JP2013195942A - Dispersion apparatus for colored composition for color filter, production method of colored composition for color filter, colored composition for color filter, and color filter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a production apparatus and a production method for a colored composition for a color filter, in which re-aggregation of a pigment is prevented by continuously subjecting the pigment to an ultrasonic dispersion treatment while dispersing the pigment by use of a minute media to a submicron range of 1 μm or smaller, and thereby, a stable dispersion is produced and both of a high contrast ratio and viscosity stability required for a color filter can be achieved, and to provide a colored composition for a color filter produced by the above production apparatus.SOLUTION: A dispersion apparatus for a colored composition of a color filter includes dispersing means (a) using ultrasonic vibration energy and dispersing means (b) using collision of a media to which energy is imparted by rotating rotary blades. The dispersing means (a) and the dispersing means (b) are connected in a serial circulation circuit.

Description

  The present invention relates to a dispersion device and a production method of a colored composition for a color filter used in the production of a color filter used for a color liquid crystal display device, a color image pickup tube element, and the like, and a colored composition for a color filter, and the same The present invention relates to a color filter to be obtained.

  The color liquid crystal display device controls the amount of light passing through the second polarizing plate by controlling the degree of polarization of the light that has passed through the first polarizing plate by the liquid crystal layer sandwiched between the two polarizing plates. This is a display device that performs display by using a twisted nematic (TN) type liquid crystal. The liquid crystal display device can perform color display by providing a color filter between two polarizing plates. Therefore, liquid crystal display devices are being developed for use in televisions and personal computer monitors.

  On the color filter used in the color liquid crystal display device, a transparent electrode for driving the liquid crystal is generally formed by vapor deposition or sputtering, and an alignment film for aligning the liquid crystal in a certain direction is formed thereon. Has been. In order to sufficiently obtain the performance of these transparent electrodes and alignment films, it is necessary to perform the formation process at a high temperature of generally 200 ° C. or higher, preferably 230 ° C. or higher.

  A quality item required for the color filter is a contrast ratio. When a color filter with a low contrast ratio is used, the degree of polarization controlled by the liquid crystal is disturbed, and when light must be blocked (OFF state), light must leak or be transmitted (ON) In other words, the transmitted light is attenuated in the state), resulting in a blurred screen. Therefore, in order to realize a high-quality liquid crystal display device, high contrast is indispensable.

  The color filter production method includes a dyeing method using a dye or a salt-forming dye as a colorant, a dye dispersion method, a pigment dispersion method using a pigment as a colorant, a printing method, and an electrodeposition method. Among these, the dyeing method or the dyeing and dispersing method has a drawback that the heat resistance and light resistance are slightly inferior because the colorant is a dye. Therefore, a pigment having excellent heat resistance and light resistance is used as a colorant for the color filter, and a pigment dispersion method is often used as a manufacturing method because of the accuracy and stability of the forming method.

In general, it is difficult to obtain a stable coloring composition by dispersing fine pigment particles in a colorant carrier such as varnish in the pigment dispersion method, and the pigment particles therein often aggregate over time. A color filter formed using a coloring composition in which pigment particles are aggregated significantly reduces the contrast ratio. Therefore, the pigment may be stable fine particles without agglomeration in the pigment, and may be easily handled. It is desired.
Furthermore, in recent years, required properties such as contrast ratio and flow stability required for a color filter coloring composition have become very high performance, and a technique for finely dispersing pigments is important.

  The fine dispersion of pigment is generally achieved by impact, shearing, and frictional forces obtained by vigorously stirring the media with a stirring mechanism in a media-type disperser called attritor, sand mill, sand grinder, dyno mill, pearl mill, etc. This is done by treating the composition.

In addition, it is proposed that the use of fine media of 0.3 mmφ or less in the media type disperser provides sufficient colorization to obtain a pigment dispersion for a color filter having a very high contrast ratio and good fluidity. (For example, refer to Patent Document 1).
However, when dispersion processing is performed with such a minute medium, a high contrast ratio is achieved and many fine particles of 1 μm or less appear. Therefore, although the specific surface area of the particle is dramatically increased, the resin coating on the surface of the particle cannot catch up, and the formation of aggregates due to the interparticle force is promoted, resulting in poor viscosity stability of the colored composition. there were.

  So far, several methods by ultrasonic treatment have been proposed to improve the viscosity stability of the pigment dispersion (see Patent Documents 2 to 3). However, ultrasonic treatment alone or after preparation of the pigment dispersion has been proposed. There is a problem that it is difficult to achieve both viscosity stability and high contrast.

JP 2005-221804 A JP 2007-155782 A JP 2009-067831 A

  The object of the present invention is to prevent re-aggregation of the pigment by continuously performing ultrasonic dispersion treatment while dispersing to a submicron region of 1 μm or less with a micro medium, thereby producing a stable dispersion. Manufacturing method and manufacturing method of coloring composition for color filter that can achieve both high contrast ratio and viscosity stability required for color filter, and coloring composition for color filter manufactured by the manufacturing apparatus Is to provide.

  The inventors focused on combining micro-media dispersion and ultrasonic dispersion treatment, and produced a mill-based pigment dispersion that prevented re-aggregation of the pigment by performing uniform and continuous dispersion treatment of the pigment, thereby achieving high contrast. The inventors have found that a colored composition having a high ratio and viscosity stability can be obtained, and the present invention has been completed.

That is, the present invention includes a dispersion means (a) using ultrasonic vibration energy,
Dispersive means (b) by collision of media energized by rotating rotor blades;
And the dispersing means (a) and the dispersing means (b) are connected by a series circulation circuit.

  The present invention also relates to the above color composition for color filter dispersing apparatus, wherein the means for dispersing by ultrasonic vibration energy is means for the ultrasonic oscillator to directly give energy to the pigment composition.

  The present invention also relates to the above-described coloring composition dispersing apparatus for a color filter, wherein the frequency of ultrasonic vibration energy is 5 to 200 kHz.

  The present invention also relates to the above-described method for producing a coloring composition for a color filter, wherein the particle size of the media in the dispersing means (b) is 0.01 to 0.5 mmφ.

  In addition, the present invention relates to the above color composition coloring composition dispersing apparatus, wherein both the dispersing means (a) and the dispersing means (b) are provided with a cooling device corresponding to heat generation.

  Moreover, this invention relates to the manufacturing method of the coloring composition for color filters characterized by disperse | distributing the coloring composition for color filters using the said dispersing device.

  Moreover, this invention relates to the coloring composition for color filters manufactured by the said manufacturing method.

  The present invention further relates to the coloring composition for a color filter, further comprising a photopolymerization initiator.

  The present invention also relates to a color filter comprising a filter segment formed on the substrate using the color filter coloring composition.

  By using the production apparatus of the present invention, a fine pigment that has been easily re-aggregated until now can be stably dispersed in fine media, and a colored composition for a color filter having a low viscosity and a stable viscosity over time can be obtained. . Moreover, a color filter with a high contrast ratio can be obtained by using the coloring composition for a color filter.

FIG. 1 shows an example of a dispersion apparatus used in the present invention. FIG. 2 shows an example of a dispersion apparatus used in the present invention. FIG. 3 shows an example of a dispersion apparatus used in the present invention. FIG. 4 shows an example of a dispersion apparatus used in the present invention.

Hereinafter, the present invention will be described in detail.
<Production device for coloring composition for color filter>
The present invention is an apparatus for producing a coloring composition for a color filter comprising a pigment, a resin, and a solvent, comprising a dispersion means (a) using ultrasonic vibration energy and a medium provided with energy from a rotating rotor blade. Dispersion means (b) by collision is provided, and the dispersion means (a) and the dispersion means (b) are connected by a series circuit.

<Dispersion means (a) by ultrasonic vibration energy>
The pigment dispersion is well dispersed immediately after production, but agglomeration or the like occurs when the storage state due to sale, storage, etc. is prolonged, resulting in poor dispersibility. When a colored composition and a color filter are produced using such a pigment dispersion having poor dispersibility, the color filter has poor characteristics due to this.

The dispersing means (a) of the present invention is characterized by ultrasonically treating the pigment dispersion with ultrasonic vibration energy.
As a method for ultrasonic treatment of the pigment dispersion, an embodiment in which the ultrasonic oscillator and the pigment dispersion are in direct contact is preferable. For example, an embodiment in which an ultrasonic generator including an ultrasonic oscillator is provided in the middle of the inflow path is preferable. It is more preferable to circulate through the inflow passage where the pigment dispersion is closed and repeat ultrasonic treatment as many times as necessary.

The frequency of the ultrasonic vibration energy of the pigment dispersion is preferably 5 to 200 kHz, and more preferably 5 to 20 kHz.
When the frequency exceeds 20 kHz, high heat generated from fine vibrations affects the pigment dispersion (pigment paste) itself and the state of the color resist completed by introducing a coloring composition containing the pigment paste. May give.

  In order to avoid this problem, as a more preferable embodiment of the present invention, a configuration in which a certain amount of the pigment dispersion passes through the ultrasonic generator at a constant speed is provided. In addition, a cooling device such as a water cooling tube can be attached to the ultrasonic treatment device (for example, cup shape), and heat generation during the ultrasonic treatment can be reduced.

<Distribution means by media collision (b)>
The dispersing means (b) is a step of dispersing by collision of media given energy from a rotating rotor blade.

  Examples of the disperser that can be used in the dispersing means (b) of the present invention include a horizontal disperser of a cylindrical disperser, a media disperser such as an annular type (annular type), such as a ball mill. Various dispersers using media such as sand mill, attritor and vibration mill can be used.

  The rotary shaft of this media type disperser is provided with rotor blades having various shapes, and disk type, pin type, etc. are known. Among them, those equipped with rotor pins are effective for the present invention. Preferred to make it even more pronounced. When the rotating shaft rotates, the rotating blades of the rotating shaft impart energy to the medium, and the medium is dispersed by colliding with the coloring composition.

  In addition, as a media separation mechanism of this media type dispersing machine, there are a centrifugal separation method, a slit method (gap separator method), a screen method, and the like, but a centrifugal separation method is preferable. The production of slits or screens that can separate minute media with a particle size of 0.3 mmφ or less is very difficult due to machining accuracy, and there is a possibility of clogging when supplying a mill base pigment dispersion. is there.

  Examples of wet dispersers equipped with a rotor pin and a media separation mechanism by centrifugation include, for example, a super apex mill (manufactured by Kotobuki Industries), an ultra apex mill (manufactured by Kotobuki Industries), a dual apex mill (manufactured by Kotobuki Industries), and a DCP type. There are a pearl mill (manufactured by Eirich), a picogren mill (manufactured by Asada Iron Works), and an eco mill (manufactured by Asada Iron Works).

  The media filling rate in the disperser with good dispersion efficiency is preferably 50 to 100% by weight, more preferably 60 to 80% by weight.

  The material of the media is not particularly limited, and commonly used glass, steel, stainless steel, ceramics, zircon, zirconia and the like can be mentioned. Many take the form of beads. The media particle size must be 0.3 mmφ or less, preferably 0.01 to 0.5 mmφ, particularly 0.1 mmφ or less in order to achieve fine media dispersion, sizing effect, and high contrast ratio. In particular, it is preferable to use a micro media of 0.05 mmφ to 0.01 mmφ because the effect becomes very large.

<Series circulation circuit>
The dispersing means (a) and the dispersing means (b) are installed so as to form a series circulation circuit, and the coloring composition can be continuously dispersed to circulate between the respective means. .
Specific examples of circulating circuit installation are shown in FIGS.

<Coloring composition for color filter>
Next, the raw material which comprises the coloring composition for color filters is demonstrated.
The coloring composition for a color filter includes a pigment, a resin, and, if necessary, a dispersion aid, a solvent, a photopolymerizable monomer, a photopolymerization initiator, and the like.
(Pigment)
As the pigment, organic or inorganic pigments can be used alone or in admixture of two or more. The pigment is preferably a pigment having high color developability and high heat resistance, particularly a pigment having high heat decomposition resistance, and usually an organic pigment is used.

  Examples of organic pigments include diketopyrrolopyrrole pigments, azo pigments such as azo, disazo, and polyazo, phthalocyanine pigments such as copper phthalocyanine, halogenated copper phthalocyanine, and metal-free phthalocyanine, aminoanthraquinone, diaminodianthraquinone, anthrapyrimidine, Anthraquinone pigments such as flavantron, anthanthrone, indanthrone, pyranthrone, violanthrone, quinacridone pigment, dioxazine pigment, perinone pigment, perylene pigment, thioindigo pigment, isoindoline pigment, isoindolinone pigment, quinophthalone Pigments, selenium pigments, metal complex pigments and the like.

  Among these, the red pigment is a diketopyrrolopyrrole-based, quinacridone-based, the blue pigment is a copper phthalocyanine-based, the green pigment is a halogenated phthalocyanine-based, and the yellow pigment is a quinophthalone-based organic pigment. It is preferable because a color filter having a high resin adsorption amount for the pigment and capable of achieving both viscosity stability and a high contrast ratio can be obtained.

  Below, the specific example of the organic pigment which can be used for the coloring composition for color filters of this invention is shown with a color index number.

  When forming a red filter segment using the coloring composition of the present invention, for example, C.I. I. Pigment Red 7, 9, 14, 41, 48: 1, 48: 2, 48: 3, 48: 4, 81: 1, 81: 2, 81: 3, 97, 122, 123, 146, 149, 166, 168, 176, 177, 178, 179, 180, 184, 185, 187, 192, 200, 202, 208, 210, 215, 216, 217, 220, 221, 223, 224, 226, 227, 228, 240, Red pigments such as 242, 246, 254, 255, 264, and 272 can be used.

  The red coloring composition includes C.I. I. Pigment Orange 36, 38, 43, 71, or 73, and / or C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 12, 13, 14, 15, 16, 17, 18, 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, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 126, 127, 128, 129, 138, 139, 147, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181 182,185,187,188,193,194,198,199,213,214,218,219,220, or may be used in combination of a yellow pigment 221, and the like.

When forming a green filter segment using the coloring composition of the present invention, for example, C.I. I. Green pigments such as CI Pigment Green 7, 10, 36, 37, 58 can be used.
The green coloring composition includes C.I. I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 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, 174, 175, 1 It can be used in combination with the yellow pigments such as 6,177,179,180,181,182,185,187,188,193,194,199,213,214.

When forming a blue filter segment using the coloring composition of the present invention, for example, C.I. I. Blue pigments such as CI Pigment Blue 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 22, 60, and 64 can be used.
The blue coloring composition includes C.I. I. Purple violet pigments such as CI Pigment Violet 1, 19, 23, 27, 29, 30, 32, 37, 40, 42, and 50 can be used in combination.

Inorganic pigments include titanium oxide, barium sulfate, zinc white, lead sulfate, yellow lead, zinc yellow, red bean (red iron (III) oxide), cadmium red, ultramarine, bitumen, chromium oxide green, cobalt green, amber And synthetic iron black. Inorganic pigments are used in combination with organic pigments in order to ensure good coatability, sensitivity, developability and the like while maintaining a balance between saturation and lightness.
The colorant used in the present invention contains the pigment, but in addition, for color matching, a dye may be contained within a range in which the heat resistance is not lowered.

(resin)
The resin disperses the colorant in the colorant carrier, and examples thereof include a thermoplastic resin and a thermosetting resin. The resin preferably has a spectral transmittance of 80% or more, more preferably 95% or more in the entire wavelength region of 400 to 700 nm in the visible light region. Moreover, when using with the form of an alkali image development type coloring composition, it is preferable to use the alkali-soluble vinyl-type resin which copolymerized the acidic group containing ethylenically unsaturated monomer. In order to further improve the photosensitivity, an energy ray curable resin having an ethylenically unsaturated active double bond can also be used.

  In order to disperse or dissolve the colorant preferably, the weight average molecular weight (Mw) of the resin is preferably in the range of 10,000 to 100,000, more preferably in the range of 10,000 to 80,000. The number average molecular weight (Mn) is preferably in the range of 5,000 to 50,000, and the value of Mw / Mn is preferably 10 or less.

  When the resin is used for a color filter coloring composition, from the viewpoint of dispersibility, stability, developability, and heat resistance of the photosensitive coloring composition, as a colorant adsorbing group and an alkali-soluble group during development. The balance of working carboxyl groups, aliphatic groups and aromatic groups acting as affinity groups for the colorant carrier and solvent is important for the dispersibility, penetrability, developability and even durability of the pigments and salt-forming compounds, It is preferable to use a resin having an acid value of 20 to 300 mgKOH / g. When the acid value is less than 20 mgKOH / g, the solubility in the developing solution is poor and it is difficult to form a fine pattern. If it exceeds 300 mgKOH / g, no fine pattern remains.

  The resin is preferably used in an amount of 20 to 700 parts by weight with respect to 100 parts by weight of the pigment. If it is less than 20 parts by weight, the film formability and various resistances are insufficient, and if it is more than 700 parts by weight, the concentration of the colorant becomes low and color characteristics cannot be expressed.

(Dispersing aid)
When dispersing the colorant in the colorant carrier, a dispersion aid such as a pigment derivative, a resin-type dispersant, or a surfactant can be appropriately used. The dispersion aid is excellent in dispersion of the colorant and has a large effect of preventing reaggregation of the colorant after dispersion. Therefore, a dispersion composition is used to disperse the colorant in the colorant carrier using the dispersion aid. When used, a color filter with high contrast can be obtained.

[Pigment derivatives]
The pigment derivatives are compounds represented by the following general formula (1), and there are those having a basic substituent and those having an acidic substituent.
General formula (1)
AB
A: Organic pigment residue B: Basic substituent or acidic substituent

  In the general formula (1), the organic pigment constituting the organic pigment residue of A includes diketopyrrolopyrrole pigments, azo pigments such as azo, disazo and polyazo, copper phthalocyanine, halogenated copper phthalocyanine, and metal-free phthalocyanine. Phthalocyanine pigments such as aminoanthraquinone, diaminodianthraquinone, anthrapyrimidine, flavantron, anthanthrone, indantron, pyranthrone, violanthrone, anthraquinone pigment, quinacridone pigment, dioxazine pigment, perinone pigment, perylene pigment, Examples thereof include thioindigo pigments, isoindoline pigments, isoindolinone pigments, quinophthalone pigments, selenium pigments, and metal complex pigments.

  In the general formula (1), examples of the basic substituent of B include substituents represented by the following general formula (2), general formula (3), general formula (4), and general formula (5). As an acidic substituent, the substituent shown by General formula (6) and General formula (7) is mentioned.

X: represents —SO ₂ —, —CO—, —CH ₂ NHCOCH ₂ —, —CH ₂ — or a direct bond.
n represents an integer of 1 to 10.
R ₁ and R ₂ : each independently an optionally substituted alkyl group having 1 to 36 carbon atoms, an optionally substituted alkenyl group having 2 to 36 carbon atoms, an optionally substituted phenyl group, or R ₁ and R ₂ together represent an optionally substituted heterocycle containing an additional nitrogen, oxygen or sulfur atom.
R ₃ represents an optionally substituted alkyl group having 1 to 36 carbon atoms, an optionally substituted alkenyl group having 2 to 36 carbon atoms, or an optionally substituted phenyl group.
R ₄ , R ₅ , R ₆ , R ₇ : each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 36 carbon atoms, an optionally substituted alkenyl group having 2 to 36 carbon atoms, or a substituent Represents an optionally substituted phenyl group.
Y: represents —NR ₈ —Z—NR ₉ — or a direct bond.
R ₈ and R ₉ are each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 36 carbon atoms, an optionally substituted alkenyl group having 2 to 36 carbon atoms, or an optionally substituted phenyl group. Represents.
Z: represents an optionally substituted alkylene group having 1 to 36 carbon atoms, an optionally substituted alkenylene group having 2 to 36 carbon atoms, or an optionally substituted phenylene group.

R: represents a substituent represented by the general formula (8) or a substituent represented by the general formula (9).
Q: A hydroxyl group, an alkoxyl group, a substituent represented by the general formula (8) or a substituent represented by the general formula (9).

M: represents a hydrogen atom, calcium atom, barium atom, strontium atom, manganese atom or aluminum atom.
i: represents the valence of M.
R ₁₀ , R ₁₁ , R ₁₂ , R ₁₃ : each independently a hydrogen atom, an optionally substituted alkyl group having 1 to 36 carbon atoms, an optionally substituted alkenyl group having 2 to 36 carbon atoms, substitution Represents an optionally substituted phenyl group or polyoxyalkylene group.

  Examples of the amine component used to form the substituent represented by the general formula (2) to the general formula (5), the general formula (8), and the general formula (9) include dimethylamine, diethylamine, N, N-ethylisopropylamine, N, N-ethylpropylamine, N, N-methylbutylamine, N, N-methylisobutylamine, N, N-butylethylamine, N, N-tert-butylethylamine, diisopropylamine, dipropyl Amine, N, N-sec-butylpropylamine, dibutylamine, disec-butylamine, diisobutylamine, N, N-isobutyl-sec-butylamine, diamylamine, diisoamylamine, dihexylamine, di (2-ethylhexyl) Amine, dioctylamine, N, N-methyloctadecylami , Didecylamine, diallylamine, N, N-ethyl-1,2-dimethylpropylamine, N, N-methylhexylamine, dioleylamine, distearylamine, N, N-dimethylaminomethylamine, N, N-dimethylaminoethylamine N, N-dimethylaminoamylamine, N, N-dimethylaminobutylamine, N, N-diethylaminoethylamine, N, N-diethylaminopropylamine, N, N-diethylaminohexylamine, N, N-diethylaminobutylamine, N, N-diethylaminopentylamine, N, N-dipropylaminobutylamine, N, N-dibutylaminopropylamine, N, N-dibutylaminoethylamine, N, N-dibutylaminobutylamine, N, N-diisobutylaminopentyla N, N-methyl-laurylaminopropylamine, N, N-ethylhexylaminoethylamine, N, N-distearylaminoethylamine, N, N-dioleylaminoethylamine, N, N-distearylaminobutylamine, Piperidine, 2-Pipecoline, 3-Pipecoline, 4-Pipecoline, 2,4-Lupetidine, 2,6-Lupetidine, 3,5-Lupetidine, 3-Piperidinmethanol, Pipecolic acid, Isonipecotic acid, Methyl isonicopetic acid, Ethyl isonicopetinate 2-piperidineethanol, pyrrolidine, 3-hydroxypyrrolidine, N-aminoethylpiperidine, N-aminoethyl-4-pipecoline, N-aminoethylmorpholine, N-aminopropylpiperidine, N-aminopropyl-2-pipecoline, N -Ami Nopropyl-4-pipecoline, N-aminopropylmorpholine, N-methylpiperazine, N-butylpiperazine, N-methylhomopiperazine, 1-cyclopentylpiperazine, 1-amino-4-methylpiperazine, 1-cyclopentylpiperazine, etc. .

  The amine component used to form the sulfonic acid amine salt of formula (7) may be any of primary, secondary, tertiary and quaternary amines. For example, primary amines have side chains. Hexylamine, heptylamine, octylamine, nonylamine, decylamine, undecylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine, heptadecylamine, octadecylamine, nonadecylamine, Examples include amines such as eocosylamine, or unsaturated amines corresponding to the number of carbon atoms.

Secondary, tertiary and quaternary amines include dioleylamine, distearylamine, dimethyloctylamine, dimethyldecylamine, dimethyllaurylamine, dimethylstearylamine, dilaurylmonomethylamine, trioctylamine, dimethyldidodecylammonium chloride, Dimethyl dioleyl ammonium chloride, dimethyl didecyl ammonium chloride, dimethyl dioctyl ammonium chloride, trimethyl stearyl ammonium chloride, dimethyl distearyl ammonium chloride, trimethyl decyl ammonium chloride, trimethyl hexadecyl ammonium chloride, trimethyl octadecyl ammonium chloride, dimethyl dodecyl tetradecyl ammonium chloride , Dimethyl hexadecyl octadec Ammonium chloride, and the like.
Further, when any of R ₁₀ , R ₁₁ , R ₁₂ and R ₁₃ in the formula (7) represents a polyoxyalkylene group, examples thereof include a polyoxyethylene group and a polyoxypropylene group.

Specific examples of pigment derivatives are shown below with compound numbers.

  The blending amount of the pigment derivative in the coloring composition is preferably 1 to 20 parts by weight, more preferably 5 to 15 parts by weight with respect to 100 parts by weight of the pigment. When the blending amount of the pigment derivative is less than 1 part by weight, the dispersion effect is insufficient, and when it is more than 20 parts by weight, the excess pigment derivative may affect the dispersion.

[Resin dispersant]
The resin-type dispersant has a colorant-affinity part having the property of adsorbing to the colorant and a part compatible with the colorant carrier, and adsorbs to the colorant to disperse the colorant to the colorant carrier. It works to stabilize. Specific examples of resin-type dispersants include polycarboxylic acid esters such as polyurethane and polyacrylate, unsaturated polyamides, polycarboxylic acids, polycarboxylic acid (partial) amine salts, polycarboxylic acid ammonium salts, and polycarboxylic acid alkylamine salts. , Polysiloxane, long-chain polyaminoamide phosphate, hydroxyl group-containing polycarboxylic acid ester, modified products thereof, amides formed by reaction of poly (lower alkyleneimine) and polyester having a free carboxyl group, and salts thereof Oil-soluble dispersants such as, (meth) acrylic acid-styrene copolymer, (meth) acrylic acid- (meth) acrylic acid ester copolymer, styrene-maleic acid copolymer, polyvinyl alcohol, polyvinylpyrrolidone, etc. Resin, water-soluble polymer, polyester, modified poly Acrylate-based, ethylene oxide / propylene oxide addition compound, phosphate ester-based and the like are used, they can be used alone or in admixture of two or more, not necessarily limited thereto.

  As a site | part with high affinity to a dispersion medium of the resin type dispersing agent of this invention, the at least 1 sort (s) of polymer unit chosen from polyester, polyether, and poly (meth) acrylate is preferable.

  For example, as polyester, ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,3-butanediol, 1,5-pentanediol, neopentyl glycol, 1,6-hexanediol 1,4-bis (hydroxymethyl) cyclohesan, bisphenol A, hydrogenated bisphenol A, hydroxypivalylhydroxypivalate, trimethylolethane, trimethylolpropane, 2,2,4-trimethyl-1,3-pentanediol, One or more alcohols such as glycerin or hexanetriol, succinic acid, adipic acid, sebacic acid, azelaic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, maleic acid, fumaric acid, citraconic acid, itaconic acid ,Guru Conic acid, 1,2,5-hexanetricarboxylic acid, 1,4-cyclohexanehycarboxylic acid, 1,2,4-benzenetricarboxylic acid, 1,2,5-benzenetricarboxylic acid, 1,2,4-cyclohexa And polyester polyols obtained by cocondensation with one or more carboxylic acids such as tricarboxylic acid or 2,5,7-naphthalenetricarboxylic acid.

  For example, as the polyether, ethylene glycol, propylene glycol, 1,3-propanediol, 1,4-butanediol, 1,3-butanediol, 1,5-pentanediol, neopentyl glycol, 1,6-hexane Diol, 1,4-bis (hydroxymethyl) cyclohesan, bisphenol A, hydrogenated bisphenol A, hydroxypivalylhydroxypivalate, trimethylolethane, trimethylolpropane, 2,2,4-trimethyl-1,3-pentanediol , Alcohols such as glycerin or hexanetriol, ethylene oxide, propylene oxide, tetrahydrofuran, ethyl glycidyl ether, propyl glycidyl ether, butyl glycidyl ether, phenyl glycidyl ether Others include modified polyether polyols and the like obtained by ring-opening polymerization of various (cyclic) ether bond-containing compounds such as allyl glycidyl ether.

  For example, as poly (meth) acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, t-butyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, cyclohexyl (meth) acrylate, stearyl (meth) acrylate, lauryl (meth) acrylate, tetrahydrofurfuryl (meth) acrylate, isobornyl (meth) acrylate, phenyl (Meth) acrylate, benzyl (meth) acrylate, phenoxyethyl (meth) acrylate, phenoxydiethylene glycol (meth) acrylate, oxetane (meth) acrylate, etc. Alkoxypolyalkylene glycol (meth) acrylates such as xypolypropylene glycol (meth) acrylate and ethoxypolyethylene glycol (meth) acrylate, (meth) acrylamide, and N, N-dimethyl (meth) acrylamide, N, N-diethyl (meta) ) N-substituted (meth) acrylamides such as acrylamide, N-isopropyl (meth) acrylamide, diacetone (meth) acrylamide, acryloylmorpholine, N, N-dimethylaminoethyl (meth) acrylate, N, N-diethylaminoethyl ( Examples include homopolymers and copolymers such as amino group-containing (meth) acrylates such as (meth) acrylate and nitriles such as (meth) acrylonitrile. These may be used alone or in combination, or may be in the form of a block polymer, graft polymer or random polymer.

  Commercially available resin-type dispersants include Disperbyk-101, 103, 107, 108, 110, 111, 116, 130, 140, 154, 161, 162, 163, 164, 165, 166, and 170 manufactured by Big Chemie Japan. 171, 174, 180, 181, 182, 183, 184, 185, 190, 2000, 2001, 2020, 2025, 2050, 2070, 2095, 2150, 2155, or Anti-Terra-U, 203, 204, or BYK -SOLPERSE-3000, 9000, 13000, 13240, 13650, 13940, 160 manufactured by Nippon Lubrizol Corporation, such as P104, P104S, 220S, 6919, or Lactimon, Lactimon-WS or Bykumen, etc. 0, 17000, 18000, 20000, 21000, 24000, 26000, 27000, 28000, 31845, 32000, 32500, 32550, 33500, 32600, 34750, 35100, 36600, 38500, 41000, 41090, 53095, 55000, 76500, etc. -EFKA-46, 47, 48, 452, 4008, 4009, 4010, 4015, 4020, 4047, 4050, 4055, 4060, 4080, 4400, 4401, 4402, 4403, 4406, 4408, 4300, 4310, manufactured by Japan 4320, 4330, 4340, 450, 451, 453, 4540, 4550, 4560, 4800, 5010, 5065, 5066, 5070, 7500, 7 54,1101,120,150,1501,1502,1503, etc., Ajinomoto Fine-Techno Co., Ltd. of AJISPER PA111, PB711, PB821, PB822, PB824, and the like.

  As the resin-type dispersant, an acidic resin-type dispersant having an aromatic carboxyl group is particularly preferable, a polymer having a hydroxyl group at one end, an aromatic tricarboxylic acid anhydride and / or an aromatic tetracarboxylic acid dianhydride. Most preferably, the dispersant is obtained by reacting with. Examples of such resin-type dispersants include Japanese Patent No. 40201050, Japanese Patent Application Laid-Open No. 2007-140487, International Publication No. 2008/007776, Japanese Patent Application Laid-Open No. 2010-163500, and Japanese Patent Application Laid-Open No. 2010-223888. And exhibits excellent effects such as compatibility between fluidity and dispersibility.

  Among these, a preferable resin-type dispersant is a radical polymerization of an ethylenically unsaturated monomer in the presence of a compound having two hydroxyl groups and one thiol group in the molecule described in WO2008 / 007776 pamphlet. A polyester dispersant produced by reacting a hydroxyl group in a vinyl copolymer having two hydroxyl groups in one terminal region with an acid anhydride group in tetracarboxylic dianhydride is preferable. More preferably, the polyester dispersant is characterized in that the tetracarboxylic dianhydride contains an aromatic tetracarboxylic dianhydride. Color filter coloring compositions using these polyester dispersants are preferable because they are excellent in pigment dispersion stability, and are synthesized using the method described in WO2008 / 007776 pamphlet or the like. be able to.

Moreover, as a preferable resin type dispersing agent, the resin type dispersing agent shown by the following formula as described in Unexamined-Japanese-Patent No. 2007-140487 etc. is mentioned.
_{(HOOC-) m -R 14 - (} - COO - [- R 16 -COO-] q -R 15) t
[Wherein R ₁₄ is a tetravalent tetracarboxylic acid compound residue, R ₁₅ is a monoalcohol residue, R ₁₆ is a lactone residue, m is 2 or 3, q is an integer of 1 to 50, and t is (4 -M). ]

  A coloring composition for a color filter using an acidic resin type dispersant having an aromatic carboxyl group has very excellent pigment dispersion stability.

  The acid value of the resin-type dispersant is preferably 200 mgKOH / g or less, more preferably 40 to 200 mgKOH / g, and most preferably 40 to 150 mgKOH / g from the viewpoint of dispersion stability. The weight average molecular weight (Mw) of the resin-type dispersant is preferably in the range of 1000 to 50000, more preferably 1000 to 30000.

[Surfactant]
Surfactants include sodium lauryl sulfate, polyoxyethylene alkyl ether sulfate, sodium dodecylbenzene sulfonate, alkali salt of styrene-acrylic acid copolymer, sodium stearate, sodium alkyl naphthalene sulfonate, sodium alkyl diphenyl ether disulfonate Anionic surfactants such as lauryl sulfate monoethanolamine, lauryl sulfate triethanolamine, ammonium lauryl sulfate, monoethanolamine stearate, monoethanolamine of styrene-acrylic acid copolymer, polyoxyethylene alkyl ether phosphate; Polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene Nonionic surfactants such as alkyl ether phosphates, polyoxyethylene sorbitan monostearate and polyethylene glycol monolaurate; chaotic surfactants such as alkyl quaternary ammonium salts and their ethylene oxide adducts; alkyldimethylamino Examples include amphoteric surfactants such as alkylbetaines such as betaine acetate and alkylimidazolines, and these can be used alone or in admixture of two or more, but are not necessarily limited thereto.

  When a resin type dispersant and a surfactant are added, the amount is preferably 0.1 to 55 parts by weight, more preferably 0.1 to 45 parts by weight with respect to 100 parts by weight of the pigment. When the blending amount of the resin-type dispersant and the surfactant is less than 0.1 parts by weight, it is difficult to obtain the added effect. When the blending amount is more than 55 parts by weight, the dispersion is affected by an excessive dispersant. May affect.

(solvent)
In the colored composition of the present invention, the pigment is sufficiently dispersed and permeated in the pigment carrier, and applied to a substrate such as a glass substrate so as to have a dry film thickness of 0.2 to 5 μm to form a filter segment. In order to facilitate this, a solvent can be included.
Examples of the solvent include benzyl alcohol, 1,2,3-trichloropropane, 1,3-butanediol, 1,3-butylene glycol, 1,3-butylene glycol diacetate, 1,4-dioxane, 2-heptanone, 2-methyl-1,3-propanediol, 3,5,5-trimethyl-2-cyclohexen-1-one, 3,3,5-trimethylcyclohexanone, ethyl 3-ethoxypropionate, 3-methyl-1,3 -Butanediol, 3-methoxy-3-methyl-1-butanol, 3-methoxy-3-methylbutyl acetate, 3-methoxybutanol, 3-methoxybutyl acetate, 4-heptanone, m-xylene, m-diethylbenzene, m -Dichlorobenzene, N, N-dimethylacetamide, N, N-dimethylformamide, n-butyl alcohol, n-butylbenzene, n-propyl acetate, o-alkyl Silene, o-chlorotoluene, o-diethylbenzene, o-dichlorobenzene, p-chlorotoluene, p-diethylbenzene, sec-butylbenzene, tert-butylbenzene, γ-butyrolactone, isobutyl alcohol, isophorone, ethylene glycol diethyl ether, ethylene Glycol dibutyl ether, ethylene glycol monoisopropyl ether, ethylene glycol monoethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol monotertiary butyl ether, ethylene glycol monobutyl ether, ethylene glycol monobutyl ether acetate, ethylene glycol monopropyl ether, ethylene glycol mono Hexyl ether, ethylene glycol monomethyl ether , Ethylene glycol monomethyl ether acetate, diisobutyl ketone, diethylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol monoisopropyl ether, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether, diethylene glycol monobutyl ether acetate, diethylene glycol monomethyl ether, cyclohexanol, cyclohexanol acetate, cyclohexanone , Dipropylene glycol dimethyl ether, dipropylene glycol methyl ether acetate, dipropylene glycol monoethyl ether, dipropylene glycol monobutyl ether, dipropylene glycol monopropyl ether, dipro Lenglycol monomethyl ether, diacetone alcohol, triacetin, tripropylene glycol monobutyl ether, tripropylene glycol monomethyl ether, propylene glycol diacetate, propylene glycol phenyl ether, propylene glycol monoethyl ether, propylene glycol monoethyl ether acetate, propylene glycol monobutyl ether , Propylene glycol monopropyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether propionate, benzyl alcohol, methyl isobutyl ketone, methyl cyclohexanol, n-amyl acetate, n-butyl acetate, isoamyl acetate, vinegar Isobutyl, propyl acetate, dibasic esters, butyl lactate and the like.

  Among them, since the dispersibility of the pigment of the present invention is good, glycol acetates such as propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, benzyl alcohol, etc. It is preferable to use ketones such as aromatic alcohols and cyclohexanone. Moreover, a solvent can be used individually by 1 type or in mixture of 2 or more types.

  Further, the solvent can be adjusted to an appropriate viscosity according to the dispersion condition of the mixture, and a filter segment having a desired uniform film thickness can be formed from the obtained pigment composition. Therefore, with respect to 100 parts by weight of the pigment, It is preferably used in an amount of 200 to 4000 parts by weight.

(Removal of coarse particles)
The colored composition for a color filter of the present invention is a coarse particle having a size of 5 μm or more, preferably a coarse particle having a size of 1 μm or more, more preferably a coarse particle having a size of 0.5 μm or more. It is preferable to remove the mixed dust. Thus, it is preferable that the coloring composition for color filters substantially does not contain particles of 0.5 μm or more. More preferably, it is 0.3 μm or less.

(Photopolymerizable monomer)
The photopolymerizable monomer of the present invention includes a monomer or oligomer that is cured by ultraviolet rays or heat to produce a transparent resin.

Examples of monomers and oligomers that are cured by ultraviolet rays or heat to produce a transparent resin include methyl (meth) acrylate, ethyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, and 2-hydroxypropyl (meth) acrylate. , Cyclohexyl (meth) acrylate, β-carboxyethyl (meth) acrylate, polyethylene glycol di (meth) acrylate, 1,6-hexanediol di (meth) acrylate, triethylene glycol di (meth) acrylate, tripropylene glycol di ( (Meth) acrylate, trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, 1,6-hexanediol diglycy Ether di (meth) acrylate, bisphenol A diglycidyl ether di (meth) acrylate, neopentyl glycol diglycidyl ether di (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, tricyclodeca Nyl (meth) acrylate, ester acrylate, methylolated melamine (meth) acrylate ester, epoxy (meth) acrylate, urethane acrylate and other acrylic esters and methacrylate esters, (meth) acrylic acid, styrene, vinyl acetate, Hydroxyethyl vinyl ether, ethylene glycol divinyl ether, pentaerythritol trivinyl ether, (meth) acrylamide, N-hydroxymethyl Examples include, but are not necessarily limited to, til (meth) acrylamide, N-vinylformamide, acrylonitrile and the like.
These photopolymerizable monomers can be used singly or in combination of two or more at any ratio as required.

  The blending amount of the photopolymerizable monomer is preferably 5 to 400 parts by weight with respect to 100 parts by weight of the pigment, and more preferably 10 to 300 parts by weight from the viewpoint of photocurability and developability.

(Photopolymerization initiator)
In the colored composition of the present invention, a photopolymerization initiator is added to form a filter segment by photolithography by curing the composition by ultraviolet irradiation, and a solvent developing type or alkaline developing type photosensitive coloring composition is added. It can be prepared in the form of a product.

Examples of the photopolymerization initiator include 4-phenoxydichloroacetophenone, 4-t-butyl-dichloroacetophenone, diethoxyacetophenone, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 1- Hydroxycyclohexyl phenyl ketone, 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2- (dimethylamino) -2-[(4-methylphenyl) methyl] -1 Acetophenone compounds such as-[4- (4-morpholinyl) phenyl] -1-butanone or 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butan-1-one; benzoin, benzoin Methyl ether, benzoin ethyl ether, benzoin isopropyl ether, or Benzoin compounds such as dimethyl dimethyl ketal; benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, or 3,3 ', 4 Benzophenone compounds such as 4,4'-tetra (t-butylperoxycarbonyl) benzophenone; thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, isopropylthioxanthone, 2,4-diisopropylthioxanthone, 2,4-diethylthioxanthone, etc. 2,4,6-trichloro-s-triazine, 2-phenyl-4,6-bis (trichloromethyl) -s-triazine, 2- (p-methoxyphenyl) Nyl) -4,6-bis (trichloromethyl) -s-triazine, 2- (p-tolyl) -4,6-bis (trichloromethyl) -s-triazine, 2-piperonyl-4,6-bis (trichloro Methyl) -s-triazine, 2,4-bis (trichloromethyl) -6-styryl-s-triazine, 2- (naphth-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2 -(4-Methoxy-naphth-1-yl) -4,6-bis (trichloromethyl) -s-triazine, 2,4-trichloromethyl- (piperonyl) -6-triazine, or 2,4-trichloromethyl- Triazine compounds such as (4′-methoxystyryl) -6-triazine; 1,2-octanedione, 1- [4- (phenylthio)-, 2- (O-benzoyloxime)] Or an oxime ester compound such as O- (acetyl) -N- (1-phenyl-2-oxo-2- (4′-methoxy-naphthyl) ethylidene) hydroxylamine; bis (2,4,6-trimethylbenzoyl) Phosphine compounds such as phenylphosphine oxide or 2,4,6-trimethylbenzoyldiphenylphosphine oxide; quinone compounds such as 9,10-phenanthrenequinone, camphorquinone and ethylanthraquinone; borate compounds; carbazole compounds; An imidazole compound; or a titanocene compound or the like is used.
These photoinitiators can be used individually by 1 type or in mixture of 2 or more types by arbitrary ratios as needed.

  The content of the photopolymerization initiator is preferably 2 to 200 parts by weight with respect to 100 parts by weight of the pigment, and more preferably 3 to 150 parts by weight from the viewpoint of photocurability and developability.

(Sensitizer)
Furthermore, the coloring composition of the present invention can contain a sensitizer.
Sensitizers include chalcone derivatives, unsaturated ketones such as dibenzalacetone, 1,2-diketone derivatives such as benzyl and camphorquinone, benzoin derivatives, fluorene derivatives, naphthoquinone derivatives, anthraquinone derivatives , Xanthene derivatives, thioxanthene derivatives, xanthone derivatives, thioxanthone derivatives, coumarin derivatives, ketocoumarin derivatives, cyanine derivatives, merocyanine derivatives, oxonol derivatives, and other polymethine dyes, acridine derivatives, azine derivatives, thiazine derivatives, oxazine derivatives, indoline derivatives, Azulene derivatives, azurenium derivatives, squarylium derivatives, porphyrin derivatives, tetraphenylporphyrin derivatives, triarylmethane derivatives, tetrabenzoporphyrin derivatives, Trapirazinoporphyrazine derivatives, phthalocyanine derivatives, tetraazaporphyrazine derivatives, tetraquinoxalyloporphyrazine derivatives, naphthalocyanine derivatives, subphthalocyanine derivatives, pyrylium derivatives, thiopyrylium derivatives, tetraphyrin derivatives, annulene derivatives, spiropyran derivatives, spirooxazine Derivatives, thiospiropyran derivatives, metal arene complexes, organoruthenium complexes, or Michler's ketone derivatives, biimidazole derivatives, α-acyloxy esters, acylphosphine oxides, methylphenylglyoxylate, benzyl, 9,10-phenanthrenequinone, Camphorquinone, ethylanthraquinone, 4,4′-diethylisophthalophenone, 3,3 ′, or 4,4′-tetra (t-butylperoxyca Rubonyl) benzophenone, 4,4′-diethylaminobenzophenone and the like.
These sensitizers can be used singly or in combination of two or more at any ratio as necessary.

  More specifically, edited by Shin Okawara et al., “Dye Handbook” (1986, Kodansha), edited by Shin Okawara et al., “Chemistry of Functional Dye” (1981, CMC), edited by Tadasaburo Ikemori et al. Examples include, but are not limited to, sensitizers described in "Special Functional Materials" (1986, CMC). In addition, a sensitizer that absorbs light from the ultraviolet region to the near infrared region can also be contained.

  The content of the sensitizer is preferably 3 to 60 parts by weight with respect to 100 parts by weight of the photopolymerization initiator contained in the colored composition, and 5 to 50 parts by weight from the viewpoint of photocurability and developability. It is more preferable that

(Multifunctional thiol)
The coloring composition of the present invention can contain a polyfunctional thiol that functions as a chain transfer agent.
The polyfunctional thiol may be a compound having two or more thiol groups. For example, hexanedithiol, decanedithiol, 1,4-butanediol bisthiopropionate, 1,4-butanediol bisthioglycolate, ethylene Glycol bisthioglycolate, ethylene glycol bisthiopropionate, trimethylolpropane tristhioglycolate, trimethylolpropane tristhiopropionate, trimethylolpropane tris (3-mercaptobutyrate), pentaerythritol tetrakisthioglycolate, Pentaerythritol tetrakisthiopropionate, trimercaptopropionic acid tris (2-hydroxyethyl) isocyanurate, 1,4-dimethylmercaptobenzene,
2,4,6-trimercapto-s-triazine, 2- (N, N-dibutylamino) -4,6-dimercapto-s-triazine and the like. These polyfunctional thiols can be used singly or in combination of two or more in any ratio as necessary.

  The content of the polyfunctional thiol is preferably 0.1 to 30% by weight, more preferably 1 to 20% by weight based on the weight (100% by weight) of the total solid content of the color filter coloring composition. . If the content of the polyfunctional thiol is less than 0.1% by weight, the effect of adding the polyfunctional thiol is insufficient, and if it exceeds 30% by weight, the sensitivity is too high and the resolution is lowered.

(Antioxidant)
The coloring composition of the present invention can contain an antioxidant. Antioxidants are used to prevent the photopolymerization initiators and thermosetting compounds contained in the color filter coloring composition from oxidizing and yellowing due to thermal processes during thermal curing and ITO annealing. Can be high. Therefore, by including an antioxidant, yellowing due to oxidation during the heating step can be prevented, and a high coating film transmittance can be obtained.

  The “antioxidant” in the present invention may be a compound having an ultraviolet absorbing function, a radical scavenging function, or a peroxide decomposing function. Specifically, as an antioxidant, a hindered phenol type, a hindered amine type are used. , Phosphorus-based, sulfur-based, benzotriazole-based, benzophenone-based, hydroxylamine-based, salicylate-based, and triazine-based compounds, and known ultraviolet absorbers, antioxidants, and the like can be used.

  Among these antioxidants, a hindered phenol antioxidant, a hindered amine antioxidant, a phosphorus antioxidant, or a sulfur antioxidant is preferable from the viewpoint of achieving both transmittance and sensitivity of the coating film. Agents. More preferably, they are hindered phenolic antioxidants, hindered amine antioxidants, or phosphorus antioxidants.

  These antioxidants can be used singly or in combination of two or more at any ratio as required.

  When the content of the antioxidant is 0.5 to 5.0% by weight based on the solid content weight of the color filter coloring composition (100% by weight), brightness and sensitivity are more preferable.

(Amine compounds)
The coloring composition of the present invention can contain an amine compound that functions to reduce dissolved oxygen.

  Such amine compounds include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, 2-dimethylaminobenzoate. Examples include ethyl, 2-ethylhexyl 4-dimethylaminobenzoate, and N, N-dimethylparatoluidine.

(Leveling agent)
In order to improve the leveling property of the composition on the transparent substrate, it is preferable to add a leveling agent to the colored composition of the present invention. As the leveling agent, dimethylsiloxane having a polyether structure or a polyester structure in the main chain is preferable. Specific examples of dimethylsiloxane having a polyether structure in the main chain include FZ-2122 manufactured by Toray Dow Corning, BYK-333 manufactured by Big Chemie. Specific examples of dimethylsiloxane having a polyester structure in the main chain include BYK-310 and BYK-370 manufactured by BYK Chemie. Dimethylsiloxane having a polyether structure in the main chain and dimethylsiloxane having a polyester structure in the main chain can be used in combination. In general, the leveling agent content is preferably 0.003 to 0.5% by weight based on the total weight of the coloring composition (100% by weight).

  Particularly preferred as a leveling agent is a kind of so-called surfactant having a hydrophobic group and a hydrophilic group in the molecule, having a hydrophilic group but low solubility in water, and when added to a coloring composition, It has the characteristics of low surface tension reduction ability, and it is useful to have good wettability to the glass plate despite its low surface tension reduction ability. Those that can sufficiently suppress the chargeability can be preferably used. As a leveling agent having such preferable characteristics, dimethylpolysiloxane having a polyalkylene oxide unit can be preferably used. Examples of the polyalkylene oxide unit include a polyethylene oxide unit and a polypropylene oxide unit, and dimethylpolysiloxane may have both a polyethylene oxide unit and a polypropylene oxide unit.

  In addition, the bonding form of the polyalkylene oxide unit with dimethylpolysiloxane includes a pendant type in which the polyalkylene oxide unit is bonded in the repeating unit of dimethylpolysiloxane, a terminal-modified type in which the end of dimethylpolysiloxane is bonded, and dimethylpolysiloxane. Any of linear block copolymer types in which they are alternately and repeatedly bonded may be used. Dimethylpolysiloxane having a polyalkylene oxide unit is commercially available from Toray Dow Corning Co., Ltd., for example, FZ-2110, FZ-2122, FZ-2130, FZ-2166, FZ-2191, FZ-2203, FZ. -2207, but is not limited thereto.

An anionic, cationic, nonionic or amphoteric surfactant can be supplementarily added to the leveling agent. Two or more kinds of surfactants may be mixed and used.
Anionic surfactants added to the leveling agent as auxiliary agents include polyoxyethylene alkyl ether sulfate, sodium dodecylbenzene sulfonate, alkali salt of styrene-acrylic acid copolymer, sodium alkyl naphthalene sulfonate, alkyl diphenyl ether disulfonic acid Sodium, lauryl sulfate monoethanolamine, lauryl sulfate triethanolamine, ammonium lauryl sulfate, monoethanolamine stearate, sodium stearate, sodium lauryl sulfate, monoethanolamine of styrene-acrylic acid copolymer, polyoxyethylene alkyl ether phosphate Examples include esters.

  Examples of the chaotic surfactant that is supplementarily added to the leveling agent include alkyl quaternary ammonium salts and their ethylene oxide adducts. Nonionic surfactants added to the leveling agent as auxiliary agents include polyoxyethylene oleyl ether, polyoxyethylene lauryl ether, polyoxyethylene nonylphenyl ether, polyoxyethylene alkyl ether phosphate ester, polyoxyethylene sorbitan monostearate And amphoteric surfactants such as alkyl dimethylamino acetic acid betaine and alkylimidazolines, and fluorine-based and silicone-based surfactants.

(Curing agent, curing accelerator)
Moreover, in order to assist hardening of a thermosetting resin, the coloring composition of this invention may contain the hardening | curing agent, the hardening accelerator, etc. as needed. As the curing agent, phenolic resins, amine compounds, acid anhydrides, active esters, carboxylic acid compounds, sulfonic acid compounds and the like are effective, but are not particularly limited to these, and thermosetting resins. Any curing agent may be used as long as it can react with the. Among these, a compound having two or more phenolic hydroxyl groups in one molecule and an amine curing agent are preferable. Examples of the curing accelerator include amine compounds (for example, dicyandiamide, benzyldimethylamine, 4- (dimethylamino) -N, N-dimethylbenzylamine, 4-methoxy-N, N-dimethylbenzylamine, 4-methyl). -N, N-dimethylbenzylamine etc.), quaternary ammonium salt compounds (eg triethylbenzylammonium chloride etc.), blocked isocyanate compounds (eg dimethylamine etc.), imidazole derivative bicyclic amidine compounds and salts thereof (eg Imidazole, 2-methylimidazole, 2-ethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 4-phenylimidazole, 1-cyanoethyl-2-phenylimidazole, 1- (2-cyanoethyl) -2- Til-4-methylimidazole, etc.), phosphorus compounds (eg, triphenylphosphine, etc.), guanamine compounds (eg, melamine, guanamine, acetoguanamine, benzoguanamine, etc.), S-triazine derivatives (eg, 2,4-diamino-6) -Methacryloyloxyethyl-S-triazine, 2-vinyl-2,4-diamino-S-triazine, 2-vinyl-4,6-diamino-S-triazine isocyanuric acid adduct, 2,4-diamino-6 Methacryloyloxyethyl-S-triazine / isocyanuric acid adduct, etc.) can be used. These may be used alone or in combination of two or more. As content of the said hardening accelerator, 0.01-15 weight part is preferable with respect to 100 weight part of thermosetting resins.

(Other additive components)
The coloring composition of the present invention may contain a storage stabilizer in order to stabilize the viscosity with time. Moreover, in order to improve adhesiveness with a transparent substrate, adhesion improving agents, such as a silane coupling agent, can also be contained.

  Examples of storage stabilizers include quaternary ammonium chlorides such as benzyltrimethyl chloride and diethylhydroxyamine, organic acids such as lactic acid and oxalic acid, and methyl ethers thereof, t-butylpyrocatechol, tetraethylphosphine, and tetraphenylphosphine. Organic phosphines, phosphites and the like can be mentioned. The storage stabilizer can be used in an amount of 0.1 to 10 parts by weight with respect to 100 parts by weight of the colorant.

  Examples of the adhesion improver include vinyl silanes such as vinyltris (β-methoxyethoxy) silane, vinylethoxysilane and vinyltrimethoxysilane, (meth) acrylsilanes such as γ-methacryloxypropyltrimethoxysilane, β- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, β- (3,4-epoxycyclohexyl) methyltrimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltriethoxysilane, β- (3,4-epoxycyclohexyl) Epoxysilanes such as methyltriethoxysilane, γ-glycidoxypropyltrimethoxysilane, γ-glycidoxypropyltriethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, N-β (amino Ethyl) γ-aminopropyltrie Xisilane, N-β (aminoethyl) γ-aminopropylmethyldiethoxysilane, γ-aminopropyltriethoxysilane, γ-aminopropyltrimethoxysilane, N-phenyl-γ-aminopropyltrimethoxysilane, N-phenyl Examples include silane coupling agents such as aminosilanes such as -γ-aminopropyltriethoxysilane, and thiosilanes such as γ-mercaptopropyltrimethoxysilane and γ-mercaptopropyltriethoxysilane. The adhesion improver can be used in an amount of 0.01 to 10 parts by weight, preferably 0.05 to 5 parts by weight, with respect to 100 parts by weight of the colorant in the coloring composition.

<Color filter>
The color filter of the present invention comprises at least one filter segment formed using the color filter coloring composition formed by the method for producing a color filter coloring composition of the present invention. .

  The color filter comprises at least one red filter segment, at least one green filter segment, and at least one blue filter segment, and the at least one red filter segment is a red coloring composition for a color filter of the present invention. It is preferable to use a product.

<Color filter manufacturing method>
The color filter of the present invention can be produced by a printing method or a photolithography method.
(Printing method)
The formation of the filter segment by the printing method can be patterned simply by repeating the printing and drying of the coloring composition prepared as the printing ink. Therefore, the color filter manufacturing method is low in cost and excellent in mass productivity. Furthermore, it is possible to print a fine pattern having high dimensional accuracy and smoothness by the development of printing technology. In order to perform printing, it is preferable that the ink does not dry and solidify on the printing plate or on the blanket. Control of ink fluidity on a printing press is also important, and ink viscosity can be adjusted with a dispersant or extender pigment.

(Photolithography method)
When forming a filter segment by a photolithography method, the photosensitive coloring composition prepared as the solvent development type or alkali development type coloring composition is spray coated, spin coated, slit coated, roll coated, etc. on a transparent substrate. The coating method is applied so that the dry film thickness is 0.2 to 5 μm. If necessary, the dried film is exposed to ultraviolet rays, which are active energy rays, through a mask having a predetermined pattern provided in contact with or non-contact with the film. Then, after immersing in a solvent or alkali developer or spraying the developer by spraying or the like to remove the uncured portion to form a desired pattern, the same operation is repeated for other colors to produce a color filter. be able to. Furthermore, in order to accelerate | stimulate superposition | polymerization of a coloring composition, it can also heat as needed. According to the photolithography method, a color filter with higher accuracy than the above printing method can be manufactured.

In development, an aqueous solution such as sodium carbonate or sodium hydroxide is used as an alkali developer, and an organic alkali such as dimethylbenzylamine or triethanolamine can also be used. Moreover, an antifoamer and surfactant can also be added to a developing solution.
In order to increase the UV exposure sensitivity, after coating and drying the colored composition, a water-soluble or alkaline water-soluble resin such as polyvinyl alcohol or water-soluble acrylic resin is applied and dried to form a film that prevents polymerization inhibition by oxygen. Then, ultraviolet exposure can be performed.

  The color filter of the present invention can be produced by an electrodeposition method, a transfer method, etc. in addition to the above method, but the colored composition of the present invention can be used in any method. The electrodeposition method is a method for producing a color filter by using a transparent conductive film formed on a substrate and forming each color filter segment on the transparent conductive film by electrophoresis of colloidal particles. . The transfer method is a method in which a filter segment is formed in advance on the surface of a peelable transfer base sheet, and this filter segment is transferred to a desired substrate.

  The colored composition of the present invention can be used in any of the methods described above, but is most suitable for the photolithography method.

  A black matrix can be formed in advance before forming each color filter segment on a transparent substrate or a reflective substrate. As the black matrix, a chromium, chromium / chromium oxide multilayer film, an inorganic film such as titanium nitride, or a resin film in which a light-shielding agent is dispersed is used, but is not limited thereto. In addition, a thin film transistor (TFT) may be formed in advance on the transparent substrate or the reflective substrate, and then each color filter segment may be formed. On the color filter of the present invention, an overcoat film, a columnar spacer, a transparent conductive film, a liquid crystal alignment film, and the like are formed as necessary.

  The color filter is bonded to the counter substrate using a sealant, and after injecting liquid crystal from the injection port provided in the seal part, the injection port is sealed, and if necessary, a polarizing film or a retardation film is placed outside the substrate. A liquid crystal display panel is manufactured by bonding.

Such liquid crystal display panels include twisted nematic (TN), super twisted nematic (STN), in-plane switching (IPS), vertical alignment (VA), and optically convented bend (OCB). It can be used in a liquid crystal display mode in which colorization is performed using a color filter such as the above.

  Hereinafter, the present invention will be described based on examples, but the present invention is not limited thereto. In the examples, “parts” and “%” represent “parts by weight” and “% by weight”, respectively.

Prior to the examples, a method for measuring the contrast ratio of the colored composition-coated substrate will be described.
The coloring composition-coated substrate is sandwiched between two polarizing plates, and light is irradiated from one polarizing plate side using a backlight unit for liquid crystal display. The light emitted from the backlight unit passes through the first polarizing plate and is polarized, and then passes through the resist material-coated substrate and reaches the second polarizing plate. If the polarization planes of the first polarizing plate and the second polarizing plate are parallel, the light passes through the second polarizing plate, but if the polarization plane is perpendicular, the light passes through the second polarizing plate. Are blocked by the polarizing plate. However, when the light polarized by the first polarizing plate passes through the resist material coated substrate, scattering by pigment particles or the like causes a deviation in a part of the polarization plane. When the amount of light transmitted through the second polarizing plate is reduced and the deflecting plate is perpendicular, a part of the light is transmitted through the second polarizing plate. This transmitted light is measured as the luminance on the polarizing plate, and the ratio between the luminance when the polarizing plate is parallel and the luminance when the polarizing plate is orthogonal is defined as the contrast ratio.
Contrast ratio = (Luminance when parallel) / (Luminance when direct)

Accordingly, when scattering occurs due to the pigment in the colored composition coating film, the brightness when parallel is reduced and the brightness when perpendicular is increased, the contrast ratio is lowered.
The luminance meter was a color luminance meter BM-5A manufactured by Topcon Corporation, and the polarizing plate was a polarizing film LLC2-92-18 manufactured by Sanritsu. In the measurement, in order to block unnecessary light, measurement was performed by applying a black mask having a 1 cm square hole in the measurement portion.

Then, the manufacturing method of resin used for the Example and the comparative example, and the manufacturing method of a resin type dispersing agent are demonstrated.
The weight average molecular weight (Mw) of the resin was measured by using TSKgel column (manufactured by Tosoh Corporation) and GPC equipped with RI detector (manufactured by Tosoh Corporation, HLC-8120GPC) using THF as a developing solvent. It is a weight average molecular weight (Mw) in terms of conversion.

<Production method of resin>
(Acrylic resin solution)
A reaction vessel equipped with a separable four-necked flask equipped with a thermometer, a cooling tube, a nitrogen gas introduction tube, and a stirrer was charged with 70.0 parts of cyclohexanone, heated to 80 ° C., and the inside of the reaction vessel was purged with nitrogen. 13.3 parts of n-butyl methacrylate, 4.6 parts of 2-hydroxyethyl methacrylate, 4.3 parts of methacrylic acid, 7.4 parts of paracumylphenol ethylene oxide modified acrylate (“Aronix M110” manufactured by Toagosei Co., Ltd.), A mixture of 0.4 part of 2,2′-azobisisobutyronitrile was added dropwise over 2 hours. After completion of the dropwise addition, the reaction was further continued for 3 hours to obtain an acrylic resin solution having a weight average molecular weight of 26000. After cooling to room temperature, about 2 g of resin solution was sampled and heated and dried at 180 ° C. for 20 minutes to measure the non-volatile content. Propylene glycol monomethyl ether so that the non-volatile content was 20% by weight in the previously synthesized resin solution. Acetate was added to prepare an acrylic resin solution.

<Method for producing resin-type dispersant>
(Resin type dispersant A solution)
In a reaction vessel equipped with a gas introduction tube, a condenser, a stirring blade, and a thermometer, 100 parts of methyl methacrylate, 100 parts of n-butyl acrylate, and 40 parts of propylene glycol monomethyl ether acetate were charged and replaced with nitrogen gas. After heating the inside of the reaction vessel to 80 ° C. and adding 12 parts of 3-mercapto-1,2-propanediol, 0.2 part of 2,2′-azobisisobutyronitrile is divided into 20 portions. It was added every minute and reacted for 12 hours at 80 ° C., and it was confirmed by solid content measurement that 95% had reacted. Next, 30 parts of pyromellitic anhydride, 190 parts of propylene glycol monomethyl ether acetate, and 0.40 part of 1,8-diazabicyclo- [5.4.0] -7-undecene as a catalyst were added. Reacted for hours. It was confirmed by titration that 98% or more of the acid anhydride had been half-esterified, and the reaction was completed. In this way, a resinous dispersant A solution having a poly (meth) acrylate skeleton having an acid value per solid content of 63 mgKOH / g and a nonvolatile content of 40% by weight and having an aromatic carboxyl group was obtained.

<Distribution conditions>
The series circuit of FIG. 1 was used.
As the media type disperser, a picograin mill manufactured by Asada Tekko Co., Ltd. was used, and as a ultrasonic homogenizer, UIP1000 manufactured by Hielsha Ultrasonic Co., Ltd. was used, and the conditions shown in Table 1 were used.
The media used in the media type disperser had the particle sizes shown in Table 1, and the filling rate was 60%.

[Example 1]
(Red coloring composition (RP-1))
After uniformly stirring and mixing the pigment composition having the following composition, dispersion was performed for 3 hours under dispersion condition 1 shown in Table 1 using 0.1 mmφ zirconia beads, and 23 parts of propylene glycol monomethyl ether acetate (PGMAC) After adding and diluting, it filtered with a 1.0 micrometer filter and obtained the coloring composition (PR-1).

Red pigment (CI Pigment Red 254): 16.0 parts acrylic resin solution: 37.3 parts propylene glycol monomethyl ether acetate (PGMAC): 18.1 parts resin type dispersant “EFKA4300” manufactured by Ciba Japan Co., Ltd .: 8.5 parts

[Examples 2-3]
(Red coloring composition (RP-2 to 3))
A red colored composition (RP-2 to 3) was obtained in the same manner as Example 1 (red colored composition (RP-1)) except that the media diameter of the zirconia beads was changed as described in Table 1. .

[Examples 4 to 6]
(Red coloring composition (RP-4 to 6))
A red colored composition (RP-4 to 6) was obtained in the same manner as in Example 1 (red colored composition (RP-1)) except that the ultrasonic frequency was changed as described in Table 1.

[Example 7]
(Green coloring composition (GP-1))
After uniformly stirring and mixing the pigment composition having the following composition, dispersion was performed for 3 hours under dispersion condition 1 shown in Table 1 using 0.1 mmφ zirconia beads, and 23 parts of propylene glycol monomethyl ether acetate (PGMAC) After adding and diluting, it filtered with a 1.0 micrometer filter and obtained the coloring composition (GP-1).

Green pigment (CI Pigment Green 58): 14.8 parts Acrylic resin solution: 50.6 parts Propylene glycol monomethyl ether acetate (PGMAC): 3.9 parts Resin-type dispersant ("BYK-111" manufactured by BYK Chemie) : 4.7 parts

[Example 8]
(Blue coloring composition (BP-1))
After uniformly stirring and mixing the pigment composition having the following composition, dispersion was performed for 3 hours under dispersion condition 1 shown in Table 1 using 0.1 mmφ zirconia beads, and 23 parts of propylene glycol monomethyl ether acetate (PGMAC) After adding and diluting, it filtered with a 1.0 micrometer filter and obtained the coloring composition (BP-1).

Blue pigment (CI Pigment Blue 15: 6): 16.0 parts acrylic resin solution: 52.1 parts cyclohexanone: 6.2 parts resin-type dispersant ("BYK-111" manufactured by BYK Chemie): 5.6 Part

[Example 9]
(Yellow coloring composition (YP-1))
After uniformly stirring and mixing the pigment composition having the following composition, dispersion was performed for 3 hours under dispersion condition 1 shown in Table 1 using 0.1 mmφ zirconia beads, and 23 parts of propylene glycol monomethyl ether acetate (PGMAC) After adding and diluting, it filtered with a 1.0 micrometer filter and obtained the coloring composition (YP-1).

Yellow pigment (CI Pigment Yellow 150): 16.0 parts acrylic resin solution: 51.7 parts propylene glycol monomethyl ether acetate (PGMAC): 6.7 parts resin-type dispersant ("BYK-111" manufactured by BYK Chemie) : 5.6 parts

[Comparative Example 1]
(Red coloring composition (RP-7))
A red colored composition (RP-7) was obtained in the same manner as in Example 1 (red colored composition (RP-1)) except that the ultrasonic homogenizer dispersion was omitted.

[Comparative Example 2]
(Red coloring composition (RP-8))
A red colored composition (RP-8) was obtained in the same manner as in Example 1 (red colored composition (RP-1)) except that the dispersion treatment with media was omitted.

[Comparative Example 3]
(Red coloring composition (RP-9))
A red colored composition (RP-9) was obtained in the same manner as in Example 1 (red colored composition (RP-1)) except that the dispersion treatment using media and the dispersion treatment using ultrasonic waves were performed in a stepwise manner.

[Evaluation of coloring composition for color filter]
The initial viscosity, time-dependent viscosity, viscosity stability, and contrast ratio of the colored compositions obtained in Examples and Comparative Examples were evaluated by the following methods. The results are shown in Table 2.

"Initial viscosity"
The viscosity at 25 ° C. of each colored composition was measured at a rotation speed of 20 rpm using an E-type viscometer (TVE-20L type manufactured by TOKI SANGYO).

"Viscosity stability"
The viscosity promoted for 1 week at 40 ° C. was measured in the same manner, and the difference was measured to determine the viscosity stability (accelerated viscosity-initial viscosity) [mPa · s].

[Examples 10 to 15 and Comparative Examples 4 to 6]
(Red photosensitive coloring composition (RR-1 to 6))
After stirring and mixing the mixture of the composition and blending amount (parts by weight) shown in Table 3 so as to be uniform, it was filtered through a 1.0 μm filter to obtain photosensitive colored compositions (RR-1 to RR-6). .
In addition, it was set as the red photosensitive coloring composition (RR-1-6), respectively corresponding to the red coloring composition (PR-1-6).

[Example 16]
(Green photosensitive coloring composition (RG-1))
A mixture having the composition and blending amount (parts by weight) shown in Table 3 was stirred and mixed so as to be uniform, and then filtered through a 1.0 μm filter to obtain a green photosensitive coloring composition (RG-1).

[Example 17]
(Blue photosensitive coloring composition (RB-1))
A mixture of the composition and blending amount (parts by weight) shown in Table 2 was stirred and mixed so as to be uniform, and then filtered through a 1.0 μm filter to obtain a blue photosensitive coloring composition (RB-1).

[Evaluation of photosensitive coloring composition for color filter]
Evaluation of the contrast ratio, initial viscosity, time-dependent viscosity, and viscosity stability of the photosensitive coloring compositions obtained in Examples and Comparative Examples was performed in the same manner as the evaluation of the coloring composition for color filters. The results are shown in Table 4.

[Example 18]
(Color filter)
A black matrix is patterned on a glass substrate, and the red photosensitive coloring composition RR-1 is applied to the substrate with a spin coater in a C light source (hereinafter also used for green and blue) x = 0.640, y = 0 The film was applied to a film thickness of about 330 to form a colored film. The film was irradiated with ultraviolet rays of 300 mJ / cm ² through a photomask using an ultrahigh pressure mercury lamp. Next, spray development was performed with an alkaline developer composed of a 0.2% by weight aqueous sodium carbonate solution to remove unexposed portions, followed by washing with ion-exchanged water. Formed. In the same manner, the green photosensitive coloring composition GR-1 is formed to a thickness such that x = 0.300 and y = 0.600, and the blue photosensitive coloring composition BR-1 is used. 150 and y = 0.06 were respectively applied to form a green filter segment and a blue filter segment to obtain a color filter with a high contrast ratio.

[Comparison of Example 1 and Comparative Examples 1-3]
As shown in Table 1, when ultrasonic dispersion was added in the method for producing a red colored composition, and the dispersion and continuous treatment with media were performed, the colored composition of Example 1 not only had a high contrast ratio, but also had a viscosity. Stability was also good. Ultrasonic dispersion treatment can prevent re-aggregation of pigments by loosening the particles that have been atomized by media dispersion, which results in excellent viscosity stability even when dispersion is performed using fine media. (PR-1). Moreover, as shown in Table 4, the photosensitive coloring composition using them also had a high contrast ratio and good viscosity stability (RR-1).

[Comparison of Example 1 and Examples 2-3]
As shown in Table 1, when dispersion was performed by changing the media diameter in the method for producing a red coloring composition, the smaller the media diameter, the better the contrast ratio and the viscosity stability. The result of further improving the quality was obtained by carrying out dispersion using a finer media of 0.01 mmφ (PR-3). Moreover, as shown in Table 4, the photosensitive coloring composition using the coloring composition also achieved high quality (RR-3).

[Comparison of Example 1 and Examples 4 to 5]
As shown in Table 1, when dispersion is performed by changing the frequency of the ultrasonic homogenizer in the method for producing a red coloring composition, when the frequency is in the range of 5 to 20 kHz, sufficient viscosity stability and a high contrast ratio are obtained. The coloring composition (PR-1, PR-4-6) which has was able to be obtained. Moreover, in the balance of both qualities, the ultrasonic treatment at 20 kHz of Example 1 was a particularly preferable result. Moreover, as shown in Table 4, the photosensitive coloring composition using them also had a high contrast ratio and good viscosity stability (RR-1, RR-4 to 6).

  Moreover, as shown in Table 1, also in the manufacturing method of a green coloring composition, a blue coloring composition, and a yellow coloring composition, a red coloring composition is obtained by combining ultrasonic dispersion treatment and dispersion with a medium for continuous treatment. In the same manner as above, the quality having both high contrast ratio and viscosity stability was obtained (PG-1, PB-1, PY-1). The photosensitive coloring compositions using them also had a high contrast ratio and good viscosity stability (RG-1, RB-1, RY-1).

DESCRIPTION OF SYMBOLS 1 Stirring blade motor 2 Stirring blade 3 Colored composition tank 4 Feed pump 5 Ultrasonic device 6 Cooling jacket 7 Raw material particles 8 Beads 9 Cooling jacket 10 Bead separator 11 Vessel 12 Agitator 13 Motor for agitator 14 Disperser 15 Three-way switching Valve 16 Route switching three-way valve

Claims (9)

Dispersion means (a) by ultrasonic vibration energy;
Dispersive means (b) by collision of media energized by rotating rotor blades;
A dispersing apparatus for a color filter coloring composition, wherein the dispersing means (a) and the dispersing means (b) are connected by a series circuit.   2. The coloring composition dispersing device for a color filter according to claim 1, wherein the dispersing means using ultrasonic vibration energy is a means in which the ultrasonic oscillator directly gives energy to the pigment composition.   The dispersion device for a coloring composition for a color filter according to claim 1 or 2, wherein the frequency of the ultrasonic vibration energy is 5 to 200 kHz.   4. The method for producing a colored composition for a color filter according to claim 1, wherein the particle diameter of the medium in the dispersing means (b) is 0.01 to 0.5 mmφ.   5. The dispersing device for a colored composition for a color filter according to claim 1, wherein both the dispersing means (a) and the dispersing means (b) are provided with a cooling device corresponding to heat generation. .   A method for producing a colored composition for a color filter, wherein the colored composition for a color filter is dispersed using the dispersing apparatus according to claim 1.   The coloring composition for color filters manufactured with the manufacturing method of Claim 6.   Furthermore, the coloring composition for color filters of Claim 7 containing a photoinitiator.   A color filter comprising a filter segment formed on the substrate using the coloring composition for a color filter according to claim 7 or 8.

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