TW201713729A - Fluorescent dye dispersion liquid for color conversion layer, self emission photosensitive resin composition, method for preparing the same, color conversion filter and display device comprising the same - Google Patents

Abstract

The present disclosure relates to a fluorescent dye dispersion liquid for a color conversion layer, a self-emission photosensitive resin composition for a color conversion layer prepared using the same, a method for manufacturing the same, a color conversion filter manufactured using the same, and a display device including the color conversion filter.

Description

Fluorescent dye dispersion, self-emissive photosensitive resin composition and preparation method, color conversion color filter, and display device therewith

FIELD OF THE INVENTION The present disclosure relates to a fluorescent dye dispersion for a color conversion layer, a self-emitting photosensitive resin composition, and a color conversion color filter prepared using the same.

BACKGROUND OF THE INVENTION The display industry has recently experienced dramatic changes from CRTs to flat panel displays represented by PDPs, OLEDs, LCDs, and the like. Among these, the LCD has been widely used as an image display device in almost all industries, and its application has been expanding. However, a separate backlight unit is necessary in the LCD because it lacks its own illumination device.

A pigment or dye-based colored color filter for color expression in a conventional liquid crystal display device uses a property of absorbing and transmitting light in a specific region of a backlight unit, and has a problem that the transfer efficiency of the illuminated backlight unit is rapidly lowered. Therefore, in the related industry, attempts have been made to enhance the light efficiency by variations in the materials and structures of the color filters and the LCD panel, thereby enhancing the efficiency of the backlight unit, however, the problem is that it is difficult due to the limitation of the transfer performance of the coloring material. Both color reproduction performance and brightness performance are satisfied.

As a means for solving these problems, the color conversion method can be used as a method of obtaining multicolor luminescence using an organic electroluminescence (EL) device. The color conversion method is a method of expressing a color by mounting a color conversion layer (absorbing light emitted from an organic EL device and emitting light having a wavelength distribution different from an absorption wavelength of a front surface of the organic EL device). The color conversion method simplifies manufacturing because an organic EL device having monochromatic light emission can be used. Therefore, an organic EL device having a color conversion layer in a large-screen display is actively considered. Moreover, such displays have properties such as advantageous color reproduction performance by combining color conversion layers and color filters.

However, when the solubility is low, even when the fluorescence efficiency is excellent, it is difficult to use the dye used in the color conversion layer. In particular, many dyes are only soluble in solvents that are difficult to be used in actual processes such as NMP, DMSO, water, etc. due to environmentally harmful causes, and there are many limitations in the use of dyes, even when the efficiency is fluorescent. advantageous. Therefore, there is a need to develop a method for preparing a color conversion layer using a dye having favorable fluorescence efficiency without limitation in solubility.

SUMMARY OF THE INVENTION The present disclosure has been made in view of the above, and the present disclosure is directed to providing a fluorescent dye dispersion for a color conversion color filter that exhibits excellent fluorescence efficiency regardless of the fluorescent dye for the solvent (specific The solubility of the solvent that can be used in the process.

The present disclosure also relates to a resin composition for a color conversion layer prepared using a fluorescent dye dispersion, a color conversion color filter using the same, and an image display device having the same.

An aspect of the present disclosure provides a fluorescent dye dispersion (A) for a color conversion layer, comprising: a fluorescent dye (A-1), an extender pigment (A-2), a solvent (A-3), a dispersing agent ( A-4) and a polymer resin (A-5), wherein the fluorescent dye is dispersed in the solvent by the dispersing agent.

Another aspect of the present disclosure provides a self-emissive photosensitive resin composition for a color conversion layer, comprising: a fluorescent dye dispersion liquid (A), an alkali-soluble resin (B), and a photopolymerizable compound (C) for a color conversion layer. ), a photopolymerization initiator (D), a solvent (E), and a high refractive index material (F).

DETAILED DESCRIPTION OF THE INVENTION The present disclosure provides a fluorescent dye dispersion (A) for a color conversion layer comprising: a fluorescent dye (A-1), an extender pigment (A-2), a solvent (A-3), a dispersing agent ( A-4) and a polymer resin (A-5) in which the fluorescent dye (A-1) is dispersed in the solvent by the dispersing agent (A-4).

Hereinafter, the components of the fluorescent dye dispersion (A) for forming a color conversion layer of the present disclosure will be described in detail. Fluorescent dye dispersion for color conversion layer (A) (A-1) Fluorescent dye

Fluorescent dyes which have been used in the prior art for color conversion layers have many limitations in use when the solubility of the solvent is low (even with excellent fluorescence efficiency). Dyes having excellent fluorescence efficiency tend to be well soluble in NMP, DMSO, etc. However, these solvents have many limitations in practical processes due to, for example, hazardous or environmental regulations. Therefore, existing methods of dissolving dyes in solvents have many limitations in the choice of dyes and solvents.

The present disclosure is not limited by the solubility of a fluorescent dye included in a fluorescent dye dispersion for a color conversion layer to a solvent, and therefore, provides a wide selection of dyes, and since the type is not particularly limited, it can be preferably selected and used. A dye with excellent fluorescence efficiency.

Specific examples of the fluorescent dye may include dyes classified into a solvent, an acidic, a basic, an active, a direct, a dispersed or a reduced dye in a color index (published by The Society of Dyers and Colourists). More specifically, the following color index (C.I.) dye may be included, however, the dye is not limited thereto. CI Solvent Yellow 25, 79, 81, 82, 83 and 89; CI Acid Yellow 7, 23, 25, 42, 65 and 76; CI Reactive Yellow 2, 76 and 116; CI Direct Yellow 4, 28, 44, 86 and 132; CI Disperse Yellow 54 and 76; CI Solvent Orange 41, 54, 56 and 99; CI Acid Orange 56, 74, 95, 108, 149 and 162; CI Reactive Orange 16; CI Direct Orange 26; CI Solvent Red 24, 49, 90, 91, 118, 119, 122, 124, 125, 127, 130, 132, 160 and 218; CI Acid Red 73, 91, 92, 97, 138, 151, 211, 274 and 289; CI Acid Violet 102; CI Solvent Greens 1 and 5; CI Acid Greens 3, 5, 9, 25 and 28; CI Alkaline Green 1; CI Reducing Green 1, etc.

Further, specific examples of other commonly used fluorescent dyes other than the above types may include coumarin-based dyes such as 3-(2-benzothiazolyl)-7-diethylaminocoumarin (coumarin 6). , 3-(2-benzimidazolyl)-7-diethylaminocoumarin (coumarin 7) and coumarin 135; low molecular organic fluorescent dyes, including naphthoquinone imine Dyes such as Solvent Yellow 43 and Solvent Yellow 44; quinacridone derivatives such as diethyl quinacridone (DEQ); cyanine pigments such as 4-dicyanomethylidene-2-methyl-6-(p- Dimethylaminostyryl-4H-pyran (DCM-1 (I)), DCM-2 (II) and DCJTB (III); 4,4-difluoro-1,3,5,7-tetra Phenyl-4-bora-3a,4a-diaza-s-inducing province (IV) and Nile red (V); lanthanide dyes such as Luma near F red, Luma near F orange and Luma Near F yellow; xanthene pigments such as rhodamine B and rhodamine 6G; pyridine pigments such as pyridine 1; or polymer fluorescent materials represented by polyphenylene, polyarylene and polyfluorene, and may One or more selected from the group consisting of them are used.

In the present disclosure, one or more of a coumarin system, a xanthene system, and a lanthanide selected from a fluorescent dye may be more preferably used. The fluorescent dye (A-1) may generally be included in an amount of 0.1% by weight to 30% by weight, preferably 0.1% by weight to 20% by weight, based on the total weight of the fluorescent dye dispersion liquid for a color conversion layer of the present disclosure. The content satisfying the above range is preferable because of the advantage of minimizing aggregation between the dyes. (A-2) Body pigment

The extender pigment (A-2) included in the fluorescent dye dispersion for the color conversion layer of the present disclosure functions as a more miniaturized fluorescent dye particle. The extender pigment is not particularly limited in the present disclosure, and a known type can be used.

Specific examples of the extender pigment may include barium sulfate (BaSO ₄ ), barium carbonate (BaCO ₃ ), calcium carbonate powder (CaCO ₃ ), cerium oxide powder (SiO ₂ ), basic magnesium carbonate (MgCO ₃ ), and aluminum hydroxide. , kaolin, feldspar and so on. More preferably, barium sulfate (BaSO ₄ ), barium carbonate (BaCO ₃ ), calcium carbonate powder (CaCO ₃ ), cerium oxide powder (SiO ₂ ), basic magnesium carbonate (MgCO ₃ ), and more preferably may be used. , barium sulfate (BaSO ₄ ), calcium carbonate powder (CaCO ₃ ) or cerium oxide powder (SiO ₂ ). Further, those having higher transparency may be preferred.

The weight ratio of the above fluorescent dye (A-1) to the extender pigment (A-2) is preferably from 1:99 to 99:1, more preferably from 2:98 to 50:50, and still more preferably from 3:97 to 20:80. (A-3) solvent

The solvent (A-3) included in the fluorescent dye dispersion for a color conversion layer of the present disclosure may use a solvent which does not actually dissolve the fluorescent dye (A-1) or a solvent which dissolves the dye in a small amount, and passes Using these, the fluorescent dye can be dispersed in a solvent in a fine particle state. The dye dispersed in this fine particle state is aggregated at the molecular level, and it is predicted that the dye pair has difficulty in being dissociated or decomposed due to the ion pair of the dye, so the dye has enhanced heat resistance and light stability as compared with the dye dissolved in the solution. Sex. The dye in such a fine particle state can enhance the dispersibility or dispersion stability in a solvent by using the dispersing agent (A-4) which will be described later.

More specifically, as the solvent (C) used in the present disclosure, a solvent having a solubility of a fluorescent dye (A) of 0.2 (g/100 g solvent) or less at 23 ° C is preferable, and has 0.1 A solvent of (g/100 g solvent) or less of the solubility of the fluorescent dye (A) is more preferable. The fluorescent dye dispersion of the present disclosure can be used as a fine particle by dispersing the fluorescent dye (A) in a solvent by using a solvent which does not substantially dissolve the dye or a solvent which dissolves the dye in a small amount.

As the solvent (A-3) included in the fluorescent dye dispersion liquid for a color conversion layer of the present disclosure, an ester solvent can be more preferably used in terms of dispersion stability. Examples of the ester solvent may include ethyl acetate, butyl acetate, methyl methoxypropionate, ethyl ethoxypropionate, ethyl lactate, methoxyethyl lactate, propylene glycol monomethyl ether acetate. , 3-methoxy-3-methyl-1-butyl acetate, 3-methoxybutyl acetate, methoxybutyl acetate, ethoxyethyl acetate, ethyl cellosolve acetate, Dipropylene glycol methyl ether acetate, propylene glycol diacetate, 1,3-butylene glycol diacetate, cyclohexyl acetate, 1,6-hexanediol diacetate, diethylene glycol monoethyl Ethyl ether acetate, diethylene glycol monobutyl ether acetate, etc., but is not limited thereto. These solvents may be used singly or in combination of two or more.

Among these, since PGMEA has lower risk in the vicinity of room temperature, has a lower risk to the human body, and has good heat drying, it is more preferable to use propylene glycol monomethyl ether acetate (PGMEA). 100% by weight or more, preferably 70% by weight or more, more preferably 90% by weight or more, relative to 100% by weight of the solvent included in the fluorescent dye dispersion for the color conversion layer PGMEA.

Further, other solvents may be included in addition to the ester solvent. The other solvent may include a ketone solvent or the like, but is not limited thereto, and specific examples thereof may include 4-hydroxy-4-methyl-2-pentanone and the like.

The solvent (A-3) may generally be included in an amount of 50% by weight to 95% by weight, preferably 60% by weight to 85% by weight based on the total weight of the fluorescent dye dispersion liquid for a color conversion layer of the present disclosure. When the solvent content is less than 50% by weight, the viscosity rapidly increases to cause a decrease in dispersibility, and when the content is more than 95% by mass, the concentration of the dye is lowered to make it difficult to reach the target color coordinates after the preparation of the resin composition. (A-4) Dispersant

The dispersing agent (A-4) included in the fluorescent dye dispersion for a color conversion layer of the present disclosure is used to well disperse the above fluorescent dye (A-1). Further, by suitably combining the dispersant and the fluorescent dye, since no foreign matter is deposited when the coating film is formed, a fluorescent dye dispersion having high heat resistance and photostability can be obtained.

The dispersing agent is not particularly limited as long as it is used for dispersing a fluorescent dye, and for example, a polymer dispersing agent, a synergistic dispersing agent, or the like can be used.

The polymer dispersant may include an acrylic dispersant, a urethane dispersant, or the like.

As the acrylic dispersant, an acrylic block copolymer can be used. As the acrylic block copolymer, a block copolymer having a block including a basic group or an acidic group or a block not including a basic group and an acidic group can be preferably used. The basic group and the acidic group (hereinafter, these groups are collectively referred to collectively as "colorant adsorbing groups") each function to adsorb the above-mentioned fluorescent dye.

As a block including a colorant adsorption group (hereinafter, this block is sometimes referred to as a "colorant adsorption block"), a monomer having an acidic group and a monomer having a basic group can be used. Blocks formed together.

In the acrylic block copolymer, examples of the monomer having a basic group may include a monomer having a primary amino group, a secondary amino group or a tertiary amino group. Specifically, N,N-dimethylaminoethyl (meth) acrylate, N,N-diethylaminoethyl (meth) acrylate, N,N-dimethyl decylamine, diethyl Acrylamide, dimethylaminopropylmethacrylamide, propylene decylmorpholine, vinylimidazole, 2-vinylpyridine, monomer having an amino group and a caprolactone skeleton, monomer having a glycidyl group For example, a reaction product of glycidyl (meth)acrylate and a compound having one secondary amino group, a reaction product of (meth)acryloylalkyl isocyanate compound and 4-(2-aminomethyl)-pyridine, 4-( 2-aminoethyl)-pyridine, 4-(2-hydroxyethyl)pyridine, 1-(2-aminoethyl)-piperazine, 2-amino-6-methoxybenzothiazole, 1-(2 -hydroxyethylimidazole), N,N-diallylmelamine, N,N-dimethyl-1,3-propanediamine, and the like.

In the acrylic block copolymer, examples of the monomer having an acidic group may include a monomer having a carboxyl group, a sulfonic acid group or a phosphoric acid group.

Examples of the monomer having a carboxyl group may include unsaturated monocarboxylic acid compounds such as acrylic acid, methacrylic acid, and crotonic acid; unsaturated dicarboxylic acid compounds such as maleic acid, fumaric acid, itaconic acid, and a half ester thereof.

Examples of the monomer having a sulfonic acid group may include 2-propenylamine-2-methyl-1-propanesulfonic acid, 2-methylpropenylamine-2-methyl-1-propanesulfonic acid, and styrenesulfonate. Acid, etc.

Examples of the monomer having a phosphoric acid group may include acid phosphonium (meth) acrylate, acid phosphinomethyl (meth) acrylate, and the like.

In the acrylic block copolymer, examples of the component of the block excluding the colorant adsorbing group may include aromatic vinyl compounds such as styrene, α-methylstyrene, vinyltoluene, and benzyl chloride; A saturated alkyl carboxylate such as methyl (meth)acrylate, ethyl (meth)acrylate, and butyl (meth)acrylate; an arylalkyl carboxylate such as benzyl (meth)acrylate; a monomer containing polycaprolactone; a polyalkylene glycol monoester monomer; and the like.

The acrylic block copolymer can be obtained by a polymerization method known in the art such as living anionic polymerization. The acrylic block copolymer preferably has an amine value of from 2 mgKOH/g to 40 mgKOH/g. In the present specification, "amine value" means an amine value per 1 g of solid, and is a potentiometric titration method [for example, COMTITE (AUTO TITRATORCOM-900, BURET B-900, TITSTATION K-900), manufactured by Hiranuma Sangyo Corporation] The value measured with a 0.1 mol/l aqueous hydrochloric acid solution was then converted to potassium hydroxide equivalent.

Commercial products of the acrylic dispersant may include 'Disperbyk (registered trademark)-2000 (amine value 4 mgKOH/g)', 'Disperbyk-2001 (amine value 29 mgKOH/g)' manufactured by BYK-Chemie, Japan, etc., but Not limited to this.

As the urethane-based dispersant, a urethane-based resin having no acid group in the molecule is preferable. The urethane-based resin can be obtained by reacting a compound having one or more hydroxyl groups with a basic compound having a functional group reactive with an isocyanate group of a polyisocyanate compound, however, the method is not limited thereto.

As the polyisocyanate compound used in the preparation of the urethane-based resin, an isocyanate compound having two or more isocyanate groups may be included, and may include an aromatic diisocyanate compound such as 2,4-toluene diisocyanate, 2,6. -toluene diisocyanate, p-xylene diisocyanate, m-xylene diisocyanate, 4,4'-diphenylmethane diisocyanate, 1,5-naphthalene diisocyanate and 3,3'-dimethylbiphenyl- 4,4'-diisocyanate; aliphatic or alicyclic polyisocyanate such as hexamethylene diisocyanate, isophorone diisocyanate, 4,4'-methylene bis(cyclohexyl isocyanate), methylcyclohexane Alkane-2,4 (or 2,6) diisocyanate and 1,3-(isocyanatemethylene)cyclohexane; polyisocyanate having isocyanurate groups derived from diisocyanate (by trimerizing diisocyanate) a polyisocyanate having an isocyanurate group formed by the like; a polyisocyanate obtained by adding a diisocyanate to a polyhydric alcohol; a polyisocyanate obtained by a biuret reaction of a diisocyanate compound; polyisocyanate; Dimer ester; and the like.

Among the polyisocyanate compounds, polyisocyanates having isocyanurate groups derived from diisocyanates are preferred.

As the compound having one or more hydroxyl groups, a polyether compound, a polyester compound, or the like can be included. As the polyether compound, a modified polyalkylene glycol, a modified alkylene glycol, a low molecular monohydric alcohol, or the like can be included.

Specific examples of the polyalkylene glycol may include polyethylene glycol, polypropylene glycol, polytetramethylene glycol, polytetramethylene glycol, and the like. Specific examples of the alkylene glycol may include ethylene glycol, propylene glycol, propylene glycol, tetramethylene glycol, pentamethylene glycol, hexanediol, neopentyl glycol, glycerin, trimethylolpropane, pentaerythritol. , diglycerin, bis(trimethylolpropane), dipentaerythritol, and the like. Specific examples of the low molecular monohydric alcohol may include methanol, ethanol, and the like.

As the modifying material, modified ethylene oxide, modified propylene oxide, modified butylene oxide, and modified tetrahydrofuran may be included.

In the urethane-based resin, the basic group-containing compound is not particularly limited, but is preferably selected from a polyol having an N,N-disubstituted amino group or a heterocyclic nitrogen atom, having an N-disubstituted amino group or a heterocyclic nitrogen atom. At least one of a nitrogen-containing compound in the group consisting of an atomic polythiol and an amine having an N-disubstituted amino group or a heterocyclic nitrogen atom.

As the nitrogen-containing compound, a compound which is usually used in the technical field of a dispersant can be used. These compounds may have a basic group containing an active hydrogen atom of Zerewitinoff and at least one nitrogen atom.

The nitrogen-containing compound may include N,N-dimethyl-1,3-propanediamine, N,N-diethyl-1,4-butanediamine, 2-dimethylaminoethanol, 1-( 2-aminoethyl)-piperazine, 2-(1-pyrrolidinyl)-ethylamine, 4-amino-2-methoxypyrimidine, 4-(2-aminoethyl)-pyridine, 1-(2 -hydroxyethyl)-piperazine, 4-(2-hydroxyethyl)-morpholine, 2-mercaptopyrimidine, 2-mercaptobenzimidazole, 2-amino-6-methoxybenzothiazole, N,N - diallyl-melamine, 3-amino-1,2,4-triazole, 1-(2-hydroxyethyl)-imidazole, 3-mercapto-1,2,4-triazole, and the like. Among these, an amine having a heterocyclic nitrogen atom is preferred.

The synthesis of the urethane-based resin is not particularly limited, and a method known in the art can be used. The urethane-based dispersion resin has an amine value of preferably 2 mgKOH/g to 90 mgKOH/g, more preferably 5 mgKOH/g to 40 mgKOH/g.

Commercial products of the urethane-based dispersing agent may include 'Disperbyk-161 (amine value 11 mgKOH/g, acid value 0 mgKOH/g)', 'Disperbyk-162' (amine value 13 mgKOH/g, acid) manufactured by BYK-Chemie, Japan. Value 0 mgKOH/g)', 'Disperbyk-167 (amine value 13 mgKOH/g, acid value 0 mgKOH/g)', 'Disperbyk-182 (amine value 13 mgKOH/g, acid value 0 mgKOH/g)', etc. .

As the polymer dispersant, an acrylic dispersant can be more preferably used.

As the synergistic dispersant (colorant derivative type dispersant), a phthalocyanine derivative can be used. The commercial product of the synergistic dispersant may include 'Solsperse (registered trademark) 5000 (phthalocyanine derivative)' manufactured by Lubrizol Corporation, and the like.

The weight ratio of the fluorescent dye (A-1) to the dispersing agent (A-4) included in the fluorescent dye dispersion for a color conversion layer of the present disclosure may preferably be from 1:0.05 to 1:0.6.

When a polymer dispersant and a synergistic dispersant are used together, the weight ratio thereof (polymer dispersant/potentiated dispersant) is preferably from 70/30 to 99/1, more preferably from 80/20 to 97/3. More preferably, it is from 85/15 to 95/5. (A-5) a polymer resin

The fluorescent dye dispersion (A) for a color conversion layer of the present disclosure further includes a polymer resin (A-5). As for the type of the fluorescent dye dispersion for the color conversion layer of the present disclosure, the same description as that of the type of the alkali-soluble resin (B) can be used, and the type is not particularly limited. However, it is more preferable to use the same resin as the alkali-soluble resin which will be described later.

It is generally preferred to include 2% by weight to 30% by weight, more preferably 4% by weight to 10% by weight, based on the total weight of the fluorescent dye dispersion liquid for the color conversion layer, of the polymer resin (A-5).

As an embodiment, the fluorescent dye dispersion for the color conversion layer of the present disclosure can be prepared using, for example, the method hereinafter.

Fluorescent dyes, extender pigments, dispersants, polymeric resins, and one or more solvents are introduced into the bottles for mixing. Here, zirconia beads may be additionally added and mixed to uniformly disperse the dye and the pigment. Then, the product was mixed using a paint regulator at 120 ° C or lower. The zirconia beads are removed, and the resultant is filtered with a membrane filter to prepare a fluorescent dye dispersion, however, the method is not limited thereto. Self-emissive photosensitive resin composition for color conversion layer

The present disclosure provides a self-emitting photosensitive resin composition for a color conversion layer, comprising: a fluorescent dye dispersion liquid (A) for a color conversion layer, an alkali-soluble resin (B), a photopolymerizable compound (C), photopolymerization Initiator (D), solvent (E), and high refractive material (F). (A) Fluorescent dye dispersion for a color conversion layer

The fluorescent dye dispersion for the color conversion layer is included as an ingredient in the self-emissive photosensitive resin composition for a color conversion layer of the present disclosure.

The solids in the self-emissive photosensitive resin composition of the present disclosure, expressed by weight fraction, preferably include 0.01% by weight to 50% by weight, more preferably 0.01% by weight to 15% by weight, of the firefly for the color conversion layer Fluorescent dye in a light dye dispersion. When the content is within the above range, the effect of the fluorescence reduction caused by the aggregation of the dye is suppressed, resulting in an advantage of obtaining a preferable fluorescence efficiency. (B) alkali soluble resin

The alkali-soluble resin (B) included in the self-emissive photosensitive resin composition for a color conversion layer of the present disclosure is a component that provides solubility for an alkali developing solution used in a developing process. In other words, the alkali-soluble resin makes the non-exposure unit of the resin layer formed using the self-emissive photosensitive resin composition alkali-soluble, functions as a dispersion medium for the dye, and the like.

In the present disclosure, the alkali-soluble resin is not particularly limited as long as it is a resin which is soluble in the alkali developing solution during the developing step. In general, the acid value can be provided by introducing a carboxyl group into the resin, however, the alkali-soluble resin is not limited thereto.

Examples of the alkali-soluble resin (B) may include a copolymer of a carboxyl group-containing monomer and another monomer copolymerizable with this monomer.

Examples of the carboxyl group-containing monomer include unsaturated carboxylic acids such as unsaturated monocarboxylic acids, unsaturated dicarboxylic acids, unsaturated tricarboxylic acids, and unsaturated polycarboxylic acids. Examples of the unsaturated monocarboxylic acid may include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, cinnamic acid, and the like. Examples of the unsaturated dicarboxylic acid may include maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid and the like. The unsaturated polycarboxylic acid may be an acid anhydride, and specifically, may include maleic anhydride, itaconic anhydride, citraconic anhydride, and the like. Further, the unsaturated polycarboxylic acid may be a mono(2-methylpropenyloxyalkyl)ester thereof, and examples thereof may include mono(2-propenyloxyethyl) succinate, mono (2-A) Acryloxyethyl)succinate, mono(2-propenyloxyethyl)phthalate, mono(2-methylpropenyloxyethyl)phthalate, etc. . Both ends of the unsaturated polycarboxylic acid may be a mono(meth)acrylate of a dicarboxy polymer, and examples thereof may include ω-carboxypolycaprolactone monoacrylate, ω-carboxypolycaprolactone monomethyl group. Acrylate and the like. These carboxyl group-containing monomers may be used singly or as a mixture of two or more.

Examples of the other monomer copolymerizable with the carboxyl group-containing monomer may include an aromatic vinyl compound such as styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-Chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, P-vinylbenzyl methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether and hydrazine; unsaturated carboxylic acid ester For example, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, N-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, methyl 2-hydroxypropyl enoate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, methacrylic acid 3-hydroxybutyl ester, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, A Cyclohexyl acrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, 2-methacrylic acid 2- Phenoxyethyl ester, methoxy diglycol acrylate, methoxy diglycol methacrylate, methoxy triethylene glycol acrylate, methoxy triethylene glycol methacrylate, methoxypropylene glycol Acrylate, methoxypropylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl acrylate, A Dicyclopentadienyl acrylate, gold (meth) acrylate Alkyl ester, norbornete (meth)acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glyceryl monoacrylate and glycerol monomethacrylate Ester; unsaturated aminoalkyl carboxylic acid such as 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, acrylic acid 2-aminopropyl ester, 2-aminopropyl methacrylate, 2-dimethylaminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-amino methacrylate Propyl ester, 3-dimethylaminopropyl acrylate and 3-dimethylaminopropyl methacrylate; glycidyl acrylates such as glycidyl acrylate and glycidyl methacrylate; vinyl carboxylates such as Vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether and allyl glycidyl ether; vinyl cyanide compounds such as propylene Nitrile, methacrylonitrile, α-chloroacrylonitrile and dicyanoethylene Unsaturated guanamine such as acrylamide, methacrylamide, α-chloropropenylamine, N-2-hydroxyethyl decylamine and N-2-hydroxyethyl methacrylamide; unsaturated hydrazine Imines such as maleimide, benzyl maleimide, N-phenylmaleimide and N-cyclohexylmaleimide; aliphatic conjugated dienes such as 1,3-butane Alkene, isoprene and chloroprene; polymers in polystyrene, polymethyl acrylate, polymethyl methacrylate, polybutyl acrylate, polybutyl methacrylate and polyoxyalkylene a macromonomer having a monopropylene fluorenyl group or a monomethacryl fluorenyl group at the end of the molecular chain; and the like.

These monomers may be used singly or as a mixture of two or more. In particular, a bulky monomer such as a monomer having a norbornene-based skeleton, a monomer having an adamantane skeleton, and a monomer having a rosin skeleton are preferable as another monomer copolymerizable with the carboxyl group-containing monomer because they are preferred. The dielectric constant value is often lowered.

The alkali-soluble resin of the present disclosure preferably has an acid value of from 20 mgKOH/g to 200 mgKOH/g based on the solid. When the acid value is within the above range, the solubility of the developing solution is enhanced, the non-exposed unit is easily dissolved, and the sensitivity can be increased, and therefore, the film retention rate can be improved because the pattern in the exposed unit remains during development. Here, the acid value is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of the acrylic polymer, and can usually be obtained by titration with an aqueous potassium hydroxide solution.

Further, the alkali-soluble resin preferably has a polystyrene-converted weight average molecular weight (hereinafter, simply referred to as 'weight average molecular weight') measured by gel permeation chromatography (GPC using tetrahydrofuran as an eluent) at 3,000 to 200,000 The range is more preferably in the range of 5,000 to 100,000. The molecular weight within the above range is preferable because the hardness of the coating film results in high film retention, the solubility of the non-exposed unit in the developing solution is excellent, and the resolution is often enhanced.

The molecular weight distribution [weight average molecular weight (M _w ) / number average molecular weight (M _n )] of the alkali-soluble resin (B) is preferably from 1.5 to 6.0, more preferably from 1.8 to 4.0. The molecular weight distribution [weight average molecular weight (M _w ) / number average molecular weight (M _n )] from 1.5 to 6.0 is preferred because the malleability is excellent.

The base may preferably preferably comprise from 5% by weight to 85% by weight, more preferably from 10% by weight to 70% by weight, more preferably from 20% by weight to 60% by weight, based on the solids of the self-emissive photosensitive resin composition. Soluble resin (B). The content of the alkali-soluble resin (B) is preferably in the above range because the solubility of the developing solution is sufficient, which makes the residue difficult to appear on the substrate because the absence of the non-pixel portion is often advantageous, and since during development The film in the pixel portion of the exposed unit is prevented from being reduced, and the pattern is easily formed. (C) Photopolymerizable compound

The photopolymerizable compound (C) included in the self-emissive photosensitive resin composition for a color conversion layer of the present disclosure is a compound polymerizable by photo-irradiation by a photopolymerization initiator (D) to be described later, and It is not particularly limited as long as it is a compound including an unsaturated group and having photosensitivity. Preferably, a monofunctional monomer, a difunctional monomer, a trifunctional or higher polyfunctional monomer may be used, and one or more monomers selected from them may be used.

Specific examples of the monofunctional monomer may include mercaptophenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, N-vinylpyrrolidone and the like, and its products may include ARONIX M-101 (Toagosei Co., Ltd.), KAYARAD TC-110S (Nippon Kayaku Co., Ltd.), Viscoat 158 (Osaka Yuki Kagaku Kogyo Co., Ltd. And the like, however, the monofunctional monomer is not limited thereto.

Specific examples of the difunctional monomer may include 1,4-butanediol di(meth)acrylic acid, 1,6-hexanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, new Pentanediol di(meth)acrylate, triethylene glycol di(meth)acrylate, bis(acryloxyethyl)ether of bisphenol A, 3-methylpentanediol di(meth)acrylic acid Ester, propylene glycol dimethacrylate, urethane (meth) acrylate, etc., and its products may include ARONIX M-210, M-1100, 1200 (Toagosei Co., Ltd.), KAYARAD HDDA (Nippon Kayaku Co. , Ltd.), Viscoat 260 (Osaka Yuki Kagaku Kogyo Co., Ltd.), AH-600, AT-600 or UA-306H (Kyoeisha Chemical Co., ltd.), etc., however, the bifunctional monomer is not limited thereto. .

Specific examples of the trifunctional or higher polyfunctional monomer may include trimethylolpropane tri(meth)acrylate, ethoxylated trimethylolpropane tri(meth)acrylate, propoxylation Trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol penta (methyl An acrylate, ethoxylated dipentaerythritol hexa(meth) acrylate, propoxylated dipentaerythritol hexa(meth) acrylate, dipentaerythritol hexa (meth) acrylate, etc., and the commodities thereof may include ARONIX M-309, TO-1382 (Toagosei Co., Ltd.), KAYARAD TMPTA, KAYARAD DPHA or KAYARAD DPHA-40H (Nippon Kayaku Co., Ltd.), etc. However, trifunctional or higher polyfunctional singles The body is not limited to this.

Among the above photopolymerizable compounds, a trifunctional or higher polyfunctional monomer is preferably used .

The photopolymerizable compound (C) is preferably included in a weight fraction with respect to the solid of the self-emissive photosensitive resin composition, and is preferably 5% by weight to 50% by weight, more preferably 7% by weight to 45% by weight. The content of the photopolymerizable compound (C) based on 5 to 50% by weight of the above standard is preferable because the strength or flatness of the electrode unit becomes advantageous. (D) Photopolymerization initiator

The photopolymerization initiator (D) included in the self-emissive photosensitive resin composition for a color conversion layer of the present disclosure is capable of causing the light to be emitted by exposure to radiation such as visible light, ultraviolet rays, far ultraviolet rays, electron beams, X-rays, and the like. A compound such as a polymerized radical of the polymerizable compound (C).

In the art, a photopolymerization initiator which is within the range not impairing the object of the present disclosure is generally used, and the type thereof is not particularly limited as long as it is capable of polymerizing the above photopolymerizable compound, and more preferably, phenylethyl group can be used. Ketone compounds.

Examples of the acetophenone-based compound may include an oligomer such as diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2- Hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1-(4-methyl sulphate Phenyl)-2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, 2-hydroxy-2 -Methyl [4-(1-methylvinyl)phenyl]propan-1-one, and preferably, may include 2-benzyl-2-dimethylamino-1-(4-morpholinobenzene Base) butan-1-one and the like.

Further, as the photopolymerization initiator other than the acetophenone-based compound, an active radical generator, a sensitizer, an acid generator, or the like which generates an active radical by photoirradiation can be used.

Specific examples of the active radical generating agent may include a benzoin-based compound, a benzophenone-based compound, a thioxanthone-based compound, and a triazine-based compound.

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

Examples of the benzophenone-based compound may include benzophenone, methyl o-benzimidyl benzoate, 4-phenylbenzophenone, 4-benzylidene-4'-methyl two Phenyl sulfide, 3,3',4,4'-tetrakis(tert-butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, and the like.

Examples of the thioxanthone-based compound may include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1- Chloro-4-propoxythioxanthone and the like.

Examples of the triazine-based compound may include 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis(trichloromethane). 6-(4-methoxynaphthyl)-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-(furan-2-yl)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.

Further, examples of the sensitizer may include 2,4,6-trimethylbenzimidylphosphine oxide, 2,2,-bis(o-chlorophenyl)-4,4',5,5'-tetra Phenyl-1,2'-biimidazole, 10-butyl-2-chloroacridone, 2-ethylhydrazine, 9,10-phenanthrenequinone, camphorquinone, methylphenylglyoxylate, two Titanium compound and the like.

Examples of the acid generator may include a phosphonium salt such as 4-hydroxyphenyldimethylhydrazine p-toluenesulfonate, 4-hydroxyphenyldimethylsulfonium hexafluoroantimonate, 4-ethenyloxyphenyldimethyl Base p-toluenesulfonate, 4-acetoxyphenylmethylbenzylphosphonium hexafluoroantimonate, triphenylsulfonium p-toluenesulfonate, triphenylsulfonium hexafluoroantimonate, diphenyl Iodine p-toluenesulfonate and diphenyliodonium hexafluoroantimonate, nitrobenzyl tosylate, benzoin tosylate, and the like.

Further, among the compounds used as the active radical generator, a compound which generates an acid and an active radical at the same time, for example, a triazine-based photopolymerization initiator is also used as the acid generator.

It is preferable to include photopolymerization initiation of 0.1% by weight to 40% by weight based on 100% by weight of the total solids of the alkali-soluble resin (B) and the photopolymerizable compound (C) in the self-emissive photosensitive resin composition of the present disclosure. The agent (D) is more preferably from 1% by weight to 30% by weight. The photopolymerization initiator content within the above range is preferable because the self-emissive photosensitive resin composition becomes highly sensitive and the strength of the electrode unit formed using this composition and the flatness on the surface of the electrode unit tend to be good.

Meanwhile, the photopolymerization initiator (D) may further include a photopolymerization initiating auxiliary (d1) in order to enhance the sensitivity of the self-emissive photosensitive resin composition of the present disclosure. By the self-emissive photosensitive resin composition of the present disclosure containing a photopolymerization initiation aid, productivity can be improved because the sensitivity is further improved and the polymerization of the photopolymerizable compound is promoted.

The example of the photopolymerization initiation aid (d1) may preferably include a compound selected from one or more of an amine compound, an alkoxy fluorene compound, and a thioxanthone compound.

As the amine compound, an aromatic amine compound can be preferably used, and examples thereof may include fatty amine compounds such as triethanolamine, methyldiethanolamine and triisopropanolamine, methyl 4-dimethylaminobenzoate, 4-di Ethyl methylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N,N- Dimethyl-p-toluidine, 4,4'-bis(dimethylamino)benzophenone (collectively referred to as Michler's ketone), 4,4'-bis(diethylamino)benzophenone, and the like, and Among these, 4,4'-bis(dimethylamino)benzophenone can be more preferably used. Examples of the alkoxy ruthenium compound may include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, 2-ethyl- 9,10-diethoxyanthracene, and the like. Examples of the thioxanthone-based compound may include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1- Chloro-4-propoxythioxanthone and the like. Such a photopolymerization initiation aid may be used singly or in combination of two or more. Examples of commercially available photopolymerization initiation aids may include the product name 'EAB-F' (manufactured by Hodogaya Chemical Co., Ltd.) and the like.

It is preferable to use 10 mol or less of the photopolymerization initiation aid (d1) per 1 mol of the photopolymerization initiator, more preferably 0.01 to 5 mol. The photopolymerization initiation aid content within the above range is preferable because the sensitivity of the self-emissive photosensitive resin composition is further improved and the productivity of the color filter formed using this composition is often improved. (E) solvent

The solvent (E) included in the self-emissive photosensitive resin composition of the present disclosure is not particularly limited, and various organic solvents used in the art can be used. As a specific example of the solvent, one or more types may be selected and used from the ether, acetate, aromatic hydrocarbon, ketone, alcohol, ester, decylamine, etc., however, the solvent is not limited thereto.

Specific examples of the ether solvent may include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether; Alcohol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; and the like.

Specific examples of the acetate-based solvent may include an alkylene glycol alkyl ether acetate such as methyl cellosolve acetate, ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol single Ethyl acetate, propylene glycol monopropyl ether acetate; alkoxyalkyl acetate such as methoxybutyl acetate and methoxypentyl acetate; and the like.

Specific examples of the aromatic hydrocarbon solvent may include benzene, toluene, xylene, mesitylene, and the like.

Specific examples of the ketone solvent may include methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, cyclohexanone, and the like.

Specific examples of the alcohol solvent may include ethanol, isopropanol, n-butanol, n-hexanol, cyclohexanol, ethylene glycol, glycerin, and the like.

Specific examples of the ester solvent may include a cyclic ester such as γ-butyrolactone; ethyl 3-ethoxypropionate, methyl 3-methoxypropionate or the like.

Specific examples of the guanamine-based solvent may include N,N-dimethylformamide, N,N-dimethylacetamide, and the like.

The solvent (E) is preferably an organic solvent having a boiling point of from 100 ° C to 200 ° C, and preferably includes an alkylene alcohol alkyl ether acetate; a ketone; an ester such as 3-ethoxyl, depending on coating properties and drying properties Ethyl propionate and methyl 3-methoxypropionate, and more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate , 3-methoxypropionic acid methyl ester, and the like. These solvents may be used singly or as a mixture of two or more.

It may preferably include 60% by weight to 90% by weight of the solvent (E), more preferably 70% by weight to 85% by weight, based on the total weight of the self-emitting photosensitive resin composition. When the solvent (E) content is within the above range, when using a coating device such as a roll coater, a spin coater, a slit and a spin coater, a slit coater (sometimes referred to as a die coater), and an inkjet coating When it is good, it can provide good coating properties. (F) High refractive material

The high refractive material (F) included in the self-emissive photosensitive resin composition for a color conversion layer of the present disclosure functions to enhance light extraction efficiency caused by a difference in refractive index.

The high refractive index material may be selected from the group consisting of ZnO, ZrO ₂ , BaTiO ₃ , Si, SiC, ZnS, AlN, BN, GaTe, AgI, TiO ₂ , SiON, Ta ₂ O ₅ , Ti ₃ O ₅ or a synthetic product thereof. One or more, but not limited thereto, and may have various shapes or may be used in a dispersed manner.

The content of the high refractive index material is preferably from 0.001% by weight to 50% by weight, more preferably from 0.001% by weight to 10% by weight, based on 100% by weight of the solid in the self-emissive photosensitive resin composition. The content within the above range has an advantage of improving the fluorescence efficiency. (G) additive

The self-emitting photosensitive resin composition for a color conversion layer of the present disclosure may further include additives such as a filler, other polymer compound, an antioxidant, an ultraviolet absorber, a deagglomerating agent, and the like, if necessary.

Specific examples of the filler may include glass, cerium oxide, aluminum oxide, and the like.

Specific examples of the other polymer compound may include a cured resin such as an epoxy resin and a maleidylene resin, and a thermoplastic resin such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, Polyester and polyurethane.

Specific examples of the antioxidant may include 2,2'-thiobis(4-methyl-6-tert-butylphenol), 2,6-di-tert-butyl-4-methylphenol, and the like. Specific examples of the ultraviolet absorber may include 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, alkoxybenzophenone and the like. Specific examples of the deagglomerating agent may include sodium polyacrylate and the like.

One embodiment of the present disclosure provides a method for preparing a self-emissive photosensitive resin composition for a color conversion layer, comprising: 1) preparing a mixed and dispersed fluorescent dye, an extender pigment, a dispersant, a solvent, and a polymer resin a mixture; 2) preparing a fluorescent dye dispersion for the color conversion layer by filtering the mixture of the step 1) using a color filter having a pore diameter of 0.01 μm to 10 μm; and 3) alkali-soluble resin, photopolymerization A compound, a photopolymerization initiator, a solvent, and a high refractive index material are introduced into the prepared fluorescent dye dispersion, and the product is mixed. In the step 1), the mixing may be carried out at 20 ° C to 120 ° C for 5 hours to 48 hours. Here, the zirconia beads may additionally be introduced into the zirconia beads to mix them together to uniformly disperse the dye and the pigment, and preferably remove the zirconia beads after mixing. In the step 2), filtration may be performed using a membrane filter or the like, but is not limited thereto. In the step 3), the fluorescent dye dispersion may be mixed with the solvent in advance when necessary to mix the device, and all or a part of the alkali-soluble resin may be mixed therein. When a part of the alkali-soluble resin is mixed, the remaining alkali-soluble resin, photopolymerizable compound, and photopolymerization initiator, and a high refractive index material are introduced and mixed. If necessary, other compositions and additional solvents may be further added to have a specific concentration to obtain a target self-emitting photosensitive resin composition. Further, the present disclosure provides a self-emitting photosensitive resin composition for a color conversion layer prepared using the above production method. < Color Conversion Filter >

The present disclosure provides a color conversion color filter fabricated using a self-emissive photosensitive resin composition for a color conversion layer. In other words, the present disclosure includes a color conversion color filter fabricated using a self-emitting photosensitive resin composition for a color conversion layer. The color conversion color filter of the present disclosure includes a substrate and a colored pattern prepared on the substrate using the self-emissive photosensitive resin composition for a color conversion layer of the present disclosure. The substrate can be a transparent material having sufficient strength and load carrying capacity for the color conversion color filter. Preferably, glass having excellent chemical stability and high strength can be used. The method for preparing the color conversion color filter can use a method known in the art. < display device >

Further, the present disclosure provides a display device including a color conversion color filter. Specific examples of the display device may include display devices such as a liquid crystal display (liquid crystal display device: LCD), an organic EL display (organic EL display device), a liquid crystal projector, a display device for a game machine, and a portable device such as a mobile phone The display device, the display device for the digital camera, and the display device for car navigation are not limited thereto.

In addition to providing a color conversion color filter, the display device of the present disclosure can be fabricated using methods well known in the art.

Hereinafter, the present disclosure will be described in detail with reference to the embodiments and comparative examples. However, the following examples are for illustrative purposes only, and the present disclosure is not limited to the following examples, and may be variously modified and changed within the scope of the present disclosure. The scope of the present disclosure is determined by the technical idea of the scope of the patent application to be described hereinafter. Synthesis <Synthesis Example> Example 1. Synthesis of alkali-soluble resin (B-1) is

A flask equipped with a stirrer, a thermostat, a dropping set and a nitrogen introducing tube was prepared while introducing, stirring and mixing 74.8 g (0.20 mol) of maleimide, 43.2 g (0.30 mol) of acrylic acid, and 118.0 g ( 0.50 mol) vinyl toluene, 4 g tert-butyl peroxy-2-ethylhexanoate and 40 g propylene glycol monomethyl ether acetate (PGMEA) to prepare a monomer dropping kit, and by introducing, stirring and mixing 6 g N-dodecanediol and 24 g PGMEA were used to prepare a chain transfer agent drop kit. Then, 395 g of PGMEA was introduced into the flask, and after the atmosphere in the flask was replaced with nitrogen by air, the temperature of the flask was raised to 90 ° C while stirring. Subsequently, the monomer and chain transfer agent are initially added dropwise from the drip pack. The dropwise addition was carried out for two hours while maintaining the temperature at 90 ° C, and after one hour, the temperature was raised to 110 ° C, maintained at this temperature for 3 hours, and oxygen / nitrogen = 5 / 95 (v /v) The bubbling of the mixed gas is started by introducing a gas introduction pipe. Subsequently, 28.4 g (0.10 mol) of glycidyl methacrylate (33 mol% relative to the carboxyl group of the acrylic acid used in the reaction), 0.4 g of 2,2'-methylenebis(4-methyl-6-) tert-Butylphenol) and 0.8 g of triethylamine were introduced into the flask, and the resultant was continuously reacted at 110 ° C for 8 hours, and then, Resin B-1 having a solid acid ester of 70 mg KOH / g was obtained. The polystyrene conversion weight average molecular weight measured by GPC was 16,000, and the molecular weight distribution (Mw/Mn) was 2.3. Equipment: HLC-8120GPC (manufactured by Tosoh Corporation) Column: TSK-GELG4000HXL + TSK-GELG2000HXL (series connection) Column temperature: 40°C Mobile phase solvent: Tetrahydrofuran flow rate: 1.0 ml/minute Injection volume: 50 μl Detector: RI Determines the concentration of the sample: 0.6% by mass (solvent = tetrahydrofuran) Standard material for calibration: TSK standard polystyrene F-40, F-4, F-1, A-2500, A-500 (by Tosoh Corporation) The ratio of the weight average molecular weight to the number average molecular weight obtained above was used as the molecular weight distribution (Mw/Mn). Synthesis Example 2 fluorochrome dispersion (A1) is used for color conversion layer

Fluorescent dye (A1): Luma near yellow 083 0.48 parts by weight of extender pigment (A2): Barium sulfate 2.88 parts by weight of acrylic dispersant [Disperbyk (registered trademark) 2000: manufactured by BYK-Chemie, Japan] 3.84 parts by weight of polymer Resin B-1 (Resin of Synthesis Example 1) 2.88 parts by weight of solvent 1: Propylene glycol monomethyl ether acetate 55.04 parts by weight of solvent 2: 4-hydroxy-4-methyl-2-pentanone 5.76 parts by weight with 0.2 mm 360 parts by weight of the zirconia beads of the diameter were introduced into a salad dressing bottle having a volume of 140 ml, and the resultant was mixed at 60 ° C for 10 hours using a paint conditioner to perform dispersion. Then, the zirconia beads were removed and the membrane filter was filtered to have a pore diameter of 1.0 μm to obtain a fluorescent dye dispersion A1. Synthesis Example 3. fluorochrome dispersion liquid (A2) for the color conversion layer

The fluorescent dye dispersion A2 was obtained in the same manner as the synthesis method of the fluorescent dye dispersion A1 of Synthesis Example 2 except that coumarin 6 was used as a fluorescent dye. Synthesis Example 4. fluorochrome dispersion (A3) for the color conversion layer

The fluorescent dye dispersion A3 was obtained in the same manner as in the synthesis of the fluorescent dye dispersion A1 of Synthesis Example 2 except that Rhodamine B was used as a fluorescent dye. Manufacture of self-emissive photosensitive resin composition for color conversion layer

A self-emissive photosensitive resin composition for a color conversion layer having the composition and content listed in Table 1 below was prepared. However, the contents of the fluorescent dye dispersions A1 to A3 were converted into the fluorescent dye contents included in the respective dye dispersions, and are listed in Table 1 below. 【Table 1】 < Preparation Example > Production of Color Conversion Filter ( Color Conversion Electrode ; Glass Electrode )

A color conversion color filter was prepared using the self-emissive photosensitive resin compositions of Examples 1 to 3 and Comparative Examples 1 to 3. In other words, each of the self-emitting photosensitive resin compositions was applied onto a glass substrate by a spin coating method, and the resultant was placed on a hot plate and held at 100 ° C for 3 minutes to form a film. Subsequently, ultraviolet rays are irradiated on the film. Here, an ultrahigh pressure mercury lamp manufactured by USHIO, Inc. (product name USH-250D) was used to irradiate ultraviolet rays with an exposure (365 mm) of 40 mJ/cm ² under an air atmosphere, and a special filter was not used. The film irradiated with ultraviolet rays was developed using a jet developing device for 60 seconds in a developing solution of an aqueous KOH solution having a pH of 12.5, and then the resultant was heated at 220 ° C for 20 minutes in a heating oven to form a pattern. The film thickness of the self-emitting color conversion layer pattern manufactured above was 3.0 μm. The thickness of the color conversion layer can be controlled differently up to 500 μm. < Test Example > Test Example 1. Measurement of Luminance Intensity

In the self-emission color pattern having a thickness of 3.0 μm manufactured using the self-emissive photosensitive resin compositions of Examples 1 to 3 and Comparative Examples 1 to 3, a quantum efficiency measuring device (QE-1000, by Otsuka Electronics Co., Ltd.) was used. Manufacture) The photoluminescence (PL) of each coated substrate was measured, and the luminescence intensity is listed in Table 2 below. When the measured luminous intensity is increased, it is considered that excellent luminance performance is obtained. 【Table 2】

As shown in Table 2, the fluorescent dye was uniformly dispersed in Examples 1 to 3, and the measurement of the fluorescence intensity was made easy, and it was confirmed that excellent fluorescence intensity was exhibited.

Meanwhile, in Comparative Examples 1 to 3, it was confirmed that the fluorescence intensity could not be measured because the fluorescent dye was not dissolved.

The fluorescent dye dispersion for a color conversion layer of the present disclosure uses a dye in a dispersed form, and therefore, a fluorescent dye having excellent fluorescence efficiency can be widely used without considering the dye in a solvent (especially capable of being in the process) Solubility in the solvent used). Further, a color conversion color filter formed of a resin composition for a color conversion layer prepared using a fluorescent dye dispersion can exhibit excellent brightness and brightness efficiency.

Claims (11)

A fluorescent dye dispersion for a color conversion layer, comprising: a fluorescent dye; an extender pigment; a solvent; a dispersant; and a polymer resin, wherein the fluorescent dye is dispersed in the solvent by the dispersant . The fluorescent dye dispersion for a color conversion layer according to claim 1, comprising: 0.1% by weight to 30% by weight based on the total weight of the fluorescent dye dispersion for the color conversion layer a fluorescent dye; 50% by weight to 95% by weight of the solvent; and 2% by weight to 30% by weight of the polymer resin. The fluorescent dye dispersion for a color conversion layer according to claim 1, wherein a weight ratio of the fluorescent dye to the extender pigment is from 1:99 to 99:1, and the fluorescent dye is The weight ratio of the dispersant is from 1:0.05 to 1:0.6. A self-emitting photosensitive resin composition for a color conversion layer, comprising: a fluorescent dye dispersion for a color conversion layer according to claim 1; an alkali-soluble resin; a photopolymerizable compound; a photopolymerization initiator; ; and high refractive materials. The self-emitting photosensitive resin composition for a color conversion layer according to claim 4, comprising: 0.01% by weight to 50% by weight of the fluorescent light for the color conversion layer with respect to solids in the composition The fluorescent dye in the dye dispersion; 5 to 85% by weight of the alkali-soluble resin; 5 to 50% by weight of the photopolymerizable compound; and 0.001 to 50% by weight a high refractive material, 100% by weight, based on 100% by weight of the total solids of the alkali-soluble resin and the photopolymerizable compound, 0.1% by weight to 40% by weight of the photopolymerization initiator, and relative to the composition The total weight, 60% by weight to 90% by weight of the solvent. The self-emissive photosensitive resin composition for a color conversion layer according to claim 4, wherein the high refractive material is selected from the group consisting of ZnO, ZrO ₂ , BaTiO ₃ , Si, SiC, ZnS, AlN, BN, GaTe, AgI One or more of TiO ₂ , SiON, Ta ₂ O ₅ , Ti ₃ O ₅ and synthetic products thereof. A method for preparing a self-emissive photosensitive resin composition for a color conversion layer, comprising: 1) preparing a mixture in which a fluorescent dye, an extender pigment, a dispersant, a solvent, and a polymer resin are mixed and dispersed; 2) having a filter having a pore diameter of 0.01 μm to 10 μm filters the mixture of the step 1) to prepare a fluorescent dye dispersion for a color conversion layer; and 3) an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, A solvent and a high refractive material are introduced into the prepared fluorescent dye dispersion, and the product is mixed. A method for preparing a self-emissive photosensitive resin composition for a color conversion layer according to claim 7, wherein the high refractive material is selected from the group consisting of ZnO, ZrO ₂ , BaTiO ₃ , Si, SiC, ZnS, AlN, One or more of BN, GaTe, AgI, TiO ₂ , SiON, Ta ₂ O ₅ , Ti ₃ O ₅ and synthetic products thereof. A self-emissive photosensitive resin composition for a color conversion layer prepared by the production method as described in claim 7 was used. A color conversion color filter manufactured using the self-emitting photosensitive resin composition as described in claim 4 is used. An image display device comprising the color conversion color filter of claim 10.