KR20140141338A - Photosensitive resin composition for color filter and color filter using the same - Google Patents

Abstract

(B) an acrylic binder resin; (C) a photopolymerization initiator; (D) a photopolymerizable monomer; (E) a colorant comprising a pigment; and (F) And a color filter using the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a photosensitive resin composition for a color filter, and a color filter using the same. BACKGROUND ART [0002]

The present invention relates to a photosensitive resin composition for a color filter and a color filter using the same.

Liquid crystal display devices, which are one of the display devices, have advantages such as lightness, thinness, low cost, low power consumption driving, and bonding with excellent integrated circuits, and their use range is expanding for notebook computers, monitors and TV images. Such a liquid crystal display device includes a lower substrate on which a black matrix, a color filter, and ITO pixel electrodes are formed, an active circuit composed of a liquid crystal layer, a thin film transistor, and a capacitor layer, and an upper substrate on which ITO pixel electrodes are formed .

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

In the pigment dispersion method, which is one of the methods of implementing a color filter, a photopolymerizable composition containing a colorant is coated on a transparent substrate provided with a black matrix, a pattern of a pattern to be formed is exposed, And repeating a series of processes for thermosetting to form a colored thin film. The pigment dispersion method is actively applied to manufacturing LCDs for mobile phones, notebooks, monitors, TVs and the like.

In recent years, however, a photosensitive resin composition for a color filter using a pigment dispersion method is required to have not only superior pattern characteristics but also further improved performance. In particular, a high color reproduction ratio and a high luminance characteristic are required.

An embodiment of the present invention is to provide a photosensitive resin composition for a color filter having a high luminance and a high color reproducibility.

Another embodiment of the present invention is to provide a color filter manufactured using the photosensitive resin composition for a color filter.

One embodiment of the present invention is a fluorescent lamp comprising: (A) a fluorescent substance emitting light at a wavelength of 550 to 660 nm; (B) an acrylic binder resin; (C) a photopolymerization initiator; (D) a photopolymerizable monomer; (E) a colorant comprising a pigment; And (F) a solvent.

The fluorescent material may emit light having a wavelength of 570 to 640 nm.

The fluorescent material may be contained in an amount of 0.1 to 10% by weight, for example, 0.5 to 5% by weight based on the total amount of the photosensitive resin composition for a color filter.

The fluorescent material may include a rhodamine-based, azene-based, azo-based, cyanine-based derivative, or a combination thereof.

The pigment may comprise a red pigment, a yellow pigment or a combination thereof.

Wherein the photosensitive resin composition for a color filter comprises 0.1 to 10% by weight of the fluorescent substance (A); 0.05 to 20% by weight of the acrylic binder resin (B); 0.1 to 20% by weight of the photopolymerization initiator (C); 0.5 to 20% by weight of the (D) photopolymerizable monomer; 0.01 to 50% by weight of (E) the coloring agent; And (F) the solvent balance.

Another embodiment of the present invention provides a color filter manufactured using the photosensitive resin composition for a color filter.

Other details of the embodiments of the present invention are included in the following detailed description.

A color filter having a high luminance and a high color reproduction ratio can be realized.

Hereinafter, embodiments of the present invention will be described in detail. However, it should be understood that the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

Unless otherwise specified herein, "substituted" means that at least one hydrogen atom in the compound is replaced by a halogen atom (F, Cl, Br, I), a hydroxy group, a C1- A thio group, an ester group, an ether group, a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid or a salt thereof, an imino group, an azido group, an amidino group, a hydrazino group, a hydrazino group, a carbonyl group, a carbamoyl group, A C 1 to C 20 alkyl group, a C 2 to C 20 alkenyl group, a C 2 to C 20 alkynyl group, a C 6 to C 30 aryl group, a C 3 to C 20 cycloalkyl group, a C 3 to C 20 cycloalkenyl group, Substituted with a substituent of a C2 to C20 heterocycloalkyl group, a C2 to C20 heterocycloalkenyl group, a C2 to C20 heterocycloalkynyl group, or a combination thereof.

Unless otherwise specified in the present specification, the term "amine derivative group" means an amine derivative group in NH ₂ present in an amine in which at least one hydrogen atom is replaced by a halogen atom, a hydroxy group, a carboxyl group, an ether group, a sulfonate group, a sulfonic acid group, Or an unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, or a substituted or unsubstituted C6 to C30 aryl group.

As used herein, unless otherwise specified, "(meth) acrylate" means that both "acrylate" and "methacrylate" are possible.

The photosensitive resin composition for a color filter according to an embodiment includes (A) a fluorescent substance, (B) an acrylic binder resin, (C) a photopolymerization initiator, (D) a photopolymerizable monomer, (E) a colorant, and .

(A) Fluorescent material

The fluorescent material according to an exemplary embodiment may use a material that absorbs light in the blue, green, and ultraviolet regions to emit light in the red region to emit red fluorescence.

Specifically, the fluorescent material may be a material that emits light having a wavelength of 550 to 660 nm, specifically, a material that emits light having a wavelength of 570 to 640 nm. When a fluorescent material that emits light in the wavelength range is used, a color filter having red fluorescence characteristics can be realized, and a color filter having high luminance and high color reproducibility can be obtained.

By using the fluorescent material, the energy of the backlight in the blue, green, and ultraviolet regions that are lost while passing through the red color filter can be converted into the red region, and the obtained color filter can have the red fluorescence characteristic.

Examples of the fluorescent substance include rhodamine-based, azan-based, azo-based, and cyanine-based derivatives, or a combination thereof.

The fluorescent material may be used in an amount sufficient to assist the coloring agent described later. For example, the fluorescent material may be contained in an amount of 0.1 to 10% by weight, for example, 0.1 to 5% by weight, and more specifically 0.1 to 3% by weight based on the total amount of the photosensitive resin composition for a color filter , More specifically from 0.1 to 2% by weight. When the fluorescent material is included in the above content range, the luminance and color reproduction rate of the color filter may be higher.

(B) Acrylic binder resin

The acrylic binder resin may contain a first ethylenic unsaturated monomer 　 And a second ethylenically unsaturated monomer copolymerizable therewith, and is a resin comprising at least one acrylic repeating unit.

The first ethylenically unsaturated monomer is an ethylenically unsaturated monomer containing at least one carboxyl group, and specific examples thereof include acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid, or a combination thereof.

The first ethylenically unsaturated monomer may be included in an amount of 5 to 50% by weight based on the total amount of the acrylic binder resin, specifically 10 to 40% by weight.

The second ethylenically unsaturated monomer may be an aromatic vinyl compound such as styrene,? -Methylstyrene, vinyltoluene, or vinylbenzyl methyl ether; (Meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, benzyl (meth) acrylate, Unsaturated carboxylic acid ester compounds such as cyclohexyl (meth) acrylate and phenyl (meth) acrylate; Unsaturated carboxylic acid aminoalkyl ester compounds such as 2-aminoethyl (meth) acrylate and 2-dimethylaminoethyl (meth) acrylate; Carboxylic acid vinyl ester compounds such as vinyl acetate and vinyl benzoate; Unsaturated carboxylic acid glycidyl ester compounds such as glycidyl (meth) acrylate; A vinyl cyanide compound such as (meth) acrylonitrile; (Meth) acrylamide, and the like. These may be used singly or in combination of two or more thereof.

Specific examples of the acrylic binder resin include methacrylic acid / benzyl methacrylate copolymer, methacrylic acid / benzyl methacrylate / styrene copolymer, methacrylic acid / benzyl methacrylate / 2-hydroxyethyl methacrylate copolymer Methacrylic acid / benzyl methacrylate / styrene / 2-hydroxyethyl methacrylate copolymer, but are not limited thereto, and they may be used alone or in combination of two or more.

The weight average molecular weight of the acrylic binder resin may be 3,000 to 150,000 g / mol, specifically 5,000 to 50,000 g / mol, and more specifically 20,000 to 30,000 g / mol. When the weight average molecular weight of the acrylic binder resin is in the range described above, it has good adhesion with the substrate, good physical and chemical properties, and good viscosity.

The acid value of the acrylic binder resin may be 15 to 60 mgKOH / g, and specifically 20 to 50 mgKOH / g. When the acid value of the acrylic binder resin is within the above range, excellent pixel resolution can be obtained.

The acrylic binder resin may be included in an amount of 0.05 to 20% by weight based on the total amount of the photosensitive resin composition for a color filter, and specifically 1 to 15% by weight. When the acrylic binder resin is contained within the above range, the color filter is excellent in developability in the production of a color filter, and the cross-linkability is improved, whereby excellent surface smoothness can be obtained.

(C) Light curing Initiator

The photopolymerization initiator is a photopolymerization initiator generally used in a photosensitive resin composition for a color filter. Examples of the photopolymerization initiator include an acetophenone compound, a benzophenone compound, a thioxanone compound, a benzoin compound, a triazine compound, , Or a combination thereof.

Examples of the acetophenone compound include 2,2'-diethoxyacetophenone, 2,2'-dibutoxyacetophenone, 2-hydroxy-2-methylpropiophenone, pt-butyltrichloroacetophenone, Dichloro-4-phenoxyacetophenone, 2-methyl-1- (4- (methylthio) phenyl) -2-morpholinopropane- 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butan-1-one can be used.

Examples of the benzophenone compound include benzophenone, benzoyl benzoic acid, benzoyl benzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4,4'-bis (dimethylamino) benzophenone, Bis (diethylamino) benzophenone, 4,4'-dimethylaminobenzophenone, 4,4'-dichlorobenzophenone, and 3,3'-dimethyl-2-methoxybenzophenone.

Examples of the thioxanthone compound include thioxanthone, 2-methylthioxanthone, isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone, 2- Orcanthon and the like can be used.

Examples of the benzoin compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, and benzyl dimethyl ketal.

Examples of the triazine type compound include 2,4,6-trichloro-s-triazine, 2-phenyl 4,6-bis (trichloromethyl) -s- triazine, 2- (3 ', 4'-dimethoxy (Trichloromethyl) -s-triazine, 2- (4'-methoxynaphthyl) -4,6-bis (trichloromethyl) (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) Bis (trichloromethyl) -s-triazine, bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphtho 1-yl) (Trichloromethyl) -s-triazine, 2- (4-methoxynaphtho 1-yl) -4,6-bis (trichloromethyl) 6-triazine, 2-4-trichloromethyl (4'-methoxystyryl) -6-triazine and the like can be used.

Examples of the oxime compounds include O-acyloxime compounds such as 2- (O-benzoyloxime) -1- [4- (phenylthio) phenyl] -1,2-octanedione, 1- 1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl] ethanone, O-ethoxycarbonyl- Can be used. Specific examples of the O-acyloxime-based compound include 1,2-octanedione, 2-dimethylamino-2- (4-methylbenzyl) -1- (4-morpholin- (4-phenylsulfanylphenyl) -butane-1,2-dione 2-oxime-O-benzoate, 1- -Oxime-O-benzoate, 1- (4-phenylsulfanylphenyl) -octane-1-one oxime-O-acetate and 1- (4-phenylsulfanylphenyl) Acetate and the like can be used.

In addition to the photopolymerization initiators of the above types, carbazole compounds, diketone compounds, sulfonium borate compounds, diazo compounds, and imidazole compounds can also be used as photopolymerization initiators.

The photopolymerization initiator may be contained in an amount of 0.1 to 20% by weight based on the total amount of the photosensitive resin composition for a color filter, and specifically 1 to 10% by weight. When the photopolymerization initiator is contained within the above range, photopolymerization occurs sufficiently during exposure in a pattern formation process for producing a color filter, which results in excellent sensitivity, good pattern straightness, excellent solubility in solvents and storage stability, The unreacted initiator does not remain and the decrease in the transmittance can be prevented.

(D) Photopolymerization  Monomer

As the photopolymerizable monomer, a polyfunctional monomer having two or more hydroxyl groups may be used. Specific examples of the photopolymerizable monomer include glycerol acrylate, dipentaerythritol hexaacrylate, ethylene glycol diacrylate, triethylene glycol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate Acrylate, pentaerythritol triacrylate, pentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol acrylate, pentaerythritol hexaacrylate, pentaerythritol triacrylate, pentaerythritol triacrylate, But are not limited to, ethylene glycol dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, propylene glycol dimethacrylate , 1,4-butanediol dimethacrylate, 1,6-hexanediol dimethacrylate Acrylate and the like.

The photopolymerizable monomer may be contained in an amount of 0.5 to 20% by weight based on the total amount of the photosensitive resin composition for a color filter, and specifically 1 to 10% by weight. When the photopolymerizable monomer is contained within the above range, the pattern characteristic is excellent such as the edge of the pattern is formed cleanly when the color filter is manufactured, and the developability to the alkaline developer is excellent.

(E) Colorant

As the colorant, a pigment may be used.

The pigment may be a red pigment, a yellow pigment or a combination thereof.

Examples of the red pigment include C.I. Pigment red 242, C.I. Pigment red 214, C.I. Pigment red 221, C.I. Pigment red 166, C.I. Pigment red 220, C.I. Pigment red 248, C.I. Pigment red 262, C.I. Pigment red 254, C.I. Pigment red 177 and the like.

The yellow pigments include C.I. Yellow pigments 139 and the like, C.I. Quinophthalone-based pigments such as yellow pigment 138 and the like, C.I. Yellow pigment 150 and the like, and they can be used singly or in combination of two or more kinds.

A dispersing agent may be used together to disperse the pigment in the photosensitive resin composition for a color filter.

The pigment may be contained in the photosensitive resin composition for a color filter in the form of a dispersion. Examples of the pigment dispersion solvent include ethylene glycol acetate, ethylcellosolve, propylene glycol methyl ether acetate, ethyl lactate, polyethylene glycol, cyclohexanone , Propylene glycol methyl ether, and the like.

Specifically, the pigment may be surface-treated beforehand with a dispersant, or a dispersant may be added together with the pigment when the photosensitive resin composition is prepared.

As the dispersing agent, a nonionic dispersing agent, an anionic dispersing agent, a cationic dispersing agent and the like can be used. Specific examples of the dispersing agent include polyalkylene glycols and esters thereof, polyoxyalkylene, polyhydric alcohol ester alkylene oxide adduct, alcohol alkylene oxide adduct, sulfonic acid ester, sulfonic acid salt, carboxylic acid ester, carboxylic acid Salts, alkylamide alkylene oxide adducts, and alkylamines. These may be used singly or in combination of two or more.

The dispersing agent may be contained in an amount of 0.01 to 15% by weight based on the total amount of the photosensitive resin composition for a color filter. When the dispersing agent is contained within the above range, the dispersibility of the photosensitive resin composition for a color filter is excellent, so that excellent stability, developability and patternability can be obtained.

The average particle diameter of the pigment may be 5 to 150 nm, and may be 10 to 70 nm. When the average particle diameter of the pigment is within the above range, the contrast ratio can be realized while having excellent heat resistance and light resistance.

The colorant may be used together with the pigment. The dye may be a triarylmethane dye, an anthraquinone dye, a benzylidene dye, a cyanine dye, a phthalocyanine dye, an azapphyrin dye, an indigo dye, a xanthene dye or a combination thereof.

The colorant may be contained in an amount of 0.01 to 50% by weight based on the total amount of the photosensitive resin composition for a color filter, specifically 10 to 45% by weight. When the colorant is included within the above range, the color reproducibility can be improved and the developability, the pattern hardening property and the adhesion can be improved.

(F) Solvent

Examples of the solvent include alcohols such as methanol and ethanol; Ethers such as dichloroethyl ether, n-butyl ether, diisobutyl ether, methylphenyl ether and tetrahydrofuran; Glycol ethers such as ethylene glycol methyl ether, ethylene glycol ethyl ether and propylene glycol methyl ether; Cellosolve acetates such as methyl cellosolve acetate, ethyl cellosolve acetate and diethyl cellosolve acetate; Carbitols such as methylethylcarbitol, diethylcarbitol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol dimethyl ether, diethylene glycol methyl ethyl ether and diethylene glycol diethyl ether; Propylene glycol alkyl ether acetates such as propylene glycol methyl ether acetate and propylene glycol propyl ether acetate; Aromatic hydrocarbons such as toluene and xylene; Ketones such as methyl ethyl ketone, cyclohexanone, 4-hydroxy-4-methyl-2-pentanone, methyl-n-propyl ketone, methyl- ; Saturated aliphatic monocarboxylic acid alkyl esters such as ethyl acetate, n-butyl acetate and isobutyl acetate; Lactic acid alkyl esters such as methyl lactate and ethyl lactate; Hydroxyacetic acid alkyl esters such as methylhydroxyacetate, ethylhydroxyacetate and butylhydroxyacetate; Alkoxyalkyl esters such as methoxy methyl acetate, methoxy ethyl acetate, methoxy butyl acetate, ethoxy methyl acetate, and ethoxy ethyl acetate; 3-hydroxypropionic acid alkyl esters such as methyl 3-hydroxypropionate and ethyl 3-hydroxypropionate; 3-alkoxypropionic acid alkyl esters such as methyl 3-methoxypropionate, ethyl 3-methoxypropionate, ethyl 3-ethoxypropionate and methyl 3-ethoxypropionate; 2-hydroxypropionic acid alkyl esters such as methyl 2-hydroxypropionate, ethyl 2-hydroxypropionate and propyl 2-hydroxypropionate; 2-alkoxypropionic acid alkyl esters such as methyl 2-methoxypropionate, ethyl 2-methoxypropionate, ethyl 2-ethoxypropionate and methyl 2-ethoxypropionate; 2-hydroxy-2-methylpropionic acid alkyl esters such as methyl 2-hydroxy-2-methylpropionate and ethyl 2-hydroxy-2-methylpropionate; 2-alkoxy-2-methylpropionic acid alkyl esters such as methyl 2-methoxy-2-methylpropionate and ethyl 2-ethoxy-2-methylpropionate; Esters such as 2-hydroxyethyl propionate, 2-hydroxy-2-methyl ethyl propionate, hydroxy ethyl acetate and methyl 2-hydroxy-3-methyl butanoate; Or ethyl pyruvate. Examples of the ketone acid esters include N-methylformamide, N, N-dimethylformamide, N-methylformanilide, N-methylacetamide, N, N-dimethylacetamide Benzyl alcohol, benzoic acid, benzoic acid, benzoic acid, benzoic acid, benzoic acid, benzoic acid, benzoic acid, benzoic acid, Ethyl benzoate, diethyl oxalate, diethyl maleate,? -Butyrolactone, ethylene carbonate, propylene carbonate, phenyl cellosolve acetate, etc. These may be used alone or in combination of two or more.

In view of the miscibility and reactivity of the solvent, glycol ethers such as ethylene glycol monoethyl ether and the like; Ethylene glycol alkyl ether acetates such as ethyl cellosolve acetate; Esters such as 2-hydroxyethyl propionate; Diethylene glycol such as diethylene glycol monomethyl ether; Propylene glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate and propylene glycol propyl ether acetate can be used.

The solvent may be included as a remainder with respect to the total amount of the photosensitive resin composition for a color filter, and specifically 20 to 90% by weight. When the solvent is contained within the above range, the photosensitive resin composition for a color filter is excellent in coating property, and excellent flatness can be maintained in a film having a thickness of 2 탆 or more.

(G) Other additives

The photosensitive resin composition for a color filter may contain at least one selected from the group consisting of malonic acid, malonic acid, and malonic acid to prevent spots and spots upon application, to improve leveling performance, 3-amino-1,2-propanediol; A silane-based coupling agent comprising a vinyl group or (meth) acryloxy group; Leveling agents; Fluorine surfactants; And at least one additive selected from a radical polymerization initiator.

The additive can be easily adjusted according to desired properties.

Examples of the silane coupling agent include trimethoxysilylbenzoic acid,? -Methacryloxypropyltrimethoxysilane, vinyltriacetoxysilane, vinyltrimethoxysilane,? -Isocyanatopropyltriethoxysilane,? -Glycidoxypropyltrimethoxysilane, and? - (3,4-epoxycyclohexyl) ethyltrimethoxysilane. These may be used singly or in combination of two or more.

The silane coupling agent may be used in an amount of 0.01 to 1 part by weight based on 100 parts by weight of the photosensitive resin composition for a color filter.

The photosensitive resin composition for a color filter may further contain an epoxy compound, if necessary, to improve physical properties such as adhesion.

As the epoxy compound, a phenol novolak epoxy resin, a tetramethyl non-phenyl epoxy resin, a bisphenol A type epoxy resin, an alicyclic epoxy resin, or a combination thereof may be used.

The epoxy compound may be used in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the photosensitive resin composition for a color filter. When used within the above range, storage stability, adhesion and the like can be improved.

The method of producing the photosensitive resin composition for a color filter is not particularly limited, but specifically, the above-mentioned fluorescent substance, acrylic binder resin, photopolymerization initiator, photopolymerizable monomer, colorant, solvent, A photosensitive resin composition can be prepared.

According to another embodiment, there is provided a color filter made from the photosensitive resin composition for a color filter.

Such a color filter can be manufactured by a conventional method. Specifically, the above-mentioned photosensitive resin composition for a color filter is coated on a glass substrate by a suitable method such as spin coating, roller coating, slit coating, . After the application, UV light, electron beam or X-ray is irradiated to form a pattern necessary for the color filter. The UV light has a wavelength range of 190 to 450 nm, specifically 200 to 400 nm. Then, when the coating layer is treated with an alkali developing solution, the unexposed portions of the coating layer are dissolved and a pattern necessary for the image color filter is formed. By repeating this process according to the required number of R, G, and B colors, a color filter having a desired pattern can be obtained. Further, in the above process, the image pattern obtained by development may be further heated or cured by actinic ray irradiation or the like to further improve crack resistance, solvent resistance, and the like.

Hereinafter, preferred embodiments of the present invention will be described. However, the following examples are only a preferred embodiment of the present invention, and the present invention is not limited by the following examples.

(Preparation of Photosensitive Resin Composition for Color Filter)

The specifications of the components used in the production of the photosensitive resin composition for a color filter are as follows.

(A) Fluorescent material

As shown in the following Reaction Schemes 1 and 2, two triflate salts of rhodamine B were synthesized and used.

(A-1) Production of phosphor A

(Scheme 1)

(A-2) Production of phosphor B

(Scheme 2)

(B) Acrylic binder resin

Methacrylic acid / benzyl methacrylate copolymer having a weight average molecular weight of 28,000 g / mol (mixing weight ratio 30/70) was used.

(C) Light curing Initiator

As the oxime compound, Irgacure OXE01 (CGI 124) of Ciba-Giegy Co. was used.

(D) Photopolymerization  Monomer

Dipentaerythritol hexaacrylate was used.

(E) Colorant

(E-1) C.I. Pigment Red 254 Dispersion (TOYO COLOR CO.)

(E-2) CI Pigment Red 177 dispersion (TOYO COLOR CO.)

(F) Solvent

Propylene glycol monomethyl ether acetate was used.

(G) Additive

As the fluorine surfactant, F-554 manufactured by DIC was used.

Example  One, Example  2, and Comparative Example  One

Each component was mixed with the composition shown in Table 1 below to prepare a photosensitive resin composition for a color filter. Specifically, the photopolymerization initiator was dissolved in the solvent, followed by stirring at room temperature for 2 hours. Then, the acrylic binder resin and the photopolymerizable monomer were added and stirred for 2 hours at room temperature. Then, the colorant and the fluorescent substance were added, and the mixture was further stirred at room temperature for 2 hours. The additive was then added and stirred for 1 hour at room temperature. The solution was filtered twice to remove impurities to prepare a photosensitive resin composition for a color filter.

(weight%) Example Comparative Example
One One 2 (A) Fluorescent material (A-1) 1.5 - - (A-2) - 1.5 - (B) Acrylic binder resin 2 2 2 (C) a photopolymerization initiator One One One (D) a photopolymerizable monomer 7 7 7 (E) Colorant (E-1) 17 17 17.5 (E-2) 17 17 17.5 (F) Solvent 54.48 54.48 54.98 (G) Additive 0.02 0.02 0.02

Evaluation 1: Measurement of luminance of photosensitive resin composition for color filter

The photosensitive resin composition for color filters prepared in Example 1, Example 2, and Comparative Example 1 was coated on a glass substrate having a thickness of 0.65 mm and cleaned to a thickness of 2 to 4.5 占 퐉, Min to obtain a coating film. Subsequently, the coated film was exposed using a high-pressure mercury lamp having a wavelength of 365 nm and dried in a hot-air circulation type drying oven at 160 캜 for 20 minutes to obtain a coated film.

The color coordinates (x and y) and luminance (Y) were measured using a coating film obtained above using a colorimeter (Otsuka, MCPD 3000). For comparison, reference coordinates were set to x = 0.660, The color results are shown in Table 2 below.

Color coordinates Luminance x y Y Example 1 0.660 0.333 18.54 Example 2 0.660 0.325 18.26 Comparative Example 1 0.660 0.330 18.00

It can be seen from Table 2 that according to one embodiment, the first and second embodiments using the fluorescent material emitting light having a wavelength of 550 to 660 nm have higher luminance than the first comparative example.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. As will be understood by those skilled in the art. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (7)

(A) a fluorescent substance that emits light having a wavelength of 550 to 660 nm;
(B) an acrylic binder resin;
(C) a photopolymerization initiator;
(D) a photopolymerizable monomer;
(E) a colorant comprising a pigment; And
(F) Solvent
Wherein the photosensitive resin composition is a photosensitive resin composition for a color filter.
The method according to claim 1,
Wherein the fluorescent material emits light having a wavelength of 570 to 640 nm.
The method according to claim 1,
Wherein the fluorescent material is contained in an amount of 0.1 to 10% by weight based on the total amount of the photosensitive resin composition for a color filter.
The method according to claim 1,
Wherein the fluorescent material comprises rhodamine B, a derivative thereof, or a combination thereof.
The method according to claim 1,
Wherein the pigment comprises a red pigment, a yellow pigment, or a combination thereof.
The method according to claim 1,
The photosensitive resin composition for a color filter
0.1 to 10% by weight of the fluorescent substance (A);
0.05 to 20% by weight of the acrylic binder resin (B);
0.1 to 20% by weight of the photopolymerization initiator (C);
0.5 to 20% by weight of the (D) photopolymerizable monomer;
0.01 to 50% by weight of (E) the coloring agent; And
The amount of the solvent (F)
Wherein the photosensitive resin composition is a photosensitive resin composition for a color filter.
A color filter produced by using the photosensitive resin composition for a color filter according to any one of claims 1 to 6.