KR20180068625A - Yellow curableresin composition, color filter and display device having the same - Google Patents

Abstract

The present invention relates to a yellow curable resin composition capable of preventing color mixing of red to green pixel layers in an image display apparatus using blue light to enhance color reproducibility and light efficiency, and a color filter and an image display device manufactured using the same. The composition comprises: a yellow colorant; and a wavelength absorbing agent having a maximum absorption wavelength of 560-620 nm and satisfying specific transmission characteristics.

Description

TECHNICAL FIELD [0001] The present invention relates to a yellow curable resin composition, and a color filter and an image display device using the same. BACKGROUND ART [0002]

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

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

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

In general, a color filter can be produced by coating three or more colors on a transparent substrate by a dyeing method, an electrodeposition method, a printing method, a pigment dispersion method, etc. Recently, a pigment dispersion method using a pigment- It accomplishes.

In the pigment dispersion method, a photosensitive resin composition containing a colorant, an alkali-soluble resin, a photopolymerizable monomer, a photopolymerization initiator, an epoxy resin, a solvent and other additives is coated on a transparent substrate provided with a black matrix, A method of forming a colored thin film by repeating a series of steps of exposing and then removing a non-exposed portion with a solvent and thermally curing it, and has been actively applied to manufacturing LCDs for mobile phones, notebooks, monitors, TVs and the like.

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

However, in color reproduction, light emitted from a light source is transmitted through a color filter. In this process, a part of light is absorbed by the color filter, resulting in a decrease in light efficiency. Further, due to the pigment characteristics as a color filter, There are fundamental limitations.

To solve this problem, a color filter using a quantum dot photosensitive resin composition has been proposed.

KOKAI Publication No. 2007-0094679 discloses that the color reproducibility can be improved by including a color filter layer formed of quantum dots. Korean Patent Publication No. 2009-0036373 discloses that a conventional color filter is made of a quantum dot fluorescent material It is suggested that the display quality can be improved by improving the luminous efficiency by substituting the luminous layer.

When the quantum dot is used as the light emitting material of the color filter, the light emission waveform can be narrowed, the high color rendering capability which can not be realized by the pigment, and the excellent luminance characteristic are obtained. However, due to the low stability of the quantum dots performed in the manufacture of color filters, crystals or the like are generated on the surface, resulting in a problem that the luminous efficiency of the quantum dots is greatly lowered.

Particularly, an image display apparatus equipped with a quantum dot color filter uses blue light as a light source, and the blue light used here is mixed with self-emission light in the red, green, and blue pixel layers. That is, there is no problem in the case of the blue pixel layer, but in the case of the red and green pixel layers, the emission of pure red and green becomes difficult. For example, in the case of a green pixel layer, an emission peak appears at 500 to 550 nm by a quantum dot, and when blue light is used, a peak due to blue light at 380 to 400 nm occurs at the same time, resulting in lowering the color purity of a color filter.

Therefore, there is a disadvantage that image quality is deteriorated because there is a limitation in displaying a desired color reproducibly.

Korean Patent Publication No. 2007-0094679 (September 21, 2007) Korean Patent Publication No. 2009-0036373 (Apr. 14, 2009)

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

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

To achieve the above object, the yellow curable resin composition of the present invention comprises a yellow colorant; And a wavelength absorbing agent having a maximum absorption wavelength of 560 to 620 nm and satisfying a transmission characteristic of the following formula (1).

[Equation 1]

10%? T (?)? 60%

T (? -20 nm)? 60%

T (? + 20 nm)? 60%

(In the above formula (1)

T is a transmittance (%), and? Is a wavelength selected from 560 to 620 nm).

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

Further, the image display apparatus 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 optical efficiency can be produced.

In addition, the color filter and the image display device manufactured using the yellow curable resin composition according to the present invention have an advantage of improved color reproducibility and optical efficiency.

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

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

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

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

≪ Yellow curable resin composition >

A yellow curable resin composition according to an embodiment of the present invention includes a yellow colorant; And a wavelength absorbing agent having a maximum absorption wavelength of 560 to 620 nm and satisfying the transmittance characteristics of the following formula (1), the color reproducibility and the light efficiency are improved when the color filter and the image display apparatus are manufactured.

[Equation 1]

10%? T (?)? 60%

T (? -20 nm)? 60%

T (? + 20 nm)? 60%

(In the above formula (1)

T is a transmittance (%), and? Is a wavelength selected from 560 to 620 nm).

Yellow colorant

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

In the case of a color filter using quantum dots, a self-luminescent pixel layer is formed on a pixel region so as to emit red light, green light, or blue light, as a self light emitting material, unlike a color filter including a pigment. The self-emission pixel layer absorbs the emitted light and has a self-emission characteristic of emitting red light, blue light, and green light by itself. That is, when light is irradiated to a red quantum dot, a blue quantum dot and a green quantum dot, 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. At this time, the light source of the image display device to which the color filter is mounted uses blue light, and the emission spectrum of red light to green self-emission pixel layer shows the emission spectrum of blue light at 400 to 480 nm due to the blue light Color mixture of self-luminous pixel layers occurs, which occurs seriously in the red to green pixel layers.

In order to prevent the above problems, a yellow coating layer, which is a cured product of a yellow curable resin composition containing a yellow coloring agent, is placed on the red to green pixel layer, whereby a green pixel layer in which green and blue are mixed is colored green, As a result, red light can be extracted from pure green to pure red, and color purity and light efficiency of light emitted can be improved.

The yellow colorant is not particularly limited, and yellow known colorants can be used. For example, any of pigments, dyes and pigments may be used.

Specifically, the color index (CI. Issued by the Society of Dyers and Colors) is given as follows. However, it is preferable that the colorant is a halogen-free colorant in terms of environmental load reduction and human impact. More specifically,

Monoazo pigments: C.I. Pigment Yellow 1, 2, 5, 8, 105, 120, 150, 168, 182, 183, 190;

Pyrazolone azo pigments: C.I. Pigment Yellow 10;

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

Azomethine pigments: C.I. Pigment Yellow 101, 129;

Anthraquinone pigments: C.I. Pigment Yellow 108, 147, 193, 197, 199, 202;

Isoindolinone-based pigment: C.I. Pigment Yellow 109, 110, 139, 173, 185;

Quinoline pigments: C.I. Pigment Yellow 115;

Quinophthalone pigments: C.I. Pigment Yellow 138;

Polycyclic pigment: C.I. Pigment Yellow 148;

Dioxime pigments: C.I. Pigment Yellow 153;

Benzimidazolone pigments: C.I. Pigment Yellow 154, 175, 180, 181;

Heterocyclic Pigment: C.I. Pigment Yellow 192;

Perinone Pigment: C.I. Pigment Yellow 196;

Inorganic pigments: C.I. Pigments 31, 32, 30, 119, 157, 162, 184;

Cyanine pigments; Xanthene pigments; Merocyanine pigments; Dipyrrin pigments; Arylmethine pigments; Acridine pigments; Coumarin-based pigments; Oxazine pigments; A tetrapyrrole pigment, and the like, but the present invention is not limited thereto.

These pigments may be subjected to a surface treatment using a pigment derivative in which a rosin treatment, an acidic group or a basic group is introduced, a surface graft treatment using a polymer compound or the like, a fine particle treatment using sulfuric acid, a cleaning with an organic solvent or water Processing or the like may have been performed.

In particular, among the yellow colorants exemplified above, C.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 in the total yellow curable resin composition. If the content is less than the above range, it is difficult to expect the above-described color purity and optical efficiency improvement effect due to blocking of blue light. On the contrary, even if the content exceeds the above range, It is preferable to use them appropriately.

The yellow colorant in the present invention can be used together with a dispersant, a dispersion aid, and the like as needed.

As the dispersing agent, for example, a suitable dispersing agent such as a cationic, anionic, or nonionic type can be used, but a polymeric dispersant is preferable. Specific examples thereof include acrylic copolymers, polyurethanes, polyesters, polyethyleneimines, polyallylamines, and the like. Dispersing agents such as DisperBYK-2000, DisperBYK-2001, BYK-LPN6919 and BYK-LPN21116 (manufactured by BYK), Solsperse 5000 (manufactured by Lubrizol), and the like are commercially available. DisperBYK-162, DisperBYK-163, DisperBYK-165, DisperBYK-167, DisperBYK-170 and DisperBYK-182 (manufactured by BYK , Solsperse 24000 (manufactured by Lubrizol Corporation) as polyethyleneimine, Ajisper PB821, Ajisper PB822 and Ajisper PB880 (manufactured by Ajinomoto Fine Techno Co., Ltd.) as polyesters.

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

These dispersants may be used alone or in combination of two or more. The content of the dispersing agent may be generally 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 based on 1 part by weight of the yellow colorant. If the content of the dispersing agent is too large, there is a possibility that developability and the like are damaged.

Wavelength absorbing agent

The yellow curable resin composition according to one embodiment of the present invention comprises a wavelength absorbing agent having a maximum absorption wavelength range of 560 to 620 nm and satisfying the transmission characteristics of the following formula (1).

[Equation 1]

10%? T (?)? 60%

T (? -20 nm)? 60%

T (? + 20 nm)? 60%

(In the above formula (1)

T is a transmittance (%), and? Is a wavelength selected from 560 to 620 nm).

As described above, the self-luminescent pixel layer formed in the color filter has a self-luminescent characteristic that absorbs the irradiated light and emits red light, blue light, and green light by itself. That is, when light is irradiated to a red quantum dot, a blue quantum dot and a green quantum dot, 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, An error occurs in a wavelength range where green light emission occurs, and color mixing in 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 preventing color mixing in red light or green light, .

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 characteristic of the formula (1).

The wavelength absorbing agent according to one embodiment of the present invention may include a compound represented by the following formula (1).

[Chemical Formula 1]

(In the 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 specifically, the compounds represented by the above formula (1) include the following compounds.

[Formula 2-1]

[Formula 2-2]

[Formula 2-3]

[Chemical Formula 2-4]

[Chemical Formula 2-5]

[Formula 3-1]

[Formula 3-2]

[Formula 3-3]

[Chemical Formula 3-4]

[Formula 3-5]

The wavelength absorbing agent may be a commercially available wavelength absorbing agent. Specific examples thereof include BD-590 and CA-590, but are not limited thereto.

The wavelength absorbing agent may be contained 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. If the content of the wavelength absorbing agent is less than the above range, color mixing may occur in the wavelength region of red light and green light, resulting in a decrease in luminous efficiency. If the content exceeds the above range, the stability of the pattern may be deteriorated.

The yellow curable resin composition according to one embodiment of the present invention may further include at least one 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 one 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 and functions as a binder resin for solids including a colorant. The alkali-soluble resin functions as a binder resin, and is a binder capable of dissolving in an alkaline developer used in the development of a film using the resin composition Any resin can be used.

The alkali-soluble resin may have an acid value of 20 to 200 (KOH mg / g). At this time, the acid value is a value measured as the amount (mg) of potassium hydroxide necessary for neutralizing 1 g of the acrylic polymer, and is related to the solubility. If the acid value of the alkali-soluble resin is less than the above-mentioned range, it is difficult to secure a sufficient developing rate. Conversely, if the acid value exceeds the above range, the adhesion with the substrate is reduced, and short-circuiting of the pattern tends to occur. A problem occurs.

The alkali-soluble resin may preferably have a weight average molecular weight of 3,000 to 200,000 Da, preferably 5,000 to 100,000 Da, and a molecular weight distribution of 1.5 to 6.0, preferably 1.8 to 4.0, for use as a color filter. Or may be purchased and used. The alkali-soluble resin having the molecular weight and molecular weight distribution in the above range has an advantage of being excellent in the hardness mentioned above and having a high residual film ratio as well as excellent solubility of the non-exposed portion in the developer and improving the resolution.

The alkali-soluble resin may be an acrylic monomer having an unsaturated double bond. In the case of a dispersion resin having an acid value, it is possible to prepare a copolymer by copolymerizing a monomer having a carboxyl group and an unsaturated bond and a monomer having an unsaturated bond capable of copolymerization therewith.

Specific examples of the monomer having an unsaturated bond with the carboxyl group 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; (meth) acrylates of a polymer having a carboxyl group and a hydroxyl group at both terminals such as? -carboxypolycaprolactone mono (meth) acrylate, and the like.

More specifically, it is possible to use acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride, fumaric acid or alkyl ester of maleic acid. The alkyl maleic acid ester includes monomethyl maleic acid, ethyl 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.

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

The copolymerizable monomer may be an aromatic vinyl compound, an unsaturated carboxylic acid ester compound, an unsaturated carboxylic acid aminoalkyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated ether compound, a vinyl cyanide At least one member selected from the group consisting of a compound, an unsaturated imide compound, an aliphatic conjugated diene compound, a macromonomer having a monoacryloyl group or monomethacryloyl group at the end of a molecular chain, a vulcanizable monomer, and combinations thereof Do.

Specifically, the copolymerizable monomers include styrene, vinyltoluene,? -Methylstyrene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl 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; 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; (Meth) acrylate, cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0.2.6] decan- Alicyclic (meth) acrylates such as chloropentanyloxyethyl (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-based compounds such as methylphenyl maleimide, Np-methylphenyl maleimide, No-methoxyphenyl maleimide, Nm-methoxyphenyl maleimide and Np-methoxyphenyl maleimide; Unsaturated amide compounds such as (meth) acrylamide and N, N'-dimethyl (meth) acrylamide; 3- (methacryloyloxymethyl) -2-trifluoromethyl oxetane, 3- (methacryloyloxymethyl) oxetane, 3- (methacryloyloxymethyl) 2- (methacryloyloxymethyl) oxetane, 2- (methacryloyloxymethyl) -4-trifluoromethyloxetane and the like Unsaturated oxetane compounds, and the like.

The content of the alkali-soluble resin may be 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 of the yellow curable resin composition. If the content of the alkali-soluble resin falls within the above range, it is easy to form a yellow coating layer. In the process including the developing step, reduction of the film thickness of the pixel portion of the exposed portion is prevented during development, There is an advantage.

Photopolymerization  compound

The yellow curable resin composition according to one embodiment of the present invention may further comprise a photopolymerizable compound.

The photopolymerizable compound is not particularly limited as long as it is a compound capable of polymerizing under the action of a photopolymerization initiator described later. Preferably, a monofunctional photopolymerizable compound, a bifunctional photopolymerizable compound or a trifunctional or higher functional polyfunctional photopolymerizable compound .

Specific examples of the monofunctional photopolymerizable compound include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, N- And vinyl pyrrolidone. Commercially available products include Aronix M-101 (Toagosei), KAYARAD TC-110S (Nippon Kayaku), and Viscot 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 (Acryloyloxyethyl) ether of bisphenol A and 3-methylpentanediol di (meth) acrylate. Commercially available products include Aronix M-210, M-1100 and M-1200 , KAYARAD HDDA (Nippon Kayaku), Viscoat 260 (Osaka Yuki Kagaku Kogyo), AH-600, AT-600 or UA-306H (Kyoeisha Chemical Co., Ltd.) and the like.

Specific examples of the polyfunctional photopolymerizable compound having three or more functional groups include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate (Meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (Meth) acrylate such as Aronix M-309, TO-1382 (Doagosei), KAYARAD TMPTA, KAYARAD DPHA or KAYARAD DPHA-40H (Nippon Kayaku), and the like.

Among the photopolymerizable compounds exemplified above, trifunctional or more (meth) acrylate esters and urethane (meth) acrylate are particularly preferable because they are excellent in polymerizability and can improve the strength.

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

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

Light curing Initiator

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

The photopolymerization initiator can be used without particular limitation as long as it can polymerize the above-mentioned photopolymerizable compound. Specifically, from the viewpoints of polymerization characteristics, initiation efficiency, absorption wavelength, availability or price, a group consisting of an acetophenone compound, a benzophenone compound, a triazine compound, a nonimidazole compound, an oxime compound and a thioxanone compound It is preferable to use at least one compound selected from

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

Examples of the benzophenone compound include benzophenone, methyl 0-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3 ', 4,4'-tetra tert-butylperoxycarbonyl) benzophenone or 2,4,6-trimethylbenzophenone.

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

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

Specific examples of the oxime compounds include o-ethoxycarbonyl- [alpha] -oxyimino-1-phenylpropan-1-one and the like. Commercially available products include OXE01 and OXE02 of BASF.

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

Further, other photopolymerization initiators and the like may be further used in combination within the range not impairing the effects of the present invention. Examples thereof include a benzoin compound and an anthracene compound. These compounds may be used alone or in combination of two or more.

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

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

Other examples include 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 10-butyl-2-chloroacridone, 2-ethyl anthraquinone, benzyl-9,10-phenanthrenequinone, camphorquinone, phenylclyoxylic acid A methyl or a titanocene compound may be used in combination as a photopolymerization initiator.

The photopolymerization initiator may be contained in an amount of 0.1 to 40% by weight, preferably 0.5 to 35% by weight, more preferably 1 to 30% by weight based on 100% by weight of the total solid content of the yellow curable resin composition. When the photopolymerization initiator is contained within the above range, the yellow curable resin composition is highly sensitized and the exposure time is shortened, so that productivity is improved and high resolution can be maintained. Further, there is an advantage that the strength of the pixel portion formed using the composition of the above-described condition and the smoothness of the surface of the pixel portion are improved.

In order to improve the sensitivity of the yellow curable resin composition, a photopolymerization initiator may further be added. By containing the photopolymerization initiator, the sensitivity can be further increased and the productivity can be improved.

As the photopolymerization initiation auxiliary, for example, at least one compound selected from the group consisting of an amine compound, a carboxylic acid compound and an organic sulfur compound having a thiol group can be preferably used.

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

The carboxylic acid compound is preferably an aromatic heteroacetic acid, and more specifically, it is preferably an aromatic heteroaromatic acid such as 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.

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

Further, commercially available products 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 ion polymerization initiator can be easily obtained as a commercial product, and examples thereof include "Kayarad PCI-220", "Kayarad PCI-620" (trade name, manufactured by Nippon Kayaku Co., "ADEKA OPTMA SP-150", "ADEKA OPTMA SP-170" (trade name, manufactured by ADEKA K.K.), "CI-6990" [manufactured by Union Carbide Co., DPI-101 "," CIT-1370 "," CIT-1682 "," CIP-1866S "," CIP-2048S "," CIP- 2064S " , "DPI-102", "DPI-103", "DPI-105", "MPI-103", "MPI-105", "BBI- TPS-103, TPS-105, MDS-103, MDS-105, DTS-102, DTS- 103 "(manufactured by Midori Kagaku Co., Ltd.) and" PI-2074 "(manufactured by Rhodia).

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

The photopolymerization initiator may be used in the same amount as the photopolymerization initiator. When the photopolymerization initiator is used in an amount as described above, the sensitivity of the yellow curable resin composition containing the photopolymerization initiator increases and the productivity of the color filter formed using the composition is improved Effect.

solvent

The yellow curable resin composition according to one embodiment of the present invention may further comprise a solvent.

The solvent is not particularly limited and may be an organic solvent commonly used in the art. The solvent used in the conventional yellow curable resin composition is not particularly limited so long as it is effective in dissolving other components. Specific examples thereof include ethers, aromatic hydrocarbons, ketones, alcohols, esters or amides And more specifically, ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethylene glycol monobutyl ether; Diethylene glycol 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, methoxybutyl 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; 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? -butyrolactone; And the like. These may be used alone or in combination of two or more.

Since the viscosity of the solvent may vary depending on the coating method or apparatus, the content of the yellow curable resin composition having the above-mentioned composition is appropriately adjusted so that the concentration thereof is 5 to 90% by weight, preferably 15 to 80% by weight. Such a content is selected in consideration of dispersion stability of the composition and easiness of process in the production process (for example, applicability).

additive

The yellow curable resin composition according to one embodiment of the present invention may contain fillers, other polymer compounds, surfactants, adhesion promoters, antioxidants, ultraviolet absorbers, anti-aggregation agents, curing agents And the like.

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

Specific examples of the other polymer compound include curable resins such as epoxy resins and maleimide resins, and thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, polyfluoroalkyl acrylate, polyester, and polyurethane. .

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 alkylpereethers, polyethylene glycol diesters, sorbitan fatty phase esters, Modified polyesters, tertiary amine-modified polyurethanes, polyethyleneimines and the like. In addition, KP (manufactured by Shin-Etsu Chemical Co., Ltd.), POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.) (Manufactured by Tohmec Products), MEGAFAC (manufactured by Dainippon Ink and Chemicals, Incorporated), Flourad (manufactured by Sumitomo 3M Limited), Asahi guard, Surflon (manufactured by Asahi Glass Co., Ltd.), SOLSPERSE (manufactured by Genene), EFKA (manufactured by EFKA Chemical) and PB 821 (manufactured by Ajinomoto Co., Ltd.).

Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2 (aminoethyl) - (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3- Trimethoxysilane, and the like.

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-chlorobenzothiazole and alkoxybenzophenone. Specific examples of the anti-aggregation agent include sodium polyacrylate.

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

The epoxy compound is not particularly limited and includes, for example, a bisphenol A epoxy resin, a hydrogenated bisphenol A epoxy resin, a bisphenol F epoxy resin, a hydrogenated bisphenol F epoxy resin, a Novolak epoxy resin, Based epoxy resin, a glycidyl ester-based resin, a glycidylamine-based resin, or a brominated derivative of such an epoxy resin; Aliphatic, alicyclic or aromatic epoxy compounds other than epoxy resins and brominated derivatives thereof; Butadiene (co) polymeric epoxide; Isoprene (co) polymeric epoxide; Glycidyl (meth) acrylate (co) polymers; Triglycidyl isocyanurate and the like.

The oxetane compound is not particularly limited and includes, for example, carbonate bisoxetane, xylene bisoxetane, adipate bisoxetane, terephthalate bisoxetane, and cyclohexanedicarboxylic acid bisoxetane. have.

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

Representative examples are 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; And tetraphenylboron salts such as tetraphenylphosphonium tetraphenylborate and triphenylphosphine tetraphenylborate.

The preparation of the above-mentioned yellow curable composition is not particularly limited in the present invention, but follows the known production method of the curable composition.

For example, a yellow colorant is mixed with a solvent in advance and dispersed using a bead mill or the like until the average particle diameter of the colorant becomes about 0.2 μm or less. At this time, a pigment dispersant may be used if necessary, and some or all of the alkali-soluble resin may be blended. The wavelength absorbing agent, the remainder of the alkali-soluble resin, the photopolymerizable compound and the photopolymerization initiator, other components to be used if necessary, and the additional solvent, if necessary, are added to the obtained dispersion (hereinafter, also referred to as mill base) To obtain a desired yellow curable resin composition.

The yellow curable resin composition thus prepared can be used to produce a color filter by wet coating. In this case, the wet coating method can be applied to a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater) May be used.

<Color filter>

Another aspect of the present invention is a color filter comprising a cured product of the yellow curable resin composition described above.

The pixel layer of the color filter is a self-luminescent pixel layer including a quantum dot. In order to absorb the blue luminescence spectrum, the yellow colorant is not mixed with the quantum dots in the self-luminescent pixel layer, do. That is, the light self-emitted by the quantum dot emits light of a specific wavelength. When the yellow colorant is used in the self-luminescent pixel layer at this time, red, blue, and green self-emitted light are not emitted to the outside of the pixel layer. Further, since the yellow coloring agent is intended to extinguish red or green blue light that has already been emitted, it should be located on the self-luminescent pixel layer with respect to the light source, and when the light source and the self- none.

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

Referring to Figures 1 and 2, the color filter comprises a substrate 11; A yellow coating layer 13 formed on the substrate 11; And a self-emission pixel layer (15) formed on the yellow coating layer (13).

At this time, the yellow coating layer 13 is made of the above-described yellow curable resin composition, and more preferably, only the red and green pixel layers 15a and 15b defined by the partition walls 51a, 51b and 51c And is located on the side opposite to the light source 101. [

In the yellow coating layer 13, red is displayed only 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 are extracted Thereby improving the overall color purity and light efficiency.

The above effect is highly dependent on the content of the yellow coloring agent contained in the yellow coating layer 13 to some extent, and is slightly influenced by the thickness. For example, the yellow coating layer 13 is formed to a thickness of 1 to 5 mu m. If the thickness is less than the above-mentioned range, the above-described effect can not be ensured and even if the thickness exceeds the above range, a great effect can not be obtained.

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

The self-luminescent pixel layer (15) is a layer containing a quantum dot and includes at least one selected from the group consisting of a photoluminescence quantum dot, an alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator and a solvent. . The type and content of the alkali-soluble resin, the photopolymerizable compound, the photopolymerization initiator, and the solvent may be the same as those mentioned above for the yellow curable resin composition.

The quantum dot is a nano-sized semiconductor material. The atoms form molecules, and the molecules form a cluster of small molecules called clusters to form nanoparticles. These nanoparticles are called quantum dots, especially when they have semiconductor properties. The quantum dot emits energy according to the energy band gap itself when it reaches the excited state by receiving energy from the outside.

The color filter includes such optical luminescence quantum dot particles, and the color filter manufactured from the color filter can emit light (optical luminescence) by light irradiation.

The quantum dot is not particularly limited as long as it is a quantum dot that can emit light by stimulation by light, for example, a group II-VI semiconductor compound; III-V semiconductor compound; IV-VI semiconductor compound; Group IV elements or compounds containing them; And combinations thereof. These may be used alone or in combination of two or more.

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

Further, the quantum dots may have a single homogeneous structure; A dual structure such as a core-shell, gradient structure or the like; Or a mixed structure thereof.

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

The color filter of the present invention is characterized in that the color filter of the present invention includes a quantum dot indicating a red color, a quantum dot representing a green color, and a quantum dot representing a blue color, such that the colored photosensitive resin composition used for producing a typical color filter includes red, And may be at least one selected from the above-mentioned red, green, blue, and combinations thereof.

The quantum dot can 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 naturally coordinates to the surface of the quantum dot crystal to serve as a dispersing agent to control crystal growth. Therefore, the metal organic chemical vapor deposition (MOCVD) or molecular molecular epitaxy (MBE) beam epitaxy), it is possible to control the growth of nanoparticles through an easier and less expensive process.

The self-luminescent photosensitive resin composition containing such a quantum dot preferably contains 3 to 80% by weight of a quantum dots, 5 to 80% by weight of an alkali soluble resin, 5 to 70% by weight of a photopolymerizable compound, 0.1 to 20% by weight of a photopolymerization initiator %. &Lt; / RTI &gt; Further, it may further include the above-mentioned additives.

The color filter may be manufactured by the following method as an example, but the present invention is not limited thereto, and the steps described below may be changed in accordance with the needs of the designer (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) to form the self-emission pixel layer 15 in the pixel region.

The barrier ribs 51a, 51b, and 51c, the self-emission pixel layer 15, and the yellow coating layer 13 may be formed by applying each composition and exposing, developing, and curing the composition in a predetermined pattern.

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 not only to a general liquid crystal display 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 apparatus 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 emitted light of the light source is not particularly limited when applied to an image display apparatus, but a light source that emits blue light is preferable from the viewpoint of better color reproducibility

According to another embodiment of the present invention, the image display apparatus of the present invention may include a color filter including only a pattern layer of two colors of 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 not containing quantum dot particles.

In the case where only the pattern layer of two colors is provided, a light source that emits light having a wavelength that represents the remaining color that is not included can be used. For example, when a red pattern layer and a green pattern layer are included, a light source that emits blue light can be used. In such a case, red quantum dot particles emit red light and rust quantum dot particles emit green light, and the transparent pattern layer transmits blue light as it is and exhibits blue color.

The image display device has excellent light efficiency, exhibits high luminance, and is excellent in color reproducibility.

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

Manufacturing example  1 to 4

Manufacturing example  One: CdSe / ZnS Core shell  Structural Optical luminescence  green Qdot  Particle synthesis

0.4 mmol of CdO, 4 mmol of zinc acetate and 5.5 mL of oleic acid were placed in a reactor together with 20 mL of 1-octadecene and heated at 150 ° C. for reaction. The reaction was then left under vacuum at 100 mTorr for 20 minutes to remove the acetic acid formed by the displacement of oleic acid into zinc.

Then, a transparent mixture was obtained by applying heat at 310 DEG C, and after maintaining the temperature at 310 DEG 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 Se And S solution were rapidly injected into a reactor containing Cd (OA) ₂ and Zn (OA) ₂ solutions.

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

Then, the precipitate was precipitated with ethanol, and the quantum dots were separated using a centrifugal separator. The excess impurities were washed with chloroform and ethanol, whereby particles having a core particle size and a shell thickness summed to 3 to 5 nm, which were stabilized with oleic acid Green CdSe (core) / ZnS (shell) structure was obtained.

Manufacturing example  2: Synthesis of alkali-soluble resin

A flask equipped with a stirrer, a thermometer reflux condenser, a dropping funnel and a nitrogen inlet tube was provided with 45 parts by weight of N-benzylmaleimide, 45 parts by weight of methacrylic acid, 10 parts by weight of tricyclodecyl methacrylate, 4 parts by weight of butyl peroxy-2-ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate were charged and stirred to prepare a monomer dropping tank. 6 parts by weight of n-dodecanediol, 15 parts by weight of propylene glycol monomethyl ether Acetate were added and stirred to prepare a chain transfer agent dropping lot.

Thereafter, 395 parts by weight of propylene glycol monomethyl ether acetate was introduced into the flask, the atmosphere in the flask was changed to nitrogen in air, and the temperature of the flask was elevated to 90 DEG C with stirring.

Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The temperature was raised to 110 DEG C for 1 hour and maintained for 3 hours. Thereafter, a gas introduction tube was introduced, and a bubble of oxygen / nitrogen = 5/95 (v / v) I started the ring.

Then, 10 parts by weight of glycidyl methacrylate, 0.4 part by weight of 2,2'-methylenebis (4-methyl-6-t-butylphenol) and 0.8 part by weight of triethylamine were charged into a flask, The reaction was continued and then cooled to room temperature to obtain an alkali-soluble resin having a solid content of 29.1% by weight, a weight average molecular weight of 32,000 and an acid value of 114 mgKOH / g.

Manufacturing example  3: Self-luminous The pixel layer  For forming Self-luminous  Preparation of Photosensitive Resin Composition

The components were mixed as shown in Table 1, diluted with propylene glycol monomethyl ether acetate so that the total solid content became 20% by weight, and sufficiently stirred to obtain a self-luminescent photosensitive resin composition.

Composition (% by weight) Production example 3-1 Production example 3-2 Qdot 1-1 ¹⁾ 30 - 1-2 ²⁾ - 30 Photopolymerizable compound ^{3 )} 30 30 Polymerization initiator ^{4 )} 5 5 Alkali-soluble resin ^{5 )} 35 35 1) CdSe (core) / ZnS (shell) structure quantum dots of the production example 1
2) Lumidot ^TM CdSe / ZnS 640 (manufactured by Aldrich)
3) Dipentaerythritol pentaacrylate succinic acid monoester (TO-1382, Donga Synthetic Agent)
4) Irgacure-907 (manufactured by Ciba)
5) The alkali-soluble resin of Production Example 2

Example  1 to 6 and Comparative Example  1 to 2

After mixing the components as shown in Table 2 below, the mixture was diluted with propylene glycol monomethyl ether acetate so that the total solid content was 20% by weight, and sufficiently stirred to obtain a yellow curable resin composition.

Composition (% by weight) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 yellow
coloring agent A1-1 ¹⁾ 29 28 25 - - - 30 - A1-2 ²⁾ - - - 29 28 25 - 30 wavelength
Absorbent A2-1 ³⁾ One 2 5 - - - - - A2-2 ⁴⁾ - - - One 2 5 - - Photopolymerizable compound ^{5 )} 30 30 30 30 30 30 30 30 Photopolymerization initiator ^{6 )} 5 5 5 5 5 5 5 5 Alkali-soluble resin ^{7 )} 35 35 35 35 35 35 35 35 1) CI Pigment Yellow 138 (manufactured by Toyo Ink)
2) CI Pigment Yellow 185 (manufactured by BASF)
3) CA-590 (manufactured by Kyowa Ink)
4) BD-590 (manufactured by Kyowa Ink)
5) dipentaerythritol pentaacrylate succinic acid monoester
(5-functional photopolymerizable compound containing carboxylic acid) (TO-1382, Dong-A Synthetic Agent)
6) Irgacure-907 (manufactured by Ciba)
7) The alkali-soluble resin of Production Example 2

Experimental Example  1: Permeation characteristics of yellow curable resin composition

The permeation characteristics of the yellow curable resin compositions prepared in Examples 1 to 6 and Comparative Examples 1 and 2 were examined in the following manner.

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

Then, light was irradiated at an exposure dose of 200 mJ / cm 2 (365 nm) using an ultra-high pressure mercury lamp (trade name: USH-250D) manufactured by Ushio DENKI Co., Ltd., and no special optical filter was used. And then heated in a heating oven at 150 캜 for 10 minutes to prepare a yellow coating layer having a thickness of 2 탆

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

division Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative Example 2 T% (? = 590 nm) 40.5 37.9 30.1 41.1 36.9 28.3 96.4 97.0 T% (? = 570 nm) 80.5 78.8 69.2 81.4 76.4 64.8 97.8 97.7 T% (? = 610 nm) 76.9 75.0 66.8 77.8 73.2 62.1 98.6 98.7

In the case of the yellow coating layers (Examples 1 to 6) made of the yellow curable resin composition of the present invention, the wavelength absorbing agent of the present invention is included in Table 3, so that the yellow coating layer made of the yellow curable resin composition of the present invention (Comparative Examples 1 and 2), it can be confirmed that the transmittance is decreased because the wavelength absorption rate is increased.

Manufacturing example  4: Manufacture of color filters

Manufacturing example  4-1 to 4-6 and Manufacturing example  4-13 to 4-14

(1) Formation of yellow coating layer

First, the yellow curable resin compositions of Examples 1 to 6 and Comparative Examples 1 and 2 were coated on a 100 × 100 mm glass substrate (Corning® EAGLE XG® Slim, Corning) by a spin coating method, Lt; 0 &gt; C for 3 minutes to form a thin film.

Then, light was irradiated at an exposure dose of 200 mJ / cm 2 (365 nm) using an ultra-high pressure mercury lamp (trade name: USH-250D) manufactured by Ushio DENKI Co., Ltd., and no special optical filter was used.

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

(2) Self-luminous pixel layer formation

The self-luminous photosensitive resin composition prepared in Preparation Example 3-1 was used to form a self-luminous pixel layer having a thickness of 5 μm on each of the yellow coating layers prepared in the above (1) in the same manner as in the above (1) To prepare Production Examples 4-1 to 4-6 and Production Examples 4-13 to 4-14.

Manufacturing example  4-7 to 4-12 and Manufacturing example  4-15 to 4-16

A color filter was prepared in the same manner as in Production Examples 4-1 to 4-6 and Production Examples 4-13 to 4-14 except that the self-luminescent photosensitive resin composition for forming the self-luminescent pixel layer was changed to Production Example 3-2 To prepare Production Examples 4-7 to 4-12 and Production Examples 4-15 to 4-16.

Experimental Example  2: Measurement of luminescence intensity of color filter

The light emission intensity of the color filter manufactured in Production Example 4 was measured as follows.

The light-converted area was measured using XLamp® XRE-Roy (Royal blue) manufactured by Cree, which had a maximum absorption wavelength of 450 nm as a blue light source, and the blue light source was arranged in a direction opposite to the yellow coating layer. Production Examples 4-7 to 4-12 and Production Examples 15 to 16 were performed in the same manner as in Production Examples 4-6 and Production Examples 13 to 14 except that the light source region of 450 nm and the light conversion region of 520 nm were used. The luminescence intensity was measured using an Ocean Optics spectrometer.

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

result yellow
Coating layer Self-luminous
The pixel layer Intensity 450nm (blue) 520nm (green) 640nm (red) Production Example 4-1 Example 1 Production example 3-1 35 39,940 - Production example 4-2 Example 2 Production example 3-1 20 45,940 - Production Example 4-3 Example 3 Production example 3-1 17 42,950 - Production Example 4-4 Example 4 Production example 3-1 24 41,940 - Production Example 4-5 Example 5 Production example 3-1 13 45,130 - Production Example 4-6 Example 6 Production example 3-1 18 43,130 - Production Example 4-7 Example 1 Production example 3-2 48 - 39,130 Production Example 4-8 Example 2 Production example 3-2 43 - 42,130 Production Example 4-9 Example 3 Production example 3-2 40 - 43,130 Production Example 4-10 Example 4 Production example 3-2 48 - 40,130 Production Example 4-11 Example 5 Production example 3-2 41 - 43,130 Production Example 4-12 Example 6 Production example 3-2 32 - 43,930 Production Example 4-13 Comparative Example 1 Production example 3-1 120 29,400 - Production Example 4-14 Comparative Example 2 Production example 3-1 80 27,300 - Production Example 4-15 Comparative Example 1 Production example 3-2 130 - 28,400 Production Example 4-16 Comparative Example 2 Production example 3-2 420 - 25,600

Referring to Table 4, in the case of the color filter including the yellow coating layer of Examples 1 to 6 including the wavelength absorbing agent of the present invention (Production Examples 4-1 to 4-12), the emission intensity at 450 nm of the blue light source region was 50 or less, and the emission intensity at 520 nm, which is a green emission region, was 40,000 or more, and the emission intensity at 640 nm, which is a red emission region, was 35,000 or more.

In contrast, in the case of the color filters (Production Examples 4-13 to 4-16) containing the yellow coating layer of Comparative Examples 1 and 2 which did not include the wavelength absorbing agent of the present invention, the emission intensity at 450 nm of the blue light source region was 80 As a result, it is confirmed that there is a problem that the blocking property is lowered and that the emission intensity of 520 nm which is a green emission region and the emission intensity of 640 nm which is a red emission region are remarkably decreased to 30,000 or less.

11: substrate
13: yellow coating layer
15:
15a: Red pixel area
15b: green pixel region
51a, 51b, 51c:
101: Light source

Claims (9)

Yellow colorant; And a wavelength absorbing agent having a maximum absorption wavelength of 560 to 620 nm and satisfying a transmission property of the following formula (1): &lt; EMI ID =
[Equation 1]
10%? T (?)? 60%
T (? -20 nm)? 60%
T (? + 20 nm)? 60%
(In the above formula (1)
T is the transmittance (%), and? Is the wavelength selected from 560 to 620 nm). The method according to claim 1,
Wherein the yellow curable resin composition further comprises at least one selected from the group consisting of an alkali soluble resin, a photopolymerizable compound, a photopolymerization initiator, a solvent and an additive. The method according to claim 1,
Wherein the wavelength absorbing agent comprises a compound represented by the following formula (1).
[Chemical Formula 1]

(In the 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 method according to claim 1,
Wherein the yellow coloring agent is contained in an amount of 5 to 80% by weight based on 100% by weight of the total of the yellow curable resin composition. The method 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 total of the yellow curable resin composition. A yellow coating layer comprising a cured product of the yellow curable resin composition of any one of claims 1 to 5; And a self-emission pixel layer formed on the yellow coating layer and containing quantum dots. The method according to claim 6,
Wherein the yellow coating layer is formed on the red pixel layer or the green pixel layer. An image display device comprising the color filter of claim 6. 9. The method of claim 8,
Wherein the color filter is arranged in a direction in which the yellow coating layer is opposed to the light source.

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