JP2020511694A - Photosensitive resin composition, color filter manufactured using the same, and image display device - Google Patents

Abstract

The photosensitive resin composition according to the present invention includes an alkali-soluble resin; and scattering particles including a metal oxide having an average particle size of 30 to 500 nm; and the alkali-soluble resin is polymerized by including a compound represented by Chemical Formula 1. One or more selected from the group consisting of a first cardo type binder resin and a second cardo type binder resin polymerized containing the compound represented by the chemical formula 2. The photosensitive resin composition according to the present invention can impart excellent color reproduction characteristics and high light efficiency, and thus has an advantage that high quality image can be realized.
[Selection diagram] None

Description

  The present invention relates to a photosensitive resin composition containing specific scattering particles and an alkali-soluble resin, a color filter manufactured using the same, and an image display device.

  A color filter is a thin film type optical component that extracts three colors of red, green, and blue from white light and enables them in fine pixel units. The size of one pixel is several tens to several hundreds of micrometers. It is a degree. Such a color filter has a black matrix layer formed on a transparent substrate in a predetermined pattern to shield the boundary between pixels and a plurality of colors (usually, to form each pixel). It has a structure in which pixel portions in which three primary colors of red (R), green (G), and blue (B) are arranged in a predetermined order are sequentially stacked.

  Recently, a pigment dispersion method using a pigment-dispersed photosensitive resin has been applied as one of the methods for implementing a color filter. However, when the light emitted from a light source passes through the color filter, the There is a problem that part of the color filter is absorbed by the color filter to reduce the light efficiency, and the color reproduction is deteriorated due to the characteristics of the pigment contained in the color filter.

  In particular, as color filters are used in various fields including various image display devices, not only excellent pattern characteristics but also high color reproducibility and excellent performance such as high brightness and high contrast ratio are achieved. In order to solve such a problem, a method of manufacturing a color filter using a self-luminous photosensitive resin composition containing quantum dots has been proposed.

  Patent Document 1 (Korean Patent Publication No. 2013-0000506) relates to a display device and includes a plurality of wavelength conversion particles that convert a wavelength of light; and a plurality of colors that absorb light in a predetermined wavelength band. The contents relating to a display device including a color conversion unit including filter particles are disclosed.

  However, in the case of a color filter including a quantum dot, the efficiency of the quantum dot, in particular, the efficiency of the blue quantum dot is inferior, the performance of the color filter may be slightly deteriorated. However, there is a problem that the manufacturing cost increases.

  Therefore, under the present circumstances, there is a demand for the development of a photosensitive resin composition capable of preventing a decrease in the efficiency of blue pixels and reducing the manufacturing cost.

Korean Patent Publication No. 2013-0000506 (2013.01.03.)

  An object of the present invention is to provide a photosensitive resin composition capable of preventing a decrease in efficiency of blue pixels and reducing manufacturing cost.

  The present invention also provides a color filter and an image display device including a blue pixel layer manufactured by using the above-mentioned photosensitive resin composition. Specifically, the present invention intends to provide a color filter and an image display device which are excellent in image quality, viewing angle, durability, reliability and the like.

  The photosensitive resin composition according to the present invention for achieving the above object comprises an alkali-soluble resin; and scattering particles containing a metal oxide having an average particle size of 30 to 500 nm; Containing at least one selected from the group consisting of a first cardo type binder resin polymerized containing the compound represented and a second cardo type binder resin polymerized containing the compound represented by the following chemical formula 2. Characterize.

[Chemical formula 1]

[Chemical formula 2]

In chemical formula 1,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R3 is hydrogen or an alkyl group having 1 to 5 carbon atoms,
In formula 2,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R6 is hydrogen or an alkyl group having 1 to 5 carbon atoms.

  The present invention also provides a color filter manufactured from the above-mentioned photosensitive resin composition and an image display device including the same.

  The photosensitive resin composition of the present invention has an advantage that excellent color reproduction characteristics and light efficiency can be imparted.

  In addition, the color filter manufactured by the photosensitive resin composition of the present invention and the image display device including the same can secure high quality image quality, excellent viewing angle, high durability, reliability, and manufacturing cost. Has the advantage that it can be reduced.

  Hereinafter, the present invention will be described in more detail.

  In the present invention, when an arbitrary member is positioned “on” another member, this means not only when the arbitrary member is in contact with the other member but also between the two members. Including the case where exists.

  In the present invention, when an arbitrary portion is referred to as “comprising” a certain constituent, this does not exclude other constituents and can further include other constituents unless specifically stated to the contrary. Means

<Photosensitive resin composition>
One embodiment of the present invention includes an alkali-soluble resin; and scattering particles including a metal oxide having an average particle size of 30 to 500 nm; and the alkali-soluble resin is polymerized by including a compound represented by the following chemical formula 1. The present invention relates to a photosensitive resin composition containing at least one selected from the group consisting of a first cardo binder resin and a second cardo binder resin which is polymerized by including a compound represented by the following chemical formula 2.

[Chemical formula 1]

[Chemical formula 2]

In chemical formula 1,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R3 is hydrogen or an alkyl group having 1 to 5 carbon atoms,
In formula 2,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R6 is hydrogen or an alkyl group having 1 to 5 carbon atoms.

Alkali-Soluble Resin The photosensitive resin composition of the present invention comprises a first cardo type binder resin which is polymerized by including a compound represented by the following chemical formula 1 and a second resin which is polymerized by including a compound represented by the following chemical formula 2. It contains one or more selected from the group consisting of cardo type binder resins.

[Chemical formula 1]

[Chemical formula 2]

In chemical formula 1,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R3 is hydrogen or an alkyl group having 1 to 5 carbon atoms,
In formula 2,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R6 is hydrogen or an alkyl group having 1 to 5 carbon atoms.

  The alkali-soluble resin has reactivity and alkali solubility under the action of light or heat. Specifically, the alkali-soluble resin acts as a binder resin for the scattering particles and may be soluble in the alkaline developer used in the developing step for manufacturing the color filter.

  The alkali-soluble resin according to the present invention includes the first cardo type binder resin which is polymerized by containing the compound represented by the following chemical formula 1, thereby improving the adhesive force with the substrate and being excellent in the development adhesive force, There is an advantage that a fine pattern for high resolution can be realized.

[Chemical formula 1]

X is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group, R3 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, preferably X is a hydroxyl group, and R3 is a hydrogen atom. Alternatively, it is preferably a methyl group.

  The compound represented by Chemical Formula 1 may be synthesized by using the following Chemical Formula 5, and is further reacted with an acid anhydride or an acid dianhydride compound to form an alkali-soluble first cardo type binder resin. Can be obtained.

[Chemical formula 5]

  For example, the compound represented by the chemical formula 5 is mixed with epichlorohydrin and t-butylammonium bromide, heated and reacted with a solvent, and then an aqueous alkaline solution is added dropwise to precipitate and separate the epoxy compound. After the synthesis, the compound obtained by mixing and reacting the synthesized epoxy compound with t-butylammonium bromide, acrylic acid, a phenolic compound and a solvent and maleic anhydride, succinic anhydride, and anhydrous as acid anhydride compounds. The group consisting of itaconic acid, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methylendomethylenetetrahydrophthalic anhydride, chlorendic anhydride, methyltetrahydrophthalic anhydride, or pyromellitic dianhydride as an acid dianhydride, benzophenone Tetracarboxylic acid It can be produced by reacting with at least one selected from the group consisting of aromatic polyvalent carboxylic acid anhydrides such as anhydrides, pipenyl tetracarboxylic acid dianhydrides and biphenyl ether tetracarboxylic acid dianhydrides. , But not limited to these.

  In addition, the alkali-soluble binder resin according to the present invention contains the second cardo type binder resin polymerized by containing the compound of the following chemical formula 2 to improve the adhesive force with the substrate and has excellent development adhesiveness and high adhesion. To be able to embody a fine pattern for resolution.

[Chemical formula 2]

X is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group, R6 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, preferably X is a hydroxyl group, and R6 is a hydrogen atom. Alternatively, it is preferably a methyl group.

  The compound represented by Chemical Formula 2 may be synthesized by using the following Chemical Formula 6, and is reacted with an acid anhydride or acid dianhydride compound to form the second cardo type binder resin having alkali solubility. Obtainable.

[Chemical formula 6]

  For example, the compound represented by the chemical formula 6 is mixed with epichlorohydrin, t-butylammonium bromide and a solvent, heated and reacted together, and then an aqueous alkaline solution is added dropwise to precipitate and separate the epoxy compound. After synthesizing, a compound obtained by mixing and reacting the synthesized epoxy compound with t-butylammonium bromide, acrylic acid, a phenolic compound and a solvent and maleic anhydride, succinic anhydride as an acid anhydride compound, Itaconic anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methylendomethylenetetrahydrophthalic anhydride, chlorendic anhydride, methyltetrahydrophthalic anhydride, or pyromellitic dianhydride as an acid dianhydride, Benzophenone tetracarboxylic acid di It can be produced by reacting with at least one selected from the group consisting of an aromatic polyvalent carboxylic acid anhydride such as an aqueous product, biphenyltetracarboxylic dianhydride, and biphenylethertetracarboxylic dianhydride, It is not limited to these.

  In the above Chemical Formulas 5 and 6, the position of the hydroxyl group (—OH) is not particularly limited, and may be, for example, 2-position, 3-position and 4-position, preferably 4-position. (Positioning determines the carbon attached to the xanthene as the 1-position).

  As a result, the substitution position of R1 and R2 of Formula 1 or the substitution position of R4 and R5 of Formula 2 may be determined depending on the position of the hydroxyl group (—OH) of Formula 5 or 6.

  As a more specific example of the compound represented by the chemical formula 1, 9,9-bis (3-cinnamic diester) fluorene (9,9-bis (3-cinnamic diester) fluorene), 9,9-bis ( 3-Cinnamoyl, 4-hydroxyphenyl) fluorene (9,9-bis (3-cynamoyl, 4-hydroxyphenyl) fluorene), 9,9-bis (glycidyl methacrylate ether) fluorene (9,9-bis (glycidyl methyl ether ether) Fluorene), 9,9-bis (3,4-dihydroxyphenyl) fluorenedicinamic ester (9,9-bis (3,4-dihydroxyphenyl) fluorene dicinnamice 3,6-diglycidyl methacrylate ether spiro (fluorene-9,9-xanthene) (3,6-diglycidyl methacylate ether spiro (fluorene-9,9-xanthene)), 9,9-bis (3-allyl) , 4-hydroxyphenylfluorene) (9,9-bis (3-allyl, 4-hydroxyphenylfluorene), 9,9-bis (4-allyloxyphenyl) fluorene (9,9-bis (4-allyloxyphenyl) fluorene), At least one selected from the group consisting of 9,9-bis (3,4-methacrylic diester) fluorene (9,9-bis (3,4-methacrylic diester) fluorene) It may even, but not limited thereto.

  A more specific example of the compound represented by Chemical Formula 2 is 9,9-bis (3,4-methacrylic diester) xanthene, but the compound is not limited thereto.

  The acid value of the alkali-soluble binder resin may be 20 to 200 mgKOH / g, and preferably 30 to 150 mgKOH / g. When the acid value is within the above range, the solubility in the developing solution is improved, the non-exposed portion is easily dissolved, the sensitivity is increased, and as a result, the pattern of the exposed portion remains during development. It is preferable because it improves the film remaining ratio.

  In the present invention, the “acid value” is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of an acrylic polymer, and is usually titrated using an aqueous potassium hydroxide solution. Can be obtained by doing.

  Further, the polystyrene-converted weight average molecular weight (hereinafter simply referred to as “weight average molecular weight”) measured by gel permeation chromatography (GPC; tetrahydrofuran as an eluting solvent) is 2,000 to 200,000, preferably 3, 000-100,000 alkali-soluble resins are preferred. When the molecular weight is within the above range, the hardness of the coating film is improved, the residual film ratio is high, the solubility of the unexposed portion in the developing solution is excellent, and the resolution tends to be improved, which is preferable.

  The molecular weight distribution [weight average molecular weight (Mw) / number average molecular weight (Mn)] of the alkali-soluble resin is preferably 1.0 to 6.0, and more preferably 1.5 to 6.0. . When the molecular weight distribution [weight average molecular weight (Mw) / number average molecular weight (Mn)] satisfies the above range, the developability is excellent, which is preferable.

  In one embodiment of the present invention, the cardo binder resin is 1 to 50 parts by weight, preferably 5 to 40 parts by weight, and more preferably 5 to 30 parts by weight, based on 100 parts by weight of the entire photosensitive resin composition. Can be included in.

  When the cardo type binder resin is included in the above range, the solubility in the developing solution is sufficient, so that a development residue is less likely to be generated on the substrate in the non-pixel portion, and the film in the pixel portion in the exposed portion is reduced during development. Is less likely to occur, and there is an advantage that the non-pixel portion is likely to be missing, which is preferable.

  In another embodiment of the present invention, the alkali-soluble resin may further include a cardo type binder resin including at least one repeating unit of the following Chemical Formula 3 and Chemical Formula 4.

[Chemical formula 3]

[Chemical formula 4]

In the above Chemical Formulas 3 and 4,
R7 and R8 are each independently hydrogen, a hydroxy group, a thiol group, an amino group, a nitro group or a halogen atom,
Ar1 is each independently a C6 to C15 aryl group,
Y is an acid anhydride residue,
Z is an acid dianhydride residue,
A is O, S, N, Si or Se,
a and b are each independently an integer of 1 to 6,
m and n are each independently an integer of 0 to 30,
However, m and n are not 0 at the same time.

  The halogen atom is F, Cl, Br or I.

  The aryl group may be a C6 to C15 monocyclic aryl group or a polycyclic aryl group. Examples of the monocyclic aryl group include, but are not limited to, a phenyl group, a biphenyl group, a terphenyl group and a stilbenyl group. Examples of the polycyclic aryl group include, but are not limited to, a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, and fluorenyl group.

  Y in Chemical Formula 3 is a residue of an acid anhydride, and the acid anhydride into which the residue Y can be introduced is not particularly limited, and examples thereof include maleic anhydride, succinic anhydride, itaconic anhydride, and phthalic anhydride. , Tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methylendomethylenetetrahydrophthalic anhydride, chlorendic anhydride, methyltetrahydrophthalic anhydride and the like.

  Z in the chemical formula 4 is, as a residue of an acid dianhydride, an acid dianhydride compound into which the residue Z can be introduced is not particularly limited, and examples thereof include pyromellitic dianhydride, benzophenonetetracarboxylic dianhydride, and biphenyl. Examples thereof include tetracarboxylic acid dianhydride, biphenyl ether tetracarboxylic acid dianhydride, cyclohexyl acid dianhydride, and cyclobutyric acid dianhydride.

  When the cardo type binder resin according to the present invention is contained in the photosensitive resin composition, there is an advantage that the emission intensity, the diffusivity and the external light reflectance can be more excellent.

  When the alkali-soluble resin further comprises a cardo-based binder resin containing one or more repeating units selected from the group consisting of the chemical formulas 3 and 4, the cardo-based binder resin may be added to 100 parts by weight of the alkali-soluble resin. It may be contained in an amount of 1 to 50 parts by weight, preferably 5 to 40 parts by weight, more preferably 5 to 30 parts by weight.

  When the cardo type binder resin that can be further included is included within the above range, it is advantageous because the emission intensity, the diffusivity, and the external light reflectance are more excellent.

  The cardo type binder resin including at least one repeating unit of the chemical formula 3 and the chemical formula 4 can be manufactured, for example, by the following method.

  After reacting one of the compounds represented by the following chemical formulas 7 to 11 with an epoxy compound such as epichlorohydrin under a base catalyst or an acid catalyst, thiophenol, 1-thionaphthalene, and 2-thio. Compounds represented by the following chemical formulas 12 to 16 can be obtained by reacting with a compound such as naphthalene to synthesize.

  Thereafter, a compound represented by the following Chemical Formulas 12 to 16 and a carboxylic acid dianhydride are polymerized to obtain a cardo type binder resin containing at least one repeating unit of the Chemical Formulas 3 and 4. .

[Chemical formula 7]

[Chemical formula 8]

[Chemical formula 9]

[Chemical formula 10]

[Chemical formula 11]

  In the above Chemical Formulas 7 to 11, A, R7 and R8 are as defined in Chemical Formulas 3 and 4.

[Chemical formula 12]

[Chemical Formula 13]

[Chemical Formula 14]

[Chemical Formula 15]

[Chemical Formula 16]

In the chemical formulas 12 to 16, c is an integer of 1 to 6,
A, Ar1, R7 and R8 are as defined in Chemical Formulas 3 and 4.

  Specific examples of the carboxylic dianhydride include pyromellitic dianhydride, 3,3 ′, 4,4′-biphenyltetracarboxylic dianhydride, 2,3,3 ′, 4′-biphenyl. Tetracarboxylic acid dianhydride, 2,2 ', 3,3'-biphenyltetracarboxylic acid dianhydride, 3,3', 4,4'-benzophenone tetracarboxylic acid dianhydride, 2,2 ', 3 3'-benzophenone tetracarboxylic acid dianhydride, 2,2-bis (3,4-dicarboxyphenyl) propane dianhydride, 2,2-bis (2,3-dicarboxyphenyl) propane dianhydride, 1 , 1-bis (3,4-dicarboxyphenyl) ethane dianhydride, 1,1-bis (2,3-dicarboxyphenyl) ethane dianhydride, bis (3,4-dicarboxyphenyl) methane dianhydride Thing, screw (2,3- Carboxyphenyl) methane dianhydride, bis (3,4-dicarboxyphenyl) sulfone dianhydride, bis (3,4-dicarboxyphenyl) ether dianhydride, 1,2,5,6-naphthalenetetracarboxylic acid Dianhydride, 9,9-bis (3,4-dicarboxyphenyl) fluorenic acid dianhydride, 9,9-bis {4- (3,4-dicarboxyphenoxy) phenyl} fluorenic acid dianhydride, 2 , 3,6,7-Naphthalenetetracarboxylic dianhydride, 2,3,5,6-pyridinetetracarboxylic dianhydride, 3,4,9,10-perylenetetracarboxylic dianhydride, 2,2 Aromatic tetracyclic dianhydrides such as bis (3,4-dicarboxyphenyl) hexafluoropropane dianhydride and 1,2,3,4-cyclobutanetetracarboxylic dianhydride Aliphatic tetracarboxylic dianhydrides such as water, 1,2,3,4-cyclopentanetetracarboxylic dianhydride, 1,2,3,4-cyclohexanetetracarboxylic dianhydride, and 3, It may be 3 ′, 4,4′-diphenylsulfone tetracarboxylic acid dianhydride or the like.

  For example, the polymerization reaction can be performed at 100 to 130 ° C., or 110 to 120 ° C. for 2 hours to 24 hours, or 4 hours to 12 hours.

  For example, the carboxylic acid dianhydride may be added in an amount of 5 to 40 parts by weight, 10 to 30 parts by weight, or 10 to 20 parts by weight based on 100 parts by weight of the monomer represented by Chemical Formulas 12 to 16.

  As an example, the method of preparing the cardo-based binder resin including at least one repeating unit of Chemical Formula 3 and Chemical Formula 4 includes a step of adding an end-capping agent after the initiation of the polymerization reaction and reacting. Can be included.

  The end capping reaction may be performed at 100 to 130 ° C., or 110 to 120 ° C. for 30 minutes to 4 hours, or 1 hour to 3 hours, for example.

  For example, the end capping agent may be added in an amount of 2 to 10 parts by weight, 2 to 5 parts by weight, or 3 to 5 parts by weight based on 100 parts by weight of the monomer represented by the chemical formulas 12 to 16.

  The terminal capping agent is preferably an aromatic carboxylic acid anhydride as one example, and a phthalic acid anhydride as a specific example. In this case, it has excellent effects on heat resistance, high transmission and high refractive properties.

  The weight average molecular weight of the cardo type binder resin containing at least one repeating unit of the chemical formula 3 and the chemical formula 4 is, for example, 1,000 to 100,000 g / mol, preferably 2,000 to 50,000 g / mol, More preferably, it may be 3,000 to 10,000 g / mol. Within this range, the heat resistance is excellent, the development speed of the photosensitive material and the development with a developer are suitable, and the pattern formation is easy. There is.

  The weight average molecular weight can be measured by a gel permeation chromatography (GPC) method.

  The dispersity of the cardo type binder resin containing at least one repeating unit of the chemical formulas 3 and 4 is, for example, in the range of 1.0 to 5.0, preferably in the range of 1.5 to 4.0. Within this range, the heat resistance is excellent, the development speed of the optical material and the development with a developing solution are suitable, and the pattern formation is easy.

  The degree of dispersion described herein can be measured by the GPC measuring method.

  In still another embodiment of the present invention, the alkali-soluble resin may further include an acrylic binder resin. When the alkali-soluble resin further includes the acrylic binder resin, the size of the smallest pattern that can be formed without loss of the pattern is small, which is advantageous in that high resolution pattern realization and pattern straightness are advantageous. .

  Examples of the acrylic binder resin include a carboxyl group-containing monomer and a copolymer with another monomer copolymerizable with this monomer.

  Examples of the carboxyl group-containing monomer include unsaturated monocarboxylic acids, unsaturated dicarboxylic acids, unsaturated tricarboxylic acids, and unsaturated carboxylic acids such as unsaturated polycarboxylic acids having one or more carboxyl groups in the molecule. Acid etc. are mentioned. Here, examples of the unsaturated monocarboxylic acid include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, and cinnamic acid. Examples of unsaturated dicarboxylic acids include maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid and the like. The unsaturated polycarboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride, and citraconic anhydride. Further, the unsaturated polycarboxylic acid may be its mono (2-methacryloyloxyalkyl) ester, for example, mono (2-acryloyloxyethyl) succinate, mono (2-methacryloyloxyethyl) succinate, phthalic acid. Examples thereof include acid mono (2-acryloyloxyethyl) and mono (2-methacryloyloxyethyl) phthalate.

  The unsaturated polycarboxylic acid may be a mono (meth) acrylate of a dicarboxy polymer at both ends thereof, and examples thereof include ω-carboxypolycaprolactone monoacrylate and ω-carboxypolycaprolactone monomethacrylate. These carboxyl group-containing monomers can be used alone or in admixture of two or more. Examples of the other monomer copolymerizable with the carboxyl group-containing monomer include styrene, α-methylstyrene, o-vinyltoluene, m-vinyltoluene, p-vinyltoluene, p-chlorostyrene, o- Methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinylbenzyl methyl ether, p-vinylbenzyl methyl ether, o-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p- Aromatic vinyl compounds such as vinylbenzyl glycidyl ether and indene; methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-pro Rumethacrylate, n-butyl acrylate, n-butyl methacrylate, i-butyl acrylate, i-butyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, t-butyl acrylate, t-butyl methacrylate, 2-hydroxyethyl acrylate, 2 -Hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxy Butyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate Rate, allyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, 2-methoxyethyl methacrylate, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate , Methoxydiethylene glycol methacrylate, methoxytriethylene glycol acrylate, methoxytriethylene glycol methacrylate, methoxypropylene glycol acrylate, methoxypropylene glycol methacrylate, methoxydipropylene glycol acrylate, methoxydipropylene glycol methacrylate Isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl acrylate, dicyclopentadiethyl methacrylate, adamantyl (meth) acrylate, norbornyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3 -Unsaturated carboxylic acid esters such as phenoxypropyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-amino Propyl acrylate, 2-aminopropyl methacrylate, 2-dimethylaminopropyl acrylate, 2-dimethylaminopro Unsaturated alkyl carboxylic acid aminoalkyl esters such as methyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate and 3-dimethylaminopropyl methacrylate; unsaturated carboxylic acids such as glycidyl acrylate and glycidyl methacrylate Glycidyl esters; carboxylic acid vinyl esters such as vinyl acetate, vinyl propionate, vinyl butyrate, vinyl benzoate; unsaturated ethers such as vinyl methyl ether, vinyl ethyl ether, allyl glycidyl ether; acrylonitrile, methacrylonitrile, α -Vinyl cyanide compounds such as chloroacrylonitrile and vinylidene cyanide; acrylamide, methacrylamide, α-chloroacrylamide, N-2 Unsaturated amides such as hydroxyethyl acrylamide and N-2-hydroxyethyl methacrylamide; unsaturated imides such as maleimide, benzylmaleimide, N-phenylmaleimide and N-cyclohexylmaleimide; 1,3-butadiene, isoprene, chloroprene, etc. An aliphatic conjugated diene; and polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, poly-n-butyl methacrylate, polysiloxane having a monoacryloyl group or a monomethacryloyl group at the end of the polymer molecular chain. Examples thereof include giant monomers. These monomers may be used alone or in admixture of two or more.

  In particular, a bulky monomer such as a monomer having a norbornyl skeleton, a monomer having an adamantane skeleton, or a monomer having a rosin skeleton as another monomer copolymerizable with the carboxyl group-containing monomer. Is preferred because it tends to reduce the non-dielectric constant value.

  The acrylic binder resin may be included in an amount of 10 to 90 parts by weight, preferably 20 to 80 parts by weight, and more preferably 30 to 70 parts by weight, based on 100 parts by weight of the alkali-soluble resin. There is an advantage that processability such as pattern realization of resolution and pattern straightness is advantageous.

  The content of the alkali-soluble resin is usually 1 to 50 parts by weight, preferably 3 to 40 parts by weight, more preferably 5 to 30 parts by weight, based on 100 parts by weight of the entire photosensitive resin composition. When the content of the alkali-soluble resin satisfies the above range, the solubility in the developing solution is sufficient, so that a development residue is less likely to occur on the substrate in the non-pixel portion, and the film in the pixel portion in the exposed portion during development. It is preferable that the decrease is less likely to occur and the missing property of the non-pixel portion tends to be good.

Scattering Particles The photosensitive resin composition according to the present invention contains scattering particles containing a metal oxide having an average particle diameter of 30 to 500 nm.

  In yet another embodiment of the present invention, the metal oxide is Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, It can include one or more oxides selected from the group consisting of Yb, Ti, Sb, Sn, Zr, Nb, Ce, Ta, In and combinations thereof.

In yet another embodiment of the present invention, the metal oxide is Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , ITO, IZO, ATO. , ZnO—Al, Nb ₂ O ₃ , SnO, MgO and combinations thereof, and may be optionally surface-treated with a compound having an unsaturated bond such as acrylate. Materials can also be used.

  The scattering particles limit the average particle size and the content in the overall composition so that the emission intensity of the color filter can be maximized.

  In the present invention, the “average particle size” may be a number average particle size, and can be determined from, for example, a phase observed by a field emission scanning electron microscope (FE-SEM) or a transmission electron microscope (TEM). Specifically, it is possible to extract some samples from an observed image of FE-SEM or TEM, measure the diameters of these samples, and obtain an arithmetic mean value.

  The metal oxide may have an average particle size of 30 to 500 nm, preferably 30 to 300 nm. When the average particle diameter of the metal oxide satisfies the above range, the scattering effect increases, and even if the photosensitive resin composition containing the scattering particles does not contain blue quantum dots, a blue light source serves as a blue pixel. Since it can be carried out, it is possible to prevent the development from sinking in the composition and to obtain a surface of the blue pattern layer having a uniform quality. Therefore, it can be appropriately adjusted and used within the above range.

  In still another embodiment of the present invention, the scattering particles may be included in an amount of 0.1 to 50 parts by weight, preferably 0.5 to 30 parts by weight, based on 100 parts by weight of the entire photosensitive resin composition. It may be included, more preferably 0.5 to 20 parts by weight. When the scattering particles are included in the range, there is an advantage that a color filter having excellent emission intensity can be manufactured. Specifically, when the scattering particles are included in the range, it is possible to easily secure the emission intensity to be obtained, and it is possible to suppress deterioration of stability of the composition.

Blue Colorant The photosensitive resin composition of the present invention may further contain a blue colorant. Since the photosensitive resin composition according to the present invention further contains a blue colorant, the light of the light source reflected by the scattering particles described later prevents development which is reflected again by external light such as sunlight, and has a high quality. There is an advantage that image quality can be realized.

  The blue colorant may specifically include a blue pigment, and the blue pigment may be a compound specifically classified as a pigment by a color index (The Society of Dyers and Colorists publication), and more specifically. Specific examples include pigments having the following color index (CI) numbers, but the pigments are not necessarily limited to these.

  In yet another embodiment of the present invention, the blue colorant is C.I. I. Pigment Blue 15: 3, 15: 4, 15: 6, 16, 21, 28, 60, 64, 76 and at least one blue pigment selected from the group consisting of combinations thereof.

  Among these, C.I. I. Pigment Blue 15: 3, C.I. I. Pigment Blue 15: 4, Pigment Blue 15: 6, C.I. I. Pigment Blue 16 is preferably contained from the viewpoint of suppressing external light reflection and achieving high color reproducibility.

  In yet another embodiment of the present invention, the blue colorant may further include one or more selected from the group consisting of dyes and purple pigments.

  The purple pigment may be, for example, C.I. I. Pigment Violet 1, 14, 19, 23, 29, 32, 33, 36, 37, 38 and combinations thereof, and may be one or more selected from the group consisting of C.I. I. It is preferable to use Pigment Violet 23 in order to realize high color reproducibility through a small amount of coloring material.

  Examples of the dye include compounds classified as dyes in a color index (published by The Society of Dyers and Colourists) or known blue or purple dyes described in Dyeing Note (Color Dye).

For example, C.I. I. As a solvent dye,
C. I. Solvent Blue 5, 35, 36, 37, 44, 45, 59, 67 and 70; and C.I. I. Solvent violet 8, 9, 13, 14, 36, 37, 47 and 49 and the like.

  Among them, C.I. I. Solvent Blue 35, 36, 44, 45 and 70; and C.I. I. It is preferable to include at least one selected from the group consisting of solvent violet 13.

In addition, C.I. I. As an acid dye,
C. I. Acid Blue 1, 7, 9, 15, 18, 23, 25, 27, 29, 40, 42, 45, 51, 62, 70, 74, 80, 83, 86, 87, 90, 92, 96, 103, 112, 113, 120, 129, 138, 147, 150, 158, 171, 182, 192, 210, 242, 243, 256, 259, 267, 278, 280, 285, 290, 296, 315, 324: 1, 335 and 340; and C.I. I. Acid Violet 6B, 7, 9, 17, 19 and 66 and the like.
Among them, C.I. I. Acid Blue 80 and 90; and C.I. I. It is preferable to contain one or more selected from the group consisting of Acid Violet 66.

In addition, C.I. I. As a direct dye,
C. I. Direct Blue 38, 44, 57, 70, 77, 80, 81, 84, 85, 86, 90, 93, 94, 95, 97, 98, 99, 100, 101, 106, 107, 108, 109, 113, 114, 115, 117, 119, 137, 149, 150, 153, 155, 156, 158, 159, 160, 161, 162, 163, 164, 166, 167, 170, 171, 172, 173, 188, 189, 190, 192, 193, 194, 196, 198, 199, 200, 207, 209, 210, 212, 213, 214, 222, 228, 229, 237, 238, 242, 243, 244, 245, 247, 248, 250, 251, 252, 256, 257, 259, 260, 268, 274, 275 and 293; Preliminary C. I. Direct violet 47, 52, 54, 59, 60, 65, 66, 79, 80, 81, 82, 84, 89, 90, 93, 95, 96, 103 and 104 and the like can be mentioned.

In addition, C.I. I. As a modant dye,
C. I. Modant blue 1, 2, 3, 7, 8, 9, 12, 13, 15, 16, 19, 20, 21, 22, 23, 24, 26, 30, 31, 32, 39, 40, 41, 43 , 44, 48, 49, 53, 61, 74, 77, 83 and 84;
C. I. Mordant violet 1, 2, 4, 5, 7, 14, 22, 24, 30, 31, 32, 37, 40, 41, 44, 45, 47, 48, 53 and 58 and the like.

  The dyes may be used alone or in combination of two or more.

  In still another embodiment of the present invention, the blue colorant is 0.1 to 50 parts by weight, preferably 0.5 to 30 parts by weight, and more preferably 100 parts by weight of the entire photosensitive resin composition. It may be included in 1 to 20 parts by weight.

  If the content of the blue colorant is less than the above range, it may be difficult to secure the effect of suppressing the reflection of external light to be obtained. On the contrary, if the content exceeds the above range, the increase of the emission intensity is slightly increased. Since it may be lowered, and the problem of lowering the viscosity stability of the composition occurs, it is appropriately used within the above range.

  In yet another embodiment of the present invention, the photosensitive resin composition may further include one or more selected from the group consisting of a photopolymerizable compound; a photopolymerization initiator; a solvent; and an additive.

Photopolymerizable compound The photopolymerizable compound contained in the photosensitive resin composition of the present invention is a compound that can be polymerized by the action of light and a photopolymerization initiator described below, and is a monofunctional monomer or a bifunctional monolayer. Body, other polyfunctional monomers, and the like.

  Specific examples of the monofunctional monomer include nonylphenyl carbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexyl carbitol acrylate, 2-hydroxyethyl acrylate, and N-vinylpyrrolidone.

  Specific examples of the bifunctional monomer include 1,6-hexanediol di (meth) acrylate, ethylene glycol di (meth) acrylate, neopentyl glycol di (meth) acrylate, triethylene glycol di (meth) acrylate, Examples thereof include bis (acryloyloxyethyl) ether of bisphenol A and 3-methylpentanediol di (meth) acrylate.

  Specific examples of the other polyfunctional monomers include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, dipenta. Examples thereof include erythritol hexa (meth) acrylate. Among these, bifunctional or higher polyfunctional monomers are preferably used.

  The photopolymerizable compound is used in an amount of 1 to 30 parts by weight, preferably 5 to 20 parts by weight, based on 100 parts by weight of the entire photosensitive resin composition. When the photopolymerizable compound satisfies the above range, the strength and smoothness of the pixel portion tend to be good, which is preferable.

Photopolymerization Initiator The photopolymerization initiator used in the present invention preferably contains an acetophenone compound.

  Examples of the acetophenone compound include diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyldimethyl ketal, 2-hydroxy-1- [4- (2-hydroxyethoxy). Phenyl] -2-methylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, 2-methyl-1- (4-methylthiophenyl) -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino- Examples thereof include 1- (4-morpholinophenyl) butan-1-one, 2-hydroxy-2-methyl [4- (1-methylvinyl) phenyl] propan-1-one oligomer, and the like, preferably 2-benzyl- 2-dimethylamino-1- (4-morpholinophenyl) butan-1-one and the like can be mentioned.

  Further, a photopolymerization initiator other than the above acetophenone type can be used in combination. Examples of the photopolymerization initiator other than the acetophenone-based photoinitiator include active radical generators that generate active radicals by irradiation with light, an increase / decrease agent, and an acid generator.

  Examples of the falson nadical generator include benzoin compounds, benzophenone compounds, thioxanthone compounds, and triazine compounds. Examples of the benzoin-based compound include benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoisobutyl ether. Examples of the benzophenone compound include benzophenone, methyl o-benzoylbenzoate, 4-phenylbenzophenone, 4-benzoyl-4′-methyldiphenyl sulfide, 3,3 ′, 4,4′-tetra (t-butylperoxy). Carbonyl) benzophenone, 2,4,6-trimethylbenzophenone and the like. Examples of the thioxanthone compound include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1-chloro-4-propoxythioxanthone. Examples of the triazine-based compound include 2,4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1,3,5-triazine and 2,4-bis (trichloromethyl) -6- (4. -Methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- (4-methoxystyryl) -1,3,5-triazine, 2,4-bis (trichloromethyl)- 6- [2- (5-Methylfuran-2-yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (furan-2-yl) ethenyl] -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- [2- (4-diethylamino-2-methylphenyl) ethenyl] -1,3,5-triazine, 2,4-bis (Trichloromethyl Like 6- [2- (3,4-dimethoxyphenyl) ethenyl] -1,3,5-triazine. Examples of the active radical generator include 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,2, -bis (o-chlorophenyl) -4,4 ′, 5,5′-tetraphenyl-1,2. '-Biimidazole, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzyl, 9,10-phenathrenequinone, camphorquinone, methyl phenylglyoxylate, titanocene compounds and the like can be used.

  Examples of the acid generator include 4-hydroxyphenyldimethylsulfonium p-toluenesulfonate, 4-hydroxyphenyldimethylsulfonium hexafluoroantimonate, 4-acetoxyphenyldimethylsulfonium p-toluenesulfonate and 4-acetoxyphenylmethylbenzylsulfonium hexanate. Onium salts such as fluoroantimonate, triphenylsulfonium p-toluenesulfonate, triphenylsulfonium hexafluoroantimonate, diphenyliodonium p-toluenesulfonate, diphenyliodonium hexafluoroantimonate, nitrobenzyl tosylates, benzointosylates, etc. Can be mentioned. Further, as the active radical generator, there are compounds that generate an acid at the same time as the active radical. For example, a triazine-based photopolymerization initiator is also used as the acid generator.

  The content of the photopolymerization initiator used in the photosensitive resin composition according to the present invention is usually 0. 0 relative to the total amount of the alkali-soluble resin and the photopolymerizable compound based on 100 parts by weight of the total solid content. It is 1 to 40 parts by weight, preferably 1 to 30 parts by weight. Within the above range, the photosensitive resin composition tends to have high sensitivity, and the strength of the pixel portion formed using this composition and the smoothness on the surface of the pixel portion tend to be good. It is preferable because it exists. Consequently, in the present invention, a photopolymerization initiation auxiliary agent can be used. The photopolymerization initiation aid may be used in combination with the photopolymerization initiator, and is a compound used for promoting the polymerization of the photopolymerizable compound whose polymerization is initiated by the photopolymerization initiator. is there. Examples of the photopolymerization initiation aid include amine compounds, alkoxyanthracene compounds, and thioxanthone compounds.

  Examples of the amine compound include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, and 2-dimethylaminoethyl benzoate. , 2-dimethylhexyl 4-dimethylaminobenzoate, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzopheno (commonly called Michler's ketone), 4,4'-bis (diethylamino) benzophenone, 4,4 Examples thereof include'-bis (ethylmethylamino) benzophenone, and among these, 4,4'-bis (diethylamino) benzophenone is preferable. Examples of the alkoxyanthracene compounds include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, and 2-ethyl-9,10-diethoxyanthracene. . Examples of the thioxanthone compound include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1-chloro-4-propoxythioxanthone and the like. Such photopolymerization initiation assistants may be used alone or in combination of two or more. In addition, a commercially available photopolymerization initiation auxiliary agent can be used, and examples of the commercially available photopolymerization initiation auxiliary agent include trade name “EAB-F” [manufacturer: Hodogaya Chemical Co., Ltd.] and the like. Can be mentioned.

  When these photopolymerization initiation assistants are used, the amount thereof is usually 10 mol or less, preferably 0.01 to 5 mol, per 1 mol of the photopolymerization initiator. Within the above range, the sensitivity of the photosensitive resin composition is further increased, and the productivity of the color filter formed using this composition tends to be improved, which is preferable.

Solvent The solvent contained in the photosensitive resin composition of the present invention is not particularly limited, and various organic solvents used in the field of photosensitive resin composition can be used. Specific examples thereof include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether and other ethylene glycol monoalkyl ethers, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol dipropyl ether, diethylene glycol diethylene glycol. Diethylene glycol dialkyl ethers such as butyl ether, methyl cellosolve acetate, ethylene glycol alkyl ether acetates such as ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether Alkylene glycol alkyl ether acetates such as acetate, methoxybutyl acetate and methoxypentyl acetate, aromatic hydrocarbons such as benzene, toluene, xylene and mesitylene, ketones such as methyl ethyl ketone, acetone, methyl amyl ketone, methyl isobutyl ketone and cyclohexanone , Ethanol, propanol, butanol, hexanol, cyclohexaneol, ethylene glycol, alcohols such as glycerin, ethyl 3-ethoxypropionate, esters such as methyl 3-methoxypropionate, and cyclic esters such as γ-butyrolactone. To be Among the above solvents, organic solvents having a boiling point of 100 ° C. to 200 ° C. among the above solvents are preferable from the viewpoints of coating properties and drying properties, and more preferable are alkylene glycol alkyl ether acetates, ketones, and 3-ethoxy. Examples include esters such as ethyl propionate and methyl 3-methoxypropionate, and more preferably propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate, and methyl 3-methoxypropionate. And so on. The solvents may be used alone or in combination of two or more.

  The content of the solvent in the photosensitive resin composition of the present invention is usually 60 to 90 parts by weight, preferably 70 to 85 parts by weight, based on 100 parts by weight of the entire photosensitive resin composition containing the solvent. When the content of the solvent satisfies the above range, the coatability is good when coated with a coating device such as a roll coater, a spin coater, a slit and spin coater, a slit coater (also referred to as a die coater), or an inkjet. It is preferable because it tends to become

Additives In the photosensitive resin composition of the present invention, if necessary, additives such as a filler, another polymer compound, a pigment dispersant, an adhesion promoter, an antioxidant, an ultraviolet absorber and an agglomeration inhibitor are added. It is also possible to use together.

  Specific examples of the filler include glass, silica, alumina and the like. Specific examples of the other polymer compounds include curable resins such as epoxy resins and maleimide resins, thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ethers, polyfluoroalkyl acrylates, polyesters and polyurethanes. Is mentioned. As the pigment dispersant, a commercially available surfactant can be used, and examples thereof include silicone-based, fluorine-based, ester-based, cationic-based, anionic-based, nonionic-based, and amphoteric-based surfactants. . These can be used alone or in combination of two or more. Examples of the above-mentioned surfactants include polyoxyethylene alkyl ethers, polyoxyethylene alkylphenyl ethers, polyethylene glycol diesters, sorbitan fatty acid esters, fatty acid modified polyesters, tertiary amine modified polyurethanes, polyethyleneimines, etc. In addition, as other product names, KP (manufactured by Shin-Etsu Chemical Co., Ltd.), Polyflow (POLYFLOW) (manufactured by Kyoeisha Chemical Co., Ltd.), EFTOP (manufactured by Tochem Products Co., Ltd.), MEGAFAC (Dainippon Ink and Chemicals) Company), Fluorad (manufactured by Sumitomo 3M), Asahi guard, Surflon (manufactured by Asahi Glass Co., Ltd.), Solsperse (Zeneca production), EFKA (Chemicals Co. production) include PB821 (Ajinomoto manufacture),. Examples of the adhesion promoter include vinyltrimethoxysilane, vinyltriethoxysilane, vinyltris (2-methoxyethoxy) silane, N- (2-aminoethyl) -3-aminopropylmethyldimethoxysilane, N- (2-aminoethyl). ) -3-Aminopropyltrimethoxysilane, 3-aminoprotriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltri Examples thereof include methoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, and 3-mercaptopropyltrimethoxysilane. Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol) and 2,6-di-t-butyl-4-methylphenol. Specific examples of the ultraviolet absorber include 2- (3-tert-butyl-2-hydroxy-5-methylphenyl) -5-chlorobenzotriazole and alkoxybenzophenone. Specific examples of the aggregation preventing agent include sodium polyacrylate.

  A person skilled in the art can additionally use the additive in an appropriate amount as long as the effect of the present invention is not impaired.

  The method for producing the photosensitive resin composition is not limited to this, but it can be produced by the following method, for example.

  The scattering particles are mixed with a solvent in advance and dispersed using a bead mill or the like until the average particle size becomes 30 to 500 nm. At this time, a dispersant may be further used if necessary, and a part or all of the alkali-soluble resin may be blended. The remaining dispersion of the alkali-soluble resin, a photopolymerizable compound, a photopolymerization initiator, other components used as necessary, and an additional solvent if necessary, in the obtained dispersion liquid (hereinafter, sometimes referred to as mill base). Can be further added so as to have a predetermined concentration to obtain the intended photosensitive resin composition.

<Color filter and image display device>
Still another aspect of the present invention relates to a self-luminous pixel-containing color filter including a blue pattern layer containing a cured product of the photosensitive resin composition described above.

  In the present invention, the photosensitive resin composition may be a blue pattern layer forming photosensitive resin composition. In the present invention, the photosensitive resin composition does not contain quantum dots.

  Since the color filter according to the present invention is manufactured using the above-mentioned photosensitive resin composition instead of the blue quantum dots, it has advantages that the manufacturing cost can be reduced and the viewing angle is excellent.

  The color filter includes a substrate and a blue pattern layer formed on the substrate.

  The substrate may be the color filter itself substrate or a portion where the color filter is located in a display device or the like, but is not particularly limited. The substrate may be glass, silicon (Si), silicon oxide (SiOx), or a polymer substrate, and the polymer substrate may be polyethersulfone (PES) or polycarbonate (polycarbonate, PC). It may be.

  The blue pattern layer is a layer containing the photosensitive resin composition of the present invention, which is a layer formed by applying the photosensitive resin composition, exposing in a predetermined pattern, developing and thermosetting. Alternatively, the pattern layer can be formed by a method commonly known in the art.

  The color filter may further include at least one selected from the group consisting of a red pattern layer and a green pattern layer. That is, the color filter according to the present invention may include a self-luminous pixel including the blue pattern layer described above and further including at least one selected from the group consisting of a red pattern layer and a green pattern layer.

  The red pattern layer or the green pattern layer may include quantum dots and scattering particles. Specifically, the color filter according to the present invention may include a red pattern layer including red quantum dots or a green pattern layer including green quantum dots, and the red pattern layer or green pattern layer may include scattering particles. it can. The red pattern layer or the green pattern layer may emit red light or blue light by a light source that emits blue light, which will be described later.

  The scattering particles may include a metal oxide having an average particle diameter of 30 to 500 nm, and the details of the scattering particles and the metal oxide are the scattering particles and the metal oxide contained in the photosensitive resin composition according to the present invention. You can apply content related to things.

  In the present invention, the form, composition and content of the quantum dots included in the red pattern layer or the green pattern layer are not limited, and quantum dots commonly used in the art can be applied.

  The color filter including the substrate and the pattern layer may further include barrier ribs formed between the patterns, and may further include a black matrix, but is not limited thereto.

  Yet another aspect of the present invention relates to an image display device including the color filter described above; and a light source that emits blue light. That is, the image display device according to the present invention includes a color filter including a blue pattern layer including a cured product of the photosensitive resin composition described above and a light source that emits blue light.

  The color filter of the present invention can be applied not only to a normal liquid crystal display device but also to various image display devices such as an electroluminescent display device, a plasma display device and a field emission display device.

  When the image display device includes the color filter including the blue pattern layer according to the present invention and the light source, it has an advantage of having excellent emission intensity or viewing angle. In addition, since the blue pattern layer included in the color filter according to the present invention does not include blue quantum dots, there is an advantage that an image display device having a low manufacturing cost can be manufactured.

  Hereinafter, the present specification will be described in detail with reference to Examples. However, the embodiments according to the present specification can be modified into various other forms, and the scope of the present specification is not construed as being limited to the embodiments detailed below. The examples herein are provided to those of ordinary skill in the art in order to more fully describe the present specification. Further, "%" and "parts" indicating the contents below are on a weight basis unless otherwise specified.

Synthesis example: Synthesis of alkali-soluble resin
Synthesis Example 1: A flask equipped with an alkali-soluble resin stirrer, a thermometer, a reflux condenser, a dropping funnel and a nitrogen introducing tube was prepared, while as a monomer dropping funnel, 74.8 g (0.20 mol) of benzylmaleimide, After charging 43.2 g (0.30 mol) of acrylic acid, 118.0 g (0.50 mol) of vinyltoluene, 4 g of t-butylperoxy-2-ethylhexanoate, and 40 g of propylene glycol monomethyl ether acetate (PGMEA). The mixture was prepared by stirring and mixing, and 6 g of n-dodecanethiol and 24 g of PGMEA were added and stirred and mixed as a dropping tank of the chain transfer agent. Then, 395 g of PGMEA was introduced into the flask, the atmosphere in the flask was changed from air to nitrogen, and then the temperature of the flask was raised to 90 ° C while stirring. Then, the monomer and the chain transfer agent were added dropwise from the dropping funnel. The dropping was proceeded for 2 hours while maintaining 90 ° C., and after 1 hour, the temperature was raised to 110 ° C. and maintained for 3 hours, and then a gas introduction tube was introduced to introduce oxygen / nitrogen = 5/95 (v / v). Bubbling of the mixed gas was started. Next, 28.4 g of glycidyl methacrylate [(0.10 mol), (33 mol% with respect to the carboxyl group of acrylic acid used in this reaction)], 2,2'-methylenebis (4-methyl-6-t) -Butylphenol) 0.4 g and triethylamine 0.8 g were charged into the flask and the reaction was continued at 110 ° C. for 8 hours to obtain a resin A having a solid content acid value of 70 mgKOH / g. The polystyrene-equivalent weight average molecular weight measured by GPC was 16,000, and the molecular weight distribution (Mw / Mn) was 2.3.

Synthetic Example 2: Synthesis of compound of Chemical Formula 1 3 ', 6'-dihydroxyspiro (fluorene-9,9-xanthene) (3', 6 "-dihydroxyspiro (fluorene-9,9) of Chemical Formula 3 was placed in a 3000 ml three-neck round flask. -Xanthene) 364.4 g and t-butylammonium bromide 0.4159 g were mixed, and epichlorohydrin 2359 g was added and reacted by heating at 90 ° C. Analysis by liquid chromatography revealed 3,6-dihydroxy. When the spiro (fluorene-9,9-xanthene) was completely exhausted, it was cooled to 30 ° C. and 50% aqueous NaOH solution (3 eq) was added slowly, which was analyzed by liquid chromatography to confirm that epichlorohydrin was not present. When it is completely exhausted, it is extracted with dichloromethane, washed three times with water, and then the organic layer is separated. After drying with magnesium, then dichloromethane was distilled off under vacuum and recrystallized using 50:50 dichloromethane and methanol.

  After mixing 1 equivalent of the epoxy compound thus synthesized, 0.004 equivalent of t-butylammonium bromide, 0.001 equivalent of 2,6-diisobutylphenol, and 2.2 equivalent of acrylic acid, the solvent propylene glycol monomethyl ether acetate 24 0.89 g was added and mixed. While blowing air at 25 ml / min into this reaction solution, it was heated and dissolved at a temperature of 90 to 100C. When the reaction solution became cloudy, the temperature was heated to 120 ° C. to completely dissolve it. When the solution became clear and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mg KOH / g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound of Formula 1.

Synthesis Example 3: Synthesis of Compound of Chemical Formula 2 4,3 '-(9H-xanthene-9,9-diyl) diphenol (4,4'-(9H-xanthene-9, 36-4.4 g of 9-diyl) diphenol) and 0.4159 g of t-butylammonium bromide were mixed, 2359 g of epichlorohydrin was added, and the mixture was heated to 90 ° C. for reaction. Liquid chromatography analysis revealed that 4,4 '-(9H-xanthene-9,9-diyl) diphenol (4,4'-(9Hxanthene-9,9-diyl) diphenol) was completely exhausted, Cooled to 30 ° C. and slowly added 50% aqueous NaOH (3 eq). When the liquid was analyzed by liquid chromatography and epichlorohydrin was completely exhausted, it was extracted with dichloromethane, washed with water three times, and the organic layer was dried over magnesium sulfate. Recrystallization was carried out using a mixing ratio of methanol of 50:50. After mixing 1 equivalent of the epoxy compound thus synthesized, 0.004 equivalent of t-butylammonium bromide, 0.001 equivalent of 2,6-diisobutylphenol, and 2.2 equivalent of acrylic acid, the solvent propylene glycol monomethyl ether acetate 24 0.89 g was added and mixed. While blowing air at 25 ml / min into this reaction solution, it was heated and dissolved at a temperature of 90 to 100 ° C. When the reaction solution became cloudy, the temperature was heated to 120 ° C. to completely dissolve it. When the solution became clear and the viscosity increased, the acid value was measured and stirred until the acid value was less than 1.0 mg KOH / g. It took 11 hours for the acid value to reach the target (0.8). After completion of the reaction, the temperature of the reactor was lowered to room temperature to obtain a colorless and transparent compound of Formula 2.

Synthesis Example 4: Synthesis of Cardo Binder Resin (A-1)
600 g of propylene glycol monomethyl ether acetate was added to and dissolved in 307.0 g of the compound of Chemical Formula 1 of Synthesis Example 2, 78 g of biphenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide were mixed, and the temperature was gradually raised. The reaction was carried out at 110 to 115 ° C for 4 hours. After confirming the disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and allowed to react at 90 ° C. for 6 hours to polymerize with a cardo type binder resin. The disappearance of the anhydride was confirmed by IR spectrum. Resin A-1 having an acid value of solid content of 70 mgKOH / g was obtained. The polystyrene equivalent weight average molecular weight measured by GPC was 4,530.

Synthesis Example 5: Synthesis of Cardo Binder Resin (A-2)
After 600 g of propylene glycol monomethyl ether acetate was added to and dissolved in 307.0 g of the compound of Chemical Formula 2 of Synthesis Example 3, 78 g of phenyltetracarboxylic dianhydride and 1 g of tetraethylammonium bromide were mixed and gradually heated. The reaction was carried out at 110 to 115 ° C for 4 hours. After confirming the disappearance of the acid anhydride group, 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride was mixed and allowed to react at 90 ° C. for 6 hours to polymerize with a cardo type binder resin. The disappearance of the anhydride was confirmed by IR spectrum. Resin A-2 having an acid value of solid content of 98 mgKOH / g was obtained. The polystyrene equivalent weight average molecular weight measured by GPC was 3,830.

Synthesis Example 6: Synthesis of Cardo Binder Resin (B-1, B-2)
(1) Synthesis Example 6-1: 2,2 ′-((((9H-fluorene-9,9-diyl) bis (4,1-phenylene)) bis (oxy)) bis (methylene)) bis (oxirane ) (2,2 ′-((((9H-fluorene-9,9-diyl) bis (4,1-phenylene)) bis (oxy)) bis (methylene)) bis (oxirane)) 9,9 -Bisphenol fluorene (9,9-bispehnolfluorene 42.5g was put, 220-ml of 2- (chloromethyl) oxirane (2- (chloromethyl) oxirane) and t-butylammonium bromide (t-butylammonium bromide) were reacted together at 90 ° C. Stir until everything is exhausted, then depressurize After further reducing the temperature by 30 ° C. and injecting dichloromethane, NaOH was gradually added in. After confirming that the product was 96% or more by high performance liquid chromatography (HPLC) method, The reaction was terminated by the dropwise addition of 5% HCl.The reaction product was extracted and the layers were separated, and the organic layer was washed with water and neutralized, and the organic layer was dried over MgSO ₄ . Distilled under reduced pressure with a rotary evaporator and concentrated, dichloromethane was added to the concentrated product, methanol was added while stirring while raising the temperature to 40 ° C., and then the solution temperature was lowered. After stirring, the generated solid was filtered and then vacuum dried at room temperature to obtain 52.7 g (yield 94%) of a white solid powder.

(2) Synthesis Example 6-2: 3,3 ′-((9H-fluorene-9,9-diyl) bis (4,1-phenylene)) bis ((oxy)) bis (1-phenylthio) propane-2 -Ol) (3,3 '-(((9H-Fluorene-9,9-diyl) bis (4,1-phenylene)) bis (oxy)) bis (1- (phenylthio) propan-2-ol)) (BTCP) Synthesis The compound of Synthesis Example 6-1 (1000 g), 524 g of thiophenol (thiophenol), and 617 g of ethanol were added and stirred. 328 g of triethylamine was slowly added dropwise to the reaction solution. After confirming the disappearance of the starting material by a high performance liquid chromatography (HPLC) method, the reaction was terminated. After completion of the reaction, ethanol was removed by distillation under reduced pressure. The organic substance was dissolved in dichloromethane, washed with water, and then the dichloromethane was removed by distillation under reduced pressure. The concentrated organic substance was dissolved in ethyl acetate, then an ether solvent was added dropwise, and the mixture was stirred for 30 minutes. The compound was distilled under reduced pressure to obtain 945 g (yield: 64%) of pale yellow oil.

(3) Synthesis Example 6-3: Synthesis of Cardo Binder Resin (B-1)
200 g of BTCP monomer dissolved in a 50% PGMEA solvent was added and the temperature was raised to 115 ° C. After adding 31.1 g of 3,3 ', 4,4'-biphenyltetracarboxylic dianhydride (3,3', 4,4'-Biphenyltetracarboxylic dianhydride) at 115 ° C, the temperature was maintained at 115 ° C for 6 hours. While stirring. After adding 7.35 g of phthalic anhydride, the reaction was terminated after further stirring for 2 hours. After cooling, a binder resin having a weight average molecular weight of 3,500 g / mol was obtained.

(4) Synthesis Example 6-4: Synthesis of Cardo Binder Resin (B-2)
200 g of BTCP monomer dissolved in a 50% PGMEA solvent was added and the temperature was raised to 115 ° C. After 21.1 g of pyromellitic dianhydride was added dropwise at 115 ° C, the mixture was stirred for 6 hours while maintaining 115 ° C. After adding 7.35 g of phthalic anhydride and further stirring for 2 hours, the reaction was completed. After cooling, a binder solution having a weight average molecular weight of 4,500 g / mol was obtained.

  At this time, the weight average molecular weight (Mw) of the resin was measured by the GPC method under the following conditions.

Device: HLC-8120GPC (manufactured by Tosoh Corporation)
Column: TSK-GELG4000HXL + TSK-GELG2000HXL (series connection)
Column temperature: 40 ° C
Mobile phase solvent: Tetrahydrofuran Flow rate: 1.0 ml / min Injection volume: 50 μl
Detector: RI
Measurement sample concentration: 0.6% by weight (solvent = tetrahydrofuran)
Calibration standard substance: TSK STANDARD POLYSTYRENE F-40, F-4, F-1, A-2500, A-500 (manufactured by Tosoh Corporation)

Examples 1 to 46 Comparative Examples 1 to 10: Production of Photosensitive Resin Composition Photosensitive resin compositions according to Examples and Comparative Examples were produced according to the compositions shown in Tables 1 to 9 below (Table 1 shows scattering particles. Table 2 shows blue and purple colorants, Tables 3 to 7 show constitutions and contents of photosensitive resin compositions according to Examples, and Tables 8 and 9 show constitutions and contents of photosensitive resin compositions according to Comparative Examples. ).

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

1) Photopolymerizable compound (C): dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.)
2) Initiator (D): Irgaqure-907 (manufactured by BASF)
3) Solvent (E): Propylene glycol monomethyl ether acetate

Manufacture of Color Filter A color filter was manufactured using the photosensitive resin compositions manufactured in the above Examples and Comparative Examples. That is, each of the above-mentioned photosensitive resin compositions was applied on a glass substrate by a spin coating method, placed on a heating plate and kept at a temperature of 100 ° C. for 3 minutes to form a thin film.

  Next, a test photomask having a square transmission pattern of 20 mm × 20 mm and a line / space pattern of 1 to 100 μm was placed on the thin film, and the distance between the test photomask and the test photomask was set to 100 μm and ultraviolet rays were applied. Was irradiated.

At this time, as an ultraviolet light source, an ultra-high pressure mercury lamp (trade name USH-250D) manufactured by USHIO INC. Was used to irradiate light with an exposure amount (365 nm) of 200 mJ / cm ^{2 in} the atmosphere, and a special optical filter. Did not use.

  The thin film irradiated with ultraviolet rays was immersed in a KOH aqueous solution developing solution having a pH of 10.5 for 80 seconds to develop the thin film. The glass plate provided with this thin film was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150 ° C. for 10 minutes to produce a color filter pattern. The film thickness of the color pattern manufactured as described above was 5.0 μm.

Experimental Example 1: Development Speed, Sensitivity, and Pattern Stability of Color Filter The development speed, sensitivity, and pattern stability of the color filters manufactured from the photosensitive resin compositions of Experimental Examples and Comparative Examples were measured. The evaluation criteria for each experiment are as follows. The measurement results are shown in Table 10.

Development speed (sec): Time taken for the non-exposed area to first dissolve in the developer during development <Spray Developer HPMJ method> Sensitivity: The extent to which a thin film of the sensitivity mask fine pattern (1-60) was formed (The lower the number, the better the sensitivity)
Pattern stability: Error degree of pattern after exposure of pattern mask at low exposure amount (20 to 100 mJ) ◯: No error on pattern Δ: When error is 1 to 2 on pattern ×: Error on pattern 3 or more (○, △, × are the confirmation results of the three-dimensional surface shaper through an optical microscope)

Experimental Example 2: Color filter solvent resistance and heat resistance measurement experiment Through the heat resistance and solvent resistance measurement experiments of the color filters manufactured from the photosensitive resin compositions according to the above Examples and Comparative Examples, It was evaluated whether it is stable to the heat and solvent used at the time of manufacturing or at the time of manufacturing the liquid crystal display device. The measurement results are shown in Table 10.

Evaluation of solvent resistance: The manufactured color filter is immersed in the solvent NMP (1-methyl-2-pyrrolidinone) for 30 minutes, and the color change before and after the evaluation is calculated to perform comparative evaluation. The formula used at this time is calculated by the following formula (1) showing the color change in the three-dimensional colorimeter defined by L ^* , a ^* , and b ^* .

  Evaluation of heat resistance: The color filter manufactured by the above method was heated in a heating oven at 230 ° C. for 2 hours, and then calculated by the mathematical formula (1) in order to measure the color change before and after heating.

Equation ^{(1) △ Eab * = [} (△ L *) 2 + (△ a *) 2 + (△ b *) 2] 1/2
◯: ΔEab ^* = 1 or less Δ: ΔEab ^* = 1 to 3
×: ΔEab ^* = exceeded 3

Experimental Example 3: Fine pattern formation experiment OM equipped with a pattern size obtained through a line / space pattern mask designed to 100 μm among color filters manufactured using the photosensitive resin according to the above-mentioned example and comparative example. The size of the pattern was measured using (ECLIPSE LV100POL, manufactured by Nikon Corporation). The measurement results are shown in Table 10.

  If the difference between the design value of the line / space pattern mask and the measured value of the obtained fine pattern is 20 μm or more, it becomes difficult to realize the fine pixel. If it has a negative value, it means a critical value that causes a process defect. .

  From this, referring to Table 10, it was confirmed that fine patterns were well formed when the average particle diameter of the metal oxide scattering particles was in the range of 30 to 500 nm. In the case of the comparative example, it was confirmed that it was difficult to form a fine pattern.

  Further, from the above evaluation results, when the introduction of a cardo type binder or the combination of a cardo type binder and an acrylic type binder is used, the sensitivity, pattern stability, fine pattern and reliability are more excellent than when the acrylic type binder resin is applied alone. I was able to confirm.

Experimental Example 4 Measurement of Luminous Intensity A 365 nm tube type of a color filter manufactured by using the scattering particles of the example and the photosensitive resin according to the comparative example was formed in a square pattern of 20 × 20 mm. A 4W UV irradiator (VL-4LC, VILBER LOURMAT) was used to measure the light-converted region. In Examples and Comparative Examples, the emission intensity in the region of 450 nm was measured using a Spectrum meter (Ocean Optics). It was measured. The measurement results are shown in Table 11.

Experimental Example 5: Measurement of viewing angle A portion of a color filter manufactured by using the photosensitive resin composition manufactured according to the above-mentioned Examples and Comparative Examples was transmitted through a portion formed in a regular square pattern of 20 × 20 mm. The light intensity (Intensity) according to the viewing angle under the conditions was measured using a goniophotometer (GC-5000L, Nippon Denshoku), and the diffusivity was calculated using the following mathematical formula (2). The measurement results are shown in Table 11.

Formula (2)
Spreading rate = (I70 + I20) / 2 × I5 × 100
I means the light intensity (Intensity) measured at the viewing angle.

Experimental Example 6: Measurement of reflectance Among the color filters manufactured using the photosensitive resin compositions manufactured in Examples 22 to 46 and Comparative Examples 5 to 10, the color filters were formed in a square pattern of 20 x 20 mm. The light reflectance under the light-transmitting condition was measured on the exposed portion using a spectrophotometer CM-3600A (manufactured by Konica Minolta), and the measurement results are shown in Table 11.

  The higher the measured emission intensity is, the higher the light efficiency is. From this, referring to Table 11, it can be confirmed that in the case of the examples in which the scattering particles of the metal oxide have an average particle diameter in the range of 30 to 500 nm, the emission intensity is improved as compared with the comparative example. did it.

  The higher the measured diffusivity, the better the viewing angle. From this, referring to Table 11, in the case of the example in which the metal oxide scattering particles were metal oxide scattering particles having an average particle diameter of 30 to 500 nm, the viewing angle was improved as compared with the comparative example. I was able to confirm.

The lower the measured reflectance, the better the effect of suppressing external light reflection, which means that it is advantageous for high-quality image quality. From this, it can be confirmed from Table 11 that the example is excellent in reflectance and emission intensity.

Claims (11)

An alkali-soluble resin; and scattering particles containing a metal oxide having an average particle size of 30 to 500 nm;
The alkali-soluble resin is a group consisting of a first cardo type binder resin polymerized by containing a compound represented by the following chemical formula 1 and a second cardo type binder resin polymerized by containing a compound represented by the following chemical formula 2. A photosensitive resin composition containing one or more selected from:
[Chemical formula 1]
[Chemical formula 2]
In chemical formula 1,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R3 is hydrogen or an alkyl group having 1 to 5 carbon atoms,
In formula 2,
X is hydrogen, an alkyl group having 1 to 5 carbon atoms or a hydroxyl group,
R6 is hydrogen or an alkyl group having 1 to 5 carbon atoms. The photosensitive resin composition according to claim 1, wherein the alkali-soluble resin further comprises a cardo type binder resin containing at least one repeating unit of the following chemical formulas 3 and 4.
[Chemical formula 3]
[Chemical formula 4]
In the above Chemical Formulas 3 and 4,
R7 and R8 are each independently hydrogen, a hydroxy group, a thiol group, an amino group, a nitro group or a halogen atom,
Ar1 is each independently a C6 to C15 aryl group,
Y is an acid anhydride residue,
Z is an acid dianhydride residue,
A is O, S, N, Si or Se,
a and b are each independently an integer of 1 to 6,
n and m are each independently an integer of 0 to 30,
However, n and m are not 0 at the same time.   The photosensitive resin composition according to claim 1, further comprising a blue colorant.   The metal oxide includes Li, Be, B, Na, Mg, Al, Si, K, Ca, Sc, V, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Rb, Sr, Y, Mo, Cs, Ba, La, Hf, W, Tl, Pb, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Ti, Sb, Sn, Zr, The photosensitive resin composition according to claim 1, which contains one or more oxides selected from the group consisting of Nb, Ce, Ta, In, and combinations thereof. The metal _{oxide, Al 2 O 3, SiO 2} , ZnO, ZrO 2, BaTiO 3, TiO 2, Ta 2 O 5, Ti 3 O 5, ITO, IZO, ATO, ZnO-Al, Nb 2 O 3, The photosensitive resin composition according to claim 4, which comprises one or more selected from the group consisting of SnO, MgO, and combinations thereof.   The photosensitive resin composition according to claim 1, wherein the alkali-soluble resin further contains an acrylic binder resin.   The photosensitive resin composition according to claim 1, wherein the scattering particles are contained in an amount of 0.1 to 50 parts by weight based on 100 parts by weight of the entire photosensitive resin composition.   The photosensitive resin composition according to claim 1, wherein the cardo type binder resin is contained in an amount of 1 to 50 parts by weight based on 100 parts by weight of the entire photosensitive resin composition.   The photosensitive resin composition according to claim 1, which further comprises one or more selected from the group consisting of a photopolymerizable compound; a photopolymerization initiator; a solvent; and an additive.   A self-luminous pixel-containing color filter comprising: a blue pattern layer containing the cured product of the photosensitive resin composition according to claim 1. An image display device comprising: the color filter according to claim 10; and a light source that emits blue light.