TW201837098A - Blue photosensitive resin composition, color filter and image display device produced using the same - Google Patents

Abstract

This invention relates to a blue photosensitive resin composition and to a color filter and an image display device manufactured using the same, the blue photosensitive resin composition including scattering particles, a blue colorant, a binder resin, a photopolymerizable compound, a photoinitiator and a solvent, the solvent including a solvent (A) having a boiling point of 100 to 169 DEG C and a solvent (B) having a boiling point of 170 to 250 DEG C.

Description

Blue photosensitive resin composition, color filter and image display device manufactured using the same

The invention relates to a blue photosensitive resin composition and a color filter and image display device manufactured by using the blue photosensitive resin composition.

A color filter is a thin-film optical component in which three colors are extracted from white light, namely red, green, and blue, so that the three colors can be used pixel by pixel, and the size of a single pixel is approximately tens to hundreds of microns . Such a color filter is configured to include a black matrix layer and pixel portions stacked in sequence, the black matrix layer is formed on a transparent substrate in a predetermined pattern, and is intended to shield the boundary between each pixel. It is composed of three colors (ie, red (R), green (G), and blue (B)) arranged in a predetermined order to form each pixel.

Recently, a color filter is manufactured by a pigment dispersion process using a pigment-dispersed photosensitive resin. However, when the light emitted from the light source passes through the color filter, part of the light is absorbed by the color filter, thereby reducing the light efficiency, and due to the nature of the pigment contained in the color filter, the accuracy of color reproduction May fall.

In order to solve such problems, a method of manufacturing a color filter using a self-luminous photosensitive resin composition including quantum dots has been proposed.

Specifically, Korean Patent Application Publication No. 2007-0094679 discloses a color filter layer formed of quantum dots to increase color reproducibility, and Korean Patent Application Publication No. 2009-0036373 discloses by passing The light-emitting layer containing quantum dot phosphor is used to replace the existing color filter to improve the light efficiency and achieve the improvement of display quality.

However, the photosensitive resin composition developed so far for manufacturing color filters cannot solve problems such as vacuum-drying (VD) stains, pin stains, and the like.

[List of citations]

[Patent Literature]

(Patent Document 1) Korean Patent Application Publication No. 2007-0094679

(Patent Document 2) Korean Patent Application Publication No. 2009-0036373

Therefore, the present invention aims to provide a blue photosensitive resin composition and a color filter and an image display device manufactured using the blue photosensitive resin composition, the blue photosensitive resin composition having excellent flow properties Therefore, vacuum drying stains and needle stains are not generated, so that a color filter that can exhibit uniform light intensity and reduce the occurrence of display defects can be realized, especially a self-luminous color filter.

Therefore, the present invention provides a blue photosensitive resin composition including scattering particles, a blue colorant, a cardo binder resin, a photopolymerizable compound, and a photoinitiator Agent and solvent, and the solvent includes solvent A having a boiling point of 100°C to 169°C and solvent B having a boiling point of 170°C to 250°C.

In addition, the present invention provides a color filter including a blue pattern layer formed of the blue photosensitive resin composition.

Furthermore, the present invention provides an image display device including the above color filter and a light source for emitting blue light.

According to the present invention, the blue photosensitive resin composition includes a solvent including a solvent A having a boiling point of 100°C to 169°C and a solvent B having a boiling point of 170°C to 250°C, so the blue photosensitive resin composition has excellent The flow properties of the product do not produce vacuum drying stains and needle stains, so that color filters that can exhibit uniform light intensity and reduce the occurrence of display defects can be realized, especially self-luminous color filters. In addition, it can provide self-luminous color filters with high-quality images and excellent viewing angles.

The present invention proposes a blue photosensitive resin composition. The blue photosensitive resin composition of the present invention does not include blue quantum dots but includes scattering particles, blue colorants, shaft binder resins, and solvents, thereby preventing blue pixel performance degradation and reducing manufacturing costs.

Specifically, the blue photosensitive resin composition of the present invention includes scattering particles, a blue colorant, a joint binder resin, a photoinitiator, a photopolymerizable compound, and a solvent. In particular, in the present invention, the solvent is used in the form of a mixture including a solvent A having a boiling point of 100°C to 169°C and a solvent B having a boiling point of 170°C to 250°C, thereby including such blue sensitivity The color filter of the blue pattern layer formed of the resin composition can avoid yellowing at high temperature due to high heat resistance, and can exhibit uniform light intensity. In addition, the color filter will not have afterimages, which are easily generated by the process of minimizing outgassing during panel operation, and can be eliminated by eliminating the development process The disconnection of the inter-pixel electrode caused by the formed inverted cone reduces the occurrence of display defects. In addition, it is possible to provide a self-luminous color filter with high-quality images and excellent viewing angles, and an image display device including the color filter.

Hereinafter, the configuration of the present invention will be described in detail.

Scattering particles

In the present invention, the scattering particles may be metal oxides having an average particle diameter of 10 nm to 1000 nm, and preferably 30 nm to 500 nm. If the average particle diameter of the scattering particles is less than the lower limit of the above range, the light emitted by the quantum dots cannot be sufficiently scattered. On the other hand, if the average particle diameter exceeds the upper limit of the above range, the scattering particles may precipitate in the composition, or the surface of the self-luminous layer with uniform quality cannot be obtained.

The metal oxide may be an oxide including any metal selected from the group consisting of 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, Nb, Ce, Ta, In and combinations thereof. More specifically, the metal oxide may be at least one selected from the group consisting of Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , Nb ₂ O ₃ , SnO and MgO. If necessary, a material surface-treated with a compound having an unsaturated bond (for example, acrylate) may be used.

Limit the average particle size of the scattering particles and the amount in the composition to fully improve the light intensity of the color filter.

Based on the total weight of the solid content of the blue photosensitive resin, the content of the scattering particles is 0.1% to 50% by weight, preferably 5% to 30% by weight. When the amount of scattering particles falls within the above range, the light intensity can be increased and the stability of the composition can be ensured.

Blue colorant

In the blue colorant of the present invention, the blue pigment may include compounds classified as pigments according to the Color Index (published by the Society of Dyers and Colourists), and may be specifically Statements include but are not limited to the following color index (CI) numbered pigments. Specific examples of blue pigments may include C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:4, C.I. Pigment Blue 15:6, C.I. Pigment Blue 16, C.I. Pigment Blue 21, C.I. Pigment Blue 28, and C.I. Pigment Blue 76. It is preferable to use at least one selected from the group consisting of C.I. Pigment Blue 15:3, C.I. Pigment Blue 15:6, and C.I. Pigment Blue 16.

The blue colorant of the present invention may further include a blue dye, and the blue dye may include a compound classified as a dye according to a colorimetric index (published by the British Dyestuff and Colorist Association) or a dyeing note The conventional dyes disclosed in Shikisensha Co. Ltd.

Specific examples of dyes that can be additionally used may include C.I. solvent dyes, C.I. acid dyes, C.I. direct dyes, and C.I. mordant dyes.

Examples of CI solvent dyes may include CI solvent blue 5, CI solvent blue 35, CI solvent blue 36, CI solvent blue 37, CI solvent blue 44, CI solvent blue 45, CI solvent blue 59, CI solvent blue 67 and CI solvent blue 70, and at least one of CI Solvent Blue 35, CI Solvent Blue 36, CI Solvent Blue 44, CI Solvent Blue 45, and CI Solvent Blue 70 is preferably used.

Also, examples of CI acid dyes may include CI acid blue 1, CI acid blue 7, CI acid blue 9, CI acid blue 15, CI acid blue 18, CI acid blue 23, CI acid blue 25, CI acid blue 27, CI Acid Blue 29, CI Acid Blue 40, CI Acid Blue 42, CI Acid Blue 45, CI Acid Blue 51, CI Acid Blue 62, CI Acid Blue 70, CI Acid Blue 74, CI Acid Blue 80, CI Acid Blue 83, CI Acid Blue 86, CI Acid Blue 87, CI Acid Blue 90, CI Acid Blue 92, CI Acid Blue 96, CI Acid Blue 103, CI Acid Blue 112, CI Acid Blue 113, CI Acid Blue 120, CI Acid Blue 129, CI Acid Blue 138, CI Acid Blue 147, CI Acid Blue 150, CI Acid Blue 158, CI Acid Blue 171, CI Acid Blue 182, CI Acid Blue 192, CI Acid Blue 210, CI Acid Blue 242, CI Acid Blue 243, CI Acid Blue 256, CI Acid Blue 259, CI Acid Blue 267, CI Acid Blue 278, CI Acid Blue 280, CI Acid Blue 285, CI Acid Blue 290, CI Acid Blue 296, CI Acid Blue 315, CI Acid Blue 324:1 , CI Acid Blue 335 and CI Acid Blue 340. Among them, at least one of C.I. Acid Blue 80 and C.I. Acid Blue 90 is preferably used.

Also, examples of CI direct dyes may include CI direct blue 38, CI direct blue 44, CI direct blue 57, CI direct blue 70, CI direct blue 77, CI direct blue 80, CI direct blue 81, CI direct blue 84, CI Direct Blue 85, CI Direct Blue 86, CI Direct Blue 90, CI Direct Blue 93, CI Direct Blue 94, CI Direct Blue 95, CI Direct Blue 97, CI Direct Blue 98, CI Direct Blue 99, CI Direct Blue 100, CI Direct Blue 101, CI Direct Blue 106, CI Direct Blue 107, CI Direct Blue 108, CI Direct Blue 109, CI Direct Blue 113, CI Direct Blue 114, CI Direct Blue 115, CI Direct Blue 117, CI Direct Blue 119, CI Direct Blue 137, CI Direct Blue 149, CI Direct Blue 150, CI Direct Blue 153, CI Direct Blue 155, CI Direct Blue 156, CI Direct Blue 158, CI Direct Blue 159, CI Direct Blue 160, CI Direct Blue 161, CI Direct Blue 162, CI Direct Blue 163, CI Direct Blue 164, CI Direct Blue 166, CI Direct Blue 167, CI Direct Blue 170, CI Direct Blue 171, CI Direct Blue 172, CI Direct Blue 173, CI Direct Blue 188, CI Direct Blue 189, CI Direct Blue 190, CI Direct Blue 192, CI Direct Blue 193, CI Direct Blue 194, CI Direct Blue 196, CI Direct Blue 198, CI Direct Blue 199, CI Direct Blue 200, CI Direct Blue 207, CI Direct Blue 209, CI Direct Blue 210, CI Direct Blue 212, CI Direct Blue 213, CI Direct Blue 214, CI Direct Blue 222, CI Direct Blue 228, CI Direct Blue 229, CI Direct Blue 237, CI Direct Blue 238, CI Direct Blue 242, CI Direct Blue 243, CI Direct Blue 244, CI Direct Blue 245, CI Direct Blue 247, CI Direct Blue 248, CI Direct Blue 250, CI Direct Blue 251, CI Direct Blue 252, CI Direct Blue 256, CI Direct Blue 257, CI Direct Blue 259, CI Direct Blue 260, CI Direct Blue 268, CI Direct Blue 274, CI Direct Blue 275 and CI Direct Blue 293.

Also, examples of CI mordant dyes may include CI mordant blue 1, CI mordant blue 2, CI mordant blue 3, CI mordant blue 7, CI mordant blue 8, CI mordant blue 9, CI mordant blue 12, CI mordant blue 13, CI Mordant blue 15, CI mordant blue 16, CI mordant blue 19, CI mordant blue 20, CI mordant blue 21, CI mordant blue 22, CI mordant blue 23, CI mordant blue 24, CI mordant blue 26, CI mordant blue 30, CI Mordant blue 31, CI mordant blue 32, CI mordant blue 39, CI mordant blue 40, CI mordant blue 41, CI mordant blue 43, CI mordant blue 44, CI mordant blue 48, CI mordant blue 49, CI mordant blue 53, CI Mordant Blue 61, CI Mordant Blue 74, CI Mordant Blue 77, CI Mordant Blue 83 and CI Mordant Blue 84.

These blue dyes can be used alone or in combination of two or more thereof.

The blue colorant of the present invention may further include other colorants, such as purple colorants. The purple colorant may include at least one of a purple pigment and a purple dye, and specific examples of the purple pigment may include CI pigment violet 1, CI pigment violet 14, CI pigment violet 19, CI pigment violet 23, CI pigment violet 29, CI Pigment Violet 32, CI Pigment Violet 33, CI Pigment Violet 36, CI Pigment Violet 37 and CI Pigment Violet 38. Among them, C.I. Pigment Violet 23 is preferably used.

Specific examples of purple dyes may include, but are not limited to, C.I. solvent violet, C.I. acid violet, C.I. direct violet, and C.I. mordant violet.

Specifically, examples of CI solvent violet may include CI solvent violet 8, CI solvent violet 9, CI solvent violet 13, CI solvent violet 14, CI solvent violet 36, CI solvent violet 37, CI solvent violet 47, and CI solvent violet 49 , And preferably CI solvent violet 13. Examples of C.I. Acid Violet may include C.I. Acid Violet 6B, C.I. Acid Violet 7, C.I. Acid Violet 9, C.I. Acid Violet 17, C.I. Acid Violet 19, and C.I. Acid Violet 66, and preferably C.I. Acid Violet 66. Examples of CI Direct Violet may include CI Direct Violet 47, CI Direct Violet 52, CI Direct Violet 54, CI Direct Violet 59, CI Direct Violet 60, CI Direct Violet 65, CI Direct Violet 66, CI Direct Violet 79, CI Direct Violet 80, CI Direct Violet 81, CI Direct Violet 82, CI Direct Violet 84, CI Direct Violet 89, CI Direct Violet 90, CI Direct Violet 93, CI Direct Violet 95, CI Direct Violet 96, CI Direct Violet 103 and CI Direct Violet 104.

Also, it can include CI mordant violet 1, CI mordant violet 2, CI mordant violet 4, CI mordant violet 5, CI mordant violet 7, CI mordant violet 14, CI mordant violet 22, CI mordant violet 24, CI mordant violet 30, CI Mordant Violet 31, CI mordant Violet 32, CI mordant Violet 37, CI mordant Violet 40, CI mordant Violet 41, CI mordant Violet 44, CI mordant Violet 45, CI mordant Violet 47, CI mordant Violet 48, CI mordant Violet 53 and CI Mordant purple 58.

Based on the total weight of the solid content of the blue photosensitive resin, the content of the blue colorant is 0.1% to 50% by weight, preferably 0.5% to 30% by weight. When the amount of the blue colorant falls within the above range, the ideal effect of suppressing the reflection of external light can be achieved, the color with good light intensity can be effectively displayed, and the viscosity stability of the composition can be ensured.

Binder resin

The adhesive resin of the present invention includes a shaft joint adhesive resin. The shaft binder resin has alkali solubility and reactivity under the action of light or heat, and is used as a dispersion medium for coloring materials. The shaft-based binder resin contained in the blue photosensitive resin composition of the present invention functions as a binder resin for scattering particles, and it is not limited as long as it can be dissolved in the development process during the manufacture of the color filter The resin in the alkaline developer used may be sufficient.

The shaft-joint binder resin of the present invention may include at least one of the compounds represented by the following Chemical Formula 1-1 and Chemical Formula 1-2.

In Chemical Formula 1-1 and Chemical Formula 1-2, R ₁ , R ₂ , R ₃ and R ₄ are independently , Where X is a hydrogen atom, a C1-C5 alkyl group, or a hydroxyl group, and R ₅ is a hydrogen atom or a C1-C5 alkyl group.

In the present invention, the compound of Chemical Formula 1-1 can be synthesized from the compound represented by the following Chemical Formula 2-1, and the compound of Chemical Formula 1-2 can be synthesized from the compound represented by the following Chemical Formula 2-2.

Specifically, the compound of Chemical Formula 1-1 may be at least one of the compounds represented by the following Chemical Formula 1-1-1 and Chemical Formula 1-1-2, and the compound of Chemical Formula 1-2 may be a compound represented by the following Chemical Formula 1- At least one of the compounds represented by 2-1 and Chemical Formula 1-2-2.

[Chemical Formula 1-1-1]

The joint binder resin can be selected from 9,9-bis(3-cinnamic acid diester) stilbene, 9,9-bis(3-cinnamyl-4-hydroxyphenyl) stilbene, 9,9 -Bis(glycidyl methacrylate ether) stilbene, 9,9-bis(3,4-dihydroxyphenyl) stilbene cinnamate, 3,6-diglycidyl methacrylate ether spiro ( Fusi-9,9-dibenzopiperan (xanthene), 9,9-bis(3-allyl-4-hydroxyphenyl) fuzi, 9,9-bis(4-allyloxyphenyl) ) At least one of the group consisting of stilbene and 9,9-bis(3,4-methacrylic diester) stilbene is reacted with at least one selected from the group consisting of maleic anhydride, succinic anhydride, and Icon Anhydride, phthalic anhydride, tetrahydrophthalic anhydride, hexahydrophthalic anhydride, methyl internal methylenetetrahydrophthalic anhydride, chlorendic anhydride and methyltetrahydro An anhydride group consisting of phthalic anhydride; or an aromatic polycarboxylic anhydride such as pyromellitic anhydride, benzophenone tetracarboxylic dianhydride, biphenyltetracarboxylic dianhydride, and biphenyl An acid dianhydride group composed of ether tetracarboxylic dianhydride, but the present invention is not limited thereto.

The binder resin of the present invention may further include an acrylic alkali-soluble resin. The acrylic alkali-soluble resin can be exemplified by a copolymer of a carboxyl group-containing monomer and other comonomers that can be polymerized therewith. The carboxyl group-containing monomer may include, for example, unsaturated carboxylic acid having at least one carboxyl group in its molecule, including unsaturated monocarboxylic acid or unsaturated polycarboxylic acid, such as unsaturated dicarboxylic acid, unsaturated tricarboxylic acid, and the like. Here, examples of the unsaturated monocarboxylic acid may include acrylic acid, methacrylic acid, crotonic acid, α-chloroacrylic acid, cinnamic acid, and the like. Examples of unsaturated dicarboxylic acids may include maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, and the like. The unsaturated polycarboxylic acid may be an anhydride, and specific examples thereof may include maleic anhydride, itaconic anhydride, and citraconic anhydride. Furthermore, the unsaturated polycarboxylic acid may be its mono(2-methacryloyloxyalkyl) ester, for example, mono(2-acryloyloxyethyl) succinate, mono(2-methacryloyl) Oxyethyl) succinate, mono(2-acryloyloxyethyl) phthalate, or mono(2-methacryloyloxyethyl) phthalate. The unsaturated polycarboxylic acid may be a mono(meth)acrylate having a dicarboxylic acid polymer at both ends thereof, for example, ω-carboxypolycaprolactone monoacrylate, ω-carboxypolycaprolactone monomethacrylate Ester etc. These carboxyl group-containing monomers can be used alone or in combination of two or more thereof. Examples of other comonomers copolymerizable with carboxyl group-containing monomers may include aromatic vinyl compounds such as styrene, α-methylstyrene, o-vinyl toluene, m-vinyl toluene, p-vinyl toluene, P-chlorostyrene, o-methoxystyrene, m-methoxystyrene, p-methoxystyrene, o-vinylbenzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, O-vinylbenzyl glycidyl ether, m-vinylbenzyl glycidyl ether, p-vinylbenzyl glycidyl ether, and indene; unsaturated carboxylic acid esters, such as methyl acrylate, methyl methacrylate, ethyl acrylate , Ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, isopropyl acrylate, isopropyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, methyl Isobutyl acrylate, second butyl acrylate, second butyl methacrylate, third butyl acrylate, third butyl methacrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate , 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, methacrylic acid-2 -Hydroxybutyl ester, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl acrylate, methacrylate Propyl, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate, 2-methoxyethyl acrylate, methacrylic acid-2 -Methoxyethyl, 2-phenoxyethyl acrylate, 2-phenoxyethyl methacrylate, methoxydiethylene glycol acrylate, methoxydiethylene glycol methacrylate , Methoxy triethylene glycol acrylate, methoxy triethylene glycol methacrylate, methoxy propylene glycol acrylate, methoxy propylene glycol methacrylate, methoxy dipropylene glycol acrylate, methoxy Dipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadienyl acrylate, dicyclopentadienyl methacrylate, adamantane (meth)acrylate Ester, norbornyl(meth)acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate And glycerol monomethacrylate; unsaturated carboxylic acid aminoalkyl esters, such as 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate , 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethylaminopropyl acrylate, methacrylic acid -2-Dimethylaminopropyl ester, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate and 3-dimethacrylate Methylaminopropyl ester; unsaturated carboxylic acid glycidyl ester, such as acrylic acid Glycidyl ester and glycidyl methacrylate; carboxylic acid vinyl esters, such as vinyl acetate, vinyl propionate, vinyl butyrate, and vinyl benzoate; unsaturated ethers, such as vinyl methyl ether, vinyl ether And allyl glycidyl ether; vinyl cyanide, such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile, and dicyanethylene vinylene; unsaturated amides, such as acryloamide, methacryloamide, α -Chloroacrylamide, N-2-hydroxyethylacrylamide, and N-2-hydroxyethylmethacrylamide; unsaturated amide imines, such as maleimide, benzylmaleimide Amine, N-phenylmaleimide, and N-cyclohexylmaleimide; aliphatic conjugated dienes such as 1,3-butadiene, isoprene, and chloroprene; and Macromonomers with mono-acryloyl or mono-methacryloyl groups at the ends of polymer molecular chains, such as polystyrene, polymethyl acrylate, polymethyl methacrylate, poly-n-butyl acrylate, polymethyl N-butyl acrylate, and polysiloxane. These monomers can be used alone or in combination of two or more thereof. As other comonomers that can be polymerized with carboxyl group-containing monomers, particularly useful ones are bulky monomers, such as monomers having a norbornyl backbone, monomers having an adamantane backbone, and having a rosin backbone Monomer, etc., so this monomer will reduce the relative dielectric constant.

In the present invention, the shaft-joint binder resin and/or the acrylic alkali-soluble resin may have an acid value of 20 to 200 (mg KOH/g). Within the above acid value range, the solubility in the developing solution can be improved, so the unexposed portion can be easily dissolved and the sensitivity can be increased, whereby the pattern of the exposed portion can be retained during development, thereby improving the residual film ratio. Here, the acid value is the amount (mg) of potassium hydroxide required to neutralize 1 gram of the acrylic polymer, and is usually determined by performing a titration process using an aqueous potassium hydroxide solution. In addition, the shaft-joint binder resin or acrylic alkali-soluble resin may have a polystyrene standard by gel permeation chromatography (GPC, using tetrahydrofuran as an elution solvent) of 2000 to 200,000, and preferably 3000 to 100,000. The measured weight average molecular weight (hereinafter abbreviated as "weight average molecular weight"). Within the above molecular weight range, the hardness of the coating film may increase, thereby obtaining a high film residual rate, and the solubility of the unexposed portion in the developing solution is high, and the resolution thereof is improved.

The molecular weight distribution [weight average molecular weight (Mw)/number average molecular weight (Mn)] of the joint binder resin and/or acrylic alkali-soluble resin preferably falls within the range of 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)] is 1.5 to 6.0, high developability may be produced.

Based on the total weight of the solid content of the blue photosensitive resin, the amount of the binder resin of the present invention is 5 to 85% by weight, and preferably 5 to 60% by weight. When the amount of the binder resin falls within the above range, the solubility in the developing solution becomes sufficiently large, so that it is not easy to produce non-pixel development residue on the substrate. In addition, during development, it is difficult to cause the film of the pixel portion of the exposed portion to become smaller, so the non-pixel portion can be processed as needed.

Photopolymerizable compound

In the blue photosensitive resin composition of the present invention, the photopolymerizable compound is a compound that can be polymerized under the action of light and a photoinitiator described later, and may include a monofunctional monomer and a bifunctional monomer And other multifunctional monomers. Specific examples of the monofunctional monomer may 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 may include 1,6-hexanediol di(meth)acrylate, ethylene glycol di(meth)acrylate, neopentyl glycol di(meth)acrylate, triethylenedioxide Alcohol di(meth)acrylate, bisphenol A bis(acryloxyethyl) ether and 3-methylpentanediol di(meth)acrylate. Specific examples of other multifunctional monomers may include trimethylolpropane tri(meth)acrylate, pentaerythritol tri(meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol penta(meth)acrylate and Dipentaerythritol hexa(meth)acrylate. Among them, bifunctional monomers or higher-functional polyfunctional monomers are preferably used.

The amount of the photopolymerizable compound is 5 to 50% by weight, and preferably 5 to 30% by weight based on the total weight of the solid content of the blue photosensitive resin. When the amount of the photopolymerizable compound falls within the above range, the sensitivity may not be reduced, so sufficient film strength may be obtained, and there may be no loss of pattern during development, whereby a pattern can be effectively formed in a fine pattern portion , And can improve the smoothness of the resist layer.

Photoinitiator

In the present invention, the role of the photoinitiator is to increase the sensitivity of the photosensitive resin composition and thus to increase productivity, and it preferably contains an acetophenone-based compound. Examples of the acetophenone-based compound may include oligomers such as diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, benzyl dimethyl ketal, 2 -Hydroxy-1-[4-(2-hydroxyethoxy)phenyl]-2-methylpropan-1-one, 1-hydroxycyclohexyl ketone, 2-methyl-1-(4-methylthio Phenyl)-2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)butan-1-one, and 2-hydroxyl -2-methyl[4-(1-methylvinyl)phenyl]propan-1-one, and preferably includes 2-benzyl-2-dimethylamino-1-(4-morpholino Phenyl)butan-1-one. In addition, the acetophenone-based compound can be used in combination with other photoinitiators. Other photoinitiators other than acetophenone-based compounds may include active radical generators, sensitizers, acid generators and the like for generating active radicals by light irradiation. Examples of the active radical generator may include benzoin-based compounds, benzophenone-based compounds, thioxanthone-based compounds, and triazine-based compounds. Examples of the benzoin-based compound may include benzoin, benzoin methyl ether, benzoin ether, benzoin isopropyl ether, benzoin isobutyl ether, and the like. Examples of the benzophenone-based compound may include benzophenone, methyl o-benzoyl benzoate, 4-phenyl benzophenone, 4-benzoyl-4'-methyldiphenyl sulfide Ether, 3,3',4,4'-tetra (third butyl peroxycarbonyl) benzophenone, 2,4,6-trimethyl benzophenone, etc. Examples of the thioxanthone-based compound may include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, 1- Chloro-4-propoxythioxanthone, etc. Examples of the triazine-based compound may include 2,4-bis(trichloromethyl)-6-(4-methoxyphenyl)-1,3,5-triazine, 2,4-bis(trichloromethyl Group)-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)vinyl]-1,3,5-triazine, 2 ,4-bis(trichloromethyl)-6-[2-(furan-2-yl)vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6- [2-(4-Diethylamino-2-methylphenyl)vinyl]-1,3,5-triazine, 2,4-bis(trichloromethyl)-6-[2-( 3,4-dimethoxyphenyl)vinyl]-1,3,5-triazine, etc. Examples of the active radical generator may include 2,4,6-trimethylbenzyl diphenylphosphine oxide, 2,2'-bis(o-chlorophenyl)-4,4',5,5' -Tetraphenyl-1,2'-biimidazole, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzyl, 9,10-phenanthrenequinone, camphorquinone, methylphenyl ethyl Aldehyde esters, titanocene compounds, etc. Examples of the acid generator may include onium salts, such as 4-hydroxyphenyldimethylammonium p-toluenesulfonate, 4-hydroxyphenyldimethylammonium hexafluoroantimonate, 4-acetoxyphenyldiamine Methylammonium p-toluenesulfonate, 4-acetoxyphenylmethylbenzylammonium hexafluoroantimonate, triphenylammonium p-toluenesulfonate, triphenylammonium hexafluoroantimonate, diphenyl Iodonium p-toluenesulfonate, diphenyliodonium hexafluoroantimonate, nitrobenzyl tosylate, benzoin tosylate, etc. In addition, the active radical generator may include a compound capable of generating active radicals and an acid at the same time, and for example, a triazine-based photoinitiator may also be used as an acid generator.

In the present invention, based on the total weight of the solid content of the blue photosensitive resin, the amount of the photoinitiator contained in the blue photosensitive resin composition of the present invention is 0.1% to 30% by weight, preferably 0.3% by weight to 20% by weight. Within the range of the above amount, the blue photosensitive resin composition is highly photosensitive, and thus the strength of the pixel portion formed using the above composition or the surface smoothness of the pixel portion can be improved.

Furthermore, in the present invention, a photoinitiator adjuvant can be used. The photoinitiator adjuvant can be used in combination with a photoinitiator, and is a compound for promoting the polymerization of a photopolymerizable compound, where the polymerization is initiated by a photoinitiator. Examples of the photoinitiator adjuvant may include amine compounds, alkoxyanthracene compounds, and thioxanthone compounds.

Examples of the amine-based compound may include triethanolamine, methyldiethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, 4-dimethyl Isoamyl aminobenzoate, 2-dimethylaminoethyl benzoate, 2-ethylhexyl 4-dimethylaminobenzoate, N,N-dimethyl p-toluidine, 4, 4'-bis(dimethylamino) benzophenone (that is, Michler's ketone), 4,4'-bis(diethylamino) benzophenone, and 4,4' -Bis(ethylmethylamino) benzophenone. Particularly useful is 4,4'-bis(diethylamino)benzophenone. Examples of alkoxyanthracene-based compounds may include 9,10-dimethoxyanthracene, 2-ethyl-9,10-dimethoxyanthracene, 9,10-diethoxyanthracene, and 2-ethyl- 9,10-diethoxyanthracene. Examples of the thioxanthone-based compound may include 2-isopropylthioxanthone, 4-isopropylthioxanthone, 2,4-diethylthioxanthone, 2,4-dichlorothioxanthone, and 1 -Chloro-4-propoxythioxanthone. These photoinitiators can be used alone or in combination of two or more thereof. In addition, commercially available photoinitiator adjuvants can be used, and an exemplary commercially available photoinitiator adjuvant is "EAB-F" [manufactured by Hodogaya Chemical Co. Ltd.].

When the photoinitiator adjuvant is used in this way, the amount of the photoinitiator adjuvant is 1 or less for 10 moles of initiator, and preferably 0.01 to 5 moles ear. Within the range of the above amount, the sensitivity of the blue photosensitive resin composition is further improved, and the productivity of the color filter formed using the above composition can be improved.

Solvent

In the blue photosensitive resin composition of the present invention, the solvent includes solvent A having a boiling point of 100 to 169°C and solvent B having a boiling point of 170 to 250°C, thus exhibiting excellent flow characteristics, thereby avoiding vacuum drying stains and needle stains And pin mura occurs, and eventually a self-luminous color filter with uniform light intensity and reduced occurrence of display defects is realized.

The solvent A having a boiling point of 100 to 169°C may include at least one selected from the group consisting of ethers, aromatic hydrocarbons, ketones, alcohols, esters, and amides, and in particular, may include at least one selected from the group consisting of : Propylene glycol monomethyl ether acetate, ethylene glycol monomethyl ether (approximately 124 to 125°C), ethylene glycol monoethyl ether (approximately 135.6°C), 2-methyl ethyl acetate (methyl cellosolve acetate) (approximately 145℃), ethyl cellosolve acetate (about 156℃), toluene (about 110.6℃), xylene (about 138.4℃), mesitylene (about 164.7℃), methyl Amyl ketone (about 151°C), methyl isobutyl ketone (about 116.1°C), cyclohexanone (about 155.6°C), butanol (about 117.7°C), hexanol (about 157°C), cyclohexanol ( About 161.8°C), and ethyl 3-ethoxypropionate (about 166°C).

The solvent B having a boiling point of 170 to 250°C may include at least one selected from the group consisting of ethers, aromatic hydrocarbons, ketones, alcohols, esters, and amides, and in particular, may include at least one selected from the group consisting of : 1,3-butanediol diacetate, ethyl 3-ethoxypropionate, propylene glycol diacetate, ethylene glycol monopropyl ether (about 150 to 152°C), ethylene glycol monobutyl ether ( About 171°C), diethylene glycol diethyl ether (about 189°C), methoxybutyl acetate (about 172°C), ethylene glycol (about 197.3°C), and γ-butyrolactone (about 204°C).

When the solvent A having a boiling point of 100 to 169°C is used alone, since the drying rate is fast, stains may be generated on the surface of the coating film during vacuum drying, and thus defects may occur. On the other hand, when the solvent B having a boiling point of 170 to 250° C. is used alone, the tack time may be increased during vacuum drying. Therefore, these solvents must be properly mixed and used.

In the blue photosensitive resin composition according to the present invention, the amount of the solvent is 60% by mass to 90% by mass based on the total weight of the blue photosensitive resin composition, preferably 60% by mass to 85% by mass. When the amount of solvent falls within the above range, it can be applied using a coating device such as a roll coater, spin coater, slit spin coater, slit coater (or die coater), or inkjet coater The composition can thereby improve the coatability.

additive

The blue photosensitive resin composition according to the present invention used to form the blue pattern layer may further include additives such as fillers, other polymer compounds, pigment dispersants, adhesion promoters, antioxidants, ultraviolet absorbers, Coagulant, etc.

Specific examples of fillers may include glass, silica, alumina, and the like.

Examples of other polymer compounds may include curable resins such as epoxy resin or maleimide resin, and thermoplastic resins such as polyvinyl alcohol, polyacrylic acid, polyethylene glycol monoalkyl ether, acrylic polyfluoroalkyl group Ester, polyester or polyurethane.

The pigment dispersant may include commercially available surfactants, and examples thereof include polysiloxane-based surfactants, fluorine-based surfactants, ester-based surfactants, cationic surfactants, anionic surfactants, nonionic surfactants, and Amphoteric surfactants, which can be used alone or in combination of two or more thereof.

Examples of the surfactant may include polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyethylene glycol diester, sorbitan fatty acid ester, fatty acid-modified polyester, tertiary amine modification Polyurethane, polyethyleneimine and commercially available products such as KP (manufactured by Shin-Etsu Chemical Industry Co.), POLYFLOW (Kyoeisha Chemical Co.) , EFTOP (manufactured by Tochem Products Co., Ltd.), MEGAFAC (manufactured by Dainippon Ink & Chemical Industry Co.), Flourad (manufactured by Sumitomo 3M Ltd.), Asahi guard and Surflon (Manufactured by Asahi Glass Co.), SOLSPERSE (manufactured by Zeneca), EFKA (manufactured by EFKA Chemicals), and PB 821 (Ajinomoto Co., Ltd.) .) system)

Examples of adhesion promoters may include vinyl trimethoxy silane, vinyl triethoxy silane, vinyl tri(2-methoxyethoxy) silane, N-(2-aminoethyl)-3- Aminopropylmethyldimethoxysilane, N-(2-aminoethyl)-3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-glycidol Oxypropyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, 2-(3,4-epoxycyclohexyl)ethyltrimethoxysilane, 3-chloropropylmethyl Dimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane and 3-mercaptopropyltrimethoxysilane. Specific examples of the antioxidant may include 2,2'-thiobis(4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.

Specific examples of the ultraviolet absorber may include 2-(3-third-butyl-2-hydroxy-5-methylphenyl)-5-chlorobenzotriazole, alkoxybenzophenone, and the like.

The anti-agglomerating agent can be exemplified by sodium polyacrylate.

Those skilled in the art can appropriately add additives within the range that does not hinder the effects of the present invention. For example, based on a total of 100 parts by weight of the blue photosensitive resin composition, the additive is used in an amount of 0.05 to 10 parts by weight, preferably 0.1 to 10 parts by weight, and more preferably 0.1 to 5 parts by weight Copies, but not limited to this.

The blue photosensitive resin composition according to the present invention can be prepared by the following method. Specifically, the scattering particles and the solvent are mixed in advance, and dispersed using an bead mill or the like to an average particle diameter of 30 nm to 300 nm. In this way, the dispersant can be further used as needed, and some or all of the binder resin can be mixed with it. Add the remaining binder resin, photopolymerizable compound and photoinitiator, and other components and additional solvents as needed to the resulting dispersion solution (also known as "grinding base"), so that the composition has a predetermined Concentration to obtain the desired blue photosensitive resin composition.

<Color filter and image display device>

In addition, the present invention provides a color filter including a blue pattern layer including the cured product of the blue photosensitive resin composition.

Instead of blue quantum dots, a blue photosensitive resin composition for forming a blue pattern layer is used to manufacture the color filter of the present invention, thereby reducing manufacturing costs and ensuring excellent viewing angles.

In addition, the blue photosensitive resin composition of the present invention includes a solvent A having a boiling point of 100 to 169°C and a solvent B having a boiling point of 170 to 250°C, thereby including a blue pattern layer formed of the blue photosensitive resin composition of the present invention Of the color filter (especially the self-luminous color filter) based on the blue photosensitive resin composition can exhibit excellent flow characteristics and thus will not produce vacuum drying stains and needle stains, thereby making the color filter Show uniform light intensity and reduce the occurrence of display defects.

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

The substrate itself may be a color filter, or may be a position where the color filter is located on the display device, and is not particularly limited. The substrate may be a glass, silicon (Si), silicon oxide (SiOx) or polymer substrate, and the polymer substrate may be polyether ash (PES) or polycarbonate (PC).

The blue pattern layer is a layer including the blue photosensitive resin composition of the present invention, and may be formed in such a manner that the blue photosensitive resin composition for forming the blue pattern layer is applied, exposed in a predetermined pattern, and developed And heat curing. The pattern layer can be formed by implementing any method generally known in the art.

In another embodiment of the present invention, the color filter may further include at least one selected from the group consisting of a red pattern layer and a green pattern layer.

In yet another embodiment of the present invention, the red pattern layer or the green pattern layer may include quantum dots and/or scattering particles. Specifically, the color filter of the present invention may include a red pattern layer containing red quantum dots or a green pattern layer containing green quantum dots, and the red pattern layer or green pattern layer may include scattering particles. The red pattern layer or the green pattern layer can emit red light or green light by a light source for emitting blue light, which will be described later.

In still another embodiment of the present invention, the scattering particles may include metal oxides having an average particle diameter of 30 nm to 500 nm, and in order to describe the scattering particles and metal oxides, reference will be made to the blue color according to the present invention. Description of the scattering particles and metal oxide included in the photosensitive resin composition.

In the present invention, the shape, structure, and amount of the quantum dots of the red pattern layer or the green pattern layer are not limited, and quantum dots generally used in the present technology can be applied.

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

In the present invention, the color filter may be a self-luminous color filter.

In addition, the present invention proposes an image display device including the above color filter and a light source for emitting blue light. The image display device of the present invention includes a color filter and a light source that emits blue light. The color filter includes a blue pattern layer containing a cured product of a blue photosensitive resin composition.

The color filter of the present invention can be applied not only to typical liquid crystal display devices, but also to various image display devices, such as electroluminescence displays, plasma displays, and field emission displays.

When the image display device includes the color filter and the light source including the blue pattern layer of the present invention, it can exhibit excellent light intensity or excellent viewing angle. In addition, the blue pattern layer included in the color filter of the present invention does not include blue quantum dots, so it is expected that it is possible to manufacture an image display device at low cost.

The present invention can be better understood through the following examples, which are for illustration, but should not be construed as limiting the scope of the present invention. The embodiments of the present invention are provided to more fully explain the description to those skilled in the art to which the present invention belongs. Unless otherwise mentioned, the "%" and "parts" of the amounts indicated in the following examples are given on a weight basis.

Synthesis example: Synthesis of binder resin

Preparation Example 1: Synthesis of Compound of Chemical Formula 1-1-1

In a 3000 ml three-necked round bottom flask, 364.4 g of 3',6'-dihydroxyspiro (fu-9-9,9-dibenzopiperan) and 0.4159 g of tert-butylammonium bromide were mixed, and 2359 g Epichlorohydrin was added thereto, and the resulting mixture was heated to 90°C and reacted. When 3',6'-dihydroxyspiro (fu-9,9-dibenzopiperan) was completely consumed by liquid chromatography analysis, it was cooled to 30°C, and 50% aqueous NaOH solution (3 equivalent). When it was analyzed by liquid chromatography that epichlorohydrin was completely consumed, it was extracted with dichloromethane, then washed three times with water, and then the organic layer was dried with magnesium sulfate, and then dichloromethane was distilled off under reduced pressure, followed by dichloromethane and methanol The mixture with a mixing ratio of 50:50 is recrystallized.

Mix 1 equivalent of the epoxy compound thus synthesized, 0.004 equivalent of tert-butylammonium bromide, 0.001 equivalent of 2,6-diisobutylphenol, and 2.2 equivalent of acrylic acid, and then add 24.89 g of propylene glycol monomethyl Ether acetate solvent. The resulting reaction solution was blown in air at 25 ml/min and heated to 90°C to 100°C. The reaction solution in a cloudy state was heated to 120°C to completely dissolve. When the solution becomes transparent and its viscosity increases, the acid value is measured and stirred until the acid value is less than 1.0 mg KOH/g. It takes 11 hours to reach the required acid value (0.8). After the reaction was completed, the temperature of the reactor was lowered to room temperature, thereby obtaining a colorless transparent compound of the following Chemical Formula 1-1-1.

Preparation Example 2: Synthesis of shaft joint binder resin (C-1)

307.0 g of the compound of Formula 1-1-1 of Preparation Example 1 was added to 600 g of propylene glycol monomethyl ether acetate, dissolved, and 78 g of biphenyltetracarboxylic dianhydride and 1 g of tetraethyl bromide The ammonium was mixed, gradually heated, and reacted at 110°C to 115°C for 4 hours. After confirming the loss of the acid anhydride group, the reaction solution was mixed with 38.0 g of 1,2,3,6-tetrahydrophthalic anhydride and reacted at 90°C for 6 hours, thereby polymerizing into a shaft-joint binder Resin. Infrared spectrum analysis confirmed the loss of anhydride. Weight average molecular weight: 3500.

Device: HLC-8120 GPC (manufactured by Tosoh Corp.)

Column: TSK-GELG4000HXL+TSK-GELG2000HXL (tandem)

Column temperature: 40℃

Mobile phase solvent: tetrahydrofuran

Flow rate: 1.0 ml/min

Introduced volume: 50 microliters

Detector: RI

Measuring sample concentration: 0.6% by weight (solvent = tetrahydrofuran)

Standard calibration materials: TSK polystyrene standards F-40, F-4, F-1, A-2500, A-500 (manufactured by Tosoh Corporation)

The ratio of the weight average molecular weight obtained above to the number average molecular weight is defined as the molecular weight distribution (Mw/Mn).

Preparation Example 3: Acrylic alkali-soluble resin

Prepare a flask equipped with a stirrer, thermometer, reflux condenser, dropping funnel, and nitrogen inlet tube. Add 74.8 g (0.20 mol) benzyl maleimide, 43.2 g (0.30 mol) acrylic acid, 118.0 g (0.50 mol) vinyl toluene, 4 g hexanoic acid tributyl peroxy-2-ethyl ester And 40 grams of propylene glycol monomethyl ether acetate (PGMEA) and mixed under stirring, a monomer dropping funnel was prepared in this way, and 6 grams of n-dodecanethiol and 24 grams of PGMEA were added and mixed under stirring to In this way, a chain transfer agent dropping funnel is prepared. After that, 395 grams of PGMEA was placed in the flask, and the air in the flask was replaced with nitrogen, and then the flask temperature was raised to 90°C with stirring. Subsequently, the monomer and chain transfer agent were dropped from their respective dropping funnels. Here, the liquid was dropped for 2 hours with the temperature maintained at 90°C, respectively. After 1 hour, the temperature was raised to 110°C and held for 3 hours, and then a gas mixture of oxygen/nitrogen = 5/95 (volume/volume) was blown through the gas inlet tube. Next, add 28.4 g [(0.10 mol) of glycidyl methacrylate [(0.10 mol), (33 mol% of the carboxyl group of acrylic acid in this reaction)] and 0.4 g of 2,2′-methylene to the flask Bis(4-methyl-6-tert-butylphenol) and 0.8 g of triethylamine were then reacted at 110° C. for 8 hours, thereby obtaining Resin A with a solid acid value of 70 mg KOH/g. The polystyrene standard measurement by GPC has a weight average molecular weight of 16000 and a molecular weight distribution (Mw/Mn) of 2.3.

Example 1 to Example 4 and Comparative Example 1 to Comparative Example 5: Preparation of blue photosensitive resin composition

The corresponding blue photosensitive resin compositions of Examples 1 to 4 and Comparative Examples 1 to 5 were prepared using the components and amounts shown in Table 1 below.

<Note> A: C.I. Pigment Blue 15: 6

B: TR-88 (TiO ₂ , average particle size (220 nm), manufactured by Huntsman)

C-1: Shaft joint binder resin (A-1) (Preparation Example 2)

C-2: Acrylic-based alkali-soluble resin (A) (Preparation Example 3)

D: Dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku)

E: Irgacure-907 (manufactured by BASF)

F-1: Propylene glycol monomethyl ether acetate (boiling point 146℃)

F-2: 1,3-butanediol diacetate (boiling point 232℃)

F-3: ethyl 3-ethoxypropionate (boiling point 170℃)

F-4: Propylene glycol diacetate (boiling point 190℃)

Manufacturing of color filters

The color filters were manufactured using the blue photosensitive resin compositions of Examples 1 to 4 and Comparative Examples 1 to 5 respectively. Specifically, each photosensitive resin composition was applied on a glass substrate by spin coating, and the glass substrate was placed on a hot plate and held at 100° C. for 3 minutes to form a thin film.

Subsequently, a test mask with a square transmission pattern of 20 mm (width)×20 mm (length) and a line/space pattern of 1 μm to 100 μm is placed on the film, and then irradiated with ultraviolet light at a distance of 100 μm Photo.

Here, an ultra-high pressure mercury lamp (USH-250D) manufactured by Ushio Electric Co., Ltd. is used as an ultraviolet light source to apply ultraviolet rays in an atmospheric atmosphere at an exposure of 200 mJ/cm 2 (365 nm) Light. No special filters are used.

The film to which ultraviolet light was applied was immersed in a KOH developing aqueous solution having a pH of 10.5 for 80 seconds, thereby performing development. The thin film-coated glass substrate was washed with distilled water, dried with nitrogen, and heated in an oven at 150° C. for 10 minutes, thereby manufacturing a color filter pattern. The thickness of the color pattern thus produced is 5.0 microns.

Test Example 1: Evaluation of vacuum drying stains

The blue photosensitive compositions of Examples 1 to 4 and Comparative Examples 1 to 5 were applied by spin coating to a glass substrate measuring 2 inches by 2 inches (EAGLE XG, Corning (Corning) )), followed by vacuum drying treatment (pressure 65 Pa (Shindo Engineering Lab.)), and then observe whether there is stain on the surface of the coating film.

<Measurement standard of vacuum drying stains>

No smudges: O

Produce smudges: X

Test Example 2: Evaluation of vacuum drying time

The blue photosensitive resin composition of each of Example 1 to Example 4 and Comparative Example 1 to Comparative Example 5 was applied by spin coating on a glass substrate measuring 2 inches by 2 inches (EAGLE XG, manufactured by Corning) ), and then put the coated substrate into a vacuum drying (Shindo Engineering Laboratory) device, and then measure the adhesion time required to reach 65 Pa.

<Measurement standard of vacuum drying time>

Less than 25 seconds: OK, 25 seconds or longer: NG

In the case where the vacuum drying time is 25 seconds or longer, the vacuum drying time (sticking time) increases, thereby reducing the capacity for mass production.

Test Example 3: Evaluation of PMI (Pin Mura Index)

The coated substrate was vacuum dried, and then the color (value) of the portion with needles and the portion without needles was measured.

The PMI is calculated by multiplying the absolute value of the difference value between the color of the flat portion without needles and the color of the needle portion with needles by 1,000.

When the PMI is equal to 3 or lower, the color difference of the needle does not occur in vacuum drying.

PMI=|(color of flat part)-(color of needle part)|×1000

Flat part: The part without needle during vacuum drying.

As is apparent from the results in Table 2, the color filters formed from the blue photosensitive resin compositions in Examples 1 to 4 did not generate vacuum drying stains, and exhibited excellent vacuum drying time and excellent PMI (Needle Color Difference Index).

In comparison, it is apparent from the results in Table 2 that in Comparative Examples 1 to 5, the solvent A having a boiling point of 100°C to 169°C and the solvent B having a boiling point of 170°C to 250°C are not mixed, Then, in Comparative Examples 1 and 5, vacuum drying stains were generated, or in Comparative Examples 2 to 4, although vacuum drying stains did not occur, the vacuum drying time was too slow.

Claims (15)

A blue photosensitive resin composition comprising scattering particles, blue colorant, binder resin including cardo binder resin, photopolymerizable compound, photoinitiator, and solvent, the solvent includes A solvent (A) having a boiling point of 100°C to 169°C, and a solvent (B) having a boiling point of 170°C to 250°C. The blue photosensitive resin composition according to claim 1, wherein the scattering particles include a metal oxide having an average particle diameter of 10 nm to 1000 nm. The blue photosensitive resin composition according to claim 1, wherein the scattering particles include at least one selected from the group consisting of Al ₂ O ₃ , SiO ₂ , ZnO, ZrO ₂ , BaTiO ₃ , TiO ₂ , Ta ₂ O ₅ , Ti ₃ O ₅ , Nb ₂ O ₃ , SnO, and MgO. The blue photosensitive resin composition according to claim 1, further comprising a purple colorant. The blue photosensitive resin composition according to claim 1, further comprising a dye. The blue photosensitive resin composition according to claim 1, wherein the shaft-joint binder resin includes at least one of the compounds represented by the following Chemical Formula 1-1 and Chemical Formula 1-2: [Chemical Formula 1-2] (In Chemical Formula 1-1 and Chemical Formula 1-2, R ₁ , R ₂ , R ₃ and R ₄ are each independently , Where X is a hydrogen atom, a C1-C5 alkyl group, or a hydroxyl group, and R ₅ is a hydrogen atom or a C1-C5 alkyl group). The blue photosensitive resin composition according to claim 1, wherein the shaft-joint binder resin includes at least one selected from the group consisting of 9,9-bis(3-cinnamic acid diester) stilbene, 9 ,9-bis(3-cinnamyl-4-hydroxyphenyl) stilbene, 9,9-bis(glycidyl methacrylate ether) stilbene, 9,9-bis(3,4-dihydroxyphenyl) ) Fusel dicinnamate, 3,6-diglycidyl methacrylate spiro (fusel-9,9-dibenzopiperan (xanthene)), 9,9-bis(3-allyl- 4-hydroxyphenyl) stilbene, 9,9-bis(4-allyloxyphenyl) stilbene, and 9,9-bis(3,4-methacrylic acid diester) stilbene. The blue photosensitive resin composition according to claim 1, wherein the binder resin further contains an acrylic alkali-soluble resin. The blue photosensitive resin composition according to claim 1, wherein the solvent (A) includes at least one selected from the group consisting of propylene glycol monomethyl ether acetate, ethylene glycol monomethyl ether, and ethylene glycol Monoethyl ether, 2-methyl ethyl acetate (methyl cellosolve acetate) and 2-ethyl ethyl acetate (ethyl cellosolve acetate), toluene, xylene and mesitylene, methyl amyl ketone, methyl Isobutyl ketone, cyclohexanone, butanol, hexanol, cyclohexanol, and ethyl 3-ethoxypropionate; and the solvent (B) includes at least one selected from the group: 1,3 -Butanediol diacetate, ethyl 3-ethoxypropionate, propylene glycol diacetate, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol diethyl ether, methoxy acetate Butyl ester, ethylene glycol, and γ-butyrolactone. The blue photosensitive resin composition according to claim 1, based on the total weight of the solid content of the blue photosensitive resin composition, the blue photosensitive resin composition contains 0.1% to 50% by weight of the Isoscatter particles, 0.1% to 50% by weight of the blue colorant, 5% to 85% by weight of the binder resin, 5% to 50% by weight of the photopolymerizable compound, and 0.1% by weight To 20% by weight of the photoinitiator, and based on the total weight of the blue photosensitive resin composition, 60% to 90% by weight of the solvent (A) having a boiling point of 100°C to 169°C and the Solvent (B) with a boiling point of 170°C to 250°C. A color filter including a blue pattern layer formed from the blue photosensitive resin composition according to any one of claims 1 to 10. The color filter according to claim 11, further comprising at least one selected from the group consisting of a red pattern layer and a green pattern layer. The color filter according to claim 12, wherein the red pattern layer or the green pattern layer includes quantum dots. The color filter according to claim 13, wherein the color filter is a self-luminous color filter. An image display device comprising: the color filter according to claim 11; and a light source for emitting blue light.