KR20150010071A - A colored photosensitive resin composition, color filter and display device comprising the same - Google Patents

Abstract

The present invention aims to provide a colored photosensitive resin composition which provides high brightness while including a very low content of a coloring agent. The present invention relates to the colored photosensitive resin composition that is combined with a blue back light unit (BLU) to be used. The colored photosensitive resin composition includes (A) the coloring agent, (B) an alkali soluble resin, (C) a photopolymerizable compound, (D) a photopolymerization initiator, and (E) a solvent. The content of (A) the coloring agent is 0.5-25 wt% with respect to the total weight of solids in the colored photosensitive resin composition.

Description

TECHNICAL FIELD [0001] The present invention relates to a colored photosensitive resin composition, a color filter and a display device comprising the same,

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

A color filter may be embedded in a color imaging device of an image sensor such as a complementary metal oxide semiconductor (CMOS), a charge coupled device (CCD), etc., and may be used to actually obtain a color image . In addition, the color filter is widely used for a photographing element, a plasma display panel (PDP), a liquid crystal display (LCD), a field emission display (FEL), a light emitting display (LED) and the like. Particularly, in recent years, the use of LCDs has been further expanded, and accordingly, color filters have been recognized as one of the most important components in reproducing color tones of LCDs.

A color filter used for a color liquid crystal display device, an image pickup device, and the like is a device in which a colored photosensitive resin composition containing a coloring material corresponding to each color of red, green and blue is formed on a substrate in which a black matrix is formed in a pattern, (Hereinafter also referred to as "preliminary firing") to form a coating film. The formed coating film is exposed and developed, and if necessary, further heat curing (hereinafter referred to as "post-firing" Is repeated for each color to form pixels of each color. Here, the coloring matrix formed in a pattern shape is usually formed of a black photosensitive resin composition.

In general, for the purpose of the color gamut, a color filter is used in a white back light unit (BLU) to represent red, green, and blue colors, and the area of these points is called a color reproduction area. In a conventional display, a display is configured by a combination of a white BLU and a color filter having a red, green, and blue color as described above. The white BLU includes a conventionally known CCFL (Cold Cathode Fluorescent Lamp) Emitting diodes (OLEDs), or organic light-emitting diodes (OLEDs).

In recent years, the display has been rapidly increased in size at a high speed and a high contrast ratio is continuously required. Accordingly, a method of using a dye instead of the pigment dispersion method, which was conventionally used as a method of coloring a photosensitive resin composition, or using a dye and a pigment simultaneously . However, a colored photosensitive resin composition for a color filter using a dye and a colored photosensitive resin composition for a hybrid type color filter using both a dye and a pigment simultaneously can provide a color filter excellent in transmittance. However, The sensitivity may be lowered depending on the kind of the ink. Therefore, studies have been actively made to solve the above problems and to prevent the sensitivity of the color filter from deteriorating.

An object of the present invention is to provide a colored photosensitive resin composition which is used in combination with a blue backlight unit (BLU) and exhibits a high luminance while containing an extremely low content of a colorant.

Another object of the present invention is to provide a color filter including a blue pattern formed of the colored photosensitive resin composition, and a display device including the color filter and the blue backlight unit (BLU).

In order to achieve the above object,

(A) a colorant, (B) an alkali-soluble resin, (C) a photopolymerizable compound, (D) a photopolymerization initiator, and (E) a solvent, which are used in combination with a blue backlight unit (BLU) Wherein the content of the coloring agent is 0.5 to 25% by weight based on the total weight of the solid content in the colored photosensitive resin composition.

The present invention also provides a color filter comprising a color pattern made of the colored photosensitive resin composition.

Further, the present invention provides a display device including the color filter and the blue backlight unit (BLU).

Since the colored photosensitive resin composition of the present invention is used in combination with a blue backlight unit (BLU), it exhibits a high luminance value despite the content of a low coloring agent. In addition, a display device including a color filter and a blue backlight unit (BLU) manufactured using the colored photosensitive resin composition can provide a high quality display device having high energy efficiency and low power consumption.

1 is a graph showing the wavelength of a blue backlight unit (BLU) measured.
2 is a graph showing the wavelength of a white backlight unit (BLU) measured.

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

(B) an alkali-soluble resin, (C) a photopolymerizable compound, (D) a photopolymerization initiator, and (E) a solvent (B). The colored photosensitive resin composition of the present invention is used in combination with a blue backlight unit , And the content of the colorant (A) is 0.5 to 25% by weight, preferably 1 to 20% by weight, more preferably 2 to 15% by weight based on the total weight of the solid content of the colored photosensitive resin composition do.

Since the pattern of the colored photosensitive resin composition has a luminance of 50 or more and the wavelength of 580 nm or less is 90% or more due to the blue backlight unit (BLU), the blue light is mainly in the blue color. Thus, It can serve as a control role.

(A) Colorant

As the colorant, organic pigments, inorganic pigments and dyes which are generally used in the art can be used.

( a1 ) Pigment

The pigment (a1) includes an organic pigment and an inorganic pigment.

As the organic pigment, various pigments used in printing ink, inkjet ink and the like can be used. Specifically, phthalocyanine (water-soluble azo pigment, insoluble azo pigment), phthalocyanine pigment, quinacridone pigment, Anthanthrone pigments, anthanthrone pigments, anthanthrone pigments, anthraquinone pigments, anthanthrone pigments, anthanthrone pigments, anthanthrone pigments, indanthrone pigments, Pravantron pigments, pyranthrone pigments or diketopyrrolopyrrole pigments, and the like.

Examples of the inorganic pigments include metallic compounds such as metal oxides and metal complex salts. Specific examples of the inorganic pigments include metals such as iron, cobalt, aluminum, cadmium, lead, copper, titanium, magnesium, chromium, zinc, antimony or carbon black Oxides or composite metal oxides.

Particularly, the organic pigments and inorganic pigments may be specifically classified into pigments in the Society of Dyers and Colourists, and more specifically, those having a color index (CI) number Pigments, but are not limited thereto.

As the pigment used in the pigment dispersion composition according to the present invention, organic pigments or inorganic pigments commonly used in the art can be used, and these pigments can be used singly or in combination of two or more kinds.

The pigment may be subjected to a surface treatment using a pigment treatment, a pigment derivative into which an acidic group or a basic group has been introduced, a graft treatment on the surface of a pigment with a polymer compound, an atomization treatment using a sulfuric acid atomization method or the like, A cleaning treatment with an organic solvent or water, a treatment for removing ionic impurities by an ion exchange method, or the like.

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

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

C.I. Pigment Red 9, 97, 105, 122, 123, 144, 149, 166, 168, 176, 177, 180, 192, 215, 216, 224, 242, 254, 255 and 264;

C.I. Pigment Violet 14, 19, 23, 29, 32, 33, 36, 37 and 38;

C.I. Pigment Blue 15 (15: 3, 15: 4, 15: 6, etc.), 21, 28, 60, 64 and 76;

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

C.I. Pigment Brown 28;

C.I. Pigment Black 1 and 7, and the like.

The exemplified C.I. Among the pigment pigments, C.I. Pigment Yellow 138, 139, 150, and 185, C.I. Pigment Orange 38, C.I. Pigment Violet 23, C.I. Pigment Blue 15: 6, C.I. Pigment selected from Pigment Green 7, 36 and 58 may preferably be used.

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

In the colored photosensitive resin composition of the present invention, the (a1) pigment may be contained in the form of a pigment dispersion composition.

The pigment dispersion composition includes (a1) a pigment, (a2) a dispersant, (a3) a dispersion aid, and (a4) a dispersing solvent, and (a5) dispersing resin may be added to facilitate storage stability and dispersion.

The pigment (a1) may be contained in the pigment dispersion composition in an amount of 20 to 90% by weight, preferably 30 to 70% by weight based on the total weight of the solid content. If the content of the pigment is not within the above range, the viscosity is high, the storage stability is bad, and the dispersion efficiency is low, which adversely affects the contrast ratio.

( a2 ) Dispersant

The dispersing agent is added for maintaining deagglomeration and stability of the pigment, and any of those generally used in the art can be used without limitation. The dispersant preferably includes an acrylate-based dispersant (hereinafter referred to as an acrylate-based dispersant) comprising butyl methacrylate (BMA) or N, N-dimethylaminoethyl methacrylate (DMAEMA). Examples of commercially available acrylate dispersants include DISPER BYK-2000, DISPER BYK-2001, DISPER BYK-2070 and DISPER BYK-2150. The acrylate dispersants may be used alone or in combination of two or more. .

As the dispersant according to the present invention, other resin type pigment dispersants other than the above acrylate dispersant may be used. Examples of the other resin type pigment dispersants include known resin type pigment dispersants, in particular, polycarboxylic acid esters such as polyurethane, polyacrylate, unsaturated polyamides, polycarboxylic acids, amine salts of polycarboxylic acids, An ammonium salt of a polycarboxylic acid, an alkylamine salt of a polycarboxylic acid, a polysiloxane, a long chain polyaminoamide phosphate salt, an ester of a polycarboxylic acid substituted with a hydroxyl group, a modified product thereof, a free carboxyl group (Meth) acrylic acid-styrene copolymers, (meth) acrylic acid- (meth) acrylate ester copolymers, styrene-maleic acid copolymers, Water-soluble resins or water-soluble polymer compounds such as polymers, polyvinyl alcohol, and polyvinylpyrrolidone; Polyester; Modified polyacrylates; Adducts of ethylene oxide / propylene oxide, and phosphate esters.

DISPER BYK-161, DISPER BYK-162, DISPER BYK-163, DISPER BYK-160, BYK (trade name) manufactured by BYK Corporation are used as a commercially available pigment dispersant of the resin type. -164, DISPER BYK-166, DISPER BYK-171, DISPER BYK-182, DISPER BYK-184; EFKA-4060, EFKA-4060, EFKA-4055, EFKA-4055, EFKA-4020, EFKA-4055, EFKA-4060, EFKA- 4330, EFKA-4400, EFKA-4406, EFKA-4510, EFKA-4800; SOLSPERS-24000, SOLSPERS-32550, NBZ-4204/10 from Lubirzol; Hinoact T-6000, Hinoact T-7000, Hinoact T-8000; available from Kawaken Fine Chemicals; AJISPUR PB-821, Ajisper PB-822, Ajisper PB-823 manufactured by Ajinomoto; FLORENE DOPA-17HF, fluorene DOPA-15BHF, fluorene DOPA-33, and fluorene DOPA-44 are trademarks of Kyoeisha Chemical Co.,

The dispersant is contained in an amount of 5 to 60 parts by weight, more preferably 15 to 50 parts by weight, based on 100 parts by weight of the pigment in the colorant. When the amount of the dispersing agent is more than 60 parts by weight, the viscosity may be increased. When the amount is less than 5 parts by weight, it may be difficult to atomize the pigment and gelation after dispersion.

In addition to the above-mentioned dispersing agents, surfactants such as cationic, anionic, nonionic, amphoteric, polyester, and polyamine surfactants and the like may be used as a dispersant, and these may be used alone or in combination of two or more.

Specific examples of the surfactant include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyethylene glycol diesters, sorbitan fatty acid esters, fatty acid-modified polyesters, tertiary amine-modified polyurethanes, polyethyleneimine (Manufactured by Shin-Etsu Chemical Co., Ltd.), POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.), EFTOP (manufactured by TOKEM PRODUCTS CO., LTD.), Megafac (Manufactured by Asahi Glass Co., Ltd.), SOLSPERSE (manufactured by Asahi Glass Co., Ltd.), Mitsubishi Kasei MEGAFAC (manufactured by Dainippon Ink and Chemicals, Inc.), Flourad (manufactured by Sumitomo 3M Limited), Asahi guard, Surflon EFKA (manufactured by EFKA Chemical), PB 821 (manufactured by Ajinomoto Co., Ltd.), and the like.

( a3 ) Dispersing agent

Dispersion auxiliaries are those agents that disperse pigments into fine particles to prevent re-aggregation. The dispersion aid is effective for constituting a color filter having a high contrast ratio and an excellent transmittance.

The dispersion auxiliary according to the present invention has a structure represented by the following general formula (1).

[Chemical Formula 1]

Each of R ₁ to R ₄ is independently hydrogen, -OH or -NH-R ₉ ,

Each of R ₅ to R ₈ is independently hydrogen, halogen or SO ₃ ^-

R ₉ is hydrogen, a linear or non-linear alkyl having 1 to 8 carbon atoms, and a substituent represented by the following formula (2)

(2)

R ₁₀ to R ₁₄ are each independently hydrogen, linear or non-linear alkyl having 1 to 4 carbon atoms, SO ₃ ^- or a substituent represented by the formula (3)

(3)

R ₁₅ is a hydrogen atom, COR ₁₆ , a linear or non-linear alkyl having 1 to 8 carbon atoms, a saturated or unsaturated ring structure,

R ₁₆ is a hydrogen atom or alkyl having 1 to 8 carbon atoms.

Specific examples thereof include 1,8-diamino-4,5-dihydroxyanthraquinone, 1,5-bis {[2- (diethylamino) ethyl] amino} anthra-9,10- Bis {[2- (4-hydroxyphenyl) ethyl] amino} anthra-9,10-quinone, 1,4-bis { ) Ethyl] amino} -5,8-dihydroxyanthra-9,10-quinone, 1,8-dihydroxy-4- [4- (2- hydroxyethyl) anilino] Dihydroxy anthraquinone, 1,4-bis (4-butyl anilino) -5,8-dihydroxyanthraquinone, 4 '- (4-hydroxy- Anthraquinonylamino) -acetanilide, 1,4-bis [(2,6-diethyl-4-methylphenyl) amino] anthraquinone, 1,4-bis (butylamino) -9,10- Ion, 1,4-bis (4-butylanilino) -5,8-dihydroxyanthraquinone, 1,5-bis [(3- methylphenyl) amino] -9,10- - < / RTI > dicyclohexylaminot Quinone, 1,4-bis (isopropylamino) anthraquinone, 1,4-bis (methylamino) anthraquinone, 1,4-bis (2,6- , 2 '- (9,10-dioxoanthracene-l, 4-diyl diimino) bis (5-methylsulfonate), 1-anilino- (4-methylphenyl) amino] -9,10-anthracenedione, 1,4-bis (para- tolylamino) anthraquinone, Amino-phenyl] acetamide, 1- (methylamino) -4- (4-methylanilino) anthracene-9,10-dione and 1,4,5,8 -Tetrahydroxyanthraquinone, and the like.

In addition to the above-mentioned dispersion aid, if necessary, a commercially available dispersion aid may be further included. Specific examples thereof include SOLSPERSE-5000, SOLSPERSE-12000 and SOLSPERSE-22000 from Lubrizol, BYK-SYNERGIST 2100, BYK-SINERGIST 2105 from BYK, EFKA-6745 and EFKA-6750 from BASF.

The dispersion aid contains 1 to 30 parts by weight based on 100 parts by weight of the pigment in the colorant. If the amount exceeds 30 parts by weight of the dispersion aid, the inherent color of the colorant (A) may be altered and discoloration due to hard bake may occur during the color filter manufacturing process.

( a4 ) Dispersion solvent

The dispersion solvent is not particularly limited and various organic solvents used in the art can be used.

Specific examples thereof include ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether and ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether , Diethylene glycol dialkyl ethers such as diethylene glycol dipropyl ether and diethylene glycol dibutyl ether, ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate, propylene glycol monomethyl ether acetate , Alkylene glycol alkyl ether acetates such as propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, methoxybutyl acetate and methoxypentyl acetate, aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene, Ketone, acetic acid , Ketones such as methyl amyl ketone, methyl isobutyl ketone and cyclohexanone, alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin, ethyl 3-ethoxypropionate, Esters such as methyl propionate; and cyclic esters such as? -Butyrolactone. Preferred are alkylene glycol alkyl ether acetates, ketones, esters such as ethyl 3-ethoxypropionate and methyl 3-methoxypropionate, more preferably propylene glycol monomethyl ether acetate, propylene glycol mono Ethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate or methyl 3-methoxypropionate.

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

The dispersion solvent is contained in an amount of 60 to 90% by weight, preferably 70 to 85% by weight based on the total weight of the pigment dispersion composition. Outside of the above range, there may occur a disadvantage that the storage stability of the pigment dispersion composition becomes poor.

( a5 ) Dispersion resin

The dispersing resin may be selectively added to the dispersing agent (A) as a dispersing agent for the coloring agent. When the dispersing agent (a5) is used in combination with the dispersing agent (a2) alone, it is possible to produce a more excellent pigment dispersing composition. In the case of a dispersion resin, it is possible to use the dispersion resin as long as it can function as a dispersion medium. However, in consideration of the developability of the colored photosensitive resin composition prepared from the pigment dispersion composition, it is preferable to have an acid value in order to have solubility in an alkali developer.

Here, the acid value is a value measured as the amount (mg) of potassium hydroxide necessary for neutralizing 1 g of the acrylic polymer, and can be generally determined by titration using an aqueous solution of potassium hydroxide.

(B1) having a carboxyl group and an unsaturated bond and a compound (b2) having an unsaturated bond capable of copolymerization with the compound (b1) in the case of a dispersion resin having an acid value.

Specific examples of the compound (b1) having a carboxylic acid group and an unsaturated bond include monocarboxylic acids such as acrylic acid, methacrylic acid and crotonic acid; Dicarboxylic acids such as fumaric acid, mesaconic acid and itaconic acid; And an anhydride of the dicarboxylic acid; (meth) acrylates of a polymer having a carboxyl group and a hydroxyl group at both terminals such as? -carboxypolycaprolactone mono (meth) acrylate, and acrylic acid and methacrylic acid are preferable.

The compounds exemplified as the compound (b1) may be used alone or in combination of two or more. The compound (b2) having an unsaturated bond capable of copolymerizing with the compound (b1) may be, for example, styrene, vinyltoluene,? -Methylstyrene, p-chlorostyrene, o-methoxystyrene, m- -Methoxy styrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m- Aromatic vinyl compounds such as diesters; Propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, alkyl (meth) acrylates such as sec-butyl (meth) acrylate or t-butyl (meth) acrylate; (Meth) acrylate, cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0 2,6] decan- Alicyclic (meth) acrylates such as dicyclopentanyloxyethyl (meth) acrylate or isobornyl (meth) acrylate; Aryl (meth) acrylates such as phenyl (meth) acrylate or benzyl (meth) acrylate; Hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate or 2-hydroxypropyl (meth) acrylate; N-cyclohexylmaleimide, N-benzylmaleimide, N-phenylmaleimide, No-hydroxyphenylmaleimide, Nm-hydroxyphenylmaleimide, Np-hydroxyphenylmaleimide, No-methylphenylmaleimide, Nm N-substituted maleimide-based compounds such as methylphenyl maleimide, Np-methylphenyl maleimide, No-methoxyphenyl maleimide, Nm-methoxyphenyl maleimide and Np-methoxyphenyl maleimide; Unsaturated amide compounds such as (meth) acrylamide and N, N-dimethyl (meth) acrylamide; 3- (methacryloyloxymethyl) -2-trifluoromethyl oxetane, 3- (methacryloyloxymethyl) oxetane, 3- (methacryloyloxymethyl) 2- (methacryloyloxymethyl) oxetane, 2- (methacryloyloxymethyl) -4-trifluoromethyloxetane and the like Unsaturated oxetane compounds, and the like.

The compounds exemplified as the compound (b2) may be used alone or in combination of two or more.

The dispersion resin is contained in an amount of 5 to 60 parts by weight, preferably 10 to 50 parts by weight, based on 100 parts by weight of the pigment solid content in the colorant. When the dispersing resin exceeds 60 parts by weight, the viscosity can be increased by the dispersing resin. When the dispersing resin is less than 5 parts by weight, the amount of the dispersing resin is insufficient, so that an atomized pigment dispersing composition can not be obtained.

( a6 )dyes

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

Examples of the dye include acid dyes having an acidic group such as a sulfonic acid and a carboxylic acid, salts of an acidic dye and a nitrogen-containing compound, sulfonamides of an acidic dye and derivatives thereof, and azo, xanthate, phthalocyanine Based acid dyes and derivatives thereof.

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

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

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

C.I. Solvent Red 8, 45, 49, 122, 125 and 130;

C.I. Solvent Orange 2, 7, 11, 15, 26 and 56;

C.I. Solvent Blue 35, 37, 59 and 67;

C.I. Green dyes such as Solvent Green 1, 3, 4, 5, 7, 28, 29, 32, 33, 34 and 35 and the like.

C.I. As an acid dye

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 and 251;

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 and 426;

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

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

C.I. Acid Violet 6B, 7, 9, 17 and 19;

Dyes such as C.I. Acid Green 1, 3, 5, 9, 16, 25, 27, 50, 58, 63, 65, 80, 104, 105, 106 and 109.

As a C.I. direct dye

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 and 141;

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 and 250;

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

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

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

Dyes such as C.I. Direct Green 25, 27, 31, 32, 34, 37, 63, 65, 66, 67, 68, 69, 72, 77, 79 and 82.

Also, C.I. As a modantoic dye

CI. Modetto Yellow 5, 8, 10, 16, 20, 26, 30, 31, 33, 42, 43, 45, 56, 61, 62 and 65;

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

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

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

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

Dyes such as C.I. Modatto Green 1, 3, 4, 5, 10, 15, 19, 26, 29, 33, 34, 35, 41, 43 and 53.

The colorant (A) may be used in combination of one or more kinds of pigments or dyes. The colored photosensitive resin composition of the present invention contains 0.5 to 25% by weight, preferably 1 to 20% by weight, more preferably 2 to 15% by weight based on the total weight of the solid content.

(B) an alkali-soluble resin

As the alkali-soluble resin, those known in this field can be used. In particular, it is preferable to include at least one compound represented by any one of the following formulas (4) to (7), and the compounds represented by the above formulas (4) to (7) are each contained in an amount of 3 to 80 mol% To 70 mol%. When at least one of the compounds represented by Chemical Formulas (4) to (7) is contained within the mole fraction range, the sensitivity and adhesion of the colored photosensitive resin composition are excellent, and the pattern is not peeled off during the development process.

[Chemical Formula 4]

[Chemical Formula 5]

[Chemical Formula 6]

(7)

The alkali-soluble resin having at least one unit selected from the group consisting of the formulas (4) to (7) may be prepared by polymerizing with a polymerizable compound.

Specific examples of unsaturated bonds that can be copolymerized with Formulas 4 to 7 of the alkali-soluble resin include styrene, vinyltoluene,? -Methylstyrene, p-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p- Styrene, o-vinylbenzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p- Aromatic vinyl compounds; Propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (meth) acrylate, alkyl (meth) acrylates such as sec-butyl (meth) acrylate and t-butyl (meth) acrylate; (Meth) acrylate, cyclopentyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-methylcyclohexyl (meth) acrylate, tricyclo [5.2.1.0 2,6] decan- Alicyclic (meth) acrylates such as dicyclopentanyloxyethyl (meth) acrylate and isobornyl (meth) acrylate; Aryl (meth) acrylates such as phenyl (meth) acrylate and benzyl (meth) acrylate; Hydroxyalkyl (meth) acrylates such as 2-hydroxyethyl (meth) acrylate and 2-hydroxypropyl (meth) acrylate; N-cyclohexylmaleimide, N-benzylmaleimide, N-phenylmaleimide, No-hydroxyphenylmaleimide, Nm-hydroxyphenylmaleimide, Np-hydroxyphenylmaleimide, No-methylphenylmaleimide, Nm N-substituted maleimide compounds such as methylphenylmaleimide, Np-methylphenylmaleimide, No-methoxyphenylmaleimide, Nm-methoxyphenylmaleimide and Np-methoxyphenylmaleimide; (meth) acrylamide, Unsaturated amide compounds such as N, N-dimethyl (meth) acrylamide; 3- (methacryloyloxymethyl) -2-trifluoromethyl oxetane, 3- (methacryloyloxymethyl) oxetane, 3- (methacryloyloxymethyl) 2- (methacryloyloxymethyl) oxetane, 2- (methacryloyloxymethyl) -4-trifluoromethyloxetane, and the like Unsaturated oxetane compounds, and the like.

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

The alkali-soluble resin of the present invention may be further mixed with a variety of other alkali-soluble resins known in the art, if necessary.

The alkali-soluble resin preferably has a weight average molecular weight in terms of polystyrene of 3,000 to 100,000 and preferably 5,000 to 50,000. If the weight average molecular weight of the alkali-soluble resin is out of the above range, the reduction of the film is not prevented at the time of development, and the pattern portion may be missed.

The acid value of the alkali-soluble resin is 50 to 150 (KOH mg / g), preferably 60 to 140 (KOH mg / g), more preferably 80 to 135 (KOH mg / g) Is 80 to 130 (KOH mg / g). When the acid value of the alkali-soluble resin is 50 to 150 (KOH mg / g), solubility in a developing solution is improved and the residual film ratio is improved.

Here, the acid value is a value measured as the amount (mg) of potassium hydroxide necessary for neutralizing 1 g of the acrylic polymer, and can be generally determined by titration using an aqueous solution of potassium hydroxide.

The alkali-soluble resin contains 10 to 80% by weight, preferably 10 to 70% by weight, based on the total solid weight of the colored photosensitive resin composition of the present invention. The solubility of the developer in the above-described range is sufficient, the pattern formation is easy, and the reduction of the film thickness of the pixel portion of the exposed portion is prevented at the time of development, and the dropout of the non-pixel portion is improved.

(C) Photopolymerization  compound

The photopolymerizable compound is not particularly limited as long as it is a compound capable of polymerizing under the action of the photopolymerization initiator (D) to be described later, but is preferably a monofunctional photopolymerizable compound, a bifunctional photopolymerizable compound or a trifunctional or more multifunctional photopolymerizable compound And the like.

Specific examples of the monofunctional monomer include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate, N- And Arylnix M-101 (Doagosei), KAYARAD TC-110S (Nippon Kayaku) or Biscoat 158 (Osaka Yuki Kagaku Kogyo) are commercially available products.

Specific examples of the bifunctional monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) (Acryloyloxyethyl) ether of bisphenol A and 3-methylpentanediol di (meth) acrylate. Commercially available products include Aronix M-210, M-1100, 1200 (Doagosei), KAYARAD HDDA (Nippon Kayaku), Viscoat 260 (Osaka Yuki Kagaku Kogyo), AH-600, AT-600 or UA-306H (Kyoeisha Chemical Co., Ltd.).

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

Of the photopolymerizable compounds exemplified above, trifunctional or higher (meth) acrylate esters and urethane (meth) acrylates are particularly preferable because they have excellent polymerizability and can improve the strength.

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

The photopolymerizable compound is contained in an amount of 5 to 50% by weight, and preferably 7 to 48% by weight based on the total solid weight of the colored photosensitive resin composition of the present invention. When the photopolymerizable compound is included in the above range, the strength and smoothness of the pixel portion are good.

(D) Light curing Initiator

The photopolymerization initiator can be used without particular limitation as long as it can polymerize the photopolymerizable compound (C).

In particular, the photopolymerization initiator is preferably selected from the group consisting of an acetophenone based compound, a benzophenone based compound, a triazine based compound, a nonimidazole based compound, an oxime compound, and a thioxanthone based compound from the viewpoints of polymerization characteristics, initiation efficiency, absorption wavelength, availability, It is preferable to use at least one compound selected from the group consisting of compounds.

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

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

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

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

Specific examples of the oxime compounds include o-ethoxycarbonyl-α-oximino-1-phenylpropan-1-one and the like. Commercially available products include OXE01 and OXE02 of BASF.

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

Further, within the range not impairing the effect of the present invention, a photopolymerization initiator other than the above-exemplified photopolymerization initiator may be further used. For example, a benzoin compound or an anthracene compound may be used, and these may be used alone or in combination of two or more.

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

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

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

The photopolymerization initiator may further include a photopolymerization initiator (D-1) to improve the sensitivity of the colored photosensitive resin composition of the present invention. The colored photosensitive resin composition according to the present invention contains the photopolymerization initiation auxiliary (D-1), thereby increasing the sensitivity and improving the productivity.

As the photopolymerization initiation auxiliary (D-1), for example, at least one compound selected from the group consisting of an amine compound, a carboxylic acid compound and an organic sulfur compound having a thiol group can be preferably used.

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

The carboxylic acid compound is preferably an aromatic heteroacetic acid, and more specifically, it is preferably an aromatic heteroaromatic acid such as phenylthioacetic acid, methylphenylthioacetic acid, ethylphenylthioacetic acid, methylethylphenylthioacetic acid, dimethylphenylthioacetic acid, methoxyphenylthioacetic acid, dimethoxyphenylthio Acetic acid, chlorophenylthioacetic acid, dichlorophenylthioacetic acid, N-phenylglycine, phenoxyacetic acid, naphthylthioacetic acid, N-naphthylglycine or naphthoxyacetic acid.

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

The photopolymerization initiator may be contained in an amount of 0.1 to 40 parts by weight, preferably 1 to 30 parts by weight, based on 100 parts by weight of the sum of the alkali-soluble resin (B) and the photopolymerizable compound (C) based on the solid content. When the coloring photosensitive resin composition is included in the above-described range, the sensitivity of the colored photosensitive resin composition becomes high, the exposure time is shortened, productivity is improved, and high resolution can be maintained. Further, the strength of the pixel portion formed using the composition of the above-described conditions and the smoothness of the surface of the pixel portion can be improved.

When the photopolymerization initiator (D-1) is further used, it is preferable to use the same content range as the photopolymerization initiator (D). When the photopolymerization initiator is used in the above range, the sensitivity of the colored photosensitive resin composition increases, The productivity of the color filter formed using the composition can be improved.

(E) Solvent

The solvent used in the conventional colored photosensitive resin composition is not particularly limited so long as it is effective in dissolving the other components contained in the colored photosensitive resin composition. The solvent may be selected from ethers, aromatic hydrocarbons, ketones, alcohols, esters And amides are preferred.

Specific examples of the solvent include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, di Propylene glycol monomethyl ether, ethylene glycol dibutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol dimethyl ether, dipropylene glycol diethyl ether, dipropylene glycol dipropyl ether, Ethers such as dipropylene glycol dibutyl ether; Aromatic hydrocarbons such as benzene, toluene, xylene, and mesitylene; Ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone, and cyclohexanone; Alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol and glycerin; Methylcellosolve acetate, ethylcellosolve acetate, ethyl acetate, butyl acetate, amyl acetate, methyl lactate, ethyl lactate, butyl lactate, 3-methoxypropionate, methyl 3-methoxypropionate, Methoxybutyl acetate, ethylene glycol monoacetate, ethylene glycol diacetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol Monoacetate, diethylene glycol diacetate, diethylene glycol monobutyl ether acetate, propylene glycol monoacetate, propylene glycol diacetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethylene carbonate, propylene carbonate, Lactone, etc. And the like.

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

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

The solvent may be contained in an amount of 60 to 90% by weight, preferably 70 to 85% by weight based on the total weight of the colored photosensitive resin composition of the present invention. In the above range, when the resin is coated with a coating apparatus such as a roll coater, a spin coater, a slit and spin coater, a slit coater (sometimes referred to as a die coater), or an inkjet,

The present invention provides a color filter made of the colored photosensitive resin composition and a display device including the color filter.

The above display device can be produced by applying the colored photosensitive resin composition on a substrate, and photo-curing and developing it to form a pattern.

First, a colored photosensitive resin composition is coated on a substrate (usually glass) or a layer composed of a solid component of a previously formed colored photosensitive resin composition, followed by heating and drying to remove volatile components such as a solvent to obtain a smooth coated film.

The coating method can be carried out by, for example, a spin coating method, a flexible coating method, a roll coating method, a slit and spin coating method, a slit coating method or the like. After application, heating and drying (prebaking), or drying under reduced pressure to evaporate the volatile components such as solvent. Here, the heating temperature is usually 70 to 200 占 폚, preferably 80 to 130 占 폚. The thickness of the coating film after heat drying is usually about 1 to 8 mu m. Ultraviolet rays are applied to the thus obtained coating film through a mask for forming a desired pattern. At this time, it is preferable to use an apparatus such as a mask aligner or a stepper so as to uniformly irradiate a parallel light beam onto the entire exposed portion and accurately align the mask and the substrate. When ultraviolet light is irradiated, the site irradiated with ultraviolet light is cured.

The ultraviolet rays may be g-line (wavelength: 436 nm), h-line, i-line (wavelength: 365 nm), or the like. The dose of ultraviolet rays can be appropriately selected according to need, and the present invention is not limited thereto. The desired pattern shape can be formed by dissolving the unexposed portion and developing the coated film after the hardening is brought into contact with the developing solution.

The developing method may be any of a liquid addition method, a dipping method, and a spraying method. Further, the substrate may be inclined at an arbitrary angle during development. The developer is usually an aqueous solution containing an alkaline compound and a surfactant. The alkaline compound may be either an inorganic or an organic alkaline compound. Specific examples of the inorganic alkaline compound include sodium hydroxide, potassium hydroxide, disodium hydrogenphosphate, sodium dihydrogenphosphate, ammonium dihydrogenphosphate, ammonium dihydrogenphosphate, potassium dihydrogenphosphate, sodium silicate, potassium silicate, sodium carbonate, potassium carbonate , Sodium hydrogencarbonate, potassium hydrogencarbonate, sodium borate, potassium borate, and ammonia. Specific examples of the organic alkaline compound include tetramethylammonium hydroxide, 2-hydroxyethyltrimethylammonium hydroxide, monomethylamine, dimethylamine, trimethylamine, monoethylamine, diethylamine, triethylamine, Monoisopropylamine, diisopropylamine, ethanolamine, and the like.

These inorganic and organic alkaline compounds may be used alone or in combination of two or more. The concentration of the alkaline compound in the alkali developer is preferably 0.01 to 10% by weight, and more preferably 0.03 to 5% by weight.

The surfactant in the alkali developer may be at least one selected from the group consisting of a nonionic surfactant, an anionic surfactant, and a cationic surfactant.

Specific examples of the nonionic surfactants include polyoxyethylene alkyl ethers, polyoxyethylene aryl ethers, polyoxyethylene alkyl aryl ethers, other polyoxyethylene derivatives, oxyethylene / oxypropylene block copolymers, sorbitan fatty acid esters, Polyoxyethylene sorbitan fatty acid esters, polyoxyethylene sorbitol fatty acid esters, glycerin fatty acid esters, polyoxyethylene fatty acid esters, and polyoxyethylene alkylamines.

Specific examples of the anionic surfactant include higher alcohol sulfuric acid ester salts such as sodium lauryl alcohol sulfate ester and sodium oleyl alcohol sulfate ester, alkylsulfates such as sodium laurylsulfate and ammonium laurylsulfate, sodium dodecylbenzenesulfonate And alkylarylsulfonic acid salts such as sodium dodecylnaphthalenesulfonate.

Specific examples of the cationic surfactant include amine salts such as stearylamine hydrochloride and lauryltrimethylammonium chloride, and quaternary ammonium salts. Each of these surfactants may be used alone or in combination of two or more.

The concentration of the surfactant in the developer is usually 0.01 to 10% by weight, preferably 0.05 to 8% by weight, more preferably 0.1 to 5% by weight. After development, it may be washed with water and, if necessary, subjected to post-baking at 150 to 230 ° C for 10 to 60 minutes.

The patterned photosensitive resin composition of the present invention can be used to form a pattern on a substrate or a color filter substrate through each of the steps described above. This pattern is useful as a photo spacer used in a display device.

Therefore, the pattern thus obtained can be effectively used in an image display apparatus such as a liquid crystal display apparatus, has excellent visible light shielding property, has high crosslinking density even at a low exposure dose, and is excellent in adhesion to a substrate, And excellent elastic recovery rate.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to examples. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments. The embodiments of the present invention are provided to enable those skilled in the art to more fully understand the present invention.

Synthetic example  1. (B) Preparation of alkali-soluble resin

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen inlet tube was prepared, and as a monomer dropping lot, 3,4-epoxytricyclodecan-8-yl (meth) acrylate and 3,4- 40 parts by weight of methyl methacrylate, 40 parts by weight of acrylic acid, 70 parts by weight of vinyltoluene, 40 parts by weight of t-butylperoxy-2- (meth) acrylate, 4 parts by weight of ethylhexanoate and 40 parts by weight of propylene glycol monomethyl ether acetate (PGMEA) were added and stirred and mixed. Six parts by weight of n-dodecanethiol and 24 parts by weight of PGMEA were added as a chain transfer agent dropping funnel, Prepared. Then, 395 parts by weight of PGMEA was introduced into the flask, the atmosphere in the flask was changed to nitrogen in air, and the temperature of the flask was raised to 90 DEG C while stirring. The monomer and the chain transfer agent were then added dropwise from the dropping funnel. The temperature was elevated by 110 DEG C for 1 hour and maintained for 5 hours, thereby obtaining an alkali-soluble resin (B) having a solid acid value of 75 mgKOH / g. The weight average molecular weight measured by GPC in terms of polystyrene was 17,000 and the molecular weight distribution (Mw / Mn) was 2.3.

The weight average molecular weight (Mw) and the number average molecular weight (Mn) of the alkali-soluble resin were measured by the GPC method under the following conditions.

Apparatus: HLC-8120GPC (manufactured by TOSOH CORPORATION)

Column: TSK-GELG4000HXL + TSK-GELG2000HXL (Serial connection)

Column temperature: 40 DEG C

Mobile phase solvent: tetrahydrofuran

Flow rate: 1.0 ml / min

Injection amount: 50 μl

Detector: RI

Measurement sample concentration: 0.6 mass% (solvent = tetrahydrofuran)

Standard materials for calibration: TSK STANDARD POLYSTYRENE F-40, F-4, F-1, A-2500, A-500 (manufactured by TOSOH CORPORATION)

The ratio of the weight average molecular weight to the number average molecular weight obtained above was defined as a molecular weight distribution (Mw / Mn).

Example  1 to 4. Preparation of colored photosensitive resin composition

A colored photosensitive resin composition was prepared according to a conventional method with the components and compositions shown in Table 1 below.

Pigment dispersion composition Colored photosensitive resin composition B15: 6 V23 Total pigment content alkali
Soluble resin Photopolymerizable compound Light curing
Initiator solvent Example 1 5 0 5 45 50 5 200 Example 2 5 5 10 45 45 5 200 Example 3 10 0 10 45 45 5 200 Example 4 10 10 20 35 40 5 200

B15: 6 (A): C.I. Pigment Blue 15: 6

V23 (A): C.I. Pigment Violet 23

Alkali-soluble resin (B): The resin of Synthesis Example 1

Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARD DPHA; manufactured by Nippon Kayaku Co., Ltd.)

Photopolymerization initiator (D): 1,2-Octanedione-1- [4- (phenylthio) phenyl] -2-0-benzoyloxime (OXE-

Photoinitiator (D-2): 2-Methyl-1- [4- (methylthiophenyl) -2-morpholinopropane-1-one (Irgacure 907 (Ciba Specialty Chemical)

Solvent (E): Propylene glycol monomethyl ether acetate

Example  5. Substrate Manufacturing

A glass substrate (Eagle 2000; Corning) having an aspect ratio of 2 inches was sequentially washed with a neutral detergent, water and alcohol, and then dried. The colored photosensitive resin compositions prepared in Examples 1 to 4 were spin-coated on the glass substrate, respectively, and then prebaked in a clean oven at 90 DEG C for 3 minutes. The prebaked substrate was cooled to room temperature and light was irradiated at an exposure dose of 60 mJ / cm 2 (based on 365 nm) using an exposure apparatus (TME-150RSK; Topcon Co., Ltd.) with an interval of 10 μm from the quartz glass photomask Respectively. The irradiation of the polymerizable resin composition at this time was carried out by using radiation from an ultra-high pressure mercury lamp. At this time, the photomask used was a photomask in which the following pattern was formed on the same plane. (Pattern) having a side of 10 mu m to 100 mu m in one side, and the spacing of the square is 100 mu m. After the light irradiation, the coating film was immersed in an aqueous developing solution containing 0.12% of a nonionic surfactant and 0.04% of potassium hydroxide at 25 캜 for 100 seconds and developed. After washing with water, post-baking was performed in an oven at 220 캜 for 20 minutes .

Experimental Example  1 to 4 and Comparative Experimental Example  1 to 4. Color and luminance measurement

Each of the substrates prepared using the colored photosensitive resin compositions of Examples 1 to 4 was combined with blue BLU or white BLU to measure color and brightness.

The color results were measured by CIE 1931, and the color and luminance results are shown in Table 2 below.

Color coordinates Luminance x y Y Experimental Example 1 Example 1 Substrate + blue BLU 0.136 0.133 15.7 Experimental Example 2 Example 2 Substrate + blue BLU 0.142 0.115 14.8 Experimental Example 3 Example 3 Substrate + blue BLU 0.132 0.125 14.2 Experimental Example 4 Example 4 Substrate + blue BLU 0.135 0.107 13.8 Comparative Experimental Example 1 Example 1 Substrate + white BLU 0.136 0.105 13.7 Comparative Experimental Example 2 Example 2 Substrate + white BLU 0.142 0.115 13.2 Comparative Experimental Example 3 Example 3 Substrate + white BLU 0.132 0.125 12.1 Comparative Experimental Example 4 Example 4 Substrate + white BLU 0.138 0.105 11.8

As shown in Table 2, in the case of a substrate combined with a blue BLU having a wavelength of 580 nm or less and having a wavelength of 90% or more, it can be confirmed that the substrate has a higher luminance in the same color coordinate as in the case of combining with a white BLU representing white light there was. Therefore, it was confirmed from the above results that the colored photosensitive resin composition of the present invention can have a high luminance when it is combined with a blue BLU having a wavelength of 580 nm or less and 90% or more.

Claims (6)

(A) a colorant, (B) an alkali-soluble resin, (C) a photopolymerizable compound, (D) a photopolymerization initiator, and (E) a solvent, which are used in combination with a blue backlight unit (BLU) Wherein the content of the coloring agent is 0.5 to 25% by weight based on the total weight of the solid content in the colored photosensitive resin composition. The photosensitive resin composition according to claim 1, wherein the colored photosensitive resin composition comprises 10 to 80% by weight of (B) an alkali-soluble resin, (C) 5 to 50% by weight of a photopolymerizable compound, (B) (C) 0.1 to 40 parts by weight of (D) a photopolymerization initiator based on 100 parts by weight of the sum of the photopolymerizable compounds;
(E) a solvent in an amount of 60 to 90% by weight based on the total weight of the colored photosensitive resin composition. The colored photosensitive resin composition according to claim 1, wherein the alkali-soluble resin (B) comprises at least one compound selected from the following formulas (4) to (7)
[Chemical Formula 4]

[Chemical Formula 5]

[Chemical Formula 6]

(7)

The colored photosensitive resin composition according to claim 1, wherein the alkali-soluble resin (B) has an acid value of 50 to 150 (KOH mg / g) and a polystyrene reduced weight average molecular weight of 3,000 to 100,000. A color filter comprising a color pattern made of the colored photosensitive resin composition of claim 1. A display device comprising the color filter and the backlight unit (BLU) according to claim 5.

Images