JP2012088615A - Colored resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a color filter of high reliability having excellent brightness and contrast, clear and high-quality color characteristics, and better resistance than the conventional ones.SOLUTION: The colored resin composition for producing color filter pixels is easily obtained by using a specific coloring agent compound and mixing it with other binder resin, solvent, hardening agent or the like. The produced color filter has high quality with excellent color characteristics such as high contrast and also has high reliability with excellent heat resistance or the like.

Description

  The present invention relates to a colored resin composition for forming a blue pixel, a color filter formed using the same, a liquid crystal display device formed using the color filter, an image sensor (CCD, CMOS), an organic EL display, and the like The present invention relates to an electronic display device.

  For colorization of liquid crystal display elements such as liquid crystal displays (LCD) typified by notebook computers, liquid crystal televisions, mobile phones, etc., and image sensors (CCD, CMOS) used as input devices for digital cameras, color copiers, etc. A color filter is required. As a method for producing a color filter used in these liquid crystal display devices and solid-state image sensors, there are a dyeing method, an electrodeposition method, a printing method, a pigment dispersion method, and the like. In recent years, the pigment dispersion method has become the mainstream. As a patterning method, a photolithography method is typical, and a color filter is formed using a mixture of a photosensitive resin composition and a pigment dispersion. Recently, a method of forming a color filter by applying a colored ink directly on a substrate without using a mask by an ink jet printer is also performed.

  Improvements in color purity, saturation, brightness, and contrast, which are characteristics required for color filters, are particularly important. By improving the brightness, the amount of light of the backlight can be suppressed and the power consumption can be reduced, so this is an environmentally necessary technology. In order to improve the color purity of the color filter, it is necessary to increase the content of the color pigment or to select a pigment having a better spectral waveform. On the other hand, since it is necessary to increase the transmittance in order to improve the brightness, the pigment concentration must be reduced or the film thickness must be reduced. In order to make these contradictory properties compatible, a method of making fine particles of a pigment has been carried out, but there is a limit to the resistance and dispersion stability, and even if the brightness is improved, it is not possible to achieve both resistances. .

  As an approach for solving these problems, a color filter using a dye is being studied. If a dye is used, there is a merit that the contrast can be improved because the light purity can be suppressed because the color purity and lightness cannot be achieved by a pigment, and the particles are not particles. However, for display bodies that require long-term reliability such as televisions, light resistance and heat resistance are necessary, but in particular, blue dyes are much less resistant than pigments. For example, in Patent Documents 1 and 2 below, a color filter using a triphenylmethane compound is reported, but the triphenylmethane compound is extremely inferior in light resistance and heat resistance and is not at a practical level. Although phthalocyanine dyes are known to be excellent in resistance (Patent Document 3), their color characteristics are not blue, and since they are generally reddish cyan, a clear blue pixel cannot be formed. There is a need for a colored resin composition that includes a clear blue pixel and a highly durable color material that is highly reliable in a color filter, but is currently in practical use. Therefore, there is a need for a high-quality color filter that is vivid blue and excellent in durability as the next generation.

JP-A-8-94826 Japanese Patent Laid-Open No. 2002-14222 Japanese Patent Application Laid-Open No. 60-249102 JP 63-172772 A

  An object of the present invention is to provide a highly reliable color filter pixel having excellent heat resistance and high contrast.

  As a result of diligent research to solve the above problems, the present inventor has found that the above problems can be solved by using a colored resin composition containing a specific color material compound for the pixels of the color filter. It came to complete.

（式（１）においてＲ_１ａ〜Ｒ_６ａはそれぞれ独立に水素原子、Ｃ１−Ｃ３０のアルキル基、フェニル基またはベンジル基を表すが、少なくとも１つはＣ１−Ｃ３０のアルキル基である。Ｒ_７ａ〜Ｒ_２０ａは、それぞれ独立に水素原子、ハロゲン原子、Ｃ１−Ｃ６のアルキル基を表す。アニオン部はＣ１−Ｃ１０の高次ハロゲン化アルキルスルホネートであり、少なくとも一つのハロゲン原子Ｘを有する(ｎ＝１〜１０、１≦ｍ≦２ｎ＋１、Ｘはハロゲン原子のいずれでもよい。）、
（２）トリフルオロメタンスルホネートアニオンをアニオン部とするトリアリールメタン化合物を含む（１）に記載の着色樹脂組成物、
（３）更に金属フタロシアニン顔料を含む（１）又は（２）に記載の着色樹脂組成物、
（４）更に下記式（２）で示される色材化合物を含む（１）乃至（３）のいずれか一つに記載の着色樹脂組成物

（式（２）において、Ｒ_１ｂ〜Ｒ_４ｂはそれぞれ独立に水素原子、Ｃ１−Ｃ１２のアルキル基、アリール基を表す。Ｒ_５ｂ〜Ｒ_１０ｂは、それぞれ独立に水素原子、ハロゲン原子、Ｃ１−Ｃ１２のアルキル基、Ｃ１−Ｃ１２のアルコキシ基、ニトロ基、カルボキシル基、アルコキシカルボニル基を表す。Ｒ_１１ｂ〜Ｒ_１５ｂはそれぞれ独立に水素原子、Ｃ１−Ｃ１２のアルキル基、Ｃ１−Ｃ１２のアルコキシ基、ハロゲン原子、ニトロ基、フェノキシ基、カルボキシル基、アルコキシカルボニル基、スルホ基、スルファモイル基を表す。アニオン部Ｚ⁻はＣ１−Ｃ１０の高次ハロゲン化アルキル基を有するアルキルスルホニルイミドアニオン、アルキルスルホニルメチドアニオン、又はアルキルスルホネートアニオンを表す。）、
（５）（１）乃至(４)のいずれか一つに記載の着色樹脂組成物を用い、パターニングされてなるカラーフィルター用着色硬化膜、
（６）（５）に記載のカラーフィルター用着色硬化膜からなるカラーフィルター、
（７）（６）に記載のカラーフィルターを装着してなる表示装置、
（８）（７）に記載のカラーフィルターを装着してなる固体撮像素子、
に関する。 That is, the present invention
(1) A colored resin composition for a color filter containing a colorant compound represented by the following formula (1), a binder resin, a solvent, and a curing agent

(In Formula (1), R _{1a to} R _6a each independently represents a hydrogen atom, a C1-C30 alkyl group, a phenyl group, or a benzyl group, but at least one is a C1-C30 alkyl group. R _7a- R _20a each independently represents a hydrogen atom, a halogen atom, or a C1-C6 alkyl group, and the anion portion is a C1-C10 higher-order halogenated alkyl sulfonate having at least one halogen atom X (n = 1 -10, 1≤m≤2n + 1, X may be any halogen atom).
(2) The colored resin composition according to (1), including a triarylmethane compound having a trifluoromethanesulfonate anion as an anion part,
(3) The colored resin composition according to (1) or (2), further comprising a metal phthalocyanine pigment,
(4) The colored resin composition according to any one of (1) to (3), further including a colorant compound represented by the following formula (2):

(In Formula (2), R _{1b to} R _4b each independently represents a hydrogen atom, a C1-C12 alkyl group, or an aryl group. R _{5b to} R _10b each independently represent a hydrogen atom, a halogen atom, or C1-C12. R _{11b to} R _15b each independently represents a hydrogen atom, a C1-C12 alkyl group, a C1-C12 alkoxy group, a halogen atom, a C1-C12 alkoxy group, a nitro group, a carboxyl group, or an alkoxycarbonyl group. atom, a nitro group, a phenoxy group, a carboxyl group, an alkoxycarbonyl group, a sulfo group, a sulfamoyl group anion Z ^-. alkylsulfonyl imide anion having a higher halogenated alkyl group C1-C10, alkylsulfonyl methide anion Or represents an alkyl sulfonate anion).
(5) A colored cured film for a color filter, which is patterned using the colored resin composition according to any one of (1) to (4),
(6) A color filter comprising the colored cured film for a color filter according to (5),
(7) a display device comprising the color filter according to (6),
(8) A solid-state imaging device comprising the color filter according to (7),
About.

  The colored resin composition of the present invention can provide a blue pixel for a high-quality color filter having excellent heat resistance and high contrast.

  The colored resin composition of the present invention contains a binder resin, a solvent, a curing agent, and a specific colorant compound, and if necessary, a colorant compound such as other pigment or dye, a surfactant, and photopolymerization initiation. Various additives such as an agent, a thermosetting agent, a polymerization inhibitor, and an ultraviolet absorber can be contained, but are not limited to these, and can be used without particular limitation as components other than the specific color material compound. .

  The pixel manufacturing method using the colored resin composition of the present invention mainly includes a photolithography method and an inkjet method, and the former uses a photosensitive resin composition having excellent developability using a photopolymerization initiator. The latter does not necessarily require a photopolymerization initiator and a thermosetting resin composition is used.

The specific color material compound used in the present invention is represented by the formula (1). In R _{1a to} R _6a of the above formula (1), examples of the C1-C12 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a 1-methylpropyl group (s-butyl group), Isobutyl group, pentyl group, 1-ethylpropyl group, 1-methylbutyl group, cyclopentyl group, hexyl group, 1-methylpentyl group, 1-ethylbutyl group, cyclohexyl group, hydroxypropyl group, 2-sulfoethyl group, carboxyethyl Group, cyanoethyl group, methoxyethyl group, ethoxyethyl group, butoxyethyl group, trifluoromethyl group, pentafluoroethyl group, 2-heptyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, Tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, hepta Sil group, octadecyl group, nonadecyl group, aralkyl group, eicosyl group, heicosyl group, docosyl group, tricosyl group, tetracosyl group, pentacosyl group, hexacosyl group, heptacosyl group, octacosyl group, nonacosyl group, triacontyl group, isoheptyl group, isooctyl group , Isononyl group, isodecyl group, isondecyl group, isododecyl group, isotridecyl group, isotetradecyl group, isopentadecyl group, isohexadecyl group, isoheptadecyl group, isooctadecyl group, isononadecyl group, isoaralkyl group, isoeicosyl group, isohenicosyl group, Isodocosyl group, isotricosyl group, isotetracosyl group, isopentacosyl group, isohexacosyl group, isoheptacosyl group, isooctacosyl group, isononacosyl group, isotriacosyl group Tyl group, 1-methylhexyl group, 1-ethylheptyl group, 1-methylheptyl group, 1-cyclohexylethyl group, 1-heptyloctyl group, 2-methylcyclohexyl group, 3-methylcyclohexyl group, 4-methylcyclohexane Hexyl group, 2,6-dimethylcyclohexyl group, 2,4-dimethylcyclohexyl group, 3,5-dimethylcyclohexyl group, 2,5-dimethylcyclohexyl group, 2,3-dimethylcyclohexane Examples include a hexyl group, 3,3,5-trimethylcyclohexyl group, 4-t-butylcyclohexyl group, 2-ethylhexyl group, 1-adamantyl group, and 2-adamantyl group.

In R _{1a to} R _6a of the formula (1), the phenyl group or benzyl group may have a substituent, and examples of the substituent include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, and an isobutyl group. Group, (C1-C5) alkyl group such as t-butyl group, pentyl group, halogen atom such as fluorine atom, chlorine atom, bromine atom, iodine atom, sulfonic acid group, methoxy group, ethoxy group, propoxy group, butoxy group , (C1-C6) alkoxy groups such as t-butoxy group and hexyloxy group, hydroxy (C1-C5) alkyl groups such as hydroxyethyl group and hydroxypropyl group, methoxyethyl group, ethoxyethyl group, ethoxypropyl group, butoxy Hydroxy such as (C1-C5) alkoxy (C1-C5) alkyl group such as ethyl group and 2-hydroxyethoxy group (C1-C5) alkoxy group, a 2-methoxyethoxy group, 2-ethoxyethoxy group alkoxy (C1-C5) alkoxy group such as, 2-sulfoethyl, carboxyethyl group, cyanoethyl group and the like.

In R _{7a to} R _20a of the formula (1), examples of the C1-C6 alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a pentyl group, a cyclopentyl group, a hexyl group, and a cyclohexyl group. Examples include xyl group, hydroxypropyl group, 2-sulfoethyl group, carboxyethyl group, cyanoethyl group, methoxyethyl group, ethoxyethyl group, butoxyethyl group, trifluoromethyl group, and pentafluoroethyl group.

  As a halogen atom in Formula (1) and Formula (2), a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom are mentioned.

As R _<7a > -R < _20a > of Formula (1), a hydrogen atom, a chlorine atom, or an unsubstituted C1-C6 alkyl group is preferable.

The anion moiety in the formula (1) is C _n X _m H _{(2n + 1-m)} SO ₃ ⁻ (wherein the carbon number n is 1 to 10, the halogen atom number m is 1 ≦ m ≦ 2n + 1, a hydrogen atom The number is 2n + 1-m), an alkylsulfonate anion having a C1-C10 higher-order halogenated alkyl group, wherein the alkyl group has at least one halogen atom X, where X is a fluorine atom, chlorine An atom, a bromine atom, and an iodine atom are mentioned, and a fluorine atom is particularly preferable. As a perfluoroalkylsulfonate anion which is an anion part, for example, nonafluorobutanesulfonate anion and trifluoromethanesulfonate anion are preferable, and trifluoromethanesulfonate anion is particularly preferable.

表１中、置換基Ｒについて、Ｍｅはメチル基、Ｅｔはエチル基、ｎ−Ｂｕはノルマルブチル基、ｉ−Ｐｒはイソプロピル基、ｉ−Ｂｕはイソブチル基、ｉ−Ｐｅｎはイソペンチル基、ｉ−Ｈｅｐはイソヘプチル基、ｔ−Ｂｕはターシャリーブチル基、ＣＨはシクロヘキシル基、ＭｅＣＨはメチルシクロヘキシル基、Ｐｈはフェニル基をそれぞれ表す。 Although the specific example of the color material compound represented by General formula (1) is shown in Table 1, this invention is not limited to these. Further, the anion portion in Table 1 is a trifluoromethanesulfonate anion, shown for substituted alkyl groups R _1a to R _20a cation portion.
Table 1

In Table 1, for substituent R, Me is a methyl group, Et is an ethyl group, n-Bu is a normal butyl group, i-Pr is an isopropyl group, i-Bu is an isobutyl group, i-Pen is an isopentyl group, i-Pu Hep represents an isoheptyl group, t-Bu represents a tertiary butyl group, CH represents a cyclohexyl group, MeCH represents a methylcyclohexyl group, and Ph represents a phenyl group.

In the present invention, in the colorant compound represented by the formula (2) that can be used in combination with the compound of the formula (1), R _{1b to} R _4b each independently represent a hydrogen atom, a C1-C12 alkyl group, or an aryl group. R _{5b to} R _10b each independently represent a hydrogen atom, a halogen atom, a C1-C12 alkyl group, a C1-C12 alkoxy group, a nitro group, a carboxyl group, or an alkoxycarbonyl group. R11b to R15b each independently represents a hydrogen atom, a C1-C12 alkyl group, a C1-C12 alkoxy group, a halogen atom, a nitro group, a phenoxy group, a carboxyl group, an alkoxycarbonyl group, a sulfo group, or a sulfamoyl group. Anion Z ^- is an alkyl sulfonyl methide anion, alkylsulfonyl imide anion or alkyl sulfonate anion having higher halogenated alkyl C1-C10.

  Examples of the C1-C12 alkyl group of the formula (2) include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, a t-butyl group, and an iso-butyl group. Group, n-pentyl group, n-hexyl group, n-octyl group, 2-ethylhexyl group, cyclohexyl group and the like. These alkyl groups may have a substituent. Examples of the substituent include a hydroxyethyl group, a hydroxypropyl group, a hydroxybutyl group, a 2-sulfoethyl group, a carboxyethyl group, a cyanoethyl group, a methoxyethyl group, Examples thereof include an ethoxyethyl group, a butoxyethyl group, a trifluoromethyl group, a pentafluoroethyl group, a carbamoyl group, and a carboxyl group.

  Examples of the alkoxy group of the formula (2) include an alkoxy group having the same C1-C12 alkyl group as the above alkyl group, and also an alkoxycarbonyl group having the same C1-C12 alkyl group. Groups.

  Examples of the aryl group of the formula (2) include aromatic hydrocarbon residues such as phenyl group, naphthyl group, anthryl group, phenanthryl group, pyrenyl group, benzopyrenyl group; pyridyl group, pyrazyl group, pyrimidyl group, quinolyl group, An aromatic heterocyclic residue such as an isoquinolyl group, a pyrrolyl group, an indolenyl group, an imidazolyl group, a carbazolyl group, a thienyl group, and a furyl group. These aryl groups may have a substituent, and examples of the substituent include an alkyl group, an alkoxy group, a halogen atom, a sulfo group, a carboxyl group, an alkoxycarbonyl group, a carbamoyl group, and a cyano group.

In the colored resin composition of the present invention, the anion part Z ⁻ of the formula (2) represents a sulfonylmethide anion, a sulfonylimide anion or a perfluoroalkylsulfonate anion having a C1-10 higher-order halogenated alkyl group, Specific examples thereof include bistrifluoromethanesulfonylimide anion, tristrifluoromethanesulfonylmethide anion, trifluoromethylsulfonate anion, and nonafluorobutylsulfonate anion. Tristrifluoromethanesulfonylmethide anion is particularly preferable.

  Specific examples of the colorant compound represented by the formula (2) are shown in the following Table 2-1 and Table 2-2, but the present invention is not limited thereto.

Table 2-1.

Table 2-2

  The colorant compound used in the colored resin composition of the present invention can be obtained, for example, by a known synthesis method described in Yutaka Hosoda "Theoretical Manufacturing Dye Chemistry" (pages 373-375) issued by Gihodo Co., Ltd. It is also possible to synthesize by purchasing a commercially available product in which the anion moiety of formula (1) and formula (2) is a chlorine anion and adding a corresponding salt or acid to perform salt exchange.

  When synthesizing the colorant compound in the present invention by salt exchange, for example, the colorant compound in which the anion part of the formula (1) and the formula (2) is a chlorine anion is used as a reaction solvent (for example, water, methanol, ethanol, Examples include water-soluble polar solvents such as isopropanol, acetone, N, N-dimethylformamide (hereinafter abbreviated as DMF), N-methyl-2-pyrrolidone (hereinafter abbreviated as NMP), and these solvents are used alone or in combination. It is easily obtained by adding about 0.5 to 3 equivalents of the corresponding salt or acid, stirring at a predetermined temperature (for example, 0 to 100 ° C.), and collecting the precipitated crystals by filtration. .

  It is represented by the above formula (1) contained in the total solid content of the colored resin composition of the present invention (referring to the total amount of solid content consisting of a colorant compound, a binder resin, a curing agent, etc., which is also used synonymously hereinafter). The content of the coloring material compound is preferably 0.1 to 60 parts by mass, more preferably 3 to 30 parts by mass. When the content is larger than this range, problems of precipitation and aggregation occur, or the adhesiveness with the substrate is lowered due to insufficient curing. When the content is small, there is no major problem, but there is a tendency that sufficient color purity cannot be obtained as color characteristics.

  When the solubility of the colorant compound represented by the formula (1) in the colored resin composition is low, it is dispersed using a dispersant, a dispersion aid or the like in the same manner as a pigment which is an optional component described later. May be. Two or more colorant compounds represented by the formula (1) may be mixed or used alone, but other dyes or pigments may be mixed. In addition, since this invention is related with a blue pixel, it is desirable to mix with a well-known blue dye, violet dye, or a blue pigment, a violet pigment.

  The binder resin used in the present invention functions as a dispersant and a dispersion aid because of dispersion stability at the time of pigment dispersion. On the other hand, as a design of a photolithography method, in a development processing step at the time of manufacturing a color filter. It is desirable that it is soluble in the alkaline developer to be used, and further it has sufficient curing characteristics with a photopolymerization initiator, a photopolymerizable monomer, etc. in order to form a good fine pattern. The obtained pigment-dispersed resin composition must have good compatibility with constituent materials such as a photopolymerization initiator, a photopolymerizable monomer, and a pigment dispersion, and be stable so as not to cause precipitation or aggregation. In the case of the inkjet method, alkali solubility is not particularly necessary, and therefore a resin having good compatibility with other colorant compounds and additives may be selected.

  As the binder resin, known resins can be used, but more preferably, one or more of the following carboxyl groups, ethylenically unsaturated monomers having a hydroxyl group, or other copolymerizable aromatic hydrocarbon groups, A copolymer such as an ethylenically unsaturated monomer having an aliphatic hydrocarbon group is desirable. In addition, those having an epoxy group at the side chain or terminal, and epoxy acrylate resins to which acrylate is added can also be used. These monomers may be used alone or in combination of two or more.

  Examples of the carboxyl group-containing unsaturated monomer that can be used in the present invention include unsaturated monocarboxylic acids such as acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, ethacrylic acid, and cinnamic acid; maleic acid, anhydrous Unsaturated dicarboxylic acids (anhydrides) such as maleic acid, fumaric acid, itaconic acid, itaconic anhydride, citraconic acid, citraconic anhydride, mesaconic acid; trivalent or higher unsaturated polycarboxylic acids (anhydrides); Examples include 2- (meth) acryloyloxyethyl hexahydrophthalic acid, 2-methacryloyloxyethyl 2-hydroxypropyl phthalate, 2-acryloyloxyethyl 2-hydroxyethyl phthalic acid, and the like. These ethylenically unsaturated monomers having a carboxyl group can be used alone or in admixture of two or more.

  Examples of the hydroxyl group-containing unsaturated monomer that can be used in the present invention include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, and 4-hydroxybutyl (meth). Acrylate, 3-hydroxybutyl (meth) acrylate, 5-hydroxypentyl (meth) acrylate, 4-hydroxypentyl (meth) acrylate, 3-hydroxypentyl (meth) acrylate, 6-hydroxyhexyl (meth) acrylate, 5-hydroxy Hexyl (meth) acrylate, 4-hydroxyhexyl (meth) acrylate, 5-hydroxy-3-methyl-pentyl (meth) acrylate, cyclohexane-1,4-dimethanol-mono (meth) acrylate, 2 Hydroxyl-terminated polyalkylene glycols such as (2-hydroxyethyloxy) ethyl (meth) acrylate, glycerin monomethacrylate, polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, poly (ethylene glycol-propylene glycol) monomethacrylate Examples include mono (meth) acrylate. These ethylenically unsaturated monomers having a hydroxyl group can be used alone or in admixture of two or more.

  Examples of the other unsaturated monomer include styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, o-chlorostyrene, m-chlorostyrene, p-chlorostyrene, Aromatic vinyl compounds such as p-methoxystyrene; methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, i-propyl (meth) acrylate, n-butyl (meth) acrylate, i-butyl (Meth) acrylate, sec-butyl (meth) acrylate, t-butyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, benzyl (meth) acrylate, paracumylphenoxyethylene glycol (meth) acrylate, 2-hydroxy- 3-phenoxypropyl Unsaturated carboxylic acid esters such as (meth) acrylate, o-phenylphenol glycidyl ether (meth) acrylate, o-phenylphenol (meth) acrylate hydroxyethylated product, phenoxyethyl (meth) acrylate; cyclopentyl (meth) acrylate, cyclohexyl ( (Meth) acrylate, trimethylcyclohexyl (meth) acrylate, norbornyl (meth) acrylate, norbornylmethyl (meth) acrylate, phenylnorbornyl (meth) acrylate, cyanonorbornyl (meth) acrylate, isobornyl (meth) acrylate, bornyl (Meth) acrylate, menthyl (meth) acrylate, fentyl (meth) acrylate, adamantyl (meth) acrylate, dimethyladamantyl (Meth) acrylate, tricyclo [5.2.1.02,6] dec-8-yl = (meth) acrylate, tricyclo [5.2.1.02,6] dec-4-methyl = (meth) acrylate, cyclodecyl (meth) acrylate, 2 -Alicyclic skeletons such as (meth) acryloyloxyethyl hexahydrophthalic acid and t-butylcyclohexyl (meth) acrylate; polyethylene glycol mono (meth) acrylate, polypropylene glycol mono (meth) acrylate, poly (ethylene glycol-propylene Glycol) monohydroxyl-terminated polyalkylene glycol mono (meth) acrylates such as monomethacrylate; methoxypolyethylene glycol monomethacrylate, lauroxypolyethyleneglycol mono (meth) acrylate, octoxypolyethyleneglycol poly Alkyl-terminated polyalkylene glycol mono (meth) acrylates such as propylene glycol mono (meth) acrylate, nonylphenoxypolyethylene glycol monoacrylate, nonylphenoxypolypropylene glycol monoacrylate, allyloxypolyethylene glycol-polypropylene glycol mono (meth) acrylate; Unsaturated carboxylic acid aminoalkyl esters such as aminoethyl acrylate, 2-aminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate; glycidyl acrylate, glycidyl methacrylate, 3,4-epoxybutyl (meth) acrylate, (3,4-epoxycyclohex ) Unsaturated carboxylic acid glycidyl esters such as methyl (meth) acrylate and 4-hydroxybutyl (meth) acrylate glycidyl ether; vinyl carboxylic acid esters such as vinyl acetate, vinyl propionate, vinyl butyrate and vinyl benzoate; vinyl Unsaturated ethers such as methyl ether, vinyl ethyl ether, allyl glycidyl ether, methallyl glycidyl ether; vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile, vinylidene cyanide; acrylamide, methacrylamide, α- Chloroacrylamide, N-phenylmaleimide, N-cyclohexylmaleimide, N- (meth) acryloylphthalimide, N- (2-hydroxyethyl) acrylamide, N- (2-hydroxy Til) unsaturated amides or unsaturated imides such as methacrylamide and maleimide; aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; polystyrene, polymethyl acrylate, polymethyl methacrylate, poly n-butyl acrylate, Examples thereof include macromonomers having a monoacryloyl group or a monomethacryloyl group at the end of a polymer molecular chain such as poly n-butyl methacrylate and polysilicone. These other unsaturated monomers can be used alone or in admixture of two or more.

  A polymer in which an unsaturated double bond is further introduced into the side chain of the copolymer is also useful. For example, an acrylate having an alcoholic hydroxyl group such as hydroxyethyl acrylate in the maleic anhydride portion of a copolymer with styrene, vinylphenol, acrylic acid, acrylic ester, acrylamide, or the like copolymerizable with maleic anhydride Acrylic acid is added to the hydroxyl group of a compound obtained by reacting an acrylate having an epoxy group, such as glycidyl methacrylate, and half-esterified, and a copolymer of acrylic acid, an acrylic ester and an acrylate having an alcoholic hydroxyl group such as hydroxyethyl acrylate. Examples thereof include reacted compounds. In addition, urethane resin, polyamide, polyimide resin, polyester resin, commercially available ACA-200M (manufactured by Daicel), ORGA-3060 (manufactured by Osaka Organic Chemical), AX3-BNX02 (manufactured by Nippon Shokubai), UXE-3024 (Nippon Kayaku) Made), UXE-3000 (made by Nippon Kayaku), ZGA-287H (made by Nippon Kayaku), TCR-1338H (made by Nippon Kayaku), ZXR-1722H (made by Nippon Kayaku), ZFR-1401H (Nippon Kayaku) And ZCR-1642 (manufactured by Nippon Kayaku) can also be used.

  Generally, when dispersing a pigment, a dispersant and a dispersion aid are used. There are pigment-based dispersants, resin-based dispersants, surfactants, and the like having good adsorptivity to pigments. For example, as a pigment-based dispersant, a method of mixing a sulfonated pigment or a metal salt thereof as described in Patent Document 4 with a pigment, a method of mixing a substituted aminomethyl derivative, and the like are known as known techniques. . Some resin dispersants are nonpolar nonionic, but polymer resins having an acid value, an amine value, etc. that give good pigment adsorption are common, such as acrylic resins, polyurethane resins, and polycarboxylic acids. , Polyamide resin, polyester resin and the like. Specific examples thereof include ED211 (manufactured by Enomoto Kasei), Ajisper PB821 (manufactured by Ajinomoto Fine Techno), Solsperse 71000 (manufactured by Avicia), and the like.

  When producing the binder resin (copolymer) used in the present invention, a polymerization initiator is used. Specific examples of the polymerization initiator used when synthesizing the copolymer are, for example, α, α′-azobis (isobutyronitrile), 2,2′-azobis (2-methylbutyronitrile). ), T-butyl peroctoate, di-t-butyl peroxide benzoylmethyl ethyl ketone peroxide, and the like. The usage-amount of a polymerization initiator is 0.01-25 mass parts with respect to the sum total of all the monomers used for the synthesis | combination of a copolymer. In the case of synthesizing a copolymer, it is preferable to use an organic solvent described below, but a solvent having sufficient dissolving power for the monofunctional monomer and polymerization initiator used is used. The reaction temperature when synthesizing the copolymer is preferably 50 to 120 ° C., particularly preferably 80 to 100 ° C. Moreover, it is preferable that reaction time is 1 to 60 hours, More preferably, it is 3 to 20 hours. The preferred acid value of the copolymer is 10 to 300 (mgKOH / g), and the preferred hydroxyl value is 10 to 200 (mgKOH / g). When the acid value or hydroxyl value is 10 or less, developability is lowered. As for the weight average molecular weight (Mw) of a copolymer, 2000-400000 are preferable and 3000-100000 are more preferable. When the weight average molecular weight is 2000 or less, or 400000 or more, sensitivity, developability and the like are lowered.

  In this invention, the said binder resin can be used individually or in mixture of 2 or more types. Content of binder resin in this invention is 0.5-99 mass parts normally with respect to 100 mass parts of total solids of a colored resin composition, Preferably it is 5-50 mass parts. In this case, if the content of the binder resin is less than 0.5 parts by mass, the alkali developability may be lowered, or problems such as scumming or film residue in areas other than the area where pixels are formed may occur. is there.

  Examples of the curing agent used in the present invention include a photopolymerization monomer in the case of radical polymerization, an epoxy resin in the case of ion curing, and a melamine curing agent. Specific examples thereof include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate, and triethyleneglycol. (Meth) acrylate, tetraethylene glycol (meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol di (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol hexa (Meth) acrylate, glycerol (meth) acrylate, bisphenol-A type epoxy di (meth) acrylate, bisphenol-F type epoxy Di (meth) acrylate, bisphenol-fluorene type epoxy di (meth) acrylate, ethoxylated trimethylolpropane tri (meth) acrylate, propoxylated trimethylolpropane tri (meth) acrylate, ethoxylated glycerin tri (meth) acrylate, ethoxylated isocyanuric Acid tri (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate, ethoxylated pentaerythritol tetra (meth) acrylate, 9,9-bis [4- (2-acryloyloxyethoxy) phenyl] fluorene, Kayrad RP-1040 ( Nippon Kayaku), Kayrad DPCA-30 (Nippon Kayaku), Kayrad DPEA-12 (Nippon Kayaku), UA-33H (Shin Nakamura Chemical), UA-53H (Shin Nakamura Chemical), M- 8 60 (manufactured by Toagosei); TEMPIC (manufactured by Sakai Chemical), TMMP (manufactured by Sakai Chemical), PEMP (manufactured by Sakai Chemical), and DPMP (manufactured by Sakai Chemical); NC-6000, NC-3000, EOCN-1020, XD-1000, EPPN-501H, BREN-S, NC-7300L, Daicel Chemical's Celoxite 2021P, EHPE3150, Cyclomer M100, Epolide PB3600, Japan Epoxy Resin's Epicoat 828, Epicoat YX8000, Epicoat YX4000, Silaace S510 (Chisso), TEPIC (Nissan Chemical Industries), etc .; Examples of melamine curing agents include methylolated melamine and Mw-30 (Sanwa Chemical). These can be used alone or in admixture of two or more. These content is 1-80 mass parts with respect to 100 mass parts of total solids of a colored resin composition, Preferably it is 5-30 mass parts.

  The colorant that can be used in combination with the colored resin composition of the present invention preferably has a spectral characteristic suitable for a color filter, and can be appropriately selected from dyes, organic pigments, and inorganic pigments. It can also be used in combination of more than one species. These content is 0-60 mass parts with respect to 100 mass parts of total solid of a colored resin composition, Preferably it is 5-30 mass parts. These various pigments and dyes are shown below.

  The organic pigment that can be used in the present invention is not particularly limited. For example, anthraquinone, phthalocyanine, triphenylmethane, benzimidazolone, quinacridone, azochelate, azo, isoindoline, and isoindolinone , Pyranthrone, indanthrone, anthrapyrimidine, dibromoanthanthrone, flavanthrone, perylene, perinone, quinophthalone, thioindigo, dioxazine, quinacridone, xanthene, and other pigments; acidic dyes, basic Examples include lake pigments and dyed lake pigments obtained by insolubilizing dyes, direct dyes, and the like with the respective precipitation agents. More specifically, the color index, for example, Pigment Blue 1, 1: 2, 9, 14, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 17, 19 25, 27, 28, 29, 33, 35, 36, 56, 56: 1, 60, 61, 61: 1, 62, 63, 66, 67, 68, 71, 72, 73, 74, 75, 76 78, 79; Pigment Violet 1, 1: 1, 2, 2: 2, 3, 3: 1, 3: 3, 5, 5: 1, 14, 15, 16, 19, 23, 25, 27, 29 31, 32, 37, 39, 42, 44, 47, 49, 50; Pigment Violet 3, 4, 27, 39, and the like. In particular, metal phthalocyanine pigments such as CI Pigment Blue 15: 6 and CI Pigment Violet 23 are preferable due to good hue and resistance.

  The inorganic pigment that can be used in combination with the present invention is not particularly limited. For example, composite metal oxide pigments, carbon black, black low-order titanium oxide, titanium oxide, barium sulfate, zinc white, lead sulfate, yellow lead, red rose, ultramarine blue , Bitumen, chromium oxide, antimony white, iron black, red lead, zinc sulfide, cadmium yellow, cadmium red, zinc, manganese purple, cobalt purple, barium sulfate, magnesium carbonate and other metal oxides, metal sulfides, sulfates, Metal hydroxide, metal carbonate, etc. are mentioned.

  The dye that can be used in the present invention is not particularly limited, and examples thereof include acidic dyes, basic dyes, direct dyes, sulfur dyes, vat dyes, naphthol dyes, reactive dyes, and disperse dyes. Among them, any dye that is soluble in an organic solvent may be used, but even a dye that is insoluble in an organic solvent can be appropriately used by forming a dispersion.

  In the above, dyes that are insoluble in organic solvents are well-known formulations. For example, in the case of acidic dyes or basic dyes, organic amine compounds (for example, n-propylamine, ethylhexylpropionate amine, etc.) are reacted to form amine salt dyes. It is known to modify or to make a dye having a sulfonamide group by reacting the sulfonic acid group with the same organic amine compound. These amine-modified dyes can also be used in the colored resin composition of the present invention. The specific dye is a color index, for example, Solvent Blue 2, 3, 4, 5, 6, 23, 35, 36, 37, 38, 43, 48, 58, 59, 67, 70, 78, 98, 102, 104; Basic Blue 7; Acid Blue 80, 83, 90; Examples of violet dyes include Solvent Violet 8, 9; Violet 4, 5, 14; Basic Violet 10 and the like.

  As the photopolymerization initiator added to the colored resin of the present invention used in the photographic method, those having sufficient sensitivity to ultraviolet rays emitted from an ultra-high pressure mercury lamp generally used as an exposure light source are preferable, and radical polymerization property Photo-radical initiators, ion-curing photo-acid generators or photo-base generators. In photopolymerization, a component of a polymerization accelerator called a sensitizer that can be cured with less exposure energy can be used in combination. The photopolymerization initiator that can be used is not particularly limited. Specific examples include benzyl, benzoin ether, benzoin butyl ether, benzoin propyl ether, benzophenone, 3,3′-dimethyl-4-methoxybenzophenone, benzoylbenzoic acid, and benzoylbenzoic acid. Acid esterified product, 4-benzoyl-4′-methyldiphenyl sulfide, benzyldimethyl ketal, 2-butoxyethyl-4-methylaminobenzoate, chlorothioxanthone, methylthioxanthone, ethylthioxanthone, isopropylthioxanthone, dimethylthioxanthone, diethylthioxanthone, diisopropyl Thioxanthone, dimethylaminomethylbenzoate, 1- (4-dodecylphenyl) -2-hydroxy-2-methylpropan-1-one 1-hydroxycyclohexyl phenyl ketone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, methylbenzoyl formate 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,2,4-bis (Trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-s-triazine, 2,4,6-tris (trichloromethyl) -1,3,5-s-triazine, 2,4- Bis (tribromomethyl) -6- (4′-methoxyphenyl) -1,3,5-s-triazine, 2,4,6-tris (tribromomethyl) 1,3,5-s-triazine, 2,4-bis (trichloromethyl) -6- (1,3-benzodioxolan-5-yl) -1,3,5-s-triazine, benzophenone, benzoylbenzoic acid 1- (4-phenylsulfanylphenyl) butane-1,2-dione-2-oxime-O-benzoate, 1- (4-methylsulfanylphenyl) butane-1,2-dione-2-oxime-O— Acetate, 1- (4-methylsulfanylphenyl) butan-1-oneoxime-O-acetate, 4,4′-bis (diethylamino) benzophenone, P-dimethylaminobenzoic acid isoamyl ester, P-dimethylaminobenzoic acid ethyl ester, 2,2′-bis (O-chlorophenyl) -4,4 ′, 5,5′-tetraphenyl-1,2′-biimi Dazole, diazonaphthoquinone-based initiator, and commercially available Kayacure DMBI, Kayacure BDK, Kayacure BP-100, Kayacure BMBI, Kayacure DETX-S, Kayacure JETX, Kayacure EPA (all manufactured by Nippon Kayaku), Darocure 1173, Darocure 1116 ( Irke Cure 907, Irgacure 369 (Ciba Specialty Chemicals), Irgacure 379EG (Ciba Specialty Chemicals), Irgacure OXE-01 (Ciba Specialty Chemicals), Iruga Cure OXE-02 (Ciba Specialty Chemicals), Irgacure PAG103 (Ciba Specialty Chemicals), TME-Triazine (Three Chemical Co.), biimidazole (Kurogane Kasei), STR-110, STR-1 (manufactured by less Bae Chemicals any), and the like.

  In the case of a thermosetting resin composition used in an inkjet method or the like, a thermal polymerization initiator is generally used, but a photopolymerization initiator may be used in combination as necessary. Examples of the thermal polymerization initiator include azo compounds and organic peroxides, such as 2,2′-azobisisobutyronitrile, 2,2′-azobis (2,4-dimethylvaleronitrile), Examples include 2,2′-azobis (2-methylbutyronitrile), di-t-butyl peroxide, dibenzoyl peroxide, cumylperoxyneodecanoate, and the like.

  These polymerization initiators can be used alone or in combination of two or more as required. These contents are 0.5 to 50 parts by mass, preferably 1 to 25 parts by mass when the total solid content of the colored resinous composition is 100 parts by mass.

  The organic solvent used in the present invention has sufficient dissolving power with respect to the binder resin, photopolymerizable monomer, photopolymerization initiator, and the like, which are components of the colored resin composition, and is a monofunctional compound used for the synthesis of the binder resin. Those having sufficient dissolving power for monomers, polymerization initiators and the like can be used. Moreover, what can maintain dispersion stability can also be used when preparing a pigment dispersion.

  The organic solvent used in the present invention is not particularly limited as long as it can be used. Specific examples include benzenes such as benzene, toluene and xylene; cellosolves such as methyl cellosolve, ethyl cellosolve and butyl cellosolve; methyl cellosolve acetate. Cellosolve acetates such as ethyl cellosolve acetate and butyl cellosolve acetate; propylene glycol monoalkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate and propylene glycol monobutyl ether acetate; methyl methoxypropionate, methoxypropion Propionates such as ethyl acrylate, methyl ethoxypropionate, ethyl ethoxypropionate; methyl lactate, lactic acid Lactic acid esters such as chill and butyl lactate; Diethylene glycols such as diethylene glycol monomethyl ether and diethylene glycol monoethyl ether; Acetic esters such as methyl acetate, ethyl acetate and butyl acetate; Ethers such as dimethyl ether, diethyl ether, tetrahydrofuran and dioxane; Examples include ketones such as acetone, methyl ethyl ketone, methyl butyl ketone, and cyclohexanone; alcohols such as methanol, ethanol, butanol, isopropyl alcohol, and benzyl alcohol.

  You may use these individually or in combination of 2 or more types. Moreover, 40-10000 mass parts is preferable with respect to 100 mass parts of total solids of a colored resin composition, and, as for the usage-amount of an organic solvent, 100-1000 mass parts is more preferable.

  The colored resin composition of the present invention is produced by mixing and stirring the binder resin, curing agent, photopolymerization initiator, specific colorant compound, organic solvent, and the like with a dissolver, a homomixer, or the like. In addition, other pigments and dyes can be added as necessary, but if the pigment or dye has low solubility, a dispersion is obtained by a dispersing machine such as a paint shaker using an appropriate dispersant, In addition to the colored resin composition, it is mixed.

  If necessary, the colored resin composition of the present invention may further contain various additives such as fillers, surfactants, thermal polymerization inhibitors, adhesion promoters, antioxidants, ultraviolet absorbers, anti-aggregation agents, and the like. Can be added. In addition, the colored resin composition of the present invention can be microfiltered with a filter or the like in order to remove foreign matters after the preparation.

  Next, a method for preparing the cured product from the colored resin composition of the present invention will be described. First, the colored resin composition of the present invention is formed on a substrate such as a glass substrate or a silicon substrate by a method such as a spin coating method, a roll coating method, a slit and spin method, a die coating method, or a bar coating method. It is applied so as to be 1 to 20 μm, preferably 0.5 to 5 μm, and if necessary, in a vacuum chamber, under drying conditions, at a temperature of 23 to 150 ° C. for 1 to 60 minutes, more preferably at a temperature of 60 to The film is dried under reduced pressure at 120 ° C. for 1 to 10 minutes, and further pre-baked with a hot plate or a clean oven to form a film. Next, radiation (for example, electron beam, ultraviolet ray, preferably ultraviolet ray) is irradiated through a predetermined mask pattern by a general photolithography method, and development is performed with a surfactant aqueous solution, an alkaline aqueous solution, or a mixed aqueous solution of a surfactant and an alkaline agent. To do. Examples of the development method include a dipping method, a spray method, a shower method, a paddle method, and an ultrasonic development method, and any of these methods may be combined. After removing the unirradiated part by development and rinsing with water, the post-bake treatment and treatment are performed at a temperature of 130 to 300 ° C. for 1 to 120 minutes, more preferably at a temperature of 150 to 250 ° C. for 1 to 30 minutes. To obtain a pixel comprising the colored cured film of the present invention.

  In the above, polyoxyethylene alkyl ether, polyoxyalkylene alkyl ether, etc. can be used as the surfactant. As the alkali agent, sodium carbonate, potassium carbonate, sodium hydroxide, potassium hydroxide, diethanolamine, tetramethylammonium hydroxide, or the like is used. In the present invention, it is preferable to use an aqueous solution containing both an alkali agent and a surfactant. Development is usually carried out at a processing temperature of 10 to 50 ° C., preferably 20 to 40 ° C., for a processing time of usually 30 to 600 seconds, preferably 30 to 120 seconds.

  The cured product of the colored resin composition of the present invention is useful as a color filter suitable for a liquid crystal display device, an organic EL display, a solid-state image sensor used in a digital camera, etc., and the color filter is as described above. Having a patterned blue pixel made of a cured product of the colored resin composition of the present invention.

  Among the display devices of the present invention, the liquid crystal display device is produced with a structure in which, for example, a backlight, a polarizing film, a display electrode, a liquid crystal, an alignment film, a common electrode, a color filter of the present invention, a polarizing film, and the like are laminated in this order. . The organic EL display is produced by forming the color filter of the present invention on either the upper or lower side of the multilayer organic light emitting device. The solid-state imaging device is manufactured by, for example, providing the color filter layer of the present invention on a silicon wafer provided with transfer electrodes and photodiodes, and then laminating microlenses.

  EXAMPLES The present invention will be described in more detail with reference to examples below, but the present invention is not limited to these examples. In the examples, “part” means “part by mass” unless otherwise specified. Further, the spectral transmittance was measured with a spectrophotometer “Shimadzu UV-3150”, the chromaticity in the XYZ color system was calculated, and the resistance of the colored body was evaluated.

Synthesis example 1
2 parts of Basic Blue 7 of the following formula (100) (manufactured by Tokyo Chemical Industry Co., Ltd., decomposition temperature: 217 ° C.) is dissolved in 150 parts of water, and while stirring, 0.8 part of lithium salt of trifluoromethanesulfonic acid is added to 10 parts of water. The dissolved solution was added. After stirring for 3 hours, the precipitated crystals were collected by filtration, washed with water, and dried to obtain 0.8 parts of Compound 1 shown in Table 1. Decomposition temperature: 238 ° C

Synthesis example 2
In a 2000 ml beaker, 4 parts of rhodamine B (manufactured by Tokyo Chemical Industry Co., Ltd.) of the following formula (101) and 750 parts of water were charged and stirred at room temperature for 30 minutes. A solution prepared by dissolving 1.5 parts of a lithium salt of trifluoromethylsulfonic acid in 10 parts of water was added dropwise thereto and stirred for 3 hours. The precipitated dye was collected by filtration, washed with water and dried to obtain 3.5 parts of compound 2-3 described in Table 2-1. Maximum absorption wavelength: 560 nm (cyclohexanone)

Synthesis Example 3 (Preparation of binder resin (copolymer))
A 500 ml four-necked flask is charged with 160 parts of methyl ethyl ketone, 10 parts of methacrylic acid, 33 parts of benzyl methacrylate, and 1 part of α, α'-azobis (isobutyronitrile), and nitrogen gas is introduced into the flask for 30 minutes while stirring. did. Then, it heated up to 80 degreeC and stirred for 4 hours as it was at 80-85 degreeC. After completion of the reaction, the reaction mixture was cooled to room temperature to obtain a colorless, transparent and uniform copolymer solution. This was precipitated in a 1: 1 mixed solution of isopropyl alcohol and water, filtered, and the solid content was taken out and dried to obtain a copolymer (A). The resulting copolymer (A) had a polystyrene equivalent weight average molecular weight of 18,000 and an acid value of 152.

Example 1
5.7 parts of copolymer (A) as binder resin, 6 parts of Kayrad DPHA (manufactured by Nippon Kayaku) as photopolymerizable monomer, 2.4 parts of Irgacure 907 (manufactured by Ciba Specialty Chemicals) as photopolymerization initiator Then, 0.6 parts of Compound 1-1 of Synthesis Example 1 as a dye, 17 parts of cyclopentanone and 13.3 parts of propylene glycol monomethyl ether acetate as a solvent were mixed to obtain a colored resin composition of the present invention. .

Example 2
5.7 parts of copolymer (A) as binder resin, 6 parts of Kayrad DPHA (manufactured by Nippon Kayaku) as photopolymerizable monomer, 2.4 parts of Irgacure 907 (manufactured by Ciba Specialty Chemicals) as photopolymerization initiator , 0.3 part of Compound 1 of Synthesis Example 1 as a dye, 0.3 part of Compound 2-3 of Synthesis Example 2, and 17 parts of cyclopentanone and 13.3 parts of propylene glycol monomethyl ether acetate as solvents Thus, a colored resin composition of the present invention was obtained.

Example 3
C. I. Pigment Blue 15: 6 / Ajisper PB821 / Solsperse 5000 / PGMEA = 15.0 / 6.0 / 1.0 / 78.0 (mass ratio) After mixing, 400 parts by weight of 0.3 mm zirconia beads were mixed. The pigment dispersion liquid 1 was obtained by adding, processing with a paint shaker for 60 minutes, and filtering. 24 parts of pigment dispersion 1 was added to Example 1 to obtain a colored resin composition of the present invention.

Example 4
24 parts of the dispersion 1 of Example 3 was added to Example 2 to obtain a colored resin composition of the present invention.

Comparative Example 1
The composition was the same as that of Example 1 except that Compound 1 was changed to Basic Blue 7, which is a dye having a clear color characteristic.

Comparative Example 2: A colored resin composition was obtained with the same composition as in Example 1 except that the target compound 1 in Synthesis Example 1 was changed to 50 parts of the pigment dispersion 1 in Example 3.

  After applying the colored resin compositions (Examples 1 to 4 and Comparative Examples 1 and 2) obtained above on the substrate and prebaking under conditions of 80 ° C. × 100 seconds, after curing by exposure through a mask. The resist film was developed with an aqueous alkali solution containing a surfactant, rinsed with water, and then heated at 200 ° C. to obtain a pattern. The obtained pattern had a resolution of 5 μm square in line and space, and no residue or peeling of pixels was confirmed.

Regarding Evaluation of Heat Resistance and Contrast A substrate for heat resistance and light resistance evaluation was prepared by applying each composition to a glass substrate in the same manner as described above, exposing the entire surface, and treating the substrate at 200 ° C. for 5 minutes. . Thereafter, each evaluation was performed as described below.
The heat resistance was evaluated by measuring the transmittance of the evaluation substrate with a spectrophotometer, then treating it at 200 ° C. for 120 minutes, measuring the spectral transmittance again, and calculating the color difference (ΔEab).
Contrast was measured using a contrast meter (CT-1 manufactured by Osaka Co., Ltd.) using the evaluation substrate, and the luminance value (cd / cm ² ) when the ^two polarizing plates were parallel to each other (cd / cm ² ). The contrast was calculated from the ratio of cm ² ) (brightness value in parallel / brightness value in orthogonal).
The results of heat resistance are shown in Table 3, and the results of contrast are shown in Table 4.

Table 3 Evaluation results of heat resistance

Table 4 Contrast evaluation results

From the evaluation results in Table 3, it was found that Examples 1 to 4 of the present invention had improved heat resistance as compared with the conventional dye of Comparative Example 1. In Examples 3 and 4, pigments were used in combination, but even when the colorant compound of the present invention and the pigment were mixed, good results were shown without any particular precipitation.
From the results of Table 4, it was found that Examples 1 to 2 of the present invention greatly improved contrast as compared with the conventional pigment of Comparative Example 2. Further, Examples 3 and 4 are a combination of a pigment and a dye, and it was also found that the contrast was improved as compared with Comparative Example 2. The colorant compound of the present invention shows good results without precipitation even when other dyes are mixed, and also shows good results even in combination with pigments.

  As described above, the colored resin composition of the present invention using a specific dye-based color material compound is clear and has excellent color filter characteristics (heat resistance, contrast, etc.), high quality and high reliability. Color filter pixels can be obtained. In addition, it can be used by being well mixed with pigments and other dyes depending on the application, and shows wide applicability, so it can be said that the industrial value is high.

Claims (8)

Colored resin composition for color filters containing a colorant compound represented by the following formula (1), a binder resin, a solvent, and a curing agent

(In Formula (1), R _{1a to} R _6a each independently represents a hydrogen atom, a C1-C30 alkyl group, a phenyl group, or a benzyl group, but at least one is a C1-C30 alkyl group. R _7a- R _20a independently represents a hydrogen atom, a halogen atom, or a C1-C6 alkyl group, and R _{7a to} R _20a each independently represents a hydrogen atom, a halogen atom, or a C1-C6 alkyl group. C1-C10 higher-order halogenated alkylsulfonate anion having at least one halogen atom X (n = 1 to 10, 1 ≦ m ≦ 2n + 1, X may be any halogen atom). The colored resin composition according to claim 1, comprising a triarylmethane compound having a trifluoromethanesulfonate anion as an anion moiety. The colored resin composition according to claim 1, further comprising a metal phthalocyanine pigment. Furthermore, the coloring resin composition as described in any one of Claims 1 thru | or 3 containing the coloring material compound shown by following formula (2).

(In Formula (2), R _{1b to} R _4b each independently represents a hydrogen atom, a C1-C12 alkyl group, or an aryl group. R _{5b to} R _10b each independently represent a hydrogen atom, a halogen atom, or C1-C12. R _{11b to} R _15b each independently represents a hydrogen atom, a C1-C12 alkyl group, a C1-C12 alkoxy group, a halogen atom, a C1-C12 alkoxy group, a nitro group, a carboxyl group, or an alkoxycarbonyl group. atom, a nitro group, a phenoxy group, a carboxyl group, an alkoxycarbonyl group, a sulfo group, one or may have two or more anion Z of the sulfamoyl group ^-. is higher halogenated alkyl group of C1-C10 An alkylsulfonylimide anion, an alkylsulfonylmethide anion, or an alkylsulfonyl Represents the phonate anion). A colored cured film for a color filter, which is patterned using the colored resin composition according to any one of claims 1 to 4. A color filter comprising the colored cured film for a color filter according to claim 5. A display device comprising the color filter according to claim 6. A solid-state imaging device comprising the color filter according to claim 7.