KR20190108781A - Yellow curableresin composition, color filter and display device having the same - Google Patents

Abstract

The present invention relates to a yellow curable resin composition and a color filter and an image display device produced by using the same. The yellow curable resin composition includes a yellow colorant, alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent wherein the yellow colorant has a transmittance (T_λ) of 50 to 60% at a wavelength of 470 to 510 nm and satisfies a transmission characteristic of equation 1, T_(λ-20 nm) < 2%, T_(λ+20 nm) >= 90%, and the alkali-soluble resin includes a repeating unit represented by chemical formula 1. Therefore, the yellow curable resin composition can manufacture a color filter with excellent color reproducibility and light efficiency (photo retention). In chemical formula 1, each R_1 is independently a hydrogen or methyl group and each R_2 is independently a hydrogen or methyl group.

Description

Yellow curable resin composition, color filter and image display device manufactured using the same {YELLOW CURABLERESIN COMPOSITION, COLOR FILTER AND DISPLAY DEVICE HAVING THE SAME}

The present invention relates to a yellow curable resin composition, a color filter manufactured using the same, and an image display device.

The color filter is a thin film type optical component that extracts three colors of red, green, and blue from white light and makes them possible in fine pixel units.

The color filter includes a black matrix layer formed in a predetermined pattern on a transparent substrate for shielding a boundary portion between each pixel, and a plurality of colors (typically, red (R) and green (G) to form each pixel. And a pixel portion in which three primary colors of blue (B) are arranged in a predetermined order.

In general, color filters can be produced by coating three or more colors on a transparent substrate by dyeing, electrodeposition, printing, pigment dispersion, etc. Recently, the pigment dispersion method using a pigment-dispersible photosensitive resin has been mainly used. Achieve.

Among them, the pigment dispersion method coats a photosensitive resin composition including a colorant and an alkali-soluble resin, a photopolymerization monomer, a photopolymerization initiator, an epoxy resin, a solvent, and other additives on a transparent substrate provided with a black matrix, and forms a pattern in a form to be formed. After exposure, a method of forming a colored thin film by repeating a series of processes of removing a non-exposed portion with a solvent and thermally curing it is actively applied to manufacturing LCDs of mobile phones, laptops, monitors, TVs and the like.

In recent years, in the photosensitive resin composition for color filters using a pigment dispersion method having various advantages, not only excellent pattern characteristics but also high color reproducibility and improved performance such as high brightness and high contrast ratio are required.

However, color reproduction is realized by the light emitted from the light source passing through the color filter. In this process, some of the light is absorbed by the color filter, and thus the light efficiency is lowered. There are fundamental limitations.

As a solution to this problem, a color filter using a quantum dot photosensitive resin composition has been proposed.

In this regard, Korean Patent Publication No. 2007-0094679 suggests that color reproducibility can be improved by including a color filter layer formed of quantum dots, and Korean Patent Publication No. 2009-0036373 discloses a conventional color filter. By replacing with a light emitting layer made of a quantum dot phosphor has proposed a technology for improving the display quality by improving the luminous efficiency.

If the quantum dot is used as the color filter of the light emitting material, the emission waveform can be narrowed, has a high color rendering ability that can not be realized in the pigment, and has excellent luminance characteristics. However, due to the low stability of the quantum dots performed in the color filter manufacturing, crystals are generated on the surface, thereby causing a problem in that the luminous efficiency of the quantum dots is greatly decreased.

In particular, an image display device equipped with a quantum dot color filter uses blue light as a light source, wherein the blue light used is mixed with light emitted from quantum dots in the red, green, and blue pixel layers. That is, there is no problem in the case of the blue pixel layer, but it is difficult to emit pure red and green in the case of the red and green pixel layers. For example, in the case of the green pixel layer, the emission peak appears at 500 to 550 nm by the quantum dot, but when the blue light is used, the peak due to the blue light at 380 to 400 nm appears simultaneously, resulting in lowering the color purity of the color filter.

Therefore, there is a limit in displaying a desired color reproducibly, which has a disadvantage in that image quality is deteriorated.

Republic of Korea Patent Publication No. 2007-0094679 (2007.09.21.) Republic of Korea Patent Publication No. 2009-0036373 (2009.04.14.)

An object of the present invention is to provide a yellow curable resin composition excellent in color reproducibility and light efficiency (photo retention), a color filter and an image display device manufactured using the same.

The yellow curable resin composition of the present invention for achieving the above object comprises a yellow colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent, wherein the yellow colorant has a transmittance (T _λ ) of 50 at a wavelength of 470 nm to 510 nm. To 60%, satisfying the permeation characteristics of the following formula (1), the alkali-soluble resin is characterized in that it comprises a repeating unit represented by the formula (1).

[Equation 1]

T _{(λ-20 nm)} <2%

T _{(λ + 20 nm)} ≥ 90%

[Formula 1]

(In Formula 1,

Each R ₁ is independently hydrogen or a methyl group,

Each R ₂ is independently hydrogen or a methyl group).

Moreover, the color filter which concerns on this invention is characterized by including the hardened | cured material of the yellow curable resin composition mentioned above.

In addition, the image display apparatus according to the present invention is characterized by including the above-described color filter.

 The yellow curable resin composition of this invention has the advantage that it is excellent in color reproducibility and light efficiency (photo retention).

The color filter of this invention has the same advantages as the above by including the hardened | cured material of the yellow curable resin composition mentioned above.

The image display device of the present invention has the same advantages as above by including the cured product of the above-mentioned yellow curable resin composition.

1 is a cross-sectional view showing a color filter according to an embodiment of the present invention.
2 is a cross-sectional view illustrating an arrangement of a color filter for a light source according to an embodiment of the present invention.

In the present invention, when a member is located "on" another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

In the present invention, when a part is said to "include" a certain component, it means that it may further include other components, without excluding the other components unless otherwise stated.

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

<Yellow curable resin composition>

The yellow curable resin composition according to one embodiment of the present invention comprises a yellow colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent, wherein the yellow colorant has a transmittance (T _λ ) of 50 to 60 at a wavelength of 470 nm to 510 nm. %, Satisfying the transmission characteristics of the following formula (1), wherein the alkali-soluble resin comprises a repeating unit represented by the formula (1), thereby producing a color filter excellent in color reproduction and light efficiency (photo retention) There is an advantage to this.

[Equation 1]

T _{(λ-20 nm)} <2%

T _{(λ + 20 nm)} ≥ 90%

[Formula 1]

(In Formula 1,

Each R ₁ is independently hydrogen or a methyl group,

Each R ₂ is independently hydrogen or a methyl group).

Yellow colorant

The yellow curable resin composition according to one aspect of the present invention includes a yellow colorant.

In the case of a color filter using a quantum dot, unlike a color filter including a pigment, the color filter is a material that emits light by itself, and a self-luminous pixel layer is formed on the pixel area to emit red, green, and blue colors. The self-luminous pixel layer has a self-luminous property that absorbs irradiated light and emits red light, blue light, and green light by itself. That is, when red quantum dots, blue quantum dots, and green quantum dots are irradiated with light, red light is emitted at 600 to 700 nm, green light is emitted at 490 to 590 nm, and blue light is emitted at 400 to 480 nm to realize full color. In this case, the light source of the image display apparatus equipped with the color filter uses blue light. When the light emission spectrum of the red to green self-luminous pixel layer is observed, the light emission spectrum of blue light is present at 400 to 480 nm due to the blue light. Mixing of the self-luminous pixel layer occurs, which seriously occurs in the red to green pixel layer.

In order to prevent the above problems, by placing a yellow coating layer, which is a cured product of a yellow curable resin composition containing a yellow colorant, on the red to green pixel layers, only green and red and blue colors are mixed in the green pixel layer where green and blue are mixed. Only the red color is displayed on the mixed red pixel layer, and as a result, light of pure green to pure red can be extracted, thereby improving color purity and light efficiency of self-emitting light.

As a spectral characteristic, the yellow coloring agent of this invention needs to absorb the low wavelength area | region (about 330-550 nm) in the visible region of 380-780 nm of wavelength ranges, and it is necessary to transmit or reflect the light of another area | region. In this case, the transmittance in the transmission spectrum of 470 to 510 nm is used to satisfy a specific range, but the transmittance at ± 20 nm of the above range is controlled.

In the case of red, the green light emitting layer has a phenomenon in which the wavelengths of blue and green overlap in the 470 to 510 nm region. In this area, the green emitted light minimizes the loss and the blue light source needs to be blocked as much as possible. In order to satisfy the transmission and blocking characteristics at the same time, the light spectroscopy (blocking / transmission) in the area of 470 nm to 510 nm is required. It must be done clearly.

Therefore, the greater the difference in transmittance in the ± 20 nm region with respect to the center wavelength, the more pronounced the spectral becomes. The present invention uses a yellow colorant having a controlled transmittance at ± 20 nm.

If it is limited to the material of the specific yellow colorant itself, it may be impossible or impossible to use depending on the method of atomizing the yellow colorant or improving the color purity, and thus the reproducibility may be lowered. In order to secure the effect, the transmittance (T _lambda ) in the wavelength of 470nm to 510nm is 50 to 60%, it characterized by satisfying the transmission characteristics of the following formula (1).

[Equation 1]

T _{(λ-20 nm)} <2%

T _{(λ + 20 nm)} ≥ 90%

(In Equation 1, T is transmittance (%), and λ means a wavelength selected from 470 nm to 510 nm).

In Equation 1, a yellow colorant whose transmittance is less than the above range cannot sufficiently prevent the influence of blue light, and on the contrary, when the above-mentioned range is exceeded, a yellow peak also appears on the color filter due to a decrease in the transmittance of emitted light. Rather deteriorates.

At this time, the measuring method of the said transmittance is not specifically limited. For example, the method of measuring a transmission spectrum with respect to the aqueous solution system of a yellow curable resin composition, or the dispersion liquid of an organic solvent system, the method of measuring about what apply | coated to glass, a transparent electrode, or a film, etc. are mentioned.

The specific kind of the yellow colorant can be used without particular limitation as long as it satisfies the above conditions. Specifically as said yellow coloring agent, a yellow conventional well-known coloring agent can be used, You may use any of a pigment, dye, and a pigment. More specifically, the following color index (C.I .; issued by The Society of Dyers and Colorists) numbers is given. However, in view of reducing environmental load and impact on the human body, it may be preferable to be a colorant containing no halogen.

Monoazo pigments: pigment yellow 1, 2, 5, 8, 105, 120, 150, 168, 182, 183, 190;

Pyrazolone azo pigments: pigment yellow 10;

Diazo pigments: Pigment Yellow 12, 16, 63, 83, 126, 127, 128, 152, 170, 188;

Azomethine-based pigments: Pigment Yellow 101, 129;

Anthraquinone pigments: pigment yellow 108, 147, 193, 197, 199, 202;

Isoindolinone pigments: pigment yellow 109, 110, 139, 173, 185;

Quinoline pigments: pigment yellow 115;

Quinophthalone pigments: pigment yellow 138;

Polycyclic pigments: pigment yellow 148;

Dioxime pigments: pigment yellow 153;

Benzimidazolone pigments: pigment yellow 154, 175, 180, 181;

Heterocyclic pigments: pigment yellow 192;

Perinone pigments: pigment yellow 196;

Pigment Yellow 231

Inorganic pigments: pigments 31, 32, 30, 119, 157, 162, 184;

Cyanine pigments; Xanthene-based pigments, Merocyanine-based pigments; Dipyrin-based pigments; Arylmethine pigments; Acridine pigments; Coumarin-based pigments; Oxazine-based pigments; Tetrapyrrole (Tetrapyrrole) pigment may be used, but is not limited thereto.

These pigments may be optionally treated with rosin treatment, surface treatment with pigment derivatives having acid groups or basic groups introduced therein, surface graft treatment with polymer compounds and the like, fine granulation treatment with sulfuric acid, or washing with organic solvents or water. The processing or the like may be performed.

According to one embodiment of the invention, the yellow colorant is C.I. Pigment Yellow 138, C.I. Pigment Yellow 185 and C.I. Pigment Yellow 231 may include one or more selected from the group consisting of, in which case color development may be further improved.

According to one embodiment of the invention, the yellow colorant may be used in 5 to 60% by weight, preferably 10 to 45% by weight relative to 100% by weight of the total solids in the total yellow curable resin composition. If the content is less than the above range, it is difficult to expect the effect of improving color purity and light efficiency as described above due to the blocking of blue light, and on the contrary, even if the content exceeds the above range, there is no significant effect increase and thus it is uneconomical, within the above range. It is preferable to use suitably.

The yellow colorant in the present invention can be used together with a dispersant and a dispersing aid if necessary.

As the dispersant, for example, suitable dispersants such as cationic, anionic, and nonionic systems can be used, but a polymer dispersant is preferable. Specifically, acrylic copolymers, polyurethanes, polyesters, polyethyleneimines, polyallylamines, etc. may be mentioned, but are not limited thereto. Such dispersants may be obtained commercially, for example, as an acrylic copolymer, DisperBYK-2000, DisperBYK-2001, BYK-LPN6919, BYK-LPN21116 (above, manufactured by BYK), Solsperse 5000 (manufactured by Lubrizol) ), Polyurethane DisperBYK-161, DisperBYK-162, DisperBYK-163, DisperBYK-165, DisperBYK-167, DisperBYK-170, DisperBYK-182 (above, manufactured by BYK Corporation), Solsperse 76500 (manufactured by Lubrizol) ), Solsperse 24000 (manufactured by Lubrizol) as polyethyleneimine, azisper PB821, azisper PB822, azisper PB880 (manufactured by Ajinomoto Fine Techno Co., Ltd.), and the like, but are not limited thereto.

Examples of the dispersion aid include pigment derivatives, and specific examples thereof include copper phthalocyanine, diketopyrrolopyrrole, and sulfonic acid derivatives of quinophthalone, but are not limited thereto.

The said dispersing agent can be used individually or in mixture of 2 or more types. The content of the dispersant may be usually 1 part by weight or less, preferably 0.1 to 0.7 parts by weight, and more preferably 0.05 to 0.5 parts by weight, based on 1 part by weight of the yellow colorant included. When content of the said dispersing agent is out of the said range, there exists a possibility that developability etc. may fall.

Alkali soluble resin

The yellow curable resin composition according to one embodiment of the present invention includes an alkali soluble resin, and the alkali soluble resin includes a repeating unit represented by Chemical Formula 1.

Alkali-soluble resin of the present invention by including the repeating unit represented by the formula (1), there is an effect of suppressing the quantum dot is quenched by the outgas generated in the heat treatment step of the color filter manufacturing process, high color reproduction and light efficiency and light There is an advantage that the retention rate is improved.

The acid value of the alkali-soluble resin including the repeating unit represented by Chemical Formula 1 may be 20 to 200 (mgKOH / g). At this time, an acid value is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of acrylic polymers, and participates in solubility. If the acid value of the alkali-soluble resin is less than the above range it may be difficult to secure a sufficient development speed, on the contrary, if the acid value of the alkali-soluble resin exceeds the above range, the adhesion to the substrate is reduced, the short circuit of the pattern is likely to occur and the storage stability of the entire composition is reduced The problem of an increase in viscosity may occur.

In addition, the alkali-soluble resin may be a weight average molecular weight of 3,000 to 200,000 Da, preferably 5,000 to 100,000 Da, the molecular weight distribution is 1.5 to 6.0, preferably 1.8 to 4.0 to be used directly polymerized or purchased and used Can be. Alkali-soluble resin having a molecular weight and a molecular weight distribution in the above range has the advantage of improving the hardness, high residual film ratio, as well as solubility of non-exposed portions in the developing solution and improving the resolution.

The alkali-soluble resin may be prepared by copolymerizing a monomer having an unsaturated bond with a carboxyl group together with a repeating unit of Formula 1, and a monomer having an unsaturated bond copolymerizable therewith, and the compound including the unsaturated bond may have a double bond. The compound is not limited.

Specific examples of the monomer having a carboxyl group and an unsaturated bond include monocarboxylic acids such as acrylic acid, methacrylic acid and crotonic acid; Dicarboxylic acids such as fumaric acid, mesaconic acid and itaconic acid; And anhydrides of these dicarboxylic acids; * mono (meth) acrylates of polymers having a carboxyl group and a hydroxyl group at both terminals such as jcarboxypolycaprolactone mono (meth) acrylate, and the like, but are not limited thereto.

More specifically, acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride, fumaric acid, or maleic acid alkyl ester may be used, wherein the maleic acid alkyl ester may be monomethyl maleic acid, ethyl maleic acid, n-propyl maleic acid, isopropyl maleic acid, n-butyl maleic acid, n-hexyl maleic acid, n-octyl maleic acid, 2-ethylhexyl maleic acid, n-nonyl maleic acid or n-dodecyl maleic acid, etc. are mentioned.

The monomer which has a carboxyl group and unsaturated bond mentioned above can be used individually or in combination of 2 types or more, respectively.

The copolymerizable monomers include aromatic vinyl compounds, unsaturated carboxylic acid ester compounds, unsaturated carboxylic acid aminoalkyl ester compounds, unsaturated carboxylic acid glycidyl ester compounds, carboxylic acid vinyl ester compounds, unsaturated ether compounds, and vinyl cyanide. Compounds, unsaturated imides, aliphatic conjugated diene compounds, macromonomers having monoacryloyl groups or monomethacryloyl groups at the ends of the molecular chain, bulky monomers, and combinations thereof may be selected. It is not limited to this.

Specifically, the copolymerizable monomers are styrene, vinyltoluene, * j methyl styrene, p-chlorostyrene, o-methoxy styrene, m-methoxy styrene, p-methoxy styrene, o-vinyl benzyl methyl ether, m Aromatic vinyl compounds such as -vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether or p-vinyl benzyl glycidyl ether; Methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, i-propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, alkyl (meth) acrylates such as sec-butyl (meth) acrylate or t-butyl (meth) acrylate; Cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0. Alicyclic (meth) acrylates such as ^2.6 ] decane-8-yl (meth) acrylate, 2-dicyclopentanyloxyethyl (meth) acrylate or isobornyl (meth) acrylate; Aryl (meth) acrylates such as phenyl (meth) acrylate or benzyl (meth) acrylate; Hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate or 2-hydroxypropyl (meth) acrylate; N-cyclohexylmaleimide, N-benzylmaleimide, N-phenylmaleimide, No-hydroxyphenylmaleimide, Nm-hydroxyphenylmaleimide, Np-hydroxyphenylmaleimide, No-methylphenylmaleimide, Nm N-substituted maleimide compounds such as -methylphenylmaleimide, Np-methylphenylmaleimide, No-methoxyphenylmaleimide, Nm-methoxyphenylmaleimide, and Np-methoxyphenylmaleimide; Unsaturated amide compounds such as (meth) acrylamide and N, N'-dimethyl (meth) acrylamide; 3- (methacryloyloxymethyl) oxetane, 3- (methacryloyloxymethyl) -3-ethyloxetane, 3- (methacryloyloxymethyl) -2-trifluoromethyloxetane, 3- (methacryloyloxymethyl) -2-phenyloxetane, 2- (methacryloyloxymethyl) oxetane or 2- (methacryloyloxymethyl) -4-trifluoromethyloxetane, etc. Unsaturated oxetane compounds, and the like, but are not limited thereto, and these may be used alone or in combination of two or more thereof.

According to one embodiment of the invention, the alkali-soluble resin is 3 to 60% by weight, preferably 5 to 60% by weight, more preferably 10 to 100% by weight of the total solid content of the yellow curable resin composition comprising the same To 45% by weight. When the content of the alkali-soluble resin is included in the above range, there is an advantage in forming a yellow coating layer, the reduction of the film portion of the exposed portion during development is prevented, there is an advantage that the omission of the non-pixel portion is good, color reproducibility And there is an advantage that the light efficiency is further improved.

Photopolymerizable  compound

The yellow curable resin composition according to one aspect of the present invention contains a photopolymerizable compound.

The photopolymerizable compound is not particularly limited as long as it is a compound that can be polymerized by the action of a photopolymerization initiator to be described later. Preferably, a monofunctional photopolymerizable compound, a bifunctional photopolymerizable compound, or a trifunctional or higher polyfunctional photopolymerizable compound is used. Can be mentioned.

Specific examples of the monofunctional photopolymerizable compound include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, and N-. Vinylpyrrolidone, and the like, and commercially available products include Aronix M-101 (Doagosei), KAYARAD TC-110S (Nippon Kayaku), and Biscot 158 (Osaka Yuki Kagaku Kogyo).

Specific examples of the bifunctional photopolymerizable compound include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acryl And bis (acryloyloxyethyl) ether of bisphenol A, 3-methylpentanediol di (meth) acrylate, and the like, and commercially available products such as Aronix M-210, M-1100, and M-1200 (Doagosei) ), KAYARAD HDDA (Nippon Kayaku), Biscot 260 (Osaka Yuki Kagaku High School), AH-600, AT-600 or UA-306H (Kyoeisha Chemical Co., Ltd.).

Specific examples of the trifunctional or higher polyfunctional photopolymerizable compound include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, and propoxylated trimethylolpropane tri (meth) acrylate. , Pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, tipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxysilane Tied dipentaerythritol hexa (meth) acrylate, dipentaerythritol hexa (meth) acrylate, etc. are commercially available products such as Aronix M-309, TO-1382 (Doagosei), KAYARAD TMPTA, KAYARAD DPHA, or KAYARAD. DPHA-40H (Nipbon Kayaku) etc. are mentioned.

Among the photopolymerizable compounds exemplified above, trifunctional or more than trifunctional (meth) acrylic acid esters and urethane (meth) acrylates may be particularly preferable in terms of excellent polymerizability and improving strength.

The photopolymerizable compounds exemplified above may be used alone or in combination of two or more thereof.

According to one embodiment of the present invention, the photopolymerizable compound is 5 to 70% by weight, preferably 10 to 60% by weight, more preferably 15 to 50, based on 100% by weight of the total solids in the yellow curable resin composition. It may be included in weight percent. When the photopolymerizable compound is included in the above range, there is an advantage that the intensity and smoothness of the pixel portion are good.

Photopolymerization Initiator

The yellow curable resin composition according to one embodiment of the present invention includes a photopolymerization initiator.

The photopolymerization initiator can be used without particular limitation as long as it can polymerize the photopolymerizable compound described above. Specifically, the group consisting of acetophenone-based compounds, benzophenone-based compounds, triazine-based compounds, biimidazole-based compounds, oxime compounds and thioxanthone-based compounds in terms of polymerization properties, starting efficiency, absorption wavelength, availability, or price. Preference is given to using at least one compound selected from.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyl dimethyl ketal, 2-hydroxy-1- [4- (2-hydroxy Hydroxyethoxy) phenyl] -2-methylpropan-1-one, 1-hydroxycyclohexylphenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1 -One or 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one, and the like.

As said benzophenone type compound, benzophenone, methyl 0- benzoyl benzoate, 4-phenylbenzo phenone, 4-benzoyl-4'- methyl diphenyl sulfide, 3,3 ', 4, 4'- tetra ( tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, etc. are mentioned.

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

Specific examples of the biimidazole compound include 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3-dichloro Phenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2-chlorophenyl) -4,4', 5,5'-tetra (alkoxyphenyl) biimidazole , 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) biimidazole, 2,2-bis (2,6-dichlorophenyl) -4, The imidazole compound etc. which the phenyl group of a 4 ', 5,5'- tetraphenyl- 1,2'-biimidazole or a 4,4', 5,5 'position are substituted by the carboalkoxy group are mentioned. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3-dichlorophenyl) -4,4' , 5,5'-tetraphenylbiimidazole or 2,2-bis (2,6-dichlorophenyl) -4,4 ', 5,5'-tetraphenyl-1,2'-biimidazole is preferably Can be used.

Specific examples of the oxime compound include o-ethoxycarbonyl-α-oxyimino-1-phenylpropan-1-one and the like, and commercially available products include BASF's OXE01 and OXE02.

As said thioxanthone type compound, 2-isopropyl thioxanthone, 2, 4- diethyl thioxanthone, 2, 4- dichloro thioxanthone, 1-chloro-4- propoxy thioxanthone, etc. are mentioned, for example. Can be mentioned.

Moreover, the photoinitiator etc. of that excepting the above can also be used together in the range which does not impair the effect of this invention. For example, a benzoin type compound or an anthracene type compound etc. are mentioned, These can be used individually or in combination of 2 or more types, respectively.

As said benzoin type compound, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, etc. are mentioned, for example.

Examples of the anthracene-based compound include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, 2-ethyl-9,10-diethoxyanthracene, and the like. Can be mentioned.

Other 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzyl-9,10-phenanthrenequinone, camphorquinone, phenylclioxylic acid A methyl or titanocene compound and the like can be further used in combination as a photopolymerization initiator.

The photopolymerization initiator may be included in an amount of 0.1 to 20% by weight, preferably 0.5 to 15% by weight, and more preferably 1 to 10% by weight, based on 100% by weight of the total solids of the yellow curable resin composition. When the photopolymerization initiator is included in the above range, the yellow curable resin composition may be highly sensitive to shorten an exposure time, thereby improving productivity and maintaining high resolution. Moreover, there exists an advantage that the intensity | strength of the pixel part formed using the composition of the conditions mentioned above, and smoothness in the surface of the said pixel part become favorable.

Furthermore, in order to improve the sensitivity of the said yellow curable resin composition, a photoinitiator may be further included. By containing the said photopolymerization start adjuvant, a sensitivity can become high and productivity can be improved.

As the photopolymerization start adjuvant, for example, one or more compounds selected from the group consisting of an amine compound, a carboxylic acid compound and an organic sulfur compound having a thiol group can be preferably used.

It is preferable to use an aromatic amine compound as the amine compound, and specifically, aliphatic amine compounds such as triethanolamine, methyl diethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4- Dimethylaminobenzoic acid isoamyl, 4-dimethylaminobenzoic acid-2-ethylhexyl, benzoic acid-2-dimethylaminoethyl, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone (common name: US Healer ketone) or 4,4'-bis (diethylamino) benzophenone.

The carboxylic acid compound is preferably an aromatic heteroacetic acid, specifically, phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthio Acetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine or naphthoxyacetic acid, and the like.

Specific examples of the organic sulfur compound having the 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) -trione, trimethylolpropanetris (3-mergaptopropionate), pentaerythritol tetrakis (3-mercaptobutyl Late), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), tetraethylene glycol bis (3-mercaptopropionate), etc. are mentioned. Can be.

Moreover, as a commercially available product, brand names Darocur 1173, Irgacure 184, Irgacure 907, Irgacure 1700 (Ciba company), etc. can also be used. These can be used individually or in mixture of 2 or more types.

Such a photocationic polymerization initiator can be easily obtained as a commercial item, for example, "Kayarad PCI-220" and "Kayarad PCI-620" by brand name, respectively (refer the above: Nihon Kayaku Co., Ltd. make). ], "UVI-6990" [Reference: Union Carbide Co., Ltd.], "Adeka Optma SP-150", "Adeka Optma SP-170" [Reference: manufactured by ADEKA, Inc.], "CI- 5102 "," CIT-1370 "," CIT-1682 "," CIP-1866S "," CIP-2048S "," CIP-2064S "(see above, manufactured by Nihon Soda Co., Ltd.)," DPI-101 " , "DPI-102", "DPI-103", "DPI-105", "MPI-103", "MPI-105", "BBI-101", "BBI-102", "BBI-103", " BBI-105 "," TPS-101 "," TPS-102 "," TPS-103 "," TPS-105 "," MDS-103 "," MDS-105 "," DTS-102 "," DTS- 103 "(refer to above: Midori Chemical Co., Ltd. product)," PI-2074 "(Reference: Rhodia Corporation make), etc. are mentioned.

In particular, "CI-5102" manufactured by Nippon Soda Co., Ltd. is one of the preferred initiators.

The photopolymerization initiator may be used in the same content range as the photopolymerization initiator, and when used in the above-described content, the sensitivity of the yellow curable resin composition including the same may be further improved, and the productivity of the color filter formed using the composition This can be improved.

solvent

The yellow curable resin composition which concerns on one aspect of this invention contains a solvent.

The solvent is not particularly limited and may be an organic solvent commonly used in the art. The solvent may be used without particular limitation as long as it is effective for dissolving the other components, and the solvent used in the conventional yellow curable resin composition, specifically, ethers, aromatic hydrocarbons, ketones, alcohols, esters or amides, etc. It can be used, More specifically, Ethylene glycol monoalkyl ether, such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether and diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate; Propylene glycol dialkyl ethers such as propylene glycol monomethyl ether; Alkylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxy butyl acetate, and methoxy pentyl acetate; Aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone; Alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate; cyclic esters such as γ-butyrolactone; Etc. can be mentioned. These can be used individually or in mixture of 2 or more types.

Since the solvent may vary in viscosity depending on the coating method or apparatus, the content of the solvent may be 60 to 90% by weight, preferably 70 to 85% by weight, based on the total weight of the yellow curable resin composition having the above-mentioned composition. Adjust This content is a range selected in consideration of the dispersion stability of the composition and the ease of processing (eg, applicability) in the manufacturing process.

The yellow curable resin composition according to one embodiment of the present invention may further include an additive in addition to the above components.

additive

The yellow curable resin composition according to one embodiment of the present invention is a filler, other high molecular compounds, surfactants, adhesion promoters, antioxidants, ultraviolet absorbers, anti-agglomerating agents, and curing agents in accordance with the needs of those skilled in the art without departing from the object of the present invention. It may further include an additive such as.

Specific examples of the filler include glass, silica, alumina and the like.

Specific examples of the other polymer compound include curable resins such as epoxy resins and maleimide resins, thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ethers, polyfluoroalkyl acrylates, polyesters, polyurethanes, and the like. Can be.

The said surfactant is a component which improves the film formability of a yellow curable resin composition, For example, polyoxyethylene alkyl ether, polyoxyethylene alkyl peptide, polyethyleneglycol diester, sorbitan fatty acid ester, fatty acid Modified polyesters, tertiary amine-modified polyurethanes, polyethyleneimines, and the like, and KP (manufactured by Shin-Etsu Chemical Co., Ltd.), POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.), EFTOP (manufactured by Tochem Products), MEGAFAC (manufactured by Dainippon Ink & Chemicals Co., Ltd.), Florard (manufactured by Sumitomo 3M), Asahi guard, and supple ( Surflon) (above, Asahi Glass Co., Ltd.), SOLSPERSE (Genekka Co., Ltd.), EFKA (made by EFKA Chemicals), PB 821 (made by Ajinomoto Co., Ltd.), etc. are mentioned.

As the adhesion promoter, for example, vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- (2-aminoethyl) -3-aminopropyltrimethoxysilane, 3-aminoprotriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2 -(3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyl Trimethoxysilane etc. are mentioned.

Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.

Specific examples of the ultraviolet absorber include 2- (3-t-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzothiazole, alkoxybenzophenone and the like. Specific examples of the aggregation inhibitor include sodium polyacrylate and the like.

The said hardening | curing agent is a component for improving deep hardening and mechanical strength, The kind is not specifically limited, For example, an epoxy compound, a polyfunctional isocyanate compound, a melamine compound, an oxetane compound, etc. are mentioned.

The said epoxy compound is not specifically limited, For example, bisphenol-A epoxy resin, hydrogenated bisphenol-A epoxy resin, bisphenol F-type epoxy resin, hydrogenated bisphenol F-type epoxy resin, a no-block type epoxy resin, other aromatic epoxy resin, alicyclic Group epoxy resins, glycidyl ester resins, glycidylamine resins, or brominated derivatives of such epoxy resins; Aliphatic, cycloaliphatic or aromatic epoxy compounds other than epoxy resins and their brominated derivatives; Butadiene (co) polymer epoxides; Isoprene (co) polymer epoxides; Glycidyl (meth) acrylate (co) polymers; Triglycidyl isocyanurate etc. are mentioned.

The said oxetane compound is not specifically limited, For example, carbonate bis oxetane, xylene bis oxetane, adipate bis oxetane, a terephthalate bis oxetane, a cyclohexane dicarboxylic acid bis oxetane, etc. are mentioned, for example. have.

In addition, in order to further increase the degree of curing, the yellow curable resin composition according to the present invention may further include a curing aid. The curing aids that can be used are not particularly limited in the present invention, and any curing aids known in the art can be used.

Typically, tertiary amines, such as benzyldimethylamine, triethanolamine, triethylenediamine, dimethylaminoethanol, and tri (dimethylaminomethyl) phenol; Imidazoles such as 2-methylimidazole and 2-phenylimidazole; Organic phosphines such as triphenylphosphine, diphenylphosphine and phenylphosphine; Tetraphenyl boron salts, such as tetraphenyl phosphonium tetraphenyl borate and triphenyl phosphine tetraphenyl borate, etc. are possible.

The preparation of the yellow curable composition as described above is not particularly limited in the present invention, and follows the manufacturing method of the curable composition as known.

In one example, the yellow colorant is previously mixed with a solvent and dispersed using a bead mill or the like until the average particle diameter of the colorant is about 0.2 µm or less. At this time, a pigment dispersant is used as needed, and some or all of alkali-soluble resin may be mix | blended. In the obtained dispersion (hereinafter sometimes referred to as a mill base), the wavelength absorber, the remainder of the alkali-soluble resin, the photopolymerizable compound and the photopolymerization initiator, other components used as necessary, and additional solvents as necessary, It is further added as much as possible to obtain a desired yellow curable resin composition.

The yellow curable resin composition thus prepared may produce a color filter by wet coating, in which a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), an inkjet, or the like by a wet coating method. Coating apparatus may be used.

The yellow curable resin composition according to one embodiment of the present invention comprises a yellow colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent, wherein the yellow colorant has a transmittance (T _λ ) of 50 to 60 at a wavelength of 470 nm to 510 nm. %, Satisfying the transmission characteristics of Equation 1, wherein the alkali-soluble resin comprises a repeating unit represented by the formula (1), thereby producing a color filter excellent in color reproduction and light efficiency (photo retention) There is an advantage to this.

<Color filter>

Another aspect of the invention is a yellow coating layer comprising a cured product of the above-mentioned yellow curable resin composition; And a self-luminous phosphorous layer formed on the yellow coating layer and containing quantum dots.

The self-luminous pixel layer includes a quantum dot, in which a yellow colorant is not mixed with the quantum dot in the self-luminous pixel layer to form a separate layer to be in contact with the quantum dot. That is, the light emitted by the quantum dots emits light of a specific wavelength. When yellow colorant is used in the self-luminous pixel layer, the red, blue, and green light emitted by the quantum dot are not emitted to the outside of the pixel layer. In addition, since the yellow colorant is aimed at extinction of blue light in red to green color already emitted, according to an embodiment of the present invention, a yellow coating layer including the yellow colorant may be formed on the red pixel layer to the green pixel layer. The yellow coating layer, which is positioned on the self-luminous pixel layer with respect to the light source, that is, the yellow colorant, may be disposed in a direction opposite to the light source. When located between the light source and the self-luminous pixel layer, it may be difficult to secure the effect.

1 is a cross-sectional view of a color filter according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing the arrangement of the color filter for the light source of the present invention.

1 and 2, the color filter includes a substrate 11; A yellow coating layer 13 formed on the substrate 11; And a self-luminous pixel layer 15 formed on the yellow coating layer 13.

In this case, the yellow coating layer 13 is made of the above-mentioned yellow curable resin composition, and more preferably, only the red and green pixel layers 15a and 15b defined as the partition walls 51a, 51b, and 51c as shown in FIG. 2. Formed on the opposite side to the light source 101.

The yellow coating layer 13 shows only green in the green pixel layer 15b in which green and blue are mixed, and red in the red pixel layer 15a in which red and blue are mixed. As a result, pure green and pure red light is extracted. This becomes possible to improve the overall color purity and light efficiency.

The above effects depend largely on the amount of the yellow colorant contained in the yellow coating layer 13, and may be slightly influenced by the thickness. According to one embodiment of the invention, the yellow coating layer 13 is formed to a thickness of 1 to 5㎛. If the thickness is less than the above range, it may be difficult to secure the effects described above, and if the thickness exceeds the above range, it may be difficult to secure a large effect advantage.

In the color filter of the present invention, the substrate may be the substrate of the color filter itself, or may be a portion where the color filter is located in a display device or the like. The substrate may be glass, silicon (Si), silicon oxide (SiO _x ), or a polymer substrate, and the polymer substrate may be polyethersulfone (PES) or polycarbonate (PC).

The self-luminous pixel layer 15 is a layer containing a quantum dot, the self-luminous photosensitive resin composition comprising at least one selected from the group consisting of photoluminescence quantum dots, alkali-soluble resins, photopolymerizable compounds, photopolymerization initiators, and solvents. To prepare and form. In this case, the type and content of the alkali-soluble resin, the photopolymerizable compound, the photopolymerization initiator, and the solvent may be as mentioned in the above-mentioned yellow curable resin composition.

The quantum dots are nano-sized semiconductor materials. Atoms form molecules, and molecules form clusters of small molecules called clusters to form nanoparticles, which are called quantum dots, especially when they are semiconducting. When the quantum dot reaches the excited state from the outside, the quantum dot emits energy according to the corresponding energy band gap.

The color filter includes such photoluminescent quantum dot particles, and the color filter manufactured therefrom may emit light (photoluminescence) by light irradiation.

The quantum dot is not particularly limited as long as it is a quantum dot capable of emitting light by stimulation caused by light, for example, a group II-VI semiconductor compound; Group III-V semiconductor compounds; Group IV-VI semiconductor compounds; A group IV element or a compound containing the same; And combinations thereof may be selected from the group. These can be used individually or in mixture of 2 or more types.

The II-VI semiconductor compound may be selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; CdSeS, CdSeTe, CdSTe, ZnSeS, ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe And CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS, CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof. , A binary element selected from the group consisting of GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof; Three-element compounds 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 an elemental 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 group IV-VI semiconductor compound may be selected from the group consisting of SnS, SnSe, SnTe, PbS, PbSe, PbTe, and mixtures thereof; A three-element compound selected from the group consisting of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbSe, SnPbTe, and mixtures thereof; And SnPbSSe, SnPbSeTe, SnPbSTe, and an elemental compound selected from the group consisting of a mixture thereof, and the group IV element or the compound comprising the same is Si, Ge, and a mixture thereof. An element compound selected from; And a binary element compound selected from the group consisting of SiC, SiGe, and mixtures thereof.

In addition, the quantum dots are homogeneous single structures; Dual structures such as core-shell, gradient structures, and the like; Or a mixed structure thereof.

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

As the colored photosensitive resin composition used in manufacturing a conventional color filter includes colorants of red, green, and blue for color realization, the color filter of the present invention has a quantum dot representing red, a quantum dot representing green, and a quantum dot representing blue. It may include, and at least one selected from the above-mentioned red, green, blue, and combinations thereof.

The quantum dots may be synthesized by a wet chemical process, an organometallic chemical vapor deposition process, or a molecular beam epitaxy process.

The wet chemical process is a method of growing particles by adding a precursor material to an organic solvent. When the crystal is grown, the organic solvent is naturally coordinated to the surface of the quantum dot crystal to act as a dispersant to control the growth of the crystal, so that the organic metal chemical vapor deposition (MOCVD) or molecular beam epitaxy (MBE, molecular) The growth of nanoparticles can be controlled through an easier and cheaper process than vapor deposition such as beam epitaxy.

The self-luminous photosensitive resin composition including such a quantum dot is, in 100% by weight of the total composition, 3 to 80% by weight, 5 to 80% by weight of alkali-soluble resin, 5 to 70% by weight of the photopolymerizable compound, 0.1 to 20% by weight of the photopolymerization initiator. May contain%. In addition, it may further comprise an additive as described above.

The color filter may be manufactured by, for example, the following method, but the present invention is not limited thereto, and the steps of the color filters may be changed according to the designer's needs (see FIGS. 1 and 2).

S1) forming a yellow coating layer 13 on the substrate 11;

S2) forming barrier ribs (51a, 51b, 51c) defining red and green pixel regions (15a, 15b) on the yellow coating layer (13); And

S3) is manufactured by forming a self-luminous pixel layer 15 in the pixel region.

The barrier ribs 51a, 51b, 51c, the self-luminous pixel layer 15, and the yellow coating layer 13 may be formed by applying respective compositions and exposing, developing, and curing the respective compositions.

If necessary, the color filter may further include a black matrix.

<Image display device>

Still another aspect of the present invention is an image display apparatus including the color filter.

The color filter is applicable to various image display devices such as electroluminescent display devices, plasma display devices, and field emission display devices as well as ordinary liquid crystal display devices.

The image display device may include a color filter including a red pattern layer containing red quantum dot particles, a green pattern layer containing green quantum dot particles, and a blue pattern layer containing blue quantum dot particles. In such a case, the emission light of the light source is not particularly limited when applied to the image display device, but in view of better color reproducibility, a light source that emits blue light may be preferably used.

The image display device may include a color filter including only a pattern layer of two colors among a red pattern layer, a green pattern layer, and a blue pattern layer. In such a case, the color filter further includes a transparent pattern layer containing no quantum dot particles.

When only the pattern layer of two colors is provided, a light source that emits light having a wavelength representing the remaining colors not included can be used. For example, when including a red pattern layer and a green pattern layer, the light source which emits blue light can be used. In such a case, the red quantum dot particles emit red light, the green quantum dot particles emit green light, and the transparent pattern layer shows blue light as it is transmitted.

The image display device has an advantage of excellent light efficiency, high luminance, and excellent color reproducibility.

Hereinafter, preferred examples are provided to aid the understanding of the present invention, but the following examples are merely for exemplifying the present invention, and it is apparent to those skilled in the art that various changes and modifications can be made within the scope and spirit of the present invention. Naturally, such modifications and variations fall within the scope of the appended claims. In the following Examples and Comparative Examples, "%" and "parts" indicating contents are by weight unless otherwise specified.

Preparation Example 1 Preparation of Pigment Dispersion Composition

Preparation Example 1-1 Preparation of Pigment Dispersion Composition M1

As a pigment, C.I. Pigment Yellow 138 12.0 parts by weight, 4.0 parts by weight of DISPERBYK-2001 (manufactured by BYK) as a pigment dispersant, 84 parts by weight of propylene glycol methyl ether acetate as a solvent were mixed / dispersed with a bead mill for 12 hours to prepare a pigment dispersion composition M1. It was.

Preparation Example 1-2 Preparation of Pigment Dispersion Composition M2

As a pigment, C.I. Pigment Yellow 185 12.0 parts by weight, 4.0 parts by weight of DISPERBYK-2001 (manufactured by BYK) as a pigment dispersant, 84 parts by weight of propylene glycol methyl ether acetate as a solvent were mixed / dispersed with a bead mill for 12 hours to prepare a pigment dispersion composition M2. It was.

Preparation Example 1-3 Preparation of Pigment Dispersion Composition M3

As a pigment, C.I. Pigment Yellow 231 12.0 parts by weight, 4.0 parts by weight of DISPERBYK-2001 (manufactured by BYK) as a pigment dispersant, 84 parts by weight of propylene glycol methyl ether acetate as a solvent were mixed / dispersed with a bead mill for 12 hours to prepare a pigment dispersion composition M3. It was.

Synthesis Example 1 Synthesis of Quantum Dot Particles

Synthesis Example 1-1 Synthesis of Photoluminescent Green Quantum Dot Particles of CdSe / ZnS Coreshell Structure

0.4 mmol of CdO, 4 mmol of zinc acetate, and 5.5 mL of oleic acid were added to 20 mL of 1-octadecene (1-Octadecene) in a reactor and heated to 150 ° C. After the reaction was left for 20 minutes under vacuum of 100mTorr to remove acetic acid (acetic acid) produced by the substitution of oleic acid in zinc.

Then, 310 ° C. heat was applied to obtain a clear mixture. After maintaining 310 ° C. for 20 minutes, 0.4 mmol of Se powder and 2.3 mmol of S powder were dissolved in 3 mL of trioctylphosphine. And S solution was injected rapidly into the reactor containing Cd (OA) ₂ and Zn (OA) ₂ solutions.

The resulting mixture was grown at 310 ° C. for 5 minutes and then stopped using an ice bath.

Then, precipitated with ethanol to separate the quantum dots using a centrifuge and the excess impurities are washed with chloroform and ethanol to stabilize the particles with oleic acid and have a particle size of 3 to 5 nm. Green quantum dot particles having a CdSe (core) / ZnS (shell) structure were obtained.

The photoluminescence spectrum of the obtained nanoquantum dot was 537 nm.

Synthesis Example 1-2: Synthesis of InP / ZnS Core-Shell Quantum Dot Particles

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 switched to nitrogen. After heating to 280 ° C., a mixed solution of 0.2 mmol (58 μl) of tris (trimethylsilyl) phosphine (TMS ₃ P) and 1.0 mL of trioctylphosphine was rapidly injected and reacted for 20 minutes. Acetone was added to the reaction solution cooled to room temperature rapidly, and the precipitate obtained by centrifugation was dispersed in toluene. The obtained InP semiconductor nanocrystal showed the absorption maximum wavelength of 560-590 nm.

2.4 mmol of zinc acetate (0.448 g), 4.8 mmol of oleic acid and 20 mL of trioctylamine were placed in a reactor and heated to 120 ° C. under vacuum. After 1 hour the atmosphere in the reactor was switched to nitrogen and the reactor was warmed to 280 ° C. 2 ml of the synthesized InP core solution was added thereto, followed by 4.8 mmol of sulfur (S / TOP) in trioctylphosphine, and the final mixture was reacted for 2 hours. Ethanol was added to the reaction solution cooled to room temperature rapidly, and the precipitate obtained by centrifugation was filtered under reduced pressure and dried under reduced pressure to obtain an InP / ZnS core-shell quantum dot. The photoluminescence spectrum of the obtained nano quantum dot was 634 nm.

Synthesis Example 2 Synthesis of Alkali Soluble Resin of Example

Synthesis Example 2-1: Synthesis of Alkali Soluble Resin (E-1)

Prepare a flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube, add 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA), and then add 10.4 g of zinc acrylate and stir while replacing with nitrogen. The reaction temperature was raised to 120 ° C. Subsequently, 11.6 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 88.5 g of vinyltoluene and 17.2 g of methacrylic acid, dissolved, and placed in a dropping lot. Dropped on. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. Then, alkali-soluble resin whose weight average molecular weight 7100 and acid value were 110 mgKOH / g was obtained cooling to room temperature.

Synthesis Example 2-2: Synthesis of Alkali-Soluble Resin (E-2)

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, and 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) was added thereto, followed by 20 g of zinc acrylate, followed by stirring under nitrogen substitution. The reaction temperature was raised to 120 ° C. Subsequently, 7.6 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 65 g of vinyltoluene and 15 g of methacrylic acid, dissolved in a dropping lot, and then added to the flask described above. I was. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. After cooling to room temperature, an alkali-soluble resin having a weight average molecular weight of 10750 and an acid value of 98.8 mgKOH / g was obtained.

Synthesis Example 2-3: Synthesis of Alkali-Soluble Resin (E-3)

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, and 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) was added thereto, followed by 30 g of zinc acrylate, followed by stirring under nitrogen substitution. The reaction temperature was raised to 120 ° C. Subsequently, 7 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 57 g of vinyltoluene and 13 g of methacrylic acid, dissolved in a dropping lot, and added dropwise to the flask described above. . After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. After cooling to room temperature, an alkali-soluble resin having a weight average molecular weight of 13750 and an acid value of 85 mgKOH / g was obtained.

Synthesis Example 2-4: Synthesis of alkali-soluble resin (E-4)

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, and 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) was added thereto, followed by 10 g of zinc acrylate, followed by stirring under nitrogen substitution. The reaction temperature was raised to 120 ° C. Subsequently, 11.6 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 70 g of vinyltoluene and 20 g of methacrylic acid, dissolved in a dropping lot, and then added to the flask described above. I was. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. After cooling to room temperature, an alkali-soluble resin having a weight average molecular weight of 8750 and an acid value of 131 mgKOH / g was obtained.

Synthesis Example 2-5: Synthesis of alkali-soluble resin (E-5)

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, and 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) was added thereto, followed by 5 g of zinc acrylate, followed by stirring under nitrogen substitution. The reaction temperature was raised to 120 ° C. Subsequently, 6.6 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 80 g of vinyltoluene and 15 g of methacrylic acid, dissolved, and dropped into a dropping lot, and then dripped into the flask described above. I was. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. Then, alkali-soluble resin whose weight average molecular weight was 12850 and acid value was 131 mgKOH / g was obtained cooling to room temperature.

Synthesis Example 2-6: Synthesis of Alkali Soluble Resin (E-6)

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, and 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) was added thereto, followed by 10 g of zinc acrylate, followed by stirring under nitrogen substitution. The reaction temperature was raised to 120 ° C. Next, 6.5 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to a monomer mixture mixed with 80 g of vinyltoluene and 10 g of methacrylic acid, dissolved, and added to a dropping lot, and then dropped into the flask described above. I was. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. After cooling to room temperature, an alkali-soluble resin having a weight average molecular weight of 15850 and an acid value of 67 mgKOH / g was obtained.

Synthesis Example 2-7: Synthesis of Alkali-Soluble Resin (E-7)

A flask equipped with a stirrer, a thermometer reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, while 45 parts by weight of N-benzylmaleimide, 45 parts by weight of methacrylic acid, 10 parts by weight of tricyclodecyl methacrylate, t 4 parts by weight of butylperoxy-2-ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate were added, followed by stirring and mixing to prepare a monomer dropping lot. 6 parts by weight of n-dodecanediol and propylene glycol monomethyl ether 24 parts by weight of acetate was added thereto, followed by stirring and mixing to prepare a lot of dropwise addition of a chain transfer agent.

Thereafter, 395 parts by weight of propylene glycol monomethyl ether acetate was introduced into the flask, and the atmosphere in the flask was changed to nitrogen from air, followed by stirring. The temperature of the flask was raised to 90 ° C.

Subsequently, dropping of the monomer and the chain transfer agent was started from the dropping lot. The dropwise addition proceeds for 2 hours while maintaining 90 ° C, and after 1 hour, the temperature is raised to 110 ° C and maintained for 3 hours, and then a gas introduction tube is introduced to bubble oxygen / nitrogen = 5/95 (v / v) mixed gas. The ring started.

Subsequently, 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 added to the flask for 8 hours at 110 ° C. The reaction was continued and an alkali-soluble resin having a solid content of 29.1 wt%, a weight average molecular weight of 32,000, and an acid value of 114 mgKOH / g was then cooled to room temperature.

Synthesis Example 3: Synthesis of Alkali-Soluble Resin of Comparative Example

Synthesis Example 3-1 Synthesis of Alkali Soluble Resin (E-8)

120 g of propylene glycol monomethyl ether acetate, 80 g of propylene glycol monomethyl ether, 2 g of 2,2'-azobisisobutyronitrile, methacrylic acid in a flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot and a nitrogen introduction tube. 40 g, benzyl methacrylate 40 g, methyl methacrylate 20 g, n-dodecyl mercapto 3g was added and nitrogen-substituted.

After stirring, the temperature of the reaction solution was raised to 80 ° C. and reacted for 8 hours. The solid acid value of the alkali-soluble resin thus synthesized was 140.6 mgKOH / g and the weight average molecular weight Mw measured by GPC was about 16110.

Synthesis Example 3-2: Synthesis of alkali-soluble resin (E-9)

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube was prepared, and 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) was added thereto, followed by adding 2 g of zinc acrylate and stirring with nitrogen substitution. The reaction temperature was raised to 120 ° C. Subsequently, 11.6 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 78 g of vinyltoluene and 20 g of methacrylic acid, dissolved in a dropping lot, and then added to the flask described above. I was. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. After cooling to room temperature, an alkali-soluble resin having a weight average molecular weight of 7550 and an acid value of 132 mgKOH / g was obtained.

Synthesis Example 3-3: Synthesis of alkali-soluble resin (E-10)

Prepare a flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen inlet tube, add 345.2 g of propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA), add 80 g of zinc acrylate, and stir under nitrogen substitution. The reaction temperature was raised to 120 ° C. Subsequently, 11.6 g of t-butylperoxy-2-ethylhexanoate (polymerization initiator) was added to the monomer mixture mixed with 10 g of vinyltoluene and 10 g of methacrylic acid, dissolved in a dropping lot, and then added to the flask described above. I was. After completion of the dropwise addition, the mixture was stirred at 120 ° C for 2 hours to carry out a copolymerization reaction to produce a copolymer. Then, alkali-soluble resin whose weight average molecular weight was 8650 and acid value was 68 mgKOH / g was obtained cooling to room temperature.

Preparation Example 2 Preparation of Self-luminous Photosensitive Resin Composition for Forming Self-luminous Pixel Layer

After mixing the components as shown in Table 1, after diluting with propylene glycol monomethyl ether acetate so that the total solid content is 20% by weight, and stirred for 1 hour to obtain a self-luminous photosensitive resin composition.

Composition (wt%) Preparation Example 2-1 Preparation Example 2-2 Quantum dots 1-1 ¹⁾ 30 - 1-2 ²⁾ - 30 Photopolymerizable compound ^{3 )} 30 30 Polymerization initiator ^{4 )} 5 5 Alkali-soluble resins ^{5 )} 35 35 1) CdSe (core) / ZnS (shell) structure quantum dots of Synthesis Example 1-1
2) InP (core) / ZnS (shell) structure quantum dots of Synthesis Example 1-2
3) dipentaerythritol pentaacrylate amber acid monoester (TO-1382, Dong-A Synthetic)
4) Irgacure-907 (manufactured by Ciba)
5) Alkali-soluble resin of Synthesis Example 2-7 (E-7)

Example  And Comparative example

As shown in Table 2 below, the components were mixed and stirred for 1 hour to prepare a yellow curable resin composition.

(Unit: weight%) Pigment dispersion composition Photopolymerizable compound ¹⁾ Photopolymerization initiator ²⁾ Alkali soluble resin Solvent ^{3 )} M1 M2 M3 E-1 E-2 E-3 E-4 E-5 E-6 E-8 E-9 E-10 Example 1 37.50 - - 3.33 0.67 5 - - - - - - - - 53.50 Example 2 - 37.50 - 3.33 0.67 5 - - - - - - - - 53.50 Example 3 - - 37.50 3.33 0.67 5 - - - - - - - - 53.50 Example 4 - - 37.50 3.33 0.67 - 5 - - - - - - - 53.50 Example 5 - - 37.50 3.33 0.67 - - 5 - - - - - - 53.50 Example 6 - - 37.50 3.33 0.67 - - - 5 - - - - - 53.50 Example 7 - - 37.50 3.33 0.67 - - - - 5 - - - - 53.50 Example 8 - - 37.50 3.33 0.67 - - - - - 5 - - - 53.50 Example 9 - - 50.00 2.59 0.52 - 3.89 - - - - - - - 43.00 Example 10 - - 50.00 2.59 0.52 - - 3.89 - - - - - - 43.00 Example 11 - - 50.00 2.59 0.52 - - - 3.89 - - - - - 43.00 Example 12 - - 50.00 2.59 0.52 - - - - 3.89 - - - - 43.00 Example 13 - - 50.00 2.59 0.52 - - - - - 3.89 - - - 43.00 Example 14 - - 37.50 6.67 0.67 1.67 - - - - - - - - 53.50 Example 15 - - 37.50 1.67 0.66 6.67 - - - - - - - - 53.50 Comparative Example 1 75 - - 1.2 0.5 - - - - - - 4 - - 19.3 Comparative Example 2 70 - - 1.5 0.8 - - - - - - - 3.0 - 24.7 Comparative Example 3 76.5 - - 1.2 0.8 - - - - - - - - 3.0 18.5 1) dipentaerythritol pentaacrylate amber acid monoester (carboxylic acid-containing 5-functional photopolymerizable compound, TO-1382, kneading agent)
2) Irgacure-907 (made by Ciba)
3) PGMEA (propylene glycol monomethyl ether acetate)

Experimental Example  1: Experiment of permeation characteristics of yellow curable resin composition

In order to confirm the permeation characteristics of the yellow curable resin composition prepared in Examples and Comparative Examples was carried out as follows.

First, each composition was applied on a glass substrate by spin coating, then placed on a heating plate and maintained at a temperature of 100 ° C. for 3 minutes to form a thin film.

Subsequently, using an ultra-high pressure mercury lamp (trade name USH-250D) manufactured by Ushio Denki Co., Ltd., light was irradiated at an exposure dose of 365 mJ / cm 2 under an air atmosphere, and no special optical filter was used. After heating for 10 minutes in a heating oven at 150 ℃ to prepare a yellow coating layer of a thickness of 2㎛.

Permeability was measured for the prepared yellow coating layer using an Olympus spectrometer OPS-200, and the results obtained are shown in Table 3 below.

λ (nm) T _λ T _(λ-20) T _{(λ + 20)} Example 1 480 56.1 1.2 90.1 Example 2 500 51.5 1.9 76.8 Example 3 490 53.1 0.5 93.2 Example 4 490 54.7 0.4 92.8 Example 5 490 54.7 0.35 94.6 Example 6 490 54.7 0.4 93.8 Example 7 490 54.7 0.5 93.7 Example 8 490 54.7 0.6 94.2 Example 9 490 51.7 0.2 92 Example 10 490 52.1 0.2 92.1 Example 11 490 54.5 0.28 91.5 Example 12 490 55.8 0.21 92.4 Example 13 490 54.7 0.34 92.3 Example 14 490 54.7 0.5 93.2 Example 15 490 55.1 0.5 93.2 Comparative Example 1 480 43 0.6 80.7 Comparative Example 2 480 44.3 0.5 81.8 Comparative Example 3 480 43.4 0.55 81

Production Example  3: Manufacture of color filter

Example  1 to 15 and Comparative example  1 to 3

(1) Formation of Yellow Coating Layer

First, the yellow curable resin compositions of Examples and Comparative Examples were coated on a 100 × 100 mm glass substrate (Corning® EAGLE XG® Slim, Corning) by spin coating, then placed on a heating plate and held at a temperature of 100 ° C. for 3 minutes. To form a thin film.

Subsequently, using an ultra-high pressure mercury lamp (trade name USH-250D) manufactured by Ushio Denki Co., Ltd., light was irradiated at an exposure dose of 365 mJ / cm 2 under an air atmosphere, and no special optical filter was used.

The thin film irradiated with ultraviolet rays was developed by soaking for 80 seconds in a KOH aqueous solution developing solution of pH 10.5. The thin plate coated glass plate was washed with distilled water, dried by blowing nitrogen gas, and heated (postbaked, POB) for 10 minutes in a heating oven at 150 ° C. to form a yellow coating layer having a thickness of 2 μm.

(2) Formation of self-luminous pixel layer containing quantum dots

By using the self-luminous photosensitive resin composition prepared in Preparation Examples 2-1 and 2-2, the same method as in (1), containing 5㎛ thick quantum dots on each yellow coating layer prepared in (1) By forming the self-luminous pixel layer, Examples 1 to 15 and Comparative Examples 1 to 3 were manufactured. In this case, the quantum dot-containing self-luminous pixel layer corresponding to each of the yellow coating layers prepared in Examples and Comparative Examples is shown in Table 4 below.

Experimental Example  2: emission intensity of color filter and Mineral retention  Measure

The emission intensity of the color filter manufactured in Preparation Example 3 was measured as follows.

As a blue light source, XLamp® XRE-Roy (Royal blue) manufactured by Cree having a maximum absorption wavelength of 450 nm was used, and the blue light source was disposed in a direction opposite to the yellow coating layer. At this time, the luminescence intensity before further bake was measured using an Ocean Optics company spectrometer.

Subsequently, after further baking the color filter prepared in Preparation Example 3 at 200 ° C. for 60 minutes, the emission intensity was measured by the same method as the emission intensity before the additional bake, and the light retention was measured in the following formula (2).

[Equation 2]

% Of light retention = {(luminance intensity after additional bake) / (luminance intensity before additional bake)} × 100

The obtained results are shown in Table 4 below, wherein the measured 450 nm intensity of the light source region is small, and the higher the intensity value of the light emitting region, 520 nm or 640 nm, means that the color purity is excellent and the light emission characteristics are excellent.

Yellow coating layer Self-luminous pixel layer PoB 1 time
Intensity Intensity after additional POB Luminous Intensity Rate (%) 450nm (blue) 520nm (green) 640nm (red) Example 1 Preparation Example 2-1 25 53,940 -       46,940 87.0% Example 2 Preparation Example 2-1 20 59,940 -       52,940 88.3% Example 3 Preparation Example 2-1 17 56,950 -       49,950 87.7% Example 4 Preparation Example 2-1 24 55,940 -       48,940 87.5% Example 5 Preparation Example 2-1 13 59,130 -       52,130 88.2% Example 6 Preparation Example 2-1 8 57,130 -       50,130 87.7% Example 7 Preparation Example 2-2 10 - 54,130       49,130 90.8% Example 8 Preparation Example 2-2 12 - 57,130       52,130 91.2% Example 9 Preparation Example 2-2 5 - 58,130       53,130 91.4% Example 10 Preparation Example 2-2 8 - 55,130       50,130 90.9% Example 11 Preparation Example 2-2 12 - 58,130       54,130 93.1% Example 12 Preparation Example 2-2 10 - 58,930       53,930 91.5% Example 13 Preparation Example 2-2 19 - 64,400       59,400 92.2% Example 14 Preparation Example 2-2 11 - 62,300       57,300 92.0% Example 15 Preparation Example 2-1 24 55710 -       53,120 95.4% Comparative Example 1 Preparation Example 2-1 32 34,890 -       15,460 44.3% Comparative Example 2 Preparation Example 2-2 31 - 35,890       22,980 64.0% Comparative Example 3 Preparation Example 2-2 29 - 40,260       27,540 68.4%

Referring to Table 4, in the case of the color filter including the yellow coating layer of Examples 1 to 15 including the alkali-soluble resin of the present invention is excellent in 450nm blue light blocking characteristics of the blue light source region, excellent green and red light emission characteristics It was confirmed that the light retention was excellent and the heat resistance was also excellent.

In particular, in the case of the color filter including the yellow coating layers of Comparative Examples 1 to 3, which do not contain the alkali-soluble resin of the present invention, the light retention property is poor, and the emission intensity of 520 nm, which is a green emission region, and the emission intensity, 640 nm, which is a red emission region. It was confirmed that there is a problem that is significantly lower than the embodiment.

11: description
13: yellow coating layer
15: self-emitting pixel layer
15a: red pixel region
15b: green pixel region
51a, 51b, 51c: bulkhead
101: light source

Claims (12)

Containing a yellow colorant, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent,
The yellow colorant has a transmittance (T _λ ) of 50 to 60% at a wavelength of 470 nm to 510 nm, and satisfies a transmission characteristic of Equation 1 below.
The yellow soluble resin composition characterized in that it comprises a repeating unit represented by the following formula (1):
[Equation 1]
T _{(λ-20 nm)} <2%
T _{(λ + 20 nm)} ≥ 90%
[Formula 1]

(In Formula 1,
Each R ₁ is independently hydrogen or a methyl group,
Each R ₂ is independently hydrogen or a methyl group). The method of claim 1,
The yellow colorant is a yellow curable resin composition, characterized in that it comprises at least one selected from the group consisting of CI Pigment Yellow 138, CI Pigment Yellow 185 and CI Pigment Yellow 231. The method of claim 1,
It is contained in 5 to 60 weight% with respect to 100 weight% of total yellow solid resin composition solid content, The yellow curable resin composition characterized by the above-mentioned. The method of claim 1,
The said alkali-soluble resin is contained in 3 to 60 weight% with respect to 100 weight% of total yellow solid resin composition, The yellow curable resin composition characterized by the above-mentioned. The method of claim 1,
The said photopolymerizable compound is contained in 5 to 70weight% with respect to 100 weight% of all the said yellow curable resin composition solid content, The yellow curable resin composition characterized by the above-mentioned. The method of claim 1,
The said photoinitiator is contained in 0.1 to 20 weight% with respect to 100 weight% of all the said yellow curable resin composition solid content, The yellow curable resin composition characterized by the above-mentioned. The method of claim 1,
The yellow curable resin composition further comprises an additive. A yellow coating layer containing the hardened | cured material of the yellow curable resin composition of any one of Claims 1-7; And a self-luminous pixel layer formed on the yellow coating layer and containing quantum dots. The method of claim 8,
The yellow coating layer is a color filter, characterized in that formed on the red pixel layer to the green pixel layer. The method of claim 8,
The yellow coating layer is a color filter, characterized in that the thickness of 1 to 5㎛. An image display apparatus comprising the color filter of claim 8. The method of claim 11,
And the color filter is disposed in a direction in which the yellow coating layer is opposed to the light source.

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