KR20170111655A - Colored photosensitive resin composition for organic light emitting diodes, color filter and image display device produced using the same - Google Patents

Abstract

More particularly, the present invention relates to a colored photosensitive resin composition for an organic light-emitting diode, which comprises at least one hydrophilic group and is represented by the following formula 1 Soluble resin having an acid value (mgKOH / g) of the alkali-soluble resin, and b is a mole% of repeating units containing a hydrophilic group in the repeating units, and b is an acid value (mgKOH / g) of the alkali-soluble resin. And a color filter and an image display device manufactured by the method.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a colored photosensitive resin composition for an organic light-emitting diode, a color filter manufactured using the same, and an image display device using the same. BACKGROUND ART < RTI ID =

The present invention relates to a colored photosensitive resin composition applicable to the production of an organic light emitting diode (OLED), a color filter manufactured using the same, and an image display device.

BACKGROUND ART [0002] Color filters are widely used in various display devices such as an image pickup device and a liquid crystal display (LCD), and their application range is rapidly expanding. The color filter may be formed of three color patterns of red, green, and blue, or may be formed of three color patterns of yellow, magenta, and cyan, Lt; / RTI >

The color filter widely used in the display device is a method in which a colored photosensitive resin composition containing a pigment dispersion composition corresponding to the color of each pattern is uniformly applied on a substrate having a black matrix pattern formed thereon by spin or slit coating, The coating film formed by heating and drying is exposed and developed, and if necessary, further heating and curing is repeated for each color to form pixels of each color.

However, when a color filter for a display device such as an OLED is manufactured using a conventional colored photosensitive resin composition, moisture is generated in the manufacturing process, and a display device such as an OLED, which is weak in moisture, There is a problem.

Korean Patent Publication No. 2004-0026095 relates to a dye-containing curable composition, a color filter and a process for producing the same, and is a dye-containing curable composition for a color filter comprising a binder and an organic solvent-soluble dye. Containing curing composition, and has a glass transition temperature in the range of 0 to 250 캜. However, since the water-absorbing property is poor and it is used for a color filter for a display device, in particular, a color filter for an OLED In terms of luminance characteristics and reliability.

Korean Patent Publication No. 2004-0026095 (March 27, 2004)

An object of the present invention is to provide a colored photosensitive resin composition for an organic light emitting diode having a low moisture content or an excellent developing property.

The present invention also provides a color filter and an image display device manufactured using the above-described colored photosensitive resin composition for an organic light emitting diode.

In order to accomplish the above object, the present invention provides a colored photosensitive resin composition for an organic light emitting diode, which comprises an alkali-soluble resin containing at least one hydrophilic group and satisfying the following formula (1).

[Formula 1]

0.1 < a / b < 1.0

In formula (1), a is the mole% of the repeating unit containing the hydrophilic group in the repeating unit of the alkali-soluble resin,

and b is the acid value (mgKOH / g) of the alkali-soluble resin.

The present invention also provides a color filter made of the above-mentioned colored photosensitive resin composition for an organic light emitting diode and an image display device including the same.

INDUSTRIAL APPLICABILITY The colored photosensitive resin composition for an organic light emitting diode of the present invention can provide a colored photosensitive resin composition for an organic light emitting diode which is excellent in developability or water-containing property and does not cause water spots or VD (Vacuum dry) stains.

In addition, the color filter and the image display device using the colored photosensitive resin composition for an organic light emitting diode of the present invention have an advantage of being excellent in developing property, having a small moisture content and excellent in reliability.

1 is a view showing a water stain measurement method of Experimental Example 3;

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.

< For organic light emitting diode  Colored photosensitive resin composition>

One embodiment of the present invention relates to a colored photosensitive resin composition for an organic light emitting diode comprising an alkali-soluble resin containing at least one hydrophilic group and satisfying the following formula (1).

[Formula 1]

0.1 < a / b < 1.0

In formula (1), a is the mole% of the repeating unit containing the hydrophilic group in the repeating unit of the alkali-soluble resin,

and b is the acid value (mgKOH / g) of the alkali-soluble resin.

Alkali-soluble resin

The alkali-soluble resin according to the present invention contains at least one hydrophilic group and satisfies the following formula (1).

[Formula 1]

0.1 < a / b < 1.0

In formula (1), a is the mole% of the repeating unit containing the hydrophilic group in the repeating unit of the alkali-soluble resin,

and b is the acid value of the alkali-soluble resin.

In the present invention, the "hydrophilic group" may be a hydroxyl group, a carboxyl group or an amide group.

When the colored photosensitive resin contains an alkali-soluble resin satisfying the formula (1), it is possible to manufacture a color filter having a small moisture content, thereby improving the reliability of a color filter manufactured, in particular, a color filter for an OLED. In addition, there is an advantage that occurrence of water spots, VD spots, and the like can be suppressed. In the case where the ratio of the alkali-soluble resin, that is, a / b is 1.0 or more, the content of water becomes high and compatibility problems as a colored photosensitive resin composition for an image display device, particularly an OLED, may occur.

The repeating unit containing a hydrophilic group in the alkali-soluble resin may be contained in an amount of 2 to 100 mol%, preferably 10 to 80 mol% based on the total molar amount of the constituent units constituting the alkali-soluble resin, but is not limited thereto.

The alkali-soluble resin may be in the form of polymerized units containing at least one hydrophilic group or copolymerized with one or more other monomers, provided that at least one hydrophilic group in the alkali-soluble resin is included But is not limited thereto.

Preferably, the alkali-soluble resin has a form of a copolymer of an acrylic acid, a glycidyl (meth) acrylate, a methyl (meth) acrylic acid and the like and at least one compound having an unsaturated bond, It is not.

The unsaturated bond-containing compound is not limited as long as it is a compound having an unsaturated double bond capable of polymerization, and specific examples thereof include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, Substituted alkyl ester compounds of unsaturated carboxylic acids such as methyl (meth) acrylate; (Meth) acrylate, cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, cyclohexyl (meth) acrylate, methylcyclohexyl (Meth) acrylate, cyclohexenyl (meth) acrylate, cycloheptenyl (meth) acrylate, cyclooctenyl (meth) acrylate, pentadienyl Acrylate, norbornyl (meth) acrylate, glycidyl (meth) acrylate, 3,4-epoxycyclohexyl (meth) acrylate, 3,4-epoxycyclohexyl Unsaturated carboxylic acid ester compounds containing alicyclic substituents such as methyl (meth) acrylate and methyl glycidyl (meth) acrylate; Mono-saturated carboxylic acid ester compounds of glycols such as oligoethylene glycol monoalkyl (meth) acrylate; Unsaturated carboxylic acid ester compounds containing a substituent having an aromatic ring such as benzyl (meth) acrylate and phenoxy (meth) acrylate; Aromatic vinyl compounds such as styrene,? -Methylstyrene, and vinyltoluene; Carboxylic acid vinyl esters such as vinyl acetate and vinyl propionate; (Meth) acrylonitrile, and? -Chloroacrylonitrile; And maleimide compounds such as N-cyclohexylmaleimide and N-phenylmaleimide.

The alkali-soluble resin can be prepared by the following method, but it is not limited thereto and can be prepared by a method commonly used in the art.

Such as an acid functional group, wherein the copolymer comprises at least one hydrophilic group. The above production method can be produced by any one of various polymerization methods known in the art such as radical polymerization, cation polymerization, anion polymerization, condensation polymerization, etc. However, radical polymerization is used in terms of ease of production and economy Most preferred.

Specifically, the monomer can be prepared by mixing the monomer with a polymerization solvent, heating it to an appropriate temperature, and then removing oxygen through nitrogen purging. Further, it can be produced preferably by adding a radical polymerization initiator and a chain transfer agent, if necessary, and maintaining the polymerization temperature. In the above method, the polymerization temperature and the polymerization time may be determined in consideration of the half life of the polymerization initiator used, depending on the temperature.

The alkali-soluble resin may further include a monomer other than the monomer having at least one hydrophilic group and the monomer having the unsaturated bond. Other monomers used in the copolymer preparation include, for example, copolymerizable aromatic and aliphatic vinyl monomers such as styrene, chlorostyrene,? -Methylstyrene, vinyltoluene, methyl (meth) acrylate, ethyl Butyl (meth) acrylate, cyclohexyl (meth) acrylate, isobonyl (meth) acrylate, benzyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, isobutyl (Meth) acrylate, dicyclopentanyl (meth) acrylate, 2-phenoxyethyl (meth) acrylate, tetrahydroperfuryl (meth) acrylate, hydroxyethyl (Meth) acrylate, 2-hydroxy-3-chloropropyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, acyloctyloxy- Acrylate, methoxytriethyleneglycol (meth) acrylate, methoxytriethylene (meth) acrylate, methoxytriethyleneglycol (meth) acrylate, 2-methoxyethyl Glycol (meth) acrylate, methoxypolyethylene glycol (meth) acrylate, (Meth) acrylate, p-nonylphenoxypolyethylene glycol (meth) acrylate, p-nonylphenoxypolypropylene glycol (meth) acrylate, tetrafluoropropyl (meth) , 1,3,3,3-hexafluoroisopropyl (meth) acrylate, octafluoropentyl (meth) acrylate, heptadecafluorodecyl (meth) acrylate, tribromophenyl (meth) .

In one embodiment of the present invention, the acid value of the alkali-soluble resin may be 30 to 150 mg KOH / g. When the acid value of the alkali-soluble resin is within the above range, it is possible to prevent a short circuit of the pattern, and there is an advantage in terms of the process. When the acid value of the alkali-soluble resin is less than 30 mgKOH / g, the colored photosensitive resin composition for the organic light-emitting diode may be somewhat difficult to ensure a sufficient developing rate. When the acid value of the alkali- The pattern may be short-circuited, resulting in compatibility problems and storage stability problems. As the viscosity increases, problems may arise from the viewpoint of processability.

In another embodiment of the present invention, the alkali-soluble resin may be contained in an amount of 10 to 80 parts by weight, preferably 30 to 80 parts by weight, based on the total solid content of the colored photosensitive resin composition for an organic light emitting diode.

When the alkali-soluble resin is contained within the above range, the solubility in the developing solution is sufficient, and pattern formation is easy, and reduction in the film thickness of the pixel portion of the exposed portion is prevented during development, so that the missing property of the non-pixel portion is improved. When the alkali-soluble resin is contained in the range below the above range, the non-pixel portion may be somewhat poor in dropout. If the alkali-soluble resin is contained in excess of the above range, viscosity may increase and pattern formation may be somewhat difficult.

In still another embodiment of the present invention, the colored photosensitive resin composition for an organic light emitting diode may further include at least one selected from the group consisting of a photopolymerizable compound, a photopolymerization initiator, a colorant, and a solvent.

The solid content of the colored photosensitive resin composition for an organic light emitting diode in the present invention means the total content of the remaining components excluding the solvent from the colored photosensitive resin composition for an organic light emitting diode.

Photopolymerization  compound

The photopolymerizable compound may be a monofunctional monomer, a bifunctional monomer, or a multifunctional monomer, which can be polymerized by the action of a photopolymerization initiator to be described later, and preferably a bifunctional or multifunctional monomer.

Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate or N- But are 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, triethylene glycol di (meth) , Bis (acryloyloxyethyl) ether of bisphenol A or 3-methylpentanediol di (meth) acrylate, but are not limited thereto.

Specific examples of the polyfunctional monomer include trimethylolpropane tri (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate, pentaerythritol tri (Meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, ethoxylated dipentaerythritol hexa (meth) acrylate, propoxylated dipentaerythritol hexa ) Acrylate or dipentaerythritol hexa (meth) acrylate, but are not limited thereto.

The photopolymerizable compound may be contained in an amount of 5 to 45 parts by weight, preferably 7 to 45 parts by weight based on 100 parts by weight of the total solid content in the colored photosensitive resin composition for an organic light emitting diode. When the photopolymerizable compound is contained within the above range, the strength and smoothness of the pixel portion are preferably good. If the photopolymerizable compound is less than the above range, the strength may be somewhat lowered, and if it exceeds the above range, the viscosity may increase to some extent, which may be undesirable from a viewpoint of processability.

Light curing Initiator

The photopolymerization initiator according to the present invention can be used without particular limitation as long as it can polymerize the photopolymerizable compound. Particularly, from the viewpoints of polymerization characteristics, initiation efficiency, absorption wavelength, availability, and cost, the photopolymerization initiator is preferably used in combination with an acetophenone compound, a benzophenone compound, a triazine compound, a biimidazole compound, It is preferable to use at least one compound selected from the group consisting of compounds.

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 2- (4-methylbenzyl) -2- (dimethylamino) -1- (4-morpholinophenyl) butan-1-one.

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

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, 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) Imidazole compounds in which 4'5,5'-tetraphenyl-1,2'-biimidazole or phenyl groups at 4,4 ', 5,5' positions are substituted by carboalkoxy groups. Among them, 2,2'-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (2,3- , 2,2-bis (2,6-dichlorophenyl) -4,4'5,5'-tetraphenyl-1,2'-biimidazole is preferably used do.

Specific examples of the oxime compounds include o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one and commercially available products such as Irgacure OXE 01 and OXE 02 from BASF.

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

The photopolymerization initiator may further include a photopolymerization initiator to enhance the sensitivity of the colored photosensitive resin composition for an organic light emitting diode according to the present invention. When the photopolymerization initiator is included, the sensitivity is further increased and the productivity is improved.

The photopolymerization initiation auxiliary 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.

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 4-dimethylaminobenzoate, 2-dimethylaminoethyl benzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzophenone ), 4,4'-bis (diethylamino) benzophenone, and the like.

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, naphthoxyacetic acid and the like.

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 hexacis (3-mercaptopropionate), and tetraethylene glycol bis (3-mercaptopropionate) .

The photopolymerization initiator may be contained in an amount of 0.1 to 40 parts by weight, preferably 1 to 30 parts by weight based on the total amount of the alkali-soluble resin and the photopolymerizable compound based on the total solid content of the colored photosensitive resin composition for the organic light emitting diode .

When the photopolymerization initiator is contained within the above range, the colored photosensitive resin composition for an organic light emitting diode has high sensitivity and shortens the exposure time, thereby improving productivity and maintaining high resolution. Further, there is an advantage that the strength of the pixel portion formed by using the colored photosensitive resin composition for an organic light emitting diode and the smoothness on the surface of the pixel portion are improved.

In the case of the photopolymerization initiator, 10 to 100% by weight, preferably 20 to 100% by weight, of the photopolymerization initiator should be included. When the proportion of the photopolymerization initiator is less than 10% by weight, sensitivity deterioration due to the dye can not be overcome and the pattern may be short-circuited during the development process.

When the photopolymerization initiation auxiliary is further used, the photopolymerization initiation auxiliary is preferably added in an amount of 0.1 to 40 wt% based on the total amount of the alkali-soluble resin and the photopolymerizable compound based on the total weight of the solid components of the colored photosensitive resin composition for the organic light emitting diode Parts by weight, preferably 1 to 30 parts by weight. When the amount of the photopolymerization initiator is within the above range, the sensitivity of the colored photosensitive resin composition for an organic light emitting diode is improved, and the productivity of a color filter formed using the colored photosensitive resin composition for an organic light emitting diode is improved Effect can be provided.

coloring agent

The colorant according to the present invention may comprise a pigment. The pigment may be an organic pigment or an inorganic pigment generally used in the art. The above-mentioned pigments can be used in various kinds of pigments used in printing ink, ink jet ink and the like. Specific examples thereof include water-soluble azo pigments, insoluble azo pigments, phthalocyanine pigments, quinacridone pigments, isoindolinone pigments, And an anthanthrone pigment, an anthanthrone pigment, a pravanthrone pigment, a pyranthrone pigment, an anthanthrone pigment, an anthanthrone pigment, an anthanthrone pigment, an anthanthrone pigment, an anthanthrone pigment, a pyranthrone pigment, pyranthrone pigments, diketopyrrolopyrrole pigments, and the like.

Examples of the inorganic pigments include metallic compounds such as metal oxides and metal complex salts. Specific examples of the inorganic pigments include oxides of metals such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, zinc, antimony and carbon black Or composite metal oxides. Particularly, the organic pigments and inorganic pigments may be specifically classified into pigments in the Society of Dyers and Colourists, and more specifically, those having a color index (CI) number Pigments, but are not limited thereto.

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, 177, 180, 192, 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, 15: 6, etc.), 21, 28, 60, 64 and 76

C.I. Pigment Green 7, 10, 15, 25, 36, 47 and 58

C.I Pigment Brown 28

C.I Pigment Black 1 and 7, etc.

These pigments may be used alone or in combination of two or more.

The exemplified C.I. Among the pigment pigments, C.I. Pigment Orange 38, C.I. Pigment Red 122, C.I. Pigment Red 166, C.I. Pigment Red 177, C.I. Pigment Red 208, C.I. Pigment Red 242, C.I. Pigment Red 254, C.I. Pigment Red 255, C.I. Pigment Yellow 138, C.I. Pigment Yellow 139, C.I. Pigment Yellow 150, C.I. Pigment Yellow 185, C.I. Pigment Green 7, C.I. Pigment Green 36, C.I. Pigment Green 58, C.I. Pigment Violet 23, C.I. Pigment Blue 15: 3, Pigment Blue 15: 6 can be preferably used.

It is preferable to use a pigment dispersion in which the particle diameter of the pigment is uniformly dispersed. An example of a method for uniformly dispersing the particle diameter of the pigment includes a method of dispersing the pigment by adding a pigment dispersant. According to this method, a pigment dispersion in which the pigment is uniformly dispersed in a solution can be obtained, Do.

Examples of the pigment dispersant include surfactants such as cationic surfactants, anionic surfactants, nonionic surfactants, amphoteric surfactants, polyester surfactants, and polyamine surfactants. These surfactants may be used singly or in combination of two or more. It does not.

The content of the pigment is in the range of 20 to 90% by weight, preferably 30 to 70% by weight with respect to the total solid content in the pigment dispersion. When the content of the pigment is in the range of 20 to 90% by weight, the viscosity is low, the storage stability is excellent, and the dispersion efficiency is high, which is effective for increasing the contrast ratio.

The pigment dispersant is added for maintenance of deagglomeration and stability of the pigment, and any of those generally used in the art can be used without limitation. Specifically, it is preferable to contain an acrylate-based dispersant containing BMA (butyl methacrylate) or DMAEMA (N, N-dimethylaminoethyl methacrylate). In this case, it is preferable to apply the acrylate-based dispersing agent prepared by the living control method as disclosed in Korean Patent Publication No. 2004-0014311. DISCLOSURE OF THE INVENTION The acrylate- BYK-2000, DISPER BYK-2001, DISPER BYK-2070 and DISPER BYK-2150.

The acrylic dispersants exemplified above may be used alone or in combination of two or more.

As the pigment dispersant, other resin type pigment dispersants other than the acrylic dispersant may be used. The other resin type pigment dispersing agent may be a known resin type pigment dispersing agent, especially a polycarboxylic acid ester such as polyurethane, polyacrylate, unsaturated polyamide, polycarboxylic acid, polycarboxylic acid (partial) Amine salts of polycarboxylic acids, alkylamine salts of polycarboxylic acids, polysiloxanes, long chain polyaminoamide phosphate salts, esters of hydroxyl group-containing polycarboxylic acids and their modified products, or free ) Oil-based dispersants such as amides formed by reaction of a polyester having a carboxyl group with poly (lower alkyleneimine) or salts thereof; Soluble resin or water-soluble polymer compound such as (meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylate ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol or polyvinylpyrrolidone; Polyester; Modified polyacrylates; Adducts of ethylene oxide / propylene oxide, and phosphate esters.

DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-160, BYK (trade name) 164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; EFKA-4060, EFKA-4060, EFKA-4055, EFKA-4055, EFKA-4055, EFKA-4020, EFKA-4015, EFKA-4060, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10 from Lubirzol; Hinoact T-6000, Hinoact T-7000, Hinoact T-8000; available from Kawaken Fine Chemicals; AJISPUR PB-821, Ajisper PB-822, Ajisper PB-823 manufactured by Ajinomoto; FLORENE DOPA-17HF, fluorene DOPA-15BHF, fluorene DOPA-33, and fluorene DOPA-44 are trade names of Kyoeisha Chemical Co., In addition to the above acrylic dispersant, other resin type pigment dispersants may be used alone or in combination of two or more, and may be used in combination with an acrylic dispersant.

The content of the dispersant may be 5 to 60 parts by weight, more preferably 15 to 50 parts by weight, based on 100 parts by weight of the solid content of the pigment, but is not limited thereto. However, if the content of the dispersant is included in the above standard, it is preferable to prevent gelation after dispersion. If the content of the dispersing agent is less than 5 parts by weight, the pigment may become less finely atomized or gelation may occur after dispersion, and when the content of the dispersing agent exceeds 50 parts by weight, the viscosity may become somewhat high .

The colorant may further comprise a dye. The dye can be used without limitation as long as it has solubility in an organic solvent. It is preferable to use a dye which has solubility in an organic solvent and can ensure reliability such as solubility in an alkali developing solution, heat resistance and solvent resistance.

Examples of the dye include acid dyes having an acidic group such as sulfonic acid and carboxylic acid, salts of an acidic dye and a nitrogen-containing compound, sulfonamides of an acidic dye and derivatives thereof, and azo, Based acid dyes and derivatives thereof. Preferably, the dye is a compound classified as a dye in a color index (published by The Society of Dyers and Colourists), or a known dye described in a dyeing note (coloring yarn).

Specific examples of the dye include C.I. As solvent dyes,

C.I. Red dyes such as Solvent Red 8, 45, 49, 89, 111, 122, 125, 130, 132, 146, 179;

C.I. Blue dyes such as Solvent Blue 5, 35, 36, 37, 44, 59, 67 and 70;

C.I. Violet dyes such as solvent violet 8, 9, 13, 14, 36, 37, 47, 49;

C.I. Yellow dyes such as Solvent Yellow 4, 14, 15, 23, 24, 38, 62, 63, 68, 82, 94, 98, 99, 162;

C.I. Orange dyes such as solvent orange 2, 7, 11, 15, 26, 56;

C.I. Green dyes such as Solvent Green 1, 3, 4, 5, 7, 28, 29, 32, 33, 34 and 35, among which C.I. Solvent dye having excellent solubility in an organic solvent. Solvent Red 8, 49, 89, 111, 122, 132, 146, 179; C.I. Solvent Blue 35, 36, 44, 45, 70; C.I. Solvent violet 13 is preferred, and C.I. Solvent Red 8, 122 and 132 are more preferred.

Also, C.I. As an acid dye

CI Acid Red 1, 4, 8, 14, 17, 18, 26, 27, 29, 31, 34, 35, 37, 42, 44, 50, 51, 52, 57, 66, 73, 80, 87, 88 , 91, 92, 94, 97, 103, 111, 114, 129, 133, 134, 138, 143, 145, 150, 151, 158, 176, 182, 183, 198, 206, 211, 215, 216, 217 , 227, 228, 249, 252, 257, 258, 260, 261, 266, 268, 270, 274, 277, 280, 281, 195, 308, 312, 315, 316, 339, 341, 345, 346, 349 Red dyes such as 382, 383, 394, 401, 412, 417, 418, 422, 426;

CI 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 Yellow dyes such as 1,1,1,2,2,2,2,2,2,23,28, 240,242, 243,251 and the like, such as, for example, 190, 193, 196, 197, 199, 202, 203, 204, 205, 207, 212, 214, ;

Orange dyes such as C.I. Acid Orange 6, 7, 8, 10, 12, 26, 50, 51, 52, 56, 62, 63, 64, 74, 75, 94, 95, 107, 108, 169, 173;

CI Acid Blue 1, 7, 9, 15, 18, 23, 25, 27, 29, 40, 42, 45, 51, 62, 70, 74, 80, 83, 86, 87, 90, , 112, 113, 120, 129, 138, 147, 150, 158, 171, 182, 192, 210, 242, 243, 256, 259, 267, 278, 280, 285, 290, 296, 315, , 335, 340 and the like;

Violet dyes such as C.I. Acid Violet 6B, 7, 9, 17, 19, 66 and the like;

Green dyes such as C.I. acid green 1, 3, 5, 9, 16, 25, 27, 50, 58, 63, 65, 80, 104, 105, 106,

CI Acid Red 92, which is excellent in solubility in organic solvents in acid dyes; C. I. Acid Blue 80, 90; C.I. Acid Violet 66 is preferred.

As a C.I. direct dye,

CI Direct Red 79, 82, 83, 84, 91, 92, 96, 97, 98, 99, 105, 106, 107, 172, 173, 176, 177, 179, 181, 182, 184, 204, 207, 211 , 213, 218, 220, 221, 222, 232, 233, 234, 241, 243, 246, 250;

CI 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 , Yellow dyes such as 136, 138, and 141;

Orange dyes such as C.I. Direct Orange 34, 39, 41, 46, 50, 52, 56, 57, 61, 64, 65, 68, 70, 96, 97, 106, 107;

CI Direct Blue 38, 44, 57, 70, 77, 80, 81, 84, 85, 86, 90, 93, 94, 95, 97, 98, 99, 100, 101, 106, 107, 108, 109, 113 , 114, 115, 117, 119, 137, 149, 150, 153, 155, 156, 158, 159, 160, 161, 162, 163, 164, 166, 167, 170, 171, 172, 173, 188, 189 , 190, 192, 193, 194, 196, 198, 199, 200, 207, 209, 210, 212, 213, 214, 222, 228, 229, 237, 238, 242, 243, 244, 245, 247, 248 , 250, 251, 252, 256, 257, 259, 260, 268, 274, 275 and 293;

Violet dyes such as C.I. Direct Violet 47, 52, 54, 59, 60, 65, 66, 79, 80, 81, 82, 84, 89, 90, 93, 95, 96, 103, 104;

Green dyes such as C.I. Direct Green 25, 27, 31, 32, 34, 37, 63, 65, 66, 67, 68, 69, 72, 77, 79,

As C.I. modantoic dyes,

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

CI Modal Red 1, 2, 3, 4, 9, 11, 12, 14, 17, 18, 19, 22, 23, 24, 25, 26, 30, 32, 33, 36, 37, Red dyes such as 41, 43, 45, 46, 48, 53, 56, 63, 71, 74, 85, 86, 88, 90, 94, 95;

CI Modanato Orange 3, 4, 5, 8, 12, 13, 14, 20, 21, 23, 24, 28, 29, 32, 34, 35, 36, 37, 42, 43, dyes;

CI Modanito Blue 1, 2, 3, 7, 8, 9, 12, 13, 15, 16, 19, 20, 21, 22, 23, 24, 26, 30, 31, 32, 39, 43, 44, 48, 49, 53, 61, 74, 77, 83, and 84;

Violet colored dyes such as C.I. Modanth violet 1, 2, 4, 5, 7, 14, 22, 24, 30, 31, 32, 37, 40, 41, 44, 45, 47, 48, 53, 58;

Green dyes such as C.I. Modatto Green 1, 3, 4, 5, 10, 15, 19, 26, 29, 33, 34, 35, 41, 43,

These dyes may be used alone or in combination of two or more.

The content of the dye in the colorant is preferably 0.5 to 80% by weight, more preferably 0.5 to 60% by weight, and more preferably 1 to 50% by weight based on the solid content of the colorant Is particularly preferable. When the content of the dye in the colorant satisfies the above range, it is possible to prevent the problem of lowering the reliability of dye elution by the organic solvent after the pattern formation, and it is advantageous because the sensitivity is excellent.

The colorant may be contained in an amount of 5 to 60 parts by weight, preferably 10 to 45 parts by weight, based on 100 parts by weight of the total solid content in the colored photosensitive resin composition for an organic light emitting diode. When the colorant is contained within the above range, the color density of the pixel is sufficient even if the thin film is formed, and the dropout of the non-oxide part during development is not lowered, so that the residue can be prevented from being generated. If the amount of the colorant is less than 5 parts by weight, the color density of the pixel may not be sufficient. If the amount of the colorant is more than 60 parts by weight, the residue may be somewhat generated.

solvent

The solvent used in the conventional colored photosensitive resin composition is not particularly limited so long as it is effective to dissolve the other components contained in the colored photosensitive resin composition for an organic light emitting diode. Hydrocarbons, ketones, alcohols, esters or amides are preferred.

Specific examples of the solvent include 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 dimethyl ether, diethylene glycol diethyl ether, Diethylene glycol dialkyl ethers such as 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 and propylene glycol monopropyl ether acetate; Alkoxyalkyl acetates such as 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; and cyclic esters such as? -butyrolactone.

The solvent is preferably an organic solvent having a boiling point of 100 ° C to 200 ° C on the application and drying surface, more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl lactate, Decyltate, ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, and the like.

The solvents exemplified above may be used alone or in admixture of two or more. The solvent may be contained in an amount of 60 to 90 parts by weight, preferably 70 to 85 parts by weight, based on 100 parts by weight of the total of the colored photosensitive resin composition for an organic light emitting diode have. When the solvent is contained within the above range, it is possible to provide an effect of improving the applicability when applied with a coating apparatus such as a roll coater, a spin coater, a slit and spin coater, a slit coater (die coater), or an ink jet.

additive

The additive according to the present invention may be optionally added, for example, other polymer compounds, a curing agent, a surfactant, an adhesion promoter, an antioxidant, an ultraviolet absorber, and an antiflocculant.

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

The curing agent is used for deep curing and for increasing mechanical strength. Specific examples of the curing agent include an epoxy compound, a polyfunctional isocyanate compound, a melamine compound, and an oxetane compound.

Specific examples of the epoxy compound in the curing agent include bisphenol A epoxy resin, hydrogenated bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol F epoxy resin, novolac epoxy resin, other aromatic epoxy resin, alicyclic epoxy Aliphatic, alicyclic or aromatic epoxy compounds other than the brominated derivatives, epoxy resins and brominated derivatives of such epoxy resins, butadiene (co) polymeric epoxides, isoprene (co) polymeric epoxy resins, glycidyl ester resins, glycidyl amine resins, (Co) polymer epoxides, glycidyl (meth) acrylate (co) polymers, and triglycidylisocyanurate.

Specific examples of the oxetane compound in the curing agent include carbonates bisoxetane, xylene bisoxetane, adipate bisoxetane, terephthalate bisoxetane, cyclohexanedicarboxylic acid bisoxetane, and the like.

The curing agent may be used together with a curing agent 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. The curing assistant compound includes, for example, polyvalent carboxylic acids, polyvalent carboxylic anhydrides, and acid generators. The polyvalent carboxylic acid anhydrides may be those commercially available as an epoxy resin curing agent. Specific examples of the above-mentioned epoxy resin curing agent include epoxy resin curing agents such as epoxy resins, epoxy resins, epoxy resins, epoxy resins, epoxy resins, epoxy resins, Manufactured by Japan Ehwa Co., Ltd.). The curing agents exemplified above may be used alone or in combination of two or more.

The surfactant may be used to further improve film-forming properties of the photosensitive resin composition, and a fluorine-based surfactant or a silicone-based surfactant may be preferably used.

Examples of the silicone surfactant include DC3PA, DC7PA, SH11PA, SH21PA and SH8400 from Dow Corning Toray Silicone Co., Ltd. and TSF-4440, TSF-4300, TSF-4445, TSF-4446 and TSF-4460 , And TSF-4452. Examples of the fluorine-based surfactant include Megapis F-470, F-471, F-475, F-482 and F-489 commercially available from Dainippon Ink and Chemicals, Incorporated. The above-exemplified surfactants may be used alone or in combination of two or more.

Specific examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- ( 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3- 3-isocyanatopropyltrimethoxysilane, 3-isocyanatepropyltriethoxysilane, and the like.

The adhesion promoters exemplified above may be used alone or in combination of two or more. The adhesion promoter may be contained in an amount of usually 0.01 to 10 parts by weight, preferably 0.05 to 2 parts by weight based on the solid content of the colored photosensitive resin composition for an organic light emitting diode.

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-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzothiazole and alkoxybenzophenone.

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

The additive may be used in an appropriate amount by those skilled in the art, so long as the effects of the present invention are not impaired.

The colored photosensitive resin composition for an organic light emitting diode of the present invention can be produced, for example, by the following method, but is not limited thereto.

First, the pigment in the colorant is mixed with a solvent and dispersed using a bead mill or the like until the average particle diameter of the pigment becomes about 0.2 μm or less. At this time, if necessary, a pigment dispersant, a part or all of the alkali-soluble resin, or a dye may be mixed together with the above-mentioned solvent to dissolve or disperse the resin, and the remainder of the alkali- The photopolymerization initiator and, if necessary, the additive and the solvent are further added to a predetermined concentration so that the colored photosensitive resin composition for an organic light emitting diode according to the present invention can be prepared.

&Lt; Color filter and image display device >

Another aspect of the present invention relates to a color filter manufactured using the above-described colored photosensitive resin composition for an organic light emitting diode.

Further, another aspect of the present invention relates to an image display apparatus including the color filter described above.

The image display apparatus of the present invention is provided with the above-described color filter, and a specific example thereof is a liquid crystal display, an OLED, a flexible display, and the like, but is not limited thereto.

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.

Preparation of colored photosensitive resin composition

The colored photosensitive resin compositions for organic light emitting diodes of Examples 1 to 2 and Comparative Examples 1 and 2 were prepared with the compositions shown in Table 1 below. The mol% of the repeating units containing hydrophilic groups in the repeating units of the alkali- B &quot; is shown in Table 1 below. &Quot; a &quot;

 (Unit: wt%) Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 The pigment dispersion (A) 25.3 25.3 25.3 25.3 25.3 Alkali-soluble resin (B-1) 12.1 - - - - (B-2) - 9.4 - - - (B-3) - - 10.1 - - (B-4) - - - 11.2 - (B-5) - - - - 11.2 a, b a: 11.6
b: 80 a: 40
b: 70 a: 57
b: 40 a: 80
b: 50 a: 0.5
b: 50 a / b 0.145 0.571 1.425 1.6 0.01 The photopolymerizable compound (C) 10 10 10 10 10 Photopolymerization initiator (D) 2.7 2.7 2.7 2.7 2.7 Solvent (E) 49.5 52.2 51.5 50.4 50.4 Additive (F) 0.4 0.4 0.4 0.4 0.4

Preparation of pigment dispersion (A)

C.I. , 12.0 parts by weight of Pigment Blue 15: 6, 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 as a solvent and 40 parts by weight of propylene glycol methyl ether by means of a bead mill Followed by mixing / dispersing to prepare a pigment dispersion (A).

Alkali-soluble resin

Alkali-soluble resin (B-1): Copolymer of methacrylic acid and benzyl methacrylate (the molar ratio of methacrylic acid unit to benzyl methacrylate unit was 11.6: 88.4, acid value was 80 mgKOH / g and the weight average molecular weight in terms of polystyrene was 9,000)

Alkali-soluble resin (B-2): A copolymer of methacrylic acid and benzyl methacrylate (the molar ratio of methacrylic acid unit to benzyl methacrylate unit was 40:60, acid value was 70 mgKOH / g, weight average molecular weight in terms of polystyrene was 8,000)

Alkali-soluble resin (B-3): A copolymer of methacrylic acid and benzyl methacrylate (the molar ratio of methacrylic acid unit to benzyl methacrylate unit was 57:43, acid value was 40 mgKOH / g, weight average molecular weight in terms of polystyrene was 6,500)

Alkali-soluble resin (B-4): copolymer of methacrylic acid and benzyl methacrylate (the molar ratio of methacrylic acid unit to benzyl methacrylate unit was 80:20, acid value was 50 mgKOH / g, weight average molecular weight in terms of polystyrene was 8,000)

Alkali-soluble resin (B-5): A copolymer of methacrylic acid and benzyl methacrylate (the molar ratio of methacrylic acid unit to benzyl methacrylate unit was 0.5: 99.5, acid value was 50 mgKOH / g, weight average molecular weight in terms of polystyrene was 9,000)

Photopolymerizable compound (C): KAYARAD DPHA (Nippon Kayaku Co., Ltd.)

Photopolymerization initiator (D): Irgacure OXE 02 (BASF)

Solvent (E): Propylene glycol monomethyl ether acetate

Additive (F): SH-8400 (Dow Corning)

Color filter ( Glass substrate ) Manufacturing example

Color filters were prepared using the colored photosensitive resin compositions for organic light emitting diodes prepared according to Examples and Comparative Examples. That is, each of the colored photosensitive resin compositions for organic light emitting diodes was coated on a glass substrate by spin coating, and then placed on a heating plate and maintained at a temperature of 100 ° C for 3 minutes to form a thin film. Then, a test photomask having a pattern for changing the transmittance in the range of 1 to 100% in a stepwise manner and a line / space pattern of 1 to 50 m was placed on the thin film and an interval of 100 m from the test photomask was measured. Respectively. At this time, the ultraviolet light source was irradiated at a light intensity of 100 mJ / cm 2 using 1 kW of high pressure mercury containing g, h and i rays, 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 2 minutes to develop. The glass plate coated with the thin film was washed with distilled water, dried by blowing nitrogen gas, and heated in a 220 ° C heating oven for 1 hour to prepare a color filter. The film thickness of the color filter prepared above was 2.0 탆.

Experimental Example  : Color Sensitive Photosensitive Compositions and Evaluation of Physical Properties of Color Filters Prepared Using the Photosensitive Compositions

The color photosensitive compositions prepared in Examples and Comparative Examples and the color filters prepared using them were measured by the following methods.

(1) Developability (Residual property)

After the fabrication of the color filter substrate, the presence or absence and remaining amount of remnants remained without being washed away were observed. "Good" if there was no residue and "Bad" if there was any residue.

(2) Water content

The moisture content was analyzed using a TDS (Thermal Desorption Spectrometer) equipment. The results of the analysis were expressed in ppm and the degree of moisture content was evaluated according to the following criteria. The results are shown in Table 2 below.

○: 4.0E ^-0.1 or less

×: 4.0E ^-0.1 or more

(3) Water stain measurement evaluation

The colored photosensitive resin composition for organic light emitting diode prepared in Examples 1 to 2 and Comparative Examples 1 to 3 was applied to a glass of 5 x 5 cm, dried, and then coated to a thickness of 2.5 m. Thereafter, the solvent was removed by drying in an oven at 100 ° C for 3 minutes, and then the color filter was prepared by exposing the solvent to 200 m of the distance from the photomask to 40 mJ of the 313 nm wavelength of the fusion lamp. The color filter was allowed to stand in distilled water for 10 minutes as shown in FIG. 1, and then blown with nitrogen gas to dry it. Then, a spot between the portion of the color filter and the portion not containing the distilled water was observed with a surface inspection lamp (FY-100R).

The evaluation criteria are as follows. The results are shown in Table 2 below.

○: Dirt was observed (water stain occurred)

X: no staining observed (no water stains)

(4) VD speck evaluation

Each of the colored photosensitive resin compositions for an organic light emitting diode prepared in Examples 1 to 2 and Comparative Examples 1 to 3 was applied to a glass having a size of 5 x 5 cm and the substrate was vacuum-packed using a vacuum chamber at a pressure of 65 Pa And then vacuum drying was performed. After the vacuum-dried substrate was observed with a reflection type optical microscope (observation magnification: 2,500 times), the degree of occurrence of VD unevenness was evaluated according to the following criteria, and the results are shown in Table 2 below.

○: 5 or less stain areas

B: 6 to 10 uneven areas

X: 11 or more uneven areas

Developability Moisture content Water stain VD stain Example 1 Good ○ ○ ○ Example 2 Good ○ ○ ○ Comparative Example 1 Good × × ○ Comparative Example 2 Good × ○ △ Comparative Example 3 Bad ○ ○ ○

As can be seen from Table 2, the colored photosensitive resin composition for an organic light emitting diode according to the present invention has an excellent property that water content is low, developability is excellent, water stain and VD unevenness do not occur.

Claims (6)

1. An organic photosensitive resin composition for an organic light emitting diode comprising an alkali-soluble resin containing at least one hydrophilic group and satisfying the following formula 1:
[Formula 1]
0.1 < a / b < 1.0
In formula (1), a is the mole% of the repeating unit containing the hydrophilic group in the repeating unit of the alkali-soluble resin,
and b is the acid value (mgKOH / g) of the alkali-soluble resin. The method according to claim 1,
Wherein the acid value of the alkali-soluble resin is 30 to 150 mgKOH / g. The method according to claim 1,
Wherein the alkali-soluble resin is contained in an amount of 10 to 80 parts by weight based on the total solid content of the colored photosensitive resin composition. The method according to claim 1,
Wherein the photosensitive resin composition further comprises at least one selected from the group consisting of a photopolymerizable compound, a photopolymerization initiator, a colorant, and a solvent. A color filter produced by using the colored photosensitive resin composition for an organic light emitting diode according to any one of claims 1 to 4. An image display device comprising the color filter of claim 5.

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