JP2010156804A - Colored resin composition, method for producing the same, color filter using the colored resin composition, and display device including the color filter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a red colored resin composition which attains higher luminance of a red colored layer of a color filter and which can improve the productivity of the color filter, because the storage stability of the resin composition used for forming the colored layer is improved, and to provide a method for producing the colored resin composition, a color filter using the colored resin composition, and a display device that includes the color filter. <P>SOLUTION: The colored resin composition includes (A) a pigment, (B) a pigment dispersant and (C) a photosetting or thermosetting material, wherein the pigment (A) includes C.I. Pigment Red 177, C.I. Pigment Red 242 and C.I. Pigment Red 254, and the colored resin composition is obtained, using a pigment dispersion prepared by dispersing in a solvent a pigment mixture having a content of C.I. Pigment Red 254 of 50 to <100 mass% relative to the total mass of the pigment (A) and including C.I. Pigment Red 177 and C.I. Pigment Red 242, and the color filter has a colored layer formed using the colored resin composition. The display device includes the color filter. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a colored resin composition, a method for producing the colored resin composition, a color filter using the same, and a display device including the color filter.

Many thin image display devices represented by displays and the like, so-called flat panel displays, have been put on the market, characterized by being thinner than a cathode ray tube type display and taking up little space in the depth direction. The market price has become affordable year by year with the evolution of production technology, the demand has further expanded, and the production volume has been increasing year by year. In particular, color LCD TVs have reached the point where their production and demand cycles have been successful and have almost completely replaced CRT displays. In the case of a color liquid crystal display, the backlight is used as a light source, the amount of light is controlled by electrically driving the liquid crystal, and color expression is performed by the light passing through the color filter. Therefore, a color filter must be present in the color representation of a liquid crystal television and plays a major role in determining the performance of the display.
The color filter is usually separated on a transparent substrate by a black matrix (hereinafter sometimes referred to as “BM”) patterned in a predetermined shape such as a lattice to shield the boundary between pixels. Each pixel is composed of a colored layer in which a plurality of colors (usually three primary colors of red (R), green (G), and blue (B)) are arranged in a predetermined order.

The role of BM is prevention of color mixing of each colored resist, improvement of contrast, prevention of light leakage, etc. The performance required for BM is high light-shielding property, developability and curability of coating film, coating film strength, The smoothness of the coating surface is required.
Conventionally, BM has been formed by a method such as sputtering of chromium, but for environmental considerations, etc., a colored resin composition (resist, for example) in which a light-shielding black pigment such as carbon black or titanium black is mixed with a photopolymerizable material. The composition, hereinafter referred to as “resin BM”), is being changed to a method of curing and forming.
Incidentally, an optical density (hereinafter referred to as “OD value”) is generally used as an index indicating the light shielding performance of BM, and the greater the OD value per unit film, the higher the light shielding property. . Generally, a film having a film thickness of 1.2 to 1.4 μm and an OD value of about 4.0 is practically used, but a thinner and blacker resin BM is required. Yes.

  Similarly to the resin BM, the colored layer is a colored resin composition (resist composition) in which color pigments based on the three primary colors of red (R), green (G), and blue (B) are mixed with a photopolymerizable material. ) And good color reproducibility, good contrast, heat resistance, durability, developability and curability of the coating film, coating film strength, coating film surface smoothness, etc. are required. Further, as a recent trend, there has been a demand for power saving of a liquid crystal television, and in order to improve the utilization efficiency of a backlight, a high brightness of a color filter is particularly demanded.

  In the case of a red (R) colored resin composition, in order to satisfy color characteristics such as good color reproducibility, it is common to use a plurality of types of colored pigments. Examples of red (R) color pigments include C.I. I. A pigment red 177 (hereinafter sometimes referred to as PR177) as a main component and a yellow pigment combined therewith is generally used. However, this does not provide a satisfactory color filter in terms of high brightness and high contrast, and further improvements are required. Therefore, a C.I. having a predetermined specific surface area in order to improve color characteristics such as increasing the transparency, that is, the brightness, and increasing the color purity. I. A red composition for a color filter using Pigment Red 242 (hereinafter sometimes referred to as PR242) as a main pigment and a colored composition containing PR242 and a pigment having a predetermined average particle diameter have been proposed (for example, patents). Reference 1 and 2).

  As described in Patent Document 1, PR242 has a steep shape in which the rising wavelength of the transmission spectrum is in the range of 530 to 560 nm, and is effective for increasing the brightness and contrast of the color filter. Pigment. However, since PR242 has poor dispersibility and dispersion stability, the dispersion and coloring composition using PR242 may cause the pigment to increase in size or aggregate over time, and its characteristics cannot be fully considered. There's a problem. In Patent Document 2, after mentioning this point, as an excellent evaluation standard in which almost no change in viscosity immediately after and after dispersion is observed in the examples, the change in the measured viscosity value is less than twice. Coloring compositions that meet the evaluation criteria are not sufficient to withstand practical use. Examples of the method for forming the colored layer include a photolithography method and an ink jet method. In particular, in the ink jet method, the required standard for the increase in the viscosity of the colored composition is strict. A coloring composition that satisfies the evaluation criterion that the change is less than twice cannot respond at all. Also, due to the recent increase in brightness of color filters, C.I. I. Unless the pigment red 254 (hereinafter sometimes referred to as PR254) is the main pigment, the required luminance value cannot be reached.

Japanese Patent No. 3924872 JP 2002-309135 A

  The present invention has been made under such circumstances, and achieves high brightness of the red colored layer of the color filter and improves the storage stability of the resin composition used for forming the colored layer. An object of the present invention is to provide a red colored resin composition, a method for producing the colored resin composition, a color filter using the same, and a display device including the color filter, which can improve the productivity of the color filter. Is.

  As a result of intensive studies to achieve the above problems, the present inventors have obtained a colored resin composition obtained by using a pigment dispersion in which a specific red pigment having a predetermined average particle diameter is mixed and dispersed. It discovered that a thing could solve the said subject. The present invention has been completed based on such findings.

That is, the gist of the present invention is as follows.
1. A colored resin composition comprising (A) a pigment, (B) a pigment dispersant, and (C) a light or thermosetting material, wherein the (A) pigment is C.I. I. Pigment Red177, C.I. I. Pigment Red242, and C.I. I. Pigment Red 254, and C.I. relative to the total mass of the (A) pigment. I. Pigment Red254 content is 50% by mass or more and less than 100% by mass; I. Pigment Red177 and C.I. I. A colored resin composition obtained by using a pigment dispersion in which a pigment mixture containing Pigment Red242 is dispersed in a solvent.
2. 5 to 75% by weight of C.I. I. Pigment Red177 and 25 to 95% by mass of C.I. I. 2. The colored resin composition as described in 1 above, which is a pigment mixture comprising Pigment Red242.
3. (B) The colored resin composition according to 1 or 2 above, wherein the pigment dispersant is a polyester polymer dispersant having a basic functional group.
4). The manufacturing method of the colored resin composition which has the following processes 1 and 2.
Step 1. C. I. Pigment Red177, C.I. I. Pigment Red242, and C.I. I. Pigment Red254 is a pigment dispersion step in which (A) a pigment containing (P) Pigment Red254 is dispersed in (D) a solvent using (B) a pigment dispersant, and the pigment dispersion is C.I. I. Pigment Red177 and C.I. I. 1. Pigment dispersion step 2 obtained using a pigment dispersion in which a pigment mixture containing Pigment Red 242 is dispersed in a solvent. 4. Mixing step of mixing the pigment dispersion obtained in step 1 and (C) a light or thermosetting material The color filter which has a colored layer formed using the colored resin composition in any one of said 1-3.
6). 6. The color filter as described in 5 above, wherein the colored layer is formed by an inkjet method.
7). A display device comprising the color filter as described in 5 or 6 above.

  According to the present invention, the brightness of the red colored layer of the color filter is increased, and the storage stability of the resin composition used for forming the colored layer is improved, thereby improving the productivity of the color filter. A red colored resin composition, a method for producing the colored resin composition, a color filter using the red colored resin composition, and a display device including the color filter can be provided.

[Colored resin composition]
The colored resin composition of the present invention comprises (A) a pigment, (B) a pigment dispersant, (C) a light or thermosetting material, and (D) a solvent, and a pigment mixture containing a predetermined pigment is used as the solvent. It is obtained using a dispersed pigment dispersion.

<< (A) Pigment >>
In the colored resin composition of the present invention, (A) the pigment used as the pigment is a compound classified as a pigment in the color index (CI; issued by The Society of Dyers and Colorists), C. a red pigment. I. Pigment Red177 (hereinafter sometimes referred to as PR177), C.I. I. Pigment Red 242 (hereinafter sometimes referred to as PR242), and C.I. I. Pigment Red254 (hereinafter sometimes referred to as PR254).

The average particle size of PR177, PR242 and PR254 is preferably in the range of 10 to 200 nm, and more preferably in the range of 20 to 150 nm. When the average particle diameter of the pigment is in the above range, the liquid crystal display device manufactured using the colored resin composition of the present invention can be made to have high brightness and high quality, and can be produced at low cost. it can.
The average particle diameter is a value measured by a laser scattering method. Specifically, the average particle diameter is measured by dispersing pigment particles in a solvent, capturing the scattered light obtained by irradiating the dispersion solvent with a laser beam, and calculating.

  (A) The content of PR254 in the pigment is 50% by mass or more and less than 100% by mass, and the pigment of the present invention has PR254 as the main pigment. Moreover, the content ratio of the total amount of PR177 and PR242 in the pigment (A) is usually more than 0% by mass and less than 50% by mass. The content of PR177 with respect to the total amount of PR177 and PR242 is preferably 5 to 75% by mass, and the content of R242 is preferably 25 to 95% by mass. Furthermore, the content of PR242 in the pigment (A) is preferably in the range of 5 to 45 mass%, more preferably in the range of 15 to 45 mass%, and still more preferably 20 to 40 mass%.

(A) The pigment is a color index (CI) such as a yellow pigment, an orange pigment, a red pigment, a blue pigment, a violet pigment, and a green pigment, as long as the effects of the present invention are not impaired. Numbered, silicon oxide, titanium oxide, barium sulfate, calcium carbonate, zinc white, lead sulfate, yellow lead, zinc yellow, red rose (red iron (III) oxide), cadmium red, ultramarine blue, bitumen, Inorganic pigments such as chromium oxide green, cobalt green, amber, titanium black, synthetic iron black, and carbon black can be used in combination.
The average particle diameter of these pigments is preferably in the range of 10 to 200 nm, and more preferably in the range of 20 to 150 nm. Further, the content of these pigments in the (A) pigment is usually 30% by mass or less, and preferably 25% by mass or less.

In the colored resin composition of the present invention, the content of the pigment used as the component (A) is not particularly limited as long as a desired color can be formed when a colored layer such as a color filter is used. Although it varies depending on the type, it is preferably in the range of 20 to 100% by mass and more preferably in the range of 30 to 80% by mass with respect to the solid content other than the pigment in the colored resin composition. . When the content of the pigment is within the above range, a colored resin composition capable of forming a colored layer capable of forming a desired color can be obtained, and further, the pigment can be uniformly dispersed in the colored resin composition. it can.
The solid content is all components other than the above-described solvent, and includes a polyfunctional monomer dissolved in the solvent.

<< (B) Pigment dispersant >>
(B) The pigment dispersant is not particularly limited as long as it is used in a resist composition for a color filter, but those known as polymer dispersants have high pigment dispersibility and are stable. It is preferable because of its high properties.
The polymer dispersant has a long chain portion that maintains dispersibility by steric repulsion and an adsorption portion that adsorbs to the pigment surface. As the resin constituting the long chain part, acrylic, polyester, polyurethane, polyethyleneimine, etc. are used. As the polar group constituting the adsorption part, amino group, amide group, imide group, various acid groups are used. Can be mentioned.
Such polymer dispersants can be used singly or in combination of two or more.

  Among these, polyester-based and polyurethane-based polymer dispersants having basic functional groups such as amino groups, amide groups, imide groups, and functional groups containing N-containing heterocycles such as pyridine, pyrimidine, and pyrazine. preferable. The amine value of the basic functional group is preferably in the range of 1 to 100 mgKOH / g, and more preferably in the range of 2 to 60 mgKOH / g. When the amine value is within the above range, good dispersibility and dispersion stability are obtained, and developability and resolution are also good.

  Examples of the polyester-based polymer dispersant having a basic functional group include commercially available products such as “Azisper PB821”, “Azisper PB711”, and “Azisper PN411” (all manufactured by Ajinomoto Fine Techno Co., Ltd.). Examples of the polyurethane-based polymer dispersant having a functional group include commercially available products such as “EFKA4010” and “EFKA4050” (manufactured by EFKA).

  (B) It is preferable that the usage-amount of a pigment dispersant is 1-80 mass% with respect to (A) pigment, 10-80 mass% is more preferable, 30-80 mass% is further more preferable. If the amount of the (B) pigment dispersant used is within the above range, good (A) pigment dispersibility and dispersion stability can be obtained.

<< (C) Light or thermosetting material >>
(C) The light or thermosetting material is not particularly limited as long as it is a material that crosslinks and cures by irradiating ultraviolet rays or visible light, and a material that crosslinks and cures by heat. It can be appropriately selected from a photo-curable resin, a thermosetting resin, and the like.

(Photo-curing material)
As the photocurable resin, a compound having two or more ethylenically unsaturated double bonds is used, and in particular, a polyfunctional (meth) acrylate and / or an oligomer thereof having two or more acryloyl groups or methacryloyl groups. It is preferable that

  Examples of such polyfunctional (meth) acrylates include ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, hexanediol di (meth) acrylate, long chain aliphatic di (meth) acrylate, and neopentyl glycol di (Meth) acrylate, hydroxypivalate neopentyl glycol di (meth) acrylate, stearic acid modified pentaerythritol di (meth) acrylate, propylene glycol di (meth) acrylate, glycerol di (meth) acrylate, triethylene glycol di (meth) Acrylate, tetraethylene glycol di (meth) acrylate, tetramethylene glycol di (meth) acrylate, butylene glycol di (meth) acrylate, dicyclopentanyl (Meth) acrylate, polyethylene glycol di (meth) acrylate, polypropylene di (meth) acrylate, triglycerol di (meth) acrylate, neopentyl glycol modified trimethylolpropane di (meth) acrylate, allylated cyclohexyl di (meth) acrylate, Methoxylated cyclohexyl di (meth) acrylate, acrylated isocyanurate, bis (acryloxyneopentyl glycol) adipate, bisphenol A di (meth) acrylate, tetrabromobisphenol A di (meth) acrylate, bisphenol S di (meth) acrylate, Bifunctional (butanediol di (meth) acrylate, phthalic acid di (meth) acrylate, phosphoric acid di (meth) acrylate, zinc di (meth) acrylate) Data) acrylate and the like.

  Examples of the trifunctional or higher polyfunctional (meth) acrylate include trimethylolpropane tri (meth) acrylate, trimethylolethane tri (meth) acrylate, glycerol tri (meth) acrylate, pentaerythritol tri (meth) acrylate, penta Erythritol tetra (meth) acrylate, alkyl-modified dipentaerythritol tri (meth) acrylate, tri (meth) acrylate phosphate, tris (acryloxyethyl) isocyanurate, tris (methacryloxyethyl) isocyanurate, dipentaerythritol tetra (meta) ) Acrylate, ditrimethylolpropane tetraacrylate, alkyl-modified dipentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (meth) a Relate, dipentaerythritol penta (meth) acrylate, alkyl-modified dipentaerythritol penta (meth) acrylate, urethane tri (meth) acrylate, ester tri (meth) acrylate, urethane hexa (meth) acrylate, ester hexa (meth) acrylate, etc. Is mentioned.

  These polyfunctional (meth) acrylates may be used individually by 1 type, and may be used in combination of 2 or more type. When the colored resin composition of the present invention requires excellent photocurability (high sensitivity), the polyfunctional monomer has three (trifunctional) or more polymerizable double bonds. Some are preferable, and for example, dipentaerythritol penta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and the like are suitably used.

<Photoinitiator>
When a photocurable resin is used in the colored resin composition of the present invention, a photoinitiator is preferably used. There is no restriction | limiting in particular as a photoinitiator, It can select from various photoinitiators known conventionally and can use it suitably. For example, aromatic ketones such as benzophenone, Michler ketone, 4,4′-bisdiethylaminobenzophenone, 4-methoxy-4′-dimethylaminobenzophenone, 2-ethylanthraquinone, phenanthrene, benzoin methyl ether, benzoin ethyl ether, benzoin phenyl ether, etc. Benzoin ethers, benzoin such as methylbenzoin, ethylbenzoin, 2- (o-chlorophenyl) -4,5-phenylimidazole dimer, 2- (o-chlorophenyl) -4,5-di (m-methoxyphenyl) Imidazole dimer, 2- (o-fluorophenyl) -4,5-diphenylimidazole dimer, 2- (o-methoxyphenyl) -4,5-diphenylimidazole dimer, 2,4,5-tria Reel imidazole Dimer, 2- (o-chlorophenyl) -4,5-di (m-methylphenyl) imidazole dimer, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone, 2 -Trichloromethyl-5-styryl-1,3,4-oxadiazole, 2-trichloromethyl-5- (p-cyanostyryl) -1,3,4-oxadiazole, 2-trichloromethyl-5- ( halomethyloxadiazole compounds such as p-methoxystyryl) -1,3,4-oxadiazole, 2,4-bis (trichloromethyl) -6-p-methoxystyryl-S-triazine, 2,4-bis (Trichloromethyl) -6- (1-p-dimethylaminophenyl-1,3-butadienyl) -S-triazine, 2-trichloromethyl-4-amino-6-p-meth Cistyryl-S-triazine, 2- (naphth-1-yl) -4,6-bis-trichloromethyl-S-triazine, 2- (4-ethoxy-naphth-1-yl) -4,6-bis-trichloro Halomethyl-S-triazine compounds such as methyl-S-triazine, 2- (4-butoxy-naphth-1-yl) -4,6-bis-trichloromethyl-S-triazine, 2,2-dimethoxy-1, 2-diphenylethane-1-one, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropanone, 1,2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -Butanone-1,1-hydroxy-cyclohexyl-phenyl ketone, benzyl, benzoylbenzoic acid, methyl benzoylbenzoate, 4-benzoyl-4'-methyl Diphenyl sulfide, benzyl methyl ketal, dimethylaminobenzoate, isoamyl p-dimethylaminobenzoate, 2-n-butoxyethyl-4-dimethylaminobenzoate, 2-chlorothioxanthone, 2,4-diethylthioxanthone, 2,4-dimethylthioxanthone , Isopropylthioxanthone, ethanone, 1- [9-ethyl-6- (2-methylbenzoyl) -9H-carbazol-3-yl] -1- (o-acetyloxime), 4-benzoyl-methyldiphenyl sulfide, 1- Hydroxy-cyclohexyl-phenyl ketone, 2-benzyl-2- (dimethylamino) -1- [4- (4-morpholinyl) phenyl] -1-butanone, 2- (dimethylamino) -2-[(4-methylphenyl) ) Methyl] -1- [ -(4-morpholinyl) phenyl] -1-butanone, α-dimethoxy-α-phenylacetophenone, phenylbis (2,4,6-trimethylbenzoyl) phosphine oxide, 2-methyl-1- [4- (methylthio) Phenyl] -2- (4-morpholinyl) -1-propanone and the like. These photoinitiators may be used individually by 1 type, and may be used in combination of 2 or more type.

  In the colored resin composition of the present invention, the content of the photoinitiator is usually about 0.01 to 100 parts by mass, preferably 5 to 60 parts by mass with respect to 100 parts by mass of the photocurable resin. If the content is less than the above range, the polymerization reaction cannot be sufficiently caused, so that the hardness of the colored layer may not be sufficient. In some cases, the content of pigments and the like in the solid content is relatively small, and a sufficient color density cannot be obtained.

(Thermosetting material)
Examples of the thermosetting resin include an epoxy resin, a phenol resin, a polyester resin, an amino resin, an imide resin, a urea resin, and a melamine resin. Among these, an epoxy resin is particularly preferable.

Examples of the epoxy resin include those having 2 or more, preferably 2 to 50, more preferably 2 to 20 epoxy groups in one molecule, and a monomer containing a carbon-carbon unsaturated bond and an epoxy group. An epoxy group-containing polymer polymerized using at least and / or an epoxy group-containing compound having two or more epoxy groups are preferably used. These epoxy resins are preferably used in combination with a polyvalent carboxylic acid derivative whose carboxyl group is made latent (blocked) with a vinyl ether compound. Specific examples of such an epoxy resin preferably include those described in, for example, JP-A-2007-72284.
Moreover, when using a thermosetting resin in the colored resin composition of this invention, various additives etc. can be used as needed, for example, heat curing as described in Unexamined-Japanese-Patent No. 2007-72284. Preferable examples include thermal latent catalysts that sometimes show activity, vinyl ether surfactants composed of polymers obtained using vinyl ether monomers such as alkyl vinyl ether monomers, and solvents.

  The content of (C) light or thermosetting material in the colored resin composition of the present invention is such that the mass ratio of (A) pigment to (B) pigment dispersant and (C) light or thermosetting material is 0. The amount of 0.1 to 0.8 is preferable, the amount of 0.2 to 0.7 is more preferable, and the amount of 0.3 to 0.65 is more preferable. (C) If the content of the light or thermosetting material is within the above range, a sufficient color density is obtained, which is preferable.

<< (D) Solvent >>
In the colored resin composition of the present invention, the solvent used as the component (D) is not particularly limited as long as it does not react with each component in the colored resin composition and can dissolve or disperse them. Not. Specifically, alcohols such as methyl alcohol, ethyl alcohol, N-propyl alcohol, isopropyl alcohol; ether alcohols such as methoxy alcohol, ethoxy alcohol, methoxyethoxyethanol, ethoxyethoxyethanol; ethyl acetate, butyl acetate, acetic acid 3 -Esters such as methoxybutyl, methyl methoxypropionate, ethyl ethoxypropionate, ethyl lactate; ketones such as acetone, methyl isobutyl ketone, cyclohexanone; methoxyethyl acetate, methoxypropyl acetate, methoxybutyl acetate, ethoxyethyl acetate, ethyl Acetates such as cellosolve acetate, methoxyethoxyethyl acetate, ethoxyethoxyethyl acetate; Ethers such as ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, tetrahydrofuran; ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether Glycol ether acetates such as acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate; N, N-dimethyl Aprotic amides such as rumamide, N, N-dimethylacetamide and N-methylpyrrolidone; lactones such as γ-butyrolactone; unsaturated hydrocarbons such as benzene, toluene, xylene and naphthalene; n-heptane, n- Solvents such as saturated hydrocarbons such as hexane and n-octane are listed.

Of these, ether alcohol acetates, ethers, glycol ether acetates, esters, and the like can be suitably used.
Especially, as a solvent used for this invention, MBA (3-methoxybutyl acetate), PGMEA (propylene glycol monomethyl ether acetate), DMDG (diethylene glycol dimethyl ether), diethylene glycol methyl ethyl ether, PGME (propylene glycol monomethyl ether), BCA (Diethylene glycol butyl ether acetate) or a mixture thereof is preferred from the viewpoint of solubility of the pigment dispersant and applicability.

  The content of the (D) solvent in the colored resin composition of the present invention is not particularly limited as long as each component of the colored resin composition can be uniformly dissolved or dispersed. In the present invention, the component excluding the solvent of the colored resin composition is preferably in the range of 5 to 40% by mass, more preferably in the range of 10 to 30% by mass. By being the said range, it can be set as the viscosity suitable for application | coating.

  In the colored resin composition of the present invention, various additives such as a polymerization terminator, a chain transfer agent, a plasticizer, an antifoaming agent, a silane coupling agent, and an ultraviolet ray are added as necessary without departing from the object of the present invention. Examples include absorbents and adhesion promoters.

[Method for producing colored resin composition]
The method for producing the colored resin composition of the present invention comprises step 1. C. I. Pigment Red177, C.I. I. Pigment Red242, and C.I. I. Pigment Red254 is a pigment dispersion step in which (A) a pigment containing (P) Pigment Red254 is dispersed in (D) a solvent using (B) a pigment dispersant, and the pigment dispersion is C.I. I. Pigment Red177 and C.I. I. 1. a pigment dispersion step obtained by using a pigment dispersion in which a pigment mixture containing Pigment Red 242 is dispersed in a solvent; A mixing step of mixing the pigment dispersion obtained in step 1 and (C) a light or thermosetting material;

<< Process 1 >>
The pigment dispersion step of Step 1 is a step of obtaining a pigment dispersion by dispersing (A) a pigment containing PR177, PR242, and PR254 in (D) a solvent using (B) a pigment dispersant, The pigment dispersion is obtained by using the pigment dispersion 1 obtained by dispersing the pigment mixture (A1) containing PR177 and PR242 in the solvent (D1) using the pigment dispersant (B1). It is characterized by. The production method of the present invention can improve the dispersibility and dispersion stability of PR242 by simultaneously dispersing (co-kneading) PR177 and PR242.

  In this case, the pigment mixture (A1) containing PR177 and PR242 may be premixed with PR177 and PR242 and then dispersed in (D1) a solvent using (B1) a pigment dispersant, or not mixed. (D1) may be separately dispersed in the solvent. When added separately without mixing, it is preferable that PR177 and PR242 be added to the solvent (D1) and dispersed simultaneously from the viewpoint of obtaining good dispersibility and dispersion stability. Further, when PR177 and PR242 are mixed in advance, mixing can be performed by a known method without any particular limitation, and the degree of mixing is not particularly limited.

  PR254 and other pigments added as necessary may be mixed at the same time when PR177 and PR242 are mixed, and may be dispersed in addition to (D1) the solvent, or the pigment dispersion 1 containing PR177 and PR242. After preparing another pigment dispersion, it can be combined with the pigment dispersion 1 containing PR177 and PR242 to form a pigment dispersion. From the viewpoint of obtaining good pigment dispersibility and dispersion stability, these pigments are prepared separately from the pigment dispersion 1 and then combined with the pigment dispersion 1 containing PR177 and PR242. A pigment dispersion is preferred.

More specifically regarding the preferred step 1, the PR254 and other pigments include C.I. I. An example in which Pigment Yellow 150 (hereinafter sometimes referred to as PY 150) is used will be described.
First, pigment dispersion 1 is obtained by dispersing pigment mixture (A1) containing PR177 and PR244 in (D1) solvent using (B1) pigment dispersant. In addition, pigment dispersion 2 obtained by dispersing PR254 in (D2) solvent using (B2) pigment dispersant and (P3) PY150 in (D3) solvent using (B3) pigment dispersant Obtained pigment dispersion 3 is obtained. Next, the pigment dispersions 1 to 3 are mixed to obtain a pigment dispersion.

In the preparation of pigment dispersion 1, the total amount of PR177 and PR244 in the pigment mixture (A1) is preferably 60 to 90% by mass, more preferably 75 to 90% by mass, in the range where the co-kneading of PR177 and PR244 is not inhibited. In this range, for example, part of PR254 and PY150 can be dispersed in the solvent (D1) simultaneously with PR177 and PR244. A pigment dispersion obtained by simultaneously dispersing PR254 and PY150 in a solvent may be used.
Here, the (B1) to (B3) pigment dispersant and the (D1) to (D3) solvent may be appropriately selected from the above-mentioned (B) pigment dispersant and (D) solvent, and (B1) The (B3) pigment dispersant and the (D1) to (D3) solvent are preferably the same from the standpoint of ease of production.

  (A) A conventionally well-known stirring apparatus, a dispersion apparatus, and a dispersion method can be employ | adopted for dispersion | distribution of a pigment, and it does not restrict | limit in particular. Examples of the stirrer include a dissolver and a homogenizer. Examples of the dispersion method include bead mill dispersion, ultrasonic dispersion, and dispersion using an emulsifier. Examples of the dispersion apparatus include a kneader, an attritor, a roll mill, and a ball mill. , A bead mill, a sand mill using glass or zircon, a horizontal media disperser, a colloid mill, an ultrasonic disperser, and the like. Of these, dispersion by a bead mill is preferable. When dispersed by a bead mill, the particle size of the beads to be used is preferably about 0.1 to 3 mm, and after being dispersed for about 30 minutes to 2 hours with large beads having a particle size of about 1 to 3 mm, It is preferable to perform dispersion for about 1 to 10 hours, preferably 2 to 6 hours, with small beads having a diameter of about 0.1 to 1 mm because excellent dispersibility can be obtained. The material of the beads is not particularly limited, but inorganic materials such as zirconia and glass, and resin materials are preferably employed.

<< Process 2 >>
Step 2 is a mixing step in which the pigment dispersion obtained in Step 1 and (C) a light or thermosetting material are mixed. Mixing of the pigment dispersion and the (C) light or thermosetting material can be performed using a conventionally known stirrer and the like, and preferred examples of the stirrer include a dissolver and a homogenizer. For the purpose of sufficiently mixing, the mixing step can be performed by adding a solvent as necessary. The solvent may be the same as that described above as the (D) solvent.

[Color filter]
Next, the color filter of the present invention will be described.
The color filter of the present invention is characterized by having a colored layer formed using the above-described colored resin composition of the present invention.
Such a color filter of the present invention will be described with reference to the drawings. 1 and 2 are schematic sectional views showing examples of the color filter of the present invention. The color filter 10 of the present invention has a transparent substrate 1, a light shielding part 2 such as a black matrix (BM), and a colored layer 3 (R, G, B). In the example shown in FIG. In the example shown in FIG. 2, R, G, and B are separately applied to the portion surrounded by BM.

The colored layer used in the color filter of the present invention is not particularly limited as long as it is formed using the above-described colored resin composition of the present invention. Usually, the opening of the light shielding portion on the transparent substrate described later is used. Depending on the type of pigment formed in the part and contained in the colored resin composition, it is composed of three or more colored patterns such as red (R), green (G), and (B).
In addition, the arrangement of the colored layers is not particularly limited, and for example, a general arrangement such as a stripe type, a mosaic type, a triangle type, or a four-pixel arrangement type can be used. Moreover, the width | variety, area, etc. of a colored layer can be set arbitrarily.
The thickness of the colored layer is appropriately controlled by adjusting the coating method, solid content concentration, viscosity, and the like of the colored resin composition, but it is usually preferably in the range of 1 to 5 μm.

The colored layer can be formed, for example, by the following method.
First, the above-described colored resin composition of the present invention is applied onto a transparent substrate to be described later using a coating means such as a slit coating method, a spin coating method, a slit & spin coating method, and a wet coating film is formed.
Next, after drying the wet coating film using a hot plate, oven, vacuum dryer, etc., it is exposed to light through a mask having a predetermined pattern, and the alkali-soluble resin and the multifunctional monomer are exposed to light. It is made to polymerize and it is set as the coating film of a colored resin composition. Examples of the light source used for exposure include ultraviolet rays such as a low-pressure mercury lamp, a high-pressure mercury lamp, and a metal halide lamp, and an electron beam. The exposure amount is appropriately adjusted depending on the light source used, the thickness of the coating film, and the like.
Moreover, in order to promote a polymerization reaction after exposure, you may heat-process. The heating conditions are appropriately selected depending on the blending ratio of each component in the colored resin composition to be used, the thickness of the coating film, and the like.

Next, it develops using a developing solution, a coating film is formed with a desired pattern by melt | dissolving and removing an unexposed part. As the developer, a solution in which an alkali is dissolved in water or a water-soluble solvent is usually used. An appropriate amount of a surfactant or the like may be added to the alkaline solution. Further, a general method can be adopted as the developing method.
After the development treatment, the developer is usually washed and the cured coating film of the colored resin composition is dried to form a colored layer. In addition, you may heat-process in order to fully harden a coating film after image development processing. The heating conditions are not particularly limited and are appropriately selected depending on the application of the coating film.

The light shielding part in the color filter of the present invention is formed in a pattern on a transparent substrate to be described later, and can be the same as that used as a light shielding part in a general color filter.
The pattern shape of the light shielding portion is not particularly limited, and examples thereof include a stripe shape and a matrix shape. Examples of the light-shielding portion include those obtained by dispersing or dissolving a black pigment in a binder resin, and metal thin films such as chromium and chromium oxide. This metal thin film may be a CrO _x film (x is an arbitrary number) and a laminate of two Cr films, and a CrO _x film (x is an arbitrary number) with a reduced reflectance. , CrN _y films (y is an arbitrary number) and three layers of Cr films may be laminated.
When the light-shielding part is a material in which a black colorant is dispersed or dissolved in a binder resin, the method for forming the light-shielding part is not particularly limited as long as the light-shielding part can be patterned. For example, a photolithography method, a printing method, an ink jet method, or the like using a colored resin composition for a light shielding part can be given. The colored resin composition of the present invention can be suitably used for an ink jet method from the viewpoint of effectively utilizing features such as dispersibility and dispersion stability.

  In the above case, when a printing method or an inkjet method is used as a method for forming the light shielding portion, examples of the binder resin include polymethyl methacrylate resin, polyacrylate resin, polycarbonate resin, polyvinyl alcohol resin, polyvinyl pyrrolidone resin, hydroxy Examples include ethyl cellulose resin, carboxymethyl cellulose resin, polyvinyl chloride resin, melamine resin, phenol resin, alkyd resin, epoxy resin, polyurethane resin, polyester resin, maleic acid resin, polyamide resin, and the like.

  In the above case, when a photolithography method is used as a method for forming the light shielding portion, the binder resin may be, for example, an acrylate-based, methacrylate-based, polyvinyl cinnamate-based, or cyclized rubber-based reactive material. A colored resin having a vinyl group is used. In this case, a photopolymerization initiator may be added to the colored resin composition for a light-shielding part containing a black colorant and a colored resin, and further, a sensitizer, a coatability improver, and a development improvement as necessary. An agent, a crosslinking agent, a polymerization inhibitor, a plasticizer, a flame retardant, etc. may be added. In the present invention, the colored resin composition of the present invention having a black pigment such as carbon black or titanium black as a pigment may be used as the colored resin composition for a light shielding part.

  On the other hand, when the light shielding part is a metal thin film, the method for forming the light shielding part is not particularly limited as long as the light shielding part can be patterned, and for example, photolithography, vapor deposition using a mask. Law, printing method and the like.

  The thickness of the light shielding part is set to about 0.2 to 0.4 μm in the case of a metal thin film, and about 0.5 to 2 μm in the case where a black colorant is dispersed or dissolved in a binder resin. Is set.

(Transparent substrate)
The transparent substrate used in the color filter of the present invention is not particularly limited as long as it is a substrate transparent to visible light, and a transparent substrate used in a general color filter can be used. Specific examples include inflexible transparent rigid materials such as quartz glass, alkali-free glass, and synthetic quartz plates, or transparent transparent flexible materials such as transparent resin films and optical resin plates. .
Although the thickness of the said transparent substrate is not specifically limited, According to the use of the color filter of this invention, the thing of about 100 micrometers-1 mm can be used, for example.
The color filter of the present invention may be one in which, for example, an overcoat layer, a transparent electrode layer, an alignment film, a columnar spacer, or the like is formed in addition to the transparent substrate, the light shielding portion, and the colored layer. .

Next, the liquid crystal display device of the present invention will be described.
The liquid crystal display device of the present invention has the color filter of the present invention described above. The liquid crystal display device of the present invention can have a configuration generally known as a liquid crystal display device using a color filter. For example, the color filter, a counter substrate having a TFT array substrate, and the like, And a liquid crystal layer formed between the counter substrate and the counter substrate.

The driving method of the liquid crystal display device of the present invention is not particularly limited, and a driving method generally used for a liquid crystal display device can be employed. Examples of such a drive method include a TN method, an IPS method, an OCB method, and an MVA method. In the present invention, any of these methods can be preferably used.
Further, the counter substrate can be appropriately selected and used depending on the driving method of the liquid crystal display device of the present invention.
Furthermore, as the liquid crystal constituting the liquid crystal layer, various liquid crystals having different dielectric anisotropy and mixtures thereof can be used according to the driving method of the liquid crystal display device of the present invention.

As a method for forming the liquid crystal layer, a method generally used as a method for manufacturing a liquid crystal cell can be used, and examples thereof include a vacuum injection method and a liquid crystal dropping method.
In the vacuum injection method, for example, a liquid crystal cell is prepared in advance using a color filter and a counter substrate, and the liquid crystal is heated to obtain an isotropic liquid, and the liquid crystal is supplied to the liquid crystal cell using the capillary effect. The liquid crystal layer can be formed by injecting in this state and sealing with an adhesive. Thereafter, the sealed liquid crystal can be aligned by slowly cooling the liquid crystal cell to room temperature.
In the liquid crystal dropping method, for example, a sealant is applied to the periphery of the color filter, the color filter is heated to a temperature at which the liquid crystal becomes isotropic, and the liquid crystal is dropped in an isotropic liquid state using a dispenser or the like. Then, the color filter and the counter substrate are overlapped with each other under reduced pressure and bonded through a sealant, whereby a liquid crystal layer can be formed. Thereafter, the sealed liquid crystal can be aligned by slowly cooling the liquid crystal cell to room temperature.

EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by these examples.
(Evaluation methods)
1. Measurement of Shear Viscosity For the pigment dispersions obtained in each Example and Comparative Example, immediately after preparation of the pigment dispersion and after the heating acceleration test in which the pigment dispersion is placed in a sealed container and stored at 40 ° C. for 1 week The shear viscosity at a shear rate of 100 (1 / s) was measured using “MCR301 (model name)” manufactured by Nippon Siebel Hegner. For the pigment dispersions obtained in each Reference Example, the shear viscosity at shear rates of 100 (1 / s) and 1000 (1 / s) was measured in the same manner as described above, and the thixotropic index (TI value). Was calculated by shear viscosity (shear rate: 100 (1 / s)) / shear viscosity (shear rate: 1000 (1 / s)). The thixotropic index (TI value) is more stable as it is closer to 1, and it becomes unstable when it is larger than 1.
2. Measurement of Brightness and Contrast Colored resin compositions obtained in each of the examples, comparative examples and reference examples were placed on a non-alkali glass substrate (“NA35” manufactured by NH Techno Glass Co., Ltd.) using a spin coater. After coating, the pressure is reduced to 10 Pa or less at 50 ° C. using a vacuum dryer, heated at 200 ° C. for 5 minutes using a hot plate, and then heated at 240 ° C. for 40 minutes to a thickness of 2.5 μm. A red colored layer was formed.
The color and luminance of the obtained red colored layer were measured using a spectrophotometer (Olympus Co., Ltd.), and the contrast was measured using a contrast measuring device ("CT-1 (model number)" manufactured by Aisaka Electric Co., Ltd.). It was performed using. In the table, x and y are chromaticity, and Y indicates luminance.
3. Measurement of particle size distribution For the pigment dispersion obtained in each reference example, particle size distribution measurement was performed using a particle size distribution measuring apparatus ("Nanotrack UPA (model number)" manufactured by Nikkiso Co., Ltd.) which is a dynamic light diffusion method. The particle diameter was determined based on the volume average particle diameter (MV).

Example 1
(1) Preparation of Pigment Dispersion In a glass container, 70 parts by mass of (B) Azisper PB821 (manufactured by Ajinomoto Fine Techno Co., Ltd.) as a pigment dispersant and (D) diethylene glycol butyl ether acetate (hereinafter referred to as BCA) as a solvent. ) 830 parts by weight were added to obtain a solution. (A) As a pigment, 60 parts by mass of PR242, 20 parts by mass of PR177 and 20 parts by mass of PY150 are added, 2000 parts by mass of zirconia beads (2 mmφ) are added, and a paint shaker (manufactured by Asada Tekko Co., Ltd.) is added. And dispersion for 1 hour. Thereafter, 2 mmφ zirconia beads were removed, 2000 parts by mass of another zirconia beads (0.3 mmφ) were added, and dispersion was further performed for 15 hours to obtain a pigment dispersion 1 having pigments PR242, PR177, and PY150.
In addition, Pigment Dispersion 2 was obtained in the same manner as Pigment Dispersion 1, except that in the preparation of Pigment Dispersion 1, (A) 100 parts by mass of PR254 was used as the pigment. Pigment dispersion 1 and pigment dispersion 2 were mixed so that the pigment mass ratio was 50:50 (the content of PR254 in all pigments was 50% by mass) to obtain pigment dispersion A.

(2) Preparation of epoxy resin (thermosetting material) According to the description in Example 7 of JP-A-2007-72284, an epoxy group-containing polymer and a polyvalent carboxylic acid derivative are prepared, and the resin composition is prepared by the following formulation. Was prepared.
Epoxy group-containing polymer ¹⁾ : 2.87 parts by mass Polycarboxylic acid derivative ²⁾ : 2.68 parts by mass Epoxy group-containing compound ³⁾ : 2.08 parts by mass Thermal latent catalyst ⁴⁾ : 0.27 parts by mass Vinyl ether surfactant ⁵⁾ : 0.10 parts by mass Solvent ⁶⁾ : 80 parts by mass 1) Prepared according to Production Example 1 of JP-A-2007-72284.
2) Prepared according to Production Example 3 of JP-A-2007-72284.
3) “Epicoat 157S70 (trade name)” manufactured by Japan Epoxy Resin Co., Ltd. 4) “LC-1 (trade name)” manufactured by Nippon Oil & Fats Co., Ltd. 5) “LHP-90 (trade name)”: Enomoto Kasei Co., Ltd. Manufactured, containing polyvinyl isobutyl ether, SP value: 8.38, solid content: 50% by mass
6) Diethylene glycol monobutyl ether acetate (BCA)

(3) Preparation of colored resin composition The pigment dispersion obtained in (1) and the thermosetting material obtained in (2) are combined with the total solid content of the pigment, the pigment dispersant and the thermosetting material. The solvent BCA was added to the mixture so that the solid content was 20% by mass. This was put in a sealed container, and the composition obtained by stirring overnight using a magnetic stirrer and a stirrer was filtered using a PTFE surface blend filter (0.2 μm hole) to obtain a colored resin composition. It was.
Said measurement evaluation was performed about the obtained pigment dispersion and colored resin composition. The results are shown in Table 1.

Example 2
In Example 1, instead of the pigment dispersion A, among the pigments (A) in the pigment dispersion 1, the PR242 is changed from 60 parts by mass to 95 parts by mass, and the PR177 is changed from 40 parts by mass to 5 parts by mass. The pigment dispersion 2 and the pigment dispersion 3 were mixed so that the pigment mass ratio was 60:40 (the content of PR254 in all pigments was 60 mass%), and the pigment dispersion B A colored resin composition was obtained in the same manner as in Example 1 except that.
Said measurement evaluation was performed about the obtained pigment dispersion B and colored resin composition. The results are shown in Table 1.

Examples 3-5
In Example 2, Pigment Dispersion B, Pigment Dispersion 2 and Pigment Dispersion 3, Pigment Dispersions C to E obtained at a pigment mass ratio of 70:30, 80:20 and 90:10, respectively Except having carried out, it carried out similarly to Example 2, and obtained the colored resin composition of Examples 3-5.
The obtained pigment dispersions C to E and the colored resin composition were measured and evaluated as described above. The results are shown in Table 1.

１）粘度はせん断速度１００（１／ｓ）での値である。

1) The viscosity is a value at a shear rate of 100 (1 / s).

Comparative Example 1
In Example 1, instead of Pigment Dispersion 1, PR177, PR242 and PY150 were separately dispersed to prepare a pigment dispersion containing these pigments alone, and included in Pigment Dispersion 1 of Example 1 A colored resin composition was obtained in the same manner as in Example 1 except that the pigment dispersion 1 was prepared by mixing these pigment dispersions so as to have the same amount as the pigment to be obtained. Said measurement evaluation was performed about the obtained pigment dispersion and colored resin composition. The results are shown in Table 2.

Comparative Example 2
In Example 2, instead of Pigment Dispersion B, PR177, PR242 and PY150 were separately dispersed to prepare a pigment dispersion containing these pigments alone, and included in Pigment Dispersion 3 of Example 2 A colored resin composition was obtained in the same manner as in Example 2 except that the pigment dispersion 3 was changed to the pigment dispersion B ′ so that the amount of the pigment dispersion mixed was the same as that of the pigment to be obtained. Said measurement evaluation was performed about obtained pigment dispersion B 'and colored resin composition. The results are shown in Table 2.

Comparative Examples 3-5
In Comparative Example 2, Pigment Dispersion B ′, Pigment Dispersion 2 and Pigment Dispersion 3, and Pigment Dispersion C ′ obtained with pigment mass ratios of 70:30, 80:20 and 90:10, respectively. A colored resin composition of Comparative Examples 3 to 5 was obtained in the same manner as Comparative Example 2 except that E ′ was used.
The obtained pigment dispersions C ′ to E ′ and the colored resin composition were measured and evaluated as described above. The results are shown in Table 2.

１）粘度はせん断速度１００（１／ｓ）での値である。

1) The viscosity is a value at a shear rate of 100 (1 / s).

  As shown in Tables 1 and 2, Examples using pigment dispersions prepared by simultaneously dispersing (co-kneading) PR177 and PR242 are comparative examples composed of respective monochromatic dispersions. Compared to the examples, the initial viscosity was low, the storage stability was high, and the optical properties were excellent in both brightness and contrast. As a result, by dispersing PR177 and PR242 simultaneously (co-kneading), it is possible to improve dispersion stability, which is a problem of PR242, and to contribute to improvement of optical characteristics such as luminance and contrast. Indicated. A red coloring composition using a pigment dispersion obtained by simultaneously dispersing PR177 and PR242 of the present invention (co-kneaded) is excellent in viscosity stability and very useful for producing a color filter.

Reference Examples 1-6
In Example 1, PR177 and PR242 in the amounts shown in Table 3 were used as the pigment dispersion (A) pigment in Pigment Dispersion 1 and Pigment Dispersion 2 was not used. 6 colored resin composition was obtained. Said measurement evaluation was performed about the obtained pigment dispersion and colored resin composition. The results are shown in Table 3.

Reference Examples 7-12
In Reference Examples 1 to 6, PR177 and PR242 were separately dispersed to prepare a pigment dispersion containing these pigments alone, so that the same amount as the pigment contained in the pigment dispersion of Reference Example was obtained. Colored resin compositions of Reference Examples 7 to 12 were obtained in the same manner as Reference Examples 1 to 6, except that the pigment dispersion was a mixture of these pigment dispersions. Said measurement evaluation was performed about the obtained pigment dispersion and colored resin composition. The results are shown in Table 4.

  Reference Examples 1 to 6 obtained by simultaneously dispersing PR177 and PR242, and the same pigment as Reference Examples 1 to 6, PR177 and PR242 were separately mixed as a single pigment dispersion, and then mixed as a pigment dispersion. From the comparison with the used Reference Examples 7 to 12, the Reference Examples 1 to 6 have an effect that the TI value is close to 1, the viscosity is low, and the viscosity stability after the heating acceleration test at 40 ° C. is good. You can see that In particular, when the mass ratio of PR177 to PR242 is in the range of 70:30 to 5:95, the effect is remarkable. Even if only about 5% by mass of PR177 is added to PR242, the viscosity stability is large. Being able to produce an effect is unpredictable. In addition, the results of the contrasts in Reference Examples 1 to 6 are also excellent, and high contrast can be obtained by reducing the average particle diameter of the pigment in the pigment dispersion and improving the dispersion stability. It has been shown.

  The colored resin composition of the present invention achieves high brightness of the red colored layer of the color filter and improves the storage stability of the resin composition used for forming the colored layer, thereby improving the productivity of the color filter. Can be improved. Therefore, this colored resin composition is suitably used for forming a colored layer of a color filter.

It is the schematic which shows an example of the color filter of this invention. It is the schematic which shows another example of the color filter of this invention.

Explanation of symbols

1: transparent substrate 2: light shielding part 3: colored layer 10: color filter

Claims (7)

  A colored resin composition comprising (A) a pigment, (B) a pigment dispersant, and (C) a light or thermosetting material, wherein the (A) pigment is C.I. I. Pigment Red177, C.I. I. Pigment Red242, and C.I. I. Pigment Red 254, and C.I. relative to the total mass of the (A) pigment. I. Pigment Red254 content is 50% by mass or more and less than 100% by mass; I. Pigment Red177 and C.I. I. A colored resin composition obtained by using a pigment dispersion in which a pigment mixture containing Pigment Red242 is dispersed in a solvent.   5 to 75% by weight of C.I. I. Pigment Red177 and 25 to 95% by mass of C.I. I. The colored resin composition according to claim 1, which is a pigment mixture comprising Pigment Red242.   (B) The colored resin composition according to claim 1, wherein the pigment dispersant is a polyester polymer dispersant having a basic functional group. The manufacturing method of the colored resin composition which has the following processes 1 and 2.
Step 1. C. I. Pigment Red177, C.I. I. Pigment Red242, and C.I. I. Pigment Red254 is a pigment dispersion step in which (A) a pigment containing (P) Pigment Red254 is dispersed in (D) a solvent using (B) a pigment dispersant, and the pigment dispersion is C.I. I. Pigment Red177 and C.I. I. 1. Pigment dispersion step 2 obtained using a pigment dispersion in which a pigment mixture containing Pigment Red 242 is dispersed in a solvent. Mixing step of mixing the pigment dispersion obtained in step 1 and (C) light or thermosetting material   The color filter which has a colored layer formed using the colored resin composition in any one of Claims 1-3.   The color filter according to claim 5, wherein the colored layer is formed by an inkjet method.   A display device comprising the color filter according to claim 5.

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