CN107043555B - Green pigment dispersion for color filter - Google Patents
Green pigment dispersion for color filter Download PDFInfo
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- CN107043555B CN107043555B CN201611167349.XA CN201611167349A CN107043555B CN 107043555 B CN107043555 B CN 107043555B CN 201611167349 A CN201611167349 A CN 201611167349A CN 107043555 B CN107043555 B CN 107043555B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
- C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
- C09B67/0084—Dispersions of dyes
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
- G02B5/22—Absorbing filters
- G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/105—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having substances, e.g. indicators, for forming visible images
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- General Physics & Mathematics (AREA)
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- Dispersion Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Materials For Photolithography (AREA)
Abstract
In view of the problems of the prior art, an object of the present invention is to provide a green pigment dispersion for a color filter having excellent color characteristics. Specifically, the green pigment dispersion for a color filter contains c.i. pigment green 59 as a pigment in a green pigment dispersion for a color filter containing a pigment, a pigment dispersant and a solvent.
Description
Technical Field
The present invention relates to a green pigment dispersion and a green colored composition which are mainly used for manufacturing an optical color filter of a transmissive or reflective color liquid crystal display.
Background
The color filter is composed of: on the surface of a transparent substrate such as glass, fine stripes (stripes) of 2 or more different colors are arranged in parallel, or fine pixels are arranged in a vertically and horizontally fixed array. The pixel size is as fine as several 10 to several 100 μm, and each hue is arranged in a predetermined order. Therefore, various methods have been proposed for manufacturing color filters.
Since a color filter requires high transparency, it has been conventionally manufactured by a method using a so-called dyeing method: the process is repeated 3 times, adding a photosensitizer such as dichromic acid to an aqueous solution of a natural polymer dyeable with gelatin, casein or the like to make the polymer photosensitive, forming a pixel pattern by photolithography, and then dyeing the pixel pattern into a desired color to obtain a color pattern, thereby finally forming a 3-color transparent colored fine pattern.
In recent years, as color liquid crystal display panels have been increased in size and diversified in use, there has been a demand for improvement in reliability such as heat resistance and light resistance.
In response to this demand, organic pigments having excellent light resistance and heat resistance have been used as color materials for forming color filters, instead of dyes having excellent color characteristics but limited heat resistance or light resistance.
When a color filter is produced using a radiation-sensitive colored resin composition in which an organic pigment is dispersed, the radiation-sensitive colored resin composition in which the organic pigment is dispersed is applied to a transparent substrate or a substrate on which a light-shielding layer of a desired pattern has been formed in advance, and after drying, the dried coating film is exposed to a desired pattern and developed, thereby obtaining pixels of each color.
However, when a radiation-sensitive colored resin composition in which an organic pigment is dispersed is used, for example, in a color filter in which 3 primary colors of blue, green, and red light are arranged on a transparent substrate, it is generally difficult to obtain a spectral spectrum of each color filter because only a single pigment is used, and thus it is necessary to prepare the resin composition using 2 or more pigments.
As described in patent documents 1 to 3, etc., the green color filter is usually adjusted in spectrum and brightness by adding a yellow pigment such as c.i. pigment yellow 139, 17, 128, 150, 155, 185 to a green pigment such as c.i. pigment green 7, 36, 58.
However, the demand for color characteristics of a color filter is increasing by improving the transmittance, i.e., the brightness, and improving the color purity, and only the combination of these pigment types has a limitation in improving the color characteristics as a color filter.
C.i. pigment green 59 is a green pigment having excellent color characteristics, but the production of a pigment dispersion has been technically difficult, and therefore, it has not been put into practical use.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 10-237325
Patent document 2: japanese laid-open patent publication No. 11-14825
Patent document 3: japanese patent laid-open No. 2014-2314
Disclosure of Invention
In view of the problems of the prior art, an object of the present invention is to provide a green pigment dispersion for a color filter having excellent color characteristics.
The present inventors have conducted various studies on a combination of a green pigment and, if necessary, a yellow pigment, and a pigment dispersant for finely dispersing them in order to solve the above-mentioned problems, and as a result, have found that the above-mentioned problems can be solved by combining a green main pigment, a yellow pigment as a toning pigment, and a specific substance as a pigment dispersant for finely dispersing a pigment, and have completed the present invention.
That is, the present invention (1) relates to a green pigment dispersion for a color filter, which is characterized in that a pigment of c.i. pigment green 59 is contained as a pigment in a green pigment dispersion for a color filter containing a pigment, a pigment dispersant and a solvent.
The present invention also relates to (2) the green pigment dispersion for color filters according to item (1), wherein the pigment dispersant contains an acrylic polymer having a tertiary amino group and/or a quaternary ammonium group and having a block-type structure with an amine value of 3mgKOH/g or more.
The present invention also relates to (3) the green pigment dispersion for a color filter according to the item (1) or (2), wherein the pigment contains c.i. pigment yellow 185.
The present invention also relates to (4) the green pigment dispersion for a color filter according to any one of the items (1) to (3), wherein a mass ratio of the green pigment to the yellow pigment is 95/5 to 40/60.
The present invention also relates to (5) the green pigment dispersion for a color filter according to any one of the above (1) to (4), wherein the pigment is a pigment subjected to a microparticulation treatment.
The present invention also relates to (6) the green pigment dispersion for a color filter according to any one of the above (1) to (5), further comprising a sulfonated compound of c.i. pigment yellow 185.
The present invention also relates to a color filter comprising a coating layer formed from the green pigment dispersion for color filters according to the above items (1) to (6).
In the present invention, the amine value represents the mass (mg) of potassium hydroxide equivalent to the amount of hydrochloric acid required to neutralize 1g of the solid content of the resin, and is a value measured by a method based on the method described in japanese industrial standard JIS K7237.
Detailed Description
In the present invention, a green pigment is used as the pigment, and a yellow pigment is preferably used in combination.
As the green pigment, c.i. pigment green 59 (pigment index name) was used as an essential component. By using c.i. pigment green 59, the obtained layer of the green colored composition for a color filter is thin, has high brightness, and can develop color with excellent balance. As the green pigment and/or the yellow pigment of the present invention, other green pigments may be used as long as the light transmittance of c.i. pigment green 59 is not substantially reduced.
When the thickness of the coating film obtained from the green coloring composition for a color filter is 2.55 μm, x is 0.200 to 0.240, preferably 0.210 to 0.230, and more preferably 0.215 to 0.228; y is 0.650 to 0.705, preferably 0.660 to 0.690, and more preferably 0.665 to 0.675; y is 37.0 to 48.0, preferably 38.0 to 48.0.
As the yellow pigment, c.i. pigment yellow 185 (pigment index name) or the like is used. Among these, c.i. pigment yellow 185 is preferable for achieving the object of the present invention, and other yellow pigments may be used in combination as the other yellow pigment within a range in which the light transmittance of c.i. pigment yellow 185 is not substantially reduced.
In the present invention, the blending ratio of the green pigment to the yellow pigment is preferably 95/5 to 40/60 in terms of weight ratio.
In order to obtain high lightness or high contrast, the pigment of the present invention preferably uses a pigment subjected to microparticulation treatment. By performing the microparticulation treatment, the primary particle diameter of the pigment can be made finer and more uniform.
The above-mentioned fine-granulating treatment is preferably carried out by salt milling using a kneader, roll mill, ball mill or the like for a mixture containing an untreated color pigment, a water-soluble inorganic salt (sodium chloride, barium chloride, potassium chloride or the like, preferably sodium chloride, and the average particle diameter of the water-soluble inorganic salt used is preferably 50 μm or less), and a water-soluble dispersion medium (alkoxy alcohols, glycols, ethers or the like) which does not substantially dissolve the water-soluble inorganic salt, the water-soluble inorganic salt and the water-soluble dispersion medium are removed after kneading with a kneading apparatus such as TRI-MIX (trade name) manufactured by Kabushiki Kaisha as a planetary mixer described in JP 2006-192385A and MIRACLE K.C.K. manufactured by Kabushiki Kaisha as a continuous uniaxial kneading machine.
In the present invention, a sulfonated product of c.i. pigment yellow 185 is preferably used in combination. Specifically, there may be mentioned a method of using a sulfonated substance of c.i. pigment yellow 185 in combination in the microparticulation treatment of the yellow pigment, a method of using a sulfonated substance of c.i. pigment yellow 185 in combination in the step of dispersing the yellow pigment which has been microparticulated alone, and the like.
The amount of the sulfonated compound of c.i. pigment yellow 185 used is 0.5 to 30 parts by mass, preferably 3 to 15 parts by mass, per 100 parts by mass of the yellow pigment.
As the pigment dispersant used in the green pigment dispersion for a color filter used in the present invention, an acrylic polymer having a tertiary amino group and/or a quaternary ammonium group and a block-type structure having an amine value of 3mgKOH/g or more is used as an essential component.
Examples of such pigment dispersants include DISPERBYK-2001, DISPERBYK-2000, BYK-LPN6919, BYK-LPN21116 and BYK-LPN22102 (all of BYK-Chemie), and they may be used alone or in combination.
In the pigment composition of the present invention, the amount of the pigment dispersant used is preferably 1 to 100 parts by mass, more preferably 1 to 60 parts by mass, per 100 parts by mass of the pigment. When the content of the pigment dispersant is less than 1 part by mass, the pigment dispersing effect may be reduced, while when it exceeds 100 parts by mass, the developability may be reduced.
In addition to the pigment dispersant, a surfactant may be used in combination as needed. Examples of such surfactants include ionic surfactants and nonionic surfactants, and examples of ionic surfactants include cationic surfactants, anionic surfactants and amphoteric surfactants. Examples of the cationic surfactant include aliphatic amines, quaternary ammonium salts, and alkylpyridinium salts. Examples of the anionic surfactant include fatty acid salts, sulfuric acid esters, sulfonic acid salts, and phosphoric acid esters. Examples of the amphoteric active agent include amino acid salts. Examples of the nonionic surfactant include polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, polyoxyethylene alkyl esters, sorbitan alkyl esters, and polyoxyethylene sorbitan alkyl esters.
The solvent used for the green pigment dispersion for a color filter used in the present invention is preferably a solvent capable of dissolving a pigment dispersant and stably dispersing a pigment.
Specific examples of such solvents include (poly) alkylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, and propylene glycol monoethyl ether; (poly) alkylene glycol monoalkyl ether acetates such as ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, propylene glycol monoethyl ether acetate, and propylene glycol monomethyl ether acetate; ethers such as diethylene glycol diethyl ether, diethylene glycol methyl ethyl ether, and tetrahydrofuran; ketones such as methyl ethyl ketone, methyl isobutyl ketone, cyclohexanone, 2-heptanone, and 3-heptanone; alkyl lactate esters such as methyl 2-hydroxypropionate and ethyl 2-hydroxypropionate; esters such as ethyl 2-hydroxy-2-methylpropionate, 3-methyl-3-methoxybutyl propionate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl ethoxyacetate, glycolic ester, ethyl acetate, n-butyl acetate, isobutyl acetate, n-butyl propionate, methyl acetoacetate, n-pentyl formate, and ethyl pyruvate; aromatic hydrocarbons such as toluene and xylene; amides such as N-methylpyrrolidone, N-dimethylformamide and N, N-dimethylacetamide. These solvents may be used alone or in combination of 2 or more. The amount of the solvent used is preferably 60 to 80 wt% based on the total amount of the pigment dispersion.
The green pigment composition for a color filter of the present invention is obtained by mixing a green pigment, a yellow pigment, a pigment dispersant, a solvent, and the like, and kneading and dispersing the mixture using an ultrasonic disperser, a bead mill, a three-roll mill, a ball mill, a sand mill, a homogenizer, a kneader, and the like.
In the dispersion treatment, the pigment dispersant and/or the solvent may be used in a total amount together with the pigment in the dispersion treatment, or a part of the pigment dispersant may be added after the dispersion treatment.
The green pigment dispersion for a color filter of the present invention is usually mixed with a binder resin, a photopolymerizable compound having 1 or more photopolymerizable unsaturated bonds in the molecule, a photopolymerization initiator, and if necessary, a solvent, and other additives to form a pigment dispersion resist composition, which is used for forming a color filter. In that case, various compounding agents, production methods and the like can be used without particular limitation.
Examples
The present invention will be described more specifically with reference to the following examples, but the present invention is not limited to these examples. In the present example, "parts" and "%" represent "parts by weight" and "% by weight", unless otherwise specified.
< pigments >
D1155(C.I. pigment Yellow 185, product name Paliotol Yellow D1155, manufactured by BASF corporation)
6268EC (C.I. pigment YELLOW 150, tradename CHROMOFINE YELLOW 6268EC, manufactured by Dari refining Co., Ltd.)
L0960HD (C.I. pigment Yellow 138, product name Paliotol Yellow L0960HD, BASF corporation)
Green S (C.I. pigment Green 7, trade name FASTOGEN Green S, DIC Co., Ltd.)
A110(C.I. pigment Green 58, trade name FASTOGEN Green A110, DIC Co., Ltd.)
C100(C.I. pigment Green 59, trade name FASTOGEN Green C100, DIC Co., Ltd.)
< pigment dispersant >
BYK-LPN21116 (acrylic polymer having tertiary amino group and quaternary ammonium group and having a block structure of about 29mgKOH/g amine value, 40% solid content, manufactured by BYK-Chemie Co., Ltd.)
< Binder resin >
BnMA/MAA copolymer (methyl benzyl acrylate/methacrylic acid copolymer, theoretical acid value 120mgKOH/g, mass average molecular weight 25,000)
< solvent >
PGMEA (propylene glycol monomethyl ether acetate)
< photopolymerizable Compound >
DPHA (dipentaerythritol hexaacrylate)
< photopolymerization initiator >
Ir369 (2-benzyl- (dimethylamino) -1- (4-morpholinophenyl) -1-butanone, trade name Yanjiaguo 369, manufactured by BASF corporation)
(D1155 sulfonate)
30ml of concentrated sulfuric acid was put into a 100ml Erlenmeyer flask, and 10g of D1155 was put into the Erlenmeyer flask while stirring the mixture with a magnetic stirrer, and the mixture was stirred at room temperature for 30 minutes. A1L beaker was charged with a mixture of 50g of water and 50g of ice, and the above reaction was poured into the ice water and stirred with a magnetic stirrer for 30 minutes. This was filtered and washed with water under reduced pressure, and the obtained solid was dried to obtain 12g of a D1155 sulfonated product.
(micronized D1155)
100 parts by mass of D1155, 1000 parts by mass of sodium chloride having a particle size of 20 μm and 240 parts by mass of diethylene glycol were put into a pot of a kneader (trade name: KHD-2, manufactured by Kokai Co., Ltd.), and kneaded at 75 ℃ for 10 hours to carry out salt milling. Subsequently, 1300 parts by mass of the resulting kneaded material was put into 3 liters of warm water, and stirred for 1 hour while being heated to 70 ℃. After removing sodium chloride and diethylene glycol by repeated filtration and washing with water, the mixture was dried at 40 ℃ to obtain 95 parts by mass of micronized D1155.
(micronized D1155 (containing sulfonate))
100 parts by mass of D1155, 1000 parts by mass of sodium chloride having a particle diameter of 20 μm, 7 parts by mass of D1155 sulfonate and 240 parts by mass of diethylene glycol were put into a pot of a kneader (trade name: KHD-2, manufactured by Kokai Co., Ltd.), and they were kneaded at 75 ℃ for 10 hours to carry out salt milling. Subsequently, 1300 parts by mass of the resulting kneaded material was put into 3 liters of warm water, and stirred for 1 hour while being heated to 70 ℃. After removing sodium chloride and diethylene glycol by repeated filtration and washing with water, the mixture was dried at 40 ℃ to obtain 98 parts by mass of micronized D1155 (containing a sulfonated substance).
< pigment Dispersion composition for color Filter >
The above-mentioned micronized or non-micronized pigments, pigment dispersants, D1155 sulfonates, binder resins (BnMA/MAA copolymers), and organic solvents (PGMEA) were mixed in the composition shown in Table 1, and kneaded for 6 hours using a paint conditioner (paint conditioner) for zirconia beads having a diameter of 0.2mm to obtain pigment dispersion compositions 1 to 8 for color filters.
TABLE 1
| Pigment dispersion composition for color filter | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| D1155(C.I. pigment yellow 185) | 14.00 | |||||||
| Micronized D1155 | 14.00 | |||||||
| Micronized D1155 (containing sulfonate) | 14.98 | |||||||
| 6268EC (C.I. pigment yellow 150) | 14.00 | |||||||
| L0960HD (C.I. pigment yellow 138) | 14.00 | |||||||
| Green S (C.I. pigment Green 7) | 14.00 | |||||||
| A110(C.I. pigment green 58) | 14.00 | |||||||
| C100(C.I. pigment Green 59) | 14.00 | |||||||
| BYK-LPN21116 (solid content 40%) | 5.60 | 5.60 | 5.60 | 5.60 | 5.60 | 7.00 | 7.00 | 7.00 |
| D1155 sulfonate | 0.98 | 0.98 | ||||||
| BnMA/MAA copolymer | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 | 4.20 |
| PGMEA | 75.22 | 75.22 | 75.22 | 76.20 | 76.20 | 74.80 | 74.80 | 74.80 |
| Total up to | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
< pigment Dispersion resist composition for color Filter >
Next, the color filter pigment dispersion compositions 1 to 8 were uniformly mixed with the BnMA/MAA copolymer, DPHA, Ir369 and PGMEA to have the compositions shown in Table 2 using a high-speed mixer, and then filtered through a membrane filter having a pore diameter of 3 μm, to obtain color filter pigment dispersion resist compositions 1 to 8.
TABLE 2
| Pigment dispersion corrosion-resisting agent composition for color filter | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Pigment dispersion composition 1 for color filter | 57.14 | |||||||
| Pigment dispersion composition 2 for color filter | 57.14 | |||||||
| Pigment dispersion composition 3 for color filter | 57.14 | |||||||
| Pigment dispersion composition 4 for color filter | 57.14 | |||||||
| Pigment dispersion composition for color filter 5 | 57.14 | |||||||
| Pigment dispersion composition for color filter 6 | 57.14 | |||||||
| Pigment dispersion composition 7 for color filter | 57.14 | |||||||
| Pigment dispersion composition 8 for color filter | 57.14 | |||||||
| BnMA/MAA copolymer | 4.66 | 4.66 | 4.66 | 5.02 | 5.02 | 4.51 | 4.51 | 4.51 |
| DPHA | 3.03 | 3.03 | 3.03 | 3.18 | 3.18 | 2.96 | 2.96 | 2.96 |
| Ir369 | 1.01 | 1.01 | 1.01 | 1.06 | 1.06 | 0.99 | 0.99 | 0.99 |
| PGMEA | 34.16 | 34.16 | 34.16 | 33.60 | 33.60 | 34.40 | 34.40 | 34.40 |
| Total up to | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 | 100.00 |
< Green pigment Dispersion resist compositions for color Filter of examples 1 to 2 and comparative examples 1 to 10 >
Compositions selected from the green pigment dispersion resist compositions 1 to 8 for color filters were uniformly mixed in the pigment ratios shown in Table 3 to obtain green pigment dispersion resist compositions for color filters of examples 1 to 2 and comparative examples 1 to 10.
TABLE 3
(evaluation)
< evaluation of color characteristics of Green pigment Dispersion resist composition for color Filter >
The green pigment dispersion resist compositions for color filters of examples 1 to 2 and comparative examples 1 to 10 were coated on a glass substrate by a spin coater. Then, the substrate was prebaked at 100 ℃ for 3 minutes, exposed to light using a high-pressure mercury lamp, and postbaked at 230 ℃ for 30 minutes. Then, the color characteristics (x, Y, Y) of the resists of examples 1 to 2 and comparative examples 1 to 10 were measured by a spectrophotometer (UV-2500 PC, manufactured by Shimadzu corporation, C light source 2 ℃ visual field). In examples 1 to 2 and comparative examples 1 to 10, the film thickness and lightness Y were determined at a chromaticity x of 0.224 and a chromaticity Y of 0.669.
From examples 1 to 2 according to the examples of the present invention, it is understood that the green pigment resist composition Y for a color filter has a high value and a small film thickness, and thus has suitable optical properties as a color filter.
On the other hand, according to comparative examples 1 to 10 in which other pigments were used instead of c.i. pigment green 59, even though the values of x and Y were the same as in examples, the value of Y was low, and thus it could not be suitably used as a color filter.
As is clear from table 3, the green pigment dispersion for color filters, which used c.i. pigment green 59 as the green pigment, had very high lightness even when the film thickness was small.
Claims (6)
1. A green pigment dispersion for a color filter, characterized in that the green pigment dispersion for a color filter contains a pigment, a pigment dispersant and a solvent, wherein the pigment contains C.I. pigment green 59, and the green pigment dispersion for a color filter further contains a sulfonated compound of C.I. pigment yellow 185.
2. The green pigment dispersion for color filters according to claim 1, wherein the pigment dispersant comprises an acrylic polymer having a tertiary amino group and/or a quaternary ammonium group and having a block-type structure with an amine value of 3mgKOH/g or more.
3. The green pigment dispersion for color filters according to claim 1 or 2, wherein the pigment contains c.i. pigment yellow 185.
4. The green pigment dispersion for color filters according to any one of claims 1 to 3, wherein the mass ratio of the green pigment to the yellow pigment is 95/5 to 40/60.
5. The green pigment dispersion for color filters according to any one of claims 1 to 4, wherein the pigment is a micronized pigment.
6. A color filter comprising a coating layer formed from the green pigment dispersion for color filters according to any one of claims 1 to 5.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016021259A JP6645859B2 (en) | 2016-02-05 | 2016-02-05 | Green pigment dispersion for color filters |
| JP2016-021259 | 2016-02-05 |
Publications (2)
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| KR102371945B1 (en) * | 2017-11-03 | 2022-03-08 | 동우 화인켐 주식회사 | Colored Photosensitive Resin Composition, Color Filter and Display Device |
| JP7429850B2 (en) * | 2019-04-25 | 2024-02-09 | ａｒｔｉｅｎｃｅ株式会社 | Coloring composition, photosensitive coloring composition, color filter, and liquid crystal display device using them |
| CN113881244B (en) * | 2020-07-03 | 2023-08-22 | 山东凯瑞尔光电科技有限公司 | Green pigment synergist for color photoresist, preparation method and application thereof |
| CN114958031A (en) * | 2022-06-30 | 2022-08-30 | 山东凯瑞尔光电科技有限公司 | Post-treatment method for yellow pigment kneading process of photoresist |
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| WO2010140519A1 (en) * | 2009-06-05 | 2010-12-09 | 大日精化工業株式会社 | Green pigment, process for production of same, coloring matter containing same, and method for coloring using same |
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| JP4038845B2 (en) | 1997-04-28 | 2008-01-30 | 住友化学株式会社 | Green composition for color filter and color filter |
| JP2012172003A (en) * | 2011-02-18 | 2012-09-10 | Fujifilm Corp | Method for producing colored composition, colored composition, color filter, liquid crystal display and organic el display |
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| JP6578252B2 (en) * | 2015-07-01 | 2019-09-18 | 株式会社Ｄｎｐファインケミカル | Color material dispersion for color filter, photosensitive colored resin composition for color filter, color filter, and display device |
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| JP6704337B2 (en) * | 2015-12-28 | 2020-06-03 | 住友化学株式会社 | Colored photosensitive resin composition, color filter and display device including the same |
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| WO2010140519A1 (en) * | 2009-06-05 | 2010-12-09 | 大日精化工業株式会社 | Green pigment, process for production of same, coloring matter containing same, and method for coloring using same |
| CN103513513A (en) * | 2012-06-20 | 2014-01-15 | 阪田油墨股份有限公司 | A green colored composition for a color filter |
| CN104932199A (en) * | 2014-03-18 | 2015-09-23 | Jsr株式会社 | Radiation-sensitive composition, cured film, display device and colorants dispersion |
| CN107003448A (en) * | 2014-12-24 | 2017-08-01 | Dnp精细化工股份有限公司 | Color material dispersion liquid, photosensitive color resin combination, colored filter, liquid crystal display and oganic light-emitting display device |
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| JP2017138561A (en) | 2017-08-10 |
| CN107043555A (en) | 2017-08-15 |
| TWI710605B (en) | 2020-11-21 |
| KR20170093692A (en) | 2017-08-16 |
| JP6645859B2 (en) | 2020-02-14 |
| KR102664035B1 (en) | 2024-05-07 |
| TW201739845A (en) | 2017-11-16 |
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