WO2020129807A1 - 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 - Google Patents
感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 Download PDFInfo
- Publication number
- WO2020129807A1 WO2020129807A1 PCT/JP2019/048708 JP2019048708W WO2020129807A1 WO 2020129807 A1 WO2020129807 A1 WO 2020129807A1 JP 2019048708 W JP2019048708 W JP 2019048708W WO 2020129807 A1 WO2020129807 A1 WO 2020129807A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- group
- preferable
- mass
- ring
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- 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
- G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
- G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13398—Spacer materials; Spacer properties
-
- 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
-
- 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
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
-
- 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
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
- G03F7/029—Inorganic compounds; Onium compounds; Organic compounds having hetero atoms other than oxygen, nitrogen or sulfur
-
- 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
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
-
- 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
- G03F7/105—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having substances, e.g. indicators, for forming visible images
Definitions
- the present invention relates to a photosensitive coloring composition and the like.
- a photosensitive coloring composition that is preferably used for forming a colored spacer or the like in a color filter such as a liquid crystal display, a cured product and a colored spacer obtained by curing the photosensitive coloring composition, and an image including the colored spacer.
- display device Japanese Patent Application No. 2018-236121 filed with the Japan Patent Office on December 18, 2018, the description, claims, drawings and abstract of the entire contents, and references cited in this specification All or part of the content disclosed in the above is incorporated herein by reference as the disclosure content of the present specification.
- Liquid crystal display uses the property that the arrangement of liquid crystal molecules is switched by turning on and off the voltage to the liquid crystal.
- Many members forming the liquid crystal panel are formed by a method using a photosensitive composition, which is represented by photolithography.
- a so-called spacer which is used to keep the distance between two substrates in a liquid crystal panel constant, can be mentioned.
- Patent Document 1 describes a method using a spacer having a light shielding property (colored spacer). Further, in Patent Document 2, a specific combination is required in order to obtain a colored spacer that can control a shape and a level difference while securing a light-shielding property and a voltage holding ratio of a liquid crystal and has excellent adhesion to a substrate. It has been proposed to use colored photosensitive compositions containing pigments.
- Patent Document 3 describes that the mechanical properties at high film thickness can be enhanced by using a specific photopolymerization initiator, and Patent Document 4 uses a specific unsaturated group-containing compound. It is described that the mechanical properties are enhanced.
- Patent Document 5 describes that by using a coloring composition containing a purple colorant and/or a brown colorant and a specific blue colorant, contamination of the liquid crystal layer by the colorant is reduced. There is.
- the colored spacers In order to suppress display defects of the liquid crystal display, it is necessary that the colored spacers have low surface roughness and excellent smoothness. As a result of studies by the present inventors, it has been found that it is difficult to obtain a colored spacer having both surface roughness and mechanical properties with the photosensitive colored composition described in Patent Documents 2 and 5.
- Patent Documents 3 and 4 have no description about colored spacers, and the effect of including a colorant in the spacers was unclear.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a photosensitive coloring composition capable of forming a colored spacer having excellent surface roughness and mechanical properties.
- the present inventors as a result of intensive studies to solve the above problems, the total solid content, the content ratio of the colorant within a specific range, also using a specific pigment as a colorant, the content ratio It was found that the above-mentioned problems can be solved by setting the above-mentioned range to a specific range, and the present invention has been completed. That is, the present invention has the following configurations [1] to [9].
- a photosensitive coloring composition containing (a) a colorant, (b) an alkali-soluble resin, (c) a photopolymerization initiator, and (d) an ethylenically unsaturated compound,
- the content of the (a) colorant is 2 to 20% by mass based on the total solid content of the photosensitive coloring composition
- the (a) colorant contains a purple pigment
- the photosensitive coloring composition wherein the content of the purple pigment in the colorant (a) is 50% by mass or more.
- the purple pigment is C.I. I. Pigment Violet 29 and C.I. I. Pigment Violet 23.
- the photosensitive coloring composition according to [1] containing at least one selected from the group consisting of Pigment Violet 23.
- a photosensitive coloring composition capable of forming a colored spacer having excellent surface roughness and mechanical properties, a cured product, a colored spacer composed of the same, and an image display device including such a colored spacer are provided. Can be provided.
- (meth)acryl means “acryl and/or methacryl”, and the same applies to “(meth)acrylate” and “(meth)acryloyl”.
- the "(co)polymer” is meant to include both a homopolymer (copolymer) and a copolymer (copolymer), and "acid (anhydride)", “(anhydrous)... acid” , Both acid and its anhydride are meant to be included.
- the “acrylic resin” means a (co)polymer containing (meth)acrylic acid and a (co)polymer containing a (meth)acrylic acid ester having a carboxyl group.
- the term “monomer” is a term corresponding to a so-called high-molecular substance (polymer), and includes not only a narrowly defined monomer (monomer) but also a dimer, a trimer, an oligomer and the like. Is.
- the “total solid content” means all components other than the solvent contained in the photosensitive coloring composition or the ink described below.
- the “weight average molecular weight” refers to a polystyrene equivalent weight average molecular weight (Mw) by GPC (gel permeation chromatography).
- the “amine value” represents an amine value in terms of effective solid content, and is a value represented by the amount of base and the equivalent amount of KOH per 1 g of solid content of the dispersant. Is. The measuring method will be described later.
- the “acid value” represents an acid value in terms of effective solid content, and is calculated by neutralization titration unless otherwise specified.
- the photosensitive coloring composition of the present invention is (A) Colorant (b) Alkali-soluble resin (c) Photopolymerization initiator (d) Ethylenically unsaturated compound is contained as an essential component, and if necessary, an adhesion improver such as a silane coupling agent and an interface.
- each compounding ingredient is used in a state of being dissolved or dispersed in a solvent.
- the photosensitive coloring composition of the present invention contains (a) a colorant.
- the (a) colorant By containing the (a) colorant, it is possible to obtain a suitable light-absorbing property, particularly a suitable light-shielding property when used for forming a light-shielding member such as a colored spacer.
- the content ratio of the (a) colorant is 2 to 20% by mass based on the total solid content.
- the content ratio of the (a) colorant is not particularly limited as long as it is 2 to 20 mass% in the total solid content, but from the viewpoint of light-shielding property, 3 mass% or more is preferable, and 4 mass% or more is more preferable. It is more preferably 5% by mass or more.
- it is preferably 18% by mass or less, more preferably 15% by mass or less, further preferably 12% by mass or less, further preferably 10% by mass or less, and particularly preferably 8% by mass or less. ..
- 3 to 18% by mass is preferable, 3 to 15% by mass is more preferable, 4 to 12% by mass is further preferable, 4 to 10% by mass is further preferable, and 5 to 8% by mass is particularly preferable.
- a pigment or a dye may be used. Among these, it is preferable to use a pigment from the viewpoint of durability.
- the (a) colorant contains a purple pigment
- the content ratio of the purple pigment in the (a) colorant is 50% by mass or more.
- the dispersion of the pigment in the coating film becomes uniform, so that the solubility in the developing solution during development becomes uniform and the surface roughness becomes good. It is considered to be.
- the violet pigment has the maximum absorption wavelength of the absorption peak in the vicinity of the wavelength of 500 to 600 nm in the absorption spectrum, it is effective in that the optical density (OD) can be easily increased by including the violet pigment.
- C.I. I. Pigment Violet 1 1:1, 2, 2:2, 3, 3:1, 3:3, 5, 5:1, 14, 15, 16, 19, 23, 25, 27, 29, 31, 32, 37, 39, 42, 44, 47, 49, 50 can be mentioned.
- C.I. I. Pigment Violet 19, 23, 29, more preferably C.I. I. Pigment Violet 23, 29 can be mentioned.
- C.I. I. Pigment Violet 29 is preferably used.
- the content of the purple pigment in the colorant (a) is not particularly limited as long as it is 50% by mass or more, but from the viewpoint of improving the surface roughness, 55% by mass or more is preferable, 58% by mass or more is more preferable, and 60% by mass or more. Mass% or more is more preferable, 62 mass% or more is still more preferable, and 65 mass% or more is especially preferable. On the other hand, 90% by mass or less is preferable, 80% by mass or less is more preferable, and 75% by mass or less is still more preferable, from the viewpoint of widening the absorption wavelength band by utilizing the optical characteristics of the colorant other than the purple pigment.
- it is preferably 50 to 90% by mass, more preferably 55 to 90% by mass, further preferably 58 to 80% by mass, further preferably 60 to 80% by mass, particularly preferably 62 to 75% by mass, and 65 to 75%. Mass% is especially preferred.
- the content ratio of Pigment Violet 29 is not particularly limited, but from the viewpoint of surface roughness and light resistance factory, it is preferably 50% by mass or more, more preferably 55% by mass or more, further preferably 60% by mass or more, and 62% by mass. The above is more preferable, and 65% by mass or more is particularly preferable.
- it is preferably 50 to 90% by mass, more preferably 55 to 90% by mass, further preferably 58 to 80% by mass, further preferably 60 to 80% by mass, particularly preferably 62 to 75% by mass, and 65 to 75%. Mass% is especially preferred.
- the colorant may include a colorant other than the purple pigment (hereinafter abbreviated as “other colorant”).
- other colorants include pigments and dyes. From the viewpoint of heat resistance, pigments are preferable, and from the viewpoints of color tone, photocurability and sensitivity, organic pigments are preferable.
- the pigment examples include organic coloring pigments such as yellow pigments, orange pigments, red pigments, blue pigments, green pigments and brown pigments.
- Examples of the yellow pigment include C.I. I. Pigment Yellow 1, 1:1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 14, 16, 17, 24, 31, 32, 34, 35, 35:1, 36, 36: 1, 37, 37:1, 40, 41, 42, 43, 48, 53, 55, 61, 62, 62:1, 63, 65, 73, 74, 75, 81, 83, 87, 93, 94, 95, 97, 100, 101, 104, 105, 108, 109, 110, 111, 116, 117, 119, 120, 126, 127, 127: 1, 128, 129, 133, 134, 136, 138, 139, 142, 147, 148, 150, 151, 153, 154, 155, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166
- C.I. I. Pigment Yellow 83, 117, 129, 138, 139, 150, 154, 155, 180, 185, and C.I. I. Pigment Yellow 138, 139, and 150 are more preferable, and C.I. I. Pigment Yellow 139 is particularly preferable.
- C.I. I. Pigment Orange 1 2, 5, 13, 16, 17, 19, 20, 21, 22, 23, 24, 34, 36, 38, 39, 43, 46, 48, 49, 61, 62, 64, 65, 67, 68, 69, 70, 71, 72, 73, 74, 75, 77, 78, 79.
- C.I. I. Pigment Orange 13, 43, 64, 72 is preferable, and when the photosensitive coloring composition is cured by ultraviolet rays, it is preferable to use an orange pigment having a low ultraviolet absorption rate.
- C. I. Pigment Orange 64, 72 is more preferable, and C.I. I. Pigment Orange 64 is particularly preferable.
- C.I. I. Pigment Red 177, 254, 272 is preferable, and when the photosensitive coloring composition is cured with ultraviolet rays, it is preferable to use a red pigment having a low ultraviolet absorption rate.
- I. Pigment Red 254 and 272 are more preferably used.
- blue pigments examples include C.I. I. Pigment Blue 1, 1:2, 9, 14, 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 17, 19, 25, 27, 28, 29, 33, 35, 36, 56, 56:1, 60, 61, 61:1, 62, 63, 66, 67, 68, 71, 72, 73, 74, 75, 76, 78, 79.
- C.I. I. Pigment Blue 15, 15:1, 15:2, 15:3, 15:4, 15:6, 16, 60 and more preferably C.I. I. Pigment Blue 15:6, 16 can be mentioned. From the viewpoint of dispersibility and light shielding property, C.I. I.
- Pigment Blue 15:6, 16, 60 when curing the photosensitive coloring composition with ultraviolet rays, it is preferable to use a blue pigment having a low ultraviolet absorption rate.
- C. I. It is more preferable to use Pigment Blue 60.
- C.I. I. Pigment Blue 16 is preferably used.
- C.I. I. Pigment Green 1 2, 4, 7, 8, 10, 13, 14, 15, 17, 18, 19, 26, 36, 45, 48, 50, 51, 54, 55, 58.
- C.I. I. Pigment Green 7, 36 can be mentioned.
- C.I. I. Pigment Brown 23, 25, 26, 28, 38, 41, 83, 93 As the brown pigment (brown pigment), C.I. I. Pigment Brown 23, 25, 26, 28, 38, 41, 83, 93.
- C.I. I. Pigment Brown 26, 28, 83, 93 From the viewpoint of achieving both near-infrared transparency and light-shielding properties, C.I. I. Pigment Brown 26, 28, 83, 93.
- the orange pigment is preferable because it has an absorption band near a wavelength of 400 to 500 nm, which is different from the absorption band of the purple pigment.
- the content of the orange pigment in the (a) colorant is not particularly limited, but is preferably 5% by mass or more, more preferably 10% by mass or more, further preferably 20% by mass or more, and 30% by mass. The above is particularly preferable, 50% by mass or less is preferable, 45% by mass or less is more preferable, 40% by mass or less is further preferable, and 35% by mass or less is particularly preferable.
- the optical density (OD) tends to be high, and when it is at most the upper limit, the surface roughness tends to be good.
- the content ratio of the orange pigment in the (a) colorant is preferably 50% by mass or less, and 40% by mass. The following is more preferable, 30% by mass or less is further preferable, 20% by mass or less is further preferable, 10% by mass or less is particularly preferable, and 0% by mass is most preferable.
- the content ratio of the blue pigment in the (a) colorant is preferably 50% by mass or less, more preferably 40% by mass or less, and 30% by mass. % Or less is more preferable, 20% by mass or less is still more preferable, 10% by mass or less is particularly preferable, and 0% by mass is most preferable.
- C.I. I When CI Pigment Blue 60 is contained, the surface roughness tends to deteriorate, so that C.I. I.
- the content ratio of Pigment Blue 60 is preferably 50% by mass or less, more preferably 40% by mass or less, further preferably 30% by mass or less, further preferably 20% by mass or less, particularly preferably 10% by mass or less, and 0% by mass. Is most preferred.
- a black pigment may be included as another colorant.
- black pigments include organic black pigments and inorganic black pigments.
- organic black pigment for example, an organic compound containing at least one selected from the group consisting of a compound represented by the following formula (1), a geometrical isomer of the compound, a salt of the compound, and a salt of the geometrical isomer of the compound. Black pigments may be mentioned.
- R 1 and R 6 are each independently a hydrogen atom, CH 3 , CF 3 , a fluorine atom or a chlorine atom;
- the geometric isomer of the compound represented by the general formula (1) has the following core structure (however, the substituents in the structural formula are omitted), and the trans-trans isomer is probably the most stable. ..
- the compound represented by the general formula (1) is anionic
- its charge is any known suitable cation, for example, a metal, organic, inorganic or metal organic cation, specifically, an alkali metal or an alkaline earth metal.
- the salt is compensated by a transition metal, a primary ammonium, a secondary ammonium, a tertiary ammonium such as trialkylammonium, a quaternary ammonium such as tetraalkylammonium, or an organometallic complex.
- the geometric isomer of the compound represented by the general formula (1) is anionic, it is preferably the same salt.
- R 2 , R 4 , R 5 , R 7 , R 9 and R 10 are each independently preferably a hydrogen atom, a fluorine atom or a chlorine atom, and more preferably a hydrogen atom.
- R 3 and R 8 are preferably each independently a hydrogen atom, NO 2 , OCH 3 , OC 2 H 5 , a bromine atom, a chlorine atom, CH 3 , C 2 H 5 , N(CH 3 ) 2 , N(CH 3 )(C 2 H 5 ), N(C 2 H 5 ) 2 , ⁇ -naphthyl, ⁇ -naphthyl, SO 3 H or SO 3 ⁇ , and more preferably a hydrogen atom or SO 3 H.
- R 1 and R 6 are each independently preferably a hydrogen atom, CH 3 or CF 3 , and more preferably a hydrogen atom.
- at least one combination selected from the group consisting of R 1 and R 6 , R 2 and R 7 , R 3 and R 8 , R 4 and R 9 , and R 5 and R 10 is the same, and more preferably R 1 is the same as R 6 , R 2 is the same as R 7 , R 3 is the same as R 8 , R 4 is the same as R 9 , and R 5 is the same as R 10 . It is the same.
- alkyl group having 1 to 12 carbon atoms examples include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, sec-butyl group, isobutyl group, tert-butyl group, 2-methylbutyl group, n- Pentyl group, 2-pentyl group, 3-pentyl group, 2,2-dimethylpropyl group, n-hexyl group, heptyl group, n-octyl group, 1,1,3,3-tetramethylbutyl group, 2-ethylhexyl group Group, nonyl group, decyl group, undecyl group or dodecyl group.
- Examples of the cycloalkyl group having 3 to 12 carbon atoms include cyclopropyl group, cyclopropylmethyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cyclohexylmethyl group, trimethylcyclohexyl group, tsudyl group, norbornyl group, bornyl group and norcalyl group.
- alkenyl group having 2 to 12 carbon atoms examples include vinyl group, allyl group, 2-propen-2-yl group, 2-buten-1-yl group, 3-buten-1-yl group and 1,3-butadiene.
- the cycloalkenyl group having 3 to 12 carbon atoms includes, for example, 2-cyclobuten-1-yl group, 2-cyclopenten-1-yl group, 2-cyclohexen-1-yl group, 3-cyclohexen-1-yl group, 2 ,4-cyclohexadiene-1-yl group, 1-p-menthen-8-yl group, 4(10)-tugen-10-yl group, 2-norbornen-1-yl group, 2,5-norbornadiene-1 An -yl group, a 7,7-dimethyl-2,4-norcaradien-3-yl group or a camphenyl group.
- the alkynyl group having 2 to 12 carbon atoms is, for example, 1-propyn-3-yl group, 1-butyn-4-yl group, 1-pentyn-5-yl group, 2-methyl-3-butyn-2-yl group.
- the halogen atom is, for example, a fluorine atom, a chlorine atom, a bromine atom or an iodine atom.
- the organic black pigment represented by the general formula (1) is preferably a compound represented by the following general formula (2) and/or a geometrical isomer of the compound.
- organic black pigment examples include Irgaphor (registered trademark) Black S 0100 CF (manufactured by BASF) under the trade name.
- This organic black pigment is preferably used after being dispersed by a dispersant, a solvent and a method described later. Further, the presence of the compound represented by the general formula (2) or the sulfonic acid derivative of the geometrical isomer of the compound at the time of dispersion may improve the dispersibility and the storage stability.
- the organic black pigment from the viewpoint of optical characteristics and reliability, the organic black pigment described in Korean Published Patent No. 10-2018-0052502 and Korean Published Patent No. 10-2018-0052864 are described. It is preferable to use the known organic black pigment.
- organic black pigments include aniline black, cyanine black, perylene black and the like. Further, carbon black which is an inorganic black pigment may be used. Examples of carbon black include the following carbon blacks.
- Printex registered trademark; the same applies hereinafter
- Printex3OP Printex30, Printex30OP, Printex40, Printex45, Printex55, Printex60, Printex75, Printex80, Printex85, Printex90, PrintexPrintG, PrintexL, PrintexA, Printex90.
- RAVEN14 RAVEN15, RAVEN16, RAVEN22, RAVEN30, RAVEN35, RAVEN40, RAVEN410, RAVEN420, RAVEN450, RAVEN500, RAVEN780, RAVEN850, RAVEN890H, RAVEN1000, RAVEN1020, RAVEN1040, RAVEN1060U , RAVEN1080U, RAVEN1170, RAVEN1190U, RAVEN1250, RAVEN1500, RAVEN2000, RAVEN2500U, RAVEN3500, RAVEN5000, RAVEN5250, RAVEN5750, RAVEN7000.
- Carbon black coated with resin may be used.
- the use of resin-coated carbon black has the effect of improving the adhesion to the glass substrate and the volume resistance value.
- carbon black coated with a resin for example, carbon black described in Japanese Patent Laid-Open No. 09-71733 can be preferably used.
- Resin-coated carbon black is preferably used in terms of volume resistance and dielectric constant.
- the average particle diameter of the pigment is usually 1 ⁇ m or less, preferably 0.5 ⁇ m or less, and more preferably 0.25 ⁇ m or less.
- the standard of the average particle diameter is the number of pigment particles.
- the average particle diameter of the pigment is a value obtained from the pigment particle diameter measured by dynamic light scattering (DLS). The particle size is measured by sufficiently diluting the photosensitive coloring composition (usually diluted to prepare a pigment concentration of about 0.005 to 0.2% by mass. However, if there is a concentration recommended by the measuring device, (According to concentration) and measured at 25°C.
- a dye may be used.
- the dyes include azo dyes, anthraquinone dyes, phthalocyanine dyes, quinoneimine dyes, quinoline dyes, nitro dyes, carbonyl dyes and methine dyes.
- azo dyes include C.I. I. Acid Yellow 11, C.I. I. Acid Orange 7, C.I. I. Acid Red 37, C.I. I. Acid Red 180, C.I. I. Acid Blue 29, C.I. I. Direct Red 28, C.I. I. Direct Red 83, C.I. I. Direct Yellow 12, C.I. I. Direct Orange 26, C.I. I. Direct Green 28, C.I. I.
- Direct Green 59 C.I. I. Reactive Yellow 2, C.I. I. Reactive Red 17, C.I. I. Reactive Red 120, C.I. I. Reactive Black 5, C.I. I. Disperse Orange 5, C.I. I. Disperse Red 58, C.I. I. Disperse Blue 165, C.I. I. Basic Blue 41, C.I. I. Basic Red 18, C.I. I. Mordant Red 7, C.I. I. Moldant Yellow 5, C.I. I. Moldant Black 7 and the like can be mentioned.
- anthraquinone dyes examples include C.I. I. Bat Blue 4, C.I. I. Acid Blue 40, C.I. I. Acid Green 25, C.I. I. Reactive Blue 19, C.I. I. Reactive Blue 49, C.I. I. Disperse Red 60, C.I. I. Disperse Blue 56, C.I. I. Examples include Disperse Blue 60 and the like.
- phthalocyanine dyes such as C.I. I. Pad Blue 5 and the like are quinone imine dyes such as C.I. I. Basic Blue 3, C.I. I. Basic Blue 9 and the like are quinoline dyes such as C.I. I. Solvent Yellow 33, C.I. I. Acid Yellow 3, C.I. I. Disperse Yellow 64 and the like are nitro dyes such as C.I. I. Acid Yellow 1, C.I. I. Acid Orange 3, C.I. I. Examples include Disperse Yellow 42 and the like.
- the (b) alkali-soluble resin used in the present invention is not particularly limited as long as it is a resin containing a carboxyl group or a hydroxyl group, and examples thereof include epoxy (meth)acrylate resin, acrylic resin, carboxyl group-containing epoxy resin, and carboxyl group-containing resin. Examples thereof include urethane resins, novolac resins, polyvinylphenol resins, and the like. Among them, (b1) epoxy (meth)acrylate resin (b2) acrylic copolymer resin is preferably used from the viewpoint of excellent plate-making property. These may be used alone or in combination of two or more.
- the (b1) epoxy (meth)acrylate resin is a reaction product of an epoxy resin (epoxy compound) and an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or an ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group.
- the polybasic acid and/or its anhydride before reacting the polybasic acid and/or its anhydride with a hydroxyl group, after reacting a compound having two or more substituents capable of reacting with the hydroxyl group, the polybasic acid and/or its anhydride
- the resin obtained by reacting with is also included in the above (b1) epoxy (meth)acrylate resin.
- a resin obtained by reacting a compound having a functional group capable of further reacting with a carboxyl group of the resin obtained by the above reaction is also included in the above (b1) epoxy (meth)acrylate resin.
- the epoxy (meth)acrylate resin does not substantially have an epoxy group in the chemical structure and is not limited to “(meth)acrylate”, but an epoxy compound (epoxy resin) is used as a raw material.
- (meth)acrylate" is a typical example, and thus is so named in a conventional manner.
- (b1) epoxy (meth)acrylate-based resin used in the present invention include the following epoxy (meth)acrylate-based resin (b1-1) and/or epoxy (meth)acrylate-based resin (b1-2). (Hereinafter, it may be referred to as a “carboxyl group-containing epoxy (meth)acrylate-based resin”.) is preferably used from the viewpoint of developability and reliability.
- the epoxy resin includes the raw material compound before forming the resin by thermosetting, and the epoxy resin can be appropriately selected and used from known epoxy resins.
- the epoxy resin may be a compound obtained by reacting a phenolic compound with epihalohydrin.
- the phenolic compound is preferably a compound having a divalent or higher valent phenolic hydroxyl group, and may be a monomer or a polymer.
- the type of epoxy resin used as a raw material includes cresol novolac type epoxy resin, phenol novolac type epoxy resin, bisphenol A type epoxy resin, bisphenol F type epoxy resin, trisphenolmethane type epoxy resin, biphenyl novolac type epoxy resin, naphthalene novolac type.
- Epoxy resin epoxy resin which is a reaction product of polyaddition reaction product of dicyclopentadiene and phenol or cresol and epihalohydrin, adamantyl group-containing epoxy resin, fluorene type epoxy resin and the like can be preferably used. Those having an aromatic ring in the main chain can be preferably used.
- the epoxy resin include, for example, bisphenol A type epoxy resin (for example, "jER (registered trademark, the same applies hereinafter)-828", “jER-1001", and “jER-1002” manufactured by Mitsubishi Chemical Corporation. , “JER-1004”, “NER-1302” (epoxy equivalent 323, softening point 76° C.) manufactured by Nippon Kayaku Co., Ltd., bisphenol F type resin (for example, “jER-807” manufactured by Mitsubishi Chemical Corporation, “ jER-4004P”, “jER-4005P”, “jER-4007P”, “NER-7406” (epoxy equivalent 350, softening point 66°C), etc.
- Cyloxide EHPE an epoxy resin obtained by glycidylating a phenol resin by the reaction of dicyclopentadiene and phenol
- Epoxy resins represented by (B1) to (B4) and the like can be preferably used.
- "XD-1000” manufactured by Nippon Kayaku Co., Ltd. as an epoxy resin represented by the following general formula (B2)
- NC-3000” and epoxy resin represented by the following general formula (B4) include “ESF-300” manufactured by Nippon Steel & Sumitomo Metal Corporation.
- a is an average value and represents a number from 0 to 10.
- R 111 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, a phenyl group, a naphthyl group, or a biphenyl group.
- a plurality of R 111 existing in one molecule may be the same or different.
- R 121 represents a hydrogen atom, a halogen atom, an alkyl group having 1 to 8 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, a phenyl group, a naphthyl group, or a biphenyl group.
- a plurality of R 121 present in one molecule may be the same or different.
- X represents a linking group represented by the following general formula (B3-1) or (B3-2). However, one or more adamantane structures are included in the molecular structure.
- c represents 2 or 3.
- R 131 to R 134 and R 135 to R 137 each independently represent an adamantyl group which may have a substituent, a hydrogen atom or a substituent. It represents an alkyl group having 1 to 12 carbon atoms which may have or a phenyl group which may have a substituent. * Represents a bond.
- p and q each independently represent an integer of 0 to 4
- R 141 and R 142 each independently represent an alkyl group having 1 to 4 carbon atoms or a halogen atom
- R 143 and R 144 each independently represent an alkylene group having 1 to 4 carbon atoms
- x and y each independently represent an integer of 0 or more.
- Examples of the ⁇ , ⁇ -unsaturated monocarboxylic acid or the ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group include (meth)acrylic acid, crotonic acid, o-, m- or p-vinylbenzoic acid, (meth ) Acrylic acid ⁇ -position haloalkyl, alkoxyl, halogen, nitro, cyano-substituted monocarboxylic acids, 2-(meth)acryloyloxyethylsuccinic acid, 2-(meth)acryloyloxyethyladipic acid, 2-( (Meth)acryloyloxyethyl phthalic acid, 2-(meth)acryloyloxyethyl hexahydrophthalic acid, 2-(meth)acryloyloxyethyl maleic acid, 2-(meth)acryloyloxypropyl succinic acid, 2-( (Meth)acryloyloxyprop
- an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or an ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group As a method for adding an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or an ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group to an epoxy resin, a known method can be used. For example, in the presence of an esterification catalyst, an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or an ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group are reacted with an epoxy resin at a temperature of 50 to 150° C. be able to.
- esterification catalyst used here tertiary amines such as triethylamine, trimethylamine, benzyldimethylamine and benzyldiethylamine, and quaternary ammonium salts such as tetramethylammonium chloride, tetraethylammonium chloride and dodecyltrimethylammonium chloride can be used. ..
- the epoxy resin, the ⁇ , ⁇ -unsaturated monocarboxylic acid and/or the ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group, and the esterification catalyst may each be used alone. You may use 2 or more types together.
- the amount of the ⁇ , ⁇ -unsaturated monocarboxylic acid and/or the ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group used is in the range of 0.5 to 1.2 equivalents per 1 equivalent of the epoxy group of the epoxy resin. Is preferable, and more preferably in the range of 0.7 to 1.1 equivalents.
- the amount of the ⁇ , ⁇ -unsaturated monocarboxylic acid and/or ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group is the above lower limit or more, it is possible to suppress insufficient introduction of the unsaturated group, Subsequent reaction with the polybasic acid and/or its anhydride also tends to be satisfactory.
- the content is not more than the above upper limit, it is possible to suppress the unreacted product of the ⁇ , ⁇ -unsaturated monocarboxylic acid and/or the ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group, and to improve the curing property. There is a tendency that it is easy to assume.
- polybasic acid and/or its anhydride examples include maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, benzophenonetetracarboxylic acid, methylhexahydrophthalic acid.
- examples thereof include one or more selected from acids, endomethylenetetrahydrophthalic acid, chlorendic acid, methyltetrahydrophthalic acid, biphenyltetracarboxylic acid, and their anhydrides.
- Particularly preferred is tetrahydrophthalic acid, biphenyltetracarboxylic acid, tetrahydrophthalic anhydride, or biphenyltetracarboxylic dianhydride.
- a known method can be used for the addition reaction of the polybasic acid and/or its anhydride.
- the ⁇ , ⁇ -unsaturated monocarboxylic acid having an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or a carboxyl group on the epoxy resin can be used.
- the desired product can be obtained by continuing the reaction under the same conditions as the addition reaction of the carboxylic acid ester.
- the amount of the polybasic acid and/or its anhydride component added is preferably such that the acid value of the resulting carboxyl group-containing epoxy (meth)acrylate resin is in the range of 10 to 150 mgKOH/g. More preferably, it is in the range of about 140 mgKOH/g. When it is at least the lower limit, the alkali developability tends to be good, and when it is at most the upper limit, the curing performance tends to be good.
- a polyhydric alcohol such as trimethylolpropane, pentaerythritol, or dipentaerythritol may be added during the addition reaction of the polybasic acid and/or its anhydride to introduce a multibranched structure.
- the carboxyl group-containing epoxy (meth)acrylate-based resin is usually added to the reaction product of the epoxy resin with the ⁇ , ⁇ -unsaturated monocarboxylic acid and/or the ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group.
- a basic acid and/or an anhydride thereof or in a reaction product of the epoxy resin with an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or an ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group, It is obtained by mixing the polybasic acid and/or its anhydride and the polyhydric alcohol and then heating.
- the mixing order of the polybasic acid and/or its anhydride and the polyhydric alcohol is not particularly limited. Any existing in a mixture of a reaction product of an epoxy resin with an ⁇ , ⁇ -unsaturated monocarboxylic acid and/or an ⁇ , ⁇ -unsaturated monocarboxylic acid ester having a carboxyl group and a polyhydric alcohol by heating.
- the polybasic acid and/or its anhydride reacts with the hydroxyl group of.
- the polystyrene-equivalent weight average molecular weight (Mw) of the epoxy (meth)acrylate resin measured by gel permeation chromatography (GPC) is usually 1000 or more, preferably 1500 or more, more preferably 2000 or more, more preferably 2500 or more. And usually 10,000 or less, preferably 8000 or less, more preferably 6000 or less, further preferably 5000 or less, and particularly preferably 4000 or less.
- 1000 to 10000 is preferable
- 1000 to 8000 is more preferable
- 1500 to 6000 is further preferable
- the acid value of the epoxy (meth)acrylate-based resin is not particularly limited, but is preferably 10 mgKOH/g or more, more preferably 20 mgKOH/g or more, and preferably 200 mgKOH/g or less, more preferably 150 mgKOH/g or less, 100 mgKOH/g. g or less is more preferable, and 50 mg KOH/g or less is particularly preferable.
- 10 to 200 mgKOH/g is preferable
- 10 to 150 mgKOH/g is more preferable
- 20 to 100 mgKOH/g is further preferable
- 20 to 50 mgKOH/g is particularly preferable.
- the double bond equivalent of the epoxy (meth)acrylate resin is not particularly limited, but is preferably 800 or less, more preferably 700 or less, further preferably 600 or less, further preferably 500 or less, particularly preferably 400 or less, and 300 or less. Is most preferable, 100 or more is preferable, 150 or more is more preferable, 200 or more is further preferable, and 250 or more is particularly preferable. For example, 100 to 800 is preferable, 100 to 700 is more preferable, 150 to 600 is further preferable, 150 to 500 is further preferable, 200 to 400 is particularly preferable, and 250 to 300 is particularly preferable. When it is at most the upper limit, mechanical properties and surface roughness will tend to improve, and when it is at least the lower limit, storage stability will tend to improve.
- the double bond equivalent of the resin can be calculated from the following formula (x).
- the chemical structure of the (b1) epoxy (meth)acrylate resin is not particularly limited, but from the viewpoint of curability, an epoxy (meth)acrylate resin (b1-A) having a partial structure represented by the following general formula (i) is used. ) (Hereinafter sometimes abbreviated as “epoxy (meth)acrylate-based resin (b1-A)”) and epoxy (meth)acrylate-based resin (partial structure represented by the following general formula (ii) ( b1-B) (hereinafter sometimes abbreviated as “epoxy (meth)acrylate-based resin (b1-B)”) is preferable. Further, from the viewpoint of reliability, the epoxy (meth)acrylate resin (b1-B) is more preferable.
- R a represents a hydrogen atom or a methyl group
- R b represents a divalent hydrocarbon group which may have a substituent.
- the benzene ring in formula (i) may be further substituted with any substituent. * Represents a bond.
- each R c independently represents a hydrogen atom or a methyl group.
- R d represents a divalent hydrocarbon group having a cyclic hydrocarbon group as a side chain. * Represents a bond.
- R b represents a divalent hydrocarbon group which may have a substituent.
- the divalent hydrocarbon group include a divalent aliphatic group, a divalent aromatic ring group, a group in which one or more divalent aliphatic groups and one or more divalent aromatic ring groups are linked. Can be mentioned.
- the divalent aliphatic group may be linear, branched, cyclic, or a combination thereof. Of these, linear ones are preferable from the viewpoint of developing solubility, while cyclic ones are preferable from the viewpoint of developing adhesion.
- the carbon number is usually 1 or more, preferably 3 or more, more preferably 6 or more, and preferably 20 or less, more preferably 15 or less, still more preferably 10 or less. For example, 1 to 20 is preferable, 3 to 15 is more preferable, and 6 to 10 is further preferable. When it is at least the above lower limit, development adhesion tends to be good, and when it is at most the above upper limit, curability tends to be good.
- divalent linear aliphatic group examples include methylene group, ethylene group, n-propylene group, n-butylene group, n-hexylene group, n-heptylene group and the like. Of these, a methylene group is preferable from the viewpoint of curability.
- divalent branched chain aliphatic group examples include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, and an n-butyl group as side chains in addition to the above divalent linear aliphatic group.
- Examples thereof include a structure having a group, an iso-butyl group, a sec-butyl group, a tert-butyl group and the like.
- the number of rings contained in the divalent cyclic aliphatic group is not particularly limited, but is usually 1 or more and 2 or more, and usually 10 or less and 5 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, and 2 to 5 is further preferable.
- divalent cyclic aliphatic group examples include a group obtained by removing two hydrogen atoms from a ring such as a cyclohexane ring, a cycloheptane ring, a cyclodecane ring, a cyclododecane ring, a norbornane ring, an isobornane ring and an adamantane ring.
- a group obtained by removing two hydrogen atoms from an adamantane ring is preferable from the viewpoint of rigidity of the skeleton.
- Examples of the substituent that the divalent aliphatic group may have include a hydroxyl group; an alkoxy group having 1 to 5 carbon atoms such as a methoxy group and an ethoxy group; a nitro group; a cyano group; a carboxyl group and the like. From the viewpoint of ease of synthesis, it is preferably unsubstituted.
- examples of the divalent aromatic ring group include a divalent aromatic hydrocarbon ring group and a divalent aromatic heterocyclic group.
- the carbon number is usually 4 or more, preferably 5 or more, more preferably 6 or more, and preferably 20 or less, more preferably 15 or less, still more preferably 10 or less.
- 4 to 20 is preferable, 5 to 15 is more preferable, and 6 to 10 is further preferable.
- the aromatic hydrocarbon ring in the divalent aromatic hydrocarbon ring group may be a single ring or a condensed ring.
- the divalent aromatic hydrocarbon ring group include a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a perylene ring, a tetracene ring, a pyrene ring, a benzpyrene ring, a chrysene ring, which has two free valences.
- Examples include groups such as a triphenylene ring, an acenaphthene ring, a fluoranthene ring, and a fluorene ring.
- the aromatic heterocycle in the divalent aromatic heterocyclic group may be a single ring or a condensed ring.
- the divalent aromatic heterocyclic group include a furan ring, a benzofuran ring, a thiophene ring, a benzothiophene ring, a pyrrole ring, a pyrazole ring, an imidazole ring, an oxadiazole ring, and an indole having two free valences.
- a pyrazine ring a pyridazine ring, a pyrimidine ring, a triazine ring, a quinoline ring, an isoquinoline ring, a cynoline ring, a quinoxaline ring, a phenanthridine ring, a perimidine ring, a quinazoline ring, a quinazolinone ring, and an azulene ring.
- a pyrazine ring a pyridazine ring, a pyrimidine ring, a triazine ring, a quinoline ring, an isoquinoline ring, a cynoline ring, a quinoxaline ring, a phenanthridine ring, a perimidine ring, a quinazoline ring, a quinazolinone ring, and an azulene ring.
- Examples of the substituent that the divalent aromatic ring group may have include a hydroxyl group, a methyl group, a methoxy group, an ethyl group, an ethoxy group, a propyl group and a propoxy group. From the viewpoint of curability, it is preferably unsubstituted.
- one or more of the above divalent aliphatic groups and the above divalent aromatic ring groups include groups in which one or more ring groups are linked.
- the number of divalent aliphatic groups is not particularly limited, but is usually 1 or more and 2 or more, usually 10 or less and 5 or less, and more preferably 3 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- the number of divalent aromatic ring groups is not particularly limited, but is usually 1 or more and 2 or more, usually 10 or less and 5 or less, and more preferably 3 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- the curability tends to be good, and when it is at most the upper limit, the curability tends to be good.
- the benzene ring in formula (i) may be further substituted with any substituent.
- substituents include a hydroxyl group, a methyl group, a methoxy group, an ethyl group, an ethoxy group, a propyl group and a propoxy group.
- the number of substituents is not particularly limited and may be one or two or more. From the viewpoint of curability, it is preferably unsubstituted.
- the partial structure represented by the general formula (i) is preferably a partial structure represented by the following general formula (i-1) from the viewpoint of curability.
- R a and R b have the same meaning as in the formula (i).
- R X represents a hydrogen atom or a polybasic acid residue. * Represents a bond.
- the benzene ring in formula (i-1) may be further substituted with any substituent.
- the polybasic acid residue means a monovalent group obtained by removing one OH group from a polybasic acid or its anhydride.
- polybasic acids include maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, benzophenonetetracarboxylic acid, methylhexahydrophthalic acid, endomethylenetetrahydrophthalic acid.
- examples thereof include one or more selected from acids, chlorendic acid, methyltetrahydrophthalic acid, and biphenyltetracarboxylic acid.
- the polybasic acid is preferably maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, biphenyltetracarboxylic acid. Acids, and more preferably tetrahydrophthalic acid and biphenyltetracarboxylic acid.
- the partial structure represented by the formula (i-1) contained in one molecule of the epoxy (meth)acrylate resin (b1-A) may be one kind or two or more kinds.
- R X is a hydrogen atom.
- R X may be a mixture of polybasic acid residues.
- the number of partial structures represented by the formula (i) contained in one molecule of the epoxy (meth)acrylate resin (b1-A) is not particularly limited, but is preferably 1 or more, more preferably 3 or more. Moreover, 20 or less is preferable and 15 or less is more preferable. For example, 1 to 20 is preferable, and 3 to 15 is more preferable. When it is at least the lower limit, the curability tends to be good, and when it is at most the upper limit, the developing solubility tends to be good.
- epoxy (meth)acrylate resin (b1-A) Specific examples of epoxy (meth)acrylate resin (b1-A) are given below.
- R d represents a divalent hydrocarbon group having a cyclic hydrocarbon group as a side chain.
- the cyclic hydrocarbon group include an aliphatic ring group and an aromatic ring group.
- the number of rings contained in the aliphatic ring group is not particularly limited, but is usually preferably 1 or more and 2 or more, and is usually 10 or less, 5 or less, and more preferably 3 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- the carbon number of the aliphatic ring group is usually 4 or more, preferably 6 or more, more preferably 8 or more, and preferably 40 or less, more preferably 30 or less, further preferably 20 or less, particularly 15 or less. preferable.
- the aliphatic ring in the aliphatic ring group include a cyclohexane ring, a cycloheptane ring, a cyclodecane ring, a cyclododecane ring, a norbornane ring, an isobornane ring and an adamantane ring.
- the adamantane ring is preferable from the viewpoint of reliability.
- the number of rings that the aromatic ring group has is not particularly limited, but is usually 1 or more, 2 or more, preferably 3 or more, and usually 10 or less, 5 or less, and more preferably 4 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 4 is further preferable, 2 to 4 is further preferable, and 3 to 4 is particularly preferable.
- the aromatic ring group include an aromatic hydrocarbon ring group and an aromatic heterocyclic group.
- the carbon number of the aromatic ring group is usually 4 or more, preferably 6 or more, more preferably 8 or more, even more preferably 10 or more, particularly preferably 12 or more, and preferably 40 or less, 30 or less. More preferably, 20 or less is further preferable, and 15 or less is particularly preferable. For example, 4 to 40 is preferable, 6 to 30 is more preferable, 8 to 20 is further preferable, 10 to 15 is further preferable, and 12 to 15 is particularly preferable. When it is at least the above lower limit, development adhesion tends to be good, and when it is at most the above upper limit, curability tends to be good.
- aromatic ring in the aromatic ring group benzene ring, naphthalene ring, anthracene ring, phenanthrene ring, perylene ring, tetracene ring, pyrene ring, benzpyrene ring, chrysene ring, triphenylene ring, acenaphthene ring, fluoranthene ring, Examples thereof include a fluorene ring. Among these, a fluorene ring is preferable from the viewpoint of patterning characteristics.
- the divalent hydrocarbon group in the divalent hydrocarbon group having a cyclic hydrocarbon group as a side chain is not particularly limited, but for example, a divalent aliphatic group, a divalent aromatic ring group, or 1 or more. And a group in which one or more divalent aromatic ring groups are linked.
- the divalent aliphatic group may be linear, branched, cyclic, or a combination thereof. Of these, linear ones are preferable from the viewpoint of compatibility, and cyclic ones are preferable from the viewpoint of reliability.
- the carbon number is usually 1 or more, preferably 3 or more, more preferably 6 or more, preferably 25 or less, more preferably 20 or less, and further preferably 15 or less. For example, 1 to 25 is preferable, 3 to 20 is more preferable, and 6 to 15 is further preferable. When it is at least the above lower limit, development adhesion tends to be good, and when it is at most the above upper limit, curability tends to be good.
- divalent linear aliphatic group examples include methylene group, ethylene group, n-propylene group, n-butylene group, n-hexylene group, n-heptylene group and the like. Of these, a methylene group is preferable from the viewpoint of curability.
- divalent branched chain aliphatic group examples include a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, and an n-butyl group as side chains in addition to the above divalent linear aliphatic group.
- Examples thereof include a structure having a group, an iso-butyl group, a sec-butyl group, a tert-butyl group and the like.
- the number of rings contained in the divalent cyclic aliphatic group is not particularly limited, but is usually preferably 1 or more and 2 or more, and is usually 10 or less, 5 or less, and more preferably 3 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- divalent cyclic aliphatic group examples include a group obtained by removing two hydrogen atoms from a ring such as a cyclohexane ring, a cycloheptane ring, a cyclodecane ring, a cyclododecane ring, a norbornane ring, an isobornane ring and an adamantane ring.
- a group obtained by removing two hydrogen atoms from an adamantane ring is preferable from the viewpoint of reliability.
- Examples of the substituent that the divalent aliphatic group may have include a hydroxyl group; an alkoxy group having 1 to 5 carbon atoms such as a methoxy group and an ethoxy group; a nitro group; a cyano group; a carboxyl group and the like. From the viewpoint of ease of synthesis, it is preferably unsubstituted.
- examples of the divalent aromatic ring group include a divalent aromatic hydrocarbon ring group and a divalent aromatic heterocyclic group.
- the carbon number is usually 4 or more, preferably 5 or more, more preferably 6 or more, preferably 30 or less, more preferably 20 or less, and further preferably 15 or less.
- 4 to 30 is preferable, 5 to 20 is more preferable, and 6 to 15 is further preferable.
- the aromatic hydrocarbon ring in the divalent aromatic hydrocarbon ring group may be a single ring or a condensed ring.
- the divalent aromatic hydrocarbon ring group include a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a perylene ring, a tetracene ring, a pyrene ring, a benzpyrene ring, a chrysene ring, each having two free valences.
- Examples include groups such as a triphenylene ring, an acenaphthene ring, a fluoranthene ring, and a fluorene ring.
- the aromatic heterocycle in the aromatic heterocyclic group may be a single ring or a condensed ring.
- the divalent aromatic heterocyclic group include a furan ring, a benzofuran ring, a thiophene ring, a benzothiophene ring, a pyrrole ring, a pyrazole ring, an imidazole ring, an oxadiazole ring, and an indole having two free valences.
- Examples include groups such as a pyrazine ring, a pyridazine ring, a pyrimidine ring, a triazine ring, a quinoline ring, an isoquinoline ring, a cynoline ring, a quinoxaline ring, a phenanthridine ring, a perimidine ring, a quinazoline ring, a quinazolinone ring, and an azulene ring.
- a benzene ring, a naphthalene ring or a fluorene ring having two free valences is preferable, and a fluorene ring having two free valences is more preferable.
- Examples of the substituent that the divalent aromatic ring group may have include a hydroxyl group, a methyl group, a methoxy group, an ethyl group, an ethoxy group, a propyl group and a propoxy group. From the viewpoint of developing solubility and moisture absorption resistance, no substitution is preferable.
- one or more of the above divalent aliphatic groups and the above divalent aromatic ring groups include groups in which one or more ring groups are linked.
- the number of divalent aliphatic groups is not particularly limited, but is usually 1 or more and 2 or more, usually 10 or less and 5 or less, and more preferably 3 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- the number of divalent aromatic ring groups is not particularly limited, but is usually 1 or more and 2 or more, usually 10 or less and 5 or less, and more preferably 3 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- the group in which one or more divalent aliphatic groups and one or more divalent aromatic ring groups are linked include groups represented by the above formulas (iA) to (ie) Are listed. Among these, the group represented by the above formula (iC) is preferable from the viewpoint of reliability.
- the bonding mode of the cyclic hydrocarbon group which is a side chain with respect to these divalent hydrocarbon groups is not particularly limited, but for example, one hydrogen atom of an aliphatic group or an aromatic ring group is substituted with the side chain. And a mode in which a cyclic hydrocarbon group that is a side chain is configured to include one of the carbon atoms of the aliphatic group.
- the partial structure represented by the formula (ii) is preferably a partial structure represented by the following formula (ii-1) from the viewpoint of compatibility.
- R c has the same meaning as the above formula (ii).
- R ⁇ represents a monovalent cyclic hydrocarbon group which may have a substituent.
- n is an integer of 1 or more. * Represents a bond.
- the benzene ring in formula (ii-1) may be further substituted with any substituent.
- R ⁇ represents a monovalent cyclic hydrocarbon group which may have a substituent.
- the cyclic hydrocarbon group include an aliphatic ring group and an aromatic ring group.
- the number of rings contained in the aliphatic ring group is not particularly limited, but is usually 1 or more and 2 or more, and usually 6 or less, 4 or less, and more preferably 3 or less.
- 1 to 6 is preferable, 1 to 4 is more preferable, 1 to 3 is further preferable, and 2 to 3 is even more preferable.
- the number of carbon atoms of the aliphatic ring group is usually 4 or more, preferably 6 or more, more preferably 8 or more, and preferably 40 or less, more preferably 30 or less, further preferably 20 or less, particularly 15 or less. preferable.
- the aliphatic ring in the aliphatic ring group include a cyclohexane ring, a cycloheptane ring, a cyclodecane ring, a cyclododecane ring, a norbornane ring, an isobornane ring and an adamantane ring.
- the adamantane ring is preferable from the viewpoint of compatibility.
- the number of rings contained in the aromatic ring group is not particularly limited, but is usually 1 or more, 2 or more, preferably 3 or more, and usually 10 or less, 5 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 2 to 5 is further preferable, and 3 to 5 is even more preferable.
- the aromatic ring group include an aromatic hydrocarbon ring group and an aromatic heterocyclic group.
- the carbon number of the aromatic ring group is usually 4 or more, preferably 5 or more, more preferably 6 or more, and , 30 or less are preferred, 20 or less are more preferred, and 15 or less are even more preferred.
- 4 to 30 is preferable, 5 to 20 is more preferable, and 6 to 15 is further preferable.
- the aromatic ring in the aromatic ring group include a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a fluorene ring and the like. Among these, a fluorene ring is preferable from the viewpoint of reliability.
- Examples of the substituent that the cyclic hydrocarbon group may have include a hydroxyl group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, a tert-butyl group, Examples thereof include an alkyl group having 1 to 5 carbon atoms such as amyl group and iso-amyl group; an alkoxy group having 1 to 5 carbon atoms such as methoxy group and ethoxy group; nitro group; cyano group; and carboxyl group. From the viewpoint of ease of synthesis, unsubstituted is preferable.
- N represents an integer of 1 or more, preferably 2 or more, and preferably 3 or less. For example, 1 to 1 is preferable, and 2 to 3 is more preferable. When it is at least the above lower limit, development adhesion tends to be good, and when it is at most the above upper limit, curability tends to be good.
- R ⁇ is preferably a monovalent aliphatic ring group, and more preferably an adamantyl group.
- the benzene ring in formula (ii-1) may be further substituted with any substituent.
- substituents include a hydroxyl group, a methyl group, a methoxy group, an ethyl group, an ethoxy group, a propyl group and a propoxy group.
- the number of substituents is not particularly limited and may be one or two or more. From the viewpoint of patterning characteristics, it is preferably unsubstituted.
- partial structure represented by the formula (ii) is preferably a partial structure represented by the following formula (ii-2) from the viewpoint of reliability.
- R c has the same meaning as the above formula (ii).
- R ⁇ represents a divalent cyclic hydrocarbon group which may have a substituent. * Represents a bond.
- the benzene ring in formula (ii-2) may be further substituted with any substituent.
- R ⁇ represents a divalent cyclic hydrocarbon group which may have a substituent.
- the cyclic hydrocarbon group include an aliphatic ring group and an aromatic ring group.
- the number of rings contained in the aliphatic ring group is not particularly limited, but is usually preferably 1 or more and 2 or more, and is usually 10 or less and 5 or less. For example, 1 to 10 is preferable, 1 to 5 is more preferable, and 2 to 5 is further preferable. When it is at least the above lower limit, development adhesion tends to be good, and when it is at most the above upper limit, curability tends to be good.
- the carbon number of the aliphatic ring group is usually 4 or more, preferably 6 or more, more preferably 8 or more, and preferably 40 or less, more preferably 35 or less, and further preferably 30 or less. For example, 4 to 40 is preferable, 6 to 35 is more preferable, and 8 to 30 is further preferable.
- the aliphatic ring in the aliphatic ring group include a cyclohexane ring, a cycloheptane ring, a cyclodecane ring, a cyclododecane ring, a norbornane ring, an isobornane ring, an adamantane ring and the like.
- the adamantane ring is preferable from the viewpoint of compatibility.
- the number of rings contained in the aromatic ring group is not particularly limited, but is usually 1 or more, 2 or more, preferably 3 or more, and usually 10 or less, 5 or less.
- 1 to 10 is preferable, 1 to 5 is more preferable, 2 to 5 is further preferable, and 3 to 5 is even more preferable.
- the aromatic ring group include an aromatic hydrocarbon ring group and an aromatic heterocyclic group.
- the aromatic ring group usually has 4 or more carbon atoms, preferably 6 or more carbon atoms, more preferably 8 or more carbon atoms.
- the above is more preferable, 40 or less is preferable, 30 or less is more preferable, 20 or less is further preferable, and 15 or less is particularly preferable.
- 4 to 40 is preferable, 6 to 30 is more preferable, 8 to 20 is further preferable, and 10 to 15 is particularly preferable.
- the aromatic ring in the aromatic ring group include a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a fluorene ring and the like.
- a fluorene ring is preferable from the viewpoint of reliability.
- Examples of the substituent that the cyclic hydrocarbon group may have include a hydroxyl group, a methyl group, an ethyl group, an n-propyl group, an iso-propyl group, an n-butyl group, a sec-butyl group, a tert-butyl group, Examples thereof include an alkyl group having 1 to 5 carbon atoms such as amyl group and iso-amyl group; an alkoxy group having 1 to 5 carbon atoms such as methoxy group and ethoxy group; nitro group; cyano group; and carboxyl group. From the viewpoint of ease of synthesis, unsubstituted is preferable.
- R ⁇ is preferably a divalent aliphatic ring group, and more preferably a divalent adamantane ring group.
- R ⁇ is preferably a divalent aromatic ring group, and more preferably a divalent fluorene ring group.
- the benzene ring in formula (ii-2) may be further substituted with any substituent.
- substituents include a hydroxyl group, a methyl group, a methoxy group, an ethyl group, an ethoxy group, a propyl group and a propoxy group.
- the number of substituents is not particularly limited and may be one or two or more.
- the two benzene rings in formula (ii-2) may be linked via these substituents. From the viewpoint of patterning characteristics, it is preferably unsubstituted.
- the partial structure represented by the formula (ii) is preferably a partial structure represented by the following formula (ii-3) from the viewpoint of compatibility.
- R c and R d have the same meaning as in the formula (ii).
- R Z represents a hydrogen atom or a polybasic acid residue.
- the polybasic acid residue means a monovalent group obtained by removing one OH group from a polybasic acid or its anhydride. Further, another OH group may be removed and shared with R Z in another molecule represented by the formula (ii-3), that is, a plurality of formula (ii-3 may be introduced via R Z. ) May be linked.
- polybasic acids include maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, benzophenonetetracarboxylic acid, methylhexahydrophthalic acid, endomethylenetetrahydrophthalic acid.
- Examples thereof include one or more selected from acids, chlorendic acid, methyltetrahydrophthalic acid, and biphenyltetracarboxylic acid.
- the polybasic acid is preferably maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, biphenyltetracarboxylic acid. Acids, and more preferably tetrahydrophthalic acid and biphenyltetracarboxylic acid.
- the partial structure represented by the formula (ii-3) contained in one molecule of the epoxy (meth)acrylate resin (b1-B) may be one kind or two or more kinds, for example, R X is a hydrogen atom. And those having R Z as a polybasic acid residue may be mixed.
- the number of partial structures represented by the formula (ii) contained in one molecule of the epoxy (meth)acrylate resin (b1-B) is not particularly limited, but is preferably 1 or more, more preferably 3 or more. Further, 20 or less is preferable, 15 or less is more preferable, and 10 or less is further preferable. For example, 1 to 20 is preferable, 1 to 15 is more preferable, 3 to 15 is more preferable, 3 to 10 is even more preferable. When it is at least the lower limit, the curability tends to be good, and when it is at most the upper limit, the developing solubility tends to be good.
- (b) alkali-soluble resin it is preferable to use (b2) an acrylic copolymer resin from the viewpoint of compatibility with a colorant, a dispersant and the like.
- the (b2) acrylic copolymer resin is not particularly limited as long as it is an acrylic copolymer resin containing a carboxyl group or a hydroxyl group, but it is preferable that the side chain has an ethylenically unsaturated group. By having an ethylenically unsaturated group, it is less likely that film loss due to an alkali developer will occur during development due to photocuring by exposure, and the surface roughness tends to be good.
- the partial structure containing the side chain having an ethylenically unsaturated group is not particularly limited, but the emission of radicals accompanying the flexibility of the film From the viewpoint of ease, for example, it is preferable to have a partial structure represented by the following general formula (I).
- R 1 and R 2 each independently represent a hydrogen atom or a methyl group. * Represents a bond. )
- the partial structure represented by the above formula (I) is preferable from the viewpoint of sensitivity and alkali developability.
- R 1 and R 2 each independently represent a hydrogen atom or a methyl group.
- R X represents a hydrogen atom or a polybasic acid residue.
- the polybasic acid residue means a monovalent group obtained by removing one OH group from a polybasic acid or its anhydride.
- polybasic acids include maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, benzophenonetetracarboxylic acid, methylhexahydrophthalic acid, endomethylenetetrahydrophthalic acid.
- examples thereof include one or more selected from acids, chlorendic acid, methyltetrahydrophthalic acid, and biphenyltetracarboxylic acid.
- maleic acid, succinic acid, itaconic acid, phthalic acid, tetrahydrophthalic acid, hexahydrophthalic acid, pyromellitic acid, trimellitic acid, and biphenyltetracarboxylic acid are preferable from the viewpoint of patterning characteristics, and more preferable.
- tetrahydrophthalic acid and biphenyltetracarboxylic acid are preferable from the viewpoint of patterning characteristics, and more preferable.
- the content ratio is not particularly limited, but is preferably 10 mol% or more, more preferably 30 mol% or more, and 50 mol%.
- the above is more preferable, 70 mol% or more is still more preferable, 80 mol% or more is particularly preferable, 98 mol% or less is preferable, and 95 mol% or less is more preferable.
- 10 to 98 mol% is preferable, 30 to 98 mol% is more preferable, 50 to 98 mol% is further preferable, 70 to 98 mol% is further preferable, and 80 to 95 mol% is particularly preferable.
- it is at least the lower limit mechanical properties tend to be improved, and when it is at most the upper limit, residues tend to be reduced.
- the content ratio thereof is not particularly limited, but is preferably 10 mol% or more, more preferably 30 mol% or more, and 50 It is more preferably at least mol%, further preferably at least 70 mol%, particularly preferably at least 80 mol%, preferably at most 98 mol%, more preferably at most 95 mol%.
- 10 to 98 mol% is preferable, 30 to 98 mol% is more preferable, 50 to 98 mol% is further preferable, 70 to 98 mol% is further preferable, and 80 to 95 mol% is particularly preferable.
- the alkali developability and mechanical properties tend to be good, and when it is at most the upper limit, the surface roughness is improved and the residue tends to be reduced.
- R 3 represents a hydrogen atom or a methyl group
- R 4 represents an alkyl group which may have a substituent, an aromatic ring group which may have a substituent, or a substituent.
- R 4 represents an alkyl group which may have a substituent, an aromatic ring group which may have a substituent, or an alkenyl group which may have a substituent. ..
- alkyl group for R 4 include linear, branched or cyclic alkyl groups.
- the carbon number is preferably 1 or more, more preferably 3 or more, further preferably 5 or more, particularly preferably 8 or more, and preferably 20 or less, more preferably 18 or less, further preferably 16 or less, and 14 or less. Even more preferable, and 12 or less are particularly preferable.
- 1 to 20 is preferable, 1 to 18 is more preferable, 3 to 16 is further preferable, 5 to 14 is further preferable, and 8 to 12 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- the alkyl group examples include a methyl group, an ethyl group, a cyclohexyl group, a dicyclopentanyl group, a dodecanyl group and the like.
- a dicyclopentanyl group or a dodecanyl group is preferable, and a dicyclopentanyl group is more preferable, from the viewpoint of developability.
- the substituent that the alkyl group may have is a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group, an oligoethylene glycol group, a phenyl group, a carboxyl group.
- An acryloyl group, a methacryloyl group, and the like, and a hydroxy group and an oligoethylene glycol group are preferable from the viewpoint of developability.
- Examples of the aromatic ring group for R 4 include a monovalent aromatic hydrocarbon ring group and a monovalent aromatic heterocyclic group.
- the carbon number is preferably 6 or more, more preferably 24 or less, more preferably 22 or less, further preferably 20 or less, particularly preferably 18 or less.
- 6 to 24 is preferable, 6 to 22 is more preferable, 6 to 20 is further preferable, and 6 to 18 is particularly preferable.
- the aromatic hydrocarbon ring in the aromatic hydrocarbon ring group may be a single ring or a condensed ring, and examples thereof include a benzene ring, a naphthalene ring, an anthracene ring, a phenanthrene ring, a perylene ring, a tetracene ring, and a pyrene. Examples thereof include a ring, a benzpyrene ring, a chrysene ring, a triphenylene ring, an acenaphthene ring, a fluoranthene ring and a fluorene ring.
- the aromatic heterocyclic group in the aromatic heterocyclic group may be a single ring or a condensed ring, and examples thereof include a furan ring, a benzofuran ring, a thiophene ring, a benzothiophene ring, a pyrrole ring and a pyrazole ring.
- a benzene ring or a naphthalene ring is preferable, and a benzene ring is more preferable, from the viewpoint of developability.
- the substituent which the aromatic ring group may have, a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group , An oligoethylene glycol group, a phenyl group, a carboxyl group, and the like, and a hydroxy group and an oligoethylene glycol group are preferable from the viewpoint of developability.
- the alkenyl group for R 4 includes a linear, branched or cyclic alkenyl group.
- the carbon number is preferably 2 or more, more preferably 22 or less, more preferably 20 or less, further preferably 18 or less, even more preferably 16 or less, and particularly preferably 14 or less.
- 2 to 22 is preferable, 2 to 20 is more preferable, 2 to 18 is further preferable, 2 to 16 is even more preferable, and 2 to 14 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- the substituent which the alkenyl group may have includes a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group, and an oligo group.
- Examples thereof include an ethylene glycol group, a phenyl group and a carboxyl group. From the viewpoint of developability, a hydroxy group and an oligoethylene glycol group are preferable.
- R 4 represents an alkyl group which may have a substituent, an aryl group which may have a substituent, or an alkenyl group which may have a substituent. From the viewpoint of developability and film strength, an alkyl group or alkenyl is preferable, and an alkyl group is more preferable.
- the content ratio thereof is not particularly limited, but is preferably 0.1 mol% or more, and more preferably 0.5 mol% or more. 1 mol% or more is more preferable, 70 mol% or less is preferable, 50 mol% or less is more preferable, 30 mol% or less is further preferable, and 10 mol% or less is particularly preferable. For example, 0.1 to 70 mol% is preferable, 0.1 to 50 mol% is more preferable, 0.5 to 30 mol% is further preferable, and 1 to 10 mol% is particularly preferable. When the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- R 5 represents a hydrogen atom or a methyl group
- R 6 has an alkyl group which may have a substituent, an alkenyl group which may have a substituent, and a substituent.
- Optionally represents an alkynyl group, a hydroxyl group, a carboxyl group, a halogen atom, an alkoxy group which may have a substituent, a thiol group, or an alkylsulfide group which may have a substituent.
- t represents an integer of 0 to 5.
- R 6 is an alkyl group which may have a substituent, an alkenyl group which may have a substituent, an alkynyl group which may have a substituent, a hydroxyl group, a carboxyl group. Represents a halogen atom, an alkoxy group which may have a substituent, a thiol group, or an alkylsulfide group which may have a substituent.
- alkyl group for R 6 include linear, branched or cyclic alkyl groups.
- the number of carbon atoms is preferably 1 or more, more preferably 3 or more, further preferably 5 or more, preferably 20 or less, more preferably 18 or less, further preferably 16 or less, still more preferably 14 or less, and 12 or less. Is particularly preferable. For example, 1 to 20 is preferable, 3 to 18 is more preferable, 3 to 16 is further preferable, 5 to 14 is further preferable, and 5 to 12 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- alkyl group examples include a methyl group, an ethyl group, a cyclohexyl group, a dicyclopentanyl group, a dodecanyl group and the like.
- a dicyclopentanyl group or a dodecanyl group is preferable, and a dicyclopentanyl group is more preferable, from the viewpoints of developability and surface roughness.
- the substituent which the alkyl group may have, methoxy group, ethoxy group, chloro group, bromo group, fluoro group, hydroxy group, amino group, epoxy group, oligoethylene glycol group, phenyl group, carboxyl group , An acryloyl group, a methacryloyl group, and the like, and a hydroxy group and an oligoethylene glycol group are preferable from the viewpoint of developability.
- the alkenyl group for R 6 includes a linear, branched or cyclic alkenyl group.
- the carbon number is preferably 2 or more, more preferably 22 or less, more preferably 20 or less, further preferably 18 or less, even more preferably 16 or less, and particularly preferably 14 or less.
- 2 to 22 is preferable, 2 to 20 is more preferable, 2 to 18 is further preferable, 2 to 16 is even more preferable, and 2 to 14 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- the substituent which the alkenyl group may have includes a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group, and an oligo group.
- Examples thereof include an ethylene glycol group, a phenyl group and a carboxyl group. From the viewpoint of developability, a hydroxy group and an oligoethylene glycol group are preferable.
- Examples of the alkynyl group for R 6 include a linear, branched or cyclic alkynyl group.
- the carbon number is preferably 2 or more, more preferably 22 or less, more preferably 20 or less, further preferably 18 or less, even more preferably 16 or less, and particularly preferably 14 or less.
- 2 to 22 is preferable, 2 to 20 is more preferable, 2 to 18 is further preferable, 2 to 16 is even more preferable, and 2 to 14 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- the substituent which the alkynyl group may have, a methyl group, an ethyl group, a propyl group, a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group, an oligo group.
- substituents which the alkynyl group include an ethylene glycol group, a phenyl group and a carboxyl group. From the viewpoint of developability, a hydroxy group and an oligoethylene glycol group are preferable.
- halogen atom in R 6 examples include a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, and among these, a fluorine atom is preferable from the viewpoint of ink repellency.
- alkoxy group for R 6 examples include linear, branched or cyclic alkoxy groups.
- the carbon number is preferably 1 or more, preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, even more preferably 14 or less, and particularly preferably 12 or less.
- 1 to 20 is preferable, 1 to 18 is more preferable, 1 to 16 is further preferable, 1 to 14 is further preferable, and 1 to 12 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- the substituent which the alkoxy group may have, a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group, an oligoethylene glycol group, a phenyl group, a carboxyl group.
- An acryloyl group, a methacryloyl group, and the like, and a hydroxy group and an oligoethylene glycol group are preferable from the viewpoint of developability.
- alkyl sulfide group for R 6 examples include linear, branched or cyclic alkyl sulfide groups.
- the carbon number is preferably 1 or more, preferably 20 or less, more preferably 18 or less, still more preferably 16 or less, even more preferably 14 or less, and particularly preferably 12 or less.
- 1 to 20 is preferable, 1 to 18 is more preferable, 1 to 16 is further preferable, 1 to 14 is further preferable, and 1 to 12 is particularly preferable.
- the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- the substituent which the alkyl group in the alkyl sulfide group may have is a methoxy group, an ethoxy group, a chloro group, a bromo group, a fluoro group, a hydroxy group, an amino group, an epoxy group, an oligoethylene glycol group, phenyl.
- a carboxyl group, an acryloyl group, a methacryloyl group, and the like, and a hydroxy group and an oligoethylene glycol group are preferable from the viewpoint of developability.
- R 6 is an alkyl group which may have a substituent, an alkenyl group which may have a substituent, an alkynyl group which may have a substituent, a hydroxyl group, a carboxyl group, a halogen group.
- An atom, an alkoxy group, a hydroxyalkyl group, a thiol group, or an alkylsulfide group which may have a substituent is represented, and among these, from the viewpoint of developability, a hydroxyl group or a carboxyl group is preferable, and a carboxyl group is more preferable. preferable.
- t represents an integer of 0 to 5, but t is preferably 0 from the viewpoint of easiness of synthesis.
- the content ratio thereof is not particularly limited, but is preferably 0.5 mol% or more, more preferably 1 mol% or more, It is more preferably 2 mol% or more. Moreover, 50 mol% or less is preferable, 30 mol% or less is more preferable, 20 mol% or less is further preferable, and 10 mol% or less is more preferable. For example, 0.5 to 50 mol% is preferable, 1 to 30 mol% is more preferable, 1 to 20 mol% is further preferable, and 2 to 10 mol% is more preferable. When the content is at least the lower limit, the surface roughness tends to be improved, and when it is at most the upper limit, the residue tends to be reduced.
- R 7 represents a hydrogen atom or a methyl group.
- the content ratio thereof is not particularly limited, but is preferably 5 mol% or more, more preferably 10 mol% or more, and 20 mol%. % Or more, more preferably 80 mol% or less, further preferably 70 mol% or less, and further preferably 60% mol or less.
- 5 to 80 mol% is preferable, 10 to 70 mol% is more preferable, and 20 to 60% mol is further preferable.
- the developability tends to be improved, and when it is at most the upper limit, the surface roughness tends to be improved.
- the acid value of the (b2) acrylic copolymer resin is not particularly limited, but 10 mgKOH/g or more is preferable, 15 mgKOH/g or more is more preferable, 20 mgKOH/g or more is further preferable, and 150 mgKOH/g or less is preferable. , 120 mgKOH/g or less is more preferable, 100 mgKOH/g or less is still more preferable, and 50 mgKOH/g or less is still more preferable. For example, 10 to 150 mgKOH/g is preferable, 10 to 120 mgKOH/g is more preferable, 15 to 100 mgKOH/g is further preferable, and 20 to 50 mgKOH/g is even more preferable. When it is at least the lower limit, the developability tends to be improved, and when it is at most the upper limit, the surface roughness tends to be improved.
- the weight average molecular weight (Mw) of the (b2) acrylic copolymer resin is not particularly limited, but is usually 1000 or more, preferably 2000 or more, more preferably 4000 or more, still more preferably 6000 or more, still more preferably 7,000 or more, and particularly preferably. Is 8,000 or more, and is usually 30,000 or less, preferably 20,000 or less, more preferably 15,000 or less, still more preferably 10,000 or less.
- 1000 to 20000 is preferable, 2000 to 20000 is more preferable, 4000 to 15000 is further preferable, 6000 to 15000 is still more preferable, 7000 to 10000 is particularly preferable, and 8000 to 10000 is particularly preferable.
- the surface roughness tends to be improved, and when it is at most the upper limit, the developability tends to be good.
- the double bond equivalent of the acrylic copolymer resin is not particularly limited, but is preferably 500 or less, more preferably 400 or less, further preferably 350 or less, particularly preferably 300 or less, and preferably 100 or more, 150 or more. Is more preferable, 180 or more is further preferable, and 200 or more is particularly preferable. For example, 100 to 500 is preferable, 150 to 400 is more preferable, 180 to 350 is further preferable, and 200 to 300 is particularly preferable. When it is at most the upper limit, mechanical properties and surface roughness will tend to improve, and when it is at least the lower limit, storage stability will tend to improve.
- (b2) acrylic copolymer resin examples include resins described in JP-A-8-297366 and JP-A-2001-89533.
- the (c) photopolymerization initiator is a component having a function of directly absorbing light, causing a decomposition reaction or a hydrogen abstraction reaction, and generating a polymerization active radical. If necessary, an addition agent such as a polymerization accelerator (chain transfer agent) or a sensitizing dye may be added and used. Examples of the photopolymerization initiator include metallocene compounds containing a titanocene compound described in JP-A-59-152396 and JP-A-61-151197; JP-A-2000-56118.
- N-aryl- ⁇ -amino acids such as halomethylated oxadiazole derivatives, halomethyl-s-triazine derivatives, N-phenylglycine and the like described in JP-A-10-39503, N- Radical activators such as aryl- ⁇ -amino acid salts and N-aryl- ⁇ -amino acid esters, ⁇ -aminoalkylphenone derivatives; JP-A 2000-80068, JP-A 2006-36750, etc.
- the oxime ester compounds described and the like can be mentioned.
- a hexaarylbiimidazole compound is particularly preferable from the viewpoint of improving mechanical properties and surface roughness.
- hexaarylbiimidazole compound a hexaarylbiimidazole-based photoradical initiator represented by the following general formula (1-1) and/or the following general formula (1-2) is preferable from the viewpoint of mechanical properties.
- R 1 to R 3 are each independently an alkyl group having 1 to 4 carbon atoms which may have a substituent, an alkoxy group having 1 to 4 carbon atoms which may have a substituent, or halogen.
- l, m and n each independently represent an integer of 0-5.
- the carbon number of the alkyl group of R 1 to R 3 is not particularly limited as long as it is within the range of 1 to 4, but from the viewpoint of mechanical properties, it is preferably 3 or less, more preferably 2 or less.
- the alkyl group may be chain-shaped or cyclic. Specific examples of the alkyl group include, for example, a methyl group, an ethyl group, a propyl group and an isopropyl group, and among them, a methyl group and an ethyl group are preferable.
- the alkyl group having 1 to 4 carbon atoms of R 1 to R 3 may have, a monovalent non-metal atomic group group other than hydrogen is used, and a preferable example thereof is a halogen atom (- F, —Br, —Cl, —I), a hydroxyl group and an alkoxy group.
- a monovalent non-metal atomic group group other than hydrogen is used, and a preferable example thereof is a halogen atom (- F, —Br, —Cl, —I), a hydroxyl group and an alkoxy group.
- the number of carbon atoms of the alkoxy group of R 1 to R 3 is not particularly limited as long as it is within the range of 1 to 4, but from the viewpoint of increasing the taper angle, it is preferably 3 or less, more preferably 2 or less.
- the alkyl group portion of the alkoxy group may be linear or cyclic. Specific examples of the alkoxy group include, for example, a methoxy group, an ethoxy group, a propoxy group, an isopropyloxy group and a butoxy group, and among them, a methoxy group and an ethoxy group are preferable.
- Examples of the substituent which the alkoxy group having 1 to 4 carbon atoms represented by R 1 to R 3 may have include an alkyl group and an alkoxy group, and an alkyl group is preferable.
- the halogen atom represented by R 1 to R 3 includes, for example, a chlorine atom, an iodine atom, a bromine atom, and a fluorine atom. Among them, a chlorine atom or a fluorine atom is preferable, and a chlorine atom is more preferable, from the viewpoint of easy synthesis. preferable. Among these, from the viewpoint of sensitivity and ease of synthesis, R 1 to R 3 are preferably each independently a halogen atom, and more preferably a chlorine atom.
- n, n and l each independently represent an integer of 0 to 5, but from the viewpoint of ease of synthesis, at least two of m, n and l are preferably integers of 1 or more, and m, n and l It is more preferable that any two of them are 1 and the other one is 0.
- Examples of the hexaarylbiimidazole compound represented by the general formula (1-1) and/or the general formula (1-2) include 2,2′-bis(o-chlorophenyl)-4,5,4′, 5'-tetraphenylbiimidazole, 2,2'-bis(o-methylphenyl)-4,5,4',5'-tetraphenylbiimidazole, 2,2'-bis(o-chlorophenyl)-4, 4',5,5'-tetra(o,p-dichlorophenyl)biimidazole, 2,2'-bis(o,p-dichlorophenyl)-4,4',5,5'-tetra(o,p-dichlorophenyl) ) Biimidazole, 2,2'-bis(o-chlorophenyl)-4,4',5,5'-tetra(p-fluorophenyl)biimidazole, 2,2'-bis(
- a hexaphenylbiimidazole compound is preferable, and a compound in which the o-position of the benzene ring bonded to the 2,2′-position on the imidazole ring is substituted with a methyl group, a methoxy group, or a halogen atom is more preferable. It is preferable that the benzene ring bonded to the 4,4',5,5'-position on the imidazole ring is unsubstituted or substituted with a halogen atom or a methoxy group.
- the photopolymerization initiator (c) either a hexaarylbiimidazole compound represented by the general formula (1-1) or a hexaarylbiimidazole compound represented by the general formula (1-2) may be used. , And both may be used together. When used in combination, the ratio is not particularly limited.
- titanocene derivatives include dicyclopentadienyl titanium dichloride, dicyclopentadienyl titanium bisphenyl, dicyclopentadienyl titanium bis(2,3,4,5,6-pentafluorophenyl), and dicyclopentadiene.
- halomethylated oxadiazole derivatives include 2-trichloromethyl-5-(2'-benzofuryl)-1,3,4-oxadiazole and 2-trichloromethyl-5-[ ⁇ -(2'- Benzofuryl)vinyl]-1,3,4-oxadiazole, 2-trichloromethyl-5-[ ⁇ -(2′-(6′′-benzofuryl)vinyl)]-1,3,4-oxadiazole, 2-trichloromethyl-5-furyl-1,3,4-oxadiazole and the like can be mentioned.
- halomethyl-s-triazine derivatives include 2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-s-triazine and 2-(4-methoxynaphthyl)-4,6-bis( Trichloromethyl)-s-triazine, 2-(4-ethoxynaphthyl)-4,6-bis(trichloromethyl)-s-triazine, 2-(4-ethoxycarbonylnaphthyl)-4,6-bis(trichloromethyl) -S-triazine and the like can be mentioned.
- examples of ⁇ -aminoalkylphenone derivatives include 2-methyl-1-[4-(methylthio)phenyl]-2-morpholinopropan-1-one and 2-benzyl-2-dimethylamino-1-(4 -Morpholinophenyl)butan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, 4-dimethylaminoethylbenzoate, 4-dimethylaminoisoamyl Benzoate, 4-diethylaminoacetophenone, 4-dimethylaminopropiophenone, 2-ethylhexyl-1,4-dimethylaminobenzoate, 2,5-bis(4-diethylaminobenzal)cyclohexanone, 7-diethylamino-3- Examples include (4-diethylaminobenzoyl)coumarin and 4-(diethylamino)chalcone.
- Examples of the oxime ester compound include compounds represented by the following general formula (IV).
- R 21a represents a hydrogen atom, an alkyl group which may have a substituent, or an aromatic ring group which may have a substituent.
- R 21b represents an arbitrary substituent containing an aromatic ring.
- R 22a represents an alkanoyl group which may have a substituent or an aryloyl group which may have a substituent.
- n represents an integer of 0 or 1.
- the carbon number of the alkyl group in R 21a is not particularly limited, but is usually 1 or more, preferably 2 or more, and usually 20 or less, preferably 15 or less, more preferably 10 or less from the viewpoint of solubility in a solvent and sensitivity. Is. For example, 1 to 20 is preferable, 1 to 15 is more preferable, 1 to 10 is further preferable, and 2 to 10 is even more preferable.
- Specific examples of the alkyl group include a methyl group, an ethyl group, a propyl group, a cyclopentylethyl group, a propyl group and the like.
- the substituent which the alkyl group may have is an aromatic ring group, a hydroxyl group, a carboxyl group, a halogen atom, an amino group, an amide group, 4-(2-methoxy-1-methyl)ethoxy-2-methylphenyl.
- Examples of the aromatic ring group for R 21a include an aromatic hydrocarbon ring group and an aromatic heterocyclic group.
- the carbon number of the aromatic ring group is not particularly limited, but is preferably 5 or more from the viewpoint of solubility in the photosensitive coloring composition. Further, from the viewpoint of developability, it is preferably 30 or less, more preferably 20 or less, still more preferably 12 or less. For example, 5 to 30 is preferable, 5 to 20 is more preferable, and 5 to 12 is further preferable.
- aromatic ring group examples include a phenyl group, a naphthyl group, a pyridyl group, a furyl group and the like. Among these, from the viewpoint of developability, a phenyl group or a naphthyl group is preferable, and a phenyl group is more preferable.
- substituent that the aromatic ring group may have include a hydroxyl group, a carboxyl group, a halogen atom, an amino group, an amide group, an alkyl group, an alkoxy group, a group in which these substituents are linked, and the like.
- R 21a is preferably an aromatic ring group which may have a substituent, and more preferably an aromatic ring group having a linked alkoxy group as a substituent. preferable.
- R 21b is preferably an optionally substituted carbazolyl group, an optionally substituted thioxanthonyl group or an optionally substituted diphenyl sulfide group.
- an optionally substituted carbazolyl group is preferable from the viewpoint of sensitivity.
- the carbon number of the alkanoyl group in R 22a is not particularly limited, but is usually 2 or more, preferably 3 or more, and usually 20 or less, preferably 15 or less, more preferably from the viewpoint of solubility in a solvent and sensitivity. It is 10 or less, more preferably 5 or less.
- 2 to 20 is preferable, 2 to 15 is more preferable, 2 to 10 is further preferable, 2 to 5 is further preferable, and 3 to 5 is particularly preferable.
- Specific examples of the alkanoyl group include an acetyl group, a propanoyl group and a butanoyl group.
- Examples of the substituent which the alkanoyl group may have include an aromatic ring group, a hydroxyl group, a carboxyl group, a halogen atom, an amino group and an amide group, and from the viewpoint of ease of synthesis, it is unsubstituted. Is preferred.
- the carbon number of the aryloyl group in R 22a is not particularly limited, but is usually 7 or more, preferably 8 or more, and usually 20 or less, preferably 15 or less, more preferably from the viewpoint of solubility in a solvent and sensitivity. It is 12 or less, more preferably 10 or less. For example, 7 to 20 is preferable, 7 to 15 is more preferable, 7 to 12 is further preferable, and 8 to 12 is even more preferable.
- Specific examples of the aryloyl group include a benzoyl group and a naphthoyl group.
- R 22a is preferably an alkanoyl group which may have a substituent, more preferably an unsubstituted alkanoyl group, and further preferably an acetyl group.
- the initiator described in Japanese Patent Laid-Open No. 2016-133574 is also preferably used from the viewpoint that the contamination of the liquid crystal layer by the colorant is reduced.
- the photopolymerization initiator may be used alone or in combination of two or more kinds. If necessary, the photopolymerization initiator may be blended with a sensitizing dye or a polymerization accelerator depending on the wavelength of the image exposure light source for the purpose of increasing the sensitivity.
- the sensitizing dyes include xanthene dyes described in JP-A-4-221958 and JP-A-4-219756, JP-A-3-239703, and JP-A-5-289335.
- sensitizing dyes containing an amino group
- compounds having an amino group and a phenyl group in the same molecule Particularly preferred are, for example, 4,4′-dimethylaminobenzophenone, 4,4′-diethylaminobenzophenone, 2-aminobenzophenone, 4-aminobenzophenone, 4,4′-diaminobenzophenone, 3,3′-diaminobenzophenone.
- Benzophenone compounds such as 3,4-diaminobenzophenone; 2-(p-dimethylaminophenyl)benzoxazole, 2-(p-diethylaminophenyl)benzoxazole, 2-(p-dimethylaminophenyl)benzo[4,5 ] Benzoxazole, 2-(p-dimethylaminophenyl)benzo[6,7]benzoxazole, 2,5-bis(p-diethylaminophenyl)-1,3,4-oxazole, 2-(p-dimethylaminophenyl) ) Benzothiazole, 2-(p-diethylaminophenyl)benzothiazole, 2-(p-dimethylaminophenyl)benzimidazole, 2-(p-diethylaminophenyl)benzimidazole, 2,5-bis(p-diethylaminophenyl)- 1,3,4-thiadiazole, (p-
- polymerization accelerator examples include aromatic amines such as ethyl p-dimethylaminobenzoate and 2-dimethylaminoethyl benzoate, aliphatic amines such as n-butylamine and N-methyldiethanolamine, and mercapto compounds described below.
- aromatic amines such as ethyl p-dimethylaminobenzoate and 2-dimethylaminoethyl benzoate
- aliphatic amines such as n-butylamine and N-methyldiethanolamine
- mercapto compounds described below.
- the polymerization accelerators may be used alone or in combination of two or more.
- the photosensitive coloring composition of the present invention contains (d) an ethylenically unsaturated compound.
- the ethylenically unsaturated compound used in the present invention is a compound having at least one ethylenically unsaturated group in the molecule. Specifically, for example, (meth)acrylic acid, (meth)acrylic acid alkyl ester, acrylonitrile, styrene, and a carboxylic acid having one ethylenically unsaturated bond, and a monoester of polyhydric or monohydric alcohol, etc. Can be mentioned.
- a polyfunctional ethylenic monomer having two or more ethylenically unsaturated groups in one molecule is particularly preferable to use.
- the number of ethylenically unsaturated groups contained in the polyfunctional ethylenic monomer is not particularly limited, but is usually 2 or more, preferably 4 or more, more preferably 5 or more, and preferably It is 8 or less, more preferably 7 or less.
- 2 to 8 are preferred
- 4 to 8 are more preferred
- 4 to 7 are still more preferred
- 5 to 7 are even more preferred.
- polyfunctional ethylenic monomer examples include, for example, an ester of an aliphatic polyhydroxy compound and an unsaturated carboxylic acid; an ester of an aromatic polyhydroxy compound and an unsaturated carboxylic acid; an aliphatic polyhydroxy compound, an aromatic polyhydroxy compound.
- esters obtained by the esterification reaction of a polyvalent hydroxy compound such as a hydroxy compound with an unsaturated carboxylic acid and a polybasic carboxylic acid.
- ester of the aliphatic polyhydroxy compound and the unsaturated carboxylic acid ethylene glycol diacrylate, triethylene glycol diacrylate, trimethylolpropane triacrylate, trimethylolethane triacrylate, pentaerythritol diacrylate, pentaerythritol triacrylate, Acrylic acid esters of aliphatic polyhydroxy compounds such as pentaerythritol tetraacrylate, dipentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate and glycerol acrylate, and methacrylic acid esters obtained by replacing the acrylates of these exemplified compounds with methacrylates. Similarly, itaconic acid ester replaced with itaconate, crotonic acid ester replaced with clonate, maleic acid ester replaced with maleate, and the like can be mentioned.
- ester of an aromatic polyhydroxy compound and an unsaturated carboxylic acid examples include an acrylic ester and a methacrylic ester of an aromatic polyhydroxy compound such as hydroquinone diacrylate, hydroquinone dimethacrylate, resorcin diacrylate, resorcin dimethacrylate, and pyrogallol triacrylate. Etc.
- the ester obtained by the esterification reaction of a polybasic carboxylic acid and an unsaturated carboxylic acid, and a polyvalent hydroxy compound is not necessarily a single substance, but typical representative examples include acrylic acid, phthalic acid, and Examples thereof include condensates of ethylene glycol, acrylic acid, maleic acid, and condensates of diethylene glycol, condensates of methacrylic acid, terephthalic acid and pentaerythritol, condensates of acrylic acid, adipic acid, butanediol and glycerin.
- polyfunctional ethylenic monomer used in the present invention include reacting a polyisocyanate compound with a hydroxyl group-containing (meth)acrylic acid ester or a polyisocyanate compound with a polyol and a hydroxyl group-containing (meth)acrylic acid ester.
- urethane (meth)acrylates examples include DPHA-40H, UX-5000, UX-5002D-P20, UX-5003D, UX-5005 (manufactured by Nippon Kayaku Co., Ltd.), U-2PPA, U-6LPA, U.
- (meth)acrylic acid alkyl ester as the (d) ethylenically unsaturated compound, and it is more preferable to use dipentaerythritol hexaacrylate. These may be used alone or in combination of two or more.
- the photosensitive coloring composition of the present invention may contain (e) a solvent.
- the photosensitive coloring composition of the present invention is usually used (a) a colorant, (b) an alkali-soluble resin, (c) a photopolymerization initiator, and (d) an ethylenically unsaturated compound, and if necessary.
- Other compounding ingredients are used in a state of being dissolved or dispersed in a solvent.
- organic solvents are preferable from the viewpoint of dispersibility and coatability.
- an organic solvent having a boiling point in the range of 100 to 300° C. is preferable, and an organic solvent having a boiling point in the range of 120 to 280° C. is more preferable from the viewpoint of coatability.
- the boiling point mentioned here means the boiling point at a pressure of 1013.25 hPa, and the same applies to the following boiling points.
- Examples of such an organic solvent include the following. Ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol mono-n-butyl ether, propylene glycol-t-butyl ether, diethylene glycol monomethyl ether Ether, diethylene glycol monoethyl ether, diethylene glycol mono-n-butyl ether, methoxymethyl pentanol, dipropylene glycol monoethyl ether, dipropylene glycol monomethyl ether, 3-methoxybutanol, 3-methyl-3-methoxybutanol, triethylene glycol monomethyl Glycol monoalkyl ethers such as ether, triethylene glycol monoethyl ether, tripropylene glycol methyl ether; Glycol dialkyl ethers such
- acetone Like acetone, methyl ethyl ketone, methyl amyl ketone, methyl isopropyl ketone, methyl isoamyl ketone, diisopropyl ketone, diisobutyl ketone, methyl isobutyl ketone, cyclohexanone, ethyl amyl ketone, methyl butyl ketone, methyl hexyl ketone, methyl nonyl ketone, methoxymethyl pentanone Ketones; Monohydric or polyhydric alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, propylene glycol, butanediol, diethylene glycol, dipropylene glycol, triethylene glycol, methoxymethylpentanol, glycerin, benzyl alcohol; Aliphatic hydrocarbons such as n-pentan
- Aromatic hydrocarbons such as benzene, toluene, xylene, cumene; Amyl formate, ethyl formate, ethyl acetate, butyl acetate, propyl acetate, amyl acetate, methyl isobutyrate, ethylene glycol acetate, ethyl propionate, propyl propionate, butyl butyrate, isobutyl butyrate, methyl isobutyrate, ethyl Caprylate, butyl stearate, ethyl benzoate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, ethyl 3-methoxypropionate, propyl 3-methoxypropionate, 3-methoxypropionic acid Chain or cyclic esters such as butyl and ⁇ -butyrolactone; Alkoxycarboxylic acids such as 3-methoxyprop
- organic solvents corresponding to the above include mineral spirits, balsol #2, Apco #18 solvent, Apco thinner, socal solvent No. 1 and No. 1 2, Solvesso #150, Shell TS28 solvent, carbitol, ethyl carbitol, butyl carbitol, methyl cellosolve (“cellosolve” is a registered trademark; the same applies hereinafter), ethyl cellosolve, ethyl cellosolve acetate, methyl cellosolve acetate, diglyme (any of them). Product name) etc. These organic solvents may be used alone or in combination of two or more.
- the organic solvent is preferably an organic solvent having a boiling point of 100 to 200°C, more preferably 120 to 170°C.
- glycol alkyl ether acetates are preferable because they have a good balance of coating properties, surface tension and the like, and have relatively high solubility of the constituent components in the composition.
- the glycol alkyl ether acetates may be used alone or in combination with other organic solvents.
- glycol monoalkyl ethers are particularly preferable.
- propylene glycol monomethyl ether is particularly preferred because of the solubility of the constituents in the composition.
- glycol monoalkyl ethers have high polarity, and if the addition amount is too large, the pigment tends to aggregate, and the storage stability such as the viscosity of the photosensitive coloring composition obtained later tends to decrease.
- the proportion of glycol monoalkyl ethers in the solvent is preferably 5% by mass to 30% by mass, more preferably 5% by mass to 20% by mass.
- an organic solvent having a boiling point of 150° C. or higher hereinafter sometimes referred to as “high boiling point solvent”
- high boiling point solvent an organic solvent having a boiling point of 150° C. or higher
- diethylene glycol mono-n-butyl ether diethylene glycol mono-n-butyl ether acetate
- diethylene glycol monoethyl ether acetate diethylene glycol monoethyl ether acetate are particularly preferable because of the high effect.
- the content ratio of the high boiling point solvent in the organic solvent is preferably 3% by mass to 50% by mass, more preferably 5% by mass to 40% by mass, and particularly preferably 5% by mass to 30% by mass.
- the lower limit value or more for example, there is a tendency that it is possible to prevent the colorant or the like from depositing and solidifying at the tip of the slit nozzle to cause foreign matter defects, and by setting the upper limit value or less, the drying temperature of the composition. It tends to be able to suppress the delay of the cycle time, and to suppress problems such as tact failure in the vacuum drying process and pin marks of prebaking.
- the high-boiling point solvent having a boiling point of 150° C. or higher may be glycol alkyl ether acetates or glycol alkyl ethers. In this case, a high-boiling point solvent having a boiling point of 150° C. or higher may be contained separately. It doesn't matter.
- Preferred high boiling point solvents include, for example, among the above-mentioned various solvents, diethylene glycol mono-n-butyl ether acetate, diethylene glycol monoethyl ether acetate, dipropylene glycol methyl ether acetate, 1,3-butylene glycol diacetate, 1,6-hexanol diacetate. Examples thereof include acetate and triacetin.
- the photosensitive coloring composition of the present invention may contain (f) a dispersant for the purpose of finely dispersing (a) the colorant and stabilizing the dispersed state.
- a dispersant for the purpose of finely dispersing (a) the colorant and stabilizing the dispersed state.
- a polymer dispersant having a functional group is preferable, and from the viewpoint of dispersion stability, a carboxyl group; a phosphoric acid group; a sulfonic acid group; or their bases; primary, secondary or tertiary.
- a polymer dispersant having a functional group such as an amino group; a quaternary ammonium salt group; a group derived from a nitrogen-containing heterocycle such as pyridine, pyrimidine, or pyrazine is preferable.
- a polymeric dispersant having a basic functional group such as a primary, secondary, or tertiary amino group; a quaternary ammonium salt group; a group derived from a nitrogen-containing heterocycle such as pyridine, pyrimidine, or pyrazine disperses the pigment.
- a basic functional group such as a primary, secondary, or tertiary amino group
- a quaternary ammonium salt group a group derived from a nitrogen-containing heterocycle such as pyridine, pyrimidine, or pyrazine.
- polymer dispersant for example, a urethane dispersant, an acrylic dispersant, a polyethyleneimine dispersant, a polyallylamine dispersant, a dispersant comprising a monomer having an amino group and a macromonomer, polyoxyethylene alkyl ether.
- examples thereof include a system dispersant, a polyoxyethylene diester dispersant, a polyether phosphoric acid dispersant, a polyester phosphoric acid dispersant, a sorbitan aliphatic ester dispersant, and an aliphatic modified polyester dispersant.
- dispersants include EFKA (registered trademark; manufactured by BASF Corporation), DISPERBYK (registered trademark, manufactured by Big Chemie), DISPARON (registered trademark, manufactured by Kusumoto Kasei Co., Ltd.), and SOLSPERSE under trade names.
- EFKA registered trademark; manufactured by BASF Corporation
- DISPERBYK registered trademark, manufactured by Big Chemie
- DISPARON registered trademark, manufactured by Kusumoto Kasei Co., Ltd.
- SOLSPERSE SOLSPERSE under trade names.
- KP manufactured by Shin-Etsu Chemical Co., Ltd.
- Polyflow manufactured by Kyoeisha Chemical Co., Ltd.
- Azisper registered trademark, manufactured by Ajinomoto Co., Inc.
- the weight average molecular weight (Mw) of the polymer dispersant is usually 700 or more, preferably 1000 or more, and usually 100,000 or less, preferably 50,000 or less.
- Mw weight average molecular weight
- the (f) dispersant preferably contains a urethane polymer dispersant and/or an acrylic polymer dispersant having a functional group. It is particularly preferable to include.
- a polymer dispersant having a basic functional group and a polyester bond and/or a polyether bond is preferable.
- urethane-based and acrylic-based polymer dispersants examples include DISPERBYK160 to 166, 182 series (all are urethane-based), DISPERBYK2000, 2001, BYK-LPN21116 and the like (all are acrylic-based) (all of which are manufactured by Big Chemie). ..
- a preferable chemical structure as the urethane polymer dispersant for example, a polyisocyanate compound, a compound having one or two hydroxyl groups in the molecule and a number average molecular weight of 300 to 10,000, and the same molecule
- examples thereof include a dispersion resin having a weight average molecular weight of 1,000 to 200,000 obtained by reacting active hydrogen with a compound having a tertiary amino group.
- a quaternizing agent such as benzyl chloride, all or part of the tertiary amino group can be converted to a quaternary ammonium base.
- Examples of the above polyisocyanate compound include paraphenylene diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, naphthalene-1,5-diisocyanate and tolidine diisocyanate.
- Aromatic diisocyanates hexamethylene diisocyanates, lysine methyl ester diisocyanates, 2,4,4-trimethylhexamethylene diisocyanates, aliphatic diisocyanates such as dimer acid diisocyanates, isophorone diisocyanates, 4,4′-methylenebis(cyclohexyl isocyanate), ⁇ , ⁇ Aliphatic diisocyanates such as'-diisocyanate dimethylcyclohexane, xylylene diisocyanate, ⁇ , ⁇ , ⁇ ', ⁇ '-tetramethyl xylylene diisocyanate, etc., aliphatic diisocyanates having aromatic rings, lysine ester triisocyanate, 1,6, 11-undecane triisocyanate, 1,8-diisocyanate-4-isocyanatomethyl octane, 1,3,6-hexamethylene triisocyanate, bicycloheptane triis
- Examples thereof include triisocyanates, trimers thereof, water adducts, and polyol adducts thereof.
- Preferred as the polyisocyanate are trimers of organic diisocyanates, and most preferred are trimers of tolylene diisocyanate and trimers of isophorone diisocyanate. These may be used alone or in combination of two or more.
- the above-mentioned polyisocyanates are prepared by using a suitable trimerization catalyst such as tertiary amines, phosphines, alkoxides, metal oxides, carboxylates, etc.
- a suitable trimerization catalyst such as tertiary amines, phosphines, alkoxides, metal oxides, carboxylates, etc.
- polyether glycol As the compound having one or two hydroxyl groups in the same molecule and having a number average molecular weight of 300 to 10,000, polyether glycol, polyester glycol, polycarbonate glycol, polyolefin glycol and the like, and one terminal hydroxyl group of these compounds has a carbon number of 1 to 10 Examples thereof include those alkoxylated with 25 alkyl groups and mixtures of two or more of these.
- polyether glycols include polyether diols, polyether ester diols, and mixtures of two or more thereof.
- polyether diol those obtained by homopolymerizing or copolymerizing alkylene oxide, for example, polyethylene glycol, polypropylene glycol, polyethylene-propylene glycol, polyoxytetramethylene glycol, polyoxyhexamethylene glycol, polyoxyoctamethylene glycol and those And a mixture of two or more thereof.
- polyether ester diol examples include those obtained by reacting a mixture with an ether group-containing diol or another glycol with a dicarboxylic acid or an anhydride thereof, or by reacting a polyester glycol with an alkylene oxide, for example, a poly(polyether Oxytetramethylene) adipate and the like.
- the most preferable polyether glycol is polyethylene glycol, polypropylene glycol, polyoxytetramethylene glycol, or a compound in which one end hydroxyl group of these compounds is alkoxylated with an alkyl group having 1 to 25 carbon atoms.
- polyester glycol dicarboxylic acids (succinic acid, glutaric acid, adipic acid, sebacic acid, fumaric acid, maleic acid, phthalic acid, etc.) or their anhydrides and glycols (ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, Dipropylene glycol, tripropylene glycol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol, 3-methyl-1,5-pentanediol, neopentyl glycol , 2-methyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, 2-butyl-2-ethyl-1,3-propanediol, 1,5-pentanediol, 1 ,6-hexanediol, 2-methyl-2,4-pentane
- polylactone diols or polylactone monools obtained by using the above diols or monohydric alcohols having 1 to 25 carbon atoms as an initiator, for example, polycaprolactone glycol, polymethylvalerolactone and the like. Mixtures of two or more may be mentioned.
- the most preferable polyester glycol is polycaprolactone glycol or polycaprolactone having an alcohol having 1 to 25 carbon atoms as an initiator.
- Polycarbonate glycols include poly(1,6-hexylene)carbonate and poly(3-methyl-1,5-pentylene)carbonate.
- Polyolefin glycols include polybutadiene glycol, hydrogenated polybutadiene glycol and hydrogenated polyisoprene glycol. Are listed. These may be used alone or in combination of two or more.
- the number average molecular weight of the compound having one or two hydroxyl groups in the same molecule is usually 300 to 10000, preferably 500 to 6000, and more preferably 1000 to 4000.
- active hydrogen that is, a hydrogen atom directly bonded to an oxygen atom, a nitrogen atom or a sulfur atom
- active hydrogen include a hydrogen atom in a functional group such as a hydroxyl group, an amino group and a thiol group, and among them, an amino group, particularly a primary group.
- the hydrogen atom of the amino group of is preferred.
- the tertiary amino group is not particularly limited, and examples thereof include an amino group having an alkyl group having 1 to 4 carbon atoms, or a heterocyclic structure, more specifically, an imidazole ring or a triazole ring.
- Examples of such compounds having active hydrogen and a tertiary amino group in the same molecule include N,N-dimethyl-1,3-propanediamine, N,N-diethyl-1,3-propanediamine, N , N-dipropyl-1,3-propanediamine, N,N-dibutyl-1,3-propanediamine, N,N-dimethylethylenediamine, N,N-diethylethylenediamine, N,N-dipropylethylenediamine, N,N -Dibutylethylenediamine, N,N-dimethyl-1,4-butanediamine, N,N-diethyl-1,4-butanediamine, N,N-dipropyl-1
- examples of the nitrogen-containing heterocycle include a pyrazole ring, an imidazole ring, a triazole ring, a tetrazole ring, an indole ring, a carbazole ring, an indazole ring, a benzimidazole ring and benzo.
- 5-membered nitrogen-containing hetero ring such as triazole ring, benzoxazole ring, benzothiazole ring and benzothiadiazole ring
- 6-membered nitrogen-containing hetero ring such as pyridine ring, pyridazine ring, pyrimidine ring, triazine ring, quinoline ring, acridine ring and isoquinoline ring
- Preferred among these nitrogen-containing heterocycles are imidazole rings and triazole rings.
- these compounds having an imidazole ring and an amino group include 1-(3-aminopropyl)imidazole, histidine, 2-aminoimidazole, 1-(2-aminoethyl)imidazole and the like.
- Specific examples of the compound having a triazole ring and an amino group include 3-amino-1,2,4-triazole and 5-(2-amino-5-chlorophenyl)-3-phenyl-1H-1.
- a preferable mixing ratio of raw materials for producing the urethane-based polymer dispersant is 10-200 with respect to 100 parts by mass of the polyisocyanate compound, a compound having one or two hydroxyl groups in the same molecule and having a number average molecular weight of 300 to 10,000. Parts by mass, preferably 20 to 190 parts by mass, more preferably 30 to 180 parts by mass, 0.2 to 25 parts by mass, preferably 0.3 to 24 parts by mass of a compound having active hydrogen and a tertiary amino group in the same molecule. It is a mass part.
- the production of the urethane-based polymer dispersant is performed according to a known method for producing a polyurethane resin.
- the solvent during the production usually, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, cyclohexanone, ketones such as isophorone, ethyl acetate, butyl acetate, esters such as cellosolve acetate, benzene, toluene, xylene, hexane.
- Hydrocarbons such as diacetone alcohol, some alcohols such as diacetone alcohol, isopropanol, secondary butanol and tertiary butanol, chlorides such as methylene chloride and chloroform, ethers such as tetrahydrofuran and diethyl ether, dimethylformamide, N-methyl
- An aprotic polar solvent such as pyrrolidone or dimethyl sulfoxide is used. These may be used alone or in combination of two or more.
- -Urethanization reaction catalyst is usually used in the above production.
- the catalyst include tin-based compounds such as dibutyltin dilaurate, dioctyltin dilaurate, dibutyltin dioctoate and stannas octoate; iron-based compounds such as iron acetylacetonate and ferric chloride; and triethylamine and triethylenediamine. Examples include primary amines. These may be used alone or in combination of two or more.
- the amount of the compound having active hydrogen and a tertiary amino group introduced in the same molecule is preferably controlled within the range of 1 to 100 mgKOH/g based on the amine value after the reaction. More preferably, it is in the range of 5 to 95 mgKOH/g.
- the amine value is a value obtained by neutralizing and titrating a basic amino group with an acid and expressing it in mg of KOH corresponding to the acid value. When it is at least the above lower limit, the dispersibility tends to be good, and when it is at most the above upper limit, deterioration of the developability tends to be easily suppressed.
- the weight average molecular weight (Mw) of the urethane polymer dispersant is usually 1,000 to 200,000, preferably 2,000 to 100,000, and more preferably 3,000 to 50,000.
- Mw weight average molecular weight
- an unsaturated group-containing monomer having a functional group (the functional group here is the functional group described above as the functional group contained in the polymer dispersant), It is preferable to use a random copolymer, a graft copolymer, or a block copolymer with an unsaturated group-containing monomer having no functional group. These copolymers can be produced by a known method.
- Examples of the unsaturated group-containing monomer having a functional group include (meth)acrylic acid, 2-(meth)acryloyloxyethylsuccinic acid, 2-(meth)acryloyloxyethylphthalic acid, and 2-(meth)acryloyl Unsaturated monomers having a carboxyl group such as loyloxyethyl hexahydrophthalic acid and acrylic acid dimer, dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate and tertiary amino groups such as quaternary compounds thereof, Specific examples include unsaturated monomers having a quaternary ammonium salt group. These may be used alone or in combination of two or more.
- Examples of the unsaturated group-containing monomer having no functional group include methyl (meth)acrylate, ethyl (meth)acrylate, propyl (meth)acrylate, isopropyl (meth)acrylate, n-butyl (meth)acrylate, isobutyl ( (Meth)acrylate, t-butyl(meth)acrylate, benzyl(meth)acrylate, phenyl(meth)acrylate, cyclohexyl(meth)acrylate, phenoxyethyl(meth)acrylate, phenoxymethyl(meth)acrylate, 2-ethylhexyl(meth) Acrylate, isobornyl (meth)acrylate, tricyclodecane (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, N-vinylpyrrolidone, styrene and its derivatives, ⁇ -methylstyrene, N-cyclo
- the acrylic polymer dispersant is particularly preferably an AB or BABB block copolymer consisting of an A block having a functional group and a B block having no functional group.
- a in the block in addition to the partial structure derived from the unsaturated group-containing monomer containing the functional group, a partial structure derived from the unsaturated group-containing monomer containing no functional group may be contained. May be contained in the A block in any form of random copolymerization or block copolymerization.
- the content of the partial structure containing no functional group in the A block is usually 80% by mass or less, preferably 50% by mass or less, and more preferably 30% by mass or less.
- the B block is composed of a partial structure derived from an unsaturated group-containing monomer which does not contain the above functional group, but one B block contains partial structures derived from two or more kinds of monomers. Alternatively, these may be contained in the B block in any mode of random copolymerization or block copolymerization.
- the AB or BAB block copolymer is prepared, for example, by the following living polymerization method.
- the living polymerization method includes an anionic living polymerization method, a cationic living polymerization method, and a radical living polymerization method. Among them, the anionic living polymerization method has an anion as a polymerization active species, and is represented by the following scheme, for example.
- Ar 1 is a monovalent organic group
- Ar 2 is a monovalent organic group different from Ar 1
- M is a metal atom
- s and t are each an integer of 1 or more.
- the polymerization active species is a radical, which is shown in the following scheme, for example.
- Ar 1 is a monovalent organic group
- Ar 2 is a monovalent organic group different from Ar 1
- j and k are each an integer of 1 or more
- R a is a hydrogen atom or 1 the valence of the organic radical
- the R b are different hydrogen atom or a monovalent organic group and R a.
- the acrylic polymer dispersant that can be used in the present invention may be an AB block copolymer or a BAB block copolymer, and the A block constituting the copolymer may be used.
- the /B block ratio is preferably 1/99 to 80/20, and particularly preferably 5/95 to 60/40 (mass ratio). By setting it within this range, the balance between dispersibility and storage stability can be secured. Tend. Further, the amount of the quaternary ammonium salt group in 1 g of the AB block copolymer or BAB block copolymer that can be used in the present invention is usually preferably 0.1 to 10 mmol. Within the range, good dispersibility tends to be ensured.
- such a block copolymer may usually contain an amino group generated in the production process, but its amine value is about 1 to 100 mgKOH/g, and from the viewpoint of dispersibility, It is preferably 10 mgKOH/g or more, more preferably 30 mgKOH/g or more, further preferably 50 mgKOH/g or more, preferably 90 mgKOH/g or less, more preferably 80 mgKOH/g or less, and further preferably 75 mgKOH/g or less.
- 10 to 90 mgKOH/g is preferable, 30 to 80 mgKOH/g is more preferable, and 50 to 75 mgKOH/g is further preferable.
- the amine value of the dispersant such as the block copolymer is represented by the mass of KOH equivalent to the amount of the base per 1 g of the solid content excluding the solvent in the sample of the dispersant, and is measured by the following method. Precisely weigh 0.5-1.5 g of the dispersant sample in a 100 mL beaker and dissolve with 50 mL acetic acid. Using an automatic titrator equipped with a pH electrode, this solution is subjected to neutralization titration with 0.1 mol/L HClO 4 acetic acid solution. Using the inflection point of the titration pH curve as the end point of titration, the amine value is calculated by the following formula.
- Amine value [mgKOH/g] (561 ⁇ V)/(W ⁇ S) [However, W: Dispersant sample weight [g], V: Titration amount [mL] at the end point of titration, S: Solid content concentration [mass%] of the dispersant sample. ]
- the acid value of this block copolymer depends on the presence and type of the acidic group which is the source of the acid value, it is generally preferable that the acid value is low, usually 10 mgKOH/g or less, and its weight average molecular weight (Mw). ) Is preferably in the range of 1000 to 100,000. Within the above range, good dispersibility tends to be ensured.
- the specific structure of the acrylic polymer dispersant is not particularly limited, but from the viewpoint of dispersibility, it is represented by the following formula (i). It is preferable to have a repeating unit (hereinafter, may be referred to as “repeating unit (i)”).
- R 31 to R 33 each independently have a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, or a substituent. It is an optionally substituted aralkyl group, and two or more of R 31 to R 33 may be bonded to each other to form a cyclic structure.
- R 34 is a hydrogen atom or a methyl group.
- X is a divalent linking group, and Y ⁇ is a counter anion.
- the number of carbon atoms of the alkyl group which may have a substituent in R 31 to R 33 of the above formula (i) is not particularly limited, but is usually 1 or more, and preferably 10 or less, 6 The following is more preferable. For example, 1 to 10 is preferable, and 1 to 6 is more preferable.
- Specific examples of the alkyl group include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, and the like. Among these, a methyl group, an ethyl group, a propyl group, and a butyl group.
- a group, a pentyl group, or a hexyl group is preferable, and a methyl group, an ethyl group, a propyl group, or a butyl group is more preferable. Further, it may be linear or branched. It may also contain a cyclic structure such as a cyclohexyl group or a cyclohexylmethyl group.
- the number of carbon atoms of the optionally substituted aryl group in R 31 to R 33 of the above formula (i) is not particularly limited, but is usually 6 or more, and preferably 16 or less, 12 The following is more preferable. For example, 6 to 16 are preferable, and 6 to 12 are more preferable.
- Specific examples of the aryl group include a phenyl group, a methylphenyl group, an ethylphenyl group, a dimethylphenyl group, a diethylphenyl group, a naphthyl group, an anthracenyl group, and the like.
- a phenyl group a methylphenyl group, an ethylphenyl group , A dimethylphenyl group, or a diethylphenyl group, and more preferably a phenyl group, a methylphenyl group, or an ethylphenyl group.
- the number of carbon atoms of the aralkyl group which may have a substituent in R 31 to R 33 of the above formula (i) is not particularly limited, but is usually 7 or more, and preferably 16 or less, 12 The following is more preferable. For example, 7 to 16 are preferable, and 7 to 12 are more preferable.
- Specific examples of the aralkyl group include a phenylmethyl group (benzyl group), a phenylethyl group (phenethyl group), a phenylpropyl group, a phenylbutyl group, a phenylisopropyl group and the like.
- R 31 to R 33 are preferably each independently an alkyl group or an aralkyl group, and specifically, R 31 and R 33 are each independently a methyl group or an ethyl group. It is preferable that R 32 is a group and R 32 is a phenylmethyl group or a phenylethyl group, and it is further preferable that R 31 and R 33 are a methyl group and R 32 is a phenylmethyl group.
- repeating unit (ii) a repeating unit represented by the following formula (ii) (hereinafter referred to as “repeating unit (ii)”) There is a).
- R 35 and R 36 each independently have a hydrogen atom, an alkyl group which may have a substituent, an aryl group which may have a substituent, or a substituent. And R 35 and R 36 may be bonded to each other to form a cyclic structure.
- R 37 is a hydrogen atom or a methyl group.
- Z is a divalent linking group.
- alkyl group which may have a substituent in R 35 and R 36 of the above formula (ii) those exemplified as R 31 to R 33 of the above formula (i) are preferably adopted. it can.
- aryl group which may have a substituent in R 35 and R 36 of the above formula (ii) those exemplified as R 31 to R 33 of the above formula (i) are preferably adopted.
- aralkyl group which may have a substituent in R 35 and R 36 of the above formula (ii) those exemplified as R 31 to R 33 of the above formula (i) are preferably adopted. it can.
- R 35 and R 36 are each independently preferably an alkyl group which may have a substituent, and more preferably a methyl group or an ethyl group.
- the substituent which the alkyl group, aralkyl group or aryl group in R 31 to R 33 of the above formula (i) and R 35 and R 36 of the above formula (ii) may have is a halogen atom, an alkoxy group, Examples thereof include benzoyl group and hydroxyl group.
- the divalent linking groups X and Z are, for example, an alkylene group having 1 to 10 carbon atoms, an arylene group having 6 to 12 carbon atoms, a —CONH—R 43 — group, —COOR 44 — group (provided that R 43 and R 44 are a single bond, an alkylene group having 1 to 10 carbon atoms, or an ether group (alkyloxyalkyl group) having 2 to 10 carbon atoms) and the like are preferable. Is a —COO—R 44 — group.
- examples of Y ⁇ as a counter anion include Cl ⁇ , Br ⁇ , I ⁇ , ClO 4 ⁇ , BF 4 ⁇ , CH 3 COO ⁇ , PF 6 ⁇ and the like.
- the content ratio of the repeating unit represented by the formula (i) is not particularly limited, but from the viewpoint of dispersibility, it is represented by the content ratio of the repeating unit represented by the formula (i) and the formula (ii). It is preferably 60 mol% or less, more preferably 50 mol% or less, still more preferably 40 mol% or less, and particularly preferably 35 mol% or less, based on the total content of repeating units. , Preferably 5 mol% or more, more preferably 10 mol% or more, further preferably 20 mol% or more, particularly preferably 30 mol% or more.
- the content ratio of the repeating unit represented by the formula (i) in all the repeating units of the polymer dispersant is not particularly limited, but from the viewpoint of dispersibility, it is preferably 1 mol% or more, and 5 mol% or more. More preferably, 10 mol% or more is further preferable, 50 mol% or less is preferable, 30 mol% or less is more preferable, 20 mol% or less is further preferable, and 15 mol% or less is particularly preferable. For example, 1 to 50 mol% is preferable, 5 to 30 mol% is more preferable, 5 to 20 mol% is further preferable, and 10 to 15 mol% is particularly preferable.
- the content ratio of the repeating unit represented by the formula (ii) in all repeating units of the polymer dispersant is not particularly limited, but from the viewpoint of dispersibility, it is preferably 5 mol% or more, and 10 mol% or more. More preferably, 15 mol% or more is further preferable, 20 mol% or more is particularly preferable, 60 mol% or less is preferable, 40 mol% or less is more preferable, 30 mol% or less is further preferable, and 25 mol% or less is particularly preferable. preferable. For example, 5 to 60 mol% is preferable, 10 to 40 mol% is more preferable, 15 to 30 mol% is further preferable, and 20 to 25 mol% is particularly preferable.
- the polymer dispersant is a repeating unit represented by the following formula (iii) (hereinafter, “repeating unit (iii)” from the viewpoint of increasing compatibility with a binder component such as a solvent and improving dispersion stability. It may be said that it has ".
- R 40 is an ethylene group or a propylene group
- R 41 is an alkyl group which may have a substituent
- R 42 is a hydrogen atom or a methyl group.
- n is an integer of 1 to 20.
- the number of carbon atoms of the alkyl group which may have a substituent in R 41 of the above formula (iii) is not particularly limited, but is usually 1 or more, preferably 2 or more, and preferably 10 or less, and 6 or less. Is more preferable. For example, 1 to 10 is preferable, 1 to 6 is more preferable, and 2 to 6 is further preferable.
- Specific examples of the alkyl group include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, and the like.
- a methyl group, an ethyl group, a propyl group, and a butyl group a group, a pentyl group, or a hexyl group is preferable, and a methyl group, an ethyl group, a propyl group, or a butyl group is more preferable. Further, it may be linear or branched. It may also contain a cyclic structure such as a cyclohexyl group or a cyclohexylmethyl group.
- n in the above formula (iii) is preferably 1 or more, more preferably 2 or more, more preferably 10 or less, and more preferably 5 or less, from the viewpoint of compatibility and dispersibility with a binder component such as a solvent.
- a binder component such as a solvent.
- 1 to 10 is preferable, 1 to 5 is more preferable, and 2 to 5 is further preferable.
- the content of the repeating unit represented by the formula (iii) in all repeating units of the polymer dispersant is not particularly limited, but is preferably 1 mol% or more, more preferably 2 mol% or more, and 4 mol%.
- the above is more preferable, 30 mol% or less is preferable, 20 mol% or less is more preferable, and 10 mol% or less is further preferable.
- 1 to 30 mol% is preferable, 2 to 20 mol% is more preferable, and 4 to 10 mol% is further preferable.
- compatibility with a binder component such as a solvent and dispersion stability tend to be compatible.
- the polymer dispersant is a repeating unit represented by the following formula (iv) (hereinafter, referred to as "repeating unit (iv)" from the viewpoint of increasing the compatibility of the dispersant with a binder component such as a solvent and improving the dispersion stability. )” in some cases.).
- R 38 is an alkyl group which may have a substituent, an aryl group which may have a substituent, or an aralkyl group which may have a substituent.
- R 39 is a hydrogen atom or a methyl group.
- the number of carbon atoms of the alkyl group which may have a substituent in R 38 of the above formula (iv) is not particularly limited, but is usually 1 or more, preferably 2 or more, and preferably 4 or more. More preferably, it is preferably 10 or less, and more preferably 8 or less. For example, 1 to 10 is preferable, 1 to 8 is more preferable, 2 to 8 is further preferable, and 4 to 8 is even more preferable.
- Specific examples of the alkyl group include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, and the like.
- a methyl group, an ethyl group, a propyl group, and a butyl group a group, a pentyl group, or a hexyl group is preferable, and a methyl group, an ethyl group, a propyl group, or a butyl group is more preferable. Further, it may be linear or branched. It may also contain a cyclic structure such as a cyclohexyl group or a cyclohexylmethyl group.
- the number of carbon atoms of the aryl group which may have a substituent in R 38 of the above formula (iv) is not particularly limited, but is usually 6 or more, and is preferably 16 or less, more preferably 12 or less, and 8 The following are more preferable. For example, 6 to 16 is preferable, 6 to 12 is more preferable, and 6 to 8 is further preferable.
- Specific examples of the aryl group include a phenyl group, a methylphenyl group, an ethylphenyl group, a dimethylphenyl group, a diethylphenyl group, a naphthyl group, an anthracenyl group, and the like.
- a phenyl group a methylphenyl group, an ethylphenyl group , A dimethylphenyl group, or a diethylphenyl group, and more preferably a phenyl group, a methylphenyl group, or an ethylphenyl group.
- the number of carbon atoms of the aralkyl group which may have a substituent in R 38 of the above formula (iv) is not particularly limited, but is usually 7 or more, and preferably 16 or less, and 12 or less. More preferably, it is more preferably 10 or less. For example, 7 to 16 are preferable, 7 to 12 are more preferable, and 7 to 10 are further preferable.
- Specific examples of the aralkyl group include a phenylmethyl group, a phenylethyl group, a phenylpropyl group, a phenylbutyl group, a phenylisopropyl group, and the like.
- a phenylmethyl group a phenylethyl group, a phenylpropyl group, or a phenyl group. It is preferably a butyl group, and more preferably a phenylmethyl group or a phenylethyl group.
- R 38 is preferably an alkyl group or an aralkyl group, and more preferably a methyl group, an ethyl group or a phenylmethyl group.
- substituent which the alkyl group may have in R 38 include a halogen atom and an alkoxy group.
- the substituent that the aryl group or aralkyl group may have include a chain alkyl group, a halogen atom and an alkoxy group.
- the chain alkyl group represented by R 38 includes both straight chain and branched chain groups.
- the content of the repeating unit represented by the formula (iv) in all repeating units of the polymer dispersant is preferably 30 mol% or more, more preferably 40 mol% or more, and 50 It is more preferably at least mol%, preferably at most 80 mol%, more preferably at most 70 mol%.
- 30 to 80 mol% is preferable, 40 to 80 mol% is more preferable, and 50 to 70 mol% or more is further preferable.
- the polymer dispersant may have a repeating unit other than the repeating unit (i), the repeating unit (ii), the repeating unit (iii) and the repeating unit (iv).
- repeating units include styrene-based monomers such as styrene and ⁇ -methylstyrene; (meth)acrylate-based monomers such as (meth)acrylic acid chloride; (meth)acrylamide, N- (Meth)acrylamide-based monomers such as methylol acrylamide; vinyl acetate; acrylonitrile; allyl glycidyl ether, crotonic acid glycidyl ether; and N-methacryloylmorpholine.
- the polymer dispersant is an A block having a repeating unit (i) and a repeating unit (ii) and a B block having no repeating unit (i) and a repeating unit (ii). It is preferable that the block copolymer has The block copolymer is preferably an AB block copolymer or a BAB block copolymer. Surprisingly, the dispersibility of the dispersant tends to be significantly improved by introducing not only a quaternary ammonium salt group but also a tertiary amino group into the A block. Further, the B block preferably has a repeating unit (iii), and more preferably has a repeating unit (iv).
- the repeating unit (i) and the repeating unit (ii) may be contained in any form of random copolymerization and block copolymerization. Further, the repeating unit (i) and the repeating unit (ii) may each be contained in one A block in an amount of two or more, and in that case, each repeating unit is randomly copolymerized in the A block, It may be contained in any form of block copolymerization.
- repeating unit (i) and a repeating unit other than the repeating unit (ii) may be contained in the A block, and examples of such a repeating unit include the above-mentioned (meth)acrylic acid ester-based monomer. Examples include repeating units derived from a monomer.
- the content ratio of the repeating unit (i) and the repeating unit other than the repeating unit (ii) in the A block is preferably 0 to 50 mol %, more preferably 0 to 20 mol %. Most preferably, it is not contained in the block.
- Repeating units other than the repeating units (iii) and (iv) may be contained in the B block, and examples of such repeating units include styrene-based monomers such as styrene and ⁇ -methylstyrene; (Meth)acrylic acid chloride-based monomers such as (meth)acrylic acid chloride; (meth)acrylamide-based monomers such as (meth)acrylamide and N-methylolacrylamide; vinyl acetate; acrylonitrile; allyl glycidyl ether, glycidyl crotonic acid Ether; a repeating unit derived from a monomer such as N-methacryloylmorpholine.
- styrene-based monomers such as styrene and ⁇ -methylstyrene
- (Meth)acrylic acid chloride-based monomers such as (meth)acrylic acid chloride
- (meth)acrylamide-based monomers such as (meth)acryl
- the content of the repeating unit other than the repeating unit (iii) and the repeating unit (iv) in the B block is preferably 0 to 50 mol %, more preferably 0 to 20 mol %. Most preferably, it is not contained in the block.
- the (f) dispersant in combination with a pigment derivative described later.
- an adhesion improver such as a silane coupling agent, a surfactant (coating improver), a pigment derivative, a photoacid generator, a crosslinking agent, a mercapto compound.
- Additives such as a polymerization inhibitor, a development improver, an ultraviolet absorber and an antioxidant can be appropriately added.
- the photosensitive coloring composition of the present invention may contain an adhesion improver in order to improve the adhesion to the substrate.
- an adhesion improver a silane coupling agent, a phosphoric acid group-containing compound and the like are preferable.
- the type of the silane coupling agent various types such as epoxy type, (meth)acrylic type and amino type can be used alone or in combination of two or more.
- silane coupling agents examples include (meth)acryloxysilanes such as 3-methacryloxypropylmethyldimethoxysilane and 3-methacryloxypropyltrimethoxysilane, and 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane.
- Epoxy silanes such as 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane and 3-glycidoxypropyltriethoxysilane, ureidosilanes such as 3-ureidopropyltriethoxysilane, Isocyanate silanes such as 3-isocyanate propyl triethoxy silane may be mentioned, but silane coupling agents of epoxy silanes are particularly preferable.
- the phosphoric acid group-containing compound (meth)acryloyl group-containing phosphates are preferable, and compounds represented by the following general formula (g1), (g2) or (g3) are preferable.
- R 51 represents a hydrogen atom or a methyl group
- l and l′ are integers of 1 to 10
- m is 1, 2 or 3.
- These phosphoric acid group-containing compounds may be used alone or in combination of two or more.
- the photosensitive coloring composition of the present invention may contain a surfactant to improve coatability.
- the surfactant various ones such as anionic, cationic, nonionic and amphoteric surfactants can be used. Among them, it is preferable to use a nonionic surfactant because it is unlikely to adversely affect various properties, and among them, a fluorine-based surfactant or a silicon-based surfactant is effective in terms of coating properties.
- a fluorine-based surfactant or a silicon-based surfactant is effective in terms of coating properties.
- examples of such a surfactant include TSF4460 (manufactured by Momentive Performance Materials), DFX-18 (manufactured by Neos), BYK-300, BYK-325, BYK-330 (manufactured by Big Chemie), KP340.
- F-470, Megafac F-475, Megafac F-478, Megafac F-554, Megafac F-559 (manufactured by DIC)
- Examples include SH7PA (manufactured by Toray Dow Corning), DS-401 (manufactured by Daikin), L-77 (manufactured by Nippon Unicar), FC4430 (manufactured by 3M), and the like.
- 1 type may be used for a surfactant and 2 or more types may be used together by arbitrary combinations and ratios.
- the photosensitive coloring composition of the present invention may contain a pigment derivative as a dispersion aid in order to improve dispersibility and storability.
- pigment derivatives include azo, phthalocyanine, quinacridone, benzimidazolone, quinophthalone, isoindolinone, dioxazine, anthraquinone, indanthrene, perylene, perinone, diketopyrrolopyrrole, dioxazine.
- examples thereof include derivatives such as phthalocyanine compounds and quinophthalone compounds.
- a sulfonic acid group, a sulfonamide group and a quaternary salt thereof, a phthalimidomethyl group, a dialkylaminoalkyl group, a hydroxyl group, a carboxyl group, an amide group, etc. may be directly attached to the pigment skeleton or may be an alkyl group, an aryl group, a hetero group. Examples thereof include those bonded via a ring group and the like, and a sulfonic acid group is preferable. Further, a plurality of these substituents may be substituted on one pigment skeleton.
- pigment derivatives include phthalocyanine sulfonic acid derivatives, quinophthalone sulfonic acid derivatives, anthraquinone sulfonic acid derivatives, quinacridone sulfonic acid derivatives, diketopyrrolopyrrole sulfonic acid derivatives, and dioxazine sulfonic acid derivatives. These may be used alone or in combination of two or more.
- the photo-acid generator is a compound capable of generating an acid by ultraviolet rays, and has a cross-linking agent such as a melamine compound due to the action of the acid generated upon exposure.
- the crosslinking reaction proceeds.
- photo-acid generators those having a large solubility in a solvent, especially a solvent used in the photosensitive coloring composition are preferable, and examples thereof include diphenyliodonium, ditolyliodonium, and phenyl(p-anisyl).
- Iodonium bis(m-nitrophenyl)iodonium, bis(p-tert-butylphenyl)iodonium, bis(p-chlorophenyl)iodonium, bis(n-dodecyl)iodonium, p-isobutylphenyl(p-tolyl)iodonium, p -Diaryl iodonium such as isopropylphenyl (p-tolyl) iodonium, or chloride, bromide, or borofluoride salt, hexafluorophosphate salt, hexafluoroarsenate salt, aromatic sulfonate of triarylsulfonium such as triphenylsulfonium , Tetrakis(pentafluorophenyl)borate salt, etc., sulfonium organoboron complexes such as diphenylphenacylsulfonium(n-butyl)triphenyl
- crosslinking Agent can be further added to the photosensitive coloring composition of the present invention, and for example, a melamine- or guanamine-based compound can be used.
- cross-linking agents include melamine- or guanamine-based compounds represented by the following general formula (6).
- R 61 represents a —NR 66 R 67 group or an aryl group having 6 to 12 carbon atoms
- R 62 , R 63 , R 64 , R 65 , R 66 and R 67 each represent a CH 2 OR 68 group
- R 61 is an aryl group having 6 to 12 carbon atoms
- one of R 62 , R 63 , R 64 and R 65 is —CH 2 OR 68.
- R 62 , R 63 , R 64 , R 65 , R 66 and the remaining of R 67 each independently represent hydrogen or a —CH 2 OR 68 group
- R 68 represents a hydrogen atom or a carbon number of 1 to 4
- the aryl group having 6 to 12 carbon atoms is typically a phenyl group, a 1-naphthyl group or a 2-naphthyl group, and these phenyl groups and naphthyl groups include an alkyl group, an alkoxy group, a halogen atom, etc.
- the substituent of may be bonded.
- the alkyl group and the alkoxy group may each have about 1 to 6 carbon atoms.
- the alkyl group represented by R 68 is preferably a methyl group or an ethyl group, and particularly preferably a methyl group.
- Melamine compounds corresponding to the general formula (6) that is, compounds of the following general formula (6-1) include hexamethylolmelamine, pentamethylolmelamine, tetramethylolmelamine, hexamethoxymethylmelamine, pentamethoxymethylmelamine, tetramethoxy. Methyl melamine, hexaethoxymethyl melamine and the like are included.
- R 62 , R 63 , R 64 , R 65 , R 66 and R 67 when one of R 62 , R 63 , R 64 , R 65 , R 66 and R 67 is an aryl group, one of R 62 , R 63 , R 64 and R 65 is —CH 2 Represents an OR 68 group, the rest of R 62 , R 63 , R 64 , R 65 , R 66 and R 67 independently of each other represents a hydrogen atom or a —CH 2 OR 68 group, wherein R 68 represents a hydrogen atom or Represents an alkyl group.
- the guanamine-based compound corresponding to the general formula (6) that is, the compound in which R 61 in the general formula (6) is aryl, includes tetramethylolbenzoguanamine, tetramethoxymethylbenzoguanamine, trimethoxymethylbenzoguanamine, and tetraethoxymethylbenzoguanamine. Are included.
- a cross-linking agent having a methylol group or a methylol alkyl ether group can be used.
- An example is given below. 2,6-bis(hydroxymethyl)-4-methylphenol, 4-tert-butyl-2,6-bis(hydroxymethyl)phenol, 5-ethyl-1,3-bis(hydroxymethyl)perhydro-1,3 ,5-Triazin-2-one (commonly called N-ethyldimethyloltriazone) or its dimethyl ether compound, dimethyloltrimethylene urea or its dimethyl ether compound, 3,5-bis(hydroxymethyl)perhydro-1,3,5- Oxadiazin-4-one (commonly called dimethylolurone) or its dimethyl ether body, tetramethylol glyoxaldiurene or its tetramethyl ether body.
- crosslinking agents may be used alone or in combination of two or more.
- the amount of the crosslinking agent used is preferably 0.1 to 15% by mass, and particularly preferably 0.5 to 10% by mass, based on the total solid content of the photosensitive coloring composition.
- mercapto compound As a polymerization accelerator, and for improving the curability and surface roughness of the surface of the cured product.
- mercapto compound include a mercapto group-containing compound having an aromatic ring and an aliphatic mercapto group-containing compound.
- a compound represented by the following general formula (1-3) is preferably used from the viewpoint of photocurability.
- Z represents —O—, —S— or —NH—
- R 61 , R 62 , R 63 , and R 64 each independently represent a hydrogen atom or a monovalent substituent.
- Z is preferably —S— or —NH—, more preferably —NH—.
- R 61 , R 62 , R 63 , and R 64 are each independently preferably a hydrogen atom, a C 1-4 alkyl group or a C 1-4 alkoxy group, and a hydrogen atom. Is more preferable.
- 2-mercapto group-containing compounds having an aromatic ring such as 1,4-dimethylmercaptobenzene
- 2-mercaptobenzothiazole and 2-mercaptobenzimidazole are preferable from the viewpoint of taper angle.
- aliphatic mercapto group-containing compound hexanedithiol, decanedithiol, or the compound represented by the following general formula (1-4) is preferably used from the viewpoint of photocurability.
- m represents an integer of 0 to 4 and n represents an integer of 2 to 4.
- R 71 and R 72 each independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.
- X represents an n-valent group.
- m is preferably 1 or 2 from the viewpoint of photocurability.
- n is preferably 3 or 4, and more preferably 4.
- the alkyl group for R 71 and R 72 is preferably one having 1 to 3 carbon atoms from the viewpoint of photocurability.
- at least one of R 71 and R 72 is preferably a hydrogen atom, and in this case, R 71 is a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. It is preferable to have.
- X is preferably an alkylene group having 1 to 6 carbon atoms, which may have an ether bond and/or a branched portion, from the viewpoint of photocurability. From the viewpoint of photocurability, an alkylene group having 1 to 6 carbon atoms is more preferable, and an alkylene group having 4 carbon atoms is further preferable.
- X is preferably a structure represented by the following general formula (1-5) or (1-6) from the viewpoint of photocurability.
- R 73 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a methylol group.
- R 73 an ethyl group is preferable from the viewpoint of photocurability.
- R 74 represents an alkylene group having 1 to 4 carbon atoms.
- R 74 an ethylene group is preferable from the viewpoint of photocurability.
- X preferably has a structure represented by the following general formula (1-7).
- trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tris (3-mercaptopropionate), trimethylolpropane tris (3-mercaptobutyrate) ), pentaerythritol tetrakis(3-mercaptobutyrate), pentaerythritol tris(3-mercaptobutyrate), 1,3,5-tris(3-mercaptobutyloxyethyl)-1,3,5-triazine-2, 4,6(1H,3H,5H)-trione is preferable, and pentaerythritol tetrakis(3-mercaptopropionate) and pentaerythritol tetrakis(3-mercaptobutyrate) are more preferable.
- one or more selected from the group consisting of 2-mercaptobenzothiazole, 2-mercaptobenzimidazole, and 2-mercaptobenzoxazole is combined with a photopolymerization initiator to form a photopolymerization initiator. It is preferably used as a polymerization initiator system.
- 2-mercaptobenzothiazole may be used, 2-mercaptobenzimidazole may be used, or 2-mercaptobenzothiazole and 2-mercaptobenzimidazole may be used in combination.
- a mercapto group-containing compound having an aromatic ring and an aliphatic mercapto group-containing compound in combination. This is because when a mask with a narrow opening is used, the illuminance per unit area becomes low due to diffraction during exposure, and it is more susceptible to oxygen inhibition than when the line width is thick, and the surface curability becomes low. Because there is a tendency.
- a hexaarylbiimidazole-based photopolymerization initiator is used as the (c) photopolymerization initiator
- a mercapto group-containing compound having an aromatic ring and an aliphatic mercapto group-containing compound are used in combination. Is preferred.
- the acetophenone-based photopolymerization initiator is used, the effect tends to be sufficiently obtained even when the aliphatic mercapto group-containing compound is used alone.
- a polymerization inhibitor may be contained.
- the polymerization inhibitor include hydroquinone, hydroquinone monomethyl ether, methylhydroquinone, methoxyphenol, 2,6-di-tert-butyl-4-cresol (BHT) and the like. Among these, 2,6-di-tert-butyl-4-cresol is preferable from the viewpoint of shape control. Further, from the viewpoint of safety to human body, hydroquinone monomethyl ether and methylhydroquinone are preferable.
- the polymerization inhibitor may contain one kind or two or more kinds.
- the resin may contain a polymerization inhibitor, which may be used as the polymerization inhibitor of the present invention. The same or different polymerization inhibitor may be added during the production of the photosensitive coloring composition.
- the content ratio of the (b) alkali-soluble resin is not particularly limited, but is usually 5% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more based on the total solid content. , More preferably 20 mass% or more, particularly preferably 25 mass% or more, usually 80 mass% or less, preferably 70 mass% or less, more preferably 60 mass% or less, more preferably 50 mass% or less, even more It is preferably 40% by mass or less, and particularly preferably 35% by mass or less.
- the content ratio of the alkali-soluble resin (b) is not less than the above lower limit, the developing solubility tends to be improved. Further, when the content is not more than the upper limit, the mechanical properties tend to be improved.
- the content ratio of (c) the photopolymerization initiator is not particularly limited, but is usually 0.1% by mass or more, preferably 0.5% by mass or more, more preferably 1% by mass or more, further preferably 1% by mass based on the total solid content.
- the amount is 0.5% by mass or more, usually 15% by mass or less, preferably 10% by mass or less, more preferably 8% by mass or less, further preferably 6% by mass or less, and particularly preferably 4% by mass or less.
- 0.1 to 15% by mass is preferable, 0.1 to 10% by mass is more preferable, 0.5 to 8% by mass is further preferable, 1 to 6% by mass is particularly preferable, 1.5 to 4% by mass.
- 0.1 to 15% by mass is preferable
- 0.1 to 10% by mass is more preferable
- 0.5 to 8% by mass is further preferable
- 1 to 6% by mass is particularly preferable, 1.5 to 4% by mass.
- the content ratio of the polymerization accelerator is preferably 0.05% by mass or more, and usually 10% by mass in the total solid content of the photosensitive coloring composition of the present invention. % Or less, preferably 5% by mass or less, for example, 0.05 to 10% by mass, preferably 0.05 to 5% by mass.
- the polymerization accelerator is usually used in a proportion of 0.1 to 50 parts by mass, preferably 0.1 to 20 parts by mass, relative to 100 parts by mass of the (c) photopolymerization initiator.
- the content ratio of the sensitizing dye is preferably 0.1% by mass or more, based on the total solid content of the photosensitive coloring composition of the present invention. It is preferably 0.2% by mass or more, more preferably 0.3% by mass or more, preferably 5% by mass or less, more preferably 4% by mass or less, still more preferably 3% by mass or less. For example, 0.1 to 5 mass% is preferable, 0.2 to 4 mass% is more preferable, and 0.3 to 3 mass% is further preferable. When it is at least the above lower limit, photocurability will be enhanced and surface roughness will tend to be improved, and when it is at most the above upper limit, development solubility will tend to be improved.
- the content ratio of the (d) ethylenically unsaturated compound is usually 1% by mass or more, preferably 5% by mass or more, more preferably 10% by mass or more, based on the total solid content of the photosensitive coloring composition of the present invention. It is preferably 20% by mass or more, more preferably 30% by mass or more, particularly preferably 40% by mass or more, most preferably 50% by mass or more, and usually 80% by mass or less, preferably 70% by mass or less, It is preferably 65 mass% or less. For example, 1 to 80% by weight is preferable, 5 to 80% by weight is more preferable, 10 to 70% by weight is further preferable, 20 to 70% by weight is further preferable, 30 to 70% by weight is particularly preferable, and 40 to 65%.
- Mass% is particularly preferable, and 50 to 65 mass% or more is the most preferable.
- D When the content ratio of the ethylenically unsaturated compound is not less than the lower limit value, mechanical properties tend to be improved, and when it is not more than the upper limit value, the developing solubility tends to be improved. ..
- the content ratio of the (b) alkali-soluble resin to 100 parts by mass of the (d) ethylenically unsaturated compound is not particularly limited, but is preferably 10 parts by mass or more, more preferably 20 parts by mass or more, and 30 parts by mass or more. It is more preferably 40 parts by mass or more, particularly preferably 150 parts by mass or less, 120 parts by mass or less, more preferably 100 parts by mass or less, and further preferably 70 parts by mass or less. For example, it is preferably 10 to 150 parts by mass, more preferably 20 to 120 parts by mass, further preferably 30 to 100 parts by mass, particularly preferably 40 to 70 parts by mass. When it is at least the lower limit, the developing solubility tends to be improved, and when it is at most the upper limit, the mechanical properties tend to be good.
- the content ratio of the total solid content is usually 5% by mass or more, preferably 10% by mass or more, more preferably 15% by mass or more. Further, the solution is usually adjusted to 50% by mass or less, preferably 30% by mass or less, and more preferably 25% by mass or less. For example, 5 to 50 mass% is preferable, 10 to 30 mass% is more preferable, and 15 to 25 mass% is further preferable.
- the content ratio of the (f) dispersing agent is usually 0.5% by mass or more based on the total solid content of the photosensitive coloring composition, and 1% by mass. % Or more, more preferably 1.5% by mass or more, usually 30% by mass or less, preferably 20% by mass or less, more preferably 15% by mass or less, further preferably 10% by mass or less, and 5% by mass or less. Particularly preferred. For example, 0.5 to 30% by mass is preferable, 0.5 to 20% by mass is more preferable, 1 to 15% by mass is further preferable, 1 to 10% by mass is further more preferable, 1.5 to 5% by mass is Particularly preferred. (F) When the content ratio of the dispersant is not less than the lower limit value, storage stability tends to be improved, and when it is not more than the upper limit value, display reliability tends to be improved.
- the content ratio of the (f) dispersant to 100 parts by mass of the (a) colorant is usually 5 parts by mass or more, more preferably 10 parts by mass or more, further preferably 20 parts by mass or more, and usually 50 parts by mass or less, particularly It is preferably 40 parts by mass or less.
- 5 to 50 parts by mass is preferable, 10 to 50 parts by mass is more preferable, and 20 to 40 parts by mass is further preferable.
- the content ratio of the dispersant is not less than the lower limit value, storage stability tends to be improved, and when it is not more than the upper limit value, display reliability tends to be improved.
- an adhesion improver When an adhesion improver is used, its content is usually 0.1% by mass or more, preferably 0.2% by mass or more, more preferably 0.5% by mass or more, based on the total solid content of the photosensitive coloring composition. It is preferably, usually 30% by mass or less, 20% by mass or less, more preferably 10% by mass or less, further preferably 5% by mass or less, particularly preferably 3% by mass or less. For example, 0.1 to 30% by mass is preferable, 0.2 to 20% by mass is more preferable, 0.2 to 10% by mass is further preferable, 0.5 to 5% by mass is still more preferable, 0.5 to 5% by mass. 3% by weight is particularly preferred. When the content ratio of the adhesion improver is not less than the lower limit, the adhesion tends to be improved, and when it is not more than the upper limit, the residue tends to be reduced.
- a surfactant When a surfactant is used, its content is usually 0.001 to 10% by mass, preferably 0.005 to 1% by mass, and more preferably 0.01% by mass based on the total solid content of the photosensitive coloring composition. To 0.5 mass %, and most preferably 0.03 to 0.3 mass %.
- the content ratio of the surfactant By setting the content ratio of the surfactant to the lower limit or more, the smoothness and uniformity of the coating film tend to be easily expressed, and by setting the content ratio of the surfactant or less to the smoothness and uniformity of the coating film. It tends to be easy and can suppress deterioration of other characteristics.
- a mercapto compound When a mercapto compound is used, its content is usually 0.1% by mass or more, preferably 0.2% by mass or more, more preferably 0.5% by mass or more, based on the total solid content of the photosensitive coloring composition. It is preferably, usually 30% by mass or less, 20% by mass or less, more preferably 10% by mass or less, further preferably 5% by mass or less, particularly preferably 3% by mass or less. For example, 0.1 to 30% by mass is preferable, 0.2 to 20% by mass is more preferable, 0.2 to 10% by mass is further preferable, 0.5 to 5% by mass is still more preferable, 0.5 to 5% by mass. 3% by weight is particularly preferred.
- the content ratio of the mercapto compound is at least the lower limit value, photocurability is increased, and the surface roughness tends to be improved, and when it is at most the upper limit value, storage stability tends to be improved.
- a polymerization inhibitor When a polymerization inhibitor is used, its content is usually 0.05% by mass or more, preferably 0.1% by mass or more, and 0.2% by mass or more, based on the total solid content of the photosensitive coloring composition. It is more preferably, usually 2% by mass or less, 1% by mass or less, more preferably 0.8% by mass or less, further preferably 0.7% by mass or less, particularly preferably 0.5% by mass or less. For example, 0.05 to 2 mass% is preferable, 0.05 to 1 mass% is more preferable, 0.1 to 0.8 mass% is further preferable, 0.1 to 0.7 mass% is further preferable, 0.2 to 0.5 mass% is particularly preferable.
- the content ratio of the polymerization inhibitor is not less than the lower limit value, the resolution tends to be high, and when it is not more than the upper limit value, the curability tends to be high.
- the photosensitive coloring composition of the present invention can be suitably used for forming a colored spacer, and from the viewpoint of being used as a colored spacer, one having a higher optical density (OD) per 1 ⁇ m of film thickness of the coating film Is preferred.
- the color spacer alone obtained by curing the photosensitive coloring composition of the present invention is preferably 0.1 or more, more preferably 0.15 or more, and further preferably 0.2 or more. , 0.25 or more is more preferable.
- the optical density (OD) is a value measured by the method described later.
- the photosensitive coloring composition of the present invention is produced according to a conventional method. Usually, it is preferable that the colorant (a) is previously subjected to a dispersion treatment using a paint conditioner, a sand grinder, a ball mill, a roll mill, a stone mill, a jet mill, a homogenizer or the like. Since the colorant (a) is made into fine particles by the dispersion treatment, the coating properties of the photosensitive coloring composition are improved.
- the dispersion treatment is preferably performed in a system in which (a) a colorant, (e) a solvent, (f) a dispersant, and optionally (b) an alkali-soluble resin are used in combination or in part (
- the mixture to be subjected to the dispersion treatment and the composition obtained by the treatment may be referred to as "ink” or "pigment dispersion”.
- a polymer dispersant as the (f) dispersant, because the obtained ink and the photosensitive coloring composition are prevented from increasing in viscosity over time (excellent in dispersion stability).
- a pigment dispersion liquid containing at least (a) a colorant, (e) a solvent, and (f) a dispersant.
- a colorant, (e) solvent, and (f) dispersant that can be used in the pigment dispersion those described as those that can be used in the photosensitive coloring composition are preferably adopted. it can.
- the highly reactive component may be modified due to the heat generated during the dispersion treatment. Therefore, it is preferable to perform the dispersion treatment in a system that does not contain (c) a photopolymerization initiator or (d) an ethylenically unsaturated compound.
- a photopolymerization initiator or an ethylenically unsaturated compound.
- the (a) colorant is dispersed with a sand grinder, glass beads or zirconia beads having a particle diameter of about 0.1 to 8 mm are preferably used.
- the temperature is usually 0° C. to 100° C., preferably room temperature to 80° C.
- the dispersion time tends to vary depending on the composition of the liquid, the size of the dispersion treatment device, etc., and may be adjusted appropriately.
- the standard of dispersion is to control the gloss of the ink so that the 20-degree specular gloss (JIS Z8741) when the pigment dispersion or the photosensitive coloring composition is applied to the substrate is in the range of 50 to 300.
- the content is at least the lower limit value, the dispersion treatment is not sufficient, and it is possible to suppress the residual of the coarse pigment ((a) colorant) particles, and it is easy to make the developability, adhesion, resolution, etc. sufficient. ..
- the content is not more than the upper limit, it is possible to prevent the pigment from crushing and to generate a large number of ultrafine particles, which tends to improve the dispersion stability.
- the dispersed particle size of the pigment dispersed in the ink is usually 0.03 to 0.3 ⁇ m, which is measured by a dynamic light scattering method or the like.
- the ink obtained by the above dispersion treatment is mixed with the other components contained in the photosensitive coloring composition to form a uniform solution.
- fine dust is often mixed in the liquid, and thus the obtained photosensitive coloring composition is preferably filtered by a filter or the like.
- the cured product of the present invention is obtained by curing the photosensitive coloring composition of the present invention.
- a cured product obtained by curing the photosensitive coloring composition can be suitably used as a colored spacer.
- the support for forming the colored spacer is not particularly limited in its material as long as it has appropriate strength.
- transparent substrates are mainly used, examples of the material include polyester resins such as polyethylene terephthalate, polyolefin resins such as polypropylene and polyethylene, thermoplastic resin sheets such as polycarbonate, polymethylmethacrylate and polysulfone, and epoxy. Examples thereof include resins, unsaturated polyester resins, thermosetting resin sheets such as poly(meth)acrylic resins, and various glasses. Among these, glass and heat resistant resin are preferable from the viewpoint of heat resistance.
- a transparent electrode such as ITO or IZO may be formed on the surface of the substrate. Other than the transparent substrate, it can be formed on the TFT array.
- the support may be subjected to corona discharge treatment, ozone treatment, silane coupling agent, thin film forming treatment of various resins such as urethane resin, etc., if necessary. ..
- the thickness of the transparent substrate is usually 0.05 to 10 mm, preferably 0.1 to 7 mm.
- the film thickness is usually 0.01 to 10 ⁇ m, preferably 0.05 to 5 ⁇ m.
- the photosensitive colored composition of the present invention can be used in the same applications as known photosensitive colored compositions for color filters, but in the following, when it is used as a colored spacer, its formation The method will be described.
- a photosensitive coloring composition is supplied in a film form or a pattern form by a method such as coating on a support on which a coloring spacer is to be provided, and the solvent is dried. Subsequently, pattern formation is performed by a method such as a photolithography method of exposing and developing. Then, if necessary, additional exposure or heat curing treatment is performed to form a colored spacer on the support.
- the photosensitive coloring composition of the present invention is usually supplied onto a support in a state of being dissolved or dispersed in a solvent.
- a conventionally known method such as a spinner method, a wire bar method, a flow coating method, a die coating method, a roll coating method, or a spray coating method can be used. Further, it may be supplied in a pattern by an inkjet method or a printing method.
- the die coating method the usage amount of the coating liquid is significantly reduced, there is no influence of mist attached when the spin coating method is used, and the generation of foreign matter is suppressed. Is preferred.
- the coating amount varies depending on the use, but in the case of a colored spacer, for example, the dry film thickness is usually 0.5 ⁇ m to 10 ⁇ m, preferably 1 ⁇ m to 9 ⁇ m, and particularly preferably 1 ⁇ m to 7 ⁇ m. Further, it is important that the dry film thickness or the height of the finally formed spacer is uniform over the entire area of the substrate. If the variation is large, defects such as display spots may occur on the liquid crystal panel.
- the heights of the finally formed colored spacers are different.
- a known substrate such as a glass substrate can be used as the substrate. Further, it is preferable that the surface of the substrate is flat.
- Drying after supplying the photosensitive coloring composition onto the substrate is preferably performed by a drying method using a hot plate, an IR oven, or a convection oven. Further, it is also possible to combine a reduced pressure drying method in which drying is performed in a reduced pressure chamber without raising the temperature.
- the drying conditions such as the drying temperature and the drying time can be appropriately selected according to the type of solvent component, the performance of the dryer used, and the like. Usually, it is selected at a temperature of 40° C. to 130° C. for 15 seconds to 5 minutes, preferably at a temperature of 50° C. to 110° C. for 30 seconds to 3 minutes.
- Exposure Method The exposure is performed by superimposing a negative mask pattern on the coating film of the photosensitive coloring composition and irradiating a light source of ultraviolet rays or visible light through the mask pattern.
- a method of bringing the exposure mask close to the coating film of the photosensitive coloring composition or disposing the exposure mask at a position distant from the coating film of the photosensitive coloring composition A method of projecting exposure light through a mask may be used.
- a scanning exposure method using a laser beam that does not use a mask pattern may be used.
- the treatment is performed in a deoxygenated atmosphere, or the exposure is performed after forming an oxygen barrier layer such as a polyvinyl alcohol layer on the photopolymerizable layer.
- a light-shielding portion (light transmittance 0%) and a plurality of openings have the highest average light transmittance.
- An exposure mask having an opening (completely transmissive opening) and an opening having a low average light transmittance (intermediate transmissive opening) is used.
- a difference in average film transmittance between the intermediate transmission opening and the complete transmission opening that is, a difference in exposure amount causes a difference in residual film rate.
- a method is known in which the intermediate transmission opening is formed by a matrix light-shielding pattern having minute polygonal light-shielding units.
- a method of controlling the light transmittance by using a film of a material such as a chromium-based material, a molybdenum-based material, a tungsten-based material, or a silicon-based material as the absorber is known.
- the light source used for the above exposure is not particularly limited.
- a lamp light source such as a xenon lamp, a halogen lamp, a tungsten lamp, a high pressure mercury lamp, an ultrahigh pressure mercury lamp, a metal halide lamp, a medium pressure mercury lamp, a low pressure mercury lamp, a carbon arc, a fluorescent lamp, an argon ion laser, a YAG laser, Laser light sources such as excimer lasers, nitrogen lasers, helium cadmium lasers, blue-violet semiconductor lasers, and near infrared semiconductor lasers can be used.
- An optical filter can also be used when irradiating and using the light of a specific wavelength.
- the optical filter may be, for example, a type that can control the light transmittance at an exposure wavelength with a thin film, and in that case, as a material thereof, for example, a Cr compound (Cr oxide, nitride, oxynitride, fluoride, etc.), MoSi, Si, W, Al etc. are mentioned.
- a Cr compound Cr oxide, nitride, oxynitride, fluoride, etc.
- MoSi Si, W, Al etc.
- Energy of exposure generally, 1 mJ / cm 2 or more, preferably 5 mJ / cm 2 or more, more preferably 10 mJ / cm 2 or more, usually 300 mJ / cm 2 or less, preferably 200 mJ / cm 2 or less, more preferably It is 150 mJ/cm 2 or less.
- the distance between the exposure target and the mask pattern is usually 10 ⁇ m or more, preferably 50 ⁇ m or more, more preferably 75 ⁇ m or more, and usually 500 ⁇ m or less, preferably 400 ⁇ m or less, more preferably It is 300 ⁇ m or less.
- an image pattern can be formed on the substrate by development using an aqueous solution of an alkaline compound or an organic solvent.
- the aqueous solution may further contain a surfactant, an organic solvent, a buffer, a complexing agent, a dye or a pigment.
- Inorganic alkaline compounds such as sodium hydrogen phosphate, potassium hydrogen phosphate, sodium dihydrogen phosphate, potassium dihydrogen phosphate and ammonium hydroxide, and mono-, di- or triethanolamine, mono-, di- or trimethylamine
- Organic alkalinity such as mono-, di- or triethylamine, mono- or diisopropylamine, n-butylamine, mono-, di- or triisopropanolamine, ethyleneimine, ethylenediimine, tetramethylammonium hydroxide (TMAH), choline Compounds.
- These alkaline compounds may be a mixture of two or more kinds.
- surfactant examples include nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene alkyl esters, sorbitan alkyl esters, monoglyceride alkyl esters; alkylbenzene sulfone.
- nonionic surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene alkyl esters, sorbitan alkyl esters, monoglyceride alkyl esters; alkylbenzene sulfone.
- anionic surfactants such as acid salts, alkylnaphthalene sulfonates, alkyl sulfates, alkyl sulfonates, and sulfosuccinate salts
- amphoteric surfactants such as alkyl betaines and amino acids.
- organic solvent examples include isopropyl alcohol, benzyl alcohol, ethyl cellosolve, butyl cellosolve, phenyl cellosolve, propylene glycol, diacetone alcohol and the like.
- the organic solvent may be used alone or in combination with the aqueous solution.
- the conditions of the developing treatment are not particularly limited, and the developing temperature is usually in the range of 10 to 50° C., in particular 15 to 45° C., and particularly preferably 20 to 40° C.
- the developing method is an immersion developing method, a spray developing method or a brush. Any method such as a developing method and an ultrasonic developing method can be used.
- the substrate after development may be subjected to additional exposure by a method similar to the above-mentioned exposure method, if necessary, or may be subjected to heat curing treatment.
- the heat curing treatment conditions at this time are selected such that the temperature is in the range of 100° C. to 280° C., preferably in the range of 150° C. to 250° C., and the time is selected in the range of 5 minutes to 60 minutes.
- the size, shape, etc. of the colored spacer of the present invention are appropriately adjusted depending on the specifications of the color filter to which the colored spacer is applied, and the photosensitive colored composition of the present invention is particularly high in height of the spacer and the sub spacer by a photolithography method. It is useful for simultaneously forming colored spacers having different heights, in which case the height of the spacer is usually about 1 to 7 ⁇ m, and the height of the sub spacer is usually about 0.2 to 1.5 ⁇ m lower than that of the spacer. Have.
- the image display device of the present invention includes the colored spacer of the present invention.
- a color filter having the above-described colored spacer of the present invention and a liquid crystal driving side substrate are bonded together to form a liquid crystal cell, and liquid crystal is injected into the formed liquid crystal cell to provide the colored spacer of the present invention.
- the image display device of the present invention such as a liquid crystal display device can be manufactured.
- the inside of the reaction vessel was changed to air, 0.7 parts by mass of trisdimethylaminomethylphenol and 0.12 parts by mass of hydroquinone were added to 43 parts by mass of acrylic acid, and the reaction was continued at 100° C. for 12 hours. Then, 56 parts by mass of tetrahydrophthalic anhydride (THPA) and 0.7 parts by mass of triethylamine were added, and the mixture was reacted at 100° C. for 3.5 hours.
- the weight average molecular weight Mw in terms of polystyrene measured by GPC of the thus obtained alkali-soluble resin-I was 8400, and the acid value was 80 mgKOH/g.
- ⁇ Alkali-soluble resin-II> 124 parts by mass of propylene glycol monomethyl ether acetate was stirred while substituting with nitrogen, and the temperature was raised to 120°C. 4 parts by mass of styrene, 132 parts by mass of glycidyl methacrylate, and 4 parts by mass of monomethacrylate (FA-513M manufactured by Hitachi Chemical Co., Ltd.) having a tricyclodecane skeleton were added dropwise to 2,2′-azobis-2-methylbutyronitrile. 7.2 parts by mass was added dropwise over 3 hours, and stirring was continued at 90° C. for 2 hours.
- the inside of the reaction vessel was changed to air, 0.6 parts by mass of trisdimethylaminomethylphenol and 0.12 parts by mass of hydroquinone were added to 67 parts by mass of acrylic acid, and the reaction was continued at 100° C. for 12 hours. Then, 15 parts by mass of tetrahydrophthalic anhydride (THPA) and 0.6 parts by mass of triethylamine were added, and the reaction was carried out at 100° C. for 3.5 hours.
- THPA tetrahydrophthalic anhydride
- the thus obtained alkali-soluble resin-II had a polystyrene-equivalent weight average molecular weight Mw measured by GPC of 9000, an acid value of 24 mgKOH/g, and a double bond equivalent of 260 g/mol.
- Dispersant-I> "BYK-LPN21116" manufactured by BYK-Chemie (Acrylic AB consisting of an A block having a quaternary ammonium salt group and a tertiary amino group in the side chain and a B block having no quaternary ammonium salt group and a tertiary amino group) Block copolymer having an amine value of 70 mgKOH/g and an acid value of 1 mgKOH/g or less.)
- the A block of Dispersant-I contains repeating units of the following formulas (1a) and (2a), and the B block contains repeating units of the following formula (3a).
- the content ratio of the repeating units of the following formulas (1a), (2a) and (3a) in all the repeating units of the dispersant-I was 11.1 mol%, 22.2 mol% and 6.7 mol% respectively. is there.
- Pigment Dispersions 1 to 7 The pigment, the dispersant, the alkali-soluble resin, and the solvent described in Table 1 were mixed in a mass ratio shown in Table 1 to obtain a mixed solution.
- the blending ratio of the solvent in Table 1 includes the amounts of the dispersant and the solvent derived from the alkali-soluble resin.
- This mixed solution was subjected to a dispersion treatment in the range of 25 to 45° C. for 3 hours with a paint shaker.
- zirconia beads having a diameter of 0.5 mm were used, and a mass 2.5 times that of the dispersion liquid was added. After the dispersion was completed, the beads and the dispersion were separated by a filter to prepare pigment dispersions 1 to 7.
- the photosensitive coloring composition was applied onto a glass substrate with a spin coater so that the film thickness after heat curing would be 1.5 ⁇ m, dried under reduced pressure for 1 minute, and then dried on a hot plate at 90° C. for 100 seconds.
- the obtained coating film was subjected to the whole surface exposure treatment using an ultraviolet ray having an intensity at 365 nm of 40 mW/cm 2 without using a mask so that the exposure amount was 60 mJ/cm 2 .
- the optical density (OD) of the obtained resist-cured film substrate was measured by a transmission densitometer X-Rite 361T (V), and the film thickness was measured by Hitachi High-Technology scanning white light interference microscope VS1530.
- the optical density (unit OD value, OD/ ⁇ m) per unit film thickness was calculated from the optical density (OD) and film thickness, and shown in Table 4.
- the OD value is a numerical value indicating the light-shielding ability, and the larger the numerical value, the higher the light-shielding property.
- ⁇ Roughness evaluation> A substrate for roughness evaluation was obtained in the same manner as the resist cured film substrate, except that the exposure amount was 10 mJ/cm 2 .
- the arithmetic average surface roughness (Sa) of the surface of the obtained substrate in the range of 10 ⁇ m ⁇ 10 ⁇ m was measured with a scanning white interference microscope VS1530 manufactured by Hitachi High Technology Co., Ltd., and the roughness was evaluated according to the following criteria.
- the measurement results and evaluation results are shown in Table 4.
- the measurement mode was Focus mode, the magnification of the objective lens was 50 times, and the center wavelength of the measurement light was 520 nm.
- Sa is the volume of the portion surrounded by the surface shape curved surface and the average surface divided by the measurement area, and the smaller the value, the higher the smoothness.
- a colored spacer was used in the same manner as the resist-cured film substrate except that a glass substrate having an ITO film formed on the surface was used as a substrate, a mask having a 20 ⁇ m opening (circular opening having a diameter of 20 ⁇ m) was used during exposure, and the exposure gap was 150 ⁇ m.
- Got The elastic recovery rate of the obtained colored spacer was measured by the following procedure. Using Fisher Scope H-100 (manufactured by Fisher Instruments), using a flat indenter with a measurement temperature of 23° C. and a diameter of 50 ⁇ m, a load is applied to the colored spacer at a constant speed (5 mN/sec), and the load reaches 300 mN.
- a light resistance evaluation substrate was obtained in the same manner as the resist cured film substrate.
- the absorbance of the obtained substrate at a wavelength of 450 nm was measured using a spectrophotometer U-3500 manufactured by Hitachi High Technology Co., Ltd.
- the substrate was irradiated with light having an intensity of 19 mW/cm 2 at a wavelength of 450 nm for 500 hours in an environment of a temperature of 25° C. and a relative humidity of 50% RH.
- the absorbance of the substrate at a wavelength of 450 nm was similarly measured.
- the rate of change in absorbance at a wavelength of 450 nm was calculated by the following formula, evaluated according to the following criteria, and the results are shown in Table 5.
- the content ratio of the colorant is 2 to 20% by mass in the total solid content
- the content of the purple pigment is contained in the colorant
- the content ratio of the purple pigment in the colorant is It can be seen that it is possible to form a colored spacer having excellent surface roughness and mechanical properties by using the photosensitive coloring composition of 50% by mass or more.
- Example 1 From the comparison between Example 1 and Comparative Example 1, it can be seen that the surface roughness is excellent when the content ratio of the purple pigment in the colorant is 50% by mass or more. It is considered that since the purple pigment has high dispersibility and is uniformly dispersed in the cured film, the solubility at the time of development becomes uniform by containing a large amount of the purple pigment.
- Example 1 Comparative Example 2
- the mechanical properties are good. This is because it is possible to set the content ratio of the alkali-soluble resin or the ethylenically unsaturated compound relatively high by preventing the content ratio of the colorant from becoming too high, and the crosslinking density of the obtained colored spacer becomes high. It is thought that it is because of it.
- the light resistance is excellent when the content ratio of the purple pigment in the colorant is 50% by mass or more. It is considered that the violet pigment has a low absorbance around a wavelength of 450 nm, and contains a large amount of the violet pigment, so that it is less susceptible to the irradiation light having a wavelength of 450 nm.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Mathematical Physics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Optical Filters (AREA)
- Materials For Photolithography (AREA)
Abstract
Description
2018年12月18日に日本国特許庁に出願された日本国特願2018-236121の明細書、特許請求の範囲、図面及び要約書の全内容、並びに、本明細書で引用された文献等に開示された内容の一部又は全部をここに引用し、本明細書の開示内容として取り入れる。
本発明者らが検討したところ、特許文献2や5に記載の感光性着色組成物では、表面粗度と機械的特性を両立した着色スペーサーを得ることが困難であることが判明した。
すなわち、本発明は以下の[1]~[9]の構成を有する。
前記(a)着色剤の含有割合が、感光性着色組成物の全固形分中に2~20質量%であり、
前記(a)着色剤が紫色顔料を含み、かつ、
前記(a)着色剤中の前記紫色顔料の含有割合が50質量%以上であることを特徴とする感光性着色組成物。
[2] 前記紫色顔料が、C.I.ピグメントバイオレット29及びC.I.ピグメントバイオレット23からなる群から選ばれる少なくとも1種を含む、[1]に記載の感光性着色組成物。
[3] 前記(a)着色剤が、さらに橙色顔料を含む、[1]又は[2]に記載の感光性着色組成物。
[4] 前記(d)エチレン性不飽和化合物100質量部に対する前記(b)アルカリ可溶性樹脂の含有割合が150質量部以下である、[1]~[3]のいずれかに記載の感光性着色組成物。
[5] 前記(c)光重合開始剤が、ヘキサアリールビイミダゾール化合物を含有する、[1]~[4]のいずれかに記載の感光性着色組成物。
[6] 着色スペーサー形成用である、[1]~[5]のいずれかに記載の感光性着色組成物。
[8] [7]に記載の硬化物から構成される着色スペーサー。
[9] [8]に記載の着色スペーサーを備える画像表示装置。
なお、本発明において、「(メタ)アクリル」とは「アクリル及び/又はメタクリル」を意味し、「(メタ)アクリレート」、「(メタ)アクリロイル」についても同様である。
本発明において「全固形分」とは、感光性着色組成物中又は後述するインク中に含まれる、溶剤以外の全成分を意味するものとする。
本発明において、「重量平均分子量」とは、GPC(ゲルパーミエーションクロマトグラフィー)によるポリスチレン換算の重量平均分子量(Mw)をさす。
また、本発明において、「アミン価」とは、特に断りのない限り、有効固形分換算のアミン価を表し、分散剤の固形分1gあたりの塩基量と当量のKOHの質量で表される値である。なお、測定方法については後述する。一方、「酸価」とは、特に断りのない限り有効固形分換算の酸価を表し、中和滴定により算出される。
また、本明細書において、顔料の具体例をピグメントナンバーで示すことがあるが、「C.I.ピグメントレッド2」等の用語は、カラーインデックス(C.I.)を意味する。
本発明の感光性着色組成物は、
(a)着色剤
(b)アルカリ可溶性樹脂
(c)光重合開始剤
(d)エチレン性不飽和化合物
を必須成分として含有し、必要に応じて、さらにシランカップリング剤等の密着向上剤、界面活性剤(塗布性向上剤)、顔料誘導体、光酸発生剤、架橋剤、メルカプト化合物、重合禁止剤、現像改良剤、紫外線吸収剤、酸化防止剤等のその他の配合成分を含むものであり、通常、各配合成分が、溶剤に溶解又は分散した状態で使用される。
本発明の感光性着色組成物は、(a)着色剤を含有する。(a)着色剤を含有することで、適度な光吸収性、特に着色スペーサーなどの遮光部材を形成する用途に用いる場合には適度な遮光性を得ることができる。
また、本発明の感光性着色組成物は、(a)着色剤の含有割合が、全固形分中2~20質量%である。このように(a)着色剤を特定量含有することにより、得られる硬化物、特に着色スペーサーにおいて、遮光性と高い機械的特性とを両立することが可能となる。
黄色顔料としては、C.I.ピグメントイエロー1、1:1、2、3、4、5、6、9、10、12、13、14、16、17、24、31、32、34、35、35:1、36、36:1、37、37:1、40、41、42、43、48、53、55、61、62、62:1、63、65、73、74、75、81、83、87、93、94、95、97、100、101、104、105、108、109、110、111、116、117、119、120、126、127、127:1、128、129、133、134、136、138、139、142、147、148、150、151、153、154、155、157、158、159、160、161、162、163、164、165、166、167、168、169、170、172、173、174、175、176、180、181、182、183、184、185、188、189、190、191、191:1、192、193、194、195、196、197、198、199、200、202、203、204、205、206、207、208を挙げることができる。この中でも、分散性、信頼性の観点からC.I.ピグメントイエロー83、117、129、138、139、150、154、155、180、185が好ましく、C.I.ピグメントイエロー138、139、150がさらに好ましく、遮光性の観点からC.I.ピグメントイエロー139が特に好ましい。
なお、分散性や遮光性の点で、C.I.ピグメントブルー15:6、16、60を用いることが好ましく、感光性着色組成物を紫外線で硬化させる場合には、青色顔料としては紫外線吸収率の低いものを使用することが好ましく、かかる観点からはC.I.ピグメントブルー60を用いることがより好ましい。一方で、韓国登録特許第10-1840984号公報に記載のように、信頼性、遮光性、弾性復元率の観点からは、C.I.ピグメントブルー16を用いることが好ましい。
橙色顔料を含む場合、(a)着色剤中の橙色顔料の含有割合は特に限定されないが、5質量%以上が好ましく、10質量%以上がより好ましく、20質量%以上がさらに好ましく、30質量%以上が特に好ましく、また、50質量%以下が好ましく、45質量%以下がより好ましく、40質量%以下がさらに好ましく、35質量%以下が特に好ましい。例えば、5~50質量%が好ましく、10~45質量%がより好ましく、20~40質量%がさらに好ましく、30~35質量%が特に好ましい。前記下限値以上とすることで光学濃度(OD)が高くなる傾向があり、また、前記上限値以下とすることで表面粗度が良好となる傾向がある。
有機黒色顔料として例えば、下記式(1)で表される化合物、該化合物の幾何異性体、該化合物の塩、及び該化合物の幾何異性体の塩からなる群から選ばれる少なくとも1種を含む有機黒色顔料が挙げられる。
R2、R3、R4、R5、R7、R8、R9及びR10は各々独立に水素原子、ハロゲン原子、R11、COOH、COOR11、COO-、CONH2、CONHR11、CONR11R12、CN、OH、OR11、COCR11、OOCNH2、OOCNHR11、OOCNR11R12、NO2、NH2、NHR11、NR11R12、NHCOR12、NR11COR12、N=CH2、N=CHR11、N=CR11R12、SH、SR11、SOR11、SO2R11、SO3R11、SO3H、SO3 -、SO2NH2、SO2NHR11又はSO2NR11R12である;
且つ、R2とR3、R3とR4、R4とR5、R7とR8、R8とR9、及びR9とR10からなる群から選ばれる少なくとも1つの組み合わせは、互いに直接結合することもでき、又は酸素原子、硫黄原子、NH若しくはNR11ブリッジによって互いに結合することもできる;
R11及びR12は各々独立に、炭素数1~12のアルキル基、炭素数3~12のシクロアルキル基、炭素数2~12のアルケニル基、炭素数3~12のシクロアルケニル基又は炭素数2~12のアルキニル基である。
R2、R4、R5、R7、R9及びR10は各々独立に好ましくは水素原子、フッ素原子、又は塩素原子であり、さらに好ましくは水素原子である。
R3及びR8は各々独立に好ましくは水素原子、NO2、OCH3、OC2H5、臭素原子、塩素原子、CH3、C2H5、N(CH3)2、N(CH3)(C2H5)、N(C2H5)2、α-ナフチル、β-ナフチル、SO3H又はSO3 -であり、さらに好ましくは水素原子又はSO3Hである。
好ましくは、R1とR6、R2とR7、R3とR8、R4とR9、およびR5とR10からなる群から選ばれる少なくとも1つの組み合わせが同一であり、より好ましくは、R1はR6と同一であり、R2はR7と同一であり、R3はR8と同一であり、R4はR9と同一であり、かつ、R5はR10と同一である。
この有機黒色顔料は、好ましくは後述される分散剤、溶剤、方法によって分散して使用される。また、分散の際に前記一般式(2)で表される化合物又は該化合物の幾何異性体のスルホン酸誘導体が存在すると、分散性や保存性が向上する場合がある。
また、有機黒色顔料として、光学特性と信頼性の観点から、韓国公開特許第10-2018-0052502号公報に記載されている有機黒色顔料や、韓国公開特許第10-2018-0052864号公報に記載されている有機黒色顔料を用いることが好ましい。
また、無機黒色顔料であるカーボンブラックを用いてもよい。カーボンブラックの例としては、以下のようなカーボンブラックが挙げられる。
デグサ社製:Printex(登録商標、以下同じ。)3、Printex3OP、Printex30、Printex30OP、Printex40、Printex45、Printex55、Printex60、Printex75、Printex80、Printex85、Printex90、Printex A、Printex L、Printex G、Printex P、Printex U、Printex V、SpecialBlack550、SpecialBlack350、SpecialBlack250、SpecialBlack100、SpecialBlack6、SpecialBlack5、SpecialBlack4、Color Black FW1、Color Black FW2、Color Black FW2V、Color Black FW18、Color Black FW200、Color Black S160、Color Black S170
キャボット社製:Monarch(登録商標、以下同じ。)120、Monarch280、Monarch460、Monarch800、Monarch880、Monarch900、Monarch1000、Monarch1100、Monarch1300、Monarch1400、Monarch4630、REGAL(登録商標、以下同じ。)99、REGAL99R、REGAL415、REGAL415R、REGAL250、REGAL250R、REGAL330、REGAL400R、REGAL55R0、REGAL660R、BLACK PEARLS480、PEARLS130、VULCAN(登録商標) XC72R、ELFTEX(登録商標)-8
ビルラー社製:RAVEN(登録商標、以下同じ。)11、RAVEN14、RAVEN15、RAVEN16、RAVEN22、RAVEN30、RAVEN35、RAVEN40、RAVEN410、RAVEN420、RAVEN450、RAVEN500、RAVEN780、RAVEN850、RAVEN890H、RAVEN1000、RAVEN1020、RAVEN1040、RAVEN1060U、RAVEN1080U、RAVEN1170、RAVEN1190U、RAVEN1250、RAVEN1500、RAVEN2000、RAVEN2500U、RAVEN3500、RAVEN5000、RAVEN5250、RAVEN5750、RAVEN7000
なお、感光性着色組成物において、顔料の平均粒子径は、動的光散乱(DLS)により測定された顔料粒子径から求めた値である。粒子径測定は、十分に希釈された感光性着色組成物(通常は希釈して、顔料濃度0.005~0.2質量%程度に調製。但し測定機器により推奨された濃度があれば、その濃度に従う)に対して行い、25℃にて測定する。
アゾ系染料としては、例えば、C.I.アシッドイエロー11、C.I.アシッドオレンジ7、C.I.アシッドレッド37、C.I.アシッドレッド180、C.I.アシッドブルー29、C.I.ダイレクトレッド28、C.I.ダイレクトレッド83、C.I.ダイレクトイエロー12、C.I.ダイレクトオレンジ26、C.I.ダイレクトグリーン28、C.I.ダイレクトグリーン59、C.I.リアクティブイエロー2、C.I.リアクティブレッド17、C.I.リアクティブレッド120、C.I.リアクティブブラック5、C.I.ディスパースオレンジ5、C.I.ディスパースレッド58、C.I.ディスパースブルー165、C.I.ベーシックブルー41、C.I.ベーシックレッド18、C.I.モルダントレッド7、C.I.モルダントイエロー5、C.I.モルダントブラック7等が挙げられる。
この他、フタロシアニン系染料として、例えば、C.I.パッドブルー5等が、キノンイミン系染料として、例えば、C.I.ベーシックブルー3、C.I.ベーシックブルー9等が、キノリン系染料として、例えば、C.I.ソルベントイエロー33、C.I.アシッドイエロー3、C.I.ディスパースイエロー64等が、ニトロ系染料として、例えば、C.I.アシッドイエロー1、C.I.アシッドオレンジ3、C.I.ディスパースイエロー42等が挙げられる。
本発明で用いる(b)アルカリ可溶性樹脂としては、カルボキシル基又は水酸基を含む樹脂であれば特に限定はなく、例えばエポキシ(メタ)アクリレート系樹脂、アクリル系樹脂、カルボキシル基含有エポキシ樹脂、カルボキシル基含有ウレタン樹脂、ノボラック系樹脂、ポリビニルフェノール系樹脂等が挙げられるが、中でも
(b1)エポキシ(メタ)アクリレート系樹脂
(b2)アクリル共重合樹脂
が優れた製版性の観点から好適に用いられる。これらは1種を単独で、或いは複数種を混合して使用することができる。
(b1)エポキシ(メタ)アクリレート系樹脂は、エポキシ樹脂(エポキシ化合物)とα,β-不飽和モノカルボン酸及び/又はカルボキシル基を有するα,β-不飽和モノカルボン酸エステルとの反応物の、反応で生成した水酸基にさらに多塩基酸、及び/又はその無水物を反応させて得られる樹脂である。
また上記、多塩基酸及び/又はその無水物を水酸基と反応させる前に、該水酸基と反応し得る置換基を2個以上有する化合物を反応させた後、多塩基酸、及び/又はその無水物を反応させて得られる樹脂も、上記(b1)エポキシ(メタ)アクリレート系樹脂に含まれる。
このように、エポキシ(メタ)アクリレート系樹脂は化学構造上、実質的にエポキシ基を有さず、かつ「(メタ)アクリレート」に限定されるものではないが、エポキシ化合物(エポキシ樹脂)が原料であり、かつ、「(メタ)アクリレート」が代表例であるので慣用に従いこのように命名されている。
エポキシ樹脂にα,β-不飽和モノカルボン酸及び/又はカルボキシル基を有するα,β-不飽和モノカルボン酸エステルを付加させ、さらに、多塩基酸及び/又はその無水物を反応させることによって得られたアルカリ可溶性樹脂。
<エポキシ(メタ)アクリレート系樹脂(b1-2)>
エポキシ樹脂にα,β-不飽和モノカルボン酸及び/又はカルボキシル基を有するα,β-不飽和モノカルボン酸エステルを付加させ、さらに、多価アルコール、並びに多塩基酸及び/又はその無水物と反応させることによって得られたアルカリ可溶性樹脂。
原料となるエポキシ樹脂の種類としては、クレゾールノボラック型エポキシ樹脂、フェノールノボラック型エポキシ樹脂、ビスフェノールA型エポキシ樹脂、ビスフェノールF型エポキシ樹脂、トリスフェノールメタン型エポキシ樹脂、ビフェニルノボラック型エポキシ樹脂、ナフタレンノボラック型エポキシ樹脂、ジシクロペンタジエンとフェノール又はクレゾールとの重付加反応物とエピハロヒドリンとの反応生成物であるエポキシ樹脂、アダマンチル基含有エポキシ樹脂、フルオレン型エポキシ樹脂等を好適に用いることができ、このように主鎖に芳香族環を有するものを好適に用いることができる。
これらのうち、表面粗度の点から、特に好ましいものは(メタ)アクリル酸である。
α,β-不飽和モノカルボン酸及び/又はカルボキシル基を有するα,β-不飽和モノカルボン酸エステルの使用量は、エポキシ樹脂のエポキシ基1当量に対し0.5~1.2当量の範囲が好ましく、さらに好ましくは0.7~1.1当量の範囲である。α,β-不飽和モノカルボン酸及び/又はカルボキシル基を有するα,β-不飽和モノカルボン酸エステルの使用量を前記下限値以上とすることで不飽和基の導入量の不足が抑制でき、引き続く多塩基酸及び/又はその無水物との反応も十分なものとしやすい傾向がある。一方、前記上限値以下とすることでα,β-不飽和モノカルボン酸及び/又はカルボキシル基を有するα,β-不飽和モノカルボン酸エステルの未反応物の残存を抑制でき、硬化特性を良好なものとしやすい傾向が認められる。
なお、樹脂の二重結合当量は下記式(x)から算出することができる。
(樹脂の分子量)/(樹脂1分子あたりのエチレン性不飽和二重結合の数)・・・(x)
前記式(i)において、Rbは置換基を有していてもよい2価の炭化水素基を表す。
2価の炭化水素基としては、2価の脂肪族基、2価の芳香族環基、1以上の2価の脂肪族基と1以上の2価の芳香族環基とを連結した基が挙げられる。
2価の分岐鎖状脂肪族基の具体例としては、前述の2価の直鎖状脂肪族基に、側鎖としてメチル基、エチル基、n-プロピル基、iso-プロピル基、n-ブチル基、iso-ブチル基、sec-ブチル基、tert-ブチル基等を有する構造が挙げられる。
2価の環状の脂肪族基が有する環の数は特に限定されないが、通常1以上、2以上が好ましく、また、通常10以下、5以下が好ましい。例えば、1~10が好ましく、1~5がより好ましく、2~5がさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。2価の環状の脂肪族基の具体例としては、シクロヘキサン環、シクロヘプタン環、シクロデカン環、シクロドデカン環、ノルボルナン環、イソボルナン環、アダマンタン環等の環から水素原子を2つ除した基が挙げられる。これらの中でも骨格の剛直性の観点から、アダマンタン環から水素原子を2つ除した基が好ましい。
また、2価の芳香族複素環基における芳香族複素環としては、単環であっても縮合環であってもよい。2価の芳香族複素環基としては、例えば、2個の遊離原子価を有する、フラン環、ベンゾフラン環、チオフェン環、ベンゾチオフェン環、ピロール環、ピラゾール環、イミダゾール環、オキサジアゾール環、インドール環、カルバゾール環、ピロロイミダゾール環、ピロロピラゾール環、ピロロピロール環、チエノピロール環、チエノチオフェン環、フロピロール環、フロフラン環、チエノフラン環、ベンゾイソオキサゾール環、ベンゾイソチアゾール環、ベンゾイミダゾール環、ピリジン環、ピラジン環、ピリダジン環、ピリミジン環、トリアジン環、キノリン環、イソキノリン環、シノリン環、キノキサリン環、フェナントリジン環、ペリミジン環、キナゾリン環、キナゾリノン環、アズレン環などの基が挙げられる。これらの中でも光硬化性の観点から、2個の遊離原子価を有するベンゼン環又はナフタレン環が好ましく、2個の遊離原子価を有するベンゼン環がより好ましい。
2価の脂肪族基の数は特に限定されないが、通常1以上、2以上が好ましく、通常10以下、5以下が好ましく、3以下がより好ましい。例えば、1~10が好ましく、1~5がより好ましく、1~3がさらに好ましく、2~3がよりさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
2価の芳香族環基の数は特に限定されないが、通常1以上、2以上が好ましく、通常10以下、5以下が好ましく、3以下がより好ましい。例えば、1~10が好ましく、1~5がより好ましく、1~3がさらに好ましく、2~3がよりさらに好ましい。前記下限値以上とすることで硬化性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
硬化性の観点からは、無置換であることが好ましい。
これらの中でもパターニング特性の観点から、多塩基酸としては、好ましくは、マレイン酸、コハク酸、イタコン酸、フタル酸、テトラヒドロフタル酸、ヘキサヒドロフタル酸、ピロメリット酸、トリメリット酸、ビフェニルテトラカルボン酸であり、より好ましくは、テトラヒドロフタル酸、ビフェニルテトラカルボン酸である。
前記式(ii)において、Rdは、環状炭化水素基を側鎖として有する2価の炭化水素基を表す。
環状炭化水素基としては、脂肪族環基又は芳香族環基が挙げられる。
また、脂肪族環基の炭素数は通常4以上であり、6以上が好ましく、8以上がより好ましく、また、40以下が好ましく、30以下がより好ましく、20以下がさらに好ましく、15以下が特に好ましい。例えば、4~40が好ましく、4~30がより好ましく、6~20がより好ましく、6~15がさらに好ましく、8~15がよりさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
脂肪族環基における脂肪族環の具体例としてはシクロヘキサン環、シクロヘプタン環、シクロデカン環、シクロドデカン環、ノルボルナン環、イソボルナン環、アダマンタン環等が挙げられる。これらの中でも信頼性の観点から、アダマンタン環が好ましい。
芳香族環基としては、芳香族炭化水素環基、芳香族複素環基が挙げられる。また、芳香族環基の炭素数は通常4以上であり、6以上が好ましく、8以上がより好ましく、10以上がよりさらに好ましく、12以上が特に好ましく、また、40以下が好ましく、30以下がより好ましく、20以下がさらに好ましく、15以下が特に好ましい。例えば、4~40が好ましく、6~30がより好ましく、8~20がさらに好ましく、10~15がよりさらに好ましく、12~15が特に好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
芳香族環基における芳香族環の具体例としては、ベンゼン環、ナフタレン環、アントラセン環、フェナントレン環、ペリレン環、テトラセン環、ピレン環、ベンズピレン環、クリセン環、トリフェニレン環、アセナフテン環、フルオランテン環、フルオレン環等が挙げられる。これらの中でもパターニング特性の観点から、フルオレン環が好ましい。
2価の分岐鎖状脂肪族基の具体例としては、前述の2価の直鎖状脂肪族基に、側鎖としてメチル基、エチル基、n-プロピル基、iso-プロピル基、n-ブチル基、iso-ブチル基、sec-ブチル基、tert-ブチル基等を有する構造が挙げられる。
2価の環状の脂肪族基が有する環の数は特に限定されないが、通常1以上、2以上が好ましく、また、通常10以下、5以下、さらに好ましくは3以下が好ましい。例えば、1~10が好ましく、1~5がより好ましく、1~3がさらに好ましく、2~3がよりさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。2価の環状の脂肪族基の具体例としては、シクロヘキサン環、シクロヘプタン環、シクロデカン環、シクロドデカン環、ノルボルナン環、イソボルナン環、アダマンタン環等の環から水素原子を2つ除した基が挙げられる。これらの中でも信頼性の観点から、アダマンタン環から水素原子を2つ除した基が好ましい。
また、芳香族複素環基における芳香族複素環としては、単環であっても縮合環であってもよい。2価の芳香族複素環基としては、例えば、2個の遊離原子価を有する、フラン環、ベンゾフラン環、チオフェン環、ベンゾチオフェン環、ピロール環、ピラゾール環、イミダゾール環、オキサジアゾール環、インドール環、カルバゾール環、ピロロイミダゾール環、ピロロピラゾール環、ピロロピロール環、チエノピロール環、チエノチオフェン環、フロピロール環、フロフラン環、チエノフラン環、ベンゾイソオキサゾール環、ベンゾイソチアゾール環、ベンゾイミダゾール環、ピリジン環、ピラジン環、ピリダジン環、ピリミジン環、トリアジン環、キノリン環、イソキノリン環、シノリン環、キノキサリン環、フェナントリジン環、ペリミジン環、キナゾリン環、キナゾリノン環、アズレン環などの基が挙げられる。2価の芳香族環基の中でもパターニング特性の観点から、2個の遊離原子価を有する、ベンゼン環、ナフタレン環又はフルオレン環が好ましく、2個の遊離原子価を有するフルオレン環がより好ましい。
2価の脂肪族基の数は特に限定されないが、通常1以上、2以上が好ましく、通常10以下、5以下が好ましく、3以下がより好ましい。例えば、1~10が好ましく、1~5がより好ましく、1~3がさらに好ましく、2~3がよりさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
2価の芳香族環基の数は特に限定されないが、通常1以上、2以上が好ましく、通常10以下、5以下が好ましく、3以下がより好ましい。例えば、1~10が好ましく、1~5がより好ましく、1~3がさらに好ましく、2~3がよりさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
前記式(ii-1)において、Rαは、置換基を有していてもよい1価の環状炭化水素基を表す。
環状炭化水素基としては、脂肪族環基又は芳香族環基が挙げられる。
また、脂肪族環基の炭素数は通常4以上であり、6以上が好ましく、8以上がより好ましく、また、40以下が好ましく、30以下がより好ましく、20以下がさらに好ましく、15以下が特に好ましい。例えば、4~40が好ましく、4~30がより好ましく、6~20がさらに好ましく、8~15が特に好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
脂肪族環基における脂肪族環の具体例としてはシクロヘキサン環、シクロヘプタン環、シクロデカン環、シクロドデカン環、ノルボルナン環、イソボルナン環、アダマンタン環等が挙げられる。これらの中でも相溶性の観点から、アダマンタン環が好ましい。
芳香族環基としては、芳香族炭化水素環基、芳香族複素環基が挙げられるまた、芳香族環基の炭素数は通常4以上であり、5以上が好ましく、6以上がより好ましく、また、30以下が好ましく、20以下がより好ましく、15以下がさらに好ましい。例えば、4~30が好ましく、5~20がより好ましく、6~15がさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
芳香族環基における芳香族環の具体例としては、ベンゼン環、ナフタレン環、アントラセン環、フェナントレン環、フルオレン環等が挙げられる。これらの中でも信頼性の観点から、フルオレン環が好ましい。
パターニング特性の観点からは、無置換であることが好ましい。
前記式(ii-2)において、Rβは、置換基を有していてもよい2価の環状炭化水素基を表す。
環状炭化水素基としては、脂肪族環基又は芳香族環基が挙げられる。
また、脂肪族環基の炭素数は通常4以上であり、6以上が好ましく、8以上がより好ましく、また、40以下が好ましく、35以下がより好ましく、30以下がさらに好ましい。例えば、4~40が好ましく、6~35がより好ましく、8~30がさらに好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
脂肪族環基における脂肪族環の具体例としては、シクロヘキサン環、シクロヘプタン環、シクロデカン環、シクロドデカン環、ノルボルナン環、イソボルナン環、アダマンタン環等が挙げられる。これらの中でも相溶性の観点から、アダマンタン環が好ましい。
芳香族環基としては、芳香族炭化水素環基、芳香族複素環基が挙げられるまた、芳香族環基の炭素数は通常4以上であり、6以上が好ましく、8以上がより好ましく、10以上がさらに好ましく、また、40以下が好ましく、30以下がより好ましく、20以下がさらに好ましく、15以下が特に好ましい。例えば、4~40が好ましく、6~30がより好ましく、8~20がさらに好ましく、10~15が特に好ましい。前記下限値以上とすることで現像密着性が良好となる傾向があり、また、前記上限値以下とすることで硬化性が良好となる傾向がある。
芳香族環基における芳香族環の具体例としては、ベンゼン環、ナフタレン環、アントラセン環、フェナントレン環、フルオレン環等が挙げられる。これらの中でも信頼性の観点から、フルオレン環が好ましい。
一方で、信頼性の観点から、Rβが2価の芳香族環基であることが好ましく、2価のフルオレン環基であることがより好ましい。
パターニング特性の観点からは、無置換であることが好ましい。
多塩基酸としては、マレイン酸、コハク酸、イタコン酸、フタル酸、テトラヒドロフタル酸、ヘキサヒドロフタル酸、ピロメリット酸、トリメリット酸、ベンゾフェノンテトラカルボン酸、メチルヘキサヒドロフタル酸、エンドメチレンテトラヒドロフタル酸、クロレンド酸、メチルテトラヒドロフタル酸、ビフェニルテトラカルボン酸から選ばれた1種又は2種以上が挙げられる。
これらの中でもパターニング特性の観点から、多塩基酸としては、好ましくは、マレイン酸、コハク酸、イタコン酸、フタル酸、テトラヒドロフタル酸、ヘキサヒドロフタル酸、ピロメリット酸、トリメリット酸、ビフェニルテトラカルボン酸であり、より好ましくは、テトラヒドロフタル酸、ビフェニルテトラカルボン酸である。
(b2)アクリル共重合樹脂は、カルボキシル基又は水酸基を含むアクリル共重合樹脂であれば特に限定されないが、側鎖にエチレン性不飽和基を有するものであることが好ましい。エチレン性不飽和基を有するものとすることで、露光による光硬化により、現像時にアルカリ現像液による膜減りが起こりにくくなり、表面粗度が良好となる傾向がある。
(b2)アクリル共重合樹脂が、側鎖にエチレン性不飽和基を有する場合、エチレン性不飽和基を有する側鎖を含む部分構造は特に限定されないが、膜の柔軟性に伴うラジカルの発散しやすさの観点から、例えば、下記一般式(I)で表される部分構造を有することが好ましい。
これらの中でもパターニング特性の観点から、好ましくは、マレイン酸、コハク酸、イタコン酸、フタル酸、テトラヒドロフタル酸、ヘキサヒドロフタル酸、ピロメリット酸、トリメリット酸、ビフェニルテトラカルボン酸であり、より好ましくは、テトラヒドロフタル酸、ビフェニルテトラカルボン酸である。
(b2)アクリル共重合樹脂が前記一般式(I)で表される部分構造を含む場合、他に含まれる部分構造は特に限定されないが、現像密着性の観点から、例えば、下記一般式(II)で表される部分構造を有することも好ましい。
前記式(II)において、R4は置換基を有していてもよいアルキル基、置換基を有していてもよい芳香族環基、又は置換基を有していてもよいアルケニル基を表す。
R4におけるアルキル基としては直鎖状、分岐鎖状又は環状のアルキル基が挙げられる。その炭素数は、1以上が好ましく、3以上がより好ましく、5以上がさらに好ましく、8以上が特に好ましく、また、20以下が好ましく、18以下がより好ましく、16以下がさらに好ましく、14以下がよりさらに好ましく、12以下が特に好ましい。例えば、1~20が好ましく、1~18がより好ましく、3~16がさらに好ましく、5~14がよりさらに好ましく、8~12が特に好ましい。前記下限値以上とすることで表面粗度が向上する傾向があり、また、前記上限値以下とすることで残渣が低減する傾向がある。
また、アルキル基が有していてもよい置換基としては、メトキシ基、エトキシ基、クロロ基、ブロモ基、フルオロ基、ヒドロキシ基、アミノ基、エポキシ基、オリゴエチレングリコール基、フェニル基、カルボキシル基、アクリロイル基、メタクリロイル基などが挙げられ、現像性の観点から、ヒドロキシ基、オリゴエチレングリコール基が好ましい。
芳香族炭化水素環基における芳香族炭化水素環としては、単環であっても縮合環であってもよく、例えば、ベンゼン環、ナフタレン環、アントラセン環、フェナントレン環、ペリレン環、テトラセン環、ピレン環、ベンズピレン環、クリセン環、トリフェニレン環、アセナフテン環、フルオランテン環、フルオレン環などが挙げられる。
また、芳香族複素環基における芳香族複素環基としては、単環であっても縮合環であってもよく、例えば、フラン環、ベンゾフラン環、チオフェン環、ベンゾチオフェン環、ピロール環、ピラゾール環、イミダゾール環、オキサジアゾール環、インドール環、カルバゾール環、ピロロイミダゾール環、ピロロピラゾール環、ピロロピロール環、チエノピロール環、チエノチオフェン環、フロピロール環、フロフラン環、チエノフラン環、ベンゾイソオキサゾール環、ベンゾイソチアゾール環、ベンゾイミダゾール環、ピリジン環、ピラジン環、ピリダジン環、ピリミジン環、トリアジン環、キノリン環、イソキノリン環、シノリン環、キノキサリン環、フェナントリジン環、ペリミジン環、キナゾリン環、キナゾリノン環、アズレン環などが挙げられる。これらの中でも現像性の観点から、ベンゼン環、又はナフタレン環が好ましく、ベンゼン環がより好ましい。
また、芳香族環基が有していてもよい置換基としては、メチル基、エチル基、プロピル基、メトキシ基、エトキシ基、クロロ基、ブロモ基、フルオロ基、ヒドロキシ基、アミノ基、エポキシ基、オリゴエチレングリコール基、フェニル基、カルボキシル基などが挙げられ、現像性の観点から、ヒドロキシ基、オリゴエチレングリコール基が好ましい。
(b2)アクリル共重合樹脂が前記一般式(I)で表される部分構造を含む場合、他に含まれる部分構造として、耐熱性、膜強度の観点から下記一般式(III)で表される部分構造が含まれることが好ましい。
前記式(III)においてR6は置換基を有していてもよいアルキル基、置換基を有していてもよいアルケニル基、置換基を有していてもよいアルキニル基、ヒドロキシル基、カルボキシル基、ハロゲン原子、置換基を有していてもよいアルコキシ基、チオール基、又は置換基を有していてもよいアルキルスルフィド基を表す。
R6におけるアルキル基としては、直鎖状、分岐鎖状又は環状のアルキル基が挙げられる。その炭素数は、1以上が好ましく、3以上がより好ましく、5以上がさらに好ましく、また、20以下が好ましく、18以下がより好ましく、16以下がさらに好ましく、14以下がよりさらに好ましく、12以下が特に好ましい。例えば、1~20が好ましく、3~18がより好ましく、3~16がさらに好ましく、5~14がよりさらに好ましく、5~12が特に好ましい。前記下限値以上とすることで表面粗度が向上する傾向があり、また、前記上限値以下とすることで残渣が低減する傾向がある。
また、アルキル基が有していてもよい置換基としては、メトキシ基、エトキシ基、クロロ基、ブロモ基、フルオロ基、ヒドロキシ基、アミノ基、エポキシ基、オリゴエチレングリコール基、フェニル基、カルボキシル基、アクリロイル基、メタクリロイル基などが挙げられ、現像性の観点から、ヒドロキシ基、オリゴエチレングリコール基が好ましい。
(b2)アクリル共重合樹脂が前記一般式(I)で表される部分構造を有する場合、他に含まれる部分構造として、現像性の観点から下記一般式(IV)で表される部分構造を有することも好ましい。
(c)光重合開始剤は、光を直接吸収し、分解反応又は水素引き抜き反応を起こし、重合活性ラジカルを発生する機能を有する成分である。必要に応じて重合促進剤(連鎖移動剤)、増感色素等の付加剤を添加して使用してもよい。
光重合開始剤としては、例えば、日本国特開昭59-152396号公報、日本国特開昭61-151197号公報に記載のチタノセン化合物を含むメタロセン化合物;日本国特開2000-56118号公報に記載のヘキサアリールビイミダゾール誘導体;日本国特開平10-39503号公報記載のハロメチル化オキサジアゾール誘導体、ハロメチル-s-トリアジン誘導体、N-フェニルグリシン等のN-アリール-α-アミノ酸類、N-アリール-α-アミノ酸塩類、N-アリール-α-アミノ酸エステル類等のラジカル活性剤、α-アミノアルキルフェノン誘導体;日本国特開2000-80068号公報、日本国特開2006-36750号公報等に記載されているオキシムエステル系化合物等が挙げられる。
これらの中でも、感度や合成容易性の観点から、R1~R3は各々独立にハロゲン原子であることが好ましく、塩素原子であることがより好ましい。
R21bは芳香環を含む任意の置換基を示す。
R22aは、置換基を有していてもよいアルカノイル基、又は、置換基を有していてもよいアリーロイル基を示す。
nは0又は1の整数を示す。
アルキル基が有していてもよい置換基としては、芳香族環基、水酸基、カルボキシル基、ハロゲン原子、アミノ基、アミド基、4-(2-メトキシ-1-メチル)エトキシ-2-メチルフェニル基又はN-アセチル-N-アセトキシアミノ基などが挙げられ、合成容易性の観点からは、無置換であることが好ましい。
芳香族環基が有していてもよい置換基としては、水酸基、カルボキシル基、ハロゲン原子、アミノ基、アミド基、アルキル基、アルコキシ基、これらの置換基が連結した基などが挙げられ、現像性の観点からアルキル基、アルコキシ基、これらを連結した基が好ましく、連結したアルコキシ基がより好ましい。
これらの中でも、現像性の観点から、R21aが置換基を有していてもよい芳香族環基であることが好ましく、連結したアルコキシ基を置換基に有する芳香族環基であることがさらに好ましい。
アルカノイル基が有していてもよい置換基としては、芳香族環基、水酸基、カルボキシル基、ハロゲン原子、アミノ基、アミド基などが挙げられ、合成容易性の観点からは、無置換であることが好ましい。
アリーロイル基が有していてもよい置換基としては、水酸基、カルボキシル基、ハロゲン原子、アミノ基、アミド基、アルキル基などが挙げられ、合成容易性の観点からは、無置換であることが好ましい。
これらの中でも、感度の観点から、R22aが置換基を有していてもよいアルカノイル基であることが好ましく、無置換のアルカノイル基であることがより好ましく、アセチル基であることがさらに好ましい。
光重合開始剤には、必要に応じて、感応感度を高める目的で、画像露光光源の波長に応じた増感色素、重合促進剤を配合させることができる。増感色素としては、日本国特開平4-221958号公報、日本国特開平4-219756号公報に記載のキサンテン色素、日本国特開平3-239703号公報、日本国特開平5-289335号公報に記載の複素環を有するクマリン色素、日本国特開平3-239703号公報、日本国特開平5-289335号公報に記載の3-ケトクマリン化合物、日本国特開平6-19240号公報に記載のピロメテン色素、その他、日本国特開昭47-2528号公報、日本国特開昭54-155292号公報、日本国特公昭45-37377号公報、日本国特開昭48-84183号公報、日本国特開昭52-112681号公報、日本国特開昭58-15503号公報、日本国特開昭60-88005号公報、日本国特開昭59-56403号公報、日本国特開平2-69号公報、日本国特開昭57-168088号公報、日本国特開平5-107761号公報、日本国特開平5-210240号公報、日本国特開平4-288818号公報に記載のジアルキルアミノベンゼン骨格を有する色素等を挙げることができる。
増感色素もまた1種を単独で用いてもよく、2種以上を併用してもよい。
本発明の感光性着色組成物は、(d)エチレン性不飽和化合物を含む。(d)エチレン性不飽和化合物を含むことで、感度が向上する。
本発明に用いられるエチレン性不飽和化合物は、分子内にエチレン性不飽和基を少なくとも1個有する化合物である。具体的には、例えば(メタ)アクリル酸、(メタ)アクリル酸アルキルエステル、アクリロニトリル、スチレン、及びエチレン性不飽和結合を1個有するカルボン酸と、多価又は1価アルコールのモノエステル、等が挙げられる。
多官能エチレン性単量体の例としては、例えば脂肪族ポリヒドロキシ化合物と不飽和カルボン酸とのエステル;芳香族ポリヒドロキシ化合物と不飽和カルボン酸とのエステル;脂肪族ポリヒドロキシ化合物、芳香族ポリヒドロキシ化合物等の多価ヒドロキシ化合物と、不飽和カルボン酸及び多塩基性カルボン酸とのエステル化反応により得られるエステルなどが挙げられる。
これらは1種を単独で用いてもよく、2種以上を併用してもよい。
本発明の感光性着色組成物は、(e)溶剤を含んでいてもよい。(e)溶剤を含むことで、顔料を溶剤中に分散でき、また、塗布が容易となる傾向がある。
本発明の感光性着色組成物は、通常、(a)着色剤、(b)アルカリ可溶性樹脂、(c)光重合開始剤、及び(d)エチレン性不飽和化合物、並びに必要に応じて使用されるその他の配合成分が、溶剤に溶解又は分散した状態で使用される。溶剤の中でも、分散性や塗布性の観点から有機溶剤が好ましい。
エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、エチレングリコールモノプロピルエーテル、エチレングリコールモノブチルエーテル、プロピレングリコールモノメチルエーテル、プロピレングリコールモノエチルエーテル、プロピレングリコールモノ-n-ブチルエーテル、プロピレングリコール-t-ブチルエーテル、ジエチレングリコールモノメチルエーテル、ジエチレングリコールモノエチルエーテル、ジエチレングリコールモノ-n-ブチルエーテル、メトキシメチルペンタノール、ジプロピレングリコールモノエチルエーテル、ジプロピレングリコールモノメチルエーテル、3-メトキシブタノール、3-メチル-3-メトキシブタノール、トリエチレングリコールモノメチルエーテル、トリエチレングリコールモノエチルエーテル、トリプロピレングリコールメチルエーテルのようなグリコールモノアルキルエーテル類;
エチレングリコールジメチルエーテル、エチレングリコールジエチルエーテル、ジエチレングリコールジメチルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールジプロピルエーテル、ジエチレングリコールジブチルエーテル、ジプロピレングリコールジメチルエーテルのようなグリコールジアルキルエーテル類;
エチレングリコールジアセテート、1,3-ブチレングリコールジアセテート、1,6-ヘキサノールジアセテートなどのグリコールジアセテート類;
シクロヘキサノールアセテートなどのアルキルアセテート類;
アミルエーテル、ジエチルエーテル、ジプロピルエーテル、ジイソプロピルエーテル、ジブチルエーテル、ジアミルエーテル、エチルイソブチルエーテル、ジヘキシルエーテルのようなエーテル類;
エタノール、プロパノール、ブタノール、ヘキサノール、シクロヘキサノール、エチレングリコール、プロピレングリコール、ブタンジオール、ジエチレングリコール、ジプロピレングリコール、トリエチレングリコール、メトキシメチルペンタノール、グリセリン、ベンジルアルコールのような1価又は多価アルコール類;
n-ペンタン、n-オクタン、ジイソブチレン、n-ヘキサン、ヘキセン、イソプレン、ジペンテン、ドデカンのような脂肪族炭化水素類;
シクロヘキサン、メチルシクロヘキサン、メチルシクロヘキセン、ビシクロヘキシルのような脂環式炭化水素類;
アミルホルメート、エチルホルメート、酢酸エチル、酢酸ブチル、酢酸プロピル、酢酸アミル、メチルイソブチレート、エチレングリコールアセテート、エチルプロピオネート、プロピルプロピオネート、酪酸ブチル、酪酸イソブチル、イソ酪酸メチル、エチルカプリレート、ブチルステアレート、エチルベンゾエート、3-エトキシプロピオン酸メチル、3-エトキシプロピオン酸エチル、3-メトキシプロピオン酸メチル、3-メトキシプロピオン酸エチル、3-メトキシプロピオン酸プロピル、3-メトキシプロピオン酸ブチル、γ-ブチロラクトンのような鎖状又は環状エステル類;
3-メトキシプロピオン酸、3-エトキシプロピオン酸のようなアルコキシカルボン酸類;
ブチルクロリド、アミルクロリドのようなハロゲン化炭化水素類;
メトキシメチルペンタノンのようなエーテルケトン類;
アセトニトリル、ベンゾニトリルのようなニトリル類等。
これらの有機溶剤は、単独で用いてもよく、2種以上を併用してもよい。
また、グリコールアルキルエーテルアセテート類は、単独で使用してもよいが、他の有機溶剤を併用してもよい。併用する有機溶剤として、特に好ましいのはグリコールモノアルキルエーテル類である。中でも、特に組成物中の構成成分の溶解性からプロピレングリコールモノメチルエーテルが好ましい。なお、グリコールモノアルキルエーテル類は極性が高く、添加量が多すぎると顔料が凝集しやすく、後に得られる感光性着色組成物の粘度が上がっていくなどの保存安定性が低下する傾向があるので、溶剤中のグリコールモノアルキルエーテル類の割合は5質量%~30質量%が好ましく、5質量%~20質量%がより好ましい。
好ましい高沸点溶剤として、例えば前述の各種溶剤の中ではジエチレングリコールモノ-n-ブチルエーテルアセテート、ジエチレングリコールモノエチルエーテルアセテート、ジプロピレングリコールメチルエーテルアセテート、1,3-ブチレングリコールジアセテート、1,6-ヘキサノールジアセテート、トリアセチンなどが挙げられる。
本発明の感光性着色組成物においては、(a)着色剤を微細に分散させてその分散状態を安定化させる目的で(f)分散剤を含んでいてもよい。
(f)分散剤としては、官能基を有する高分子分散剤が好ましく、さらに、分散安定性の面からカルボキシル基;リン酸基;スルホン酸基;又はこれらの塩基;一級、二級又は三級アミノ基;四級アンモニウム塩基;ピリジン、ピリミジン、ピラジン等の含窒素ヘテロ環由来の基、等の官能基を有する高分子分散剤が好ましい。中でも特に、一級、二級又は三級アミノ基;四級アンモニウム塩基;ピリジン、ピリミジン、ピラジン等の含窒素ヘテロ環由来の基、等の塩基性官能基を有する高分子分散剤が顔料を分散する際に少量の分散剤で分散することができるとの観点から特に好ましい。
これらの高分子分散剤は1種を単独で使用してもよく、又は2種以上を併用してもよい。
これらのうち、顔料の分散性の観点から、(f)分散剤は官能基を有するウレタン系高分子分散剤及び/又はアクリル系高分子分散剤を含むことが好ましく、アクリル系高分子分散剤を含むことが特に好ましい。
また分散性、保存性の面から、塩基性官能基を有し、ポリエステル結合及び/又はポリエーテル結合を有する高分子分散剤が好ましい。
ウレタン系高分子分散剤として好ましい化学構造を具体的に例示するならば、例えば、ポリイソシアネート化合物と、分子内に水酸基を1個又は2個有する数平均分子量300~10000の化合物と、同一分子内に活性水素と3級アミノ基を有する化合物とを反応させることによって得られる、重量平均分子量1000~200000の分散樹脂等が挙げられる。これらをベンジルクロリド等の四級化剤で処理することで、3級アミノ基の全部又は一部を4級アンモニウム塩基にすることができる。
ポリエーテルグリコールとしては、ポリエーテルジオール、ポリエーテルエステルジオール、及びこれら2種類以上の混合物が挙げられる。ポリエーテルジオールとしては、アルキレンオキシドを単独又は共重合させて得られるもの、例えばポリエチレングリコール、ポリプロピレングリコール、ポリエチレン-プロピレングリコール、ポリオキシテトラメチレングリコール、ポリオキシヘキサメチレングリコール、ポリオキシオクタメチレングリコール及びそれらの2種以上の混合物が挙げられる。
これらは1種を単独で用いてもよく、2種以上を併用してもよい。
活性水素、即ち、酸素原子、窒素原子又は硫黄原子に直接結合している水素原子としては、水酸基、アミノ基、チオール基等の官能基中の水素原子が挙げられ、中でもアミノ基、特に1級のアミノ基の水素原子が好ましい。
このような同一分子内に活性水素と3級アミノ基を有する化合物を例示するならば、N,N-ジメチル-1,3-プロパンジアミン、N,N-ジエチル-1,3-プロパンジアミン、N,N-ジプロピル-1,3-プロパンジアミン、N,N-ジブチル-1,3-プロパンジアミン、N,N-ジメチルエチレンジアミン、N,N-ジエチルエチレンジアミン、N,N-ジプロピルエチレンジアミン、N,N-ジブチルエチレンジアミン、N,N-ジメチル-1,4-ブタンジアミン、N,N-ジエチル-1,4-ブタンジアミン、N,N-ジプロピル-1,4-ブタンジアミン、N,N-ジブチル-1,4-ブタンジアミン等が挙げられる。
これらは1種を単独で用いてもよく、2種以上を併用してもよい。
ウレタン系高分子分散剤の重量平均分子量(Mw)は通常1000~200000、好ましくは2000~100000、より好ましくは3000~50000である。前記下限値以上とすることで分散性及び分散安定性が良好となる傾向があり、前記上限値以下とすることで溶解性や分散性の低下を抑制しやすい傾向がある。
該A-B又はB-A-Bブロック共重合体は、例えば、以下に示すリビング重合法にて調製される。
リビング重合法には、アニオンリビング重合法、カチオンリビング重合法、ラジカルリビング重合法があり、このうち、アニオンリビング重合法は、重合活性種がアニオンであり、例えば下記スキームで表される。
また、本発明で用いることができるA-Bブロック共重合体、B-A-Bブロック共重合体1g中の4級アンモニウム塩基の量は、通常0.1~10mmolであることが好ましく、この範囲内にすることで良好な分散性を確保できる傾向がある。
ここで、これらのブロック共重合体等の分散剤のアミン価は、分散剤試料中の溶剤を除いた固形分1gあたりの塩基量と当量のKOHの質量で表し、次の方法により測定する。
100mLのビーカーに分散剤試料の0.5~1.5gを精秤し、50mLの酢酸で溶解する。pH電極を備えた自動滴定装置を使って、この溶液を0.1mol/LのHClO4酢酸溶液にて中和滴定する。滴定pH曲線の変曲点を滴定終点とし次式によりアミン価を求める。
〔但し、W:分散剤試料秤取量[g]、V:滴定終点での滴定量[mL]、S:分散剤試料の固形分濃度[質量%]を表す。〕
また、このブロック共重合体の酸価は、該酸価の元となる酸性基の有無及び種類にもよるが、一般に低い方が好ましく、通常10mgKOH/g以下であり、その重量平均分子量(Mw)は、1000~100000の範囲が好ましい。前記範囲内とすることで良好な分散性を確保できる傾向がある。
同様に、上記式(ii)のR35及びR36における、置換基を有していてもよいアリール基としては、上記式(i)のR31~R33として例示したものを好ましく採用することができる。また、上記式(ii)のR35及びR36における、置換基を有していてもよいアラルキル基としては、上記式(i)のR31~R33として例示したものを好ましく採用することができる。
また、上記式(i)において、対アニオンのY-としては、Cl-、Br-、I-、ClO4 -、BF4 -、CH3COO-、PF6 -等が挙げられる。
R38における、アルキル基が有していてもよい置換基としては、ハロゲン原子、アルコキシ基等が挙げられる。また、アリール基又はアラルキル基が有していてもよい置換基としては、鎖状のアルキル基、ハロゲン原子、アルコキシ基等が挙げられる。また、R38で示される鎖状のアルキル基には、直鎖状及び分岐鎖状のいずれも含まれる。
本発明の感光性着色組成物には、上述の成分の他、シランカップリング剤等の密着向上剤、界面活性剤(塗布性向上剤)、顔料誘導体、光酸発生剤、架橋剤、メルカプト化合物、重合禁止剤、現像改良剤、紫外線吸収剤、酸化防止剤等の添加剤を適宜配合することができる。
本発明の感光性着色組成物には、基板との密着性を改善するため、密着向上剤を含有させてもよい。密着向上剤としては、シランカップリング剤、燐酸基含有化合物等が好ましい。
シランカップリング剤の種類としては、エポキシ系、(メタ)アクリル系、アミノ系等種々のものを、1種を単独で、或いは2種以上を混合して使用できる。
燐酸基含有化合物としては、(メタ)アクリロイル基含有ホスフェート類が好ましく、下記一般式(g1)、(g2)又は(g3)で表されるものが好ましい。
これらの燐酸基含有化合物は、1種類を単独で用いても、2種以上を組み合わせて使用してもよい。
本発明の感光性着色組成物には、塗布性向上ため、界面活性剤を含有させてもよい。
このような界面活性剤としては、例えば、TSF4460(モメンティブ・パフォーマンス・マテリアルズ社製)、DFX-18(ネオス社製)、BYK-300、BYK-325、BYK-330(ビックケミー社製)、KP340(信越シリコーン社製)、メガファック(登録商標、以下同じ。)F-470、メガファックF-475、メガファックF-478、メガファックF-554、メガファックF-559(DIC社製)、SH7PA(東レ・ダウコーニング社製)、DS-401(ダイキン社製)、L-77(日本ユニカー社製)、FC4430(3M社製)等が挙げられる。
なお、界面活性剤は、1種を用いてもよく、2種以上を任意の組み合わせ及び比率で併用してもよい。
本発明の感光性着色組成物には、分散性、保存性向上のため、分散助剤として顔料誘導体を含有させてもよい。
顔料誘導体としてはアゾ系、フタロシアニン系、キナクリドン系、ベンズイミダゾロン系、キノフタロン系、イソインドリノン系、ジオキサジン系、アントラキノン系、インダンスレン系、ペリレン系、ペリノン系、ジケトピロロピロール系、ジオキサジン系等の誘導体が挙げられるが、中でもフタロシアニン系、キノフタロン系が好ましい。
顔料誘導体の置換基としてはスルホン酸基、スルホンアミド基及びその4級塩、フタルイミドメチル基、ジアルキルアミノアルキル基、水酸基、カルボキシル基、アミド基等が顔料骨格に直接又はアルキル基、アリール基、複素環基等を介して結合したものが挙げられ、好ましくはスルホン酸基である。またこれら置換基は一つの顔料骨格に複数置換していてもよい。
光酸発生剤とは、紫外線により酸を発生することができる化合物であり、露光を行った際に発生する酸の作用により、例えばメラミン化合物等の架橋剤があることで架橋反応を進行させることとなる。係る光酸発生剤の中でも、溶剤に対する溶解性、特に感光性着色組成物に使われる溶剤に対する溶解性が大きいものが好ましいものであり、例えば、ジフェニルヨードニウム、ジトリルヨードニウム、フェニル(p-アニシル)ヨードニウム、ビス(m-ニトロフェニル)ヨードニウム、ビス(p-tert-ブチルフェニル)ヨードニウム、ビス(p-クロロフェニル)ヨードニウム、ビス(n-ドデシル)ヨードニウム、p-イソブチルフェニル(p-トリル)ヨードニウム、p-イソプロピルフェニル(p-トリル)ヨードニウムなどのジアリールヨードニウム、或いはトリフェニルスルホニウムなどのトリアリールスルホニウムのクロリド、ブロミド、或いはホウフッ化塩、ヘキサフルオロフォスフェート塩、ヘキサフルオロアルセネート塩、芳香族スルホン酸塩、テトラキス(ペンタフルオロフェニル)ボレート塩等や、ジフェニルフェナシルスルホニウム(n-ブチル)トリフェニルボレート等のスルホニウム有機ホウ素錯体類、或いは、2-メチル-4,6-ビストリクロロメチルトリアジン、2-(4-メトキシフェニル)-4,6-ビストリクロロメチルトリアジンなどのトリアジン化合物等を挙げることができるがこの限りではない。
本発明の感光性着色組成物には、さらに架橋剤を加えることができ、例えばメラミン又はグアナミン系の化合物を用いることができる。これら架橋剤としては、例えば、下記一般式(6)で示されるメラミン又はグアナミン系の化合物を挙げることができる。
ここで、炭素数6~12のアリール基は典型的にはフェニル基、1-ナフチル基又は2-ナフチル基であり、これらのフェニル基やナフチル基には、アルキル基、アルコキシ基、ハロゲン原子などの置換基が結合していてもよい。アルキル基及びアルコキシ基は、それぞれ炭素数1~6程度であることができる。R68で表されるアルキル基は、上記の中でも、メチル基又はエチル基、とりわけメチル基であることが好ましい。
2,6-ビス(ヒドロキシメチル)-4-メチルフェノール、4-tert-ブチル-2,6-ビス(ヒドロキシメチル)フェノール、5-エチル-1,3-ビス(ヒドロキシメチル)ペルヒドロ-1,3,5-トリアジン-2-オン(通称N-エチルジメチロールトリアゾン)又はそのジメチルエーテル体、ジメチロールトリメチレン尿素又はそのジメチルエーテル体、3,5-ビス(ヒドロキシメチル)ペルヒドロ-1,3,5-オキサジアジン-4-オン(通称ジメチロールウロン)又はそのジメチルエーテル体、テトラメチロールグリオキザールジウレイン又はそのテトラメチルエーテル体。
重合促進剤として、また、硬化物表面の硬化性向上、表面粗度向上のため、メルカプト化合物を添加することも可能である。
メルカプト化合物としては、芳香族環を有するメルカプト基含有化合物と脂肪族系のメルカプト基含有化合物が挙げられる。
これらのうち、光硬化性の観点から、Zは-S-又は-NH-が好ましく、-NH-がより好ましい。
また、光硬化性の観点から、R61、R62、R63、及びR64は各々独立に、水素原子、炭素数1~4アルキル基又は炭素数1~4のアルコキシ基が好ましく、水素原子がより好ましい。
また、R71及びR72のアルキル基としては、光硬化性の観点から、炭素数1~3のものが好ましい。光硬化性の観点から、R71及びR72のうちの少なくとも一方、例えば、R72は水素原子であることが好ましく、この場合において、R71は水素原子又は炭素数1~3のアルキル基であることが好ましい。
また、光硬化性の観点から、ペンタエリスリトールテトラキス(3-メルカプトプロピオネート)、及びペンタエリスリトールテトラキス(3-メルカプトブチレート)からなる群から選択された1以上を用いることが好ましい。
形状制御の観点から、重合禁止剤を含有させてもよい。
重合禁止剤としては、ハイドロキノン、ハイドロキノンモノメチルエーテル、メチルヒドロキノン、メトキシフェノール、2,6-ジ-tert-ブチル-4-クレゾール(BHT)などが挙げられる。これらの中でも形状制御の観点から、2,6-ジ-tert-ブチル-4-クレゾールが好ましい。また人体への安全性の観点から、ハイドロキノンモノメチルエーテル、メチルヒドロキノンが好ましい。
重合禁止剤は、1種又は2種以上を含有させてもよい。(b)アルカリ可溶性樹脂を製造する際に、当該樹脂中に重合禁止剤が含まれることがあり、それを本発明の重合禁止剤として用いてもよいし、樹脂中に重合禁止剤の他に、それと同一、又は異なる重合禁止剤を感光性着色組成物製造時に添加してもよい。
本発明の感光性着色組成物において、(b)アルカリ可溶性樹脂の含有割合は特に限定されないが、全固形分中に通常5質量%以上、好ましくは10質量%以上、より好ましくは15質量%以上、さらに好ましくは20質量%以上、特に好ましくは25質量%以上であり、通常80質量%以下、好ましくは70質量%以下、より好ましくは60質量%以下、さらに好ましくは50質量%以下、よりさらに好ましくは40質量%以下、特に好ましくは35質量%以下である。例えば、5~80質量%が好ましく、5~70質量%がより好ましく、10~60質量%がさらに好ましく、15~50質量%がよりさらに好ましく、20~40質量%が特に好ましく、25~35質量%がとりわけ好ましい。(b)アルカリ可溶性樹脂の含有割合を前記下限値以上とすることで、現像溶解性が向上する傾向がある。また前記上限値以下とすることで、機械的特性が向上する傾向がある。
本発明の感光性着色組成物は、着色スペーサー形成用に好適に使用することができ、着色スペーサーとして用いるとの観点からは、その塗膜の膜厚1μm当たりの光学濃度(OD)が高い方が好ましい。本発明の感光性着色組成物を硬化して得られる着色スペーサー単独では、0.1以上であることが好ましく、0.15以上であることがより好ましく、0.2以上であることがさらに好ましく、0.25以上であることがよりさらに好ましい。ここで光学濃度(OD)は後述する方法にて測定した値である。
本発明の感光性着色組成物は、常法に従って製造される。
通常、(a)着色剤は、予めペイントコンディショナー、サンドグラインダー、ボールミル、ロールミル、ストーンミル、ジェットミル、ホモジナイザー等を用いて分散処理することが好ましい。分散処理により(a)着色剤が微粒子化されるため、感光性着色組成物の塗布特性が向上する。
このように、感光性着色組成物を製造する工程において、(a)着色剤、(e)溶剤、及び(f)分散剤を少なくとも含有する顔料分散液を製造することが好ましい。顔料分散液に用いることができる(a)着色剤、(e)溶剤、及び(f)分散剤としては、それぞれ感光性着色組成物に用いることができるものとして記載したものを好ましく採用することができる。
サンドグラインダーで(a)着色剤を分散させる場合には、0.1~8mm程度の粒子径のガラスビーズ又はジルコニアビーズが好ましく用いられる。分散処理条件は、温度は通常0℃から100℃であり、好ましくは室温から80℃の範囲である。分散時間は液の組成及び分散処理装置のサイズ等により適正時間が異なる傾向があり、適宜調節すればよい。顔料分散液又は感光性着色組成物を基板に塗布した際の20度鏡面光沢度(JIS Z8741)が50~300の範囲となるように、インクの光沢を制御することが分散の目安である。前記下限値以上とすることで、分散処理が十分でなく荒い顔料((a)着色剤)粒子の残存を抑制でき、現像性、密着性、解像性等を十分なものとしやすい傾向がある。また、前記上限値以下とすることで、顔料が破砕して超微粒子が多数生じるのを抑制でき、分散安定性を良好なものとすることができる傾向がある。
次に、上記分散処理により得られたインクと、感光性着色組成物中に含まれる、上記の他の成分を混合し、均一な溶液とする。感光性着色組成物の製造工程においては、微細なゴミが液中に混じることが多いため、得られた感光性着色組成物はフィルター等により濾過処理することが望ましい。
本発明の硬化物は、本発明の感光性着色組成物を硬化させることで得られる。感光性着色組成物を硬化してなる硬化物は、着色スペーサーとして好適に用いることができる。
次に、本発明の硬化物から構成される、本発明の着色スペーサーについて、その製造方法に従って説明する。
着色スペーサーを形成するための支持体としては、適度の強度があれば、その材質は特に限定されるものではない。主に透明基板が使用されるが、材質としては、例えば、ポリエチレンテレフタレートなどのポリエステル系樹脂、ポリプロピレン、ポリエチレンなどのポリオレフィン系樹脂、ポリカーボネート、ポリメチルメタクリレート、ポリスルフォンなどの熱可塑性樹脂製シート、エポキシ樹脂、不飽和ポリエステル樹脂、ポリ(メタ)アクリル系樹脂などの熱硬化性樹脂シート、又は各種ガラスなどが挙げられる。この中でも、耐熱性の観点からガラス、耐熱性樹脂が好ましい。また、基板の表面にITO、IZO等の透明電極が成膜されている場合もある。透明基板以外では、TFTアレイ上に形成することも可能である。
透明基板の厚さは、通常0.05~10mm、好ましくは0.1~7mmの範囲とされる。また各種樹脂の薄膜形成処理を行う場合、その膜厚は、通常0.01~10μm、好ましくは0.05~5μmの範囲である。
本発明の感光性着色組成物は、公知のカラーフィルター用感光性着色組成物と同様の用途に使用することができるが、以下、着色スペーサーとして使用される場合について、その形成方法を説明する。
[1]基板への供給方法
本発明の感光性着色組成物は、通常、溶剤に溶解或いは分散された状態で、支持体上へ供給される。その供給方法としては、従来公知の方法、例えば、スピナー法、ワイヤーバー法、フローコート法、ダイコート法、ロールコート法、スプレーコート法などによって行うことができる。また、インクジェット法や印刷法などにより、パターン状に供給されてもよい。中でも、ダイコート法によれば、塗布液の使用量が大幅に削減され、かつ、スピンコート法によった際に付着するミストなどの影響がない、異物発生が抑制されるなど、総合的な観点から好ましい。
基板上に感光性着色組成物を供給した後の乾燥は、ホットプレート、IRオーブン、コンベクションオーブンを使用した乾燥方法によることが好ましい。また、温度を高めず、減圧チャンバー内で乾燥を行う、減圧乾燥法を組み合わせてもよい。
露光は、感光性着色組成物の塗布膜上に、ネガのマスクパターンを重ね、このマスクパターンを介し、紫外線又は可視光線の光源を照射して行う。露光マスクを用いて露光を行う場合には、露光マスクを感光性着色組成物の塗布膜に近接させる方法や、露光マスクを感光性着色組成物の塗布膜から離れた位置に配置し、該露光マスクを介した露光光を投影する方法によってもよい。また、マスクパターンを用いないレーザー光による走査露光方式によってもよい。この際、必要に応じ、酸素による光重合性層の感度の低下を防ぐため、脱酸素雰囲気下で行ったり、光重合性層上にポリビニルアルコール層などの酸素遮断層を形成した後に露光を行ったりしてもよい。
中間透過開口部は、例えば、微小な多角形の遮光ユニットを有するマトリックス状遮光パターンによって作成する方法等が知られている。また吸収体として、クロム系、モリブデン系、タングステン系、シリコン系などの材料の膜によって、光透過率を制御し作成する方法等が知られている。
また、近接露光方式の場合には、露光対象とマスクパターンとの距離としては、通常10μm以上、好ましくは50μm以上、より好ましくは75μm以上であり、通常500μm以下、好ましくは400μm以下、より好ましくは300μm以下である。
上記の露光を行った後、アルカリ性化合物の水溶液、又は有機溶剤を用いる現像によって、基板上に画像パターンを形成することができる。この水溶液には、さらに界面活性剤、有機溶剤、緩衝剤、錯化剤、染料又は顔料を含ませることができる。
現像の後の基板には、必要により上記の露光方法と同様な方法により追露光を行ってもよく、また熱硬化処理を行ってもよい。この際の熱硬化処理条件は、温度は100℃~280℃の範囲、好ましくは150℃~250℃の範囲で選ばれ、時間は5分間~60分間の範囲で選ばれる。
本発明の画像表示装置は、本発明の着色スペーサーを備える。
例えば、上述した本発明の着色スペーサーを有するカラーフィルターと、液晶駆動側基板とを貼り合わせて液晶セルを形成し、形成した液晶セルに液晶を注入することで、本発明の着色スペーサーを備えた、液晶表示装置等の本発明の画像表示装置を製造することができる。
以下の実施例及び比較例で用いた感光性着色組成物の構成成分は次の通りである。
プロピレングリコールモノメチルエーテルアセテート145質量部を窒素置換しながら攪拌し、120℃に昇温した。ここにスチレン10質量部、グリシジルメタクリレート85質量部およびトリシクロデカン骨格を有するモノメタクリレート(日立化成社製FA-513M)66質量部を滴下し、2,2’-アゾビス-2-メチルブチロニトリル8.5質量部を3時間かけて滴下し、さらに90℃で2時間攪拌し続けた。次に反応容器内を空気に変え、アクリル酸43質量部にトリスジメチルアミノメチルフェノール0.7質量部及びハイドロキノン0.12質量部を投入し、100℃で12時間反応を続けた。その後、テトラヒドロ無水フタル酸(THPA)56質量部、トリエチルアミン0.7質量部を加え、100℃で3.5時間反応させた。こうして得られたアルカリ可溶性樹脂-IのGPCにより測定したポリスチレン換算の重量平均分子量Mwは8400、酸価は80mgKOH/gであった。
プロピレングリコールモノメチルエーテルアセテート124質量部を窒素置換しながら攪拌し、120℃に昇温した。ここにスチレン4質量部、グリシジルメタクリレート132質量部およびトリシクロデカン骨格を有するモノメタクリレート(日立化成社製FA-513M)4質量部を滴下し、2,2’-アゾビス-2-メチルブチロニトリル7.2質量部を3時間かけて滴下し、さらに90℃で2時間攪拌し続けた。次に反応容器内を空気に変え、アクリル酸67質量部にトリスジメチルアミノメチルフェノール0.6質量部及びハイドロキノン0.12質量部を投入し、100℃で12時間反応を続けた。その後、テトラヒドロ無水フタル酸(THPA)15質量部、トリエチルアミン0.6質量部を加え、100℃で3.5時間反応させた。こうして得られたアルカリ可溶性樹脂-IIのGPCにより測定したポリスチレン換算の重量平均分子量Mwは9000、酸価は24mgKOH/g、二重結合当量は260g/molであった。
ビックケミー社製「BYK-LPN21116」(側鎖に4級アンモニウム塩基及び3級アミノ基を有するAブロックと、4級アンモニウム塩基及び3級アミノ基を有さないBブロックからなる、アクリル系A-Bブロック共重合体。アミン価は70mgKOH/g。酸価は1mgKOH/g以下。)
分散剤-IのAブロック中には、下記式(1a)及び(2a)の繰り返し単位が含まれ、Bブロック中には下記式(3a)の繰り返し単位が含まれる。分散剤-Iの全繰り返し単位に占める下記式(1a)、(2a)、及び(3a)の繰り返し単位の含有割合はそれぞれ11.1モル%、22.2モル%、6.7モル%である。
PGMEA:プロピレングリコールモノメチルエーテルアセテート
<溶剤-II>
MB:3-メトキシブタノール
黒金化成社製 2,2’-ビス(o-クロロフェニル)-4,5,4’,5’-テトラフェニル-1,2-ビイミダゾール
<光重合開始剤-II>
BASF社製 Irgacure(登録商標)369
<メルカプト化合物>
東京化成社製 2-メルカプトベンゾチアゾール
日本化薬社製 DPHA(ジペンタエリスリトールヘキサアクリレート)
DIC社製 メガファック F-554
<添加剤-I>
日本化薬社製 KAYAMER(登録商標) PM-21(メタクリロイル基含有ホスフェート)
<添加剤-II>
精工化学社製 メチルヒドロキノン
表1に記載の顔料、分散剤、アルカリ可溶性樹脂、及び溶剤を、表1に記載の質量比となるように混合して混合液を得た。なお表1中の溶剤の配合割合には、分散剤及びアルカリ可溶性樹脂由来の溶剤の量も含まれる。
この混合液をペイントシェーカーにより25~45℃の範囲で3時間分散処理を行った。ビーズとしては、0.5mmφのジルコニアビーズを用い、分散液の2.5倍の質量を加えた。分散終了後、フィルターによりビーズと分散液を分離して、顔料分散液1~7を調製した。
[実施例1~8及び比較例1~5]
上記調製した顔料分散液1~7を用いて、全固形分中の各成分の固形分の比率が表2又は表3の配合割合となるように各成分を加え、さらに全固形分の含有割合が19質量%となるようにPGMEAを加え、攪拌、溶解させて、感光性着色組成物1~13を調製した。得られた各感光性着色組成物を用いて、後述する方法で評価を行った。
ガラス基板上に感光性着色組成物を加熱硬化後の膜厚が1.5μmとなるようにスピンコーターにて塗布し、1分間減圧乾燥した後に、ホットプレートで90℃にて100秒間乾燥した。得られた塗膜に、マスクを使用せず、365nmでの強度が40mW/cm2である紫外線を用いて、露光量が60mJ/cm2となるよう全面露光処理を施した。
続いて、0.05質量%の水酸化カリウムと0.08質量%のノニオン性界面活性剤(花王社製「A-60」)を含有する水溶液からなる現像液を用い、25℃において水圧0.15MPaのシャワー現像を100秒間施した後、純水にて現像を停止し、水洗スプレーにて洗浄した。当該基板をオーブン中、230℃で20分間加熱硬化させることで、レジスト硬化膜基板を得た。
露光量を10mJ/cm2とした以外は、前記レジスト硬化膜基板と同様にして、粗度評価用基板を得た。
得られた基板の10μm×10μmの範囲の表面の算術平均表面粗さ(Sa)を日立ハイテクノロジー社製走査型白色干渉顕微鏡 VS1530により測定し、以下の基準で粗度の評価を行った。測定結果と評価結果を表4に示した。なお、測定モードはFocusモードとし、対物レンズの倍率は50倍、測定光の中心波長は520nmとした。
Saは、表面形状曲面と平均面で囲まれた部分の体積を測定面積で割ったものであり、数値が小さいほど平滑性が高いことを示す。
A:2nm以下
B:2nm超過
基板として表面にITO膜を形成したガラス基板を用い、露光時に20μm開口(直径20μmの円形開口)を有するマスクを用い、露光ギャップ150μmとした以外は前記レジスト硬化膜基板と同様にして、着色スペーサーを得た。
得られた着色スペーサーの弾性復元率を以下の手順で測定した。フィッシャースコープH-100(フィッシャーインストルメンツ社製)を用いて、測定温度23℃、直径50μmの平面圧子を使用し、一定速度(5mN/sec)で着色スペーサーに荷重を加え、荷重が300mNに達したところで5秒間保持し、続いて同速度にて除荷を行い、荷重-変位曲線を得た。この荷重-変位曲線より、最大変位H[max]、最終変位H[Last](荷重が0mNになり5秒間保持した後の変位)を測定した。次いで、下記式により弾性復元率を算出し、以下の基準で評価した。その結果を表4に示した。
A:95%以上
B:95%未満
前記レジスト硬化膜基板と同様にして、耐光性評価用基板を得た。
得られた基板の波長450nmにおける吸光度を、日立ハイテクノロジー社製分光光度計U-3500を用いて測定した。
次に、前記基板を気温25℃、相対湿度50%RHの環境下で、波長450nmでの強度が19mW/cm2の光を、膜面側から500時間照射した。その基板の波長450nmにおける吸光度を同様に測定した。下記式により波長450nmの吸光度の変化率を算出し、以下の基準で評価し、結果を表5に示した。
A:20%未満
B:20%以上
Claims (9)
- (a)着色剤、(b)アルカリ可溶性樹脂、(c)光重合開始剤、及び(d)エチレン性不飽和化合物を含有する感光性着色組成物であって、
前記(a)着色剤の含有割合が、感光性着色組成物の全固形分中に2~20質量%であり、
前記(a)着色剤が紫色顔料を含み、かつ、
前記(a)着色剤中の前記紫色顔料の含有割合が50質量%以上であることを特徴とする感光性着色組成物。 - 前記紫色顔料が、C.I.ピグメントバイオレット29及びC.I.ピグメントバイオレット23からなる群から選ばれる少なくとも1種を含む、請求項1に記載の感光性着色組成物。
- 前記(a)着色剤が、さらに橙色顔料を含む、請求項1又は2に記載の感光性着色組成物。
- 前記(d)エチレン性不飽和化合物100質量部に対する前記(b)アルカリ可溶性樹脂の含有割合が150質量部以下である、請求項1~3のいずれか1項に記載の感光性着色組成物。
- 前記(c)光重合開始剤が、ヘキサアリールビイミダゾール化合物を含有する、請求項1~4のいずれか1項に記載の感光性着色組成物。
- 着色スペーサー形成用である、請求項1~5のいずれか1項に記載の感光性着色組成物。
- 請求項1~6のいずれか1項に記載の感光性着色組成物を硬化して得られる硬化物。
- 請求項7に記載の硬化物から構成される着色スペーサー。
- 請求項8に記載の着色スペーサーを備える画像表示装置。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020217008178A KR102729933B1 (ko) | 2018-12-18 | 2019-12-12 | 감광성 착색 조성물, 경화물, 착색 스페이서, 및 화상 표시 장치 |
| CN202410620328.7A CN118444528A (zh) | 2018-12-18 | 2019-12-12 | 感光性着色树脂组合物、固化物、着色间隔物及图像显示装置 |
| JP2020561357A JP7375773B2 (ja) | 2018-12-18 | 2019-12-12 | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 |
| CN201980080987.3A CN113168094B (zh) | 2018-12-18 | 2019-12-12 | 感光性着色树脂组合物、固化物、着色间隔物及图像显示装置 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-236121 | 2018-12-18 | ||
| JP2018236121 | 2018-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020129807A1 true WO2020129807A1 (ja) | 2020-06-25 |
Family
ID=71100446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2019/048708 Ceased WO2020129807A1 (ja) | 2018-12-18 | 2019-12-12 | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP7375773B2 (ja) |
| KR (1) | KR102729933B1 (ja) |
| CN (2) | CN113168094B (ja) |
| TW (1) | TWI829830B (ja) |
| WO (1) | WO2020129807A1 (ja) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294935A (ja) * | 2002-01-29 | 2003-10-15 | Toyo Ink Mfg Co Ltd | カラーフィルタ用着色組成物およびカラーフィルタ |
| JP2011215186A (ja) * | 2010-03-31 | 2011-10-27 | Dainippon Printing Co Ltd | カラーフィルタ用紫色顔料分散液、カラーフィルタ用青色感光性樹脂組成物及びその製造方法、カラーフィルタ、及び液晶表示装置 |
| WO2015046332A1 (ja) * | 2013-09-25 | 2015-04-02 | 東京応化工業株式会社 | 感放射線性組成物及びパターン製造方法 |
| JP2015143797A (ja) * | 2014-01-31 | 2015-08-06 | 東洋インキScホールディングス株式会社 | 有機el表示装置用着色組成物、カラーフィルタ、および有機el表示装置 |
| WO2017056831A1 (ja) * | 2015-09-29 | 2017-04-06 | 富士フイルム株式会社 | 感光性組成物、硬化膜、赤外線カットフィルタ、赤外線透過フィルタ、硬化膜の製造方法、固体撮像素子、画像表示装置、固体撮像素子の製造方法および赤外線センサの製造方法 |
| JP2018009132A (ja) * | 2016-07-15 | 2018-01-18 | Jsr株式会社 | 着色組成物、着色硬化膜及びその形成方法、並びに表示素子 |
| JP2018025681A (ja) * | 2016-08-10 | 2018-02-15 | Jsr株式会社 | カラーフィルタ及び表示素子 |
| WO2018070477A1 (ja) * | 2016-10-14 | 2018-04-19 | 三菱ケミカル株式会社 | 感光性着色組成物、硬化物、着色スペーサー、画像表示装置 |
| WO2018116988A1 (ja) * | 2016-12-22 | 2018-06-28 | 東レ株式会社 | 有機el表示装置 |
| JP2018183878A (ja) * | 2015-09-24 | 2018-11-22 | 日立化成株式会社 | 積層体及びその製造方法、フィルムセット、並びに、感光性導電フィルム |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08234212A (ja) | 1995-02-28 | 1996-09-13 | Casio Comput Co Ltd | 液晶表示素子 |
| JP3912405B2 (ja) | 2003-11-11 | 2007-05-09 | 三菱化学株式会社 | 硬化性組成物、硬化物、カラーフィルタ及び液晶表示装置 |
| WO2013115268A1 (ja) | 2012-01-31 | 2013-08-08 | 三菱化学株式会社 | 着色感光性組成物、ブラックフォトスペーサー、及びカラーフィルター |
| JP2015038607A (ja) | 2013-07-16 | 2015-02-26 | 三菱化学株式会社 | 感光性組成物、硬化物、スペーサー及び画像表示装置 |
-
2019
- 2019-12-12 CN CN201980080987.3A patent/CN113168094B/zh active Active
- 2019-12-12 CN CN202410620328.7A patent/CN118444528A/zh active Pending
- 2019-12-12 JP JP2020561357A patent/JP7375773B2/ja active Active
- 2019-12-12 KR KR1020217008178A patent/KR102729933B1/ko active Active
- 2019-12-12 WO PCT/JP2019/048708 patent/WO2020129807A1/ja not_active Ceased
- 2019-12-16 TW TW108145974A patent/TWI829830B/zh active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003294935A (ja) * | 2002-01-29 | 2003-10-15 | Toyo Ink Mfg Co Ltd | カラーフィルタ用着色組成物およびカラーフィルタ |
| JP2011215186A (ja) * | 2010-03-31 | 2011-10-27 | Dainippon Printing Co Ltd | カラーフィルタ用紫色顔料分散液、カラーフィルタ用青色感光性樹脂組成物及びその製造方法、カラーフィルタ、及び液晶表示装置 |
| WO2015046332A1 (ja) * | 2013-09-25 | 2015-04-02 | 東京応化工業株式会社 | 感放射線性組成物及びパターン製造方法 |
| JP2015143797A (ja) * | 2014-01-31 | 2015-08-06 | 東洋インキScホールディングス株式会社 | 有機el表示装置用着色組成物、カラーフィルタ、および有機el表示装置 |
| JP2018183878A (ja) * | 2015-09-24 | 2018-11-22 | 日立化成株式会社 | 積層体及びその製造方法、フィルムセット、並びに、感光性導電フィルム |
| WO2017056831A1 (ja) * | 2015-09-29 | 2017-04-06 | 富士フイルム株式会社 | 感光性組成物、硬化膜、赤外線カットフィルタ、赤外線透過フィルタ、硬化膜の製造方法、固体撮像素子、画像表示装置、固体撮像素子の製造方法および赤外線センサの製造方法 |
| JP2018009132A (ja) * | 2016-07-15 | 2018-01-18 | Jsr株式会社 | 着色組成物、着色硬化膜及びその形成方法、並びに表示素子 |
| JP2018025681A (ja) * | 2016-08-10 | 2018-02-15 | Jsr株式会社 | カラーフィルタ及び表示素子 |
| WO2018070477A1 (ja) * | 2016-10-14 | 2018-04-19 | 三菱ケミカル株式会社 | 感光性着色組成物、硬化物、着色スペーサー、画像表示装置 |
| WO2018116988A1 (ja) * | 2016-12-22 | 2018-06-28 | 東レ株式会社 | 有機el表示装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI829830B (zh) | 2024-01-21 |
| CN113168094B (zh) | 2024-06-11 |
| CN118444528A (zh) | 2024-08-06 |
| CN113168094A (zh) | 2021-07-23 |
| TW202035467A (zh) | 2020-10-01 |
| KR20210105876A (ko) | 2021-08-27 |
| KR102729933B1 (ko) | 2024-11-13 |
| JP7375773B2 (ja) | 2023-11-08 |
| JPWO2020129807A1 (ja) | 2021-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7268700B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、画像表示装置 | |
| KR102540423B1 (ko) | 감광성 착색 조성물, 경화물, 착색 스페이서, 화상 표시 장치 | |
| JP7184518B2 (ja) | 着色スペーサー形成用感光性着色組成物、硬化物、着色スペーサー、画像表示装置 | |
| JP6380723B1 (ja) | 感光性着色組成物、硬化物、着色スペーサー、画像表示装置 | |
| JP7031598B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、画像表示装置 | |
| JP6543968B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 | |
| JP6528475B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 | |
| JP2016177190A (ja) | 着色スペーサー形成用感光性着色組成物、硬化物、着色スペーサー、画像表示装置 | |
| JP7230559B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 | |
| JP7183593B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 | |
| JP7006358B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 | |
| JP7375773B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 | |
| JP7302262B2 (ja) | 感光性着色樹脂組成物、硬化物、及び画像表示装置 | |
| JP7167851B2 (ja) | 感光性樹脂組成物、硬化物、スペーサー、及び画像表示装置 | |
| JP7351221B2 (ja) | 感光性着色組成物、硬化物、着色スペーサー、及び画像表示装置 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19899426 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 2020561357 Country of ref document: JP Kind code of ref document: A |
|
| ENP | Entry into the national phase |
Ref document number: 20217008178 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 19899426 Country of ref document: EP Kind code of ref document: A1 |






















































