WO2018186181A1 - Light-shielding pigment composition, and light-shielding member for display - Google Patents

Light-shielding pigment composition, and light-shielding member for display Download PDF

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Publication number
WO2018186181A1
WO2018186181A1 PCT/JP2018/011310 JP2018011310W WO2018186181A1 WO 2018186181 A1 WO2018186181 A1 WO 2018186181A1 JP 2018011310 W JP2018011310 W JP 2018011310W WO 2018186181 A1 WO2018186181 A1 WO 2018186181A1
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Prior art keywords
light
pigment
parts
shielding
substituent
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PCT/JP2018/011310
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French (fr)
Japanese (ja)
Inventor
一司 鈴木
尊男 荻原
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Dic株式会社
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Priority to KR1020187034194A priority Critical patent/KR102425173B1/en
Priority to JP2018536311A priority patent/JP6424991B1/en
Publication of WO2018186181A1 publication Critical patent/WO2018186181A1/en

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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D17/00Pigment pastes, e.g. for mixing in paints
    • C09D17/003Pigment pastes, e.g. for mixing in paints containing an organic pigment
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing 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
    • C09B67/0033Blends of pigments; Mixtured crystals; Solid solutions
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D17/00Pigment pastes, e.g. for mixing in paints
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/20Filters
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors

Definitions

  • the present invention relates to a light-shielding pigment composition capable of realizing a high optical density and a light-shielding member for a display using the light-shielding pigment composition.
  • a liquid crystal panel in which a color filter on array (COA) in which a color filter substrate and a TFT (Thin Film Transistor) array substrate are integrated is attracting attention.
  • COA color filter on array
  • TFT Thin Film Transistor
  • Such a resin black matrix for COA is required to have a thick film because it requires a high light shielding property.
  • the difference in crosslink density in the film thickness direction at the exposed portion increases, so that high sensitivity can be achieved and a black pattern with a good shape can be obtained.
  • the conventionally known blue pigment has a small absorption intensity near 555 nm, which greatly contributes to the OD value representing the light shielding property (the numerical value representing the optical density and the light shielding performance, indicating that the larger the numerical value is, the higher the light shielding performance).
  • the absorption intensity at 365 nm used for curing the ultraviolet curable resin is large, when it is black combined with the short wavelength region absorption pigment and the medium wavelength region absorption pigment, the light shielding is insufficient and the exposure sensitivity is reduced. There was a problem. Under such circumstances, a blue pigment having a large absorption intensity at 555 nm and a small absorption intensity at 365 nm, which greatly contributes to the optical density, has been demanded.
  • the problem to be solved by the present invention is to provide a light-shielding pigment composition having high optical density and high exposure sensitivity. Moreover, it is providing the light-shielding member for a display containing this light-shielding pigment composition.
  • the present inventors paid attention to a blue pigment that has a great influence on the performance of a light-shielding composition containing a plurality of organic pigments. While many blue pigments are known, the present inventors have found that the above problems can be solved by using a specific organic pigment described later as a blue pigment, and have completed the present invention. That is, the present invention is a light-shielding pigment composition containing two or more organic pigments, As an organic pigment, at least the following general formula (1):
  • R 1 to R 6 each independently represents a hydrogen atom, a halogen atom, a nitro group, an alkoxy group which may have a substituent, an amino group which may have a substituent, or a substituent.
  • a light-shielding pigment composition comprising an organic pigment (A).
  • the organic pigment (A) is C.I. I. It is related with the light-shielding pigment composition characterized by being the pigment 25 or 26.
  • the organic pigment (A) has a maximum absorbance in the following conditions (condition: visible light region (380 nm to 780 nm) at a wavelength of 580 nm to 780 nm, and the absorbance at 365 nm is 50, which is the maximum absorbance. % Or less, the absorbance at 555 nm and 700 nm is 50% or more of the maximum absorbance.) And a light-shielding pigment composition characterized by being an organic pigment (A).
  • the light-shielding pigment composition of the present invention further comprises a benzimidazolone pigment having a chemical structure represented by the following general formula (2) and general formula (3)
  • the present invention relates to a light-shielding pigment composition comprising one or both of benzimidazolone dioxazine pigments having a chemical structure represented by (4).
  • R 1 to R 3 each represent a hydrogen atom, a halogen atom or a monovalent hydrocarbon group which may have a substituent.
  • X 1 , X 2 , X 3 , X 4 , X 5 and X 6 each independently represent a hydrogen atom or a halogen atom; one or more of X 3 , X 4 , X 5 and X 6 Is a halogen atom; R 1 , R 2 , R 3 and R 4 each independently represents a hydrogen atom or a monovalent hydrocarbon group which may have a substituent)
  • the present invention relates to a light-shielding member for display containing the light-shielding pigment composition of the present invention.
  • the light-shielding pigment composition of the present invention has a high optical density and high exposure sensitivity, it can be suitably used as a light-shielding member for displays.
  • the light-shielding pigment composition of the present invention contains a specific organic pigment (the organic pigment (A)) as an essential component, and further uses a black, light-shielding light by using organic pigments such as orange, yellow, purple, and red together. Constituting a functional pigment composition.
  • the light-shielding member for display containing such a light-shielding pigment composition of the present invention has excellent performance such as high optical density and high exposure sensitivity.
  • the organic pigment (A) has the following general formula (1):
  • R 1 to R 6 each have a hydrogen atom, a halogen atom, a nitro group, an alkoxy group which may have a substituent, an amino group which may have a substituent, or a substituent.
  • Such an organic pigment is a blue pigment having a large absorption intensity at 555 nm and a small absorption intensity at 365 nm, which greatly contributes to the optical density, and obtains an excellent optical density when used as a light-shielding composition.
  • the halogen atom represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom
  • the alkyl part of the alkoxy group may be one having 1 to 6 carbon atoms.
  • C.I. I. Pigment Blue 25 also referred to as PB25
  • PB25 and PB26 are both organic pigments that have been known for a long time, but their use has been limited to use as a colorant (use that expects blue coloration).
  • UV rays are frequently used for curing UV curable resins.
  • Ultraviolet light refers to light having a wavelength of 100 nm to 400 nm, and the shorter the wavelength, the greater the energy.
  • the wavelength is 200 nm or less, energy is consumed for oxygen decomposition or is easily absorbed by oxygen. Therefore, light sources of 254 nm and 365 nm are mainly used for ultraviolet curing.
  • the high-pressure mercury lamp that emits 365 nm light has the same length as the low-pressure mercury lamp that emits 254 nm light and can have a wattage of 20 times. Therefore, a high-pressure mercury lamp that emits 365 nm ultraviolet light for ultraviolet curing. It is desirable to use
  • the OD value serving as a light-shielding index can be obtained from the following formula according to JIS Z 8701.
  • Y Brightness (brightness)
  • k constant
  • T transmittance
  • S light source intensity
  • y color matching function (sensitivity of the human eye)
  • the color matching function y can use the one described in JIS Z 8701
  • the light source intensity S can use the C light source (the auxiliary illuminant C for colorimetry) described in JIS Z 8720.
  • the light absorption intensity at 555 nm where the constant for calculating the y ⁇ C light source intensity at each wavelength is the maximum value contributes greatly to the OD value, the light absorption intensity at 555 nm is used as a simple light-blocking index. be able to.
  • JIS Z 8722 a method for measuring a range of 400 nm to 700 nm with a second type spectrophotometer is mentioned as a color measuring method.
  • 700 nm is close to the limit where human eyes can perceive a color, and light having a wavelength longer than 700 nm contributes very little to the apparent color and OD value.
  • the apparent blackness can be increased by having uniform absorption at 400 nm to 700 nm. Therefore, in order to obtain a desired appearance blackness as a black light-shielding composition and a high OD value, it is desirable that a pigment having absorption in a long wavelength region used for mixing has a high absorbance at 700 nm.
  • organic pigments (A) it is preferable to select an organic pigment satisfying the following conditions from the viewpoint of obtaining an excellent optical density. Conditions: Absorbance in the visible light region (380 nm to 780 nm) is maximum at a wavelength of 580 nm to 780 nm, absorbance at 365 nm is 50% or less of the maximum absorbance, and absorbances at 555 nm and 700 nm are 50% or more of the maximum absorbance.
  • Whether or not the above conditions are satisfied is determined by dispersing the target organic pigment in PMA (propylene glycol monomethyl ether acetate), diluting the dispersion with PMA, and then using a spectrophotometer (U3900, Hitachi High-Tech Science Corporation). The absorption spectrum is measured and the peak top position, the maximum absorbance, the absorbance at 365 nm, the absorbance at 555 nm, and the absorbance at 700 nm can be easily identified.
  • PMA propylene glycol monomethyl ether acetate
  • the organic pigment represented by the formula (1) may be used as it is, but in order to satisfy the above conditions, the adjustment of the average primary particle diameter, the crystal structure The above-mentioned conditions can be satisfied and used by adjustment, adjustment of dispersibility in a solvent, and the like.
  • the organic pigment represented by the above formula (1) when used as the organic pigment (A), the organic pigment preferably has an average primary particle diameter in the range of 30 nm to 190 nm by a small angle X-ray scattering method. More preferably, it is in the range of 50 nm to 160 nm. By adjusting the average primary particle diameter within such a range, the absorbance at 555 nm and 700 nm can be increased, and the optical density can be further increased.
  • the light-shielding pigment composition of the present invention includes conventional copper phthalocyanine and C.I. I. Compared to the case where CI Pigment Blue 60 is used as the blue pigment in the mixed color organic pigment, it is possible to obtain a light-shielding member for a display which is remarkably excellent in optical density and exposure sensitivity as shown in Examples (Table 2) described later. it can.
  • the display is a device that displays a video signal of a still image or a moving image output from a device such as a computer or a television. Also called a monitor, there are a plasma display (PDP), a liquid crystal display (LCD), an EL display (ELD), a field emission display (FED), a crystal LED display (CLED), and the like.
  • PDP plasma display
  • LCD liquid crystal display
  • ELD EL display
  • FED field emission display
  • CLED crystal LED display
  • the light-shielding member for display of the present invention is a material for shielding light emission from a light-emitting member such as a visible light region or a backlight in a display.
  • a light-emitting member such as a visible light region or a backlight in a display.
  • a black matrix there are a black matrix, a TFT light shielding film, a black mask, a black seal, a black column spacer, an electric field limiting layer in ELD, and the like.
  • other organic pigments, inorganic pigments, dyes and other colorants may be mixed so as not to impair the balance of transparency in the visible region.
  • colorants to be mixed include azo pigments, condensed azo pigments, azomethine pigments, phthalocyanine pigments, quinacridone pigments, isoindolinone pigments, isoindoline pigments, dioxazine pigments, selenium pigments, perylene pigments, perinone pigments, quinophthalone pigments, diketo.
  • Insulating organic pigments such as pyrrolopyrrole pigments, thioindigo pigments, benzimidazolone pigments, and indanthrene pigments are preferred, and particularly contain at least one organic pigment selected from yellow, orange, red, and purple. It is advantageous.
  • a combination of blue and orange, a combination of blue, orange and purple, a combination of blue, yellow and purple, a combination of blue, yellow and red and the like can be mentioned.
  • two or more blue pigments may be used, for example, similar colors may be combined, or other color pigments may be further combined with similar color combinations.
  • a blue pigment other than the organic pigment (A) may be used in combination, or a plurality of pigments corresponding to the organic pigment (A) may be used.
  • the organic pigment used and the combination thereof may be obtained as long as the blackness required for the target black matrix or the like is obtained. For example, subtracting the three primary colors of blue, yellow, and red into black by subtractive color belongs to the technical common sense of those skilled in the art, and the mixing ratio thereof is not particularly limited. Examples of each color pigment are shown below.
  • blue pigments that may be added include C.I. I. Pigment Blue 1, 1: 2, 9, 14, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 17, 19, 27, 28, 29, 33, 35, 36, 56, 56: 1, 61, 61: 1, 62, 63, 66, 67, 68, 71, 72, 73, 74, 75, 76, 78, 79, 80 and the like.
  • yellow pigments examples include C.I. I. Pigment Yellow 1, 1: 1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 14, 16, 17, 24, 31, 32, 34, 35, 35: 1, 36, 36: 1, 37, 37: 1, 40, 41, 42, 43, 48, 53, 55, 61, 62, 62: 1, 63, 65, 73, 74, 75, 81, 83, 87, 93, 94, 95, 97, 100, 101, 104, 105, 108, 109, 110, 111, 116, 117, 119, 120, 126, 127, 127: 1, 128, 129, 130, 133, 134, 136, 138, 139, 142, 147, 148, 150, 151, 153, 154, 155, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 17 , 173, 174, 175, 176, 180, 181, 182, 183
  • orange pigments examples include C.I. I. Pigment Orange 1, 2, 5, 13, 16, 17, 19, 20, 21, 22, 23, 24, 34, 36, 38, 39, 43, 46, 48, 49, 61, 62, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 81, and the like. Of these, C.I. I. Pigment orange 36, 38, 60, 62, 64, 72.
  • brown pigments examples include C.I. I. And CI Pigment Brown 23, 25, and 41.
  • red pigments examples include C.I. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 14, 15, 16, 17, 21, 22, 23, 31, 32, 37, 38, 41, 47, 48, 48: 1, 48: 2, 48: 3, 48: 4, 49, 49: 1, 49: 2, 50: 1, 52: 1, 52: 2, 53, 53: 1, 53: 2, 53: 3, 57, 57: 1, 57: 2, 58: 4, 60, 63, 63: 1, 63: 2, 64, 64: 1, 68, 69, 81, 81: 1, 81: 2, 81: 3, 81: 4, 83, 88, 90: 1, 101, 101: 1, 104, 108, 108: 1, 109, 112, 113, 114, 122, 123, 144, 146, 147, 149, 151, 166, 168, 169, 170, 172, 173, 174, 175, 176, 177, 178, 17 , 181, 185, 187, 188, 190, 193, 194, 200
  • C.I. I. Pigment Red 48 1, 122, 168, 177, 202, 206, 207, 209, 224, 242, 254, and more preferably C.I. I. Pigment red 177, 209, 224, 254.
  • purple pigments examples include C.I. I. Pigment Violet 1, 1: 1, 2, 2: 2, 3, 3: 1, 3: 3, 5, 5: 1, 14, 15, 16, 19, 23, 25, 27, 29, 31, 32, 37, 39, 42, 44, 47, 49, 50 and the like. Of these, C.I. I. Pigment violet 19, 23, 29, and more preferably C.I. I. And CI Pigment Violet 23.
  • green pigments examples include C.I. I. Pigment green 1, 2, 4, 7, 8, 10, 13, 14, 15, 17, 18, 19, 26, 36, 45, 48, 50, 51, 54, 55, 58, 59. . Of these, C.I. I. And CI Pigment Green 7 and 36.
  • a benz having a chemical structure represented by the following general formula (2) and general formula (3) from the viewpoint of obtaining a more suitable light-shielding property It is preferable to use one or both of an imidazolone pigment and a benzimidazolone dioxazine pigment having a chemical structure represented by the following general formula (4).
  • R 1 to R 3 each represent a hydrogen atom, a halogen atom or a monovalent hydrocarbon group which may have a substituent.
  • X 1 , X 2 , X 3 , X 4 , X 5 and X 6 each independently represent a hydrogen atom or a halogen atom; one or more of X 3 , X 4 , X 5 and X 6 Is a halogen atom; R 1 , R 2 , R 3 and R 4 each independently represents a hydrogen atom or a monovalent hydrocarbon group which may have a substituent)
  • the compound of the above formula (4) is not particularly limited and can be produced by appropriately using a conventionally known method. Hereinafter, an embodiment of a method for producing the compound of the above formula (4) will be described.
  • the compound of the above formula (4) can be produced, for example, by synthesizing a compound of the formula (V) described later by the method described in JP-A No. 11-335575 and halogenating it by a halogenation reaction described later. Can do. Details are given below.
  • a base such as sodium acetate, sodium hydrogen carbonate, triethylamine and the like
  • the mixture is stirred under reflux for 1 to 10 hours, then the solid product is filtered off while hot and washed with a solvent such as ethanol, dimethylacetamide, etc. at 60 ° C. to 100 ° C. and then with boiling water. .
  • the product is suspended in a solvent such as dimethylformamide, dimethylacetamide, and the suspension is heated at 80 ° C. to 150 ° C. for 1 hour to 10 hours and filtered while hot. It is washed with a solvent such as ethanol and dimethylacetamide at 100 ° C., then with boiling water and dried at 90 ° C. to 120 ° C.
  • X 1 and X 2 each independently represent a hydrogen atom or a halogen atom
  • X 7 and X 8 each independently represent a leaving group such as a halogen atom or an alkoxy group.
  • R 1 and R 2 each independently represent a hydrogen atom or a monovalent hydrocarbon group which may have a substituent.
  • R 3 and R 4 each independently represent a hydrogen atom or a monovalent hydrocarbon group which may have a substituent.
  • X 1 and X 2 each independently represent a hydrogen atom or a halogen atom; R 1 , R 2 , R 3 and R 4 each independently have a hydrogen atom or a substituent. A good monovalent hydrocarbon group.
  • ⁇ Halogen addition reaction 1 to 32 moles of a halogenating reagent such as bromine, N-bromosuccinimide, trichloroisocyanuric acid, N-iodosuccinimide and the like are added to concentrated sulfuric acid having a temperature of 10 ° C. or less, and then the above formula (V 1 mol of the compound represented by) is added and stirred at room temperature for 2 to 48 hours. This is then poured onto ice and the resulting precipitate is filtered, washed with water until no acid is detected, then washed with ethanol, dried at 90 ° C. to 120 ° C., and the benzene ring is 1 to 6 halogen atoms.
  • a halogenating reagent such as bromine, N-bromosuccinimide, trichloroisocyanuric acid, N-iodosuccinimide and the like are added to concentrated sulfuric acid having a temperature of 10 ° C. or less, and
  • the obtained mixture is separated by silica gel column chromatography, each solution having a single compound is concentrated, and a solvent such as N, N-dimethylacetamide and an acid such as toluene-4-sulfonic acid monohydrate are concentrated. And stirred at 100 ° C. to 200 ° C. for 2 to 24 hours to obtain a precipitate. The precipitate is filtered, washed with a solvent such as N, N-dimethylacetamide, and dried at 90 to 120 ° C. to obtain the compound of the above formula (4).
  • each organic pigment may be pulverized individually and mixed in accordance with the specifications of the light-shielding member for display.
  • the method for refining the pigment can be performed by a publicly known method and is not particularly limited.
  • a solvent salt milling method a sulfuric acid dissolution method, a dry grinding method, a pigmentation method by normal pressure and pressurization with an organic solvent and water, or a combination of these methods can be employed.
  • An organic dye derivative may be mixed with the composition of the present invention, and the organic dye derivative has any chemical structure as long as it has a sulfonic acid group, a phthalimide group, or is an organic dye derivative that is a sulfonate. Also good. Organic pigment derivatives having sulfonic acid groups, phthalimide groups, or sulfonates are often added to improve the dispersibility of organic pigments in binders and solvent systems, and their effects are well known. . The number of substituents of the sulfonic acid group is 1 to 4 per molecule, preferably 1 to 2. Since the pigment composition of the present invention is black, any organic dye derivative can be used.
  • azo structure there are an azo structure, a benzimidazolone structure, a quinacridone structure, a diketopyrrolopyrrole structure, a phthalocyanine structure, a dioxazine violet structure, and among them, copper phthalocyanine sulfonic acid or a salt thereof, phthalimidomethyl copper phthalocyanine Quinacridonesulfonic acid or a salt thereof, phthalimidomethylquinacridone.
  • the metal that forms a salt with the sulfonic acid is a monovalent or divalent metal such as Ca, Na, K, Mg, Fe, Co, Ni, Cu, and Zn.
  • salts other than metal salts include organic amine salts such as aliphatic amines (NHR 2 , NH 2 R, [NR 4 ] + (R: alkyl group having 1 to 20 carbon atoms)).
  • Organic pigment derivative is contained in the range of 1 to 20 parts per 100 parts of organic pigment. Considering hue and productivity, it is preferably contained in the range of 1 to 15 parts.
  • the timing of adding the organic pigment derivative may be added in the step of refining the organic pigment carried out in the present invention, or may be added after washing and refining the organic pigment after the step of refining. . However, in consideration of imparting a dispersibility effect by an organic dye derivative having a sulfonic acid group or a salt thereof, it is preferable to treat the organic pigment after being refined.
  • the organic pigment derivative is treated by dyeing with a solid or alkali and adsorbing it on the surface of the organic pigment in an acidic state.
  • a solid it is added to a wet cake containing a refined organic pigment and a solvent such as water.
  • Dyeing of organic pigment derivatives with alkali is usually carried out at pH 8-12, then mixed with finely divided organic pigment in a slurry, and then the inside of the system is adjusted to acidity, usually pH 3-5, on the surface of the organic pigment.
  • An organic pigment derivative is precipitated.
  • a colored composition is prepared from the pigment composition of the present invention and, if necessary, a resin dispersant and an organic solvent.
  • a colored composition in which each color organic pigment, organic solvent and dispersant are dispersed may be mixed separately, or all organic pigments may be dispersed with the organic solvent and dispersant at once. good.
  • a resin-based dispersant When dispersing these pigment compositions in an organic solvent, a resin-based dispersant is used in combination for improving dispersibility and dispersion stability.
  • This resin-based dispersant has a function of binding the organic pigment and the anchor site, and the compatible part extends into the dispersion medium to form a dispersion.
  • An alkali used for the preparation of the photosensitive composition described later is used.
  • the soluble resin and the photopolymerizable monomer are different types.
  • the resin dispersant examples include those having a polymer chain, such as polyurethane resin, polyethyleneimine, polyoxyethylene glycol diester, acrylic resin, polyester resin, and the like.
  • polyester resin dispersants and / or acrylic resin dispersants are preferable in terms of dispersibility, heat resistance, and light resistance.
  • resinous dispersants include trade names, Ajisper (manufactured by Ajinomoto Fine Techno Co., Ltd.), EFKA (manufactured by BASF Corp.), DISPERBYK (manufactured by Big Chemie Corp.), Disparon (manufactured by Enomoto Kasei Co., Ltd.), SOLPERSE (Lubrisol) Company-made), KP (manufactured by Shin-Etsu Chemical Co., Ltd.), polyflow (manufactured by Kyoeisha Chemical Co., Ltd.) and the like.
  • 1 type may be used for these dispersing agents, and 2 or more types can be used together by arbitrary combinations and a ratio.
  • the resin-based dispersant is usually 30 to 60 parts, preferably 38 to 50 parts, per 100 parts in terms of the total mass of the organic pigments of each color.
  • organic solvent used here examples include diisopropyl ether, mineral spirit, n-pentane, amyl ether, ethyl caprylate, n-hexane, diethyl ether, isoprene, ethyl isobutyl ether, butyl stearate, n-octane, and valsol.
  • Apco # 18 solvent diisobutylene, amyl acetate, butyl acetate, apcocinner, butyl ether, diisobutyl ketone, methylcyclohexene, methyl nonyl ketone, propyl ether, dodecane, soak solvent no. 1 and no.
  • At least n-amyl methyl ketone (2-heptanone) is preferably used as the organic solvent contained in the coloring composition.
  • one organic solvent may be used alone, or two or more organic solvents may be used in any combination and ratio.
  • the organic solvent is preferably used in an amount of usually 300 to 800 parts, preferably 400 to 600 parts, per 100 parts in terms of the total mass of the organic pigments of each color.
  • various pigment derivatives can be used in combination as required.
  • the substituent of the pigment derivative include a sulfonic acid group, a sulfonamide group and a quaternary salt thereof, a phthalimidomethyl group, a dialkylaminoalkyl group, a hydroxyl group, a carboxyl group, and an amide group directly on the pigment skeleton or an alkyl group and an aryl group. And those bonded via a heterocyclic group or the like.
  • the coloring composition can be prepared by stirring and mixing the organic pigment composition of each color described above, the resin dispersant, and the organic solvent. If necessary, it can also be prepared by shaking and dispersing the mixture over a required time in the presence of various grinding media such as beads and rods, and removing the media by filtration or the like.
  • the coloring composition requires a black matrix or black mask of a color filter, which is a component of a display, a column spacer or black seal of a liquid crystal layer, a TFT light shielding film, an electric field limiting layer in an ELD, or other light shielding by a conventionally known method. It can be used for the member.
  • a typical production method of a color filter is a photolithography method, and a black matrix is prepared by applying a photosensitive composition described later prepared from the coloring composition of the present invention onto a transparent substrate for a color filter and heating. After drying (pre-baking), pattern exposure is performed by irradiating ultraviolet rays through a photomask to cure the photo-curable compound at the location corresponding to the black matrix portion, and then developing the unexposed portion with a developer. The non-pixel portion is removed and the pixel portion is fixed to the transparent substrate. By this method, a black matrix portion made of a cured colored film of the photosensitive composition is formed on the transparent substrate.
  • Each of the RGB pixel portions can also be prepared in the same manner as described above from a photosensitive composition prepared from each color organic pigment having a larger specific surface area.
  • Examples of a method for applying a photosensitive composition described later on a transparent substrate such as glass include a spin coating method, a roll coating method, a slit coating method, and an inkjet method.
  • the drying condition of the coating film of the photosensitive composition applied to the transparent substrate is usually about 50 to 150 ° C. for about 1 to 15 minutes, although it depends on the kind of each component, the blending ratio, and the like. This heat treatment is generally referred to as “pre-baking”.
  • pre-baking This heat treatment is generally referred to as “pre-baking”.
  • light used for photocuring the photosensitive composition it is preferable to use ultraviolet rays or visible light having a wavelength range of 200 to 500 nm. Various light sources that emit light in this wavelength range can be used.
  • Examples of the developing method include a liquid filling method, a dipping method, and a spray method.
  • the transparent substrate on which the black matrix or the pixel portion of the necessary color is formed is washed with water and dried.
  • the color filter thus obtained is subjected to a heat treatment (post-baking) at 100 to 280 ° C. for a predetermined time with a heating device such as a hot plate or an oven to remove volatile components in the colored coating film, and at the same time,
  • the unreacted photocurable compound remaining in the cured colored film of the curable composition is thermally cured to complete the color filter.
  • the photosensitive composition for forming the black matrix part of the color filter has the coloring composition of the present invention, an alkali-soluble resin, a photopolymerizable monomer, and a photopolymerization initiator as essential components, and these are mixed. Can be prepared.
  • the colored resin film forming the black matrix portion is required toughness that can withstand baking performed in the actual production of the color filter, only the photopolymerizable monomer is used in preparing the photosensitive composition. In addition, it is essential to use this alkali-soluble resin together. When an alkali-soluble resin is used in combination, it is preferable to use an organic solvent that dissolves it.
  • the colored composition of the present invention is prepared in advance, and then an alkali-soluble resin, a photopolymerizable monomer, and a photopolymerization initiator are added to the photosensitive composition.
  • the method of making a product is common.
  • alkali-soluble resin used in the preparation of the photosensitive composition examples include a resin containing a carboxyl group or an acidic hydroxyl group, such as a novolak-type phenol resin, a (meth) acrylic acid alkyl ester- (meth) acrylic acid copolymer, Examples thereof include styrene- (meth) acrylic acid copolymers and styrene-maleic acid copolymers.
  • description with (meth) acryl is a general term which combined acrylic and methacryl.
  • an alkali-soluble resin containing polymerized units of an imide structure, styrene, and (meth) acrylic acid is preferable to use.
  • This alkali-soluble resin does not have the function of binding the organic pigment and the anchor part and having the compatible part extend into the dispersion medium to constitute the dispersion, but on the other hand, it is in contact with the alkali. This is used exclusively for the purpose of removing unexposed portions of the photosensitive composition, taking advantage of the characteristics of dissolution.
  • photopolymerizable monomer examples include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, bis [( (Meth) acryloxyethoxy] bisphenol A, bifunctional monomers such as 3-methylpentanediol di (meth) acrylate, trimethylol propaton tri (meth) acrylate, pentaerythritol tri (meth) acrylate, tris (2-hydroxy Ethyl) isocyanurate tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate Relatively high molecular weight of small polyfunctional monomer, polyester
  • photopolymerization initiator examples include acetophenone, benzophenone, benzyldimethylketanol, benzoyl peroxide, 2-chlorothioxanthone, 1,3-bis (4′-azidobenzal) -2-propane, 1,3-bis (4 -Azidobenzal) -2-propane-2'-sulfonic acid, 4,4'-diazidostilbene-2,2'-disulfonic acid, ethanone, 1- [9-ethyl-6- [2-methyl-4- ( 2,2-dimethyl-1,3-dioxolanyl) methoxybenzoyl] -9. H. -Carbazol-3-yl]-, 1- (O-acetyloxime) and the like.
  • the photosensitive composition of the present invention is black, it is preferable to use a photopolymerization initiator having excellent curability.
  • the total of the alkali-soluble resin and the photopolymerizable monomer is 3 to 20 parts per 100 parts of the colored composition of the present invention, and 0.05 parts per part of the photopolymerizable monomer.
  • Photosensitivity for forming a black matrix part by adding ⁇ 3 parts photopolymerization initiator and, if necessary, the organic solvent used for the preparation of the colored composition as described above, and stirring and dispersing so as to be uniform. Can be obtained.
  • the nonvolatile content is 5 to 20% in terms of mass. It is preferable to prepare such that
  • the developer a known and commonly used alkaline aqueous solution can be used.
  • the photosensitive composition contains an alkali-soluble resin, washing with an aqueous alkaline solution is effective for forming the black matrix portion.
  • the excellent heat resistance of the photosensitive composition of the present invention is exhibited in a method for producing a color filter in which baking is performed after such alkali washing.
  • a color filter may be manufactured by forming a method such as a micellar electrolysis method or a PVED (Photo Voltaic Electro Deposition) method.
  • the color filter uses a red organic pigment, a green organic pigment, a blue organic pigment, and a photosensitive composition of each color obtained by using the coloring composition of the present invention, and encapsulates a liquid crystal material between a pair of parallel transparent electrodes.
  • the transparent electrode is divided into discontinuous fine sections, and red (R), green (G), and blue (B) are divided into fine sections divided in a lattice pattern by the black matrix on the transparent electrode. It can be obtained by providing a color filter coloring pixel portion selected from any one color alternately in a pattern, or by forming a color filter coloring pixel portion on a substrate and then providing a transparent electrode.
  • the black matrix portion obtained from the photosensitive composition of the present invention contains the above-described organic pigments so as to be black.
  • the photosensitive compositions of the respective colors are mixed to form a black photosensitive composition. It seems that the same black matrix can be obtained as in the case of preparing the product, but in the present invention, in the preparation of the coloring composition, which is a stage before the photosensitive composition, the organic pigment of each color is prepared in advance. As a result, more uniform mixing is achieved, and a black matrix having better characteristics is obtained.
  • Pigment Blue 25 (synthesized based on JP-A-51-97633) is mixed with sodium chloride and diethylene glycol, and subjected to wet grinding with a stainless steel kneader (manufactured by Inoue Seisakusho Co., Ltd.), pigment A-1 to A-5 was prepared.
  • the average primary particle sizes of the pigments A-1 to A-5 were measured using the USAXS method of SmartLab (manufactured by Rigaku Corporation).
  • Pigment A-1 was 36 nm
  • Pigment A-2 was 53 nm
  • Pigment A-3 was 94 nm
  • Pigment A-4 was 155 nm
  • Pigment A-5 was 189 nm
  • Example 1 0.4 parts of the pigment A-1 obtained, 0.5 parts of LPN-21116 (manufactured by BYK, resin-based dispersant), and 7.4 parts of propylene glycol monomethyl ether acetate are mixed, and 0.2 to 0. 3 mm ⁇ zirconia beads were added and dispersed with a paint conditioner (manufactured by Toyo Seiki Co., Ltd.) for 2 hours to obtain a colored composition (B-1). To 0.1 part of the colored composition (B-1), 99.9 parts of propylene glycol monomethyl ether acetate was added to prepare an evaluation composition (C-1).
  • a paint conditioner manufactured by Toyo Seiki Co., Ltd.
  • Example 2 An evaluation composition (C-2) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-2.
  • Example 3 An evaluation composition (C-3) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-3.
  • Example 4 An evaluation composition (C-4) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-4.
  • Example 5 An evaluation composition (C-5) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-5.
  • Comparative Example 1 An evaluation composition (C-6) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Palogen Blue L6360 (CI Pigment Blue 60 manufactured by BASF Corporation).
  • Comparative Example 2 An evaluation composition (C-7) was prepared in the same manner as in Example 1 except that Pigment A-1 was changed to Fastogen Blue EP-CF (CI Pigment Blue 15: 6, manufactured by DIC Corporation). Got.
  • Example 6 Pigment A-3 (CI Pigment Blue 25, Colorant 1) 12.0 parts, Chromophthal Orange K 2960 (manufactured by BASF Corporation, CI Pigment Orange 64, Colorant 2) 1.5 parts, Paliogen Red Violet K 5411 (BASF Corporation, CI Pigment Violet 29, Colorant 3) 1.5 parts, LPN-21116 (BYK Corporation, resin dispersant) 4.5 parts, propylene glycol monomethyl ether To a mixture of 73.8 parts of acetate, 0.2 to 0.3 mm ⁇ zirconia beads were added and dispersed for 2 hours with a paint conditioner to obtain a colored composition (D-1).
  • the photosensitive resin composition (E-1) prepared above was applied using a spin coater. After vacuum drying for 1 minute, it was heated and dried at 90 ° C. for 90 seconds on a hot plate to obtain a coating film having a dry film thickness of about 3.5 ⁇ m. Thereafter, from the coating film side, two types of exposure are performed: one that exposes an image through a fine line pattern mask with a width of 15 ⁇ m (pattern 1) and one that exposes the entire surface without passing through a mask (pattern 2). It was.
  • the exposure conditions were 50 mJ / cm 2 (i-line standard) using a 3 kW high-pressure mercury lamp.
  • a shower composed of an aqueous solution containing 0.05% potassium hydroxide and 0.08% nonionic surfactant (“A-60” manufactured by Kao) was used, and a shower with a water pressure of 0.15 MPa at 23 ° C.
  • development was stopped with pure water and washed with water spray to obtain a black matrix (F-1).
  • the shower development time was adjusted between 10 and 120 seconds, and was 1.5 times as long as the unexposed coating film was dissolved and removed.
  • Example 7 Except for changing Colorant 1 of Example 6 to 7.5 parts of Pigment A-3, Colorant 2 to 3.75 parts of Chromophthal Orange K 2960, and Colorant 3 to 3.75 parts of Palogen Red Violet K 5411. The same operation as in Example 6 was performed to obtain a black matrix (F-2).
  • Example 8 Except for changing Colorant 1 of Example 6 to 3.0 parts of Pigment A-3, Colorant 2 to 6.0 parts of Chrophtal Orange K 2960, and Colorant 3 to 6.0 parts of Palaiogen Red Violet K 5411. The same operation as in Example 6 was performed to obtain a black matrix (F-3).
  • Example 9 Colorant 1 of Example 6 is added to 12.0 parts of Pigment A-3, Colorant 2 is added to 1.5 parts of PV Fast Orange H4GL01 (Clariant, CI Pigment Orange 72), and Colorant 3 is added to Paliogen.
  • a black matrix (F-4) was obtained in the same manner as in Example 6 except for changing to 1.5 parts of Red Violet K 5411.
  • Example 10 Except for changing Colorant 1 of Example 6 to 7.5 parts of Pigment A-3, Colorant 2 to 3.75 parts of PV Fast Orange H4GL01, and Colorant 3 to 3.75 parts of Palogen Red Violet K 5411. The same operation as in Example 6 was performed to obtain a black matrix (F-5).
  • Example 11 Except for changing Colorant 1 of Example 6 to 3.0 parts of Pigment A-3, Colorant 2 to 6.0 parts of PV Fast Orange H4GL01, and Colorant 3 to 6.0 parts of Palogen Red Violet K 5411 The same operation as in Example 6 was performed to obtain a black matrix (F-6).
  • Example 12 Example 6 above, except that Colorant 1 of Example 6 is changed to 12.0 parts of Pigment A-3, Colorant 2 is changed to 1.5 parts of Compound G, and Colorant 3 is changed to 1.5 parts of Chromophthal Orange K 2960.
  • the black matrix (F-7) was obtained in the same manner as in Example 1.
  • Compound G was prepared by the following operation. 53 parts of N-bromosuccinimide is added to 52500 parts of concentrated sulfuric acid having a temperature of 10 ° C. or less, and then 350 parts of compound H (the following structure) synthesized by the method described in JP-A-11-335575 is added, and the mixture is stirred at room temperature for 20 hours. Stir. Next, this was poured into 525,000 parts of ice to obtain a precipitate. The resulting precipitate was filtered, washed with water until no acid was detected, then washed with 30000 parts ethanol and dried at 90 ° C. to give 390 parts of product I.
  • the product C obtained by separating the obtained product C by silica gel column chromatography (developing solvent: chloroform / methanol / dimethyl sulfoxide) was concentrated, and 500 parts of N, N-dimethylacetamide and toluene were concentrated. 50 parts of -4-sulfonic acid monohydrate was added and stirred at 130 ° C. for 4 hours to obtain a precipitate. The precipitate was filtered, washed with 200 parts of N, N-dimethylacetamide and 800 parts of methanol, and dried at 90 ° C. to obtain Compound G (3.4 parts, yield 0.6%).
  • Example 13 Example 6 with the exception that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-3, Colorant 2 to 3.75 parts of Compound G, and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-8).
  • Example 14 Example 6 except that Colorant 1 of Example 6 was changed to 3.0 parts of Pigment A-3, Colorant 2 to 6.0 parts of Compound G, and Colorant 3 to 6.0 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-9).
  • Example 15 Example 6 except that Colorant 1 of Example 6 was changed to 1.5 parts of Pigment A-3, Colorant 2 to 10.5 parts of Compound G, and Colorant 3 to 3.0 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-10).
  • Example 16 Example 6 except that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-1, Colorant 2 to 3.75 parts of Compound G, and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-11).
  • Example 17 Example 6 except that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-2, Colorant 2 was changed to 3.75 parts of Compound G, and Colorant 3 was changed to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-12).
  • Example 18 Example 6 with the exception that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-4, Colorant 2 to 3.75 parts of Compound G, and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-13).
  • Example 19 Example 6 except that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-5, Colorant 2 to 3.75 parts of Compound G and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-14).
  • Comparative Example 3 The same as Example 6 except that Colorant 1 to 3 of Example 6 was changed to 12.0 parts Fastogen Blue EP-CF, 1.5 parts of Chromophthal Orange K 2960, 1.5 parts of Palaiogen Red Violet K 5411 Operation was performed to obtain a black matrix (F-15).
  • Comparative Example 4 The same as Example 6 except that the colorants 1 to 3 of Example 6 were changed to 7.5 parts of Fastogen Blue EP-CF, 3.75 parts of Chromophthal Orange K 2960, and 3.75 parts of Palaiogen Red Violet K 5411. Operation was performed to obtain a black matrix (F-16).
  • Comparative Example 5 The same as Example 6 except that the coloring agents 1 to 3 of Example 6 were changed to 3.0 parts Fastogen Blue EP-CF, 6.0 parts Cromot Orange K 2960, 6.0 parts Palaiogen Red Violet K 5411 Operation was performed to obtain a black matrix (F-17).
  • Example 6 Comparative Example 6 The above procedure was repeated except that Colorant 1 to 3 of Example 6 was changed to 12.0 parts Fastogen Blue EP-CF and 3.0 parts FASTOGEN Super Red ATY-TR (DIC Pigment Red 177 manufactured by DIC Corporation). The same operation as in Example 6 was performed to obtain a black matrix (F-18).
  • Comparative Example 7 The same procedure as in Example 6 was performed, except that Colorant 1 to 3 of Example 6 was changed to 7.5 parts Fastogen Blue EP-CF and 7.5 parts FASTOGEN Super Red ATY-TR. -19) was obtained.
  • Comparative Example 8 The same procedure as in Example 6 was performed, except that the colorants 1 to 3 of Example 6 were changed to 3.0 parts Fastogen Blue EP-CF and 12.0 parts FASTOGEN Super Red ATY-TR. ⁇ 20) was obtained.
  • Comparative Example 9 The same operation as in Example 6 was performed except that Colorant 1 to 3 of Example 6 was changed to 1.5 parts of Palaiogen Blue L6360, 1.5 parts of Chromophthal Orange K 2960, 1.5 parts of Palaiogen Red Violet K 5411. As a result, a black matrix (F-21) was obtained.
  • Comparative Example 10 The same operations as in Example 6 were performed except that Colorant 1 to 3 of Example 6 was changed to 7.5 parts of Palogen Blue L6360, 3.75 parts of Chromophthal Orange K 2960, and 3.75 parts of Palogen Red Violet K 5411. And a black matrix (F-22) was obtained.
  • Comparative Example 11 The same operations as in Example 6 were performed except that Colorant 1 to 3 of Example 6 was changed to 3.0 parts of Palogen Blue L6360, 6.0 parts of Chromophthal Orange K 2960, 6.0 parts of Paliogen Red Violet K 5411. And a black matrix (F-23) was obtained.
  • the black matrix obtained from the composition of the present invention had a lower absorbance at 365 nm than the black matrix of Comparative Example 4, the OD value was significantly improved as compared with the black matrices of Comparative Examples 3 to 11.
  • the black matrices of Examples 7, 10, 13, 16, 17, 18, and 19 containing 50% PB-25 were compared, Examples 13, 16, 17, and the combination of PB-25 and Compound G were used.
  • the 18 and 19 black matrices are preferred because of their large absorbance at 700 nm.
  • the absorbance at 700 nm of the black matrixes of Examples 13, 16, 17, 18, and 19 can be regarded as the same as long as the value is around 200 as compared with Comparative Example 4. In this case, the OD is larger than the absorbance at 700 nm.
  • the magnitude of the value is an important characteristic.
  • the black matrices of Examples 13, 17, and 18 containing pigments A-2, A-3, and A-4 having an average primary particle diameter in the range of 50 nm to 160 nm, respectively, have a large absorbance at 700 nm, and It can be seen that it has a high OD value and exhibits particularly excellent performance.

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Abstract

A purpose of the present invention is to provide a light-shielding pigment composition having high optical density and high light exposure sensitivity. In addition, another purpose of the present invention is to provide a light-shielding member which is for a display and comprises said light-shielding pigment composition. The purposes above are achieved by providing a light-shielding pigment composition containing two or more organic pigments, the light-shielding pigment composition being characterized by containing, as an organic pigment, at least an organic pigment (A) represented by general formula (1) (in general formula (1), R1-R6 are each independently a hydrogen atom, a halogen atom, a nitro group, an alkoxy group which may have a substituent, an amino group which may have a substituent, a sulfonyl group which may have a substituent, a carboxyl group which may have a substituent, or a monovalent hydrocarbon group which may have a substituent).

Description

遮光性顔料組成物及びディスプレイ用遮光性部材Light-shielding pigment composition and light-shielding member for display
 本発明は、高い光学濃度を実現可能な遮光性顔料組成物及び該遮光性顔料組成物を用いたディスプレイ用遮光性部材に関する。 The present invention relates to a light-shielding pigment composition capable of realizing a high optical density and a light-shielding member for a display using the light-shielding pigment composition.
 近年、液晶表示装置の分野において、カラーフィルタ基板とTFT(Thin Film Transistor:薄膜トランジスタ)アレイ基板とを一体化させたカラーフィルタオンアレイ(COA)を導入した液晶パネルが注目を浴びている。COAを用いれば、上記二つの基板を用いた場合に行われる精密な位置合わせが不要となるとともに、カラーフィルタの赤、青、緑の各画素を限界まで微細化できるため、液晶パネルの高精細化が可能となる。
 このようなCOA用の樹脂ブラックマトリクスには、高い遮光性が必要とされるため、厚膜化が要求されている。しかしながら、樹脂ブラックマトリクスの膜厚が増大するにつれて、露光された部分での膜厚方向に対する架橋密度の差が拡大してしまうため、高感度化を達成し良好な形状のブラックパターンを得ることが困難になる。また、高遮光化の手段として、遮光性の高いカーボンブラックを用いた場合も同様に、露光感度が低下するという問題があった。
 このような欠点を解消するために、カーボンブラックに代えて、複数の有機顔料を黒色となるように混合して得た黒色有機顔料組成物(有機ブラックマトリクス)を遮光材に用いる試みが最近活発に行われている(例えば、特許文献1)。
 ここで、長波長域(550nm~780nm)の遮光には主にフタロシアニンやインダンスレンといった青色顔料が使用されている。しかしながら、従来公知の青色顔料は遮光性を表すOD値(光学濃度、遮光性能を表す数値であり、数値が大きいほど遮光性能が高いことを示す)に大きく寄与する555nm付近の吸収強度が小さく、また、紫外線硬化樹脂の硬化に用いる365nmの吸収強度が大きいことから短波長域吸収顔料、中波長域吸収顔料と組み合わせて黒色としたとき、遮光が不十分であり、かつ露光感度が低下するといった問題があった。
 このような中、光学濃度に大きく寄与する555nmの吸収強度が大きく、かつ、365nmの吸収強度が小さい青色顔料が求められていた。
2. Description of the Related Art In recent years, in the field of liquid crystal display devices, a liquid crystal panel in which a color filter on array (COA) in which a color filter substrate and a TFT (Thin Film Transistor) array substrate are integrated is attracting attention. Using COA eliminates the need for precise alignment when using the above two substrates, and allows the red, blue, and green pixels of the color filter to be miniaturized to the limit. Can be realized.
Such a resin black matrix for COA is required to have a thick film because it requires a high light shielding property. However, as the film thickness of the resin black matrix increases, the difference in crosslink density in the film thickness direction at the exposed portion increases, so that high sensitivity can be achieved and a black pattern with a good shape can be obtained. It becomes difficult. Further, when carbon black having a high light shielding property is used as a means for increasing the light shielding property, there is a problem that the exposure sensitivity is similarly lowered.
In order to eliminate such drawbacks, an attempt to use a black organic pigment composition (organic black matrix) obtained by mixing a plurality of organic pigments in black instead of carbon black as a light shielding material has recently been active. (For example, Patent Document 1).
Here, blue pigments such as phthalocyanine and indanthrene are mainly used for light shielding in the long wavelength region (550 nm to 780 nm). However, the conventionally known blue pigment has a small absorption intensity near 555 nm, which greatly contributes to the OD value representing the light shielding property (the numerical value representing the optical density and the light shielding performance, indicating that the larger the numerical value is, the higher the light shielding performance). In addition, since the absorption intensity at 365 nm used for curing the ultraviolet curable resin is large, when it is black combined with the short wavelength region absorption pigment and the medium wavelength region absorption pigment, the light shielding is insufficient and the exposure sensitivity is reduced. There was a problem.
Under such circumstances, a blue pigment having a large absorption intensity at 555 nm and a small absorption intensity at 365 nm, which greatly contributes to the optical density, has been demanded.
特開平9-302265号公報JP-A-9-302265
 本発明が解決しようとする課題は、光学濃度が高く、かつ、露光感度が高い遮光性顔料組成物を提供することにある。また、該遮光性顔料組成物を含むディスプレイ用遮光性部材を提供することにある。 The problem to be solved by the present invention is to provide a light-shielding pigment composition having high optical density and high exposure sensitivity. Moreover, it is providing the light-shielding member for a display containing this light-shielding pigment composition.
 本発明者らは前記実状に鑑み、複数の有機顔料を含有してなる遮光性組成物の性能に大きな影響を与える青色顔料に注目した。多くの青色顔料が知られている中、本発明者らは青色顔料として後記する特定の有機顔料を用いることで、上記課題を解決できることを見出し、本発明を完成するに至った。
 即ち本発明は、2以上の有機顔料を含有してなる遮光性顔料組成物であって、
有機顔料として、少なくとも、下記一般式(1):
In view of the above situation, the present inventors paid attention to a blue pigment that has a great influence on the performance of a light-shielding composition containing a plurality of organic pigments. While many blue pigments are known, the present inventors have found that the above problems can be solved by using a specific organic pigment described later as a blue pigment, and have completed the present invention.
That is, the present invention is a light-shielding pigment composition containing two or more organic pigments,
As an organic pigment, at least the following general formula (1):
Figure JPOXMLDOC01-appb-C000005
(式中、R~Rはそれぞれ独立に、水素原子、ハロゲン原子、ニトロ基、置換基を有していてもよいアルコキシ基、置換基を有していてもよいアミノ基、置換基を有していてもよいスルホニル基、置換基を有していてもよいカルボキシル基、又は置換基を有していてもよい一価の炭化水素基である)で表される有機顔料(A)(便宜的に、有機顔料(A)と表記する)を含有することを特徴とする遮光性顔料組成物に関する。
Figure JPOXMLDOC01-appb-C000005
(Wherein R 1 to R 6 each independently represents a hydrogen atom, a halogen atom, a nitro group, an alkoxy group which may have a substituent, an amino group which may have a substituent, or a substituent. An organic pigment (A) represented by a sulfonyl group which may have, a carboxyl group which may have a substituent, or a monovalent hydrocarbon group which may have a substituent. For convenience, it relates to a light-shielding pigment composition comprising an organic pigment (A).
 また、本発明の別の態様として、前記有機顔料(A)が、C.I.ピグメント25又は同26であることを特徴とする遮光性顔料組成物に関する。
 また、本発明の別の態様として、前記有機顔料(A)が、下記条件(条件:可視光領域(380nm~780nm)における吸光度が波長580nm~780nmにおいて最大となり、365nmにおける吸光度が最大吸光度の50%以下、555nm及び700nmにおける吸光度が最大吸光度の50%以上である。)を満たす有機顔料(A)であることを特徴とする遮光性顔料組成物に関する。
In another embodiment of the present invention, the organic pigment (A) is C.I. I. It is related with the light-shielding pigment composition characterized by being the pigment 25 or 26.
As another aspect of the present invention, the organic pigment (A) has a maximum absorbance in the following conditions (condition: visible light region (380 nm to 780 nm) at a wavelength of 580 nm to 780 nm, and the absorbance at 365 nm is 50, which is the maximum absorbance. % Or less, the absorbance at 555 nm and 700 nm is 50% or more of the maximum absorbance.) And a light-shielding pigment composition characterized by being an organic pigment (A).
 また、本発明の別の態様として、本発明の遮光性顔料組成物がさらに、下記一般式(2)および一般式(3)で表される化学構造を含むベンズイミダゾロン系顔料、下記一般式(4)で表される化学構造を含むベンズイミダゾロンジオキサジン系顔料のうち一方または両方を含有することを特徴とする遮光性顔料組成物に関する。 Further, as another embodiment of the present invention, the light-shielding pigment composition of the present invention further comprises a benzimidazolone pigment having a chemical structure represented by the following general formula (2) and general formula (3), The present invention relates to a light-shielding pigment composition comprising one or both of benzimidazolone dioxazine pigments having a chemical structure represented by (4).
Figure JPOXMLDOC01-appb-C000006
Figure JPOXMLDOC01-appb-C000006
(式中、R~Rは、それぞれ水素原子又はハロゲン原子又は置換基を有していてもよい1価の炭化水素基を示す。) (Wherein R 1 to R 3 each represent a hydrogen atom, a halogen atom or a monovalent hydrocarbon group which may have a substituent.)
Figure JPOXMLDOC01-appb-C000007
Figure JPOXMLDOC01-appb-C000007
Figure JPOXMLDOC01-appb-C000008
Figure JPOXMLDOC01-appb-C000008
(式中、X、X、X、X、X及びXはそれぞれ独立に水素原子又はハロゲン原子を示し;X、X、X、Xの内、1つ以上はハロゲン原子であり;R、R、R及びRはそれぞれ独立に水素原子又は置換基を有していてもよい一価の炭化水素基を示す) Wherein X 1 , X 2 , X 3 , X 4 , X 5 and X 6 each independently represent a hydrogen atom or a halogen atom; one or more of X 3 , X 4 , X 5 and X 6 Is a halogen atom; R 1 , R 2 , R 3 and R 4 each independently represents a hydrogen atom or a monovalent hydrocarbon group which may have a substituent)
 また、本発明の別の態様として、前記した本発明の遮光性顔料組成物を含有するディスプレイ用遮光性部材に関する。 Also, as another aspect of the present invention, the present invention relates to a light-shielding member for display containing the light-shielding pigment composition of the present invention.
 本発明の遮光性顔料組成物は、光学濃度が高く、かつ、露光感度が高いため、ディスプレイ用遮光性部材に好適に用いることができる。 Since the light-shielding pigment composition of the present invention has a high optical density and high exposure sensitivity, it can be suitably used as a light-shielding member for displays.
 本発明の遮光性顔料組成物は、必須成分として特定の有機顔料(前記有機顔料(A))を含有し、さらに橙色、黄色、紫色、赤色等の有機顔料を併用することにより、黒色の遮光性顔料組成物を構成するものである。このような本発明の遮光性顔料組成物を含有するディスプレイ用遮光性部材は、光学濃度が高く、かつ、露光感度が高いという優れた性能を有する。
 前記有機顔料(A)は、下記一般式(1):
The light-shielding pigment composition of the present invention contains a specific organic pigment (the organic pigment (A)) as an essential component, and further uses a black, light-shielding light by using organic pigments such as orange, yellow, purple, and red together. Constituting a functional pigment composition. The light-shielding member for display containing such a light-shielding pigment composition of the present invention has excellent performance such as high optical density and high exposure sensitivity.
The organic pigment (A) has the following general formula (1):
Figure JPOXMLDOC01-appb-C000009
(式中、R~Rはそれぞれ、水素原子、ハロゲン原子、ニトロ基、置換基を有していてもよいアルコキシ基、置換基を有していてもよいアミノ基、置換基を有していてもよいスルホニル基、置換基を有していてもよいカルボキシル基、又は置換基を有していてもよい一価の炭化水素基である)で表される有機顔料である。
Figure JPOXMLDOC01-appb-C000009
(Wherein R 1 to R 6 each have a hydrogen atom, a halogen atom, a nitro group, an alkoxy group which may have a substituent, an amino group which may have a substituent, or a substituent. A sulfonyl group which may have a substituent, a carboxyl group which may have a substituent, or a monovalent hydrocarbon group which may have a substituent.
 このような有機顔料は、光学濃度に大きく寄与する555nmの吸収強度が大きく、かつ、365nmの吸収強度が小さい青色顔料であり、遮光性組成物として用いた際に、優れた光学濃度を得ることができる。
 なお、ここでハロゲン原子はフッ素原子、塩素原子、臭素原子又はヨウ素原子を示し、アルコキシ基のアルキル部分については炭素数1~6のものなどがあえて挙げるとすれば挙げられる。
Such an organic pigment is a blue pigment having a large absorption intensity at 555 nm and a small absorption intensity at 365 nm, which greatly contributes to the optical density, and obtains an excellent optical density when used as a light-shielding composition. Can do.
Here, the halogen atom represents a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, and the alkyl part of the alkoxy group may be one having 1 to 6 carbon atoms.
これらのなかでも、C.I.ピグメントブルー25(PB25とも表記する場合がある)又はC.I.ピグメントブルー26(PB26とも表記する場合がある)を用いることが好ましい。PB25、PB26は、いずれも古くから知られている有機顔料であるが、その用途は、着色剤としての使用(青色の着色を期待する用途)に限られていた。 Among these, C.I. I. Pigment Blue 25 (also referred to as PB25) or C.I. I. It is preferable to use CI Pigment Blue 26 (sometimes referred to as PB26). PB25 and PB26 are both organic pigments that have been known for a long time, but their use has been limited to use as a colorant (use that expects blue coloration).
 ここで、紫外線硬化樹脂の硬化には一般的に365nmの紫外線が多用される。紫外線とは波長100nm~400nmの光を指し、波長が短いほどエネルギーは大きくなる。しかし波長が200nm以下では酸素の分解にエネルギーが消費されたり、酸素に吸収されやすいため、紫外線硬化には、主に254nmと365nmの光源が用いられる。同じ量の光に含まれるエネルギーは、254nm光:365nm光=約3:2であるが、254nm光は2μmの厚みで40%しか樹脂の内部まで到達しないのに対し、365nm光は12μmの厚みでも90%以上が内部まで到達する。また、365nm光を発光する高圧水銀ランプは、254nm光を発光する低圧水銀ランプと同じ長さで20倍ものワット数とすることができるので、紫外線硬化には365nmの紫外線を発光する高圧水銀ランプを使用することが望ましい。 Here, generally 365 nm UV rays are frequently used for curing UV curable resins. Ultraviolet light refers to light having a wavelength of 100 nm to 400 nm, and the shorter the wavelength, the greater the energy. However, when the wavelength is 200 nm or less, energy is consumed for oxygen decomposition or is easily absorbed by oxygen. Therefore, light sources of 254 nm and 365 nm are mainly used for ultraviolet curing. The energy contained in the same amount of light is 254 nm light: 365 nm light = about 3: 2, but 254 nm light reaches only 2% of the thickness inside the resin, whereas 365 nm light has a thickness of 12 μm. But 90% or more reaches the inside. The high-pressure mercury lamp that emits 365 nm light has the same length as the low-pressure mercury lamp that emits 254 nm light and can have a wattage of 20 times. Therefore, a high-pressure mercury lamp that emits 365 nm ultraviolet light for ultraviolet curing. It is desirable to use
 遮光性の指標となるOD値はJIS Z 8701に従い、下記式より求めることができる。
Figure JPOXMLDOC01-appb-I000010
Y:輝度(明るさ)
k:定数
T:透過率
S:光源強度
y:等色関数(人間の目の感度)
OD=log10(最大輝度/Y)=log10(100/Y)
 ここで等色関数yはJIS Z 8701に記載されているものを使用し、光源強度SはJIS Z 8720に記載されているC光源(測色用補助イルミナントC)を使用することができる。各波長におけるy×C光源強度を算出した定数が最大値となる555nmにおける光の吸収強度はOD値への寄与が大きくなるため、555nmにおける光の吸収強度を簡易的な遮光性の指標とすることができる。
The OD value serving as a light-shielding index can be obtained from the following formula according to JIS Z 8701.
Figure JPOXMLDOC01-appb-I000010
Y: Brightness (brightness)
k: constant T: transmittance S: light source intensity y: color matching function (sensitivity of the human eye)
OD = log 10 (maximum luminance / Y) = log 10 (100 / Y)
Here, the color matching function y can use the one described in JIS Z 8701, and the light source intensity S can use the C light source (the auxiliary illuminant C for colorimetry) described in JIS Z 8720. Since the light absorption intensity at 555 nm where the constant for calculating the y × C light source intensity at each wavelength is the maximum value contributes greatly to the OD value, the light absorption intensity at 555 nm is used as a simple light-blocking index. be able to.
 また、JIS Z 8722では色の測定方法として、400nm~700nmの範囲を第2種分光測光器で測定する方法が挙げられている。前述の波長範囲の光を測定することで実用上の色の表現が可能となる。700nmは人間の目が色を感じられる限界に近く、700nmより長波長の光は見た目の色及びOD値への寄与が極めて小さい。なお、有機顔料を混合して黒色とするときには400nm~700nmにおいて一様に吸収を有することで見た目の黒さを高められることが知られている。したがって、黒色の遮光性組成物として望ましい見た目の黒さ、及び高いOD値を得るためには、混合に用いる長波長域に吸収を有する顔料については、700nmにおいて高い吸光度を有することが望ましい。 In JIS Z 8722, a method for measuring a range of 400 nm to 700 nm with a second type spectrophotometer is mentioned as a color measuring method. By measuring the light in the wavelength range described above, it is possible to express practical colors. 700 nm is close to the limit where human eyes can perceive a color, and light having a wavelength longer than 700 nm contributes very little to the apparent color and OD value. It is known that when an organic pigment is mixed to make it black, the apparent blackness can be increased by having uniform absorption at 400 nm to 700 nm. Therefore, in order to obtain a desired appearance blackness as a black light-shielding composition and a high OD value, it is desirable that a pigment having absorption in a long wavelength region used for mixing has a high absorbance at 700 nm.
 上記有機顔料(A)のなかでも、次の条件を満たすものを選択することが、優れた光学濃度を得られる点から好ましい。
条件:可視光領域(380nm~780nm)における吸光度が波長580nm~780nmにおいて最大となり、365nmにおける吸光度が最大吸光度の50%以下、555nm及び700nmにおける吸光度が最大吸光度の50%以上である。
Among the organic pigments (A), it is preferable to select an organic pigment satisfying the following conditions from the viewpoint of obtaining an excellent optical density.
Conditions: Absorbance in the visible light region (380 nm to 780 nm) is maximum at a wavelength of 580 nm to 780 nm, absorbance at 365 nm is 50% or less of the maximum absorbance, and absorbances at 555 nm and 700 nm are 50% or more of the maximum absorbance.
 上記のような条件を満たすかどうかは、対象となる有機顔料をPMA(プロピレングリコールモノメチルエーテルアセテート)に分散後、PMAを用いて分散液を希釈し、分光光度計(U3900、株式会社日立ハイテクサイエンス製)で吸光スペクトルを測定し、ピークトップの位置、最大吸光度、365nmにおける吸光度、555nmにおける吸光度、700nmにおける吸光度を確認することで容易に特定することができる。 Whether or not the above conditions are satisfied is determined by dispersing the target organic pigment in PMA (propylene glycol monomethyl ether acetate), diluting the dispersion with PMA, and then using a spectrophotometer (U3900, Hitachi High-Tech Science Corporation). The absorption spectrum is measured and the peak top position, the maximum absorbance, the absorbance at 365 nm, the absorbance at 555 nm, and the absorbance at 700 nm can be easily identified.
 本発明においては、前記式(1)で表される有機顔料(有機顔料(A))をそのまま用いてもよいが、上記のような条件を満たすため、平均一次粒子径の調整、結晶構造の調整、溶剤への分散性の調整などにより、上記条件を満足させて用いることができる。 In the present invention, the organic pigment represented by the formula (1) (organic pigment (A)) may be used as it is, but in order to satisfy the above conditions, the adjustment of the average primary particle diameter, the crystal structure The above-mentioned conditions can be satisfied and used by adjustment, adjustment of dispersibility in a solvent, and the like.
 ここで、有機顔料(A)として前記式(1)で表される有機顔料を用いる場合、該有機顔料は、小角エックス線散乱法での平均一次粒子径が30nm~190nmの範囲にあることが好ましく、50nm~160nmの範囲にあることがより好ましい。平均一次粒子径をこのような範囲内に調整することにより、555nmおよび700nmの吸光度を高め、光学濃度をより高くすることができる。 Here, when the organic pigment represented by the above formula (1) is used as the organic pigment (A), the organic pigment preferably has an average primary particle diameter in the range of 30 nm to 190 nm by a small angle X-ray scattering method. More preferably, it is in the range of 50 nm to 160 nm. By adjusting the average primary particle diameter within such a range, the absorbance at 555 nm and 700 nm can be increased, and the optical density can be further increased.
 本発明の遮光性顔料組成物は、従来のような銅フタロシアニンやC.I.ピグメントブルー60を混色有機顔料中の青色顔料として使用した場合に比べ、後記する実施例(表2)に示すように、光学濃度及び露光感度が顕著に優れたディスプレイ用遮光性部材を得ることができる。 The light-shielding pigment composition of the present invention includes conventional copper phthalocyanine and C.I. I. Compared to the case where CI Pigment Blue 60 is used as the blue pigment in the mixed color organic pigment, it is possible to obtain a light-shielding member for a display which is remarkably excellent in optical density and exposure sensitivity as shown in Examples (Table 2) described later. it can.
 ここでディスプレイとは、コンピュータ、テレビなどの機器から出力される静止画または動画の映像信号を表示する機器である。モニタともいい、プラズマディスプレイ(PDP)や液晶ディスプレイ(LCD)、ELディスプレイ(ELD)、電界放出ディスプレイ(FED)、クリスタルLEDディスプレイ(CLED)などがある。 Here, the display is a device that displays a video signal of a still image or a moving image output from a device such as a computer or a television. Also called a monitor, there are a plasma display (PDP), a liquid crystal display (LCD), an EL display (ELD), a field emission display (FED), a crystal LED display (CLED), and the like.
 また、本発明のディスプレイ用遮光性部材とは、可視光域または、ディスプレイにおけるバックライトのような発光部材からの発光を遮蔽するための材料である。具体的には、ブラックマトリクスや、TFT遮光膜、ブラックマスク、ブラックシール、ブラックカラムスペーサ、ELDにおける電界制限層などがある。 The light-shielding member for display of the present invention is a material for shielding light emission from a light-emitting member such as a visible light region or a backlight in a display. Specifically, there are a black matrix, a TFT light shielding film, a black mask, a black seal, a black column spacer, an electric field limiting layer in ELD, and the like.
 本発明の遮光性顔料組成物には他の有機顔料や無機顔料、染料などの着色剤を可視領域の透過性のバランスを損なわないように混合しても良い。混合される着色剤としては、アゾ顔料、縮合アゾ顔料、アゾメチン顔料、フタロシアニン顔料、キナクリドン顔料、イソインドリノン顔料、イソインドリン顔料、ジオキサジン顔料、スレン顔料、ペリレン顔料、ペリノン顔料、キノフタロン顔料、ジケトピロロピロール顔料、チオインジゴ顔料、ベンズイミダゾロン顔料、インダンスレン顔料などの絶縁性の有機顔料が好ましく、特に、黄色、橙色、赤色、紫色から選ばれた少なくとも1種の有機顔料を含有することが有利である。 In the light-shielding pigment composition of the present invention, other organic pigments, inorganic pigments, dyes and other colorants may be mixed so as not to impair the balance of transparency in the visible region. Examples of colorants to be mixed include azo pigments, condensed azo pigments, azomethine pigments, phthalocyanine pigments, quinacridone pigments, isoindolinone pigments, isoindoline pigments, dioxazine pigments, selenium pigments, perylene pigments, perinone pigments, quinophthalone pigments, diketo. Insulating organic pigments such as pyrrolopyrrole pigments, thioindigo pigments, benzimidazolone pigments, and indanthrene pigments are preferred, and particularly contain at least one organic pigment selected from yellow, orange, red, and purple. It is advantageous.
 混合する色の組合せを詳述するとすれば、例えば、青色と橙色の組合せ、青色と橙色と紫色の組合せ、青色と黄色と紫色の組合せ、青色と黄色と赤色の組合せなどが挙げられる。もちろん、青色系顔料を2種以上用いるなど、同系色を組合わせたり、同系色の組合せにさらに他色の顔料を組合わせても構わない。また、前記した有機顔料(A)以外の青色顔料をさらに併用しても構わないし、前記した有機顔料(A)に該当する顔料を複数種用いても構わない。用いる有機顔料及びその組み合わせは、目的とするブラックマトリックス等に求められている黒色度が得られれば良い。たとえば青色、黄色、赤色の三原色を減法混色することで黒色とすることなどは、当業者の技術常識に属することであり、それらの混合割合は特に制限されるものではない。以下、各色顔料の例を示す。 If the combination of colors to be mixed is described in detail, for example, a combination of blue and orange, a combination of blue, orange and purple, a combination of blue, yellow and purple, a combination of blue, yellow and red and the like can be mentioned. Of course, two or more blue pigments may be used, for example, similar colors may be combined, or other color pigments may be further combined with similar color combinations. Further, a blue pigment other than the organic pigment (A) may be used in combination, or a plurality of pigments corresponding to the organic pigment (A) may be used. The organic pigment used and the combination thereof may be obtained as long as the blackness required for the target black matrix or the like is obtained. For example, subtracting the three primary colors of blue, yellow, and red into black by subtractive color belongs to the technical common sense of those skilled in the art, and the mixing ratio thereof is not particularly limited. Examples of each color pigment are shown below.
 更に加えてもよい青色の顔料としては、例えば、C.I.ピグメントブルー1、1:2、9、14、15、15:1、15:2、15:3、15:4、15:6、16、17、19、27、28、29、33、35、36、56、56:1、61、61:1、62、63、66、67、68、71、72、73、74、75、76、78、79、80等を挙げることができる。 Further examples of blue pigments that may be added include C.I. I. Pigment Blue 1, 1: 2, 9, 14, 15, 15: 1, 15: 2, 15: 3, 15: 4, 15: 6, 16, 17, 19, 27, 28, 29, 33, 35, 36, 56, 56: 1, 61, 61: 1, 62, 63, 66, 67, 68, 71, 72, 73, 74, 75, 76, 78, 79, 80 and the like.
 黄色の顔料としては、例えば、C.I.ピグメントイエロー1、1:1、2、3、4、5、6、9、10、12、13、14、16、17、24、31、32、34、35、35:1、36、36:1、37、37:1、40、41、42、43、48、53、55、61、62、62:1、63、65、73、74、75、81、83、87、93、94、95、97、100、101、104、105、108、109、110、111、116、117、119、120、126、127、127:1、128、129、130、133、134、136、138、139、142、147、148、150、151、153、154、155、157、158、159、160、161、162、163、164、165、166、167、168、169、170、172、173、174、175、176、180、181、182、183、184、185、188、189、190、191、191:1、192、193、194、195、196、197、198、199、200、202、203、204、205、206、207、208、213、214、229等を挙げることができる。この中でも、好ましくはC.I.ピグメントイエロー83、117、129、138、139、150、154、155、180、185が挙げられ、さらに好ましくはC.I.ピグメントイエロー83、138、139、150、180を挙げることができる。 Examples of yellow pigments include C.I. I. Pigment Yellow 1, 1: 1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 14, 16, 17, 24, 31, 32, 34, 35, 35: 1, 36, 36: 1, 37, 37: 1, 40, 41, 42, 43, 48, 53, 55, 61, 62, 62: 1, 63, 65, 73, 74, 75, 81, 83, 87, 93, 94, 95, 97, 100, 101, 104, 105, 108, 109, 110, 111, 116, 117, 119, 120, 126, 127, 127: 1, 128, 129, 130, 133, 134, 136, 138, 139, 142, 147, 148, 150, 151, 153, 154, 155, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 17 , 173, 174, 175, 176, 180, 181, 182, 183, 184, 185, 188, 189, 190, 191, 191: 1, 192, 193, 194, 195, 196, 197, 198, 199, 200 202, 203, 204, 205, 206, 207, 208, 213, 214, 229 and the like. Of these, C.I. I. Pigment yellow 83, 117, 129, 138, 139, 150, 154, 155, 180, 185, and more preferably C.I. I. Pigment yellow 83, 138, 139, 150, 180.
 橙色の顔料としては、例えば、C.I.ピグメントオレンジ1、2、5、13、16、17、19、20、21、22、23、24、34、36、38、39、43、46、48、49、61、62、64、65、67、68、69、70、71、72、73、74、75、77、78、79、81等を挙げることができる。この中でも、好ましくは、C.I.ピグメントオレンジ36、38、60、62、64、72を挙げることができる。 Examples of orange pigments include C.I. I. Pigment Orange 1, 2, 5, 13, 16, 17, 19, 20, 21, 22, 23, 24, 34, 36, 38, 39, 43, 46, 48, 49, 61, 62, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79, 81, and the like. Of these, C.I. I. Pigment orange 36, 38, 60, 62, 64, 72.
 茶色の顔料としては、例えば、C.I.ピグメント・ブラウン23、25、41等を挙げることができる。 Examples of brown pigments include C.I. I. And CI Pigment Brown 23, 25, and 41.
 赤色の顔料としては、例えば、C.I.ピグメントレッド1、2、3、4、5、6、7、8、9、12、14、15、16、17、21、22、23、31、32、37、38、41、47、48、48:1、48:2、48:3、48:4、49、49:1、49:2、50:1、52:1、52:2、53、53:1、53:2、53:3、57、57:1、57:2、58:4、60、63、63:1、63:2、64、64:1、68、69、81、81:1、81:2、81:3、81:4、83、88、90:1、101、101:1、104、108、108:1、109、112、113、114、122、123、144、146、147、149、151、166、168、169、170、172、173、174、175、176、177、178、179、181、184、185、187、188、190、193、194、200、202、206、207、208、209、210、213、214、216、220、221、224、230、231、232、233、235、236、237、238、239、242、243、245、247、249、250、251、253、254、255、256、257、258、259、260、262、263、264、265、266、267、268、269、270、271、272、273、274、275、276、279等を挙げることができる。この中でも、好ましくはC.I.ピグメントレッド48:1、122、168、177、202、206、207、209、224、242、254が挙げられ、さらに好ましくはC.I.ピグメントレッド177、209、224、254を挙げることができる。 Examples of red pigments include C.I. I. Pigment Red 1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 14, 15, 16, 17, 21, 22, 23, 31, 32, 37, 38, 41, 47, 48, 48: 1, 48: 2, 48: 3, 48: 4, 49, 49: 1, 49: 2, 50: 1, 52: 1, 52: 2, 53, 53: 1, 53: 2, 53: 3, 57, 57: 1, 57: 2, 58: 4, 60, 63, 63: 1, 63: 2, 64, 64: 1, 68, 69, 81, 81: 1, 81: 2, 81: 3, 81: 4, 83, 88, 90: 1, 101, 101: 1, 104, 108, 108: 1, 109, 112, 113, 114, 122, 123, 144, 146, 147, 149, 151, 166, 168, 169, 170, 172, 173, 174, 175, 176, 177, 178, 17 , 181, 184, 185, 187, 188, 190, 193, 194, 200, 202, 206, 207, 208, 209, 210, 213, 214, 216, 220, 221, 224, 230, 231, 232, 233 235, 236, 237, 238, 239, 242, 243, 245, 247, 249, 250, 251, 253, 254, 255, 256, 257, 258, 259, 260, 262, 263, 264, 265, 266 267, 268, 269, 270, 271, 272, 273, 274, 275, 276, 279 and the like. Of these, C.I. I. Pigment Red 48: 1, 122, 168, 177, 202, 206, 207, 209, 224, 242, 254, and more preferably C.I. I. Pigment red 177, 209, 224, 254.
 紫色の顔料としては、例えば、C.I.ピグメントバイオレット1、1:1、2、2:2、3、3:1、3:3、5、5:1、14、15、16、19、23、25、27、29、31、32、37、39、42、44、47、49、50等を挙げることができる。この中でも、好ましくはC.I.ピグメントバイオレット19、23、29が挙げられ、さらに好ましくはC.I.ピグメントバイオレット23を挙げることができる。 Examples of purple pigments include C.I. I. Pigment Violet 1, 1: 1, 2, 2: 2, 3, 3: 1, 3: 3, 5, 5: 1, 14, 15, 16, 19, 23, 25, 27, 29, 31, 32, 37, 39, 42, 44, 47, 49, 50 and the like. Of these, C.I. I. Pigment violet 19, 23, 29, and more preferably C.I. I. And CI Pigment Violet 23.
 緑色の顔料としては、例えば、C.I.ピグメントグリーン1、2、4、7、8、10、13、14、15、17、18、19、26、36、45、48、50、51、54、55、58、59を挙げることができる。この中でも、好ましくはC.I.ピグメントグリーン7、36を挙げることができる。 Examples of green pigments include C.I. I. Pigment green 1, 2, 4, 7, 8, 10, 13, 14, 15, 17, 18, 19, 26, 36, 45, 48, 50, 51, 54, 55, 58, 59. . Of these, C.I. I. And CI Pigment Green 7 and 36.
 本発明の遮光性顔料組成物にさらに併用する有機顔料として、より好適な遮光性を得ることができる観点から、下記一般式(2)および一般式(3)で表される化学構造を含むベンズイミダゾロン系顔料、下記一般式(4)で表される化学構造を含むベンズイミダゾロンジオキサジン系顔料の一方または両方を用いることが好ましい。 As an organic pigment further used in combination with the light-shielding pigment composition of the present invention, a benz having a chemical structure represented by the following general formula (2) and general formula (3) from the viewpoint of obtaining a more suitable light-shielding property It is preferable to use one or both of an imidazolone pigment and a benzimidazolone dioxazine pigment having a chemical structure represented by the following general formula (4).
Figure JPOXMLDOC01-appb-C000011
Figure JPOXMLDOC01-appb-C000011
(式中、R~Rは、それぞれ水素原子又はハロゲン原子又は置換基を有していてもよい1価の炭化水素基を示す。) (Wherein R 1 to R 3 each represent a hydrogen atom, a halogen atom or a monovalent hydrocarbon group which may have a substituent.)
Figure JPOXMLDOC01-appb-C000012
Figure JPOXMLDOC01-appb-C000012
Figure JPOXMLDOC01-appb-C000013
Figure JPOXMLDOC01-appb-C000013
(式中、X、X、X、X、X及びXはそれぞれ独立に水素原子又はハロゲン原子を示し;X、X、X、Xの内、1つ以上はハロゲン原子であり;R、R、R及びRはそれぞれ独立に水素原子又は置換基を有していてもよい一価の炭化水素基を示す) Wherein X 1 , X 2 , X 3 , X 4 , X 5 and X 6 each independently represent a hydrogen atom or a halogen atom; one or more of X 3 , X 4 , X 5 and X 6 Is a halogen atom; R 1 , R 2 , R 3 and R 4 each independently represents a hydrogen atom or a monovalent hydrocarbon group which may have a substituent)
 なお、上記式(4)の化合物は、特に制限されるものではなく従来公知の方法を適宜利用して製造することができる。以下、上記式(4)の化合物の製造方法の一態様を記載する。 The compound of the above formula (4) is not particularly limited and can be produced by appropriately using a conventionally known method. Hereinafter, an embodiment of a method for producing the compound of the above formula (4) will be described.
 上記式(4)の化合物は、例えば、特開平11-335575に記載の方法で後記する式(V)の化合物を合成し、これを、後記するハロゲン化反応でハロゲン化することにより製造することができる。詳細を下記する。 The compound of the above formula (4) can be produced, for example, by synthesizing a compound of the formula (V) described later by the method described in JP-A No. 11-335575 and halogenating it by a halogenation reaction described later. Can do. Details are given below.
<縮合反応>
 酢酸ナトリウム、炭酸水素ナトリウム、トリエチルアミンなどの塩基1モル及び下記式(II)のp-ベンゾキノン化合物2モルをエタノール、ジメチルアセトアミドなどの溶剤中に懸濁し、そしてこの懸濁液を40℃~70℃に加熱する。下記式(III)のアミン化合物1モルを1時間かけて添加し、そしてこの混合物を引き続き還流下で1時間~10時間加熱する。次いで更に酢酸ナトリウム、炭酸水素ナトリウム、トリエチルアミンなどの塩基1モルを添加し、次いで、下記式(IV)のアミン化合物1モルを添加する。この混合物を還流下で1時間~10時間撹拌し、次いで固体生成物を熱いうちに濾別し、そして60℃~100℃のエタノール、ジメチルアセトアミドなどの溶剤で洗浄し、次いで沸騰水で洗浄する。生成物をジメチルホルムアミド、ジメチルアセトアミドなどの溶剤中に懸濁し、この懸濁液を80℃~150℃にて1時間~10時間加熱し、熱いうちに濾過し、この固体生成物を60℃~100℃のエタノール、ジメチルアセトアミドなどの溶剤で洗浄し、次いで沸騰水で洗浄し、90℃~120℃で乾燥させる。
<Condensation reaction>
1 mol of a base such as sodium acetate, sodium hydrogen carbonate, triethylamine and 2 mol of a p-benzoquinone compound of the following formula (II) are suspended in a solvent such as ethanol or dimethylacetamide, and the suspension is heated to 40 ° C to 70 ° C. Heat to. 1 mol of the amine compound of the formula (III) below is added over 1 hour and the mixture is subsequently heated under reflux for 1 to 10 hours. Next, 1 mol of a base such as sodium acetate, sodium hydrogen carbonate, triethylamine and the like are added, and then 1 mol of an amine compound of the following formula (IV) is added. The mixture is stirred under reflux for 1 to 10 hours, then the solid product is filtered off while hot and washed with a solvent such as ethanol, dimethylacetamide, etc. at 60 ° C. to 100 ° C. and then with boiling water. . The product is suspended in a solvent such as dimethylformamide, dimethylacetamide, and the suspension is heated at 80 ° C. to 150 ° C. for 1 hour to 10 hours and filtered while hot. It is washed with a solvent such as ethanol and dimethylacetamide at 100 ° C., then with boiling water and dried at 90 ° C. to 120 ° C.
Figure JPOXMLDOC01-appb-C000014
Figure JPOXMLDOC01-appb-C000014
(式(II)中、X及びXはそれぞれ独立に水素原子、又はハロゲン原子を示し、X及びXはそれぞれ独立にハロゲン原子、アルコキシ基などの脱離基を示す。) (In formula (II), X 1 and X 2 each independently represent a hydrogen atom or a halogen atom, and X 7 and X 8 each independently represent a leaving group such as a halogen atom or an alkoxy group.)
Figure JPOXMLDOC01-appb-C000015
Figure JPOXMLDOC01-appb-C000015
(式(III)中、R及びRはそれぞれ独立に水素原子、又は置換基を有していてもよい一価の炭化水素基を示す。) (In formula (III), R 1 and R 2 each independently represent a hydrogen atom or a monovalent hydrocarbon group which may have a substituent.)
Figure JPOXMLDOC01-appb-C000016
Figure JPOXMLDOC01-appb-C000016
(式(IV)中、R及びRはそれぞれ独立に水素原子、又は置換基を有していてもよい一価の炭化水素基を示す。) (In formula (IV), R 3 and R 4 each independently represent a hydrogen atom or a monovalent hydrocarbon group which may have a substituent.)
<閉環反応>
 前記縮合反応で得られた生成物を、10℃以下の濃硫酸に1時間かけて添加する。次いで二酸化マンガン2モル~4モルを3時間かけて添加し、この混合物を引き続き室温にて18時間~48時間攪拌する。この混合物を、冷却しながら水を添加することにより硫酸濃度80%に希釈する。過剰の二酸化マンガンを、過酸化水素(30%)を用いて破壊する。この混合物をポリプロピレンフィルターにて濾過し、この固体生成物を硫酸(80%)で洗浄し、次いで硫酸(50%)で洗浄し、引続き水で洗浄する。90℃~120℃で乾燥し、下記式(V)で表される化合物を得る。
<Ring ring reaction>
The product obtained by the condensation reaction is added to concentrated sulfuric acid at 10 ° C. or lower over 1 hour. Then 2-4 mol of manganese dioxide are added over 3 hours and the mixture is subsequently stirred at room temperature for 18-48 hours. The mixture is diluted to 80% sulfuric acid concentration by adding water with cooling. Excess manganese dioxide is destroyed using hydrogen peroxide (30%). The mixture is filtered through a polypropylene filter and the solid product is washed with sulfuric acid (80%), then with sulfuric acid (50%) and subsequently with water. Drying at 90 ° C. to 120 ° C. yields a compound represented by the following formula (V).
Figure JPOXMLDOC01-appb-C000017
Figure JPOXMLDOC01-appb-C000017
(式(V)中、X及びXはそれぞれ独立に水素原子又はハロゲン原子を示し;R、R、R及びRはそれぞれ独立に水素原子、又は置換基を有していてもよい一価の炭化水素基を示す。) (In Formula (V), X 1 and X 2 each independently represent a hydrogen atom or a halogen atom; R 1 , R 2 , R 3 and R 4 each independently have a hydrogen atom or a substituent. A good monovalent hydrocarbon group.)
<ハロゲン付加反応>
 臭素、N-ブロモスクシンイミド、トリクロロイソシアヌル酸、N-ヨードスクシンイミドなどのハロゲン化試薬1モル~32モルを温度が10℃以下の濃硫酸に添加し、次いで前記閉環反応で得られた上記式(V)で表される化合物1モルを添加し、室温で2時間~48時間撹拌する。次いでこれを氷に注ぎ、得られた沈殿物を濾過し、酸が検出されなくなるまで水で洗浄し、次いでエタノールで洗浄し、90℃~120℃で乾燥し、ベンゼン環がハロゲン原子で1~4置換された化合物の混合物として得られる。この方法を経て単一化合物として得る場合は、得られた混合物を、N,N-ジメチルホルムアミドなどの溶剤に添加し、次いで4-ジメチルアミノピリジンなどの塩基、ジ-tert-ブチルジカーボネート(「tert」はターシャリーの意味で記載している)などのカーボネート化合物を添加し、室温で2時間~48時間攪拌する。次いでこれを水に注ぎ、クロロホルムなどの溶剤で抽出し、溶剤層を減圧下で濃縮し混合物を得る。得られた混合物を、シリカゲルカラムクロマトグラフィーで分離して得られる単一化合物を有する溶液それぞれを濃縮し、N,N-ジメチルアセトアミドなどの溶剤及びトルエン-4-スルホン酸一水和物などの酸を添加し、100℃~200℃で2時間~24時間攪拌し、沈殿物を得る。沈殿物を濾過し、N,N-ジメチルアセトアミドなどの溶剤で洗浄し、90℃~120℃で乾燥し、上記式(4)の化合物を得ることができる。
<Halogen addition reaction>
1 to 32 moles of a halogenating reagent such as bromine, N-bromosuccinimide, trichloroisocyanuric acid, N-iodosuccinimide and the like are added to concentrated sulfuric acid having a temperature of 10 ° C. or less, and then the above formula (V 1 mol of the compound represented by) is added and stirred at room temperature for 2 to 48 hours. This is then poured onto ice and the resulting precipitate is filtered, washed with water until no acid is detected, then washed with ethanol, dried at 90 ° C. to 120 ° C., and the benzene ring is 1 to 6 halogen atoms. Obtained as a mixture of tetrasubstituted compounds. When obtained as a single compound via this method, the resulting mixture is added to a solvent such as N, N-dimethylformamide and then a base such as 4-dimethylaminopyridine, di-tert-butyl dicarbonate (" A carbonate compound such as “tert” is described in the meaning of tertiary) is added and stirred at room temperature for 2 to 48 hours. Next, this is poured into water, extracted with a solvent such as chloroform, and the solvent layer is concentrated under reduced pressure to obtain a mixture. The obtained mixture is separated by silica gel column chromatography, each solution having a single compound is concentrated, and a solvent such as N, N-dimethylacetamide and an acid such as toluene-4-sulfonic acid monohydrate are concentrated. And stirred at 100 ° C. to 200 ° C. for 2 to 24 hours to obtain a precipitate. The precipitate is filtered, washed with a solvent such as N, N-dimethylacetamide, and dried at 90 to 120 ° C. to obtain the compound of the above formula (4).
 本発明の遮光性顔料組成物は、ディスプレイ用遮光性部材の仕様に合わせて、各有機顔料を単独に微細化して混合しても良いし、混合後微細化処理をしても構わない。 In the light-shielding pigment composition of the present invention, each organic pigment may be pulverized individually and mixed in accordance with the specifications of the light-shielding member for display.
 顔料の微細化の方法は、公知公用の方法で行うことができ、特に限定されるものではない。一般に、ソルベントソルトミリング法、硫酸溶解法、乾式磨砕法、有機溶媒および水による常圧および加圧による顔料化法、または、これらの組み合わせによる方法等を採用することができる。 The method for refining the pigment can be performed by a publicly known method and is not particularly limited. In general, a solvent salt milling method, a sulfuric acid dissolution method, a dry grinding method, a pigmentation method by normal pressure and pressurization with an organic solvent and water, or a combination of these methods can be employed.
 本発明組成物と共に、有機色素誘導体を混在させても良く、有機色素誘導体は、スルホン酸基、フタルイミド基を有する又は、スルホン酸塩である有機色素誘導体であればいかなる化学構造を有していても良い。スルホン酸基、フタルイミド基を有する又は、スルホン酸塩である有機色素誘導体は、有機顔料をバインダおよび溶剤系において、分散性を向上するために添加する場合が多く、その効果は良く知られている。スルホン酸基の置換基数は、1分子あたり1~4であり、好ましくは1~2である。本発明の顔料組成物は、黒色系のため、如何なる有機色素誘導体を使用することができる。具体的にはアゾ構造、ベンツイミダゾロン構造、キナクリドン構造、ジケトピロロピロール構造、フタロシアニン構造、ジオキサジンバイオレット構造等があり、その中でも好ましいのが、銅フタロシアニンスルホン酸またはその塩、フタルイミドメチル銅フタロシアニン、キナクリドンスルホン酸またはその塩、フタルイミドメチルキナクリドンである。スルホン酸と塩を形成する金属は、Ca、Na、K、Mg、Fe、Co、Ni、Cu、Zn等の一価又は二価の金属である。また、金属塩以外の塩を形成するものとして、脂肪族アミン(NHR、NHR、[NR(R:炭素数1~20のアルキル基))等の有機アミン塩がある。 An organic dye derivative may be mixed with the composition of the present invention, and the organic dye derivative has any chemical structure as long as it has a sulfonic acid group, a phthalimide group, or is an organic dye derivative that is a sulfonate. Also good. Organic pigment derivatives having sulfonic acid groups, phthalimide groups, or sulfonates are often added to improve the dispersibility of organic pigments in binders and solvent systems, and their effects are well known. . The number of substituents of the sulfonic acid group is 1 to 4 per molecule, preferably 1 to 2. Since the pigment composition of the present invention is black, any organic dye derivative can be used. Specifically, there are an azo structure, a benzimidazolone structure, a quinacridone structure, a diketopyrrolopyrrole structure, a phthalocyanine structure, a dioxazine violet structure, and among them, copper phthalocyanine sulfonic acid or a salt thereof, phthalimidomethyl copper phthalocyanine Quinacridonesulfonic acid or a salt thereof, phthalimidomethylquinacridone. The metal that forms a salt with the sulfonic acid is a monovalent or divalent metal such as Ca, Na, K, Mg, Fe, Co, Ni, Cu, and Zn. Examples of salts other than metal salts include organic amine salts such as aliphatic amines (NHR 2 , NH 2 R, [NR 4 ] + (R: alkyl group having 1 to 20 carbon atoms)).
 有機色素誘導体は、有機顔料100部当たり、1~20部の範囲で含有する。色相、生産性を考慮すると、1~15部の範囲で含有することが好ましい。有機色素誘導体を添加する時期は、本発明で実施している有機顔料を微細化する工程で添加しても構わないし、微細化工程後、有機顔料を洗浄し精製した後に添加しても構わない。しかし、スルホン酸基を有する又はその塩である有機色素誘導体による分散性効果の付与を考慮すると、微細化した後の有機顔料に処理することが好ましい。 Organic pigment derivative is contained in the range of 1 to 20 parts per 100 parts of organic pigment. Considering hue and productivity, it is preferably contained in the range of 1 to 15 parts. The timing of adding the organic pigment derivative may be added in the step of refining the organic pigment carried out in the present invention, or may be added after washing and refining the organic pigment after the step of refining. . However, in consideration of imparting a dispersibility effect by an organic dye derivative having a sulfonic acid group or a salt thereof, it is preferable to treat the organic pigment after being refined.
 有機色素誘導体の処理方法は、固体またはアルカリにより染料化し、酸性状態で有機顔料表面に吸着させる方法がある。固体の場合、微細化処理した有機顔料と水等の溶媒を含有したウェットケーキに添加する。アルカリによる有機色素誘導体の染料化は、通常pH8~12で行われ、その後、微細化した有機顔料とスラリー中で混合、その後、系内を酸性、通常pH3~5に調整し、有機顔料表面に有機色素誘導体を析出させる。また、本発明の遮光性顔料組成物を製造する上で、有機色素誘導体以外に各種添加剤を添加してもよい。具体的には、光又は熱硬化性樹脂、界面活性剤、分散剤、ロジン等をあげることができる。 The organic pigment derivative is treated by dyeing with a solid or alkali and adsorbing it on the surface of the organic pigment in an acidic state. In the case of a solid, it is added to a wet cake containing a refined organic pigment and a solvent such as water. Dyeing of organic pigment derivatives with alkali is usually carried out at pH 8-12, then mixed with finely divided organic pigment in a slurry, and then the inside of the system is adjusted to acidity, usually pH 3-5, on the surface of the organic pigment. An organic pigment derivative is precipitated. Moreover, when manufacturing the light-shielding pigment composition of this invention, you may add various additives other than an organic pigment derivative. Specific examples include light or thermosetting resins, surfactants, dispersants, rosins, and the like.
 本発明の顔料組成物と、必要に応じて樹脂系分散剤と有機溶剤から着色組成物を作製する。着色組成物の作成方法としては、別々に各色有機顔料、有機溶剤、分散剤を分散した着色組成物を混合しても良いし、全有機顔料を一度に有機溶剤、分散剤と分散させても良い。 A colored composition is prepared from the pigment composition of the present invention and, if necessary, a resin dispersant and an organic solvent. As a method for producing a colored composition, a colored composition in which each color organic pigment, organic solvent and dispersant are dispersed may be mixed separately, or all organic pigments may be dispersed with the organic solvent and dispersant at once. good.
 これら顔料組成物を有機溶剤中に分散させる場合、分散性の向上、及び分散安定性の向上のために、樹脂系分散剤が併用される。この樹脂系分散剤は、有機顔料とアンカー部位と結合して、相溶性部分が分散媒に伸長して分散体を構成する機能を有するものであり、後記する感光性組成物の調製に用いるアルカリ可溶性樹脂や、光重合性モノマーとは、別種のものである。 When dispersing these pigment compositions in an organic solvent, a resin-based dispersant is used in combination for improving dispersibility and dispersion stability. This resin-based dispersant has a function of binding the organic pigment and the anchor site, and the compatible part extends into the dispersion medium to form a dispersion. An alkali used for the preparation of the photosensitive composition described later is used. The soluble resin and the photopolymerizable monomer are different types.
 樹脂系分散剤としては、高分子鎖を有するもの、例えば、ポリウレタン樹脂、ポリエチレンイミン、ポリオキシエチレングリコールジエステル、アクリル樹脂、ポリエステル樹脂等を挙げることができる。中でも、ポリエステル樹脂系分散剤及び/又はアクリル樹脂系分散剤が、分散性、耐熱性、耐光性の点で好ましい。 Examples of the resin dispersant include those having a polymer chain, such as polyurethane resin, polyethyleneimine, polyoxyethylene glycol diester, acrylic resin, polyester resin, and the like. Among these, polyester resin dispersants and / or acrylic resin dispersants are preferable in terms of dispersibility, heat resistance, and light resistance.
 各種樹脂系分散剤の具体例としては、商品名で、アジスパー(味の素ファインテクノ社製)、EFKA(BASF社製)、DISPERBYK(ビックケミー社製)、ディスパロン(楠本化成社製)、SOLSPERSE(ルーブリゾール社製)、KP(信越化学工業社製)、ポリフロー(共栄社化学社製)等を挙げることができる。これらの分散剤は、1種を用いてもよく、2種以上を任意の組み合わせ及び比率で併用することができる。 Specific examples of various resinous dispersants include trade names, Ajisper (manufactured by Ajinomoto Fine Techno Co., Ltd.), EFKA (manufactured by BASF Corp.), DISPERBYK (manufactured by Big Chemie Corp.), Disparon (manufactured by Enomoto Kasei Co., Ltd.), SOLPERSE (Lubrisol) Company-made), KP (manufactured by Shin-Etsu Chemical Co., Ltd.), polyflow (manufactured by Kyoeisha Chemical Co., Ltd.) and the like. 1 type may be used for these dispersing agents, and 2 or more types can be used together by arbitrary combinations and a ratio.
 樹脂系分散剤は、各色の有機顔料の合計の質量換算100部当たり、通常30~60部、好ましくは38~50部である。 The resin-based dispersant is usually 30 to 60 parts, preferably 38 to 50 parts, per 100 parts in terms of the total mass of the organic pigments of each color.
 ここで用いられる有機溶剤としては、例えば、ジイソプロピルエーテル、ミネラルスピリット、n-ペンタン、アミルエーテル、エチルカプリレート、n-ヘキサン、ジエチルエーテル、イソプレン、エチルイソブチルエーテル、ブチルステアレート、n-オクタン、バルソル#2、アプコ#18ソルベント、ジイソブチレン、アミルアセテート、ブチルアセテート、アプコシンナー、ブチルエーテル、ジイソブチルケトン、メチルシクロヘキセン、メチルノニルケトン、プロピルエーテル、ドデカン、ソーカルソルベントNo.1及びNo.2、アミルホルメート、ジヘキシルエーテル、ジイソプロピルケトン、ソルベッソ#150、(n,sec,t-)酢酸ブチル、ヘキセン、シェルTS28 ソルベント、ブチルクロライド、エチルアミルケトン、エチルベンゾエート、アミルクロライド、エチレングリコールジエチルエーテル、エチルオルソホルメート、メトキシメチルペンタノン、メチルブチルケトン、メチルヘキシルケトン、メチルイソブチレート、ベンゾニトリル、エチルプロピオネート、メチルセロソルブアセテート、メチルイソアミルケトン、n-アミルメチルケトン(2-ヘプタノン)、メチルイソブチルケトン、プロピルアセテート、アミルアセテート、アミルホルメート、ビシクロヘキシル、ジエチレングリコールモノエチルエーテルアセテート、ジペンテン、メトキシメチルペンタノール、メチルアミルケトン、メチルイソプロピルケトン、プロピルプロピオネート、プロピレングリコール-t-ブチルエーテル、メチルエチルケトン、メチルセロソルブ、エチルセロソルブ、エチルセロソルブアセテート、カルビトール、シクロヘキサノン、酢酸エチル、プロピレングリコール、プロピレングリコールモノメチルエーテル、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノエチルエーテル、プロピレングリコールモノエチルエーテルアセテート、ジプロピレングリコールモノエチルエーテル、ジプロピレングリコールジメチルエーテル、ジプロピレングリコールモノメチルエーテル、ジプロピレングリコールモノメチルエーテルアセテート、3-メトキシプロピオン酸、3-エトキシプロピオン酸、3-エトキシプロピオン酸メチル、3-エトキシプロピオン酸エチル、3-メトキシプロピオン酸メチル、3-メトキシプロピオン酸エチル、3-メトキシプロピオン酸プロピル、3-メトキシプロピオン酸ブチル、ジグライム、エチレングリコールアセテート、エチルカルビトール、ブチルカルビトール、エチレングリコールモノブチルエーテル、プロピレングリコール-t-ブチルエーテル、3-メトキシブタノール、3-メチル-3-メトキシブタノール、トリプロピレングリコールメチルエーテル、3-メトキシブチルアセテート、3-メチル-3-メトキシブチルアセテート等が挙げられる。 Examples of the organic solvent used here include diisopropyl ether, mineral spirit, n-pentane, amyl ether, ethyl caprylate, n-hexane, diethyl ether, isoprene, ethyl isobutyl ether, butyl stearate, n-octane, and valsol. # 2, Apco # 18 solvent, diisobutylene, amyl acetate, butyl acetate, apcocinner, butyl ether, diisobutyl ketone, methylcyclohexene, methyl nonyl ketone, propyl ether, dodecane, soak solvent no. 1 and no. 2, amyl formate, dihexyl ether, diisopropyl ketone, Solvesso # 150, (n, sec, t-) butyl acetate, hexene, shell TS28 solvent, butyl chloride, ethyl amyl ketone, ethyl benzoate, amyl chloride, ethylene glycol diethyl ether , Ethyl orthoformate, methoxymethylpentanone, methyl butyl ketone, methyl hexyl ketone, methyl isobutyrate, benzonitrile, ethyl propionate, methyl cellosolve acetate, methyl isoamyl ketone, n-amyl methyl ketone (2-heptanone) , Methyl isobutyl ketone, propyl acetate, amyl acetate, amyl formate, bicyclohexyl, diethylene glycol monoethyl ether acetate, dipen , Methoxymethylpentanol, methyl amyl ketone, methyl isopropyl ketone, propyl propionate, propylene glycol-t-butyl ether, methyl ethyl ketone, methyl cellosolve, ethyl cellosolve, ethyl cellosolve acetate, carbitol, cyclohexanone, ethyl acetate, propylene glycol, Propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether, propylene glycol monoethyl ether acetate, dipropylene glycol monoethyl ether, dipropylene glycol dimethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monomethyl ether acetate, 3 -Methoxypro Pionic acid, 3-ethoxypropionic acid, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, propyl 3-methoxypropionate, butyl 3-methoxypropionate , Diglyme, ethylene glycol acetate, ethyl carbitol, butyl carbitol, ethylene glycol monobutyl ether, propylene glycol-t-butyl ether, 3-methoxybutanol, 3-methyl-3-methoxybutanol, tripropylene glycol methyl ether, 3-methoxy Examples include butyl acetate and 3-methyl-3-methoxybutyl acetate.
 着色組成物を用いて、フォトリソグラフィー方式でブラックマトリックスを形成するための感光性組成物を調製する際には、低粘度で塗工性、作業性、吐出性に優れたものとするために、少なくとも、着色組成物に含有させる有機溶剤としてはn-アミルメチルケトン(2-ヘプタノン)を用いることが好ましい。 When preparing a photosensitive composition for forming a black matrix by a photolithographic method using a coloring composition, in order to make it low viscosity and excellent in coating property, workability, and ejection property, At least n-amyl methyl ketone (2-heptanone) is preferably used as the organic solvent contained in the coloring composition.
 着色組成物を調製するために、有機溶剤は1種を単独で用いてもよく、2種以上を任意の組み合わせ及び比率で併用することができる。しかしながら、本発明の着色組成物において、有機溶剤は、各色の有機顔料の合計の質量換算100部当たり、通常300~800部、好ましくは400~600部用いることが好ましい。 In order to prepare the coloring composition, one organic solvent may be used alone, or two or more organic solvents may be used in any combination and ratio. However, in the colored composition of the present invention, the organic solvent is preferably used in an amount of usually 300 to 800 parts, preferably 400 to 600 parts, per 100 parts in terms of the total mass of the organic pigments of each color.
 着色組成物の調製に当たっては、必要に応じて、例えば各種の顔料誘導体等を併用することができる。顔料誘導体の置換基としては、例えばスルホン酸基、スルホンアミド基及びその4級塩、フタルイミドメチル基、ジアルキルアミノアルキル基、水酸基、カルボキシル基、アミド基等が顔料骨格に直接又はアルキル基、アリール基、複素環基等を介して結合したものが挙げられる。 In preparing the coloring composition, for example, various pigment derivatives can be used in combination as required. Examples of the substituent of the pigment derivative include a sulfonic acid group, a sulfonamide group and a quaternary salt thereof, a phthalimidomethyl group, a dialkylaminoalkyl group, a hydroxyl group, a carboxyl group, and an amide group directly on the pigment skeleton or an alkyl group and an aryl group. And those bonded via a heterocyclic group or the like.
 着色組成物は、上記した各色の有機顔料組成物、樹脂系分散剤及び有機溶剤を撹拌混合することにより調製することができる。必要であれば、ビーズやロッド等の各種粉砕メディアの存在下、上記混合物を必要時間に亘って振とう、分散させ、当該メディアを濾過等により除くことで調製することもできる。 The coloring composition can be prepared by stirring and mixing the organic pigment composition of each color described above, the resin dispersant, and the organic solvent. If necessary, it can also be prepared by shaking and dispersing the mixture over a required time in the presence of various grinding media such as beads and rods, and removing the media by filtration or the like.
 着色組成物は、従来公知の方法でディスプレイの構成部材であるカラーフィルタのブラックマトリックスやブラックマスク、液晶層のカラムスペーサーやブラックシール、TFT遮光膜、ELDにおける電界制限層、その他ディスプレイの遮光を必要とする部材に使用することができる。 The coloring composition requires a black matrix or black mask of a color filter, which is a component of a display, a column spacer or black seal of a liquid crystal layer, a TFT light shielding film, an electric field limiting layer in an ELD, or other light shielding by a conventionally known method. It can be used for the member.
 カラーフィルタの代表的な製造方法は、フォトリソグラフィー法であり、ブラックマトリックスは、本発明の着色組成物から調製された後記する感光性組成物を、カラーフィルタ用の透明基板上に塗布し、加熱乾燥(プリベーク)した後、フォトマスクを介して紫外線を照射することでパターン露光を行って、ブラックマトリックス部に対応する箇所の光硬化性化合物を硬化させた後、未露光部分を現像液で現像し、非画素部を除去して画素部を透明基板に固着させる方法である。この方法で、感光性組成物の硬化着色皮膜からなるブラックマトリックス部が透明基板上に形成される。RGBの各画素部も、より比表面積の大きな各色の有機顔料から調製された感光性組成物から、上記の様にして同様に調製することができる。 A typical production method of a color filter is a photolithography method, and a black matrix is prepared by applying a photosensitive composition described later prepared from the coloring composition of the present invention onto a transparent substrate for a color filter and heating. After drying (pre-baking), pattern exposure is performed by irradiating ultraviolet rays through a photomask to cure the photo-curable compound at the location corresponding to the black matrix portion, and then developing the unexposed portion with a developer. The non-pixel portion is removed and the pixel portion is fixed to the transparent substrate. By this method, a black matrix portion made of a cured colored film of the photosensitive composition is formed on the transparent substrate. Each of the RGB pixel portions can also be prepared in the same manner as described above from a photosensitive composition prepared from each color organic pigment having a larger specific surface area.
 後記する感光性組成物をガラス等の透明基板上に塗布する方法としては、例えば、スピンコート法、ロールコート法、スリットコート法、インクジェット法等が挙げられる。 Examples of a method for applying a photosensitive composition described later on a transparent substrate such as glass include a spin coating method, a roll coating method, a slit coating method, and an inkjet method.
 透明基板に塗布した感光性組成物の塗膜の乾燥条件は、各成分の種類、配合割合等によっても異なるが、通常、50~150℃で、1~15分間程度である。この加熱処理を一般に「プリベーク」という。また、感光性組成物の光硬化に用いる光としては、200~500nmの波長範囲の紫外線、あるいは可視光を使用するのが好ましい。この波長範囲の光を発する各種光源が使用出来る。 The drying condition of the coating film of the photosensitive composition applied to the transparent substrate is usually about 50 to 150 ° C. for about 1 to 15 minutes, although it depends on the kind of each component, the blending ratio, and the like. This heat treatment is generally referred to as “pre-baking”. In addition, as light used for photocuring the photosensitive composition, it is preferable to use ultraviolet rays or visible light having a wavelength range of 200 to 500 nm. Various light sources that emit light in this wavelength range can be used.
 現像方法としては、例えば、液盛り法、ディッピング法、スプレー法等が挙げられる。感光性組成物の露光、現像の後に、ブラックマトリックス或いは必要な色の画素部が形成された透明基板は水洗いし乾燥させる。こうして得られたカラーフィルタは、ホットプレート、オーブン等の加熱装置により、100~280℃で、所定時間加熱処理(ポストベーク)することによって、着色塗膜中の揮発性成分を除去すると同時に、感光性組成物の硬化着色皮膜中に残存する未反応の光硬化性化合物が熱硬化し、カラーフィルタが完成する。 Examples of the developing method include a liquid filling method, a dipping method, and a spray method. After exposure and development of the photosensitive composition, the transparent substrate on which the black matrix or the pixel portion of the necessary color is formed is washed with water and dried. The color filter thus obtained is subjected to a heat treatment (post-baking) at 100 to 280 ° C. for a predetermined time with a heating device such as a hot plate or an oven to remove volatile components in the colored coating film, and at the same time, The unreacted photocurable compound remaining in the cured colored film of the curable composition is thermally cured to complete the color filter.
 カラーフィルタのブラックマトリックス部を形成するための感光性組成物は、本発明の着色組成物と、アルカリ可溶性樹脂と、光重合性モノマーと、光重合開始剤とを必須成分とし、これらを混合することで調製することが出来る。 The photosensitive composition for forming the black matrix part of the color filter has the coloring composition of the present invention, an alkali-soluble resin, a photopolymerizable monomer, and a photopolymerization initiator as essential components, and these are mixed. Can be prepared.
 ブラックマトリックス部を形成する着色樹脂皮膜に、カラーフィルタの実生産で行われるベーキング等に耐え得る強靱性等が要求される場合には、前記感光性組成物を調製するに当たって、光重合性モノマーだけでなく、このアルカリ可溶性樹脂を併用することが不可欠である。アルカリ可溶性樹脂を併用する場合には、有機溶剤としては、それを溶解するものを使用するのが好ましい。 When the colored resin film forming the black matrix portion is required toughness that can withstand baking performed in the actual production of the color filter, only the photopolymerizable monomer is used in preparing the photosensitive composition. In addition, it is essential to use this alkali-soluble resin together. When an alkali-soluble resin is used in combination, it is preferable to use an organic solvent that dissolves it.
 前記感光性組成物の製造方法としては、本発明の着色組成物を事前に調製してから、そこに、アルカリ可溶性樹脂と、光重合性モノマーと、光重合開始剤を加えて前記感光性組成物とする方法が一般的である。 As the method for producing the photosensitive composition, the colored composition of the present invention is prepared in advance, and then an alkali-soluble resin, a photopolymerizable monomer, and a photopolymerization initiator are added to the photosensitive composition. The method of making a product is common.
 感光性組成物の調製に使用するアルカリ可溶性樹脂としては、カルボキシル基又は酸性を呈する水酸基を含む樹脂、例えば、ノボラック型フェノール樹脂、(メタ)アクリル酸アルキルエステル-(メタ)アクリル酸共重合体、スチレン-(メタ)アクリル酸共重合体、スチレン-マレイン酸共重合体等が挙げられる。尚、本発明において、(メタ)アクリルとの記載は、アクリルとメタクリルとを合わせた総称である。 Examples of the alkali-soluble resin used in the preparation of the photosensitive composition include a resin containing a carboxyl group or an acidic hydroxyl group, such as a novolak-type phenol resin, a (meth) acrylic acid alkyl ester- (meth) acrylic acid copolymer, Examples thereof include styrene- (meth) acrylic acid copolymers and styrene-maleic acid copolymers. In addition, in this invention, description with (meth) acryl is a general term which combined acrylic and methacryl.
 なかでも、硬化皮膜の耐熱性をより高めるためには、イミド構造、スチレン及び(メタ)アクリル酸の各重合単位を含有するアルカリ可溶性樹脂を用いることが好ましい。 Among these, in order to further improve the heat resistance of the cured film, it is preferable to use an alkali-soluble resin containing polymerized units of an imide structure, styrene, and (meth) acrylic acid.
 このアルカリ可溶性樹脂は、上記した、有機顔料とアンカー部位と結合して、相溶性部分が分散媒に伸長して分散体を構成する機能を有さないものであるが、一方で、アルカリに接触することで溶解する特徴を活かし、感光性組成物の未露光部分の除去の目的で専ら用いられる。 This alkali-soluble resin does not have the function of binding the organic pigment and the anchor part and having the compatible part extend into the dispersion medium to constitute the dispersion, but on the other hand, it is in contact with the alkali. This is used exclusively for the purpose of removing unexposed portions of the photosensitive composition, taking advantage of the characteristics of dissolution.
 光重合性モノマーとしては、例えば、1,6-ヘキサンジオールジ(メタ)アクリレート、エチレングリコールジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、トリエチレングリコールジ(メタ)アクリレート、ビス〔(メタ)アクリロキシエトキシ〕ビスフェノールA、3-メチルペンタンジオールジ(メタ)アクリレート等のような2官能モノマー、トリメチルロールプロパトントリ(メタ)アクリレート、ペンタエリスリトールトリ(メタ)アクリレート、トリス(2-ヒドロキシエチル)イソシアヌレートのトリ(メタ)アクリレート、ジペンタエリスリトールヘキサ(メタ)アクリレート、ジペンタエリスリトールペンタ(メタ)アクリレート、ジトリメチロールプロパンテトラ(メタ)アクリレート等の比較的分子量の小さな多官能モノマー、ポリエステルアクリレート、ポリウレタンアクリレート、ポリエーテルアクリレート等の様な比較的分子量の大きな多官能モノマーが挙げられる。上記同様に、(メタ)アクリレートとの記載は、アクリレートとメタクリレートとを合わせた総称である。 Examples of the photopolymerizable monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, bis [( (Meth) acryloxyethoxy] bisphenol A, bifunctional monomers such as 3-methylpentanediol di (meth) acrylate, trimethylol propaton tri (meth) acrylate, pentaerythritol tri (meth) acrylate, tris (2-hydroxy Ethyl) isocyanurate tri (meth) acrylate, dipentaerythritol hexa (meth) acrylate, dipentaerythritol penta (meth) acrylate, ditrimethylolpropane tetra (meth) acrylate Relatively high molecular weight of small polyfunctional monomer, polyester acrylate, polyurethane acrylate, a large multi-functional monomer having a relatively molecular weight such as polyether acrylate. Similarly to the above, the description of (meth) acrylate is a general term that combines acrylate and methacrylate.
 なかでも、硬化皮膜の耐熱性をより高めるためには、四官能~六官能の(メタ)アクリレートを用いることが好ましい。 Among these, in order to further increase the heat resistance of the cured film, it is preferable to use tetrafunctional to hexafunctional (meth) acrylate.
 光重合開始剤としては、例えば、アセトフェノン、ベンゾフェノン、ベンジルジメチルケタノール、ベンゾイルパーオキサイド、2-クロロチオキサントン、1,3-ビス(4’-アジドベンザル)-2-プロパン、1,3-ビス(4-アジドベンザル)-2-プロパン-2’-スルホン酸、4,4’-ジアジドスチルベン-2,2’-ジスルホン酸、エタノン,1-〔9-エチル-6-[2-メチル-4-(2,2-ジメチル-1,3-ジオキソラニル)メトキシベンゾイル]-9.H.-カルバゾール-3-イル〕-,1-(O-アセチルオキシム)等が挙げられる。 Examples of the photopolymerization initiator include acetophenone, benzophenone, benzyldimethylketanol, benzoyl peroxide, 2-chlorothioxanthone, 1,3-bis (4′-azidobenzal) -2-propane, 1,3-bis (4 -Azidobenzal) -2-propane-2'-sulfonic acid, 4,4'-diazidostilbene-2,2'-disulfonic acid, ethanone, 1- [9-ethyl-6- [2-methyl-4- ( 2,2-dimethyl-1,3-dioxolanyl) methoxybenzoyl] -9. H. -Carbazol-3-yl]-, 1- (O-acetyloxime) and the like.
 本発明の感光性組成物は、黒色であるため、硬化性に優れる光重合開始剤を用いることが好ましい。 Since the photosensitive composition of the present invention is black, it is preferable to use a photopolymerization initiator having excellent curability.
 このような特性の本発明の感光性組成物は、本発明の着色組成物100部当たり、アルカリ可溶性樹脂と光重合性モノマーの合計が3~20部、光重合性モノマー1部当たり0.05~3部の光重合開始剤と、必要に応じて、さらに上記した着色組成物の調製に用いた有機溶剤を添加し、均一となる様に攪拌分散してブラックマトリクス部を形成するための感光性組成物を得ることが出来る。 In the photosensitive composition of the present invention having such characteristics, the total of the alkali-soluble resin and the photopolymerizable monomer is 3 to 20 parts per 100 parts of the colored composition of the present invention, and 0.05 parts per part of the photopolymerizable monomer. Photosensitivity for forming a black matrix part by adding ~ 3 parts photopolymerization initiator and, if necessary, the organic solvent used for the preparation of the colored composition as described above, and stirring and dispersing so as to be uniform. Can be obtained.
 フォトリソグラフィー方式でブラックマトリクスを形成させるには、本発明の感光性組成物を低粘度で塗工性、作業性に優れたものとするために、少なくとも、質量換算で不揮発分は5~20%となるように調製することが好ましい。 In order to form a black matrix by a photolithography method, in order to make the photosensitive composition of the present invention low in viscosity and excellent in coatability and workability, at least the nonvolatile content is 5 to 20% in terms of mass. It is preferable to prepare such that
 現像液としては、公知慣用のアルカリ水溶液を使用することが出来る。特に前記感光性組成物には、アルカリ可溶性樹脂が含まれていることから、アルカリ水溶液での洗浄がブラックマトリクス部の形成に効果的である。本発明の感光性組成物の優れた耐熱性は、この様なアルカリ洗浄後に焼成を行なうカラーフィルタの製造方法において発揮される。 As the developer, a known and commonly used alkaline aqueous solution can be used. In particular, since the photosensitive composition contains an alkali-soluble resin, washing with an aqueous alkaline solution is effective for forming the black matrix portion. The excellent heat resistance of the photosensitive composition of the present invention is exhibited in a method for producing a color filter in which baking is performed after such alkali washing.
 顔料分散法のうち、フォトリソグラフィー法によるブラックマトリクス部の製造方法について詳記したが、本発明の感光性組成物を使用して調製されたブラックマトリックス部は、その他の電着法、転写法、ミセル電解法、PVED(Photo Voltaic Electro Deposition)法等の方法で形成して、カラーフィルタを製造してもよい。 Among the pigment dispersion methods, the method for producing the black matrix portion by the photolithography method has been described in detail, but the black matrix portion prepared using the photosensitive composition of the present invention has other electrodeposition methods, transfer methods, A color filter may be manufactured by forming a method such as a micellar electrolysis method or a PVED (Photo Voltaic Electro Deposition) method.
 カラーフィルタは、赤色有機顔料、緑色有機顔料、青色有機顔料ならびに本発明の着色組成物を使用して得た各色の感光性組成物を使用し、平行な一対の透明電極間に液晶材料を封入し、透明電極を不連続な微細区間に分割すると共に、この透明電極上のブラックマトリクスにより格子状に区分けされた微細区間のそれぞれに、赤(R)、緑(G)および青(B)のいずれか1色から選ばれたカラーフィルタ着色画素部を交互にパターン状に設ける方法、あるいは基板上にカラーフィルタ着色画素部を形成した後、透明電極を設ける様にすることで得ることが出来る。 The color filter uses a red organic pigment, a green organic pigment, a blue organic pigment, and a photosensitive composition of each color obtained by using the coloring composition of the present invention, and encapsulates a liquid crystal material between a pair of parallel transparent electrodes. The transparent electrode is divided into discontinuous fine sections, and red (R), green (G), and blue (B) are divided into fine sections divided in a lattice pattern by the black matrix on the transparent electrode. It can be obtained by providing a color filter coloring pixel portion selected from any one color alternately in a pattern, or by forming a color filter coloring pixel portion on a substrate and then providing a transparent electrode.
 本発明の感光性組成物から得られるブラックマトリクス部は、上記した各色有機顔料が黒色となる様に含まれたものであり、一見すると、各色の感光性組成物を混合して黒色感光性組成物を調製した場合と、同様のブラックマトリクスが得られるかの様に思われるが、本発明では、感光性組成物とする以前の段階である着色組成物の調製時に、予め、各色の有機顔料が混合される結果、より均一な混合が達成され、より優れた特性のブラックマトリクスが得られる。 The black matrix portion obtained from the photosensitive composition of the present invention contains the above-described organic pigments so as to be black. At first glance, the photosensitive compositions of the respective colors are mixed to form a black photosensitive composition. It seems that the same black matrix can be obtained as in the case of preparing the product, but in the present invention, in the preparation of the coloring composition, which is a stage before the photosensitive composition, the organic pigment of each color is prepared in advance. As a result, more uniform mixing is achieved, and a black matrix having better characteristics is obtained.
 以下、本発明を実施例に基づいて説明するが、本発明はこれによって限定されるものではない。なお、実施例及び比較例において特に断りがない場合は、「部」及び「%」は質量基準である。 Hereinafter, the present invention will be described based on examples, but the present invention is not limited thereto. In Examples and Comparative Examples, “part” and “%” are based on mass unless otherwise specified.
[評価方法]
 本明細書で用いる主な評価方法について詳述する。
(1)ピークトップ位置など
 評価対象の顔料をPMA(プロピレングリコールモノメチルエーテルアセテート)に分散後、PMAを用いて分散液を希釈し、分光光度計(U3900、株式会社日立ハイテクサイエンス製)で吸光スペクトルを測定し、ピークトップの位置、最大吸光度、365nmにおける吸光度、555nmにおける吸光度、700nmにおける吸光度を確認した。
(2)光学濃度(OD値)の測定
 ブラックマトリクスを作製し、分光光度計(U-3900)で365nmにおける吸光度、700nmにおける吸光度、各波長における透過率(I/I)を測定した。JIS Z 8701に従い、下記式よりブラックマトリクスのOD値を求めた。
Figure JPOXMLDOC01-appb-I000018
Y:輝度(明るさ)
k:定数
T:透過率
S:光源強度
y:等色関数(人間の目の感度)
OD=log10(最大輝度/Y)=log10(100/Y)
[Evaluation methods]
The main evaluation methods used in this specification will be described in detail.
(1) Peak top position, etc. After the pigment to be evaluated is dispersed in PMA (propylene glycol monomethyl ether acetate), the dispersion is diluted with PMA, and the absorption spectrum is obtained with a spectrophotometer (U3900, manufactured by Hitachi High-Tech Science Co., Ltd.). Were measured, and the peak top position, maximum absorbance, absorbance at 365 nm, absorbance at 555 nm, and absorbance at 700 nm were confirmed.
(2) Measurement of optical density (OD value) A black matrix was prepared, and absorbance at 365 nm, absorbance at 700 nm, and transmittance (I 0 / I) at each wavelength were measured with a spectrophotometer (U-3900). According to JIS Z 8701, the OD value of the black matrix was determined from the following formula.
Figure JPOXMLDOC01-appb-I000018
Y: Brightness (brightness)
k: constant T: transmittance S: light source intensity y: color matching function (sensitivity of the human eye)
OD = log 10 (maximum luminance / Y) = log 10 (100 / Y)
<顔料製造工程>
 C.I.ピグメントブルー25(特開昭51-97633号公報を基に合成)を塩化ナトリウム、ジエチレングリコールと混合し、ステンレス製ニーダー(株式会社井上製作所製)により湿式磨砕を行うことで、顔料A-1~A-5を作成した。顔料A-1~A-5の平均一次粒子径をSmartLab(株式会社リガク製)のUSAXS法を用いて測定した。(顔料A-1は36nm、顔料A-2は53nm、顔料A-3は94nm、顔料A-4は155nm、顔料A-5は189nmであった)
<Pigment production process>
C. I. Pigment Blue 25 (synthesized based on JP-A-51-97633) is mixed with sodium chloride and diethylene glycol, and subjected to wet grinding with a stainless steel kneader (manufactured by Inoue Seisakusho Co., Ltd.), pigment A-1 to A-5 was prepared. The average primary particle sizes of the pigments A-1 to A-5 were measured using the USAXS method of SmartLab (manufactured by Rigaku Corporation). (Pigment A-1 was 36 nm, Pigment A-2 was 53 nm, Pigment A-3 was 94 nm, Pigment A-4 was 155 nm, and Pigment A-5 was 189 nm)
実施例1
 得られた顔料A-1 0.4部、LPN-21116(BYK株式会社製、樹脂系分散剤)0.5部、プロピレングリコールモノメチルエーテルアセテート7.4部を混合し、0.2~0.3mmφのジルコニアビーズを加え、ペイントコンディショナー(東洋精機株式会社製)で2時間分散し、着色組成物(B-1)を得た。着色組成物(B-1)0.1部にプロピレングリコールモノメチルエーテルアセテート99.9部を添加し、評価用組成物(C-1)を調製した。
Example 1
0.4 parts of the pigment A-1 obtained, 0.5 parts of LPN-21116 (manufactured by BYK, resin-based dispersant), and 7.4 parts of propylene glycol monomethyl ether acetate are mixed, and 0.2 to 0. 3 mmφ zirconia beads were added and dispersed with a paint conditioner (manufactured by Toyo Seiki Co., Ltd.) for 2 hours to obtain a colored composition (B-1). To 0.1 part of the colored composition (B-1), 99.9 parts of propylene glycol monomethyl ether acetate was added to prepare an evaluation composition (C-1).
実施例2
 顔料A-1を顔料A-2に変えた以外は前記実施例1と同様な操作を行い、評価用組成物(C-2)を得た。
Example 2
An evaluation composition (C-2) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-2.
実施例3
 顔料A-1を顔料A-3に変えた以外は前記実施例1と同様な操作を行い、評価用組成物(C-3)を得た。
Example 3
An evaluation composition (C-3) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-3.
実施例4
 顔料A-1を顔料A-4に変えた以外は前記実施例1と同様な操作を行い、評価用組成物(C-4)を得た。
Example 4
An evaluation composition (C-4) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-4.
実施例5
 顔料A-1を顔料A-5に変えた以外は前記実施例1と同様な操作を行い、評価用組成物(C-5)を得た。
Example 5
An evaluation composition (C-5) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Pigment A-5.
比較例1
 顔料A-1をPaliogen Blue L6360 (BASF株式会社製C.I.ピグメントブルー60)に変えた以外は前記実施例1と同様な操作を行い、評価用組成物(C-6)を得た。
Comparative Example 1
An evaluation composition (C-6) was obtained in the same manner as in Example 1 except that Pigment A-1 was changed to Palogen Blue L6360 (CI Pigment Blue 60 manufactured by BASF Corporation).
比較例2
 顔料A-1をFastogen Blue EP-CF (DIC株式会社製C.I.ピグメントブルー15:6)に変えた以外は前記実施例1と同様な操作を行い、評価用組成物(C-7)を得た。
Comparative Example 2
An evaluation composition (C-7) was prepared in the same manner as in Example 1 except that Pigment A-1 was changed to Fastogen Blue EP-CF (CI Pigment Blue 15: 6, manufactured by DIC Corporation). Got.
<ピークトップ位置の確認>
 上記実施例1~5及び比較例1~2で得られた評価用組成物の吸光スペクトルを分光光度計(U3900、株式会社日立ハイテクサイエンス製)により測定した。結果を表1に示す。
<Confirmation of peak top position>
The absorption spectra of the evaluation compositions obtained in Examples 1 to 5 and Comparative Examples 1 and 2 were measured with a spectrophotometer (U3900, manufactured by Hitachi High-Tech Science Co., Ltd.). The results are shown in Table 1.
Figure JPOXMLDOC01-appb-T000019
Figure JPOXMLDOC01-appb-T000019
<着色組成物の作製工程>
実施例6
 顔料A-3(C.I.ピグメントブルー25、着色剤1)12.0部、Cromophtal Orange K 2960(BASF株式会社製、C.I.ピグメントオレンジ64、着色剤2)1.5部、Paliogen Red Violet K 5411(BASF株式会社製、C.I.ピグメントバイオレット29、着色剤3)1.5部、LPN-21116(BYK株式会社製、樹脂系分散剤)4.5部、プロピレングリコールモノメチルエーテルアセテート73.8部の混合物に0.2~0.3mmφのジルコニアビーズを加え、ペイントコンディショナーで2時間分散し、着色組成物(D-1)を得た。
<感光性樹脂組成物の作製工程>
着色組成物(D-1)100部、アルカリ可溶性樹脂としてメタクリル酸/こはく酸モノ(2-メタクリロイロキシエチル)/N-フェニルマレイミド/スチレン/ベンジルメタクリレート共重合体(共重合質量比=25/10/30/20/15、Mw=12,000、Mn=6,500)5部、光重合性モノマーとしてジペンタエリスリトールヘキサアクリレート10部、光重合開始剤としてエタノン,1-〔9-エチル-6-[2-メチル-4-(2,2-ジメチル-1,3-ジオキソラニル)メトキシベンゾイル]-9.H.-カルバゾール-3-イル〕-,1-(O-アセチルオキシム)を1部、および有機溶剤としてジプロピレングリコールジメチルエーテル25部、プロピレングリコールモノメチルエーテルアセテート25部、3-メトキシブチルアセテート75部、シクロヘキサノン50部を混合して、感光性樹脂組成物(E-1)を調製した。
<ブラックマトリクスの作製工程>
 10cm角のガラス基板(日本電気硝子製カラーフィルタ用ガラス板「OA-10」)を信越化学製シランカップリング剤「KBM-603」の1%希釈液に3分間浸漬し、10秒間水洗して、エアーガンで水切り後、110℃のオーブンで5分間乾燥した。このガラス基板上に、上記にて調製した感光性樹脂組成物(E-1)をスピンコーターを用いて塗布した。1分間真空乾燥後、ホットプレート上で90℃にて90秒間加熱乾燥し、乾燥膜厚約3.5μmの塗布膜を得た。その後、塗布膜側から、15μm幅の細線パターンマスクを介して画像露光を施すもの(パターン1)と、マスクを介さずに全面に露光を施すもの(パターン2)との2通りの露光を行った。露光条件は、それぞれ3kW高圧水銀灯を用い50mJ/cm2(i線基準)とした。次いで、0.05%の水酸化カリウムと0.08%のノニオン性界面活性剤(花王製「A-60」)を含有する水溶液よりなる現像液を用い、23℃において水圧0.15MPaのシャワー現像を施した後、純水にて現像を停止し、水洗スプレーにて洗浄しブラックマトリクス(F-1)を得た。なお、シャワー現像時間は、10~120秒間の間で調整し、未露光の塗布膜が溶解除去される時間の1.5倍とした。
<Process for producing colored composition>
Example 6
Pigment A-3 (CI Pigment Blue 25, Colorant 1) 12.0 parts, Chromophthal Orange K 2960 (manufactured by BASF Corporation, CI Pigment Orange 64, Colorant 2) 1.5 parts, Paliogen Red Violet K 5411 (BASF Corporation, CI Pigment Violet 29, Colorant 3) 1.5 parts, LPN-21116 (BYK Corporation, resin dispersant) 4.5 parts, propylene glycol monomethyl ether To a mixture of 73.8 parts of acetate, 0.2 to 0.3 mmφ zirconia beads were added and dispersed for 2 hours with a paint conditioner to obtain a colored composition (D-1).
<Production process of photosensitive resin composition>
100 parts of coloring composition (D-1), methacrylic acid / succinic acid mono (2-methacryloyloxyethyl) / N-phenylmaleimide / styrene / benzyl methacrylate copolymer (copolymerization mass ratio = 25 / 10/30/20/15, Mw = 12,000, Mn = 6,500) 5 parts, 10 parts of dipentaerythritol hexaacrylate as a photopolymerizable monomer, ethanone as a photopolymerization initiator, 1- [9-ethyl- 6- [2-Methyl-4- (2,2-dimethyl-1,3-dioxolanyl) methoxybenzoyl] -9. H. 1-carbazol-3-yl]-, 1- (O-acetyloxime) and 25 parts dipropylene glycol dimethyl ether, 25 parts propylene glycol monomethyl ether acetate, 75 parts 3-methoxybutyl acetate, 50 cyclohexane Parts were mixed to prepare a photosensitive resin composition (E-1).
<Black matrix production process>
A 10 cm square glass substrate (Nippon Electric Glass color filter glass plate “OA-10”) is immersed in a 1% dilution of a silane coupling agent “KBM-603” manufactured by Shin-Etsu Chemical Co., Ltd. for 3 minutes and washed with water for 10 seconds. After draining with an air gun, it was dried in an oven at 110 ° C. for 5 minutes. On the glass substrate, the photosensitive resin composition (E-1) prepared above was applied using a spin coater. After vacuum drying for 1 minute, it was heated and dried at 90 ° C. for 90 seconds on a hot plate to obtain a coating film having a dry film thickness of about 3.5 μm. Thereafter, from the coating film side, two types of exposure are performed: one that exposes an image through a fine line pattern mask with a width of 15 μm (pattern 1) and one that exposes the entire surface without passing through a mask (pattern 2). It was. The exposure conditions were 50 mJ / cm 2 (i-line standard) using a 3 kW high-pressure mercury lamp. Next, a shower composed of an aqueous solution containing 0.05% potassium hydroxide and 0.08% nonionic surfactant (“A-60” manufactured by Kao) was used, and a shower with a water pressure of 0.15 MPa at 23 ° C. After development, development was stopped with pure water and washed with water spray to obtain a black matrix (F-1). The shower development time was adjusted between 10 and 120 seconds, and was 1.5 times as long as the unexposed coating film was dissolved and removed.
実施例7
 実施例6の着色剤1を顔料A-3 7.5部に、着色剤2をCromophtal Orange K 2960 3.75部に、着色剤3をPaliogen Red Violet K 5411 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-2)を得た。
Example 7
Except for changing Colorant 1 of Example 6 to 7.5 parts of Pigment A-3, Colorant 2 to 3.75 parts of Chromophthal Orange K 2960, and Colorant 3 to 3.75 parts of Palogen Red Violet K 5411. The same operation as in Example 6 was performed to obtain a black matrix (F-2).
実施例8
 実施例6の着色剤1を顔料A-3 3.0部に、着色剤2をCromophtal Orange K 2960 6.0部に、着色剤3をPaliogen Red Violet K 5411 6.0部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-3)を得た。
Example 8
Except for changing Colorant 1 of Example 6 to 3.0 parts of Pigment A-3, Colorant 2 to 6.0 parts of Chrophtal Orange K 2960, and Colorant 3 to 6.0 parts of Palaiogen Red Violet K 5411. The same operation as in Example 6 was performed to obtain a black matrix (F-3).
実施例9
 実施例6の着色剤1を顔料A-3 12.0部に、着色剤2をPV Fast Orange H4GL01(Clariant社製、C.I.ピグメントオレンジ72) 1.5部に、着色剤3をPaliogen Red Violet K 5411 1.5部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-4)を得た。
Example 9
Colorant 1 of Example 6 is added to 12.0 parts of Pigment A-3, Colorant 2 is added to 1.5 parts of PV Fast Orange H4GL01 (Clariant, CI Pigment Orange 72), and Colorant 3 is added to Paliogen. A black matrix (F-4) was obtained in the same manner as in Example 6 except for changing to 1.5 parts of Red Violet K 5411.
実施例10
 実施例6の着色剤1を顔料A-3 7.5部に、着色剤2をPV Fast Orange H4GL01 3.75部に、着色剤3をPaliogen Red Violet K 5411 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-5)を得た。
Example 10
Except for changing Colorant 1 of Example 6 to 7.5 parts of Pigment A-3, Colorant 2 to 3.75 parts of PV Fast Orange H4GL01, and Colorant 3 to 3.75 parts of Palogen Red Violet K 5411. The same operation as in Example 6 was performed to obtain a black matrix (F-5).
実施例11
 実施例6の着色剤1を顔料A-3 3.0部に、着色剤2をPV Fast Orange H4GL01 6.0部に、着色剤3をPaliogen Red Violet K 5411 6.0部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-6)を得た。
Example 11
Except for changing Colorant 1 of Example 6 to 3.0 parts of Pigment A-3, Colorant 2 to 6.0 parts of PV Fast Orange H4GL01, and Colorant 3 to 6.0 parts of Palogen Red Violet K 5411 The same operation as in Example 6 was performed to obtain a black matrix (F-6).
実施例12
 実施例6の着色剤1を顔料A-3 12.0部に、着色剤2を化合物G 1.5部、着色剤3をCromophtal Orange K 2960 1.5部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-7)を得た。
Example 12
Example 6 above, except that Colorant 1 of Example 6 is changed to 12.0 parts of Pigment A-3, Colorant 2 is changed to 1.5 parts of Compound G, and Colorant 3 is changed to 1.5 parts of Chromophthal Orange K 2960. The black matrix (F-7) was obtained in the same manner as in Example 1.
Figure JPOXMLDOC01-appb-C000020
Figure JPOXMLDOC01-appb-C000020
 化合物Gは以下の操作を行い作製した。
 N-ブロモスクシンイミド 53部を温度が10℃以下の濃硫酸52500部に添加し、次いで特開平11-335575に記載の方法で合成した化合物H(下記構造)350部を添加し、室温で20時間撹拌した。次いでこれを氷525000部に注ぎ、沈殿物を得た。得られた沈殿物を濾過し、酸が検出されなくなるまで水で洗浄し、次いで30000部のエタノールで洗浄し、90℃で乾燥し、生成物I 390部を得た。
Compound G was prepared by the following operation.
53 parts of N-bromosuccinimide is added to 52500 parts of concentrated sulfuric acid having a temperature of 10 ° C. or less, and then 350 parts of compound H (the following structure) synthesized by the method described in JP-A-11-335575 is added, and the mixture is stirred at room temperature for 20 hours. Stir. Next, this was poured into 525,000 parts of ice to obtain a precipitate. The resulting precipitate was filtered, washed with water until no acid was detected, then washed with 30000 parts ethanol and dried at 90 ° C. to give 390 parts of product I.
Figure JPOXMLDOC01-appb-C000021
Figure JPOXMLDOC01-appb-C000021
 得られた生成物I 390部をN,N-ジメチルホルムアミド2000部に添加し、次いで4-ジメチルアミノピリジン100部、ジ-tert-ブチルジカーボネート800部(「tert」はターシャリーの意味で記載している)を添加し、室温で16時間攪拌した。次いでこれを水8000部に注ぎ、クロロホルム8000部で抽出し、クロロホルム層を減圧下で濃縮し生成物Jを得た。 390 parts of the obtained product I are added to 2000 parts of N, N-dimethylformamide, then 100 parts of 4-dimethylaminopyridine and 800 parts of di-tert-butyl dicarbonate (“tert” is described in the meaning of tertiary) And stirred at room temperature for 16 hours. This was then poured into 8000 parts of water, extracted with 8000 parts of chloroform, and the chloroform layer was concentrated under reduced pressure to obtain product J.
 得られた生成物Cを、シリカゲルカラムクロマトグラフィー(展開溶媒:クロロホルム/メタノール/ジメチルスルホキシド)で分離して得られた化合物Gを含有する溶液を濃縮し、N,N-ジメチルアセトアミド500部及びトルエン-4-スルホン酸一水和物50部を添加し、130℃で4時間攪拌し、沈殿物を得た。沈殿物を濾過し、N,N-ジメチルアセトアミド200部及びメタノール800部で洗浄し、90℃で乾燥し、化合物Gを得た(3.4部、収率 0.6%)。 The product C obtained by separating the obtained product C by silica gel column chromatography (developing solvent: chloroform / methanol / dimethyl sulfoxide) was concentrated, and 500 parts of N, N-dimethylacetamide and toluene were concentrated. 50 parts of -4-sulfonic acid monohydrate was added and stirred at 130 ° C. for 4 hours to obtain a precipitate. The precipitate was filtered, washed with 200 parts of N, N-dimethylacetamide and 800 parts of methanol, and dried at 90 ° C. to obtain Compound G (3.4 parts, yield 0.6%).
実施例13
 実施例6の着色剤1を顔料A-3 7.5部に、着色剤2を化合物G 3.75部に、着色剤3をCromophtal Orange K 2960 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-8)を得た。
Example 13
Example 6 with the exception that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-3, Colorant 2 to 3.75 parts of Compound G, and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-8).
実施例14
 実施例6の着色剤1を顔料A-3 3.0部に、着色剤2を化合物G 6.0部に、着色剤3をCromophtal Orange K 2960 6.0部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-9)を得た。
Example 14
Example 6 except that Colorant 1 of Example 6 was changed to 3.0 parts of Pigment A-3, Colorant 2 to 6.0 parts of Compound G, and Colorant 3 to 6.0 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-9).
実施例15
 実施例6の着色剤1を顔料A-3 1.5部に、着色剤2を化合物G 10.5部に、着色剤3をCromophtal Orange K 2960 3.0部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-10)を得た。
Example 15
Example 6 except that Colorant 1 of Example 6 was changed to 1.5 parts of Pigment A-3, Colorant 2 to 10.5 parts of Compound G, and Colorant 3 to 3.0 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-10).
実施例16
 実施例6の着色剤1を顔料A-1 7.5部に、着色剤2を化合物G 3.75部に、着色剤3をCromophtal Orange K 2960 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-11)を得た。
Example 16
Example 6 except that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-1, Colorant 2 to 3.75 parts of Compound G, and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-11).
実施例17
 実施例6の着色剤1を顔料A-2 7.5部に、着色剤2を化合物G 3.75部に、着色剤3をCromophtal Orange K 2960 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-12)を得た。
Example 17
Example 6 except that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-2, Colorant 2 was changed to 3.75 parts of Compound G, and Colorant 3 was changed to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-12).
実施例18
 実施例6の着色剤1を顔料A-4 7.5部に、着色剤2を化合物G 3.75部に、着色剤3をCromophtal Orange K 2960 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-13)を得た。
Example 18
Example 6 with the exception that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-4, Colorant 2 to 3.75 parts of Compound G, and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-13).
実施例19
 実施例6の着色剤1を顔料A-5 7.5部に、着色剤2を化合物G 3.75部に、着色剤3をCromophtal Orange K 2960 3.75部に変更した以外は前記実施例6と同様な操作を行い、ブラックマトリクス(F-14)を得た。
Example 19
Example 6 except that Colorant 1 of Example 6 was changed to 7.5 parts of Pigment A-5, Colorant 2 to 3.75 parts of Compound G and Colorant 3 to 3.75 parts of Chromophthal Orange K 2960. The same operation as in No. 6 was performed to obtain a black matrix (F-14).
比較例3
実施例6の着色剤1~3をFastogen Blue EP-CF 12.0部、Cromophtal Orange K 2960 1.5部、Paliogen Red Violet K 5411 1.5部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-15)を得た。
Comparative Example 3
The same as Example 6 except that Colorant 1 to 3 of Example 6 was changed to 12.0 parts Fastogen Blue EP-CF, 1.5 parts of Chromophthal Orange K 2960, 1.5 parts of Palaiogen Red Violet K 5411 Operation was performed to obtain a black matrix (F-15).
比較例4
 実施例6の着色剤1~3をFastogen Blue EP-CF 7.5部、Cromophtal Orange K 2960 3.75部、Paliogen Red Violet K 5411 3.75部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-16)を得た。
Comparative Example 4
The same as Example 6 except that the colorants 1 to 3 of Example 6 were changed to 7.5 parts of Fastogen Blue EP-CF, 3.75 parts of Chromophthal Orange K 2960, and 3.75 parts of Palaiogen Red Violet K 5411. Operation was performed to obtain a black matrix (F-16).
比較例5
 実施例6の着色剤1~3をFastogen Blue EP-CF 3.0部、Cromophtal Orange K 2960 6.0部、Paliogen Red Violet K 5411 6.0部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-17)を得た。
Comparative Example 5
The same as Example 6 except that the coloring agents 1 to 3 of Example 6 were changed to 3.0 parts Fastogen Blue EP-CF, 6.0 parts Cromot Orange K 2960, 6.0 parts Palaiogen Red Violet K 5411 Operation was performed to obtain a black matrix (F-17).
比較例6
 実施例6の着色剤1~3をFastogen Blue EP-CF 12.0部、 FASTOGEN Super Red ATY-TR(DIC株式会社製C.I.ピグメントレッド177) 3.0部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-18)を得た。
Comparative Example 6
The above procedure was repeated except that Colorant 1 to 3 of Example 6 was changed to 12.0 parts Fastogen Blue EP-CF and 3.0 parts FASTOGEN Super Red ATY-TR (DIC Pigment Red 177 manufactured by DIC Corporation). The same operation as in Example 6 was performed to obtain a black matrix (F-18).
比較例7
 実施例6の着色剤1~3をFastogen Blue EP-CF 7.5部、 FASTOGEN Super Red ATY-TR 7.5部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-19)を得た。
Comparative Example 7
The same procedure as in Example 6 was performed, except that Colorant 1 to 3 of Example 6 was changed to 7.5 parts Fastogen Blue EP-CF and 7.5 parts FASTOGEN Super Red ATY-TR. -19) was obtained.
比較例8
 実施例6の着色剤1~3をFastogen Blue EP-CF 3.0部、 FASTOGEN Super Red ATY-TR 12.0部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-20)を得た。
Comparative Example 8
The same procedure as in Example 6 was performed, except that the colorants 1 to 3 of Example 6 were changed to 3.0 parts Fastogen Blue EP-CF and 12.0 parts FASTOGEN Super Red ATY-TR. −20) was obtained.
比較例9
 実施例6の着色剤1~3をPaliogen Blue L6360 12.0部、Cromophtal Orange K 2960 1.5部、Paliogen Red Violet K 5411 1.5部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-21)を得た。
Comparative Example 9
The same operation as in Example 6 was performed except that Colorant 1 to 3 of Example 6 was changed to 1.5 parts of Palaiogen Blue L6360, 1.5 parts of Chromophthal Orange K 2960, 1.5 parts of Palaiogen Red Violet K 5411. As a result, a black matrix (F-21) was obtained.
比較例10
 実施例6の着色剤1~3をPaliogen Blue L6360 7.5部、Cromophtal Orange K 2960 3.75部、Paliogen Red Violet K 5411 3.75部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-22)を得た。
Comparative Example 10
The same operations as in Example 6 were performed except that Colorant 1 to 3 of Example 6 was changed to 7.5 parts of Palogen Blue L6360, 3.75 parts of Chromophthal Orange K 2960, and 3.75 parts of Palogen Red Violet K 5411. And a black matrix (F-22) was obtained.
比較例11
 実施例6の着色剤1~3をPaliogen Blue L6360 3.0部、Cromophtal Orange K 2960 6.0部、Paliogen Red Violet K 5411 6.0部に変更した以外は上記実施例6と同様な操作を行い、ブラックマトリクス(F-23)を得た。
Comparative Example 11
The same operations as in Example 6 were performed except that Colorant 1 to 3 of Example 6 was changed to 3.0 parts of Palogen Blue L6360, 6.0 parts of Chromophthal Orange K 2960, 6.0 parts of Paliogen Red Violet K 5411. And a black matrix (F-23) was obtained.
<評価>
 実施例6~19、比較例3~11で作製したブラックマトリクスのOD値、365nm吸光度及び700nm吸光度を、比較例4の値を100に換算して、下表に記載した。
<Evaluation>
The OD values, 365 nm absorbance, and 700 nm absorbance of the black matrices prepared in Examples 6 to 19 and Comparative Examples 3 to 11 are shown in the table below by converting the value of Comparative Example 4 to 100.
 本発明組成物から得られたブラックマトリクスは、365nmの吸光度が比較例4のブ
ラックマトリクスより低いにも関わらず、比較例3~11のブラックマトリクスに比べてOD値が顕著に向上した。
Although the black matrix obtained from the composition of the present invention had a lower absorbance at 365 nm than the black matrix of Comparative Example 4, the OD value was significantly improved as compared with the black matrices of Comparative Examples 3 to 11.
 また、PB-25を50%含む実施例7、10、13、16、17、18、19のブラックマトリクス同士を比較した場合、PB-25と化合物Gを併用した実施例13、16、17、18、19のブラックマトリクスは700nmの吸光度が大きく好ましい。さらに実施例13、16、17、18、19のブラックマトリクスの700nmの吸光度は比較例4対比200前後の値であれば同程度とみなすことができ、この場合、700nmの吸光度の大小より、OD値の大小が重要特性となる。この観点から、平均一次粒子径が50nm~160nmの範囲にある顔料A-2、A-3、A-4をそれぞれ含む実施例13、17、18のブラックマトリクスは700nmの吸光度が大きく、かつ、高いOD値を有しており特に優れた性能を示すことがわかる。 In addition, when the black matrices of Examples 7, 10, 13, 16, 17, 18, and 19 containing 50% PB-25 were compared, Examples 13, 16, 17, and the combination of PB-25 and Compound G were used. The 18 and 19 black matrices are preferred because of their large absorbance at 700 nm. Furthermore, the absorbance at 700 nm of the black matrixes of Examples 13, 16, 17, 18, and 19 can be regarded as the same as long as the value is around 200 as compared with Comparative Example 4. In this case, the OD is larger than the absorbance at 700 nm. The magnitude of the value is an important characteristic. From this viewpoint, the black matrices of Examples 13, 17, and 18 containing pigments A-2, A-3, and A-4 having an average primary particle diameter in the range of 50 nm to 160 nm, respectively, have a large absorbance at 700 nm, and It can be seen that it has a high OD value and exhibits particularly excellent performance.
Figure JPOXMLDOC01-appb-T000022
Figure JPOXMLDOC01-appb-T000022

Claims (5)

  1. 2以上の有機顔料を含有してなる遮光性顔料組成物であって、
    有機顔料として、少なくとも、下記一般式(1):
    Figure JPOXMLDOC01-appb-C000001
    (式(1)中、R~Rはそれぞれ独立に、水素原子、ハロゲン原子、ニトロ基、置換基を有していてもよいアルコキシ基、置換基を有していてもよいアミノ基、置換基を有していてもよいスルホニル基、置換基を有していてもよいカルボキシル基、又は置換基を有していてもよい一価の炭化水素基である)で表される有機顔料(A)を含有することを特徴とする遮光性顔料組成物。
    A light-shielding pigment composition comprising two or more organic pigments,
    As an organic pigment, at least the following general formula (1):
    Figure JPOXMLDOC01-appb-C000001
    (In the formula (1), R 1 to R 6 are each independently a hydrogen atom, a halogen atom, a nitro group, an alkoxy group which may have a substituent, an amino group which may have a substituent, An organic pigment represented by a sulfonyl group which may have a substituent, a carboxyl group which may have a substituent, or a monovalent hydrocarbon group which may have a substituent. A light-shielding pigment composition comprising A).
  2. 前記有機顔料(A)が、C.I.ピグメントブルー25又はC.I.ピグメントブルー26であることを特徴とする請求項1に記載の遮光性顔料組成物。 The organic pigment (A) is C.I. I. Pigment blue 25 or C.I. I. The light-shielding pigment composition according to claim 1, which is CI Pigment Blue 26.
  3. 前記有機顔料(A)が、下記条件を満たす有機顔料であることを特徴とする請求項1又は2に記載の遮光性顔料組成物。
    (条件:可視光領域(380nm~780nm)における吸光度が波長580nm~780nmにおいて最大となり、365nmにおける吸光度が最大吸光度の50%以下、555nm及び700nmにおける吸光度が最大吸光度の50%以上である。)
    The light-shielding pigment composition according to claim 1 or 2, wherein the organic pigment (A) is an organic pigment that satisfies the following conditions.
    (Condition: Absorbance in the visible light region (380 nm to 780 nm) is maximum at a wavelength of 580 nm to 780 nm, and absorbance at 365 nm is 50% or less of the maximum absorbance, and absorbance at 555 nm and 700 nm is 50% or more of the maximum absorbance.)
  4. さらに、下記一般式(2)および一般式(3)で表される化学構造を含むベンズイミダゾロン系顔料、下記一般式(4)で表される化学構造を含むベンズイミダゾロンジオキサジン系顔料のうち、一方又は両方を含有することを特徴とする請求項1~3いずれか一項に記載の遮光性顔料組成物。
    Figure JPOXMLDOC01-appb-C000002
    (式(2)中、R~Rは、それぞれ水素原子又はハロゲン原子又は置換基を有していてもよい1価の炭化水素基を示す。)
    Figure JPOXMLDOC01-appb-C000003
    Figure JPOXMLDOC01-appb-C000004
    (式(4)中、X、X、X、X、X及びXはそれぞれ独立に水素原子又はハロゲン原子を示し;X、X、X、Xの内、1つ以上はハロゲン原子であり;R、R、R及びRはそれぞれ独立に水素原子又は置換基を有していてもよい一価の炭化水素基を示す)
    Further, among benzimidazolone pigments having chemical structures represented by the following general formulas (2) and (3), and benzimidazolone dioxazine pigments having chemical structures represented by the following general formula (4) The light-shielding pigment composition according to any one of claims 1 to 3, which contains one or both of them.
    Figure JPOXMLDOC01-appb-C000002
    (In the formula (2), R 1 to R 3 each represent a hydrogen atom, a halogen atom or a monovalent hydrocarbon group which may have a substituent.)
    Figure JPOXMLDOC01-appb-C000003
    Figure JPOXMLDOC01-appb-C000004
    (In the formula (4), X 1 , X 2 , X 3 , X 4 , X 5 and X 6 each independently represent a hydrogen atom or a halogen atom; among X 3 , X 4 , X 5 and X 6 , One or more are halogen atoms; R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom or a monovalent hydrocarbon group optionally having a substituent)
  5. 請求項1~4いずれか一項に記載の遮光性顔料組成物を含有するディスプレイ用遮光性部材。 A light-shielding member for display, comprising the light-shielding pigment composition according to any one of claims 1 to 4.
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