JP2010170830A - Composition for bank insulating layer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a material for bank insulating layer wherein, when used for forming a bank insulating layer, ink-repellent characteristics can be selectively given to the surface of the bank insulating layer, and to provide a method of manufacturing the bank insulating layer. <P>SOLUTION: A composition for bank insulating layer contains (A) a high polymer compound containing at least a kind of repeating unit selected from a group comprising a repeating unit represented by general formula (1) and a repeating unit represented by general formula (2), (B) a curing agent, and (C) an organic solvent. In the general formula (1), R<SB>1</SB>is a hydrogen atom or a methyl group, R<SB>2</SB>is the hydrogen atom or a univalent organic group whose carbon number is 1-20, Rf is a fluorine atom or a univalent organic group containing the fluorine atom whose carbon number is 1-20, Raa is a bivalent organic group whose carbon number is 1-20, the hydrogen atom in the bivalent organic group may be substituted with the fluorine atom, l is an integral number of 0-20 and m is an integral number of 1-5. In the general formula (2), R<SB>3</SB>represents the hydrogen atom or the methyl group, and Rf' represents a univalent organic group containing the fluorine atom whose carbon number is 1-20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bank insulating layer composition and a method for manufacturing a bank insulating layer.

  An image display panel used as a display usually has a configuration in which a large number of unit pixels including light emitting elements and transistor elements are arranged. In such an image display panel, the light emission of the light emitting element is controlled by the transistor element in each pixel, thereby displaying an image.

  Conventionally, in an image display panel, a thin film transistor (TFT) using an inorganic semiconductor thin film made of a-Si (amorphous silicon) or p-Si (polycrystalline silicon) has been often used as a transistor element. However, manufacturing of TFTs using an inorganic semiconductor thin film usually requires an apparatus equipped with large vacuum processing equipment and high-temperature processing equipment, so that the manufacturing cost tends to increase. In particular, in recent years, the increase in manufacturing cost has been remarkable due to the progress of the enlargement of displays.

  Therefore, in recent years, it has been studied to apply a thin film transistor (organic thin film transistor) using an organic semiconductor thin film instead of an inorganic semiconductor thin film to an image display panel. Since an organic semiconductor thin film can form an organic semiconductor thin film by a relatively low temperature process, the manufacturing process can be simplified and the manufacturing cost can be reduced. In addition, since a low-temperature process can be applied to a resin substrate that is relatively weak against heat, the overall weight of the image display panel can be reduced. Furthermore, if a resin substrate having flexibility is used, a flexible panel can be obtained. The organic semiconductor thin film can also be manufactured by wet coating such as printing or coating under atmospheric pressure. In this case, an image display panel can be manufactured with extremely high productivity and low cost.

  The image display panel as described above is generally manufactured by forming a light emitting element after forming a transistor element. In such a manufacturing method, in each pixel, an insulating layer called a bank is often formed on the outer periphery of the light emitting element formation region. This bank is provided to prevent a short circuit between electrodes of the light emitting element and to partition the light emitting cells. When an organic electroluminescence element including a light emitting layer made of a polymer material (hereinafter sometimes abbreviated as “organic EL element”) is used as the light emitting element, the light emitting layer made of the polymer material is formed by a wet coating method. In doing so, the bank also functions as a partition that keeps the solution containing the polymer material (hereinafter sometimes referred to as “ink”) within a predetermined region.

  In order to keep the ink in a predetermined region, the surface of the bank insulating layer is required to exhibit ink repellency. For example, Patent Document 1 describes a fluorine-based silane coupling agent. If surface treatment is performed with such a silane coupling agent, it is considered that ink repellency is imparted to the surface of the bank insulating layer.

  However, the above-described method for imparting ink repellency by treating the surface of the bank insulating layer with a fluorine-based silane coupling agent is an electrode that is not covered with the bank insulating layer in an element having the bank insulating layer on the electrode. Similarly, the surface is also ink repellant, and there is a problem that an organic film containing a polymer material cannot be formed in a predetermined region. Therefore, there is a demand for means for selectively imparting ink repellency to the surface of the bank insulating layer.

JP 2007-246417 A

  Therefore, the present invention has been made in view of such circumstances, and when used for forming a bank insulating layer, a material for a bank insulating layer capable of selectively imparting ink repellency to the surface of the bank insulating layer, and An object of the present invention is to provide a method for manufacturing a bank insulating layer.

  In view of the above, as a result of various studies, a bank insulating layer is formed on a substrate using a specific bank insulating layer composition, and the surface of the substrate is surface-treated with an ionic liquid. The inventors have found that on the substrate having an insulating layer, ink repellency can be selectively imparted to the surface of the bank insulating layer, resulting in the present invention.

  That is, the present invention provides (A) a polymer compound containing at least one repeating unit selected from the group consisting of a repeating unit represented by the general formula (1) and a repeating unit represented by the general formula (2), A bank insulating layer composition containing (B) a curing agent and (C) an organic solvent is provided.

(In the formula, R ₁ represents a hydrogen atom or a methyl group. R ₂ represents a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms. Rf represents a fluorine atom or a carbon atom having 1 fluorine atom.) Represents a monovalent organic group of ~ 20. Raa represents a divalent organic group having 1 to 20 carbon atoms, and a hydrogen atom in the divalent organic group may be substituted with a fluorine atom. l represents an integer of 0 to 20, and m represents an integer of 1 to 5. When there are a plurality of R _{2 s} , they may be the same or different. (It may be the same or different. When there are a plurality of Raa, they may be the same or different.)

(In the formula, R _3, .Rf 'is represents a hydrogen atom or a methyl group, a monovalent organic group having 1 to 20 carbon atoms and having a fluorine atom.)

  The present invention also includes a step of forming an organic insulating layer on the substrate, an electrode provided on the substrate, or another layer provided on the substrate using the bank insulating layer composition, and the organic insulation Provided is a method for producing a bank insulating layer including a step of surface-treating a surface of a layer with an ionic liquid.

  In one certain form, before performing surface treatment with an ionic liquid, it further includes the process of carrying out UV ozone treatment to at least one part of the said substrate surface.

  In one certain form, the anion which the said ionic liquid has is an anion containing a fluorine atom.

  In one certain form, the cation which the ionic liquid has is at least one cation selected from the group consisting of an indazolium cation, a pyrrolidinium cation and a piperidinium cation.

  Moreover, this invention provides the member for a display containing the bank insulating layer manufactured using the said manufacturing method.

  Furthermore, the present invention provides a display comprising the display member.

  The composition for a bank insulating layer of the present invention contains fluorine atoms and is excellent in ionic liquid adsorption. Therefore, by subjecting the surface of the bank insulating layer to surface treatment with an ionic liquid, ink repellency can be selectively imparted to the surface of the bank insulating layer.

Next, the present invention will be described in more detail.
In the present specification, the “polymer compound” refers to a compound having a structure in which a plurality of the same structural units are repeated in the molecule, and includes a so-called dimer. On the other hand, the “low molecular compound” means a compound that does not have the same structural unit repeatedly in the molecule.

Bank Insulating Layer Composition The bank insulating layer composition of the present invention is at least selected from the group consisting of (A) a repeating unit represented by the general formula (1) and a repeating unit represented by the general formula (2). It is a resin composition containing a polymer compound containing one type of repeating unit, (B) a curing agent, and (C) an organic solvent.

Polymer compound (A)
In the polymer compound used in the present invention, the repeating unit represented by the general formula (1) or (2) has a side chain containing a fluorine atom. This is because the presence of fluorine atoms in the resin structure improves the adsorptivity of the ionic liquid. The fluorine atom is preferably present in the side chain portion of the repeating unit as a substituent of an organic group such as a phenyl group.

  The amount of fluorine contained in the polymer compound (A) is 1 to 60% by mass, preferably 5 to 50% by mass, more preferably 10 to 40% by mass with respect to the mass of the polymer compound. If the fluorine content is less than 1% by mass, the adsorptivity of the ionic liquid may be insufficient, and if it exceeds 60% by mass, the bank insulating layer may not be formed on the substrate.

In the general formulas (1) to (2), R ₁ and R ₃ are the same or different and represent a hydrogen atom or a methyl group, and R ₂ is a hydrogen atom or a monovalent monovalent carbon atom having 1 to 20 carbon atoms. Represents an organic group, Rf represents a fluorine atom or a monovalent organic group having 1 to 20 carbon atoms having a fluorine atom, and Rf ′ represents a monovalent organic group having 1 to 20 carbon atoms having a fluorine atom. , Raa represents a divalent organic group having 1 to 20 carbon atoms. A hydrogen atom in the divalent organic group may be substituted with a fluorine atom. l represents an integer of 0 to 20, and m represents an integer of 1 to 5. When there are a plurality of R _{2 s} , they may be the same or different. When there are a plurality of Rf, they may be the same or different. When there are a plurality of Raa, they may be the same or different.

In one certain form, R < ₁ > and R < ₂ > are hydrogen atoms, Rf is a fluoroalkyl group, for example, a trifluoromethyl group, l is 0, and m is 1.

The monovalent organic group having 1 to 20 carbon atoms may be linear, branched or cyclic, and may be saturated or unsaturated.
Examples of the monovalent organic group having 1 to 20 carbon atoms include a linear hydrocarbon group having 1 to 20 carbon atoms, a branched hydrocarbon group having 3 to 20 carbon atoms, and a cyclic hydrocarbon having 3 to 20 carbon atoms. Group, an aromatic hydrocarbon group having 6 to 20 carbon atoms, preferably a linear hydrocarbon group having 1 to 6 carbon atoms, a branched hydrocarbon group having 3 to 6 carbon atoms, or 3 to 6 carbon atoms. And an aromatic hydrocarbon group having 6 to 20 carbon atoms.
The linear hydrocarbon group having 1 to 20 carbon atoms, the branched hydrocarbon group having 3 to 20 carbon atoms, and the cyclic hydrocarbon group having 3 to 20 carbon atoms represented by Rf or Rf ′ are included in these groups. The hydrogen atom may be substituted with a fluorine atom.
In the aromatic hydrocarbon group having 6 to 20 carbon atoms represented by Rf or Rf ′, a hydrogen atom in the group may be substituted with an alkyl group, a halogen atom or the like. In the aromatic hydrocarbon group having 6 to 20 carbon atoms represented by R ₂ , a hydrogen atom in the group may be substituted with an alkyl group, a chlorine atom, a bromine atom, an iodine atom or the like.

  Specific examples of the monovalent organic group having 1 to 20 carbon atoms include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, isopropyl group, isobutyl group, tertiary butyl group, cyclopropyl group, Cyclobutyl group, cyclopentyl group, cyclohexyl group, cyclopentynyl group, cyclohexylinyl group, phenyl group, naphthyl group, anthryl group, tolyl group, xylyl group, dimethylphenyl group, trimethylphenyl group, ethylphenyl group, diethylphenyl group, triethyl Phenyl group, propylphenyl group, butylphenyl group, methylnaphthyl group, dimethylnaphthyl group, trimethylnaphthyl group, vinylnaphthyl group, ethenylnaphthyl group, methylanthryl group, ethylanthryl group, chlorophenyl group, bromophenyl group, etc. .

  Specific examples of the monovalent organic group having 1 to 20 carbon atoms substituted with a fluorine atom include trifluoromethyl group, 2,2,2, -trifluoroethyl group, 2,2,3,3,3, -A pentafluoropentyl group etc. are mentioned.

  The polymer compound used in the present invention polymerizes a polymerizable monomer corresponding to the general formula (1) and / or a polymerizable monomer corresponding to the general formula (2) using a photopolymerization initiator or a thermal polymerization initiator. Can be manufactured.

  Further, the polymer compound used in the present invention comprises a polymerizable monomer corresponding to the general formula (1) and / or a polymerizable monomer corresponding to the general formula (2) and another polymerizable monomer as a photopolymerization initiator or It can be produced by polymerization using a thermal polymerization initiator.

  The polymer compound used in the present invention includes a polymerizable monomer corresponding to the general formula (1) and / or a polymerizable monomer corresponding to the general formula (2) and a polymerizable monomer containing a crosslinkable group in the molecule. Can be polymerized using a photopolymerization initiator or a thermal polymerization initiator.

  The polymer compound used in the present invention includes a polymerizable monomer corresponding to the general formula (1) and / or a polymerizable monomer corresponding to the general formula (2) and a polymerizable monomer containing active hydrogen in the molecule. Can be prepared by reacting with a compound having a crosslinkable group and having a functional group capable of reacting with active hydrogen after being copolymerized using a photopolymerization initiator or a thermal polymerization initiator. . A plurality of polymerizable monomers corresponding to the general formula (1) or polymerizable monomers corresponding to the general formula (2) may be used.

  As described above, it is preferable that the polymer compound has a crosslinkable group because the bank insulating layer can have a cross-linked structure and electrical characteristics as the insulating layer are improved. In particular, it is more preferable that the crosslinkable group is an ethylenically unsaturated group, since crosslinking is performed by heating at a relatively low temperature, and thus adverse effects on the substrate due to heat during crosslinking can be reduced.

  Examples of the polymerizable monomer corresponding to the general formula (1) include 2-fluorostyrene, 3-fluorostyrene, 4-fluorostyrene, 2,3,4,5,6-pentafluorostyrene, 2-trifluoromethylstyrene, 3-trifluoromethyl styrene, 4-trifluoromethyl styrene, etc. are mentioned.

  Examples of the polymerizable monomer corresponding to the general formula (2) include 2,2,2-trifluoroethyl acrylate, 2,2,3,3,3-pentafluoropropyl acrylate, 2- (perfluorobutyl) ethyl acrylate, 3-perfluorobutyl-2-hydroxypropyl acrylate, 2- (perfluorohexyl) ethyl acrylate, 3-perfluorohexyl-2-hydroxypropyl acrylate, 2- (perfluorooctyl) ethyl acrylate, 3-perfluorooctyl- 2-hydroxypropyl acrylate, 2- (perfluorodecyl) ethyl acrylate, 2- (perfluoro-3-methylbutyl) ethyl acrylate, 3- (perfluoro-3-methylbutyl) -2-hydroxypropyl acrylate, 2- (perful (Ro-5-methylhexyl) ethyl acrylate, 2- (perfluoro-3-methylbutyl) -2-hydroxypropyl acrylate, 3- (perfluoro-5-methylhexyl) -2-hydroxypropyl acrylate, 2- (perfluoro) -7-methyloctyl) ethyl acrylate, 3- (perfluoro-7-methyloctyl) -2-hydroxypropyl acrylate, 1H, 1H, 3H-tetrafluoropropyl acrylate, 1H, 1H, 5H-octafluoropentyl acrylate, 1H , 1H, 7H-dodecafluoroheptyl acrylate, 1H, 1H, 9H-hexadecafluorononyl acrylate, 1H-1- (trifluoromethyl) trifluoroethyl acrylate, 1H, 1H, 3H-hexafluorobutyl acrylate 2,2,2-trifluoroethyl methacrylate, 2,2,3,3,3-pentafluoropropyl methacrylate, 2- (perfluorobutyl) ethyl methacrylate, 3-perfluorobutyl-2-hydroxy Propyl methacrylate, 2- (perfluorohexyl) ethyl methacrylate, 3-perfluorohexyl-2-hydroxypropyl methacrylate, 2- (perfluorooctyl) ethyl methacrylate, 3-perfluorooctyl-2-hydroxypropyl methacrylate Acrylate, 2- (perfluorodecyl) ethyl methacrylate, 2- (perfluoro-3-methylbutyl) ethyl methacrylate, 3- (perfluoro-3-methylbutyl) -2-hydroxypropyl methacrylate, 2- (Perf (Luoro-5-methylhexyl) ethyl methacrylate, 2- (perfluoro-3-methylbutyl) -2-hydroxypropyl methacrylate, 3- (perfluoro-5-methylhexyl) -2-hydroxypropyl methacrylate, 2- (Perfluoro-7-methyloctyl) ethyl methacrylate, 3- (perfluoro-7-methyloctyl) -2-hydroxypropyl methacrylate, 1H, 1H, 3H-tetrafluoropropyl methacrylate, 1H, 1H, 5H- Octafluoropentyl methacrylate, 1H, 1H, 7H-dodecafluoroheptyl methacrylate, 1H, 1H, 9H-hexadecafluorononyl methacrylate, 1H-1- (trifluoromethyl) trifluoroethyl methacrylate, 1H IH, 3H-hexafluoro-butyl methacrylate, and the like.

  Other polymerizable monomers include, for example, acrylic acid esters and derivatives thereof, methacrylic acid esters and derivatives thereof, styrene and derivatives thereof, vinyl acetate and derivatives thereof, acrylonitrile and derivatives thereof, methacrylonitrile and derivatives thereof, organic carbon Vinyl esters of acids and derivatives thereof, allyl esters of organic carboxylic acids and derivatives thereof, dialkyl esters of fumaric acid and derivatives thereof, dialkyl esters of maleic acid and derivatives thereof, dialkyl esters of itaconic acid and derivatives thereof, N of organic carboxylic acids -Vinylamide derivatives, maleimides and derivatives thereof, terminal unsaturated hydrocarbons and derivatives thereof, and organic germanium derivatives.

  As the acrylic esters and derivatives thereof, monofunctional acrylates and polyfunctional acrylates can be used although there are restrictions on the amount used, for example, methyl acrylate, ethyl acrylate, acrylic acid- n-propyl, isopropyl acrylate, acrylate-n-butyl, isobutyl acrylate, acrylate-sec-butyl, hexyl acrylate, octyl acrylate, 2-ethylhexyl acrylate, decyl acrylate, isobornyl acrylate, acrylic Cyclohexyl acid, phenyl acrylate, benzyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 3-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 2-hydroxyphenyl acrylate ethyl, Tylene glycol diacrylate, propylene glycol diacrylate, 1,4-butanediol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, trimethylolpropane diacrylate, trimethylolpropane triacrylate, pentaerythritol pentaacrylate, N, N- Examples thereof include dimethylacrylamide, N, N-diethylacrylamide, and N-acryloylmorpholine.

  As the methacrylic acid esters and derivatives thereof, monofunctional methacrylates and polyfunctional methacrylates can be used although there are restrictions on the amount used, for example, methyl methacrylate, methacrylic acid Ethyl, methacrylate-n-propyl, isopropyl methacrylate, methacrylate-n-butyl, isobutyl methacrylate, methacrylate-sec-butyl, hexyl methacrylate, octyl methacrylate, methacrylate- 2-ethylhexyl, decyl methacrylate, isobornyl methacrylate, cyclohexyl methacrylate, phenyl methacrylate, benzyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, methacrylic acid -3-hydroxy group Pill, 2-hydroxybutyl methacrylate, 2-hydroxyphenylethyl methacrylate, ethylene glycol dimethacrylate, propylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, diethylene glycol dimethacrylate, triethylene Examples thereof include glycol dimethacrylate, trimethylolpropane dimethacrylate, trimethylolpropane trimethacrylate, pentaerythritol pentamethacrylate, N, N-dimethylmethacrylamide, N, N-diethylmethacrylamide and the like.

  Examples of styrene and derivatives thereof include styrene, 2,4-dimethyl-α-methylstyrene, o-methylstyrene, m-methylstyrene, p-methylstyrene, 2,4-dimethylstyrene, 2,5-dimethylstyrene, 2 , 6-dimethylstyrene, 3,4-dimethylstyrene, 3,5-dimethylstyrene, 2,4,6-trimethylstyrene, 2,4,5-trimethylstyrene, pentamethylstyrene, o-ethylstyrene, m-ethyl Styrene, p-ethylstyrene, o-chlorostyrene, m-chlorostyrene, p-chlorostyrene, o-bromostyrene, m-bromostyrene, p-bromostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxy Styrene, o-hydroxystyrene, m-hydroxystyrene, p-hydroxys Len, 2-vinylbiphenyl, 3-vinylbiphenyl, 4-vinylbiphenyl, 1-vinylnaphthalene, 2-vinylnaphthalene, 4-vinyl-p-terphenyl, 1-vinylanthracene, α-methylstyrene, o-isopropenyl Toluene, m-isopropenyltoluene, p-isopropenyltoluene, 2,4-dimethyl-α-methylstyrene, 2,3-dimethyl-α-methylstyrene, 3,5-dimethyl-α-methylstyrene, p-isopropyl -Α-methylstyrene, α-ethylstyrene, α-chlorostyrene, divinylbenzene, divinylbiphenyl, diisopropylbenzene, 4-aminostyrene, 4-trifluoromethylstyrene, 2,3,4,5,6-pentafluorostyrene Etc.

  Examples of acrylonitrile and its derivatives include acrylonitrile. Examples of methacrylonitrile and derivatives thereof include methacrylonitrile.

  Examples of vinyl esters of organic carboxylic acids and derivatives thereof include vinyl acetate, vinyl propionate, vinyl butyrate, vinyl benzoate, and divinyl adipate. When the vinyl ester of organic carboxylic acid is polymerized, there is an advantage that resistance to organic solvents tends to be high.

  Examples of allyl esters of organic carboxylic acids and derivatives thereof include allyl acetate, allyl benzoate, diallyl adipate, diallyl terephthalate, diallyl isophthalate, and diallyl phthalate.

  Dialkyl esters of fumaric acid and derivatives thereof include dimethyl fumarate, diethyl fumarate, diisopropyl fumarate, di-sec-butyl fumarate, diisobutyl fumarate, di-n-butyl fumarate, di-2-ethylhexyl fumarate And dibenzyl fumarate.

  Dialkyl esters of maleic acid and derivatives thereof include dimethyl maleate, diethyl maleate, diisopropyl maleate, di-sec-butyl maleate, diisobutyl maleate, di-n-butyl maleate, di-2-ethylhexyl maleate And dibenzyl maleate.

  Dialkyl esters of itaconic acid and its derivatives include dimethyl itaconate, diethyl itaconate, diisopropyl itaconate, di-sec-butyl itaconate, diisobutyl itaconate, di-n-butyl itaconate, di-2-ethylhexyl itaconate And dibenzyl itaconate.

  Examples of N-vinylamide derivatives of organic carboxylic acids include N-methyl-N-vinylacetamide.

  Examples of maleimide and derivatives thereof include N-phenylmaleimide and N-cyclohexylmaleimide.

  Examples of terminal unsaturated hydrocarbons and derivatives thereof include 1-butene, 1-pentene, 1-hexene, 1-octene, vinylcyclohexane, vinyl chloride, and allyl alcohol.

  Examples of the organic germanium derivative include allyltrimethylgermanium, allyltriethylgermanium, allyltributylgermanium, trimethylvinylgermanium, triethylvinylgermanium, and the like.

  The crosslinkable group is a functional group that undergoes a chemical reaction to cause molecular crosslinking, or a functional group that causes molecular crosslinking by reacting with a crosslinking agent.

Functional groups that themselves undergo a chemical reaction and undergo molecular crosslinking include functional groups having cationic ring-opening polymerizability, functional groups having unsaturated bonds, isocyanate groups blocked with blocking agents, or blocked with blocking agents. An isothiocyanate group is mentioned.
Examples of the functional group having cationic ring-opening polymerizability used in the present invention include a cyclic ether group and a cyclic ester group.

Examples of the cyclic ether group include an epoxy group and an oxetanyl group, and examples thereof include a glycidyl group, a 1,2-epoxycyclohexyl group, and an oxetanylethyl group.
Examples of the polymerizable monomer containing a cyclic ether group include polyethylene glycol glycidyl vinyl ether and polyethylene glycol oxetanyl ethyl vinyl ether.

Examples of the cyclic ester group include a lactonyl group, and examples thereof include a β-propiolactonyl group, a β-butyrolactonyl group, a δ-valerolactonyl group, and an ε-caprolactonyl group.
Examples of the polymerizable monomer containing a cyclic ester group include polyethylene glycol butyrolactonyl ethyl vinyl ether and polyethylene glycol dicaprolactonyl ethyl vinyl ether.

  Examples of the functional group having an unsaturated bond include a carbon-carbon double bond group, and examples thereof include a vinyl group, an allyl group, a methacryloyl group, an acryloyl group, and a styryl group.

  The isocyanate group blocked with the blocking agent or the blocked isothiocyanate group is a blocking agent and isocyanate group or isothiocyanate group having only one active hydrogen per molecule capable of reacting with the isocyanate group or isothiocyanate group. Can be made to react.

  The blocking agent is dissociated at a temperature of 170 ° C. or lower even after an isocyanate group or an isothiocyanate group reacts with an isocyanate group or an isothiocyanate group to form an isocyanate group blocked with a blocking agent or an isothiocyanate group blocked with a blocking agent. Those are preferred.

  Examples of the blocking agent include alcohol compounds, phenol compounds, active methylene compounds, mercaptan compounds, acid amide compounds, acid imide compounds, imidazole compounds, urea compounds, and oxime compounds. Examples include compounds, amine compounds, imine compounds, bisulfites, pyridine compounds, pyrazole compounds, and the like. You may use these individually or in mixture of 2 or more types. Preferably, an oxime type compound and a pyrazole type compound are mentioned.

  Specific examples of the blocking agent include methanol, ethanol, propanol, butanol, 2-ethylhexanol, methyl cellosolve, butyl cellosolve, methyl carbitol, benzyl alcohol, cyclohexanol and the like. Examples of phenolic compounds include phenol, cresol, ethylphenol, butylphenol, nonylphenol, dinonylphenol, styrenated phenol, hydroxybenzoic acid ester, and the like. Examples of the active methylene compound include dimethyl malonate, diethyl malonate, methyl acetoacetate, ethyl acetoacetate, and acetylacetone. Examples of the mercaptan compound include butyl mercaptan and dodecyl mercaptan. Examples of the acid amide compounds include acetanilide, acetic acid amide, ε-caprolactam, δ-valerolactam, γ-butyrolactam and the like. Examples of the acid imide compound include succinimide and maleic imide. Examples of the imidazole compound include imidazole and 2-methylimidazole. Examples of urea compounds include urea, thiourea, and ethylene urea. Examples of the amine compound include diphenylamine, aniline, carbazole and the like. Examples of the imine compound include ethyleneimine and polyethyleneimine. Examples of the bisulfite include sodium bisulfite. Examples of pyridine-based compounds include 2-hydroxypyridine and 2-hydroxyquinoline. Examples of oxime compounds include formal oxime, acetal oxime, acetoxime, methyl ethyl ketoxime, cyclohexanone oxime, and the like. Examples of the pyrazole compound include 3,5-dimethylpyrazole, 3,5-diethylpyrazole and the like.

  Examples of the isocyanate group blocked with a blocking agent include O- (methylideneamino) carboxyamino group, O- (1-ethylideneamino) carboxyamino group, O- (1-methylethylideneamino) carboxyamino group, O- [1-Methylpropylideneamino] carboxyamino group, (N-3,5-dimethylpyrazolylcarbonyl) amino group, (N-3-ethyl-5-methylpyrazolylcarbonyl) amino group, (N-3,5-diethyl) Pyrazolylcarbonyl) amino group, (N-3-propyl-5-methylpyrazolylcarbonyl) amino group, (N-3-ethyl-5-propylpyrazolylcarbonyl) amino group and the like.

  Examples of the isothiocyanate group blocked with a blocking agent include O- (methylideneamino) thiocarboxyamino group, O- (1-ethylideneamino) thiocarboxyamino group, and O- (1-methylethylideneamino) thiocarboxyamino group. Group, O- [1-methylpropylideneamino] thiocarboxyamino group, (N-3,5-dimethylpyrazolylthiocarbonyl) amino group, (N-3-ethyl-5-methylpyrazolylthiocarbonyl) amino group, N-3,5-diethylpyrazolylthiocarbonyl) amino group, (N-3-propyl-5-methylpyrazolylthiocarbonyl) amino group, (N-3-ethyl-5-propylpyrazolylthiocarbonyl) amino group, and the like. It is done.

  Examples of the polymerizable monomer containing an isocyanate group blocked with a blocking agent or an isothiocyanate group blocked with a blocking agent in the molecule include 2-acryloyloxyethyl isocyanate, 2-methacryloyloxyethyl isocyanate, 2- (2 '-Methacryloyloxyethyl) oxyethyl isocyanate, 2-acryloyloxyethyl isothiocyanate, 2-methacryloyloxyethyl isothiocyanate, 2- (2'-methacryloyloxyethyl) oxyethyl isothiocyanate, and the like.

Examples of polymerizable monomers having active hydrogen in the molecule include 4-aminostyrene, 4-allylaniline, 4-aminophenyl vinyl ether, 4- (N-phenylamino) phenylallyl ether, 4- (N-methylamino) phenyl. Allyl ether, 4-aminophenyl allyl ether, allylamine, 2-aminoethyl acrylate, 4-hydroxystyrene, 4-hydroxyallylbenzene, 4-hydroxyphenyl vinyl ether, 4-hydroxyphenyl allyl ether, 4-hydroxybutyl vinyl ether, vinyl alcohol -2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 3-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 4-hydroxyphenyl acrylate, acrylic 2-hydroxyphenylethyl 2-aminoethyl methacrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl methacrylate, methacrylate Examples include 4-hydroxyphenyl acrylate and 2-hydroxyphenyl ethyl methacrylate.

  Examples of the compound containing a crosslinkable group and having a functional group capable of reacting with active hydrogen include methacryloyl chloride, acryloyl chloride, 2-isocyanatoethyl acrylate, and 2-isocyanatoethyl methacrylate.

  Examples of the photopolymerization initiator include acetophenone, 2,2-dimethoxy-2-phenylacetophenone, 2,2-diethoxyacetophenone, 4-isopropyl-2-hydroxy-2-methylpropiophenone, 2-hydroxy- 2-methylpropiophenone, 4,4′-bis (diethylamino) benzophenone, benzophenone, methyl (o-benzoyl) benzoate, 1-phenyl-1,2-propanedione-2- (o-ethoxycarbonyl) oxime, 1 -Phenyl-1,2-propanedione-2- (o-benzoyl) oxime, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, benzoin octyl ether, benzyl, benzyldimethyl Examples include carbonyl compounds such as ketal, benzyl diethyl ketal, and diacetyl, anthraquinones such as methyl anthraquinone, chloroanthraquinone, chlorothioxanthone, 2-methylthioxanthone, and 2-isopropylthioxanthone, and sulfur compounds such as diphenyl disulfide and dithiocarbamate. .

  The thermal polymerization initiator may be any radical polymerization initiator, such as 2,2′-azobisisobutyronitrile, 2,2′-azobisisovaleronitrile, 2,2 ′. -Azobis (2,4-dimethylvaleronitrile), 4,4'-azobis (4-cyanovaleric acid), 1,1'-azobis (cyclohexanecarbonitrile), 2,2'-azobis (2-methylpropane) ), Azo compounds such as 2,2′-azobis (2-methylpropionamidine) dihydrochloride, ketone peroxides such as methyl ethyl ketone peroxide, methyl isobutyl ketone peroxide, cyclohexanone peroxide, acetylacetone peroxide, isobutyl peroxide Oxide, benzoyl peroxide, 2,4-dichlorobenzoyl peroxide, o-me Diacyl peroxides such as tilbenzoyl peroxide, lauroyl peroxide, p-chlorobenzoyl peroxide, 2,4,4-trimethylpentyl-2-hydroperoxide, diisopropylbenzene peroxide, cumene hydroperoxide, t-butyl Hydroperoxides such as peroxides, dialkyl peroxides such as dicumyl peroxide, t-butylcumyl peroxide, di-t-butyl peroxide, tris (t-butylperoxy) triazine, 1,1-di Peroxyketals such as t-butylperoxycyclohexane and 2,2-di (t-butylperoxy) butane, t-butylperoxypivalate, t-butylperoxy-2-ethylhexanoate, t -Butyl peroxyisobutyrate, di-t- Tilperoxyhexahydroterephthalate, di-t-butylperoxyazelate, t-butylperoxy-3,5,5-trimethylhexanoate, t-butylperoxyacetate, t-butylperoxybenzoate, di- Examples include alkyl peresters such as t-butylperoxytrimethyladipate, and percarbonates such as diisopropylperoxydicarbonate, di-sec-butylperoxydicarbonate, and t-butylperoxyisopropylcarbonate.

  The polymer compound used in the present invention preferably has a weight average molecular weight of 3000 to 1000000, and may be linear, branched or cyclic.

  Examples of the polymer compound used in the present invention include poly {pentafluorostyrene-co- [4-[(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-vinylpyridine-co -Pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-vinylpyridine-co-vinylbenzoate-co-pentafluorostyrene- Co- [4-[(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-vinylpyridine-co-vinylbenzoate-co-pentafluorostyrene-co-acrylonitrile-co- [4- [(2′-methacryloyloxyethyl) aminocarbonylamino] -styre ]}, Poly {4-vinylpyridine-co-pentafluorostyrene-co-methyl methacrylate-co- [4-[(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-vinyl Pyridine-co-pentafluorostyrene-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-vinylpyridine-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-vinylpyridine-co-vinylbenzoate-co-pentafluorostyrene-co- [4-[(2′-methacryloyl Oxyethyl) aminocarbonyloxy] -styrene]}, poly {4-vinylpyridine-co- Nylbenzoate-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-vinylpyridine-co-pentafluorostyrene-co -Methyl methacrylate-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {1-vinylimidazole-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyl Amino] -styrene]}, poly {1-vinylimidazole-co-pentafluorostyrene-co- [4-[(2'-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {1-vinylimidazole- Co-pentafluorostyrene-co-acrylonitrile-co- [4 [(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {1-vinylimidazole-co-vinylbenzoate-co-pentafluorostyrene-co- [4-[(2′-methacryloyloxyethyl) Aminocarbonylamino] -styrene]}, poly {1-vinylimidazole-co-vinylbenzoate-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonylamino]- Styrene]}, poly {1-vinylimidazole-co-pentafluorostyrene-co-methyl methacrylate-co- [4-[(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {1-vinyl Imidazole-co-pentafluorostyrene-co- [ -[(2'-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {1-vinylimidazole-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) Aminocarbonyloxy] -styrene]}, poly {1-vinylimidazole-co-vinylbenzoate-co-pentafluorostyrene-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, Poly {1-vinylimidazole-co-vinylbenzoate-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {1-vinyl Imidazole-co-pentafluorostyrene-come Methacrylate-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-dimethylaminostyrene-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyl Amino] -styrene]}, poly {4-dimethylaminostyrene-co-pentafluorostyrene-co- [4-[(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-dimethylamino Styrene-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-dimethylaminostyrene-co-vinylbenzoate-co- Pentafluorostyrene-co- [4-[(2'-methacryloyloxy Til) aminocarbonylamino] -styrene]}, poly {4-dimethylaminostyrene-co-vinylbenzoate-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyl Amino] -styrene]}, poly {4-dimethylaminostyrene-co-pentafluorostyrene-co-methyl methacrylate-co- [4-[(2′-methacryloyloxyethyl) aminocarbonylamino] -styrene]}, poly {4-dimethylaminostyrene-co-pentafluorostyrene-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-dimethylaminostyrene-co-pentafluorostyrene- Co-acrylonitrile-co- [4-[(2'-meta Liloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-dimethylaminostyrene-co-vinylbenzoate-co-pentafluorostyrene-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyloxy ] -Styrene]}, poly {4-dimethylaminostyrene-co-vinylbenzoate-co-pentafluorostyrene-co-acrylonitrile-co- [4-[(2'-methacryloyloxyethyl) aminocarbonyloxy] -styrene] }, Poly {4-dimethylaminostyrene-co-pentafluorostyrene-co-methyl methacrylate-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyloxy] -styrene]}, poly {4-vinylpyridine -Co-glycidyl methacrylate-co-2-to Fluoromethylstyrene}, poly {1-vinylimidazole-co-glycidylmethacrylate-co-2-trifluoromethylstyrene}, poly {1-methyl-2-vinylimidazole-co-glycidylmethacrylate-co-2-trifluoromethyl Styrene}, poly {4-dimethylaminostyrene-co-glycidyl methacrylate-co-2-trifluoromethylstyrene}, poly {4-vinylpyridine-co-[(1-ethyl-3-oxetanyl) methyl methacrylate] -co -2-trifluoromethylstyrene}, poly {1-vinylimidazole-co-[(3-ethyloxetane-3-yl) methyl methacrylate] -co-2-trifluoromethylstyrene}, poly {1-methyl-2 -Vinylimidazole-co-[(3-ethyloxetane-3 -Yl) methyl methacrylate] -co-2-trifluoromethylstyrene}, poly {4-dimethylaminostyrene-co-[(3-ethyloxetane-3-yl) methyl methacrylate] -co-2-trifluoromethylstyrene }, Poly {vinylbenzoate-co-2-trifluoromethylstyrene-co-4-trifluoromethylstyrene-co- [4-[(2′-methacryloyloxyethyl) aminocarbonyloxy] -styrene]} and the like It is done.

Curing agent (B)
The (B) curing agent used in the present invention is a compound that crosslinks the polymer compound and cures the resin composition by reacting the functional groups with each other when a plurality of functional groups are present in the polymer compound. That's fine. For example, when the functional group in the polymer compound is an ethylenically unsaturated group, a polymerization initiator is suitable as the curing agent, specifically, an organic azo compound, an organic peroxide, a photocationic polymerization initiator. And thermal cationic polymerization initiators.

  Examples of the organic azo compound include 2,2′-azobisisobutyronitrile, 2,2′-azobisisovaleronitrile, 2,2′-azobis (2,4-dimethylvaleronitrile), 4, 4′-azobis (4-cyanovaleric acid), 1,1′-azobis (cyclohexanecarbonitrile), 2,2′-azobis (2-methylpropane), 2,2′-azobis (2-methylpropionamidine) ) Dihydrochloride, azobisisobutyronitrile and the like.

  Examples of the organic peroxide include ketone peroxides such as methyl ethyl ketone peroxide, methyl isobutyl ketone peroxide, cyclohexanone peroxide, and acetylacetone peroxide, isobutyl peroxide, benzoyl peroxide, and 2,4-dichlorobenzoyl peroxide. Diacyl peroxides such as o-methylbenzoyl peroxide, lauroyl peroxide, p-chlorobenzoyl peroxide, 2,4,4-trimethylpentyl-2-hydroperoxide, diisopropylbenzene peroxide, cumene hydroperoxide, Hydroperoxides such as t-butyl peroxide, dicumyl peroxide, t-butylcumyl peroxide, di-t-butyl peroxide, tris (t-butylperoxy Dialkyl peroxides such as triazine, peroxyketals such as 1,1-di-t-butylperoxycyclohexane, 2,2-di (t-butylperoxy) butane, t-butylperoxypivalate, t -Butylperoxy-2-ethylhexanoate, t-butylperoxyisobutyrate, di-t-butylperoxyhexahydroterephthalate, di-t-butylperoxyazelate, t-butylperoxy-3, Alkyl peresters such as 5,5-trimethylhexanoate, t-butylperoxyacetate, t-butylperoxybenzoate, di-t-butylperoxytrimethyladipate, diisopropylperoxydicarbonate, di-sec-butyl Peroxydicarbonate, t-butyl peroxyiso B pills carbonate, percarbonates such as 1,1-dimethyl propyl peroxy isopropyl carbonate.

  Examples of the cationic photopolymerization initiator and the thermal cationic polymerization initiator include iodonium salts, sulfonium salts, phosphate salts, and antimonate salts. Specific examples include Rhodosyl 2074, Adekaoptoma-SP-150, Adekaoptoma-SP-152, Adekaoptoma-SP-170, Adekaoptoma-SP-172, and Adeka Opton CP series. In addition to the above compounds, compounds described in JP-A-9-118663 can also be used.

The organic azo compound and organic peroxide that can be used in the present invention preferably have a 10-hour half-life temperature of 30 ° C. to 200 ° C., more preferably a 10-hour half-life temperature of 40 ° C. to 150 ° C. More preferably, the 10-hour half-life temperature is 40 ° C to 100 ° C.
When the 10-hour half-life temperature is lower than 30 ° C, the storage stability is poor and gelation may occur. When the temperature is higher than 200 ° C, the organic semiconductor may be adversely affected during curing.

Organic solvent (C)
The organic solvent used in the present invention contains (A) at least one repeating unit selected from the group consisting of the repeating unit represented by the general formula (1) and the repeating unit represented by the general formula (2). There is no particular limitation as long as it is a good solvent for the polymer compound and the (B) curing agent, and examples thereof include butyl acetate, 2-heptanone, propylene glycol monomethyl ether acetate, cyclopentanone, and cyclohexanone.

  In the composition for a bank insulating layer of the present invention, a high content containing at least one repeating unit selected from the group consisting of the repeating unit represented by the general formula (1) and the repeating unit represented by the general formula (2). When the weight of the molecular compound and the weight of the curing agent are 100 parts by weight, the weight of the organic solvent is preferably 50 to 1000 parts by weight. Further, 100 parts by weight of the polymer compound containing at least one type of repeating unit selected from the group consisting of the repeating unit represented by the general formula (1) and the repeating unit represented by the general formula (2) The weight of the curing agent is preferably 0.1 to 10 parts by weight.

Other Components The composition for a bank insulating layer of the present invention can contain a crosslinking agent, a leveling agent, a surfactant and the like as necessary.

As a crosslinking agent, a low molecular compound containing two or more unsaturated double bonds in the molecule, a crosslinking agent for acrylic resin, a low molecular compound containing two or more epoxy groups in the molecule, and an oxetanyl group in the molecule. Examples thereof include a low molecular compound containing two or more, a low molecular compound containing two or more active hydrogens in the molecule, and a polymer compound containing two or more active hydrogens in the molecule.
Examples of the low molecular weight compound containing two or more unsaturated double bonds in the molecule include divinylbenzene and trimethylolpropane trimethacrylate.
Examples of the acrylic resin crosslinking agent include dicumyl peroxide and 4,4-di-tertiary butyl peroxy-n-butyl valerate.
Examples of the low molecular weight compound containing two or more epoxy groups in the molecule include bisphenol-A-diglycidyl ether and phenol novolac epoxy resin.
Examples of the low molecular weight compound containing two or more oxetanyl groups in the molecule include 1,4-bis {[(3-ethyloxetane-3-yl) methoxy] methyl} benzene, 3-ethyl-3-{[( 3-ethyloxetane-3-yl) methoxy] methyl} oxetane, phenol novolac oxetane resin and the like.
Examples of the low molecular weight compound containing two or more active hydrogens in the molecule include 1,2-dihydroxybenzene, 1,3-dihydroxybenzene, 1,4-dihydroxybenzene, 1,2-phenylenediamine, 1,3- Examples include phenylenediamine, 1,4-phenylenediamine, 1,2-dihydroxynaphthalene, 1,3-bis (3′-aminophenoxy) benzene, and the like.
Examples of the polymer compound containing two or more active hydrogens in the molecule include polyaniline, polyvinylphenol, polyaniline copolymer, polyvinylphenol copolymer and the like.

Method for Producing Bank Insulating Layer The bank insulating layer of the present invention comprises a step of forming an organic insulating layer using the bank insulating layer composition and a step of surface-treating the surface of the organic insulating layer with an ionic liquid. It can be manufactured by the method of having.

  The organic insulating layer is formed by applying the bank insulating layer composition on a substrate, on an electrode placed on the substrate, or on another layer placed on the substrate such as a gate insulating layer, in a desired pattern. What is necessary is just to harden. Examples of the coating method for the bank insulating layer include spin coating, casting, micro gravure coating, gravure coating, bar coating, roll coating, wire bar coating, dip coating, spray coating, and screen. Examples thereof include a printing method, a flexographic printing method, an offset printing method, an ink jet printing method, a nozzle coating method, and a capillary coating method.

  As a method for curing the organic insulating layer, a known hot plate, oven, far-infrared baking furnace, or the like can be used, and there is no particular limitation in the atmosphere or in an inert gas atmosphere, but preferably in an inert gas atmosphere. Is called. The curing temperature is preferably 50 ° C to 250 ° C, more preferably 60 ° C to 230 ° C, and still more preferably 80 ° C to 200 ° C. The curing time can be appropriately selected according to the curing temperature. When the curing temperature is lower than 50 ° C., curing may be insufficient, and when it is higher than 250 ° C., the polymer compound may be thermally decomposed.

  After forming the organic insulating layer, if necessary, at least a part of the substrate surface is subjected to UV ozone treatment. The substrate surface here means the entire surface of the substrate in a state where the organic insulating layer is formed. That is, the UV ozone treatment is generally performed on the exposed surface of the substrate, the exposed surface of the electrode, the exposed surface of another insulating layer, and the surface of the organic insulating layer. By performing the UV ozone treatment, organic substances present on the electrode are removed, and the performance of the element formed thereon is improved.

  The surface treatment of the organic insulating layer can be performed by rinsing the bank insulating layer after immersing the bank insulating layer in the ionic liquid or a solution containing the ionic liquid. Alternatively, the ionic liquid or a solution containing the ionic liquid is applied on the bank insulating layer with a spin coater or a die coater, and then the surface treatment can be performed by washing away the ionic liquid.

  The ionic liquid refers to a room temperature molten salt in which a cation and an anion are combined. The cation portion of the ionic liquid has an affinity for the bank insulating layer composition of the present invention. Therefore, when the ionic liquid is brought into contact with the substrate surface, the ionic liquid is selectively adsorbed on the surface of the organic insulating layer. And, the ionic liquid simply adhered to the surface other than the organic insulating layer on the substrate surface is removed by washing, whereas the ionic liquid adsorbed on the surface of the organic insulating layer is not removed by washing, As a result, ink repellency is selectively imparted to the surface of the organic insulating layer in the substrate surface. The organic insulating layer having the surface provided with ink repellency in this way is referred to as a bank insulating layer.

Examples of the cation portion of the ionic liquid include an imidazolium cation, a pyrrolidinium cation, and a piperidinium cation.
Examples of the imidazolium cation include 3-ethyl-1-methylimidazolium and 1-butyl-3-methylimidazolium.
Examples of the pyrrolidinium cation include N-methyl-N-propylpyrrolidinium and N-butyl-N-methylpyrrolidinium.
Examples of piperidinium-based cations include N-methyl-N-propylpiperidinium and N-butyl-N-methylpiperidinium.

  The anionic portion of the ionic liquid is preferably one containing fluorine, and examples thereof include tetrafluoroborate, bis (trifluoromethanesulfonyl) imide, hexafluorophosphate and the like.

  Examples of the ionic liquid include 3-butyl-1-methylimidazolium hexafluorophosphate, 3-butyl-1-methylimidazolium tetrafluoroborate, 3-butyl-1-methylimidazolium bis (trifluoromethanesulfonyl) imide, 1,3-diallylimidazolium hexafluorophosphate, 1,3-diallylimidazolium tetrafluoroborate, N-butyl-N-methylpyrrolidinium bis (trifluoromethanesulfonyl) imide, N-butyl-N-methylpiperidinium Examples thereof include bis (trifluoromethanesulfonyl) imide, N-butylpyridinium tetrafluoroborate, N-butylpyridinium bis (trifluoromethanesulfonyl) imide, and the like.

  The bank insulating layer obtained by the production method of the present invention has ink repellency. In the present invention, ink repellency means that the contact angle of ion-exchanged water is 50 to 120 °.

  The bank insulating layer produced using the composition for a bank insulating layer of the present invention can be used for a bank insulating layer included in an organic transistor element, a bank insulating layer included in an organic electroluminescence element, and the like.

  Using the bank insulating layer composition of the present invention, a display member having a bank insulating layer can be suitably produced. Using the display member having the bank insulating layer, a display including the display member can be suitably manufactured.

  EXAMPLES Hereinafter, although an Example demonstrates this invention, it cannot be overemphasized that this invention is not limited by an Example.

(Synthesis Example 1)
8.47 g of vinyl benzoate (manufactured by Aldrich), 6.15 g of 2-trifluoromethylstyrene (manufactured by Hydras Chemical), 6.15 g of 4-trifluoromethylstyrene (manufactured by Hydras Chemical), 4-aminostyrene (manufactured by Aldrich) 70 g, 0.22 g of 2,2′-azobis (isobutyronitrile), 52.93 g of 2-heptanone (manufactured by Wako Pure Chemical Industries, Ltd.) are put in a 125 ml pressure vessel (manufactured by Ace), bubbled with nitrogen, and then sealed. The mixture was polymerized in an oil bath at 60 ° C. for 48 hours to obtain a viscous 2-heptanone solution.
To the resulting viscous 2-heptanone solution, 2.21 g of 2-methacryloyloxyethyl isocyanate (produced by Showa Denko, Karenz MOI) was added and reacted at room temperature for 24 hours to obtain a 2-heptanone solution of polymer compound 1.

Example 1
In a 10 ml sample bottle, 3.00 g of a 2-heptanone solution of polymer compound 1 and 0.045 g of 1,1-dimethylpropylperoxyisopropyl carbonate (Kaya-Carbon AIC-75, manufactured by Kayaku Akzo Co., Ltd.) as a curing agent. The mixture was stirred and dissolved to prepare a uniform coating solution. The obtained coating solution was filtered using a membrane filter having a pore size of 0.2 μm to prepare a coating solution of polymer compound 1. The high molecular compound 1 has a repeating unit represented by Formula (A)-Formula (D).

  A coating solution of polymer compound 1 was spin-coated on a glass substrate and baked at 200 ° C. for 1 minute in a nitrogen atmosphere to obtain an organic insulating layer.

  In order to impart ink affinity to the substrate on which the organic insulating layer is formed, UV ozone treatment is performed for 2 minutes using a UV ozone dry stripper (manufactured by Samco, UV-1), and then ink repellency is imparted to the organic insulating layer. In order to achieve this, the substrate on which the organic insulating layer was formed was immersed for 30 seconds in a 10 wt% acetone solution of 1-butyl-3-methylimidazolium hexafluorophosphate (Toyo Gosei Co., Ltd.), which is an ionic liquid. After taking out, the bank insulating layer was manufactured by washing with acetone. The contact angle of ion-exchanged water of the obtained bank insulating layer was measured using a contact angle meter CA-A (manufactured by KYOWA KAIMENKAGAKU). The results are shown in Table 1.

(Comparative Example 1)
The contact angle of ion-exchanged water was measured in the same manner as in Example 1 on a glass substrate on which the coating solution of the polymer compound 1 was not spin-coated. The results are shown in Table 1.

(Comparative Example 2)
The contact angle of ion-exchanged water was measured in the same manner as in Comparative Example 1 except that acetone was used instead of the ionic liquid acetone solution.

(Comparative Example 3)
1.00 g of polyvinylphenol-co-polymethyl methacrylate (manufactured by Aldrich Co.), 0.089 g of hexamethoxymethylmelamine (manufactured by Sumitomo Chemical Co., Ltd.), 0.062 g of TAZ-108 (manufactured by Midori Chemical Co., Ltd.) which is a curing catalyst Then, 7.00 g of 2-heptanone was placed in a 10 ml sample bottle and dissolved by stirring to prepare a uniform coating solution.

  The obtained coating solution was filtered using a membrane filter having a pore size of 0.2 μm, spin-coated on a glass substrate, and baked at 220 ° C. for 30 minutes in the air to obtain an organic insulating layer. The contact angle of ion exchange water was measured for the obtained cured film in the same manner as in Example 1. The results are shown in Table 1.

[Table 1]

Claims (7)

(A) a polymer compound containing at least one repeating unit selected from the group consisting of the repeating unit represented by formula (1) and the repeating unit represented by formula (2), (B) a curing agent, And (C) A composition for a bank insulating layer containing an organic solvent.

(In the formula, R ₁ represents a hydrogen atom or a methyl group. R ₂ represents a hydrogen atom or a monovalent organic group having 1 to 20 carbon atoms. Rf represents a fluorine atom or a carbon atom having 1 fluorine atom.) Represents a monovalent organic group of ~ 20. Raa represents a divalent organic group having 1 to 20 carbon atoms, and a hydrogen atom in the divalent organic group may be substituted with a fluorine atom. l represents an integer of 0 to 20, and m represents an integer of 1 to 5. When there are a plurality of R _{2 s} , they may be the same or different. (It may be the same or different. When there are a plurality of Raa, they may be the same or different.)

A step of forming an organic insulating layer on the substrate, an electrode provided on the substrate, or another layer provided on the substrate using the composition for a bank insulating layer according to claim 1, and A method for producing a bank insulating layer comprising a step of surface-treating a surface with an ionic liquid.   The method for producing a bank insulating layer according to claim 2, further comprising a step of performing UV ozone treatment on at least a part of the substrate surface before performing the surface treatment with the ionic liquid.   The method for producing a bank insulating layer according to claim 2 or 3, wherein the anion contained in the ionic liquid is an anion containing a fluorine atom.   The method for producing a bank insulating layer according to any one of claims 2 to 4, wherein the cation of the ionic liquid is at least one cation selected from the group consisting of an indazolium cation, a pyrrolidinium cation, and a piperidinium cation.   The display member containing the bank insulating layer manufactured using the manufacturing method in any one of Claims 2-5.   A display comprising the display member according to claim 6.