KR102386493B1 - Colored photosensitive resin composition, color filter and image display device using the same - Google Patents

Abstract

(상기 화학식 1에서, R₁은 C₁ 내지 C₅의 알킬렌기이다).
[화학식 2]

(상기 화학식 2에서, R₂ 내지 R₆은 C₁ 내지 C₅의 알킬기이다).The present invention comprises a pigment dispersion containing a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent, wherein the colorant comprises CI Pigment Blue 15:6 and CI Pigment Red 177, wherein the CI Pigment Red 177 is included in less than 20% by weight based on 100% by weight of the total pigment dispersion, and the alkali-soluble resin is a copolymer in which a compound represented by the following Chemical Formula 1 and a compound represented by the following Chemical Formula 2 are copolymerized, It relates to a colored photosensitive resin composition having excellent luminance and excellent reliability such as no increase in viscosity even when stored for a long time, a color filter including the same, and an image display device.
[Formula 1]

(In Formula 1, R ₁ is a C ₁ to C ₅ alkylene group).
[Formula 2]

(In Formula 2, R ₂ To R ₆ Are C ₁ To C ₅ An alkyl group).

Description

Colored photosensitive resin composition, color filter and image display device including the same

The present invention relates to a colored photosensitive resin composition, a color filter comprising the same, and an image display device.

A color filter is widely used in various display devices such as an imaging device and a liquid crystal display (LCD), and its application range is rapidly expanding. The color filter used in the image pickup device, liquid crystal display device, etc. is made of a coloring pattern of three colors of red, green, and blue, or yellow, magenta and cyan ( It consists of a coloring pattern of 3 colors of Cyan).

The coloring pattern of each of the color filters is generally formed using a colored photosensitive resin composition including a colorant such as a pigment or dye, a binder resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent. The coloring pattern processing using the colored photosensitive resin composition is generally performed by a lithography process.

In recent years, large-size liquid crystal display devices are rapidly increasing, and as their use is expanded from notebook monitors to desktop monitors, LCD TVs, etc., color filters with excellent color reproducibility and high contrast are required. In response to these needs, research is being conducted to increase the color reproducibility and maintain the color thickness of the color pattern for improved color characteristics. Research for the manufacture of color filters with excellent reliability such as formulation and storage is in progress.

In this regard, Korean Patent Laid-Open Publication No. 10-2016-0061060 discloses (A) a binder resin; (B) a colorant; (C) a photopolymerizable monomer represented by Formula 1; (D) a photoinitiator; (E) an epoxy resin; (F) a curing accelerator; And (G) is described with respect to the photosensitive resin composition excellent in chemical resistance and heat resistance by including a solvent.

However, there is a problem in that the disclosed patent has improved chemical resistance and heat resistance but is not aware of a method for improving luminance or color reproducibility.

Republic of Korea Patent Publication No. 10-2016-0061060 (2016.05.31.)

An object of the present invention is to provide a colored photosensitive resin composition having excellent luminance and excellent reliability, such as no increase in viscosity even when stored for a long time, in order to solve the above problems.

The colored photosensitive resin composition of the present invention for achieving the above object includes a pigment dispersion containing a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent, and the colorant contains C.I. Pigment Blue 15:6 and C.I. Pigment Red 177, wherein the C.I. Pigment Red 177 is included in less than 20% by weight based on 100% by weight of the total pigment dispersion, and the alkali-soluble resin is a copolymer in which a compound represented by the following Chemical Formula 1 and a compound represented by the following Chemical Formula 2 are copolymerized. do.

[Formula 1]

(In Formula 1, R ₁ is a C ₁ to C ₅ alkylene group).

[Formula 2]

(In Formula 2, R ₂ to R ₆ are hydrogen atoms).

The color filter of the present invention is characterized in that it contains a cured product of the above-described colored photosensitive resin composition.

The image display apparatus of the present invention is characterized in that it includes the above-described color filter.

The colored photosensitive resin composition of the present invention has excellent luminance and solvent resistance, and has excellent reliability such as no increase in viscosity even when stored for a long time.

The color filter of the present invention has advantages of excellent luminance and solvent resistance.

The image display device of the present invention has advantages of excellent luminance and solvent resistance.

In the present invention, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

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

<Colored photosensitive resin composition>

The colored photosensitive resin composition according to an aspect of the present invention includes a pigment dispersion containing a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent, and the colorant includes C.I. Pigment Blue 15:6 and C.I. Pigment Red 177, wherein the C.I. Pigment Red 177 is included in less than 20% by weight based on 100% by weight of the total pigment dispersion, and the alkali-soluble resin is a copolymer in which a compound represented by the following Chemical Formula 1 and a compound represented by the following Chemical Formula 2 are copolymerized. By doing so, it has excellent storage stability, such as excellent brightness and solvent resistance, and no increase in viscosity even when stored for a long time.

[Formula 1]

(In Formula 1, R ₁ is a C ₁ to C ₅ alkylene group.)

[Formula 2]

(In Formula 2, R ₂ to R ₆ are hydrogen atoms.)

pigment dispersion

The colored photosensitive resin composition according to an embodiment of the present invention includes a pigment dispersion containing a colorant, and in this case, the colorant may mean a pigment or a dye.

coloring agent

The colored photosensitive resin composition according to an aspect of the present invention includes a pigment dispersion containing a colorant, wherein the colorant is C.I. Pigment Blue 15:6 and C.I. Pigment Red 177, wherein the C.I. Pigment Red 177 has the advantage of improving luminance or solvent resistance by being included in an amount of less than 20% by weight based on 100% by weight of the total pigment dispersion.

According to one embodiment of the present invention, the C.I. The content of Pigment Red 177 may be preferably included in an amount of less than 15% by weight, more preferably less than 10% by weight, based on 100% by weight of the total pigment dispersion. As such, C.I. When the content of Pigment Red 177 satisfies the content range suggested in the present invention, there is an advantage in that the luminance and solvent resistance of the colored photosensitive resin composition including the same are excellent, and when it is outside the above range, the luminance or solvent resistance may be reduced .

The pigment dispersion contained in the colored photosensitive resin composition of the present invention is a kind of pigment, the C.I. Pigment Blue 15:6 and C.I. A colorant other than Pigment Red 177 may be further included, and the further included colorant may be at least one selected from the group consisting of pigments and dyes to be described later.

As the pigment, organic or inorganic pigments generally used in the art may be used. As the pigment, various pigments used in printing inks, inkjet inks, etc. may be used, and specifically, water-soluble azo pigments, insoluble azo pigments, phthalocyanine pigments, quinacridone pigments, isoindolinone pigments, isoindoline Pigments, perylene pigments, perinone pigments, dioxazine pigments, anthraquinone pigments, dianthraquinonyl pigments, anthrapyrimidine pigments, anthanthrone pigments, indanthrone pigments, pravanthrone pigments, pyranthrone (pyranthrone) pigment, diketopyrroropyrrole pigment, etc. are mentioned. Examples of the inorganic pigment include metal compounds such as metal oxides and metal complex salts, and specifically, oxides of metals such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, zinc, antimony, and carbon black Or a composite metal oxide etc. are mentioned. In particular, the organic and inorganic pigments include compounds classified as pigments in the color index (published by The Society of Dyers and Colorists), and more specifically, the color index (C.I.) number of Pigments may be mentioned, but are not necessarily limited thereto, and these may be used alone or in combination of two or more.

C.I. Pigment Yellow 13, 20, 24, 31, 53, 83, 86, 93, 94, 109, 110, 117, 125, 137, 138, 139, 147, 148,150, 153, 154, 166, 173, 180 and 185 ;

C.I. Pigment Orange 13, 31, 36, 38, 40, 42, 43, 51, 55, 59, 61, 64, 65 and 71;

C.I. Pigment Red 9, 97, 105, 122, 123, 144, 149, 166, 168, 176, 180, 192, 208, 215, 216, 224, 242, 254, 255 and 264 C.I. Pigment Violet 14, 19, 23, 29, 32, 33, 36, 37 and 38;

C.I. Pigment Blue 15 (15:3, 15:4, etc.), 21, 28, 60, 64 and 76;

C.I. Pigment Green 7, 10, 15, 25, 36, 47, 58, 59, 62 and 63;

C.I. Pigment Brown 28;

C.I. Pigment Black 1 and 7 may be mentioned, but is not limited thereto, and these may be used alone or in combination of two or more.

The above-exemplified C.I. Among the pigment pigments, C.I. Pigment Yellow 138, C.I. Pigment Yellow 139, C.I. Pigment Yellow 150, C.I. Pigment Yellow 185, C.I. Pigment Orange 38, C.I. Pigment Red 122, C.I. Pigment Red 166, C.I. Pigment Red 208, C.I. Pigment Red 242, C.I. Pigment Red 254, C.I. Pigment Red 255, C.I. Pigment Violet 23, C.I. Pigment Blue 15:3, C.I. Pigment Green 7, C.I. Pigment Green 36 and C.I. A pigment selected from the group consisting of Pigment Green 58 may be preferably used, but is not limited thereto.

The content of the pigment may be 5 to 50% by weight, specifically 10 to 45% by weight, based on 100% by weight of the total pigment dispersion. When the content of the pigment is within the above range, there is an advantage in that the viscosity is low, the storage stability is excellent, and the dispersion efficiency is high, which is effective in increasing the contrast ratio.

The dye may be used without limitation as long as it has solubility in organic solvents. Preferably, it is preferable to use a dye that has solubility in organic solvents and can secure reliability such as solubility in alkali developer, solvent resistance, and stability over time.

As the dye, an acid dye having an acid group such as sulfonic acid or carboxylic acid, a salt of an acid dye and a nitrogen-containing compound, a sulfonamide compound of an acid dye, and derivatives thereof may be used. In addition, azo-based, xanthene-based, phthalocyanine Acid dyes and derivatives thereof can also be selected.

Preferably, the dye is a compound classified as a dye in the color index (published by The Society of Dyers and Colorists), or a known dye described in a dyeing note (color dye).

As a specific example of the dye, C.I. As a solvent dye,

C.I. yellow dyes such as solvent yellow 4, 14, 15, 16, 21, 23, 24, 38, 56, 62, 63, 68, 79, 82, 93, 94, 98, 99, 151, 162, 163;

C.I. Green dyes such as Solvent Green 1, 3, 4, 5, 7, 28, 29, 32, 33, 34, 35, etc. may be mentioned, but are not limited thereto, and these may be used alone or in combination of two or more. can be used

The aforementioned C.I. Among solvent dyes, C.I. Solvent Yellow 14, 16, 21, 56, 151, 79, 93 are preferred, of which C.I. Solvent Yellow 21, 79 may be more preferable, but is not limited thereto.

Also, C.I. as an acid dye

C.I. Acid Yellow 1, 3, 7, 9, 11, 17, 23, 25, 29, 34, 36, 38, 40, 42, 54, 65, 72, 73, 76, 79, 98, 99, 111, 112 , 113, 114, 116, 119, 123, 128, 134, 135, 138, 139, 140, 144, 150, 155, 157, 160, 161, 163, 168, 169, 172, 177, 178, 179, 184 , 190, 193, 196, 197, 199, 202, 203, 204, 205, 207, 212, 214, 220, 221, 228, 230, 232, 235, 238, 240, 242, 243, 251, etc. ;

and green dyes such as C.I. Acid Green 1, 3, 5, 9, 16, 25, 27, 50, 58, 63, 65, 80, 104, 105, 106, 109, etc., preferably in an organic solvent. C.I. Acid Yellow 42, which has excellent solubility in water; C.I. Acid Green 27 may be used, but is not limited thereto, and these may be used alone or in combination of two or more.

Also as a C.I. direct dye,

C.I. Direct Yellow 2, 33, 34, 35, 38, 39, 43, 47, 50, 54, 58, 68, 69, 70, 71, 86, 93, 94, 95, 98, 102, 108, 109, 129 , 136, 138, 141 and other yellow dyes;

green dyes such as C.I. direct green 25, 27, 31, 32, 34, 37, 63, 65, 66, 67, 68, 69, 72, 77, 79, 82;

Also, C.I. As modanto dye

yellow dyes such as C.I. modanto yellow 5, 8, 10, 16, 20, 26, 30, 31, 33, 42, 43, 45, 56, 61, 62, 65;

Green dyes such as C.I. modanto green 1, 3, 4, 5, 10, 15, 19, 26, 29, 33, 34, 35, 41, 43, 53, and the like, but are not limited thereto, and these Each can be used individually or in mixture of 2 or more types.

According to an embodiment of the present invention, the content of the above-described colorant is 5 to 60% by weight, preferably 5 to 55% by weight, more preferably based on 100% by weight of the total solid content in the colored photosensitive resin composition comprising the same. It may be included in 5 to 50% by weight. When the content of the colorant satisfies the above range suggested by the present invention, the color concentration of the pixel is sufficient when the cured product is formed, and the omission property of the non-pixel portion is not reduced during development, thereby preventing the occurrence of residues. There is this.

In the present invention, 'total solid content in the colored photosensitive resin composition' means the total content of the remaining components except for the solvent contained in the colored photosensitive resin composition, and the pigment is included in the colored photosensitive resin composition in the form of a pigment dispersion composition , means that the content of the solvent contained in the pigment dispersion composition is also excluded.

dispersant

The pigment dispersion according to an embodiment of the present invention may be one in which the aforementioned colorant is dispersed in a dispersant.

The dispersing agent is added for deagglomeration and stability maintenance of the insoluble colorant, and those generally used in the art may be used without limitation. Specifically, surfactants such as cationic, anionic, nonionic, amphoteric, polyester, and polyamine may be used, but preferably BMA (butyl methacrylate) or DMAEMA (N,N-dimethylamino An acrylate-based dispersing agent (hereinafter, sometimes referred to as an acrylic dispersing agent) containing ethyl methacrylate) can be used. At this time, it may be preferable to apply the acrylic dispersant prepared by the living control method as presented in Korean Patent Application Laid-Open No. 2004-0014311. BYK-2000, DISPER BYK-2001, DISPER BYK-2070, DISPER BYK-2150, etc. may be mentioned, but are not limited thereto, and these may be used alone or in combination of two or more.

As the dispersant, a pigment dispersant of a resin type other than the above-mentioned acrylic dispersant may be used. The pigment dispersants of the other resin types include known resin type pigment dispersants, in particular polyurethanes, polycarboxylic acid esters typified by polyacrylates, unsaturated polyamides, polycarboxylic acids, polycarboxylic acids (partially) amine salts, ammonium salts of polycarboxylic acids, alkylamine salts of polycarboxylic acids, polysiloxanes, long-chain polyaminoamide phosphate salts, esters of hydroxyl-containing polycarboxylic acids and modified products thereof, or free ) oily dispersants such as amides or salts thereof formed by the reaction of a polyester having a carboxyl group with poly(lower alkyleneimine); water-soluble resins or water-soluble polymer compounds such as (meth)acrylic acid-styrene copolymer, (meth)acrylic acid-(meth)acrylate ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol or polyvinyl pyrrolidone; Polyester; modified polyacrylates; adducts of ethylene oxide/propylene oxide and phosphate esters; and the like. As a commercially available product of the above-mentioned resin type dispersant, as a cationic resin dispersant, for example, BYK (Big) Chemi Corporation's trade names: DISPER BYK-160, DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK- 164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; BASF brand names: EFKA-44, EFKA-46, EFKA-47, EFKA-48, EFKA-4010, EFKA-4050, EFKA-4055, EFKA-4020, EFKA-4015, EFKA-4060, EFKA-4300, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; Trade names from Lubirzol: SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10; Trade names of Kawaken Fine Chemicals: HINOACT T-6000, HINOACT T-7000, HINOACT T-8000; Trade names of Ajinomoto Corporation: AJISPUR PB-821, AJISPUR PB-822, AJISPUR PB-823; Kyoeisha Chemical Company's trade name: FLORENE DOPA-17HF, fluorene DOPA-15BHF, fluorene DOPA-33, fluorene DOPA-44, etc. may be mentioned, but are not limited thereto, and these are each independently Or it can be used in combination of 2 or more types, and can also be used in combination with an acrylic dispersing agent.

The content of the dispersant may be included in an amount of 5 to 60 parts by weight, more preferably 15 to 50 parts by weight, based on 100 parts by weight of the pigment solids included together. If the content of the dispersant exceeds the above range, the viscosity may increase and process problems may occur.

Alkali-soluble resin

The colored photosensitive resin composition according to one aspect of the present invention is characterized in that it comprises a copolymer in which a compound represented by the following formula (1) and a compound represented by the following formula (2) are copolymerized, thereby improving luminance or solvent resistance and further Furthermore, there is an advantage in that reliability is improved, such as there is no increase in viscosity even when stored for a long time.

[Formula 1]

(In Formula 1, R ₁ is a C ₁ to C ₅ alkylene group.)

[Formula 2]

(In Formula 2, R ₂ to R ₆ are hydrogen atoms).

The alkali-soluble resin of the present invention may further include an alkali-soluble resin other than the above-mentioned copolymer.

In this case, the alkali-soluble resin that may be further included may be used without limitation as long as it is a component that provides solubility to the alkali developer used in the developing process and is soluble in the alkali developer. In order to impart a property of being dissolved in an alkali developer, the alkali-soluble resin may introduce an acid value by introducing a carboxyl group into the resin. Specifically, it can be prepared by copolymerizing an ethylenically unsaturated monomer having a carboxyl group, or by reacting an acid anhydride with a resin copolymer having a hydroxyl group to give an acid value.

Specific examples of the ethylenically unsaturated monomer having a 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; Mono (meth) acrylates of a polymer having a carboxyl group and a hydroxyl group at both ends, such as ω-carboxy polycaprolactone mono (meth) acrylate, etc., and acrylic acid and methacrylic acid may be preferably used, but limited thereto it is not

As a method of imparting an acid value by reacting an acid anhydride to the resin copolymer having a hydroxyl group, there is a method in which an acid value is imparted by additionally reacting an acid anhydride to the hydroxyacrylate copolymer, but is not limited thereto.

Specific examples of the hydroxy acrylates include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, 2-hydroxy-3- and hydroxyethyl (meth)acrylates such as phenoxypropyl (meth)acrylate and N-hydroxyethyl acrylamide, but are not limited thereto.

Specific examples of the unsaturated monomers copolymerizable during the preparation of the alkali-soluble resin include styrene, vinyltoluene, α-methylstyrene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o- Aromatic vinyl compounds such as vinylbenzylmethyl ether, m-vinylbenzylmethylether, p-vinylbenzylmethylether, o-vinylbenzylglycidylether, m-nylbenzylglycidylether, and p-vinylbenzylglycidylether ; N-cyclohexylmaleimide, N-benzylmaleimide, N-phenylmaleimide, No-hydroxyphenylmaleimide, N-m-hydroxyphenylmaleimide, N-p-hydroxyphenylmaleimide, N-o-methylphenylmaleimide, N-m -N-substituted maleimide compounds, such as methylphenylmaleimide, N-p-methylphenylmaleimide, N-o-methoxyphenylmaleimide, N-m-methoxyphenylmaleimide, and N-p-methoxyphenylmaleimide; Methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, i-propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, alkyl (meth)acrylates such as sec-butyl (meth)acrylate and t-butyl (meth)acrylate; Cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0 2,6 ] decan-8-yl (meth) acrylate, 2- alicyclic (meth)acrylates such as dicyclopentanyloxyethyl (meth)acrylate and isobornyl (meth)acrylate; aryl (meth)acrylates such as phenyl (meth)acrylate and benzyl (meth)acrylate; 3-(methacryloyloxymethyl)oxetane, 3-(methacryloyloxymethyl)-3-ethyloxetane, 3-(methacryloyloxymethyl)-2-trifluoromethyloxetane; 3-(methacryloyloxymethyl)-2-phenyloxetane, 2-(methacryloyloxymethyl)oxetane, 2-(methacryloyloxymethyl)-4-trifluoromethyloxetane, etc. of unsaturated oxetane compounds, and the like, but are not limited thereto, and these may be used alone or in combination of two or more.

According to one embodiment of the present invention, the acid value of the above-described alkali-soluble resin may be 70 to 120 mgKOH / g. When the acid value of the alkali-soluble resin is less than the above range, the colored photosensitive resin composition including the same may not secure a sufficient development speed, and if it exceeds the above range, the adhesion with the substrate is reduced and a short circuit of the pattern may occur, Problems with compatibility with the colorant included therein may occur, causing problems such as precipitation of the colorant in the colored photosensitive resin composition, decreased storage properties of the colored photosensitive resin composition, and increased viscosity.

According to an embodiment of the present invention, the above-described alkali-soluble resin may have a weight average molecular weight of 10,000 to 19,000, preferably 12,000 to 17,000.

The content of the alkali-soluble resin may be included in an amount of 10 to 80% by weight, preferably 10 to 70% by weight, based on 100% by weight of the total solid content of the colored photosensitive resin composition including the same. When the content of the alkali-soluble resin satisfies the above range, there is an advantage in that the solubility in the developer is sufficient to facilitate pattern formation.

photopolymerization compound

The colored photosensitive resin composition according to an aspect of the present invention includes a photopolymerizable compound.

The photopolymerizable compound may be used without limitation as long as it is a compound that can be polymerized due to the action of a photopolymerization initiator to be described later, for example, monofunctional monomer, difunctional monomer, polyfunctional monomer, etc., and preferably 2 A polyfunctional monomer more than functional can be used.

Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, or N-vinylpi and rollidone, but is not limited thereto.

Specific examples of the bifunctional monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, and triethylene glycol di (meth) acrylate. , bis(acryloyloxyethyl)ether of bisphenol A, or 3-methylpentanediol di(meth)acrylate, but is not limited thereto.

Specific examples of the polyfunctional monomer include trimethylol propane tri (meth) acrylate, ethoxylated trimethylol propane tri (meth) acrylate, propoxylated trimethylol propane 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 or dipentaerythritol hexa (meth)acrylate, but is not limited thereto.

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

The photopolymerizable compound may be included in an amount of 5 to 45% by weight, preferably 7 to 45% by weight, based on 100% by weight of the total solid content of the colored photosensitive resin composition including the same. When the content of the photopolymerizable compound satisfies the above range, there is an advantage in that the strength or smoothness of the pixel portion formed including the photopolymerizable compound may be improved.

light curing initiator

The colored photosensitive resin composition according to an embodiment of the present invention includes a photoinitiator.

The photopolymerization initiator may be used without limitation as long as it is a compound that generates a radical capable of initiating polymerization of the above-described photopolymerizable compound by exposure to radiation such as visible light, ultraviolet light, far ultraviolet light, electron beam, or X-ray.

Specific examples of the photopolymerization initiator include an acetophenone-based compound, a benzophenone-based compound, a biimidazole-based compound, a triazine-based compound, an oxime ester-based compound, and a thioxanthone-based compound. It is preferable to include more than one species, but is not limited thereto.

Specific examples of the acetophenone-based compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1-[4-(2-hydroxyl) oxyethoxy)phenyl]-2-methylpropan-1-one, 1-hydroxycyclohexylphenylketone, 2-methyl-1-(4-methylthiophenyl)-2-morpholinopropan-1-one; 2-Benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, 2-hydroxy-2-methyl-1-[4-(1-methylvinyl)phenyl]propane-1 -one, 2-(4-methylbenzyl)-2-(dimethylamino)-1-(4-morpholinophenyl)butan-1-one, and the like, but is not limited thereto.

Specific examples of the benzophenone-based compound include benzophenone, 0-benzoylbenzoate methyl, 4-phenylbenzophenone, 4-benzoyl-4'-methyldiphenylsulfide, 3,3',4,4'-tetra (tert) -Butylperoxycarbonyl)benzophenone, 2,4,6-trimethylbenzophenone, etc. may be mentioned, but is not limited thereto.

Specific examples of the biimidazole compound include 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichloro Phenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetra(alkoxyphenyl)biimidazole , 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetra (trialkoxyphenyl) biimidazole, 2,2-bis (2,6-dichlorophenyl) -4, 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 with a carboalkoxy group; Among 2,2'-bis(2-chlorophenyl)-4,4',5,5'-tetraphenylbiimidazole, 2,2'-bis(2,3-dichlorophenyl)-4,4', 5,5'-tetraphenylbiimidazole, 2,2-bis(2,6-dichlorophenyl)-4,4'5,5'-tetraphenyl-1,2'-biimidazole can be preferably used However, the present invention is not limited thereto.

Specific examples of the triazine-based 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, 2,4-bis (trichloromethyl)-6-(4-methoxystyryl)-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(5-methylfuran-2- yl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-(furan-2-yl)ethenyl]-1,3,5-triazine , 2,4-bis(trichloromethyl)-6-[2-(4-diethylamino-2-methylphenyl)ethenyl]-1,3,5-triazine, 2,4-bis(trichloromethyl )-6-[2-(3,4-dimethoxyphenyl)ethenyl]-1,3,5-triazine, and the like, but are not limited thereto.

Examples of the oxime ester compound include 1,2-Octanedione, 1-[4-(phenylthio)phenyl]-,2-(O-benzoyloxime), 1-[9-Ethyl-6-(2-methylbenzoyl)-9Hcarbazol- 3-yl]ethanone 1-(O-acetyloxime), and the like, but are not limited thereto.

Examples of the thioxanthone-based compound include 2-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythioxanthone, and the like. may be mentioned, but is not limited thereto.

The above-described photopolymerization initiators may be used alone or in combination of two or more.

The photopolymerization initiator may further include a photopolymerization initiator auxiliary in order to further improve the sensitivity of the colored photosensitive resin composition including the photopolymerization initiator, thereby improving productivity.

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

It is preferable to use an aromatic amine compound as the amine compound, and specifically, an aliphatic amine compound such as triethanolamine, methyldiethanolamine, and triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4- Dimethylaminobenzoic acid isoamyl, 4-dimethylaminobenzoic acid 2-ethylhexyl, benzoic acid 2-dimethylaminoethyl, N,N-dimethylparatoluidine, 4,4'-bis(dimethylamino)benzophenone (common name: Michler ketone) ), 4,4'-bis(diethylamino)benzophenone, etc. may be used, but the present invention is not limited thereto.

The carboxylic acid compound is preferably aromatic heteroacetic acid, specifically phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthio acetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine, and naphthoxyacetic acid, but are not limited thereto.

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)-trione, trimethylolpropanetris(3-mercaptopropionate), pentaerythritoltetrakis(3-mercaptobutyl rate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), tetraethylene glycol bis (3-mercaptopropionate), and the like. However, the present invention is not limited thereto.

The photopolymerization initiator may be included in an amount of 0.1 to 40 parts by weight, preferably 1 to 30 parts by weight, based on the total weight of the solid content in the colored photosensitive resin composition including the alkali-soluble resin and the content of the photopolymerizable compound. When the content of the photopolymerization initiator satisfies the above range, the colored photosensitive resin composition including the same is highly sensitive and the exposure time is shortened, so there is an advantage in that productivity is improved and high resolution can be maintained, and the strength of the pixel portion formed using the same and smoothness on the surface of the pixel unit may be improved.

When a photopolymerization initiation adjuvant is used together with the photoinitiator, it may be included in an amount of 10 to 100 wt%, preferably 10 to 90 wt%, based on 100 wt% of the total photopolymerization initiator and the photopolymerization initiation adjuvant.

When the content of the photopolymerization initiator is included below the above range, a decrease in sensitivity due to dyes that may be included together cannot be overcome, and a short circuit of the pattern may occur during the developing process.

solvent

The colored photosensitive resin composition according to one embodiment of the present invention contains a solvent.

The solvent can be used without limitation as long as it is effective in dissolving the above-mentioned components, for example, ethers, aromatic hydrocarbons, ketones, alcohols, esters, amides, etc., but are not limited thereto. .

The solvent is more specifically ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether , diethylene glycol dialkyl ethers such as diethylene glycol dipropyl ether and diethylene glycol dibutyl 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; 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 γ-butyrolactone; and the like, but are not limited thereto, and these may be used alone or in combination of two or more.

The solvent is preferably an organic solvent having a boiling point of 100°C to 200°C in terms of coatability and drying properties, for example, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl lactate, butalak. Tate, 3-ethoxy ethyl propionate, 3-methoxy methyl propionate, etc. may be used, but is not limited thereto.

The content of the solvent may be included in an amount of 60 to 90% by weight, preferably 70 to 85% by weight, based on 100% by weight of the total colored photosensitive resin composition including the same. If the content of the solvent satisfies the above range, good applicability may be obtained when applied with an application device such as a roll coater, spin coater, slit and spin coater, slit coater (sometimes referred to as a die coater), inkjet, etc. there is an advantage

additive

According to an embodiment of the present invention, the colored photosensitive resin composition of the present invention may further include an additive in addition to the above-described components.

The additive may include, without limitation, fillers, other high molecular compounds, curing agents, adhesion promoters, ultraviolet absorbers, anti-aggregation agents, and the like, as needed within the scope not impairing the purpose of the present invention.

Specific examples of the other high molecular compounds 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. However, the present invention is not limited thereto.

The curing agent is used for deep curing and increasing mechanical strength, and specifically, an epoxy compound, a polyfunctional isocyanate compound, a melamine compound, an oxetane compound, and the like may be used, but is not limited thereto. The epoxy compound is more specifically, a bisphenol A-based epoxy resin, a hydrogenated bisphenol A-based epoxy resin, a bisphenol F-based epoxy resin, a hydrogenated bisphenol F-based epoxy resin, a novolak-type epoxy resin, other aromatic epoxy resins, alicyclic epoxy resins, Glycidyl ester-based resins, glycidylamine-based resins, or brominated derivatives of these epoxy resins, aliphatic, alicyclic or aromatic epoxy compounds other than epoxy resins and brominated derivatives, butadiene (co)polymer epoxide, isoprene (co) ) Polymer epoxide, glycidyl (meth) acrylate (co) polymer, triglycidyl isocyanurate, etc. can be used, but is not limited thereto. More specifically, the oxetane compound may include carbonate bisoxetane, xylenebisoxetane, adipate bisoxetane, terephthalate bisoxetane, cyclohexanedicarboxylic acid bisoxetane, and the like, but limited thereto. it is not going to be

The curing agent may be used in combination with a curing auxiliary compound capable of ring-opening polymerization of the epoxy group of the epoxy compound and the oxetane skeleton of the oxetane compound. Specifically, as the curing auxiliary compound, polyhydric carboxylic acids, polyhydric carboxylic acid anhydrides, acid generators, and the like may be used. As the carboxylic acid anhydride, a commercially available epoxy resin curing agent may be used. As the commercially available epoxy resin curing agent, for example, a trade name (Adecahadona EH-700) (manufactured by Adeka Industrial Co., Ltd.), a trade name (Rikasiddo HH) (manufactured by Shin-Nippon Ewha Co., Ltd.), trade name (MH-700) (manufactured by Nippon Ewha Co., Ltd.), etc., but is not limited thereto.

The curing agent and curing auxiliary compound exemplified above may be used alone or in combination of two or more.

The adhesion promoter is specifically, vinyltrimethoxysilane, vinyltriethoxysilane, vinyl tris(2-methoxyethoxy)silane, N-(2-aminoethyl)-3-aminopropylmethyldimethoxysilane, N -(2-aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltri Methoxysilane, 3-isocyanatepropyltrimethoxysilane and 3-isocyanatepropyltriethoxysilane may be used alone or a mixture thereof, but is not limited thereto.

Specifically, the UV absorber may include, but is not limited to, 2-(3-tert-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotyrazole, alkoxybenzophenone, and the like.

The aggregation inhibitor may be specifically sodium polyacrylate, but is not limited thereto.

As described above, the colored photosensitive resin composition according to an embodiment of the present invention includes a pigment dispersion containing a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent, and the colorant is C.I. Pigment Blue 15:6 and C.I. Pigment Red 177, wherein the C.I. Pigment Red 177 is included in less than 20% by weight based on 100% by weight of the total pigment dispersion, and the alkali-soluble resin is a copolymer in which the compound represented by Formula 1 and the compound represented by Formula 2 are copolymerized. By doing so, it has excellent storage stability, such as excellent brightness and solvent resistance, and no increase in viscosity even when stored for a long time.

<Color filter>

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

The color filter includes the cured product of the above-described colored photosensitive resin composition, and thus has excellent luminance and solvent resistance.

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

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

The pattern layer is a layer including the colored photosensitive resin composition of the present invention, and may be a layer formed by applying the colored photosensitive resin composition and then exposing, developing, and thermosetting the colored photosensitive resin composition in a predetermined pattern. The pattern layer may be formed by performing a method commonly known in the art.

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

In addition, it may further include a protective layer formed on the pattern layer of the color filter.

<Image display device>

In addition, another aspect of the present invention relates to an image display device including the above-described color filter.

Since the image display device includes the above-described color filter, there is an advantage in that luminance and solvent resistance are excellent.

The image display device of the present invention includes the color filter, and specific examples thereof include, but are not limited to, a liquid crystal display, an OLED, a flexible display, and the like.

Hereinafter, preferred examples are presented to help the understanding of the present invention, but the following examples are merely illustrative of the present invention, and it is apparent to those skilled in the art that various changes and modifications are possible within the scope and spirit of the present invention. , it is natural that such variations and modifications fall within the scope of the appended claims. In the following Examples and Comparative Examples, "%" and "part" indicating the content are based on weight unless otherwise specified.

Preparation Example 1 to 3: Preparation of pigment dispersion

production example 1: Preparation of pigment dispersion M1

As a pigment, C.I. Pigment Blue 15:6 12.0 parts by weight, DISPERBYK-2001 (made by BYK) 4.0 parts by weight as a pigment dispersant, 44 parts by weight of propylene glycol methyl ether acetate and 40 parts by weight of propylene glycol methyl ether as a solvent using a bead mill for 12 hours During mixing and dispersing, pigment dispersion M1 was prepared.

production example 2: Preparation of pigment dispersion M2

As a pigment, C.I. Pigment Blue 15:6 8.4 parts by weight, violet dye 3.6 parts by weight 4.0 parts by weight of DISPERBYK-2001 (manufactured by BYK) as a pigment dispersant, 44 parts by weight of propylene glycol methyl ether acetate and 40 parts by weight of propylene glycol methyl ether as a solvent bead mill was mixed and dispersed for 12 hours to prepare a pigment solution M1.

production example 3: Preparation of pigment dispersion M3

As a pigment, C.I. 14.0 parts by weight of Pigment Red 177, 3.0 parts by weight of DISPERBYK-2001 (manufactured by BYK) as a pigment dispersant, 44 parts by weight of propylene glycol methyl ether acetate and 20 parts by weight of 4-hydroxy-4-methyl-2-pentanone as a solvent A pigment dispersion M2 was prepared by mixing and dispersing for 12 hours using a bead mill.

Synthesis example : Synthesis of alkali-soluble resin

Synthesis example 1: Synthesis of alkali-soluble resin A-1

400 parts by weight of propylene glycol monomethyl ether acetate, 7 parts by weight of azobisisobutyronitrile (AIBN), 10 parts by weight of benzylmaleimide, 55 parts by weight of cyclohexyl methacrylate, 20 parts by weight of glycidyl methacrylate, and 15 parts by weight of methacrylic acid were introduced and nitrogen-substituted. Then, while stirring, the temperature of the reaction solution was raised to 100° C. and reacted for 7 hours after the rise to synthesize alkali-soluble resin A-1. The alkali-soluble resin thus synthesized had a solid content acid value of 100 mgKOH/g, and a weight average molecular weight Mw measured by GPC of about 15,500.

Synthesis example 2: Synthesis of alkali-soluble resin A-2

100 parts by weight of propylene glycol monomethyl ether acetate, 100 parts by weight of propylene glycol monomethyl ether, 8.2 parts by weight of AIBN, 75.4 parts by weight of vinyltoluene, 4 - 5.9 parts by weight of methylstyrene, 47.6 parts by weight of glycidyl methacrylate, and 6.8 parts by weight of norbornene were introduced and nitrogen-substituted. Then, while stirring, the temperature of the reaction solution was raised to 80° C. and reacted for 4 hours. Then, the temperature of the reaction solution was lowered to room temperature and the flask atmosphere was substituted from nitrogen to air, then 0.2 parts by weight of triethylamine, 0.1 parts by weight of 4-methoxyphenol, and 43.5 parts by weight of acrylic acid were added and reacted at 100° C. for 6 hours. . After that, the temperature of the reaction solution was lowered to room temperature, 11.4 g of succinic anhydride was added, and reacted at 80° C. for 6 hours to synthesize alkali-soluble resin A-2. The alkali-soluble resin A-2 thus synthesized had a solid content acid value of 86.1 mgKOH/g, and a weight average molecular weight (Mw) of about 19,500 measured by GPC.

Example and comparative example

A colored photosensitive resin composition was prepared in the composition and content shown in Table 1 below. At this time, the content of 'remark (R177 content)' in Table 1 below is C.I. The content of Pigment 177 is described.

division
(weight%) Pigment Dispersion (A) Alkali-soluble resin (B) Photopolymerizable compound (C) Photoinitiator (D) Solvent (E) note
(R177 content) a-1 a-2 a-3 b-1 b-2 Example 1 16.4 - 0.9 10.3 - 6.6 0.6 65.2 5% Example 2 15.5 - 1.8 10.3 - 6.6 0.6 65.2 10% Example 3 14.7 - 2.6 10.3 - 6.6 0.6 65.2 15% Example 4 - 16.8 0.5 10.3 - 6.6 0.6 65.2 5% Example 5 - 16.0 1.3 10.3 - 6.6 0.6 65.2 10% Example 6 - 15.2 2.1 10.3 - 6.6 0.6 65.2 15% Example 7 6.2 10.4 0.7 10.3 - 6.6 0.6 65.2 5% Example 8 6.8 9.1 1.4 10.3 - 6.6 0.6 65.2 10% Example 9 7.4 7.5 2.4 10.3 - 6.6 0.6 65.2 15% Comparative Example 1 13.8 - 3.5 10.3 - 6.6 0.6 65.2 20% Comparative Example 2 15.5 - 1.8 - 10.3 6.6 0.6 65.2 10% Comparative Example 3 - 14.3 3.0 10.3 - 6.6 0.6 65.2 20% Comparative Example 4 - 16.0 1.3 - 10.3 6.6 0.6 65.2 10% Comparative Example 5 7.9 6.1 3.3 10.3 - 6.6 0.6 65.2 20% Comparative Example 6 6.8 9.1 1.4 - 10.3 6.6 0.6 65.2 10% [Colorant (A)]
a-1: pigment dispersion M1
a-2: pigment dispersion M2
a-3: pigment dispersion M3
[Alkali-soluble resin (B)]
b-1: Alkali-soluble resin of Synthesis Example 1
b-2: alkali-soluble resin of Synthesis Example 2
[Photopolymerizable compound (C)]: KAYARAD DPHA (manufactured by Nippon Kayaku)
[Photoinitiator (D)]: OXE-01 (manufactured by BASF)
[Solvent (E)]: propylene glycol monomethyl ether acetate

production example 3: Manufacture of color filter

Color filters were prepared using the colored photosensitive resin compositions prepared in Examples 1 to 9 and Comparative Examples 1 to 6 above.

Specifically, each of the colored photosensitive resin compositions was coated on a glass substrate of 2 inches in width and length by spin coating (“EAGLE XG”, manufactured by Corning Corporation), then placed on a heating plate and maintained at a temperature of 100° C. for 3 minutes. A thin film was formed. Then, a test photomask having a pattern for changing the transmittance in the range of 1 to 100% stepwise and a line/space pattern from 1 μm to 50 μm is placed on the thin film, and the distance from the test photomask is set to 100 μm to absorb UV rays. investigated. At this time, ultraviolet rays were irradiated with an illuminance of 100 mJ/cm ² using a 1kW high-pressure mercury lamp containing all of the g, h, and i rays, and no special optical filter was used. The thin film irradiated with ultraviolet light was developed by immersing it in a developing solution of a KOH aqueous solution having a pH of 10.5 for 2 minutes. Thereafter, 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 200° C. for 25 minutes to prepare a color filter. The film thickness of each of the color filters prepared above was 2.6 μm.

Experimental example 1. Luminance measurement

The luminance of each color filter prepared in Preparation Example 3 was measured using a microscopic spectrometer OSP-SP2000, and the results are shown in Table 2 below. In this case, the evaluation criteria of the luminance (Y) are as follows.

<Luminance (Y) evaluation criteria>

○: Y > 9

△: 7 ≤ Y ≤ 9

×: Y < 7

Experimental example 2. solvent resistance evaluation

Solvent resistance (ΔE*ab) of each color filter prepared in Preparation Example 3 was evaluated. For the measurement of the solvent resistance, each prepared color filter was immersed in a solvent (NMP, 1-methyl-2-pyrrolidinone) for 30 minutes, and the color change before and after immersion was calculated and evaluated for comparative evaluation. Table 2 shows. At this time, the solvent resistance evaluation was calculated using the following Equation 1 representing the color change in a three-dimensional colorimeter defined by L*, a*, and b*, and the evaluation criteria are as follows.

[Equation 1]

ΔE*ab = [(ΔL*) ² +(Δa*) ² +(Δb*) ² ] ^{1 /2}

<Criteria for evaluation of solvent resistance>

○: △E*ab < 3

Δ: 3 ≤ ΔE*ab ≤ 5

×: △E*ab > 5

Experimental example 3. Storage stability evaluation

After measuring the viscosity of the composition prepared above using a TOKI SANGYO TV-35 viscometer, the same sample was heated again in an oven at 80° C. for 20 minutes to measure the viscosity, and then the difference in viscosity was calculated and evaluated for comparison. The evaluation criteria are as follows.

<Evaluation criteria>

○: less than 1.0 cp

△: 1.0 cp or more and 2.0 cp or less

×: more than 2.0 cp

luminance solvent resistance storage stability Example 1 ○ ○ ○ Example 2 ○ ○ ○ Example 3 △ △ ○ Example 4 ○ ○ △ Example 5 ○ ○ △ Example 6 △ △ △ Example 7 ○ ○ ○ Example 8 ○ ○ ○ Example 9 △ △ ○ Comparative Example 1 × △ ○ Comparative Example 2 ○ × ○ Comparative Example 3 × △ × Comparative Example 4 ○ × × Comparative Example 5 × △ △ Comparative Example 6 ○ × △

Referring to Table 2, in the case of Examples 1 to 9 satisfying all of the configurations presented in the present invention, luminance and solvent resistance are higher than those of Comparative Examples 1 to 6, which do not satisfy any of the configurations presented in the present invention. And it was confirmed that all of the storage stability was excellent.

Claims (8)

A pigment dispersion containing a colorant, an alkali-soluble resin, a photopolymerizable compound, a photoinitiator and a solvent,
The pigment dispersion includes CI Pigment Blue 15:6 and CI Pigment Red 177, wherein the CI Pigment Red 177 is included in an amount of 10% by weight or less with respect to 100% by weight of the total pigment dispersion,
The alkali-soluble resin is a colored photosensitive resin composition comprising a copolymer in which a compound represented by the following formula (1) and a compound represented by the following formula (2) are copolymerized:
[Formula 1]

(In Formula 1, R ₁ is C ₁ to C ₅ alkylene).
[Formula 2]

(In Formula 2, R ₂ to R ₆ are hydrogen atoms). delete According to claim 1,
The content of the colorant is a colored photosensitive resin composition, characterized in that it comprises 5 to 60% by weight based on 100% by weight of the total solid content of the colored photosensitive resin composition comprising the same. According to claim 1,
The acid value of the alkali-soluble resin is a colored photosensitive resin composition, characterized in that 70 to 120KOHmg / g. According to claim 1,
The color photosensitive resin composition, characterized in that the weight average molecular weight of the alkali-soluble resin is 12,000 to 17,000. According to claim 1,
The alkali-soluble resin is a colored photosensitive resin composition, characterized in that it is contained in an amount of 10 to 80% by weight based on 100% by weight of the total solid content of the colored photosensitive resin composition containing the same. A color filter comprising a cured product of the colored photosensitive resin composition of any one of claims 1 and 3 to 6. An image display device comprising the color filter of claim 7.