Color filter, solid-state image pickup element, colored composition, and kit

Abstract

The present application provides a color filter and a solid-state imaging device, the color filter comprising: a first pixel containing a pigment containing a blue pigment and a yellow pigment; and a second pixel being a green pixel containing a pigment containing a green pigment. A coloring composition for forming the first pixel of the aforementioned color filter and a kit for manufacturing the aforementioned color filter.

Description

Technical Field

[0001] This invention relates to a color filter having green pixels containing green pigment. Furthermore, this invention relates to a solid-state imaging element, a coloring composition, and a kit. Background Technology

[0002] In recent years, with the widespread use of digital cameras and camera-equipped mobile phones, the demand for solid-state imaging components such as charge-coupled device (CCD) image sensors has increased significantly. Color filters are used as core components in displays and optical systems. A color filter contains colored pixels of the three primary colors: green, blue, and red, and functions to decompose transmitted light into these three primary colors.

[0003] Patent Document 1 describes a green pixel formed by using a coloring composition to form a color filter. The coloring composition includes CI Pigment Blue 16 and a yellow colorant, wherein the content of CI Pigment Blue 16 is 26% by mass or more, and includes a colorant (A) without a green colorant, a resin (B), a polymerizable compound (C), and a polymerization initiator (D).

[0004] Previous technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2018-180081 Summary of the Invention

[0007] The technical problem to be solved by the invention

[0008] Green pixels, which serve as color filters, are typically formed using coloring compositions containing green pigments, considering the good color reproduction of green and its excellent color separation from other colors.

[0009] However, green pigments generally tend to have low lightfastness. Therefore, color filters containing green pixels with green pigments tend to exhibit green spectral characteristics that easily change over time when exposed to light.

[0010] Therefore, the object of the present invention is to provide a color filter with excellent lightfastness that suppresses changes in the green spectral characteristics caused by light irradiation. Furthermore, the object of the present invention is to provide a solid-state imaging element, a coloring composition, and a kit.

[0011] means for solving technical problems

[0012] According to the inventors' research, it was discovered that the above-mentioned objectives can be achieved by configuring the structure described later, thereby completing the present invention. Therefore, the present invention provides the following.

[0013] <1> A color filter comprising:

[0014] The first pixel contains pigments including blue and yellow pigments; and

[0015] The second pixel is a green pixel containing pigment containing green pigment.

[0016] <2> According to the color filter described in <1>, wherein,

[0017] The blue pigment contained in the first pixel is phthalocyanine blue pigment.

[0018] <3> According to the color filter described in <1>, wherein,

[0019] The blue pigment included in the first pixel is selected from at least one of pigment blue with a colorimetric index of 15:3, pigment blue with a colorimetric index of 15:4, pigment blue with a colorimetric index of 15:6 and pigment blue with a colorimetric index of 16.

[0020] <4> According to the color filter described in <1>, wherein,

[0021] The blue pigment contained in the first pixel is Pigment Blue 16 with a colorimetric index.

[0022] <5> The color filter according to any one of <1> to <4>, wherein,

[0023] The yellow pigment included in the first pixel is selected from at least one of pigment yellow 129, pigment yellow 139, pigment yellow 150 and pigment yellow 185.

[0024] <6> The color filter according to any one of <1> to <5>, wherein,

[0025] Relative to 100 parts by mass of the aforementioned blue pigment, the aforementioned first pixel contains 70 to 130 parts by mass of the aforementioned yellow pigment.

[0026] <7> The color filter according to any one of <1> to <6>, wherein,

[0027] In the first pixel mentioned above, the total content of the blue pigment and the yellow pigment in the pigment is 75-100% by mass.

[0028] <8> The color filter according to any one of <1> to <7>, wherein,

[0029] The green pigment included in the second pixel is selected from at least one of colorimetric index pigment green 7, colorimetric index pigment green 36, colorimetric index pigment green 58, colorimetric index pigment green 59, colorimetric index pigment green 62 and colorimetric index pigment green 63.

[0030] <9> The color filter according to any one of <1> to <8>, wherein,

[0031] The second pixel mentioned above further contains yellow pigment.

[0032] <10> The color filter according to any one of <1> to <8>, wherein,

[0033] The second pixel mentioned above contains green pigment, yellow pigment, and blue pigment.

[0034] <11> The color filter according to <9> or <10>, wherein,

[0035] The yellow pigment included in the second pixel is selected from at least one of pigments with colorimetric index yellow 129, pigment with colorimetric index yellow 139, pigment with colorimetric index yellow 150 and pigment with colorimetric index yellow 185.

[0036] <12> The color filter according to any one of <1> to <11>, wherein,

[0037] The content of the pigment in the first pixel is 40% by mass or more.

[0038] <13> The color filter according to any one of <1> to <12>, wherein,

[0039] The content of the pigment in the second pixel is 40% by mass or more.

[0040] <14> The color filter according to any one of <1> to <13>, wherein,

[0041] The transmission spectra of the first pixel and the second pixel mentioned above in the wavelength range of 400–700 nm are as follows:

[0042] Regarding the first pixel mentioned above, there exists a wavelength λ in the wavelength range of 450–600 nm that exhibits the maximum transmittance. 1 The aforementioned wavelength λ 1 The transmittance is over 70%.

[0043] Regarding the second pixel mentioned above, it is in the wavelength range of 450–600 nm and is greater than the aforementioned wavelength λ. 1 There exists a wavelength λ that exhibits the maximum transmittance on the longer wavelength side. 2 The aforementioned wavelength λ 2 The transmittance is over 70%.

[0044] The first and second pixels mentioned above have two wavelengths in the wavelength range of 400-700nm that exhibit 50% transmittance.

[0045] <15> According to the color filter described in <14>, wherein,

[0046] The above wavelength λ 2 With the wavelength λ mentioned above 1 The difference is 5–75 nm.

[0047] <16> The color filter according to any one of <1> to <15>, wherein,

[0048] Regarding the wavelength λ of the longer wavelength side where the second pixel exhibits 50% transmittance, as mentioned above... L21 The wavelength λ exists on the longer wavelength side than the first pixel mentioned above, where 50% transmittance is present. L11 It is closer to the longer wavelength side.

[0049] <17> According to the color filter described in <16>, wherein,

[0050] The above wavelength λ L21 With the wavelength λ mentioned above L11 The difference is 5–75 nm.

[0051] <18> The color filter according to <16> or <17>, wherein,

[0052] The above wavelength λ L11 The transmittance of the second pixel mentioned above is over 60%.

[0053] <19> The color filter according to any one of <16> to <18>, wherein,

[0054] The above wavelength λ L21 The transmittance of the first pixel mentioned above is less than 20%.

[0055] <20> A solid-state imaging element having a color filter as described in any one of <1> to <19>.

[0056] <21> A coloring composition for forming a first pixel of a color filter as described in any one of <1> to <19>, the coloring composition comprising:

[0057] Pigments including blue and yellow pigments; and curing compounds.

[0058] The aforementioned blue pigment includes Pigment Blue 16 with a colorimetric index of 16.

[0059] The content of the pigment in the total solids of the above-mentioned coloring composition is 40% by mass or more.

[0060] The content of Pigment Blue 16 in the above pigments is 50% by mass or more.

[0061] <22> A kit for manufacturing a color filter as described in any one of <1> to <19>, the kit comprising:

[0062] A coloring composition for forming the first pixel, comprising a pigment including a blue pigment and a yellow pigment, and a curable compound; and

[0063] The coloring composition used to form the second pixel contains a pigment including a green pigment and a curing compound.

[0064] <23> According to the kit described in <22>, wherein,

[0065] The coloring composition used to form the second pixel comprises green pigment, yellow pigment and blue pigment.

[0066] Invention Effects

[0067] According to the present invention, a color filter with excellent lightfastness can be provided, which suppresses changes in the green spectral characteristics caused by light irradiation. Furthermore, the present invention can provide a solid-state imaging element, a coloring composition, and a kit. Detailed Implementation

[0068] The present invention will now be described in detail.

[0069] In this specification, “~” is used to imply that the values ​​recorded before and after it are the lower and upper limits.

[0070] In this specification, the designations of groups (atomic groups) that do not specify substitution and non-substitution also include groups (atomic groups) without substituents and groups (atomic groups) with substituents. For example, "alkyl" includes not only alkyl groups without substituents (unsubstituted alkyl groups) but also alkyl groups with substituents (substituted alkyl groups).

[0071] In this specification, unless otherwise specified, "exposure" refers not only to exposure using light, but also to depiction using particle beams such as electron beams and ion beams. Furthermore, examples of light used in exposure include the bright-line spectrum of a mercury lamp, far-ultraviolet light represented by an excimer laser, extreme ultraviolet light (EUV light), X-rays, electron beams, and other photochemical rays or radiation.

[0072] In this specification, "(meth)acrylate" means either or both of acrylate and methacrylate, "(meth)acrylic acid" means either or both of acrylic acid and methacrylic acid, and "(meth)acryloyl" means either or both of acryloyl and methacryloyl.

[0073] In this specification, Me represents methyl, Et represents ethyl, Bu represents butyl, and Ph represents phenyl in the structural formula.

[0074] In this specification, the weight-average molecular weight and number-average molecular weight are converted values ​​of polystyrene determined by GPC (gel permeation chromatography).

[0075] In this specification, pigment refers to a colorant that is not easily soluble in solvents. For example, the solubility of the pigment in 100g of water at 23°C and 100g of propylene glycol monomethyl ether acetate at 23°C is preferably 0.1g or less, more preferably 0.01g or less.

[0076] In this specification, total solids content refers to the total mass of the components after removing the solvent from all components of the composition.

[0077] In this specification, the term "process" is included not only in the case of an independent process, but also in the case where it is not clearly distinguishable from other processes, as long as the intended function of the process is achieved.

[0078] <Color Filter>

[0079] The color filter of the present invention is characterized in that it comprises:

[0080] The first pixel contains pigments including both blue and yellow pigments; and

[0081] The second pixel is a green pixel containing pigment that contains green pigment.

[0082] Although the color filter of the present invention comprises a green pixel containing a pigment containing a green pigment, it is able to suppress changes in the green spectral characteristics caused by light irradiation. While the exact reason for this effect is not yet clear, it is presumed to be due to the stronger lightfastness of blue pigment compared to green pigment. That is, it is presumed that the first pixel containing blue pigment experiences less change in spectral characteristics due to light irradiation compared to the second pixel. Therefore, it is presumed that using both a first pixel containing pigments containing both blue and yellow pigments and a second pixel containing a green pigment is more effective in suppressing changes in the green spectral characteristics caused by light irradiation than using the second pixel alone.

[0083] First, the first pixel in the color filter of the present invention will be described. The first pixel contains a pigment containing both blue and yellow pigments. The first pixel is preferably a green pixel.

[0084] Examples of blue pigments included in the first pixel include phthalocyanine blue pigment, triarylmethane blue pigment, and indanthrene blue pigment. Considering its excellent heat resistance and lightfastness, phthalocyanine blue pigment is preferred.

[0085] Examples of blue pigments include pigment blues with colorimetric indices (CI) of 1, 2, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 22, 29, 60, 64, 66, 79, 80, 87 (monoazo series), and 88 (methylene series).

[0086] The blue pigment is preferably selected from at least one of CI Pigment Blue 15:3, CI Pigment Blue 15:4, CI Pigment Blue 15:6 and CI Pigment Blue 16. Considering its particularly excellent heat resistance, lightfastness and color reproduction properties, CI Pigment Blue 16 is preferred.

[0087] The first pixel can contain only one type of blue pigment, or it can contain two or more types.

[0088] Examples of yellow pigments included in the first pixel include azo yellow pigments, azomethine yellow pigments, quinoline yellow pigments, isoindoline yellow pigments, isoindoline yellow pigments, pteridine yellow pigments, and anthraquinone yellow pigments, with azo yellow pigments, azomethine yellow pigments, and isoindoline yellow pigments being preferred.

[0089] As specific examples of yellow pigments, CI pigments 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, 12 6, 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 (methionine series), 233 (quinoline series), 234 (aminoketone series), 235 (aminoketone series), 236 (aminoketone series), etc.

[0090] Furthermore, as a yellow pigment, azo barbiturate nickel complex (azo yellow pigment) with the following structure can also be used.

[0091] [Chemical Formula 1]

[0092]

[0093] Furthermore, as a yellow pigment, the following compounds can also be used: quinoline compounds described in paragraphs 0011 to 0034 of Japanese Patent Application Publication No. 2013-054339, quinoline compounds described in paragraphs 0013 to 0058 of Japanese Patent Application Publication No. 2014-026228, isoindoline compounds described in Japanese Patent Application Publication No. 2018-062644, quinoline compounds described in Japanese Patent Application Publication No. 2018-203798, quinoline compounds described in Japanese Patent Application Publication No. 2018-062578, quinoline compounds described in Japanese Patent No. 6432076, and quinoline compounds described in Japanese Patent Application Publication No. 2018-155881. The following compounds are listed in Japanese Patent Application Publication No. 2018-111757, Japanese Patent Application Publication No. 2018-040835, Japanese Patent Application Publication No. 2017-197640, Japanese Patent Application Publication No. 2016-145282, Japanese Patent Application Publication No. 2014-085565, Japanese Patent Application Publication No. 2014-021139, Japanese Patent Application Publication No. 2013-209614, and Japanese Patent Application Publication No. 2013-209435. The quinoline compounds described in Japanese Patent Application Publication No. 2013-181015, Japanese Patent Application Publication No. 2013-061622, Japanese Patent Application Publication No. 2013-032486, Japanese Patent Application Publication No. 2012-226110, Japanese Patent Application Publication No. 2008-074987, Japanese Patent Application Publication No. 2008-081565, Japanese Patent Application Publication No. 2008-074986, Japanese Patent Application Publication No. 2008-074985, and Japanese Patent Application Publication No. 2008- The quinoline compounds described in Japanese Patent Application Publication No. 050420, Japanese Patent Application Publication No. 2008-031281, Japanese Patent Application Publication No. 48-032765, Japanese Patent Application Publication No. 2019-008014, Japanese Patent No. 6607427, Japanese Patent Application Publication No. 2020-033525, Japanese Patent Application Publication No. 2020-033524, Japanese Patent Application Publication No. 2020-033523, and Japanese Patent Application Publication No. 2020-033522.The compounds described in Japanese Patent Application Publication No. 2020-033521, International Publication No. 2020 / 045200, International Publication No. 2020 / 045199, and International Publication No. 2020 / 045197. Furthermore, from the viewpoint of improving color value, substances formed by polymerizing these compounds can also be preferably used.

[0094] As a yellow pigment, it is preferably selected from at least one of CI pigment yellow 129, CI pigment yellow 138, CI pigment yellow 139, CI pigment yellow 150, CI pigment yellow 185 and CI pigment yellow 215, and more preferably selected from at least one of CI pigment yellow 129, CI pigment yellow 139, CI pigment yellow 150 and CI pigment yellow 185.

[0095] The first pixel may contain only one type of yellow pigment, but for the sake of easy adjustment of color reproducibility, it is preferable to contain two or more types, and more preferably three or more types.

[0096] Relative to 100 parts by weight of blue pigment, the first pixel preferably contains 50 to 200 parts by weight of yellow pigment, more preferably 60 to 150 parts by weight, and even more preferably 70 to 130 parts by weight.

[0097] The content of blue pigment in the pigment contained in the first pixel is preferably 10 to 75% by mass, more preferably 30 to 65% by mass, and even more preferably 40 to 60% by mass.

[0098] Furthermore, the content of CI Pigment Blue 16 in the pigment contained in the first pixel is preferably 10% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, and even more preferably 50% by mass or more. The upper limit is more preferably 65% ​​by mass or less, and even more preferably 60% by mass or less. According to this method, both lightfastness and color reproduction can be achieved at a high level.

[0099] Furthermore, the content of yellow pigment in the pigment contained in the first pixel is preferably 5 to 70% by mass, more preferably 10 to 60% by mass, and even more preferably 20 to 50% by mass.

[0100] Furthermore, the total content of blue and yellow pigments in the pigments contained in the first pixel is preferably 50-100% by mass, more preferably 60-100% by mass, even more preferably 75-100% by mass, and especially preferably 90-100% by mass. From the viewpoint of lightfastness and spectral characteristics, the pigments contained in the first pixel are particularly preferably only blue and yellow pigments.

[0101] In the first pixel, the pigment content is preferably 40% by mass or more, more preferably 50% by mass or more, and even more preferably 55% by mass or more. Furthermore, the blue pigment content is preferably 5-50% by mass, more preferably 10-45% by mass, and even more preferably 15-40% by mass. And the yellow pigment content is preferably 5-50% by mass, more preferably 10-45% by mass, and even more preferably 15-40% by mass.

[0102] Regarding the transmission spectrum in the wavelength range of 400–700 nm, for the first pixel, it is preferable to have a wavelength in the wavelength range of 450–600 nm that exhibits the maximum transmittance (hereinafter also referred to as wavelength λ). 1 The wavelength λ mentioned above. 1 Preferably, it exists in the wavelength range of 460–550 nm, more preferably in the wavelength range of 470–530 nm. Furthermore, regarding the first pixel, at wavelength λ… 1 The transmittance is preferably 60% or more, more preferably 70% or more, and even more preferably 80% or more.

[0103] Furthermore, regarding the transmission spectrum in the wavelength range of 400–700 nm, for the first pixel, it is preferable that there are two wavelengths exhibiting 50% transmittance in the wavelength range of 400–700 nm. The shorter wavelength side exhibiting 50% transmittance (hereinafter also referred to as wavelength λ) S11 Preferably, it exists in the wavelength range of 450–500 nm, and more preferably in the wavelength range of 460–490 nm. The wavelength exhibiting 50% transmittance at the longer wavelength side (hereinafter also referred to as wavelength λ) L11 It is preferably present in the wavelength range of 525 to 575 nm, and more preferably in the wavelength range of 530 to 560 nm.

[0104] Furthermore, regarding the transmission spectrum in the wavelength range of 400–700 nm, the maximum transmittance of the first pixel in the wavelength range of 400–450 nm is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less. Furthermore, the maximum transmittance of the first pixel in the wavelength range of 600–700 nm is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less. Furthermore, the second pixel exhibits a wavelength (wavelength λ) on the longer wavelength side with 50% transmittance. L21 The transmittance of the first pixel under the given condition is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less.

[0105] The film thickness of the first pixel is preferably 20 μm or less, more preferably 10 μm or less, and even more preferably 5 μm or less. The lower limit of the film thickness is preferably 0.1 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 μm or more.

[0106] The linewidth of the first pixel is preferably 0.4 to 10.0 μm. The lower limit is preferably 0.4 μm or more, more preferably 0.5 μm or more, and even more preferably 0.6 μm or more. The upper limit is preferably 5.0 μm or less, more preferably 2.0 μm or less, even more preferably 1.0 μm or less, and even more preferably 0.8 μm or less.

[0107] Next, the second pixel in the color filter of the present invention will be described. The second pixel is a green pixel containing green pigment.

[0108] Examples of green pigments used in the second pixel include phthalocyanine green pigment and squaric acid green pigment. While green pixels using phthalocyanine green pigment exhibit particularly excellent color reproduction, they tend to have low lightfastness and their spectral characteristics are easily altered by light exposure. However, according to the present invention, even when phthalocyanine green pigment is used, changes in the green spectral characteristics caused by light exposure can be suppressed by using it in conjunction with the aforementioned first pixel. Therefore, the effects of the present invention are more significantly enhanced when phthalocyanine green pigment is used in the green pixel.

[0109] From the viewpoint of color reproducibility, halogenated phthalocyanine green pigments are preferred as phthalocyanine green pigments. Furthermore, phthalocyanine green pigments with phthalocyanine as the central metal are preferred; those with Cu, Al, Co, Ni, Ti, or Zn as the central metal are more preferred; those with Cu, Zn, or Al as the central metal are even more preferred; those with Cu or Zn as the central metal are still more preferred; and those with Cu as the central metal are particularly preferred. The aforementioned central metal may further contain ligands.

[0110] Specific examples of copper halide phthalocyanine green pigments (hereinafter also referred to as copper halide phthalocyanine green pigments) having Cu as the central metal include pigments with colorimetric index (CI) of 7 and 36. Furthermore, copper halide phthalocyanine green pigments can also be exemplified by those having an average of 11 to 15 bromine atoms and an average of 1 to 4 chlorine atoms per molecule. Specific examples of such copper halide phthalocyanine green pigments include the phthalocyanine pigment described in Japanese Patent Application Publication No. 2009-197075.

[0111] Specific examples of phthalocyanine halide green pigments (hereinafter also referred to as zinc halide phthalocyanine green pigments) having Zn as the central metal include CI Pigment Green 58 and CI Pigment Green 59. Furthermore, zinc halide phthalocyanine green pigments can also be described as having an average number of 10 to 14 halogen atoms, an average number of 8 to 12 bromine atoms, and an average number of 2 to 5 chlorine atoms per molecule. As a specific example, the phthalocyanine pigment described in International Publication No. 2015 / 118720 can be cited.

[0112] Specific examples of phthalocyanine green pigments (hereinafter also referred to as aluminum phthalocyanine green pigments) having Al as the central metal include CI Pigment Green 62 (a non-aluminum halide phthalocyanine green pigment) and CI Pigment Green 63 (aluminum halide phthalocyanine green pigment). Furthermore, the phthalocyanine pigments described in paragraphs 0108 and 0109 of Japanese Patent Application Publication No. 2018-141894 can also be cited.

[0113] The green pigment is preferably selected from at least one of CI pigment green 7, CI pigment green 36, CI pigment green 58, CI pigment green 59, CI pigment green 62 and CI pigment green 63. Considering the good lightfastness properties, it is preferably selected from at least one of CI pigment green 7 and CI pigment green 36, and more preferably CI pigment green 7.

[0114] The second pixel can contain only one type of green pigment, or it can contain two or more types.

[0115] The second pixel preferably further comprises a yellow pigment. According to this method, it can be configured as a pixel with particularly excellent green color reproduction. Examples of yellow pigments that can be described include those used in the first pixel. Regarding the yellow pigment included in the second pixel, it is preferably at least one selected from CI pigment yellow 129, CI pigment yellow 138, CI pigment yellow 139, CI pigment yellow 150, CI pigment yellow 185, and CI pigment yellow 215, and more preferably at least one selected from CI pigment yellow 129, CI pigment yellow 139, CI pigment yellow 150, and CI pigment yellow 185.

[0116] The second pixel can contain only one type of yellow pigment, or it can contain two or more types.

[0117] The second pixel also preferably further includes blue pigment. That is, the second pixel also preferably includes green pigment, yellow pigment, and blue pigment. As a blue pigment, examples of blue pigments included in the first pixel can be given. Regarding the blue pigment included in the second pixel, it is preferably selected from at least one of CI Pigment Blue 15:3, CI Pigment Blue 15:4, CI Pigment Blue 15:6, and CI Pigment Blue 16, and more preferably Pigment Blue 15:4.

[0118] The content of green pigment in the pigment contained in the second pixel is preferably 5 to 75% by mass, more preferably 10 to 50% by mass, and even more preferably 20 to 45% by mass.

[0119] Furthermore, if the pigment contained in the second pixel contains yellow pigment, the content of yellow pigment in the pigment is preferably 5 to 75% by mass, more preferably 10 to 50% by mass, and even more preferably 20 to 40% by mass. Also, the content of yellow pigment relative to 100 parts by mass of green pigment is preferably 10 to 200 parts by mass, more preferably 25 to 160 parts by mass.

[0120] Furthermore, if the pigment contained in the second pixel contains blue pigment, the content of blue pigment in the pigment is preferably 5 to 50% by mass, more preferably 10 to 45% by mass, and even more preferably 20 to 40% by mass. Also, the content of blue pigment relative to 100 parts by mass of green pigment is preferably 50 to 200 parts by mass, more preferably 80 to 130 parts by mass.

[0121] Furthermore, the total content of green, yellow, and blue pigments in the pigments contained in the second pixel is preferably 50-100% by mass, more preferably 55-100% by mass, and even more preferably 60-100% by mass. The pigments contained in the second pixel are preferably only green and yellow pigments, or only green, yellow, and blue pigments. From the viewpoint of spectral characteristics, it is particularly preferred that they are only green, yellow, and blue pigments.

[0122] In the second pixel, the pigment content is preferably 40% by mass or more, more preferably 50% by mass or more, and even more preferably 60% by mass or more. Furthermore, the green pigment content is preferably 10-50% by mass, more preferably 15-45% by mass, and even more preferably 20-40% by mass. Furthermore, the yellow pigment content is preferably 10-60% by mass, more preferably 20-55% by mass, and even more preferably 35-50% by mass. Furthermore, the blue pigment content is preferably 5-40% by mass, more preferably 10-35% by mass, and even more preferably 15-30% by mass.

[0123] Regarding the transmission spectrum in the wavelength range of 400–700 nm, for the second pixel, it is preferably in the wavelength range of 450–600 nm and within a wavelength λ greater than the aforementioned wavelength. 1 The wavelength on the longer wavelength side exhibits the maximum transmittance (hereinafter also referred to as wavelength λ). 2 The wavelength λ mentioned above. 2 Preferably, it exists in the wavelength range of 490–580 nm, more preferably in the wavelength range of 500–560 nm. Furthermore, regarding the second pixel, at wavelength λ… 2 The transmittance is preferably 60% or more, more preferably 70% or more, and even more preferably 80% or more.

[0124] Furthermore, the aforementioned wavelength λ 2 With the wavelength λ mentioned above 1 The difference (λ) 2 -λ 1 The wavelength is preferably 5–75 nm, more preferably 7–50 nm, and even more preferably 10–40 nm. According to this method, the reproducibility of green is particularly excellent, and thus, it is possible to design a color filter with excellent lightfastness that further suppresses changes in the green spectral characteristics caused by light irradiation.

[0125] Furthermore, regarding the transmission spectrum in the wavelength range of 400–700 nm, for the second pixel, it is preferable to have two wavelengths exhibiting 50% transmittance in the wavelength range of 400–700 nm. The shorter wavelength side exhibiting 50% transmittance (hereinafter also referred to as wavelength λ) S21 Preferably, it exists in the wavelength range of 470–530 nm, and more preferably in the wavelength range of 480–510 nm. The wavelength exhibiting 50% transmittance at the longer wavelength side (hereinafter also referred to as wavelength λ) L21 It is preferably present in the wavelength range of 560 to 620 nm, and more preferably in the wavelength range of 570 to 600 nm.

[0126] Furthermore, wavelength λ L21 Preferred to exist in wavelength λ L11 On the longer wavelength side. And, wavelength λ L21 With wavelength λ L21 The difference (λ) L21- λ L21 The wavelength is preferably 10–80 nm, more preferably 20–70 nm, and even more preferably 30–60 nm. According to this method, the reproducibility of green is particularly excellent, and thus, it is possible to design a color filter with excellent lightfastness that further suppresses changes in the green spectral characteristics caused by light irradiation.

[0127] Furthermore, regarding the transmission spectrum in the wavelength range of 400–700 nm, the maximum transmittance of the second pixel in the wavelength range of 400–450 nm is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less. Furthermore, the maximum transmittance of the second pixel in the wavelength range of 600–700 nm is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less. Furthermore, the first pixel exhibits 50% transmittance at the longer wavelength side (wavelength λ). L11 The transmittance of the second pixel under the ) is preferably 50% or more, more preferably 60 to 95%, and even more preferably 75 to 90%.

[0128] The film thickness of the second pixel is preferably 20 μm or less, more preferably 10 μm or less, and even more preferably 5 μm or less. The lower limit of the film thickness is preferably 0.1 μm or more, more preferably 0.2 μm or more, and even more preferably 0.3 μm or more.

[0129] The linewidth of the second pixel is preferably 0.4 to 10.0 μm. The lower limit is preferably 0.4 μm or more, more preferably 0.5 μm or more, and even more preferably 0.6 μm or more. The upper limit is preferably 5.0 μm or less, more preferably 2.0 μm or less, even more preferably 1.0 μm or less, and even more preferably 0.8 μm or less.

[0130] The area of ​​the second pixel in the color filter can be the same as, larger than, or smaller than the first pixel.

[0131] The color filter of the present invention may further include pixels of a different type than the first pixel and the second pixel (hereinafter also referred to as other pixels). Examples of other pixels include red pixels, blue pixels, yellow pixels, cyan pixels, magenta pixels, transparent pixels, and pixels of infrared transmission filters. The types of these other pixels can be appropriately selected according to the application.

[0132] In the color filter of the present invention, a protective layer may also be formed on the surface of each pixel. By providing the protective layer, various functions can be imparted, such as oxidation resistance, low reflectivity, hydrophilicity / hydrophobicity, and shielding of light of specific wavelengths (ultraviolet, near-infrared, etc.). The thickness of the protective layer is preferably 0.01 to 10 μm, more preferably 0.1 to 5 μm. Examples of methods for forming the protective layer include methods of coating a resin composition for forming a protective layer, chemical vapor deposition, and methods of attaching the formed resin with an adhesive material. Examples of components constituting the protective layer include (meth)acrylic resin, olefin-thiol resin, polycarbonate resin, polyether resin, polyaryl ester resin, polysulfone resin, polyethersulfone resin, polystyrene resin, polyaryl ether phosphine oxide resin, polyimide resin, polyamide-imide resin, polyolefin resin, cyclic olefin resin, polyester resin, styrene resin, polyol resin, polyvinylidene chloride resin, melamine resin, urethane resin, aromatic polyamide resin, polyamide resin, alkyd resin, epoxy resin, modified silicone resin, fluoropolymer resin, polycarbonate resin, polyacrylonitrile resin, cellulose resin, Si, C, W, Al₂O₃, Mo, SiO₂, Si₂N₄, etc., and more than two of these components may be contained. For example, in the case of a protective layer for oxidation inhibition, the protective layer preferably includes polyol resin, SiO₂, and Si₂N₄. Furthermore, in the case of a protective layer for low reflectivity, the protective layer preferably includes (meth)acrylic resin and fluoropolymer resin.

[0133] Depending on the requirements, the protective layer may also contain additives such as organic and inorganic microparticles, absorbers for specific wavelengths of light (e.g., ultraviolet, near-infrared, etc.), refractive index modifiers, antioxidants, adhesives, and surfactants. Examples of organic and inorganic particles include polymeric microparticles (e.g., silicone resin microparticles, polystyrene microparticles, melamine resin microparticles), titanium dioxide, zinc oxide, zirconium oxide, indium oxide, aluminum oxide, titanium nitride, titanium oxynitride, magnesium fluoride, hollow silica, silica, calcium carbonate, and barium sulfate. Known absorbers can be used for the specific wavelengths of light. The content of these additives can be appropriately adjusted, but is preferably 0.1 to 70% by mass relative to the total mass of the protective layer, more preferably 1 to 60% by mass.

[0134] Furthermore, as a protective layer, the protective layer described in Japanese Patent Application Publication No. 2017-151176, 0073 to 0092, can also be used.

[0135] Preferably, each pixel of the color filter of the present invention is formed on a support. 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. Furthermore, charge-coupled devices (CCDs), complementary metal-oxide-semiconductor (CMOS) films, transparent conductive films, etc., can be formed on the silicon substrate. Moreover, to improve adhesion to the upper layer, prevent material diffusion, or planarize the substrate surface, a base layer can be provided on the silicon substrate. When measured with diiodomethane, the surface contact angle of the base layer is preferably 20–70°. When measured with water, it is preferably 30–80°.

[0136] The color filter of the present invention can have partitions between each pixel. In this case, the partitions are preferably of low refractive index relative to each pixel.

[0137] Solid-state imaging element

[0138] Next, the solid-state imaging element will be described. The solid-state imaging element of the present invention includes the color filter of the present invention described above. As for the structure of the solid-state imaging element, there are no particular limitations as long as it has the color filter of the present invention and functions as an integral imaging element; for example, the following structures can be cited.

[0139] Its configuration is as follows: A substrate has multiple photodiodes constituting the light-receiving area of ​​a solid-state imaging element (CCD (charge-coupled device) image sensor, CMOS (complementary metal oxide semiconductor) image sensor, etc.) and a transmission electrode made of polysilicon, etc. A light-shielding film with only openings in the light-receiving portion of the photodiodes is provided on the photodiodes and the transmission electrode. An element protective film made of silicon nitride, etc., formed to cover the entire surface of the light-shielding film and the light-receiving portion of the photodiodes is provided on the light-shielding film. A color filter is provided on the element protective film. Furthermore, it can have a light-concentrating mechanism (e.g., a microlens, etc. The same applies hereinafter) on the device protective film and on the underside (near the substrate) of the color filter, or a structure where the color filter has a light-concentrating mechanism, etc.

[0140] Furthermore, as shown in Japanese Patent Application Publication No. 2019-211559, an ultraviolet absorption layer can also be provided within the structure of the solid-state imaging element to improve light resistance. Imaging devices equipped with the solid-state imaging element of the present invention can be used not only as digital cameras or electronic devices with imaging functions (such as mobile phones), but also as vehicle-mounted cameras or surveillance cameras.

[0141] <Image display device>

[0142] The color filter of the present invention can also be used in image display devices. Examples of image display devices include liquid crystal display devices and organic electroluminescent display devices. Definitions of image display devices and detailed descriptions of various image display devices are described, for example, in "Electronic Display Devices" (by Akio Sasaki, Kogyo Chosakai Publishing Co., Ltd., 1990) and "Display Devices" (by Junsho Ibuki, Sangyo Tosho Publishing Co., Ltd., 1989). Furthermore, liquid crystal display devices are described, for example, in "Next-Generation Liquid Crystal Display Technology" (edited by Tatsuo Uchida, Kogyo Chosakai Publishing Co., Ltd., 1994). There are no particular limitations on the liquid crystal display devices to which the present invention can be applied; for example, liquid crystal display devices of various types described in the aforementioned "Next-Generation Liquid Crystal Display Technology" can be applied.

[0143] <Coloring Composition>

[0144] This specification discloses a coloring composition comprising a pigment containing blue and yellow pigments, and a curable compound. This coloring composition is preferably used as a coloring composition for forming the aforementioned first pixel.

[0145] <<Pigment>>

[0146] The coloring composition comprises a pigment containing a blue pigment and a yellow pigment. Examples of blue pigments include phthalocyanine blue pigment, triarylmethane blue pigment, and indanthrene blue pigment. Phthalocyanine blue pigment is preferred due to its excellent heat resistance and lightfastness.

[0147] As a specific example of blue pigment, the blue pigment included in the first pixel described above can be cited as an example. It is preferably at least one of the colorimetric index (CI) pigment blue 15:3, CI pigment blue 15:4, CI pigment blue 15:6 and CI pigment blue 16. Considering that the heat resistance, light resistance and color reproduction characteristics are particularly excellent, CI pigment blue 16 is preferred.

[0148] The coloring composition may contain only one blue pigment or two or more.

[0149] Examples of yellow pigments included in the coloring composition include azo yellow pigments, azomethine yellow pigments, quinoline yellow pigments, isoindoline yellow pigments, isoindoline yellow pigments, pteridine yellow pigments, and anthraquinone yellow pigments, with azo yellow pigments, azomethine yellow pigments, and isoindoline yellow pigments being preferred.

[0150] As a specific example of a yellow pigment, the yellow pigment described as included in the first pixel above is preferably selected from at least one of CI pigment yellow 129, CI pigment yellow 138, CI pigment yellow 139, CI pigment yellow 150, CI pigment yellow 185 and CI pigment yellow 215, and more preferably selected from at least one of CI pigment yellow 129, CI pigment yellow 139, CI pigment yellow 150 and CI pigment yellow 185.

[0151] The coloring composition may contain only one yellow pigment, but for the sake of easy adjustment of color reproducibility, it is preferable to contain two or more, and more preferably three or more.

[0152] The coloring composition preferably contains 50 to 200 parts by weight of yellow pigment relative to 100 parts by weight of blue pigment, more preferably 60 to 150 parts by weight, and even more preferably 70 to 130 parts by weight.

[0153] The content of blue pigment in the pigment contained in the coloring composition is preferably 10-75% by mass, more preferably 30-65% by mass, and even more preferably 40-60% by mass.

[0154] Furthermore, the content of CI Pigment Blue 16 in the pigment contained in the coloring composition is preferably 10% by mass or more, more preferably 30% by mass or more, even more preferably 40% by mass or more, and even more preferably 50% by mass or more. The upper limit is more preferably 65% ​​by mass or less, and even more preferably 60% by mass or less. According to this method, both lightfastness and color reproduction can be achieved at a high level.

[0155] Furthermore, the content of yellow pigment in the pigment contained in the coloring composition is preferably 5 to 70% by mass, more preferably 10 to 60% by mass, and even more preferably 20 to 50% by mass.

[0156] Furthermore, the total content of blue and yellow pigments in the coloring composition is preferably 50-100% by mass, more preferably 60-100% by mass, even more preferably 75-100% by mass, and particularly preferably 90-100% by mass. From the viewpoint of lightfastness and spectral characteristics, the pigments contained in the coloring composition are particularly preferably only blue and yellow pigments.

[0157] In the coloring composition, the pigment content is preferably 40% by mass or more, more preferably 50% by mass or more, and even more preferably 55% by mass or more. Furthermore, the content of blue pigment is preferably 5 to 50% by mass, more preferably 10 to 45% by mass, and even more preferably 15 to 40% by mass. Furthermore, the content of yellow pigment is preferably 5 to 50% by mass, more preferably 10 to 45% by mass, and even more preferably 15 to 40% by mass.

[0158] <<Cureable Compounds>>

[0159] The coloring composition contains a curable compound. Examples of curable compounds include polymerizable compounds and resins. The resin can be a non-polymerizable resin (a resin without polymerizable groups) or a polymerizable resin (a resin with polymerizable groups). Examples of polymerizable groups include groups containing vinyl unsaturated bonds, cyclic ether groups, hydroxymethyl groups, and alkoxymethyl groups. Examples of groups containing vinyl unsaturated bonds include vinyl, vinylphenyl, (meth)allyl, (meth)acryloyl, (meth)acryloyloxy, and (meth)acrylamido, with (meth)allyl, (meth)acryloyl, and (meth)acryloyloxy being preferred, and (meth)acryloyloxy being more preferred. Examples of cyclic ether groups include epoxy groups and oxetyl groups, with epoxy groups being preferred. The polymerizable compound is preferably a polymerizable monomer.

[0160] As a curable compound, it is preferable to use a curable compound that contains at least a resin. Furthermore, when the coloring composition is set as a coloring composition for photolithography, it is preferable to use a resin and a polymeric monomer (monomer-type polymeric compound) as the curable compound, and more preferably to use a resin and a polymeric monomer (monomer-type polymeric compound) having a group containing an ethylene unsaturated bond.

[0161] (polymeric compounds)

[0162] Examples of polymerizable compounds include compounds having groups containing vinyl unsaturated bonds, compounds having cyclic ether groups, compounds having hydroxymethyl groups, and compounds having alkoxymethyl groups. Compounds having groups containing vinyl unsaturated bonds are preferably used as free radical polymerizable compounds. Furthermore, compounds having cyclic ether groups, compounds having hydroxymethyl groups, and compounds having alkoxymethyl groups are preferably used as cationic polymerizable compounds.

[0163] The molecular weight of the monomeric polymeric compound (polymeric monomer) is preferably less than 2000, more preferably less than 1500. The lower limit of the molecular weight of the polymeric monomer is preferably 100 or more, more preferably 200 or more. The weight-average molecular weight (Mw) of the resin-type polymeric compound is preferably between 2000 and 2000000. The upper limit of the weight-average molecular weight is preferably less than 1000000, more preferably less than 500000. The lower limit of the weight-average molecular weight is preferably more than 3000, more preferably more than 5000.

[0164] The polymerizable monomer having a group containing an ethylene-unsaturated bond is preferably a 3- to 15-functional (meth)acrylate compound, more preferably a 3- to 6-functional (meth)acrylate compound. As specific examples, we can cite the compounds described in Japanese Patent Application Publication No. 2009-288705, paragraphs 0095 to 0108; Japanese Patent Application Publication No. 2013-029760, paragraph 0227; Japanese Patent Application Publication No. 2008-292970, paragraphs 0254 to 0257; Japanese Patent Application Publication No. 2013-253224, paragraphs 0034 to 0038; Japanese Patent Application Publication No. 2012-208494, paragraph 0477; Japanese Patent Application Publication No. 2017-048367; Japanese Patent No. 6057891; Japanese Patent No. 6031807; and Japanese Patent Application Publication No. 2017-194662, the contents of which are incorporated herein by reference.

[0165] Examples of compounds containing ethylene unsaturated groups include dipentaerythritol tri(meth)acrylate (commercially available as KAYARAD D-330; manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol tetra(meth)acrylate (commercially available as KAYARAD D-320; manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol penta(meth)acrylate (commercially available as KAYARAD D-310; manufactured by Nippon Kayaku Co., Ltd.), dipentaerythritol hexa(meth)acrylate (commercially available as KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd., and NK ESTERA-DPH-12E; manufactured by Shin-Nakamura Chemical Co., Ltd.), and compounds with structures in which the (meth)acryloyl group of these compounds is bonded via ethylene glycol and / or propylene glycol residues (e.g., by SARTOMER). Company, Inc. manufactures commercially available SR454, SR499, etc. Furthermore, as compounds containing groups with ethylene unsaturated bonds, diglycerides (EO) modified (meth)acrylates (as a commercially available product, M-460; manufactured by TOAGOSEI CO., Ltd.), pentaerythritol tetraacrylate (manufactured by Shin Nakamura Chemical Co., Ltd., NKEster A-TMMT), 1,6-hexanediol diacrylate (manufactured by Nippon Kayaku Co., Ltd., KAYARAD 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.), 8UH-1006, 8UH-1012 (manufactured by Taisei Fine Chemical Co., Ltd.), and LIGHT ACRYLATE can also be used. POB-A0 (manufactured by KYOEISHA CHEMICAL Co., LTD.), etc.

[0166] Furthermore, as compounds containing groups with ethylene unsaturated bonds, trifunctional (meth)acrylate compounds such as trimethylolpropane tri(meth)acrylate, trimethylolpropane propylene oxide modified tri(meth)acrylate, trimethylolpropane ethylene oxide modified tri(meth)acrylate, ethylene oxide isocyanurate modified tri(meth)acrylate, and pentaerythritol tri(meth)acrylate are preferred. Commercially available trifunctional (meth)acrylate compounds include ARONIX M-309, M-310, M-321, M-350, M-360, M-313, M-315, M-306, M-305, M-303, M-452, M-450 (manufactured by TOAGOSEI CO., LTD.), NK Ester A9300, A-GLY-9E, A-6LY-20E, A-TMM-3, A-TMM-3L, A-TMM-3LM-N, A-TMPT, TMPT (manufactured by Shin-Nakamura Chemical Co., Ltd.), KAYARAD GPO-303, TMPTA, THE-330, TPA-330, PET-30 (manufactured by Nippon Kayaku Co., Ltd.), etc.

[0167] Compounds containing groups with ethylene unsaturated bonds can further contain acid groups such as carboxyl, sulfonyl, and phosphate groups. Commercially available examples of such compounds include ARONIX M-305, M-510, M-520, and ARONIX TO-2349 (manufactured by TOAGOSEI CO., LTD.).

[0168] Compounds having a caprolactone structure can also be used as compounds containing groups with ethylene-like unsaturated bonds. For details regarding compounds having a caprolactone structure, please refer to paragraphs 0042 to 0045 of Japanese Patent Application Publication No. 2013-253224, which is incorporated herein by reference. Examples of compounds having a caprolactone structure include DPCA-20, DPCA-30, DPCA-60, and DPCA-120, which are commercially available from Nippon Kayaku Co., Ltd. as part of the KAYARAD DPCA series.

[0169] As compounds containing groups with vinyl unsaturated bonds, compounds containing groups with vinyl unsaturated bonds and compounds containing alkene groups can also be used. Such compounds are preferably compounds containing groups with vinyl unsaturated bonds and ethoxide and / or propoxy groups, more preferably compounds containing groups with vinyl unsaturated bonds and ethoxide groups, and even more preferably 3- to 6-functional (meth)acrylate compounds having 4 to 20 ethoxide groups. Examples of commercially available products include, for instance, a tetrafunctional (meth)acrylate having 4 ethyloxide groups (SR-494) manufactured by SARTOMER, and a trifunctional (meth)acrylate having 3 isobutyloxide groups (KAYARAD TPA-330).

[0170] As compounds containing groups with ethylene unsaturated bonds, polymerizable compounds with a fluorene skeleton can also be used. Examples of commercially available products include OGSOL EA-0200 and EA-0300 (manufactured by Osaka Gas Chemicals Co., Ltd., (meth)acrylate monomers with a fluorene skeleton).

[0171] Compounds containing groups with ethylene-like unsaturated bonds are preferred, as are compounds that do not substantially contain environmentally regulated substances such as toluene. Commercially available examples of such compounds include KAYARAD DPHALT and KAYARAD DPEA-12LT (manufactured by Nippon Kayaku Co., Ltd.).

[0172] Compounds containing groups with ethylene unsaturated bonds are also preferred, such as 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 (the above are manufactured by Taisei Fine Chemical Co., Ltd.), and LIGHT ACRYLATE POB-A0 (manufactured by KYOEISHA CHEMICAL Co., Ltd.).

[0173] Examples of compounds having a cyclic ether group include compounds having an epoxy group and compounds having an oxacyclobutyl group, with compounds having an epoxy group being preferred. Examples of compounds having an epoxy group include compounds having 1 to 100 epoxy groups per molecule. The upper limit of the number of epoxy groups can be, for example, 10 or less, or 5 or less. The lower limit of the number of epoxy groups is preferably 2 or more. Compounds having an epoxy group can also be those described in Japanese Patent Application Publication No. 2013-011869 (paragraphs 0034-0036), Japanese Patent Application Publication No. 2014-043556 (paragraphs 0147-0156), Japanese Patent Application Publication No. 2014-089408 (paragraphs 0085-0092), and Japanese Patent Application Publication No. 2017-179172, and these contents are incorporated herein by reference.

[0174] Compounds containing epoxy groups can be low molecular weight compounds (e.g., molecular weight less than 1000) or macromolecules (e.g., molecular weight 1000 or more, or weight-average molecular weight 1000 or more in polymers). The weight-average molecular weight of the epoxy-containing compound is preferably 200 to 100,000, more preferably 500 to 50,000. The upper limit of the weight-average molecular weight is preferably 10,000 or less, more preferably 5,000 or less, and even more preferably 3,000 or less.

[0175] Commercially available products containing cyclic ether groups include, for example, EHPE3150 (manufactured by DIC 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, polymers containing epoxy groups).

[0176] Examples of compounds containing a hydroxymethyl group (hereinafter also referred to as hydroxymethyl compounds) include compounds in which the hydroxymethyl group is bonded to a nitrogen atom or forms an aromatic ring on a carbon atom. Similarly, examples of compounds containing an alkoxymethyl group (hereinafter also referred to as alkoxymethyl compounds) include compounds in which the alkoxymethyl group is bonded to a nitrogen atom or forms an aromatic ring on a carbon atom. Preferably, compounds containing an alkoxymethyl group or a hydroxymethyl group bonded to a nitrogen atom include alkoxymethylated melamine, hydroxymethylated melamine, alkoxymethylated benzoguanamine, hydroxymethylated benzoguanamine, alkoxymethylated glycourea, hydroxymethylated glycourea, alkoxymethylated urea, and hydroxymethylated urea. Furthermore, compounds described in paragraphs 0134 to 0147 of Japanese Patent Application Publication No. 2004-295116 and paragraphs 0095 to 0126 of Japanese Patent Application Publication No. 2014-089408 can also be used.

[0177] (resin)

[0178] The coloring composition can use resin as a curing compound. The curing compound preferably includes at least a resin. The resin is formulated, for example, for dispersing pigments or the like in a resin composition or for use as an adhesive. Additionally, resins primarily used for dispersing pigments or the like in a resin composition are also called dispersants. This use of the resin is one example; it can also be used for purposes other than this. Furthermore, a resin having polymerizable groups is equivalent to a polymerizable compound.

[0179] The weight-average molecular weight (Mw) of the resin is preferably between 3,000 and 2,000,000. The upper limit is preferably below 1,000,000, more preferably below 500,000. The lower limit is preferably above 4,000, more preferably above 5,000.

[0180] Examples of resins include (meth)acrylic resins, epoxy resins, olefin-thiol resins, polycarbonate resins, polyether resins, polyarylate resins, polysulfone resins, polyethersulfone resins, polystyrene resins, polyarylene ether phosphine oxide resins, polyimide resins, polyamide-imide resins, polyolefin resins, cyclic olefin resins, polyester resins, and styrene resins. One of these resins can be used alone, or two or more can be mixed.

[0181] As the resin, a resin having acid groups is preferred. Examples of acid groups include carboxyl groups, phosphate groups, sulfonyl groups, and phenolic hydroxyl groups. There may be only one type of acid group or two or more. The resin having acid groups can also be used as a dispersant. By including the resin having acid groups in the coloring composition, a desired pattern can be formed by alkaline development. The acid value of the resin having acid groups is preferably 30 to 500 mg KOH / g. The lower limit is preferably 50 mg KOH / g or more, more preferably 70 mg KOH / g or more. The upper limit is preferably 400 mg KOH / g or less, more preferably 200 mg KOH / g or less, further preferably 150 mg KOH / g or less, and most preferably 120 mg KOH / g or less.

[0182] The coloring composition preferably includes a resin having a basic group. The resin having a basic group is preferably a resin containing repeating units with basic groups in the side chains, more preferably a copolymer having repeating units with basic groups in the side chains and repeating units without basic groups, and even more preferably a block copolymer having repeating units with basic groups in the side chains and repeating units without basic groups. 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 mg KOH / g. The lower limit is preferably 10 mg KOH / g or more, more preferably 20 mg KOH / g or more. The upper limit is preferably 200 mg KOH / g or less, more preferably 100 mg KOH / g or less. Examples of basic groups included in the resin having a basic group include groups represented by formula (a-1), groups represented by formula (a-2), etc.

[0183] [Chemical Formula 2]

[0184]

[0185] In equation (a-1), R a1 and R a2 Each of the following can be independently represented by a hydrogen atom, alkyl group, or aryl group; R a1 With R a2 They can bond together to form a ring;

[0186] In equation (a-2), R a11 R represents a hydrogen atom, hydroxyl group, alkyl group, alkoxy group, aryl group, aryloxy group, acyl group, or oxygen free radical. a12 ~R a19 Each can be represented independently as a hydrogen atom, alkyl group, or aryl group.

[0187] R a1 R a2 R a11 ~R a19The alkyl group represented preferably has 1 to 30 carbon atoms, more preferably 1 to 15, even more preferably 1 to 8, and particularly preferably 1 to 5. The alkyl group can be straight-chain, branched, or cyclic, preferably straight-chain or branched, and more preferably straight-chain. The alkyl group may have substituents.

[0188] R a1 R a2 R a11 ~R a19 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 substituents.

[0189] R a11 The alkoxy group preferably has 1 to 30 carbon atoms, more preferably 1 to 15, even more preferably 1 to 8, and particularly preferably 1 to 5. The alkoxy group may have substituents.

[0190] R a11 The aryloxy group preferably has 6 to 30 carbon atoms, more preferably 6 to 20, and even more preferably 6 to 12. The aryloxy group may have substituents.

[0191] R a11 The acyl group preferably has 2 to 30 carbon atoms, more preferably 2 to 20, and even more preferably 2 to 12. The acyl group may have substituents.

[0192] Commercially available resins containing 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 (the above are BYK Chemie). (6mbH manufactured), SOLSPERSE11200, 13240, 13650, 13940, 24000, 26000, 28000, 32000, 32500, 32550, 32600, 33000, 34750, 35100, 35200, 37500, 38500, 39000, 53095, 56000, 7100 (and above, manufactured by Japan Lubrizol Corporation), Efka PX 4300, 4330, 4046, 4060, 4080 (and above, manufactured by BASF Corporation), etc. Furthermore, the resins with alkaline groups can also use the block copolymer (B) described in paragraphs 0063 to 0112 of Japanese Patent Application Publication No. 2014-219665 and the block copolymer A1 described in paragraphs 0046 to 0076 of Japanese Patent Application Publication No. 2018-156021, and these contents are incorporated into this specification.

[0193] The coloring composition preferably comprises both an acidic resin and a basic resin. This method further improves the storage stability of the coloring composition. When using both acidic and basic resins, the content of the basic resin is preferably 20 to 500 parts by weight, more preferably 30 to 300 parts by weight, and even more preferably 50 to 200 parts by weight, relative to 100 parts by weight of the acidic resin.

[0194] As a resin, it is also preferable to have a resin containing repeating units derived from the compound represented by formula (ED1) and / or the compound represented by formula (ED2) (hereinafter, these compounds are sometimes referred to as "ether dimers").

[0195] [Chemical Formula 3]

[0196]

[0197] In equation (ED1), R 1 and R 2 Each can be independently represented by a hydrogen atom or a hydrocarbon group having 1 to 25 carbon atoms that may have substituents.

[0198] [Chemical Formula 4]

[0199]

[0200] In formula (ED2), R represents an organic group with 1 to 30 hydrogen atoms or carbon atoms. For a specific example of formula (ED2), please refer to Japanese Patent Application Publication No. 2010-168539.

[0201] For specific examples of ether dimers, please refer to paragraph 0317 of Japanese Patent Application Publication No. 2013-029760, which is incorporated herein by reference.

[0202] As a resin, a resin having a polymerizable group is preferred. The polymerizable group is preferably a group containing an ethylene unsaturated bond or a cyclic ether group, and more preferably a group containing an ethylene unsaturated bond.

[0203] As a resin, it is also preferable to use a resin that contains repeating units derived from the compound represented by formula (X).

[0204] [Chemical Formula 5]

[0205]

[0206] In the formula, R 1 R represents a hydrogen atom or a methyl group. 21 and R 22 Each alkylene group is represented independently, and n represents an integer from 0 to 15. R 21 and R 22 The alkylene group represented preferably has 1 to 10 carbon atoms, more preferably 1 to 5, even more preferably 1 to 3, and particularly preferably 2 or 3. n represents an integer from 0 to 15, preferably an integer from 0 to 5, more preferably an integer from 0 to 4, and even more preferably an integer from 0 to 3.

[0207] Examples of compounds represented by formula (X) include ethylene oxide or propylene oxide-modified (meth)acrylates of p-cumylphenol. Commercially available examples include ARONIX M-110 (manufactured by TOAGOSEI CO., LTD.).

[0208] As the resin, a resin having aromatic carboxyl groups (hereinafter also referred to as resin Ac) is preferred. In resin Ac, the aromatic carboxyl groups may be contained in the main chain of the repeating unit or in the side chain of the repeating unit. The aromatic carboxyl groups are preferably contained in the main chain of the repeating unit. In addition, in this specification, an aromatic carboxyl group refers to a group in which one or more carboxyl groups are bonded to an aromatic ring. In the aromatic carboxyl group, the number of carboxyl groups bonded to the aromatic ring is preferably 1 to 4, more preferably 1 to 2.

[0209] The resin Ac is preferably a resin comprising at least one repeating unit selected from repeating units represented by formula (Ac-1) and repeating units represented by formula (Ac-2). When the resin having an aromatic carboxyl group is a resin having a repeating unit represented by formula (Ac-2), the resin can preferably be used as a dispersant.

[0210] [Chemical Formula 6]

[0211]

[0212] In equation (Ac-1), Ar 1 L represents a group containing an aromatic carboxyl group. 1 Indicates -COO- or -CONH-, L 2 This indicates a divalent linker.

[0213] In equation (Ac-2), Ar 10 L represents a group containing an aromatic carboxyl group. 11 Indicates -COO- or -CONH-, L 12 P represents a trivalent linker. 10 This represents a polymer chain.

[0214] In equation (Ac-1), Ar is used as 1 Examples of aromatic carboxyl groups include structures derived from aromatic tricarboxylic anhydrides and structures derived from aromatic tetracarboxylic anhydrides. Examples of aromatic tricarboxylic anhydrides and aromatic tetracarboxylic anhydrides include compounds with the following structures.

[0215] [Chemical Formula 7]

[0216]

[0217] In the above formula, Q 1 It represents a single bond, -O-, -CO-, -COOCH2CH2OCO-, -SO2-, -C(CF3)2-, the group represented by formula (Q-1) or the group represented by formula (Q-2).

[0218] [Chemical Formula 8]

[0219]

[0220] Ar 1 The indicated group containing an aromatic carboxyl group may have a polymerizable group. The polymerizable group is preferably a group containing an ethylene unsaturated bond and a cyclic ether group, and more preferably a group containing an ethylene unsaturated bond.

[0221] As Ar 1Specific examples of groups containing aromatic carboxyl groups may include those represented by formula (Ar-11), formula (Ar-12), formula (Ar-13), etc.

[0222] [Chemical Formula 9]

[0223]

[0224] In formula (Ar-11), n1 represents an integer from 1 to 4, preferably 1 or 2, and more preferably 2.

[0225] In formula (Ar-12), n2 represents an integer from 1 to 8, preferably an integer from 1 to 4, more preferably 1 or 2, and even more preferably 2.

[0226] In formula (Ar-13), n3 and n4 independently represent integers from 0 to 4, preferably integers from 0 to 2, more preferably 1 or 2, and even more preferably 1. At least one of n3 and n4 is an integer greater than or equal to 1.

[0227] In equation (Ar-13), Q 1 It represents a single bond, -O-, -CO-, -COOCH2CH2OCO-, -SO2-, -C(CF3)2-, the group represented by formula (Q-1) above, or the group represented by formula (Q-2) above.

[0228] In equations (Ar-11) to (Ar-13), *1 indicates that it is related to L. 1 The bonding positions.

[0229] In equation (Ac-1) L 1 It can be represented as -COO- or -CONH-, with -COO- being preferred.

[0230] As L in equation (Ac-1) 2 Examples of divalent linkers include alkylene, arylene, -O-, -CO-, -COO-, -OCO-, -NH-, -S-, and groups formed by combining two or more of these. The alkylene group preferably has 1 to 30 carbon atoms, more preferably 1 to 20, and even more preferably 1 to 15. The alkylene group can be straight-chain, branched, or cyclic. The arylene group preferably has 6 to 30 carbon atoms, more preferably 6 to 20, and even more preferably 6 to 10. Both the alkylene and arylene groups can have substituents. Examples of substituents include hydroxyl groups. The divalent linker represented by L2 is preferably -L. 2a -O- represents the group. L 2aExamples of substituents include: alkylene; arylene; groups formed by combining alkylene and arylene; groups formed by combining at least one selected from alkylene and arylene and at least one selected from -O-, -CO-, -COO-, -OCO-, -NH-, and -S-, preferably alkylene. The alkylene group preferably has 1 to 30 carbon atoms, more preferably 1 to 20, and even more preferably 1 to 15. The alkylene group can be straight-chain, branched, or cyclic. The alkylene and arylene groups can have substituents. Examples of substituents include hydroxyl groups.

[0231] In equation (Ac-2), Ar is used as 10 The group represented by the aromatic carboxyl group is the same as Ar in formula (Ac-1). 1 The meanings are the same, and the preferred ranges are also the same.

[0232] In formula (Ac-2) L 11 It can be represented as -COO- or -CONH-, with -COO- being preferred.

[0233] In equation (Ac-2), L is used as 12 The trivalent linker can be categorized as a hydrocarbon group, -O-, -CO-, -COO-, -OCO-, -NH-, -S-, and groups formed by combining two or more of these. Examples of hydrocarbon groups include aliphatic hydrocarbon groups and aromatic hydrocarbon groups. The aliphatic hydrocarbon group preferably has 1 to 30 carbon atoms, more preferably 1 to 20, and even more preferably 1 to 15. The aliphatic hydrocarbon group can be straight-chain, branched, or cyclic. The aromatic hydrocarbon group preferably has 6 to 30 carbon atoms, more preferably 6 to 20, and even more preferably 6 to 10. The hydrocarbon group can have substituents. Examples of substituents include hydroxyl groups. 12 The trivalent linker is preferably the group represented by formula (L12-1), and more preferably the group represented by formula (L12-2).

[0234] [Chemical Formula 10]

[0235]

[0236] In equation (L12-1), L 12b X represents a trivalent linker base. 1 S represents S, and *1 represents L in equation (Ac-2). 11 The bonding position, *2 indicates the P in equation (Ac-2) 10 The bonding position. As L 12bExamples of trivalent linking groups include: hydrocarbon groups; groups formed by combining a hydrocarbon group with at least one selected from -O-, -CO-, -COO-, -OCO-, -NH- and -S-, preferably hydrocarbon groups or groups formed by combining a hydrocarbon group with -O-.

[0237] In equation (L12-2), L 12c X represents a trivalent linker base. 1 S represents S, and *1 represents L in equation (Ac-2). 11 The bonding position, *2 indicates the P in equation (Ac-2) 10 The bonding position. As L 12c Examples of trivalent linking groups include: hydrocarbon groups; groups formed by combining a hydrocarbon group with at least one selected from -O-, -CO-, -COO-, -OCO-, -NH- and -S-, preferably hydrocarbon groups.

[0238] In equation (Ac-2), P 10 P represents a polymer chain. 10 The polymer chain represented preferably has at least one repeating unit selected from poly(meth)acrylic acid repeating units, polyether repeating units, polyester repeating units, and polyol repeating units. Polymer chain P 10 The weight-average molecular weight is preferably 500 to 20,000. The lower limit is preferably 1,000 or more. The upper limit is preferably 10,000 or less, more preferably 5,000 or less, and even more preferably 3,000 or less. As long as P... 10 If the weight-average molecular weight is within the above range, the pigment in the composition has good dispersibility.

[0239] P 10 The polymer chain represented may contain polymerizable groups. The polymerizable groups are preferably groups containing vinyl unsaturated bonds and cyclic ether groups, and more preferably groups containing vinyl unsaturated bonds.

[0240] In equation (Ac-2), P 10 The polymer chain represented is preferably a polymer chain containing repeating units represented by the following formulas (P-1) to (P-5), and more preferably a polymer chain containing repeating units represented by (P-5).

[0241] [Chemical Formula 11]

[0242]

[0243] In the above formula, R P1 and R P2 Each represents an alkylene group. As R P1 and R P2The alkylene group represented is preferably a straight-chain or branched alkylene group having 1 to 20 carbon atoms, more preferably a straight-chain or branched alkylene group having 2 to 16 carbon atoms, and even more preferably a straight-chain or branched alkylene group having 3 to 12 carbon atoms.

[0244] In the above formula, R P3 It represents a hydrogen atom or a methyl group.

[0245] In the above formula, L P1 L represents a single bond or an aryl group. P2 Represents a single bond or a divalent linker. LP 1优 Select as a single key. As L P2 Examples of divalent linking groups include alkylene (preferably alkylene with 1 to 12 carbon atoms), arylene (preferably arylene with 6 to 20 carbon atoms), -NH-, -SO-, -SO2-, -CO-, -O-, -COO-, -OCO-, -S-, -NHCO-, -CONH-, and groups formed by combining two or more of these.

[0246] R P4 This represents a hydrogen atom or a substituent. Examples of substituents include hydroxyl, carboxyl, alkyl, aryl, heteroaryl, alkoxy, aryloxy, heteroaryloxy, alkyl thioether, aryl thioether, heteroaryl thioether, and groups containing vinyl unsaturated bonds.

[0247] Furthermore, P 10 The polymer chain represented is more preferably a polymer chain having repeating units containing groups with vinyl unsaturated bonds in its side chains. Furthermore, repeating units containing groups with vinyl unsaturated bonds in the side chains constitute P. 10 The proportion of all repeating units is preferably 5% by mass or more, more preferably 10% by mass or more, and even more preferably 20% by mass or more. The upper limit can be set to 100% by mass, preferably 90% by mass or less, and even more preferably 60% by mass or less.

[0248] Furthermore, P 10 The polymer chain represented preferably has repeating units containing acid groups. Examples of acid groups include carboxyl groups, phosphate groups, sulfonyl groups, and phenolic hydroxyl groups. In this manner, the dispersibility of colorants such as pigments in the coloring composition can be further improved. Furthermore, the developability can be further improved, and the occurrence of developing residues can be further suppressed. The proportion of repeating units containing acid groups is preferably 1 to 30% by mass, more preferably 2 to 20% by mass, and even more preferably 3 to 10% by mass.

[0249] The resin Ac may further include repeating units represented by formula (Ac-10).

[0250] [Chemical Formula 12]

[0251]

[0252] In formula (Ac-10), Ar 21 L represents a group containing an aromatic carboxyl group. 21 and L 22 Representing -COO- or -CONH- independently, R 21 This refers to a group containing an ethylene-like unsaturated bond.

[0253] As Ar 21 The groups representing aromatic carboxyl groups can be exemplified by structures derived from aromatic tricarboxylic anhydrides, structures derived from aromatic tetracarboxylic anhydrides, etc.

[0254] As Ar 21 Specific examples of groups containing aromatic carboxyl groups may include those represented by formula (Ar-21), formula (Ar-22), formula (Ar-23), etc.

[0255] [Chemical Formula 13]

[0256]

[0257] In formula (Ar-21), n11 represents an integer from 1 to 3, preferably 1 or 2.

[0258] In formula (Ar-22), n12 represents an integer from 1 to 7, preferably an integer from 1 to 4, and more preferably 1 or 2.

[0259] In formula (Ar-23), n13 and n14 independently represent integers from 0 to 4, preferably integers from 0 to 2, more preferably 1 or 2, and even more preferably 1. At least one of n13 and n14 is an integer greater than or equal to 1.

[0260] In equation (Ar-23), Q 1 It represents a single bond, -O-, -CO-, -COOCH2CH2OCO-, -SO2-, -C(CF3)2-, the group represented by formula (Q-1) above, or the group represented by formula (Q-2) above.

[0261] In formula (Ac-10), L 21 and L 22 The preferred option is -COO-.

[0262] As R in equation (Ac-10) 21Examples of groups containing vinyl unsaturated bonds include vinyl, vinylphenyl, (meth)allyl, (meth)acryloyl, (meth)acryloyloxy, (meth)acrylamide, etc., preferably (meth)allyl, (meth)acryloyl and (meth)acryloyloxy, more preferably (meth)acryloyloxy.

[0263] R 21 There is no particular limitation on the number of groups containing ethylene unsaturated bonds in the indicated group, but from the viewpoint of developability and curability, it is preferably 1 to 10, more preferably 1 to 6, even more preferably 1 or 2, and especially preferably 1.

[0264] R in equation (Ac-10) 21 In this formula, the group containing an ethylene unsaturated bond can react with Ar in formula (Ac-10). 21 Direct bonding or bonding via a linker group is possible. The number of carbon atoms in the linker group is not particularly limited, but is preferably 1 to 40, more preferably 1 to 20, even more preferably 2 to 9, and particularly preferably 3 to 5. Furthermore, the linker group is preferably an aliphatic group, preferably a group formed by bonding a divalent aliphatic hydrocarbon group or one or more divalent aliphatic hydrocarbon groups with one or more structures selected from ether bonds, ester bonds, amide bonds, carbamate bonds, and urea bonds. Moreover, the linker group may have substituents such as hydroxyl or amino groups. Hydroxyl groups are preferably included as substituents.

[0265] The resin preferably includes a resin as a dispersant. Examples of dispersants include acidic dispersants (acidic resins) and basic dispersants (basic resins). An acidic dispersant (acidic resin) refers to a resin in which the amount of acid groups exceeds the amount of basic groups. Similarly, a basic dispersant (basic resin) refers to a resin in which the amount of basic groups exceeds the amount of acid groups.

[0266] As an acidic dispersant (acidic resin), when the total amount of acidic groups and basic groups is set to 100 mol%, a resin with an acidic group amount of 70 mol% or more is preferred. The acidic groups in the acidic dispersant (acidic resin) are preferably carboxyl groups. The acid value of the acidic dispersant (acidic resin) is preferably 5 to 200 mg KOH / g. The upper limit is preferably 150 mg KOH / g or less, more preferably 100 mg KOH / g or less, and even more preferably 80 mg KOH / g or less. The lower limit is preferably 10 mg KOH / g or more, more preferably 15 mg KOH / g or more, and even more preferably 20 mg KOH / g or more.

[0267] As an alkaline dispersant (alkaline resin), when the total amount of acid groups and alkaline groups is set to 100 mol%, a resin with an alkaline group amount of 60 mol% or more is preferred. The alkaline groups in the alkaline dispersant are preferably amino groups. The amine value of the alkaline dispersant (alkaline resin) is preferably 5 to 100 mg KOH / g. The upper limit is preferably 80 mg KOH / g or less, more preferably 60 mg KOH / g or less, and even more preferably 45 mg KOH / g or less. The lower limit is preferably 10 mg KOH / g or more, more preferably 15 mg KOH / g or more, and even more preferably 20 mg KOH / g or more.

[0268] The resin used as a dispersant is preferably a grafted resin. Detailed information about grafted resins can be found in paragraphs 0025 to 0094 of Japanese Patent Application Publication No. 2012-255128, and this information is incorporated herein by reference.

[0269] The resin used as a dispersant is preferably a resin having aromatic carboxyl groups (resin Ac). Examples of resins having aromatic carboxyl groups include those described above.

[0270] The resin used as a dispersant is preferably a polyimide-based dispersant containing a nitrogen atom in at least one of the main chain and side chains. As a polyimide-based dispersant, a resin having a main chain and side chains, with at least one of the main chain and side chains containing a basic nitrogen atom, is preferred. The main chain contains a partial structure with functional groups having a pKa of 14 or less, and the side chains have 40 to 10,000 atoms. There are no particular limitations on the basic nitrogen atom, as long as it exhibits a basic nature. For information on polyimide-based dispersants, please refer to paragraphs 0102 to 0166 of Japanese Patent Application Publication No. 2012-255128, the contents of which are incorporated herein by reference.

[0271] The resin used as a dispersant is preferably a resin with a structure in which multiple polymer chains are bonded to the core. Examples of such resins include dendritic polymers (including star polymers). Specific examples of dendritic polymers include polymers C-1 to C-31 as described in paragraphs 0196 to 0209 of Japanese Patent Application Publication No. 2013-043962.

[0272] The resin used as a dispersant is preferably a resin containing groups with ethylene unsaturated bonds. Furthermore, the dispersant may also include the resin described in Japanese Patent Application Publication No. 2018-087939, the polyethyleneimine with polyester side chains described in International Publication No. 2016 / 104803, the block copolymer described in International Publication No. 2019 / 125940, the block polymer with acrylamide structural units described in Japanese Patent Application Publication No. 2020-066687, the block polymer with acrylamide structural units described in Japanese Patent Application Publication No. 2020-066688, and the block copolymers (EB-1) to (EB-9) described in paragraphs 0219 to 0221 of Japanese Patent Publication No. 6432077.

[0273] Dispersants are also available as commercially available products. Specific examples include the DISPERBYK series manufactured by BYK Chemie GmbH, the SOLSPERSE series manufactured by Japan Lubrizol Corporation, the Efka series manufactured by BASF, and the Ajisper series manufactured by Ajinomoto Fine-Techno Co., Inc. Furthermore, the products described in paragraph 0129 of Japanese Patent Application Publication No. 2012-137564 and paragraph 0235 of Japanese Patent Application Publication No. 2017-194662 can also be used as dispersants.

[0274] The content of the curable compound in the total solids component of the coloring composition is preferably 1 to 35% by mass. The lower limit is preferably 2% by mass or more, more preferably 5% by mass or more, and even more preferably 7% by mass or more. The upper limit is preferably less than 25% by mass, and more preferably less than 15% by mass. There may be only one type of curable compound or two or more types. When there are two or more types, it is preferable that their total amount is within the above-mentioned range.

[0275] When the coloring composition contains a polymeric compound as a curing compound, the content of the polymeric compound in the total solids component of the coloring composition is preferably 1 to 30% by mass. The lower limit is preferably 2% by mass or more, more preferably 3% by mass or more, and even more preferably 4% by mass or more. The upper limit is preferably less than 20% by mass, and more preferably 10% by mass or less.

[0276] Furthermore, when the coloring composition contains a polymerizable monomer as a curing compound, the content of the polymerizable monomer in the total solids component of the coloring composition is preferably 1 to 30% by mass. The lower limit is preferably 2% by mass or more, more preferably 3% by mass or more, and even more preferably 4% by mass or more. The upper limit is preferably less than 20% by mass, and more preferably 10% by mass or less.

[0277] Furthermore, when the coloring composition contains a compound having a group containing an ethylene unsaturated bond as a curing compound, the content of the compound having a group containing an ethylene unsaturated bond in the total solids component of the coloring composition is preferably 1 to 30% by mass. The lower limit is preferably 2% by mass or more, more preferably 3% by mass or more, and even more preferably 4% by mass or more. The upper limit is preferably less than 20% by mass, and more preferably 10% by mass or less.

[0278] When the coloring composition contains a compound having a cyclic ether group as a curing compound, the content of the compound having a cyclic ether group in the total solids component of the coloring composition is preferably 0.5 to 10% by mass. The lower limit is preferably 1.0% by mass or more, more preferably 1.5% by mass or more, and even more preferably 2.0% by mass or more. The upper limit is preferably less than 8% by mass, and more preferably 6% by mass or less.

[0279] When the coloring composition contains a resin as a curing compound, the resin content in the total solids component of the coloring composition is preferably 0.1% to 35% by mass. The lower limit is preferably 1% by mass or more, more preferably 3% by mass or more, and even more preferably 5% by mass or more. The upper limit is preferably less than 30% by mass, and more preferably 25% by mass or less. Furthermore, the content of resins containing acid groups in the resin included in the coloring composition is preferably 50% to 100% by mass, more preferably 75% to 100% by mass, and even more preferably 90% to 100% by mass.

[0280] When the coloring composition contains polymerizable monomers and resins as curable compounds, the total content of polymerizable monomers and resins in the total solids component of the coloring composition is preferably 5 to 45% by mass. The lower limit is preferably 10% by mass or more, more preferably 15% by mass or more, and even more preferably 20% by mass or more. The upper limit is preferably less than 40% by mass, and more preferably 35% by mass or less.

[0281] <<Photopolymerization Initiator>>

[0282] The coloring composition preferably contains a photopolymerization initiator. There are no particular limitations on the photopolymerization initiator; it can be appropriately selected from known photopolymerization initiators. For example, a compound sensitive to light in the ultraviolet to visible light region is preferred. The photopolymerization initiator is preferably a photoradical polymerization initiator.

[0283] Examples of photopolymerization initiators include halogenated hydrocarbon derivatives (e.g., compounds with a triazine skeleton, compounds with an oxadiazole skeleton, etc.), acylphosphine compounds, hexaaryl diimidazoles, oxime compounds, organic peroxides, sulfur compounds, ketone compounds, aromatic onium salts, α-hydroxy ketone compounds, and α-amino ketone compounds. From the viewpoint of exposure sensitivity, photopolymerization initiators are preferably trihalomethane triazine compounds, benzyl dimethyl ketal compounds, α-hydroxy ketone compounds, α-amino ketone compounds, acylphosphine compounds, phosphine oxide compounds, metallocene compounds, oxime compounds, triaryl imidazolium dimers, onium compounds, benzothiazole compounds, diphenyl ketone compounds, acetophenone compounds, cyclopentadiene-benzene-iron complexes, halomethyl oxadiazole compounds, and 3-aryl substituted coumarin compounds. More preferably, they are compounds selected from oxime compounds, α-hydroxy ketone compounds, α-amino ketone compounds, and acylphosphine compounds. Oxime compounds are even more preferred. Furthermore, examples of photopolymerization initiators include paragraphs 0065 to 0111 of Japanese Patent Application Publication No. 2014-130173, compounds described in Japanese Patent No. 6301489, and MATERIAL STAGE. The peroxide-based photopolymerization initiators described in 37-60p, vol.19, No.3, 2019, the photopolymerization initiators described in International Publication No. 2018 / 221177, the photopolymerization initiators described in International Publication No. 2018 / 110179, the photopolymerization initiators described in Japanese Patent Application Publication No. 2019-043864, the photopolymerization initiators described in Japanese Patent Application Publication No. 2019-044030, the peroxide-based initiators described in Japanese Patent Application Publication No. 2019-167313, the oxazolidinyl-containing aminoacetophenone-based initiators described in Japanese Patent Application Publication No. 2020-055992, and the oxime-based photopolymerization initiators described in Japanese Patent Application Publication No. 2013-190459, etc., are all incorporated herein by reference.

[0284] Commercially available α-hydroxy ketone compounds include Omnirad 184, Omnirad 1173, Omnirad 2959, Omnirad 127 (manufactured by IGM Resins BV), Irgacure 184, Irgacure 1173, Irgacure 2959, and Irgacure 127 (manufactured by BASF). Commercially available α-amino ketone compounds include Omnirad 907, Omnirad 369, Omnirad 369E, Omnirad 379EG (manufactured by IGM Resins BV), Irgacure 907, Irgacure 369, Irgacure 369E, and Irgacure 379EG (manufactured by BASF). Commercially available acylphosphine compounds include Omnirad 819, Omnirad TPO (manufactured by IGMresins BV), Irgacure 819, and Irgacure TPO (manufactured by BASF).

[0285] Examples of oxime compounds include those described in Japanese Patent Application Publication No. 2001-233842, Japanese Patent Application Publication No. 2000-080068, Japanese Patent Application Publication No. 2006-342166, JCS Perkin II (1979, pp. 1653-1660), JCS Perkin II (1979, pp. 156-162), and the Journal of Photopolymer Science and... Compounds described in Japanese Patent Application Publication No. 2000-066385, Japanese Patent Application Publication No. 2004-534797, Japanese Patent Application Publication No. 2006-342166, Japanese Patent Application Publication No. 2017-019766, Japanese Patent No. 6065596, International Publication No. 2015 / 152153, International Publication No. 2017 / 051680, Japanese Patent Application Publication No. 2017-198865, International Publication No. 2017 / 164127 (paragraphs 0025-0038), and International Publication No. 2013 / 167515, etc. Specific examples of oxime compounds include 3-benzoyloxyiminobutane-2-one, 3-acetoxyiminobutane-2-one, 3-propionyloxyiminobutane-2-one, 2-acetoxyiminopentane-3-one, 2-acetoxyimino-1-phenylpropane-1-one, 2-benzoyloxyimino-1-phenylpropane-1-one, 3-(4-toluenesulfonyloxy)iminobutane-2-one, and 2-ethoxycarbonyloxyimino-1-phenylpropane-1-one. Examples of commercially available products include Irgacure OXE01, Irgacure OXE02, Irgacure OXE03, and Irgacure OXE04 (manufactured by BASF), TR-PBG-304 (manufactured by Changzhou Tronly New Electronic Materials CO., LTD.), and ADEKAOPTOMER N-1919 (manufactured by ADEKA CORPORATION, photopolymerization initiator 2 as described in Japanese Patent Application Publication No. 2012-014052). Furthermore, as oxime compounds, compounds that are colorless or highly transparent and resistant to discoloration are preferred.Commercially available products include ADEKA ARKLS NCI-730, NCI-831, and NCI-930 (all manufactured by ADEKACORPORATION).

[0286] Oxime compounds having a fluorene ring can also be used as photopolymerization initiators. Specific examples of oxime compounds having a fluorene ring include the compound described in Japanese Patent Application Publication No. 2014-137466, the compound described in Japanese Patent Publication No. 6636081, and the compound described in Korean Patent Publication No. 10-2016-0109444.

[0287] Oxime compounds having at least one benzene ring in the carbazole ring as the backbone of the naphthalene ring can also be used as photopolymerization initiators. Specific examples of such oxime compounds include the compound described in International Publication No. 2013 / 083505.

[0288] Oxime compounds having fluorine atoms can also be used as photopolymerization initiators. Specific examples of oxime compounds having fluorine atoms include the compound described in Japanese Patent Application Publication No. 2010-262028, compounds 24, 36-40 described in Japanese Patent Application Publication No. 2014-500852, and compound (C-3) described in Japanese Patent Application Publication No. 2013-164471.

[0289] Oxime compounds with nitro groups can be used as photopolymerization initiators. Oxime compounds with nitro groups are also preferably dimers. Specific examples of oxime compounds with nitro groups include the compounds described in paragraphs 0031 to 0047 of Japanese Patent Application Publication No. 2013-114249, paragraphs 0008 to 0012 and 0070 to 0079 of Japanese Patent Application Publication No. 2014-137466, the compounds described in paragraphs 0007 to 0025 of Japanese Patent Application No. 4223071, and ADEKA ARKLS NCI-831 (manufactured by ADEKA CORPORATION).

[0290] Oxime compounds having a benzofuran skeleton can also be used as photopolymerization initiators. Specific examples include OE-01 to OE-75 as described in International Publication No. 2015 / 036910.

[0291] Oxime compounds with hydroxyl substituents bonded to the carbazole skeleton can also be used as photopolymerization initiators. Examples of such photopolymerization initiators include compounds described in International Publication No. 2019 / 088055.

[0292] As a photopolymerization initiator, Ar aromatic cyclic groups with electron-withdrawing groups introduced into the aromatic ring can also be used. OX1 Oxime compounds (hereinafter also referred to as oxime compounds OX). As the above aromatic cyclic group Ar... OX1 Examples of electron-withdrawing groups include acyl, nitro, trifluoromethyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, and cyano groups. Acyl and nitro groups are preferred, and acyl groups are more preferred for the sake of easily forming films with excellent lightfastness. Benzoyl groups may have substituents. Substituents are preferably halogen atoms, cyano, nitro, hydroxyl, alkyl, alkoxy, aryl, aryloxy, heterocyclic, heterocyclic, alkenyl, alkylthioalkyl, arylthioalkyl, acyl, or amino groups. More preferably, alkyl, alkoxy, aryl, aryloxy, heterocyclic, alkylthioalkyl, or amino groups are preferred, and alkoxy, alkylthioalkyl, or amino groups are even more preferred.

[0293] The oxime compound OX is preferably selected from at least one of the compounds represented by formula (OX1) and the compounds represented by formula (OX2), and more preferably the compound represented by formula (OX2).

[0294] [Chemical Formula 14]

[0295]

[0296] In the formula, R X1 This indicates alkyl, alkenyl, alkoxy, aryl, aryloxy, heterocyclic, heterocyclic, alkylthioalkyl, arylthioalkyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, acyl, acyloxy, amino, phosphonyl, carbamoyl, or aminosulfonyl.

[0297] R X2 This indicates alkyl, alkenyl, alkoxy, aryl, aryloxy, heterocyclic, heterocyclic, alkylthioalkyl, arylthioalkyl, alkylsulfinyl, arylsulfinyl, alkylsulfonyl, arylsulfonyl, acyloxy, or amino.

[0298] R X3 ~R X14 Each can be used independently to represent a hydrogen atom or a substituent;

[0299] Among them, R X10 ~R X14 At least one of them is an electron-withdrawing group.

[0300] In the above formula, R is preferred. X12 R is an electron-withdrawing group. X10 R X11 R X13 and R X14 It is a hydrogen atom.

[0301] As a specific example of the oxime compound OX, the compound described in paragraphs 0083 to 0105 of Japanese Patent No. 4600600 can be cited.

[0302] The following are specific examples of oxime compounds that are preferably used in this invention, but the invention is not limited to these.

[0303] [Chemical Formula 15]

[0304]

[0305] [Chemical Formula 16]

[0306]

[0307] The oxime compound is preferably a compound having a maximum absorption wavelength in the range of 350–500 nm, more preferably a compound having a maximum absorption wavelength in the range of 360–480 nm. Furthermore, from the viewpoint of sensitivity, the molar absorptivity of the oxime compound at wavelengths of 365 nm or 405 nm is preferably high, more preferably 1,000–300,000, even more preferably 2,000–300,000, and particularly preferably 5,000–200,000. The molar absorptivity of the compound can be determined using known methods. For example, it is preferably determined using a spectrophotometer (a Cary-5 spectrophotometer manufactured by Varian) with ethyl acetate solvent at a concentration of 0.01 g / L.

[0308] As photopolymerization initiators, photoradical polymerization initiators with two or more functionalities can be used. By using such photoradical polymerization initiators, two or more free radicals are generated from one molecule of the initiator, thus achieving good sensitivity. Furthermore, when using compounds with asymmetric structures, crystallinity decreases while solubility in organic solvents and the like increases, making it less prone to precipitation over time and improving the long-term stability of the coloring composition. Specific examples of photoradical polymerization initiators with two or more functionalities include dimers of oxime compounds described in Japanese Patent Application Publication Nos. 2010-527339, 2011-524436, International Publication No. 2015 / 004565, paragraphs 0407-0412 of Japanese Patent Application Publication No. 2016-532675, and paragraphs 0039-0055 of International Publication No. 2017 / 033680, as well as compounds (E) described in Japanese Patent Application Publication No. 2013-522445. The photoinitiators described in Japanese Patent Publication No. 2016 / 034963 include: compounds (G), Cmpd1 to 7, oxime ester photoinitiators described in paragraph 0007 of Japanese Patent Publication No. 2017-523465, photoinitiators described in paragraphs 0020 to 0033 of Japanese Patent Application Publication No. 2017-167399, photopolymerization initiators (A) described in paragraphs 0017 to 0026 of Japanese Patent Application Publication No. 2017-151342, and oxime ester photoinitiators described in Japanese Patent Publication No. 6469669.

[0309] The content of photopolymerization initiator in the total solids component of the coloring composition is preferably 0.1% to 30% by mass. The lower limit is preferably 0.5% by mass or more, more preferably 1% by mass or more. The upper limit is preferably 20% by mass or less, more preferably 15% by mass or less. In the coloring composition, 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 of these is preferably within the above-mentioned range.

[0310] <<Pigment Derivatives>>

[0311] The coloring composition preferably contains a pigment derivative. Examples of pigment derivatives include compounds having an acidic or basic group bonded to a pigment skeleton. Examples of pigment skeletons constituting the pigment derivative include quinoline pigment skeletons, benzimidazolone pigment skeletons, benzisonidoline pigment skeletons, benzothiazole pigment skeletons, imine pigment skeletons, squaric acid pigment skeletons, ketoneonium pigment skeletons, oxacyanine pigment skeletons, pyrrolopyrrole pigment skeletons, diketopyrrolopyrrole pigment skeletons, azo pigment skeletons, azomethine pigment skeletons, phthalocyanine pigment skeletons, naphthylphthalocyanine pigment skeletons, anthraquinone pigment skeletons, bianthrone pigment skeletons, quinacrine pigment skeletons, dioxazine pigment skeletons, and violet ketone pigment skeletons. The preferred pigments include phthalocyanine, diketopyrrole, pyrrole, isoindoline, isoindolineone, quinophthalone, imine, dithiol, triarylmethane, and pyrrole methylene, with phthalocyanine, diketopyrrole, pyrrole-pyrrole, benzisoindoline, anthraquinone, bianthrone, thiazide indigo, azo, quinophthalone, or quinacrine pigments. As acid groups, sulfonyl, carboxyl, phosphate, and their salts can be included. As atoms or groups constituting the salt, alkali metal ions (Li) can be included. + Na + K + (etc.), alkaline earth metal ions (Ca 2+ Mg 2+ Examples of basic groups include amino groups, pyridinium groups and their salts, ammonium salts, pyridinium salts, and phthalimide methyl groups. Examples of atoms or groups constituting salts include hydroxide ions, halide ions, carboxylic acid ions, sulfonic acid ions, and phenoxy ions.

[0312] As a pigment derivative, pigment derivatives with excellent visible transparency (hereinafter also referred to as transparent pigment derivatives) can also be used. The maximum value (εmax) of the molar absorptivity of the transparent pigment derivative in the wavelength region of 400–700 nm is preferably 3000 L·mol⁻¹. -1 ·cm -1 The following is more preferably 1000 L·mol -1 ·cm -1 Hereinafter, 100 L·mol is further preferred. -1 ·cm -1 The lower limit of εmax is, for example, 1 L·mol⁻¹. -1 ·cm -1 The above can also be 10 L·mol -1 ·cm -1 above.

[0313] Specific examples of pigment derivatives include the compounds described in the examples described below, Japanese Patent Application Publication No. 56-118462, Japanese Patent Application Publication No. 63-264674, Japanese Patent Application Publication No. 01-217077, Japanese Patent Application Publication No. 03-009961, Japanese Patent Application Publication No. 03-026767, Japanese Patent Application Publication No. 03-153780, Japanese Patent Application Publication No. 03-045662, Japanese Patent Application Publication No. 04-285669, Japanese Patent Application Publication No. 06-145546, Japanese Patent Application Publication No. 06-212088, Japanese Patent Application Publication No. 06-240158, Japanese Patent Application Publication No. 10-030063, Japanese Patent Application Publication No. 10-195326, and International Publication No. Paragraphs 0086-0098 of Japanese Patent Application Publication No. 2011 / 024896, paragraphs 0063-0094 of International Patent Application Publication No. 2012 / 102399, paragraph 0082 of International Patent Application Publication No. 2017 / 038252, paragraph 0171 of Japanese Patent Application Publication No. 2015-151530, paragraphs 0162-0183 of Japanese Patent Application Publication No. 2011-252065, and Japanese Patent Application Publication No. 2011-252065. The compounds described in Japanese Patent Publication No. 2003-081972, Japanese Patent Publication No. 5299151, Japanese Unexamined Patent Publication No. 2015-172732, Japanese Unexamined Patent Publication No. 2014-199308, Japanese Unexamined Patent Publication No. 2014-085562, Japanese Unexamined Patent Publication No. 2014-035351, and Japanese Unexamined Patent Publication No. 2008-081565.

[0314] The content of pigment derivatives in the total solids component of the coloring composition is preferably 0.3 to 20% by mass. The lower limit is preferably 0.6% by mass or more, more preferably 0.9% by mass or more. The upper limit is preferably 15% by mass or less, more preferably 12.5% ​​by mass or less, and even more preferably 10% by mass or less. Furthermore, the content of pigment derivatives relative to 100 parts by mass of pigment is preferably 1 to 30 parts by mass. The lower limit is preferably 2 parts by mass or more, more preferably 3 parts by mass or more. The upper limit is preferably 25 parts by mass or less, more preferably 20 parts by mass or less, and even more preferably 15% by mass or less. In the coloring composition, only one type of pigment derivative may be used, or two or more may be used in combination. When two or more are used in combination, the total amount of these is preferably within the above-mentioned range.

[0315] <<Specific Amine Compounds>>

[0316] The coloring composition contains three or more basic groups in one molecule, and may also contain compounds with an amine value of 2.7 mmol / g or more and a molecular weight of 100 or more (hereinafter also referred to as specific amine compounds).

[0317] The molecular weight of the specific amine compound 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, further preferably 10,000 or less, and particularly preferably 2,000 or less. Furthermore, regarding the molecular weight of the specific amine compound, if the molecular weight can be calculated from the structural formula, the molecular weight of the specific amine compound 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 is difficult to calculate, the number-average molecular weight value determined by the boiling point elevation method is used. Furthermore, if the boiling point elevation method is also not feasible to determine, or is difficult to determine, the number-average molecular weight value determined by the viscosity method is used. Furthermore, if the viscosity method is also not feasible to determine, or is difficult to determine by the viscosity method, the number-average molecular weight value from the polystyrene conversion value determined by GPC (gel permeation chromatography) is used.

[0318] The amine value of the specific amine compound is preferably 5 mmol / g or more, more preferably 10 mmol / g or more, and even more preferably 15 mmol / g or more.

[0319] The number of basic groups contained in the specific amine compound is preferably 4 or more, more preferably 6 or more, and even more preferably 10 or more.

[0320] The basic group of the specific amine compound is preferably an amino group. Furthermore, the specific amine compound is preferably a compound having a primary amino group, more preferably a compound containing both a primary amino group and a tertiary amino group, and even more preferably a compound containing both a primary amino group, a secondary amino group, and a tertiary amino group.

[0321] Furthermore, the amino group of the specific amine compound can be a cyclic amino group. The cyclic amino group can be an aliphatic cyclic amino group such as piperidinyl, or an aromatic cyclic amino group such as pyridinyl. The cyclic amino group is preferably a cyclic amino group having a 5-membered or 6-membered ring structure, more preferably a cyclic amino group having a 6-membered ring structure, and even more preferably an aliphatic cyclic amino group having a 6-membered ring structure. The cyclic amino group preferably has a hindered amine structure, and particularly preferably a hindered amine structure having a 6-membered ring. As a hindered amine structure, it is preferable that alkyl or other substituents are present on the two carbon atoms of the ring structure adjacent to the nitrogen atom of the cyclic amino group. Examples of cyclic amino groups having a hindered amine structure include 1,2,2,6,6-pentamethylpiperidinyl, 2,2,6,6-tetramethylpiperidinyl, 1,2,6,6-trimethylpiperidinyl, 2,6-dimethylpiperidinyl, 1-methyl-2,6-di(tert-butyl)piperidinyl, 2,6-di(tert-butyl)piperidinyl, 1,2,2,5,5-methylpyrrolyl, and 2,2,5,5-tetramethylpyrrolyl. Preferably, 1,2,2,6,6-pentamethylpiperidinyl or 2,2,6,6-tetramethylpiperidinyl is preferred, and more preferably 1,2,2,6,6-pentamethylpiperidinyl is preferred.

[0322] As a specific amine compound, polyalkylene imide is preferred for reasons that it can further improve the storage stability of the coloring composition. Polyalkylene imide is a polymer obtained by ring-opening polymerization of alkylene imide, and is a branched polymer containing primary, secondary, and tertiary amines respectively. The number of carbon atoms in the alkylene imide is preferably 2 to 6, more preferably 2 to 4, further preferably 2 or 3, and especially preferably 2. Specific examples of alkylene imide include ethyleneimide, propyleneimide, 1,2-buteneimide, 2,3-buteneimide, etc., preferably ethyleneimide or propyleneimide, more preferably ethyleneimide. Polyalkylene imide is particularly preferred to be polyethyleneimine. Furthermore, polyethyleneimine preferably contains at least 10 mol% of primary amines relative to the total of primary, secondary, and tertiary amines, more preferably at least 20 mol%, and even more preferably at least 30 mol%. Commercially available products of polyethyleneimine include Epomin SP-003, SP-006, SP-012, SP-018, SP-200, and P-1000 (all manufactured by NIPPON SHOKUBAI CO., LTD.).

[0323] The content of the specific amine compound in the total solids component 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.

[0324] Furthermore, the content of the specific amine compound is preferably 0.5 to 10 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 8 parts by mass or less, more preferably 7% by mass or less, and even more preferably 5 parts by mass or less.

[0325] <<Organic Solvents>>

[0326] The coloring composition preferably contains an organic solvent. Examples of organic solvents include ester solvents, ketone solvents, alcohol solvents, amide solvents, ether solvents, and hydrocarbon solvents. For details, please refer to paragraph 0223 of International Publication No. 2015 / 166779, which is incorporated herein by reference. Furthermore, ester solvents with substituted cyclic alkyl groups and ketone solvents with substituted cyclic alkyl groups are also preferably used. Specific examples of organic solvents include polyethylene glycol monomethyl ether, dichloromethane, 3-ethoxymethylpropionate, ethyl 3-ethoxypropionate, ethyl acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2-heptanone, 3-pentanone, 4-heptanone, cyclohexanone, 2-methylcyclohexanone, 3-methylcyclohexanone, 4-methylcyclohexanone, cycloheptanone, cyclooctanone, cyclohexyl acetate, cyclopentanone, and ethyl carbidone. Alcoholic acetates, butyl carbitol acetates, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, 3-methoxy-N,N-dimethylpropionamide, 3-butoxy-N,N-dimethylpropionamide, propylene glycol diacetate, 3-methoxybutanol, methyl ethyl ketone, γ-butyrolactone, sulfolane, anisole, 1,4-diacetoxybutane, diethylene glycol monoethyl ether acetate, diacetate butane-1,3-diyl, dipropylene glycol methyl ether acetate, diacetone alcohol, etc. Sometimes, for environmental reasons, it is preferable to reduce the amount of aromatic hydrocarbons (benzene, toluene, xylene, ethylbenzene, etc.) used as organic solvents (for example, relative to the total amount of organic solvents, it can be set to 50 ppm (parts per million), 10 ppm, or 1 ppm).

[0327] In this invention, organic solvents with low metal content are preferably used, and the metal content of the organic solvent is preferably, for example, below 10 ppb (parts per billion). If necessary, organic solvents at the ppt (parts per trillion) level can be used, such as those supplied by Toyo Gosei Co., Ltd. (Chemical Industry Daily, November 13, 2015).

[0328] Methods for removing impurities such as metals from organic solvents include, for example, distillation (molecular distillation, thin-film distillation, etc.) or filtration using a filter. The pore size of the filter used in 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.

[0329] Organic solvents can contain isomers (compounds with the same number of atoms but different structures). Furthermore, they can contain only one isomer or multiple isomers.

[0330] The peroxide content in the organic solvent is preferably less than 0.8 mmol / L, and more preferably substantially free of peroxides.

[0331] The content of organic solvent in the coloring composition is preferably 10-95% by mass, more preferably 20-90% by mass, and even more preferably 30-90% by mass.

[0332] <<Curing Accelerator>>

[0333] The coloring composition may contain a curing accelerator. Examples of curing accelerators include thiols, hydroxymethyl compounds, amine compounds, phosphonium salts, amidine salts, amide compounds, alkali-generating agents, isocyanate compounds, alkoxysilane compounds, and onium salts. Specific examples of curing accelerators include compounds described in paragraphs 0094-0097 of International Patent Publication No. 2018 / 056189, compounds described in paragraphs 0246-0253 of Japanese Patent Application Publication No. 2015-034963, compounds described in paragraphs 0186-0251 of Japanese Patent Application Publication No. 2013-041165, and compounds described in Japanese Patent Application Publication No. 2014-055114. The compounds include those described in paragraphs 0071 to 0080 of Japanese Patent Application Publication No. 2012-150180, those containing epoxy groups in alkoxysilane compounds as described in Japanese Patent Application Publication No. 2011-253054, those described in paragraphs 0085 to 0092 of Japanese Patent Application No. 5765059, and those containing carboxyl groups in epoxy curing agents as described in Japanese Patent Application Publication No. 2017-036379. When a curing accelerator is included, the content of the curing accelerator in the total solids component of the coloring composition is preferably 0.3 to 8.9% by mass, more preferably 0.8 to 6.4% by mass.

[0334] <<Ultraviolet Absorber>>

[0335] The coloring composition may contain a UV absorber. The UV absorber may be a conjugated diene compound, an amino diene compound, a salicylate compound, a benzophenone compound, a benzotriazole compound, an acrylonitrile compound, a hydroxyphenyl triazine compound, an indole compound, a triazine compound, etc. Details regarding these compounds can be found in paragraphs 0052-0072 of Japanese Patent Application Publication No. 2012-208374, paragraphs 0317-0334 of Japanese Patent Application Publication No. 2013-068814, and paragraphs 0061-0080 of Japanese Patent Application Publication No. 2016-162946, and these contents are incorporated herein by reference. Commercially available UV absorbers include UV-503 (manufactured by DAITO CHEMICAL CO., LTD). Furthermore, examples of benzotriazole compounds include the MYUA series manufactured by MIYOSHI OIL & FAT CO., LTD. (Chemical Industry Daily, February 1, 2016). Additionally, the ultraviolet absorber can also be the compounds described in paragraphs 0049 to 0059 of Japanese Patent No. 6268967. The content of the ultraviolet absorber in the total solids component of the coloring composition is preferably 0.01 to 10% by mass, more preferably 0.01 to 5% by mass. In the coloring composition, only one type of ultraviolet absorber may be used, or two or more types may be used. When two or more types are used, the total amount of these is preferably within the above-mentioned range.

[0336] <<Antioxidants>>

[0337] The coloring composition may contain an antioxidant. Examples of antioxidants include phenolic compounds, phosphite compounds, and thioether compounds. As a phenolic compound, any phenolic compound known as a phenolic antioxidant can be used. Hindered phenolic compounds are preferred. Compounds having a substituent at the site adjacent to the phenolic hydroxyl group (ortho position) are preferred. As the aforementioned substituent, substituted or unsubstituted alkyl groups having 1 to 22 carbon atoms are preferred. Furthermore, the antioxidant is also preferably a compound having both a phenolic group and a phosphite group within the same molecule. Furthermore, phosphorus-based antioxidants are also preferably used. Furthermore, compounds described in Korean Patent Publication No. 10-2019-0059371 can also be used as antioxidants. The antioxidant content in the total solids component of the coloring composition is preferably 0.01 to 20% by mass, more preferably 0.3 to 15% by mass. Only one type of antioxidant may be used, or two or more types may be used. When two or more types are used, the total amount is preferably within the above range.

[0338] <<Polymerization Inhibitor>>

[0339] The coloring composition may contain a polymerization inhibitor. Examples of polymerization inhibitors 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-tert-butylphenol), and N-nitrosophenylhydroxylamine salts (ammonium salts, cerium salts, etc.). Among these, p-methoxyphenol is preferred. When a polymerization inhibitor is contained, the content of the polymerization inhibitor in the total solids component of the coloring composition is preferably 0.0001 to 5% by mass. There may be only one type of polymerization inhibitor, or there may be two or more types. When there are two or more types, the total amount is preferably within the range described above.

[0340] <<Silane Coupling Agents>>

[0341] The coloring composition may contain a silane coupling agent. In this invention, a silane coupling agent refers to a silane compound having a hydrolyzable group and other functional groups. Furthermore, a hydrolyzable group refers to a substituent that directly bonds to a silicon atom and can form a siloxane bond through at least one of a hydrolysis reaction and a condensation reaction. Examples of hydrolyzable groups include halogen atoms, alkoxy groups, and acyloxy groups, with alkoxy groups being preferred. That is, the silane coupling agent is preferably a compound having an alkoxysilyl group. Furthermore, examples of functional groups other than the hydrolyzable group include vinyl, (meth)allyl, (meth)acryloyl, mercapto, epoxy, oxetyl, amino, urea, thioether, isocyanate, and phenyl groups, with amino, (meth)acryloyl, and epoxy groups being preferred. Specific examples of silane coupling agents include N-β-aminoethyl-γ-aminopropylmethyldimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBM-602), N-β-aminoethyl-γ-aminopropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBM-603), N-β-aminoethyl-γ-aminopropyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBE-602), γ-aminopropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBM-903), γ-aminopropyltriethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBE-903), and 3-methacryloyloxypropylmethyldimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBE-903). (Manufactured by Shin-Etsu Chemical Co., Ltd., product name KBM-502), 3-methacryloyloxypropyltrimethoxysilane (manufactured by Shin-Etsu Chemical Co., Ltd., product name KBM-503), etc. Furthermore, specific examples of silane coupling agents include the compounds described in paragraphs 0018 to 0036 of Japanese Patent Application Publication No. 2009-288703 and the compounds described in paragraphs 0056 to 0066 of Japanese Patent Application Publication No. 2009-242604, and these contents are incorporated herein by reference. When a silane coupling agent is contained, the content of the silane coupling agent in the total solids component of the coloring composition is preferably 0.01 to 15.0% by mass, more preferably 0.05 to 10.0% by mass. The silane coupling agent may be only one type or may be two or more types. When there are two or more types, the total amount is preferably within the above range.

[0342] <<Surfactants>>

[0343] The coloring composition may contain a surfactant. Various surfactants, such as fluorinated surfactants, nonionic surfactants, cationic surfactants, anionic surfactants, and silicone surfactants, can be used as surfactants. Regarding surfactants, examples can be found in paragraphs 0238 to 0245 of International Patent Publication No. 2015 / 166779, the contents of which are incorporated herein by reference.

[0344] In this invention, the surfactant is preferably a fluorinated surfactant. By including a fluorinated surfactant in the coloring composition, the liquid properties (especially flowability) are further improved, and the liquid-saving properties can be further enhanced. Furthermore, it is also possible to form a film with minimal thickness unevenness.

[0345] The fluorine content in the fluorinated surfactant is preferably 3-40% by mass, more preferably 5-30% by mass, and especially preferably 7-25% by mass.

[0346] Examples of fluorinated surfactants include those described in Japanese Patent Application Publication No. 2014-041318 (paragraphs 0060-0064 of the corresponding International Publication No. 2014 / 017669), Japanese Patent Application Publication No. 2011-132503 (paragraphs 0117-0132), and Japanese Patent Application Publication No. 2020-008634, and these contents are incorporated in this specification. Commercially available fluorinated surfactants include, for example, Megaface F-171, F-172, F-173, F-176, F-177, F-141, F-142, F-143, F-144, F-437, F-475, F-477, F-479, F-482, F-554, F-555-A, F-556, F-557, and F-55. 8. F-559, F-560, F-561, F-565, F-563, F-568, F-575, F-780, EXP, MFS-330, R-41, R-41 -LM, R-01, R-40, R-40-LM, R-43, RS-43, TF-1956, RS-90, R-94, RS-72-K, DS-21 (above, DIC (manufactured by CORPORATION), Fluorad FC430, FC431, FC171 (and above, manufactured by Sumitomo 3M Limited), SURFLON S-382, SC-101, SC-103, SC-104, SC-105, SC-1068, SC-381, SC-383, S-393, KH-40 (and above, manufactured by AGC Inc.), PolyFox PF636, PF656, PF6320, PF6520, PF7002 (and above, manufactured by OMNOVA Solutiohs Inc.), FTERGENT 208G, 215M, 245F, 601AD, 601ADH2, 602A, 610FM, 710FL, 710FM, 710FS, FTX-218 (and above, manufactured by NEOS COMPANY LIMITED), etc.

[0347] Furthermore, fluorinated surfactants can also preferably use acrylic compounds containing molecular structures with functional groups containing fluorine atoms. When heated, some of the functional groups containing fluorine atoms are broken, and the fluorine atoms volatilize. Examples of such fluorinated surfactants include the Megaface DS series manufactured by DIC CORPORATION (Chemical Industry Daily (February 22, 2016), Nikkei Industrial News (February 23, 2016)), such as Megaface DS-21.

[0348] Furthermore, regarding fluorinated surfactants, polymers of vinyl ether compounds containing fluorine atoms and having fluorinated alkyl or fluorinated alkylene ether groups, and hydrophilic vinyl ether compounds, are preferred. Such fluorinated surfactants can be found in Japanese Patent Application Publication No. 2016-216602, the contents of which are incorporated herein by reference.

[0349] Fluorinated surfactants can also utilize block polymers. For example, the compound described in Japanese Patent Application Publication No. 2011-089090 can be cited. Fluorinated surfactants can also preferably utilize fluorinated polymeric compounds comprising: repeating units derived from (meth)acrylate compounds having fluorine atoms; and repeating units derived from (meth)acrylate compounds having two or more (preferably five or more) alkeneoxy groups (preferably ethyleneoxy or propyleneoxy groups). Furthermore, the fluorinated surfactants described in paragraphs 0016 to 0037 of Japanese Patent Application Publication No. 2010-032698, and the following compounds, are also exemplified as fluorinated surfactants used in this invention.

[0350] [Chemical Formula 17]

[0351]

[0352] The weight-average molecular weight of the above compounds is preferably 3,000 to 50,000, for example, 14,000. In the above compounds, the percentage representing the proportion of repeating units is in molar percentage.

[0353] Furthermore, fluorinated surfactants can also be used on fluoropolymers with ethylene-unsaturated groups on their side chains. Specific examples include compounds described in paragraphs 0050-0090 and 0289-0295 of Japanese Patent Application Publication No. 2010-164965, such as Megaface RS-101, RS-102, RS-718K, and RS-72-K manufactured by DIC CORPORATION. Additionally, fluorinated surfactants can also be used with compounds described in paragraphs 0015-0158 of Japanese Patent Application Publication No. 2015-117327.

[0354] Furthermore, from an environmental regulation perspective, it is preferable to use the surfactant described in International Publication No. 2020 / 084854 as a substitute for surfactants with a perfluoroalkyl group having 6 or more carbon atoms.

[0355] Furthermore, it is also preferable to use the fluorinated imide salt compound represented by formula (fi-1) as a surfactant.

[0356] [Chemical Formula 18]

[0357]

[0358] In equation (fi-1), m represents 1 or 2, n represents an integer from 1 to 4, α represents 1 or 2, and X a+ Metal ions with an α valence, primary ammonium ions, secondary ammonium ions, tertiary ammonium ions, quaternary ammonium ions, or NH4+ ions + .

[0359] Examples of nonionic surfactants include glycerol, trimethylolpropane, trimethylolethane, and their ethoxylated and propoxylated derivatives (e.g., glycerol propoxylated, glycerol ethoxylated, etc.), polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oil-based ether, polyoxyethylene octylphenyl ether, polyoxyethylene nonylphenyl ether, polyethylene glycol dilaurate, polyethylene glycol distearate, dehydrated sorbitan fatty acid esters, PLURONIC L10, L31, L61, L62, 10R5, 17R2, 25R2 (manufactured by BASF), TETRONIC 304, 701, 704, 901, 904, 150R1 (manufactured by BASF), SOLSPERSE 20000 (manufactured by Japan Lubrizol Corporation), NCW-101, NCW-1001, NCW-1002 (FUJIFILM Wake Pure Chemical). (Manufactured by Corporation), Pionin D-6112, D-6112-W, D-6315 (manufactured by TAKEMOTO 0IL&FAT Co., Ltd.), OLFINEE1010, SURFYNOL 104, 400, 440 (manufactured by Nissin Chemical Industry Co., Ltd.), etc.

[0360] Examples of silicone-based surfactants include, for instance, Toray Silicone DC3PA, Toray Silicone SH7PA, Toray Silicone DC11PA, Toray Silicone SH21PA, Toray Silicone SH28PA, Toray Silicone SH29PA, Toray Silicone SH30PA, Toray Silicone SH8400 (and above, manufactured by Dow Corning Toray Co., Ltd.), TSF-4440, TSF-4300, TSF-4445, TSF-4460, TSF-4452 (and above, manufactured by Momentive Performance Materials Inc.), KP-341, KF-6001, and KF-6002 (and above, manufactured by Shin-Etsu Chemical). BYK-307, BYK-322, BYK-323, BYK-330, BYK-3760, BYK-UV3510 (and above, manufactured by BYK Chemie GmbH), FZ-2122 (manufactured by Dow Toray Co., Ltd.), etc.

[0361] Furthermore, compounds with the following structure can also be used in silicone-based surfactants.

[0362] [Chemical Formula 19]

[0363]

[0364] The content of surfactant in the total solids component of the coloring composition is preferably 0.001% to 5.0% by mass, more preferably 0.005% to 3.0% by mass. In the coloring composition, only one type of surfactant may be used, or two or more types may be used. When two or more types are used, the total amount of these surfactants is preferably within the range described above.

[0365] <<Other Ingredients>>

[0366] As needed, the coloring composition may also contain sensitizers, curing accelerators, thermosetting accelerators, plasticizers, and other additives (e.g., conductive particles, fillers, defoamers, flame retardants, leveling agents, peel accelerators, fragrances, surface tension modifiers, chain transfer agents, etc.). By appropriately containing these components, the physical properties of the film can be adjusted. Regarding these components, for example, reference can be made to paragraphs 0183 onwards in Japanese Patent Application Publication No. 2012-003225 (corresponding to paragraph 0237 of U.S. Patent Application Publication No. 2013 / 0034812), and paragraphs 0101-0104, 0107-0109 of Japanese Patent Application Publication No. 2008-250074, and these contents are incorporated herein by reference. Furthermore, the coloring composition may also contain potential antioxidants as needed. As potential antioxidants, examples include compounds in which the site where the antioxidant functions is protected by a protecting group, and which function as antioxidants by removing the protecting group through heating at 100–250°C or heating at 80–200°C in the presence of an acid / base catalyst. Examples of potential antioxidants include compounds described in International Publication No. 2014 / 021023, International Publication No. 2017 / 030005, and Japanese Patent Application Publication No. 2017-008219. Commercially available examples of potential antioxidants include ADEKA ARKLS GPA-5001 (manufactured by ADEKA CORPORATION).

[0367] The coloring composition may contain a lightfastness improver. Examples of lightfastness improvers include compounds described in paragraphs 0036-0037 of Japanese Patent Application Publication No. 2017-198787, compounds described in paragraphs 0029-0034 of Japanese Patent Application Publication No. 2017-146350, compounds described in paragraphs 0036-0037 and 0049-0052 of Japanese Patent Application Publication No. 2017-129774, and compounds described in paragraphs 20... The compounds described in paragraphs 0031-0034 and 0058-0059 of Japanese Patent Application Publication No. 17-129674, the compounds described in paragraphs 0036-0037 and 0051-0054 of Japanese Patent Application Publication No. 2017-122803, the compounds described in paragraphs 0025-0039 of International Publication No. 2017 / 164127, and the compounds described in Japanese Patent Application Publication No. 2017-186546 The compounds described in paragraphs 0034-0047 of the Japanese Patent Application Publication No. 2015-025116, the compounds described in paragraphs 0019-0041 of the Japanese Patent Application Publication No. 2012-145604, the compounds described in paragraphs 0101-0125 of the Japanese Patent Application Publication No. 2012-103475, the compounds described in paragraphs 0018-0021 of the Japanese Patent Application Publication No. 2011- The compounds described in paragraphs 0015 to 0018 of Japanese Patent Application Publication No. 257591, the compounds described in paragraphs 0017 to 0021 of Japanese Patent Application Publication No. 2011-191483, the compounds described in paragraphs 0108 to 0116 of Japanese Patent Application Publication No. 2011-145668, and the compounds described in paragraphs 0103 to 0153 of Japanese Patent Application Publication No. 2011-253174, etc.

[0368] The coloring composition preferably does not contain terephthalate. Herein, "substantially does not contain" means that the content of terephthalate in the total amount of the coloring composition is less than 1000 ppb by mass, more preferably less than 100 ppb by mass, and especially preferably zero.

[0369] From an environmental control perspective, the use of perfluoroalkyl sulfonic acids and their salts, as well as perfluoroalkyl carboxylic acids and their salts, is sometimes regulated. In coloring compositions, when reducing the content of the aforementioned compounds, the content of perfluoroalkyl sulfonic acids (especially perfluoroalkyl sulfonic acids with 6 to 8 carbon atoms in the perfluoroalkyl group) and their salts, and perfluoroalkyl carboxylic acids (especially perfluoroalkyl carboxylic acids with 6 to 8 carbon atoms in the perfluoroalkyl group) and their salts relative to the total solids content of the coloring composition 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. The coloring composition may substantially not contain perfluoroalkyl sulfonic acids and their salts, as well as perfluoroalkyl carboxylic acids and their salts. For example, by using compounds that can replace perfluoroalkyl sulfonic acids and their salts, and compounds that can replace perfluoroalkyl carboxylic acids and their salts, a coloring composition that substantially does not contain perfluoroalkyl sulfonic acids and their salts, as well as perfluoroalkyl carboxylic acids and their salts, can be selected. As alternatives to regulated compounds, examples include compounds that are removed from the regulated list due to differences in the number of carbon atoms in the perfluoroalkyl group. The foregoing does not preclude the use of perfluoroalkyl sulfonic acids and their salts, as well as perfluoroalkyl carboxylic acids and their salts. Coloring compositions may contain perfluoroalkyl sulfonic acids and their salts, as well as perfluoroalkyl carboxylic acids and their salts, within the maximum permissible range.

[0370] <Containment Container>

[0371] There are no particular limitations on the container used for the coloring composition, and known containers can be used. However, to prevent impurities from contaminating the raw materials or coloring composition, multi-layered bottles with an inner wall composed of six layers of six different resins, or bottles with a seven-layer structure of the six resins, are preferred. For example, the container described in Japanese Patent Application Publication No. 2015-123351 can be cited as such a container. Furthermore, to prevent metal from leaching from the inner wall of the container and to improve the storage stability of the coloring composition or inhibit component deterioration, the inner wall of the container is preferably made of glass or stainless steel.

[0372] <Preparation method of coloring composition>

[0373] The coloring composition can be prepared by mixing the aforementioned components. When preparing the coloring composition, all components can be simultaneously dissolved and / or dispersed in an organic solvent, or, as needed, the components can be appropriately prepared as two or more solutions or dispersions, and then mixed together before use (during coating) to prepare the coloring composition.

[0374] Furthermore, when preparing the coloring composition, it is preferable to include a process for dispersing the pigment. In the process of dispersing organic pigments, the mechanical forces used in the dispersion of organic pigments can include compression, pressing, impact, shearing, pitting, etc. Specific examples of these processes include bead milling, sand milling, roller milling, ball milling, paint stirring, microjet milling, high-speed impeller milling, sand mixing, jet mixing, high-pressure wet micronization, and ultrasonic dispersion. Furthermore, in the pulverization of organic pigments in sand milling (bead milling), it is preferable to perform the process under conditions that improve pulverization efficiency, such as using beads with small diameters and setting a large bead filling rate. Furthermore, it is preferable to remove coarse particles after pulverization by filtration, centrifugation, etc. Furthermore, the processes and dispersants used for dispersing organic pigments are preferably those described in "Complete Collection of Dispersion Technology, published by JOHOKIKO CO., LTD., July 15, 2005" and "Comprehensive Collection of Practical Data on Dispersion Technology and Industrial Applications Centered on Suspension (Solid / Liquid Dispersion System), published by the Business Development Center Publishing Department, October 10, 1978," and paragraph 0022 of Japanese Patent Application Publication No. 2015-157893. In addition, the particle refinement process can be performed in the process of dispersing organic pigments using a salt milling process. The raw materials, equipment, and processing conditions used in the salt milling process can be referenced, for example, in Japanese Patent Application Publication Nos. 2015-194521 and 2012-046629.

[0375] When preparing the coloring composition, it is preferable to filter the coloring composition with a filter in order to remove foreign matter or reduce defects. As for the filter, any filter that has been used for filtration purposes can be used without particular limitations. Examples include filters using raw materials such as fluoropolymers like polytetrafluoroethylene (PTFE) and polyvinylidene fluoride (PVDF), polyamide resins like nylon (e.g., nylon-6, nylon-6, 6), and polyolefin resins like polyethylene and polypropylene (PP) (including high-density and ultra-high molecular weight polyolefin resins). Among these raw materials, polypropylene (including high-density polypropylene) and nylon are preferred.

[0376] The pore size of the filter is preferably 0.01–7.0 μm, more preferably 0.01–3.0 μm, and even more preferably 0.05–0.5 μm. As long as the pore size of the filter is within the above range, fine foreign matter can be removed more reliably. The pore size value of the filter can be referenced from the filter manufacturer's specifications. Various filters supplied by NIHON PALL Corporation (DFA4201NXEY, DFA4201NAEY, DFA4201J006P, etc.), Advantec Toyo Kaisha, Ltd., Nihon Entegris KK (Formerly Nippon Mykrolis Corporation), and KITZ MICRO FILTER Corporation can be used.

[0377] Furthermore, fibrous filter media are preferred as filters. Examples of fibrous filter media include polypropylene fiber, nylon fiber, and glass fiber. Commercially available products include the SBP series (SBP008, etc.), TPR series (TPR002, TPR005, etc.), and SHPX series (SHPX003, etc.) manufactured by ROKITECHNO CO., LTD.

[0378] When using filters, different filters can be combined (e.g., filter 1 and filter 2, etc.). Filtration using each filter can be performed once or more. Furthermore, filters with different pore sizes can be combined within the aforementioned range. Also, filtration with filter 1 can be performed only on the dispersion, and after mixing other components, filtration can be performed with filter 2.

[0379] <Reagent Kit>

[0380] Next, the kit of the present invention will be described.

[0381] The kit of the present invention is a kit for manufacturing the above-mentioned color filter, the kit comprising:

[0382] The coloring composition for forming the first pixel contains a pigment comprising blue and yellow pigments, and a curing compound; and

[0383] The coloring composition used to form the second pixel contains a pigment including a green pigment and a curing compound.

[0384] The above-described coloring composition is preferably used as the coloring composition for forming the first pixel.

[0385] The coloring composition used to form the second pixel contains a pigment comprising a green pigment. Examples of green pigments that can be described as pigments included in the second pixel of the aforementioned color filter are also preferred.

[0386] The pigment used in the coloring composition for forming the second pixel preferably further comprises a yellow pigment. Examples of yellow pigments that can be described as pigments included in the second pixel of the aforementioned color filter are also preferred.

[0387] The pigments used in the coloring composition for forming the second pixel preferably include green, yellow, and blue pigments. Examples of blue pigments that can be described include those used in the first pixel. Regarding the blue pigment included in the second pixel, it is preferably selected from at least one of CI Pigment Blue 15:3, CI Pigment Blue 15:4, CI Pigment Blue 15:6, and CI Pigment Blue 16.

[0388] The content of green pigment in the pigment contained in the coloring composition used to form the second pixel is preferably 5 to 75% by mass, more preferably 10 to 50% by mass, and even more preferably 20 to 45% by mass.

[0389] Furthermore, when the pigment contained in the coloring composition used to form the second pixel contains a yellow pigment, the content of the yellow pigment in the pigment is preferably 5 to 75% by mass, more preferably 10 to 50% by mass, and even more preferably 20 to 40% by mass. Moreover, the content of the yellow pigment relative to 100 parts by mass of the green pigment is preferably 10 to 200 parts by mass, more preferably 25 to 160 parts by mass.

[0390] Furthermore, when the pigment contained in the coloring composition used to form the second pixel contains a blue pigment, the content of the blue pigment in the pigment is preferably 5 to 50% by mass, more preferably 10 to 45% by mass, and even more preferably 20 to 40% by mass. Also, the content of the blue pigment relative to 100 parts by mass of the green pigment is preferably 50 to 200 parts by mass, more preferably 80 to 130 parts by mass.

[0391] Furthermore, the total content of green, yellow, and blue pigments in the coloring composition used to form the second pixel is preferably 50-100% by mass, more preferably 55-100% by mass, and even more preferably 60-100% by mass. The pigments in the coloring composition used to form the second pixel are preferably only green and yellow pigments, or only green, yellow, and blue pigments, and from the viewpoint of spectral characteristics, it is particularly preferred that they are only green, yellow, and blue pigments.

[0392] The pigment content in the total solids component of the coloring composition used to form the second pixel is preferably 40% by mass or more, more preferably 50% by mass or more, and even more preferably 60% by mass or more. Furthermore, the green pigment content in the total solids component of the coloring composition used to form the second pixel is preferably 10 to 50% by mass, more preferably 15 to 45% by mass, and even more preferably 20 to 40% by mass. Furthermore, the yellow pigment content in the total solids component of the coloring composition used to form the second pixel is preferably 10 to 60% by mass, more preferably 20 to 55% by mass, and even more preferably 35 to 50% by mass. Furthermore, the blue pigment content in the total solids component of the coloring composition used to form the second pixel is preferably 5 to 40% by mass, more preferably 10 to 35% by mass, and even more preferably 15 to 30% by mass.

[0393] Examples of curable compounds used in the coloring composition for forming the second pixel include those included in the coloring composition, and the preferred range is also the same.

[0394] The coloring composition for forming the second pixel may further comprise, as described above as substances included in the coloring composition, a photopolymerization initiator, a pigment derivative, a specific amine compound, an organic solvent, a curing accelerator, an ultraviolet absorber, an antioxidant, a polymerization inhibitor, a silane coupling agent, a surfactant, and other components. The preferred methods and amounts of these are the same as those described in the section on the coloring composition.

[0395] Example

[0396] The present invention will be further described in detail below with examples. The materials, amounts, proportions, processing contents, and processing steps shown in the following examples can be appropriately modified without departing from the spirit of the invention. Therefore, the scope of the present invention is not limited to the specific examples shown below.

[0397] <Resin Evaluation>

[0398] (weight-average molecular weight (Mw))

[0399] The weight-average molecular weight (Mw) of the resin was calculated by determination using GPC (Gel Permeation Chromatography) under the following conditions.

[0400] Device: HLC-8220GPC (manufactured by TOSOH CORPORATION)

[0401] Detector: Differential refractometer (RI detector)

[0402] Pre-support: TSKGUARDCOLUMN MP(XL) 6mm×40mm (manufactured by TOSOH CORPORATION)

[0403] Sample side column: Directly bonded to the following 4 sections (all manufactured by TOSOH CORPORATION)

[0404] TSK-GEL Multipore-HXL-M 7.8mm×300mm

[0405] Reference side column: Same as the sample side column

[0406] Thermostatic bath temperature: 40℃

[0407] Mobile phase: Tetrahydrofuran

[0408] Sample-side mobile phase flow rate: 1.0 mL / min

[0409] Reference side mobile phase flow rate: 0.3 mL / min

[0410] Sample concentration: 0.1% by mass

[0411] Sample injection volume: 100 μL

[0412] Data acquisition time: 16–46 minutes after sample injection

[0413] Sampling interval: 300ms (milliseconds)

[0414] (Acid value)

[0415] The acid value of the resin was determined by neutralization titration using an aqueous sodium hydroxide solution. Specifically, a solution obtained by dissolving the resin in a solvent was titrated using a potentiometric method and an aqueous sodium hydroxide solution. The number of millimoles of acid contained in 1 g of the resin solid component was calculated, and then multiplied by the molecular weight of potassium hydroxide (KOH), 56.1, to obtain the acid value.

[0416] <Method for determining C=C valence (basic valence containing vinyl unsaturated bonds)>

[0417] The C=C valence of a resin (the basic valence containing ethylene unsaturated bonds) is calculated from the raw materials used in the synthesis of the resin.

[0418] <Preparation of Dispersions>

[0419] After mixing the raw materials listed in the table below, 230 parts by weight of zirconia beads with a diameter of 0.05 mm were added, and the mixture was dispersed for 5 hours using ULTRA APEX MILL manufactured by HIROSHIMA METAL & MACHINERY CO., LTD. The beads were then filtered and separated to produce a dispersion.

[0420] [Table 1]

[0421]

[0422] [Table 2]

[0423]

[0424] [Table 3]

[0425]

[0426] The raw materials listed in the table above using abbreviations are as follows.

[0427] [Blue pigment]

[0428] PB15:3:CI Pigment Blue 15:3 (Phthalocyanine Blue Pigment)

[0429] PB15:4:CI Pigment Blue 15:4 (Phthalocyanine Blue Pigment)

[0430] PB15:6:CI Pigment Blue 15:6 (Phthalocyanine Blue Pigment)

[0431] PB16: CI Pigment Blue 16 (Phthalocyanine Blue Pigment)

[0432] [Yellow pigment]

[0433] PY129: CI Pigment Yellow 129 (Azomethyl Yellow Pigment)

[0434] PY139: CI Pigment Yellow 139 (Isoidinoline Yellow Pigment)

[0435] PY150: CI Pigment Yellow 150 (Azo Yellow Pigment)

[0436] PY185: CI Pigment Yellow 185 (Isoidindoline Yellow Pigment)

[0437] [Green pigment]

[0438] PG7: CI Pigment Green 7 (Phthalocyanine Green Pigment)

[0439] PG36: CI Pigment Green 36 (Phthalocyanine Green Pigment)

[0440] PG58: CI Pigment Green 58 (Phthalocyanine Green Pigment)

[0441] PG59: CI Pigment Green 59 (Phthalocyanine Green Pigment)

[0442] PG62: CI Pigment Green 62 (Phthalocyanine Green Pigment)

[0443] PG63: CI Pigment Green 63 (Phthalocyanine Green Pigment)

[0444] [Red pigment]

[0445] PR254: CI Pigment Red 254

[0446] [Purple pigment]

[0447] PV23: CI Pigment Violet 23

[0448] [Resin]

[0449] B-1: Resins with the following structure (the values ​​listed on the main chain are molar ratios. Weight-average molecular weight 11000, acid value 32 mg KOH / g)

[0450] [Chemical Formula 20]

[0451]

[0452] B-3: Solsperse 36000 (manufactured by Lubrizol Corporation)

[0453] (Dispersant)

[0454] B-4: Resins with the following structure (the values ​​on the main chain are molar ratios, and the values ​​on the side chains are the number of repeating units. Weight-average molecular weight 18000, acid value 67 mgKOH / g)

[0455] [Chemical Formula 21]

[0456]

[0457] Resin B-5: A resin with the following structure (the values ​​on the main chain are molar ratios, and the values ​​on the side chains are the number of repeating units. Weight-average molecular weight 21000, acid value 36 mgKOH / g).

[0458] [Chemical Formula 22]

[0459]

[0460] B-6: Resins with the following structure (weight-average molecular weight 9000, acid value 43 mg KOH / g)

[0461] [Chemical Formula 23]

[0462]

[0463] [Pigment derivatives]

[0464] X-1: Compounds with the following structures

[0465] [Chemical Formula 24]

[0466]

[0467] X-2: Compounds with the following structure

[0468] [Chemical Formula 25]

[0469]

[0470] X-3: Compounds with the following structure

[0471] [Chemical Formula 26]

[0472]

[0473] S-1: Cyclohexanone

[0474] S-2: Propylene glycol monomethyl ether acetate (PGMFA)

[0475] <Preparation of the coloring composition>

[0476] A coloring composition was prepared by mixing the raw materials listed in the table below.

[0477] [Table 4]

[0478]

[0479] [Table 5]

[0480]

[0481] [Table 6]

[0482]

[0483] [Table 7]

[0484]

[0485] [Table 8]

[0486]

[0487] [Table 9]

[0488]

[0489] [Table 10]

[0490]

[0491] The raw materials listed in the table above using abbreviations are as follows.

[0492] [Dispersion]

[0493] Dispersions GA1 to GA15: The above dispersions GA1 to GA15

[0494] Dispersions Y1 to Y10: The above dispersions Y1 to Y10

[0495] Dispersions GB1 to GB14: The above-mentioned dispersions GB1 to GB14

[0496] Dispersion R1: The above dispersion R1

[0497] Dispersion B1: The above dispersion B1

[0498] [Resin]

[0499] B-1: Resin B-1 mentioned above

[0500] [Chemical Formula 27]

[0501]

[0502] B-2: Resins with the following structure (the values ​​listed on the main chain are molar ratios. Weight-average molecular weight 10000, acid value 77 mg KOH / g).

[0503] [Chemical Formula 28]

[0504]

[0505] [Polymerizing compounds]

[0506] M-1: NK Ester A-TMMT (manufactured by Shin-Nakamura Chemical Co., Ltd., pentaerythritol tetraacrylate)

[0507] M-2: KAYARAD DPHA (manufactured by Nippon Kayaku Co., Ltd., a mixture of dipentaerythritol hexaacrylate and dipentaerythritol pentaacrylate)

[0508] M-3: NK Ester A-DPH-12E (manufactured by Shin-Nakamura Chemical Co., Ltd., a polyfunctional acrylate containing ethylene oxide)

[0509] [Photopolymerization initiator]

[0510] Ini-1~Ini-5: Compounds with the following structures

[0511] [Chemical Formula 29]

[0512]

[0513] 〔additive〕

[0514] A-1: p-Methoxyphenol (polymerization inhibitor)

[0515] A-2: Compounds with the following structure (ultraviolet absorbers)

[0516] [Chemical Formula 30]

[0517]

[0518] [surfactants]

[0519] W-1: KF-6001 (manufactured by Shin-Etsu Chemical Co., Ltd., a methanol-modified silicone oil with two ends)

[0520] [Solvent]

[0521] S-2: Propylene glycol monomethyl ether acetate

[0522] <Evaluation of color separation characteristics>

[0523] In an oven, a glass wafer with a diameter of 8 inches (203.2 mm) was heated at 200°C for 30 minutes. Next, a primer resist solution (CT-4000, manufactured by FUJIFILM Electronic Materials Co., Ltd.) was applied to the glass wafer to achieve a dry film thickness of 0.1 μm. The wafer was then further dried in an oven at 220°C for 1 hour to form a base coating, resulting in a glass wafer with an attached base coating.

[0524] Next, the coloring composition for forming the first pixel, as described in the table below, was applied to the glass wafer using spin coating to achieve a film thickness of 0.6 μm. Then, a pre-baking process (heat treatment) was performed at 95°C for 120 seconds using a heated plate. Next, using an i-ray stepper exposure apparatus FPA-3000i5+ (manufactured by Canon Inc.), light with a wavelength of 365 nm was passed through a patterned mask at 500 mJ / cm². 2The exposure amount was determined. A mask with pixels capable of forming a 5μm×5μm island pattern was used, and an 11mm×11mm shot was exposed over the entire area of ​​the glass wafer except for the outer 3mm perimeter.

[0525] Next, the glass wafer with the irradiated coating was placed on the horizontal rotating stage of a spin / spray developer (DW-30 type, manufactured by Chemitronics Co., Ltd.), and subjected to 60 seconds of liquid-coated development at room temperature using alkaline developer (CD-2060, manufactured by FUJIFILME Electronic Materials Co., Ltd.). Then, the liquid-coated glass wafer was fixed to the horizontal rotating stage using a vacuum chuck, and while rotating at 50 rpm, it was rinsed by spraying pure water from above the center of rotation using a nozzle (23 seconds x 2 times). Following this, it underwent spin drying, and then was heated at 230°C for 300 seconds (post-baking) to form the first pixel.

[0526] Next, the second pixel was formed by using the coloring composition for forming the second pixel as described in the table below and patterning it using the same process.

[0527] Next, Red-1 was used as a coloring composition and patterned using the same process to form the third pixel, the red pixel. Then, Blue-1 was used as a coloring composition and patterned using the same process to form the fourth pixel, the blue pixel, thus creating the color filter.

[0528] Next, for the 24 colors of the color chart, the spectral reflectance of the illumination source was determined for the 400-700 nm range. Then, the infrared cutoff filter characteristics and spectral sensitivity of the sensor were defined, and the exposure amounts of red, green, and blue received by the spectral sensor as measured above were calculated from the spectral characteristics of each pixel of the color filter. Next, the charge amounts of each color (red, green, and blue) were calculated from these exposure amounts. Furthermore, the output signals r, g, and b of each color (red, green, and blue) were calculated from these charge amounts. For the 24 colors of the color chart used in the original calculation, L*a*b* was calculated, and L*a*b* was calculated from the output signals r, g, and b obtained above. The color difference (denoted as ΔE2000) with the original color chart was calculated as an indicator of color reproducibility. The detailed simulation was calculated in the same manner as paragraphs 0406-0429 of Japanese Patent Application Publication No. 2013-015817. Cases where problems exist in practical applications are designated as E. Cases where no problems exist in practical applications are designated as A (best performance), followed by B, C, and D. Furthermore, the smaller the value of ΔE2000, the better the color reproduction.

[0529] <Evaluation of lightfastness>

[0530] A color filter was manufactured using the same method as for color separation characteristics. The transmittance (400-700 nm) of the first and second pixels of the obtained color filter was measured using a microspectrometry apparatus, and their integral values ​​were set as G. INT-1 (A), G INT-1 (B)

[0531] Next, regarding the color filter, a lightfastness test was conducted using a Super Xenon Lamp Weathering Tester SX75 manufactured by Suga Test Instruments Co., Ltd., under conditions of 100,000 lux illuminance and 1,000 hours.

[0532] The transmittance (400-700nm) of the first and second pixels of the filter after the lightfastness test was measured using a microspectrometry apparatus, and the integral values ​​were set as G. INT-2 (A), G INT-2 (B)

[0533] Using transmittance G INT-1 (A), G INT-1 (B), G INT-12 (A), G INT-2 (B) The rate of change was calculated using the following formula to evaluate the lightfastness. When the following criteria are A to D, it is determined that there are no problems in practical applications.

[0534] Change rate (%) = |1-(G) INT-2 (A)+GINT-2 (B)) / (G INT-1 (A)+G INT-1 (B))|×100(%)

[0535] A: The rate of change is below 0.3%.

[0536] B: The rate of change is greater than 0.3% but less than 1.0%.

[0537] C: Rate of change exceeding 1.0% but below 2.0%

[0538] D: Change rate exceeding 2.0% but below 5.0%

[0539] E: The rate of change exceeds 5.0%

[0540] <Evaluation of the residue on the 1st pixel and the residue on the 2nd pixel>

[0541] The first pixel was formed using the same method as for color separation characteristics. The transmittance of the first pixel (400-700 nm) was measured using a microspectrometry apparatus, and its integral value was set as G. INT-11 (A)

[0542] Next, the second pixel was formed by patterning using the coloring composition for forming the second pixel as described in the table below, and by the same process. The transmittance (400-700 nm) of the second pixel was measured using a microspectrometry apparatus, and its integral value was measured using the same microspectrometry apparatus. This integral value was set as G. INT-11 (B)

[0543] Next, Red-1 was used as a coloring composition and patterned using the same process to form the third pixel, i.e., the red pixel. Then, Blue-1 was used as a coloring composition and patterned using the same process to form the fourth pixel, i.e., the blue pixel.

[0544] The transmittance (400-700 nm) of the first pixel after the formation of the fourth pixel was measured using a microspectrometry apparatus, and its integral value was set as G. INT-12 (A). Furthermore, the transmittance (400-700 nm) of the second pixel after the formation of the fourth pixel was measured using a microspectrometry apparatus, and its integral value was set as G. INT-12 (B)

[0545] Using transmittance G INT-11 (A), G INT-12 (A) and the following formulas are used to calculate the rate of change of residue on the first pixel, and the residue on the first pixel is evaluated. When the following criteria are A to D, it is judged that there is no problem in practical application.

[0546] Change rate (%) = 1 - G INT-12 (A) / G INT-11 (A)|×100(%)

[0547] A: The rate of change is below 0.3%.

[0548] B: The rate of change is greater than 0.3% but less than 1.0%.

[0549] C: Rate of change exceeding 1.0% but below 2.0%

[0550] D: Change rate exceeding 2.0% but below 5.0%

[0551] E: The rate of change exceeds 5.0%

[0552] Using transmittance G INT-11 (B), G INT-12 (B) and the following formula are used to calculate the rate of change of residue on the second pixel, and the residue on the second pixel is evaluated. When the following criteria are A to D, it is judged that there is no problem in practical application.

[0553] Change rate (%) = 1 - G INT-12 (B) / G INT-11 (B)|×100(%)

[0554] A: The rate of change is below 0.3%.

[0555] B: The rate of change is greater than 0.3% but less than 1.0%.

[0556] C: Rate of change exceeding 1.0% but below 2.0%

[0557] D: Rate of change exceeding 2.0% but below 5.0%

[0558] E: The rate of change exceeds 5.0%

[0559] <Evaluation of Moisture Resistance>

[0560] The color filter was manufactured using the same method as the color separation characteristics. The first and second pixels of the color filter were inspected using a wafer defect evaluation device (ComPLUS3, manufactured by AMAT Corporation), and the number of defects (initial defect number) was measured. Furthermore, pixels exhibiting foreign matter precipitation, defects, deformation, peeling, etc., were counted as defective pixels.

[0561] Next, using a constant temperature and humidity chamber (EHS-221M) manufactured by Amato Scientific Co., Ltd., the color filter was left to stand for 1500 hours in an environment with a temperature of 85°C and a relative humidity of 85% to conduct a humidity resistance test. After the humidity resistance test, the number of defects in the pixels was measured (the number of defects after the humidity resistance test).

[0562] The increase rate of the number of defects after the moisture resistance test relative to the initial number of defects was calculated, and the moisture resistance was evaluated using the following criteria. A rating of A to D indicates that there are no problems in practical applications.

[0563] Increase rate (%) = {(Number of defects after moisture resistance test - Initial number of defects) / Initial number of defects} × 100

[0564] A: The increase rate is less than 5%.

[0565] B: The growth rate is above 5% but less than 10%.

[0566] C: The increase rate is above 10% but less than 50%.

[0567] D: The increase rate is above 50% but less than 100%.

[0568] E: The increase rate is over 100%.

[0569] The coloring composition used to form the first pixel and the coloring composition used to form the second pixel in the examples and comparative examples are as follows.

[0570] [Table 11]

[0571] Coloring composition for forming the first pixel Coloring composition for forming the second pixel Example 1 Green-A1 Green-B1 Example 2 Green-A2 Green-B1 Example 3 Green-A3 Green-B1 Example 4 Green-A4 Green-B1 Example 5 Green-A5 Green-B1 Example 6 Green-A6 Green-B1 Example 7 Green-A7 Green-B1 Example 8 Green-A8 Green-B1 Example 9 Green-A9 Green-B1 Example 10 Green-A10 Green-B1 Example 11 Green-A11 Green-B1 Example 12 Green-A12 Green-B1 Example 13 Green-A13 Green-B1 Example 14 Green-A14 Green-B1 Example 15 Green-A15 Green-B1 Example 16 Green-A16 Green-B1 Example 17 Green-A17 Green-B1 Example 18 Green-A18 Green-B1 Example 19 Green-A19 Green-B1 Example 20 Green-A20 Green-B22 Example 21 Green-A21 Green-B23 Example 22 Green-A22 Green-B24 Example 23 Green-A23 Green-B25 Example 24 Green-A1 Green-B2 Example 25 Green-A1 Green-B3 Example 26 Green-A1 Green-B4 Example 27 Green-A1 Green-B5 Example 28 Green-A1 Green-B6 Example 29 Green-A1 Grewn-B7 Example 30 Green-A1 Green-B8 Example 31 Green-A1 Green-B9 Example 32 Green-A1 Green-B10 Example 33 Green-A1 Green-B11 Example 34 Green-A1 Green-B12 Example 35 Green-A1 Green-B13 Example 36 Green-A1 Green-B14 Example 37 Green-A1 Green-B15 Example 38 Green-A1 Green-B16 Example 39 Green-A1 Green-B17 Example 40 Green-A1 Green-B18 Example 41 Green-A1 Green-B19 Example 42 Green-A1 Green-B20 Example 43 Green-A1 Green-B21 Example 44 Green-A2 Green-B26 Comparative Example 1 Green-B4 Green-B4 Comparative Example 2 Green-B5 Green-B5 Comparative Example 3 Green-B6 Green-B6

[0572] The spectral characteristics of the first and second pixels of the color filters in Examples 1, 2, 4, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 24, 25, 26, 31, 33, 35, 36, 37, 38, 39, 40, 41, 42, 43, and 44 are recorded in the following table. Tmax in the following table... 1 λ represents the maximum transmittance of the first pixel within the wavelength range of 400–700 nm. 1 λ is the wavelength that represents the maximum transmittance of the first pixel. L11 To represent the wavelength of the long wavelength side with 50% transmittance of the first pixel, T(λ) L21 ) is the wavelength λ of the first pixel. L21 Transmittance at Tmax 2 λ represents the maximum transmittance of the second pixel within the wavelength range of 400–700 nm. 2 λ is the wavelength that represents the maximum transmittance of the second pixel. L21 To represent the wavelength of the long wavelength side with 50% transmittance of the second pixel, T(λ) L11 ) is the wavelength λ of the second pixel. L11 The transmittance below.

[0573] [Table 12]

[0574]

[0575] The following shows the performance evaluation of the color filters of the embodiments and comparative examples.

[0576] [Table 13]

[0577]

[0578] As shown in the table above, the embodiments exhibit excellent lightfastness. Furthermore, their color separation characteristics are also excellent.

[0579] In Example 1, even when the coloring composition used to form the first pixel was changed to Green-A24 to Green-A35, the same excellent lightfastness as in Example 1 was observed. Furthermore, the evaluation results regarding residue on the first pixel were the same as those in Example 1.

Claims

1. A color filter comprising: The first pixel contains pigments including blue and yellow pigments; and The second pixel is a green pixel containing pigment that contains green pigment. The transmission spectra of the first pixel and the second pixel in the wavelength range of 400nm to 700nm are as follows: Regarding the first pixel, there exists a wavelength λ in the wavelength range of 450nm to 600nm that exhibits the maximum transmittance. 1 The wavelength λ 1 The transmittance is over 70%. Regarding the second pixel, it is in the wavelength range of 450nm to 600nm and is greater than the wavelength λ. 1 There exists a wavelength λ that exhibits the maximum transmittance on the longer wavelength side. 2 The wavelength λ 2 The transmittance is over 70%. The first and second pixels have two wavelengths with 50% transmittance in the wavelength range of 400nm to 700nm.

2. The color filter according to claim 1, wherein, The blue pigment contained in the first pixel is phthalocyanine blue pigment.

3. The color filter according to claim 1, wherein, The blue pigment contained in the first pixel is selected from at least one of Pigment Blue 15:3, Pigment Blue 15:4, Pigment Blue 15:6 and Pigment Blue 16.

4. The color filter according to claim 1, wherein, The blue pigment contained in the first pixel is Pigment Blue 16 with a colorimetric index.

5. The color filter according to any one of claims 1 to 4, wherein, The yellow pigment contained in the first pixel is selected from at least one of colorimetric index pigment yellow 129, colorimetric index pigment yellow 139, colorimetric index pigment yellow 150 and colorimetric index pigment yellow 185.

6. The color filter according to any one of claims 1 to 4, wherein, The first pixel contains 70 to 130 parts by weight of the yellow pigment, relative to 100 parts by weight of the blue pigment.

7. The color filter according to any one of claims 1 to 4, wherein, In the first pixel, the total content of the blue pigment and the yellow pigment in the pigment is 75% to 100% by mass.

8. The color filter according to any one of claims 1 to 4, wherein, The green pigment contained in the second pixel is selected from at least one of colorimetric index pigment green 7, colorimetric index pigment green 36, colorimetric index pigment green 58, colorimetric index pigment green 59, colorimetric index pigment green 62 and colorimetric index pigment green 63.

9. The color filter according to any one of claims 1 to 4, wherein, The second pixel further contains yellow pigment.

10. The color filter according to any one of claims 1 to 4, wherein, The second pixel contains green pigment, yellow pigment, and blue pigment.

11. The color filter according to claim 9, wherein, The yellow pigment contained in the second pixel is selected from at least one of pigment yellow 129, pigment yellow 139, pigment yellow 150 and pigment yellow 185.

12. The color filter according to any one of claims 1 to 4, wherein, The pigment content in the first pixel is 40% by mass or more.

13. The color filter according to any one of claims 1 to 4, wherein, The pigment content in the second pixel is 40% by mass or more.

14. The color filter according to claim 1, wherein, The wavelength λ 2 With the wavelength λ 1 The difference is 5nm to 75nm.

15. The color filter according to any one of claims 1 to 4, wherein, Regarding the wavelength λ of the longer wavelength side where the second pixel exhibits 50% transmittance... L21 The wavelength λ exists on the longer wavelength side that exhibits 50% transmittance with respect to the first pixel. L11 It is closer to the longer wavelength side.

16. The color filter according to claim 15, wherein, The wavelength λ L21 With the wavelength λ L11 The difference is 5nm to 75nm.

17. The color filter according to claim 15, wherein, The wavelength λ L11 The transmittance of the second pixel is above 60%.

18. The color filter according to claim 15, wherein, The wavelength λ L21 The transmittance of the first pixel is less than 20%.

19. A solid-state imaging element having a color filter according to any one of claims 1 to 18.

20. A coloring composition for forming a first pixel of a color filter according to any one of claims 1 to 18, the coloring composition comprising: Pigments including blue and yellow pigments; and curing compounds. The blue pigment comprises Pigment Blue 16 with a colorimetric index of 16. The pigment content in the total solids component of the coloring composition is 40% by mass or more. The pigment contains at least 50% by mass of Pigment Blue 16, which has a colorimetric index.

21. A kit for manufacturing a color filter according to any one of claims 1 to 18, the kit comprising: A coloring composition for forming the first pixel, comprising a pigment including a blue pigment and a yellow pigment, and a curable compound; and The coloring composition used to form the second pixel contains a pigment including a green pigment and a curing compound.

22. The kit according to claim 21, wherein, The coloring composition used to form the second pixel comprises green pigment, yellow pigment, and blue pigment.

Images