TW201940972A - Colored photosensitive resin composition, color filter and image display device using the same no process issue occurs, and holes are prevented from being created in the patterns formed - Google Patents

Abstract

The present invention relates to a colored photosensitive resin composition, an image display device, and a color filter comprising the colored photosensitive resin composition. The colored photosensitive resin composition is characterized by comprising a non-reactive alkali-soluble resin and a photopolymerization initiator (A), and the photopolymerization initiator (A) contains a photopolymerization initiator (a1) having two oxime groups in a molecule. Therefore, the shape of the pattern can be realized in the form of a taper after the post-baking step in the filter process, so that no process issue occurs, and it is possible to prevent holes from being created in the patterns formed.

Description

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

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

The method for forming a filter using a colored photosensitive resin composition mainly includes the steps of forming a coating film of a colored photosensitive resin composition on a substrate or a substrate in which a light-shielding layer having a desired pattern is formed in advance, with A photomask having a predetermined pattern is irradiated with light (hereinafter, referred to as exposure), developed to dissolve and remove unexposed portions, and then post-baked to obtain pixels of each color.

In addition, in recent years, in the technical field of filters, in order to shorten the product production time (Tact time) by reducing the exposure amount, and to meet the recent high requirements for color purity of image display devices, the tendency has generally increased. Since the content (ratio) of the coloring agent in the colored photosensitive resin composition is reduced, the content of components other than the coloring agent is reduced, and problems such as a decrease in adhesiveness during the production of a filter, and generation of residue may occur.

In connection with this, Patent Document 1 describes a photosensitive resin composition for a filter and a filter using the photosensitive resin composition, and the characteristics of the photosensitive resin composition for a filter described above It contains an alkali-soluble resin, an acrylic photopolymerizable monomer, a photopolymerization initiator, a pigment, and a solvent, and the alkali-soluble resin is a) an ethylenically unsaturated monomer containing one or more double bonds represented by a specific chemical formula. Polymer, b) an ethylenically unsaturated monomer having one or more carboxyl groups, and c) a copolymer of an ethylenically unsaturated monomer capable of copolymerizing with the above b) monomer, thereby making it possible to produce no residue, excellent adhesion, and A high-resolution filter composed of ultra-small pixels. However, when a filter is manufactured by using the composition, the shape of the pattern is formed in the form of a reverse bevel before the subsequent heat treatment step (post-baking). cause problems.

Prior art literature

Patent literature

Patent Document 1: Korean Patent Application No. 10-0875269

Problems to be Solved by the Invention

The present invention has been made in order to solve the above-mentioned problems, and an object thereof is to provide a colored photosensitive resin composition capable of forming a positive-slope surface after a post-baking step which is a high-temperature heat treatment in a filter manufacturing process. The morphology forms the shape of the pattern, so that there is no problem in the manufacturing process; and an optical filter and an image display device including the colored photosensitive resin composition are provided.

Problem solving

The colored photosensitive resin composition of the present invention for achieving the above-mentioned object is characterized by including a non-reactive alkali-soluble resin and a photopolymerization initiator (A). The photopolymerization initiator (A) contains two molecules in one molecule. Oxime-based photopolymerization initiator (a1).

Moreover, the optical filter of this invention contains the hardened | cured material of the said coloring photosensitive resin composition, It is characterized by the above-mentioned.

The image display device of the present invention includes the above-mentioned filter.

Invention effect

The colored photosensitive resin composition of the present invention has the advantage that the shape of the pattern can be realized in the form of a regular inclined plane after the post-baking step in the filter manufacturing process, so there is no problem in the manufacturing process.

The filter of the present invention has the same advantages as those described above.

The image display device of the present invention has the same advantages as those described above.

In the present invention, when a component is pointed to be "on" another component, it includes not only the case where a component is in contact with another component, but also the case where there are other components between the two components.

In the present invention, when a certain part “includes” a certain constituent element, it means that as long as there is no particularly contrary description, other constituent elements may be further included without excluding other constituent elements.

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

<Colored photosensitive resin composition>

The colored photosensitive resin composition according to one aspect of the present invention includes a non-reactive alkali-soluble resin and a photopolymerization initiator (A), and the photopolymerization initiator (A) contains two oximes in one molecule. Based photopolymerization initiator (a1), so that the shape of the pattern can be realized in the form of a taper after the post-baking step in the filter manufacturing process, and therefore has the advantage of not causing problems in the manufacturing process, and This has the advantage that holes can be prevented from occurring in the formed pattern.

Non-reactive alkali-soluble resin

The colored photosensitive resin composition according to one aspect of the present invention has the advantage that the shape of the color pattern formed when the filter is manufactured can be realized in the shape of a regular inclined plane by including a non-reactive alkali-soluble resin.

According to an embodiment of the present invention, the glass transition temperature of the non-reactive alkali-soluble resin may be 0 ° C. or lower, and the weight average molecular weight may be 3,000 to 12,000. At this time, the above-mentioned weight average molecular weight refers to a weight average molecular weight in terms of polystyrene measured by a gel permeation chromatography (GPC; using tetrahydrofuran as an elution solvent). The above weight average molecular weight may preferably be 6,000 to 10,000. When the weight average molecular weight falls within the range disclosed by the present invention, it has the following advantages: the hardness of the pattern is increased, the film remaining ratio is increased, and the development The solubility and resolution of non-exposed portions in the liquid are improved.

In addition, according to an aspect of the present invention, the non-reactive alkali-soluble resin may specifically not contain an epoxy group or an unsaturated double bond in its molecule.

According to an embodiment of the present invention, the non-reactive alkali-soluble resin having a glass transition temperature of 0 ° C. or lower may include 10 to 50% by weight, preferably 15 to 40% by weight of repeating units derived from a compound, wherein the The glass transition temperature of the homopolymer of the compound is 0 ° C or lower. The compound may be one selected from the group consisting of ethyl acrylate, n-butyl acrylate, 2-ethylhexyl (meth) acrylate, n-hexyl acrylate, and lauryl (meth) acrylate. The above is not limited to this.

The non-reactive alkali-soluble resin may be a copolymer of a carboxyl group-containing monomer and other monomers that can be copolymerized with the monomer.

Examples of the carboxyl group-containing monomer include unsaturated carboxylic acids such as unsaturated polycarboxylic acids having one or more carboxyl groups in molecules such as unsaturated monocarboxylic acids, unsaturated dicarboxylic acids, and unsaturated tricarboxylic acids. Here, examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, and cinnamic acid. Examples of the unsaturated dicarboxylic acid include maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, and the like. The unsaturated polycarboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, and citraconic anhydride. The unsaturated polycarboxylic acid may be a mono (2- (meth) acryloxyalkyl) ester, and examples thereof include a mono (2-acryloxyethyl) succinate and a succinic acid monoester. (2-Methacryloxyethyl), Mono (2-acryloxyethyl) Phthalate, Mono (2-Methacryloxyethyl) Phthalate, etc. . In addition, the unsaturated polycarboxylic acid may be a mono (meth) acrylate whose diterminal is a dicarboxy polymer, and examples thereof include ω-carboxy polycaprolactone monoacrylate and ω-carboxy polycaprolactone mono Methacrylate, etc. The carboxyl group-containing monomers can be used individually or in combination of two or more kinds.

Examples of other monomers that can be copolymerized with the carboxyl group-containing monomer include, for example, ethylenically unsaturated monomers containing a double bond, styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, P-vinyltoluene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl Aromatic vinyl compounds such as vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p-vinyl benzyl glycidyl ether, indene; methyl acrylate, Methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, n-butyl methacrylate Ester, isobutyl acrylate, isobutyl methacrylate, secondary butyl acrylate, secondary butyl methacrylate, tertiary butyl acrylate, tertiary butyl methacrylate, 2-hydroxyethyl acrylate, methyl formate 2-hydroxyethyl acrylate, acrylic acid 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3- Hydroxybutyl, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate, allyl methacrylate, benzyl acrylate, benzyl methacrylate , Cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate Ester, 2-phenoxyethyl methacrylate, methoxydiethyl methacrylate, isoamyl acrylate, isoamyl methacrylate, dicyclopentadiene acrylate, dicyclomethacrylate Unsaturated carboxylic acid esters such as pentadiene ester, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate, etc. Class; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl acrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethylaminopropyl acrylate, 2-dimethylamine methacrylate Unsaturated carboxylic acids such as propylpropyl, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate, 3-dimethylaminopropyl methacrylate, etc. Amino alkyl esters; glycidyl esters of unsaturated carboxylic acids such as glycidyl acrylate and glycidyl methacrylate; vinyl carboxylates such as vinyl acetate, vinyl propionate, vinyl butyrate, and vinyl benzoate Esters; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether, allyl glycidyl ether; acrylonitrile, methacrylonitrile, α-chloroacrylonitrile, vinylidene dicyanide, etc. Base compounds; acrylamide, methacrylamide, α-chloroacrylamide, N-2-hydroxyethylacrylamide, N-2-hydroxyethylmethacrylamide and other unsaturated amines; Unsaturated pyrimides such as maleimide, N-phenylmaleimide, N-cyclohexylmaleimide, etc .; 1,3-butadiene, isoprene, chloroprene Aliphatic conjugated diene and other polymers; polymer molecular chains of polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, polysiloxane, etc. Macromonomers having a monoacrylfluorenyl group or a monomethacrylfluorenyl group at the terminal. These monomers can be used individually or in mixture of 2 or more types.

Specific examples of the non-reactive alkali-soluble resin include (meth) acrylic acid / (meth) acrylic acid methyl ester / (meth) acrylic acid 2-ethylhexyl copolymer, (meth) acrylic acid / (formyl) Based) benzyl acrylate / 2-ethylhexyl (meth) acrylate copolymer, (meth) acrylic acid / 2-hydroxyethyl (meth) acrylate / benzyl (meth) acrylate / (meth) acrylic acid 2-ethylhexyl copolymer, (meth) acrylic acid / benzyl (meth) acrylate / N-phenylmaleimide / 2-ethylhexyl (meth) acrylate copolymer, (methyl ) Acrylic acid / 2-ethylhexyl (meth) acrylate / styrene / benzyl (meth) acrylate copolymer, (meth) acrylic acid / succinic acid mono (2-propenyloxyethyl) ester / benzene Ethylene / 2-ethylhexyl (meth) acrylate copolymer, (meth) acrylic acid / benzyl (meth) acrylate / 2-ethylhexyl (meth) acrylate / glycerol mono (meth) acrylate Copolymers and the like, but are not limited thereto.

In this specification, a (meth) acrylate means an acrylate and / or a methacrylate.

According to an aspect of the present invention, the acid value of the non-reactive alkali-soluble resin may be 20 to 200 mg KOH / g. In the case where the acid value satisfies the above range, the solubility in the developing solution is improved, the non-exposed portion is easily dissolved, and the sensitivity is increased, so that the pattern of the exposed portion is left during development, so it has the advantage of improving the film retention. At this time, the acid value refers to a measurement value of the amount (mg) of potassium hydroxide required to neutralize 1 gram of an acrylic polymer, and is usually obtained by titration with an aqueous potassium hydroxide solution.

According to an embodiment of the present invention, the content of the non-reactive alkali-soluble resin may be 10 to 80 parts by weight relative to 100 parts by weight of the solid content in the colored photosensitive resin composition including the non-reactive alkali-soluble resin. It may preferably be 20 to 70 parts by weight. When the content of the alkali-soluble resin falls within the above range, there are advantages in that a color pattern can be formed, and resolution and film retention can be improved.

Photopolymerization initiator A )

The coloring photosensitive resin composition according to one aspect of the present invention is made to pass through a photopolymerization initiator (a1) having two oxime groups in one molecule, and has a positive slope after a post-baking step when manufacturing a filter. Morphology realizes the advantages of the shape of the pattern.

In addition, according to an aspect of the present invention, the molecular weight of the photopolymerization initiator (a1) may be 400 to 750. When the above molecular weight is satisfied, there is an advantage that it is easier to realize a positive slope.

The photopolymerization initiator (a1) may specifically include one or more members selected from the group consisting of compounds represented by the following Chemical Formulas 1 to 7.

[Chemical Formula 1]

[Chemical Formula 2]

[Chemical Formula 3]

[Chemical Formula 4]

[Chemical Formula 5]

[Chemical Formula 6]

[Chemical Formula 7]

The above-mentioned photopolymerization initiator (a1) of the present invention can be synthesized and used by a person having ordinary knowledge in organic chemistry by a known method, or a commercially available product can also be used.

According to one aspect of the present invention, the colored photosensitive resin composition of the present invention may further include a photopolymerization initiator (a2) other than the photopolymerization initiator (a1).

The photopolymerization initiator (a2) can be used without particular limitation as long as it can polymerize the photopolymerizable compound described below, and examples thereof include acetophenone-based, benzoin-based, benzophenone-based, Thioxanthone-based, triazine-based, oxime-based, onium salt-based, nitrobenzyl tosylate-based or benzoin tosylate-based and the like. Examples of the acetophenone-based compound include diethoxyacetophenone, 2-methyl-2-morpholinyl-1- (4-methylthiophenyl) propane-1-one, and 2- Hydroxy-2-methyl-1-phenylpropane-1-one, benzophenone dimethyl ketal, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl ] Oligomers of propane-1-one, 1-hydroxycyclohexylphenyl ketone, 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1-one Etc., more preferably 2-methyl-2-morpholinyl-1- (4-methylthiophenyl) propane-1-one. In addition, various acetophenone-based compounds and other photopolymerization initiators may be used in combination. Examples of the photopolymerization initiator other than the acetophenone-based compound include an active radical generator, a sensitizer, and an acid generator that generate an active radical upon irradiation with light. Examples of the active radical generator include a benzoin-based compound, a benzophenone-based compound, a thioxanthone-based compound, a triazine-based compound, or an oxime-based compound. Examples of the benzoin-based compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin isobutyl ether. Examples of the benzophenone-based compound include benzophenone, methyl benzophenone benzoate, 4-phenylbenzophenone, and 4-benzophenone-4'-methyldiphenylsulfide. Ether, 3,3 ', 4,4'-tetrakis (tert-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, etc. Examples of the thioxanthone-based compound include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythioxanthone and the like. Examples of the triazine-based compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine, 2,4-bis (tri Chloromethyl) -6- (4-methoxynaphthyl) -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-tris Hydrazine, 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. Examples of the oxime-based compound include 2- (o-benzophenoxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione, and 1- (4-methylsulfonium) -Phenyl) -butane-1,2-butane-2-oxime-O-acetate, 1- (4-methylsulfonyl-phenyl) -butane-1-one oxime-O -Acetate, hydroxyimino- (4-methylsulfonyl-phenyl) -ethyl acetate-O-acetate, hydroxyimino- (4-methylsulfonyl-phenyl) -Ethyl acetate-O-benzoate and the like. Examples of the sensitizer include 2,4,6-trimethylbenzidinediphenylphosphine oxide and 2,2-bis (o-chlorophenyl) -4,4 ', 5,5'-tetrakis. Phenyl-1,2'-biimidazole, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzoin, 9,10-phenanthrenequinone, camphorquinone, phenylglyoxylate Esters, titanocene compounds, etc. Examples of the acid generator include 4-hydroxyphenyldimethylsulfonium p-toluenesulfonate, 4-hydroxyphenyldimethylsulfonium hexafluoroantimonate, and 4-ethoxyloxyphenyldiamine. Methylsulfonium p-toluenesulfonate, 4-Ethyloxyphenylmethylbenzylsulfonium hexafluoroantimonate, triphenylsulfonium p-toluenesulfonate, triphenylsulfonium hexafluoroantimonate Salts, onium salts such as diphenyliodonium p-toluenesulfonate, diphenyliodonium hexafluoroantimonate, nitrobenzyltosylate, benzoin tosylate, and the like. In addition, among the above-mentioned compounds, there are also compounds which generate both an active radical and an acid. For example, the above-mentioned triazine-based photopolymerization initiator can also be used as an acid generator.

The content of the entire photopolymerization initiator (A) may be 0.1 to 30 parts by weight, based on 100 parts by weight of the solid content in the colored photosensitive resin composition containing the photopolymerization initiator (A), and may be preferably 0.5 to 20 parts by weight. In the case where the content of the photopolymerization initiator (A) falls within the above range, there is an advantage that the sensitivity is improved and the exposure time is shortened, so that productivity can be improved and high resolution can be maintained.

The colored photosensitive resin composition of the present invention may further include a photopolymerization initiation aid as necessary. The photopolymerization initiator may be used in combination with the photopolymerization initiator (A), and may be used to promote the polymerization of a photopolymerizable compound that is polymerized by the photopolymerization initiator (A). Examples of the photopolymerization starting aid include amine compounds, alkoxyanthracene compounds, and thioxanthone compounds. Examples of the amine-based compound include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, and 4-diamine. Isoamyl methylaminobenzoate, 2-dimethylaminoethyl benzoate, 2-ethylhexyl 4-dimethylaminobenzoate, N, N-dimethyl-p-toluidine, 4 4,4'-bis (dimethylamino) benzophenone, 4,4'-bis (diethylamino) benzophenone, 4,4'-bis (ethylmethylamino) di Among them, benzophenone and the like are preferably 4,4'-bis (diethylamino) benzophenone. Examples of the alkoxyanthracene-based compound include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, 2- Ethyl-9,10-diethoxyanthracene and the like. Examples of the thioxanthone-based compound include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, and 2,4-dichlorothioxanthone. , 1-chloro-4-propoxythioxanthone, etc. The aforementioned photopolymerization starting aids can be used alone or in combination of two or more kinds. In addition, as the photopolymerization initiation aid, a commercially available product may be used, and as the commercially available photopolymerization initiation aid, for example, EAB-F (product of Hodogaya Chemical Industry Co., Ltd.) and the like. Preferred combinations of the photopolymerization initiator and the photopolymerization initiation aid in the colored photosensitive resin composition of the present invention include, for example, diethoxyacetophenone / 4,4'-bis (diethyl Amino) benzophenone, 2-methyl-2-morpholinyl-1- (4-methylthiophenyl) propane-1-one / 4,4'-bis (diethylamino) di Benzophenone, 2-hydroxy-2-methyl-phenylpropane-1-one / 4,4'-bis (diethylamino) benzophenone, 2-hydroxy-2-methyl-1- [4- (2-hydroxyethoxy) phenyl] propane-1-one / 4,4'-bis (diethylamino) benzophenone, 1-hydroxycyclohexylphenylketone / 4,4 Oligomer of '-bis (diethylamino) benzophenone, 2-hydroxy-2-methyl-1- [4- (1-methylvinyl) phenyl] propane-1-one / 4,4'-bis (diethylamino) benzophenone, 2-benzyl-2-dimethylamino-1- (4-morpholinylphenyl) butane-1-one / 4 A combination of 4'-bis (diethylamino) benzophenone and the like, and more preferably, for example, 2-methyl-2-morpholinyl-1- (4-methylthiophenyl) propane- 1-keto / 4,4'-bis (diethylamino) benzophenone combination. In the case where the photopolymerization initiator and the photopolymerization initiator are used together as described above, the amount of the photopolymerization initiator is preferably 10 mol or less per mol of the photopolymerization initiator. More preferably, it is 0.01 to 5 moles.

The colored photosensitive resin composition according to an embodiment of the present invention may further include one or more selected from the group consisting of a coloring agent, a photopolymerizable compound, a solvent, and an additive.

Colorant

The colorant can be used in various applications depending on the use of the filter. In the present invention, the type is not particularly limited.

The colorant may be any one of a pigment, a dye, or a natural pigment. As the pigment, a compound classified as a pigment in the color index (published by The Society of Dyers and Colourists) can be used. Considering that the coloring agent of the present invention is excellent in heat resistance and color developability, an organic pigment is preferred.

Specific examples of preferred pigments that can be used in the present invention include:

CI Pigment Yellow 1, CI Pigment Yellow 3, CI Pigment Yellow 12, CI Pigment Yellow 13, CI Pigment Yellow 14, CI Pigment Yellow 15, CI Pigment Yellow 16, CI Pigment Yellow 17, CI Pigment Yellow 20, CI Pigment Yellow 24, CI Pigment Yellow 31, CI Pigment Yellow 53, CI Pigment Yellow 83, CI Pigment Yellow 86, CI Pigment Yellow 93, CI Pigment Yellow 94, CI Pigment Yellow 109, CI Pigment Yellow 110, CI Pigment Yellow 117, CI Pigment Yellow 125, CI Pigment Yellow 128, CI Pigment Yellow 137, CI Pigment Yellow 138, CI Pigment Yellow 139, CI Pigment Yellow 147, CI Pigment Yellow 148, CI Pigment Yellow 150, CI Pigment Yellow 153, CI Pigment Yellow 154, CI Pigment Yellow 166, CI Pigment Yellow 173, CI Pigment Yellow 194, CI Pigment Yellow 214 and other yellow pigments;

CI Pigment Orange 13, CI Pigment Orange 31, CI Pigment Orange 38, CI Pigment Orange 40, CI Pigment Orange 42, CI Pigment Orange 43, CI Pigment Orange 51, CI Pigment Orange 55, CI Pigment Orange 59, CI Pigment Orange 61, CI Pigment Orange 64, CI Pigment Orange 65, CI Pigment Orange 71, CI Pigment Orange 73 and other orange pigments;

CI Pigment Red 9, CI Pigment Red 97, CI Pigment Red 105, CI Pigment Red 122, CI Pigment Red 123, CI Pigment Red 144, CI Pigment Red 149, CI Pigment Red 166, CI Pigment Red 168, CI Pigment Red 176, CI Pigment Red 177, CI Pigment Red 180, CI Pigment Red 192, CI Pigment Red 209, CI Pigment Red 215, CI Pigment Red 216, CI Pigment Red 224, CI Pigment Red 242, CI Pigment Red 254, CI Pigment Red 264, CI Pigment Red 265 and other red pigments;

C.I.Pigment Blue 15, C.I.Pigment Blue 15: 3, C.I.Pigment Blue 15: 4, C.I.Pigment Blue 15: 6, C.I.Pigment Blue 60 and other blue pigments;

C.I.Pigment Purple 1, C.I.Pigment Purple 19, C.I.Pigment Purple 23, C.I.Pigment Purple 29, C.I.Pigment Purple 32, C.I.Pigment Purple 36, C.I.Pigment Purple 38 and other purple pigments;

C.I.Pigment Green 7, C.I.Pigment Green 36, C.I.Pigment Green 58 and other green pigments;

C.I.Pigment Brown 23, C.I.Pigment Brown 25 and other brown pigments;

Black pigments such as C.I. Pigment Black 1, C.I. Pigment Black 7, and the like.

Among them, it is preferably selected from the group consisting of CI Pigment Yellow 138, CI Pigment Yellow 139, CI Pigment Yellow 150, CI Pigment Red 177, CI Pigment Red 209, CI Pigment Red 254, CI Pigment Violet 23, CI Pigment Blue 15: 6, and One or more pigments of CI Pigment Green 36.

The above-mentioned organic pigments and inorganic pigments may be used individually, or two or more of them may be used in combination. For example, CI pigment red 254 and CI pigment yellow 139 are included when red pixels are formed, CI pigment green 58, CI pigment yellow 150 or CI pigment yellow 138 are included when green pixels are formed, and CI pigment blue 15 is included when blue pixels are formed. : 6, respectively, are better for improving color reproducibility, but are not limited thereto.

As long as the said dye of this invention has solubility in an organic solvent, 1 or more types can be used without restriction. It is preferable to use a dye that has solubility in organic solvents and can ensure the solubility in alkali developing solution and the reliability such as heat resistance and solvent resistance. As the dye, an acidic dye having an acidic group such as a sulfonic acid, a carboxylic acid, or the like, a salt of an acidic dye and a nitrogen-containing compound, a sulfonamide of an acidic dye, or a derivative thereof may be used. Azo-based, xanthene-based, phthalocyanine-based acid dyes and their derivatives. Examples of the dye include a compound classified as a dye in a color index (published by The Society of Dyers and Colourists), or a well-known dye described in a dyeing manual (color dyeing company).

As specific examples of the above-mentioned dyes, for C.I. solvent dyes, there may be mentioned:

C.I. Solvent Yellow 4, 14, 15, 21, 23, 24, 38, 62, 63, 68, 82, 94, 98, 99, 162 and other yellow dyes;

C.I. Solvent red 8, 45, 49, 122, 125, 130 and other red dyes;

C.I. Solvent orange 2, 7, 11, 15, 26, 45, 56, 62 and other orange dyes;

C.I. Solvent blue 35, 37, 45, 59, 67 and other blue dyes;

C.I. Solvent green 1, 3, 4, 5, 7, 28, 29, 32, 33, 34, 35 and other green dyes.

Examples of C.I. acid dyes include:

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 , 190, 193, 196, 197, 199, 202, 203, 204, 205, 207, 212, 214, 220, 221, 228, 230, 232, 235, 238, 240, 242, 243, 251 and other yellow dyes;

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 , 382, 383, 394, 401, 412, 417, 418, 422, 426 and other red dyes;

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 and other orange dyes;

CI Acid Blue 1, 7, 9, 15, 18, 23, 25, 27, 29, 40, 42, 45, 51, 62, 70, 74, 80, 83, 86, 87, 90, 92, 96, 103 , 112, 113, 120, 129, 138, 147, 150, 158, 171, 182, 192, 210, 242, 243, 256, 259, 267, 278, 280, 285, 290, 296, 315, 324: 1 , 335, 340 and other blue dyes;

C.I. Violet dyes such as acid violet 6B, 7, 9, 17, 19;

C.I. Green dyes such as acid green 1, 3, 5, 9, 16, 25, 27, 50, 58, 63, 65, 80, 104, 105, 106, 109, etc.

Examples of C.I. direct dyes include:

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 , 136, 138, 141 and other yellow dyes;

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 and other red dyes;

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

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, 293 and other blue dyes;

C.I. Direct violet 47, 52, 54, 59, 60, 65, 66, 79, 80, 81, 82, 84, 89, 90, 93, 95, 96, 103, 104 and other purple dyes;

C.I. Direct green 25, 27, 31, 32, 34, 37, 63, 65, 66, 67, 68, 69, 72, 77, 79, 82 and other green dyes.

Examples of C.I. media dyes include:

C.I.Medium yellow 5, 8, 10, 16, 20, 26, 30, 31, 33, 42, 43, 45, 56, 61, 62, 65 and other yellow dyes;

CI Medium Red 1, 2, 3, 4, 9, 11, 12, 14, 17, 18, 19, 22, 23, 24, 25, 26, 30, 32, 33, 36, 37, 38, 39, 41 , 43, 45, 46, 48, 53, 56, 63, 71, 74, 85, 86, 88, 90, 94, 95 and other red dyes;

C.I. Medium orange 3, 4, 5, 8, 12, 13, 14, 20, 21, 23, 24, 28, 29, 32, 34, 35, 36, 37, 42, 43, 47, 48 and other orange dyes;

CI Media Blue 1, 2, 3, 7, 8, 9, 12, 13, 15, 16, 19, 20, 21, 22, 23, 24, 26, 30, 31, 32, 39, 40, 41, 43 , 44, 48, 49, 53, 61, 74, 77, 83, 84 and other blue dyes;

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

C.I. Medium green 1, 3, 4, 5, 10, 15, 19, 26, 29, 33, 34, 35, 41, 43, 53 and other green dyes.

The content of the colorant is 10 to 70 parts by weight, and preferably 20 to 60 parts by weight based on 100 parts by weight of the solid content in the colored photosensitive resin composition containing the colorant. When the content of the colorant falls within the above range, the color density at the time of forming the filter is sufficient, and a pattern with sufficient mechanical strength can be formed.

In the present invention, the solid content of the colored photosensitive composition means a total of components after the solvent is removed.

The organic pigments in the above pigments may be subjected to the following treatments as required: surface treatment using pigment derivatives having an acidic group or a basic group introduced; graft treatment of the pigment surface with a polymer compound or the like; and use of sulfuric acid particles Micronization treatment such as a refinement method; washing treatment using an organic solvent or water to remove impurities; or removal treatment such as an ion exchange method using an ionic impurity. The colorant is preferably uniform in particle diameter. When the colorant is a pigment, a pigment dispersion liquid in which a pigment is uniformly dispersed in a solution can be obtained by performing a dispersion treatment by adding a pigment dispersant.

The pigment is preferably used in the form of a pigment dispersion liquid in which the particle diameter is uniformly dispersed. Examples of a method for uniformly dispersing the particle diameter of the pigment include a method of performing a dispersion treatment by adding a pigment dispersant, and the like, and by this method, a pigment dispersion liquid in which a pigment is uniformly dispersed in a solution can be obtained.

Specific examples of the pigment dispersant include, for example, surfactants such as cationic, anionic, nonionic, amphoteric, polyester, and polyamine surfactants. They can be used alone or in combination of two types. Use in combination.

The pigment dispersant is added for the purpose of decoagulation of the pigment and maintaining stability, and pigment dispersants generally used in the art can be used without limitation. An acrylic dispersant (hereinafter, referred to as an acrylic dispersant) containing BMA (butyl methacrylate) or DMAEMA (N, N-dimethylaminoethyl methacrylate) is preferably contained. At this time, as the acrylic dispersant, a dispersant manufactured by a transmission activity control method as disclosed in Korean Patent Publication No. 2004-0014311 is preferably used as a commercially available product of an acrylic dispersant manufactured by the activity control method. Examples include DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070, DISPER BYK-2150, and the like, but are not limited thereto, and they can be used individually or in combination of two or more kinds.

The dispersant may be a resin-based pigment dispersant other than the acrylic dispersant. Examples of the other resin-based pigment dispersants include known resin-based pigment dispersants, and in particular, polyurethanes, polycarboxylates represented by polyacrylates, unsaturated polyamines, and polycarboxylic acids (Partial) amine salts of polycarboxylic acids, ammonium salts of polycarboxylic acids, alkylamine salts of polycarboxylic acids, polysiloxanes, long-chain polyaminophosphonium phosphates, esters of hydroxy-containing polycarboxylic acids, and An oily dispersant such as amidine or its salt formed by the reaction of a modified product or a polyester having a free carboxyl group with poly (lower alkyleneimine); (meth) acrylic acid-styrene copolymerization Polymers, (meth) acrylic acid- (meth) acrylate copolymers, styrene-maleic acid copolymers, polyvinyl alcohol or polyvinylpyrrolidone, and other water-soluble resins or water-soluble polymer compounds; polyesters; modified polymers Acrylates; ethylene oxide / propylene oxide addition products and phosphate esters. Examples of commercially available resin-based dispersants include cationic resin dispersants, for example, the trade names of BYK Chemical Company: 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; Trade names of BASF (BASF): 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 of Lubrizol: SOLSPERS-24000, SOLSPERS-32550, NBZ-4204 / 10; Trade names of Chuanyan Refining & Chemical Company: HINOACT T-6000, HINOACT T-7000, HINOACT T- 8000; Trade names of Ajinomoto: AJISPUR PB-821, AJISPUR PB-822, AJISPUR PB-823; Trade names of Kyoeisha Chemical Company: FLORENE DOPA-17HF, FLORENE DOPA-15BHF, FLORENE DOPA-33, FLORENE DOPA-44 and so on. The other resin-based pigment dispersants other than the acrylic dispersant may be used alone or in combination of two or more kinds, and may be used in combination with the acrylic dispersant.

In the case where the coloring photosensitive resin composition further contains a pigment dispersant, the content of the pigment dispersant may be 1 part by weight or less, and more preferably 0.05 part by weight or more to 1 part by weight of the coloring agent included together. 0.5 parts by weight or less. When the use amount of the pigment dispersant falls within the above range, a uniformly dispersed pigment can be obtained.

Photopolymerizable compound

The photopolymerizable compound is not particularly limited in the present invention as long as it is a compound that can be polymerized by living radicals, acids, and the like generated by a photopolymerization initiator through irradiation of light. Examples of the number include monofunctional, difunctional, and trifunctional or higher polyfunctional polymerizable compounds.

Specific examples of the monofunctional polymerizable compound include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, and acrylic acid 2 -Hydroxyethyl, N-vinylpyrrolidone and the like.

Specific examples of the difunctional polymerizable compound include 1,6-hexanediol (meth) acrylate, ethylene glycol di (meth) acrylate, and neopentyl glycol di (meth) acrylate. , Triethylene glycol di (meth) acrylate, bis (acryloxyethyl) ether of bisphenol A, 3-methylpentanediol di (meth) acrylate, butanediol dimethacrylic acid Ester, hexanediol di (meth) acrylate, diethylene glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, tetraethylene glycol di (meth) acrylate, poly Ethylene glycol di (meth) acrylate, dipropylene glycol diacrylate, tripropylene glycol diacrylate, ethoxylated neopentyl glycol diacrylate, propoxylated neopentyl glycol diacrylate, and the like.

Specific examples of the trifunctional or higher polyfunctional polymerizable compound include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, and ethoxylated trimethylolpropane tri Trifunctional polymerizable compounds such as (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate, glycerol propoxylated triacrylate, isocyanurate triacrylate; pentaerythritol tetra Tetrafunctional polymerizable compounds such as (meth) acrylate and dimethylolpropane tetra (meth) acrylate; pentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate and the like Polymerizable compounds.

Among them, the above photopolymerizable compounds can be used individually or in combination of two or more kinds. Specifically, it is preferable to use a difunctional or more polyfunctional polymerizable compound, and it is particularly preferable to use a pentafunctional or more polyfunctional polymerizable compound. Compounds, but not limited thereto.

The content of the photopolymerizable compound may be 5 to 50 parts by weight, and preferably 7 to 45 parts by weight, based on 100 parts by weight of the solid content in the coloring photosensitive resin composition containing the photopolymerizable compound. When the content of the photopolymerizable compound falls within the above range, there is an advantage that the strength and smoothness of the pixel portion can be improved.

Solvent

The solvent of the present invention can be used without particular limitation as long as it can effectively disperse or dissolve other constituent components contained together, and it is preferable to use, for example, ethers, aromatic hydrocarbons, ketones, alcohols, esters, or amidines. Class, etc.

Examples of the ethers include tetrahydrofuran, tetrahydropyran, 1,4-dioxane, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, and ethyl ether. Glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl Ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, propylene glycol methyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate Ester, methyl cyperthre acetate, ethyl cyperthre acetate, ethyl carbitol acetate, butyl carbitol acetate, propylene glycol methyl ether acetate, methoxybutyl Methyl acetate, methoxypentyl acetate, anisole, phenyl ether, or methyl anisole.

Examples of the aromatic hydrocarbons include benzene, toluene, xylene, and mesitylene.

Examples of the ketones include acetone, 2-butanone, 2-heptanone, 3-heptanone, 4-heptanone, 4-methyl-2-pentanone, cyclopentanone, and cyclohexanone. .

Examples of the alcohols include methanol, ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, and glycerol.

Examples of the esters include ethyl acetate, n-butyl acetate, isobutyl acetate, pentyl formate, isoamyl acetate, isobutyl acetate, butyl propionate, isopropyl butyrate, and butyl acetate. Ethyl acetate, butyl butyrate, methyl lactate, ethyl lactate, methyl oxyacetate, ethyl oxyacetate, butyl oxyacetate, methyl methoxyacetate, ethyl methoxyacetate, methoxyacetic acid Butyl, methyl ethoxyacetate, ethyl ethoxyacetate, methyl 3-oxopropionate, ethyl 3-oxopropionate, methyl 3-methoxypropionate, 3-methoxypropionate Ethyl ester, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, methyl 2-oxopropionate, ethyl 2-oxopropionate, propyl 2-oxopropionate, 2-methyl Methyloxypropionate, ethyl 2-methoxypropionate, propyl 2-methoxypropionate, methyl 2-ethoxypropionate, ethyl 2-ethoxypropionate, 2-oxo Methyl-2-methylpropionate, ethyl 2-oxo-2-methylpropionate, methyl 2-methoxy-2-methylpropionate, 2-ethoxy-2-methylpropionate Ethyl acetate, methyl pyruvate, ethyl pyruvate, propyl pyruvate, methyl acetate, ethyl acetate, ethyl 2-oxobutanoate, ethyl 2-oxobutanoate Esters, 3-methoxybutyl acetate, 3-methyl-3-methoxybutyl acetate or γ-butyrolactone and the like.

Examples of the amidoamines include N, N-dimethylformamide and N, N-dimethylacetamide.

Examples of the other solvents include N-methylpyrrolidone and dimethylsulfinium.

The above solvents can be used individually or in combination of two or more kinds. Among them, ethyl 3-ethoxypropionate, propylene glycol monomethyl ether acetate, or propylene glycol methyl ether is preferably used. The coloring photosensitive resin composition of the solvent is 100 parts by weight as a whole, and the content of the solvent may be 10 to 90 parts by weight. When the content of the solvent falls within the above range, the flatness is good when the colored photosensitive resin composition is applied, and the color density is sufficient when the filter is formed, and thus there is an advantage that display characteristics can be improved.

additive

The colored photosensitive resin composition may contain additives such as a defoaming agent, a surfactant, a thermal cross-linking agent, a tackifier, and an antioxidant in addition to the above-mentioned components to improve performance.

The surfactant is a component that can improve the adhesion between the substrate and the colored photosensitive resin composition. For example, a fluorinated surfactant, a nonionic surfactant, a cationic surfactant, an anionic surfactant, and Various surfactants such as silicone surfactants. They can be used alone or in combination of two or more.

Specific examples of the fluorine-containing surfactant include MAGAFAC F171, F172, F173, F176, F177, F141, F142, F143, F144, R30, F437, F475, F479, F482, F554, F780, and F781 (trade names) DIC products); FLUORAD FC430, FC431 and FC171 (trade names, products of Sumitomo 3M Co., Ltd.); SURFLON S-382, SC-101, SC-103, SC-104, SC-105, SC1068, SC-381, SC-383, S393 and KH-40 (trade names, products of Asahi Glass Co., Ltd.); SOLSPERSE 20000 (trade names, products of Lubrizol Japan Co., Ltd.), etc.

Specific examples of the nonionic surfactant include glycerol, trimethylolpropane, trimethylolethane, and ethoxylates or propoxylates thereof (for example, propoxylated glycerol or ethoxylate). Glycerol); PLURONIC L10, L31, L61, L62, 10R5, 17R2, and 25R2, and TETRONIC 304, 701, 704, 901, 904, and 150R1 (trade names, BASF products) and other polyoxyethylene lauryl ether, polyoxyethylene Stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol dilaurate, polyethylene glycol distearate, Sorbitan fatty acid esters and the like.

Specific examples of the cationic surfactant include phthalocyanine modified compounds such as EFKA-745 (trade name, product of Morishita Co., Ltd.), and organosiloxane polymers such as KP341 (trade name, product of Shin-Etsu Chemical Co., Ltd.); POLYFLOW No.75, No.90, No.95 (trade names, products of Kyoeisha Chemical Co., Ltd.) and other (meth) acrylic (co) polymers, W001 (trade names, products of Yushang Co., Ltd.), etc.

Specific examples of the anionic surfactant include W004, W005, and W017 (trade names, products of Yushang Co., Ltd.) and the like.

Specific examples of silicone surfactants include TORAY SILICONE DC3PA, SH7PA, DC11PA, SH21PA, SH28PA, SH29PA, SH30PA, and SH8400 (trade names, products of Dow Corning Toray Co., Ltd.), TSF-4440, 4300, 4445, 4460 and 4452 (commercial names, products of Momentive Advanced Materials Co., Ltd.), KP341, KF6001 and KF6002 (commercial names, products of Shin-Etsu Chemical Co., Ltd.), BYK307, 323, and 330 (commercial names, Biok Chemicals), etc.

The said thermal crosslinking agent is a component which can advance the crosslinking reaction by UV irradiation and heat processing smoothly at the time of forming a coating film of a colored photosensitive resin composition, and can improve heat resistance. Examples include polyacrylate resins, epoxy resins, phenol resins, melamine resins, organic acids, amine compounds, and anhydrous compounds.

The above tackifier has the following advantages: it can improve the adhesion with inorganic substances that can be used as a substrate, such as silicon compounds such as silicon, silicon oxide, and silicon nitride; metals such as gold, copper, and aluminum; and it can improve regulation Its ability to taper with the substrate. For example, a silane coupling agent or a thiol-based compound is mentioned, and a silane coupling agent is preferably used.

The type of the silane coupling agent is not particularly limited. Specific examples include γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxysilane, and γ-glycidoxypropyl. Trialkoxysilane, γ-glycidoxypropylalkyldialkoxysilane, γ-methacryloxypropyltrialkoxysilane, γ-methacryloxypropylalkane Dialkoxysilane, γ-chloropropyltrialkoxysilane, γ-mercaptopropyltrialkoxysilane, β- (3,4-epoxycyclohexyl) ethyltrialkoxysilane, ethylene Examples of preferred examples include γ-glycidoxypropyltrialkoxysilane and γ-methacryloxypropyltrialkoxysilane, and more preferred examples include γ -Glycidoxypropyltrialkoxysilane. They can be used alone or in combination of two or more.

Examples of the above-mentioned antioxidants include 2-tertiary-butylphenol, 2,6-di-tertiary-butylphenol, 2,4-di-tertiary-butylphenol, and 2-secondary-butylphenol , 2,6-di-secondary butylphenol, 2,4-di-secondary butylphenol, 2-isopropylphenol, 2,6-diisopropylphenol, 2,4-diisopropyl Phenol, 2-tertiary octylphenol, 2,6-di-tertiary octylphenol, 2,4-di-tertiary octylphenol, 2-cyclopentylphenol, 2,6-dicyclopentylphenol , 2,4-dicyclopentylphenol, 2-tertiary butyl-p-cresol, 2,6-di-tertiary pentylphenol, 2,4-di-tertiary pentylphenol, 6-tertiary Butyl-o-cresol, 2,6-di-tertiary dodecylphenol, 2,4-di-tertiary dodecylphenol, 2-secondary butyl-p-cresol, 2,6- Di-tertiary octylphenol, 2,4-di-tertiary octylphenol, 6-secondary butyl-o-cresol, 2-tertiary octyl-p-cresol, 2-tertiary dodecyl -P-cresol, 2-tertiary butyl-6-isopropylphenol, 6-tertiary octyl-o-cresol, 6-tertiary dodecyl-o-cresol, 4,4'-butylene Bis (3-methyl-6-tertiarybutylphenol), octadecyl-3- (3,5-di-tertiarybutyl-4-hydroxyphenyl) propene Ester, 4,4'-butylene bis (6-tetra-butyl-3-methylphenol), 4,4'-thio-bis (3-methyl-6-tertiary butylphenol), tris Ethylene glycol-bis [3- (3-tertiarybutyl-5-methyl-4-hydroxyphenyl) propionate], 1,6-hexanediol-bis [3- (3,5-di -Tertiary butyl-4-hydroxyphenyl) propionate], pentaerythritol-tetrakis [3- (3,5-di-tertiary butyl-4-hydroxyphenyl) propionate], 1,3, 5-trimethyl-2,4,6-tris (3,5-di-tertiary-butyl-4-hydroxybenzyl) benzene, 2,6-di-tertiary-butyl-4-ethylphenol, 2,2'-methylenebis (4-methyl-6-tert-butylphenol), 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) Butane, 1,3,5-tris (4-hydroxybenzyl) benzene, and tetrakis [methylene-3- (3,5'-di-tert-butyl-4'-hydroxyphenylpropionate )] Methane and the like, preferably the antioxidant represented by the following Chemical Formula 8 can be used, and one or two or more of them can be used.

[Chemical Formula 8]

(In the above Chemical Formula 8,

R ₁ , R ₂ , R ₃ , R ₄ and R ₅ each independently represent a linear or cyclic alkyl group having 1 to 10 carbon atoms or hydrogen. )

The manufacturing method of the colored photosensitive resin composition of this invention can use the method normally used in the field without limitation, For example, it can manufacture by the following method. The colorant is mixed with a solvent in advance and dispersed with a bead mill or the like until the average particle diameter of the coloring material becomes about 0.2 μm or less. In this case, a pigment dispersant may be used as necessary, and some or all of the alkali-soluble resin may be used in combination. To the obtained dispersion (hereinafter, also sometimes referred to as a paint paste), the remaining alkali-soluble resin, photopolymerizable compound, photopolymerization initiator, additives, other components used as necessary, and additional components as needed are further added. The solvent is mixed at a predetermined concentration to obtain a target colored photosensitive resin composition.

＜ Filters ＞

The optical filter according to another aspect of the present invention has the advantage that the shape of the pattern can be produced in the form of a regular bevel after the post-baking step in the manufacturing process, because the cured product containing the above-mentioned colored photosensitive resin composition passes through. Prevents problems in the manufacturing process, and prevents holes in the pattern.

The filter of the present invention can be manufactured without particular limitation using a manufacturing method generally used in the art, and is exemplified and described with reference to FIGS. 1 to 3, and the content is as follows.

In order to manufacture a filter by using the colored photosensitive resin composition of the present invention, it is necessary to form a colored pattern. To this end, the above-mentioned colored photosensitive resin composition is subjected to a patterning treatment. Specifically, referring to FIG. 1, the color layer 11 formed of the colored photosensitive resin composition of the present invention is formed on the substrate 10. At this time, the type of the substrate 10 is not particularly limited, and may be the substrate of the filter itself, or a part of a part where the filter is located in a display device or the like. The substrate 10 may be a glass plate, a silicon wafer, a plastic plate such as Poly Ether Sulfone (PES), polycarbonate (Poly Carbonate, PC), or the like. That is, the substrate 10 may be a silicon (Si), silicon oxide (SiOx), or glass substrate, or may be a polymer substrate. As described above, in order to form the color layer 11 made of the colored photosensitive resin composition on the substrate 10, the colored photosensitive resin composition diluted with a solvent may be permeated by, for example, spin coating, slit spin coating, or slit coating. Coating methods such as coating, roll coating, spraying, and inkjet are applied to the substrate, and then volatile components such as solvents are volatilized. Thereby, a color layer 11 composed of a colored photosensitive resin composition is formed. The color layer 11 is composed of a solid component of the colored photosensitive resin composition and contains almost no volatile components. The thickness of the film surface is determined according to the coating conditions such as the viscosity of the composition, the concentration of the solid content, and the coating speed. When the composition of the present invention is used, a color layer 11 having a thickness of 0.5 to 5 microns can be obtained.

Next, referring to FIG. 2, the color layer 11 made of the colored photosensitive resin composition on the substrate 10 is exposed to light 30 (exposure). For the exposure, for example, the color layer 11 is irradiated with light 30 in a predetermined pattern via a mask 20. At this time, as the light 30, g-line (wavelength: 436 nm), h-line, i-line (wavelength: 365 nm), etc. of ultraviolet rays are generally used. The light 30 passes through according to the pattern of the mask 20. The above-mentioned photomask 20 provides a light-shielding layer that blocks light in a predetermined pattern on the surface of the glass plate. The light 30 is blocked by the light shielding layer. The portion of the glass plate that is not provided with a light shielding layer is a light transmitting portion that transmits light. The color layer 11 is exposed in accordance with the pattern of the light transmitting portion. The irradiation amount of the light 30 is appropriately selected according to the coloring photosensitive resin composition used.

The part irradiated with the light 30 has a significantly smaller solubility than the part not irradiated with the light 30, and the difference in solubility between the two is maximized. Therefore, the difference is used to perform the developing operation. For development, for example, the colored photosensitive resin composition layer after exposure is immersed in a developer. As the developer, an alkali compound such as an aqueous solution of sodium carbonate, sodium hydroxide, potassium hydroxide, potassium carbonate, tetramethylammonium hydroxide, or the like is used. Referring to FIG. 3, the light 30 unirradiated area in the color layer 11 formed on the substrate 10 that is not irradiated with the light 30 is removed through the above-described development. In contrast, the light-irradiated area irradiated with the light 30 remains and forms the colored pattern 11R. After development, the above-mentioned layer is usually washed with water and dried to obtain a predetermined colored pattern 11R. After drying, heat treatment may be performed. The colored pattern 11R formed by the heat treatment is cured, and its mechanical strength is improved. Thereby, since the mechanical strength of the colored pattern 11R can be improved by heat treatment, it is preferable to use a colored photosensitive composition containing a curing agent. The heating temperature is usually 180 ° C or higher, and preferably 200 to 250 ° C.

<Image display device>

The image display device according to still another aspect of the present invention is provided with the above-mentioned filter, so that no problem occurs in the manufacturing process, and therefore has the advantage of generating fewer defects. Specific examples of the image display device include a liquid crystal display (liquid crystal display device; LCD), an organic EL display (organic EL display device), a liquid crystal projector, a display device for a game machine, and a mobile phone, such as a mobile terminal. Devices, display devices for digital cameras, display devices such as display devices for vehicle navigation, and the like are particularly suitable for color display devices.

The image display device may include other components that a general image display device may include, such as a light emitting device such as a light source, a light guide plate, a liquid crystal display unit including the filter of the present invention, and the like is not limited in the present invention.

In the following, in order to help understand the present invention and provide preferred embodiments, it will be apparent to those skilled in the art that the embodiments described below are merely illustrative of the present invention, and can be variously performed within the scope of the present invention and the scope of technical ideas Changes and modifications. Of course, these changes and modifications also belong to the scope of the attached patent application scope. In the following examples and comparative examples, unless otherwise mentioned, the "%" and "parts" indicating content are based on weight.

Examples and Comparative Examples

Mixing was performed according to the composition and content of Table 1 below to produce a colored photosensitive resin composition.

[Table 1]

[Chemical Formula 9]

[Chemical Formula 10]

[Chemical Formula 11]

[Chemical Formula 12]

[Chemical Formula 13]

Manufacturing example: manufacture of filters

Each of the colored photosensitive resin compositions produced in the above examples and comparative examples was spin-coated on a glass substrate, then placed on a hot plate and maintained at 100 ° C. for 3 minutes to form a thin film. Next, a test mask having a line / gap pattern of 1 micrometer to 50 micrometers was placed on the above film, and ultraviolet rays were irradiated at a distance of 100 micrometers from the test mask. At this time, the ultraviolet light source was irradiated with a light source of 1 kW high-pressure mercury lamp including g, h, and i lines at an intensity of 50 mJ / cm ² (mJ / cm ² ), and no special optical filter was used. The thin film irradiated with the ultraviolet ray was immersed in a KOH aqueous solution developing solution at pH 10.5 for 1 minute to develop. This thin-film-coated glass plate was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 220 ° C. for 30 minutes to manufacture a filter. The film thickness of the manufactured filter was 2.0 micrometers.

Experimental example 1. Pattern bevel taper )form

The morphology of the inclined surface after the heating step at 220 ° C. in the above-mentioned manufacturing example was measured with a scanning electron microscope (SEM), and the results were judged according to FIG. 4, and the results are shown in Table 2 below.

Experimental example 2. Evaluation of pattern line width (sensitivity)

The line width of the pattern formed in the above-mentioned Production Example was measured using a scanning electron microscope (SEM). When the line width of the measured pattern was at least equal to the line width (100 micrometers) of the photomask, it was evaluated that the line width was enlarged due to the increased sensitivity of the colored photosensitive resin composition. At this time, the measured line width (micrometer) is described in Table 2 below.

[Table 2]

With reference to Table 2 above, it was confirmed that the filters manufactured using the colored photosensitive resin compositions of Examples 1 to 4 satisfying all the conditions of the present invention and Comparative Examples 1 to 4 that did not satisfy at least any one of the conditions of the present invention. In comparison, it has excellent sensitivity and can produce a bevel form of a pattern in the form of a bevel.

Specifically, although the colored photosensitive resin compositions of Comparative Examples 1 and 3 not using the photopolymerization initiator disclosed in the present invention can form a positive slope, since the line width of 100 μm or less was measured, it was confirmed that The sensitivity is not good; the colored photosensitive resin compositions of Comparative Examples 2 and 4 that do not use the alkali-soluble resin disclosed in the present invention have a line width of 100 micrometers or more and have sufficient sensitivity, but the presence of problem.

10‧‧‧ substrate

11‧‧‧ Color Layer

11R‧‧‧Coloring pattern

20‧‧‧Mask

30‧‧‧light

1 to 3 are diagrams showing a manufacturing process of the filter.

Fig. 4 is a diagram showing the pattern of the slope of the pattern.

Claims (12)

A colored photosensitive resin composition, characterized in that: Contains non-reactive alkali-soluble resin and photopolymerization initiator (A), The photopolymerization initiator (A) includes a photopolymerization initiator (a1) having two oxime groups in one molecule. The colored photosensitive resin composition according to claim 1, wherein the non-reactive alkali-soluble resin has a glass transition temperature Tg of 0 ° C or lower. The coloring photosensitive resin composition according to claim 1, wherein the non-reactive alkali-soluble resin does not contain an epoxy group or an unsaturated double bond in its molecule. The coloring photosensitive resin composition according to claim 2, wherein the non-reactive alkali-soluble resin contains 10 to 50% by weight of a repeating unit derived from a compound, wherein a glass transition temperature of a homopolymer of the compound is 0 Below ℃. The coloring photosensitive resin composition according to claim 4, wherein the compound is selected from the group consisting of ethyl acrylate, n-butyl acrylate, 2-ethylhexyl (meth) acrylate, n-hexyl acrylate, and (methyl ) More than one of the group consisting of lauryl acrylate. The coloring photosensitive resin composition according to claim 1, wherein the non-reactive alkali-soluble resin has a weight average molecular weight of 3,000 to 12,000. The colored photosensitive resin composition according to claim 1, wherein the content of the non-reactive alkali-soluble resin is 100 parts by weight based on 100 parts by weight of solids in the colored photosensitive resin composition containing the non-reactive alkali-soluble resin. 10 to 80 parts by weight. The coloring photosensitive resin composition according to claim 1, wherein the molecular weight of the photopolymerization initiator a1 is 400 to 750. The colored photosensitive resin composition according to claim 1, wherein the colored photosensitive resin composition further comprises a photopolymerization initiator a2 selected from a coloring agent, a photopolymerizable compound, and the photopolymerization initiator a1. , Solvents, and additives. The coloring photosensitive resin composition according to claim 1, wherein the non-reactive alkali-soluble resin has an acid value of 20 to 200 mg KOH / g. An optical filter comprising the coloring photosensitive resin composition according to any one of claims 1 to 10. An image display device includes the filter according to claim 11.