JP2020513467A - Yellow curable resin composition, color filter manufactured using the same, and image display device - Google Patents

Abstract

The present invention includes a yellow colorant; and a wavelength absorber having a maximum absorption wavelength of 560 to 620 nm and satisfying specific transmission characteristics, so that color mixture of red to green pixel layers in an image display device using blue light can be achieved. TECHNICAL FIELD The present invention relates to a yellow curable resin composition capable of preventing and improving color reproducibility and light efficiency, a color filter manufactured by using the same, and an image display device. [Selection diagram] Figure 2

Description

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

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

  The color filter has a plurality of colors (usually red) for forming the black matrix layer formed on the transparent substrate in a predetermined pattern to shield the boundary between the pixels and each pixel. The pixel portion in which the three primary colors of (R), green (G), and blue (B) are arranged in a predetermined order is sequentially laminated.

  Generally, a color filter can be manufactured by coating three or more kinds of hues on a transparent substrate by a dyeing method, an electrodeposition method, a printing method, a pigment dispersion method or the like. The pigment dispersion method using a photosensitive resin is mainstream.

  Among them, the pigment dispersion method is a photosensitive material containing a colorant, 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. A method for forming a colored thin film by coating a functional resin composition, exposing a pattern of a form to be formed, and then repeating a series of steps of removing an unexposed portion with a solvent and thermosetting, It is actively applied to manufacture LCDs for mobile phones, laptops, monitors, TVs, etc.

  In recent years, even in a photosensitive resin composition for a color filter using a pigment dispersion method having various advantages, not only excellent pattern characteristics but also high color reproducibility and further improved performance such as high brightness and high contrast ratio are obtained. The current situation is that it is required.

  However, the color reproduction is realized by the light emitted from the light source passing through the color filter, but in this process, a part of the light is absorbed by the color filter, resulting in a decrease in light efficiency, and However, there is a fundamental limitation that perfect color reproduction cannot be achieved due to the pigment characteristics of the color filter.

  A color filter using a quantum dot photosensitive resin composition has been proposed as a solution to such a problem.

  Patent Document 1 proposes that color reproducibility can be enhanced by including a color filter layer formed of quantum dots (Quantum Dot), and Patent Document 2 discloses that a conventional color filter is used for quantum dot fluorescence. It is proposed that the luminous efficiency can be improved and the display quality can be improved by substituting the luminous layer composed of the body.

  As described above, when the quantum dot uses a light emitting material of a color filter, the light emitting waveform can be narrowed, and high color rendering capability not realized by a pigment can be obtained, and excellent brightness characteristics can be obtained. However, due to the low stability of quantum dots used in the manufacture of color filters, crystals and the like are generated on the surface, which causes a problem that the luminous efficiency of the quantum dots is greatly deteriorated.

  In particular, an image display device equipped with a quantum dot color filter uses blue light as a light source, and the blue light used at this time is mixed with the self-luminous light in the red, green and blue pixel layers. That is, in the case of the blue pixel layer, there is no problem, but in the case of the red and green pixel layers, it is difficult to emit pure red and green. As an example, in the case of a green pixel layer, an emission peak appears at 500 to 550 nm due to quantum dots, but when blue light is used, a peak due to blue light at 380 to 400 nm appears at the same time, resulting in a color filter of Reduces color purity.

  Therefore, there is a limit in displaying a desired color with reproducibility, and there is a disadvantage that the image quality is inferior.

Korean Patent Publication No. 2007-0094679 (2007.9.21) Korean Patent Publication No. 2009-0036373 (2009.04.14)

  In order to solve the above problems, an object of the present invention is to provide a yellow curable resin composition for providing a color filter and an image display device with improved color reproducibility and light efficiency.

  Another object of the present invention is to provide a color filter and an image display device having improved color reproducibility and light efficiency by including a cured product of the yellow curable resin composition.

  The yellow curable resin composition of the present invention for achieving the above object includes a yellow colorant; and a wavelength absorber having a maximum absorption wavelength of 560 to 620 nm and satisfying the transmission characteristics of the following formula 1.

[Formula 1]

(In the above formula 1,
T is the transmittance (%), and λ is a wavelength selected from 560 to 620 nm).

  In addition, the color filter of the present invention includes a cured product of the yellow curable resin composition.

  An image display device of the present invention includes the color filter.

  The yellow curable resin composition according to the present invention has an advantage that a color filter and an image display device having improved color reproducibility and light efficiency can be manufactured.

  Further, the color filter and the image display device manufactured by using the yellow curable resin composition according to the present invention have an advantage that the color reproducibility and the light efficiency are improved.

FIG. 1 is a sectional view illustrating a color filter according to an exemplary embodiment of the present invention. FIG. 2 is a cross-sectional view illustrating an arrangement of color filters with respect to a light source according to an exemplary embodiment of the present invention.

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

  In the present invention, when an arbitrary member is positioned “on” another member, this means not only when the arbitrary member is in contact with the other member but also between the two members. Including the case where exists.

  In the present invention, when any part is referred to as “comprising” a certain component, this does not exclude the other component, and may further include the other component unless otherwise specified. Means

<Yellow curable resin composition>
The yellow curable resin composition according to one embodiment of the present invention utilizes a yellow colorant; and a wavelength absorber having a maximum absorption wavelength of 560 to 620 nm and satisfying the transmission characteristics of the following formula 1; Thus, there is an advantage that the color reproducibility and the light efficiency are improved at the time of manufacturing the color filter and the image display device.

[Formula 1]

(In the above formula 1,
T is the transmittance (%), and λ is a wavelength selected from 560 to 620 nm).

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

  In the case of a color filter using quantum dots, unlike a color filter containing a pigment, it is a substance that emits light by itself and self-luminesce on the pixel area so that it can self-lumine red, green or blue. A pixel layer is formed. The self-emission pixel layer has a self-emission characteristic that absorbs the applied 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 emission occurs at 600 to 700 nm, green light emission occurs at 490 to 590 nm, and blue light emission occurs at 400 to 480 nm, thus realizing full color. At this time, the light source of the image display device to which the color filter is mounted uses blue light. However, looking at the emission spectrum of the red to green self-emission pixel layers, the blue light emits blue light at 400 to 480 nm. When the emission spectra come together, color mixing occurs in the self-emission pixel layer, which is serious in the red to green pixel layers.

  In order to prevent the above problems, by arranging 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, green and blue can be obtained. Only the green color is shown in the mixed green pixel layer, and only the red color is shown in the red pixel layer in which the red and blue colors are mixed. As a result, it is possible to extract pure green light or pure red light. Therefore, the color purity and light efficiency of the self-emitted light can be improved.

  The yellow colorant is not particularly limited, and a conventionally known yellow colorant can be used. For example, any one of a pigment, a dye, and a pigment may be used.

  Specific examples include those to which the following color index (C.I .; issued by The Society of Dyers and Colorists) numbers are given. However, from the viewpoint of reducing the environmental load and affecting the human body, a halogen-free coloring agent is preferable.

More specifically,
Monoazo pigment: C.I. I. Pigment Yellow 1, 2, 5, 8, 105, 120, 150, 168, 182, 183, 190;
Pyrazolone azo pigment: C.I. I. Pigment Yellow 10;
Diazo pigment: C.I. I. Pigment Yellow 12, 16, 63, 83, 126, 127, 128, 152, 170, 188;
Azomethine pigment: C.I. I. Pigment Yellow 101, 129;
Anthraquinone pigment: C.I. I. Pigment Yellow 108, 147, 193, 197, 199, 202;
Isoindolinone pigment: C.I. I. Pigment Yellow 109, 110, 139, 173, 185;
Quinoline pigment: C.I. I. Pigment Yellow 115;
Quinophthalone pigment: C.I. I. Pigment Yellow 138;
Polycyclic pigment: C.I. I. Pigment Yellow 148;
Dioxime pigment: C.I. I. Pigment Yellow 153;
Benzimidazolone pigments: C.I. I. Pigment Yellow 154, 175, 180, 181;
Heterocyclic pigments: C.I. I. Pigment Yellow 192;
Perione pigments: C.I. I. Pigment Yellow 196;
Inorganic pigment: C.I. I. Pigment 31, 32, 30, 119, 157, 162, 184;
Cyanine-based pigments; Xanthene-based pigments; Merocyanine-based pigments; Dipyrrin-based pigments; Arylmethine-based pigments; Acridine-based pigments; Coumarin-based pigments; Oxazines; (Oxazine) -based pigments; tetrapyrrole-based pigments and the like can be used, but are not limited thereto.

  These pigments may be rosin treated, surface treated using a pigment derivative having an acidic group or basic group introduced therein, surface graft treatment using a polymer compound, fine particle treatment using sulfuric acid, or It may be one that has been washed with an organic solvent or water.

  In particular, C.I. I. Pigment Yellow 185 can be preferably used.

  According to one embodiment of the present invention, the yellow colorant is used in an amount of 5 to 80% by weight, preferably 10 to 50% by weight, based on 100% by weight of the total solid content of the entire yellow curable resin composition. To do. If the content is less than the above range, it is difficult to expect the above-described effect of improving blue color purity and light efficiency by blocking blue light. On the contrary, even if the content exceeds the above range, a large effect is obtained. Since it does not increase, it is uneconomical. Therefore, it is preferably used within the above range.

  The yellow colorant in the invention can be used together with a dispersant, a dispersion aid, etc., if necessary.

  As the dispersant, an appropriate dispersant such as a cationic dispersant, an anionic dispersant, or a nonionic dispersant can be used, but a polymer dispersant is preferable. Specific examples include acrylic copolymers, polyurethanes, polyesters, polyethyleneimines, polyallylamine, and the like. Such a dispersant can be obtained commercially, but for example, as an acrylic copolymer, DisperBYK-2000, DisperBYK-2001, BYK-LPN6919, BYK-LPN21116 (above, manufactured by BYK Corporation). , Solsperse 5000 (manufactured by Lubrizol), as a polyurethane, DisperBYK-161, DisperBYK-162, DisperBYK-163, DisperBYK-165, DisperBYK-167, DisperBYKse 170 (manufactured by DisperBYK, B-K), above (Disperse BYK-182B). 76500 (manufactured by Lubrizol), as a polyethyleneimine Solsperse 24000 (Lubrizol) Company production), Adisper as polyester PB821, Adisper PB822, Ajisper PB880 (Ajinomoto Fine-Techno Co., Ltd. production), and the like.

  Examples of the dispersion aid include pigment derivatives, and specific examples include copper phthalocyanine, diketopyrrolopyrrole, and quinophthalone sulfonic acid derivatives.

  The dispersants may be used alone or in admixture of two or more. The content of the dispersant is usually 1 part by weight or less, preferably 0.1 to 0.7 part by weight, more preferably 0.05 to 0.5 part by weight, relative to 1 part by weight of the yellow colorant. Good. If the content of the dispersant is too large, the developability may be damaged.

Wavelength Absorber The yellow curable resin composition according to one embodiment of the present invention includes a wavelength absorber having a maximum absorption wavelength range of 560 to 620 nm and satisfying the transmission characteristics of the following mathematical formula 1.

[Formula 1]

(In the above formula 1,
T is the transmittance (%), and λ is a wavelength selected from 560 to 620 nm).

  As described above, the self-luminous pixel layer formed in the color filter has a self-luminous property of absorbing the irradiated light and emitting 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 emission occurs at 600 to 700 nm, green light emission occurs at 490 to 590 nm, and blue light emission occurs at 400 to 480 nm, thus realizing full color. At this time, an error occurs in the wavelength range in which the red light emission or the green light emission occurs, and color mixing with red light or green light may occur.

  In order to solve the above-mentioned problems, the present invention includes a wavelength absorbing agent having a maximum absorption wavelength range of 560 to 620 nm and satisfying the transmission characteristics of Equation 1, thereby providing red or green light. This has the advantage of preventing color mixture of and improving the color reproduction rate.

  The wavelength absorbing agent can be used without particular limitation as long as it has a maximum absorption wavelength range of 560 to 620 nm and satisfies the transmission characteristics of the mathematical formula 1.

  The wavelength absorber according to an exemplary embodiment of the present invention may include a compound represented by Chemical Formula 1 below.

[Chemical formula 1]

(In the above chemical formula 1,
M is Cu or Zn,
X ₁ is selected from the group consisting of F, Cl and Br as a halogen element, n is an integer of 0 to 5,
R _{1 to} R ₄ are each independently selected from the group consisting of methyl, ethyl, propyl, isopropyl and tert-butyl. )

  More specific examples of the compound represented by the chemical formula 1 include the following compounds.

  As the wavelength absorbing agent, a commercially available wavelength absorbing agent can be used, and specific examples thereof include BD-590 and CA-590 manufactured by Kyonin Yoko Co., Ltd., but the wavelength absorbing agent is not limited thereto.

  The wavelength absorber may be included in an amount of 1 to 30% by weight, preferably 1 to 20% by weight, more preferably 1 to 10% by weight, based on 100% by weight of the total solid content in the yellow curable resin composition. .. When the content of the wavelength absorber is less than the above range, color mixture may occur in the wavelength range of red light and green light, and the emission efficiency may decrease. When the content exceeds the above range, the stability of the pattern may decrease. Can occur.

  The yellow curable resin composition according to an exemplary embodiment of the present invention may further include one or more selected from the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, a solvent and an additive.

Alkali-Soluble Resin The yellow curable resin composition according to an embodiment of the present invention may further include an alkali-soluble resin.

  The alkali-soluble resin has reactivity and alkali solubility due to the action of heat, acts as a dispersion medium of solid content including a colorant, and functions as a binder resin. Any binder resin that can be dissolved in the alkaline developer used in the development stage of the film production used can be used.

  As the alkali-soluble resin, one having an acid value of 20 to 200 (KOHmg / g) can be used. At this time, the acid value is a value measured as the amount (mg) of potassium hydroxide necessary to neutralize 1 g of the acrylic polymer, and is involved in the solubility. If the acid value of the alkali-soluble resin is less than the above range, it is difficult to ensure a sufficient developing rate, while if it exceeds the above range, the adhesion to the substrate is reduced, and a short circuit of the pattern occurs. However, there is a problem in that the storage stability of the entire composition decreases and the viscosity increases.

  Further, the alkali-soluble resin may have a weight average molecular weight of 3,000 to 200,000 Da, preferably 5,000 to 100,000 Da for use in a color filter, and the molecular weight distribution is It can be directly polymerized or purchased and used so as to have a range of 1.5 to 6.0, preferably 1.8 to 4.0. Alkali-soluble resin having a molecular weight and a molecular weight distribution within the above range is not only improved in hardness as already mentioned, and has a high residual film rate as well as excellent solubility in an unexposed portion in a developing solution to improve resolution. The advantage is that

  The alkali-soluble resin may be an acrylic monomer having an unsaturated double bond. A dispersion resin having an acid value can be produced by copolymerizing a monomer having an unsaturated bond with the following carboxyl group and a monomer having an unsaturated bond capable of being copolymerized therewith.

  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; An anhydride of dicarboxylic acid; ω-carboxypolycaprolactone mono (meth) acrylate and the like, and polymer mono (meth) acrylates having a carboxyl group and a hydroxyl group at both ends are mentioned.

  More specifically, acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride, fumaric acid or maleic acid alkyl ester and the like is possible, in which case, the maleic acid alkyl ester, 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. Is mentioned.

  The monomer having a carboxyl group and an unsaturated bond and the monomer copolymerizable therewith may be used alone or in combination of two or more kinds.

  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 ethers. Compound, vinyl cyanide compound, unsaturated imide compound, aliphatic conjugated diene compound, giant monomer having monoacryloyl group or monomethacryloyl group at the end of the molecular chain, bulky monomer and combinations thereof One or more selected from the group is possible.

  Specifically, the copolymerizable monomer is styrene, vinyltoluene, α-methylstyrene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzylmethyl. Aromatic vinyl compounds such as ether, m-vinylbenzyl methyl ether, p-vinylbenzyl methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether or p-vinylbenzyl glycidyl ether; methyl (meth) acrylate, ethyl (Meth) acrylate, n-propyl (meth) acrylate, i-propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, sec-butyl (meth) acrylate or t-butyl (meth) ) Acry Alkyl (meth) acrylates such as over preparative;

  Cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.1.2.6] decan-8-yl (meth) acrylate, 2-dicyclopenta Alicyclic (meth) acrylates such as nyloxyethyl (meth) acrylate or isobornyl (meth) acrylate; aryl (meth) acrylates such as phenyl (meth) acrylate or benzyl (meth) acrylate; 2-hydroxyethyl (meth ) Acrylate or hydroxyalkyl (meth) acrylates such as 2-hydroxypropyl (meth) acrylate; N-cyclohexylmaleimide, N-benzylmaleimide, N-phenylmaleimide, No-hydroxyphenylmaleic , N-m-hydroxyphenylmaleimide, N-p-hydroxyphenylmaleimide, N-o-methylphenylmaleimide, Nm-methylphenylmaleimide, Np-methylphenylmaleimide, N-o-methoxyphenylmaleimide, N-substituted maleimide compounds such as Nm-methoxyphenylmaleimide and Np-methoxyphenylmaleimide; unsaturated amide compounds such as (meth) acrylamide and N, N'-dimethyl (meth) acrylamide; 3- (methacryloyl) Oxymethyl) oxetane, 3- (methacryloyloxymethyl) -3-ethyloxetane, 3- (methacryloyloxymethyl) -2-trifluoromethyloxetane, 3- (methacryloyloxymethyl) -2-phenyloxetane, 2- (methacryloyl) Etc. oxymethyl) oxetane or 2- (methacryloyloxy methyl) -4-trifluoromethyl oxetane unsaturated oxetane compounds such as and the like.

  The content of the alkali-soluble resin is 2 to 80% by weight, preferably 5 to 75% by weight, more preferably 10 to 70% by weight, based on 100% by weight of the total solid content in the yellow curable resin composition. Can be If the content of the alkali-soluble resin is within the above range, it is easy to form the yellow coating layer, and in the process including the developing process, the film reduction of the pixel portion of the exposed portion is prevented during the development, and the non-pixel portion is prevented. Has the advantage that the lack of

Photopolymerizable Compound The yellow curable resin composition according to one embodiment of the present invention may further include 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 described below, but is preferably a monofunctional photopolymerizable compound, a bifunctional photopolymerizable compound or a trifunctional compound. The above polyfunctional photopolymerizable compounds and the like can be mentioned.

  Specific examples of the monofunctional photopolymerizable compound include nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate and N-vinylpyrrolidone. Examples of commercially available products include Aronix M-101 (manufactured by Toagosei Co., Ltd.), KAYARAD TC-110S (manufactured by Nippon Kayaku Co., Ltd.), and VISCOAT 158 (manufactured by Osaka Organic Chemical Industry Co., Ltd.).

  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). ) Acrylate, bis (acryloyloxyethyl) ether of bisphenol A, 3-methylpentanediol di (meth) acrylate, and the like, and commercially available products include Aronix M-210, M-1100, M-1200 (Toagosei Co., Ltd.). Manufactured by Nippon Kayaku Co., Ltd., VISCOAT 260 (manufactured by Osaka Organic Chemical Industry Co., Ltd.), AH-600, AT-600 or UA-306H (manufactured by 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, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated dipentaerythritol hexa (meth) acrylate, di There are pentaerythritol hexa (meth) acrylate and the like, and as commercially available products, Aronix M-309, TO-1382 (manufactured by Toagosei Co., Ltd.), KAYARAD TMPTA, KAYA. AD DPHA or KAYARAD DPHA-40H (manufactured by Nippon Kayaku Co., Ltd.).

  Among the photopolymerizable compounds exemplified above, trifunctional or higher functional (meth) acrylic acid esters and urethane (meth) acrylates are particularly preferable because they have excellent polymerizability and can improve the strength.

  The photopolymerizable compounds exemplified above can be used alone or in combination of two or more kinds.

  The photopolymerizable compound is contained in the yellow curable resin composition in an amount of 5 to 70% by weight, preferably 10 to 60% by weight, and more preferably 15 to 50% by weight, based on 100% by weight of the total solid content. Can be When the photopolymerizable compound is included in the above range, there is an advantage that the strength and smoothness of the pixel portion are good.

Photopolymerization Initiator The yellow curable resin composition according to one embodiment of the present invention may further include a photopolymerization initiator.

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

  Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethylketal, 2-hydroxy-1- [4- (2-hydr). Xyethoxy) 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] propan-1-one or 2- (4-methyl Benzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one and the like.

  Examples of the benzophenone compound include benzophenone, methyl 0-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4′-methyldiphenyl sulfide, 3,3 ′, 4,4′-tetra (tert-butylperoxycarbonyl). ) Benzophenone or 2,4,6-trimethylbenzophenone.

  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-methy Phenyl) ethenyl] -1,3,5-triazine or 2,4-bis (trichloromethyl) -6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine. ..

  Specific examples of the biimidazole compound include 2,2′-bis (2-chlorophenyl) -4,4 ′, 5,5′-tetraphenylbiimidazole and 2,2′-bis (2,3-). Dichlorophenyl) -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) -4,4', 5,5 Examples thereof include'-tetraphenyl-1,2'-biimidazole or an imidazole compound in which the phenyl group at the 4,4 ', 5,5' position is substituted with a carboalkoxy group. Of these, 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 can be preferably used.

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

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

  Further, a photopolymerization initiator other than the above may be additionally used within a range not damaging the effects of the present invention. Examples thereof include a benzoin compound and an anthracene compound, and these can be used alone or in combination of two or more kinds.

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

  Examples of the anthracene compound include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, and 2-ethyl-9,10-diethoxyanthracene.

  In addition, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzyl, 9,10-phenathrenequinone, camphorquinone, methyl phenylglyoxylate, or titanocene compounds. Can be additionally used in combination as a photopolymerization initiator.

  The photopolymerization initiator is 0.1 to 40% by weight, preferably 0.5 to 35% by weight, more preferably 1 to 30% based on 100% by weight of the total solid content in the yellow curable resin composition. % May be included. When the photopolymerization initiator is included in the above range, the yellow curable resin composition has high sensitivity, and the exposure time is shortened. Therefore, there is an advantage that productivity is improved and high resolution can be maintained. is there. Further, there is an advantage that the strength of the pixel portion formed by using the composition of the above-mentioned conditions and the smoothness on the surface of the pixel portion are improved.

  Further, in order to improve the sensitivity of the yellow curable resin composition, a photopolymerization initiation auxiliary agent may be further included. By containing the photopolymerization initiation auxiliary agent, the sensitivity can be further increased and the productivity can be improved.

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

  As the amine compound, it is preferable to use an aromatic amine compound, specifically, aliphatic amine compounds such as triethanolamine, methyldiethanolamine, and triisopropanolamine, methyl 4-dimethylaminobenzoate, and 4-dimethylaminobenzoic acid. Acid ethyl, isoamyl 4-dimethylaminobenzoate, 2-ethylhexyl 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N, N-dimethylparatoluidine, 4,4′-bis (dimethylamino) benzophenone (Common name: Michler's ketone) or 4,4′-bis (diethylamino) benzophenone can be used.

  The carboxylic acid compound is preferably an aromatic heteroacetic acid, specifically, phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxy. Examples thereof include phenylthioacetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine and naphthoxyacetic acid.

  Specific examples of the organic sulfur compound having a thiol group include 2-mercaptobenzothiazole, 1,4-bis (3-mercaptobutyryloxy) butane, 1,3,5-tris (3-mercaptobutyloxy). Ethyl) -1,3,5-triazine-2,4,6 (1H, 3H, 5H) -trione, trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptobutylate), Pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), tetraethylene glycol bis (3-mercaptopropionate), etc. are mentioned.

  In addition, as commercially available products, product names such as Darocur 1173, Irgacure 184, Irgacure 907, and Irgacure 1700 (manufactured by Ciba) can also be used. These may be used alone or in combination of two or more.

  Such a cationic photopolymerization initiator can be easily obtained as a commercial product, and, for example, as trade names, “Kayarad PCI-220” and “Kayarad PCI-620” [see above, Nippon Kayaku Co., Ltd. Company manufacture], "UVI-6990" [Reference: Union Carbide Company manufacture], "Adeka Optomer SP-150", "Adeka Optomer SP-170" [Reference: manufactured by ADEKA CORPORATION], "CI-5102". , "CIT-1370", "CIT-1682", "CIP-1866S", "CIP-2048S", "CIP-2064S" [Reference: above, manufactured by Nippon Soda Co., Ltd.], "DPI-101", " DPI-102 "," DPI-103 "," DPI-105 "," MPI-103 "," MPI-105 "," BBI-1 " 1 "," BBI-102 "," BBI-103 "," BBI-105 "," TPS-101 "," TPS-102 "," TPS-103 "," TPS-105 "," MDS-103 ". , "MDS-105", "DTS-102", "DTS-103" [reference: above, manufactured by Midori Kagaku Co., Ltd.], "PI-2074" [reference: manufactured by Rhodia Ltd.] and the like.

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

  The photopolymerization initiator auxiliary agent can 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 containing it is further increased, and the composition Provides the effect of improving the productivity of the color filter formed by using.

Solvent The yellow curable resin composition according to an embodiment of the present invention may further include a solvent.

  The solvent is not particularly limited and may be an organic solvent commonly used in the art. The solvent, as long as it is effective to dissolve other components, can be used without particularly limiting the solvent used in the usual yellow curable resin composition, specifically ethers , Aromatic hydrocarbons, ketones, alcohols, esters or amides can be used, more specifically ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono. Ethylene glycol monoalkyl ethers such as butyl ether; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; Ethylene glycol alkyl ether acetates such as chill cellosolve acetate and ethyl cellosolve acetate; propylene glycol dialkyl ethers such as propylene glycol monomethyl ether; propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl Alkylene glycol alkyl ether acetates such as acetate and methoxypentyl 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; ethanol, propanol , Butanol, hex Ethyl 3-ethoxypropionate, 3-methoxy esters such as methyl propionate;, cyclohexanol, ethylene glycol, alcohols such as glycerin γ- butyrolactone cyclic esters such as; and the like. These may be used alone or in combination of two or more.

  Since the viscosity of the solvent may change depending on the coating method or apparatus, the content of the solvent may be 5 to 90% by weight, preferably 15 to 80% by weight, of the yellow curable resin composition having the above-mentioned composition. Adjust appropriately. Such a content is a range selected in consideration of dispersion stability of the composition and process easiness in the manufacturing process (for example, coating property).

Additives Yellow curable resin composition according to an embodiment of the present invention, fillers, other polymer compounds, surfactants, adhesion promoters, as required by those skilled in the art within the range that does not impair the object of the present invention, Additives such as antioxidants, UV absorbers, anti-agglomeration agents, curing agents may be further included.

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

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

  The surfactant is a component that improves the film forming property of the yellow curable resin composition, and includes, for example, polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyethylene glycol diesters, sorbitan fatty acid esters, There are fatty acid-modified polyesters, tertiary amine-modified polyurethanes, polyethyleneimines, etc. In addition, KP (manufactured by Shin-Etsu Chemical Co., Ltd.), Polyflow (POLYFLOW) (manufactured by Kyoeisha Chemical Co., Ltd.), and EFTOP (Manufactured by Tochem Products Co., Ltd.), MEGAFAC (manufactured by Dainippon Ink and Chemicals Co., Ltd.), Fluorad (manufactured by Sumitomo 3M), Asahi guard, Surflon (above, Sahigarasu Co. production), Solsperse (SOLSPERSE) (Zeneca production), EFKA (EFKA Chemicals Co. production) include PB821 (Ajinomoto manufacture),.

  Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, and N- (2-aminoethyl). ) -3-Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltri Examples thereof include methoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane and 3-mercaptopropyltrimethoxysilane.

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

  Specific examples of the ultraviolet absorber include 2- (3-t-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole and alkoxybenzophenone. Specific examples of the aggregation preventing agent include sodium polyacrylate.

  The curing agent is a component for enhancing deep curing and mechanical strength, and the type thereof is not particularly limited, and examples thereof include an epoxy compound, a polyfunctional isocyanate compound, a melamine compound, and an oxetane compound.

  The epoxy compound is not particularly limited, and examples thereof include bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol F epoxy resin, novolac epoxy resin, and other aromatic epoxy resins, Alicyclic epoxy resins, glycidyl ester resins, glycidyl amine resins, or brominated derivatives of such epoxy resins; epoxy resins and aliphatic, alicyclic or aromatic epoxy compounds other than the brominated derivatives thereof; butadiene (Co) polymer epoxidized product; isoprene (co) polymer epoxidized product; glycidyl (meth) acrylate (co) polymer; triglycidyl isocyanurate and the like.

  The oxetane compound is not particularly limited, and examples thereof include carbonate bisoxetane, xylene bisoxetane, adipate bisoxetane, terephthalate bisoxetane, and cyclohexanedicarboxylic acid bisoxetane.

  In addition, the yellow curable resin composition according to the present invention may further include a curing aid in order to increase the degree of curing. The curing auxiliary agent that can be used is not particularly limited in the present invention, and any curing auxiliary agent 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; triphenylphosphine , Organic phosphines such as diphenylphosphine and phenylphosphine; and tetraphenylboron salts such as tetraphenylphosphonium tetraphenylborate and triphenylphosphine tetraphenylborate.

  The production of the yellow curable composition as described above is not particularly limited in the present invention, and a publicly known method for producing a curable composition is used.

  As an example, a yellow colorant is mixed with a solvent in advance and dispersed using a bead mill or the like until the average particle size of the colorant becomes about 0.2 μm or less. At this time, a pigment dispersant may be used if necessary, and a part or all of the alkali-soluble resin may be mixed. The resulting dispersion (hereinafter sometimes referred to as millbase) contains a wavelength absorber, the rest of the alkali-soluble resin, a photopolymerizable compound and a photopolymerization initiator, and other components used as necessary, if necessary. An additional solvent is further added so as to have a predetermined concentration to obtain the desired yellow curable resin composition.

  The yellow curable resin composition thus produced can be used to produce a color filter by wet coating. At this time, as a wet coating method, a roll coater, a spin coater, a slit and spin coater, a slit coater (die coater) is used. It may be also referred to as “), and a coating device such as an inkjet can be used.

<Color filter>
Another aspect of the present invention is a color filter including a cured product of the yellow curable resin composition described above.

  The pixel layer of the color filter is a self-luminous pixel layer containing quantum dots. At this time, in order to absorb the blue emission spectrum, the yellow colorant is not used in a mixture with the quantum dots in the self-luminous pixel layer. Instead, a separate layer is formed so as to be in contact with this. That is, the self-luminous light emitted by the quantum dots emits light of a specific wavelength. At this time, when a yellow coloring agent is used in the self-luminous pixel layer, the self-luminous red and blue light is emitted. And the green color is not emitted to the outside of the pixel layer. In addition, since the yellow colorant is intended to extinguish the blue light in the red or green color that has already been emitted, it must be located on the self-emission pixel layer with respect to the light source, and it must be located between the light source and the self-emission pixel layer. If it is located at, its effect cannot be secured.

  FIG. 1 is a sectional view of a color filter according to an embodiment of the present invention, and FIG. 2 is a sectional view showing an arrangement of the color filter with respect to the light source of the present invention.

  Referring to FIGS. 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.

  At this time, the yellow coating layer 13 is made of the yellow curable resin composition described above, and more preferably, as shown in FIG. 2, the red and green pixel layers 15a, which are defined as the partition walls 51a, 51b, and 51c. It is formed only on 15b and is located 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 only red in the red pixel layer 15a in which red and blue are mixed. It enables the extraction of pure red light, improving overall color purity and light efficiency.

  The above-mentioned effect depends largely on the content of the yellow colorant in the yellow coating layer 13, and is slightly affected by the thickness. As an example, the yellow coating layer 13 is formed with a thickness of 1 to 5 μm. If the thickness is less than the above range, the effect as described above cannot be ensured, and if the thickness exceeds the range, a large effect advantage can be ensured. Can not.

In the color filter of the present invention, the base material may be a substrate of the color filter itself or a portion where the color filter is located in a display device or the like, and is not particularly limited. The substrate may be glass, silicon (Si), silicon oxide (SiO _x ) or a polymer substrate, and the polymer substrate may be polyethersulfone (PES), polycarbonate (polycarbonate, PC), or the like. May be

  The self-luminous pixel layer 15 is a layer containing quantum dots, and contains one or more selected from the group consisting of photoluminescence quantum dots, alkali-soluble resins, photopolymerizable compounds, photopolymerization initiators, and solvents. A luminescent photosensitive resin composition is manufactured and formed. At this time, the types and contents of the alkali-soluble resin, the photopolymerizable compound, the photopolymerization initiator, and the solvent can be in accordance with those mentioned in the yellow curable resin composition.

  The quantum dots are nano-sized semiconductor materials. Atoms form molecules, and molecules form aggregates of small molecules called clusters to form nanoparticles. When such nanoparticles have semiconductor properties, they are called quantum dots. When the quantum dot receives energy from the outside and reaches an excited state, the quantum dot itself emits energy according to the corresponding energy band gap.

  The color filter contains such photoluminescent quantum dot particles, and the color filter produced therefrom can emit light (photoluminescence) by irradiation with light.

  The quantum dot is not particularly limited as long as it is a quantum dot capable of emitting light upon stimulation with light, and for example, a II-VI group semiconductor compound; a III-V group semiconductor compound; an IV-VI group semiconductor compound; Compounds including; and combinations thereof. These may be used alone or in combination of two or more.

  The II-VI group semiconductor compound is a binary compound selected from the group consisting of CdS, CdSe, CdTe, ZnS, ZnSe, ZnTe, ZnO, HgS, HgSe, HgTe, and mixtures thereof; CdSeS, CdSeTe, CdSTe, ZnSeSe. , ZnSeTe, ZnSTe, HgSeS, HgSeTe, HgSTe, CdZnS, CdZnSe, CdZnTe, CdHgS, CdHgSe, CdHgTe, HgZnS, HgZnSe, HgZnTe and ternary compound selected from the group consisting of mixtures thereof; and CdZnSeS, CdZnSeTe, CdZnSTe, CdHgSeS , CdHgSeTe, CdHgSTe, HgZnSeS, HgZnSeTe, HgZnSTe, and mixtures thereof. The III-V semiconductor compound may be selected from the group consisting of elemental compounds, and the III-V semiconductor compound may be GaN, GaP, GaAs, GaSb, AlN, AlP, AlAs, AlSb, InN, InP, InAs, InSb, and mixtures thereof. A binary element compound selected from the group consisting of: GaNP, GaNAs, GaNSb, GaPAs, GaPSb, AlNP, AlNAs, AlNSb, AlPAs, AlPSb, InNP, InNAs, InNSb, InPAs, InPSb, GaAlNP, and mixtures thereof. Three-element compound selected; and GaAlNAs, GaAlNSb, GaAlPAs, GaAlPSb, GaInNP, GaInNAs, GaInNSb, GaInPAs, GaInPSb, InAlNP, InAlNAs, The group IV-VI semiconductor compound may be SnS, SnSe, SnTe, PbS, PbSe, PbTe, and these, A binary element compound selected from the group consisting of a mixture of SnSeS, SnSeTe, SnSTe, PbSeS, PbSeTe, PbSTe, SnPbS, SnPbTe, SnPbTe, and a three-element compound selected from the group consisting of SnPbSSe, SnPbSSe, and SnPbSSe, SnPbSe, SnPbSe, and SnPbSSe. , And a group consisting of a quaternary compound selected from the group consisting of a mixture thereof, wherein the group IV element or a compound containing the group IV element is selected from the group consisting of Si, Ge, and a mixture thereof. And an elemental compound that includes SiC, SiGe, and a mixture thereof.

  The quantum dots may have a homogeneous single structure; a double structure such as a core-shell or a gradient structure; or a mixed structure thereof.

  Materials having a core-shell dual structure and a core and a shell may be composed of the different semiconductor compounds described above. For example, the core may include at least one substance selected from the group consisting of CdSe, CdS, ZnS, ZnSe, CdTe, CdSeTe, CdZnS, PbSe, AgInZnS, and ZnO, but is not limited thereto. is not. The shell may include, but is not limited to, one or more substances selected from the group consisting of CdSe, ZnSe, ZnS, ZnTe, CdTe, PbS, TiO, SrSe, and HgSe.

  Like the colored photosensitive resin composition used in the manufacture of ordinary color filters, the color filters of the present invention include red, green, and blue colorants for realizing hue, and the quantum dots also show red. The quantum dot, the quantum dot showing green, and the quantum dot showing blue may be included, and one or more kinds selected from the above-mentioned red, green, blue, and a combination thereof may be used.

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

  The wet chemical process is a method of growing a particle by adding a precursor material to an organic solvent. When the crystal grows, the organic solvent is naturally coordinated on the surface of the quantum dot crystal, and acts as a dispersant to control the crystal growth. Therefore, the metal organic chemical vapor deposition (MOCVD, metal) method is used. It is possible to control the growth of nanoparticles through a process that is easier and cheaper than a vapor deposition method such as organic chemical vapor deposition (MBE) or molecular beam epitaxy (MBE).

  The self-luminous photosensitive resin composition containing such quantum dots has a quantum dot of 3 to 80% by weight, an alkali-soluble resin of 5 to 80% by weight, and a photopolymerizable compound of 5 to 70% by weight in the total composition of 100% by weight. %, And 0.1 to 20% by weight of a photopolymerization initiator. In addition, the additives described above may be additionally included.

  The color filter may be manufactured, for example, by the following method, but is not limited thereto, and the order of the steps described below may be changed according to the need of the designer. (See Figures 1 and 2).

(S1) Forming the yellow coating layer 13 on the substrate 11.
(S2) forming barriers 51a, 51b, 51c defining red and green pixel regions 15a, 15b on the yellow coating layer 13; and (S3) forming a self-luminous pixel layer 15 in the pixel regions. To be manufactured.

  The partition walls 51a, 51b, 51c, the self-luminous pixel layer 15, and the yellow coating layer 13 may be formed by applying the respective compositions, exposing, developing, and curing in a predetermined pattern. Good.

  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 device including the color filter.

  The color filter can be applied not only to a normal liquid crystal display device but also to various image display devices such as an electroluminescent display device, a plasma display device, and a field emission display device.

  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 this case, when applied to the image display device, the light emitted from the light source is not particularly limited, but from the viewpoint of more excellent color reproducibility, a light source that emits blue light can be preferably used.

  According to another embodiment of the present invention, the image display device of the present invention may include a color filter including only pattern layers having two kinds of hues, a red pattern layer, a green pattern layer and a blue pattern layer. .. In this case, the color filter further includes a transparent pattern layer containing no quantum dot particles.

  In the case where only the pattern layers having two kinds of hues are provided, it is possible to use a light source that emits light having a wavelength showing the remaining hue that is not included. For example, a light source that emits blue light can be used when including a red pattern layer and a green pattern layer. In this case, the red quantum dot particles emit red light, the green quantum dot particles emit green light, and the transparent pattern layer transmits blue light as it is to show blue light.

  The image display device has excellent light efficiency, high brightness, and excellent color reproducibility.

  Hereinafter, the present specification will be described in detail with reference to Examples. However, the embodiments according to the present specification may be modified into various other forms, and the scope of the present specification should not be construed as being limited to the embodiments detailed below. The examples herein are provided to those of ordinary skill in the art to more fully describe the present specification. Further, "%" and "parts" indicating the contents below are on a weight basis unless otherwise specified.

Production Examples 1 to 4
Production Example 1: Synthesis of photoluminescent green quantum dot particles having a CdSe / ZnS core-shell structure 0.4 mmol of CdO, 4 mmol of zinc acetate (Zinc acetate), and 5.5 mL of oleic acid (Oleic acid) were added to 1-octadecene (1-octadecene). It was put in a reactor together with 20 mL, and heated to 150 ° C. for reaction. Then, in order to remove acetic acid generated by substituting oleic acid for zinc, the reaction product was left under a vacuum of 100 mTorr for 20 minutes.
Then, heat of 310 ° C. was applied to obtain a transparent mixture, and the mixture was maintained at 310 ° C. for 20 minutes, and 0.4 mmol of Se powder and 2.3 mmol of S powder were added to 3 mL of trioctylphosphine. The Se and S solutions, dissolved in, were rapidly injected into the reactor containing the 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.

  After that, it was precipitated with ethanol and the quantum dots were separated using a centrifuge, and excess impurities were washed off with chloroform and ethanol to stabilize with oleic acid. A green quantum dot particle having a CdSe (core) / ZnS (shell) structure in which particles having a total length of 3 to 5 nm are distributed was obtained.

Production Example 2: Synthesis of alkali-soluble resin A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen inlet tube was prepared, while 45 parts by weight of N-benzylmaleimide, 45 parts by weight of methacrylic acid and tri After adding 10 parts by weight of cyclodecyl methacrylate, 4 parts by weight of t-butylperoxy-2-ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate, the mixture was stirred and mixed to prepare a monomer dropping funnel, and n-dodecane was added. 6 parts by weight of diol and 24 parts by weight of propylene glycol monomethyl ether acetate were added and mixed by stirring to prepare a dropping funnel for chain transfer agent.

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

  Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The dropping was continued for 2 hours while maintaining 90 ° C., and after 1 hour, the temperature was raised to 110 ° C. and maintained for 3 hours, and then a gas introduction tube was introduced to introduce oxygen / nitrogen = 5/95 (v / V) Bubbling of the mixed gas was started.

  Next, 10 parts by weight of glycidyl methacrylate, 0.4 parts by weight of 2,2′-methylenebis (4-methyl-6-t-butylphenol), and 0.8 parts by weight of triethylamine were charged into the flask and the mixture was heated at 110 ° C. for 8 hours. While continuing the reaction for a period of time and then cooling to room temperature, an alkali-soluble resin having a solid content of 29.1% by weight, a weight average molecular weight of 32,000 and an acid value of 114 mgKOH / g was obtained.

Preparation Example 3: Preparation of Self-Emitting Photosensitive Resin Composition for Formation of Self-Emitting Pixel Layer As shown in Table 1 below, after mixing the components, the total solid content was adjusted to 20% by weight. After diluting with propylene glycol monomethyl ether acetate, the mixture was sufficiently stirred to obtain a self-luminous photosensitive resin composition.

Examples 1-6 and Comparative Examples 1-2
As shown in Table 2 below, after mixing the components, the mixture was diluted with propylene glycol monomethyl ether acetate so that the total solid content was 20% by weight, and then sufficiently stirred to give a yellow curable resin composition. I got a thing.

Experimental Example 1: Permeation property experiment of yellow curable resin composition In order to confirm the permeation property of the yellow curable resin composition prepared in Examples 1 to 6 and Comparative Examples 1 and 2, the following experiment was performed. ..

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

Next, using an ultra-high pressure mercury lamp (trade name USH-250D) manufactured by USHIO INC., Light was irradiated in the atmosphere at an exposure amount (365 nm) of 200 mJ / cm ² , and no special optical filter was used. It was Then, it was heated in a heating oven at 150 ° C. for 10 minutes to produce a yellow coating layer having a thickness of 2 μm.

  The transmittance of the manufactured yellow coating layer was measured using a spectrometer OPS-200 manufactured by Olympus Corporation, and the obtained results are shown in Table 3 below.

  Referring to Table 3 above, in the case of the yellow coating layer (Examples 1 to 6) manufactured by the yellow curable resin composition of the present invention, the yellow curability of the present invention can be improved by including the wavelength absorber of the present invention. It can be confirmed that the wavelength absorptance was increased and the transmittance was decreased as compared with the case of the yellow coating layer (Comparative Examples 1 and 2) not manufactured with the resin composition.

Production Example 4: Production of color filter
Production Examples 4-1 to 4-6 and Production Examples 4-13 to 4-14
(1) Formation of Yellow Coating Layer First, a glass substrate (Corning (registered trademark) EAGLE XG) having a size of 100 × 100 mm was prepared by spin coating the yellow curable resin compositions of Examples 1-6 and Comparative Examples 1-2. (Registered trademark) Slim, manufactured by Corning Incorporated), and then placed on a heating plate and maintained at a temperature of 100 ° C. for 3 minutes to form a thin film.

Next, using an ultra-high pressure mercury lamp (trade name USH-250D) manufactured by USHIO INC., Light was irradiated in the atmosphere at an exposure amount (365 nm) of 200 mJ / cm ² , and no special optical filter was used. It was

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

(2) Formation of Self-Emitting Pixel Layer Using the self-emission photosensitive resin composition produced in Production Example 3-1, the same method as in (1) above was applied to each of Manufacture Examples 4-1 to 4-6 and Manufacture Examples 4-13 to 4-14 were manufactured by forming a self-luminous pixel layer having a thickness of 5 μm on the yellow coating layer.

Production Examples 4-7 to 4-12 and Production Examples 4-15 to 4-16
A color filter is manufactured by the same method as in Manufacturing Examples 4-1 to 4-6 and Manufacturing Examples 4-13 to 4-14, and a self-luminous photosensitive resin composition for forming a self-luminous pixel layer is manufactured in the manufacturing example. 3-2 to produce Production Examples 4-7 to 4-12 and Production Examples 4-15 to 4-16.

Experimental Example 2: Measurement of emission intensity of color filter The emission intensity of the color filter manufactured in Production Example 4 was measured as follows.

  The light-converted area is measured by using XLamp (registered trademark) XRE-Roy (Royal blue) manufactured by Cree, which has a maximum absorption wavelength of 450 nm as a blue light source, and the blue light source is in a direction facing the yellow coating layer. In Production Examples 4-1 to 4-6 and Production Examples 13 to 14, 450 nm as a light source region and 520 nm as a light conversion region are produced in Production Examples 4-7 to 4-12 and Production Examples 15 to 16. Was measured for emission intensity at 450 nm in the light source region and 640 nm in the light conversion region using a spectrometer manufactured by Ocean Optics.

  The obtained results are shown in Table 4 below, in which the measured light source region has a small intensity of 450 nm, and the higher the intensity value of the emission region of 520 nm or 640 nm, the better the color purity and the emission property. Means that

  Referring to Table 4, in the case of the color filters including the yellow coating layers of Examples 1 to 6 including the wavelength absorbent of the present invention (Production Examples 4-1 to 4-12), the emission intensity of 450 nm in the blue light source region. Is 50 or less and has excellent blocking characteristics, the emission intensity at 520 nm in the green emission region is 40,000 or more, and the emission intensity at 640 nm in the red emission region is 35,000 or more. I was able to confirm that it is also excellent.

  In comparison, in the case of the color filters including the yellow coating layer of Comparative Examples 1 and 2 not containing the wavelength absorbent of the present invention (Production Examples 4-13 to 4-16), the emission intensity of 450 nm in the blue light source region. Is 80 or more, the blocking characteristics are inferior, and the emission intensity at 520 nm, which is a green emission region, and the emission intensity at 640 nm, which is a red emission region, are remarkably inferior at 30,000 or less. it can.

11 Base Material 13 Yellow Coating Layer 15 Self-Emitting Layer 15a Red Pixel Region 15b Green Pixel Region 51a, 51b, 51c Partition 101 Light Source

(In the above chemical formula 1,
M is Cu or Zn,
X ₁ is each independently selected from the group consisting of F, Cl and Br as a halogen element, and n is each independently an integer of 0 to 5,
R _{1 to} R ₄ are each independently selected from the group consisting of methyl, ethyl, propyl, isopropyl and tert-butyl. )

The solvent is not particularly limited and may be an organic solvent commonly used in the art. The solvent, as long as it is effective to dissolve other components, can be used without particularly limiting the solvent used in the usual yellow curable resin composition, specifically ethers , Aromatic hydrocarbons, ketones, alcohols, esters or amides can be used, more specifically ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol mono. Ethylene glycol monoalkyl ethers such as butyl ether; Diethylene glycol dialkyl ethers such as diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether; Chill cellosolve acetate, ethylene glycol alkyl ether acetates such as ethyl cellosolve acetate; propylene glycol monoalkyl ethers such as propylene glycol monomethyl ether; propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxy Alkylene glycol alkyl ether acetates such as butyl acetate and methoxypentyl 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; ethanol, Propanol, butanol, Ethyl 3-ethoxypropionate, 3-methoxy esters such as methyl propionate; SANOL, cyclohexanol, ethylene glycol, alcohols such as glycerin γ- butyrolactone cyclic esters such as; and the like. These may be used alone or in combination of two or more.

Claims (9)

A yellow curable resin composition comprising: a yellow colorant; and a wavelength absorber having a maximum absorption wavelength of 560 to 620 nm and satisfying the transmission characteristics of the following formula 1.
[Formula 1]
(In the above formula 1,
T is the transmittance (%), and λ is a wavelength selected from 560 to 620 nm).   The yellow curable resin composition according to claim 1, wherein the yellow curable resin composition further comprises one or more selected from the group consisting of an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, a solvent and an additive. Resin composition. The yellow curable resin composition according to claim 1, wherein the wavelength absorbing agent contains a compound represented by the following chemical formula 1.
[Chemical formula 1]
(In the above chemical formula 1,
M is Cu or Zn,
X ₁ is selected from the group consisting of F, Cl and Br as a halogen element, n is an integer of 0 to 5,
R _{1 to} R ₄ are each independently selected from the group consisting of methyl, ethyl, propyl, isopropyl and tert-butyl).   The yellow curable resin composition according to claim 1, wherein the yellow colorant is contained in an amount of 5 to 80% by weight based on 100% by weight of the entire yellow curable resin composition.   The yellow curable resin composition according to claim 1, wherein the wavelength absorbing agent is contained in an amount of 1 to 30% by weight based on 100% by weight of the entire yellow curable resin composition.   A color filter comprising: a yellow coating layer containing the cured product of the yellow curable resin composition according to any one of claims 1 to 5; and a self-luminous pixel layer formed on the yellow coating layer and containing quantum dots. ..   The color filter according to claim 6, wherein the yellow coating layer is formed on the red pixel layer to the green pixel layer.   An image display device comprising the color filter according to claim 6. The image display device according to claim 8, wherein the color filter has a yellow coating layer arranged in a direction facing a light source.