TW200813169A - Black composition, partition wall for color filter, and color filter - Google Patents

Abstract

To provide a black composition with which a partition wall capable of suppressing an overflow of ink is formed. A dispersed particle size of black pigment which is contained in the black composition containing a resin component and the black pigment, for forming the partition wall for an inkjet type color filter, is set to be 120 nm or less.

Description

[Technical Field] The present invention relates to a light-shielding film composition for forming a partition wall, a partition wall for an ink jet type color filter, and a partition wall condensing sheet . [Prior Art] A liquid crystal display device or the like has a structure in which a liquid crystal layer is sandwiched between two base handles of opposing and formed electrodes. Further, a color filter having pixels composed of colors of red (R), green (G), and j is formed on the inner side of the substrate. Further, in order to prevent color mixing in different colors of the pixels and to shield the electrodes, the color matrix is generally formed with a matrix of black matrixes for distinguishing pixels of B colors. Generally, color filters are formed by lithography. Specifically, a black photosensitive composition is coated on the substrate, and an exposure and development of a black matrix is performed. Then, by applying, exposing, and developing the photosensitive compositions of the respective colors of R, G, and B, a color filter is formed by forming a pattern of each color at a predetermined position. In recent years, in order to improve the productivity of color filters, a method of manufacturing a color filter by ink type has been studied. The use of an ink jet type to produce a color film is carried out by forming a partition wall by a lithography method, and discharging ink of each of R, G, and B from the ink jet nozzle to the partition wall. In the above ink jet type, the problem of bleed or color mixing is printed. The color of black is paired, color (B) color filter, light pattern, R, G, first in the formation of the duplicate case, to use the ink filter in the frame of the ink will be 5 200813169 In order to solve this problem In the partition wall forming composition, a vinyl polymer having a polyorganosiloxane chain is used (see Patent Document 1). [Problem to be Solved by the Invention] However, it is difficult to completely suppress the bleeding of the ink or the color mixing system. In particular, although the ink is ejected into the partition wall, the ink may be bleed or mixed due to the ink flowing out of the partition wall. Therefore, it is necessary to suppress the ink discharge. In view of the above problems, an object of the present invention is to provide a black composition, a partition wall for an ink jet type color filter, and a color filter including the partition wall, and the black composition can be formed to suppress ink discharge. A partition that prevents bleeding or color mixing. [Means for Solving the Problem] The present inventors have found that the ink overflow can be caused by the dispersed particle diameter of the black pigment, and the dispersed particle diameter of the black pigment of the black composition can be made smaller than the previously used black pigment. The present invention has been completed by suppressing the outflow of ink, preventing bleed or mixing walls. That is, the present invention provides a black composition which is an ink jet type black composition containing a resin and a black pigment, wherein the black pigment has a dispersed particle diameter of 120 nm or less, and is provided by the black composition. The partition wall for the ink jet type color filter formed and the color filter 6 200813169 provided with the partition wall. Further, the present invention has found that the ink discharge system is caused by the partition wall degree, and the partition wall from which the ink is discharged can be suppressed by setting the surface roughness of the partition wall to a predetermined value or less. That is, the present invention provides a partition wall which is an ink jet type partition wall having a surface roughness of 8 nm or less and a color filter. [Effects of the Invention] According to the present invention, it is possible to provide a black composition which can suppress the flow of ink from flowing out of the wall by making the dispersed particle diameter of the black pigment to be 120 nm. Further, by using the black composition, it is possible to form a partition sheet for an ink jet type color filter which is less likely to decrease in rate. Further, according to the present invention, by making the surface of the partition wall coarse or smaller, it is possible to provide a partition wall for an ink jet sheet which can suppress ink discharge. Further, by providing the partition wall, it is possible to form a color filter having less light transmittance. [Embodiment] [Black composition] The black composition of the present invention contains a resin component and a black-black composition for forming a surface roughness of the inkjet color filter spacer, and can form a color filter having the spacer. Under the black composition of the wall, a light penetrating color or a color filter having a color filter roughness of 8 nanometer color filter may be formed. The wall (hereinafter, also referred to as "200813169" for "partition wall"). This partition can achieve the function as a black matrix. [Black Pigment] The black pigment of the present invention is a material having a dispersed particle diameter of 120 nm or less. As described above, the partition wall containing the black composition of the black pigment having a dispersed particle diameter of 120 nm or less can prevent the ink discharged into the partition wall from flowing out of the partition wall. Thereby, the color filter can prevent bleeding or color mixture of the ink. Η卩 你 你 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ,· , ---' ▼ , I · *, f · * * > φ γ ^ _ * - | 一 --, small, due to capillary phenomenon, is caused by upward suction. It is considered that the surface roughness can be borrowed The black pigment has a dispersed particle diameter of 1 to 20 nm or less. The dispersed particle diameter of the black pigment is preferably 1 to 10 nm or less, more preferably 40 nm or more. When the dispersed particle diameter is 40 nm or more, the dispersibility of the black pigment can be improved, and the precipitation of the black pigment in the black composition can be suppressed. Here, the "dispersed particle diameter" in the present invention means that the particles are dispersed in a liquid. The average particle size of the particles measured in the state. Examples of such black pigments include metal oxides, composite oxides, metal sulfides, metal sulfates or metals of carbon black, titanium black, copper, iron, manganese, cobalt, chromium, nickel, zinc, #5, silver, and the like. Inorganic pigments such as carbonates. Among these black pigments, it is more preferable to use carbon black or titanium black having high light blocking properties. As the carbon black, well-known carbon black such as channel black, furnace black, hot black, and lamp black can be used. Further, in order to improve the dispersibility in the black composition, it is more preferable to coat the carbon black with 8 200813169 resin. The black composition of the present invention can also be added with a dispersing agent for dispersing a black pigment. The dispersing agent is preferably a polymer dispersing agent of a polyamidide type, a urethane resin type or an acrylic resin type. Examples of such a dispersing agent include BYK-1 61, 162, 163, 164, 166, 170, 182, manufactured by BYK Japan KK, and Solsperse S3000, manufactured by ZENECA Co., Ltd. S9000, S17000, S20000, S27000, S24000' S26000, S28000, etc. Further, the content of the black pigment is preferably as described later, and the film thickness at the time of forming the partition wall using the black composition of the present invention is adjusted so that the optical density (Optical Density) value is 4 or more. When the 0D value of the partition wall formed of the black composition is 4 or more, a sufficient display contrast can be obtained when the black matrix of the liquid crystal display is used. Specifically, the content of the black pigment is preferably from 5% by mass to 70% by mass, more preferably from 25% by mass to 55% by mass, based on the total solid content other than the solvent. [Resin component] The resin component used in the black composition of the present invention is specifically an epoxy resin, an epoxy acrylate resin, an internal olefin resin, a siloxane polymer resin, a polyimide resin, or the like. A polyimide resin such as a polyimine resin, a polyamidoxime resin or a polym-butylene imide resin is preferred. Further, in order to improve the productivity of the color calender sheet, it is preferable that the above-mentioned resin component is photosensitive by 9 200813169 and can be patterned by exposure. The resin component may be a positive photosensitive composition or a negative photosensitive composition. <<Positive type photosensitive composition>> When the resin component of the present invention is a positive photosensitive composition, an alkali-soluble resin and a sensitizer are contained. <Test Solubility Resin> The soluble resin can be exemplified by, for example, a clarified varnish resin.

The novolac resin may, for example, be a mixed aldehyde in which formaldehyde or formaldehyde and salicylaldehyde are added to phenols such as m-cresol, p-cresol, dimethyl cresol, and trimethyl phenol, in the acid catalyst. The obtained novolac resin is produced in accordance with a usual method. Among these novolac resins, in particular, those having a mass average molecular weight of from 2,000 to 50,000, preferably from 3,000 to 20,000, are practical. <Photosensitive Agent> The sensitizer may, for example, be a compound containing a benzene-containing diazide group, and the benzoquinonediazide group-containing compound may, for example, be naphthoquinone-1,2-diazepine-4 - Continued brewed halogen or Qinqin Kun-1, 2· Erfeng gas-5-Shihuang brewed halogen, with 2,3,4-trisyldiphenyl ketone, 2,3,4,4'-tetrahydroxydiphenyl Polyhydroxydiphenyl ketones such as ketones, or bis(4-hydroxy-3,5-dimethylphenyl)-2-hydroxyphenylmethane, bis(4-hydroxy-2,5-dimethylbenzene 2-hydroxyphenylmethane, bis(4-hydroxy-2,3,5-trimethylphenyl)-2-hydroxyphenyldecane, bis(4-hydroxy-2,3,5-tri Nonylphenyl)-3-hydroxyphenylmethane, bis(4-hydroxy-2,3,5-tridecylphenyl)-4-hydroxyphenylmethane, bis(4-hydroxy-2-indenyl- 5-cyclohexylphenyl)-3,4-hydroxyphenylmethyl 10 200813169 calcined, bis(4-carbo-2-methyl-5-cyclohexylphenyl)-4-3⁄4-ylphenyl 1-[1 -(4-hydroxyphenyl)isopropyl]-4-[l,l-bis(4-hydroxyphenyl)2 and other trisphenols, in the presence of an amine catalyst such as triethylamine or triethanolamine, dioxane Condensation reaction in an organic solvent such as 7 · butyrolactone, or esterification or The resulting partially esterified the like. It is preferable to blend the photosensitive material in a range of from 10,000 parts by mass to 60 parts by mass based on 100 parts by mass of the above-mentioned soluble resin. << Negative photosensitive composition>> When the resin component of the present invention is a negative photosensitive composition, it is a polymerizable compound or a photopolymerization initiator. The "photopolymerizable compound" is preferably a compound having an ethylenic double bond. <Compound having an ethylenic double bond> (Polymer compound having an ethylenic double bond) The compound having an ethylenic double bond may be an ethylenic bifunctional compound. In the present invention, a compound having an average molecular weight of 1,000 and having an ethylenic double bond is referred to as a high molecular compound having an ethylenic double bond. The polymer compound having an ethylenic double bond may, for example, be propyl methacrylic acid, fumaric acid, maleic acid, fumarate, monoethyl fumarate or 2-hydroxyethyl acrylate. Ester, mercapto 2_hydroxyethyl ester, ethylene glycol monodecyl ether acrylate, ethylene glycol monomethacrylate, ethylene glycol monoethyl acrylate, glycol ether methacrylate, glycerol acrylic acid Ester, glycerol methacrylate decane, > base] under benzene, in the line completely *J in 2 5 contains light to contain higher than the molecular weight of the olefinic acid, methacrylic acid decyl ether monoethyl S, C11 11 200813169 olefinic amine, mercapto acrylamide, acrylonitrile, methacrylonitrile, methyl acrylate, decyl methacrylate, ethyl acrylate, ethyl methacrylate, isobutyl acrylate, A Isobutyl acrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, benzyl acrylate, benzyl methacrylate, ethylene glycol diacrylate, ethylene glycol dimethacrylate, Diethylene glycol diacrylate, triethylene glycol diacrylate, triethylene glycol dioxime Acrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimercapto acrylate, butanediol dimercapto acrylate, propylene glycol diacrylate, propylene glycol dimercapto acrylate, trishydroxypropyl propane tripropylene decyl ester , trihydroxymercapto propane 'mercapto acrylate, tetrapyridyl propyl terephthalate, tetramethyl methacrylate tetramethyl acrylate, neopentyl alcohol triacrylate, neodecyl alcohol triterpenes Acrylate, neopentyl alcohol tetraacrylate, neopentyl alcohol tetradecyl acrylate, dipentaerythritol pentaacrylate, dipentaerythritol penta methacrylate, dipentaerythritol hexaacrylate , dipentaerythritol hexamethylene acrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol dimercapto acrylate, cardoepoxy diacrylate, etc. a monomer or an oligomer; a polyester (mercapto) acrylate obtained by reacting a polyester prepolymer obtained by condensing a polyol with a unit acid or a polybasic acid with (meth)acrylic acid to make a plurality of After reacting an alcohol group with a compound having two isocyanate groups, a poly(meth)acrylic acid amide phthalate obtained by reacting acrylic acid; a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a bisphenol S type epoxy resin, a phenol or a phenolic phenolic aldehyde (varnish) Type epoxy resin, resole type epoxy resin, trisphenol decane type epoxy resin, polycarboxylate polyglycidyl ester, polyol polyglycidyl ester, aliphatic or alicyclic epoxy resin An epoxy resin or a hydroxy-based acrylate resin obtained by reacting an epoxy resin such as an epoxy resin or a dihydroxybenzene 12 200813169 epoxy resin with (meth)acrylic acid. Further, a resin obtained by reacting the above-mentioned epoxy (meth)acrylic acid with a polybasic acid anhydride can also be used. Since the introduction of the acrylonitrile group or the mercaptopropenyl group into these compounds can improve the crosslinking efficiency, the coating film is excellent in light resistance and chemical resistance. The compound having an ethylenic double bond can form a coating film uniformly by setting the mass average molecular weight to 100% or more. Further, the polymer compound having an ethylenic double bond has a mass average molecular weight of 100,000 or less.蕤 佶皙 佶皙 单 抬 公 公 早 早 早 左 左 左 左 左 左 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Imaging. (photopolymerizable monomer)

Further, the compound having an ethylenic double bond may be a photopolymerizable monomer. Examples of the photopolymerizable monomer include decyl acrylate, decyl decyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, and ethylene glycol diacrylate. , ethylene glycol dimethacrylate, triethylene glycol diacrylate, triethylene glycol dimethacrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimethacrylate, propylene glycol dipropionate, propylene glycol Dimercapto acrylate, trihydrocarbyl propane triacrylate, trihydroxy propyl propane tridecyl acrylate, tetramethylolpropane tetraacrylate, tetrapyridyl propyl pyridinium acrylate, new Pentaerythritol triacrylic acid, neopentyl alcohol trimethacrylate, neopentyl alcohol tetraacrylate, neopentyl alcohol tetradecyl acrylate, dipentaerythritol pentaacrylate, dioxane Tetraol pentamethylpropionic acid S, dipentaerythritol hexapropylene acid s, dipentaerythritol hexa 13 1313 1313 曱 propyl propyl vinegar, 1,6-hexanediol diacrylate , benzyl acrylate acid, benzyl methacrylate, cardo epoxy diacrylate, propylene , Methacrylic acid and the like, but it is defined by these. Among them, a pluripotent photopolymerizable monomer is preferred. The compound having an ethylenic double bond is preferably a combination of a polymer compound having an ethylenic double bond and a photopolymerizable monomer. Thereby, the hardenability can be improved and the pattern can be easily formed.

The content of the photopolymerizable monomer is preferably 5% by mass or more and 50% by mass or less based on the solid content of the black composition, and more preferably 10% by mass or more and 40% by mass or less. In the above range, sensitivity, development, and resolution are easily balanced, which is preferable. (Polymer Binder) The photopolymerizable compound may be a polymer which can be polymerized by itself. In the present invention, the photopolymerizable compound also contains a mixture of a polymer binder and a photopolymerizable monomer. From the viewpoint of easy development, the polymer binder is preferably an alkali-developable binder. Specifically, the polymer binder may be a monomer having a carboxyl group such as acrylic acid or mercaptoacrylic acid, and methyl propionate, methyl mercaptopropionate, ethyl propionate, and methyl methacrylate. Ester, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate Benzyl acrylate, benzyl methacrylate, phenoxy acrylate, benzene 14 200813169 oxydecyl acrylate, isodecyl acrylate, isodecyl methacrylate, glycidyl methacrylate, styrene a copolymer of acrylamide, acrylonitrile, or the like, and a phenol novolac type epoxy acrylate polymer, a phenol novolak type epoxy methacrylate polymer, and a cresol novolak type epoxy acrylate polymer, Resin such as cresol novolac type epoxy methacrylate polymer, bisphenol A epoxy acrylate polymer, and bisphenol S epoxy acrylate polymer. The content of the monomer component having a carboxyl group of acrylic acid, methacrylic acid or the like constituting the above resin is preferably in the range of 5 mol% to 40 mol%. The mass average molecular weight of the above polymer binder is preferably in the range of from 1,000 to 100,000. By having a mass average molecular weight of 1,000 or more, the coating degree can be made uniform. Further, when the mass average molecular weight is 100,000 or less, more excellent developability can be obtained. When the photopolymerizable compound contains a polymer binder and a photopolymerizable monomer, the polymer binder, the photopolymerizable monomer, and the photopolymerization initiator are added in a total amount of 100 parts by mass, and the polymer binder is formulated to 10%. 60 parts by mass is preferred. When the amount of the compounding amount is 10 parts by mass or more, the film can be easily formed during coating and drying, and the coating strength after curing can be sufficiently enhanced. Further, by setting the blending amount to 60 parts by mass or less, the development performance can be improved. In addition, the polymerizable monomer component is preferably blended in a range of from 15 to 50 parts by mass per 100 parts by mass of the polymer binder, the photopolymerizable monomer, and the photopolymerization initiator. By setting the compounding amount to 15 parts by mass or more, it is possible to prevent photohardening failure and obtain sufficient heat resistance and chemical resistance. In addition, by setting the blending amount to 50 parts by mass or less, the coating film formation performance can be improved to 15 200813169. <Photopolymerization Initiator> The photopolymerization initiator may, for example, be 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-indolyl-1-phenylpropan-1-one, 1-[4- (2-carbylethoxy)phenyl]-2_yl-2-ylindol-1-propan-1-se-iso, 1-(4.isopropyl-phenyl)-2-yl--- 2-methylpropan-1-one, 1-(4-dodecylphenyl)-2-hydroxy-2-mercaptopropan-1-one, 2,2-dimethoxy-1,2- Diphenylethane-1-one, bis(4-dimethylaminophenyl)one, 2-methyl-1_[4-(methylhydrazine)phenyl]-2-misopropane-1-yl , 2 -pyringyl-2-didecylamino-1-(4-teranylphenyl)-butan-1 -anthracene, ethyl ketone, 1-[9-ethyl-6-(2-methyl Benzoyl)-9H-carbazol-3-yl]-,l-(〇-acetamidine), 2,4,6-trimercaptobenzylidene diphenylphosphine, 4·benzol Mercapto-4'-mercaptodimethyl sulfide, 4-dimethylaminobenzoic acid, 4-dimethylammonium benzoate, ethyl 4-dimethylaminobenzoate, Butyl 4-dimethylaminobenzoate, 4-dimethylamino-2-ethylhexylbenzoic acid, 4·didecylamino-2-isoaminobenzoic acid, benzyl-β- Methoxyethyl acetal, benzyl dimethyl嗣, 1-phenyl-1,2-propanedi-S--2-(0-ethoxy green) valence, methyl 0-benzhydrylbenzoate, 2,4-diethyl thiophene Tons of ketone, 2-chlorothioxanthone (2-〇111〇1"〇1:111〇 and 31111111〇116), 2,4-dimethyl methacrylone, 1-gas-4-propoxythiophene Ketone, thioxanthene, 2-chlorothioxanthene, 2,4·diethylthioxanthene, 2-nonylthioxanthene, 2-isopropylthioxanthene, 2-ethylhydrazine, octadecyl hydrazine, 1 , 2-benzopyrene, 2,3 bis diphenyl fluorene, azobisisobutyronitrile, benzoyl peroxide, cumene peroxide, 2-hydrothiobenzimidazole, 2-hydrogenthio Benzooxazole, 2-hydrothiobenzothiazole, 2-(o-phenyl)-4,5-di(metamethoxyphenyl)-imidazole 16 200813169 base dimer, diphenyl ketone, 2-chlorodiphenyl ketone, p-p-bis-decylaminodiphenyl ketone, 4,4'-bisdiethylaminodiphenyl ketone, 4,4'-dichlorodiphenyl ketone, 3,3-Dimethyl-4-methoxydiphenyl ketone, benzoin, benzoin, benzoin decyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzophenone Indolyl butyl ether, benzoin isobutyl ether, benzoin butyl ether, Acetophenone, 2,2-diethoxyacetophenone, p-dimethylacetophenone, p-didecylaminopropiophenone, dichloroacetophenone, trichloroacetophenone, p-butylene Acetophenone, p-didecylaminoacetophenone, p-tert-butyltrichloroacetophenone, p-butylidene acetophenone, a, alpha-dichloro-4-phenoxyphenyl Bismuth, thioxanthone, 2-mercaptothioxanthone, 2-isopropylthioxanthone, dibenzocycloheptanone, pentyl-4-didecylaminobenzoate, 9-phenylindole Pyridine, 1,7-bis(9-acridinyl)heptane, 1,5-bis(9-acridinyl)pentane, 1,3-bis(9-acridinyl)propane, p-methoxy Tri-trap, 2,4,6-paraxyl (trichloroindolyl)-s-triterpene, 2-methyl-4,6-bis(trichloromethyl)-s-trisole, 2-[2-( 5-decylfuran-2-yl)vinyl]-4,6-bis(trichloromethyl)-s-trimole, 2-[2-(furan-2-yl)vinyl]-4,6 - bis(trichloroindenyl)_s_triterpene, 2-[2-(4-diethylamino-2-methylphenyl)ethyl]-4,6-bis(trimethyl) -s-triterpene, 2-[2-(3,4-dimethoxyphenyl)vinyl]-4,6-bis(trichloromethyl)-s-triterpene, 2-(4-indole Oxyphenyl)-4,6-bis(trichloro) Base)-s-three tillage, 2-(4-ethoxystyryl)-4,6-bis(trichloromethyl)-s-triterpene, 2-(4·n-butoxyphenyl) · 4,6-bis(trichloroindenyl)-s-tripper, 2,4-bis-trichloroindolyl-6·(3-bromo-4-indolyloxy)phenyl-s-triazine, 2,4-bis-trimethylsulfonyl-6-(2- odorous-4-methoxy)phenyl-s-trisyl, 2,4-di-trichloromethyl odor-4-methoxy Styrylphenyl-s-three tillage, and 2,4-bis-trichloroindenyl-6-(2-bromo-4-indolyloxy)styrylphenyl-s-triterpene. These photopolymerization initiators may be used alone or in combination of two or more. The photopolymerization initiator is preferably contained in an amount of from 1 part by mass to 40 parts by mass per 100 parts by mass of the total of the photopolymerizable compound and the photopolymerization initiator. [solvent]

The black composition is preferably a solvent. The solvent may, for example, be ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol mono-n-propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol monodecyl ether, digan. Alcohol monoethyl ether, diethylene glycol mono-n-propyl ether, diethylene glycol mono-n-butyl ether, triethylene glycol monomethyl ether 'triethylene glycol monoethyl bond, propylene glycol monothiol bond, propylene glycol monoethyl Scale, propylene glycol mono-n-propyl ether, propylene glycol mono-n-butyl ether, di- propylene glycol monodecyl ether, diethylene glycol ethyl ether, dipropylene glycol mono-n-propyl ether, di-extension (poly)alkylene glycol monoalkyl ethers such as glycol-n-butyl ether, tri-n-propylglycol monodecyl ether, tri-n-propylglycol monoethyl ether; ethylene glycol monomethyl ether Acetate, ethylene glycol monoethyl ether acetate, diethylene glycol monomethyl ether acetate, diethylene glycol monoethyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl (poly)alkylene glycol monoalkyl ether acetates such as ether acetate; diethylene glycol dimethyl ether, diethylene glycol decyl ethyl ether, diethylene glycol diethyl ether, tetrahydrofuran Other ethers; methyl ethyl ketone, a ketone such as hexane, 2-heptanone or 3-heptanone; an alkyl lactate such as 2-hydroxypropionate or ethyl 2-hydroxypropionate; 2-hydroxy-2-mercaptopropionic acid Ethyl ester, methyl 3-methoxyoxypropionate, ethyl 3-methoxyoxypropionate, decyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl ethoxyacetate, Ethyl hydroxyacetate, decyl 2-hydroxy-3-methylbutanoate, 3-methoxybutyl butyl acetate, 3-mercapto-3-methoxybutylethyl 18 200813169 acid ester, 3-methyl 3--3-methoxybutylpropionate, ethyl acetate, n-acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, n-pentyl formate, isoamyl acetate, n-butyl propionate Ester, ethyl butyrate, n-propyl butyrate, butyl isopropyl ester, n-butyl butyrate, methyl pyruvate, ethyl pyruvate, n-propyl acetonate, methyl acetate methyl acetate, ethyl acetate Other esters such as 2-sided oxybutyrate; aromatic hydrocarbons such as toluene and xylene; N-mercaprolidone, N,N-dimethyldecylamine, and N,N-di Anthraquinones such as methyl acetamide. These solvents may be used alone or in combination of two or more. Among them, because propylene glycol monomethyl ether, ethylene glycol monodecyl ether acetic acid S! propylene glycol monodecyl ether acetate, propylene glycol monoethyl ether acetate, diglycidyl ether, diethylene glycol methyl The base ether, the cyclohexanone, and the 3-methoxy butyl acetate show excellent solubility in the photopolymerizable compound and the photopolymerization initiator, and the dispersibility of the insoluble component such as a black pigment can be improved. It is preferred to use propylene glycol monomethyl ether acetate or 3-oxybutyl acetate. The solvent may be used in an amount of from 50 parts by mass to 500 parts by mass based on 100 parts by mass of the resin component and the black pigment. [Other Components] The black composition of the present invention can be formulated with an additive as necessary. Examples thereof include a thermal polymerization inhibitor, an antifoaming agent, a surfactant, a sensitizing hardening accelerator, a photocrosslinking agent, a photosensitizer, a dispersing agent, a dispersing aid filler, an adhesion promoter, and an antioxidant. UV absorber, anti-agglomeration, etc. Further, the thermal polymerization inhibitor can use a hydroformin, a hydroquinone monoethyl ether, or the like, and a change in the ratio of the amino acid to the amine group.

In addition, as the antifoaming agent, it is possible to use Shixia and fluorine compounds, and a well-known agent such as an anion, a cation or a nonionic system is used at the interface. [Preparation method of black composition] The preparation method of the black composition of the present invention can be obtained by mixing all of the above resin component and black pigment. A filter is used to homogenize the resulting mixture. [Partition Wall for Ink Jet Color Filter] The partition wall of the present invention can use the above-described black form of the present invention. According to the partition wall formed of the black composition of the present invention (containing a black pigment having a particle diameter or smaller), it is possible to suppress the discharge of the ink from the partition wall. Thereby, the color filter can be prevented from coloring or color mixing. The ink flows out of the partition wall, and it is presumed that it is caused by the capillary phenomenon due to the small surface of the partition wall. The roughness can be improved by making the dispersed particle diameter of the black pigment to be 1 20 . Further, the partition wall of the present invention can also be formed by using the black partition wall forming composition of the present invention. Even when such a composition is used, by making the surface roughness of the partition wall 8 mm or less to 1 to 6 mm or less, it is possible to suppress the discharge into the partition wall. Thereby, the color filter can prevent the infiltration of the ink, and the surface roughness in the present invention means that the interfacial force 丨 active agent can be operated by the mixer at various interfaces, or the composition can be formed into The surface roughness of the printing ink in the range of 1 to 20 nm to the partition wall is such that the surface of the surface of the ink is less than or equal to the thickness of the nano-color composition, and the partition wall is formed by the following, preferably the ink is discharged from the partition wall or mixed. S micromirror (AFM) 20

200813169 Surface roughness (Ra) when measured. As described above, the ink flows out from the partition wall, and it is presumed that it is caused by the capillary phenomenon due to the roughness of the partition wall. It is considered that by making the surface roughness of the partition wall 8 nm or less, the ink can be sucked up by capillary action, and the ink discharge can be suppressed to form the partition wall of the present invention (surface roughness is 8). The millimeter _ partition wall forming composition contains the same resin component, solvent, and necessary additives as the black composition of the present invention. The partition wall formed is transparent or black 5 is preferably black. When the partition wall is colored, it can be formed as a black matrix and can be integrally formed with the black matrix. When it is black, the partition wall forming composition further contains a black pigment. The black pigment has a light-shielding property and can have a surface roughness of 8 The particle diameter of the particle below the nanometer is not particularly limited. The particle diameter of the dispersed particle is preferably 120 nm or less. Further, by changing the particle diameter of the dispersed particle, the surface roughness of the partition wall can be freed. Thereby, it is possible to form a bleed condition in which the ink can be freely adjusted, and the dispersed particle diameter of the black pigment is preferably 1 to 10 nm, more preferably 40 nm or more. When the dispersed particles are 40 nm or more, the dispersibility of the black pigment can be improved, and sedimentation of the black material in the partition wall forming composition can be suppressed. [Formation of Color Filter] The black composition of the present invention is used to form the partition. a method of forming a wall and a color filter having a wall. When the wall forming group is used, the partition wall can be formed by the same method and the surface of the partition wall can be used. The wall can be adjusted in black by the roughness of the wall. The next is the color of the color. The color of the partition 21 200813169 color filter. First, the black composition of the present invention is applied onto a substrate by a contact transfer coating device such as a roll coater, an applicator, or a bar coater, or a non-contact type coating device such as a rotary device or a curtain coater. The coated black composition was dried to remove the solvent. The method is not particularly limited. For example, any of the following methods can be used for the solvent, and (1) drying on a hot plate at a temperature of 80 ° C to 120 ° C, preferably 90 ° C to ° C, for 60 seconds to 120 seconds. The method, (2) at a temperature of several hours to several days, (3) in a warm wind r heater or infrared heating for tens of minutes to several hours. Next, the mask is placed in the middle, and the coating film is irradiated with an active energy ray such as ultraviolet rays or sub-laser light to perform partial exposure. The energy to be irradiated differs depending on the composition of the black composition, and is preferably, for example, about 30 mJ/cm 2 to mJ/cm 2 . Next, the exposed film is developed by a developing liquid to be patterned into a desired shape. The development method is not particularly limited, and for example, a dipping method or the like can be used. Examples of the developing solution include organic substances such as ethanolamine, diethanolamine, and alcoholamine, and aqueous solutions such as sodium hydroxide, potassium hydroxide, sodium carbonate, and a quaternary ammonium salt. Subsequently, the developed pattern is post-baked at about 200 ° C. Preferably, the pattern of the formed light-shielding film is exposed to the entire surface. As described above, it is possible to form a partition (black matrix) having a predetermined pattern formation. Further, the thickness of the partition wall (black matrix) formed on the substrate, the reverse roll coating 〇 drying removes 100, and the crying Φ UUT I quasi-splitting line S 2000 is required, and triethylamine. The color moment is usually 22 200813169 and can be set in the range of 5 μm to 10 μm, preferably 1 μm to 5 μm, and more preferably 1.5 μm to 4 μm. When the film thickness is 1.5 μm or more, it is particularly preferable as a partition wall for an ink jet type color filter. Further, the profile angle of the partition wall formed is preferably 50 or more, more preferably 70 or more. Moreover, the profile angle is preferably less than 90 °. Here, "contour angle" refers to the angle between the surface of the substrate and the slope of the pattern. Further, the partition wall is formed to have an opening. When the color filter is formed by the ink jet type, there is a case where the ink composition overflows outside the opening of the partition wall, but when the contour angle is 50° or more, even if the ink composition is slightly overflowed, because The overflowed ink composition can be returned to the opening, so that overflow can be prevented. Finally, in the opening portion of the partition wall having the black matrix formed in the above-described order, the R, G, and B inks are discharged into the partition wall by the ink jet type, and then accumulated in the partition wall, and then by heat or light. Harden the accumulated ink. Thereby, a color filter can be formed. [Examples] Hereinafter, the present invention will be described based on examples. [Synthesis Example 1]

In a 500 ml four-necked flask, 235 g (epoxy equivalent 235) bisphenol quinone type epoxy resin, 1 10 mg of tetraammonium chloride, 1 gram of 2,6-di-t-butyl-4 Toluene and 72.0 g of acrylic acid were dissolved by blowing air at a rate of 25 ml/min while heating from 90 °C to 100 °C. Next, in a state where the solution was cloudy, the temperature was gradually raised to 1 20 ° C 23 200813169 to completely dissolve it. At this point, although the solution gradually became transparent and viscous, it continued to stir. The acid value was measured during this period and heating was continued for about 12 hours to less than 1.0 mg KOH/g. Then, the mixture was cooled to room temperature to obtain a colorless transparent and solid bisphenolphthalein type epoxy acrylate as shown in the following structural formula (1). [Chemical Formula 1]

H2c:

Next, the above-mentioned bisphenol fluorene-type epoxy acrylate thus obtained was added in an amount of 30.7 g, and 600 g of propylene glycol monomethyl ether acetate (PGME A) was added thereto to dissolve it, and then 8 0.5 g of the mixture was mixed. Phenyl ketone tetracarboxylic dianhydride and 1 g of tetraethylammonium bromide were reacted at 110 ° C to 1 15 ° C for 4 hours. After confirming the disappearance of the acid anhydride, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and reacted at 90 ° C for 6 hours to obtain a resin. Further, the disappearance of the acid anhydride group was confirmed by IR spectroscopy. [Example 1] 30 parts by mass of the resin synthesized in Synthesis Example 1, 20 parts by mass of dipentaerythritol hexaacrylate (DPHA), 10 parts by mass of a photopolymerization initiator (trade name: IRGACURE 3 69), 50 parts by mass of a pigment dispersion containing carbon black having a particle diameter of 100 nm (trade name: RT (carbon black content: 20% by mass, solvent acrylate 3-methoxybutyl acrylate), used by Royal Chinese Co., Ltd.) The diol-methacrylate was adjusted to have a solid content concentration of 28% by mass to prepare a black composition (component for forming a partition wall). 24 200813169 The black composition was coated on a glass substrate, and a coating film was obtained. Then, on the coating film (black composition), ultraviolet rays were irradiated with an exposure amount. Subsequently, post-baking was carried out with a 4% potassium hydroxide solution of 〇·〇 to form a partition wall having a thickness of 2.0 μm. The surface roughness (Ra) was measured by a microscope (AFM), and as a result, Ra = 4 was added to the partition wall obtained by the above procedure, and green resistance was added (trade name: RH 1 008, manufactured by Tokyo Ohka Kogyo Co., Ltd.). The ink flows out of the partition wall. [Comparative Example 1] In addition to the pigment dispersion liquid, a pigment dispersion liquid having a particle diameter of 160 ° (product name: OCT (carbon black content 20 mass 0 / methoxy acid 3-methoxybutyl)), manufactured by Royal National Color Co., Ltd. was used. In addition to the same method, the partition wall is formed by the same method. The surface roughness of the partition wall is nano. On the partition wall, ink is dripped in the same manner as described above, and ink is discharged to the outside of the gambling. As described above, the black composition of the present invention exhibits a partition wall capable of forming an ink outflow. Further, the partition wall display of the present invention can be suppressed. [Simple description of the drawing] None [Explanation of main component symbols] None 90 °C drying and 1 00 m J/Dev image and inter-atomic force at 2 2 0 • 5 nm. P ink (green light, no carbon black of the rice, solvent propylene was observed by the example Ra = 10.5. It was observed that the printed ink was printed out. 25

Claims (1)

200813169 X. Patent application scope: 1. A black composition, which is a black composition for forming an ink-jet color filter partition wall containing a resin component and a black pigment, wherein the black pigment has a dispersed particle diameter of 1 2 0 Below the meter. 2. The black composition of claim 1, wherein the black pigment is carbon black or titanium black. 3. The black composition according to claim 1, wherein the resin component contains a photopolymerizable compound and further contains a photopolymerization initiator. 4. The black composition according to claim 1, wherein the black pigment is contained in an amount of from 5% by mass to 70% by mass based on the total solid content of the solvent. A partition wall for an ink jet type color filter, which is formed by the black composition described in claim 1 of the patent application. 6. A partition wall for an ink jet type color filter having a surface roughness of 8 nm or less. 7. The partition wall for an ink jet type color filter according to claim 6 of the patent application is black. The partition wall for an ink-jet type color filter according to the seventh aspect of the invention is formed of a resin component and a partition wall-forming composition containing a black pigment. 9. The partition wall for an ink jet type color filter according to claim 8, wherein the black pigment is carbon black or titanium black. A color filter comprising a partition wall for an ink jet type color filter according to claim 5 or 6. 27 200813169 VII. Designated representative map: (1) The representative representative of the case is: No (2), the representative symbol of the representative figure is a simple description. · No. 8. If there is a chemical formula in this case, please reveal the characteristics that can best show the invention. Chemical formula: