Colored composition, film, optical filter, solid-state imaging element, and image display device

Abstract

This colored composition contains a coloring agent and a resin, the coloring agent containing at least one blue pigment selected from cobalt phthalocyanine blue pigment and zinc phthalocyanine blue pigment. The present invention is a film, an optical filter, a solid-state imaging device, and an image display device using the aforementioned colored composition.

Description

Coloring composition, film, optical filter, solid-state imaging device and image display device

[0001] The present invention relates to a coloring composition containing a phthalocyanine blue pigment. The present invention also relates to a film, an optical filter, a solid-state imaging device, and an image display device using the coloring composition.

[0002] In recent years, the widespread use of digital cameras and camera-equipped mobile phones has led to a significant increase in demand for solid-state imaging devices such as charge-coupled device (CCD) image sensors. Color filters are used as key devices in displays and optical elements. Color filters typically have pixels of the three primary colors, red, green, and blue, and serve to separate transmitted light into the three primary colors.

[0003] Each color pixel of a color filter is produced using a coloring composition containing a colorant. For example, a coloring composition for forming a blue pixel contains a copper phthalocyanine blue pigment such as Color Index Pigment Blue 15:6 as the colorant.

[0004] Patent Document 1 describes a coloring composition containing a colorant containing Color Index Pigment Blue 15:6, a resin, a photopolymerization initiator, and a polymerizable compound.

[0005] Japanese Patent Application Laid-Open No. 2022-171679

[0006] To improve the sensitivity of image sensors, further thinning of optical filters such as color filters used in image sensors is required. One method to achieve thinning while satisfying the desired spectral characteristics is to increase the concentration of colorants in the film, but the improvement of the colorant concentration in the film is reaching its limit.

[0007] In Patent Document 1, Color Index Pigment Blue 15:6 is used as the blue pigment, but with the composition disclosed in Patent Document 1, it was difficult to achieve a thin film thickness that meets the standards currently required while also satisfying the desired spectral characteristics.

[0008] Therefore, an object of the present invention is to provide a coloring composition capable of forming a film having excellent spectral characteristics. Another object of the present invention is to provide a film, an optical filter, a solid-state imaging device, and an image display device using the coloring composition.

[0009] The present inventors have conducted extensive research into phthalocyanine blue pigments and have found that cobalt phthalocyanine blue pigments and zinc phthalocyanine blue pigments have high absorption intensities in the wavelength range of 600 to 700 nm and have a high blue color value, leading to the completion of the present invention.

[0010] <1> A coloring composition comprising a colorant and a resin, wherein the colorant comprises at least one blue pigment selected from a cobalt phthalocyanine blue pigment and a zinc phthalocyanine blue pigment. <2> The coloring composition according to <1>, wherein the blue pigment has an absorption intensity at a wavelength of 400 nm of less than 0.3 when the absorption intensity at a wavelength of 400 nm to 700 nm is normalized to the absorption intensity at the maximum absorption wavelength in a wavelength range of 550 to 700 nm. <3> The coloring composition according to <1> or <2>, wherein the blue pigment comprises an unsubstituted zinc phthalocyanine blue pigment. <4> The coloring composition according to any one of <1> to <3>, wherein the average primary particle diameter of the blue pigment is 3 to 200 nm. <5> The coloring composition according to any one of <1> to <4>, wherein the content of the blue pigment in the colorant is 40 mass% or more. <6> The coloring composition according to any one of <1> to <5>, wherein the colorant further comprises a copper phthalocyanine blue pigment. <7> The coloring composition according to any one of <1> to <6>, wherein the colorant further comprises an oxazine compound. <8> The coloring composition according to any one of <1> to <7>, wherein the colorant further comprises at least one selected from a xanthene dye and a pyrromethene dye. <9> The coloring composition according to any one of <1> to <8>, wherein a content of the colorant in the total solid content of the coloring composition is 50 mass% or more. <10> The coloring composition according to any one of <1> to <9>, further comprising a polymerizable compound and a photopolymerization initiator. <11> A film obtained using the coloring composition according to any one of <1> to <10>. <12> An optical filter having the film according to <11>. <13> A solid-state imaging device having the film according to <11>. <14> An image display device having the film according to <11>.

[0011] The present invention can provide a coloring composition capable of forming a film having excellent spectral characteristics. The present invention can also provide a film, an optical filter, a solid-state imaging device, and an image display device.

[0012] The present invention will be described in detail below. In this specification, the term "to" is used to mean that the numerical values ​​before and after the term are included as the lower and upper limits. In the description of groups (atomic groups) in this specification, a term without specifying whether it is substituted or unsubstituted encompasses both unsubstituted groups (atomic groups) and substituted groups (atomic groups). For example, the term "alkyl group" encompasses not only unsubstituted alkyl groups (unsubstituted alkyl groups) but also substituted alkyl groups (substituted alkyl groups). In this specification, unless otherwise specified, "exposure" includes not only exposure using light but also drawing using particle beams such as electron beams and ion beams. Examples of light used for exposure include the bright line spectrum of a mercury lamp, far ultraviolet light typified by excimer lasers, extreme ultraviolet light (EUV light), X-rays, electron beams, and other actinic rays or radiation. As used herein, "(meth)acrylate" refers to either or both of acrylate and methacrylate, "(meth)acrylic" refers to either or both of acrylic and methacrylic, and "(meth)acryloyl" refers to either or both of acryloyl and methacryloyl. In the structural formulae herein, Me refers to a methyl group, Et refers to an ethyl group, Bu refers to a butyl group, and Ph refers to a phenyl group. As used herein, the weight-average molecular weight and number-average molecular weight are polystyrene-equivalent values ​​measured by GPC (gel permeation chromatography). As used herein, the term "total solids" refers to the total mass of all components of a composition excluding the solvent. As used herein, the term "pigment" refers to a compound that is difficult to dissolve in a solvent. As used herein, the term "process" refers not only to an independent process, but also to a process that cannot be clearly distinguished from other processes, as long as the intended effect of the process is achieved.

[0013] <Coloring Composition> The coloring composition of the present invention is a coloring composition containing a colorant and a resin, wherein the colorant contains at least one blue pigment selected from a cobalt phthalocyanine blue pigment and a zinc phthalocyanine blue pigment.

[0014] Cobalt phthalocyanine blue pigment and zinc phthalocyanine blue pigment are blue pigments that have high absorption intensities in the wavelength range of 600 to 700 nm and have a high blue color value. Therefore, the coloring composition of the present invention containing such blue pigments can form a film with excellent spectral properties. In particular, it can form a film with high shielding properties in the wavelength range of 600 to 700 nm.

[0015] The coloring composition of the present invention can be preferably used for photolithography. When the coloring composition of the present invention is used for photolithography, it is preferable that the coloring composition of the present invention further contains a photopolymerization initiator and a polymerizable compound. By forming pixels using the coloring composition of the present invention by photolithography, pixels with excellent rectangularity can be formed. In particular, remarkable effects are exhibited when pixels are formed by exposure to light with a wavelength of 300 nm or less, such as the KfF line. The reason for such effects is presumed to be as follows. Cobalt phthalocyanine blue pigments and zinc phthalocyanine blue pigments have a lower absorption intensity of light with a wavelength of 300 nm or less, such as the KfF line, than copper phthalocyanine blue pigments, which have been used as conventional blue pigments. Therefore, it is presumed that exposure light can be sufficiently irradiated to the bottom of the film (substrate side) during exposure. Furthermore, it is presumed that cobalt phthalocyanine blue pigments and zinc phthalocyanine blue pigments are prone to exciton transfer or electron transfer from the excited form of these pigments to the photopolymerization initiator during exposure, which allows for efficient generation of active species such as radicals from the photopolymerization initiator. It is therefore presumed that the exposed portions can be sufficiently cured during exposure, resulting in the formation of pixels with excellent rectangularity.

[0016] The coloring composition of the present invention can be preferably used as a coloring composition for an optical filter. Examples of optical filters include color filters and infrared transmission filters. That is, the coloring composition of the present invention is preferably used as a coloring composition for a color filter or an infrared transmission filter, and is more preferably used as a coloring composition for a color filter. More specifically, it can be preferably used as a coloring composition for forming pixels of a color filter or a coloring composition for forming an infrared transmission filter, and is particularly preferably used as a coloring composition for forming blue pixels of a color filter.

[0017] When the coloring composition of the present invention is used to form a film having a thickness of 0.3 to 0.7 μm, the transmittance of the film in the thickness direction at a wavelength of 400 nm is preferably 45% or more, more preferably 50% or more, and even more preferably 55% or more. The transmittance of the film at a wavelength of 450 nm is preferably 70% or more, more preferably 75% or more, and even more preferably 80% or more. The minimum transmittance of the film in the wavelength range of 400 to 500 nm is preferably 30% or more, more preferably 35% or more, and even more preferably 40% or more. The maximum transmittance of the film in the wavelength range of 600 to 700 nm is preferably less than 5%, and even more preferably less than 3%. A film having such spectral characteristics can be preferably used as a blue pixel in a color filter.

[0018] The film used for measuring the transmittance is preferably a film obtained by applying a coloring composition to a glass substrate by a method such as spin coating, drying the composition at 100°C for 2 minutes using a hot plate or the like, heating the composition at 200°C for 5 minutes using a hot plate or the like, and allowing the composition to cool to room temperature. The transmittance can be measured using a conventionally known spectrophotometer.

[0019] Hereinafter, each component used in the colored composition of the present invention will be described.

[0020] <<Colorant>> (Specific Blue Pigment) The coloring composition of the present invention contains a colorant. The colorant contained in the coloring composition of the present invention includes at least one blue pigment selected from a cobalt phthalocyanine blue pigment and a zinc phthalocyanine blue pigment. The cobalt phthalocyanine blue pigment is a phthalocyanine blue pigment having a cobalt atom as the central atom, and the zinc phthalocyanine blue pigment is a phthalocyanine blue pigment having a zinc atom as the central atom. The blue pigment is a pigment that has low absorption intensity in the wavelength range of 400 to 500 nm and high absorption intensity in the wavelength range of 500 to 700 nm. Hereinafter, the cobalt phthalocyanine blue pigment and the zinc phthalocyanine blue pigment are collectively referred to as the specific blue pigment.

[0021] When the absorption intensity at the wavelength of 400 to 700 nm of the specific blue pigment is normalized to the absorption intensity at the maximum absorption wavelength in the wavelength range of 550 to 700 nm, the absorption intensity at a wavelength of 400 nm is preferably less than 0.3, more preferably 0.25 or less, and even more preferably 0.2 or less. Furthermore, when normalized, the maximum absorption intensity in the wavelength range of 400 to 500 nm is preferably 0.3 or less, more preferably 0.25 or less, and even more preferably 0.2 or less. Furthermore, when normalized, the wavelength at which the absorption intensity is 0.5 is preferably in the wavelength range of 600 to 650 nm, more preferably in the wavelength range of 585 to 675 nm, and even more preferably in the wavelength range of 570 to 700 nm. Specific compounds having such spectral characteristics can be preferably used as blue colorants.

[0022] The average primary particle diameter of the specific blue pigment is preferably 3 to 200 nm. The lower limit is preferably 5 nm or more, more preferably 10 nm or more. The upper limit is preferably 150 nm or less, more preferably 100 nm or less. In this specification, the primary particle diameter of the pigment can be determined from a photograph obtained by observing the primary particles of the pigment with a transmission electron microscope. Specifically, the projected area of ​​the primary particles of the pigment is determined, and the corresponding circle-equivalent diameter is calculated as the primary particle diameter of the pigment. In addition, the average primary particle diameter in the present invention is the arithmetic mean value of the primary particle diameters of 400 primary particles of the pigment. Furthermore, primary particles of the pigment refer to independent particles that are not aggregated.

[0023] The specific blue pigment is preferably a compound represented by formula (1).

[0024] In formula (1), M １ represents a zinc atom or a cobalt atom; X １ ~X ８ are each independently ═N—, ═CR Ｘ１ - or =CH-, R Ｘ１ represents a substituent, Y １ ~Y ８ are each independently ═N—, ═CR Ｙ１ - or =CH-, R Ｙ１ represents a substituent.

[0025] Formula (1) represents a zinc atom or a cobalt atom, and is preferably a zinc atom because this can further enhance the light-blocking properties in the wavelength range of 600 to 700 nm and further enable the formation of pixels with superior rectangularity.

[0026] R Ｘ１ and R Ｙ１ Examples of the substituent represented by include the groups exemplified as the substituent T described below, and are preferably a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbamoyl group, or a sulfamoyl group, and more preferably a halogen atom or an alkyl group.

[0027] Examples of the halogen atom include a fluorine atom, a chlorine atom, and a bromine atom, with a fluorine atom being preferred. The alkyl group preferably has 1 to 10 carbon atoms, more preferably 1 to 5, and even more preferably 1 to 3. The alkyl group may have a substituent. Examples of the substituent include a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbamoyl group, and a sulfamoyl group. The aryl group preferably has 6 to 20 carbon atoms, more preferably 6 to 12, and even more preferably 6. The aryl group may have a substituent. Examples of the substituent include a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbamoyl group, and a sulfamoyl group. The alkoxy group, alkylthio group, alkylsulfonyl group, sulfamoyl group, and carbamoyl group preferably have 1 to 10 carbon atoms, more preferably 1 to 5 carbon atoms, and even more preferably 1 to 3 carbon atoms. These groups may further have a substituent. Examples of the substituent include a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbamoyl group, and a sulfamoyl group. The acyl group, alkoxycarbonyl group, and acyloxy group preferably have 2 to 10 carbon atoms, more preferably 2 to 5 carbon atoms, and even more preferably 2 to 3 carbon atoms. These groups may further have a substituent. Examples of the substituent include a halogen atom, an alkyl group, an aryl group, an alkoxy group, an alkylthio group, an alkylsulfonyl group, an acyl group, an alkoxycarbonyl group, an acyloxy group, a carbamoyl group, and a sulfamoyl group.

[0028] X in formula (1) １ ~X ８ are each independently =CR Ｘ１ It is preferably - or =CH-, and more preferably =CH-.

[0029] Y in formula (1) １ ~Y ８ are each independently =CR Ｙ１ It is preferably - or =CH-, and more preferably =CH-.

[0030] Examples of the substituent T include the following groups: a halogen atom (for example, a fluorine atom, a chlorine atom, a bromine atom, or an iodine atom), an alkyl group (preferably an alkyl group having 1 to 30 carbon atoms), an alkenyl group (preferably an alkenyl group having 2 to 30 carbon atoms), an alkynyl group (preferably an alkynyl group having 2 to 30 carbon atoms), an aryl group (preferably an aryl group having 6 to 30 carbon atoms), a heteroaryl group (preferably a heteroaryl group having 1 to 30 carbon atoms), an amino group (preferably an amino group having 0 to 30 carbon atoms), an alkoxy group (preferably an alkoxy group having 1 to 30 carbon atoms), an aryloxy group (preferably or an aryloxy group having 6 to 30 carbon atoms), a heteroaryloxy group (preferably a heteroaryloxy group having 1 to 30 carbon atoms), an acyl group (preferably an acyl group having 2 to 30 carbon atoms), an alkoxycarbonyl group (preferably an alkoxycarbonyl group having 2 to 30 carbon atoms), an aryloxycarbonyl group (preferably an aryloxycarbonyl group having 7 to 30 carbon atoms), a heteroaryloxycarbonyl group (preferably a heteroaryloxycarbonyl group having 2 to 30 carbon atoms), an acyloxy group (preferably an acyloxy group having 2 to 30 carbon atoms), group), acylamino group (preferably an acylamino group having 2 to 30 carbon atoms), aminocarbonylamino group (preferably an aminocarbonylamino group having 2 to 30 carbon atoms), alkoxycarbonylamino group (preferably an alkoxycarbonylamino group having 2 to 30 carbon atoms), aryloxycarbonylamino group (preferably an aryloxycarbonylamino group having 7 to 30 carbon atoms), sulfamoyl group (preferably a sulfamoyl group having 0 to 30 carbon atoms), sulfamoylamino group (preferably a sulfamoylamino group having 0 to 30 carbon atoms), carboxylic acid a bamoyl group (preferably a carbamoyl group having 1 to 30 carbon atoms), an alkylthio group (preferably an alkylthio group having 1 to 30 carbon atoms), an arylthio group (preferably an arylthio group having 6 to 30 carbon atoms), a heteroarylthio group (preferably a heteroarylthio group having 1 to 30 carbon atoms), an alkylsulfonyl group (preferably an alkylsulfonyl group having 1 to 30 carbon atoms), an alkylsulfonylamino group (preferably an alkylsulfonylamino group having 1 to 30 carbon atoms), an arylsulfonyl group (preferably an arylsulfonyl group having 6 to 30 carbon atoms),an arylsulfonylamino group (preferably an arylsulfonylamino group having 6 to 30 carbon atoms), a heteroarylsulfonyl group (preferably a heteroarylsulfonyl group having 1 to 30 carbon atoms), a heteroarylsulfonylamino group (preferably a heteroarylsulfonylamino group having 1 to 30 carbon atoms), an alkylsulfinyl group (preferably an alkylsulfinyl group having 1 to 30 carbon atoms), an arylsulfinyl group (preferably an arylsulfinyl group having 6 to 30 carbon atoms), a heteroarylsulfinyl group (preferably a heteroarylsulfinyl group having 1 to 30 carbon atoms), a ureido group (preferably a ureido group having 1 to 30 carbon atoms), a hydroxy group, a nitro group, a carboxy group, a sulfo group, a phosphoric acid group, a carboxylic acid amide group, a sulfonic acid amide group, an imido group, a phosphino group, a mercapto group, a cyano group, an alkylsulfino group, an arylsulfino group, an arylazo group, a heteroarylazo group, a phosphinyl group, a phosphinyloxy group, a phosphinylamino group, a silyl group, a hydrazino group, or an imino group. When these groups are groups that can be further substituted, they may further have a substituent. Examples of the further substituent include the groups described above for the substituent T.

[0031] Specific examples of the compound represented by formula (1) include the compounds shown below: In the formula, M represents a zinc atom or a cobalt atom.

[0032]

[0033] The specific blue pigment preferably contains a zinc phthalocyanine blue pigment, and more preferably contains an unsubstituted zinc phthalocyanine blue pigment. According to such an embodiment, a film with higher light-shielding properties in the wavelength range of 600 to 700 nm can be formed. Furthermore, when pixels are formed by patterning using a photolithography method, pixels with better rectangularity can be formed. The unsubstituted zinc phthalocyanine is an unsubstituted phthalocyanine having a zinc atom as the central atom, and is a phthalocyanine having a zinc atom as the central atom, and is a phthalocyanine having a zinc atom as the central atom, and is a phthalocyanine having a zinc atom as the central atom, and is a phthalocyanine having a zinc atom as the central atom, and is more preferably a zinc ... １ is a zinc atom, and X １ ~X ８ , and Y １ ~Y ８is preferably a compound in which =CH-.

[0034] (Other Colorants) The colorant contained in the coloring composition of the present invention may further contain a colorant other than the specific blue pigment described above (hereinafter also referred to as other colorants). Examples of the other colorants to be used in combination include green colorants, red colorants, yellow colorants, purple colorants, blue colorants, orange colorants, etc., and the other colorants are preferably at least one selected from purple colorants and blue colorants, and more preferably at least one selected from blue colorants and purple colorants.

[0035] The other colorant may be a pigment or a dye. The pigment may be either an inorganic pigment or an organic pigment, but is preferably an organic pigment from the viewpoints of a wide range of color variations, ease of dispersion, safety, etc.

[0036] The average primary particle diameter of the pigment is preferably 1 to 200 nm. The lower limit is preferably 5 nm or more, more preferably 10 nm or more. The upper limit is preferably 180 nm or less, more preferably 150 nm or less, and even more preferably 100 nm or less. In this specification, the primary particle diameter of the pigment can be determined from a photograph obtained by observing the primary particles of the pigment with a transmission electron microscope. Specifically, the projected area of ​​the primary particles of the pigment is determined, and the corresponding circle-equivalent diameter is calculated as the primary particle diameter of the pigment. In addition, the average primary particle diameter in the present invention is the arithmetic mean value of the primary particle diameters of 400 primary particles of the pigment. Furthermore, primary particles of the pigment refer to independent particles that are not aggregated.

[0037] The crystallite size of the pigment, determined from the half-width of a peak derived from any crystal plane in an X-ray diffraction spectrum obtained using CuKα radiation as an X-ray source, is preferably 0.1 to 100 nm, more preferably 0.5 to 50 nm, even more preferably 1 to 30 nm, and particularly preferably 5 to 25 nm.

[0038] The specific surface area of ​​the pigment is 1 to 300 m ２ / g. The lower limit is 10 m ２ / g or more, and ２ / g or more is more preferable. ２ / g or less, and ２ The value of the specific surface area can be determined according to the BET (Brunauer, Emmett and Teller) method in accordance with DIN 66131: Determination of the specific surface area of ​​solids by gas adsorption.

[0039] Examples of red colorants include diketopyrrolopyrrole compounds, anthraquinone compounds, azo compounds, naphthol compounds, azomethine compounds, xanthene compounds, quinacridone compounds, perylene compounds, and thioindigo compounds.

[0040] Specific examples of red colorants include C.I. (Color Index) Pigment Red 1, 2, 3, 4, 5, 6, 7, 9, 10, 14, 17, 22, 23, 31, 38, 41, 48:1, 48:2, 48:3, 48:4, 49, 49:1, 49:2, 52:1, 52:2, 53:1, 57:1, 60:1, 63:1, 66, 67, 81:1, 81:2, 81:3, 83, 88, 90, 105, 112, 119, 122, 123, 144, 146, 149, Examples of red pigments include 150,155,166,168,169,170,171,172,175,176,177,178,179,184,185,187,188,190,200,202,206,207,208,209,210,216,220,224,226,242,246,254,255,264,269,270,272,279,291,294,295,296,297. In addition, as a red colorant, a compound described in paragraph 0034 of WO 2022 / 085485, or a brominated diketopyrrolopyrrole compound described in JP-A-2020-085947 can also be used.

[0041] Examples of green colorants include phthalocyanine compounds and squarylium compounds, with phthalocyanine compounds being preferred.

[0042] Specific examples of green colorants include green pigments such as C.I. Pigment Green 7, 10, 36, 37, 58, 59, 62, 63, 64, 65, and 66. Furthermore, halogenated zinc phthalocyanine pigments having an average of 10 to 14 halogen atoms, an average of 8 to 12 bromine atoms, and an average of 2 to 5 chlorine atoms per molecule can also be used as green colorants. Specific examples include the compounds described in WO 2015 / 118720. Furthermore, compounds described in paragraph 0029 of WO 2022 / 085485, aluminum phthalocyanine compounds described in JP-A 2020-070426, and diarylmethane compounds described in JP-A 2020-504758 can also be used as green colorants.

[0043] Examples of orange colorants include diketopyrrolopyrrole compounds and azo compounds, and diketopyrrolopyrrole compounds are preferred.Specific examples of orange colorants include orange pigments such as C.I. Pigment Orange 2,5,13,16,17:1,31,34,36,38,43,46,48,49,51,52,55,59,60,61,62,64,71,73,81, etc.Preferably, the orange colorant is at least one selected from C.I. Pigment Orange 71, C.I. Pigment Orange 73, and C.I. Pigment Orange 81.

[0044] Examples of yellow colorants include azo compounds, azomethine compounds, isoindoline compounds, pteridine compounds, quinophthalone compounds, and perylene compounds. Specific examples of yellow colorants include C.I. Pigment Yellow 1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 15, 16, 17, 18, 20, 24, 31, 32, 34, 35, 35:1, 36, 36:1, 37, 37:1, 40, 42, 43, 53, 55, 60, 61, 62, 63, 65, 73, 74, 77, 81, 83, 86, 93, 94, 95, 97, 98, 100, 101, 104, 106, 108, 109, 110, 113, 114, 115, 116, 117, 118, 119, 120, 123, 125 , 126, 127, 128, 129, 137, 138, 139, 147, 148, 150, 151, 152, 153, 154, 155, 156, 161, 162, 164, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 179, 180, 181, 182, 185, 187, 188, 193, 194, 199, 213, 214, 215, 228, 231, 232, 233, 234, 235, 236 and the like.

[0045] As the yellow colorant, an azobarbituric acid nickel complex having the following structure can also be used.

[0046] As the yellow colorant, the compounds described in paragraphs 0031 to 0033 of WO 2022 / 085485, the methine dyes described in JP-A 2019-073695, and the methine dyes described in JP-A 2019-073696 can be used.

[0047] Examples of the purple colorant include an oxazine compound, a xanthene compound, a pyrromethene compound, a quinacridone compound, a perylene compound, and a thioindigo compound, and the like, and the oxazine compound is preferable. Specific examples of the purple colorant include purple pigments such as C.I. Pigment Violet 1, 19, 23, 27, 32, 37, 42, 60, and 61.

[0048] Examples of blue colorants include phthalocyanine compounds and squarylium compounds, with phthalocyanine compounds being preferred. The blue colorant is preferably a blue pigment. Specific examples of blue colorants include blue pigments such as C.I. Pigment Blue 1, 2, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 22, 29, 60, 64, 66, 79, 80, 87, and 88. Furthermore, aluminum phthalocyanine compounds having phosphorus atoms can also be used as blue colorants. Specific examples include the compounds described in paragraphs 0022 to 0030 of JP-A No. 2012-247591 and paragraph 0047 of JP-A No. 2011-157478. The blue colorant may be a C.I. Pigment Blue 15, 15:1, 15:2, 15:3, 15:4, 15:6, or the like, is preferably a copper phthalocyanine blue pigment.

[0049] Dyes can also be used as other colorants. There are no particular limitations on the dyes, and known dyes can be used. Examples include pyrazole azo dyes, anilino azo dyes, triarylmethane dyes, anthraquinone dyes, anthrapyridone dyes, benzylidene dyes, oxonol dyes, pyrazolotriazole azo dyes, pyridone azo dyes, cyanine dyes, phenothiazine dyes, pyrrolopyrazole azomethine dyes, xanthene dyes, phthalocyanine dyes, benzopyran dyes, indigo dyes, and pyrromethene dyes, with xanthene dyes and pyrromethene dyes being preferred.

[0050] A dye multimer can also be used as another colorant. The dye multimer is preferably a dye dissolved in a solvent. The dye multimer may also form particles. When the dye multimer is in the form of particles, it is typically used in a state dispersed in a solvent. A particulate dye multimer can be obtained, for example, by emulsion polymerization, and specific examples of the compounds and production methods described in JP-A 2015-214682 include those described in JP-A 2015-214682. The dye multimer has two or more dye structures in one molecule, preferably three or more dye structures. The upper limit is not particularly limited, but can be 100 or less. The multiple dye structures in one molecule may be the same dye structure or different dye structures. The weight-average molecular weight (Mw) of the dye multimer is preferably 2,000 to 50,000. The lower limit is more preferably 3,000 or more, and even more preferably 6,000 or more. The upper limit is more preferably 30,000 or less, and even more preferably 20,000 or less. As the dye multimer, compounds described in JP-A-2011-213925, JP-A-2013-041097, JP-A-2015-028144, JP-A-2015-030742, WO 2016 / 031442, etc. can also be used.

[0051] Other colorants include triarylmethane dye polymers described in Korean Patent Publication No. 10-2020-0028160, xanthene compounds described in JP 2020-117638, phthalocyanine compounds described in WO 2020 / 174991, isoindoline compounds described in JP 2020-160279 or salts thereof, compounds represented by formula 1 described in Korean Patent Publication No. 10-2020-0069442, compounds represented by formula 1 described in Korean Patent Publication No. 10-2020-0069730, and compounds represented by formula 1 described in Korean Patent Publication No. 10-2020-0069070. Compounds represented by the formula (I) described in Korean Patent Publication No. 10-2020-0069067, compounds represented by the formula (I) described in Korean Patent Publication No. 10-2020-0069062, halogenated zinc phthalocyanine pigments described in Japanese Patent No. 6809649, isoindoline compounds described in Japanese Patent Publication No. 2020-180176, phenothiazine compounds described in Japanese Patent Publication No. 2021-187913, halogenated zinc phthalocyanines described in International Publication No. 2022 / 004261, and halogenated zinc phthalocyanines described in International Publication No. 2021 / 250883 can be used. The other colorant may be a rotaxane, and the dye skeleton may be used in the cyclic structure of the rotaxane, in the rod-shaped structure, or in both structures.Other colorants include quinophthalone compounds represented by formula 1 of Korean Patent Publication No. 10-2020-0030759, polymer dyes described in Korean Patent Publication No. 10-2020-0061793, colorants described in JP-A-2022-029701, isoindoline compounds described in WO 2022 / 014635, aluminum phthalocyanine compounds described in WO 2022 / 024926, compounds described in JP-A-2022-045895, compounds described in WO 2022 / 050051, Compounds described in JP 2020-090676 A, compounds described in JP 2020-055956 A, compounds described in JP 2021-031681 A, compounds described in JP 2022-056354 A, compounds described in US Patent Application Publication No. 2021 / 0355327, compounds described in WO 2022 / 065357, compounds described in JP 2020-045436 A, compounds described in Korean Patent Publication No. 10-2021-0146726, compounds described in JP 2018-178039 A compounds described in Chinese Patent Application Publication No. 113881244, compounds described in Chinese Patent Application Publication No. 113881245, compounds described in Chinese Patent Application Publication No. 113881246, compounds described in JP 2022-104822 A, compounds described in JP 2022-096701 A, compounds described in JP 2020-023652 A, green pigments described in Journal of the Color Materials Association (published in 2022) pages 80 to 84, compounds described in JP 2022-143135 A, compounds described in JP 2022- Compounds described in JP-A-140287, compounds described in WO 2022 / 136308, perylene compounds described in Chinese Patent Application Publication No. 113061349, cyan pigments described in Korean Patent Publication No. 10-2017-0018993, isoindoline compounds described in JP-A-2020-180176, compounds described in JP-A-2023-013209, compounds described in JP-A-2023-013166, xanthene compounds described in WO 2023 / 286526, and the like can also be used.

[0052] The colorant contained in the coloring composition may include two or more chromatic colorants, and may form a black color by combining two or more chromatic colorants. Such a coloring composition is preferably used as a coloring composition for forming an infrared transmission filter. Examples of combinations of chromatic colorants when forming a black color by combining two or more chromatic colorants include the following: (1) An embodiment containing a red colorant, a blue colorant, and a yellow colorant. (2) An embodiment containing a red colorant, a blue colorant, a yellow colorant, and a violet colorant. (3) An embodiment containing a red colorant, a blue colorant, a yellow colorant, a violet colorant, and a green colorant. (4) An embodiment containing a red colorant, a blue colorant, a yellow colorant, and a green colorant. (5) An embodiment containing a yellow colorant and a violet colorant.

[0053] A preferred embodiment of the colorant contained in the coloring composition of the present invention includes the above-mentioned specific blue pigment and a copper phthalocyanine blue pigment. According to this embodiment, excellent shielding properties are obtained in the wavelength range of 600 to 700 nm. When the specific blue pigment and the copper phthalocyanine blue pigment are used in combination, the ratio of the specific blue pigment to the copper phthalocyanine blue pigment is preferably 20 to 400 parts by mass of the copper phthalocyanine blue pigment per 100 parts by mass of the specific blue pigment. The upper limit is preferably 300 parts by mass or less, more preferably 200 parts by mass or less. The lower limit is preferably 30 parts by mass or more, more preferably 50 parts by mass or more.

[0054] A preferred embodiment of the colorant contained in the coloring composition of the present invention includes the above-mentioned specific blue pigment and an oxazine compound. According to this embodiment, excellent shielding properties are achieved in the wavelength range of 600 to 700 nm. The oxazine compound is preferably a violet colorant, and more preferably a violet pigment. When the specific blue pigment and the oxazine compound are used in combination, the ratio of the specific blue pigment to the oxazine compound is preferably 5 to 30 parts by mass of the oxazine compound per 100 parts by mass of the specific blue pigment. The upper limit is preferably 25 parts by mass or less, and more preferably 20 parts by mass or less. The lower limit is preferably 8 parts by mass or more, and more preferably 10 parts by mass or more.

[0055] Another preferred embodiment of the colorant contained in the coloring composition of the present invention includes the specific blue pigment described above and at least one dye selected from a xanthene dye and a pyrromethene dye. This embodiment is excellent in terms of improving the transmittance at a wavelength of 450 nm. The xanthene dye and the pyrromethene dye are preferably violet dyes. When the specific blue pigment and the dye are used in combination, the ratio of the specific blue pigment to the dye is preferably 5 to 50 parts by weight per 100 parts by weight of the specific blue pigment. The upper limit is preferably 45 parts by weight or less, more preferably 40 parts by weight or less. The lower limit is preferably 10 parts by weight or more, more preferably 15 parts by weight or more.

[0056] The content of the colorant in the total solid content of the coloring composition is preferably 20% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, and particularly preferably 50% by mass or more, and the upper limit is preferably 80% by mass or less, more preferably 70% by mass or less.

[0057] The content of the specific blue pigment in the total solid content of the coloring composition is preferably 20% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, and particularly preferably 50% by mass or more. The upper limit is preferably 80% by mass or less, and more preferably 70% by mass or less. The content of the zinc phthalocyanine blue pigment in the total solid content of the coloring composition is preferably 20% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, and particularly preferably 50% by mass or more. The upper limit is preferably 80% by mass or less, and more preferably 70% by mass or less. The content of the unsubstituted ... The content of the specific blue pigment in the colorant is preferably 60% by mass or more, more preferably 65% ​​by mass or more, and even more preferably 70% by mass or more. The content of the zinc phthalocyanine blue pigment in the colorant is preferably 60% by mass or more, more preferably 65% ​​by mass or more, and even more preferably 70% by mass or more. The content of the unsubstituted zinc phthalocyanine blue pigment in the colorant is preferably 60% by mass or more, more preferably 65% ​​by mass or more, and even more preferably 70% by mass or more. The specific blue pigment may be used alone, or two or more types may be used in combination. When two or more types are used in combination, it is preferable that the total amount thereof is within the above range.

[0058] <<Resin>> The coloring composition of the present invention contains a resin. The resin is blended, for example, for the purpose of dispersing pigments and the like in the coloring composition or for the purpose of using as a binder. Note that a resin used mainly for dispersing pigments and the like in the coloring composition is also called a dispersant. However, such uses of the resin are merely examples, and the resin can also be used for purposes other than these uses.

[0059] The weight average molecular weight (Mw) of the resin is preferably 3,000 to 2,000,000. The upper limit is preferably 1,000,000 or less, and more preferably 500,000 or less. The lower limit is preferably 4,000 or more, and more preferably 5,000 or more.

[0060] Examples of resins include (meth)acrylic resins, epoxy resins, (meth)acrylamide resins, ene-thiol resins, polycarbonate resins, polyether resins, polyarylate resins, polysulfone resins, polyethersulfone resins, polyphenylene resins, polyarylene ether phosphine oxide resins, polyimide resins, polyamideimide resins, polyolefin resins, cyclic olefin resins, polyester resins, styrene resins, and siloxane resins. Further, examples of the resin include the resins described in paragraphs 0091 to 0099 of WO 2022 / 065215, the blocked polyisocyanate resins described in JP 2016-222891 A, the resins described in JP 2020-122052 A, the resins described in JP 2020-111656 A, the resins described in JP 2020-139021 A, and the resins described in JP 2017-138503 A having a structural unit having a ring structure in the main chain and a biphenyl group in the side chain. Resins containing structural units, resins described in paragraphs 0199 to 0233 of JP-A-2020-186373, alkali-soluble resins described in JP-A-2020-186325, resins represented by formula 1 described in Korean Patent Publication No. 10-2020-0078339, copolymers containing epoxy groups and acid groups described in WO 2022 / 030445, resins described in JP-A-2018-135514, and copolymers described in JP-A-2020-041046 can also be used.

[0061] The resin to be used is preferably a resin having an acid group, such as a carboxy group, a phosphate group, a sulfo group, or a phenolic hydroxy group.

[0062] The acid value of the resin having acid groups is preferably 30 to 500 mgKOH / g. The lower limit is preferably 40 mgKOH / g or more, and more preferably 50 mgKOH / g or more. The upper limit is preferably 400 mgKOH / g or less, more preferably 300 mgKOH / g or less, and even more preferably 200 mgKOH / g or less. The weight average molecular weight (Mw) of the resin having acid groups is preferably 5,000 to 100,000, and more preferably 5,000 to 50,000. The number average molecular weight (Mn) of the resin having acid groups is preferably 1,000 to 20,000.

[0063] The resin having an acid group preferably contains a repeating unit having an acid group on a side chain, and more preferably contains 5 to 70 mol% of the repeating units having an acid group on a side chain based on all repeating units of the resin. The upper limit of the content of repeating units having an acid group on a side chain is preferably 50 mol% or less, more preferably 30 mol% or less. The lower limit of the content of repeating units having an acid group on a side chain is preferably 10 mol% or more, more preferably 20 mol% or more.

[0064] For resins having acid groups, please refer to the descriptions in paragraphs

[0558] to

[0571] of JP 2012-208494 A (corresponding to paragraphs

[0685] to

[0700] of U.S. Patent Application Publication No. 2012 / 0235099 A) and paragraphs

[0076] to

[0099] of JP 2012-198408 A, the contents of which are incorporated herein by reference. Alternatively, commercially available resins having acid groups can be used. There are no particular limitations on the method for introducing acid groups into the resin, and examples include the method described in Japanese Patent No. 6,349,629 A. Furthermore, examples of methods for introducing acid groups into the resin include a method in which an acid anhydride is reacted with a hydroxy group generated by a ring-opening reaction of an epoxy group to introduce the acid group.

[0065] The coloring composition of the present invention also preferably contains a resin having a basic group. The resin having a basic group is preferably a resin containing a repeating unit having a basic group in a side chain, more preferably a copolymer having a repeating unit having a basic group in a side chain and a repeating unit not containing a basic group, and even more preferably a block copolymer having a repeating unit having a basic group in a side chain and a repeating unit not containing a basic group. The resin having a basic group can also be used as a dispersant. The amine value of the resin having a basic group is preferably 5 to 300 mgKOH / g. The lower limit is preferably 10 mgKOH / g or more, more preferably 20 mgKOH / g or more. The upper limit is preferably 200 mgKOH / g or less, more preferably 100 mgKOH / g or less.

[0066] Commercially available resins having basic groups include DISPERBYK-161, 162, 163, 164, 166, 167, 168, 174, 182, 183, 184, 185, 2000, 2001, 2050, 2150, 2163, 2164, and BYK-LPN6919 (all manufactured by BYK-Chemie), and Solsperse 112. 00, 13240, 13650, 13940, 24000, 26000, 28000, 32000, 32500, 32550, 32600, 33000, 34750, 35100, 35200, 37500, 38500, 39000, 53095, 56000, 7100 (all manufactured by The Lubrizol Group, Japan), Efka PX 4300, 4330, 4046, 4060, 4080 (all manufactured by BASF), and the like. In addition, the resin having a basic group may be the block copolymer (B) described in paragraphs 0063 to 0112 of JP-A-2014-219665, the block copolymer A1 described in paragraphs 0046 to 0076 of JP-A-2018-156021, or the vinyl resin having a basic group described in paragraphs 0150 to 0153 of JP-A-2019-184763, the contents of which are incorporated herein by reference.

[0067] The coloring composition of the present invention also preferably contains a resin having an acid group and a resin having a basic group. According to this embodiment, the storage stability of the coloring composition can be further improved. When a resin having an acid group and a resin having a basic group are used in combination, the content of the resin having a basic group is preferably 20 to 500 parts by mass, more preferably 30 to 300 parts by mass, and even more preferably 50 to 200 parts by mass, per 100 parts by mass of the resin having an acid group.

[0068] It is also preferable to use a resin having an aromatic carboxy group as the resin. In a resin having an aromatic carboxy group, the aromatic carboxy group may be contained in the main chain of the repeating unit or may be contained in a side chain of the repeating unit. It is preferable that the aromatic carboxy group is contained in the main chain of the repeating unit. In this specification, an aromatic carboxy group refers to a group having a structure in which one or more carboxy groups are bonded to an aromatic ring. In the aromatic carboxy group, the number of carboxy groups bonded to the aromatic ring is preferably 1 to 4, and more preferably 1 to 2. Examples of resins having an aromatic carboxy group include the resins described in paragraphs 0082 to 0107 of WO 2021 / 166858.

[0069] The coloring composition of the present invention preferably contains a resin as a dispersant. Examples of dispersants include acidic dispersants (acidic resins) and basic dispersants (basic resins). Here, the term "acidic dispersant (acidic resin)" refers to a resin in which the amount of acid groups is greater than the amount of basic groups. The acidic dispersant (acidic resin) is preferably a resin in which the amount of acid groups is 70 mol% or more when the total amount of acid groups and basic groups is taken as 100 mol%. The acid group possessed by the acidic dispersant (acidic resin) is preferably a carboxy group. The acid value of the acidic dispersant (acidic resin) is preferably 10 to 105 mgKOH / g. Furthermore, the term "basic dispersant (basic resin)" refers to a resin in which the amount of basic groups is greater than the amount of acid groups. The basic dispersant (basic resin) is preferably a resin in which the amount of basic groups is greater than the amount of acid groups when the total amount of acid groups and basic groups is taken as 100 mol%. The basic group possessed by the basic dispersant is preferably an amino group.

[0070] The resin used as the dispersant is preferably a graft resin. For details of the graft resin, please refer to the description in paragraphs 0025 to 0094 of JP 2012-255128 A, the contents of which are incorporated herein by reference.

[0071] The resin used as the dispersant is preferably a resin having an aromatic carboxy group, such as those mentioned above.

[0072] The resin used as the dispersant is preferably a polyimine-based dispersant containing a nitrogen atom in at least one of the main chain and the side chain. The polyimine-based dispersant is preferably a resin having a main chain with a partial structure containing a functional group with a pKa of 14 or less and a side chain having 40 to 10,000 atoms, and having a basic nitrogen atom in at least one of the main chain and the side chain. There are no particular restrictions on the basic nitrogen atom, as long as it is a nitrogen atom that exhibits basicity. For details about polyimine-based dispersants, please refer to the description in paragraphs 0102 to 0166 of JP 2012-255128 A, the contents of which are incorporated herein by reference.

[0073] The resin used as a dispersant is preferably a resin having a structure in which multiple polymer chains are bonded to a core portion. Examples of such resins include dendrimers (including star-shaped polymers). Specific examples of dendrimers include polymer compounds C-1 to C-31 described in paragraphs 0196 to 0209 of JP-A-2013-043962.

[0074] The resin used as a dispersant is also preferably a resin containing a repeating unit having an ethylenically unsaturated bond-containing group in a side chain. The content of the repeating unit having an ethylenically unsaturated bond-containing group in a side chain is preferably 10 mol % or more, more preferably 10 to 80 mol %, and even more preferably 20 to 70 mol %, of all repeating units of the resin.

[0075] As the dispersant, the resin described in JP 2018-087939 A, the block copolymers (EB-1) to (EB-9) described in paragraphs 0219 to 0221 of Japanese Patent No. 6432077 A, polyethyleneimine having a polyester side chain described in WO 2016 / 104803, block copolymers described in WO 2019 / 125940 A, block polymers having an acrylamide structural unit described in JP 2020-066687 A, block polymers having an acrylamide structural unit described in JP 2020-066688 A, dispersants described in WO 2016 / 104803, and the like can also be used.

[0076] Dispersants are also available as commercially available products, and specific examples thereof include the DISPERBYK series manufactured by BYK Chemie, the SOLSPERSE series manufactured by Lubrizol Japan, the Efka series manufactured by BASF, and the AJISPER series manufactured by Ajinomoto Fine-Techno Co., Ltd. In addition, the products described in paragraph 0129 of JP 2012-137564 A and the products described in paragraph 0235 of JP 2017-194662 A can also be used as dispersants.

[0077] The content of the resin in the total solid content of the coloring composition is preferably 1 to 60% by mass. The lower limit is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, and particularly preferably 20% by mass or more. The upper limit is preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less. The content of the resin having an acid group in the total solid content of the coloring composition is preferably 1 to 60% by mass. The lower limit is preferably 5% by mass or more, more preferably 10% by mass or more, even more preferably 15% by mass or more, and particularly preferably 20% by mass or more. The upper limit is preferably 50% by mass or less, more preferably 40% by mass or less, and even more preferably 30% by mass or less. The content of the dispersant is preferably 10 to 100 parts by mass relative to 100 parts by mass of the pigment. The lower limit is preferably 15 parts by mass or more, and more preferably 20 parts by mass or more. The upper limit is preferably 80 parts by mass or less, more preferably 60 parts by mass or less. The coloring composition of the present invention may contain only one type of resin, or may contain two or more types. When two or more types of resins are contained, it is preferable that the total amount thereof is in the above range.

[0078] <<Polymerizable Compound>> The coloring composition of the present invention preferably contains a polymerizable compound. Examples of the polymerizable compound include a compound having an ethylenically unsaturated bond-containing group. Examples of the ethylenically unsaturated bond-containing group include a vinyl group, a (meth)allyl group, and a (meth)acryloyl group. The polymerizable compound used in the present invention is preferably a radically polymerizable compound.

[0079] The polymerizable compound may be in any chemical form, such as a monomer, prepolymer, or oligomer, but is preferably a monomer. The molecular weight of the polymerizable compound is preferably 100 to 3,000. The upper limit is more preferably 2,000 or less, and even more preferably 1,500 or less. The lower limit is more preferably 150 or more, and even more preferably 250 or more.

[0080] The polymerizable compound is preferably a compound containing three or more ethylenically unsaturated bond-containing groups, more preferably a compound containing 3 to 15 ethylenically unsaturated bond-containing groups, and even more preferably a compound containing 3 to 6 ethylenically unsaturated bond-containing groups. Furthermore, the polymerizable compound is preferably a trifunctional to 15-functional (meth)acrylate compound, and more preferably a trifunctional to hexafunctional (meth)acrylate compound. Specific examples of the polymerizable compound include the compounds described in paragraphs 0075 to 0083 of WO 2022 / 065215 and the compounds described in Taiwan Patent Application Publication No. 201832008.

[0081] Preferred polymerizable compounds include dipentaerythritol tri(meth)acrylate (commercially available product: KAYARAD D-330, manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol tetra(meth)acrylate (commercially available product: KAYARAD D-320, manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol penta(meth)acrylate (commercially available product: KAYARAD D-310, manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol hexa(meth)acrylate (commercially available products: KAYARAD DPHA, manufactured by Nippon Kayaku Co., Ltd., and NK Ester A-DPH-12E, manufactured by Shin-Nakamura Chemical Co., Ltd.), and compounds having a structure in which the (meth)acryloyl group is bonded via an ethylene glycol and / or propylene glycol residue (e.g., SR454, SR499, commercially available from Sartomer). Examples of polymerizable compounds include diglycerin EO (ethylene oxide) modified (meth)acrylate (commercially available product: M-460, manufactured by Toagosei Co., Ltd.), pentaerythritol tetraacrylate (NK Ester A-TMMT, manufactured by Shin-Nakamura Chemical Co., Ltd.), and 1,6-hexanediol diacrylate (KAYARAD, manufactured by Nippon Kayaku Co., Ltd.). HDDA), RP-1040 (manufactured by Nippon Kayaku Co., Ltd.), Aronix TO-2349 (manufactured by Toagosei Co., Ltd.), NK Oligo UA-7200 (manufactured by Shin-Nakamura Chemical Co., Ltd.), DPHA-40H (manufactured by Nippon Kayaku Co., Ltd.), UA-306H, UA-306T, UA-306I, AH-600, T-600, AI-600, LINC-202UA (manufactured by Kyoeisha Chemical Co., Ltd.), 8UH-1006, 8UH-1012 (all manufactured by Taisei Fine Chemical Co., Ltd.), Light Acrylate POB-A0 (manufactured by Kyoeisha Chemical Co., Ltd.), and the like can also be used.

[0082] The content of the polymerizable compound in the total solid content of the coloring composition is preferably 1 to 30% by mass. The upper limit is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less. The lower limit is preferably 2% by mass or more, and more preferably 5% by mass or more. The coloring composition of the present invention may contain only one type of polymerizable compound, or may contain two or more types. When two or more types of polymerizable compounds are contained, the total amount thereof is preferably in the above range.

[0083] <<Photopolymerization initiator>> The coloring composition of the present invention preferably contains a photopolymerization initiator. The photopolymerization initiator is not particularly limited and can be appropriately selected from known photopolymerization initiators. For example, a compound having photosensitivity to light in the ultraviolet to visible region is preferred. The photopolymerization initiator is preferably a photoradical polymerization initiator.

[0084] Examples of the photopolymerization initiator include halogenated hydrocarbon derivatives (e.g., compounds having a triazine skeleton, compounds having an oxadiazole skeleton, etc.), acylphosphine compounds, hexaarylbiimidazole compounds, oxime compounds, organic peroxides, thio compounds, ketone compounds, aromatic onium salts, α-hydroxyketone compounds, α-aminoketone compounds, etc. From the viewpoint of exposure sensitivity, the photopolymerization initiator is preferably a trihalomethyltriazine compound, a benzyl dimethyl ketal compound, an α-hydroxyketone compound, an α-aminoketone compound, an acylphosphine compound, a phosphine oxide compound, a metallocene compound, an oxime compound, a hexaarylbiimidazole compound, an onium compound, a benzothiazole compound, a benzophenone compound, an acetophenone compound, a cyclopentadiene-benzene-iron complex, a halomethyloxadiazole compound, or a 3-aryl-substituted coumarin compound, more preferably a compound selected from an oxime compound, an α-hydroxyketone compound, an α-aminoketone compound, and an acylphosphine compound, and even more preferably an oxime compound.Further, as the photopolymerization initiator, compounds described in paragraphs 0065 to 0111 of JP-A No. 2014-130173, compounds described in Japanese Patent No. 6301489, compounds described in MATERIAL STAGE 37-60pp, vol. 19, No. 3, 2019, photopolymerization initiators described in WO 2018 / 221177, photopolymerization initiators described in WO 2018 / 110179, photopolymerization initiators described in JP 2019-043864 A, photopolymerization initiators described in JP 2019-044030 A, peroxide-based initiators described in JP 2019-167313 A, aminoacetophenone-based initiators having an oxazolidine group described in JP 2020-055992 A, oxime-based photopolymerization initiators described in JP 2013-190459 A, polymers described in JP 2020-172619 A, compounds represented by formula 1 described in WO 2020 / 152120, compounds described in JP 2021-181406 A, JP 2 Photopolymerization initiators described in JP-A-2022-013379, compounds represented by the formula (1) described in JP-A-2022-015747, fluorine-containing fluorene oxime ester photoinitiators described in JP-T-2021-507058, initiators described in Chinese Patent Application Publication No. 110764367, initiators described in JP-T-2022-518535, initiators described in WO 2021 / 175855, oxime ester compounds described in Chinese Patent Application Publication No. 110066225, compounds described in Korean Patent Publication No. 10-2022-0076157, compounds described in paragraphs 0042 to 0062 of WO 2019 / 013112 having a triarylamine or N- arylcarbazole skeleton, and the like.

[0085] Specific examples of hexaarylbiimidazole compounds include 2,2',4-tris(2-chlorophenyl)-5-(3,4-dimethoxyphenyl)-4,5-diphenyl-1,1'-biimidazole.

[0086] Commercially available α-hydroxyketone compounds include Omnirad 184, Omnirad 1173, Omnirad 2959, and Omnirad 127 (all manufactured by IGM Resins B.V.), and Irgacure 184, Irgacure 1173, Irgacure 2959, and Irgacure 127 (all manufactured by BASF). Commercially available α-aminoketone compounds include Omnirad 907, Omnirad 369, Omnirad 369E, Omnirad 379EG (all manufactured by IGM Resins B.V.), Irgacure 907, Irgacure 369, Irgacure 369E, Irgacure 379EG (all manufactured by BASF), etc. Commercially available acylphosphine compounds include Omnirad 819, Omnirad TPO (all manufactured by IGM Resins B.V.), Irgacure 819, Irgacure TPO (all manufactured by BASF), etc.

[0087] Examples of the oxime compound include the compounds described in paragraph 0142 of WO 2022 / 085485, the compounds described in Japanese Patent No. 5430746, the compounds described in Japanese Patent No. 5647738, the compounds represented by the general formula (1) of JP-A-2021-173858, and the compounds described in paragraphs 0022 to 0024, and the compounds represented by the general formula (1) of JP-A-2021-170089 and the compounds described in paragraphs 0117 to 0120. Specific examples of the oxime compound include 3-benzoyloxyiminobutan-2-one, 3-acetoxyiminobutan-2-one, 3-propionyloxyiminobutan-2-one, 2-acetoxyiminopentan-3-one, 2-acetoxyimino-1-phenylpropan-1-one, 2-benzoyloxyimino-1-phenylpropan-1-one, 3-(4-toluenesulfonyloxy)iminobutan-2-one, 2-ethoxycarbonyloxyimino-1-phenylpropan-1-one, 1-[4-(phenylthio)phenyl]-3-cyclohexyl-propane-1,2-dione-2-(O-acetyloxime), and the like. Commercially available products include Irgacure OXE01, Irgacure OXE02, Irgacure OXE03, and Irgacure OXE04 (manufactured by BASF), TR-PBG-301, TR-PBG-304, and TR-PBG-327 (manufactured by TRONLY), and ADEKA OPTOMER N-1919 (manufactured by ADEKA Corporation, photopolymerization initiator 2 described in JP-A-2012-014052). Furthermore, it is also preferable to use, as the oxime compound, a compound that is not colorable or a compound that is highly transparent and does not easily discolor. Commercially available products include ADEKA ARCLES NCI-730, NCI-831, and NCI-930 (manufactured by ADEKA Corporation).

[0088] As the photopolymerization initiator, an oxime compound having a fluorene ring, an oxime compound having a skeleton in which at least one benzene ring of a carbazole ring is replaced with a naphthalene ring, an oxime compound having a fluorine atom, an oxime compound having a nitro group, an oxime compound having a benzofuran skeleton, an oxime compound in which a substituent having a hydroxy group is bonded to a carbazole skeleton, or a compound described in paragraphs 0143 to 0149 of WO 2022 / 085485 can also be used.

[0089] Specific examples of oxime compounds that can be preferably used in the present invention are shown below, but the present invention is not limited to these.

[0090]

[0091] The oxime compound is preferably a compound having a maximum absorption wavelength in the wavelength range of 350 to 500 nm, and more preferably a compound having a maximum absorption wavelength in the wavelength range of 360 to 480 nm. Furthermore, from the viewpoint of sensitivity, the molar absorption coefficient of the oxime compound at a wavelength of 365 nm or 405 nm is preferably high, more preferably 1,000 to 300,000, even more preferably 2,000 to 300,000, and particularly preferably 5,000 to 200,000. The molar absorption coefficient of the compound can be measured using a known method. For example, it is preferable to measure using a spectrophotometer (Varian Cary-5 spectrophotometer) at a concentration of 0.01 g / L using ethyl acetate as a solvent.

[0092] As the photopolymerization initiator, a bifunctional or trifunctional or higher functional photoradical polymerization initiator may be used. By using such a photoradical polymerization initiator, two or more radicals are generated from one molecule of the photoradical polymerization initiator, thereby obtaining good sensitivity. Furthermore, when a compound with an asymmetric structure is used, crystallinity is reduced and solubility in solvents and the like is improved, making it less likely to precipitate over time, and improving the stability of the coloring composition over time. Specific examples of bifunctional or trifunctional or higher functional photoradical polymerization initiators include the compounds described in paragraph 0148 of WO 2022 / 065215.

[0093] The content of the photopolymerization initiator in the total solid content of the coloring composition is preferably 0.1 to 30% by mass. The lower limit is preferably 0.5% by mass or more, and more preferably 1% by mass or more. The upper limit is preferably 20% by mass or less, more preferably 15% by mass or less, and even more preferably 10% by mass or less. In the coloring composition of the present invention, only one type of photopolymerization initiator may be used, or two or more types may be used. When two or more types are used, the total amount thereof preferably falls within the above range.

[0094] <<Pigment Derivative>> The coloring composition of the present invention may contain a pigment derivative. The pigment derivative is used, for example, as a dispersing aid for the pigment. A dispersing aid is a material that enhances the dispersibility of the pigment in the coloring composition.

[0095] Examples of the pigment derivative include a compound having at least one structure selected from the group consisting of a dye structure and a triazine structure, and an acid group or a basic group.

[0096] Examples of the dye structure include a quinoline dye structure, a benzimidazolone dye structure, a benzisoindole dye structure, a benzothiazole dye structure, an iminium dye structure, a squarylium dye structure, a croconium dye structure, an oxonol dye structure, a pyrrolopyrrole dye structure, a diketopyrrolopyrrole dye structure, an azo dye structure, an azomethine dye structure, a phthalocyanine dye structure, a naphthalocyanine dye structure, an anthraquinone dye structure, a quinacridone dye structure, a dioxazine dye structure, a perinone dye structure, a perylene dye structure, a thiazineindigo dye structure, a thioindigo dye structure, an isoindoline dye structure, an isoindolinone dye structure, a quinophthalone dye structure, a dithiol dye structure, a triarylmethane dye structure, and a pyrromethene dye structure.

[0097] Examples of the acid group possessed by the pigment derivative include a carboxy group, a sulfo group, a phosphate group, a boronic acid group, an imidic acid group, and salts thereof. Examples of the atom or atomic group constituting the salt include an alkali metal ion (Li ＋ , Na ＋ , K. ＋ etc.), alkaline earth metal ions (Ca ２＋ , Mg ２＋ Examples of the imide acid group include an ammonium ion, an imidazolium ion, a pyridinium ion, and a phosphonium ion. ２ NHSO ２ R Ｘ１ , -CONHSO ２ R Ｘ２ , -CONHCOR Ｘ３ or -SO ２ NHCOR Ｘ４ A group represented by the formula: ２ NHSO ２ R Ｘ１ , -CONHSO ２ R Ｘ２ , or -SO ２ NHCOR Ｘ４ A group represented by the formula: ２ NHSO ２ R Ｘ１ or -CONHSO ２ R Ｘ２ is more preferred. Ｘ１ ~RＸ４ R each independently represents an alkyl group or an aryl group. Ｘ１ ~R Ｘ４ The alkyl group and aryl group represented by R may have a substituent. The substituent is preferably a halogen atom, more preferably a fluorine atom. Ｘ１ ~R Ｘ４ are each independently preferably an alkyl group containing a fluorine atom or an aryl group containing a fluorine atom, and more preferably an alkyl group containing a fluorine atom. The number of carbon atoms in the alkyl group containing a fluorine atom is preferably 1 to 10, more preferably 1 to 5, and even more preferably 1 to 3. The number of carbon atoms in the aryl group containing a fluorine atom is preferably 6 to 20, more preferably 6 to 12, and even more preferably 6.

[0098] Examples of basic groups possessed by the pigment derivative include amino groups, pyridinyl groups and their salts, ammonium salts, and phthalimidomethyl groups. Examples of atoms or atomic groups that constitute the salts include hydroxide ions, halogen ions, carboxylate ions, sulfonate ions, and phenoxide ions.

[0099] The amino group is —NR ｘ１１ R ｘ１２ and a cyclic amino group.

[0100] -NR ｘ１１ R ｘ１２ In the group represented by ｘ１１ and R ｘ１２are each independently a hydrogen atom, an alkyl group, or an aryl group, and are preferably an alkyl group. That is, the amino group is preferably a dialkylamino group. The alkyl group preferably has 1 to 10 carbon atoms, more preferably 1 to 5, and even more preferably 1 to 3. The alkyl group may be linear, branched, or cyclic, but is preferably linear or branched, and more preferably linear. The alkyl group may have a substituent. Examples of the substituent include the groups explained above for the substituent T. The aryl group preferably has 6 to 30 carbon atoms, more preferably 6 to 20, and even more preferably 6 to 12. The aryl group may have a substituent. Examples of the substituent include the groups explained above for the substituent T.

[0101] Examples of the cyclic amino group include a pyrrolidine group, a piperidine group, a piperazine group, a morpholine group, etc. These groups may further have a substituent.

[0102] The pigment derivative may be a pigment derivative having excellent visible transparency (hereinafter also referred to as a transparent pigment derivative). The maximum molar absorption coefficient (εmax) of the transparent pigment derivative in the wavelength range of 400 to 700 nm is 3000 L mol －１ ・cm －１ It is preferable that the concentration is 1000 L mol or less. －１ ・cm －１ More preferably, it is 100 L mol or less. －１ ・cm －１ The lower limit of εmax is, for example, 1 L mol －１ ・cm －１ or more, and 10 L mol －１ ・cm －１ More than that is fine.

[0103] Specific examples of pigment derivatives include the compounds described in the Examples below, the compounds described in paragraph 0124 of WO 2022 / 085485, the benzimidazolone compounds or salts thereof described in JP 2018-168244 A, and compounds having an isoindoline skeleton described in general formula (1) of Japanese Patent No. 6,996,282.

[0104] The content of the pigment derivative is preferably 1 to 30 parts by mass, and more preferably 3 to 20 parts by mass, relative to 100 parts by mass of the pigment. The total content of the pigment derivative and colorant is preferably 40% by mass or more, more preferably 50% by mass or more, and even more preferably 60% by mass or more, based on the total solid content of the coloring composition. The upper limit is preferably 80% by mass or less, and more preferably 70% by mass or less. Only one type of pigment derivative may be used, or two or more types may be used in combination.

[0105] <<Polyalkyleneimine>> The coloring composition of the present invention may also contain a polyalkyleneimine. The polyalkyleneimine is used, for example, as a dispersing aid for pigments. The polyalkyleneimine is a polymer obtained by ring-opening polymerization of an alkyleneimine. The polyalkyleneimine is preferably a polymer having a branched structure containing a primary amino group, a secondary amino group, and a tertiary amino group. The alkyleneimine preferably has 2 to 6 carbon atoms, more preferably 2 to 4 carbon atoms, even more preferably 2 or 3 carbon atoms, and particularly preferably 2 carbon atoms.

[0106] The molecular weight of the polyalkyleneimine is preferably 200 or more, more preferably 250 or more. The upper limit is preferably 100,000 or less, more preferably 50,000 or less, even more preferably 10,000 or less, and particularly preferably 2,000 or less. Regarding the molecular weight value of the polyalkyleneimine, if the molecular weight can be calculated from the structural formula, the molecular weight of the polyalkyleneimine is the value calculated from the structural formula. On the other hand, if the molecular weight of the specific amine compound cannot be calculated from the structural formula or calculation is difficult, the number average molecular weight value measured by the boiling point elevation method is used. If the number average molecular weight cannot be measured by the boiling point elevation method or is difficult to measure, the number average molecular weight value measured by the viscosity method is used. If the number average molecular weight cannot be measured by the viscosity method or is difficult to measure, the number average molecular weight value measured in terms of polystyrene by GPC (gel permeation chromatography) is used.

[0107] The amine value of the polyalkyleneimine is preferably 5 mmol / g or more, more preferably 10 mmol / g or more, and even more preferably 15 mmol / g or more.

[0108] Specific examples of alkyleneimines include ethyleneimine, propyleneimine, 1,2-butyleneimine, and 2,3-butyleneimine, with ethyleneimine or propyleneimine being preferred, and ethyleneimine being more preferred. It is particularly preferred that the polyalkyleneimine be polyethyleneimine. Furthermore, the polyethyleneimine preferably contains primary amino groups in an amount of 10 mol% or more, more preferably 20 mol% or more, and even more preferably 30 mol% or more, based on the total of primary amino groups, secondary amino groups, and tertiary amino groups. Commercially available polyethyleneimines include Epomin SP-003, SP-006, SP-012, SP-018, SP-200, and P-1000 (all manufactured by Nippon Shokubai Co., Ltd.).

[0109] The content of the polyalkyleneimine in the total solid content of the coloring composition is preferably 0.1 to 5% by mass. The lower limit is preferably 0.2% by mass or more, more preferably 0.5% by mass or more, and even more preferably 1% by mass or more. The upper limit is preferably 4.5% by mass or less, more preferably 4% by mass or less, and even more preferably 3% by mass or less. The content of the polyalkyleneimine is preferably 0.5 to 20 parts by mass relative to 100 parts by mass of the pigment. The lower limit is preferably 0.6 parts by mass or more, more preferably 1 part by mass or more, and even more preferably 2 parts by mass or more. The upper limit is preferably 10 parts by mass or less, and even more preferably 8 parts by mass or less. Only one type of polyalkyleneimine may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount thereof is in the above-mentioned range.

[0110] <<Solvent>> The coloring composition of the present invention contains a solvent. Examples of the solvent include organic solvents. The type of solvent is basically not particularly limited as long as the solubility of each component and the coatability of the composition are satisfied. Examples of organic solvents include ester-based solvents, ketone-based solvents, alcohol-based solvents, amide-based solvents, ether-based solvents, and hydrocarbon-based solvents. For details of these, please refer to paragraph 0223 of WO 2015 / 166779, the contents of which are incorporated herein by reference. Furthermore, ester-based solvents substituted with a cyclic alkyl group and ketone-based solvents substituted with a cyclic alkyl group can also be preferably used. Specific examples of organic solvents include polyethylene glycol monomethyl ether, dichloromethane, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, 2-pentanone, 3-pentanone, 4-heptanone, cyclohexanone, 2-methylcyclohexanone, 3-methylcyclohexanone, 4-methylcyclohexanone, cycloheptanone, cyclooctanone, cyclohexyl acetate, cyclopentanone, ethyl carbitol acetate, butyl carbitol acetate, propylene glycol monomethyl ether ... Examples of suitable ethylene glycol monomethyl ether acetate include 3-methoxy-N,N-dimethylpropanamide, 3-butoxy-N,N-dimethylpropanamide, propylene glycol diacetate, 3-methoxybutanol, methyl ethyl ketone, gamma butyrolactone, sulfolane, anisole, 1,4-diacetoxybutane, diethylene glycol monoethyl ether acetate, butane-1,3-diyl diacetate, dipropylene glycol methyl ether acetate, diacetone alcohol (also known as diacetone alcohol, 4-hydroxy-4-methyl-2-pentanone), 2-methoxypropyl acetate, 2-methoxy-1-propanol, and isopropyl alcohol.However, it may be preferable to reduce the amount of aromatic hydrocarbons (benzene, toluene, xylene, ethylbenzene, etc.) used as organic solvents for environmental reasons (for example, the amount may be 50 ppm by mass (parts per million) or less, 10 ppm by mass or less, or 1 ppm by mass or less, relative to the total amount of organic solvents).

[0111] The metal content of the organic solvent is preferably low. The metal content of the organic solvent is preferably, for example, 10 parts per billion (ppb) by mass or less. If necessary, an organic solvent with a mass ppt (parts per trillion) level may be used, and such an organic solvent is provided, for example, by Toyo Gosei Co., Ltd. (The Chemical Daily, November 13, 2015).

[0112] Methods for removing impurities such as metals from organic solvents include, for example, distillation (molecular distillation, thin-film distillation, etc.) and filtration using a filter. The pore size of the filter used for filtration is preferably 10 μm or less, more preferably 5 μm or less, and even more preferably 3 μm or less. The filter material is preferably polytetrafluoroethylene, polyethylene, or nylon.

[0113] The organic solvent may contain isomers (compounds having the same number of atoms but different structures). The organic solvent may contain only one type of isomer or multiple types of isomers.

[0114] The organic solvent preferably has a peroxide content of 0.8 mmol / L or less, and more preferably contains substantially no peroxide.

[0115] The content of the solvent in the coloring composition is preferably from 10 to 95% by mass, more preferably from 20 to 90% by mass, and even more preferably from 30 to 90% by mass.

[0116] From the viewpoint of environmental regulations, it is preferable that the colored composition of the present invention is substantially free of environmentally restricted substances. In the present invention, "substantially free of environmentally restricted substances" means that the content of environmentally restricted substances in the colored composition is 50 mass ppm or less, preferably 30 mass ppm or less, more preferably 10 mass ppm or less, and particularly preferably 1 mass ppm or less. Examples of environmentally restricted substances include benzene; alkylbenzenes such as toluene and xylene; and halogenated benzenes such as chlorobenzene. These substances are registered as environmentally restricted substances under the REACH (Registration Evaluation Authorization and Restriction of Chemicals) regulations, the PRTR (Pollutant Release and Transfer Register) Act, the VOC (Volatile Organic Compounds) regulations, etc., and their usage amounts and handling methods are strictly regulated. These compounds may be used as solvents when producing each component used in the coloring composition, and may be mixed into the coloring composition as a residual solvent. From the viewpoint of human safety and environmental considerations, it is preferable to reduce these substances as much as possible. Examples of methods for reducing environmentally restricted substances include a method in which the system is heated or depressurized to a temperature above the boiling point of the environmentally restricted substance, thereby distilling off the environmentally restricted substance from the system. Furthermore, when distilling off a small amount of environmentally regulated substances, it is useful to perform azeotropy with a solvent having a boiling point equivalent to that of the solvent in question in order to increase efficiency. Furthermore, when a radically polymerizable compound is contained, a polymerization inhibitor or the like may be added before distillation under reduced pressure to prevent intermolecular crosslinking due to the progress of a radical polymerization reaction during distillation under reduced pressure. These distillation methods can be used at any stage, such as the stage of raw materials, the stage of a product obtained by reacting the raw materials (for example, a resin solution or a polyfunctional monomer solution after polymerization), or the stage of a colored composition prepared by mixing these compounds.

[0117] <<Infrared absorbent>> The coloring composition of the present invention can further contain an infrared absorbent. For example, when an infrared transmission filter is formed using the coloring composition of the present invention, the wavelength of light transmitted through the resulting film can be shifted to a longer wavelength side by adding an infrared absorbent to the coloring composition. The infrared absorbent is preferably a compound having a maximum absorption wavelength on the longer wavelength side than a wavelength of 700 nm. The infrared absorbent is preferably a compound having a maximum absorption wavelength in the wavelength range of more than 700 nm to 1800 nm or less. In addition, the absorbance A of the infrared absorbent at a wavelength of 500 nm can be １ and absorbance A at the maximum absorption wavelength ２ Ratio A １ / A ２ is preferably 0.08 or less, and more preferably 0.04 or less.

[0118] Examples of infrared absorbers include pyrrolopyrrole compounds, cyanine compounds, squarylium compounds, phthalocyanine compounds, naphthalocyanine compounds, quaterrylene compounds, merocyanine compounds, croconium compounds, oxonol compounds, iminium compounds, dithiol compounds, triarylmethane compounds, pyrromethene compounds, azomethine compounds, anthraquinone compounds, dibenzofuranone compounds, dithiolene metal complexes, metal oxides, and metal borides. Specific examples of these include the compounds described in paragraphs 0114 to 0121 of WO 2022 / 065215. Examples of infrared absorbers that can be used include the compounds described in paragraph 0121 of WO 2022 / 065215, squarylium compounds described in JP 2020-075959 A, and copper complexes described in Korean Patent Publication No. 10-2019-0135217. Further, croconic acid compounds described in JP 2021-195515 A, infrared absorbers described in JP 2022-022070 A, croconium compounds described in WO 2019 / 021767 A, compounds described in JP 2019-127549 A, compounds described in WO 2022 / 059619 A, compounds described in JP 2022-151682 A, squarylium compounds described in JP 2022-188858 A, compounds described in JP 2022-184710 A, compounds described in JP 2022-189736 A can also be used.

[0119] As the infrared absorber, tungsten oxide represented by the following formula described in paragraph 0025 of European Patent No. 3628645 can also be used. １ ａ M ２ ｂ W ｃ O ｄ (P(O) ｎ R ｍ ) ｅ M １ , M ２represents an ammonium cation or a metal cation, a is 0.01 to 0.5, b is 0 to 0.5, c is 1, d is 2.5 to 3, e is 0.01 to 0.75, n is 1, 2 or 3, m is 1, 2 or 3, and R represents a hydrocarbon group which may have a substituent.

[0120] The content of the infrared absorber in the total solid content of the coloring composition is preferably 1 to 40% by mass. The lower limit is preferably 2% by mass or more, more preferably 5% by mass or more, and even more preferably 10% by mass or more. The upper limit is preferably 30% by mass or less, more preferably 25% by mass or less. The coloring composition of the present invention may contain only one type of infrared absorber, or may contain two or more types. When two or more types of infrared absorbers are contained, the total amount thereof is preferably in the above range.

[0121] <<Compound Having a Cyclic Ether Group>> The coloring composition of the present invention can contain a compound having a cyclic ether group. Examples of the cyclic ether group include an epoxy group and an oxetanyl group. The compound having a cyclic ether group is preferably a compound having an epoxy group (hereinafter also referred to as an epoxy compound). Examples of the epoxy compound include compounds having one or more epoxy groups in one molecule, and compounds having two or more epoxy groups are preferred. The epoxy compound is preferably a compound having 1 to 100 epoxy groups in one molecule. The upper limit of the number of epoxy groups contained in the epoxy compound can be, for example, 10 or less, or 5 or less. The lower limit of the number of epoxy groups contained in the epoxy compound is preferably 2 or more. Examples of compounds having a cyclic ether group include the compounds described in paragraphs 0034 to 0036 of JP-A-2013-011869, 0147 to 0156 of JP-A-2014-043556, and 0085 to 0092 of JP-A-2014-089408, and the compounds described in JP-A-2017-179172, the xanthene epoxy resins described in JP-A-2021-195421, and the xanthene epoxy resins described in JP-A-2021-195422 can also be used.

[0122] The compound having a cyclic ether group may be a low molecular weight compound (for example, a molecular weight of less than 2000, or even less than 1000) or a high molecular weight compound (macromolecule) (for example, a molecular weight of 1000 or more, and in the case of a polymer, a weight average molecular weight of 1000 or more). The weight average molecular weight of the compound having an epoxy group is preferably 200 to 100,000, more preferably 500 to 50,000. The upper limit of the weight average molecular weight is more preferably 10,000 or less, particularly preferably 5,000 or less, and even more preferably 3,000 or less.

[0123] Commercially available examples of compounds having a cyclic ether group include EHPE3150 (manufactured by Daicel Corporation), EPICLON N-695 (manufactured by DIC Corporation), Marproof G-0150M, G-0105SA, G-0130SP, G-0250SP, G-1005S, G-1005SA, G-1010S, G-2050M, G-01100, and G-01758 (all manufactured by NOF Corporation, epoxy group-containing polymers).

[0124] The content of the compound having a cyclic ether group in the total solid content of the coloring composition is preferably 0.1 to 20% by mass. The lower limit is preferably 0.5% by mass or more, and more preferably 1% by mass or more. The upper limit is preferably 15% by mass or less, and more preferably 10% by mass or less. Only one type of compound having a cyclic ether group may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount thereof is in the above range.

[0125] <<Curing Accelerator>> The coloring composition of the present invention may contain a curing accelerator. Examples of the curing accelerator include thiol compounds, methylol compounds, amine compounds, phosphonium salt compounds, amidine salt compounds, amide compounds, base generators, isocyanate compounds, alkoxysilane compounds, and onium salt compounds. Specific examples of the curing accelerator include the compounds described in paragraph 0164 of WO 2022 / 085485 and the compounds described in JP 2021-181406 A. The content of the curing accelerator in the total solids content of the coloring composition is preferably 0.3 to 8.9% by mass, more preferably 0.8 to 6.4% by mass.

[0126] <<UV Absorber>> The coloring composition of the present invention may contain an UV absorber. Examples of UV absorbers include conjugated diene compounds, aminodiene compounds, salicylate compounds, benzophenone compounds, benzotriazole compounds, acrylonitrile compounds, hydroxyphenyltriazine compounds, indole compounds, triazine compounds, and dibenzoyl compounds. Specific examples of such compounds include the compound described in paragraph 0179 of WO 2022 / 085485, the reactive triazine UV absorber described in JP 2021-178918 A, the UV absorber described in JP 2022-007884 A, and the compound described in Korean Patent Publication No. 10-2022-0014454. The content of the UV absorber in the total solid content of the coloring composition is preferably 0.01 to 10% by mass, more preferably 0.01 to 5% by mass. In the present invention, only one UV absorber may be used, or two or more UV absorbers may be used. When two or more types are used, the total amount is preferably within the above range.

[0127] <<Polymerization Inhibitor>> The coloring composition of the present invention may contain a polymerization inhibitor. Examples of the polymerization inhibitor include hydroquinone, p-methoxyphenol, di-tert-butyl-p-cresol, pyrogallol, tert-butylcatechol, benzoquinone, 4,4'-thiobis(3-methyl-6-tert-butylphenol), 2,2'-methylenebis(4-methyl-6-t-butylphenol), and N-nitrosophenylhydroxyamine salts (ammonium salts, cerous salts, etc.). Among these, p-methoxyphenol is preferred. The content of the polymerization inhibitor in the total solid content of the coloring composition is preferably 0.0001 to 5 mass%. The polymerization inhibitor may be used alone or in combination with two or more types. In the case of two or more types, the total amount preferably falls within the above-mentioned range.

[0128] <<Silane Coupling Agent>> The coloring composition of the present invention may contain a silane coupling agent. Examples of the silane coupling agent include silane compounds having a hydrolyzable group, and preferably silane compounds having a hydrolyzable group and other functional groups. The hydrolyzable group refers to a substituent that is directly bonded to a silicon atom and can form a siloxane bond by at least one of a hydrolysis reaction and a condensation reaction. Examples of the hydrolyzable group include a halogen atom, an alkoxy group, and an acyloxy group, and an alkoxy group is preferred. That is, the silane coupling agent is preferably a compound having an alkoxysilyl group. In addition, examples of functional groups other than the hydrolyzable group include a vinyl group, a (meth)allyl group, a (meth)acryloyl group, a mercapto group, an epoxy group, an oxetanyl group, an amino group, a ureido group, a sulfide group, an isocyanate group, and a phenyl group, and an amino group, a (meth)acryloyl group, and an epoxy group are preferred. Specific examples of the silane coupling agent include the compound described in paragraph 0177 of WO 2022 / 085485 and the compound described in JP 2019-183020 A. The content of the silane coupling agent in the total solid content of the coloring composition is preferably 0.01 to 15.0 mass%, more preferably 0.05 to 10.0 mass%. Only one type of silane coupling agent may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount is within the above range.

[0129] <<Surfactant>> The coloring composition of the present invention may contain a surfactant. As the surfactant, various surfactants such as a fluorine-based surfactant, a nonionic surfactant, a cationic surfactant, an anionic surfactant, and a silicone-based surfactant can be used. The surfactant is preferably a silicone-based surfactant or a fluorine-based surfactant, and more preferably a silicone-based surfactant. For the surfactant, reference can be made to the surfactants described in paragraphs 0238 to 0245 of WO 2015 / 166779, the contents of which are incorporated herein by reference.

[0130] As the fluorine-based surfactant, compounds described in paragraphs 0167 to 0173 of WO 2022 / 085485 can be used.

[0131] Examples of nonionic surfactants include the compounds described in paragraph 0174 of WO 2022 / 085485.

[0132] Silicone surfactants include DOWSIL SH8400, SH8400 FLUID, FZ-2122, 67 Additive, 74 Additive, M Additive, and SF 8419. OIL (all manufactured by Dow Toray Industries, Inc.), TSF-4300, TSF-4445, TSF-4460, TSF-4452 (all manufactured by Momentive Performance Materials), KP-341, KF-6000, KF-6001, KF-6002, KF-6003 (all manufactured by Shin-Etsu Chemical Co., Ltd.), BYK-307, BYK-322, BYK-323, BYK-330, BYK-333, BYK-3760, BYK-UV3510 (all manufactured by BYK-Chemie).

[0133] Furthermore, the silicone surfactant may also be a compound having the following structure:

[0134] The content of the surfactant in the total solid content of the coloring composition is preferably 0.001% by mass to 5.0% by mass, more preferably 0.005% by mass to 3.0% by mass. The surfactant may be one type or two or more types. When two or more types are used, it is preferable that the total amount is in the above range.

[0135] <<Antioxidant>> The coloring composition of the present invention may contain an antioxidant. Examples of antioxidants include phenolic compounds, phosphite ester compounds, and thioether compounds. As the phenolic compound, any phenolic compound known as a phenolic antioxidant can be used. Preferred phenolic compounds include hindered phenolic compounds. Compounds having a substituent at the site adjacent to the phenolic hydroxy group (ortho position) are preferred. As the substituent, a substituted or unsubstituted alkyl group having 1 to 22 carbon atoms is preferred. Furthermore, as the antioxidant, a compound having a phenol group and a phosphite ester group in the same molecule is also preferred. Furthermore, as the antioxidant, a phosphorus-based antioxidant can also be suitably used. Examples of phosphorus-based antioxidants include tris[2-[[2,4,8,10-tetrakis(1,1-dimethylethyl)dibenzo[d,f][1,3,2]dioxaphosphepin-6-yl]oxy]ethyl]amine, tris[2-[(4,6,9,11-tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosphepin-2-yl)oxy]ethyl]amine, and ethylbis(2,4-di-tert-butyl-6-methylphenyl)phosphite. Commercially available antioxidants include, for example, ADK STAB AO-20, ADK STAB AO-30, ADK STAB AO-40, ADK STAB AO-50, ADK STAB AO-50F, ADK STAB AO-60, ADK STAB AO-60G, ADK STAB AO-80, and ADK STAB AO-330 (manufactured by ADEKA Corporation). Examples of the antioxidant include the compounds described in paragraphs 0023 to 0048 of Japanese Patent No. 6268967, the compounds described in WO 2017 / 006600, the compounds described in WO 2017 / 164024, and the compounds described in Korean Patent Publication No. 10-2019-0059371. The content of the antioxidant in the total solid content of the coloring composition is preferably 0.01 to 20 mass%, more preferably 0.3 to 15 mass%. Only one type of antioxidant may be used, or two or more types may be used. When two or more types are used, it is preferable that the total amount is in the above range.

[0136] <<Other Components>> The coloring composition of the present invention may contain, as necessary, a sensitizer, a plasticizer, and other auxiliaries (for example, conductive particles, fillers, antifoaming agents, flame retardants, leveling agents, peeling promoters, fragrances, surface tension modifiers, chain transfer agents, etc.). By appropriately incorporating these components, properties such as film physical properties can be adjusted. As these components, the compounds described in paragraph 0182 of WO 2022 / 085485 can be used.

[0137] The coloring composition of the present invention may contain a metal oxide in order to adjust the refractive index of the resulting film. Examples of the metal oxide include TiO ２ , ZrO ２ , Al ２ O ３ , SiO ２ The primary particle size of the metal oxide is preferably 1 to 100 nm, more preferably 3 to 70 nm, and even more preferably 5 to 50 nm. The metal oxide may have a core-shell structure. In this case, the core may be hollow.

[0138] The coloring composition of the present invention may contain a light resistance improver. Examples of the light resistance improver include the compounds described in paragraph 0183 of WO 2022 / 085485.

[0139] It is also preferable that the coloring composition of the present invention is substantially free of terephthalic acid ester. Here, "substantially free of" means that the content of terephthalic acid ester in the total amount of the coloring composition is 1000 ppb by mass or less, more preferably 100 ppb by mass or less, and particularly preferably zero.

[0140] In view of environmental regulations, the colored composition of the present invention preferably has a melamine content of 10,000 ppm by mass or less.

[0141] The coloring composition of the present invention preferably has a free metal content of 100 ppm or less, more preferably 50 ppm or less. The free halogen content is preferably 100 ppm or less, more preferably 50 ppm or less. Examples of methods for reducing the free metals and halogens in the coloring composition include washing with ion-exchanged water, filtration, ultrafiltration, and purification with an ion-exchange resin.

[0142] From the viewpoint of environmental regulations, the use of perfluoroalkyl sulfonic acids and their salts, and perfluoroalkyl carboxylic acids and their salts may be restricted. In the colored composition of the present invention, when the content of the above-mentioned compounds is reduced, the content of perfluoroalkyl sulfonic acids (particularly perfluoroalkyl sulfonic acids having a perfluoroalkyl group of 6 to 8 carbon atoms) and their salts, and perfluoroalkyl carboxylic acids (particularly perfluoroalkyl carboxylic acids having a perfluoroalkyl group of 6 to 8 carbon atoms) and their salts is preferably in the range of 0.01 ppb to 1,000 ppb, more preferably in the range of 0.05 ppb to 500 ppb, and even more preferably in the range of 0.1 ppb to 300 ppb, relative to the total solids content of the colored composition. The colored composition of the present invention may be substantially free of perfluoroalkyl sulfonic acids and their salts, and perfluoroalkyl carboxylic acids and their salts. For example, by using a compound that can replace perfluoroalkyl sulfonic acid and its salt, and a compound that can replace perfluoroalkyl carboxylic acid and its salt, a coloring composition that is substantially free of perfluoroalkyl sulfonic acid and its salt, and perfluoroalkyl carboxylic acid and its salt may be selected. Examples of compounds that can replace regulated compounds include compounds that are exempt from regulation due to the difference in the number of carbon atoms in the perfluoroalkyl group. However, the above content does not preclude the use of perfluoroalkyl sulfonic acid and its salt, and perfluoroalkyl carboxylic acid and its salt. The coloring composition of the present invention may contain perfluoroalkyl sulfonic acid and its salt, and perfluoroalkyl carboxylic acid and its salt within the maximum allowable range.

[0143] From the viewpoint of environmental regulations, the use of fluorine-containing compounds may be restricted. When the content of the fluorine-containing compound in the coloring composition is reduced, the content of the fluorine-containing compound in the coloring composition is preferably 5% by mass or less, more preferably 1% by mass or less, and even more preferably 0.1% by mass or less. The coloring composition may be substantially free of fluorine-containing compounds.

[0144] The water content of the colored composition of the present invention is usually 3% by mass or less, preferably 0.01 to 1.5% by mass, and more preferably 0.1 to 1.0% by mass. The water content can be measured by the Karl Fischer method.

[0145] The colored composition of the present invention can be used by adjusting the viscosity for the purpose of adjusting the film surface state (flatness, etc.), adjusting the film thickness, etc. The viscosity value can be appropriately selected as needed, but for example, it is preferably 0.3 mPa·s to 50 mPa·s, and more preferably 0.5 mPa·s to 20 mPa·s at 25°C. The viscosity can be measured, for example, using a cone-plate type viscometer, with the temperature adjusted to 25°C.

[0146] <<Storage Container>> The container for storing the coloring composition is not particularly limited, and any known container can be used. In addition, the container described in paragraph 0187 of WO 2022 / 085485 can be used as the storage container.

[0147] <Method for preparing colored composition> The colored composition of the present invention can be prepared by mixing the above-mentioned components. When preparing the colored composition, all components may be simultaneously dissolved and / or dispersed in a solvent to prepare the colored composition, or, if necessary, each component may be prepared as two or more appropriate solutions or dispersions, which may be mixed at the time of use (at the time of application) to prepare the colored composition.

[0148] The preparation of the coloring composition preferably includes a process for dispersing the pigment. In the process for dispersing the pigment, mechanical forces used to disperse the pigment include compression, squeezing, impact, shear, and cavitation. Specific examples of these processes include a bead mill, a sand mill, a roll mill, a ball mill, a paint shaker, a microfluidizer, a high-speed impeller, a sand grinder, a flow jet mixer, high-pressure wet atomization, and ultrasonic dispersion. Furthermore, when grinding the pigment in a sand mill (bead mill), it is preferable to use small-diameter beads, increase the bead packing ratio, or otherwise increase the grinding efficiency under such conditions. Furthermore, it is preferable to remove coarse particles after the grinding process by filtration, centrifugation, or the like. In addition, the process and disperser for dispersing pigments can be suitably used, for example, the process and disperser described in "Dispersion Technology Encyclopedia," published by Joho Kiko Co., Ltd., July 15, 2005, or "Dispersion Technology and Industrial Applications Focused on Suspension (Solid / Liquid Dispersion System) - Comprehensive Data Collection," published by the Management Development Center Publishing Department, October 10, 1978, or paragraph 0022 of JP-A No. 2015-157893. In addition, in the process for dispersing pigments, particle refinement may be performed in a salt milling step. The materials, equipment, processing conditions, etc. used in the salt milling step can be found in, for example, JP-A Nos. 2015-194521 and 2012-046629.

[0149] In preparing the colored composition, it is preferable to filter the colored composition with a filter for the purpose of removing foreign matter, reducing defects, etc. Examples of the type of filter and filtration method used for filtration include the filters and filtration methods described in paragraphs 0196 to 0199 of WO 2022 / 085485.

[0150] <Film> The film of the present invention is a film obtained from the colored composition of the present invention described above. The film of the present invention can be used for optical filters such as color filters and infrared transmission filters.

[0151] The thickness of the film of the present invention can be adjusted appropriately depending on the purpose. For example, the thickness is preferably 1.3 μm or less, more preferably 1 μm or less, and even more preferably 0.8 μm or less. The lower limit of the thickness is preferably 0.1 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 μm or more.

[0152] When the film of the present invention is used as a color filter, the film of the present invention preferably has a transmittance of 45% or more, more preferably 50% or more, and even more preferably 55% or more, in the thickness direction of the film for light with a wavelength of 400 nm. The transmittance of the film for light with a wavelength of 450 nm is preferably 70% or more, more preferably 75% or more, and even more preferably 80% or more. The minimum transmittance of the film for light with a wavelength of 400 to 500 nm is preferably 30% or more, more preferably 35% or more, and even more preferably 40% or more. The maximum transmittance of the film for light with a wavelength of 550 to 700 nm is preferably 10% or less, more preferably 5% or less, and even more preferably 3% or less. A film having such spectral characteristics can be preferably used as a blue pixel in a color filter.

[0153] When the film of the present invention is used as an infrared transmission filter, it is preferable that the film of the present invention has, for example, any one of the following spectral characteristics (1) to (4). (1): In the thickness direction of the film, the maximum transmittance for light in the wavelength range of 400 to 640 nm is 20% or less (preferably 15% or less, more preferably 10% or less), and the minimum transmittance for light in the wavelength range of 800 to 1300 nm is 70% or more (preferably 75% or more, more preferably 80% or more). A film having such spectral characteristics can block light in the wavelength range of 400 to 640 nm and transmit light with wavelengths longer than 700 nm. (2): In the thickness direction of the film, the maximum transmittance for light in the wavelength range of 400 to 750 nm is 20% or less (preferably 15% or less, more preferably 10% or less), and the minimum transmittance for light in the wavelength range of 900 to 1300 nm is 70% or more (preferably 75% or more, more preferably 80% or more). A film having such spectral characteristics can block light in the wavelength range of 400 to 750 nm and transmit light with wavelengths longer than 850 nm. (3): A film having a maximum transmittance of 20% or less (preferably 15% or less, more preferably 10% or less) for light in the wavelength range of 400 to 830 nm in the thickness direction of the film, and a minimum transmittance of 70% or more (preferably 75% or more, more preferably 80% or more) for light in the wavelength range of 1000 to 1300 nm. A film having such spectral characteristics can block light in the wavelength range of 400 to 830 nm and transmit light with wavelengths longer than 940 nm. (4): A film having a maximum transmittance of 20% or less (preferably 15% or less, more preferably 10% or less) for light in the wavelength range of 400 to 950 nm in the thickness direction of the film, and a minimum transmittance of 70% or more (preferably 75% or more, more preferably 80% or more) for light in the wavelength range of 1100 to 1300 nm. A film having such spectral characteristics can block light in the wavelength range of 400 to 950 nm and transmit light with a wavelength of more than 1040 nm.

[0154] <Pixel manufacturing method> Next, a pixel manufacturing method using the colored composition of the present invention will be described. The pixel manufacturing method preferably includes a step of forming a colored composition layer on a support using the colored composition of the present invention, a step of patternwise exposing the colored composition layer, and a step of developing and removing the unexposed areas of the colored composition layer to form a pattern (pixel). If necessary, a step of baking the colored composition layer (pre-baking step) and a step of baking the developed pattern (pixel) (post-baking step) may be provided.

[0155] In the step of forming a coloring composition layer, a coloring composition layer is formed on a support using the coloring composition of the present invention. The support is not particularly limited and can be appropriately selected depending on the application. Examples include a glass substrate and a silicon substrate, with a silicon substrate being preferred. The silicon substrate may also be formed with a charge-coupled device (CCD), a complementary metal-oxide semiconductor (CMOS), a transparent conductive film, or the like. A black matrix is ​​sometimes formed on the silicon substrate to isolate each pixel. The silicon substrate may also be provided with a base layer to improve adhesion with an upper layer, prevent diffusion of substances, or flatten the substrate surface. The surface contact angle of the base layer is preferably 20 to 70° when measured with diiodomethane. It is also preferably 30 to 80° when measured with water.

[0156] As a method for applying the coloring composition, a known method can be used. For example, the application method described in paragraph 0207 of WO 2022 / 085485 can be used.

[0157] The colored composition layer formed on the support may be dried (prebaked). When a film is produced by a low-temperature process, prebaking may not be performed. When prebaking is performed, the prebaking temperature is preferably 150°C or lower, more preferably 120°C or lower, and even more preferably 110°C or lower. The lower limit can be, for example, 50°C or higher, or can also be 80°C or higher. The prebaking time is preferably 10 to 300 seconds, more preferably 40 to 250 seconds, and even more preferably 80 to 220 seconds. Prebaking can be performed using a hot plate, an oven, or the like.

[0158] Next, the coloring composition layer is exposed to light in a pattern (exposure step). For example, the coloring composition layer can be exposed to light in a pattern by using a stepper exposure machine, a scanner exposure machine, or the like, through a mask having a predetermined mask pattern. This allows the exposed portion to be cured.

[0159] Examples of radiation (light) that can be used for exposure include g-rays and i-rays. Light with a wavelength of 300 nm or less (preferably light with a wavelength of 180 to 300 nm) can also be used. Examples of light with a wavelength of 300 nm or less include KrF rays (wavelength 248 nm) and ArF rays (wavelength 193 nm), with KrF rays (wavelength 248 nm) being preferred. Long-wave light sources of 300 nm or more can also be used. As the light source, an electrodeless ultraviolet lamp system or a hybrid curing method using ultraviolet and infrared rays can be used.

[0160] The exposure may be performed by continuous irradiation with light or by pulsed irradiation (pulse exposure), which is an exposure method in which light irradiation and pauses are repeated in short cycles (e.g., milliseconds or less).

[0161] The irradiation amount (exposure amount) is, for example, 0.03 to 2.5 J / cm ２ is preferred, and 0.05 to 1.0 J / cm ２ The oxygen concentration during exposure can be appropriately selected. In addition to being performed in the atmosphere, exposure may be performed in a low-oxygen atmosphere with an oxygen concentration of 19% by volume or less (e.g., 15% by volume, 5% by volume, or substantially oxygen-free), or in a high-oxygen atmosphere with an oxygen concentration of more than 21% by volume (e.g., 22% by volume, 30% by volume, or 50% by volume). The exposure illuminance can be appropriately set, and is usually 1000 W / m ２ ~100000W / m ２ (For example, 5000 W / m ２ , 15000W / m ２ , or 35,000 W / m ２The oxygen concentration and exposure illuminance may be appropriately combined. For example, an oxygen concentration of 10% by volume and an illuminance of 10,000 W / m ２ , oxygen concentration 35% by volume, illuminance 20,000 W / m ２ etc.

[0162] Next, the unexposed portions of the coloring composition layer are developed and removed to form a pattern (pixels). The unexposed portions of the coloring composition layer can be developed and removed using a developer. As a result, the unexposed portions of the coloring composition layer in the exposure step are dissolved into the developer, leaving only the photocured portions. The temperature of the developer is preferably, for example, 20 to 30°C. The development time is preferably 20 to 180 seconds. In addition, to improve residue removability, the process of shaking off the developer every 60 seconds and then supplying fresh developer may be repeated several times.

[0163] Examples of the developer include organic solvents and alkaline developers, and alkaline developers are preferably used. Regarding the developer and the washing (rinsing) method after development, the developer and washing method described in paragraph 0214 of WO 2022 / 085485 can be used.

[0164] After development and drying, it is preferable to perform additional exposure treatment or heating treatment (post-baking). The additional exposure treatment or post-baking is a post-development curing treatment to ensure complete curing. The heating temperature in post-baking is, for example, preferably 100 to 300°C, more preferably 200 to 270°C. Post-baking can be performed continuously or batchwise using a heating means such as a hot plate, convection oven (hot air circulation dryer), or high-frequency heater to achieve the above conditions for the developed film. When additional exposure treatment is performed, it is preferable that the light used for exposure has a wavelength of 400 nm or less. The additional exposure treatment may also be performed by the method described in Korean Patent Publication No. 10-2017-0122130.

[0165] <Optical Filter> The optical filter of the present invention has the above-described film of the present invention. Types of optical filters include color filters and infrared transmission filters, and color filters are preferred. Color filters preferably have the film of the present invention as colored pixels of the color filter.

[0166] The optical filter may have a protective layer provided on the surface of the film of the present invention. By providing a protective layer, various functions can be imparted, such as oxygen blocking, low reflectivity, hydrophilicity / hydrophobicity, and blocking of light of specific wavelengths (ultraviolet rays, infrared rays, etc.). The thickness of the protective layer is preferably 0.01 to 10 μm, more preferably 0.1 to 5 μm. Methods for forming the protective layer include a method of applying a resin composition dissolved in an organic solvent, a chemical vapor deposition method, and a method of attaching a molded resin with an adhesive. Components constituting the protective layer include (meth)acrylic resin, ene-thiol resin, polycarbonate resin, polyether resin, polyarylate resin, polysulfone resin, polyethersulfone resin, polyphenylene resin, polyarylene ether phosphine oxide resin, polyimide resin, polyamideimide resin, polyolefin resin, cyclic olefin resin, polyester resin, styrene resin, polyol resin, polyvinylidene chloride resin, melamine resin, urethane resin, aramid resin, polyamide resin, alkyd resin, epoxy resin, modified silicone resin, fluororesin, polycarbonate resin, polyacrylonitrile resin, cellulose resin, Si, C, W, and Al. ２ O ３ , Mo, SiO ２ , Si ２ N ４ For example, in the case of a protective layer intended to block oxygen, the protective layer may contain a polyol resin and SiO ２ and Si ２ N ４ In the case of a protective layer intended to reduce reflection, the protective layer preferably contains a (meth)acrylic resin and a fluorine resin.

[0167] When forming a protective layer by applying a resin composition, known methods such as spin coating, casting, screen printing, and inkjet printing can be used as the method for applying the resin composition. Known organic solvents (e.g., propylene glycol 1-monomethyl ether 2-acetate, cyclopentanone, ethyl lactate, etc.) can be used as the organic solvent contained in the resin composition. When forming the protective layer by chemical vapor deposition, known chemical vapor deposition methods (thermal chemical vapor deposition, plasma chemical vapor deposition, photochemical vapor deposition) can be used as the chemical vapor deposition method.

[0168] The protective layer may contain additives such as organic or inorganic fine particles, absorbers for light of specific wavelengths (e.g., ultraviolet light, infrared light, etc.), refractive index adjusters, antioxidants, adhesives, and surfactants, as needed. Examples of organic or inorganic fine particles include polymeric fine particles (e.g., silicone resin fine particles, polystyrene fine particles, and melamine resin fine particles), titanium oxide, zinc oxide, zirconium oxide, indium oxide, aluminum oxide, titanium nitride, titanium oxynitride, magnesium fluoride, hollow silica, silica, calcium carbonate, and barium sulfate. Known absorbers for light of specific wavelengths can be used. The content of these additives can be adjusted as appropriate, but is preferably 0.1 to 70% by mass, and more preferably 1 to 60% by mass, of the total mass of the protective layer.

[0169] As the protective layer, the protective layers described in paragraphs 0073 to 0092 of JP-A-2017-151176 can also be used.

[0170] The optical filter may have a structure in which each pixel is embedded in a space partitioned by partition walls, for example, in a grid pattern.

[0171] <Solid-state imaging device> The solid-state imaging device of the present invention has the above-described film of the present invention. The configuration of the solid-state imaging device is not particularly limited as long as it has the film of the present invention and functions as a solid-state imaging device, but examples thereof include the following configurations.

[0172] The substrate includes a plurality of photodiodes constituting a light-receiving area of ​​a solid-state imaging device (such as a CCD (charge-coupled device) image sensor or a CMOS (complementary metal-oxide semiconductor) image sensor) and transfer electrodes made of polysilicon or the like. A light-shielding film is formed on the photodiodes and transfer electrodes, with only the light-receiving portions of the photodiodes exposed. A device protection film made of silicon nitride or the like is formed on the light-shielding film so as to cover the entire light-shielding film and the light-receiving portions of the photodiodes. A color filter is also provided on the device protection film. Furthermore, the device protection film may include a light-collecting means (e.g., a microlens, etc.; the same applies hereinafter) below the color filter (on the side closer to the substrate), or on the color filter. The color filter may have a structure in which each color pixel is embedded in a space partitioned by partition walls, for example, in a grid pattern. In this case, the partition walls preferably have a lower refractive index than the color pixels. Examples of imaging devices having such a structure include those described in JP 2012-227478 A, JP 2014-179577 A, and WO 2018 / 043654 A. Furthermore, as shown in JP 2019-211559 A, an ultraviolet absorbing layer may be provided within the structure of the solid-state imaging element to improve light resistance. An imaging device equipped with the solid-state imaging element of the present invention can be used for digital cameras, electronic devices with imaging functions (such as mobile phones), as well as in-vehicle cameras and surveillance cameras.

[0173] <Image Display Device> The image display device of the present invention has the above-described film of the present invention. Examples of image display devices include liquid crystal display devices and organic electroluminescence display devices. Definitions of image display devices and details of each image display device are described, for example, in "Electronic Display Devices" (written by Akio Sasaki, published by Kogyo Chosakai Co., Ltd. in 1990) and "Display Devices" (written by Nobuaki Ibuki, published by Sangyo Tosho Co., Ltd. in 1989). Liquid crystal display devices are described, for example, in "Next Generation Liquid Crystal Display Technology" (edited by Tatsuo Uchida, published by Kogyo Chosakai Co., Ltd. in 1994). There are no particular limitations on the liquid crystal display device to which the present invention can be applied, and the present invention can be applied to various types of liquid crystal display devices described in the above-mentioned "Next Generation Liquid Crystal Display Technology."

[0174] The present invention will be explained in more detail below with reference to examples. The materials, amounts used, ratios, treatment details, treatment procedures, etc. shown in the following examples can be changed as appropriate without departing from the spirit of the present invention. In addition, Me in the structural formulas represents a methyl group, Et represents an ethyl group, and iPr represents an isopropyl group.

[0175] (Synthesis Example 1-1) Synthesis of Phthalocyanine Compound (Pc003-Zn) 6.46 g (2 equivalents) of 2,3-dicyanopyridine, 6.41 g (2 equivalents) of phthalonitrile, 21.59 g of triethyl orthoacetate, 125 mL of diethylene glycol, and 0.85 g of acetic acid were added to a flask and mixed. The mixture was heated to 115°C and stirred for 30 minutes, and the reaction solution was cooled to 105°C. 27.83 g of ammonium benzoate and 3.41 g (1 equivalent) of zinc chloride were added thereto, and the reaction solution was heated to 115°C and stirred for 8 hours. Thereafter, the reaction solution was cooled to 60°C, and 10 mL of concentrated hydrochloric acid was added dropwise, followed by the addition of 42 mL of isopropyl alcohol. The reaction solution was then cooled to 25°C, and the precipitated crude crystals were collected by filtration. 300 mL of acetone and the collected crude crystals were added to the flask, stirred under reflux for 1 hour, and then heated to 25°C. The crystals were then collected by filtration and dried under air at 50°C for 18 hours to obtain 10.3 g of Pc003-Zn. [M+H] was determined by MALDI-MS (Matrix Assisted Laser Desorption / Ionization Mass Spectrometry). ＋ It was confirmed that the component with 579.07 was the main component.

[0176] (Synthesis Examples 1-2 to 1-17) Synthesis of phthalocyanine compounds (Pc001-Zn), (Pc002-Zn), (Pc004-Zn) to (Pc017-Zn) Phthalocyanine compounds (Pc001-Zn), (Pc002-Zn), (Pc004-Zn) to (Pc017-Zn) were synthesized in the same manner as in Synthesis Example 1-1, except that the types and blending amounts of the raw materials used were appropriately adjusted.

[0177] (Synthesis Examples 2-1 to 2-17) Synthesis of phthalocyanine compounds (Pc001-Co) to (Pc017-Co) Phthalocyanine compounds (Pc001-Co) to (Pc017-Co) were synthesized in the same manner as in Synthesis Examples 1-1 to 1-17, except that zinc chloride was changed to cobalt(II) chloride.

[0178] Pc001-Zn to Pc017-Zn and Pc001-Co to Pc017-Co are compounds having the structures shown below. In the formulas below, M represents a zinc atom (Zn) or a cobalt atom (Co). Therefore, Pc001-Zn to Pc017-Zn are compounds in which M in Pc001-M to Pc017-M shown below is a zinc atom (Zn), and Pc001-Co to Pc017-Co are compounds in which M in Pc001-M to Pc017-M shown below is a cobalt atom (Co). Pc001-Zn to Pc017-Zn and Pc001-Co to Pc017-Co are all blue pigments, and when the absorption intensity in the wavelength range of 400 to 700 nm was normalized by the absorption intensity at the maximum absorption wavelength in the wavelength range of 550 to 700 nm, the absorption intensity at a wavelength of 400 nm was less than 0.3.

[0179]

[0180] <Production of resin solution> [Production Example 1-1] Production of resin solution (B-1) A separable flask equipped with a cooling tube was prepared as a reaction vessel, and on the other hand, as a monomer dropping vessel, 162.38 parts by mass of benzyl methacrylate (hereinafter referred to as "BzMA"), 34.00 parts by mass of methacrylic acid (hereinafter referred to as "MAA"), 2,2'-azobis (2-methylpropionate) dimethyl (low metal grade) (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd. "V-601HP") 6.06 parts by mass, 435 parts by mass of cyclohexanone, 5.33 parts by mass of n-dodecanethiol (hereinafter referred to as "n-DM") was prepared with thorough stirring and mixing. 49 parts by mass of cyclohexanone was charged into the reaction vessel, and after nitrogen substitution, the temperature of the reaction vessel was heated in an oil bath with stirring to 75 ° C. After the temperature of the reaction vessel stabilized at 75°C, dropwise addition from the monomer dropping vessel to the reaction vessel began. The dropwise addition was carried out over 150 minutes while maintaining the temperature at 75°C. 120 minutes after the end of the dropwise addition, the temperature was raised to 90°C and the reaction vessel was then cooled to room temperature. After maintaining 90°C for 2 hours, the reaction solution was cooled to room temperature. After the polymerization reaction was completed, 3.09 parts by mass of N,N-dimethyldodecylamine as an amine compound and 0.5 parts by mass of p-methoxyphenol as a polymerization inhibitor were added in air, followed by the addition of 37.43 parts by mass of glycidyl methacrylate and 96 parts by mass of cyclohexanone. Thereafter, the temperature of the reaction solution was raised to 90°C and the reaction vessel was then maintained at 90°C for 6 hours, after which the reaction solution was cooled to room temperature. The cooled reaction solution was poured into a mixture of 10,000 parts by mass of methanol and 2,500 parts by mass of water, and the precipitated solid (polymer) was collected by filtration. The collected solid was washed twice with 500 parts by mass of water. The washed solid was dried with air at 50°C for 18 hours to obtain Resin B-1 having the following structure. The resulting Resin B-1 had a weight average molecular weight (Mw) of 12,000, an acid value of 32 mgKOH / g, and a C=C value of 1.13 mmol / g.

[0181] Resin B-1 obtained by the above procedure was added to propylene glycol monomethyl ether acetate (hereinafter abbreviated as "PGMEA") to produce a resin solution (B-1) so that the resin concentration (solid content concentration) of the final resin solution would be 30%.

[0182] [Production Example 1-2] Production of resin solution (B-2) A separable flask equipped with a cooling tube was prepared as a reaction vessel, and on the other hand, as a monomer dropping vessel, 30.7 parts by mass of dimethyl-2,2'-[oxybis (methylene)] bis-2-propenoate, 43.1 parts by mass of MAA, 14.3 parts by mass of methyl methacrylate (hereinafter abbreviated as "MMA"), 113.5 parts by mass of BzMA, 4 parts by mass of benzoyl peroxide, 60 parts by mass of diethylene glycol dimethyl ether (hereinafter referred to as "DMDG") was prepared by stirring and mixing, and as a chain transfer agent dropping vessel, 8 parts by mass of n-DM, 32 parts by mass of DMDG was prepared by stirring and mixing. 375 parts by mass of DMDG was charged into the reaction vessel, and after nitrogen substitution, the temperature of the reaction vessel was heated in an oil bath with stirring and raised to 90 ° C. After the temperature of the reaction vessel stabilized at 90°C, dropwise addition from the monomer dropping vessel and the chain transfer agent dropping vessel to the reaction vessel began. The dropwise addition was carried out over 135 minutes, while maintaining the temperature at 90°C. Sixty minutes after the end of the dropwise addition, the temperature was raised to 110°C. After maintaining 110°C for three hours, a gas inlet tube was attached to the separable flask, and bubbling of a 5 / 95 (v / v) oxygen / nitrogen mixed gas began. Next, 50.9 parts by mass of glycidyl methacrylate, 0.4 parts by mass of 2,2'-methylenebis(4-methyl-6-t-butylphenol) (hereinafter referred to as "MBMTB"), and 0.8 parts by mass of triethylamine (hereinafter referred to as "TEA") were charged into the reaction vessel, and the reaction was allowed to proceed at 110°C for three hours. After confirming the completion of the reaction by measuring the acid value of the reaction solution, 155 parts by mass of DMDG was added to the reaction solution, and the solution was cooled to room temperature. To the cooled reaction solution, 1,000 parts by mass of water was added, and the precipitated solid (polymer) was collected by filtration. The collected solid was washed twice with 100 parts by mass of ethanol and once with 500 parts by mass of water to obtain Resin B-2 having the following structure. The resulting Resin B-2 had a weight average molecular weight (Mw) of 18,000, an acid value of 32 mgKOH / g, and a C═C value of 1.42 mmol / g.

[0183] Resin B-2 obtained by the above procedure was added to PGMEA to produce a resin solution (B-2) so that the resin concentration (solid content concentration) of the final resin solution would be 30%.

[0184] [Production Example 1-3] Production of Resin Solution (B-3) A mixture was obtained by introducing 30.4 parts by mass of a macromonomer represented by the following formula (MM), 51 parts by mass of ω-carboxy-polycaprolactone monoacrylate (Aronix M-5300, manufactured by Toagosei Co., Ltd.), and PGMEA into a three-neck flask. The mixture was stirred while blowing in nitrogen. Next, while flowing nitrogen gas into the flask, the mixture was heated to 75°C. Next, 0.82 parts by mass of n-DM and then 0.43 parts by mass of 2,2'-azobis(methyl 2-methylpropionate) (V-601, manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.) were added to the mixture to initiate the polymerization reaction. After heating the mixture at 75°C for 2 hours, an additional 0.43 parts by mass of 2,2'-azobis(methyl 2-methylpropionate) was added to the mixture. After 2 hours, an additional 0.43 parts by mass of 2,2'-azobis(methyl 2-methylpropionate) was added to the mixture. After reacting for another 2 hours, the mixture was heated to 90°C and stirred for 3 hours. The polymerization reaction was completed by the above operation. After the polymerization reaction was completed, 9.6 parts by mass of dimethyldodecylamine as an amine compound and 0.3 parts by mass of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) as a polymerization inhibitor were added under air, followed by the dropwise addition of 9 parts by mass of 4-hydroxybutyl acrylate glycidyl ether (4HBAGE). After the dropwise addition, the reaction was continued under air at 90°C for 24 hours, after which the completion of the reaction was confirmed by acid value measurement, and the reaction solution was cooled to room temperature. 1,000 parts by mass of water was added to the cooled reaction solution, and the precipitated solid (polymer) was collected by filtration. The collected solid was washed twice with 100 parts by mass of ethanol and once with 500 parts by mass of water to obtain Resin B-3 having the following structure. The weight average molecular weight (Mw) of the resulting Resin B-3 was 17,200, the acid value was 70 mgKOH / g, and the C═C value was 0.50 mmol / g.

[0185] Resin B-3 obtained by the above procedure was added to PGMEA to produce a resin solution (B-3) so that the resin concentration (solid content concentration) of the final resin solution would be 30%.

[0186] [Production Example 1-4] Production of resin solution (B-4) A reaction vessel equipped with a gas inlet tube, a thermometer, a condenser, and a stirrer was charged with 8 parts by mass of 3-mercapto-1,2-propanediol, 12 parts by mass of pyromellitic anhydride, 80 parts by mass of PGMEA, and 0.2 parts by mass of monobutyltin oxide as a catalyst. After purging with nitrogen gas, the reaction was carried out at 120 ° C. for 5 hours (first step). It was confirmed that 95% or more of the acid anhydride was half-esterified by measuring the acid value. Next, 30 parts by mass of methyl methacrylate, 10 parts by mass of t-butyl acrylate, 10 parts by mass of ethyl acrylate, 5 parts by mass of methacrylic acid, 10 parts by mass of benzyl methacrylate, and 35 parts by mass of 2-hydroxyethyl methacrylate were charged, and the reaction vessel was heated to 80 ° C., and 1 part by mass of 2,2'-azobis(2,4-dimethylvaleronitrile) was added, and the reaction was carried out for 12 hours (second step). Solid content measurement confirmed that 95% had reacted. Next, the atmosphere in the flask was purged with air, and 35.0 parts by mass of 2-methacryloyloxyethyl isocyanate and 0.1 parts by mass of hydroquinone were added, followed by a reaction at 70°C for 4 hours (third step). After confirming the disappearance of the peak at 2270 cm-1 due to isocyanate groups by infrared absorption spectroscopy, the reaction solution was cooled to obtain Resin B-4 having the following structure. The resulting Resin B-4 had an acid value of 40 mgKOH / g, a weight-average molecular weight of 12,000, and a C=C value of 1.44 mmol / g. In formula (B-4), either *1 or *2 is bonded to *5 or *6 to form a polyester main chain, and the other is bonded to *3 or *4 to form a polyester main chain. Either *3 or *4 is bonded to *1 or *2 to form a polyester main chain, and the other is bonded to an OH group to form a carboxylic acid. Either *5 or *6 is bonded to *1 or *2 to form a polyester main chain, and the other is bonded to an OH group to form a carboxylic acid. Resin B-4 obtained by the above procedure was added to PGMEA to produce a resin solution (B-4) so ​​that the resin concentration (solids concentration) of the final resin solution obtained was 30%.

[0187] <Production of Micronized Pigment> [Production Example 2-1] (Production of Micronized Pigment (PV23M)) 100 parts by mass of C.I. Pigment Violet 23 ("LIONOGEN VIOLET RL" manufactured by Toyocolor Co., Ltd.), 1,200 parts by mass of sodium chloride, and 120 parts by mass of diethylene glycol were charged into a stainless steel 1-gallon kneader (manufactured by Inoue Seisakusho Co., Ltd.) and kneaded at 60°C for 4 hours. The resulting kneaded composition was added to 3,000 parts by mass of warm water and stirred for 1 hour to form a slurry. The slurry was filtered and washed repeatedly with water to remove the sodium chloride and diethylene glycol, and then dried at 80°C overnight to obtain a micronized pigment (PV23M). The average primary particle diameter of the micronized pigment (PV23M) was 20 to 30 nm. The average primary particle diameter of the pigment was determined by determining the projected area of ​​the primary particles of the pigment using a transmission electron microscope, calculating the corresponding circle-equivalent diameter as the primary particle diameter, and then calculating the arithmetic mean value of the primary particle diameters of 400 primary particles of the pigment.

[0188] [Production Examples 2-2 to 2-11] Each micronized pigment was obtained by the same process as in Production Example 2-1, except that the pigment used in Production Example 2-1 was changed from C.I. Pigment Violet 23 to the pigment shown in the table below. The average primary particle diameter of each micronized pigment is as follows.

[0189]

[0190] <Preparation of Pigment Dispersion> The materials listed in the table below were mixed and then dispersed for 3 hours using zirconia beads with a diameter of 0.5 mm in an Eiger mill (Mini Model M-250 MKII, manufactured by Eiger Japan Co., Ltd.) The resulting mixture was then filtered through a filter with a pore size of 5.0 μm to prepare a pigment dispersion.

[0191]

[0192] The details of the materials listed in the table are as follows:

[0193] (Fine Pigments) Pc001-ZnM, Pc001-CoM, Pc003-ZnM, Pc003-CoM, Pc009-ZnM, Pc015-ZnM, Pc017-ZnM, PV23M, PB15:6M, PV37M, PV-PBM: the above-mentioned fine pigments Pc001-ZnM, Pc001-CoM, Pc003-ZnM, Pc003-CoM, Pc009-ZnM, Pc015-ZnM, Pc017-ZnM, PV23M, PB15:6M, PV37M, PV-PBM

[0194] (Pigment derivatives) Derivatives 1 and 2: Compounds having the following structures

[0195] (Resin solutions) B-3 and B-4: Resin solutions B-3 and B-4 described above

[0196] (Solvent) S-1: Propylene glycol monomethyl ether acetate

[0197] <Preparation of Colored Composition> The materials shown in the table below were mixed in the ratios shown in the table below, stirred, and then filtered through a nylon filter with a pore size of 0.45 μm (manufactured by Nippon Pall Co., Ltd.) to prepare a colored composition.

[0198]

[0199] Details of the materials listed in the table above are as follows:

[0200] (Pigment dispersions) PD-1 to PD-7, PDB-1, PDV-1 to PDV-3: the above-mentioned pigment dispersions PD-1 to PD-7, PDB-1, PDV-1 to PDV-3

[0201] (Dye) XAN-1: Compound having the following structure (xanthene dye, weight average molecular weight 21,000) XAN-2: Compound having the following structure (xanthene dye, weight-average molecular weight 11,000) XAN-3: Compound having the following structure (xanthene dye) PM-1: Compound having the following structure (pyrromethene dye)

[0202] (Resin solution) B-1: Resin solution B-1 described above B-2: Resin solution B-2 described above

[0203] (Polymerizable Compounds) M-1: Aronix M-305 (manufactured by Toagosei Co., Ltd., a mixture of pentaerythritol triacrylate and pentaerythritol tetraacrylate, the content of pentaerythritol triacrylate being 55% by mass to 63% by mass) M-2: KAYARAD RP-1040 (manufactured by Nippon Kayaku Co., Ltd., ethylene oxide-modified pentaerythritol tetraacrylate) M-3: Aronix M-510 (manufactured by Toagosei Co., Ltd., polybasic acid-modified acrylic oligomer)

[0204] (Photopolymerization initiator) I-1: Compound having the following structure I-2: NCI-730 (manufactured by ADEKA Corporation) I-3: Compound having the following structure

[0205] (Ultraviolet absorber) U-1: Uvinul 3050 (manufactured by BASF)

[0206] (Polymerization inhibitor) IN-1: p-methoxyphenol

[0207] (Surfactant) W-1: Compound having the following structure (number average molecular weight 1800)

[0208] (Solvent) S-1: Propylene glycol monomethyl ether acetate

[0209] <Evaluation of storage stability> The viscosity of the colored composition obtained above was measured using "RE-85L" manufactured by Toki Sangyo Co., Ltd., and then the colored composition was left to stand at 45°C for 3 days, and the viscosity was measured again. The storage stability was evaluated from the difference in viscosity (ΔVis) before and after standing according to the following evaluation criteria. It can be said that the smaller the viscosity difference (ΔVis) value, the better the storage stability. The viscosity of the colored composition was measured in a state where the temperature was adjusted to 25°C. The evaluation criteria were as follows, and the evaluation results are shown in the table below. [Evaluation criteria] A: ΔVis is 0.5 mPa·s or less B: ΔVis is more than 0.5 mPa·s and 2.0 mPa·s or less C: ΔVis is more than 2.0 mPa·s

[0210] <Evaluation of Rectangularity> CT-4000L (manufactured by FUJIFILM Electronic Materials Co., Ltd.) was applied to an 8-inch (20.32 cm) silicon wafer using a spin coater so that the thickness after post-baking would be 0.1 μm, and the wafer was heated at 220°C for 300 seconds using a hot plate to form an undercoat layer, thereby obtaining a silicon wafer (support) with an undercoat layer. Next, each coloring composition was applied by spin coating so that the film thickness after post-baking would be 0.5 μm. Next, the wafer was heated at 100°C for 2 minutes using a hot plate. Next, the obtained composition layer was exposed to light (KrF line) with a wavelength of 248 nm through a mask having a 0.5 μm square pattern using a KrF scanner exposure machine at an illuminance of 35,000 W / m ２ , exposure dose 200 mJ / cm ２ The silicon wafer on which the exposed coating film was formed was placed on the horizontal rotating table of a spin-shower developer (DW-30 model, manufactured by Chemitronics Corporation), and puddle development was performed for 60 seconds at 23°C using a 60% diluted solution of CD-2000 (manufactured by Fujifilm Electronic Materials Co., Ltd.), forming a colored pattern on the silicon wafer. The silicon wafer on which the colored pattern was formed was fixed to the horizontal rotating table using a vacuum chuck system, and while the silicon wafer was rotated at a rotation speed of 50 rpm using a rotation device, pure water was supplied in a shower-like manner from a spray nozzle from above the center of rotation to perform a rinse treatment, and then spray-dried. Furthermore, a heat treatment (post-bake) was performed for 300 seconds using a hot plate at 200°C to form a colored pattern (pixel). The cross section of the prepared pixel was observed with a scanning electron microscope, and the angle of the pixel sidewall relative to the silicon wafer surface was measured, and the rectangularity was evaluated using the following evaluation criteria. [Evaluation Criteria] AA: The angle of the pixel sidewall is 80° or more and less than 100°. A: The angle of the pixel sidewall is 75° or more and less than 80°, or 100° or more and less than 105°. B: The angle of the pixel sidewall is 70° or more and less than 75°, or 105° or more and less than 110°. C: The angle of the pixel sidewall is less than 70°, or 110° or more.

[0211] <Evaluation of Spectral Characteristics> Each coloring composition was applied to a glass substrate by spin coating so that the film thickness after post-baking would be 0.5 μm. Then, the substrate was heated at 100° C. for 2 minutes using a hot plate. Next, the obtained composition layer was irradiated with light (KrF ray) having a wavelength of 248 nm at an illuminance of 35,000 W / m using a KrF scanner exposure device. ２ , exposure dose 200 mJ / cm ２ The film was then exposed to light at 1000 W. Then, a heat treatment (post-baking) was carried out for 300 seconds using a hot plate at 200°C to form a film. The transmittance of the film at wavelengths of 400 to 700 nm was measured using a spectrophotometer (U-4100, manufactured by Hitachi High-Tech Corporation).

[0212] [Evaluation criteria for transmittance at wavelength 450 nm] A: Transmittance at 450 nm is 80% or more B: Transmittance at 450 nm is 75% or more but less than 80% C: Transmittance at 450 nm is less than 75%

[0213] [Evaluation criteria for shielding properties for wavelengths of 600 to 700 nm] A: The maximum transmittance in the wavelength range of 600 to 700 nm is less than 3%. B: The maximum transmittance in the wavelength range of 600 to 700 nm is 3% or more but less than 5%. C: The maximum transmittance in the wavelength range of 600 to 700 nm is 5% or more.

[0214]

[0215] As shown in the above table, the examples had good shielding properties for wavelengths of 600 to 700 nm and were excellent in spectral characteristics.

[0216] For the colored composition of Example 13, films having thicknesses of 0.45 μm and 0.4 μm were prepared by adjusting the rotation speed of the spin coater, and the evaluation of the rectangularity and the spectral characteristics was carried out for each film. The evaluation results were similar to those for the film thickness of 0.5 μm.

[0217] The colored composition of Example 1 was exposed to i-line at an illuminance of 1000 W / m instead of KrF line. ２ , exposure dose 1000 mJ / cm ２ The rectangularity was evaluated by irradiating the sample with KrF rays. The evaluation results were similar to those obtained when the sample was exposed with KrF rays.

[0218] The films formed from the colored compositions of the examples can be suitably used in optical filters, solid-state imaging devices, and image display devices.

Claims

1. A coloring composition comprising a colorant and a resin, wherein the colorant comprises at least one blue pigment selected from the group consisting of cobalt phthalocyanine blue pigments and zinc phthalocyanine blue pigments.

2. The coloring composition according to claim 1, wherein the blue pigment has an absorption intensity at a wavelength of 400 nm of less than 0.3 when the absorption intensity in the wavelength range of 400 to 700 nm is normalized by the absorption intensity at the maximum absorption wavelength in the wavelength range of 550 to 700 nm.

3. The coloring composition according to claim 1 or 2, wherein the blue pigment comprises an unsubstituted zinc phthalocyanine blue pigment.

4. The coloring composition according to claim 1 or 2, wherein the average primary particle size of the blue pigment is 3 to 200 nm.

5. The coloring composition according to claim 1 or 2, wherein the content of the blue pigment in the colorant is 40 mass % or more.

6. The coloring composition according to claim 1 or 2, wherein the colorant further comprises a copper phthalocyanine blue pigment.

7. The coloring composition according to claim 1 or 2, wherein the colorant further comprises an oxazine compound.

8. The coloring composition according to claim 1 or 2, wherein the colorant further comprises at least one selected from the group consisting of xanthene dyes and pyrromethene dyes.

9. The coloring composition according to claim 1 or 2, wherein the content of the colorant in the total solid content of the coloring composition is 50 mass % or more.

10. The coloring composition according to claim 1 or 2, further comprising a polymerizable compound and a photopolymerization initiator.

11. A film obtained by using the coloring composition according to claim 1 or 2.

12. An optical filter having the film according to claim 11.

13. A solid-state imaging device having the film according to claim 11.

14. An image display device comprising the film according to claim 11.