, polypropylene glycol, polybutylene glycol, and polytetramethylene glycol;

Alkylene glycols such as ethylene glycol, propane diol, propylene glycol, tetramethylene glycol, pentamethylene glycol, hexanediol, neopentyl glycol, glycerin, trimethylol propane, pentaerythritol, diglycerin, ditrimethylol propane and dipentaerythritol ;

And denatured products of low molecular weight monols such as methanol and ethanol.

Examples of the modified product of the low-molecular mono-olefins include ethylene oxide-modified product, propylene oxide-modified product, butylene oxide-modified product, and tetrahydrofuran-modified product.

Examples of the polyester compound include ethylene glycol, propane diol, propylene glycol, tetramethylene glycol, pentamethylene glycol, hexane diol, neopentyl glycol, glycerin, trimethylol propane, pentaerythritol, diglycerin, ditrimethylol propane, Modified products of alkylene glycols such as erythritol;

Denatured products of low molecular weight monols such as methanol and ethanol;

An esterified product of an aliphatic dicarboxylic acid such as adipic acid or dimeric acid with a polyol such as neopentyl glycol or methylpentanediol, that is, an aliphatic polyester polyol;

Ester compounds of aromatic dicarboxylic acids such as terephthalic acid and polyol such as neopentyl glycol, that is, polyester polyols (aromatic polyester polyols and the like);

Polyhydric alcohols such as polycarbonate polyol, acryl polyol, polytetramethylene hexaglyceryl ether (tetrahydrofuran modified product of hexaglycerin), and polyhydric alcohols such as fumaric acid, phthalic acid, isophthalic acid, itaconic acid, adipic acid, ; Esters with dicarboxylic acids such as dicarboxylic acids;

A polyhydric hydroxy group-containing compound such as a monoglyceride obtained by an ester exchange reaction between a polyhydric hydroxy group-containing compound such as glycerin and a fatty acid ester;

And the like.

Examples of modified products of alcohols such as alkylene glycols and low molecular monoesters include ε-caprolactone modified product, γ-butyrolactone modified product, δ-valerolactone modified product and methyl valerolactone modified product have.

Of the compounds having at least one hydroxy group in the molecule, an? -Caprolactone adduct of an alcohol is preferable.

The number average molecular weight of the compound having at least one hydroxy group in the molecule is 300 to 10,000, preferably 300 to 6,000.

The number average molecular weight and the weight average molecular weight can be measured by a column chromatography method.

The basic group-containing compound having a functional group capable of reacting with an isocyanate group in the molecule is not particularly limited, and a compound that is used in common in the technical field of a dispersant can be used.

As the basic group-containing compound, a compound having an active hydrogen atom of Zerewitinoff and at least one nitrogen atom-containing basic group such as a N, N-disubstituted amino group or a polyol having a heterocyclic nitrogen atom, And amines are preferable.

Examples of such basic group-containing compounds include N, N-dimethyl-1,3-propanediamine, N, N-diethyl 1,4-butanediamine, 2- Amino-2-methoxypyrimidine, 4- (2-aminoethyl) -pyridine, 1- (2-hydroxyethyl) -piperidine, N, N-diallyl-melamine, 2-amino-6-methoxybenzothiazole, 4- (2-hydroxyethyl) -morpholine, 2- mercaptopyrimidine, , 3-amino-1,2,4-triazole, 1- (2-hydroxyethyl) -imidazole and 3-mercapto-1,2,4-triazole. Among them, amines having a heterocyclic nitrogen atom are preferred.

The urethane-based dispersant can be synthesized by a conventionally known method.

The amine value of the urethane dispersant is preferably 0 to 200 mgKOH / g, more preferably 0 to 120 mgKOH / g, and even more preferably 0 to 80 mgKOH / g. The amine value of the urethane dispersant is preferably 0 to 55 mgKOH / g, more preferably 5 to 40 mgKOH / g.

Disperbyk-161 (amine value: 11 mgKOH / g, manufactured by BICKEMISA), Disperbyk-162 (amine value: 13 mgKOH / g, manufactured by BICKEMISA), Disperbyk-167 ), Disperbyk-182 (amine value 13 mg KOH / g, manufactured by Big-Chem).

In the present specification, the term amine refers to the amine value per 1 g of the solid content of the dispersant, and is determined by the potentiometric titration method (COMTITE (AUTO TITRATOR COM-900, BURET B-900, TITSTATION K-900 Quot; manufactured by Hirano Chemical Industry Co., Ltd.], and then converted to the equivalent amount of potassium hydroxide.

The dispersant may be contained in an amount of 1 to 250 parts by weight, preferably 3 to 200 parts by weight, more preferably 5 to 100 parts by weight, based on 100 parts by weight of the total solid content of the quantum dots. When the dispersant is contained within the above range, the decolorization effect of the quantum dots is excellent, and the precipitation phenomenon due to the polarity difference in the quantum dot dispersion of the present invention and the self-luminescent photosensitive resin composition containing the same can be suppressed. It is preferable since it can serve as a protective layer of the quantum dot in the process.

< Self-luminous  Photosensitive resin composition>

Another aspect of the present invention relates to the above-mentioned quantum dot dispersion material; And photopolymerizable compounds; Alkali-soluble resins; A photopolymerization initiator; And at least one selected from the group consisting of a first solvent and a second solvent.

In still another embodiment of the present invention, the quantum dot dispersion is used in an amount of 3 to 80 parts by weight, preferably 5 to 70 parts by weight, more preferably 10 to 60 parts by weight, based on 100 parts by weight of the entire self- &Lt; / RTI &gt; When the self-luminescent photosensitive resin composition according to the present invention contains the above-described quantum dot dispersion within the above-mentioned range, there is an advantage that a color filter excellent in light emission characteristics can be produced. When the quantum dot dispersion material is contained in the range below the above range, the emission characteristics may be somewhat lowered. When the quantum dot dispersion material is contained in the range exceeding the above range, the pattern formation may be somewhat difficult as the content of the other composition is decreased. And therefore, it is preferable to be included within the above range.

The self-luminescent photosensitive resin composition according to the present invention may include a photopolymerizable compound. The photopolymerizable compound contained in the self-luminescent photosensitive resin composition of the present invention is a compound capable of polymerizing under the action of light and a photopolymerization initiator described later, and examples thereof include monofunctional monomers, bifunctional monomers, and other polyfunctional monomers.

The type of the monofunctional monomer is not particularly limited, and examples thereof include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate N-vinylpyrrolidone, and the like.

The type of the bifunctional monomer is not particularly limited and examples thereof include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) Glycol di (meth) acrylate, bis (acryloyloxyethyl) ether of bisphenol A, and 3-methylpentanediol di (meth) acrylate.

The type of the polyfunctional monomer is not particularly limited and includes, for example, trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri Acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol tri (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (Meth) acrylate, propoxylated dipentaerythritol hexa (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and the like. Of these, multifunctional monomers having two or more functional groups are preferably used.

Commercially available examples of the photopolymerizable compound include, but are not limited to, A9550 from Shin Nakamura Co., Ltd.

The photopolymerizable compound may be contained in an amount of 5 to 50 parts by weight, specifically 15 to 45 parts by weight, more specifically 20 to 37 parts by weight, based on 100 parts by weight of the total solid content of the self-light-sensitive photosensitive resin composition. When the photopolymerizable compound is included in the above range, it is advantageous in terms of strength and smoothness of the pixel portion.

When the photopolymerizable compound is contained in the range below the above range, the strength of the pixel portion may be somewhat lowered, and when the photopolymerizable compound is contained in the range exceeding the above range, the smoothness may be somewhat lowered. .

The self-luminescent photosensitive resin composition according to the present invention may contain an alkali-soluble resin.

The alkali-soluble resin can make the unexposed portion of the color filter made of the self-light-sensitive photosensitive resin composition become alkali-soluble and can remove the alkali-soluble resin, and can perform the role of retaining the exposed region. When the self-luminescent photosensitive resin composition contains the alkali-soluble resin, the quantum dots may be uniformly dispersed in the composition, and the quantum dots may be protected during the process to maintain the luminance.

The alkali-soluble resin according to the present invention may be selected from those having an acid value of 50 to 200 (KOH mg / g). Further, in order to improve the surface hardness of the alkali-soluble resin for use as a color filter, the molecular weight and molecular weight distribution (Mw / Mn) may be limited. Preferably a weight average molecular weight of 3,000 to 35,000, preferably 5,000 to 32,000, and a molecular weight distribution of 1.5 to 6.0, preferably 1.8 to 4.0. The alkali-soluble resin having the above molecular weight and molecular weight distribution in the above range can be improved in hardness as mentioned above, and has a high residual film ratio as well as excellent solubility in the non-exposed portion in the developer and can improve resolution.

The alkali-soluble resin includes at least one selected from the group consisting of a copolymer of a carboxyl group-containing unsaturated monomer, a copolymer of a monomer having a copolymerizable unsaturated bond and a combination thereof.

The carboxyl group-containing unsaturated monomer may be an unsaturated monocarboxylic acid, an unsaturated dicarboxylic acid, an unsaturated tricarboxylic acid, or the like. Specific examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid,? -Chloroacrylic acid, cinnamic acid, and the like. Examples of the unsaturated dicarboxylic acid include maleic acid, fumaric acid, itaconic acid, citraconic acid, and mesaconic acid. The unsaturated polycarboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, citraconic anhydride and the like. The unsaturated polycarboxylic acid may also be mono (2-methacryloyloxyalkyl) ester thereof, for example, mono (2-acryloyloxyethyl) succinate, mono (2-methacryloyloxyethyl) , Phthalic acid mono (2-acryloyloxyethyl), phthalic acid mono (2-methacryloyloxyethyl), and the like. The unsaturated polyvalent carboxylic acid may be a mono (meth) acrylate of the divalent dicarboxylic polymer of both ends, and examples thereof include? -Carboxypolycaprolactone monoacrylate,? -Carboxypolycaprolactone monomethacrylate and the like. These carboxyl group-containing monomers may be used alone or in combination of two or more.

The monomer copolymerizable with the carboxyl group-containing unsaturated monomer may be an aromatic vinyl compound, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated ether compound, An unsaturated imide compound, an aliphatic conjugated diene compound, a macromonomer having a monoacryloyl group or monomethacryloyl group at the end of the molecular chain, a vulcanizable monomer, and combinations thereof.

More specifically, the copolymerizable monomer is selected from the group consisting of styrene,? -Methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m- Vinylbenzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p-vinyl benzyl glycidyl Aromatic vinyl compounds such as ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, Acrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl Methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxy diethylene glycol acrylate, methoxy diethylene glycol methacrylate, methoxy triethylene glycol acrylate, methoxy triethylene glycol methacrylate Acrylate, methoxypropylene glycol methacrylate, methoxypropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadiene Acrylate, dicyclopentadienyl methacrylate, adamantyl (meth) acrylate, (Meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate and the like Unsaturated carboxylic acid esters; Aminoethyl methacrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2- Unsaturated carboxylic acid amino groups such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl methacrylate and 3- Alkyl ester compounds; Unsaturated carboxylic acid glycidyl ester compounds such as glycidyl acrylate and glycidyl methacrylate; Carboxylic acid vinyl ester compounds such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; Unsaturated ether compounds such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; Vinyl cyanide compounds such as acrylonitrile, methacrylonitrile,? -Chloroacrylonitrile, and vinylidene cyanide; Unsaturated amides such as acrylamide, methacrylamide,? -Chloroacrylamide, N-2-hydroxyethyl acrylamide and N-2-hydroxyethyl methacrylamide; Unsaturated imide compounds such as maleimide, benzylmaleimide, N-phenylmaleimide and N-cyclohexylmaleimide; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; And a monoacryloyl group or monomethacryloyl group at the end of the polymer molecular chain of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, Macromonomers; A bulky monomer such as a monomer having a norbornyl skeleton, a monomer having an adamantane skeleton, or a monomer having a rosin skeleton which can lower the relative dielectric constant can be used.

The alkali-soluble resin may be contained in an amount of 10 to 80 parts by weight, specifically 15 to 70 parts by weight, more specifically 20 to 45 parts by weight, based on 100 parts by weight of the total solid content of the self-emission photosensitive resin composition.

When the alkali-soluble resin is contained within the above-mentioned range, the solubility in the developer is sufficient, the pattern formation is easy, and the reduction of the film thickness of the pixel portion of the exposed portion is prevented during development, so that the non-pixel portion is satisfactorily missed. If the alkali-soluble resin is contained in the range below the above-mentioned range, the non-pixel portion may be somewhat missed. If the alkali-soluble resin is contained in the above range, the solubility in the developer may be somewhat lowered and pattern formation may be somewhat difficult.

The self-luminescent photosensitive resin composition according to the present invention may contain a photopolymerization initiator, and the photopolymerization initiator may be used without particular limitation as long as it can polymerize the photopolymerizable compound. Particularly, from the viewpoints of polymerization characteristics, initiation efficiency, absorption wavelength, availability, and cost, the photopolymerization initiator is preferably used in combination with an acetophenone compound, a benzophenone compound, a triazine compound, a biimidazole compound, It is preferable to use at least one compound selected from the group consisting of compounds.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2-hydroxy- 1- [4- 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropane-1-one, 2-methylcyclohexyl phenyl ketone, 2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1-one 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one.

Examples of the benzophenone compound include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3 ', 4,4'-tetra tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, and the like.

Specific examples of the triazine compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6 - (4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6-piperonyl-1,3,5-triazine, (Trichloromethyl) -6- [2- (5-methylfuran-2- (4-methoxystyryl) -1,3,5-triazine, Yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan- , 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine, 2,4- ) -6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine.

Specific examples of the imidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbimidazole, 2,2'-bis (2,3- Phenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) , 2,2'-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) Imidazole compounds in which 4'5,5'-tetraphenyl-1,2'-biimidazole or phenyl groups at 4,4 ', 5,5' positions are substituted by carboalkoxy groups. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3- , 2,2-bis (2,6-dichlorophenyl) -4,4'5,5'-tetraphenyl-1,2'-biimidazole is preferably used do.

Specific examples of the oxime compounds include o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one and commercially available products such as Irgacure OXE 01 and OXE 02 from BASF.

Examples of the thioxanthone compound include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4- .

The photopolymerization initiator may be included in an amount of 0.1 to 10 parts by weight, preferably 1 to 9.5 parts by weight, more preferably 5 to 9.5 parts by weight based on 100 parts by weight of the entirety of the solid content of the self-light-sensitive photosensitive resin composition.

When the photopolymerization initiator is contained within the above range, the self-light-sensitive photosensitive resin composition is highly sensitized and the exposure time is shortened, so that the productivity is improved and the high resolution can be maintained. Further, there is an advantage that the strength of the pixel portion formed by using the self-luminescent photosensitive resin composition according to the present invention and the smoothness on the surface of the pixel portion are improved.

The photopolymerization initiator may further include a photopolymerization initiator in order to improve the sensitivity of the self-luminescent photosensitive resin composition. When the photopolymerization initiator is included, the sensitivity is further increased and the productivity is improved.

The photopolymerization initiation assistant may be, for example, at least one compound selected from the group consisting of an amine compound, a carboxylic acid compound, and an organic sulfur compound having a thiol group, but is not limited thereto.

As the amine compound, an aromatic amine compound is preferably used. Specific examples of the amine compound include aliphatic amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4- Dimethylaminobenzoic acid, 2-ethylhexyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone ), 4,4'-bis (diethylamino) benzophenone, and the like.

The carboxylic acid compound is preferably an aromatic heteroacetic acid. Specifically, the carboxylic acid compound is preferably selected from the group consisting of aromatic heteroacetic acids, such as phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthioacetic acid, Chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, and naphthoxyacetic acid.

Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris (3-mercaptobutyloxyethyl) 1,3,5-triazine-2,4,6 (1H, 3H, 5H) -thione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexacis (3-mercaptopropionate), and tetraethylene glycol bis (3-mercaptopropionate) .

The photopolymerization initiator may be appropriately added in the range not impairing the scope of the present invention.

The second solvent to be contained in the self-luminescent photosensitive resin composition of the present invention is not particularly limited and may include an organic solvent ordinarily used in the art. The first solvent may be the same as or different from the second solvent. However, the second solvent may be a halogenated hydrocarbon solvent; Aromatic hydrocarbon solvents; And an aliphatic saturated hydrocarbon solvent.

Specific examples of the second solvent include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether and ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl Diethylene glycol dialkyl ethers such as ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; Alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate and propylene glycol monopropyl ether acetate; Alkoxyalkyl acetates such as methoxybutyl acetate and methoxypentyl acetate; 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 methyl 3-methoxypropionate; and cyclic esters such as? -butyrolactone.

The second solvent is preferably an organic solvent having a boiling point of 100 占 폚 to 200 占 폚 in the second solvent in terms of coatability and drying property, more preferably alkylene glycol alkyl ether acetates, ketones, 3 Ethoxypropionate, methyl 3-methoxypropionate and the like, and more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethyl 3-ethoxypropionate, 3- Methyl propoxypropionate, and the like. These second solvents may be used alone or in combination of two or more.

The second solvent may be contained in an amount of 25 to 90 parts by weight, specifically 30 to 80 parts by weight, based on 100 parts by weight of the entire self-light-sensitive photosensitive resin composition, but is not limited thereto.

However, when the content of the second solvent is within the above range, the coating property when applied with a coating apparatus such as a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater) Which is preferable. When the content of the second solvent is less than the above range, the coating property may be somewhat lowered, and the process may be somewhat difficult. When the content is above the range, the performance of the color filter formed of the self-luminescent photosensitive resin composition is somewhat deteriorated Can cause problems.

The self-luminescent photosensitive resin composition according to the present invention may further include an additive such as an adhesion promoter and a surfactant in order to improve coatability or adhesion.

The adhesion promoter may include a silane coupling agent having a reactive substituent selected from the group consisting of a carboxyl group, a methacryloyl group, an isocyanate group, an epoxy group, and a combination thereof, which may be added to improve adhesion with the substrate. But is not limited thereto. For example, the silane coupling agent may be at least one selected from the group consisting of trimethoxysilylbenzoic acid,? -Methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, vinyltrimethoxysilane,? -Isocyanatepropyltriethoxysilane,? -Glycidoxy Propyltrimethoxysilane, and? - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, etc., these may be used singly or in combination of two or more kinds

When the self-luminescent photosensitive resin composition according to the present invention includes the above-mentioned surfactant, there is an advantage that the coating property can be improved. For example, the surfactant may be selected from the group consisting of BM-1000, BM-1100 (BM Chemie), Prolide FC-135 / FC-170C / FC-430 (Sumitomo 3M Co.), SH-28PA / -190 / SZ- Co., Ltd.) may be used, but the present invention is not limited thereto.

In addition, the self-luminescent photosensitive resin composition according to the present invention may further contain additives such as an antioxidant, an ultraviolet absorber and an antiflocculant to the extent that the effect of the present invention is not impaired, It can be appropriately added by a person skilled in the art. For example, the additive may be used in an amount of 0.05 to 10 parts by weight, specifically 0.1 to 10 parts by weight, more specifically 0.1 to 5 parts by weight, based on the total weight of the self-emission photosensitive resin composition, but is not limited thereto.

<Color filter>

Another aspect of the present invention relates to a color filter manufactured using the self-luminous photosensitive resin composition described above.

A color filter according to the present invention includes a quantum dot; And a first solvent having a dielectric constant of less than 12.0 at 20 DEG C, wherein the halogenated hydrocarbon solvent, such as chloroform or dichloromethane; Aromatic hydrocarbon solvents such as benzene or toluene; And an aliphatic saturated hydrocarbon solvent such as N-hexane; and a cured product of the self-luminescent photosensitive resin composition containing the quantum dot dispersion excellent in dispersibility, Since it does not contain a harmful solvent in the human body, there is an advantage in environmental aspect.

The color filter includes a substrate and a pattern layer formed on the substrate.

The substrate may be the substrate of the color filter itself, or may be a portion where a color filter is placed on a display device or the like, and is not particularly limited. The substrate may be glass, silicon (Si), silicon oxide (SiOx), or a polymer substrate, and the polymer substrate may be polyethersulfone (PES) or polycarbonate (PC).

The pattern layer may be a layer containing the self-luminescent photosensitive resin composition of the present invention, which is formed by applying the self-luminescent photosensitive resin composition and exposing, developing, and thermosetting the self-luminescent photosensitive resin composition in a predetermined pattern. The pattern layer may be formed by performing a method commonly known in the art.

The color filter including the substrate and the pattern layer as described above may further include a partition wall formed between each pattern, and may further include a black matrix, but is not limited thereto.

Further, the color filter may further include a protective film formed on the pattern layer of the color filter.

In another embodiment of the present invention, the color filter may include at least one 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 selected from the group consisting of a red pattern layer including an effective quantum dot, a green pattern layer including a rust quantum dot, and a blue pattern layer including a blue quantum dot according to the present invention . The red pattern layer, the green pattern layer, and the blue pattern layer may emit red light, green light, and blue light when irradiated with light, respectively. At this time, the emission light of the light source is not particularly limited, but blue light A light source that emits light can be used.

The color filter may include only a pattern layer of two colors of a red pattern layer, a green pattern layer, and a blue pattern layer, but is not limited thereto. However, if the color filter has only a pattern layer of two colors, the pattern layer may further include a transparent pattern layer not containing the quantum dot particles.

When the color filter includes only the pattern layer of the two colors, a light source that emits light having a wavelength other than the two 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. In this case, the red quantum dot emits red light and the green quantum dot emits green light. Blue light can be seen as blue light by the light source is transmitted as it is.

<Image Display Device>

Further, another aspect of the present invention relates to an image display apparatus including the color filter described above.

The color filter of the present invention is applicable not only to a general liquid crystal display device but also to various image display devices such as an electroluminescence display device, a plasma display device, and a field emission display device.

The image display apparatus according to the present invention has an advantage of excellent luminescence properties because it contains a cured product of a self-luminescent photosensitive resin composition containing a quantum dot dispersion excellent in dispersibility.

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

Hereinafter, the present invention will be described in detail by way of examples to illustrate the present invention. However, the embodiments according to the present disclosure can be modified in various other forms, and the scope of the present specification is not construed as being limited to the above-described embodiments. Embodiments of the present disclosure are provided to more fully describe the present disclosure to those of ordinary skill in the art. In the following, "%" and "part" representing the content are by weight unless otherwise specified.

Manufacturing example  One: InP / ZnS  Core-shell Qdot  Particle synthesis

InP  Core Quantum dot  Produce

0.4 mmol (0.058 g) of indium acetate, 0.6 mmol (0.15 g) of palmitic acid and 20 mL of 1-octadecene were placed in a reactor and heated to 120 ° C under vacuum. After 1 hour, the atmosphere in the reactor was changed to nitrogen. After heated to 280 DEG C, a mixed solution of 0.2 mmol (58 uL) of tris (trimethylsilyl) phosphine (TMS3P) and 1.0 mL of trioctylphosphine was rapidly injected and reacted for 20 minutes. Acetone was added to the reaction solution rapidly cooled to room temperature, and the precipitate obtained by centrifugation was dispersed in toluene. The obtained InP semiconductor nanocrystals exhibit a first absorption maximum wavelength of 560 to 590 nm.

InP / ZnS  Core-Shell Quantum dot  Produce

2.4 mmol (0.448 g) of zinc acetate, 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in a reactor and heated to 120 DEG C under vacuum. After 1 hour, the atmosphere in the reactor was converted to nitrogen and the reactor was heated to 280 degrees. 2 ml of the previously synthesized InP core solution was added, followed by 4.8 mmol of S / TOP, and the resulting mixture was reacted for 2 hours. Ethanol was added to the reaction solution rapidly cooled to room temperature, centrifuged, and the resulting precipitate was filtered under reduced pressure and dried under reduced pressure to obtain InP / ZnS core-shell quantum dots.

The photoluminescence spectrum of the obtained nano quantum dot was 635 nm.

Manufacturing example  2: Synthesis of alkali-soluble resin

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen-introducing tube was provided with 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 t-butylperoxy-2-ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) were charged and stirred to prepare a monomer dropping tank. 6 parts by weight of n-dodecanethiol And 24 parts by weight of PGMEA were added and stirred to prepare a chain transfer agent dropping lot. Thereafter, 395 parts by weight of PGMEA was introduced into the flask, the atmosphere in the flask was changed to nitrogen in air, and the temperature of the flask was raised to 90 DEG C while stirring. Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The temperature was raised to 110 DEG C for 1 hour and maintained for 3 hours. Thereafter, a gas introduction tube was introduced, and a bubble of oxygen / nitrogen = 5/95 (v / v) I started the ring. Then, 10 parts by weight of glycidyl methacrylate, 0.4 part by weight of 2,2'-methylenebis (4-methyl-6-t-butylphenol) and 0.8 part by weight of triethylamine were charged into a flask, The reaction was continued and then 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.

Manufacturing example  3: Qdot Dispersion  Produce

The quantum dot dispersion (A ') was prepared according to the composition shown in the following Table 1, and the first solvent is shown in Table 2 below.

A quantum dot dispersant (A) Quantum dot (B) a first solvent (D) Dispersant B-1 B-2 B-3 B-4 B-5 B-6 B-7 D-1 D-2 D-3 D-4 Production Example 1 30 70 - - - - - - - - - - Production Example 2 30 - 70 - - - - - - - - - Production Example 3 30 - - 70 - - - - - - Production Example 4 30 - - - 70 - - - - - - Production Example 5 30 - - - - 70 - - - - - - Production Example 6 30 65 - - - - - - 5 - - - Production Example 7 30 65 - - - - - - - 5 - - Production Example 8 30 65 - - - - - - - - 5 - Production Example 9 30 65 - - - - - - - - - 5 Production Example 10 30 - - - - - 70 - - - - - Production Example 11 30 - - - - - 65 - 5 - - - Production Example 12 30 - - - - - 65 - - - - 5 Production Example 13 30 - - - - - - 65 5 - - - A: Quantum dots according to Production Example 1
D-1: Disperbyk-111 (phosphoric acid ester dispersing agent, manufactured by Big Chemie)
D-2: Disperbyk-103 (phosphoric acid ester dispersant, manufactured by Big Chemie)
D-3: Disperbyk-161 (manufactured by Big Chemie, a urethane dispersant)
D-4: Disperbyk-2001 (acrylic dispersant, manufactured by Big Chemie)

The first solvent Dielectric constant (ε) @ 20 ℃ B-1: Dipropylene glycol dimethyl ether 10.5 B-2: Dipropylene Glycol Methyl Ether Acetate 8.3 B-3: Hexyl acetate 4.42 B-4: diethyl carbonate 2.82 B-5: 2,6-dimethyl-4-heptanone 9.91 B-6: Propylene glycol methyl ether (PGME) 12.3 B-7: DAA (Diacetone Alcohol) 18.2

Example  And Comparative Example  : Self-luminous  Preparation of Photosensitive Resin Composition

The self-luminescent photosensitive resin compositions according to Examples and Comparative Examples were prepared with the composition according to Table 3 below.

Example Comparative Example One 2 3 4 5 6 7 8 9 One 2 3 4 The quantum dot dispersion (A ') Production Example 1 40 - - - - - - - - - - - - Production Example 2 - 40 - - - - - - - - - - - Production Example 3 - 40 - - - - - - - - - - Production Example 4 - - - 40 - - - - - - - - - Production Example 5 - - - - 40 - - - - - - - - Production Example 6 - - - - - 40 - - - - - - - Production Example 7 - - - - - - 40 - - - - - - Production Example 8 - - - - - - - 40 - - - - - Production Example 9 - - - - - - - - 40 - - - - Production Example 10 - - - - - - - - - 40 - - - Production Example 11 - - - - - - - - - - 40 - - Production Example 12 - - - - - - - - - - - 40 - Production Example 13 - - - - - - - - - - - - 40 The alkali-soluble resin (B ') 20 20 20 20 20 20 20 20 20 20 20 20 20 The photopolymerizable compound (C ') 20 20 20 20 20 20 20 20 20 20 20 20 20 Photopolymerization initiator (D ') 5 5 5 5 5 5 5 5 5 5 5 5 5 The second solvent (E ') 15 15 15 15 15 15 15 15 15 15 15 15 15 A ': Quantum dot dispersion according to Production Example 3
B ': An alkali-soluble resin according to Production Example 2
C ': dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
D ': Irgacure-907 (BASF)
E ': Propylene glycol monomethyl ether acetate (PGMEA)

Color filter ( Glass substrate )

A color filter was prepared using the self-luminescent photosensitive resin composition prepared according to the above Examples and Comparative Examples. Specifically, each of the self-luminescent photosensitive resin compositions was coated on a glass substrate by spin coating, and then placed on a heating plate and held at a temperature of 100 캜 for 3 minutes to form a thin film. Subsequently, a test photomask having a transmittance pattern of 20 mm × 20 mm square and a line / space pattern of 1 μm to 100 μm was placed on the thin film and irradiated with ultraviolet rays at a distance of 100 μm from the test photomask. At this time, the ultraviolet light source was irradiated with light at an exposure dose (365 nm) of 200 mJ / cm ² using an ultrahigh pressure mercury lamp (trade name: USH-250D) manufactured by Usuo Denki Co., Ltd., and no special optical filter was used. The thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution of pH 10.5 for 80 seconds to develop. The glass plate coated with the thin film was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150 캜 for 10 minutes to prepare a color filter pattern. The film thickness of the self-emission color pattern prepared above was 3.0 mu m.

Experimental Example

(1) Dispersion size measurement of the quantum dot dispersion and the self-luminescent photosensitive resin composition

The dispersion particle size was measured using ELSZ-2000ZS (manufactured by Otsuka) and the results are shown in Table 4 below. Normally, when the quantum dot particles are aggregated, the dispersed particle size becomes large, thereby causing a problem that the luminescent properties are deteriorated.

(2) Measurement of photoluminescence intensity

The photo-converted region was measured by a 365 nm type 4 W UV illuminator (VL-4LC, VILBER LOURMAT) on a pattern portion formed in a pattern of 20 mm × 20 mm square among the color filters having the self-luminous pixels, And measured using USB2000 + (Ocean Optics). The higher the photoluminescence intensity, the better the self-luminescence characteristics can be determined. The photoluminescence intensity measurement results are shown in Table 4 below.

Quantum dot dispersion particle size (nm) Self-luminescent photosensitive resin composition Particle size (nm) Photoluminescence Intensity Example 1 7 8 53,275 Example 2 8 9 55,935 Example 3 8 8 59,354 Example 4 7 7 53,215 Example 5 8 7 54,252 Example 6 7 8 58,446 Example 7 9 10 57,243 Example 8 7 8 55,658 Example 9 8 9 54,982 Comparative Example 1 15 1152 18,542 Comparative Example 2 13 921 25,654 Comparative Example 3 15 865 28,569 Comparative Example 4 35 2671 6,179

As can be seen from the above Table 4, it was possible to provide a quantum dot dispersion having excellent dispersion characteristics and excellent photoluminescence quantum efficiency by using a solvent having a dielectric constant of less than 12 in the production of the quantum dot dispersion.

Claims (9)

Quantum dot; And
And a first solvent having a dielectric constant less than 12.0 at 20 DEG C,
However, halogenated hydrocarbon solvents; Aromatic hydrocarbon solvents; And an aliphatic saturated hydrocarbon solvent. The method according to claim 1,
Wherein the first solvent has a dielectric constant of less than 8.0 at 20 占 폚. 3. The method of claim 2,
Wherein the first solvent has a dielectric constant of less than 6.0 at 20 占 폚. The method according to claim 1,
The first solvent may be selected from the group consisting of methyl isoamyl ketone, diisobutyl ketone, diethyl carbonate, butyl acetate, isobutyl acetate, isoamyl acetate, isobutyl isobutyrate, 2-ethylhexyl acetate, hexyl acetate, But are not limited to, dimethyl ether and dipropylene glycol methyl ether acetate, ethyl o-formate, ethyl butyrate, diethyl acetal, methyl hexanoate, methyl octanoate, ethyl isobalate, methyl 3-methyl butanoate, Isobutyl isobutyrate, propyl isobalate, 2- (2- (vinyloxy) ethoxy) propane, isobutyl isobutyl ketone, Ethoxy, 2-isopropoxy-ethane, 1- (2-isobutoxy-ethoxy) Vinyloxy-2-pentoxy-ethane, and vinyloxy-2-pentoxy-ethane. The method according to claim 1,
Wherein the quantum dot dispersion further comprises at least one selected from the group consisting of a phosphate ester dispersion agent, an acrylic dispersion agent and a urethane dispersion agent. A quantum dot dispersion according to any one of claims 1 to 5; And
Photopolymerizable compounds; Alkali-soluble resins; A photopolymerization initiator; And at least one member selected from the group consisting of a first solvent and a second solvent. The method according to claim 6,
Wherein the quantum dot dispersion is contained in an amount of 3 to 80 parts by weight based on 100 parts by weight of the entire self-light-sensitive photosensitive resin composition. A color filter comprising a cured product of the self-luminescent photosensitive resin composition according to claim 6. An image display device comprising the color filter according to claim 8.