JP5583396B2 - Pigment dispersion composition, colored photosensitive composition, color filter, method for producing color filter, liquid crystal display device, and solid-state imaging device - Google Patents

Description

  The present invention relates to a pigment dispersion composition, a colored photosensitive composition containing the same, a color filter produced using the colored photosensitive composition, a method for producing the color filter, a liquid crystal display device provided with the color filter, and The present invention relates to a solid-state imaging device.

  The color filter contains a pigment dispersion composition in which an organic pigment or an inorganic pigment is dispersed, a polyfunctional monomer, a photopolymerization initiator, an alkali-soluble resin, and other components to form a colored photosensitive composition. It is manufactured by forming a colored pattern by a photolithography method or the like.

  In recent years, color filters tend to be used not only for monitors but also for televisions (TVs) in liquid crystal display (LCD) applications. Along with this trend of expanding applications, color filters are required to have high color characteristics in terms of chromaticity, brightness, contrast, and the like. Similarly, color filters having high color characteristics are demanded for color filters for image sensors (solid-state imaging devices).

  In response to the above requirements, it is required to disperse the pigment contained in the colored photosensitive composition in a finer state (good dispersibility). However, if the particle diameter of the pigment is made finer, the surface area of the pigment particle becomes larger, so that the cohesive force between the pigment particles becomes stronger, and if the dispersibility of the pigment is insufficient, fringe ( There are problems that the edge portion is notched) and surface irregularities occur, resulting in a decrease in chromaticity and dimensional accuracy of the manufactured color filter and a significant deterioration in contrast. It is often difficult to achieve both a high level of dispersibility and contrast.

  In order to solve such problems, various dye derivatives that promote dispersion stability have been developed. For example, although it has been proposed to use a quinophthalone compound to ensure the dispersibility of the pigment (see, for example, Patent Documents 1 and 2), a fine dispersion capable of achieving a good contrast with respect to the pigment dispersion composition. For the pigment, there was a problem that dispersibility was insufficient under the conditions described in Patent Document 1.

  Also in Patent Document 2, the pigment is not sufficiently refined, and the dispersion stability of the refined pigment is insufficient from the viewpoint of achieving good contrast.

JP 2003-167112 A JP 2002-179799 A

This invention makes it a subject to achieve the following objectives.
That is, an object of the present invention is to provide a pigment dispersion composition having good dispersibility and contrast of fine pigments and improved brightness, and a colored photosensitive composition containing the pigment dispersion composition. It is in.
Another object of the present invention is to provide a color filter having high color purity and transmittance, good contrast and excellent color characteristics by using the colored photosensitive composition of the present invention, An object of the present invention is to provide a liquid crystal display device having a high brightness and a clear image, and a solid-state imaging device having excellent color characteristics.

As a result of intensive studies, the present inventors have obtained a pigment dispersion composition containing a pigment having an average primary particle diameter of 10 to 30 nm and a quinophthalone compound having a specific substituent in the molecule at a specific mass ratio in a solvent. Thus, it has been found that a pigment dispersion composition in which not only the contrast and the dispersibility are both good, but also an improvement in lightness is achieved by the excellent color characteristics of the quinophthalone compound as a further effect is obtained. It came to be completed.
That is, the means for solving the problems are as follows.

<1> A pigment dispersion composition containing (A ) a pigment , ( B ) a quinophthalone compound, and (C) a solvent , wherein the (A) pigment is selected from pigments having an average primary particle size of 10 nm to 30 nm. The (B) quinophthalone compound has at least one group selected from a hydroxyl group, a carboxylic acid group, a sulfonic acid group, an amino group, and a salt thereof, and has the following general formula (1) in a quinophthalone compound it expresses, and said (a) a pigment, the (B) content ratio of quinophthalone compound [(a) :( B)] is, by weight (a) :( B) = 85 : A pigment dispersion composition in the range of 15 to 10:90.
<2> The content ratio [(A) :( B)] of the (A) pigment and the (B) quinophthalone compound is (A) :( B) = 82: 18 to 15:85 on a mass basis. <1> The pigment dispersion composition according to <1> in the range.
<3> The content ratio [(A) :( B)] of the (A) pigment and the (B) quinophthalone compound is (A) :( B) = 80: 20 to 20:80 on a mass basis. <1> The pigment dispersion composition according to <1> in the range.

<4> The pigment (A) is at least one selected from the group consisting of a quinophthalone pigment, an isoindoline pigment, an azo metal complex, a metal phthalocyanine green pigment, a diketopyrrolopyrrole pigment, and an anthraquinone pigment. The pigment dispersion composition according to any one of <1> to <3>, which is a seed.
<5> The above (A) pigment is at least one selected from the group consisting of a copper phthalocyanine pigment, a zinc phthalocyanine pigment, an azo-based nickel complex pigment, and an isoindoline-based pigment. The pigment dispersion composition according to any one of the above.

<6> The pigment dispersion composition according to any one of <1> to <3>, wherein the (A) pigment is a pigment kneaded in the presence of an inorganic salt and a solvent .

(In the general formula (1), X ^{1 to} X ⁸ each independently represent a hydrogen atom, a chlorine atom, or a bromine atom. R ^{1 to} R ⁴ each independently represent a hydrogen atom, —OC _n H _2n —Y, _{-SO 3 C n H 2n -Y,} -SO 2 NHC n H 2n -Y, -CO 2 C n H 2n -Y, -NHCOC n H 2n -Y, _{or, -N (C n H 2n -Y} ) ₂ represents not all hydrogen atoms, n represents an integer of 0 to 20, Y represents a hydrogen atom, —OH, —SO ₃ H, —CO ₂ H, —CO ₂ ^— [NH ₄ ]. ^+, _-SO ³ - represents the _[NH ^{4] +,} or, -N ^(R ₅₎ .R represents ₂ ⁵ a hydrogen atom or an alkyl group having 1 to 20 carbon atoms).

< 7 > A colored photosensitive composition comprising (D) a polymerizable compound, (E) a photopolymerization initiator, and the pigment dispersion composition according to any one of <1> to < 6 >.
< 8 > A photosensitive film forming step of forming the photosensitive film by applying the colored photosensitive composition according to < 7 > onto the substrate directly or via another layer, and the formed photosensitive film And a color pattern forming step of forming a color pattern by sequentially performing pattern exposure and development.
< 9 > A color filter provided with the colored pattern obtained by using the colored photosensitive composition according to <7> or obtained by the production method according to < 8 >.
< 10 > A display device comprising the color filter according to < 9 >.
< 11 > A solid-state imaging device comprising the color filter according to < 9 >.

According to the present invention, it is possible to provide a pigment dispersion composition having both good contrast and dispersibility and improved brightness, and a colored photosensitive composition containing the pigment dispersion composition.
In addition, by using the colored photosensitive composition of the present invention, a color filter having a high color purity and transmittance, a good contrast, a colored pattern with high color characteristics, and a luminance filter using the color filter. It is possible to provide a liquid crystal display device having a high and clear image and a solid-state imaging device having excellent color characteristics.

In a color nonuniformity test, it is a top view which shows the coordinate of the measurement location of chromaticity in a 550 mm x 650 mm board | substrate.

  Hereinafter, the pigment dispersion composition, the colored photosensitive composition, the color filter, and the method for producing the color filter of the present invention will be described in detail.

<Pigment dispersion composition>
The pigment dispersion composition of the present invention comprises (A) a pigment having an average primary particle size of 10 to 30 nm, (B) at least one group selected from a hydroxyl group, a carboxylic acid group, a sulfonic acid group, an amino group, and a salt thereof. One possess, quinophthalone compounds you express the general formula (I) described in detail below, and, (C) and a solvent, and the content ratio of the (a) and the pigment, and the (B) quinophthalone compound [(A) :( B)] is in the range of (A) :( B) = 85: 15 to 10:90 on a mass basis.
Hereinafter, each component which comprises the pigment dispersion composition of this invention is explained in full detail.

[(A) Pigment having an average primary particle size of 10 nm to 30 nm ]
As the colorant that can be used in the coloring composition of the present invention, a pigment arbitrarily selected from conventionally known various inorganic pigments and organic pigments can be used as long as the average primary particle size is 10 nm or more and 30 nm or less. . The following are typical pigments that can be used in the present invention.

  Examples of the red pigment that can be used in the present invention include all red pigments that are usually used in the production of color filters. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 9, 10, 14, 17, 22, 23, 31, 38, 41, 48: 1, 48: 2, 48: 3, 48: 4, 49, 49: 1, 49: 2, 52: 1, 52: 2, 53: 1, 57: 1, 60: 1, 63: 1, 66, 67, 81: 1, 81: 2, 81: 3, 83, 88, 90, 105, 112, 119, 122, 123, 144, 146, 149, 150, 155, 166, 168, 169, 170, 171, 172, 175, 176, 177, 178, 179, 184, 185, 187, 188, 190, 200, 202, 206, 207, 208, 209, 210, 216, 220, 224, 226, 242, 246, 254, 255, 279, etc. Be done Instead, various red pigments can be used.

  Examples of yellow pigments that can be used in the present invention include all yellow pigments that are usually used in the production of color filters. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35: 1, 36, 36: 1, 37, 37: 1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 125, 126, 127, 128, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 17 4, 175, 176, 177, 179, 180, 181, 182, 185, 187, 188, 193, 194, 199, 213, 214, etc., but not limited thereto, various yellow pigments are used. can do.

  Examples of the green pigment that can be used in the present invention include all green pigments that are usually used in the production of color filters. I. Pigment Green 7, 10, 36, 37, 58, zinc halide phthalocyanine pigments described in JP 2008-19383 A, JP 2007-320986 A, JP 2004-70342 A, and the like. Without being limited thereto, various green pigments can be used.

Among the above pigments, (B) quinophthalone pigments, isoindoline pigments, azo metal complexes, metal phthalocyanine green pigments, diketopyrrolopyrrole pigments, anthraquinone pigments due to the relationship with the color characteristics of the quinophthalone compound described later. Any one pigment selected from the group consisting of pigments is preferably used alone or in combination of two or more.
Examples of the quinophthalone pigment include C.I. I. Pigment Yellow 138 and isoindoline pigments include C.I. I. Pigment Yellow 139, 185, and azo metal complexes include C.I. I. Pigment Yellow 150, and metal phthalocyanine green pigments include C.I. I. Pigment Green 7, 36, 58, diketopyrrolopyrrole pigments include C.I. I. Pigment Red254, 255 and anthraquinone pigments include C.I. I. Pigment Red 177 and the like.

  Among these, halogenated copper phthalocyanine pigments (for example, CI Pigment Green 7, 36), zinc halide phthalocyanine pigments (for example, CI Pigment Green 58), azo-based nickel complex pigments (for example, CI Pigment Yellow) 150) and a pigment selected from isoindoline pigments (for example, CI Pigment Yellow 139, 185) and a quinophthalone compound having a specific functional group described later are particularly preferably used in combination.

  As the pigment used in the present invention, those having an average primary particle diameter in the range of 10 nm to 30 nm are used. By using a pigment having an average primary particle diameter in this range, a colored photosensitive composition for a color filter having excellent dispersibility stability and coloring power, high brightness, and high contrast can be obtained.

  The average primary particle diameter in the present invention is the longer diameter of 400 primary particles of the pigment constituting the aggregate on a two-dimensional image obtained by photographing particles in the field of view with a transmission electron microscope. The average value of the (major axis) and the shorter diameter (minor axis) is obtained and averaged.

  There are no particular restrictions on the method of preparing the pigment having an average primary particle size in the range of 10 nm to 30 nm, and any method can be used to make the particles fine and the particle size adjusted to the above range. Solvent salt milling is preferably employed as a method of adjusting the pigment to the average primary particle size in that it can be suppressed and pigment particles having a relatively small average primary particle size can be obtained.

The solvent salt milling process is a process of kneading and grinding a pigment, an inorganic salt, and an organic solvent. The pigment having a large particle size may be subjected to solvent salt milling after dry grinding. When kneading and grinding the pigment, depending on the pigment type, it is preferable that a pigment derivative coexists in addition to an inorganic salt and an organic solvent from the viewpoint of inhibiting crystal growth. By allowing the pigment derivative to coexist, crystal growth at the time of kneading and grinding is suppressed, and a finer pigment can be obtained as compared with the case where the pigment derivative is not included.
Specifically, a pigment, an inorganic salt, a dye derivative used in combination as required, and an organic solvent that does not dissolve them are charged into a kneader, and kneading and grinding are performed therein. As a kneader at this time, for example, a kneader, a mix muller, or the like can be used.

  As the inorganic salt, a water-soluble inorganic salt can be preferably used. For example, an inorganic salt such as sodium chloride, potassium chloride, sodium sulfate is preferably used. Moreover, it is more preferable to use an inorganic salt having an average particle size of 0.5 to 50 μm. Such an inorganic salt can be easily obtained by pulverizing a normal inorganic salt.

  In obtaining a pigment having an average primary particle size in the range of 10 nm to 30 nm, it is preferable to increase the ratio of the amount of inorganic salt used to the amount of pigment used in solvent salt milling. That is, the amount of the inorganic salt used is preferably 5 to 20 parts, more preferably 7 to 15 parts, based on 1 part of the pigment in terms of mass.

  As the organic solvent, an organic solvent capable of suppressing crystal growth is preferably used, and as such an organic solvent, a water-soluble organic solvent can be suitably used. For example, diethylene glycol, glycerin, ethylene glycol, propylene glycol, liquid polyethylene Glycol, liquid polypropylene glycol, 2- (methoxymethoxy) ethanol, 2-butoxyethanol, 2- (isopentyloxy) ethanol, 2- (hexyloxy) ethanol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol mono Butyl ether, triethylene glycol, triethylene glycol monomethyl ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, dipropylene group Call, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl ether, can be used dipropylene glycol.

  The amount of water-soluble organic solvent used in this case is not particularly limited, but is preferably in the range of 0.01 to 5 parts and 0.1 to 2 parts with respect to 1 part of the pigment in terms of mass. .

As desired, the pigment derivative coexisting with the inorganic salt can be appropriately selected depending on the kind of pigment to be kneaded and ground, and examples thereof include quinophthalone compounds, phthalocyanine compounds, anthraquinone compounds, quinacridone compounds, benzimidazolone compounds, and the like. However, derivatives such as a quinophthalone compound and a phthalocyanine compound are preferable from the viewpoints of inhibiting crystal growth and hue.
The amount used when the pigment derivative is used in combination is not particularly limited, but is preferably 1 to 20 parts and more preferably 1 to 15 parts in terms of mass with respect to 100 parts of pigment. preferable.

  30-150 degreeC is preferable and the temperature at the time of solvent salt milling has more preferable 50-100 degreeC. The solvent salt milling time is preferably 5 to 20 hours, and more preferably 8 to 18 hours.

  In this way, a mixture containing the pigment, inorganic salt, and organic solvent as the main components is obtained. The organic solvent and the inorganic salt are removed from the mixture, and the solid material mainly containing the pigment is washed, filtered, and dried as necessary. By pulverizing or the like, it is possible to obtain a pigment powder that has been refined to have a specific average primary particle size.

  As washing after kneading and grinding, either water washing or hot water washing can be employed. The number of washings may be repeated in the range of 1 to 5 times. In the case of the mixture using a water-soluble inorganic salt and a water-soluble organic solvent, the organic solvent and the inorganic salt are easily removed by washing with water.

Examples of the drying after filtration and washing described above include batch-type or continuous drying in which the pigment is dehydrated and / or desolvated by heating at 80 to 120 ° C. with a heating source installed in a dryer. Examples of the dryer generally include a box dryer, a band dryer, and a spray dryer.
In addition, the pulverization after drying is not an operation for increasing the specific surface area or reducing the average particle size of the primary particles, but, for example, in the case of drying using a box dryer or a band dryer. When the pigment is in the form of a lamp or the like, it is carried out to break the pigment into powder, and examples thereof include pulverization with a mortar, hammer mill, disk mill, pin mill, jet mill and the like.

When the primary particles of the pigment of the present invention have an aspect ratio of 1 to 3 in the range of 1 to 3, the viscosity characteristics are improved in each application field and the fluidity is further increased. In order to obtain the aspect ratio, as in the case of obtaining the average particle diameter of the primary particles as described above, the particles in the field of view are photographed with a transmission electron microscope or a scanning electron microscope. Then, an average value of the longer diameter (major diameter) and the shorter diameter (minor diameter) is obtained for 400 primary particles constituting the aggregate on the two-dimensional image, and calculation is performed using these values. .
Incidentally, it Pigments used in the present invention, it takes an average primary particle diameter of 30nm or less in the range of 10nm, from the viewpoint of dispersion stability, the average primary particle diameter of 10nm or more 28nm or less Is more preferably 10 nm or more and 25 nm or less.

  The pigment content in the pigment dispersion composition of the present invention can be selected according to the purpose, but in general, it is preferably 5 to 30% by mass in the pigment dispersion composition, and good contrast is obtained. From this point of view, the range of 8 to 20% by mass is more preferable.

[(B) a hydroxyl group, a carboxylic acid group, a sulfonic acid group, and at least one organic amino and a group selected from their salts, quinophthalone compounds that Ru represented by the general formula (I)]
Quinophthalone compound used in the present invention, as a substituent a hydroxyl group, a carboxylic acid group, a sulfonic acid group, an amino group, and have a group selected from their salts in at least in one molecule following general formula (I) in Ru compound der represented. These substituents may be directly bonded to the quinophthalone compound, or may be further bonded through a linking group such as an alkyl group as necessary from the viewpoint of improving dispersibility.
The quinophthalone compound having a specific substituent that can be used in the present invention can be obtained, for example, by the method described in paragraphs [0015] to [0019] of JP-A No. 2003-167112.
An example of a method for synthesizing the quinophthalone compound represented by the following general formula (I) used in the present invention is given below .
Quinophthalone pigment: 4,5,6,7-tetrachloro-2- [2- (4,5,6,7-tetrachloro-2,3-dihydro-1,3-dioxo-1H-inden-2-yl ) -8-quinolinyl] -1H-isoindole-1,3 (2H) -dione (PY138) is added to concentrated sulfuric acid, fuming sulfuric acid, chlorosulfonic acid, or a mixture thereof to carry out the sulfonation reaction. The reaction solution is diluted with a large amount of water, or neutralized with a metal alkali aqueous solution or an amine aqueous solution, and the resulting suspension is filtered, washed with an aqueous washing solution, and dried. When neutralization is not performed, the resulting sulfonated derivative becomes an acid, and when neutralized, it becomes a salt.
When neutralization is performed in the above synthesis process, it is preferable to use an aqueous amine solution rather than an aqueous metal alkali solution. This is because if an aqueous alkali metal solution is used for neutralization, the alkali metal remains in the pixels of the color filter, which may adversely affect the electrical characteristics of the liquid crystal. As the aqueous amine solution used for neutralization, aqueous solutions of ammonia, monoethanolamine, tetramethylammonium hydroxide (TMAH) and the like can be used, but in the present invention, various aqueous amine solutions are used without being particularly limited thereto. be able to.
As a key Nofutaron compounds of the present invention include compounds represented by the following general formula (1).

(In the general formula (1), X ^{1 to} X ⁸ each independently represent a hydrogen atom, a chlorine atom, or a bromine atom. R ^{1 to} R ⁴ each independently represent a hydrogen atom, —OC _n H _2n —Y, _{-SO 3 C n H 2n -Y,} -SO 2 NHC n H 2n -Y, -CO 2 C n H 2n -Y, -NHCOC n H 2n -Y, _{or, -N (C n H 2n -Y} ) ₂ represents not all hydrogen atoms, n represents an integer of 0 to 20, Y represents a hydrogen atom, —OH, —SO ₃ H, —CO ₂ H, —CO ₂ ^— [NH ₄ ]. ^+, _-SO ³ - represents the _[NH ^{4] +,} or, -N ^(R ₅₎ .R represents ₂ ⁵ a hydrogen atom or an alkyl group having 1 to 20 carbon atoms).
Among the quinophthalone compounds represented by the general formula (1), it is preferable that four or more of X ^{1 to} X ⁸ are chlorine atoms or bromine atoms, and all ^eight of X ^{1 to} X ⁸ are chlorine atoms. Some are particularly preferred.
A group in which any one of the above substituents other than a hydrogen atom is introduced into 1 to 3 positions of R ^{1 to} R ⁴ is preferable, and in particular, any one of the above substituents is 1 to 2 at the position of R ² or R ^3. Those introduced are particularly preferred. As the substituent Y to be introduced, a sulfonic acid group, a carboxylic acid group, an amino group and the like are preferable, and the number n of carbon atoms in the linking group connecting the quinophthalone compound and the substituent Y is preferably 1 to 12, Those of 1 to 6 are particularly preferred.
Although the example of the preferable structure of the quinophthalone compound which has the specific substituent which can be used for this invention is shown below, this invention is not restrict | limited to these.

The amount of the (B) quinophthalone compound added to the pigment dispersion composition of the present invention is such that the content ratio [(A) :( B)] of the (A) pigment and (B) quinophthalone compound is ( A): (B) = 85: 15 to 10:90 is required. That is, when the amount of (B) quinophthalone compound added is too small relative to the pigment (A), the pigment dispersion stabilizing effect is not sufficiently exhibited, while when the amount of quinophthalone compound is too large, There is a concern that the polarity of the particle interface becomes too high and the pigment dispersion stability decreases.
The content ratio [(A) :( B)] of the pigment (A) to the (B) quinophthalone compound is preferably in the range of 82:18 to 15:85, and 80:20 to 20:80. More preferably, it is in the range.

[(C) Solvent]
The pigment dispersion composition of the present invention further contains a solvent.
Examples of the (C) solvent that can be used in the present invention include esters such as ethyl acetate, n-butyl acetate, isobutyl acetate, amyl formate, isoamyl acetate, isobutyl acetate, butyl propionate, isopropyl butyrate, ethyl butyrate, butyl butyrate, Alkyl esters, methyl lactate, ethyl lactate, methyl oxyacetate, ethyl oxyacetate, butyl oxyacetate, methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate, methyl 3-oxypropionate, 3 -3-oxypropionic acid alkyl esters such as ethyl oxypropionate; methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, methyl 2-oxypropionate Ethyl 2-oxypropionate, propyl 2-oxypropionate, methyl 2-methoxypropionate, ethyl 2-methoxypropionate, propyl 2-methoxypropionate, methyl 2-ethoxypropionate, ethyl 2-ethoxypropionate, 2 -Methyl oxy-2-methylpropionate, ethyl 2-oxy-2-methylpropionate, methyl 2-methoxy-2-methylpropionate, ethyl 2-ethoxy-2-methylpropionate, methyl pyruvate, ethyl pyruvate , Propyl pyruvate, methyl acetoacetate, ethyl acetoacetate, methyl 2-oxobutanoate, ethyl 2-oxobutanoate and the like;
Ethers such as diethylene glycol dimethyl ether, tetrahydrofuran, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol methyl ether acetate, propylene glycol ethyl Ether acetate, propylene glycol propyl ether acetate, etc .;
Ketones such as methyl ethyl ketone, cyclohexanone, 2-heptanone, 3-heptanone;
Aromatic hydrocarbons such as toluene, xylene and the like can be mentioned.

Of these, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, cyclohexanone, ethyl carbitol acetate, butyl Carbitol acetate, propylene glycol methyl ether acetate and the like are suitable.
You may use a solvent in combination of 2 or more types besides using independently.

  The content of the solvent (C) in the pigment dispersion composition is appropriately selected according to the use of the pigment dispersion composition. When the pigment dispersion composition is used for the preparation of a colored photosensitive composition described later, from the viewpoint of handleability, it contains (A) a pigment, (B) a quinophthalone compound, and a pigment dispersant used in combination as desired. It can contain so that solid content concentration may be 5-50 mass%.

[Other ingredients]
In the pigment dispersion composition of the present invention, various additives can be used in combination with the components (A) to (C) as long as the effects of the present invention are not impaired.
(Pigment dispersant)
As a pigment dispersant that can be used in the pigment dispersion composition of the present invention, a monomer represented by the following general formula (i), (ii), or (i) -2 is polymerized or copolymerized, It is preferably a polymerized product in which these repeating units derived from a single monomer are introduced.

In general formula (i), general formula (ii), and general formula (i) -2, R ^{1 to} R ⁶ each independently represent a hydrogen atom or a monovalent organic group, and X ¹ and X ² each independently represents —CO—, —C (═O) O—, —CONH—, —OC (═O) —, or a phenylene group, and L ¹ and L ² each independently represent Represents a single bond or a divalent organic linking group, La represents an alkylene group having 2 to 10 carbon atoms, Lb represents —C (═O) —, or —NHC (═O) —; ¹ and A ² each independently represents a monovalent organic group, m and n each independently represents an integer of 2 to 8, p and q each independently represents an integer of 1 to 100. Represent.
Such compounds are described in detail in paragraphs [0021] to [0089] of JP-A-2009-256572, and the compounds described herein can be suitably used as a pigment dispersant in the present invention.
As the pigment dispersant, in addition to the above compounds, for example, known pigment dispersants and surfactants can be appropriately selected and used.

  Specifically, many types of compounds can be used. For example, organosiloxane polymer KP341 (manufactured by Shin-Etsu Chemical Co., Ltd.), (meth) acrylic acid (co) polymer polyflow No. 75, no. 90, no. Cationic surfactants such as 95 (manufactured by Kyoeisha Chemical Industry Co., Ltd.) and W001 (manufactured by Yusho Co., Ltd.); polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene Nonionic surfactants such as octylphenyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol dilaurate, polyethylene glycol distearate, and sorbitan fatty acid ester; anionic systems such as W004, W005, and W017 (manufactured by Yusho Co., Ltd.) Surfactant: EFKA-46, EFKA-47, EFKA-47EA, EFKA polymer 100, EFKA polymer 400, EFKA polymer 401, EFKA polymer 450 (all manufactured by Ciba Specialty Chemicals) Polymer dispersants such as Disperse Aid 6, Disperse Aid 8, Disperse Aid 15, Disperse Aid 9100 (all manufactured by San Nopco); Solsperse 3000, 5000, 9000, 12000, 13240, 13940, 17000, 24000, Various Solsperse dispersants (manufactured by Nippon Lubrizol Corp.) such as 26000, 28000; Adeka Pluronic L31, F38, L42, L44, L61, L64, F68, L72, P95, F77, P84, F87, P94, L101, P103, F108, L121, P-123 (Asahi Denka Co., Ltd.) and Isonet S-20 (Sanyo Kasei Co., Ltd.), Disperbyk 101, 103, 106, 108, 109, 111, 112, 116, 130, 140, 142, 162, 163, 164, 166, 167, 170, 171, 174, 176, 180, 182, 2000, 2001, 2050, 2150 (by Big Chemie). In addition, an oligomer or polymer having a polar group at the molecular end or side chain, such as an acrylic copolymer.

  When a pigment dispersant is used in combination with the preparation of the pigment dispersion composition, it is preferable to add 1 to 100 parts of the pigment dispersant in terms of mass with respect to 100 parts of the pigment (A). 3 to 70 parts are more preferable.

  In addition, the pigment dispersion composition of the present invention, if necessary, (B) a quinophthalone compound having at least one group selected from a hydroxyl group, a carboxylic acid group, a sulfonic acid group, an amino group and salts thereof, Different dye derivatives may be added. As described above, a pigment derivative is a compound in which a partial structure or polar group having affinity for a dispersant is introduced into a pigment, and a partial structure or polar group having affinity for the dispersant of the compound is introduced. By adsorbing the dye derivative on the pigment surface and using this as the adsorption point of the dispersant, the pigment can be dispersed as fine particles in the pigment dispersion composition, preventing re-aggregation, and having high contrast. It is effective in constructing a color filter excellent in transparency.

  As content in the pigment dispersion composition of a pigment derivative, 1-30 parts are preferable with respect to 100 parts of pigments by mass conversion, and 3-20 parts are more preferable. When the content is within the above range, the viscosity can be kept low and the dispersion can be performed satisfactorily and the dispersion stability after the dispersion can be improved. When the color curable composition of the present invention is prepared by using a color filter to produce a color filter, a color filter having high contrast and good color characteristics can be obtained.

-Preparation of pigment dispersion composition-
The preparation mode of the pigment dispersion composition of the present invention is not particularly limited. For example, the pigment, the pigment dispersant, and the solvent are mixed using a vertical or horizontal sand grinder, a pin mill, a slit mill, an ultrasonic disperser, or the like. It can be obtained by performing fine dispersion treatment with beads made of glass, zirconia or the like having a particle diameter of 0.01 to 1 mm.

Before performing bead dispersion, knead and disperse using a two-roll, three-roll, ball mill, tron mill, disper, kneader, kneader, homogenizer, blender, single- or twin-screw extruder while applying strong shearing force. It is also possible to perform processing.
For details on kneading and dispersing, see T.W. C. “Paint Flow” by Patton
and Pigment Dispersion "(1964 John Wille)
and Sons).

  Since the pigment dispersion composition of the present invention has good dispersibility and contrast of the pigment, it can be used in various applications that require coloration. Among them, a colored photosensitive composition used for producing a color filter. Is preferably used.

<Colored photosensitive composition>
The colored photosensitive composition of the present invention includes the above-described pigment dispersion composition of the present invention, (D) a polymerizable compound, (E) a photopolymerization initiator, and optionally an alkali-soluble resin. Depending on, other components may be included. Hereinafter, each component contained in the colored photosensitive composition of the present invention will be described in detail.

(Pigment dispersion composition)
The colored photosensitive composition of the present invention is constituted by using at least one kind of the pigment dispersion composition of the present invention. The details of the pigment dispersion composition of the present invention constituting the colored photosensitive composition are as described above.

As content of the pigment dispersion composition in the colored photosensitive composition of this invention, content of a pigment becomes the range of 5-70 mass% with respect to the total solid (mass) of a colored photosensitive composition. The amount is preferable, and an amount in the range of 15 to 60% by mass is more preferable. When the content of the pigment dispersion composition is within the above range, the color density is sufficient and effective in securing excellent color characteristics.

  Furthermore, in the colored photosensitive composition of the present invention, the content of the total amount of (A) the quinophthalone compound having a specific substituent (B) also having a function as a pigment and a colorant contained in the pigment dispersion composition of the present invention. Is preferably 5% by mass to 60% by mass, more preferably 10% by mass to 55% by mass, and most preferably 15% by mass with respect to the total amount excluding the solvent in the colored photosensitive composition. -50 mass%. By using the addition amount in this range, a color filter having excellent color characteristics, high contrast, and high luminance can be obtained.

[(D) Polymerizable compound]
The colored photosensitive composition of the present invention contains at least one polymerizable compound. The polymerizable compound that can be used in the present invention is an addition polymerizable compound having at least one ethylenically unsaturated double bond, and is a compound having at least one terminal ethylenically unsaturated bond, preferably two or more. To be elected. Such a compound group is widely known in the industrial field, and can be used without any particular limitation in the present invention. These have chemical forms such as monomers, prepolymers, i.e. dimers, trimers and oligomers, or mixtures thereof and copolymers thereof. Examples of monomers and copolymers thereof include unsaturated carboxylic acids (for example, acrylic acid, methacrylic acid, itaconic acid, crotonic acid, isocrotonic acid, maleic acid, etc.), and esters and amides thereof. In this case, an ester of an unsaturated carboxylic acid and an aliphatic polyhydric alcohol compound, or an amide of an unsaturated carboxylic acid and an aliphatic polyvalent amine compound is used. In addition, an addition reaction product of an unsaturated carboxylic acid ester or amide having a nucleophilic substituent such as a hydroxyl group, amino group or mercapto group with a monofunctional or polyfunctional isocyanate or epoxy, and monofunctional or polyfunctional A dehydration condensation reaction product with a functional carboxylic acid is also preferably used. In order to accelerate development, compounds having an organic acid group such as an alkyl oxide group or a carboxylic acid group in the structure are also preferably used. Further, an addition reaction product of an unsaturated carboxylic acid ester or amide having an electrophilic substituent such as an epoxy group or an epoxy group with a monofunctional or polyfunctional alcohol, amine or thiol, a halogen group or In addition, a substitution reaction product of an unsaturated carboxylic acid ester or amide having a leaving substituent such as a tosyloxy group and a monofunctional or polyfunctional alcohol, amine or thiol is also suitable. As another example, it is also possible to use a group of compounds substituted with unsaturated phosphonic acid, styrene, vinyl ether or the like instead of the unsaturated carboxylic acid.

  Specific examples of the monomer of an ester of an aliphatic polyhydric alcohol compound and an unsaturated carboxylic acid include acrylic acid esters such as ethylene glycol diacrylate, triethylene glycol diacrylate, 1,3-butanediol diacrylate, and tetramethylene glycol. Diacrylate, propylene glycol diacrylate, neopentyl glycol diacrylate, trimethylolpropane triacrylate, trimethylolpropane tri (acryloyloxypropyl) ether, trimethylolethane triacrylate, hexanediol diacrylate, 1,4-cyclohexanediol diacrylate , Tetraethylene glycol diacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate , Pentaerythritol tetraacrylate, dipentaerythritol diacrylate, dipentaerythritol hexaacrylate, sorbitol triacrylate, sorbitol tetraacrylate, sorbitol pentaacrylate, sorbitol hexaacrylate, tri (acryloyloxyethyl) isocyanurate, polyester acrylate oligomer, isocyanuric acid There are EO-modified triacrylate and the like.

  Methacrylic acid esters include tetramethylene glycol dimethacrylate, triethylene glycol dimethacrylate, neopentyl glycol dimethacrylate, trimethylolpropane trimethacrylate, trimethylolethane trimethacrylate, ethylene glycol dimethacrylate, 1,3-butanediol dimethacrylate, Hexanediol dimethacrylate, pentaerythritol dimethacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate, dipentaerythritol dimethacrylate, dipentaerythritol hexamethacrylate, sorbitol trimethacrylate, sorbitol tetramethacrylate, bis [p- (3-methacryloxy- 2-hydroxypro ) Phenyl] dimethyl methane, bis - [p- (methacryloxyethoxy) phenyl] dimethyl methane.

  Itaconic acid esters include ethylene glycol diitaconate, propylene glycol diitaconate, 1,3-butanediol diitaconate, 1,4-butanediol diitaconate, tetramethylene glycol diitaconate, pentaerythritol diitaconate And sorbitol tetritaconate. Examples of crotonic acid esters include ethylene glycol dicrotonate, tetramethylene glycol dicrotonate, pentaerythritol dicrotonate, and sorbitol tetradicrotonate. Examples of isocrotonic acid esters include ethylene glycol diisocrotonate, pentaerythritol diisocrotonate, and sorbitol tetraisocrotonate. Examples of maleic acid esters include ethylene glycol dimaleate, triethylene glycol dimaleate, pentaerythritol dimaleate, and sorbitol tetramaleate.

  About these polymeric compounds, the details of usage methods, such as the structure, single use, combined use, and addition amount, can be arbitrarily set according to the performance design of the final colored photosensitive composition. For example, it is selected from the following viewpoints.

  From the viewpoint of sensitivity, a structure having a large unsaturated group content per molecule is preferable, and in many cases, a bifunctional or higher functionality is preferable. Further, in order to increase the strength of the cured film, those having three or more functionalities are preferable, and further, different functional numbers and different polymerizable groups (for example, acrylic acid ester, methacrylic acid ester, styrene compound, vinyl ether compound). A method of adjusting both sensitivity and intensity by using a combination of these materials is also effective.

  In addition, other components in the colored photosensitive composition, such as binder polymers such as alkali-soluble resins, compatibility with photopolymerization initiators, and the dispersibility of pigments, selection and use of polymerizable compounds Is an important factor. For example, compatibility may be improved by the use of a low-purity compound or a combination of two or more.

  In addition, a specific structure may be selected for the purpose of improving adhesion with a substrate or the like. (D) The polymerizable compound is preferably used in the range of 5 to 70% by mass, more preferably 10 to 60% by mass with respect to the nonvolatile components in the colored photosensitive composition. These may be used alone or in combination of two or more. In addition, as for the method of using the polymerizable compound, an appropriate structure, blending, and addition amount can be arbitrarily selected from the viewpoints of polymerization inhibition with respect to oxygen, resolution, fogging property, refractive index change, surface tackiness, and the like.

[(E) Photopolymerization initiator]
The photosensitive resin composition of the present invention contains (E) a photopolymerization initiator.
Examples of the (E) photopolymerization initiator include organic halogenated compounds, oxydiazole compounds, carbonyl compounds, ketal compounds, benzoin compounds, acridine compounds, organic peroxide compounds, azo compounds, coumarin compounds, azide compounds, metallocenes. Examples include compounds, hexaarylbiimidazole compounds, organic boric acid compounds, disulfonic acid compounds, oxime ester compounds, onium salt compounds, and acylphosphine (oxide) compounds.

Specific examples of organic halogenated compounds include Wakabayashi et al., “Bull Chem. Soc.
Japan 42, 2924 (1969), U.S. Pat. No. 3,905,815, JP-B 46-4605, JP-A 48-36281, JP-A 55-3070, JP JP 60-239736, JP 61-169835, JP 61-169837, JP 62-58241, JP 62-212401, JP 63-70243 JP, 63-298339, M .; P. Examples include compounds described in Hutt “Journal of Heterocyclic Chemistry” 1 (No 3), (1970) ”, and in particular, oxazole compounds substituted with a trihalomethyl group and s-triazine compounds.

  As the s-triazine compound, more preferably, an s-triazine derivative in which at least one mono-, di-, or trihalogen-substituted methyl group is bonded to the s-triazine ring, specifically, for example, 2,4,6- Tris (monochloromethyl) -s-triazine, 2,4,6-tris (dichloromethyl) -s-triazine, 2,4,6-tris (trichloromethyl) -s-triazine, 2-methyl-4,6- Bis (trichloromethyl) -s-triazine, 2-n-propyl-4,6-bis (trichloromethyl) -s-triazine, 2- (α, α, β-trichloroethyl) -4,6-bis (trichloro Methyl) -s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl) -4,6-bis (trichloro) Methyl) -s-triazine, 2- (3,4-epoxyphenyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-chlorophenyl) -4,6-bis (trichloromethyl)- s-triazine, 2- [1- (p-methoxyphenyl) -2,4-butadienyl] -4,6-bis (trichloromethyl) -s-triazine, 2-styryl-4,6-bis (trichloromethyl) -S-triazine, 2- (p-methoxystyryl) -4,6-bis (trichloromethyl) -s-triazine, 2- (pi-propyloxystyryl) -4,6-bis (trichloromethyl)- s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (4-natoxynaphthyl) -4,6-bis (trichloromethyl) s-triazine, 2-phenylthio-4,6-bis (trichloromethyl) -s-triazine, 2-benzylthio-4,6-bis (trichloromethyl) -s-triazine, 4- (o-bromo-pN) , N- (diethoxycarbonylamino) -phenyl) -2,6-di (trichloromethyl) -s-triazine, 2,4,6-tris (dibromomethyl) -s-triazine, 2,4,6-tris (Tribromomethyl) -s-triazine, 2-methyl-4,6-bis (tribromomethyl) -s-triazine, 2-methoxy-4,6-bis (tribromomethyl) -s-triazine, etc. It is done.

  Examples of the oxydiazole compound include 2-trichloromethyl-5-styryl-1,3,4-oxodiazole, 2-trichloromethyl-5- (cyanostyryl) -1,3,4-oxodiazole, 2- Examples include trichloromethyl-5- (naphth-1-yl) -1,3,4-oxodiazole, 2-trichloromethyl-5- (4-styryl) styryl-1,3,4-oxodiazole, and the like. .

  Examples of the carbonyl compound include benzophenone, Michler ketone, 2-methylbenzophenone, 3-methylbenzophenone, 4-methylbenzophenone, 2-chlorobenzophenone, 4-bromobenzophenone, 2-carboxybenzophenone and other benzophenone derivatives, 2,2-dimethoxy-2 -Phenylacetophenone, 2,2-diethoxyacetophenone, 1-hydroxycyclohexyl phenylketone, α-hydroxy-2-methylphenylpropanone, 1-hydroxy-1-methylethyl- (p-isopropylphenyl) ketone, 1-hydroxy -1- (p-dodecylphenyl) ketone, 2-methyl-1- (4 ′-(methylthio) phenyl) -2-morpholino-1-propanone, 2-benzyl-2-dimethylamino-1- (4-mol Forinophenyl) -butanone-1,2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide, 1,1,1-trichloromethyl- (p-butylphenyl) ketone, 2-benzyl-2-dimethylamino- Acetophenone derivatives such as 4-morpholinobutyrophenone, thioxanthone derivatives such as thioxanthone, 2-ethylthioxanthone, 2-isopropylthioxanthone, 2-chlorothioxanthone, 2,4-dimethylthioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone And benzoic acid ester derivatives such as ethyl p-dimethylaminobenzoate and ethyl p-diethylaminobenzoate.

  Examples of the ketal compound include benzyl dimethyl ketal and benzyl-β-methoxyethyl ethyl acetal.

  Examples of the benzoin compound include m-benzoin isopropyl ether, benzoin isobutyl ether, benzoin methyl ether, methyl o-benzoylbenzoate and the like.

  Examples of the acridine compound include 9-phenylacridine, 9-pyridylacridine, 9-pyrazinylacridine, 1,2-di (9-acridinyl) ethane, 1,3-di (9-acridinyl) propane, 1,4- Di (9-acridinyl) butane, 1,5-di (9-acridinyl) pentane, 1,6-di (9-acridinyl) hexane, 1,7-di (9-acridinyl) heptane, 1,8-di ( 9-acridinyl) octane, 1,9-di (9-acridinyl) nonane, 1,10-di (9-acridinyl) decane, 1,11-di (9-acridinyl) undecane, 1,12-di (9- Acridinyl) dodecane and other di (9-acridinyl) alkanes.

  Examples of the organic peroxide compound include trimethylcyclohexanone peroxide, acetylacetone peroxide, 1,1-bis (tert-butylperoxy) -3,3,5-trimethylcyclohexane, 1,1-bis (tert-butylperoxide). Oxy) cyclohexane, 2,2-bis (tert-butylperoxy) butane, tert-butyl hydroperoxide, cumene hydroperoxide, diisopropylbenzene hydroperoxide, 2,5-dimethylhexane-2,5-dihydroper Oxide, 1,1,3,3-tetramethylbutyl hydroperoxide, tert-butylcumyl peroxide, dicumyl peroxide, 2,5-dimethyl-2,5-di (tert-butylperoxy) hexane, 2 , -Oxanoyl peroxide, oxalic acid peroxide, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, diisopropyl peroxydicarbonate, di-2-ethylhexyl peroxydicarbonate, di-2-ethoxyethyl peroxydicarbonate , Dimethoxyisopropyl peroxycarbonate, di (3-methyl-3-methoxybutyl) peroxydicarbonate, tert-butyl peroxyacetate, tert-butyl peroxypivalate, tert-butyl peroxyneodecanoate, tert- Butyl peroxyoctanoate, tert-butyl peroxylaurate, tersyl carbonate, 3,3 ′, 4,4′-tetra- (t-butylperoxycarbonyl) benzophenone, 3,3 ′, 4,4 -Tetra- (t-hexylperoxycarbonyl) benzophenone, 3,3 ', 4,4'-tetra- (p-isopropylcumylperoxycarbonyl) benzophenone, carbonyldi (t-butylperoxydihydrogen diphthalate), And carbonyldi (t-hexylperoxydihydrogen diphthalate).

  Examples of the azo compound include azo compounds described in JP-A-8-108621.

  Examples of the coumarin compound include 3-methyl-5-amino-((s-triazin-2-yl) amino) -3-phenylcoumarin, 3-chloro-5-diethylamino-((s-triazin-2-yl). ) Amino) -3-phenylcoumarin, 3-butyl-5-dimethylamino-((s-triazin-2-yl) amino) -3-phenylcoumarin, and the like.

  Examples of the azide compound include organic azide compounds described in U.S. Pat. No. 2,848,328, U.S. Pat. No. 2,852,379 and U.S. Pat. No. 2,940,553, 2,6-bis (4-azidobenzylidene) -4-ethyl. And cyclohexanone (BAC-E).

  As the hexaarylbiimidazole compound, for example, JP-B-6-29285, US Pat. Nos. 3,479,185, 4,311,783, 4,622,286, etc. And, specifically, 2,2′-bis (o-chlorophenyl) -4,4 ′, 5,5′-tetraphenylbiimidazole, 2,2′-bis (o-bromophenyl) )) 4,4 ′, 5,5′-tetraphenylbiimidazole, 2,2′-bis (o, p-dichlorophenyl) -4,4 ′, 5,5′-tetraphenylbiimidazole, 2,2 ′ -Bis (o-chlorophenyl) -4,4 ', 5,5'-tetra (m-methoxyphenyl) biidazole, 2,2'-bis (o, o'-dichlorophenyl) -4,4', 5,5 '-Tetraphenylbi Dazole, 2,2′-bis (o-nitrophenyl) -4,4 ′, 5,5′-tetraphenylbiimidazole, 2,2′-bis (o-methylphenyl) -4,4 ′, 5 Examples include 5′-tetraphenylbiimidazole, 2,2′-bis (o-trifluorophenyl) -4,4 ′, 5,5′-tetraphenylbiimidazole, and the like.

  Examples of the organic borate compound include, for example, JP-A-62-143044, JP-A-62-1050242, JP-A-9-188865, JP-A-9-188686, and JP-A-9-188710. Publications, JP 2000-131837 A, JP 2002-107916 A, Japanese Patent No. 2764769, Japanese Patent Application No. 2000-310808, and Kunz, Martin “Rad Tech '98. Proceeding April 19 -22, 1998, Chicago ”etc., organic boron sulfonium complexes or organic boron described in JP-A-6-157623, JP-A-6-175564, and JP-A-6-175561. Oxosulfonium complex, JP-A-6-175554 JP, JP-A-6-175553, organoboron iodonium complex, JP-A-9-188710, organoboron phosphonium complex, JP-A-6-348011, JP-A-7-128785, JP Specific examples include organoboron transition metal coordination complexes such as 7-140589, JP-A-7-306527, and JP-A-7-292014.

  Examples of the disulfone compound include compounds described in JP-A No. 61-166544 and Japanese Patent Application No. 2001-132318.

  Examples of oxime ester compounds include J.M. C. S. Perkin II (1979) 1653-1660), J. MoI. C. S. Perkin II (1979) 156-162, Journal of Photopolymer Science and Technology (1995) 202-232, JP-A 2000-66385, JP-A 2000-80068, JP-T 2004-534797 And the compounds described. As commercially available products, Irgacure OXE-01 and OXE-02 manufactured by Ciba Specialty Chemicals are suitable.

  In the present invention, an oxime ester compound represented by the following general formula (2) or (3) is also suitable.

In the general formulas (2) and (3), R ₁ and R ₂ each independently represent a monovalent substituent, X represents a monovalent substituent or a hydrogen atom, and A represents a divalent organic group. Ar represents an aryl group.
Preferred specific examples of the oxime ester compound represented by the above general formula are shown below.

  Among these, the following are particularly preferable from the viewpoint of being easily dissolved in a solvent and having good productivity at the stage of preparing the colored photosensitive composition.

  Examples of onium salt compounds include S.I. I. Schlesinger, Photogr. Sci. Eng. , 18, 387 (1974), T.A. S. Diazonium salts described in Bal et al, Polymer, 21, 423 (1980), ammonium salts described in US Pat. No. 4,069,055, JP-A-4-365049, etc., US Pat. No. 4,069 , 055, 4,069,056, phosphonium salts described in European Patent Nos. 104,143, U.S. Pat. Nos. 339,049, 410,201. And iodonium salts described in JP-A-2-150848 and JP-A-2-296514.

  The iodonium salt that can be suitably used in the present invention is a diaryl iodonium salt, and is preferably substituted with two or more electron donating groups such as an alkyl group, an alkoxy group, and an aryloxy group from the viewpoint of stability. . In addition, as another preferable form of the sulfonium salt, an iodonium salt in which one substituent of the triarylsulfonium salt has a coumarin or an anthraquinone structure and absorption at 300 nm or more is preferable.

Examples of the sulfonium salt that can be suitably used in the present invention include European Patent Nos. 370,693, 390,214, 233,567, 297,443, and 297. 442, U.S. Pat. Nos. 4,933,377, 161,811, 410,201, 339,049, 4,760,013 No. 4,734,444, No. 2,833,827, German Patent No. 2,904,626, No. 3,604,580, No. 3,604 Examples thereof include sulfonium salts described in each specification of No. 581. From the viewpoint of stability, it is preferably substituted with an electron-withdrawing group. The electron withdrawing group preferably has a Hammett value greater than zero. Preferred electron-withdrawing groups include halogen atoms and carboxylic acids.
Other preferable sulfonium salts include sulfonium salts in which one substituent of the triarylsulfonium salt has a coumarin or anthraquinone structure and absorbs at 300 nm or more. As another preferable sulfonium salt, a sulfonium salt in which the triarylsulfonium salt has an allyloxy group or an arylthio group as a substituent and has absorption at 300 nm or more can be mentioned.

Moreover, as an onium salt compound, J.M. V. Crivello et al, Macromolecules, 10 (6), 1307 (1977), J. MoI. V. Crivello
et al, J. et al. Polymer Sci. , Polymer Chem. Ed. , 17, 1047 (1979), a selenonium salt described in C.I. S. Wen et al, Teh, Proc. Conf. Rad. Curing ASIA, p478 Tokyo, Oct (1988), and onium salts such as arsonium salts.

  Examples of the acylphosphine (oxide) compound include Irgacure 819, Darocur 4265, Darocur TPO and the like manufactured by Ciba Specialty Chemicals.

  As photopolymerization initiators, from the viewpoint of exposure sensitivity, trihalomethyltriazine compounds, benzyldimethylketal compounds, α-hydroxyketone compounds, α-aminoketone compounds, acylphosphine compounds, phosphine oxide compounds, metallocene compounds, oximes Compounds, triallylimidazole dimers, onium compounds, benzothiazole compounds, benzophenone compounds, acetophenone compounds and derivatives thereof, cyclopentadiene-benzene-iron complexes and salts thereof, halomethyloxadiazole compounds, 3-aryl substitution Compounds selected from the group consisting of coumarin compounds are preferred.

More preferably, they are trihalomethyltriazine compounds, α-aminoketone compounds, acylphosphine compounds, phosphine oxide compounds, oxime compounds, triallylimidazole dimers, onium compounds, benzophenone compounds, acetophenone compounds, and trihalo. Most preferred is at least one compound selected from the group consisting of a methyltriazine compound, an α-aminoketone compound, an oxime compound, a triallylimidazole dimer, and a benzophenone compound.
Specific examples of the other preferable photopolymerization initiators include 4- [o-bromo-pN, N-di (ethoxycarbonyl) aminophenyl] -2,6-di (trichloromethyl) -s-triazine). Is mentioned. Moreover, as a commercial item of a suitable photoinitiator, Irgacure-184, Irgacure-369, Irgacure-379, Irgacure-651, Irgacure-907, Irgacure-819 (above, the product made by Ciba Specialty Chemicals), Darocur 4265, Darocur TPO (Merck), Adeka 1717 (Asahi Denka Kogyo), 2,2′-bis (o-chlorophenyl) -4,5,4′-tetraphenyl-1,2′-biimidazole (Kurokin Kasei) Product), EABF (manufactured by Hodogaya Chemical Co., Ltd.) and the like.
The photoinitiator used for the coloring photosensitive composition of this invention can be used 1 type or in combination of 2 or more types. When an initiator that does not absorb at the exposure wavelength is used, it is necessary to use a compound that absorbs at the exposure wavelength as a sensitizer.

  The content of the photopolymerization initiator is preferably in the range of 0.1% by mass to 20% by mass, more preferably 0.5% by mass to 15% by mass with respect to the total solid content in the colored photosensitive composition layer. %, Particularly preferably in the range of 1% by mass to 10% by mass. Within this range, good sensitivity and pattern formability can be obtained.

[Alkali-soluble resin]
The colored photosensitive composition of the present invention preferably contains at least one alkali-soluble resin. Alkali-soluble resins can be contained in the stage of adjusting the pigment dispersion composition, and can be added separately in both the stage of adjusting the pigment dispersion composition and the stage of adjusting the colored photosensitive composition. It is.
The alkali-soluble resin is a linear organic polymer, and promotes at least one alkali-solubility in a molecule (preferably a molecule having an acrylic copolymer or a styrene copolymer as a main chain). It can be appropriately selected from alkali-soluble resins having a group (for example, carboxyl group, phosphoric acid group, sulfonic acid group, etc.). Of these, more preferred are those which are soluble in an organic solvent and can be developed with a weak alkaline aqueous solution.

  For example, a known radical polymerization method can be applied to the production of the alkali-soluble resin. Polymerization conditions such as temperature, pressure, type and amount of radical initiator, type of solvent, etc. when producing an alkali-soluble resin by radical polymerization can be easily set by those skilled in the art, and the conditions are determined experimentally. It can also be done.

  As said linear organic high molecular polymer, the polymer which has carboxylic acid in a side chain is preferable. For example, JP-A-59-44615, JP-B-54-34327, JP-B-58-12777, JP-B-54-25957, JP-A-59-53836, JP-A-59-71048 As described, methacrylic acid copolymer, acrylic acid copolymer, itaconic acid copolymer, crotonic acid copolymer, maleic acid copolymer, partially esterified maleic acid copolymer, etc., and side chain Examples include acidic cellulose derivatives having a carboxylic acid, polymers having a hydroxyl group, and acid anhydrides added to a polymer having a hydroxyl group, and polymer weight having an unsaturated bond site such as a (meth) acryloyl group or an allyl group in the side chain. Coalescence is also preferred.

  Of these, benzyl (meth) acrylate / (meth) acrylic acid copolymers and multi-component copolymers composed of benzyl (meth) acrylate / (meth) acrylic acid / other monomers are particularly suitable. In addition, those obtained by copolymerizing 2-hydroxyethyl methacrylate are also useful. The polymer can be used by mixing in an arbitrary amount.

  In addition to the above, 2-hydroxypropyl (meth) acrylate / polystyrene macromonomer / benzyl methacrylate / methacrylic acid copolymer, 2-hydroxy-3-phenoxypropyl acrylate / polymethyl methacrylate described in JP-A-7-140654 Macromonomer / benzyl methacrylate / methacrylic acid copolymer, 2-hydroxyethyl methacrylate / polystyrene macromonomer / methyl methacrylate / methacrylic acid copolymer, 2-hydroxyethyl methacrylate / polystyrene macromonomer / benzyl methacrylate / methacrylic acid copolymer, etc. Is mentioned.

  As a specific structural unit of the alkali-soluble resin, a copolymer of (meth) acrylic acid and another monomer copolymerizable therewith is particularly suitable.

  Examples of the other monomer copolymerizable with (meth) acrylic acid include alkyl (meth) acrylate, aryl (meth) acrylate, and vinyl compounds. Here, the hydrogen atom of the alkyl group and the aryl group may be substituted with a substituent.

  Specific examples of the alkyl (meth) acrylate and aryl (meth) acrylate include methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, isobutyl (meth) acrylate, pentyl ( Examples include meth) acrylate, hexyl (meth) acrylate, octyl (meth) acrylate, phenyl (meth) acrylate, benzyl acrylate, tolyl acrylate, naphthyl acrylate, and cyclohexyl acrylate.

Examples of the vinyl compound include styrene, α-methylstyrene, vinyl toluene, glycidyl methacrylate, acrylonitrile, vinyl acetate, N-vinyl pyrrolidone, tetrahydrofurfuryl methacrylate, polystyrene macromonomer, polymethyl methacrylate macromonomer, CH ₂ ═CR. ³¹ R ³² [wherein R ³¹ represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, and R ³² represents an aromatic hydrocarbon ring having 6 to 10 carbon atoms. ^{_{], CH 2 = C (R 31}} ) (COOR 33) ^{[wherein, R 31} represents a hydrogen atom or an alkyl group of 1 to 5 carbon ^{atoms, R 33} is several alkyl group or C 1 to 8 carbon atoms 6 Represents -12 aralkyl groups. ], Etc. can be mentioned.

These other copolymerizable monomers can be used singly or in combination of two or more. Other preferred copolymerizable monomers are selected from CH ₂ ═CR ³¹ R ³² , CH ₂ ═C (R ³¹ ) (COOR ³³ ), phenyl (meth) acrylate, benzyl (meth) acrylate and styrene. It is at least one, and particularly preferably, CH ₂ = CR ³¹ R ³² and / or CH ₂ = C (R ³¹ ) (COOR ³³ ). These R ³¹ , R ³² and R ³³ are as defined above.

  As content of alkali-soluble resin in a coloring photosensitive composition, 1-20 mass% is preferable with respect to the total solid of this composition, More preferably, it is 2-15 mass%, Most preferably, it is 3 ˜12% by mass.

[Sensitizing dye]
From the viewpoint of improving sensitivity, it is preferable to add a sensitizing dye to the photosensitive resin composition used in the present invention. Exposure to a wavelength that can be absorbed by the sensitizing dye promotes radical generation reaction of the polymerization initiator component and polymerization reaction of the polymerizable compound thereby.
Examples of such a sensitizing dye include a known spectral sensitizing dye or dye, or a dye or pigment that absorbs light and interacts with a photopolymerization initiator.

  Preferred spectral sensitizing dyes or dyes that can be used in the present invention include polynuclear aromatics (eg, pyrene, perylene, triphenylene), xanthenes (eg, fluorescein, eosin, erythrosine, rhodamine B, Rose bengal), cyanines (for example, thiacarbocyanine, oxacarbocyanine), merocyanines (for example, merocyanine, carbomerocyanine), thiazines (for example, thionine, methylene blue, toluidine blue), acridines (for example, acridine orange, Chloroflavin, acriflavine), phthalocyanines (eg, phthalocyanine, metal phthalocyanine), porphyrins (eg, tetraphenylporphyrin, central metal-substituted porphyrin), chlorophylls (eg, chlorophyllin) Phil, chlorophyllin, center metal-substituted chlorophyll), metal complexes, anthraquinones (e.g., anthraquinone), squaryliums (e.g., squarylium), and the like.

Other preferred embodiments of the sensitizing dye include dyes belonging to the following compound group and having a maximum absorption wavelength at 350 to 450 nm.
For example, polynuclear aromatics (eg, pyrene, perylene, triphenylene), xanthenes (eg, fluorescein, eosin, erythrosine, rhodamine B, rose bengal), cyanines (eg, thiacarbocyanine, oxacarbocyanine), merocyanine (Eg, merocyanine, carbomerocyanine), thiazines (eg, thionine, methylene blue, toluidine blue), acridines (eg, acridine orange, chloroflavin, acriflavine), anthraquinones (eg, anthraquinone), squalium (eg, , Squalium).

(Thiol compound)
The thiol compound acts as a co-sensitizer or has an effect of improving the adhesion with the substrate. The co-sensitizer has functions such as further improving the sensitivity of the sensitizing dye and the photopolymerization initiator to actinic radiation, or suppressing polymerization inhibition by oxygen of the ethylenically unsaturated compound.
Specific examples of the thiol compound include ethylene glycol bisthiopropionate (EGTP), butanediol bisthiopropionate (BDTP), trimethylolpropane tristhiopropionate (TMTP), pentaerythritol tetrakisthiopropionate ( PETP), mercaptopropionic acid derivatives such as THEIC-BMPA represented by the following formula; ethylene glycol bisthioglycolate (EGTG), butanediol bisthioglycolate (BDTG), hexanediol bisthioglycolate (HDTG), triglyceride Thioglycolic acid derivatives such as methylolpropane tristhioglycolate (TMTG) and pentaerythritol tetrakisthioglycolate (PETG); 1,2-benzenedithiol, 1,3-benzene Thiol, 1,2-ethanedithiol, 1,3-propanedithiol, 1,6-hexamethylenedithiol, 2,2 ′-(ethylenedithio) diethanethiol, meso-2,3-dimercaptosuccinic acid, p- Examples include thiols such as xylenedithiol and m-xylenedithiol; mercaptoethers such as di (mercaptoethyl) ether. These can be used alone or in combination of two or more.

  As for the thiol compound used by this invention, what is represented by the following general formula (I) is more preferable.

In general formula (I), R represents a hydrogen atom, an alkyl group, or an aryl group, and A ² represents an atomic group that forms a heterocycle with N═C—N.

In general formula (I), R represents an alkyl group or an aryl group.
Examples of the alkyl group include linear, branched, or cyclic alkyl groups having 1 to 20 carbon atoms, linear groups having 1 to 12 carbon atoms, and 3 to 12 carbon atoms. More preferred are branched alkyl groups and cyclic alkyl groups having 5 to 10 carbon atoms. Specific examples thereof include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, hexadecyl group, octadecyl group. , Eicosyl group, isopropyl group, isobutyl group, s-butyl group, t-butyl group, isopentyl group, neopentyl group, 1-methylbutyl group, isohexyl group, 2-ethylhexyl group, 2-methylhexyl group, cyclohexyl group, cyclopentyl group , 2-norbornyl group and the like.

  Examples of the aryl group include a monocyclic structure, one to three benzene rings forming a condensed ring, and a benzene ring and a five-membered unsaturated ring forming a condensed ring. Specific examples include a phenyl group, a naphthyl group, an anthryl group, a phenanthryl group, an indenyl group, an acenaphthenyl group, a fluorenyl group, and the like. Among these, a phenyl group and a naphthyl group are more preferable.

In General Formula (I), A ² represents an atomic group that forms a heterocycle with N═C—N.
Examples of atoms constituting this atomic group include a carbon atom, a nitrogen atom, a hydrogen atom, a sulfur atom, and a selenium atom.
The heterocyclic ring formed by A ² and N═C—N may further have a substituent, and the substituent that can be introduced is a substituent that can be introduced into the alkyl group or aryl group. The same thing is mentioned.

  Moreover, as a thiol compound, More preferably, it is represented by the following general formula (II) or general formula (III).

In general formula (II), R ¹ represents an aryl group, and X ¹ represents a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, or an aryl group.
In the general formula (III), ^{R 2} represents an alkyl group, or aryl group, ^{X 1} has the same meaning as ^{X 1} in the general formula (II).

  As a halogen atom in general formula (II) and (III), a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom are preferable.

The alkyl group in general formula (II) and (III) is synonymous with the alkyl group represented by R of general formula (I), and its preferable range is also the same.
Moreover, the aryl group in general formula (II) and (III) is synonymous with the aryl group represented by R of general formula (I), The preferable range is also the same.

  Each group in the general formulas (II) and (III) may further have a substituent, and the substituent can be introduced into the alkyl group or aryl group represented by R in the general formula (I). These are the same as those listed as examples of the substituent.

In general formulas (II) and (III), X ¹ is more preferably a hydrogen atom from the viewpoint of solubility in propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA as appropriate).
In general formula (II), R ¹ is most preferably a phenyl group from the viewpoints of sensitivity and PGMEA solubility.
In general formula (III), R ² is more preferably a methyl group, an ethyl group, a phenyl group, or a benzyl group from the viewpoints of sensitivity and PGMEA solubility.

  Of the general formulas (II) and (III), the compound represented by the general formula (III) is most preferable from the viewpoint of solubility of PGMEA.

  These thiol compounds are described in J. Org. Appl. Chem. , 34, 2203-2207 (1961).

  In the colored photosensitive composition of the present invention, the compound represented by the general formula (I) may be used alone or in combination of two or more, and is represented by the general formula (II). A compound selected from the above compounds, a compound selected from the compounds represented by the general formula (III), and a compound selected from:

  The content of the thiol compound in the colored photosensitive composition is preferably 0.1 to 5.0% by mass and preferably 0.2 to 4% by mass with respect to the total solid content of the composition. More preferred. Within this range, the polymerizability is not impaired, which is preferable.

〔solvent〕
In general, the colored photosensitive composition of the present invention can be suitably prepared using a solvent together with the above components.
Examples of the solvent include esters such as ethyl acetate, n-butyl acetate, isobutyl acetate, amyl formate, isoamyl acetate, isobutyl acetate, butyl propionate, isopropyl butyrate, ethyl butyrate, butyl butyrate, alkyl esters, methyl lactate, and lactic acid. Ethyl, methyl oxyacetate, ethyl oxyacetate, butyl oxyacetate, methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate, and methyl 3-oxypropionate and ethyl 3-oxypropionate 3-oxypropionic acid alkyl esters (for example, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate), and 2-oxypropionic acid 2-oxypropionic acid alkyl esters such as til, ethyl 2-oxypropionate, and propyl 2-oxypropionate (eg, methyl 2-methoxypropionate, ethyl 2-methoxypropionate, propyl 2-methoxypropionate, Methyl 2-ethoxypropionate, ethyl 2-ethoxypropionate, methyl 2-oxy-2-methylpropionate, ethyl 2-oxy-2-methylpropionate, methyl 2-methoxy-2-methylpropionate, 2-ethoxy 2-methyl methyl propionate), and methyl pyruvate, ethyl pyruvate, propyl pyruvate, methyl acetoacetate, ethyl acetoacetate, methyl 2-oxobutanoate, ethyl 2-oxobutanoate and the like;

Ethers such as diethylene glycol dimethyl ether, tetrahydrofuran, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, methyl cellosolve acetate, ethyl cellosolve acetate, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol methyl ether acetate, propylene glycol ethyl Ether acetate, propylene glycol propyl ether acetate, etc .;
Ketones such as methyl ethyl ketone, cyclohexanone, 2-heptanone, and 3-heptanone; aromatic hydrocarbons such as toluene and xylene.

Of these, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, cyclohexanone, ethyl carbitol acetate, butyl Carbitol acetate, propylene glycol methyl ether acetate and the like are suitable.
A solvent may be used independently and may be used in combination of 2 or more type.

[Other ingredients]
In the colored photosensitive composition of the present invention, if necessary, a fluorine-based organic compound, a thermal polymerization inhibitor, a colorant, other fillers, a polymer compound other than an alkali-soluble resin, a surfactant, an adhesion promoter, Various additives such as an antioxidant, an ultraviolet absorber and an anti-aggregation agent can be contained.
Hereinafter, preferable combination components will be described.

<Fluorine organic compounds>
By containing a fluorinated organic compound, the liquid properties (particularly fluidity) of the coating liquid can be improved, and the uniformity of the coating thickness and the liquid-saving property can be improved. That is, the interfacial tension between the substrate and the coating liquid is reduced to improve the wettability to the substrate and the coating property to the substrate is improved, so that a thin film of about several μm is formed with a small amount of liquid. This is also effective in that a film having a uniform thickness with small thickness unevenness can be formed.

  3-40 mass% is suitable for the fluorine content rate of a fluorine-type organic compound, More preferably, it is 5-30 mass%, Most preferably, it is 7-25 mass%. When the fluorine content is within the above range, it is effective in terms of coating thickness uniformity and liquid-saving properties, and the solubility in the composition is also good.

  Examples of the fluorinated organic compound include MegaFuck F171, F172, F173, F177, F141, F142, F143, F144, R30, and F437 (above, Dainippon Ink and Chemicals, Inc.) Manufactured), FLORARD FC430, FC431, FC171 (above, manufactured by Sumitomo 3M), Surflon S-382, SC-101, SC-103, SC-104, SC-105, SC1068, SC-381, SC-383, S393, and KH-40 (manufactured by Asahi Glass Co., Ltd.).

Fluorine-based organic compounds are particularly effective in preventing coating unevenness and thickness unevenness when, for example, a coating film to be formed is thinned. It is also effective in slit coating that easily causes liquid breakage.
The addition amount of the fluorinated organic compound is preferably 0.001 to 2.0% by mass, more preferably 0.005 to 1.0% by mass, with respect to the total mass of the pigment dispersion composition or the colored photosensitive composition. It is.

<Thermal polymerization initiator>
It is also effective to contain a thermal polymerization initiator in the colored photosensitive composition of the present invention. Examples of the thermal polymerization initiator include various azo compounds and peroxide compounds. Examples of the azo compounds include azobis compounds. Examples of the peroxide compounds include ketones. Examples thereof include peroxides, peroxyketals, hydroperoxides, dialkyl peroxides, diacyl peroxides, peroxyesters, peroxydicarbonates, and the like.

<Surfactant>
The colored photosensitive composition of the present invention is preferably composed of various surfactants from the viewpoint of improving coatability, and various nonionic, cationic, and anionic surfactants can be used. Among these, a nonionic surfactant and a fluorosurfactant having a perfluoroalkyl group are preferable.
Specific examples of the fluorosurfactant include Megafac (registered trademark) series manufactured by Dainippon Ink and Chemicals, Inc., and Fluorard (registered trademark) series manufactured by 3M.

  In addition to the above, in the colored photosensitive composition, as specific examples of additives, fillers such as glass and alumina; itaconic acid copolymer, crotonic acid copolymer, maleic acid copolymer, partially esterified maleic acid Copolymers, acidic cellulose derivatives, polymers having hydroxyl groups, acid anhydrides added, alcohol-soluble nylons, alkali-soluble resins such as phenoxy resins formed from bisphenol A and epichlorohydrin; , Anionic surfactants, specifically phthalocyanine derivatives (commercial product EFKA-745 (manufactured by Morishita Sangyo)); organosiloxane polymer KP341 (manufactured by Shin-Etsu Chemical Co., Ltd.), (meth) acrylic acid (co) Polymer Polyflow No. 75, no. 90, no. Cationic surfactants such as 95 (manufactured by Kyoeisha Yushi Chemical Co., Ltd.) and W001 (manufactured by Yusho Co., Ltd.);

  Examples of other additives include Adeka Pluronic L31, F38, L42, L44, L61, L64, F68, L72, P95, F77, P84, F87, P94, L101, P103, F108, L121, P-123 (Asahi Denka) ) And Isonet S-20 (manufactured by Sanyo Chemical Co., Ltd.); UV absorbers such as 2- (3-tert-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole and alkoxybenzophenone; and poly Examples thereof include an aggregation inhibitor such as sodium acrylate.

Further, when the alkali solubility of the uncured part is promoted and the developability of the colored photosensitive composition is further improved, the colored photosensitive composition contains an organic carboxylic acid, preferably a low molecular weight organic compound having a molecular weight of 1000 or less. Carboxylic acid can be added.
Specifically, for example, aliphatic monocarboxylic acids such as formic acid, acetic acid, propionic acid, butyric acid, valeric acid, pivalic acid, caproic acid, diethyl acetic acid, enanthic acid, caprylic acid; oxalic acid, malonic acid, succinic acid, Aliphatic dicarboxylic acids such as glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, brassic acid, methylmalonic acid, ethylmalonic acid, dimethylmalonic acid, methylsuccinic acid, tetramethylsuccinic acid, citraconic acid; Aliphatic tricarboxylic acids such as tricarballylic acid, aconitic acid, camphoric acid; aromatic monocarboxylic acids such as benzoic acid, toluic acid, cumic acid, hemelitic acid, mesitylene acid; phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, Aromatic polycarboxylic acids such as trimesic acid, melophanoic acid, pyromellitic acid; phenylacetic acid Hydratropic acid, hydrocinnamic acid, mandelic acid, phenyl succinic acid, atropic acid, cinnamic acid, methyl cinnamate, benzyl cinnamate, cinnamylidene acetic acid, coumaric acid, other carboxylic acids such as umbellic acid.

(Heat crosslinkable compound)
In the present invention, the thermally crosslinkable compound refers to a compound that thermally crosslinks with the carboxyl group of the alkali-soluble resin, and the crosslink density is increased by thermal crosslinking, and the chemical resistance of the formed colored cured film is improved. .
Examples of the thermally crosslinkable compound that can be used in the present invention include bisphenol A type, cresol novolac type, biphenyl type, epoxy compound of alicyclic epoxy compound, and the like. May be.

  Specific examples of the epoxy compound include, for example, epphenol YD-115, YD-118T, YD-127, YD-128, YD-134, YD-8125, YD-7011R, ZX-1059, as bisphenol A type. YDF-8170, YDF-170 and the like (manufactured by Tohto Kasei), Denacor EX-1101, EX-1102, EX-1103 and the like (manufactured by Nagase Kasei), Plaxel GL-61, GL-62, G101, G102 (and above, Daicel) In addition to (made by Chemical), these similar bisphenol F type and bisphenol S type can also be mentioned. Epoxy acrylates such as Ebecryl 3700, 3701, and 600 (manufactured by Daicel UC) can also be used.

  As cresol novolak type, Epototo YDPN-638, YDPN-701, YDPN-702, YDPN-703, YDPN-704, etc. (above made by Tohto Kasei), Denacol EM-125, etc. (above made by Nagase Kasei), biphenyl type 3,5,3 ′, 5′-tetramethyl-4,4′diglycidylbiphenyl and the like.

  Examples of the alicyclic epoxy compounds include Celoxide 2021, 2081, 2083, 2085, Epolide GT-301, GT-302, GT-401, GT-403, EHPE-3150 (manufactured by Daicel Chemical), Santo Tote ST-3000, ST. -4000, ST-5080, ST-5100 (manufactured by Tohto Kasei) and the like. In addition, Epototo YH-434 and YH-434L, which are amine type epoxy resins, glycidyl ester in which dimer acid is modified in the skeleton of bisphenol A type epoxy resin can be used.

  Among these thermally crosslinkable compounds, an alicyclic epoxy compound or a novolak type epoxy compound represented by the following general formula (I) is preferable, and an epoxy equivalent of 150 to 220 is particularly preferable. Such materials include Daicel Chemical's Celoxide 2021, 2081, 2083, 2085, Epolide GT-301, GT-302, GT-401, GT-403, EHPE-3150, DIC Corporation Epicron N-660, N-665. N-670, N-673, N-680, N-690, N-695, N-685-EXP, N-672-EXP, N-655-EXP-S, N-865, N-865-80M YDCN-701, YDCN-702, YDCN-703, YDCN-704, YDCN-704L, etc. can be used, Celoxide 2021, 2083, 2085, EHPE-3150, Epicron N-660, N-665, N-670 N-673, N-680, N-690, N-695, YDCN-704L, etc. Preferably one.

  In said formula, l is an integer of 5-100, R represents a hydrogen atom or a methyl group each independently.

In the composition of this invention, you may contain 2 or more types of polyfunctional epoxy compounds.
As content in the curable composition of the polyfunctional epoxy compound based on this invention, 2-20 mass% is preferable with respect to the total solid except a pigment, and 3-10 mass% is more preferable. When the content is within the above range, the solvent resistance of the film is excellent. Moreover, when too large, the yellow color after baking will impair the quality of a color filter, and when too small, the problem that it is inferior to NMP resistance will arise.

<Thermal polymerization inhibitor>
It is preferable to further add a thermal polymerization inhibitor to the colored photosensitive composition of the present invention. For example, hydroquinone, p-methoxyphenol, di-t-butyl-p-cresol, pyrogallol, t-butylcatechol, Benzoquinone, 4,4′-thiobis (3-methyl-6-tert-butylphenol), 2,2′-methylenebis (4-methyl-6-tert-butylphenol), 2-mercaptobenzimidazole and the like are useful.

  The colored photosensitive composition of the present invention contains (D) a polymerizable compound and (E) a photopolymerization initiator (preferably together with an alkali-soluble resin and a solvent) in the pigment dispersion composition of the present invention described above. It can be prepared by mixing an additive such as a surfactant as necessary.

<Color filter and manufacturing method thereof>
The method for producing a color filter of the present invention includes a photosensitive film forming step of forming the photosensitive film by applying the above-described colored photosensitive composition of the present invention onto a substrate directly or via another layer; And a colored pattern forming step of forming a colored pattern by sequentially performing pattern exposure and development on the formed photosensitive film. By this manufacturing method, the colored curable composition of the present invention is provided. Thus, the color filter of the present invention having a colored pattern with excellent pigment dispersibility and contrast and improved brightness is obtained.

The color filter of the present invention was colored directly on a substrate such as glass or through another layer such as an undercoat layer or an adhesion improving layer using the colored photosensitive composition of the present invention described above. It is produced by forming a film (colored pattern). Hereinafter, the manufacturing method of the color filter of the present invention will be described in the order of steps with an example.
(Formation of colored photosensitive composition layer)
For example, the colored photosensitive composition of the present invention is applied to the substrate directly or via another layer to form a photosensitive composition layer.
The photosensitive composition can be applied by a conventional method, and is preferably applied by a coating method such as spin coating, slit coating, cast coating, or roll coating.
Drying (pre-baking) of the film with the colored photosensitive composition of the present invention applied (preferably applied) on the substrate is performed under conditions of 10 to 300 seconds in a temperature range of 50 to 140 ° C. using a hot plate, an oven or the like. Can be done.

  When the colored photosensitive composition of the present invention is applied to a substrate to form a film, the dry thickness of the film is generally 0.3 to 5.0 μm, preferably 0.5 to 3.5 μm, Most desirably, the thickness is 1.0 to 2.5 μm.

(Pattern exposure)
Next, pattern exposure is performed on the formed photosensitive composition layer by a method such as through a predetermined mask pattern. By this pattern exposure, the exposed area is cured.
In this case, the radiation used for exposure is particularly preferably ultraviolet rays such as g-line, h-line, i-line, and j-line.
(developing)
A colored pattern (for example, colored pixel) is formed by developing and removing the uncured portion with a developer after pattern exposure. As will be described later, the color pattern is sequentially formed for each color (for example, 3 colors or 4 colors), and a color filter having colored pixels of 3 colors or 4 colors is obtained.
In development, the uncured part after exposure is eluted in the developer, leaving only the cured part. The development temperature is usually 20 to 30 ° C., and the development time is 20 to 90 seconds.
Any developer can be used as long as it dissolves the colored photosensitive composition film in the uncured portion while not dissolving the cured portion. Specifically, a combination of various organic solvents or an alkaline aqueous solution can be used.

  As said organic solvent, what was enumerated as the above-mentioned solvent which can be used when preparing the pigment dispersion composition or colored photosensitive composition of this invention is mentioned.

Examples of the alkaline aqueous solution include sodium hydroxide, potassium hydroxide, sodium carbonate, sodium hydrogencarbonate, sodium oxalate, sodium metasuccinate, aqueous ammonia, ethylamine, diethylamine, dimethylethanolamine, tetramethylammonium hydroxide, Concentration of an alkaline compound such as tetraethylammonium hydroxide, choline, pyrrole, piperidine, 1,8-diazabicyclo- [5,4,0] -7-undecene, in a concentration of 0.001 to 10% by mass, preferably 0.01 to An alkaline aqueous solution dissolved so as to be 1% by mass can be mentioned.
In addition, when alkaline aqueous solution is used as a developing solution, generally it wash | cleans (rinse) with water after image development.

After the development, excess developer is washed away, dried, and then generally heated (post-baked) at a temperature of 100 to 250 ° C.
Post-baking is heating after development for complete curing, and is usually performed at about 200 ° C. to 250 ° C. (hard baking). This post-bake treatment is performed continuously or batchwise by using a heating means such as a hot plate, a convection oven (hot air circulation dryer), a high-frequency heater, or the like so that the coating film after development is in the above-described condition. be able to.

By repeating the above operation in accordance with the desired number of hues and sequentially repeating for each color, a color filter in which a cured film colored with a plurality of colors is formed can be produced.
A color filter can be most suitably produced by the above process.
By producing the colored photosensitive composition of the present invention in the above-described steps, a color filter used for a liquid crystal display element or a solid-state imaging element has less process difficulties, high quality and low cost. Can be produced.

  Examples of the substrate on which the colored pattern is formed include non-alkali glass, soda glass, Pyrex (registered trademark) glass, quartz glass, and those obtained by attaching a transparent conductive film to these, and solid-state imaging. Examples of the photoelectric conversion element substrate used for the element include a silicon substrate and a plastic substrate. On these substrates, usually, black stripes for isolating each pixel are formed.

The plastic substrate preferably has at least one layer selected from a gas barrier layer and a solvent resistant layer on the surface thereof.
Examples of other layers in the case where the colored photosensitive composition is applied to the substrate via another layer include a gas barrier layer and a solvent resistant layer.

  The color filter of the present invention has a colored pattern formed using the colored curable composition of the present invention, but the colored curable composition has good dispersibility and contrast of the pigment (A) contained therein, In addition, since the lightness is improved, a colored pattern having excellent hue can be formed. Therefore, it can be suitably used for a liquid crystal display element, and is suitable for a liquid crystal display element that requires an excellent hue. is there. That is, the color filter of the present invention is preferably applied to a liquid crystal display element.

<Liquid crystal display element>
The liquid crystal display element of the present invention comprises the color filter of the present invention.
More specifically, an alignment film is formed on the inner surface side of the color filter, is opposed to the electrode substrate, and the gap is filled with liquid crystal and sealed to obtain a panel which is the liquid crystal display element of the present invention.
According to an aspect of the present invention, there is provided a color filter having a high color contrast with little color unevenness, which is provided with a colored pattern in which the occurrence of color unevenness due to pigment aggregation is suppressed, the contrast is good, and the brightness is improved. By using this color filter, a liquid crystal display element having high-quality colored pixels can be provided.

<Solid-state imaging device>
The solid-state imaging device of the present invention comprises the color filter of the present invention. ADVANTAGE OF THE INVENTION According to this invention, the solid-state image sensor excellent in the color characteristic can be provided.
The configuration of the solid-state imaging device is not particularly limited as long as the configuration includes a color filter and functions as a solid-state imaging device, and examples thereof include the following configurations.
A support body has a plurality of photodiodes constituting a light receiving area of a CCD image sensor (solid-state imaging device) and a transfer electrode made of polysilicon or the like, and only the light receiving portion of the photodiode is placed on the photodiode and the transfer electrode. A light-shielding film made of tungsten or the like having an opening; a device protective film made of silicon nitride or the like formed on the light-shielding film so as to cover the entire surface of the light-shielding film and the photodiode light-receiving portion; and a color on the device protective film A configuration having a filter.
Further, a configuration having light collecting means (for example, a microlens, etc., the same applies hereinafter) on the device protective layer and under the color filter (on the side close to the support), or a structure having the light collecting means on the color filter. Etc.

EXAMPLES Hereinafter, although an Example demonstrates this invention further more concretely, it is not limited to a following example. Unless otherwise specified, “%” and “part” are based on mass.
(Synthesis Example 1: Synthesis of (B) quinophthalone compound (1))
Quinophthalone pigment (4,5,6,7-tetrachloro-2- [2- (4,5,6,7-tetrachloro-2,3-dihydro-1,3-dioxo-1H-inden-2-yl ) -8-quinolinyl] -1H-isoindole-1,3 (2H) -dione) (“Pariotol” Yellow K0961HD, manufactured by BSF, Inc.) with stirring, 15 ° C. fuming sulfuric acid (25% (SO ₃ ) was introduced into 130 g. After stirring for 3 hours, it was added onto 250 g of ice. After standing for 30 minutes, the resulting suspension was filtered and the resulting product was washed with 50 ml of water. The product was put into 330 ml of water and neutralized with an aqueous ammonia solution by adding an aqueous ammonia solution until the pH reached 7. Thereafter, 75 g of ammonium chloride was added and stirred at 80 ° C. for 30 minutes, and the deposited precipitate was filtered at 60 ° C. The obtained wet crystals were washed with water and then dried at 80 ° C. to obtain 17 g of an ammonium salt (1) of a sulfonated quinophthalone derivative.
The ammonium salt (1) of this quinophthalone derivative sulfonated product was heat-treated at 180 ° C. for 3 hours, and the quinophthalone derivative sulfonated product (2) from which the ammonium salt was removed ((B) quinophthalone compound having a specific substituent (1) according to the present invention (1) ): The following structure] 16 g (yield 94%) was obtained.

(Synthesis Example 2: (B) Synthesis of quinophthalone compound (2))
Sulfonated quinophthalone derivative (2) obtained in Synthesis Example 1 [(B) quinophthalone compound (1)] was added to 2.2 g of oxalyl chloride (manufactured by Wako Pure Chemical Industries, Ltd.) in chloroform and ice-cooled with N, N-dimethyl. 1 mL of formamide (manufactured by Wako Pure Chemical Industries, Ltd.) was added and stirred at 50 ° C. for 2 hours. The reaction mixture was added to 150 mL of water in an ice bath, the precipitated crystals were filtered, and the sulfonic acid chloride compound (3) [(B) quinophthalone compound having a specific substituent (2) according to the present invention: structure below] 7 .4 g was obtained. (Yield 72%)

(Synthesis Example 3: Synthesis of (B) Quinophthalone Compound (3))
The quinophthalone sulfonic acid chloride compound (3) obtained in Synthesis Example 2 (3) [quinophthalone compound (3) having a specific substituent (3) according to the present invention] was added to 5.0 g of 6-chloro-1- 0.9 g of hexylamine (made by Rare Chemicals) was added and stirred at room temperature for 2 hours. The reaction mixture was added to 150 mL of water, the precipitated crystals were filtered, washed with water, dried under reduced pressure, and the sulfoamidoalkyl chloride compound (4) [(B) quinophthalone compound having a specific substituent according to the present invention (3 ): The following structure] 4.3 g was obtained. (Yield 76%)

(Synthesis Example 4: Synthesis of (B) Quinophthalone Compound (4))
Excess water and anhydrous sodium sulfite (manufactured by Kanto Chemical) are added to 4.3 g of the quinophthalone sulfoamide chloride compound (4) obtained in Synthesis Example 3 ((B) quinophthalone compound (3) having a specific substituent according to the present invention)]. The amount was added and heated in an autoclave at 180 ° C. for 12 hours. After allowing to cool, the crystals were filtered to obtain 3.7 g of a sulfoamidoalkylsulfonic acid compound (5) [(B) quinophthalone compound having a specific substituent (4) according to the present invention]]. (Yield 82%)

(Synthesis Example 5: Synthesis of (B) Quinophthalone Compound (5))
To 5.0 g of the quinophthalonesulfoamidoalkylsulfonic acid compound (5) obtained in Synthesis Example 4 ((B) quinophthalone compound having a specific substituent (4) according to the present invention) was added triethylamine (sum) under ice-cooling in dichloromethane. 0.7 g (manufactured by Kosei) and 0.7 g of 4-chloro-1-butanol (manufactured by Tokyo Chemical Industry) were added and stirred at room temperature for 2 hours. The reaction mixture was added to 150 mL of water, and the precipitated crystals were filtered to obtain 3.8 g of a chloroalkyl sulfonate compound (6) [(B) quinophthalone compound (5) having a specific substituent according to the present invention]]. (Yield 69%)

(Synthesis Example 6: (B) Synthesis of quinophthalone compound (6))
To 3.8 g of the quinophthalone chloroalkylsulfonate compound (6) obtained in Synthesis Example 5 [(B) quinophthalone compound (5) having a specific substituent according to the present invention], water and anhydrous sodium sulfite (manufactured by Kanto Chemical Co., Inc.) are added in excess. The amount was added and heated in an autoclave at 180 ° C. for 12 hours. After allowing to cool, the crystals were filtered, washed with water, and dried under reduced pressure to obtain 3.2 g of a sulfonic acid compound (7) [(B) quinophthalone compound (6) having a specific substituent according to the present invention]]. (Yield 80%)

(Synthesis Example 7: Synthesis of oxime compound 1)
First, Compound A is synthesized according to the following scheme.
Ethylcarbazole (100.0 g, 0.512 mol) is dissolved in 260 ml of chlorobenzene, and after cooling to 0 ° C., aluminum chloride (70.3 g, 0.527 mol) is added. Subsequently, o-tolyl chloride (81.5 g, 0.527 mol) is added dropwise over 40 minutes, the temperature is raised to room temperature, and the mixture is stirred for 3 hours. Next, after cooling to 0 ° C., aluminum chloride (75.1 g, 0.563 mol) is added. 4-Chlorobutyryl chloride (79.4 g, 0.563 mol) is added dropwise over 40 minutes, and the mixture is warmed to room temperature and stirred for 3 hours. A mixed solution of 156 ml of 35 mass% hydrochloric acid aqueous solution and 392 ml of distilled water is cooled to 0 ° C., and the reaction solution is added dropwise. The precipitated solid was filtered with suction, washed with distilled water and methanol, and recrystallized with acetonitrile to obtain Compound A having the following structure (the following structure: yield 164.4 g, yield 77%).

Next, Compound B is synthesized using Compound A according to the following scheme.
Compound A (20.0 g, 47.9 mmol) is dissolved in 64 ml of tetrahydrofuran (hereinafter referred to as THF), and 4-chlorobenzenethiol (7.27 g, 50.2 mmol) and sodium iodide (0.7 g, 4. 79 mmol) is added. Subsequently, sodium hydroxide (2.0 g, 50.2 mmol) is added to the reaction solution and refluxed for 2 hours. Next, after cooling to 0 ° C., sodium methylate 28% methanol solution (manufactured by Nippon Shokubai Co., Ltd .: SM-28) (11.1 g, 57.4 mmol) was added dropwise over 20 minutes, and the temperature was raised to room temperature. And stir for 2 hours. Next, after cooling to 0 ° C., isopentyl nitrite (6.73 g, 57.4 mmol) is added dropwise over 20 minutes, the temperature is raised to room temperature, and the mixture is stirred for 3 hours. The reaction solution is diluted with 120 ml of acetone and added dropwise to a 0.1N hydrochloric acid aqueous solution cooled to 0 ° C. The precipitated solid was filtered with suction and washed with distilled water. Subsequently, recrystallization was performed with acetonitrile to obtain Compound B having the following structure (the following structure: yield 17.0 g, yield 64%).

Subsequently, using compound B, oxime compound 1 is synthesized by the following scheme.
Compound B (18.0 g, 32.4 mmol) was dissolved in 90 ml N-methylpyrrolidone and triethylamine (3.94 g, 38.9 mmol) was added. Next, after cooling to 0 ° C., acetyl chloride (3.05 g, 38.9 mmol) is added dropwise over 20 minutes, and then the temperature is raised to room temperature and stirred for 2 hours. The reaction solution was added dropwise to 150 ml of distilled water cooled to 0 ° C., and the precipitated solid was subjected to suction filtration, washed with 200 ml of isopropyl alcohol cooled to 0 ° C., dried, and then dried to give oxime compound 1 having the following structure (yield 19.5 g, Yield 99%).

The structure of the obtained oxime compound 1 was identified by NMR.
( ¹ H-NMR 400 MHz CDCl ₃ ): 8.86 (s, 1H), 8.60 (s, 1H), 8.31 (d, 1H, J = 8.0 Hz), 8.81 (d, 1H , J = 8.0 Hz), 7.51-7.24 (m.10H), 7.36 (q, 2H, 7.4 Hz), 3.24-3.13 (m, 4H), 2.36. (S, 3H), 2.21 (s, 3H), 1.50 (t, 3H, 7.4 Hz).

(Preparation Example 1: Fine Pigment: Preparation of Pigment (P-1))
100 parts by weight of zinc halide phthalocyanine pigment (FASTGEN A110 manufactured by DIC), 200 parts of sodium sulfate, and 600 parts of diethylene glycol were charged into a double-arm kneader and kneaded for 5 hours. The above mixture was poured into 1000 ml of water to remove the solvent and inorganic salts, and then dried in an oven to obtain a fine pigment (P-1). When the average primary particle diameter of the obtained pigment was observed with TEM, the particle diameter was 23 nm.
(Preparation Example 2 of Finer Pigment: Production of Pigment (P-2))
A refined pigment (P-2) is obtained in the same manner as in Preparation Example 1 except that the halogenated zinc phthalocyanine pigment used in Preparation Example 1 is changed to an azo-based nickel complex pigment (E4GN-GT manufactured by LANXESS). It was. When the average primary particle diameter of the obtained pigment was observed with TEM, the particle diameter was 20 nm.

(Preparation Example 3 of Finer Pigment: Production of Pigment (P-3))
The zinc halide phthalocyanine pigment used in Preparation Example 1 was replaced with copper phthalocyanine green pigment C.I. I. A refined pigment (P-3) was obtained in the same manner except that it was changed to CI Pigment Green 36 (Rionol Green 6YK manufactured by Toyo Ink Co., Ltd.). When the average primary particle diameter of the obtained pigment was observed with TEM, the particle diameter was 21 nm.
(Preparation Example 4 of Finer Pigment: Production of Pigment (P-4))
The zinc halide phthalocyanine pigment used in Preparation Example 1 was replaced with the isoindoline yellow pigment C.I. I. A refined pigment (P-4) was obtained in the same manner as in Preparation Example 1, except that it was changed to CI Pigment Yellow 139 (“Pariotor” Yellow D1819, manufactured by BSF Corporation). When the average primary particle diameter of the obtained pigment was observed with TEM, the particle diameter was 26 nm.

Example 1
Preparation of pigment dispersion composition (d-1) (A) 9.2 parts of pigment (P-1) obtained in Preparation Example 1 above, 3.5 parts of pigment (P-2), (B) quinophthalone Compound (7) 2.3 parts as a compound, Solsperse 24000GR (manufactured by Nippon Lubrizol Co., Ltd.) 9.0 parts, (C) Propylene glycol monomethyl ether acetate (hereinafter referred to as PGMEA) as a solvent. ) After mixing 76 parts, a pigment dispersion composition (d-1) was obtained by dispersing for 3 hours in a sand grinder mill.
When the viscosity of the obtained pigment dispersion composition was measured with an E-type viscometer, it was very stable at 9.2 mPa · s, and it was confirmed that good dispersion stability was obtained.
(Examples 2 to 18)
Preparation of pigment dispersion composition (d-2 to d-18) The pigment and quinophthalone compound used in the preparation of pigment dispersion composition (d-1) were changed to the pigments and quinophthalone compounds shown in Tables 1 and 2 below. Except for the above, pigment dispersion compositions (d-2 to d-25) were obtained in the same manner as in the preparation example of the pigment dispersion composition (d-1). The results of measuring the viscosity of each pigment dispersion composition in the same manner as in Example 1 are shown in Table 1.

(Examples 19 to 24)
Preparation of pigment dispersion composition (d-19 to d-24) In the preparation of pigment dispersion composition (d-1), the pigment and quinophthalone compound were changed to the pigments and quinophthalone compounds shown in Tables 1 and 2 below. The pigment dispersion composition was the same as the preparation example of the pigment dispersion composition (d-1) except that the addition amount of the dispersant Solsperse 24000GR was changed to 7.2 parts, and the addition amount of the solvent PGMEA was changed to 77.8 parts. The thing (d-19-d-24) was obtained. The results of measuring the viscosity of each pigment dispersion composition in the same manner as in Example 1 are shown in Table 1.
(Comparative Examples 1-4)
Preparation of pigment dispersion composition (d-25 to d-28) In preparation of pigment dispersion composition (d-1), the pigment and quinophthalone compound were changed to the pigments and quinophthalone compounds shown in Tables 1 and 2 below. Obtained pigment dispersion compositions (d-25 to d-28) in the same manner as in the preparation example of the pigment dispersion composition (d-1). The results of measuring the viscosity of each pigment dispersion composition in the same manner as in Example 1 are shown in Table 1.
(Comparative Examples 5-8)
Preparation of Pigment Dispersion Composition (d-29 to d-32) In preparation of Pigment Dispersion (d-1), the pigment and quinophthalone compound were changed to the pigments and quinophthalone compounds shown in Tables 1 and 2 below, and dispersed. Pigment dispersion composition (d-) in the same manner as in Preparation Example of Pigment Dispersion Composition (d-1) except that the addition amount of the agent Solsperse 24000GR was changed to 7.2 parts and (D) the solvent PGMEA was changed to 77.8 parts. 29-d-32) were obtained. The results of measuring the viscosity of each pigment dispersion composition in the same manner as in Example 1 are shown in Table 1.

(Comparative Example 9)
Preparation of Pigment Dispersion Composition (d-33) Pigment (P-4) in the preparation of Pigment Dispersion Composition (d-13) was mixed with an isoindoline-based yellow pigment C.I. I. Pigment Dispersion Composition (d-33) in the same manner as in Preparation Example of Pigment Dispersion Composition (d-1), except that Pigment Yellow 139 (average primary particle diameter 48 nm , described in Table 2 as PY139 ) was used. Got. When the viscosity of the obtained pigment dispersion composition was measured with an E-type viscometer, it was 31.2 mPa · s.

As apparent from Tables 1 and 2, the pigment dispersion composition of the present invention has an appropriate balance of the blending amount of (A) the pigment and (B) the quinophthalone compound having the specific substituent, Regardless, it can be seen that both have low viscosity and good dispersibility and dispersion stability. Further, as shown in Examples 17 and 18, it can be seen that (B) the quinophthalone compound has a good dispersion stability as long as it is a compound having a structure within the scope of the present invention. Comparative In contrast, including a pigment is outside the range of (A) a pigment and (B) quinophthalone compound content ratio out of range of the average primary particle diameter of Comparative Examples 1 to 8 and pigments present invention of the present invention It can be seen that all of the pigment dispersion compositions of Example 9 had high viscosity and poor dispersion stability.

(Example 25)
Preparation of colored photocurable composition (R-1)
A colored photocurable composition (R-1) was obtained by mixing the components described in the following composition.
-Composition-
Pigment dispersion composition (d-1) 10.74 parts Pigment dispersion composition (d-5) 3.65 parts Alkali-soluble resin (Allyl-MA / MAA = 80/20 Mw.30,000) 0. 25 parts Polymerizable compound Aronix M-510 (manufactured by Toagosei Co., Ltd.) 1.33 parts Polymerization initiator IRGACURE OXE01
(Manufactured by Ciba Specialty Chemicals Co., Ltd.) 0.37 parts Surfactant MegaFuck F-554 (manufactured by DIC) 0.01 parts propylene glycol monomethyl ether acetate (PGMEA) 8.65 parts ethyl 3-ethoxypropionate ( EEP) 5.00 parts

(Examples 26 to 47, Comparative Examples 10 to 17)
Preparation of colored photocurable composition (R-2 to R-32) The types of pigment dispersion used in the colored photocurable composition (R-1) are shown in Tables 3 to 6 below. A colored photocurable composition (R-2 to R-32) was obtained in the same manner as in Example 25 except for the change. In Tables 3 to 6 below, the pigment dispersion compositions to be blended were referred to as “dispersion 1” and “dispersion 2”, and the codes of the pigment dispersion compositions used were indicated.

The colored photocurable compositions obtained in Examples 25 to 56 were evaluated according to the following criteria. The results are shown in Tables 3 to 6.
(Evaluation of contrast and brightness)
The colored photosensitive composition (color resist solution) is applied onto a 100 mm × 100 mm glass substrate (EAGLE2000, manufactured by Corning) so that the coating thickness after drying is 2.0 μm, and is heated in an oven at 90 ° C. Dry for 100 seconds (pre-bake).
Then, the mask exposure was performed at 60 mJ / cm ² (illuminance 20 mW / cm ² ), and the coated film after the exposure was a 1% aqueous solution (25 ° C.) of an alkali developer CDK-1 (manufactured by FUJIFILM Electronics Materials). Was sprayed in the form of a shower for 60 seconds. Thereafter, pure water is sprayed in the form of a shower to wash away the developer, and the substrate is heated in an oven at 230 ° C. for 30 minutes (post-bake) to form a colored layer formed of the colored photosensitive composition on the glass substrate surface. A measurement substrate was prepared.
(Lightness: Y value)
The chromaticity of the obtained substrate was measured with MCPD-2000 (manufactured by Otsuka Electronics Co., Ltd.), and the brightness was judged from the Y value. The larger the value, the higher the brightness and the better.
(contrast)
The obtained substrate is sandwiched between two polarizing plates, and the luminance when the deflection axes of the two deflecting plates are parallel and the luminance when orthogonal are measured using a BM-5A manufactured by Topcon Corporation. A value obtained by dividing the luminance at the time by the luminance at the time of orthogonality (= the luminance at the time of parallel / the luminance at the time of orthogonality) was used as an index for evaluating the contrast.

  As is apparent from Tables 3 to 6, Examples 25 to 47 of the colored photosensitive composition containing the pigment dispersion composition according to the present invention are all colored hardened layers (color filter coloring) having good brightness and contrast. Corresponding to the pattern). On the other hand, it turns out that the colored cured film by the colored photosensitive composition (Comparative Examples 10-17) using the pigment dispersion composition of Comparative Examples 1-8 is inferior in both brightness and contrast.

(Examples 48 to 59)
Preparation of colored photocurable composition (R-32 to R-43)
In the same manner as in Example 36 (R14), except that the components other than the pigment dispersion composition, the polymerizable compound and the solvent were changed as shown in Table 7 below, the colored photocurable composition was used. A composition (R-32 to R-43) was obtained. The results of evaluating this colored curable composition in the same manner as in Example 25 are also shown in Table 7 below.

In addition, the detail of each component of Table 7 is as showing below.
Polymerizable compound: Aronix M-510
Alkali-soluble resin: (Allyl-MA / MAA = 80/20 Mw.30,000)
Initiator 1: IRGACURE OXE01 (Ciba Specialty Chemicals)
Initiator 2: IRGACURE OXE02 (Ciba Specialty Chemicals)
Initiator 3: Oxime compound (1) (obtained in Synthesis Example 7)
Initiator 4: B-CIM, manufactured by Hodogaya Chemical Co., Ltd. Initiator 5: Compound (10) having the following structure
Initiator 6: N-phenyl mercaptobenzimidazole Additive 1: Azoxyanisole
Additive 2: ADK STAB AO-60
Additive 3: ADK STAB LA-52
Additive 4: EHPE-3150
Surfactant: MegaFuck F-554

Compound (10)

  As shown in Table 7, the colored photosensitive composition (R-32 to R-43) of the present invention forms a colored cured film with good lightness and contrast even in systems with different polymerization initiators and additives. From this, it can be seen that it is useful for forming a colored pattern of a color filter.

(Comparative Example 18)
Preparation of colored photocurable composition (R-44)
The pigment dispersion composition used in Comparative Example 9 was the pigment dispersion composition (d-13) shown in Example 29 described in Table 3 above as the type of pigment dispersion used in the colored photocurable composition (R-1). A colored photocurable composition (R-44) was obtained in the same manner as in Example 29 except that the product (d-33) was changed. As a result of evaluating this colored curable composition (R-44) in the same manner as in Example 25, the chromaticity (x, y, Y) and contrast of the substrate were as follows.
x: 0.280, y: 0.599, Y: 56.0, contrast 11200
In comparison between Example 48 to Example 59 and Comparative Example 18, it can be seen that the colored cured film of Comparative Example 18 in which the average primary particle diameter of the pigment used is outside the range of the present invention is inferior in contrast.

(Example 60)
[Production of color filters]
1. Formation of colored curable composition layer Using the colored curable composition (R-3) containing the pigment obtained as described above as a resist solution, slit coating was performed on a glass substrate provided with a black matrix of 550 mm × 650 mm under the following conditions. Thereafter, vacuum drying (66 Pa) and prebake (90 ° C., 100 seconds) were applied to form a colored curable composition coating film (colored curable composition layer).

(Slit application conditions)
Opening gap at the tip of the coating head: 100 μm
Coating speed: 150 mm / second Clearance between substrate and coating head: 150 μm
Application thickness (dry thickness): 2 μm
Application temperature: 23 ° C

2. Exposure and development Subsequently, the colored curable composition layer was exposed in a pattern at 60 mJ / cm ² using a proximity exposure machine (manufactured by Hitachi High-Technology Corporation, LE5565A). The entire surface of the colored curable composition layer after the exposure was washed with a 1.0% aqueous solution (25 ° C.) of an inorganic developer (trade name: CDK-1, manufactured by Fuji Film Electronics Materials Co., Ltd.) at a shower pressure of 0. The pressure was set at 2 MPa, developed for 60 seconds, and washed with pure water.

3. Heat treatment Pure water was sprayed onto the colored curable composition layer as a shower to wash away the developer, and then heated in an oven at 230 ° C. for 30 minutes (post-baking). In this way, a green coloring pattern was formed on the substrate.

4). Formation of red and blue coloring patterns Thereafter, a coloring pattern is formed with a blue coloring curable composition (CB-9500L; manufactured by Fuji Film Electronics Materials Co., Ltd.), and further a red coloring curable composition (CR- 9500L; FUJIFILM Electronics Materials Co., Ltd.), a colored pattern is formed, ITO is deposited, and a photopolymerizable composition (CSP-3210L; FUJIFILM Electronics Materials Co., Ltd.) is used to form a spacer. A color filter (1) having green, red, and blue coloring patterns (pixels) on the substrate was obtained.

(Comparative Example 19)
A colored pattern was similarly formed except that the colored curable composition (R-3) used as a resist in Example 60 was changed to the colored curable composition (R-11) used in Comparative Example 10, A color filter (2) was obtained.

5. Performance evaluation (color unevenness evaluation)
On the 550 mm × 650 mm substrate, the chromaticity of the green pixel portion at the 12 points shown in FIG. Value)] = y _range as an index of color unevenness evaluation. The coordinate positions are as shown in Table 8 below.

Here, when the color unevenness of the color filter (1) obtained in Example 60 was evaluated, y _range = 0.002, and it was confirmed that the color filter had uniform color characteristics. Subsequently, when the color unevenness of the color filter (2) of Comparative Example 19 was evaluated, y _range = 0.010, and it was found that the film was uneven with color unevenness.

(contrast)
The obtained color filter (1) and color filter (2) are sandwiched between two polarizing plates, respectively, and the brightness when the deflection axes of the two deflecting plates are parallel and the brightness when orthogonal are obtained is Topcon Corporation The value obtained by dividing the parallel brightness by the orthogonal brightness (= the parallel brightness / the orthogonal brightness) was used as an index for evaluating the contrast. . When the color filter (1) obtained in Example 60 and the color filter (2) obtained in Comparative Example 19 were evaluated by the above methods, the contrast was 4500 and 3600, respectively. From this, it was confirmed that the color filter (1) of the present invention is excellent in contrast.

<Liquid crystal display element>
When the color filter (1) obtained in Example 60 was incorporated into a liquid crystal display element, it was confirmed that the liquid crystal display element was excellent in color characteristics and contrast.

Claims (11)

(A ) A pigment dispersion composition containing a pigment , ( B ) a quinophthalone compound, and (C) a solvent , wherein the (A) pigment is at least one selected from pigments having an average primary particle size of 10 nm to 30 nm. , and the quinophthalone the (B) quinophthalone compound, a hydroxyl group, a carboxylic acid group, a sulfonic acid group, having at least one amino group and a group selected from their salts, where you express the following general formula (1) is a compound, and the (a) pigment, the (B) content ratio of quinophthalone compound [(a) :( B)] is, by weight (a) :( B) = 85 : 15~10: 90 A pigment dispersion composition in the range of

(In the general formula (1), X ^{1 to} X ⁸ each independently represent a hydrogen atom, a chlorine atom, or a bromine atom. R ^{1 to} R ⁴ each independently represent a hydrogen atom, —OC _n H _2n —Y, _{-SO 3 C n H 2n -Y,} -SO 2 NHC n H 2n -Y, -CO 2 C n H 2n -Y, -NHCOC n H 2n -Y, _{or, -N (C n H 2n -Y} ) ₂ represents not all hydrogen atoms, n represents an integer of 0 to 20, Y represents a hydrogen atom, —OH, —SO ₃ H, —CO ₂ H, —CO ₂ ^— [NH ₄ ]. ^+, _-SO ³ - represents the _[NH ^{4] +,} or, -N ^(R ₅₎ .R represents ₂ ⁵ a hydrogen atom or an alkyl group having 1 to 20 carbon atoms).   The content ratio [(A) :( B)] of the (A) pigment and the (B) quinophthalone compound is in the range of (A) :( B) = 82: 18 to 15:85 on a mass basis. The pigment dispersion composition according to claim 1.   The content ratio [(A) :( B)] of the (A) pigment and the (B) quinophthalone compound is in the range of (A) :( B) = 80: 20 to 20:80 on a mass basis. The pigment dispersion composition according to claim 1.   The (A) pigment is at least one selected from the group consisting of quinophthalone pigments, isoindoline pigments, azo metal complexes, metal phthalocyanine green pigments, diketopyrrolopyrrole pigments, and anthraquinone pigments. The pigment dispersion composition according to any one of claims 1 to 3.   The said (A) pigment is at least 1 sort (s) selected from the group which consists of a copper phthalocyanine pigment, a zinc phthalocyanine pigment, an azo-type nickel complex pigment, and an isoindoline-type pigment. The pigment dispersion composition according to item.   The pigment dispersion composition according to any one of claims 1 to 5, wherein the pigment (A) is a pigment kneaded in the presence of an inorganic salt and a solvent. A colored photosensitive composition comprising (D) a polymerizable compound, (E) a photopolymerization initiator, and the pigment dispersion composition according to any one of claims 1 to 6 . A photosensitive film forming step of forming the photosensitive film by applying the colored photosensitive composition according to claim 7 directly or via another layer to the photosensitive film, pattern exposure on the formed photosensitive film, and A color pattern forming step of forming a color pattern by sequentially performing development. A color filter provided with the colored pattern obtained by using the colored photosensitive composition according to claim 7 , or obtained by the method for producing a color filter according to claim 8 . A display device comprising the color filter according to claim 9 . A solid-state imaging device comprising the color filter according to claim 9 .