Black dispersion, UV-curable black composition, resin composition, materials for manufacturing electronic components, electronic components

Abstract

This black dispersion liquid contains a solvent, black pigments, and a dispersant. The black pigments are black particles containing zirconium nitride. The black particles have a 50%-cumulative distribution size in the range of 30-120 nm as measured using a transmission electron microscope, and a 90%-cumulative distribution size of 200 nm or less as measured using the transmission electron microscope.

Description

[Technical Field] 【0001】 The present invention relates to a black dispersion, an ultraviolet-curable black composition, a resin composition, a material for manufacturing electronic components, and an electronic component. This application claims priority based on Japanese Patent Application No. 2022-197146, filed in Japan on December 9, 2022, and the contents of that application are incorporated herein by reference. [Background technology] 【0002】 Insulating black pigments are used, for example, as black matrices in color filters for display devices, as light-shielding materials in CMOS camera modules, and as optical adhesives. Dispersions containing black pigments are also used as materials for forming black patterns, such as black resists and black inks for inkjet printers. As a black resist, a UV-curable black composition containing an insulating black pigment and an UV-curable organic substance is known. 【0003】 A UV-curable black composition is known that uses zirconium nitride particles as an insulating black pigment and acrylic monomer or epoxy monomer as an UV-curable organic material. It is also known that dispersants and plasticizers may be added to the UV-curable black composition (Patent Document 1). [Prior art documents] [Patent Documents] 【0004】 [Patent Document 1] Japanese Patent Publication No. 2021-38119 [Overview of the project] [Problems that the invention aims to solve] 【0005】 With the increasing resolution of display devices and the miniaturization of electronic devices in recent years, there is a demand for fine black matrices, light-shielding materials, and fast-curing optical adhesives. To realize fine black matrices, light-shielding materials, and fast-curing optical adhesives, it is necessary to further improve the ratio of ultraviolet light transmittance to visible light transmittance (ultraviolet light transmittance / visible light transmittance) of ultraviolet-curable black compositions. 【0006】 The present invention has been made in view of the circumstances described above, and aims to provide a black dispersion capable of improving the ratio of ultraviolet light transmittance to visible light transmittance, an ultraviolet-curable black composition containing the black dispersion, and a resin composition obtained by curing the ultraviolet-curable black composition. Furthermore, the present invention also aims to provide a black matrix for color filters, a CMOS camera module, a material for manufacturing electronic components, and an electronic component using the ultraviolet-curable black composition. [Means for solving the problem] 【0007】 To solve the above problems, the black dispersion of embodiment 1 of the present invention contains a solvent, a black pigment, and a dispersant, wherein the black pigment is zirconium nitride. It contains 80% or more by mass, and also contains nitrides or oxides of one or more other metallic elements selected from hafnium, magnesium, and zinc. The particles are black, and the black particles have a 50% cumulative distribution diameter measured using a transmission electron microscope that is in the range of 30 nm to 120 nm, and a 90% cumulative distribution diameter measured using a transmission electron microscope that is 200 nm or less. The concentration of the black pigment was adjusted to 50 ppm by mass, and the transmittance of light at a wavelength of 550 nm was measured using a spectrophotometer. 550 Transmittance T of light with a wavelength of 365 nm 365 The ratio (T 365 / T 550 ) is 3.0 or higher The above-mentioned 90% cumulative distribution diameter is not limited, but may be 80 nm or more and 200 nm or less. 【0008】 According to the black dispersion liquid of Embodiment 1 of the present invention configured as described above, since the black pigment is black particles containing zirconium nitride, it has excellent visible light shielding properties and excellent ultraviolet light transmittance. Furthermore, the black particles are fine with a 50% cumulative distribution diameter measured using a transmission electron microscope within the above range, and since the 90% cumulative distribution diameter measured using a transmission electron microscope is not more than the above value and the content of coarse particles is small, the ratio of the ultraviolet light transmittance to the visible light transmittance is improved. 【0009】 In Embodiment 2 of the present invention, in the black dispersion liquid of Embodiment 1, the black particles are configured such that the 50% cumulative distribution diameter measured using the dynamic light scattering method is within the range of 30 nm or more and 120 nm or less, and the cumulant diameter is within the range of 130 nm or less. The cumulant diameter is not limited, but may be 60 nm or more and 130 nm or less. The 90% cumulative distribution diameter of the black particles measured using the dynamic light scattering method is not limited, but may be 60 nm or more and 198 nm or less. According to the black dispersion liquid of Embodiment 2 of the present invention, since the 50% cumulative distribution diameter measured using the dynamic light scattering method is within the above range and the 50% cumulative distribution diameter of the black particles in a state dispersed in the solvent is fine, the ratio of the ultraviolet light transmittance to the visible light transmittance is more surely improved. 【0010】 In Embodiment 3 of the present invention, in the black dispersion liquid of Embodiment 1 or Embodiment 2, the average crystallite diameter of zirconium nitride contained in the black particles is configured to be within the range of 12 nm or more and 28 nm or less. According to the black dispersion liquid of Embodiment 3 of the present invention, since the average crystallite diameter of zirconium nitride is within the above range and the crystals of zirconium nitride are fine, the ratio of the ultraviolet light transmittance to the visible light transmittance is more surely improved. 【0011】 The ultraviolet curable black composition of Embodiment 4 of the present invention is configured to include any one of the black dispersion liquids of Embodiments 1 to 3, an ultraviolet curable organic substance, and an ultraviolet curing agent. According to the ultraviolet-curable black composition of Embodiment 4 of the present invention configured as described above, since it contains the above-described black dispersion liquid, the ratio of the transmittance of ultraviolet light to the transmittance of visible light is high. Therefore, the ultraviolet-curable black composition of Embodiment 4 of the present invention is excellent in workability and rapid hardening property. Furthermore, the resin composition after curing has improved shielding property of visible light. 【0012】 Embodiment 5 of the present invention is configured to be used as a black resist in the ultraviolet-curable black composition of Embodiment 4. Since the ultraviolet-curable black composition of Embodiment 5 of the present invention has a high ratio of the transmittance of ultraviolet light to the transmittance of visible light and is excellent in workability and rapid hardening property, by using this as a black resist, it becomes possible to efficiently form a fine black resist. 【0013】 The resin composition of Embodiment 6 of the present invention is configured to be a cured product of the ultraviolet-curable black composition of Embodiment 4. According to the resin composition of Embodiment 6 of the present invention, as described above, it is a cured product obtained by curing an ultraviolet-curable black composition having a high ratio of the transmittance of ultraviolet light to the transmittance of visible light and excellent in workability and rapid hardening property, so it is possible to form a fine shape. 【0014】 The material for manufacturing an electronic component of Embodiment 7 of the present invention is configured to include at least one of the ultraviolet-curable black composition of Embodiment 4 or a cured product obtained by curing the ultraviolet-curable black composition. The material for manufacturing an electronic component of Embodiment 7 of the present invention can be used, for example, for a black matrix for a color filter, a CMOS camera module, a sealing material for a liquid crystal display element, a black column spacer, a partition material for a micro LED, a semiconductor encapsulant, an underfill material, a black paste for circuit concealment, a light-shielding solder resist, a black ultraviolet-curable ink, an optical adhesive, and the like. 【0015】 For example, according to the black matrix for color filters using the material for manufacturing electronic components of Embodiment 7, as described above, the ratio of ultraviolet light transmittance to visible light transmittance is high, and since it contains a cured product obtained by curing an ultraviolet-curable black composition that has excellent processability and rapid hardening properties, it is possible to create a fine shape. Furthermore, for example, in the CMOS camera module using the electronic component manufacturing material of Embodiment 7, the light-shielding material includes a cured product obtained by curing an ultraviolet-curable black composition that has a high ratio of ultraviolet light transmittance to visible light transmittance as described above, and is excellent in processability and rapid hardening, making it possible to create a fine shape. Therefore, it is possible to miniaturize the digital camera. 【0016】 The electronic component according to embodiment 8 of the present invention is configured to include at least one of the electronic component manufacturing material according to embodiment 7, or a cured product obtained by curing the electronic component manufacturing material. For example, the electronic component according to embodiment 8 can be used in color filters, CMOS camera modules, liquid crystal display elements, black column spacers, partitions for microLEDs, semiconductor packages (PKGs), light-shielding solder resist films, optical modules, flexible printed circuit boards, rigidflex substrates, and the like. [Effects of the Invention] 【0017】 According to the present invention, it is possible to provide a black dispersion that can improve the ratio of ultraviolet light transmittance to visible light transmittance, an ultraviolet-curable black composition containing the black dispersion, and a resin composition and an electronic component manufacturing material obtained by curing the ultraviolet-curable black composition. [Brief explanation of the drawing] 【0018】 [Figure 1] This is a cross-sectional view showing a color filter as an embodiment of the present invention. [Figure 2] This is a cross-sectional view showing a CMOS camera module as another embodiment of the present invention. [Modes for carrying out the invention] 【0019】 The following describes a black dispersion, an ultraviolet-curable black composition, a resin composition, and a material for manufacturing electronic components according to one embodiment of the present invention. 【0020】 [Black dispersion] The black dispersion of this embodiment contains a solvent, a black pigment, and a dispersant. The solvent can be a monomer having a reactive functional group in its molecule, water, or an organic solvent. Examples of monomers having a reactive functional group in its molecule include (meth)acrylic monomers having a (meth)acryloyl group, epoxy monomers having an oxirane ring such as an epoxy group or a glycidyl group, vinyl monomers having a vinyl group or a vinyl ether group, and oxetane monomers having an oxetanyl group. 【0021】 Using monomers as solvents facilitates mixing with UV-curable black compositions and eliminates the drying step that occurs when using volatile organic solvents. Furthermore, any of the solvents can be mixed with two or more other solvents, provided that the reactivity and compatibility of each monomer are not compromised. From the viewpoint of improving the dispersion efficiency of the black pigment, it is preferable to use a low-viscosity solvent with a viscosity of 100 Pa·s or less at 25°C. 【0022】 Examples of (meth)acrylic monofunctional monomers include (meth)acrylic acid, methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, octyl (meth)acrylate, isooctyl (meth)acrylate, isodecyl (meth)acrylate, lauryl (meth)acrylate, stearyl (meth)acrylate, benzyl (meth)acrylate, phenyl (meth)acrylate, phenoxyethyl (meth)acrylate, and 2-hydroxy Examples include monofunctional monomers such as ethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, isoamyl acrylate, tetrahydrofurfuryl (meth)acrylate, and isobornyl (meth)acrylate, and difunctional monomers such as 1,6-hexanediol di(meth)acrylate, 1,9-nonanediol di(meth)acrylate, neopentyl glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, ethylene oxide-modified bisphenol A di(meth)acrylate, and neopentyltriethylene glycol di(meth)acrylate. 【0023】 Examples of epoxy monomers include n-butyl glycidyl ether, 2-ethylhexyl glycidyl ether, lauryl glycidyl ether, 1,4-butanediol diglycidyl ether, neopentyl glycol diglycidyl ether, 1,6-hexanediol diglycidyl ether, allyl glycidyl ether, ethylene glycol diglycidyl ether, resorcinol diglycidyl ether, polypropylene glycol glycidyl ether, 1,4-cyclohexanedimethanol diglycidyl ether, hydrogenated bisphenol A diglycidyl ether, 1,2,5,6-diepoxyhexahydroindan, 3',3'-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, and 1,2-epoxy-4-vinylcyclohexane. 【0024】 Examples of vinyl monomers include vinyl chloride and vinyl acetate. Examples of monomers having a vinyl ether group include n-propyl vinyl ether, isopropyl vinyl ether, n-butyl vinyl ether, 2-ethylhexyl vinyl ether, n-dodecyl vinyl ether, 2-chloroethyl vinyl ether, cyclohexyl vinyl ether, 2-hydroxyethyl vinyl ether, 4-hydroxybutyl vinyl ether, diethylene glycol monovinyl ether, 1,4-cyclohexanedimethanol monovinyl ether, 1,4-butanediol divinyl ether, triethylene glycol divinyl ether, and 1,4-cyclohexanedimethanol divinyl ether. 【0025】 Examples of oxetane monomers include 2-ethylhexyloxetane, 3-ethyl-3-(hydroxymethyl)oxetane, 3-ethyl-3-(4-hydroxybutyroxymethyl)oxetane, 3-ethyl-3-[(phenoxy)methyl]oxetane, 3-ethyl-3-(hexyloxymethyl)oxetane, 3,3'-(oxybismethylene)bis(3-ethyloxetane), 3-ethyl-3-(2-ethylhexyloxymethyl)oxetane, (3-ethyl Examples include 3-3-oxetanyl)methyl methacrylate, 4,4'-bis[(3-ethyl-3-oxetanyl)methoxymethyl]biphenyl, bis[(3-ethyl-3-oxetanyl)methyl]isophthalate, 3-ethyl-3([3-ethyloxetan-3-yl]methoxy)methyloxetane, 1,6-bis(3-ethyl-3-oxetanylmethoxy)hexane, and 1,3-bis[(3-ethyl-3-oxetanylmethoxy)methyl]. 【0026】 Examples of organic solvents include glycol ethers such as ethyl carbitol, ethyl carbitol acetate, butyl carbitol acetate (BCA), butyl carbitol, methyl cellosolve, ethyl cellosolve, diethylene glycol ethyl methyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate (PGMEA), propylene glycol monoethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, α-terpineol, methyl ethyl ketone (MEK), ethyl acetate, butyl acetate, n-propanol, isopropanol, methanol, ethanol, and toluene. 【0027】 The black pigment is dispersed in a solvent as black particles. The black pigment contains zirconium nitride. The black particles in the black pigment preferably contain 80% or more by mass of zirconium nitride, and more preferably 90% or more by mass. The black particles may also be zirconium nitride particles. The black particles may contain oxygen. In addition, the black particles may contain nitrides or oxides of one or more metallic elements other than zirconium, for example, selected from hafnium, magnesium, and zinc. 【0028】 Black particles are defined as having a 50% cumulative distribution diameter (D50) measured using a transmission electron microscope (TEM) within the range of 30 nm to 120 nm, and a 90% cumulative distribution diameter (D90) measured using a transmission electron microscope of 200 nm or less. If D50 is less than 30 nm, the specific surface area of ​​the black particles becomes too large, increasing the degree of surface oxidation and potentially reducing the visible light shielding ability of the black particles. If D50 exceeds 120 nm and D90 exceeds 200 nm, the surface plasmon intensity decreases, reducing the contribution of surface plasmons to visible light shielding. Therefore, the visible light shielding ability of black particles per unit mass may decrease. 【0029】 The particle size of black particles using TEM can be measured, for example, as follows: A black dispersion is dropped onto a substrate and dried to obtain a sample for TEM observation. The obtained sample is observed using TEM, and the particle size of the primary particles is measured for 500 black particles. The particle size is defined as the maximum Ferret diameter. Using the obtained particle sizes, a volume-based cumulative distribution is created assuming the particles are perfectly spherical. From the obtained cumulative distribution, the particle size at which the cumulative distribution reaches 50% (50% cumulative distribution diameter) and the particle size at which the cumulative distribution reaches 90% (90% cumulative distribution diameter) are read. Hereinafter, in this specification, the method of measuring the particle size of black particles using TEM will be referred to as the TEM method. 【0030】 The D50 of black particles measured using the TEM method may be within the range of 30 nm to 150 nm. The D90 of black particles measured using the TEM method may be within the range of 60 nm to 300 nm. In the volume-based cumulative distribution of black particles measured using the TEM method, the content of black particles 500 nm or larger may be 0.1% or less, and the content of black particles 300 nm or larger may be 3% or less. 【0031】 The 50% cumulative distribution diameter (D50) of black particles measured using dynamic light scattering may be in the range of 30 nm to 120 nm, or in the range of 40 nm to 100 nm. The 90% cumulative distribution diameter (D90) of black particles measured using dynamic light scattering may be 200 nm or less, and more preferably in the range of 60 nm to 150 nm. The cumulant diameter measured using dynamic light scattering may be 60 nm to 140 nm. In the volume-based cumulative distribution of black particles measured using dynamic light scattering, the content of black particles 300 nm or larger may be 1% or less, and the content of black particles 250 nm or larger may be 5% or less. In dynamic light scattering, particle size is measured with the black particles dispersed in a solvent. Therefore, dynamic light scattering allows for the measurement of particle size of black particles in a state close to that of a black dispersion. 【0032】 The ratio of D50 measured using dynamic light scattering to D50 measured using TEM (dynamic light scattering D50 / TEM D50) may be in the range of 0.9 to 1.3, and more preferably in the range of 1.0 to 1.2. The ratio of D90 measured using dynamic light scattering to D90 measured using TEM (dynamic light scattering D90 / TEM D90) may be in the range of 0.7 to 1.3, and more preferably in the range of 0.8 to 1.2. 【0033】 The black particles may be single crystals or polycrystalline. The average crystallite size of the zirconium nitride contained in the black particles may be in the range of 12 nm to 28 nm, or in the range of 5 nm to 50 nm. The average crystallite size of the zirconium nitride contained in the black particles can be calculated by analyzing the X-ray diffraction pattern of the black particles using the FP (Fundamental Parameter) method or Scherrer's equation. 【0034】 Black pigments can be produced, for example, by using a method (thermite process) in which a mixture of zirconium oxide powder and a reduction catalyst is heated under a nitrogen gas atmosphere to react and reduce the zirconium oxide with nitrogen. As the reduction catalyst, for example, metallic magnesium powder can be used. Magnesium oxide powder may also be added to the metallic magnesium powder. Black particles produced using metallic magnesium as a reduction catalyst inevitably contain magnesium as an impurity. The magnesium content of the black particles may be in the range of 0.1% by mass or more and 5.0% by mass or less. Other impurities contained in the black particles may include hafnium nitrides or oxides derived from zirconium oxide, nitrogen compounds such as ammonia and nitrogen oxides, and chlorine. 【0035】 The BET specific surface area of ​​zirconium oxide powder used as a raw material for black pigment is 1 m². 2 / g or more 80m 2It may be within the range of less than / g. In addition, the average primary particle size of metallic magnesium powder measured by TEM may be within the range of 5 μm to 300 μm. 【0036】 A mixture of zirconium oxide powder, metallic magnesium powder, and additional magnesium oxide powder as needed can be obtained by mixing them at a speed of 10 to 300 rpm using a mixing device such as a pot mill. The heating temperature of the resulting mixture under a nitrogen gas atmosphere may be in the range of 650°C to 1100°C. 【0037】 Furthermore, black pigments can be produced using a plasma nanoparticle manufacturing apparatus and a method (plasma synthesis method) that reduces metallic zirconium particles or zirconium oxide particles under a nitrogen gas atmosphere. By using this plasma synthesis method, high-purity zirconium nitride particles can be obtained. 【0038】 The coarseness of black pigments can be reduced by incorporating a crushing process. The crushing process can be carried out, for example, using a bead mill. A slurry prepared by mixing 5-50% by mass of black pigment, 0.05-1.0% by mass of a dispersant, and the remainder as deionized water, can be crushed in a bead mill using beads with a diameter of 0.5-2.0 mm for a certain period of time to reduce the content of coarse particles. At this time, using beads of 0.5 mm or larger, which have high collision energy, allows for efficient crushing of particles larger than 200 nm. The crushing time in the bead mill is preferably 10-120 minutes as a residence time. Here, the residence time t is defined by equation (1). t = (vessel capacity of bead mill - volume of filled beads) / total slurry volume × circulation time (minutes) ... (1) 【0039】 The black pigment content of the black dispersion is preferably within the range of 5% by mass to 50% by mass. This range allows for stable dispersion of the black pigment. More preferably, the black pigment content is within the range of 5% by mass to 45% by mass, and particularly preferably within the range of 10% by mass to 40% by mass. 【0040】 As a dispersant, for example, an organic substance having a group that has an affinity for the black pigment (zirconium nitride) can be used. Examples of groups that have an affinity for the black pigment include secondary amine groups, tertiary amine groups, carboxylic acid groups, phosphate groups, and phosphate ester groups. As a dispersant, polymeric dispersants with molecular weights of several thousand to tens of thousands, silane coupling agents such as organotriethoxysilane and organotrimethoxysilane, and titanate coupling agents can be used. 【0041】 The dispersant content of the black dispersion is preferably within the range of 1 part by mass to 50 parts by mass per 100 parts by mass of black pigment. Having the dispersant content within this range improves the dispersibility of the black pigment. More preferably, the dispersant content is within the range of 2 parts by mass to 45 parts by mass, and particularly preferably within the range of 5 parts by mass to 40 parts by mass. 【0042】 The black dispersion may contain other additives. These other additives may include surfactants, plasticizers, leveling agents, and other rheology control agents, and multiple types of these may be used in combination. Furthermore, the black dispersion may contain polymerization inhibitors to suppress the polymerization of monofunctional and difunctional monomers. 【0043】 A black dispersion can be produced, for example, by mixing a solvent, a black pigment, and a polymer dispersant, and then dispersing the resulting mixture. Dispersion processing equipment such as a paint shaker, a bead mill, and an ultrasonic disperser can be used. 【0044】 In this embodiment, the black dispersion has the above-described configuration, and the black pigment is composed of black particles containing zirconium nitride. The black particles are fine, with a 50% cumulative distribution diameter measured using TEM that falls within the above range, and a 90% cumulative distribution diameter measured using TEM that is less than or equal to the above value, indicating a low content of coarse particles. As a result, the ratio of ultraviolet light transmittance to visible light transmittance is improved. 【0045】 Furthermore, in the black dispersion of this embodiment, if the 50% cumulative distribution diameter of the black particles measured using dynamic light scattering is within the above range, the 50% cumulative distribution diameter of the black particles in a dispersed state in the solvent, i.e., in a state close to a dispersion, is fine, so the ratio of ultraviolet light transmittance to visible light transmittance is more reliably improved. 【0046】 Furthermore, in the black dispersion of this embodiment, if the average crystallite size of the zirconium nitride contained in the black particles is within the above range, the zirconium nitride crystals are fine, and therefore the ratio of ultraviolet light transmittance to visible light transmittance is further reliably improved. 【0047】 [UV curable black composition] The UV-curable black composition of this embodiment comprises the above-mentioned black dispersion, a UV-curable organic substance, and a UV curing agent. That is, the UV-curable black composition comprises a solvent, a black pigment, a dispersant, a UV-curable organic substance, and a UV curing agent. The content of the black pigment in the UV-curable black composition is, for example, in the range of 0.1% by mass or more and 60% by mass or less. 【0048】 As UV-curable organic materials, radical polymerizable compounds, cationic polymerizable compounds, and anionic polymerizable compounds can be used. For example, as radical polymerizable compounds, oligomers having ethylenically unsaturated bonds or polyfunctional monomers having three or more ethylenically unsaturated bonds can be used. The oligomer having ethylenically unsaturated bonds may also be acrylic oligomers having two or more (meth)acryloyl groups. Acrylic oligomers are low molecular weight polymers obtained by polymerizing acrylic monofunctional monomers. Examples of acrylic oligomers include acrylic (meth)acrylate, urethane (meth)acrylate, epoxy (meth)acrylate, and polyester (meth)acrylate. The molecular weight of the acrylic oligomer may be, for example, in the range of 1,000 to 10,000 in number average molecular weight. 【0049】 The (meth)acrylate monomers and oligomers described above can be used individually or in combination of two or more. Furthermore, the acrylic oligomers are not limited to those described above, and commonly available oligomers can be used. The polyfunctional monomer having an ethylenically unsaturated bond may be an acrylic polyfunctional monomer having three or more (meth)acryloyl groups. Examples of acrylic polyfunctional monomers include pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, and trimethylolpropane tri(meth)acrylate. 【0050】 Examples of cationic polymerizable compounds include epoxy compounds and oxetane compounds. Epoxy compounds are not particularly limited as long as they have a reactive epoxy group, and examples include bisphenol A type epoxy, bisphenol F type epoxy, biphenyl type epoxy, biphenyl mixed type epoxy, naphthalene type epoxy, cresol novolac type epoxy, dicyclopentadiene type epoxy, trisphenolethane type epoxy, tetraphenolethane type epoxy, aliphatic epoxy, and alicyclic epoxy. Oxetane compounds include the aforementioned oxetane compounds and oligomers obtained by partially polymerizing them. The amount of UV-curable organic matter may be, for example, within the range of 5 parts by mass or more and 99 parts by mass or less per 100 parts by mass of the UV-curable black composition. 【0051】 As the UV curing agent, a compound that can absorb ultraviolet light, specifically light with a wavelength of 100 to 400 nm, and initiate a polymerization reaction is preferred. The UV curing agent may be, for example, a radical generator or a photoacid generator. Examples of UV curing agents include acetophenone compounds, benzophenone compounds, benzoin ether compounds, triazine compounds, phosphine oxide compounds, sulfonium compounds, iodonium compounds, and organic peroxides. Examples of acetophenone compounds include acetophenone, dimethylacetophenone, and 2-hydroxy-2-methylpropiophenone. Examples of benzophenone compounds include benzophenone and 2-chlorobenzophenone. Examples of benzoin ether compounds include benzoin and benzoin methyl ether. Examples of phosphine oxide compounds include bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide. Examples of sulfonium compounds include triphenylsulfonium tetrafluoroborate, tri-p-tolylsulfonium trifluoromethanesulfonate, diphenyl[4-(phenylthio)phenyl]sulfonium hexafluoroantimonic acid, and diphenyl[4-(phenylthio)phenyl]sulfonium hexafluorophosphate. Examples of iodonium compounds include bis(4-tert-butylphenyl)iodonium hexafluorophosphate and diphenyliodonium hexafluorophosphate. Examples of organic peroxides include benzoyl peroxide and cumene peroxide. The amount of UV curing agent should be, for example, within the range of 0.5 parts by mass to 15 parts by mass per 100 parts by mass of UV-curable organic matter. 【0052】 UV-curable black compositions may contain plasticizers. Examples of plasticizers include phosphate ester plasticizers, phthalate ester plasticizers, aliphatic-basic ester plasticizers, aliphatic dibasic acid ester plasticizers, dihydric alcohol ester plasticizers, and oxyacid ester plasticizers. Examples of phosphate ester plasticizers include tributyl phosphate and 2-ethylhexyl phosphate. Examples of phthalate ester plasticizers include dimethyl phthalate and dibutyl phthalate. Examples of aliphatic-basic ester plasticizers include butyl oleate and glycerin monooleate. Examples of aliphatic dibasic acid ester plasticizers include dibutyl adipate and di-2-ethylhexyl sebacate. Examples of dihydric alcohol ester plasticizers include diethylene glycol dibenzoate and triethylene glycol di-2-ethylbutyrate. Examples of oxyacid ester plasticizers include methyl acetylricinoleate and tributyl acetylcitrate. When a plasticizer is used, its content is, for example, within the range of 1 part by mass or more and 100 parts by mass or less per 100 parts by mass of UV-curable organic matter. 【0053】 UV-curable black compositions may contain polymerization inhibitors to improve storage stability. Examples of polymerization inhibitors include phenol derivatives such as hydroquinone, hydroquinone monomethyl ether, and t-butylphenol; benzoquinone derivatives such as benzoquinone and 2-methyl-1,4-benzoquinone; nitro compounds such as dinitrobenzene and nitrophenol; nitroso compounds such as nitrosobenzene, phenothiazine, and phenyl-t-butylnitrone; iron(III) chloride; and sulfur. These polymerization inhibitors may be used individually or in combination of two or more. When a polymerization inhibitor is used, its content should be within a range that does not inhibit curing when the UV-curable black composition is cured by UV irradiation. For example, 5.0 × 10¹⁶ per 100 parts by mass of UV-curable organic matter. -4 Mass part or more 5.0×10 -2It is within the range of parts of mass or less. 【0054】 The UV-curable black composition may contain other additives. These other additives include surfactants, leveling agents, and other rheology control agents, and multiple types of these may be used in combination. 【0055】 UV-curable black compositions can be produced, for example, by mixing a black dispersion, a UV-curable organic substance, and a UV curing agent. There are no particular restrictions on the mixing method; for example, mixing equipment such as a planetary agitator, a three-roll mill, or a kneader can be used. 【0056】 The UV-curable black composition of this embodiment, configured as described above, contains the aforementioned black dispersion, resulting in a high ratio of UV light transmittance to visible light transmittance. Therefore, the UV-curable black composition of this embodiment exhibits excellent processability and rapid hardening properties. Furthermore, the cured resin composition exhibits improved visible light shielding capabilities. 【0057】 Furthermore, in the UV-curable black composition of this embodiment, if the UV-curable organic material is an oligomer having an ethylenically unsaturated bond or a polyfunctional monomer having three or more ethylenically unsaturated bonds, these oligomers or polyfunctional monomers are highly reactive to ultraviolet light, thus increasing the sensitivity of the UV-curable black composition to ultraviolet light. 【0058】 Furthermore, the UV-curable black composition of this embodiment has a high ratio of UV light transmittance to visible light transmittance and excellent processability and rapid hardening properties. For example, by using it for black resist, it becomes possible to efficiently form fine black resist. 【0059】 [Resin composition] The resin composition of this embodiment is a cured product of the above-described curable black composition. For example, the curable black composition is applied onto a substrate to form a coating film. When the curable black composition contains a solvent that is not curable by ultraviolet rays, the solvent in the coating film is volatilized and removed. Next, the coating film is irradiated with ultraviolet rays to polymerize the ultraviolet-curable organic substances to generate a resin. As the light source of the ultraviolet rays, a halogen lamp, a metal halide lamp, a UV-LED, etc. can be used, and any light source having a wavelength that matches the absorption wavelength of the ultraviolet curing agent is not particularly limited. 【0060】 The resin composition of this embodiment configured as described above is a cured product obtained by curing an ultraviolet-curable black composition that has a high ratio of the transmittance of ultraviolet light to the transmittance of visible light and is excellent in workability and rapid curing properties as described above. Therefore, the resin composition of this embodiment can be formed into a fine shape. 【0061】 The resin composition of this embodiment has an OD value (Optical Density value, optical density), which is one of the indexes representing the light-shielding property (attenuation of transmittance) of the resin, of, for example, 2.0 or more, preferably 3.0 or more. The upper limit of the OD value is, for example, 6.0 or less. The OD value represents, in logarithm, the degree of absorption when light passes through a black film, and is defined by the following formula (2). In formula (2), I is the amount of transmitted light at the measurement wavelength, and I0 is the amount of incident light. OD value = -log 10 (I / I0) ··· (2) The OD value in the visible light region from 340 to 770 nm is defined by formula (3) according to ISO 5-3 (2009) visual. Π λ is the weighting coefficient at each wavelength defined in ISO 5-3 (2009), T λ is the transmittance at each wavelength, Π sum is the total value of the weighting coefficients. OD value = -log 10 [Σ(Π λ × T λ / Π sum )] ··· (3) The better the dispersion of black particles in the resin composition, the higher the OD value of the resin composition tends to be. 【0062】 [Materials for the manufacture of electronic components] The material for manufacturing electronic components in this embodiment includes the above-described ultraviolet-curable black composition and / or its cured product. Specific examples of materials for manufacturing electronic components include, for instance, black matrices and black column spacers for color filters, CMOS camera modules, sealing materials for liquid crystal display elements, partition materials for micro-LEDs, semiconductor encapsulants, underfill materials, black paste for circuit concealment, light-shielding solder resist, black UV-curing inks, and optical adhesives. For example, when electronic component manufacturing materials are applied as black matrices or black column spacers for color filters, such as in liquid crystal displays (LCDs) or organic EL displays, the ratio of ultraviolet light transmittance to visible light transmittance is high, as described above, and the material includes a cured product obtained by curing an ultraviolet-curable black composition that has excellent processability and rapid hardening properties. Therefore, it becomes possible to create black matrices or black column spacers for color filters in fine shapes. 【0063】 Figure 1 shows a color filter 1 as an example of an electronic component to which the present invention can be applied. This color filter 1 is formed on a substrate 2 such as glass, and consists of a color resist layer 4 having color resist portions 4R, 4G, and 4B that transmit red, green, and blue light, respectively, a black matrix layer 8 that prevents mixing of colors and light leakage between adjacent color resist portions 4R, 4G, and 4B, and a transparent conductive film 6 such as ITO that covers them. A photospacer 10 is formed in the area corresponding to the black matrix layer 8. The black matrix layer 8 is formed of the electronic component manufacturing material of the present invention, which makes it possible to miniaturize the pattern of the black matrix layer 8. 【0064】 Furthermore, for example, when materials for manufacturing electronic components are applied to a CMOS camera module, such as the solid-state image sensor of a digital camera, the light-shielding material contains a cured product obtained by curing an ultraviolet-curable black composition that has a high ratio of ultraviolet light transmittance to visible light transmittance as described above, and is excellent in processability and rapid hardening, making it possible to create a fine shape. For this reason, digital cameras using such CMOS camera modules can be miniaturized. 【0065】 Figure 2 shows a CMOS camera module 20 as another example of an electronic component to which the present invention can be applied. This CMOS camera module 20 has a number of photodiodes 24 arranged on the lower surface of a substrate 22, and a color filter 26 is arranged on the upper surface of the substrate 22, each of which has color sections 26R, 26G, and 26B that transmit red, green, and blue light, respectively, corresponding to each photodiode 24. The color filter 26 has black light-shielding walls 30 that separate adjacent color sections 26R, 26G, and 26B, and a number of lenses 28 are provided on the color filter 26, each corresponding to each color section 26R, 26G, and 26B. Inside the substrate 22, wiring sections 32 are formed with openings that allow light from the lenses 28 to enter the corresponding photodiodes 24. By forming the light-shielding walls 30 with the electronic component manufacturing material of the present invention, it is possible to miniaturize the pattern of the light-shielding walls 30. 【0066】 Furthermore, for example, when an electronic component manufacturing material is applied to a liquid crystal display device as a sealing material for liquid crystal display elements, as described above, the light-shielding material has a high ratio of ultraviolet light transmittance to visible light transmittance and excellent curability and light-shielding properties in ultraviolet curing, thus improving the ability to prevent backlight light leakage. 【0067】 Furthermore, for example, when an electronic component manufacturing material is applied as a partitioning agent in a micro-LED display device, as described above, the light-shielding material has a high ratio of ultraviolet light transmittance to visible light transmittance and excellent curability and light-shielding properties in ultraviolet curing, allowing for the formation of a fine partitioning structure. This further enhances the prevention of backlight leakage and improves the color development and brightness of the micro-LED display device. 【0068】 Furthermore, for example, when materials for the manufacture of electronic components are applied as semiconductor encapsulants or underfill materials, as described above, the light-shielding material has a high ratio of ultraviolet light transmittance to visible light transmittance and excellent curability and light-shielding properties in ultraviolet curing. Therefore, the ultraviolet curing method can be adopted in areas where the thickness of the encapsulant or underfill material was previously large and it was difficult to apply ultraviolet curing resins. 【0069】 Furthermore, for example, when a material for manufacturing electronic components is applied as a black paste for concealing circuits, as described above, the light-shielding material has a high ratio of ultraviolet light transmittance to visible light transmittance and excellent curability and light-shielding properties in ultraviolet curing, so a circuit protective film with high concealment properties can be formed in a shape suitable for fine circuits. 【0070】 Furthermore, for example, when an electronic component manufacturing material is applied as a light-shielding solder resist, the light-shielding material contains a cured product obtained by curing an ultraviolet-curable black composition that has a high ratio of ultraviolet light transmittance to visible light transmittance as described above, and is excellent in processability and rapid hardening, thus making it possible to obtain a solder resist film with high resolution. 【0071】 Furthermore, for example, when materials for the manufacture of electronic components are applied as black UV-curable ink, the light-shielding agent, as mentioned above, has a high ratio of UV light transmittance to visible light transmittance. As a result, the ink can be cured with less UV irradiance and irradiation time than conventional methods during the UV curing process, thereby improving printing throughput. 【0072】 Furthermore, for example, when materials for manufacturing electronic components are applied as optical adhesives to optical devices and components such as camera modules and optical sensors, as described above, the light-shielding material has a high ratio of ultraviolet light transmittance to visible light transmittance and excellent curability and light-shielding properties in ultraviolet curing. Therefore, it is possible to enhance light leakage prevention while ensuring sufficient adhesive strength. 【0073】 Furthermore, in addition to the method of obtaining a resin composition by directly applying a liquid UV-curable black composition to the required area and curing it with ultraviolet light, light-shielding materials used around various display devices, solid-state image sensors, and semiconductors can also be manufactured by inserting, attaching, or bonding a light-shielding film that has been pre-cured or partially cured with ultraviolet light. Regarding this light-shielding film, by using the black dispersion liquid and electronic component manufacturing materials used in the present invention as the forming material for the light-shielding material, it is possible to produce a film with high visible light shielding properties solely through UV curing, without the need for thermal curing, which is effective in improving throughput and reducing energy loss. 【0074】 Although embodiments of the present invention have been described above, the present invention is not limited thereto and can be modified as appropriate without departing from the technical spirit of the invention. [Examples] 【0075】 <Verification Example 1> [Example 1 of the present invention] Zirconium oxide (ZrO2) powder (BET specific surface area: 30 m²) 2 9.5 parts by mass of (parts by mass), 5.83 parts by mass of metallic magnesium (Mg) powder (average primary particle size: 100 μm), and 3.39 parts by mass of magnesium oxide (MgO) powder (average primary particle size: 0.5 μm) were weighed out. 【0076】 The weighed ZrO2 powder, Mg powder, and MgO powder were filled into 50 ml poly bottles in a nitrogen-purged glove box, and then stirred using a pot mill at a rotation speed of 30 rpm for 1 hour to obtain a raw material mixture. 【0077】 The obtained raw material mixture was placed in a carbon crucible and heated at 800°C for 1 hour under a nitrogen atmosphere to produce zirconium nitride (ZrN), after which it was allowed to cool to room temperature. The resulting black powder was washed with 300 parts by mass of 5% hydrochloric acid aqueous solution to remove impurities, then neutralized with ammonia water, and further washed with pure water to obtain a slurry containing the black powder. 【0078】 To 20 parts by mass of the obtained black powder-containing slurry (black powder concentration 30% by mass), 0.5 parts by mass of ammonium citrate was dissolved as a dispersant. This slurry was circulated through a bead mill NM-L (manufactured by Asada Iron Works Co., Ltd.) filled with 1.0 mm diameter zirconia beads for a residence time of 30 minutes to pulverize the coarse particles in the black powder. The black powder-containing slurry from which the coarse particles had been pulverized was filtered, washed, and dried again. In this way, black ZrN powder was obtained. 【0079】 30 parts by mass of the obtained ZrN powder, 3 parts by mass of a comb-type polymer (number average molecular weight: 3500) dispersant, in which the main chain is polyethyleneimine and the side chains have oxyethylene and oxypropylene groups (10% by mass relative to the black pigment), and benzyl acrylate as a solvent were weighed in an amount that made up to 100 parts by mass of all components. Each weighed component was dispersed and mixed in a bead mill using zirconia beads with a diameter of 0.3 mm for a residence time of 5 minutes to produce a black dispersion. The obtained black dispersion had a ZrN particle content of 30% by mass. 【0080】 [Examples 2-13 of the present invention, Comparative Examples 1-9] In the process of crushing the coarse particles, the additives and residence time during bead mill dispersion, and the solvent during the production of the black dispersion were set to the conditions shown in Table 1, except that the black dispersion was produced in the same manner as in Example 1 of the present invention. 【0081】 [Table 1] 【0082】 [evaluation] The average crystallite size of the obtained black particles, the particle size distribution of the black dispersion, and its optical properties were measured by the following methods. The particle size distribution of the black dispersion was measured by TEM and dynamic light scattering. The results are shown in Table 2 below. 【0083】 (Method for measuring particle size distribution using TEM method) A black dispersion was dropped onto a glass substrate and dried to obtain a sample for TEM observation. The obtained sample was observed using a TEM (transmission electron microscope). The maximum ferret diameter was measured for 500 ZrN particles. A volume-based cumulative particle size distribution was created using the obtained maximum ferret diameter. D50 and D90 were read from the obtained cumulative particle size distribution curve. 【0084】 (Method for measuring particle size distribution using dynamic light scattering) A diluted dispersion containing 1% by mass of ZrN particles was prepared by adding isobornyl acrylate to a black dispersion. The volume-based cumulative particle size distribution and cumulant diameter of the diluted dispersion were measured at 25°C using a dynamic light scattering particle size analyzer (Spectris, Zetasizer Nano ZSP) and software (Zetasizer Software). The volume-based D50, D90, and cumulant diameters were obtained by analyzing the software. 【0085】 (Method for measuring optical properties) The diluted dispersion prepared using the dynamic light scattering method described above for measuring particle size distribution was further diluted until the concentration of the black pigment reached 50 ppm by mass. This dispersion was then poured into a quartz cell with a path length of 10 mm, and the transmittance of light from wavelengths of 240 nm to 1300 nm was measured using a spectrophotometer (Hitachi High-Tech Fielding Co., Ltd. UH-4150) to create a spectral curve. From the obtained spectral curve, the transmittance of light at a wavelength of 365 nm (T 365 ) and the transmittance of light with a wavelength of 550nm (T 550 ) and read the ratio of the transmittance of light at a wavelength of 365 nm to the transmittance of light at a wavelength of 550 nm (T 365 / T 550 ) was calculated. 【0086】 (Method for calculating the average crystallite size of black particles) The obtained black particles were measured using an X-ray diffractometer (D8 Advance, manufactured by Bruker Corporation) to obtain X-ray diffraction patterns. The conditions were as follows: Light source: Cu tube, scan range: 15°~110°, scan step: 0.02°. The obtained X-ray diffraction patterns were analyzed using TOPAS software (Bruker Corporation) to analyze the X-ray diffraction patterns of the black particles, and the average crystallite size was calculated using the FP method, assuming there was no crystallite size distribution. At this time, the space group of the crystal phase was set to Fm-3m and the lattice constant to 4.58 Å. 【0087】 [Table 2] 【0088】 As shown in Table 2, in Examples 1 to 13 of the present invention, where the crystallite size is in the range of 12 to 28 nm, the 50% cumulative distribution diameter (D50) in the particle size distribution (TEM method) is in the range of 30 nm to 120 nm, and the 90% cumulative distribution diameter (D90) measured using a transmission electron microscope is 200 nm or less, the ratio of the transmittance of light at a wavelength of 365 nm to the transmittance of light at a wavelength of 550 nm (T 365 / T 550 ) showed good light-blocking and UV-transmitting properties of 3.0 or higher. 【0089】 In Examples 1 to 13 of the present invention, the 50% cumulative distribution diameter (D50) of the black particles measured using dynamic light scattering was between 30 nm and 120 nm, the 90% cumulative distribution diameter (D90) was between 200 nm, and the cumulant diameter was between 60 nm and 140 nm, indicating a good particle size distribution. However, since the dielectric constant differs depending on the solvent, even if particles have a similar particle size distribution, differences in dispersion solvent will result in differences in optical properties. 【0090】 On the other hand, in Comparative Examples 1-7, where no crushing treatment was performed and the particle size distribution (D90) in the TEM method was 200 nm or more, coarse particles remained, resulting in T 365 / T550 The value was 2.8 or less, which was lower compared to Examples 1 to 13 of the present invention. In Comparative Example 8, although crushing was performed, the crushing was insufficient, and the particle size distribution (D90) in the TEM method was also 200 nm or more, and similarly, T 365 / T 550 The value decreased slightly to 2.9. In comparative example 9, where crushing was excessive, the particle size distribution (D50) in the TEM method became unnecessarily small, below 30 nm, and the oxidation of the particle surface progressed excessively due to the increase in specific surface area, resulting in T 365 / T 550 It fell to 2.8. 【0091】 <Verification Example 2> [Example 14 of the present invention] Two parts by mass of the black dispersion obtained in Example 1 of the present invention, 97 parts by mass of urethane acrylate (UF-C052, manufactured by Kyoeisha Chemical Co., Ltd.) as an ultraviolet-curable organic material, and one part by mass of bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide as an ultraviolet curing agent were weighed out, and the mixture was mixed and degassed for more than 3 minutes at 1000 rpm using a planetary stirrer (Awatori Rentaro, manufactured by Shinki Co., Ltd.) to produce an ultraviolet-curable black composition. The obtained ultraviolet-curable black composition had a black pigment content of 0.6% by mass and an ultraviolet curing agent content of 1.0 part by mass per 100 parts by mass of ultraviolet-curable organic material. 【0092】 [Examples 15-26 of the present invention, Comparative Examples 10-18] Each UV-curable black composition was obtained in the same manner as in Example 15 of the present invention, except that the black dispersion, UV-curable organic matter, UV curing agent, and their respective proportions were as shown in Table 3. 【0093】 [evaluation] The obtained UV-curable black composition was poured into a mold with a diameter of 5 mm and a depth of 2 mm, and then irradiated with a spot-type UV-LED irradiator (8332C, manufactured by CCS Corporation) at an irradiation level of approximately 1000 mW / cm². 2The material was then cured using ultraviolet light with a wavelength of 365 nm for 3 minutes. The cured product was removed from the mold, and the uncured liquid portion was wiped off to obtain the black resin composition. In the case of Example 20 of the present invention, since the solvent in Example 6 of the present invention contains a non-reactive organic solvent, after pouring into the mold, it was dried at 100°C for 5 minutes before ultraviolet curing. The OD value of the obtained black resin composition was measured using a transmission density meter (T5plus, manufactured by Ihara Electronics Co., Ltd.). The measurement results, which show OD values ​​that approximate ISO 5-3(2009) visual, are shown in Table 3. 【0094】 [Table 3] 【0095】 According to the results shown in Table 3, the ratio of the transmittance of light at a wavelength of 365 nm to the transmittance of light at a good wavelength of 550 nm (T 365 / T 550 In the case of Examples 14-27 of the present invention, which used a black dispersion obtained, a good OD value of 3.5 or higher was obtained. On the other hand, T 365 / T 550 For comparative examples 10-18, where the values ​​were slightly smaller, the OD values ​​were less than 3.5, indicating a somewhat inferior result. [Industrial applicability] 【0096】 The black dispersion of this embodiment has a high ratio of ultraviolet light transmittance to visible light transmittance. For this reason, the UV-curable black composition containing the black dispersion of this embodiment can be suitably used as a material for forming black patterns, such as black resists and black inks for inkjet printers. Furthermore, the resin composition of this embodiment, which is the cured product of this UV-curable black composition, can be used as a black matrix for image forming elements used in display devices such as liquid crystal displays and organic EL displays, or as a light-shielding material in image sensors such as CMOS sensors. Moreover, the resin composition of this embodiment can also be used as a material for sealing materials for liquid crystal display elements, black column spacers, partition materials for micro-LEDs, semiconductor encapsulants, underfill materials, black pastes for circuit concealment, light-shielding solder resists, black UV-curable inks, and optical adhesives. [Explanation of symbols] 【0097】 1. Color filter 2. Circuit board 4. Color resist layer 4R, 4G, 4B Color resist section 8 Black matrix layer 6 Transparent conductive film 10 Photospacers, 20 CMOS camera modules 22 circuit boards 24 photodiodes 26 Color Filters 26R, 26G, 26B Color Section 28 Lens 30 Light-blocking wall 32 Wiring section

Claims

[Claim 1] It contains a solvent, a black pigment, and a dispersant. The aforementioned black pigment is black particles containing 80% by mass or more of zirconium nitride, and one or more other metallic elements selected from hafnium, magnesium, and zinc, such as nitrides or oxides. The aforementioned black particles have a 50% cumulative distribution diameter measured using a transmission electron microscope that is in the range of 30 nm to 120 nm, and a 90% cumulative distribution diameter measured using a transmission electron microscope that is 200 nm or less. A black dispersion characterized in that the concentration of the black pigment is adjusted to 50 ppm by mass, and the ratio of the transmittance of light at a wavelength of 365 nm to the transmittance of light at a wavelength of 550 nm (T365 / T550), measured using a spectrophotometer, is 3.0 or higher. [Claim 2] The black dispersion according to claim 1, wherein the black particles have a 50% cumulative distribution diameter measured using dynamic light scattering, which is in the range of 30 nm to 120 nm, and a cumulant diameter of 130 nm or less. [Claim 3] The black dispersion according to claim 1 or 2, wherein the average crystallite size of the zirconium nitride contained in the black particles is in the range of 12 nm to 28 nm. [Claim 4] A UV-curable black composition comprising a black dispersion according to claim 1 or 2, a UV-curable organic substance, and a UV-curing agent. [Claim 5] The ultraviolet-curable black composition according to claim 4, for use as a black resist. [Claim 6] A resin composition which is a cured product of the ultraviolet-curable black composition described in claim 4. [Claim 7] A material for manufacturing electronic components, comprising at least one of the ultraviolet-curable black composition described in claim 4, or a cured product obtained by curing the ultraviolet-curable black composition. [Claim 8] An electronic component comprising at least one of the materials for manufacturing electronic components described in claim 7, or a cured product obtained by curing the materials for manufacturing electronic components.

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