WO2022045113A1 - 下層膜形成用組成物、カラーフィルタ、カラーフィルタの製造方法、固体撮像素子および画像表示装置 - Google Patents
下層膜形成用組成物、カラーフィルタ、カラーフィルタの製造方法、固体撮像素子および画像表示装置 Download PDFInfo
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- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0388—Macromolecular compounds which are rendered insoluble or differentially wettable with ethylenic or acetylenic bands in the side chains of the photopolymer
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/10—Circuitry of solid-state image sensors [SSIS]; Control thereof for transforming different wavelengths into image signals
- H04N25/11—Arrangement of colour filter arrays [CFA]; Filter mosaics
Definitions
- the present invention relates to a composition for forming an underlayer film of a color filter.
- the present invention also relates to a color filter, a method for manufacturing a color filter, a solid-state image sensor, and an image display device.
- CCD charge-coupled device
- a lower layer film is formed on the support, and then the pixels are formed on the lower layer film.
- Patent Document 1 describes a lower layer of a color filter containing 0 to 35% by mass of a cross-linking agent based on the content of solids in a homopolymer or copolymer having a specific structural unit, an acid compound, a solvent and a resin composition.
- the invention relating to the resin composition for film formation is described.
- the adhesion of pixels can be improved by forming a lower layer film on the support, but when the pixels of the color filter are formed on the lower layer film, the lower layer between pixels (non-pixel portion). Residues tended to be generated on the film. Even in the invention described in Patent Document 1, it cannot be said that the generation of the residue on the underlayer film can be sufficiently suppressed, and there is room for further improvement.
- an object of the present invention is to provide a composition for forming a lower layer film capable of forming a lower layer film in which generation of residues on the lower layer film is suppressed when pixels are formed on the lower layer film.
- the present invention also provides a color filter, a method for manufacturing a color filter, a solid-state image sensor, and an image display device.
- the present invention provides: ⁇ 1> A composition for forming an underlayer film of a color filter. Contains resin A and solvent B, The resin A contains a resin a-1 having an alkyleneoxy structure, and contains the resin a-1. The content of the resin a-1 in the total solid content of the underlayer film forming composition is 50% by mass or more. A composition for forming an underlayer film, wherein the solid content concentration of the composition for forming an underlayer film is 1% by mass or less.
- composition for forming a lower layer film according to ⁇ 1> wherein the content of the resin A in the total solid content of the composition for forming the lower layer film is 50% by mass or more.
- alkyleneoxy structure of the resin a-1 is a structure represented by the formula (AO-1); -(R 1 -O) n -... (AO-1)
- R 1 represents an alkylene group and n represents a number of 2 or more.
- ⁇ 4> The composition for forming an underlayer film according to any one of ⁇ 1> to ⁇ 3>, wherein the acid value of the resin a-1 is 40 mgKOH / g or less.
- ⁇ 5> The composition for forming an underlayer film according to any one of ⁇ 1> to ⁇ 4>, wherein the resin a-1 contains a polymerizable group.
- ⁇ 6> The underlayer film according to any one of ⁇ 1> to ⁇ 4>, wherein the resin a-1 contains a repeating unit having a group containing an alkyleneoxy structure and a repeating unit having a polymerizable group. Formation composition.
- the polymerizable compound contains a compound having an ethylenically unsaturated bond-containing group.
- the underlayer film forming composition according to ⁇ 9> or ⁇ 10>, wherein the underlayer film forming composition further contains a photopolymerization initiator.
- the underlayer film contains 50% by mass or more of the resin a-1 having an alkyleneoxy structure.
- the film thickness of the underlayer film is 30 nm or less.
- Color filter. ⁇ 13> A partition wall is formed on the surface of the support, and the partition wall is formed. The underlayer film is formed on the support and in the region partitioned by the partition wall. The color filter according to ⁇ 12>, wherein the pixels are formed on the underlayer film. ⁇ 14> A step of applying the composition for forming an underlayer film according to any one of ⁇ 1> to ⁇ 10> on a support to form an underlayer film, and a step of forming the underlayer film.
- the steps for forming the pixels include a step of applying the pixel-forming composition to form a pixel-forming composition layer, a step of exposing the pixel-forming composition layer in a pattern, and the pixel-forming composition.
- a method for manufacturing a color filter including a step of developing and removing an unexposed portion of a material layer. ⁇ 15> The method for manufacturing a color filter according to ⁇ 14>, wherein in the exposure step, the pixel-forming composition layer is exposed to light having a wavelength of 300 nm or less.
- ⁇ 16> The method for manufacturing a color filter according to ⁇ 14> or ⁇ 15>, wherein the step of forming the underlayer film and the step of forming the above pixels are alternately performed twice or more to form two or more kinds of pixels. .. ⁇ 17>
- the present invention it is possible to provide a composition for forming a lower layer film capable of forming a lower layer film in which the generation of residues on the lower layer film is suppressed when pixels are formed on the lower layer film.
- the present invention can also provide a color filter, a method for manufacturing a color filter, a solid-state image sensor, and an image display device.
- the notation not describing substitution and non-substitution includes a group having a substituent (atomic group) as well as a group having no substituent (atomic group).
- the "alkyl group” includes not only an alkyl group having no substituent (unsubstituted alkyl group) but also an alkyl group having a substituent (substituted alkyl group).
- the term "exposure” includes not only exposure using light but also drawing using particle beams such as electron beams and ion beams, unless otherwise specified.
- examples of the light used for exposure generally include the emission line spectrum of a mercury lamp, far ultraviolet rays typified by an excimer laser, extreme ultraviolet rays (EUV light), X-rays, active rays such as electron beams, or radiation.
- the numerical range represented by using "-" in the present specification means a range including the numerical values before and after "-" as the lower limit value and the upper limit value.
- the total solid content means the total mass of all the components of the composition excluding the solvent.
- “(meth) acrylate” represents both acrylate and methacrylate, or either
- “(meth) acrylic” represents both acrylic and methacrylic, or either.
- Allyl represents both allyl and / or methacrylic
- “ (meth) acryloyl ” represents both / or either acryloyl and methacrylic acid.
- Me in the structural formula represents a methyl group
- Et represents an ethyl group
- Bu represents a butyl group
- Ph represents a phenyl group.
- the term "process” is included in this term not only as an independent process but also as long as the intended action of the process is achieved even if it cannot be clearly distinguished from other processes. ..
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) are defined as polystyrene-equivalent values measured by gel permeation chromatography (GPC).
- the symbols (for example, A, B, etc.) added before or after the name are terms used to distinguish the components, and are the types of components, the number of components, and the like. And it does not limit the superiority or inferiority of the components.
- composition for forming an underlayer film of a color filter of the present invention is Contains resin A and solvent B,
- the resin A contains a resin a-1 having an alkyleneoxy structure, and contains the resin a-1.
- the content of the resin a-1 in the total solid content of the composition for forming the underlayer film is 50% by mass or more, and the content is 50% by mass or more.
- the composition for forming a lower layer film is characterized in that the solid content concentration is 1% by mass or less.
- the composition for forming the lower layer film of the present invention contains 50% by mass or more of the resin a-1 having an alkyleneoxy structure in the total solid content, it is possible to form a highly hydrophilic lower layer film. It is presumed that the high hydrophilicity of the underlayer film can weaken the interaction with the coloring material such as pigment on the surface of the underlayer film.
- a pixel-forming composition is applied to form a pixel-forming composition layer, then the pixel-forming composition layer is exposed in a pattern, and then the pixel-forming composition layer is unexposed.
- the pixel is formed by developing and removing the portion, the pixel-forming composition layer of the unexposed portion can be sufficiently developed and removed, and as a result, a residue is left in the non-pixel portion (between pixels) on the lower layer film. It is presumed that the occurrence could be suppressed.
- this composition for forming an underlayer film has a solid content concentration of 1% by mass or less, the underlayer film is formed on the surface of the support even if there is a step on the surface of the support or a partition wall is provided. Can be done.
- the solid content concentration of the composition for forming an underlayer film of the present invention is preferably 0.01 to 1% by mass.
- the lower limit is preferably 0.05% by mass or more, and more preferably 0.1% by mass or more.
- the upper limit is preferably 0.7% by mass or less, and more preferably 0.5% by mass or less.
- the composition for forming an underlayer film of the present invention contains a resin A (hereinafter referred to as a resin).
- the resin contained in the composition for forming an underlayer film of the present invention contains a resin a-1 having an alkyleneoxy structure (hereinafter, also referred to as a specific resin).
- the alkyleneoxy structure of the specific resin is preferably a structure represented by the formula (AO-1). -(R 1 -O) n -... (AO-1)
- R 1 represents an alkylene group and n represents a number of 2 or more.
- the carbon number of the alkylene group represented by R 1 of the formula (AO-1) is preferably 1 to 20, more preferably 1 to 10, further preferably 1 to 5, further preferably 2 to 5, and 2 or 3. It is particularly preferable to have it, and it is most preferable to have 2.
- the alkylene group represented by R 1 is preferably a linear or branched alkylene group, and more preferably a linear alkylene group.
- the alkylene group represented by R 1 is preferably an ethylene group, a propylene group or an isopropylene group, and more preferably an ethylene group.
- N in the formula (AO-1) represents an integer of 2 or more, and is preferably an integer of 3 or more and more preferably an integer of 4 or more because the generation of residues can be suppressed more effectively. It is more preferably an integer of 5 or more.
- the upper limit is preferably 200 or less, more preferably 100 or less, from the viewpoint of solvent solubility.
- the terminal structure of the alkyleneoxy structure of the specific resin is not particularly limited. It may be a hydrogen atom or a substituent.
- substituent include an alkyl group, a polymerizable group, an aryl group and the like.
- polymerizable group include an ethylenically unsaturated bond-containing group and a cyclic ether group.
- the ethylenically unsaturated bond-containing group include a vinyl group, a styrene group, a (meth) allyl group, and a (meth) acryloyl group.
- the cyclic ether group include an epoxy group and an oxetanyl group.
- the terminal structure of the alkyleneoxy structure is preferably an alkyl group from the viewpoint of resin production suitability and residue reduction.
- the specific resin is preferably a resin having a group represented by the formula (AO-2). -(R 1 -O) n -W 1 ... (AO-2)
- R 1 represents an alkylene group
- W 1 represents a hydrogen atom or a substituent
- n represents a number of 2 or more.
- R1 and n in the formula (AO-2) are synonymous with R1 and n in the formula (AO-1).
- W 1 of the formula (AO-2) is preferably a substituent. Examples of the substituent include the above-mentioned substituents.
- the specific resin is preferably a resin containing a polymerizable group. According to this aspect, the generation of residue can be suppressed more effectively.
- the polymerizable group may be contained in the terminal structure of the alkyleneoxy structure, or may be contained in other sites.
- the specific resin is preferably a resin containing a repeating unit having a group containing an alkyleneoxy structure.
- repeating unit having a group containing an alkyleneoxy structure examples include a repeating unit represented by the following formula (a-1-1).
- X 1 represents a trivalent linking group
- L 1 represents a single bond or a divalent linking group
- a 1 represents a group containing an alkyleneoxy structure.
- the trivalent linking group represented by X 1 in the formula (a-1-1) includes a poly (meth) acrylic linking group, a polyalkyleneimine-based linking group, a polyester-based linking group, a polyurethane-based linking group, and a polyurea-based linking group.
- a poly (meth) acrylic linking group a polyalkyleneimine-based linking group, a polyester-based linking group, a polyurethane-based linking group, and a polyurea-based linking group.
- Groups, polyamide-based linking groups, polyether-based linking groups, polystyrene-based linking groups and the like are mentioned, and poly (meth) acrylic-based linking groups, polyalkyleneimine-based linking groups and polyester-based linking groups are preferable, and poly (meth) acrylic is preferable.
- System linking groups are more preferred.
- the divalent linking group represented by L 1 in the formula (a-1-1) includes an alkylene group (preferably an alkylene group having 1 to 12 carbon atoms) and an arylene group (preferably an arylene group having 6 to 20 carbon atoms). , -NH-, -SO-, -SO 2- , -CO-, -O-, -COO-, -OCO-, -S- and groups consisting of a combination of two or more of these can be mentioned.
- the alkylene group is preferably a linear or branched alkylene group, more preferably a linear alkylene group.
- the alkylene group and the arylene group may have a substituent or may be unsubstituted. Examples of the substituent include a hydroxy group and an alkoxy group, and a hydroxy group is preferable from the viewpoint of production suitability.
- Examples of the group containing the alkyleneoxy structure represented by A 1 of the formula (a-1-1) include the group represented by the above-mentioned formula (AO-2).
- the content of the repeating unit having a group containing an alkyleneoxy structure in all the repeating units of the specific resin is preferably 30 to 100% by mass, more preferably 40 to 100% by mass, and 60 to 100% by mass. % Is more preferable.
- the specific resin is preferably a resin containing a repeating unit containing a group having an alkyleneoxy structure and a repeating unit having a polymerizable group. According to this aspect, the generation of residue can be suppressed more effectively.
- repeating unit having a polymerizable group examples include a repeating unit represented by the following formula (a-1-2).
- X 2 represents a trivalent linking group
- L 2 represents a single bond or a divalent linking group
- a 2 represents a polymerizable group.
- the trivalent linking group represented by X 2 in the formula (a-1-2) includes a poly (meth) acrylic linking group, a polyalkyleneimine-based linking group, a polyester-based linking group, a polyurethane-based linking group, and a polyurea-based linking group.
- a poly (meth) acrylic linking group a polyalkyleneimine-based linking group, a polyester-based linking group, a polyurethane-based linking group, and a polyurea-based linking group.
- Groups, polyamide-based linking groups, polyether-based linking groups, polystyrene-based linking groups and the like are mentioned, and poly (meth) acrylic-based linking groups, polyalkyleneimine-based linking groups and polyester-based linking groups are preferable, and poly (meth) acrylic is preferable.
- System linking groups are more preferred.
- an alkylene group preferably an alkylene group having 1 to 12 carbon atoms
- an arylene group preferably an arylene group having 6 to 20 carbon atoms.
- the alkylene group is preferably a linear or branched alkylene group, more preferably a linear alkylene group.
- the alkylene group and the arylene group may have a substituent or may be unsubstituted. Examples of the substituent include a hydroxy group and an alkoxy group, and a hydroxy group is preferable from the viewpoint of production suitability.
- Examples of the polymerizable group represented by A 2 of the formula (a-1-2) include an ethylenically unsaturated bond-containing group and a cyclic ether group, and an ethylenically unsaturated bond-containing group is preferable.
- Examples of the ethylenically unsaturated bond-containing group include a vinyl group, a styrene group, a (meth) allyl group, and a (meth) acryloyl group.
- Examples of the cyclic ether group include an epoxy group and an oxetanyl group.
- the content of the repeating unit having a polymerizable group in all the repeating units of the specific resin is preferably 1 to 100% by mass, more preferably 5 to 60% by mass, and 5 to 40% by mass. Is even more preferable. Further, the total content of the repeating unit containing a group having an alkyleneoxy structure and the repeating unit having a polymerizable group in all the repeating units of the specific resin is preferably 40 to 100% by mass, preferably 80 to 100. It is more preferably by mass%, and even more preferably 90 to 100% by mass.
- the ratio of the repeating unit containing a group having an alkyleneoxy structure to the repeating unit having a polymerizable group in the specific resin is such that the polymerizable group is based on 100 parts by mass of the repeating unit containing a group having an alkyleneoxy structure.
- the repeating unit to have is preferably 1 to 200 parts by mass, more preferably 2 to 100 parts by mass, and further preferably 5 to 50 parts by mass.
- the specific resin can further contain a repeating unit having an acid group.
- the acid group include a carboxyl group, a phosphoric acid group, a sulfo group, and a phenolic hydroxy group.
- the content of the repeating unit having an acid group in all the repeating units of the specific resin is preferably 20% by mass or less, more preferably 10% by mass or less, and further preferably 5% by mass or less. .. It is particularly preferable that the specific resin does not contain a repeating unit having an acid group because the generation of development residue can be further suppressed.
- the specific resin can further contain a repeating unit other than the above (also referred to as another repeating unit).
- the content of the other repeating units in all the repeating units of the specific resin is preferably 30% by mass or less, more preferably 20% by mass or less, and further preferably 10% by mass or less.
- the weight average molecular weight of the specific resin is preferably 3000 to 100,000.
- the upper limit is preferably 50,000 or less, more preferably 30,000 or less.
- the lower limit is preferably 5000 or more, more preferably 7000 or more.
- the acid value of the specific resin is preferably 40 mgKOH / g or less, more preferably 20 mgKOH / g or less, further preferably 5 mgKOH / g or less, and even more preferably 1 mgKOH / g or less. , 0 mgKOH / g is particularly preferable.
- the polymerizable base value of the specific resin is preferably 5 mmol / g or less, more preferably 3.0 mmol / g or less, and further preferably 1.5 mmol / g or less.
- the lower limit is preferably 0.05 mmol / g or more, and more preferably 0.1 mmol / g or more.
- the polymerizable base value of the specific resin is a numerical value representing the molar amount of the polymerizable group per 1 g of the solid content of the specific resin.
- the polymerizable base value of the specific resin is calculated from the following formula by extracting the low molecular weight component (a) of the polymerizable group site from the specific resin by alkaline treatment, measuring the content thereof by high performance liquid chromatography (HPLC). Can be done. If the polymerizable group site cannot be extracted from the specific resin by alkaline treatment, the value measured by the NMR method (nuclear magnetic resonance) is used.
- the specific resin is preferably a resin that does not contain fluorine atoms and silicon atoms. According to this aspect, the generation of residue can be suppressed more effectively.
- the halogen content of the specific resin is preferably less than 1.0% by mass, more preferably less than 0.5% by mass, and substantially no free halogen. Is particularly preferable.
- the composition for forming an underlayer film of the present invention may further contain a resin that does not contain an alkyleneoxy structure (hereinafter, also referred to as another resin).
- the other resins are not particularly limited, and are (meth) acrylic resin, en-thiol resin, polycarbonate resin, polyether resin, polyarylate resin, polysulfone resin, polyethersulfone resin, polyphenylene resin, polyarylene ether phosphine oxide resin. , Polygonide resin, polyamideimide resin, polyolefin resin, cyclic olefin resin, polyester resin, styrene resin and the like.
- the weight average molecular weight of other resins is preferably 3000 to 100,000.
- the upper limit is preferably 50,000 or less, more preferably 30,000 or less.
- the lower limit is preferably 5000 or more, more preferably 7000 or more.
- the acid value of the other resin is preferably 40 mgKOH / g or less, more preferably 20 mgKOH / g or less, further preferably 5 mgKOH / g or less, and even more preferably 1 mgKOH / g or less. It is preferably 0 mgKOH / g, and particularly preferably 0 mgKOH / g.
- the other resin is a resin having a polymerizable group.
- the polymerizable group include an ethylenically unsaturated bond-containing group and a cyclic ether group, and an ethylenically unsaturated bond-containing group is preferable.
- the content of the specific resin in the total solid content of the underlayer film forming composition is 50% by mass or more, preferably 70% by mass or more, and more preferably 90% by mass or more.
- the upper limit may be 100% by mass or less.
- the content of the specific resin is preferably 0.005 to 1% by mass with respect to the total mass of the composition for forming the underlayer film.
- the lower limit is preferably 0.025% by mass or more, and more preferably 0.05% by mass or more.
- the upper limit is preferably 0.7% by mass or less, and more preferably 0.5% by mass or less.
- the content of the specific resin in the resin is preferably 50 to 100% by mass, more preferably 70 to 100% by mass, further preferably 90 to 100% by mass, and 95% by mass or more. Is particularly preferable.
- the content of the resin in the total solid content of the composition for forming the underlayer film is preferably 50% by mass or more, more preferably 70% by mass or more, and further preferably 90% by mass or more. preferable.
- the upper limit may be 100% by mass or less.
- the resin content is preferably 0.005 to 1% by mass with respect to the total mass of the underlayer film forming composition.
- the lower limit is preferably 0.025% by mass or more, and more preferably 0.05% by mass or more.
- the upper limit is preferably 0.7% by mass or less, and more preferably 0.5% by mass or less. Only one type of resin may be used, or two or more types may be used in combination. When two or more types are used in combination, the total amount thereof shall be within the above range.
- the composition for forming a lower layer film of the present invention contains a solvent B (hereinafter referred to as a solvent).
- the solvent is preferably an organic solvent.
- the solvent is not particularly limited as long as it satisfies the solubility of each component and the coatability of the composition for forming an underlayer film.
- the organic solvent include ester-based solvents, ketone-based solvents, alcohol-based solvents, amide-based solvents, ether-based solvents, hydrocarbon-based solvents and the like.
- paragraph No. 0223 of International Publication No. 2015/166779 can be referred to, the contents of which are incorporated herein.
- an ester solvent substituted with a cyclic alkyl group and a ketone solvent substituted with a cyclic alkyl group can also be preferably used.
- the boiling point of the organic solvent is preferably 100 to 200 ° C, more preferably 105 to 190 ° C, and even more preferably 110 to 180 ° C.
- organic solvent examples include polyethylene glycol monomethyl ether, dichloromethane, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, ethyl lactate, diethylene glycol dimethyl ether, butyl acetate, methyl 3-methoxypropionate, 2 -Heptanone, 3-pentanone, 4-heptanone, cyclohexanone, 2-methylcyclohexanone, 3-methylcyclohexanone, 4-methylcyclohexanone, cycloheptanone, cyclooctanone, cyclohexyl acetate, cyclopentanone, ethylcarbitol acetate, butylcarbi Tall acetate, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, 3-methoxy-N, N-dimethylpropanamide, 3-butoxy-N, N-di
- aromatic hydrocarbons (benzene, toluene, xylene, ethylbenzene, etc.) as organic solvents may need to be reduced for environmental reasons (for example, 50 parts by mass (parts) with respect to the total amount of organic solvent. Per million) or less, 10 mass ppm or less, or 1 mass ppm or less).
- an organic solvent having a low metal content it is preferable to use an organic solvent having a low metal content, and the metal content of the organic solvent is preferably, for example, 10 mass ppb (parts per parts) or less. If necessary, an organic solvent at the mass ppt (parts per trillion) level may be used, and such an organic solvent is provided by, for example, Toyo Synthetic Co., Ltd. (The Chemical Daily, November 13, 2015). ..
- Examples of the method for removing impurities such as metals from the organic solvent include distillation (molecular distillation, thin film distillation, etc.) and filtration using a filter.
- the filter pore diameter of the filter used for filtration is preferably 10 ⁇ m or less, more preferably 5 ⁇ m or less, and even more preferably 3 ⁇ m or less.
- the filter material is preferably polytetrafluoroethylene, polyethylene or nylon.
- the organic solvent may contain isomers (compounds having the same number of atoms but different structures). Further, only one kind of isomer may be contained, or a plurality of kinds may be contained.
- the content of peroxide in the organic solvent is preferably 0.8 mmol / L or less, and more preferably substantially free of peroxide.
- the content of the solvent is an amount such that the solid content concentration of the composition for forming the underlayer film is 1% by mass or less. That is, the content of the solvent is 99% by mass or more with respect to the total mass of the composition for forming the underlayer film.
- the content of the solvent is preferably 99 to 99.99% by mass with respect to the total mass of the composition for forming the underlayer film.
- the lower limit is preferably 99.3% by mass or more, and more preferably 99.5% by mass or more.
- the upper limit is preferably 99.95% by mass or less, more preferably 99.9% by mass or less.
- the composition for forming a lower layer film can contain a surfactant.
- a surfactant various surfactants such as a fluorine-based surfactant, a nonionic surfactant, a cationic surfactant, an anionic surfactant, and a silicone-based surfactant can be used.
- the surfactant described in paragraph Nos. 0238 to 0245 of International Publication No. 2015/166779 is mentioned, and the content thereof is incorporated in the present specification.
- the surfactant is preferably a fluorine-based surfactant or a silicone-based surfactant.
- fluorine-based surfactant examples include the surfactants described in paragraphs 0060 to 0064 of Japanese Patent Laid-Open No. 2014-041318 (paragraphs 0060 to 0064 of International Publication No. 2014/017669) and the like, Japanese Patent Application Laid-Open No. 2011-.
- the surfactants described in paragraphs 0117 to 0132 of Japanese Patent Application Laid-Open No. 132503 and the surfactants described in JP-A-2020-008634 are mentioned, and the contents thereof are incorporated in the present specification.
- fluorine-based surfactants include, for example, Megafax 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, F-558, F-559, F-560.
- the fluorine-based surfactant has a molecular structure having a functional group containing a fluorine atom, and an acrylic compound in which a portion of the functional group containing a fluorine atom is cut off and the fluorine atom volatilizes when heat is applied.
- a fluorine-based surfactant include the Megafuck DS series manufactured by DIC Corporation (The Chemical Daily (February 22, 2016), Nikkei Sangyo Shimbun (February 23, 2016)), for example, Megafuck. DS-21 can be mentioned.
- fluorine-based surfactant it is also preferable to use a polymer of a fluorine atom-containing vinyl ether compound having a fluorinated alkyl group or a fluorinated alkylene ether group and a hydrophilic vinyl ether compound.
- a fluorine-based surfactant include the fluorine-based surfactants described in JP-A-2016-216602, the contents of which are incorporated in the present specification.
- the fluorine-based surfactant a block polymer can also be used.
- the fluorine-based surfactant has a repeating unit derived from a (meth) acrylate compound having a fluorine atom and 2 or more (preferably 5 or more) alkyleneoxy groups (preferably ethyleneoxy groups and propyleneoxy groups) (meth).
- a fluorine-containing polymer compound containing a repeating unit derived from an acrylate compound can also be preferably used.
- the fluorine-containing surfactants described in paragraphs 0016 to 0037 of JP-A-2010-032698 and the following compounds are also exemplified as the fluorine-based surfactants used in the present invention.
- the weight average molecular weight of the above compounds is preferably 3000 to 50,000, for example 14000.
- % indicating the ratio of the repeating unit is mol%.
- a fluorine-based surfactant a fluorine-containing polymer having an ethylenically unsaturated bond-containing group in the side chain can also be used. Specific examples thereof include the compounds described in paragraphs 0050 to 0090 and 0289 to 0295 of JP2010-164965, Megafuck RS-101, RS-102, RS-718K, manufactured by DIC Corporation. RS-72-K and the like can be mentioned. Further, as the fluorine-based surfactant, the compounds described in paragraphs 0015 to 0158 of JP-A-2015-117327 can also be used.
- a fluorine-containing imide salt compound represented by the formula (fi-1) is also preferable to use as a surfactant.
- m represents 1 or 2
- n represents an integer of 1 to 4
- ⁇ represents 1 or 2
- X ⁇ + represents an ⁇ -valent metal ion, a primary ammonium ion, and a first.
- silicone-based surfactant examples include Torre Silicone DC3PA, Torre Silicone SH7PA, Torre Silicone DC11PA, Torre Silicone SH21PA, Torre Silicone SH28PA, Torre Silicone SH29PA, Torre Silicone SH30PA, Torre Silicone SH8400, and FZ-2122.
- TSF-4440, TSF-4300, TSF-4445, TSF-4460, TSF-4452 all manufactured by Momentive Performance Materials
- KP-341, KF-6001, KF- Examples thereof include 6002 (above, manufactured by Shin-Etsu Chemical Industry Co., Ltd.), BYK-307, BYK-322, BYK-323, BYK-330, BYK-3760, BYK-UV3510 (above, manufactured by Big Chemie) and the like.
- Nonionic surfactants include glycerol, trimethylolpropane, trimethylolethane and their ethoxylates and propoxylates (eg, glycerol propoxylate, glycerol ethoxylate, etc.), polyoxyethylene lauryl ethers, polyoxyethylene stearyl ethers, etc.
- the content of the surfactant in the total solid content of the underlayer film forming composition is preferably 0.01 to 2.0% by mass.
- the lower limit is preferably 0.03% by mass or more, more preferably 0.05% by mass or more.
- the upper limit is preferably 1.5% by mass or less, more preferably 1.0% by mass or less.
- the content of the surfactant is preferably 0.0001 to 0.1% by mass with respect to the total mass of the composition for forming the underlayer film.
- the lower limit is preferably 0.0005% by mass or more, more preferably 0.001% by mass or more.
- the upper limit is preferably 0.05% by mass or less, more preferably 0.01% by mass or less. Only one type of surfactant may be used, or two or more types may be used in combination. When two or more types are used in combination, the total amount thereof shall be within the above range.
- the composition for forming a lower layer film may further contain a polymerizable compound in addition to the above-mentioned resin.
- the polymerizable compound include a compound having an ethylenically unsaturated bond-containing group, a compound having a cyclic ether group, and the like, and a compound having an ethylenically unsaturated bond-containing group is preferable.
- the ethylenically unsaturated bond-containing group include a vinyl group, a (meth) allyl group, and a (meth) acryloyl group.
- the cyclic ether group include an epoxy group and an oxetanyl group.
- a compound having an ethylenically unsaturated bond-containing group can be preferably used as a radically polymerizable compound.
- the molecular weight of the monomer-type polymerizable compound is preferably less than 2000, more preferably 1500 or less.
- the lower limit of the molecular weight of the polymerizable monomer is preferably 100 or more, and more preferably 200 or more.
- the weight average molecular weight (Mw) of the resin-type polymerizable compound is preferably 2000 to 2000000.
- the upper limit of the weight average molecular weight is preferably 1,000,000 or less, and more preferably 500,000 or less.
- the lower limit of the weight average molecular weight is preferably 3000 or more, and more preferably 5000 or more.
- the compound having an ethylenically unsaturated bond-containing group as a polymerizable monomer is preferably a 3- to 15-functional (meth) acrylate compound, and more preferably a 3- to 6-functional (meth) acrylate compound. Specific examples thereof include paragraph numbers 0995 to 0108 of JP2009-288705, paragraphs 0227 of JP2013-029760, paragraphs 0254 to 0257 of JP2008-292970, and paragraphs 0254 to 0257 of JP2013-253224.
- Compounds having an ethylenically unsaturated bond-containing group include dipentaerythritol triacrylate (commercially available KAYARAD D-330; manufactured by Nippon Kayaku Co., Ltd.) and dipentaerythritol tetraacrylate (commercially available KAYARAD D-).
- Examples thereof include compounds having a structure bonded via the above (for example, SR454, SR499 commercially available from Sartmer).
- Compounds having an ethylenically unsaturated bond-containing group include diglycerin EO (ethylene oxide) modified (meth) acrylate (commercially available M-460; manufactured by Toa Synthetic) and pentaerythritol tetraacrylate (Shin-Nakamura Chemical Industry Co., Ltd. (Shin-Nakamura Chemical Industry Co., Ltd.).
- NK Ester A-TMMT (manufactured by Nippon Kayaku Co., Ltd.), 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 Nippon Kayaku Co., Ltd.)
- NK Oligo UA-7200 Shin-Nakamura Chemical Industry Co., Ltd.
- 8UH-1006, 8UH-1012 Taisei Fine Chemical Co., Ltd.
- Light Acrylate POB-A0 (Kyoeisha Chemical Co., Ltd.)
- Etc. can also be used.
- Examples of the compound having an ethylenically unsaturated bond-containing group include trimethylolpropane tri (meth) acrylate, trimethylolpropane propylene oxide-modified tri (meth) acrylate, trimethylolpropane ethylene oxide-modified tri (meth) acrylate, and isocyanuric acid ethylene oxide. It is also preferable to use a trifunctional (meth) acrylate compound such as a modified tri (meth) acrylate or pentaerythritol tri (meth) acrylate.
- trifunctional (meth) acrylate compounds include Aronix M-309, M-310, M-321, M-350, M-360, M-313, M-315, M-306, and M-305. , M-303, M-452, M-450 (manufactured by Toa Synthetic Co., Ltd.), NK ester A9300, A-GLY-9E, A-GLY-20E, A-TMM-3, A-TMM-3L, A -TMM-3LM-N, A-TMPT, TMPT (manufactured by Shin Nakamura Chemical Industry Co., Ltd.), KAYARAD GPO-303, TMPTA, THE-330, TPA-330, PET-30 (manufactured by Nippon Kayaku Co., Ltd.) And so on.
- the compound having an ethylenically unsaturated bond-containing group may further have an acid group such as a carboxyl group, a sulfo group, and a phosphoric acid group.
- an acid group such as a carboxyl group, a sulfo group, and a phosphoric acid group.
- Examples of commercially available products of such compounds include Aronix M-305, M-510, M-520, Aronix TO-2349 (manufactured by Toagosei Co., Ltd.) and the like.
- a compound having a caprolactone structure can also be used.
- the description in paragraphs 0042 to 0045 of JP2013-253224A can be referred to, and the content thereof is incorporated in the present specification.
- Examples of the compound having a caprolactone structure include DPCA-20, DPCA-30, DPCA-60, DPCA-120, etc., which are commercially available from Nippon Kayaku Co., Ltd. as the KAYARAD DPCA series.
- a compound having an ethylenically unsaturated bond-containing group and an alkyleneoxy group can also be used.
- Such a compound is preferably a compound having an ethylenically unsaturated bond-containing group and an ethyleneoxy group and / or a propyleneoxy group, and is a compound having an ethylenically unsaturated bond-containing group and an ethyleneoxy group. It is more preferable to have a 3 to 6 functional (meth) acrylate compound having 4 to 20 ethyleneoxy groups.
- SR-494 which is a tetrafunctional (meth) acrylate having four ethyleneoxy groups manufactured by Sartmer
- KAYARAD TPA-330 which is a trifunctional (meth) acrylate having three isobutyleneoxy groups.
- a polymerizable compound having a fluorene skeleton can also be used.
- examples of commercially available products include Ogsol EA-0200 and EA-0300 (manufactured by Osaka Gas Chemical Co., Ltd., (meth) acrylate monomer having a fluorene skeleton).
- the compound having an ethylenically unsaturated bond-containing group it is also preferable to use a compound that does not substantially contain an environmentally regulatory substance such as toluene.
- an environmentally regulatory substance such as toluene.
- commercially available products of such compounds include KAYARAD DPHA LT and KAYARAD DPEA-12 LT (manufactured by Nippon Kayaku Co., Ltd.).
- Compounds having an ethylenically unsaturated bond-containing group are UA-7200 (manufactured by Shin Nakamura Chemical Industry Co., Ltd.), DPHA-40H (manufactured by Nippon Kayaku Co., Ltd.), UA-306H, UA-306T, UA-306I.
- Examples of the compound having a cyclic ether group include a compound having an epoxy group, a compound having an oxetanyl group, and the like, and a compound having an epoxy group is preferable.
- Examples of the compound having an epoxy group include a compound having 1 to 100 epoxy groups in one molecule.
- the upper limit of the number of epoxy groups may be, for example, 10 or less, or 5 or less.
- the lower limit of the number of epoxy groups is preferably two or more.
- Examples of the compound having an epoxy group include paragraph numbers 0034 to 0036 of JP2013-011869, paragraph numbers 0147 to 0156 of JP2014-043556, and paragraph numbers 0083 to 0092 of JP2014-089408.
- the described compounds and the compounds described in JP-A-2017-179172 can also be used, and their contents are incorporated in the present specification.
- the compound having an epoxy group may be a low molecular weight compound (for example, a molecular weight of less than 1000) or a polymer compound (for example, a molecular weight of 1000 or more, and in the case of a polymer, a weight average molecular weight of 1000 or more).
- the weight average molecular weight of the compound having an epoxy group is preferably 200 to 100,000, more preferably 500 to 50,000.
- the upper limit of the weight average molecular weight is preferably 10,000 or less, more preferably 5000 or less, and even more preferably 3000 or less.
- EHPE3150 manufactured by Dicel Co., Ltd.
- JER-1031S manufactured by Mitsubishi Chemical Corporation
- EPICLON N-695 manufactured by DIC Corporation
- the content of the polymerizable compound in the total solid content of the composition for forming a lower layer film is preferably 1 to 45% by mass.
- the lower limit is preferably 3% by mass or more, more preferably 5% by mass or more.
- the upper limit is preferably 35% by mass or less, more preferably 25% by mass or less.
- the content of the polymerizable compound is preferably 0.003 to 0.5% by mass with respect to the total mass of the composition for forming the underlayer film.
- the lower limit is preferably 0.01% by mass or more, and more preferably 0.03% by mass or more.
- the upper limit is preferably 0.4% by mass or less, and more preferably 0.3% by mass or less.
- the total content of the resin and the polymerizable compound in the total solid content of the composition for forming the underlayer film is preferably 70 to 100% by mass.
- the lower limit is preferably 80% by mass or more, and more preferably 90% by mass or more.
- the upper limit may be 100% by mass or less, or 95% by mass or less.
- the content of the resin and the polymerizable compound is preferably 0.007 to 1% by mass with respect to the total mass of the composition for forming the underlayer film.
- the lower limit is preferably 0.035% by mass or more, and more preferably 0.07% by mass or more.
- the upper limit is preferably 0.7% by mass or less, and more preferably 0.5% by mass or less.
- the polymerizable compound only one kind may be used, or two or more kinds may be used in combination. When two or more types are used in combination, the total amount thereof shall be within the above range.
- the composition for forming a lower layer film can contain a photopolymerization initiator.
- the photopolymerization initiator is not particularly limited and may be appropriately selected from known photopolymerization initiators. For example, a compound having photosensitivity to light rays in the ultraviolet region to the visible region is preferable.
- the photopolymerization initiator is preferably a photoradical polymerization initiator.
- photopolymerization initiator examples include halogenated hydrocarbon derivatives (for example, compounds having a triazine skeleton, compounds having an oxadiazole skeleton, etc.), acylphosphine compounds, hexaarylbiimidazoles, oxime compounds, organic peroxides, and thio compounds. , Ketone compounds, aromatic onium salts, ⁇ -hydroxyketone compounds, ⁇ -aminoketone compounds and the like.
- the photopolymerization initiator is a trihalomethyltriazine compound, a benzyldimethylketal compound, an ⁇ -hydroxyketone compound, an ⁇ -aminoketone compound, an acylphosphine compound, a phosphine oxide compound, a metallocene compound, an oxime compound, or a triarylimidazole.
- It is preferably a dimer, an onium compound, a benzothiazole compound, a benzophenone compound, an acetophenone compound, a cyclopentadiene-benzene-iron complex, a halomethyloxadiazole compound and a 3-aryl substituted coumarin compound, preferably an oxime compound and an ⁇ -hydroxyketone compound.
- ⁇ -Aminoketone compound, and a compound selected from an acylphosphine compound are more preferable, and an oxime compound is further preferable.
- the photopolymerization initiator the compound described in paragraphs 0065 to 0111 of JP-A-2014-130173 and JP-A-6301489, MATERIAL STAGE 37-60p, vol. 19, No. Peroxide-based photopolymerization initiator described in 3, 2019, photopolymerization initiator described in International Publication No. 2018/221177, photopolymerization initiator described in International Publication No. 2018/110179, JP-A-2019-043864.
- Examples thereof include the above-mentioned aminoacetophenone-based initiators having an oxazolidine group, the oxime-based photopolymerization initiators described in JP-A-2013-190459, and the contents thereof are incorporated in the present specification.
- ⁇ -hydroxyketone compounds include Omnirad 184, Omnirad 1173, Omnirad 2959, Omnirad 127 (above, IGM Resins B.V.), Irgacure 184, Irgacure 1173, Irgacure27, Irgacure29. (Manufactured by the company) and the like.
- Commercially available ⁇ -aminoketone compounds include Omnirad 907, Omnirad 369, Omnirad 369E, Omnirad 379EG (above, IGM Resins BV), Irgacure 907, Irgacure 369, Irgacure 369, Irger Made) and so on.
- acylphosphine compounds examples include Omnirad 819, Omnirad TPO (above, manufactured by IGM Resins BV), Irgacure 819, and Irgacure TPO (above, manufactured by BASF).
- Examples of the oxime compound include the compound described in JP-A-2001-233842, the compound described in JP-A-2000-080068, the compound described in JP-A-2006-342166, and J. Am. C. S. The compound according to Perkin II (1979, pp. 1653-1660), J. Mol. C. S. The compound described in Perkin II (1979, pp. 156-162), the compound described in Journal of Photopolisr Science and Technology (1995, pp. 202-232), the compound described in JP-A-2000-066385, the compound described in JP-A-2000-066385.
- oxime compound examples include 3-benzoyloxyiminobutane-2-one, 3-acetoxyiminovtan-2-one, 3-propionyloxyiminobutane-2-one, 2-acetoxyiminopentane-3-one, and the like.
- an oxime compound having a fluorene ring can also be used.
- Specific examples of the oxime compound having a fluorene ring include the compound described in JP-A-2014-137466, the compound described in Japanese Patent No. 6636081, and the compound described in Korean Patent Publication No. 10-2016-0109444. Will be.
- an oxime compound having a skeleton in which at least one benzene ring of the carbazole ring is a naphthalene ring can also be used.
- Specific examples of such an oxime compound include the compounds described in International Publication No. 2013/083505.
- an oxime compound having a fluorine atom can also be used as the photopolymerization initiator.
- Specific examples of the oxime compound having a fluorine atom are described in the compounds described in JP-A-2010-262028, compounds 24, 36-40 described in JP-A-2014-500852, and JP-A-2013-164471.
- Compound (C-3) and the like can be mentioned.
- an oxime compound having a nitro group can be used as the photopolymerization initiator.
- the oxime compound having a nitro group is also preferably a dimer.
- Specific examples of the oxime compound having a nitro group include the compounds described in paragraphs 0031 to 0047 of JP2013-114249A and paragraphs 0008-0012 and 0070-0079 of JP-A-2014-137466. Examples thereof include the compound described in paragraphs 0007 to 0025 of Japanese Patent No. 4223071, ADEKA ARCULDS NCI-831 (manufactured by ADEKA Corporation).
- an oxime compound having a benzofuran skeleton can also be used.
- Specific examples include OE-01 to OE-75 described in International Publication No. 2015/036910.
- an oxime compound in which a substituent having a hydroxy group is bonded to the carbazole skeleton can also be used.
- Examples of such a photopolymerization initiator include the compounds described in International Publication No. 2019/088055.
- an oxime compound having an aromatic ring group Ar OX1 having an electron-attracting group introduced into the aromatic ring (hereinafter, also referred to as oxime compound OX) can also be used.
- the electron-attracting group of the aromatic ring group Ar OX1 include an acyl group, a nitro group, a trifluoromethyl group, an alkylsulfinyl group, an arylsulfinyl group, an alkylsulfonyl group, an arylsulfonyl group and a cyano group.
- An acyl group and a nitro group are preferable, an acyl group is more preferable, and a benzoyl group is further preferable.
- the benzoyl group may have a substituent.
- substituents include a halogen atom, a cyano group, a nitro group, a hydroxy group, an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a heterocyclic group, a heterocyclic oxy group, an alkenyl group, an alkylsulfanyl group and an arylsulfanyl group.
- acyl group or an amino group more preferably an alkyl group, an alkoxy group, an aryl group, an aryloxy group, a heterocyclic oxy group, an alkylsulfanyl group, an arylsulfanyl group or an amino group, and more preferably an alkoxy group or an alkyl group. It is more preferably a sulfanyl group or an amino group.
- Specific examples of the oxime compound OX include the compounds described in paragraphs 0083 to 0105 of Japanese Patent No. 4600600.
- the oxime compound is preferably a compound having a maximum absorption wavelength in the wavelength range of 350 to 500 nm, and more preferably a compound having a maximum absorption wavelength in the wavelength range of 360 to 480 nm.
- the molar extinction coefficient of the oxime compound at a wavelength of 365 nm or a wavelength of 405 nm is preferably high, more preferably 1000 to 300,000, still more preferably 2000 to 300,000, and more preferably 5000 to 200,000. It is particularly preferable to have.
- the molar extinction coefficient of a compound can be measured using a known method. For example, it is preferable to measure at a concentration of 0.01 g / L using an ethyl acetate solvent with a spectrophotometer (Cary-5 spectrophotometer manufactured by Varian).
- a bifunctional or trifunctional or higher photoradical polymerization initiator may be used as the photopolymerization initiator.
- two or more radicals are generated from one molecule of the photoradical polymerization initiator, so that good sensitivity can be obtained.
- the crystallinity is lowered, the solubility in a solvent or the like is improved, the precipitation is less likely to occur with time, and the stability of the photosensitive composition with time is improved.
- Specific examples of the bifunctional or trifunctional or higher functional photo-radical polymerization initiators include Japanese Patent Publication No. 2010-527339, Japanese Patent Publication No. 2011-524436, International Publication No.
- the content of the photopolymerization initiator in the total solid content of the underlayer film forming composition is preferably 0.5 to 20% by mass.
- the lower limit is preferably 0.7% by mass or more, more preferably 1% by mass or more.
- the upper limit is preferably 15% by mass or less, more preferably 10% by mass or less.
- the content of the photopolymerization initiator is preferably 0.001 to 0.5% by mass with respect to the total mass of the underlayer film forming composition.
- the lower limit is preferably 0.005% by mass or more, more preferably 0.01% by mass or more.
- the upper limit is preferably 0.3% by mass or less, more preferably 0.1% by mass or less. Only one type of photopolymerization initiator may be used, or two or more types may be used in combination. When two or more types are used in combination, the total amount thereof shall be within the above range.
- the composition for forming a lower layer film can contain a polymerization inhibitor.
- the polymerization inhibitor include hydroquinone, p-methoxyphenol, di-tert-butyl-p-cresol, pyrogallol, tert-butylcatechol, benzoquinone, 4,4'-thiobis (3-methyl-6-tert-butylphenol), and the like.
- examples thereof include 2,2'-methylenebis (4-methyl-6-t-butylphenol) and N-nitrosophenylhydroxyamine salts (ammonium salt, first cerium salt, etc.). Of these, p-methoxyphenol is preferable.
- the content of the polymerization inhibitor in the total solid content of the composition for forming a lower layer film is preferably 0.0001 to 1% by mass.
- the lower limit is preferably 0.001% by mass or more, more preferably 0.01% by mass or more.
- the upper limit is preferably 0.5% by mass or less, more preferably 0.1% by mass or less.
- the content of the polymerization inhibitor is preferably 0.00001 to 0.1% by mass with respect to the total mass of the composition for forming the underlayer film.
- the lower limit is preferably 0.0001% by mass or more, more preferably 0.001% by mass or more.
- the upper limit is preferably 0.05% by mass or less, more preferably 0.01% by mass or less. Only one type of polymerization inhibitor may be used, or two or more types may be used in combination. When two or more types are used in combination, the total amount thereof shall be within the above range.
- the composition for forming a lower layer film may further contain other additives such as an ultraviolet absorber, an antioxidant, and a thermoacid generator, but the content of these other additives is for forming the lower layer film. It is preferably 1% by mass or less, more preferably 0.1% by mass or less, and more preferably not contained in the total solid content of the composition.
- the composition for forming the underlayer film preferably has a halogen content of 0.01% by mass or less, more preferably 0.001% by mass or less, and further preferably 0.0001% by mass or less. , It is particularly preferable that it is not substantially contained.
- the color filter of the present invention is It has a support, a lower layer film formed on the support, and a pixel formed on the lower layer film.
- the underlayer film contains 50% by mass or more of the resin a-1 having an alkyleneoxy structure.
- the underlayer film is characterized in that the film thickness is 30 nm or less.
- the material of the support in the color filter is not particularly limited.
- a silicon substrate, a SiN substrate, a SiO 2 , a glass substrate, a quartz substrate, an InGaAs substrate, and the like can be mentioned.
- the support 10 may be provided with a photoelectric conversion unit.
- the photoelectric conversion unit include a silicon photodiode, an InGaAs photodiode, an organic photoelectric conversion film, and quantum dots.
- a gap may be formed between adjacent photoelectric conversion units.
- a partition wall 11 may be formed on the surface of the support 10.
- the shape of the region partitioned by the partition wall 11 on the support 10 (hereinafter, also referred to as the shape of the opening of the partition wall) is square, but the shape of the opening of the partition wall is particularly high.
- the shape is not limited, and may be, for example, a rectangular shape, a circular shape, an elliptical shape, a polygonal shape, or the like.
- the material of the partition wall 11 is not particularly limited, but it is preferably formed of a material having a refractive index smaller than that of the pixels formed between the partition walls. By doing so, the light that is about to leak from the pixel having a large refractive index is easily reflected by the partition wall 11 and returned to the pixel, and the leakage of the light to the adjacent colored layer can be suppressed. ..
- various inorganic materials and organic materials can be used.
- examples of the organic material include acrylic resin, polystyrene resin, polyimide resin, organic SOG (Spin On Glass) resin, siloxane resin, fluororesin and the like.
- the inorganic material examples include porous silica, polysilicon, silica particles, silicon oxide, silicon nitride, and metal materials such as tungsten and aluminum.
- the partition wall 11 preferably contains silica particles because the strength of the partition wall can be increased.
- silica particles silica particles having a shape in which a plurality of spherical silicas are connected in a bead shape (hereinafter, bead shape) because the heat transfer from the partition wall to the pixel can be suppressed when the color filter is exposed to a high temperature.
- silica particles also referred to as silica
- silica particles having a hollow structure hereinafter, also referred to as hollow silica
- the hydrophobizing agent a compound having a structure that reacts with the hydroxy group on the surface of the silica particles (preferably a structure that couples with the hydroxy group on the surface of the silica particles) and improves the hydrophobicity of the silica particles is used. ..
- the hydrophobizing agent is preferably an organic compound.
- Specific examples of the hydrophobizing agent include an organic silane compound, an organic titanium compound, an organic zirconium compound and an organic aluminum compound, and an organic silane compound is more preferable because an increase in the refractive index can be suppressed.
- "spherical" means that it may be substantially spherical and may be deformed as long as the effect of the present invention is exhibited.
- a plurality of spherical silica particles connected in a bead shape means a structure in which a plurality of spherical silica particles are connected in a linear and / or branched form.
- a plurality of spherical silica particles are connected by a joint having a smaller outer diameter.
- the structure in which "a plurality of spherical silica particles are connected in a bead shape" is not only a structure in which the particles are connected in a ring shape but also a chain shape having an end. Structure is also included.
- the beaded silica preferably has a ratio D 1 / D 2 of the average particle diameter D 1 measured by a dynamic light scattering method and the average particle diameter D 2 obtained by the following formula (1) of 3 or more.
- the upper limit of D 1 / D 2 is not particularly limited, but is preferably 1000 or less, more preferably 800 or less, and even more preferably 500 or less. By setting D 1 / D 2 in such a range, good optical characteristics can be exhibited.
- D 2 is the average particle size of the beaded silica
- the unit is nm
- S is the specific surface area of the beaded silica measured by the nitrogen adsorption method, and the unit is m 2 / g. be.
- the average particle diameter D 2 of the beaded silica can be regarded as an average particle diameter close to the diameter of the primary particles of spherical silica.
- the average particle diameter D 2 is preferably 1 nm or more, more preferably 3 nm or more, further preferably 5 nm or more, and particularly preferably 7 nm or more.
- the upper limit is preferably 100 nm or less, more preferably 80 nm or less, further preferably 70 nm or less, further preferably 60 nm or less, and particularly preferably 50 nm or less.
- the average particle diameter D 2 can be replaced by the equivalent circle diameter (D0) in the projected image of the spherical portion measured by a transmission electron microscope (TEM). Unless otherwise specified, the average particle diameter based on the diameter equivalent to a circle is evaluated by the average number of 50 or more particles.
- D0 equivalent circle diameter
- TEM transmission electron microscope
- the average particle size D 1 of the beaded silica can be regarded as the number average particle size of the secondary particles in which a plurality of spherical silicas are collected. Therefore, the relationship D 1 > D 2 usually holds.
- the average particle size D 1 is preferably 5 nm or more, more preferably 7 nm or more, and particularly preferably 10 nm or more.
- the upper limit is preferably 100 nm or less, more preferably 70 nm or less, further preferably 50 nm or less, and particularly preferably 45 nm or less.
- the measurement of the average particle size D 1 of the beaded silica is performed using a dynamic light scattering type particle size distribution measuring device (Microtrac UPA-EX150 manufactured by Nikkiso Co., Ltd.).
- the procedure is as follows. The dispersion of beaded silica is divided into 20 ml sample bottles and diluted with propylene glycol monomethyl ether so that the solid content concentration becomes 0.2% by mass. The diluted sample solution is irradiated with 40 kHz ultrasonic waves for 1 minute, and immediately after that, it is used for the test. Data is captured 10 times using a 2 ml quartz cell for measurement at a temperature of 25 ° C., and the obtained "number average” is taken as the average particle size.
- JISZ8828 2013 "Particle size analysis-Dynamic light scattering method” as necessary. Five samples are prepared for each level and the average value is adopted.
- the beaded silica it is preferable that a plurality of spherical silicas having an average particle diameter of 1 to 80 nm are connected via a connecting material.
- the upper limit of the average particle size of the spherical silica is preferably 70 nm or less, more preferably 60 nm or less, and further preferably 50 nm or less.
- the lower limit of the average particle size of the spherical silica is preferably 3 nm or more, more preferably 5 nm or more, and further preferably 7 nm or more.
- the value of the average particle diameter of the spherical silica the value of the average particle diameter obtained from the equivalent circle diameter in the projected image of the spherical portion measured by the transmission electron microscope (TEM) is used.
- TEM transmission electron microscope
- Examples of the connecting material for connecting spherical silica to each other in prayer-shaped silica include metal oxide-containing silica.
- Examples of the metal oxide include oxides of metals selected from Ca, Mg, Sr, Ba, Zn, Sn, Pb, Ni, Co, Fe, Al, In, Y, and Ti.
- Examples of the metal oxide-containing silica include a reaction product and a mixture of these metal oxides and silica (SiO 2 ).
- the connecting material the description of International Publication No. 2000/015552 can be taken into consideration, and this content is incorporated in the present specification.
- the number of connected spherical silicas in the beaded silica is preferably 3 or more, and more preferably 5 or more.
- the upper limit is preferably 1000 or less, more preferably 800 or less, and even more preferably 500 or less.
- the number of connected spherical silicas can be measured by TEM.
- particle liquids containing beaded silica include Snowtex series and organosilica sol series (methanol dispersion, isopropyl alcohol dispersion, ethylene glycol dispersion, methyl ethyl ketone dispersion, etc.) manufactured by Nissan Chemical Industry Co., Ltd., product number IPA. -ST-UP, MEK-ST-UP, etc.). Further, as the particle liquid containing beaded silica, for example, the silica sol described in Japanese Patent No. 4328935 can be used.
- the average particle size of hollow silica is preferably 10 to 500 nm.
- the lower limit is preferably 15 nm or more, more preferably 20 nm or more, and even more preferably 25 nm or more.
- the upper limit is preferably 300 nm or less, more preferably 200 nm or less, and even more preferably 100 nm or less.
- the average particle size of hollow silica is a value measured by a dynamic light scattering method. Examples of commercially available particle liquids containing hollow silica include "Thruria 4110" manufactured by JGC Catalysts and Chemicals Co., Ltd.
- the partition wall 11 can be formed by using a conventionally known method.
- the partition wall can be formed as follows.
- a partition wall material layer is formed on the support.
- the partition wall material layer can be formed, for example, by applying a composition containing inorganic particles such as silica particles (partition wall forming composition) onto a support and then curing the partition wall material layer.
- a composition containing inorganic particles such as silica particles
- Examples of such a composition include the compositions described in paragraphs 0012 to 0077 and 093 to 0105 of International Publication No. 2019/017280, and the compositions described in paragraph numbers 0081 to 0091 of International Publication No. 2019/11748. Items and the like are mentioned, and these contents are incorporated in the present specification.
- the solid content concentration of the partition wall forming composition is preferably 3 to 20% by mass, more preferably 5 to 18% by mass, and more preferably 7 to 16% by mass.
- the partition wall material layer can be formed by forming an inorganic material such as silicon dioxide on a support by a vapor deposition method such as chemical vapor deposition (CVD) or vacuum deposition, or a method such as sputtering.
- a vapor deposition method such as chemical vapor deposition (CVD) or vacuum deposition, or a method such as sputtering.
- a resist pattern is formed on the partition wall material layer using a mask having a pattern along the shape of the partition wall.
- the partition wall material layer is etched to form a pattern.
- the etching method include a dry etching method and a wet etching method. Etching by the dry etching method can be performed under the conditions described in paragraphs 0128 to 0133 of JP-A-2016-014856.
- the resist pattern is then stripped off from the bulkhead material layer. In this way, the partition wall can be formed.
- the width W1 of the partition wall 11 is preferably 80 to 150 nm.
- the lower limit of the width W1 of the partition wall 11 is preferably 90 nm or more, more preferably 100 nm or more, and further preferably 110 nm or more from the viewpoint of the strength of the partition wall.
- the upper limit of the width W1 of the partition wall 11 is preferably 140 nm or less, and more preferably 130 nm or less from the viewpoint of ensuring an effective pixel size.
- the thickness (height) H1 of the partition wall 11 is preferably 300 to 650 nm.
- the lower limit of the thickness H1 of the partition wall 11 is preferably 350 nm or more, more preferably 400 nm or more, and further preferably 450 nm or more.
- the upper limit of the thickness H1 of the partition wall 11 is preferably 600 nm or less, more preferably 550 nm or less, and further preferably 500 nm or less.
- the thickness of the partition wall means the length of the partition wall in the vertical direction
- the width of the partition wall means the length of the partition wall in the horizontal direction
- the porosity of the partition wall 11 is preferably 20 to 80%.
- the lower limit of the porosity is preferably 30% or more, more preferably 40% or more.
- the upper limit of the porosity is preferably 70% or less, more preferably 60% or less.
- the porosity of the partition wall is a value measured by the X-ray reflectivity method. Further, since the partition wall has a void, the thermal conductivity of the partition wall is lowered, and heat transfer from the partition wall to the pixel portion can be suppressed.
- the pitch W3 of the partition wall 11 arranged on the support 10 is preferably 400 to 1200 nm.
- the lower limit of the pitch W3 is preferably 450 nm or more, and more preferably 500 nm or more.
- the upper limit of the pitch W3 is preferably 1000 nm or less, more preferably 900 nm or less, and further preferably 800 nm or less.
- the bulkhead pitch is the total value of the bulkhead width W1 and the bulkhead opening 12 width W2 (distance between facing surfaces of the facing bulkheads).
- the width W2 of the partition wall opening is preferably 300 to 1100 nm.
- the lower limit is preferably 400 nm or more, and more preferably 450 nm or more.
- the upper limit is preferably 1000 nm or less, more preferably 900 nm or less.
- an underlayer film is formed on the support.
- This underlayer film contains 50% by mass or more of resin a-1 (specific resin) having an alkyleneoxy structure.
- resin a-1 the resin described as the above-mentioned specific resin can be mentioned, and the preferred range is also the same.
- the content of the resin a-1 (specific resin) in the underlayer film is 50% by mass or more, preferably 70% by mass or more, and more preferably 90% by mass or more.
- the upper limit may be 100% by mass or less.
- the film thickness of the underlayer film is 30 nm or less, preferably 1 to 20 nm, and more preferably 1 to 10 nm.
- a lower layer film may be formed on the side surface of the partition wall as well.
- the lower layer film in the color filter is preferably a lower layer film formed by using the above-mentioned composition for forming the lower layer film of the present invention.
- pixels are formed on the support.
- the type of pixel is not particularly limited. Examples thereof include colored pixels such as red pixels, blue pixels, green pixels, yellow pixels, magenta pixels, and cyan pixels, transparent pixels, infrared transmission filter pixels, and infrared cut filter pixels. It is preferable that at least one type of pixel is a colored pixel.
- the colored pixels can be formed by using a conventionally known composition for forming colored pixels. For example, a composition containing a coloring material, a polymerizable compound, a photopolymerization initiator, a resin, and a solvent can be used.
- the film thickness of the pixel is preferably 20 ⁇ m or less, more preferably 10 ⁇ m or less, and further preferably 5 ⁇ m or less.
- the lower limit of the film thickness is preferably 0.1 ⁇ m or more, more preferably 0.2 ⁇ m or more, and further preferably 0.3 ⁇ m or more.
- the pixel width is preferably 0.4 to 10.0 ⁇ m.
- the lower limit is preferably 0.4 ⁇ m or more, more preferably 0.5 ⁇ m or more, and further preferably 0.6 ⁇ m or more.
- the upper limit is preferably 5.0 ⁇ m or less, more preferably 2.0 ⁇ m or less, further preferably 1.0 ⁇ m or less, and even more preferably 0.8 ⁇ m or less.
- an underlayer film may be formed on the side surface or the surface of the pixel.
- the color filter of the present invention may be provided with a protective layer on the surface of each pixel.
- a protective layer By providing the protective layer, various functions such as oxygen blocking, low reflection, prohydrophobicization, and shielding of light of a specific wavelength (ultraviolet rays, near infrared rays, etc.) can be imparted.
- the thickness of the protective layer is preferably 0.01 to 10 ⁇ m, more preferably 0.1 to 5 ⁇ m.
- Examples of the method for forming the protective layer include a method of applying a resin composition for forming a protective layer to form the protective layer, a chemical vapor deposition method, and a method of attaching a molded resin with an adhesive.
- the components constituting the protective layer include (meth) acrylic resin, en-thiol resin, polycarbonate resin, polyether resin, polyarylate resin, polysulfone resin, polyethersulfone resin, polyphenylene resin, polyarylene ether phosphine oxide resin, and polyimide.
- Resin polyamideimide resin, polyolefin resin, cyclic olefin resin, polyester resin, styrene resin, polyol resin, polyvinylidene chloride resin, melamine resin, urethane resin, aramid resin, polyamide resin, alkyd resin, epoxy resin, modified silicone resin, fluorine Examples thereof include resins, polycarbonate resins, polyacrylonitrile resins, cellulose resins, Si, C, W, Al 2 O 3 , Mo, SiO 2 , Si 2 N 4 , and the like, and two or more of these components may be contained.
- the protective layer in the case of a protective layer for the purpose of blocking oxygen, it is preferable that the protective layer contains a polyol resin, SiO 2 , and Si 2 N 4 . Further, in the case of a protective layer for the purpose of reducing reflection, it is preferable that the protective layer contains a (meth) acrylic resin and a fluororesin.
- the protective layer may be an additive such as organic / inorganic fine particles, an absorber for light of a specific wavelength (for example, ultraviolet rays, near infrared rays, etc.), a refractive index adjusting agent, an antioxidant, an adhesive, and a surfactant, if necessary. May be contained.
- organic / inorganic fine particles include polymer fine particles (for example, silicone resin fine particles, polystyrene fine particles, melamine resin fine particles), titanium oxide, zinc oxide, zirconium oxide, indium oxide, aluminum oxide, titanium nitride, and titanium oxynitride. , Magnesium fluoride, hollow silica, silica, calcium carbonate, barium sulfate and the like.
- a known absorber can be used as the absorber of light having a specific wavelength.
- the content of these additives can be adjusted as appropriate, but is preferably 0.1 to 70% by mass, more preferably 1 to 60% by mass, based on the total mass of the protective layer
- the protective layer described in paragraphs 0073 to 0092 of JP-A-2017-151176 can also be used.
- a partition wall is formed on the surface of the support.
- An underlayer film is formed on the support and in the area partitioned by the partition wall.
- An example is a color filter in which pixels are formed on an underlayer film.
- Examples of the color filter of such an aspect include the color filter of the aspect shown in FIG.
- FIG. 3 is a diagram showing an embodiment of a color filter using a support having a partition wall having the structure shown in FIGS. 1 and 2, and is a plan view seen from directly above the support, with reference numeral 11 being a plan view. It is a partition wall, and reference numerals 31 to 33 are pixels.
- the method for producing a color filter of the present invention includes a step of forming a lower layer film by applying the above-mentioned composition for forming a lower layer film of the present invention on a support, and a step of forming pixels on the lower layer film. ..
- the above-mentioned composition for forming the underlayer film of the present invention is applied onto the support to form the underlayer film.
- the support include those described above.
- the method of applying the composition for forming an underlayer film is not particularly limited, and examples thereof include a spin coating method, a slit coating method, an inkjet method, a dip coating method, and a screen printing method. Of these, the spin coating method is preferable because it can form a uniform film with a small amount.
- drying temperature is preferably 60 to 150 ° C.
- the upper limit of the drying temperature is preferably 130 ° C. or lower, more preferably 110 ° C. or lower.
- the lower limit of the drying temperature is preferably 80 ° C. or higher, more preferably 90 ° C. or higher.
- the drying time is preferably 60 to 600 seconds.
- the upper limit of the drying time is preferably 300 seconds or less, more preferably 180 seconds or less.
- the lower limit of the drying time is preferably 80 seconds or more, more preferably 100 seconds or more. Drying can be performed using a hot plate, an oven, or the like.
- the composition for forming an underlayer film applied on the support may be subjected to a drying treatment and then further heat-treated (post-baked).
- the post-baking temperature is preferably 180 to 260 ° C., for example.
- the upper limit of the post-bake temperature is preferably 250 ° C. or lower, more preferably 240 ° C. or lower.
- the lower limit of the post-bake temperature is preferably 190 ° C. or higher, more preferably 200 ° C. or higher.
- the post-bake time is preferably 60 seconds to 600 seconds.
- the upper limit of the post-baking time is preferably 300 seconds or less, more preferably 180 seconds or less.
- the lower limit of the post-baking time is preferably 80 seconds or more, more preferably 100 seconds or more.
- Post-baking can be performed using a hot plate, an oven, or the like.
- pixels are formed on the underlayer film formed as described above.
- the steps for forming pixels include a step of applying a pixel forming composition to form a pixel forming composition layer, a step of exposing the pixel forming composition layer in a pattern, and a step of exposing the pixel forming composition layer to a pattern. It includes a step of developing and removing an unexposed portion.
- each step will be described.
- Step of forming a composition layer for pixel formation the pixel-forming composition is applied on the underlayer film to form the pixel-forming composition layer.
- a method for applying the composition for forming pixels a known method can be used. For example, a drop method (drop cast); a slit coat method; a spray method; a roll coat method; a rotary coating method (spin coating); a cast coating method; a slit and spin method; a pre-wet method (for example, JP-A-2009-145395).
- Inkjet for example, on-demand method, piezo method, thermal method
- ejection system printing such as nozzle jet, flexographic printing, screen printing, gravure printing, reverse offset printing, metal mask printing method, etc.
- Various printing methods; transfer method using a mold or the like; nanoinprint method and the like can be mentioned.
- the method of application in inkjet is not particularly limited, and is, for example, the method shown in "Expandable / usable inkjet-infinite possibilities seen in patents-, published in February 2005, Sumi Betechno Research" (especially from page 115).
- the prebake temperature is preferably 150 ° C. or lower, more preferably 120 ° C. or lower, still more preferably 110 ° C. or lower.
- the lower limit can be, for example, 50 ° C. or higher, or 80 ° C. or higher.
- the prebake time is preferably 10 to 3000 seconds, more preferably 40 to 2500 seconds, and even more preferably 80 to 2200 seconds. Pre-baking can be performed on a hot plate, an oven, or the like.
- the pixel-forming composition layer formed on the lower film is exposed in a pattern.
- the pixel-forming composition layer can be exposed in a pattern by exposing it through a mask having a predetermined mask pattern using a stepper exposure machine, a scanner exposure machine, or the like. As a result, the exposed portion can be cured.
- Examples of radiation (light) that can be used for exposure include g-line and i-line.
- the radiation (light) that can be used for exposure is preferably light having a wavelength of 300 nm or less (preferably light having a wavelength of 180 to 300 nm). That is, in the exposure step, it is preferable to irradiate with light having a wavelength of 300 nm or less for exposure.
- Examples of the light having a wavelength of 300 nm or less include KrF line (wavelength 248 nm), ArF line (wavelength 193 nm) and the like, and KrF line (wavelength 248 nm) is preferable. Further, the exposure may be performed using light having a wavelength exceeding 300 nm.
- pulse exposure is an exposure method of a method in which light irradiation and pause are repeated in a cycle of a short time (for example, a millisecond level or less).
- the irradiation amount is, for example, preferably 0.03 to 2.5 J / cm 2 , more preferably 0.05 to 1.0 J / cm 2 .
- the oxygen concentration at the time of exposure can be appropriately selected, and in addition to the operation in the atmosphere, for example, in a low oxygen atmosphere having an oxygen concentration of 19% by volume or less (for example, 15% by volume, 5% by volume, or substantially). It may be exposed in an oxygen-free environment (for example, 22% by volume, 30% by volume, or 50% by volume) in a high oxygen atmosphere having an oxygen concentration of more than 21% by volume.
- the exposure illuminance can be set as appropriate, and is usually selected from the range of 1000 W / m 2 to 100,000 W / m 2 (for example, 5000 W / m 2 , 15,000 W / m 2 , or 35,000 W / m 2 ). Can be done.
- the oxygen concentration and the exposure illuminance may be appropriately combined with each other.
- the oxygen concentration may be 10% by volume and the illuminance may be 10,000 W / m 2
- the oxygen concentration may be 35% by volume and the illuminance may be 20000 W / m 2 .
- the unexposed portion of the pixel-forming composition layer is developed and removed.
- the development and removal of the unexposed portion of the pixel-forming composition layer can be performed using a developer.
- the pixel-forming composition layer of the unexposed portion in the exposure step is eluted in the developing solution, and only the photo-cured portion remains, and pixels are formed.
- the temperature of the developer is preferably, for example, 20 to 30 ° C.
- the development time is preferably 20 to 180 seconds. Further, in order to improve the residue removability, the steps of shaking off the developer every 60 seconds and supplying a new developer may be repeated several times.
- Examples of the developing solution include organic solvents and alkaline developing solutions, and alkaline developing solutions are preferably used.
- the alkaline developer an alkaline aqueous solution (alkaline developer) obtained by diluting an alkaline agent with pure water is preferable.
- the alkaline agent include ammonia, ethylamine, diethylamine, dimethylethanolamine, diglycolamine, diethanolamine, hydroxyamine, ethylenediamine, tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, and tetrabutylammonium hydroxide.
- Ethyltrimethylammonium hydroxide Ethyltrimethylammonium hydroxide, benzyltrimethylammonium hydroxide, dimethylbis (2-hydroxyethyl) ammonium hydroxide, choline, pyrrole, piperidine, 1,8-diazabicyclo- [5.4.0] -7-undecene, etc.
- examples thereof include organic alkaline compounds and inorganic alkaline compounds such as sodium hydroxide, potassium hydroxide, sodium carbonate, sodium hydrogencarbonate, sodium silicate and sodium metasilicate.
- the alkaline agent a compound having a large molecular weight is preferable in terms of environment and safety.
- the concentration of the alkaline agent in the alkaline aqueous solution is preferably 0.001 to 10% by mass, more preferably 0.01 to 1% by mass.
- the developer may further contain a surfactant. From the viewpoint of convenience of transfer and storage, the developer may be once produced as a concentrated solution and diluted to a concentration required for use.
- the dilution ratio is not particularly limited, but can be set in the range of, for example, 1.5 to 100 times. It is also preferable to wash (rinse) with pure water after development. Further, it is preferable that the rinsing is performed by supplying the rinsing liquid to the developed pixel-forming composition layer while rotating the support on which the developed pixel-forming composition layer is formed.
- the nozzle for discharging the rinse liquid from the central portion of the support it is also preferable to move the nozzle for discharging the rinse liquid from the central portion of the support to the peripheral edge of the support.
- the nozzle may be moved while gradually reducing the moving speed. By rinsing in this way, in-plane variation of the rinse can be suppressed. Further, the same effect can be obtained by gradually reducing the rotation speed of the support while moving the nozzle from the central portion of the support to the peripheral portion.
- Additional exposure processing and post-baking are post-development curing treatments to complete the curing.
- the heating temperature in the post-bake is, for example, preferably 100 to 240 ° C, more preferably 200 to 240 ° C.
- Post-baking can be performed on the developed film in a continuous or batch manner using a heating means such as a hot plate, a convection oven (hot air circulation type dryer), or a high frequency heater so as to meet the above conditions. ..
- the light used for the exposure is preferably light having a wavelength of 400 nm or less. Further, the additional exposure process may be performed by the method described in Korean Patent Publication No. 10-2017-0122130.
- a color filter having a plurality of pixels can be manufactured by repeating the above-mentioned step of forming the pixels for each pixel type.
- the residue of the pixel-forming composition to be formed next remains on the pixels to be formed first. This can be suppressed, and a color filter having better image performance can be manufactured.
- the pixel forming composition preferably contains a coloring material.
- the coloring material include a yellow coloring material, an orange coloring material, a red coloring material, a green coloring material, a purple coloring material, and a blue coloring material.
- the coloring material may be a pigment or a dye. Pigments and dyes may be used in combination. Further, the pigment may be either an inorganic pigment or an organic pigment. Further, as the pigment, an inorganic pigment or a material in which a part of the organic-inorganic pigment is replaced with an organic chromophore can also be used. By substituting inorganic pigments and organic-inorganic pigments with organic chromophores, hue design can be facilitated.
- the average primary particle size of the pigment is preferably 1 to 200 nm.
- the lower limit is preferably 5 nm or more, more preferably 10 nm or more.
- the upper limit is preferably 180 nm or less, more preferably 150 nm or less, still more preferably 100 nm or less.
- the primary particle size of the pigment can be obtained from an image photograph obtained by observing the primary particles of the pigment with a transmission electron microscope. Specifically, the projected area of the primary particles of the pigment is obtained, and the corresponding circle-equivalent diameter is calculated as the primary particle diameter of the pigment.
- the average primary particle size in the present invention is an arithmetic average value of the primary particle size for the primary particles of 400 pigments.
- the primary particles of the pigment refer to independent particles without aggregation.
- the content of the pigment in the coloring material is preferably 50% by mass or more, more preferably 70% by mass or more, further preferably 80% by mass or more, and preferably 90% by mass or more. Especially preferable.
- the pigment include those shown below.
- halogenated zinc phthalocyanine having an average number of halogen atoms in one molecule of 10 to 14, a bromine atom of 8 to 12, and a chlorine atom of 2 to 5 on average. Pigments can also be used. Specific examples include the compounds described in International Publication No. 2015/118720. Further, as a green color material, the compound described in Chinese Patent Application No. 1069090227, the phthalocyanine compound having a phosphoric acid ester described in International Publication No. 2012/102395 as a ligand, and Japanese Patent Application Laid-Open No. 2019-008014.
- the phthalocyanine compound described in JP-A-2018-180023, the compound described in JP-A-2019-038958, and the like can also be used. Further, as the green color material, the core-shell type dye described in JP-A-2020-07695 can also be used.
- an aluminum phthalocyanine compound having a phosphorus atom can also be used as the blue color material. Specific examples thereof include the compounds described in paragraph numbers 0022 to 0030 of JP2012-247591A and paragraph numbers 0047 of JP2011-157478A.
- a nickel azobarbiturate complex having the following structure can also be used.
- the compounds described in JP-A-2017-201003, the compounds described in JP-A-2017-197719, and paragraph numbers 0011 to 0062 and 0137-0276 of JP-A-2017-171912 are described.
- red color material a diketopyrrolopyrrole compound in which at least one bromine atom is substituted in the structure described in JP-A-2017-201384, and a diketopyrrolopyrrole compound described in paragraphs 0016 to 0022 of Patent No. 6248838.
- red pigment a compound having a structure in which an aromatic ring group having an oxygen atom, a sulfur atom or a nitrogen atom bonded to the aromatic ring is bonded to a diketopyrrolopyrrole skeleton can also be used. can.
- diarylmethane compound described in Japanese Patent Publication No. 2020-504758 can also be used as the coloring material.
- the descriptions of Japanese Patent No. 6561862, Japanese Patent No. 6413872, Japanese Patent No. 6281345, and Japanese Patent Application Laid-Open No. 2020-026503 can be referred to. Incorporated herein.
- the pyrrolopyrrole pigment shall have a crystallite size of 140 ⁇ or less in the plane direction corresponding to the maximum peak in the X-ray diffraction pattern among the eight planes ( ⁇ 1 ⁇ 1 ⁇ 1) of the crystal lattice planes. Is also preferable. Further, it is also preferable to set the physical characteristics of the pyrrolopyrrole pigment as described in paragraphs 0028 to 0073 of JP-A-2020-097744.
- the content of the coloring material in the total solid content of the pixel forming composition is preferably 10% by mass or more, more preferably 20% by mass or more, still more preferably 30% by mass or more.
- the upper limit is preferably 80% by mass or less, more preferably 75% by mass or less, still more preferably 70% by mass or less.
- the color material contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel forming composition contains two or more kinds of coloring materials, it is preferable that the total amount thereof is in the above range.
- the pixel-forming composition preferably contains a pigment derivative.
- the pigment derivative include compounds having a structure in which an acid group or a basic group is bonded to a pigment skeleton.
- the pigment skeletons constituting the pigment derivatives include quinoline pigment skeleton, benzoimidazolone pigment skeleton, benzoisoindole pigment skeleton, benzothiazole pigment skeleton, iminium pigment skeleton, squarylium pigment skeleton, croconium pigment skeleton, oxonol pigment skeleton, and pyrolopyrrolop pigment.
- Examples of the acid group include a sulfo group, a carboxyl group, a phosphoric acid group and salts thereof.
- alkali metal ions Li + , Na + , K + , etc.
- alkaline earth metal ions Ca 2+ , Mg 2+ , etc.
- ammonium ions imidazolium ions, pyridinium ions, etc.
- Examples include phosphonium ion.
- Examples of the basic group include an amino group, a pyridinyl group and a salt thereof, a salt of an ammonium group, and a phthalimidemethyl group.
- the atom or atomic group constituting the salt include hydroxide ion, halogen ion, carboxylic acid ion, sulfonic acid ion, and phenoxide ion.
- a pigment derivative having excellent visible transparency (hereinafter, also referred to as a transparent pigment derivative) can be contained.
- the maximum molar extinction coefficient ( ⁇ max) of the transparent pigment derivative in the wavelength region of 400 to 700 nm is preferably 3000 L ⁇ mol -1 ⁇ cm -1 or less, and 1000 L ⁇ mol -1 ⁇ cm -1 or less. Is more preferable, and 100 L ⁇ mol -1 ⁇ cm -1 or less is further preferable.
- the lower limit of ⁇ max is, for example, 1 L ⁇ mol -1 ⁇ cm -1 or more, and may be 10 L ⁇ mol -1 ⁇ cm -1 or more.
- pigment derivative examples include the compounds described in Examples described later, JP-A-56-118462, JP-A-63-246674, JP-A-01-217077, and JP-A-03-009961.
- Japanese Patent Laid-Open No. 03-026767 Japanese Patent Application Laid-Open No. 03-153780
- Japanese Patent Application Laid-Open No. 03-045662 Japanese Patent Application Laid-Open No. 04-285669
- Japanese Patent Application Laid-Open No. 06-145546 Japanese Patent Application Laid-Open No. 06-212088, Kaihei 06-240158
- Japanese Patent Laid-Open No. 10-030063 Japanese Patent Application Laid-Open No. 10-195326
- Paragraph Nos Japanese Patent Laid-Open No.
- the content of the pigment derivative is preferably 1 to 30 parts by mass, more preferably 3 to 25 parts by mass, still more preferably 5 to 20 parts by mass with respect to 100 parts by mass of the pigment. Only one kind of pigment derivative may be used, or two or more kinds may be used in combination. When two or more types are used in combination, the total amount thereof is preferably in the above range.
- the pixel forming composition preferably contains a polymerizable compound.
- the polymerizable compound include the polymerizable compounds described as those contained in the above-mentioned composition for forming an underlayer film, and a compound having an ethylenically unsaturated bond-containing group is preferable. It is also preferable to use a compound having an ethylenically unsaturated bond-containing group and a compound having a cyclic ether group in combination.
- the content of the polymerizable compound in the total solid content of the pixel-forming composition is preferably 0.1 to 50% 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 40% by mass or less, more preferably 30% by mass or less.
- the polymerizable compound contained in the pixel-forming composition may be only one kind or two or more kinds. When the composition for forming pixels contains two or more kinds of polymerizable compounds, it is preferable that the total amount thereof is in the above range.
- the pixel forming composition preferably contains a photopolymerization initiator.
- the photopolymerization initiator include the photopolymerization initiator described as being contained in the above-mentioned composition for forming an underlayer film, and the preferred range is also the same.
- the content of the photopolymerization initiator in the total solid content of the pixel forming composition is preferably 0.1 to 30% by mass, more preferably 0.5 to 20% by mass, still more preferably 1 to 15% by mass.
- the photopolymerization initiator contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel-forming composition contains two or more photopolymerization initiators, the total amount thereof is preferably in the above range.
- the pixel forming composition preferably contains a resin.
- the resin is blended, for example, for the purpose of dispersing particles such as pigments in a pixel-forming composition or for a binder.
- a resin mainly used for dispersing particles such as pigments is also referred to as a dispersant.
- such use of the resin is an example, and it can be used for purposes other than such use.
- the weight average molecular weight (Mw) of the resin is preferably 3000 to 2000000.
- the upper limit is preferably 1,000,000 or less, more preferably 500,000 or less.
- the lower limit is preferably 4000 or more, more preferably 5000 or more.
- the resin examples include (meth) acrylic resin, en-thiol resin, polycarbonate resin, polyether resin, polyarylate resin, polysulfone resin, polyethersulfone resin, polyphenylene resin, polyarylene ether phosphine oxide resin, polyimide resin, and polyamideimide resin. , Polyolefin resin, cyclic olefin resin, polyester resin, styrene resin and the like. One of these resins may be used alone, or two or more thereof may be mixed and used.
- the resin it is preferable to use a resin having an acid group.
- the developability of the pixel forming composition can be improved.
- the acid group include a carboxyl group, a phosphoric acid group, a sulfo group, a phenolic hydroxy group and the like, and a carboxyl group is preferable.
- the resin having an acid group can be used, for example, as an alkali-soluble resin.
- the resin having an acid group is preferably a resin containing a repeating unit having an acid group in the side chain, and is a resin containing 5 to 70 mol% of the repeating unit having an acid group in the side chain in all the repeating units of the resin. Is more preferable.
- the upper limit of the content of the repeating unit having an acid group in the side chain is more preferably 50 mol% or less, and particularly preferably 30 mol% or less.
- the lower limit of the content of the repeating unit having an acid group in the side chain is more preferably 10 mol% or more, and particularly preferably 20 mol% or more.
- a resin as a dispersant can also be used.
- the dispersant include an acidic dispersant (acidic resin) and a basic dispersant (basic resin).
- the acidic dispersant (acidic resin) represents a resin in which the amount of acid groups is larger than the amount of basic groups.
- the acid dispersant (acidic resin) is preferably a resin in which the amount of acid groups is 70 mol% or more when the total amount of the amount of acid groups and the amount of basic groups is 100 mol%, and is substantially acid. A resin consisting only of a group is more preferable.
- the acid group of the acidic dispersant (acidic resin) is preferably a carboxyl group.
- the acid value of the acidic dispersant is preferably 40 to 105 mgKOH / g, more preferably 50 to 105 mgKOH / g, and even more preferably 60 to 105 mgKOH / g.
- the basic dispersant represents a resin in which the amount of basic groups is larger than the amount of acid groups.
- the basic dispersant (basic resin) is preferably a resin in which the amount of basic groups exceeds 50 mol% when the total amount of the amount of acid groups and the amount of basic groups is 100 mol%.
- the basic group of the basic dispersant is preferably an amino group.
- the resin used as the dispersant is preferably a graft resin.
- the graft resin examples include the resins described in paragraphs 0025 to 0094 of JP2012-255128, the contents of which are incorporated in the present specification.
- the resin used as the dispersant is preferably a polyimine-based dispersant containing a nitrogen atom in at least one of the main chain and the side chain.
- the polyimine-based dispersant has a main chain having a partial structure having a functional group of pKa14 or less, a side chain having 40 to 10,000 atoms, and a basic nitrogen atom in at least one of the main chain and the side chain.
- the resin to have is preferable.
- the basic nitrogen atom is not particularly limited as long as it is a nitrogen atom exhibiting basicity.
- the polyimine-based dispersant examples include the resins described in paragraphs 0102 to 0166 of JP2012-255128A, the contents of which are incorporated in the present specification.
- the resin used as the dispersant is preferably a resin having a structure in which a plurality of polymer chains are bonded to the core portion.
- examples of such resins include dendrimers (including star-shaped polymers).
- Specific examples of the dendrimer include the polymer compounds C-1 to C-31 described in paragraphs 0196 to 0209 of JP2013-043962.
- the dispersant polyethyleneimine having a polyester side chain described in International Publication No. 2016/104803, a block copolymer described in International Publication No.
- a block polymer having an acrylamide structural unit, a block polymer having an acrylamide structural unit described in JP-A-2020-066688, and the like can also be used.
- Dispersants are also available as commercial products, and specific examples thereof include DISPERBYK series manufactured by BYK Chemie (for example, DISPERBYK-111, 161 etc.) and Solsparse series manufactured by Japan Lubrizol Co., Ltd. (for example, DISPERBYK-111, 161 etc.). For example, Solsparse 76500) and the like.
- the pigment dispersants described in paragraphs 0041 to 0130 of JP2014-130338A can also be used, and the contents thereof are incorporated in the present specification.
- the resin described as the dispersant can also be used for purposes other than the dispersant. For example, it can also be used as a binder.
- the content of the resin in the total solid content of the pixel forming composition is preferably 1 to 50% by mass.
- the lower limit is more preferably 5% by mass or more, further preferably 10% by mass or more.
- the upper limit is more preferably 40% by mass or less, further preferably 30% by mass or less.
- the resin contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel forming composition contains two or more kinds of resins, it is preferable that the total amount thereof is in the above range.
- the pixel forming composition preferably contains a solvent.
- the solvent include the solvent described as being contained in the above-mentioned composition for forming an underlayer film, and the preferred range is also the same.
- the content of the solvent in the pixel-forming composition is preferably 10 to 95% by mass, more preferably 20 to 90% by mass, and even more preferably 30 to 90% by mass.
- the solvent contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel forming composition contains two or more kinds of solvents, the total amount thereof is preferably in the above range.
- the composition for forming pixels can contain a surfactant.
- the surfactant include the surfactant described as being contained in the above-mentioned composition for forming an underlayer film, and the preferred range is also the same.
- the content of the surfactant in the total solid content of the pixel forming composition is preferably 0.001% by mass to 5.0% by mass, more preferably 0.005 to 3.0% by mass.
- the pixel-forming composition may contain only one type of surfactant or two or more types of surfactant. When the pixel forming composition contains two or more kinds of surfactants, it is preferable that the total amount thereof is in the above range.
- the composition for forming pixels can contain a polymerization inhibitor.
- the polymerization inhibitor include the solvent described as being contained in the composition for forming an underlayer film described above, and the preferred range is also the same.
- the content of the polymerization inhibitor in the total solid content of the pixel forming composition is preferably 0.0001 to 5% by mass.
- the polymerization inhibitor contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel forming composition contains two or more kinds of polymerization inhibitors, the total amount thereof is preferably in the above range.
- the composition for forming pixels can contain an ultraviolet absorber.
- an ultraviolet absorber a conjugated diene compound, an aminodiene compound, a salicylate compound, a benzophenone compound, a benzotriazole compound, an acrylonitrile compound, a hydroxyphenyltriazine compound, an indole compound, a triazine compound and the like can be used. Examples of such compounds include paragraph numbers 0038 to 0052 of JP2009-217221A, paragraph numbers 0052 to 0072 of JP2012-208374A, and paragraph numbers 0317 to 0334 of JP2013-066814.
- the compounds described in paragraphs 0061 to 0080 of JP 2016-162946 are mentioned, the contents of which are incorporated herein by reference.
- Examples of commercially available ultraviolet absorbers include UV-503 (manufactured by Daito Kagaku Co., Ltd.).
- Examples of the benzotriazole compound include the MYUA series made of Miyoshi Oil & Fat (The Chemical Daily, February 1, 2016).
- the ultraviolet absorber the compounds described in paragraphs 0049 to 0059 of Japanese Patent No. 6268967 can also be used.
- the content of the ultraviolet absorber in the total solid content of the pixel forming composition is preferably 0.01 to 10% by mass, more preferably 0.01 to 5% by mass.
- the ultraviolet absorber contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel forming composition contains two or more kinds of ultraviolet absorbers, the total amount thereof is preferably in the above range.
- the pixel forming composition can contain a silane coupling agent.
- the silane coupling agent means a silane compound having a hydrolyzable group and other functional groups.
- the hydrolyzable group refers to a substituent that is directly linked to a silicon atom and can form a siloxane bond by at least one of a hydrolysis reaction and a condensation reaction.
- the hydrolyzable group include a halogen atom, an alkoxy group, an acyloxy group and the like, and an alkoxy group is preferable. That is, the silane coupling agent is preferably a compound having an alkoxysilyl group.
- Examples of the functional group other than the hydrolyzable group include a vinyl group, a (meth) allyl group, a (meth) acryloyl group, a mercapto group, an epoxy group, an oxetanyl group, an amino group, a ureido group, a sulfide group and an isocyanate group.
- a phenyl group and the like preferably an amino group, a (meth) acryloyl group and an epoxy group.
- Specific examples of the silane coupling agent include the compounds described in paragraphs 0018 to 0036 of JP2009-288703 and the compounds described in paragraphs 0056 to 0066 of JP2009-242604A.
- the contents of are incorporated herein by reference.
- the content of the silane coupling agent in the total solid content of the pixel forming composition is preferably 0.1 to 5% by mass.
- the upper limit is preferably 3% by mass or less, more preferably 2% by mass or less.
- the lower limit is preferably 0.5% by mass or more, more preferably 1% by mass or more.
- the silane coupling agent contained in the pixel forming composition may be only one kind or two or more kinds. When the pixel forming composition contains two or more kinds of silane coupling agents, the total amount thereof is preferably in the above range.
- the pixel-forming composition may optionally include antioxidants, sensitizers, cure accelerators, fillers, thermosetting accelerators, plasticizers and other auxiliaries (eg, conductive particles, defoamers, etc.). It may contain a flame retardant, a leveling agent, a peeling accelerator, a fragrance, a surface tension adjusting agent, a chain transfer agent, etc.). By appropriately containing these components, properties such as film physical characteristics can be adjusted. These components are described in, for example, paragraph No. 0183 or later of JP2012-003225A (paragraph number 0237 of the corresponding US Patent Application Publication No. 2013/0034812), paragraph 2008-250074. The description of numbers 0101 to 0104, 0107 to 0109, etc.
- the pixel-forming composition may contain a latent antioxidant, if necessary.
- the latent antioxidant is a compound in which the site that functions as an antioxidant is protected by a protecting group, and is heated at 100 to 250 ° C. or at 80 to 200 ° C. in the presence of an acid / base catalyst. This includes compounds in which the protecting group is desorbed and functions as an antioxidant.
- Examples of the latent antioxidant include compounds described in International Publication No. 2014/021023, International Publication No. 2017/030005, and JP-A-2017-008219.
- Examples of commercially available products of latent antioxidants include ADEKA ARKULS GPA-5001 (manufactured by ADEKA Corporation).
- the solid-state image sensor of the present invention has the color filter of the present invention described above.
- the configuration of the solid-state image sensor is not particularly limited as long as it includes the structure of the present invention and functions as a solid-state image sensor, and examples thereof include the following configurations.
- a solid-state image pickup device CCD (charge-coupled device) image sensor, CMOS (complementary metal oxide semiconductor) image sensor, etc.
- a transfer electrode made of polysilicon or the like.
- a configuration having a condensing means for example, a microlens or the like; the same applies hereinafter
- a configuration having a condensing means on the color filter and the like.
- an ultraviolet absorbing layer may be provided in the structure of the solid-state image sensor to improve the light resistance.
- the image pickup device provided with the solid-state image pickup device of the present invention can be used not only for digital cameras and electronic devices having an image pickup function (mobile phones and the like), but also for in-vehicle cameras and surveillance cameras.
- the image display device of the present invention has the color filter of the present invention described above.
- Examples of the image display device include a liquid crystal display device and an organic electroluminescence display device.
- the liquid crystal display device is described in, for example, “Next Generation Liquid Crystal Display Technology (edited by Tatsuo Uchida, Kogyo Chosakai Co., Ltd., published in 1994)”.
- the liquid crystal display device to which the present invention can be applied is not particularly limited, and can be applied to, for example, various types of liquid crystal display devices described in the above-mentioned "next-generation liquid crystal display technology".
- composition for forming underlayer film Each material was mixed at a ratio of Formulations 1 to 5 shown below and filtered through a nylon filter (manufactured by Nippon Pole Co., Ltd.) having a pore size of 0.45 ⁇ m to prepare each underlayer film forming composition.
- the total of the resin, the polymerizable compound, the photopolymerization initiator, the surfactant, and the polymerization inhibitor is the solid content conversion value.
- the numerical value added to the main chain is the mass ratio
- the numerical value added to the side chain is the number of repeating units
- the amount of halogen in the solid content of the above tree species was 0.3% by weight for U-7, which was below the detection limit except for U-7.
- I-1 Compound with the following structure
- I-2 Irgure OXE02 (Oxime compound manufactured by BASF)
- I-3 Omnirad 2959, Omnirad 127 (manufactured by IGM Resins B.V.)
- ⁇ Manufacturing of coloring composition > -Manufacturing of dispersion-
- a mixture of 14.0 parts by mass of the pigment and the pigment derivative, 16.3 parts by mass of the dispersant, and 69.7 parts by mass of the solvent was prepared using a bead mill (zirconia beads 0.1 mm diameter).
- a dispersion was prepared by mixing and dispersing for 3 hours. Then, a dispersion treatment was performed using a high-pressure disperser NANO-3000-10 (manufactured by Nippon BEE Co., Ltd.) with a decompression mechanism under the conditions of a pressure of 2000 kg / cm3 and a flow rate of 500 g / min.
- This dispersion treatment was repeated up to a total of 10 times to obtain a dispersion liquid.
- the materials shown in the table below were used for the pigments, pigment derivatives, dispersants, and solvents.
- the mixing ratio of each material in the table below is a value in terms of solid content.
- (Dispersant) B-1 30% by mass PGMEA solution of resin B-1 synthesized by the following method 1-thioglycerol 108 parts by mass, pyromellitic acid anhydride 174 parts by mass, methoxypropyl acetate 650 parts by mass, monobutyltin oxide 0 as a catalyst .2 parts by mass was charged in a reaction vessel, the atmosphere gas was replaced with nitrogen gas, and then the reaction was carried out at 120 ° C. for 5 hours (first step). By measuring the acid value, it was confirmed that 95% or more of the acid anhydride was half-esterified.
- the compound obtained in the first step is 160 parts by mass in terms of solid content, 200 parts by mass of 2-hydroxypropyl methacrylate, 200 parts by mass of ethyl acrylate, 150 parts by mass of t-butyl acrylate, and 200 parts by mass of 2-methoxyethyl acrylate.
- 200 parts by mass of methyl acrylate, 50 parts by mass of methacrylic acid, and 663 parts by mass of PGMEA are charged in the reaction vessel, and the inside of the reaction vessel is heated to 80 ° C. .2 parts by mass was added and reacted for 12 hours (second step). It was confirmed by solid content measurement that 95% had reacted.
- Resin having the following structure (the numerical value added to the main chain is the molar ratio, and the numerical value added to the side chain is the number of repeating units. Resin having an acid group, weight average molecular weight 24000, acid value 52. 5 mgKOH / g) 30 mass% PGMEA solution
- Resin having the following structure (the numerical value added to the main chain is the molar ratio, and the numerical value added to the side chain is the number of repeating units. Resin having an acid group, weight average molecular weight 18,000, acid value 82. 1 mgKOH / g) 30 mass% PGMEA solution
- Resin having the following structure (the numerical value added to the main chain is the molar ratio, and the numerical value added to the side chain is the number of repeating units. Resin having an acid group, weight average molecular weight 18,000, acid value 82. 1 mgKOH / g) 30 mass% PGMEA solution
- (resin) B-5 Resin having the following structure (the numerical value added to the main chain is the molar ratio. Resin having an acid group, weight average molecular weight 11000, acid value 69.2 mgKOH / g)
- ⁇ Test Example 1> As the support, a support (diameter 8 inches ( 203.2 mm)) made of the materials shown in the table below was used. The composition for forming an underlayer film described in the table below was applied onto this support by a spin coating method, and heated at 220 ° C. for 5 minutes using a hot plate to form the underlayer film described in the table below. The coloring composition shown in the table below was applied onto the support with the underlayer film by a spin coating method so that the film thickness after post-baking was 0.4 ⁇ m. Then, the composition layer was formed by heating at 100 ° C. for 2 minutes using a hot plate.
- an i-line stepper exposure device (FPA-3000i5 +, manufactured by Canon Inc.) was used for this composition layer, and square pixels having a side of 1.0 ⁇ m were arranged in a region of 4 mm ⁇ 3 mm on the support.
- light having a wavelength of 365 nm was irradiated with an exposure amount of 500 mJ / cm 2 for exposure.
- the composition layer after exposure was paddle-developed at 23 ° C. for 60 seconds using a 0.3% by mass aqueous solution of tetramethylammonium hydroxide. Then, it was rinsed with water in a spin shower and then washed with pure water.
- ⁇ Test Example 2> Manufacturing of supports with bulkheads-
- a positive photoresist for KrF is applied onto this partition material layer with a spin coater, and heat treatment is performed at 100 ° C. for 2 minutes to form a photoresist layer so that the film thickness is 1.0 ⁇ m. did.
- the corresponding region was exposed in a pattern with an exposure amount of 30 mJ / cm 2 using a KrF scanner, and then heat-treated at 110 ° C. for 1 minute. Then, after developing for 1 minute with a developing solution, post-baking was performed at 100 ° C. for 1 minute to remove the photoresist in the region where pixels should be formed.
- the partition wall material layer was treated under the following dry etching conditions, and when the pixel size was 1.0 ⁇ m, partition walls having a width of 0.1 ⁇ m were formed in a grid pattern with a pitch width of 1.1 ⁇ m. The width of the partition wall opening was 1.0 ⁇ m.
- partition walls having a width of 0.1 ⁇ m were formed in a grid pattern with a pitch width of 0.8 ⁇ m.
- the width of the partition wall opening was 0.7 ⁇ m.
- the pitch width of the partition wall is the sum of the width of the opening of the partition wall and the width of the partition wall.
- composition for partition walls includes 44.8 parts by mass of silica particle liquid 1, 0.2 parts by mass of a surfactant (KF-6001, Shin-Etsu Chemical Industry, silicone-based surfactant), and 1,4-butane. 8 parts by mass of diol diacetate, 43 parts by mass of propylene glycol monomethyl ether acetate (PGMEA), 2 parts by mass of methanol, 1 part by mass of ethanol, and 1 part by mass of water are mixed and manufactured by Nippon Pole.
- PGMEA propylene glycol monomethyl ether acetate
- Silica particle solution 1 PGME solution (silica particle concentration) of silica particles (beaded silica) in which a plurality of spherical silicas having an average particle diameter of 15 nm are connected in a bead shape by a metal oxide-containing silica (connecting material). It is a silica particle solution prepared by adding 3.0 g of trimethylmethoxysilane as a hydrophobic treatment agent to 100.0 g of (20% by mass) and reacting at 20 ° C. for 6 hours.
- PGME solution sica particle concentration of silica particles (beaded silica) in which a plurality of spherical silicas having an average particle diameter of 15 nm are connected in a bead shape by a metal oxide-containing silica (connecting material). It is a silica particle solution prepared by adding 3.0 g of trimethylmethoxysilane as a hydrophobic treatment agent to 100.0 g of (20% by mass) and reacting at 20
- the average particle diameter of the spherical silica was obtained by calculating the number average of the diameters corresponding to the circles in the projected images of the spherical portions of the 50 spherical silicas measured by a transmission electron microscope (TEM). .. Further, in the silica particle liquid 1, it was examined by a TEM observation method whether or not a plurality of spherical silicas contained silica particles having a shape in which a plurality of spherical silicas were connected in a bead shape.
- TEM transmission electron microscope
- the refractive index of the partition wall with respect to light having a wavelength of 300 nm was 1.26.
- the refractive index of the partition wall was measured by the following method. That is, the composition for partition walls is applied onto a quartz glass substrate using a spin coater (manufactured by Mikasa Co., Ltd.) to form a coating film, and then heated at 100 ° C. for 120 seconds using a hot plate (pre-bake). ), And then heated (post-baked) at 200 ° C. for 300 seconds using a hot plate to form a film having a thickness of 0.3 ⁇ m.
- the refractive index of the obtained film was measured with respect to light having a wavelength of 300 nm using ellipsometry VUV-VASE (manufactured by JA Woolam Japan).
- W-1 A compound having the following structure (weight average molecular weight 14000). In the following formula,% indicating the ratio of the repeating unit is mol%.
- W-2 FZ-2122 (Silicone-based surfactant manufactured by Toray Dow Corning Co., Ltd.)
- W-3 BYK-322 (Silicone-based surfactant manufactured by Big Chemie)
- W-4 BYK-323 (Silicone-based surfactant manufactured by Big Chemie)
- W-6 BYK-3760 (Silicone-based surfactant manufactured by Big Chemie)
- W-7 BYK-UV3510 (Silicone-based surfactant manufactured by Big Chemie)
- W-8 KF-6001 (Shin-Etsu Chemical Co., Ltd., Silicone-based surfactant)
- W-10 Megafuck F-554 (DIC Corporation, fluorine-based surfactant)
- W-11 Megafax
- the water droplets were blown off with high-pressure air, the support was naturally dried, and then post-baked at 200 ° C. for 300 seconds using a hot plate to form green pixels.
- the Blue composition 1 was applied onto the support on which the green pixels were formed by a spin coating method so that the film thickness after post-baking was 0.4 ⁇ m.
- the composition layer was formed by heating at 100 ° C. for 2 minutes using a hot plate.
- a KrF scanner exposure apparatus FPA-6300ES6a, manufactured by Canon Inc.
- the Red composition 1 was applied onto the support on which the green pixels and the blue pixels were formed by a spin coating method so that the film thickness after post-baking was 0.4 ⁇ m. Then, the composition layer was formed by heating at 100 ° C. for 2 minutes using a hot plate. Next, a KrF scanner exposure apparatus (FPA-6300ES6a, manufactured by Canon Inc.) was used for this composition layer, and square patterns with a side of 0.7 ⁇ m were arranged in a 4 mm ⁇ 3 mm region on the support. Through the mask pattern, light having a wavelength of 248 nm was irradiated with an exposure amount of 200 mJ / cm 2 for exposure. The composition layer after exposure was paddle-developed at 23 ° C.
- FPA-6300ES6a manufactured by Canon Inc.
- the composition 1 for forming an underlayer film was applied onto a silicon wafer on which green pixels were formed by a spin coating method, and heated at 220 ° C. for 5 minutes using a hot plate to form an underlayer film having a film thickness of 3 nm. Further, Blue Composition 1 was applied by a spin coating method so that the film thickness after post-baking was 0.4 ⁇ m. Then, the composition layer was formed by heating at 100 ° C. for 2 minutes using a hot plate.
- a KrF scanner exposure apparatus (FPA-6300ES6a, manufactured by Canon Inc.) was used for this composition layer, and square patterns with a side of 0.7 ⁇ m were arranged in a 4 mm ⁇ 3 mm region on the support. Through the mask pattern, light having a wavelength of 248 nm was irradiated with an exposure amount of 200 mJ / cm 2 for exposure.
- the composition layer after exposure was paddle-developed at 23 ° C. for 60 seconds using a 0.3% by mass aqueous solution of tetramethylammonium hydroxide. Then, it was rinsed with water in a spin shower and then washed with pure water.
- post-baking was performed at 200 ° C. for 300 seconds using a hot plate to form blue pixels.
- the composition 1 for forming an underlayer film was applied on a support on which green pixels and blue pixels were formed by a spin coating method, and heated at 220 ° C. for 5 minutes using a hot plate to form an underlayer film having a film thickness of 3 nm. .. Further, Red Composition 1 was applied by a spin coating method so that the film thickness after post-baking was 0.4 ⁇ m. Then, the composition layer was formed by heating at 100 ° C. for 2 minutes using a hot plate.
- a KrF scanner exposure apparatus (FPA-6300ES6a, manufactured by Canon Inc.) was used for this composition layer, and square patterns with a side of 0.7 ⁇ m were arranged in a 4 mm ⁇ 3 mm region on the support. Through the mask pattern, light having a wavelength of 248 nm was irradiated with an exposure amount of 200 mJ / cm 2 for exposure.
- the composition layer after exposure was paddle-developed at 23 ° C. for 60 seconds using a 0.3% by mass aqueous solution of tetramethylammonium hydroxide. Then, it was rinsed with water in a spin shower and then washed with pure water.
- Support 11 Partition 31 to 33: Pixel
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Abstract
Description
<1> カラーフィルタの下層膜形成用組成物であって、
樹脂Aと、溶剤Bとを含み、
上記樹脂Aは、アルキレンオキシ構造を有する樹脂a-1を含み、
上記下層膜形成用組成物の全固形分中における上記樹脂a-1の含有量が50質量%以上であり、
上記下層膜形成用組成物の固形分濃度が1質量%以下である、下層膜形成用組成物。
<2> 上記下層膜形成用組成物の全固形分中における上記樹脂Aの含有量が50質量%以上である、<1>に記載の下層膜形成用組成物。
<3> 上記樹脂a-1が有するアルキレンオキシ構造は、式(AO-1)で表される構造である、<1>または<2>に記載の下層膜形成用組成物;
-(R1-O)n- ・・・(AO-1)
式中、R1はアルキレン基を表し、nは2以上の数を表す。
<4> 上記樹脂a-1の酸価が40mgKOH/g以下である、<1>~<3>のいずれか1つに記載の下層膜形成用組成物。
<5> 上記樹脂a-1は重合性基を含む、<1>~<4>のいずれか1つに記載の下層膜形成用組成物。
<6> 上記樹脂a-1は、アルキレンオキシ構造を含む基を有する繰り返し単位と、重合性基を有する繰り返し単位とを含む、<1>~<4>のいずれか1つに記載の下層膜形成用組成物。
<7> 上記重合性基がエチレン性不飽和結合含有基または環状エーテル基である、<5>または<6>に記載の下層膜形成用組成物。
<8> さらに界面活性剤を含む、<1>~<7>のいずれか1つに記載の下層膜形成用組成物。
<9> 更に、上記樹脂A以外の重合性化合物を含む、<1>~<8>のいずれか1つに記載の下層膜形成用組成物。
<10> 上記下層膜形成用組成物の全固形分中における上記樹脂Aと上記重合性化合物の合計の含有量が70~100質量%である、<9>に記載の下層膜形成用組成物。
<11> 上記重合性化合物は、エチレン性不飽和結合含有基を有する化合物を含み、
上記下層膜形成用組成物は、更に光重合開始剤を含む、<9>または<10>に記載の下層膜形成用組成物。
<12> 支持体と、支持体上に形成された下層膜と、上記下層膜上に形成された画素とを有するカラーフィルタであって、
上記下層膜は、アルキレンオキシ構造を有する樹脂a-1を50質量%以上含み、
上記下層膜の膜厚が30nm以下である、
カラーフィルタ。
<13> 上記支持体の表面に隔壁が形成されており、
上記支持体上であって、上記隔壁で区画された領域に上記下層膜が形成されており、
上記下層膜上に上記画素が形成されている、<12>に記載のカラーフィルタ。
<14> 支持体上に<1>~<10>のいずれか1つに記載の下層膜形成用組成物を適用して下層膜を形成する工程と、
上記下層膜上に画素を形成する工程と、を含み、
上記画素を形成する工程は、画素形成用組成物を適用して画素形成用組成物層を形成する工程と、上記画素形成用組成物層をパターン状に露光する工程と、上記画素形成用組成物層の未露光部を現像除去する工程と、を含むカラーフィルタの製造方法。
<15> 上記露光する工程では、上記画素形成用組成物層に波長300nm以下の光を照射して露光する、<14>に記載のカラーフィルタの製造方法。
<16> 下層膜を形成する工程と上記画素を形成する工程とをそれぞれ交互に2回以上行い、2種以上の画素を形成する、<14>または<15>に記載のカラーフィルタの製造方法。
<17> <12>または<13>に記載のカラーフィルタを有する固体撮像素子。
<18> <12>または<13>に記載のカラーフィルタを有する画像表示装置。
本明細書における基(原子団)の表記において、置換および無置換を記していない表記は、置換基を有さない基(原子団)と共に置換基を有する基(原子団)をも包含するものである。例えば、「アルキル基」とは、置換基を有さないアルキル基(無置換アルキル基)のみならず、置換基を有するアルキル基(置換アルキル基)をも包含するものである。
本明細書において「露光」とは、特に断らない限り、光を用いた露光のみならず、電子線、イオンビーム等の粒子線を用いた描画も露光に含める。また、露光に用いられる光としては、一般的に、水銀灯の輝線スペクトル、エキシマレーザーに代表される遠紫外線、極紫外線(EUV光)、X線、電子線等の活性光線または放射線が挙げられる。
本明細書において「~」を用いて表される数値範囲は、「~」の前後に記載される数値を下限値および上限値として含む範囲を意味する。
本明細書において、全固形分とは、組成物の全成分から溶剤を除いた成分の合計質量をいう。
本明細書において、「(メタ)アクリレート」は、アクリレートおよびメタクリレートの双方、または、いずれかを表し、「(メタ)アクリル」は、アクリルおよびメタクリルの双方、または、いずれかを表し、「(メタ)アリル」は、アリルおよびメタリルの双方、または、いずれかを表し、「(メタ)アクリロイル」は、アクリロイルおよびメタクリロイルの双方、または、いずれかを表す。
本明細書において、構造式中のMeはメチル基を表し、Etはエチル基を表し、Buはブチル基を表し、Phはフェニル基を表す。
本明細書において「工程」との語は、独立した工程だけではなく、他の工程と明確に区別できない場合であってもその工程の所期の作用が達成されれば、本用語に含まれる。
本明細書において、重量平均分子量(Mw)および数平均分子量(Mn)は、ゲルパーミエーションクロマトグラフィ(GPC)により測定したポリスチレン換算値として定義される。
本明細書において、名称の前、又は名称の後に付記される記号(例えば、A、Bなど)は、構成要素を区別するために使用する用語であり、構成要素の種類、構成要素の数、及び構成要素の優劣を制限するものではない。
本発明のカラーフィルタの下層膜形成用組成物は、
樹脂Aと、溶剤Bとを含み、
樹脂Aは、アルキレンオキシ構造を有する樹脂a-1を含み、
下層膜形成用組成物の全固形分中における樹脂a-1の含有量が50質量%以上であり、
下層膜形成用組成物の固形分濃度が1質量%以下であることを特徴とする。
また、この下層膜形成用組成物は固形分濃度が1質量%以下であるので、支持体の表面に段差があったり、隔壁が設けられていても、支持体表面に下層膜を形成することができる。
本発明の下層膜形成用組成物は樹脂A(以下、樹脂と記す)を含む。本発明の下層膜形成用組成物に含まれる樹脂は、アルキレンオキシ構造を有する樹脂a-1(以下、特定樹脂ともいう)を含む。
特定樹脂が有するアルキレンオキシ構造としては、式(AO-1)で表される構造であることが好ましい。
-(R1-O)n- ・・・(AO-1)
式中、R1はアルキレン基を表し、nは2以上の数を表す。
-(R1-O)n-W1 ・・・(AO-2)
式中、R1はアルキレン基を表し、W1は水素原子または置換基を表し、nは2以上の数を表す。
式(AO-2)のW1は置換基であることが好ましい。置換基としては上述した置換基が挙げられる。
また、特定樹脂の全繰り返し単位中におけるアルキレンオキシ構造を有する基を含む繰り返し単位と重合性基を有する繰り返し単位との合計の含有量は、40~100質量%であることが好ましく、80~100質量%であることがより好ましく、90~100質量%であることが更に好ましい。
また、特定樹脂におけるアルキレンオキシ構造を有する基を含む繰り返し単位と重合性基を有する繰り返し単位との割合は、アルキレンオキシ構造を有する基を含む繰り返し単位の100質量部に対して、重合性基を有する繰り返し単位が1~200質量部であることが好ましく、2~100質量部であることがより好ましく、5~50質量部であることが更に好ましい。
特定樹脂のC=C価[mmol/g]=(低分子成分(a)の含有量[ppm]/低分子成分(a)の分子量[g/mol])/(特定樹脂の秤量値[g]×(試料中の特定樹脂の濃度[質量%]/100)×10)
本発明の下層膜形成用組成物は、上述した特定樹脂の他に、アルキレンオキシ構造を含まない樹脂(以下、他の樹脂ともいう)をさらに含有することができる。他の樹脂としては、特に限定はなく、(メタ)アクリル樹脂、エン・チオール樹脂、ポリカーボネート樹脂、ポリエーテル樹脂、ポリアリレート樹脂、ポリスルホン樹脂、ポリエーテルスルホン樹脂、ポリフェニレン樹脂、ポリアリーレンエーテルホスフィンオキシド樹脂、ポリイミド樹脂、ポリアミドイミド樹脂、ポリオレフィン樹脂、環状オレフィン樹脂、ポリエステル樹脂、スチレン樹脂などが挙げられる。
樹脂は、1種のみを用いてもよいし、2種類以上を組み合わせて用いてもよい。2種以上を組み合わせて用いる場合は、それらの合計量を上記範囲とする。
本発明の下層膜形成用組成物は、溶剤B(以下、溶剤と記す)を含む。溶剤は有機溶剤が好ましい。溶剤は、各成分の溶解性や下層膜形成用組成物の塗布性を満足すれば特に制限はない。有機溶剤としては、エステル系溶剤、ケトン系溶剤、アルコール系溶剤、アミド系溶剤、エーテル系溶剤、炭化水素系溶剤などが挙げられる。これらの詳細については、国際公開第2015/166779号の段落番号0223を参酌でき、この内容は本明細書に組み込まれる。また、環状アルキル基が置換したエステル系溶剤、環状アルキル基が置換したケトン系溶剤も好ましく用いることもできる。
下層膜形成用組成物は、界面活性剤を含有することができる。界面活性剤としては、フッ素系界面活性剤、ノニオン系界面活性剤、カチオン系界面活性剤、アニオン系界面活性剤、シリコーン系界面活性剤などの各種界面活性剤を使用することができる。界面活性剤については、国際公開第2015/166779号の段落番号0238~0245に記載された界面活性剤が挙げられ、この内容は本明細書に組み込まれる。
また、界面活性剤の含有量は、下層膜形成用組成物の全質量に対して0.0001~0.1質量%であることが好ましい。下限は、0.0005質量%以上が好ましく、0.001質量%以上がより好ましい。上限は、0.05質量%以下が好ましく、0.01質量%以下がより好ましい。
界面活性剤は、1種のみを用いてもよいし、2種類以上を組み合わせて用いてもよい。2種以上を組み合わせて用いる場合は、それらの合計量を上記範囲とする。
下層膜形成用組成物は、上述した樹脂の他に、更に重合性化合物を含有することができる。重合性化合物としては、エチレン性不飽和結合含有基を有する化合物、環状エーテル基を有する化合物等が挙げられ、エチレン性不飽和結合含有基を有する化合物であることが好ましい。エチレン性不飽和結合含有基としては、ビニル基、(メタ)アリル基、(メタ)アクリロイル基などが挙げられる。環状エーテル基としては、エポキシ基、オキセタニル基などが挙げられる。エチレン性不飽和結合含有基を有する化合物はラジカル重合性化合物として好ましく用いることができる。
また、重合性化合物の含有量は、下層膜形成用組成物の全質量に対して0.003~0.5質量%であることが好ましい。下限は、0.01質量%以上であることが好ましく、0.03質量%以上であることがより好ましい。上限は0.4質量%以下であることが好ましく、0.3質量%以下であることがより好ましい。
また、下層膜形成用組成物の全固形分中における樹脂と重合性化合物の合計の含有量は70~100質量%であることが好ましい。下限は、80質量%以上であることが好ましく、90質量%以上であることがより好ましい。上限は、100質量%以下とすることもでき、95質量%以下とすることもできる。
また、樹脂と重合性化合物の含有量は、下層膜形成用組成物の全質量に対して0.007~1質量%であることが好ましい。下限は、0.035質量%以上であることが好ましく、0.07質量%以上であることがより好ましい。上限は0.7質量%以下であることが好ましく、0.5質量%以下であることがより好ましい。
重合性化合物は、1種のみを用いてもよいし、2種類以上を組み合わせて用いてもよい。2種以上を組み合わせて用いる場合は、それらの合計量を上記範囲とする。
下層膜形成用組成物は光重合開始剤を含有することができる。光重合開始剤としては、特に制限はなく、公知の光重合開始剤の中から適宜選択することができる。例えば、紫外線領域から可視領域の光線に対して感光性を有する化合物が好ましい。光重合開始剤は、光ラジカル重合開始剤であることが好ましい。
光重合開始剤は、1種のみを用いてもよいし、2種類以上を組み合わせて用いてもよい。2種以上を組み合わせて用いる場合は、それらの合計量を上記範囲とする。
下層膜形成用組成物は、重合禁止剤を含有することができる。重合禁止剤としては、ハイドロキノン、p-メトキシフェノール、ジ-tert-ブチル-p-クレゾール、ピロガロール、tert-ブチルカテコール、ベンゾキノン、4,4’-チオビス(3-メチル-6-tert-ブチルフェノール)、2,2’-メチレンビス(4-メチル-6-t-ブチルフェノール)、N-ニトロソフェニルヒドロキシアミン塩(アンモニウム塩、第一セリウム塩等)が挙げられる。中でも、p-メトキシフェノールが好ましい。
また、重合禁止剤の含有量は、下層膜形成用組成物の全質量に対して0.00001~0.1質量%であることが好ましい。下限は、0.0001質量%以上が好ましく、0.001質量%以上がより好ましい。上限は、0.05質量%以下が好ましく、0.01質量%以下がより好ましい。
重合禁止剤は、1種のみを用いてもよいし、2種類以上を組み合わせて用いてもよい。2種以上を組み合わせて用いる場合は、それらの合計量を上記範囲とする。
下層膜形成用組成物は、更に、紫外線吸収剤、酸化防止剤、熱酸発生剤等の他の添加剤を更に含んでもよいが、これらの他の添加剤の含有量は、下層膜形成用組成物の全固形分に対して1質量%以下であることが好ましく、0.1質量%以下であることがより好ましく、含有しないことがより好ましい。
次に、本発明のカラーフィルタについて説明する。
本発明のカラーフィルタは、
支持体と、支持体上に形成された下層膜と、下層膜上に形成された画素とを有し、
上記下層膜は、アルキレンオキシ構造を有する樹脂a-1を50質量%以上含み、
上記下層膜の膜厚が30nm以下である、ことを特徴とする。
D2=2720/S ・・・(1)
式中、D2は数珠状シリカの平均粒子径であって、単位はnmであり、Sは、窒素吸着法により測定された数珠状シリカの比表面積であって、単位はm2/gである。
支持体上であって、隔壁で区画された領域に下層膜が形成されており、
下層膜上に画素が形成されている態様のカラーフィルタが挙げられる。このような態様のカラーフィルタとしては、図3に示す態様のカラーフィルタが挙げられる。図3は、図1、2に示す構造の隔壁を有する支持体を用いたカラーフィルタの一実施形態を示す図であって、同支持体の真上方向からみた平面図であり、符号11は隔壁であり、符号31~33は画素である。
次に、本発明のカラーフィルタの製造方法について説明する。
画素形成用組成物層を形成する工程では、下層膜上に画素形成用組成物を適用して画素形成用組成物層を形成する。画素形成用組成物の塗布方法としては、公知の方法を用いることができる。例えば、滴下法(ドロップキャスト);スリットコート法;スプレー法;ロールコート法;回転塗布法(スピンコーティング);流延塗布法;スリットアンドスピン法;プリウェット法(例えば、特開2009-145395号公報に記載されている方法);インクジェット(例えば、オンデマンド方式、ピエゾ方式、サーマル方式)、ノズルジェット等の吐出系印刷、フレキソ印刷、スクリーン印刷、グラビア印刷、反転オフセット印刷、メタルマスク印刷法などの各種印刷法;金型等を用いた転写法;ナノインプリント法などが挙げられる。インクジェットでの適用方法としては、特に限定されず、例えば「広がる・使えるインクジェット-特許に見る無限の可能性-、2005年2月発行、住ベテクノリサーチ」に示された方法(特に115ページ~133ページ)や、特開2003-262716号公報、特開2003-185831号公報、特開2003-261827号公報、特開2012-126830号公報、特開2006-169325号公報などに記載の方法が挙げられる。また、着色組成物の塗布方法については、国際公開第2017/030174号、国際公開第2017/018419号の記載を参酌でき、これらの内容は本明細書に組み込まれる。
露光する工程では、下層膜上に形成した画素形成用組成物層をパターン状に露光する。例えば、画素形成用組成物層に対し、ステッパー露光機やスキャナ露光機などを用いて、所定のマスクパターンを有するマスクを介して露光することで、パターン状に露光することができる。これにより、露光部分を硬化することができる。
次に、画素形成用組成物層の未露光部を現像除去する。画素形成用組成物層の未露光部の現像除去は、現像液を用いて行うことができる。これにより、露光工程における未露光部の画素形成用組成物層が現像液に溶出し、光硬化した部分だけが残り、画素が形成される。現像液の温度は、例えば、20~30℃が好ましい。現像時間は、20~180秒が好ましい。また、残渣除去性を向上するため、現像液を60秒ごとに振り切り、さらに新たに現像液を供給する工程を数回繰り返してもよい。
C.I.Pigment Orange 2,5,13,16,17:1,31,34,36,38,43,46,48,49,51,52,55,59,60,61,62,64,71,73等(以上、オレンジ色顔料)、
C.I.Pigment Red 1,2,3,4,5,6,7,9,10,14,17,22,23,31,38,41,48:1,48:2,48:3,48:4,49,49:1,49:2,52:1,52:2,53:1,57:1,60:1,63:1,66,67,81:1,81:2,81:3,83,88,90,105,112,119,122,123,144,146,149,150,155,166,168,169,170,171,172,175,176,177,178,179,184,185,187,188,190,200,202,206,207,208,209,210,216,220,224,226,242,246,254,255,264,269,270,272,279,291,294(キサンテン系、Organo Ultramarine、Bluish Red),295(モノアゾ系),296(ジアゾ系),297(アミノケトン系)等(以上、赤色顔料)、
C.I.Pigment Green 7,10,36,37,58,59,62,63,64(フタロシアニン系),65(フタロシアニン系),66(フタロシアニン系)等(以上、緑色顔料)、
C.I.Pigment Violet 1,19,23,27,32,37,42,60(トリアリールメタン系),61(キサンテン系)等(以上、紫色顔料)、
C.I.Pigment Blue 1,2,15,15:1,15:2,15:3,15:4,15:6,16,22,29,60,64,66,79,80,87(モノアゾ系),88(メチン系)等(以上、青色顔料)。
本発明の固体撮像素子は、上述した本発明のカラーフィルタを有する。固体撮像素子の構成としては、本発明の構造体を備え、固体撮像素子として機能する構成であれば特に限定はないが、例えば、以下のような構成が挙げられる。
本発明の画像表示装置は、上述した本発明のカラーフィルタを有する。画像表示装置としては、液晶表示装置や有機エレクトロルミネッセンス表示装置などが挙げられる。画像表示装置の定義や各画像表示装置の詳細については、例えば「電子ディスプレイデバイス(佐々木昭夫著、(株)工業調査会、1990年発行)」、「ディスプレイデバイス(伊吹順章著、産業図書(株)平成元年発行)」などに記載されている。また、液晶表示装置については、例えば「次世代液晶ディスプレイ技術(内田龍男編集、(株)工業調査会、1994年発行)」に記載されている。本発明が適用できる液晶表示装置に特に制限はなく、例えば、上記の「次世代液晶ディスプレイ技術」に記載されている色々な方式の液晶表示装置に適用できる。
各素材を、以下に示す処方1から5の割合で混合し、孔径0.45μmのナイロン製フィルタ(日本ポール(株)製)でろ過して各下層膜形成用組成物を製造した。なお、樹脂、重合性化合物、光重合開始剤、界面活性剤、重合禁止剤の合計は固形分換算値である。
樹脂と重合性化合物と光重合開始剤と界面活性剤と重合禁止剤の合計 ・・・0.3質量部
溶剤 ・・・99.7質量部
樹脂と重合性化合物と光重合開始剤と界面活性剤と重合禁止剤の合計 ・・・0.1質量部
溶剤 ・・・99.9質量部
樹脂と重合性化合物と光重合開始剤と界面活性剤と重合禁止剤の合計 ・・・0.5質量部
溶剤 ・・・99.5質量部
樹脂と重合性化合物と光重合開始剤と界面活性剤と重合禁止剤の合計 ・・・0.7質量部
溶剤 ・・・99.3質量部
樹脂と重合性化合物と光重合開始剤と界面活性剤と重合禁止剤の合計 ・・・0.9質量部
溶剤 ・・・99.1質量部
M-1:KAYARAD DPHA(日本化薬(株)製、エチレン性不飽和結合含有基を有する化合物)
M-2:下記構造の化合物(エチレン性不飽和結合含有基を有する化合物)
I-1:下記構造の化合物
I-3:Omnirad 2959、Omnirad 127(IGM Resins B.V.社製)
W-5:BYK-330(ビックケミー社製、シリコーン系界面活性剤)
W-8:KF-6001(信越化学工業、シリコーン系界面活性剤)
In-1:p-メトキシフェノール
S-1:プロピレングリコールモノメチルエーテルアセテート(PGMEA)
S-2:3-メチルシクロヘキサノン
S-3:シクロペンタノン
S-4:ジアセトンアルコール
S-5:アニソール
S-6:プロピレングリコールモノメチルエーテル(PGME)
-分散液の製造-
顔料と顔料誘導体とを合計で14.0質量部と、分散剤を16.3質量部と、溶剤を69.7質量部との混合液を、ビーズミル(ジルコニアビーズ0.1mm径)を用いて3時間混合および分散して、分散液を調製した。その後、減圧機構付き高圧分散機NANO-3000-10(日本ビーイーイー(株)製)を用いて、圧力2000kg/cm3および流量500g/minの条件の下、分散処理を行なった。この分散処理を全10回まで繰り返して分散液を得た。顔料、顔料誘導体、分散剤、および溶剤はそれぞれ下記表に示す素材を用いた。また、下記表中における各素材の混合比率は固形分換算での値である。
P-1:C.I.Pigment Green58(緑色顔料)
P-2:C.I.Pigment Green36(緑色顔料)
P-3:C.I.Pigment Yellow185(黄色顔料)
P-4:C.I.Pigment Yellow150(黄色顔料)
P-5:C.I.Pigment Red272(赤色顔料)
P-6:C.I.Pigment Red254(赤色顔料)
P-7:C.I.Pigment Yellow139(黄色顔料)
P-8:C.I.Pigment Blue15:6(青色顔料)
P-9:C.I.Pigment Violet23(紫色顔料)
B-1:以下の方法で合成した樹脂B-1の30質量%PGMEA溶液
1-チオグリセロール108質量部、ピロメリット酸無水物174質量部、メトキシプロピルアセテート650質量部、触媒としてモノブチルスズオキシド0.2質量部を反応容器に仕込み、雰囲気ガスを窒素ガスで置換した後、120℃で5時間反応させた(第一工程)。酸価の測定で95%以上の酸無水物がハーフエステル化していることを確認した。次に、第一工程で得られた化合物を固形分換算で160質量部、2-ヒドロキシプロピルメタクリレート200質量部、エチルアクリレート200質量部、t-ブチルアクリレート150質量部、2-メトキシエチルアクリレート200質量部、メチルアクリレート200質量部、メタクリル酸50質量部、PGMEA663質量部を反応容器に仕込み、反応容器内を80℃に加熱して、2,2’-アゾビス(2,4-ジメチルバレロニトリル)1.2質量部を添加し、12時間反応させた(第二工程)。固形分測定により95%が反応したことを確認した。最後に、第二工程で得られた化合物の50質量%PGMEA溶液500質量部、2-メタクリロイルオキシエチルイソシアネート(MOI)27.0質量部、ヒドロキノン0.1質量部を反応容器に仕込み、イソシアネート基に基づく2270cm-1のピークの消失を確認するまで反応を行った(第三工程)。ピーク消失の確認後、反応溶液を冷却して、酸価68mgKOH/g、エチレン性不飽和結合基価0.62mmol/g、重量平均分子量13000の下記構造の樹脂B-1(酸基を有する樹脂)を得た。
S-1~S-5:上述した溶剤S-1~S-5
各素材を、以下に示す処方1または2の割合で混合し、孔径0.45μmのナイロン製フィルタ(日本ポール(株)製)でろ過して着色組成物を製造した。
下記表に記載の分散液 ・・・77.1質量部
下記表に記載の重合性化合物 ・・・0.9質量部
樹脂B-5の30質量%PGMEA溶液 ・・・5.9質量部
下記表に記載の光重合開始剤 ・・・0.7質量部
下記表に記載の界面活性剤 ・・・0.02質量部
重合禁止剤(p-メトキシフェノール) ・・・0.0002質量部
溶剤(PGMEA) ・・・15.3質量部
下記表に記載の分散液 ・・・83.6質量部
下記表に記載の重合性化合物 ・・・0.7質量部
樹脂B-5の30質量%PGMEA溶液 ・・・1.3質量部
下記表に記載の光重合開始剤 ・・・1.1質量部
下記表に記載の界面活性剤 ・・・0.02質量部
重合禁止剤(p-メトキシフェノール) ・・・0.0002質量部
溶剤(PGMEA) ・・・13.3質量部
G-1~G-4、R-1~R-4、B-1~B-4:上述した分散液G-1~G-4、R-1~R-4、B-1~B-4
M-1~M-4:上述した重合性化合物M-1~M-4
I-1、I-2:上述した光重合開始剤I-1、I-2
W-5:BYK-330(ビックケミー社製、シリコーン系界面活性剤)
支持体として、下記表に記載の材質の支持体(直径8インチ(=203.2mm))を用いた。この支持体上に下記表に記載の下層膜形成用組成物をスピンコート法で塗布し、ホットプレートを用いて220℃で5分加熱して下記表に記載の下層膜を形成した。この下層膜付きの支持体上に、下記表に記載の着色組成物をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、i線ステッパー露光装置(FPA-3000i5+、キヤノン(株)製)を使用し、一辺1.0μmの正方ピクセルがそれぞれ支持体上の4mm×3mmの領域に配列されたマスクパターンを介して、365nmの波長の光を500mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーで飛ばし、シリコンウエハを自然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、画素を形成した。得られた画素について、測長SEM「S-9260A」(日立ハイテクノロジーズ(株)製)を用いて画素と画素の周囲8画素分(未露光の下地部分)を含む画像を取得し、画像解析により下地部分の残渣占有面積を算出し、以下の基準で残渣を評価した。0%の場合残渣が全くないことを意味し、100%の場合全て残渣で埋め尽くされていることを意味する。以下の評価基準で「5」が、最も優れている。
〔評価基準〕
1:51%~100%
2:31%~50%
3:11%~30%
4:4%~10%
5:0%~3%
-隔壁を有する支持体の製造-
直径8インチ(=203.2mm)のシリコンウエハ上に隔壁用組成物をポストベーク後の膜厚が0.4μmとなるようにスピンコート法で塗布した後、ホットプレートを用いて100℃で120秒加熱した後、200℃で300秒加熱して隔壁材料層を形成した。
この隔壁材料層上に、KrF用ポジ型フォトレジストをスピンコーターにて塗布し、100℃で2分間の加熱処理を行い、膜厚が1.0μmの厚さになるようにフォトレジスト層を形成した。次に対応する領域を、KrFスキャナを用いて30mJ/cm2の露光量でパターン状に露光した後、110℃で1分間の加熱処理を行った。その後、現像液で1分間の現像処理した後、100℃で1分間のポストベーク処理を行い、画素を形成すべき領域のフォトレジストを除去した。次いで、下記のドライエッチング条件で隔壁材料層の処理を行い、画素サイズが1.0μmの場合は、幅0.1μmの隔壁を、ピッチ幅1.1μmで格子状に形成した。隔壁開口部の幅は1.0μmであった。また、画素サイズが0.7μmの場合は、幅0.1μmの隔壁を、ピッチ幅0.8μmで格子状に形成した。隔壁開口部の幅は0.7μmであった。なお、隔壁のピッチ幅は、隔壁の開口部の幅と隔壁の幅との合計のことである。
隔壁用組成物には、シリカ粒子液1を44.8質量部と、界面活性剤(KF-6001、信越化学工業、シリコーン系界面活性剤)を0.2質量部と、1,4-ブタンジオールジアセテートを8質量部と、プロピレングリコールモノメチルエーテルアセテート(PGMEA)を43質量部と、メタノールを2質量部と、エタノールを1質量部と、水を1質量部とを混合し、日本ポール製DFA4201NIEY(0.45μmナイロンフィルター)を用いてろ過を行って製造した隔壁用組成物を用いたい。
・シリカ粒子液1:平均粒子径15nmの球状シリカの複数個が金属酸化物含有シリカ(連結材)によって数珠状に連結された形状のシリカ粒子(数珠状シリカ)のPGME)溶液(シリカ粒子濃度20質量%)の100.0gに疎水化処理剤としてトリメチルメトキシシランの3.0gを添加し、20℃で6時間反応させて調製したシリカ粒子液である。なお、シリカ粒子液1において、球状シリカの平均粒子径は、透過型電子顕微鏡(TEM)によって測定した50個の球状シリカの球状部分の投影像における円相当直径の数平均を算出して求めた。また、シリカ粒子液1において、TEM観察の方法で、複数個の球状シリカが数珠状に連結された形状のシリカ粒子を含むものであるかどうか調べた。
ドライエッチング条件は以下の通りである。
使用装置:日立ハイテクノロジーズ社製 U-621
圧力:2.0Pa
使用ガス:Ar/C4F6/O2=1000/20/50mL/min
処理温度:20℃
ソースパワー:500W
上部バイアス/電極バイアス=500/1000W
処理時間:220sec
上記の隔壁を形成した支持体上に下記表に記載の下層膜形成用組成物をスピンコート法で塗布し、ホットプレートを用いて220℃で5分加熱して下記表に記載の下層膜を形成した。この下層膜付きの支持体を用いて試験例1と同様にして画素を形成し、試験例1と同様の手法で残渣を評価した。
W-1:下記構造の化合物(重量平均分子量14000)。下記の式中、繰り返し単位の割合を示す%はモル%である。
W-3:BYK-322(ビックケミー社製、シリコーン系界面活性剤)
W-4:BYK-323(ビックケミー社製、シリコーン系界面活性剤)
W-6:BYK-3760(ビックケミー社製、シリコーン系界面活性剤)
W-7:BYK-UV3510(ビックケミー社製、シリコーン系界面活性剤)
W-8:KF-6001(信越化学工業、シリコーン系界面活性剤)
W-9:メガファックF-477(DIC(株)、フッ素系界面活性剤)
W-10:メガファックF-554(DIC(株)、フッ素系界面活性剤)
W-11:メガファックF-555-A(DIC(株)、フッ素系界面活性剤)
W-12:メガファックF-556(DIC(株)、フッ素系界面活性剤)
W-13:メガファックF-557(DIC(株)、フッ素系界面活性剤)
W-14:メガファックF-558(DIC(株)、フッ素系界面活性剤)
W-15:メガファックF-559(DIC(株)、フッ素系界面活性剤)
W-16:メガファックF-560(DIC(株)、フッ素系界面活性剤)
W-17:メガファックF-561(DIC(株)、フッ素系界面活性剤)
W-18:メガファックF-563(DIC(株)、フッ素系界面活性剤)
W-19:メガファックF-565(DIC(株)、フッ素系界面活性剤)
W-20:メガファックF-568(DIC(株)、フッ素系界面活性剤)
W-21:メガファックF-575(DIC(株)、フッ素系界面活性剤)
W-22:メガファックR-01(DIC(株)、フッ素系界面活性剤)
W-23:メガファックR-40(DIC(株)、フッ素系界面活性剤)
W-24:メガファックR-40-LM(DIC(株)、フッ素系界面活性剤)
W-25:メガファックR-41(DIC(株)、フッ素系界面活性剤)
W-26:メガファックR-41-LM(DIC(株)、フッ素系界面活性剤)
W-27:メガファックR-94(DIC(株)、フッ素系界面活性剤)
W-28:メガファックDS-21(DIC(株)、フッ素系界面活性剤)
W-29:メガファックRS-43(DIC(株)、フッ素系界面活性剤)
W-30:メガファックRS-72-K(DIC(株)、フッ素系界面活性剤)
W-31:メガファックRS-90(DIC(株)、フッ素系界面活性剤)
W-32:メガファックTF-1956 (DIC(株)、フッ素系界面活性剤)
W-33:フタージェント208G((株)NEOS、フッ素系界面活性剤)
W-34:フタージェント215M((株)NEOS、フッ素系界面活性剤)
W-35:フタージェント245F((株)NEOS、フッ素系界面活性剤)
W-36:フタージェント601AD((株)NEOS、フッ素系界面活性剤)
W-37:フタージェント601ADH2((株)NEOS、フッ素系界面活性剤)
W-38:フタージェント602A((株)NEOS、フッ素系界面活性剤)
W-39:フタージェント610FM((株)NEOS、フッ素系界面活性剤)
W-40:フタージェント710FL((株)NEOS、フッ素系界面活性剤)
W-41:フタージェント710FM((株)NEOS、フッ素系界面活性剤)
W-42:フタージェント710FS((株)NEOS、フッ素系界面活性剤)
W-43:フタージェントFTX-218((株)NEOS、フッ素系界面活性剤)
W-44:PolyFox PF6320(OMNOVA社製、フッ素系界面活性剤)
直径8インチ(=203.2mm)のシリコンウエハ上に下層膜形成用組成物40または41をスピンコート法で塗布し、ホットプレートを用いて90℃で2分加熱して乾燥させた。さらに紫外線フォトレジスト硬化装置(UMA-802-HC-552;ウシオ電機株式会社製)を用いて3000mJ/cm2の露光量にて下層膜形成用組成物に紫外線を全面照射して厚さ3nmの下層膜を形成した。この下層膜付きの支持体を用いて試験例1と同様にして画素を形成し、試験例1と同様の手法で残渣を評価した。なお、着色組成物はGreen組成物1を用いた。下層膜形成用組成物40、41のいずれを用いた場合であっても、残渣の評価は上記の評価基準で「5」であった。
シリコンフォトダイオードが形成された直径8インチ(=203.2mm)の支持体上に上記試験例2と同様の方法で隔壁を形成した後、支持体上に下層膜形成用組成物1をスピンコート法で塗布し、ホットプレートを用いて220℃で5分加熱して膜厚3nmの下層膜を形成した。この下層膜付きの支持体上に、Green組成物1をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、KrFスキャナ露光装置(FPA-6300ES6a、キヤノン(株)製)を使用し、一辺0.7μmのベイヤーパターンがそれぞれ支持体の4mm×3mmの領域に配列されたマスクパターンを介して、248nmの波長の光を200mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーで飛ばし、支持体を自然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、緑色画素を形成した。
緑色画素が形成された支持体上にBlue組成物1をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、KrFスキャナ露光装置(FPA-6300ES6a、キヤノン(株)製)を使用し、一辺0.7μmの正方形パターンがそれぞれ支持体上の4mm×3mmの領域に配列されたマスクパターンを介して、248nmの波長の光を200mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーシリコンウエハコンウエハを自然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、青色画素を形成した。
緑色画素と青色画素が形成された支持体上にRed組成物1をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、KrFスキャナ露光装置(FPA-6300ES6a、キヤノン(株)製)を使用し、一辺0.7μmの正方形パターンがそれぞれ支持体上の4mm×3mmの領域に配列されたマスクパターンを介して、248nmの波長の光を200mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーで飛ばし、支持体を然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、赤色画素を形成し、緑色画素、青色画素、赤色画素からなるカラーフィルタを製造した。このカラーフィルタを公知の方法に従い固体撮像素子に組み込んだ結果、良好な画像性能が得られた。
シリコンフォトダイオードが形成された直径8インチ(=203.2mm)の支持体上に上記試験例2と同様の方法で隔壁を形成した後、支持体上に下層膜形成用組成物1をスピンコート法で塗布し、ホットプレートを用いて220℃で5分加熱して膜厚3nmの下層膜を形成した。この下層膜付きの支持体上に、Green組成物1をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、KrFスキャナ露光装置(FPA-6300ES6a、キヤノン(株)製)を使用し、一辺0.7μmのベイヤーパターンがそれぞれ支持体上の4mm×3mmの領域に配列されたマスクパターンを介して、248nmの波長の光を200mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーで飛ばし、シリコンウエハを自然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、緑色画素を形成した。
緑色画素が形成されたシリコンウエハ上に下層膜形成用組成物1をスピンコート法で塗布し、ホットプレートを用いて220℃で5分加熱して膜厚3nmの下層膜を形成した。さらにBlue組成物1をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、KrFスキャナ露光装置(FPA-6300ES6a、キヤノン(株)製)を使用し、一辺0.7μmの正方形パターンがそれぞれ支持体上の4mm×3mmの領域に配列されたマスクパターンを介して、248nmの波長の光を200mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーシリコンウエハコンウエハを自然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、青色画素を形成した。
緑色画素と青色画素が形成された支持体上に下層膜形成用組成物1をスピンコート法で塗布し、ホットプレートを用いて220℃で5分加熱して膜厚3nmの下層膜を形成した。さらにRed組成物1をポストベーク後の膜厚が0.4μmになるようにスピンコート法で塗布した。次いで、ホットプレートを用いて100℃で2分間加熱して組成物層を形成した。次いで、この組成物層に対して、KrFスキャナ露光装置(FPA-6300ES6a、キヤノン(株)製)を使用し、一辺0.7μmの正方形パターンがそれぞれ支持体上の4mm×3mmの領域に配列されたマスクパターンを介して、248nmの波長の光を200mJ/cm2の露光量で照射して露光した。露光後の組成物層に対し、テトラメチルアンモニウムハイドロオキサイドの0.3質量%水溶液を用い、23℃で60秒間パドル現像を行った。その後、スピンシャワーにて水を用いてリンスを行い、更に純水にて水洗いを行った。その後、水滴を高圧のエアーで飛ばし、支持体を然乾燥させたのち、ホットプレートを用いて200℃で300秒間ポストベークを行い、赤色画素を形成し、緑色画素、青色画素、赤色画素からなるカラーフィルタを作製した。このカラーフィルタを公知の方法に従い固体撮像素子に組み込んだ結果、試験例4よりもより良好な画像性能が得られた。これは下層膜を形成する工程と各色の画素を形成する工程とをそれぞれ交互に行うことで、先に形成する画素上にその次に形成する着色組成物の残渣が残ることを抑制できたためと推測される。
11:隔壁
31~33:画素
Claims (18)
- カラーフィルタの下層膜形成用組成物であって、
樹脂Aと、溶剤Bとを含み、
前記樹脂Aは、アルキレンオキシ構造を有する樹脂a-1を含み、
前記下層膜形成用組成物の全固形分中における前記樹脂a-1の含有量が50質量%以上であり、
前記下層膜形成用組成物の固形分濃度が1質量%以下である、下層膜形成用組成物。 - 前記下層膜形成用組成物の全固形分中における前記樹脂Aの含有量が50質量%以上である、請求項1に記載の下層膜形成用組成物。
- 前記樹脂a-1が有するアルキレンオキシ構造は、式(AO-1)で表される構造である、請求項1または2に記載の下層膜形成用組成物;
-(R1-O)n- ・・・(AO-1)
式中、R1はアルキレン基を表し、nは2以上の数を表す。 - 前記樹脂a-1の酸価が40mgKOH/g以下である、請求項1~3のいずれか1項に記載の下層膜形成用組成物。
- 前記樹脂a-1は重合性基を含む、請求項1~4のいずれか1項に記載の下層膜形成用組成物。
- 前記樹脂a-1は、アルキレンオキシ構造を含む基を有する繰り返し単位と、重合性基を有する繰り返し単位とを含む、請求項1~4のいずれか1項に記載の下層膜形成用組成物。
- 前記重合性基がエチレン性不飽和結合含有基または環状エーテル基である、請求項5または6に記載の下層膜形成用組成物。
- さらに界面活性剤を含む、請求項1~7のいずれか1項に記載の下層膜形成用組成物。
- 更に、前記樹脂A以外の重合性化合物を含む、請求項1~8のいずれか1項に記載の下層膜形成用組成物。
- 前記下層膜形成用組成物の全固形分中における前記樹脂Aと前記重合性化合物の合計の含有量が70~100質量%である、請求項9に記載の下層膜形成用組成物。
- 前記重合性化合物は、エチレン性不飽和結合含有基を有する化合物を含み、
前記下層膜形成用組成物は、更に光重合開始剤を含む、請求項9または10に記載の下層膜形成用組成物。 - 支持体と、支持体上に形成された下層膜と、前記下層膜上に形成された画素とを有するカラーフィルタであって、
前記下層膜は、アルキレンオキシ構造を有する樹脂a-1を50質量%以上含み、
前記下層膜の膜厚が30nm以下である、
カラーフィルタ。 - 前記支持体の表面に隔壁が形成されており、
前記支持体上であって、前記隔壁で区画された領域に前記下層膜が形成されており、
前記下層膜上に前記画素が形成されている、請求項12に記載のカラーフィルタ。 - 支持体上に請求項1~10のいずれか1項に記載の下層膜形成用組成物を適用して下層膜を形成する工程と、
前記下層膜上に画素を形成する工程と、を含み、
前記画素を形成する工程は、画素形成用組成物を適用して画素形成用組成物層を形成する工程と、前記画素形成用組成物層をパターン状に露光する工程と、前記画素形成用組成物層の未露光部を現像除去する工程と、を含むカラーフィルタの製造方法。 - 前記露光する工程では、前記画素形成用組成物層に波長300nm以下の光を照射して露光する、請求項14に記載のカラーフィルタの製造方法。
- 下層膜を形成する工程と前記画素を形成する工程とをそれぞれ交互に2回以上行い、2種以上の画素を形成する、請求項14または15に記載のカラーフィルタの製造方法。
- 請求項12または13に記載のカラーフィルタを有する固体撮像素子。
- 請求項12または13に記載のカラーフィルタを有する画像表示装置。
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