WO2018080001A1 - Metal oxide photosensitive resin composition, and color filter and image display device manufactured using same - Google Patents

Abstract

The present invention relates to a photosensitive resin composition comprising a blue pattern layer for preventing the deterioration in efficiency according to the viewing angle of blue pixel and reducing the manufacturing cost, and to a color filter and an image display device each comprising the photosensitive resin composition and, more specifically, to a photosensitive resin composition comprising a blue pattern layer comprising scattered particles having an average particle of 30-300 nm and containing a metal oxide without containing quantum dots, and to a color filter and an image display device each comprising the photosensitive resin composition.

Description

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

The present invention relates to a metal oxide photosensitive resin composition comprising specific scattering particles, a color filter and an image display device manufactured using the same.

The color filter is a thin film type optical component that extracts three colors of red, green, and blue from white light and makes them possible in fine pixel units. The size of one pixel is about tens to hundreds of micrometers. Such a color filter includes a black matrix layer formed in a predetermined pattern on a transparent substrate to shield the boundary between each pixel, and a plurality of colors (typically red (R), green (G) and The pixel units in which the three primary colors of blue (B) are arranged in a predetermined order are stacked in this order.

Recently, as one of the methods of implementing a color filter, a pigment dispersion method using a pigment-dispersible photosensitive resin has been applied, but a part of the light is absorbed by the color filter while the light emitted from the light source passes through the color filter. The problem is that the efficiency is lowered and the color reproduction is lowered 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 required. A color filter manufacturing method using a self-luminous photosensitive resin composition is proposed.

Republic of Korea Patent Publication No. 2013-0000506 relates to a display device, a plurality of wavelength conversion particles for converting the wavelength of light; And a color converter including a plurality of color filter particles that absorb light having a predetermined wavelength in the light.

However, in the case of a color filter including a quantum dot, the efficiency of the color filter may be somewhat degraded as the efficiency of the quantum dot, in particular, the blue quantum dot is reduced, and in the case of the blue quantum dot, there is a problem that the overall manufacturing cost increases. .

On the other hand, in the case of forming a blue pixel using a conventional blue photosensitive resin composition in a color filter including red and green quantum dots, the emission intensity and color purity at the front is excellent, but the emission intensity at the side is reduced. There is a problem of lowering the luminance and lowering the color purity of the color filter.

Therefore, development of the photosensitive resin composition which can prevent the fall of the efficiency of a blue pixel, and can lower manufacturing cost is calculated | required.

[Preceding technical literature]

[Patent Documents]

(Patent Document 1) Republic of Korea Patent Publication No. 2013-0000506 (2013.01.03.)

An object of this invention is to provide the metal oxide photosensitive resin composition which can prevent the efficiency fall with the viewing angle of a blue pixel, and can lower manufacturing cost.

In addition, the present invention is to provide a color filter comprising a blue pattern layer prepared using the above-described metal oxide photosensitive resin composition.

In addition, the present invention is a color filter described above; And a light source for emitting blue light.

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention for achieving the above object comprises a metal oxide scattering particles having an average particle diameter of 30 to 300nm, characterized in that it does not include a quantum dot.

In addition, the present invention provides a color filter comprising a blue pattern layer containing a cured product of the metal oxide photosensitive resin composition for forming a blue pattern layer described above.

In addition, the present invention is a color filter described above; And a light source emitting blue light.

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention does not include a quantum dot, and includes specific scattering particles, thereby reducing the manufacturing cost, and has an advantage in that a color filter having an excellent viewing angle can be manufactured.

In addition, the color filter and the image display device made of the metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention includes a light source for emitting specific scattering particles and blue light instead of blue quantum dots, thereby providing excellent color reproduction characteristics and high light efficiency. As a result, high quality image quality can be realized and manufacturing cost is low.

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

In the present invention, when a member is located "on" another member, this includes not only when one member is in contact with another member but also when another member exists between the two members.

In the present invention, when a part "includes" a certain component, this means that it may further include other components, without excluding the other components unless otherwise stated.

<Metal oxide photosensitive resin composition for forming a blue pattern layer>

One aspect of the present invention relates to a metal oxide photosensitive resin composition for forming a blue pattern layer, which includes a scattering particle containing a metal oxide having an average particle diameter of 30 to 300 nm.

Specifically, the metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention includes scattering particles containing a metal oxide having an average particle diameter of 30 to 300 nm, thereby acting as a light source for emitting blue light without including blue quantum dots. It is possible to manufacture a pattern layer that can serve as a blue pixel.

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention may further include a photopolymerizable compound, a photopolymerization initiator, a binder resin, a solvent, or an additive in addition to the scattering particles, except for quantum dots, but is not limited thereto. .

Scattering particles

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention includes scattering particles containing a metal oxide having an average particle diameter of 30 to 300 nm.

In one 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, Yb, Ti It may include one or more oxides selected from the group consisting of, Sb, Sn, Zr, Nb, Ce, Ta, In and combinations thereof.

In 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 It may include one or more selected from the group consisting of -Al, Nb ₂ O ₃ , SnO, MgO and combinations thereof, and a material surface-treated with a compound having an unsaturated bond such as acrylate may be used if necessary. .

The scattering particles limit the content in the average particle diameter and the total composition to maximize the light emission intensity of the color filter.

In the present invention, the "average particle diameter" may be a number average particle diameter, and can be obtained from an image observed by, for example, a field emission runner electron microscope (FE-SEM) or a transmission electron microscope (TEM). Specifically, several samples can be extracted from the observed images of FE-SEM or TEM, and the diameters of these samples can be measured to obtain arithmetic mean values.

Since the metal oxide has an average particle diameter of 30 to 300 nm, and in this case, the scattering effect is increased, even if the photosensitive resin composition including the scattering particles does not include blue quantum dots, the metal oxide may serve as a blue pixel by a blue light source. desirable.

When the average particle diameter of the metal oxide is less than the above range, the scattering effect may be slightly lowered, and thus it may be difficult to play a role of a blue pixel. When the above average range, the scattering particles fall into the photosensitive resin composition for forming a blue pattern layer. It may be difficult to obtain a pattern layer surface having a uniform quality due to the phenomenon of sitting, it is preferable to use it properly adjusted within the above range.

In another embodiment of the present invention, the scattering particles may be included in an amount of typically 0.1 to 50 parts by weight, preferably 1 to 30 parts by weight, based on 100 parts by weight of the total metal oxide photosensitive resin composition. Preferably it may be included in 2 to 20 parts by weight. When the scattering particles are included in the above range, it is possible to manufacture a color filter having an excellent emission intensity in the range of -60 ° to + 60 ° based on a front field of view of 0 °.

When the scattering particles are included in less than the above range, the light emission intensity at the front viewing angle is excellent, but it may be difficult to secure the desired emission intensity at the left and right sides, and when the scattering particles exceed the above range, Since the effect of increasing the luminescence intensity is insignificant and the problem of deterioration in stability of the metal oxide photosensitive resin composition may occur, it is preferable to use it properly within the above range.

In another embodiment of the present invention, the metal oxide photosensitive resin composition for forming a blue pattern layer may further include at least one selected from the group consisting of a blue colorant, a binder resin, a photopolymerizable compound, a photopolymerization initiator, and a solvent. .

Blue colorant

The blue photosensitive resin composition of this invention may further contain a blue coloring agent. When the blue photosensitive resin composition according to the present invention further comprises a blue colorant, the light of the light source reflected by the scattering particles may be prevented from being reflected back by external light such as sunlight to realize high quality image quality. There is this.

The blue colorant may specifically include a blue pigment, and the blue pigment may specifically include a compound classified as a pigment in the color index (published by The society of Dyers and Colourists). Although the pigment of the same color index (CI) number is mentioned, It is not necessarily limited to these.

In another embodiment of the present invention, the blue colorant is C.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 a combination thereof; may include.

Among these, C.I. Pigment Blue 15: 3, C.I. Pigment Blue 15: 4, Pigment Blue 15: 6, C.I. It is preferable to include at least one member selected from the group consisting of Pigment Blue 16 in view of the effect of suppressing external light reflection and high color reproducibility.

In 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 is not limited thereto, for example, C.I. Pigment violet 1, 14, 19, 23, 29, 32, 33, 36, 37, 38, and combinations thereof, and at least one selected from the group consisting of C.I. It is preferable to use pigment violet 23 in view of realizing high color reproducibility even through a small colorant content.

The dye may include a compound classified as a dye in the color index (Published by The Society of Dyers and Colourists) or a known blue or purple dye described in a dye note (color dyed yarn).

For example, C.I. As solvent dyes,

C.I. Solvent blue 5, 35, 36, 37, 44, 45, 59, 67 and 70; And

C.I. Solvent violet 8, 9, 13, 14, 36, 37, 47 and 49; and the like.

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

In addition, C.I. As an acid dye,

CI 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. acid violet 6B, 7, 9, 17, 19, 66, etc. are mentioned.

Among them, C.I. Acid blue 80 and 90; And C.I. It is preferred to include at least one member selected from the group consisting of acid violet 66.

In addition, C.I. As a direct dye,

CI 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; And

C.I. direct violet 47, 52, 54, 59, 60, 65, 66, 79, 80, 81, 82, 84, 89, 90, 93, 95, 96, 103, 104 and the like.

In addition, C.I. As a modanto dye,

CI Modanto 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. modanto violet 1, 2, 4, 5, 7, 14, 22, 24, 30, 31, 32, 37, 40, 41, 44, 45, 47, 48, 53, 58 and the like.

The said dye can be used individually or in combination of 2 or more types, respectively.

In 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, more preferably to 100 parts by weight of the total amount of the metal oxide photosensitive resin composition for forming the blue pattern layer. It may be included in 1 to 20 parts by weight.

When the content of the blue colorant is less than the above range, it may be difficult to secure the external light reflection suppression effect to be obtained, on the contrary, when the content exceeds the above range, the increase in luminescence intensity may be slightly lowered, and the problem of lowering the viscosity stability of the composition may occur. Since it arises, it uses suitably within the said range.

Binder resin

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention may include a binder resin.

The binder resin usually has reactivity and alkali solubility due to the action of light or heat, and may act as a dispersion medium of scattering particles. The binder resin contained in the metal oxide photosensitive resin composition according to the present invention acts as a binder resin for scattering particles, and is not limited as long as it is a binder resin soluble in an alkaline developer used in a developing step for producing a color filter. It is possible.

Examples of the binder resin include carboxyl group-containing monomers and copolymers with other monomers copolymerizable with this monomer.

As said carboxyl group-containing monomer, For example, unsaturated monocarboxylic acid, unsaturated carboxylic acid, such as unsaturated polyhydric carboxylic acid which has one or more carboxyl groups in molecules, such as unsaturated dicarboxylic acid and unsaturated tricarboxylic acid, etc. are mentioned. I can lift it. Here, as unsaturated monocarboxylic acid, acrylic acid, methacrylic acid, crotonic acid, (alpha)-chloroacrylic acid, cinnamic acid etc. are mentioned, for example. As unsaturated dicarboxylic acid, a maleic acid, a fumaric acid, itaconic acid, a citraconic acid, a mesaconic acid, etc. are mentioned, for example. The unsaturated polyhydric carboxylic acid may be an acid anhydride, and specific examples thereof include maleic anhydride, itaconic anhydride and citraconic anhydride. In addition, the unsaturated polyhydric carboxylic acid may be mono (2-methacryloyloxyalkyl) ester thereof, for example, succinic acid mono (2-acryloyloxyethyl), succinic acid mono (2-methacryloyloxyethyl ), Mono (2-acryloyloxyethyl) phthalate, mono (2-methacryloyloxyethyl) phthalate, etc. are mentioned. The unsaturated polyhydric carboxylic acid may be mono (meth) acrylate of the sock end dicarboxy polymer, and examples thereof include? -Carboxypolycaprolactone monoacrylate and? -Carboxypolycaprolactone monomethacrylate. .

These carboxyl group-containing monomers can be used individually or in mixture of 2 or more types, respectively. As another monomer copolymerizable with the said carboxyl group-containing monomer, For example, styrene, (alpha) -methylstyrene, o-vinyl toluene, m-vinyl toluene, p-vinyl toluene, p-chloro styrene, o-methoxy styrene, m-meth Oxy styrene, p-methoxy styrene, o-vinyl benzyl methyl ether, m-vinyl benzyl methyl ether, p-vinyl benzyl methyl ether, o-vinyl benzyl glycidyl ether, m-vinyl benzyl glycidyl ether, p- Aromatic vinyl compounds such as vinyl benzyl glycidyl ether and indene; Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-propyl acrylate, n-propyl methacrylate, i-propyl acrylate, i-propyl methacrylate, 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-hydroxy Ethyl acrylate, 2-hydroxyethyl methacrylate, 2-hydroxypropyl acrylate, 2-hydroxypropyl methacrylate, 3-hydroxypropyl acrylate, 3-hydroxypropyl methacrylate, 2-hydroxy Hydroxybutyl acrylate, 2-hydroxybutyl methacrylate, 3-hydroxybutyl acrylate, 3-hydroxybutyl methacrylate, 4-hydroxybutyl acrylate, 4-hydroxybutyl methacrylate, allyl Relate, 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 meth Methacrylate, methoxy propylene glycol acrylate, methoxy propylene glycol methacrylate, methoxy dipropylene glycol acrylate, methoxy dipropylene glycol methacrylate, isobornyl acrylate, isobornyl methacrylate, dicyclopentadier Nyl acrylate, dicyclopentadiethyl methacrylate, adamantyl (meth) a Relate, norbornyl (meth) acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-hydroxy-3-phenoxypropyl methacrylate, glycerol monoacrylate, glycerol monomethacrylate, etc. Unsaturated carboxylic acid esters; 2-aminoethyl acrylate, 2-aminoethyl methacrylate, 2-dimethylaminoethyl acrylate, 2-dimethylaminoethyl methacrylate, 2-aminopropyl acrylate, 2-aminopropyl methacrylate, 2-dimethyl Unsaturated carboxyl such as aminopropyl acrylate, 2-dimethylaminopropyl methacrylate, 3-aminopropyl acrylate, 3-aminopropyl methacrylate, 3-dimethylaminopropyl acrylate and 3-dimethylaminopropyl methacrylate Acid aminoalkyl esters; Unsaturated carboxylic acid glycidyl esters such as glycidyl acrylate 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 ethyl ether and allyl glycidyl ether; Vinyl cyanide compounds such as acrylonitrile, methacrylonitrile, α-chloroacrylonitrile and vinylidene cyanide; Unsaturated amides such as acrylamide, methacrylamide, α-chloroacrylamide, N-2-hydroxyethylacrylamide and N-2-hydroxyethyl methacrylamide; Maleimide, benzylmaleimide, N-phenylmaleimide. Unsaturated imides such as N-cyclohexylmaleimide; Aliphatic conjugated dienes such as 1,3-butadiene, isoprene and chloroprene; And monoacryloyl or monomethacryloyl groups at the terminal of the polymer molecular chain of polystyrene, polymethylacrylate, polymethylmethacrylate, poly-n-butylacrylate, poly-n-butylmethacrylate, polysiloxane. And macromonomers to have.

These monomers can be used individually or in mixture of 2 or more types, respectively. In particular, bulky monomers such as monomers having a norbornyl skeleton, monomers having an adamantane skeleton, and monomers having a rosin skeleton as the other monomers copolymerizable with the carboxyl group-containing monomer are preferable because they tend to lower the dielectric constant. .

It is preferable to use the binder resin having an acid value in the range of 20 to 200 (KOH mg / g). When the acid value satisfies the above range, the solubility in the developing solution is improved, so that the non-exposed part is easily dissolved and the sensitivity is increased, and as a result, the pattern of the exposed part remains at the time of development to improve the film remaining ratio. The acid value is a value measured as the amount (mg) of potassium hydroxide required to neutralize 1 g of the acrylic polymer, and can be determined by titration using an aqueous potassium hydroxide solution.

In addition, the polystyrene reduced weight average molecular weight (hereinafter, simply referred to as 'weight average molecular weight') measured by gel permeation chromatography (GPC; using tetrahydrofuran as an eluting solvent) is 3,000 to 200,000, preferably 5,000 to 100,000. Binder resins are preferred. When the said molecular weight is in the said range, the hardness of a blue pattern layer improves, it is preferable because a residual film rate is high, the solubility of the non-exposed part in a developing solution is excellent, and the resolution tends to improve.

It is preferable that it is 1.5-6.0, and, as for the molecular weight distribution [weight average molecular weight (Mw) / number average molecular weight (Mn)] of the said binder resin, it is more preferable that it is 1.8-4.0. Since the developability is excellent when the said molecular weight distribution is in the said range, there exists a preferable advantage.

The binder resin may be 5 to 85 parts by weight, preferably 10 to 70 parts by weight, more preferably 20 to 60 parts by weight, based on 100 parts by weight of the total solids of the metal oxide photosensitive resin composition. It is preferable because the solubility is sufficient, the occurrence of developing residue on the substrate of the non-pixel portion is suppressed, and the film reduction of the pixel portion of the exposed portion hardly occurs at the time of development, and the omission of the non-pixel portion tends to be good. When the binder resin is included in less than the above range, the action of the binder resin on the scattering particles may be somewhat insignificant, and when the binder resin is included in the above range, the solubility in the developing solution may be relatively reduced so that the pattern Formation can be somewhat difficult.

Photopolymerizable  compound

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention may include a photopolymerizable compound.

The said photopolymerizable compound is a compound which can superpose | polymerize by the action | action of light and the photoinitiator mentioned later, A monofunctional monomer, a bifunctional monomer, another polyfunctional monomer, etc. are mentioned. Specific examples of the monofunctional monomers include nonylphenylcarbitol acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 2-ethylhexylcarbitol acrylate, 2-hydroxyethyl acrylate and N-vinylpyrroli Money, etc.

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, Bis (acryloyloxyethyl) ether of bisphenol A, 3-methylpentanediol di (meth) acrylate, etc. are mentioned.

Specific examples of other polyfunctional monomers include trimethylolpropane tri (meth) acrylate, pentaerythritol tri (meth) acrylate, pentaerythritol tetra (meth) acrylate, dipentaerythritol penta (meth) acrylate, di Pentaerythritol hexa (meth) acrylate etc. are mentioned. Of these, bifunctional or higher polyfunctional monomers are preferably used.

The photopolymerizable compound may be included in an amount of 5 to 50 parts by weight, preferably 7 to 45 parts by weight, and 10 to 20 parts by weight based on 100 parts by weight of the total solids of the metal oxide photosensitive resin composition. When the photopolymerizable compound satisfies the above range, the intensity and smoothness of the pixel portion tend to be good, which is preferable. When the photopolymerizable compound is included in the range below, the intensity of the pixel portion may be lowered slightly, and when the photopolymerizable compound is included in the above range, smoothness may be slightly lowered, so it is preferably included within the range. .

Photopolymerization Initiator

The metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention may include a photopolymerization initiator. The photopolymerization initiator preferably contains an acetophenone compound, and the acetophenone compound may be, for example, diethoxyacetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, and benzyldimethyl ketal. , 2-hydroxy-1- [4- (2-hydroxyethoxy) phenyl] -2-methylpropan-1-one, 1-hydroxycyclohexylphenylketone, 2-methyl-1- (4-methyl Thiophenyl) -2-morpholinopropane-1-one, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one, 2-hydroxy-2-methyl [4 Oligomers of-(1-methylvinyl) phenyl] propane-1-one, and the like, and preferably 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) butan-1-one and the like. Can be mentioned.

Moreover, photoinitiators other than the said acetophenone series can be used in combination. Photopolymerization initiators other than the acetophenone series include active radical generators, sensitizers, and acid generators that generate active radicals by irradiation with light.

As said active radical generating agent, a benzoin type compound, a benzophenone type compound, a thioxanthone type compound, a triazine type compound, etc. are mentioned, for example. As a benzoin type compound, benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoisobutyl ether, etc. are mentioned, for example. As a benzophenone type compound, for example, benzophenone, methyl o-benzoyl benzoate, 4-phenylzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3 ', 4,4'- tetra ( t-butylperoxycarbonyl) benzophenone, 2,4,6-trimethylbenzophenone, etc. are mentioned. As a thioxanthone type compound, 2-isopropyl thioxanthone, 4-isopropyl thioxanthone, 2, 4- diethyl thioxanthone, 2, 4- dichloro thioxanthone, 1-chloro-, for example 4-propoxy city oxanthone etc. are mentioned. As a triazine type compound, 2, 4-bis (trichloromethyl) -6- (4-methoxyphenyl) -1, 3, 5- triazine, 2, 4-bis (trichloromethyl), for example -6- (4-methoxynaphthyl) -1,3,5-triazine, 2,4-bis (trichloromethyl) -6- (4-methoxystyryl) -1,3,5-tri Azine, 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) -6- [2- (3,4dimethoxyphenyl) ethenyl] -1,3,5 -Triazine and the like.

Examples of the active radical generator include 2,4,6-trimethylbenzoyldiphenylphosphine oxide, 2,2, -bis (o-chlorophenyl) -4,4 ', 5,5'-tetra Phenyl-1,2'-biimidazole, 10-butyl-2-chloroacridone, 2-ethylanthraquinone, benzyl, 9,10-phenanthrenequinone, camphorquinone, methyl phenylglyoxylate, titanocene Compounds and the like can be used. Examples of the acid generator include 4-hydroxyphenyldimethylsulfonium p-toluenesulfonate, 4-hydroxyphenyldimethylsulfonium hexafluoroantimonate and 4-acetoxyphenyldimethylsulfonium p-toluenesulfo. Acetate, 4-acetoxyphenylmethylbenzylsulfonium hexafluoroantimonate, triphenylsulfonium p-toluenesulfonate, triphenylsulfonium hexafluoroantimonate, diphenyliodonium p-toluenesulfonate, Onium salts, such as diphenyl iodonium hexafluoro antimonate, nitrobenzyl tosylate, benzoin tosylate, etc. are mentioned.

In addition, there are some compounds which generate an acid simultaneously with the active radicals in the compound as an active radical generator, for example, a triazine photopolymerization initiator is also used as an acid generator.

The photopolymerization initiator is usually 0.1 to 40 parts by weight, preferably 1 to 30 parts by weight, more preferably 10 to 25 parts by weight based on the total amount of the binder resin and the photopolymerizable compound.

When it exists in the said range, since a metal oxide photosensitive resin composition becomes highly sensitive and the intensity | strength of the pixel part formed using this composition and the smoothness in the surface of this pixel part tend to become favorable, it is preferable.

Furthermore, in this invention, photoinitiator start adjuvant can be used. A photoinitiator adjuvant may be used in combination with a photoinitiator, and is a compound used in order to accelerate superposition | polymerization of the photopolymerizable compound in which superposition | polymerization was started by a photoinitiator. As photopolymerization start adjuvant, an amine compound, an alkoxy anthracene type compound, a thioxanthone type compound, etc. are mentioned.

 Examples of the amine compound include triethanolamine, methyl diethanolamine, triisopropanolamine, methyl 4-dimethylaminobenzoate, ethyl 4-dimethylaminobenzoate, isoamyl 4-dimethylaminobenzoate, and 2-dimethylamino benzoic acid. Ethyl, 2-ethylhexyl 4-dimethylaminobenzoic acid, N, N-dimethylparatoluidine, 4,4'-bis (dimethylamino) benzphenone (commonly known as Michler's ketone), 4,4'-bis (diethyl Amino) benzophenone, 4, 4'-bis (ethylmethylamino) benzophenone, etc. are mentioned, Among these, 4,4'-bis (diethylamino) benzophenone is preferable. As an alkoxy anthracene type compound, 9,10- dimethoxy anthracene, 2-ethyl-9,10- dimethoxy anthracene, 9,10- diethoxy anthracene, 2-ethyl-9, 10- diethoxy anthracene, for example. Etc. can be mentioned. As a thioxanthone type compound, 2-isopropyl thioxanthone, 4-isopropyl thioxanthone, 2, 4- diethyl thioxanthone, 2, 4- dichloro thioxanthone, 1-chloro- 4-propoxy city oxanthone etc. are mentioned.

Such photopolymerization start adjuvant can be used alone or in combination of a plurality thereof. In addition, a commercially available thing can be used as a photoinitiator starter, As a commercially available photoinitiator starter, brand name "EAB-F" [manufacturer: Hodogaya Chemical Co., Ltd.] etc. are mentioned, for example.

In the case of using the photopolymerization initiation assistant, the photopolymerization initiation assistant may be used in an amount of usually 10 mol or less, preferably 0.01 to 5 mol, per mol of the photopolymerization initiator. When the photopolymerization initiation aid is included in the above range, the sensitivity of the metal oxide photosensitive resin composition may be further increased, and the productivity of the color filter formed of the metal oxide photosensitive resin composition may be improved.

solvent

The solvent that can be included in the metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention is not particularly limited, and various organic solvents commonly used in the field of the photosensitive resin composition may be used.

For example, ethylene glycol monoalkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol Diethylene glycol dialkyl ethers such as dipropyl ether and diethylene glycol dibutyl ether, ethylene glycol alkyl ether acetates such as methyl cellosolve acetate and ethyl cellosolve acetate, propylene glycol monomethyl ether acetate, and propylene glycol mono Alkylene glycol alkyl ether acetates, such as ethyl ether acetate, a propylene glycol monopropyl ether acetate, a methoxy butyl acetate, and a methoxy pentyl acetate, aromatic hydrocarbons, such as benzene, toluene, xylene, and mesitylene, methyl ethyl ketone, acetone, Methylamyl Ketones such as tonnes, methyl isobutyl ketone, cyclohexanone, alcohols such as ethanol, propanol, butanol, hexanol, cyclohexanol, ethylene glycol, glycerin, ethyl 3-ethoxypropionate, methyl 3-methoxypropionate, etc. And cyclic esters such as γ-butyrolactone.

Among the above solvents, organic solvents having a boiling point of 100 ° C. to 250 ° C. are preferably used in the above solvents in terms of applicability and drying properties, and more preferably alkylene glycol alkyl ether acetates, ketones, and 3-ethoxy. Ester, such as ethyl propionate and the methyl 3-methoxy propionate, is mentioned, More preferably, propylene glycol monomethyl ether acetate, a propylene glycol monoethyl ether acetate, cyclohexanone, 3-ethoxy propionate, 3- Methyl methoxy propionate etc. are mentioned. These solvents may be used alone or in combination of two or more, but is not limited thereto.

In another embodiment of this invention, the said solvent can contain the solvent (A) whose boiling point is 100-169 degreeC, and the solvent (B) whose boiling point is 170-250 degreeC.

When the metal oxide photosensitive resin composition according to the present invention comprises a solvent (A) having a temperature of 100 to 169 ° C. and a solvent (B) having a boiling point of 170 to 250 ° C., the flow characteristics are excellent, and VD stains, pin smears and pinmura It does not occur, there is no change in the light emission intensity, there is an advantage that can provide a color filter with improved display defects.

The solvent (A) having a boiling point of 100 to 169 ° C. may include one or more selected from the group consisting of ethers, aromatic hydrocarbons, ketones, alcohols, esters, amides, and the like, specifically propylene glycol mono Methyl ether acetate, ethylene glycol monomethyl ether (about 124 to 125 ° C.), ethylene glycol monoethyl ether (about 135.6 ° C.), methyl cellosolve acetate (about 145 ° C.), ethyl cellosolve acetate (about 156 ° C.), Toluene (about 110.6 ° C), xylene (about 138.4 ° C), mesitylene (about 164.7 ° C), methylamylketone (about 151 ° C), methylisobutylketone (about 116.1 ° C), cyclohexanone (about 155.6 ° C), Butanol (about 117.7 ° C.), hexanol (about 157 ° C.), cyclohexanol (about 161.8 ° C.), ethyl 3-ethoxypropionate (about 166 ° C.), and the like.

Solvent (B) having a boiling point of 170 to 250 ° C. may include one or more selected from the group consisting of ethers, aromatic hydrocarbons, ketones, alcohols, esters, amides, and the like, specifically 1,3 Butylene glycol diacetate, ethyl-3-ethoxypropionate, propylene glycol diacetate, ethylene glycol monopropyl ether (about 150-152 ° C.), ethylene glycol monobutyl ether (about 171 ° C.), diethylene glycol di It may be at least one selected from the group consisting of ethyl ether (about 189 ° C.), methoxybutyl acetate (about 172 ° C.), ethylene glycol (about 197.3 ° C.), γ-butyrolactone (about 204 ° C.), and the like.

The solvent may be included in an amount of 60 to 90 parts by weight, preferably 70 to 85 parts by weight, based on 100 parts by weight of the metal oxide photosensitive resin composition. When the solvent is included in the above range, the coating property tends to be good when applied with a coating device such as a roll coater, spin coater, slit and spin coater, slit coater (sometimes referred to as die coater), inkjet, etc. desirable. When the content of the solvent is less than the above range, the process may become somewhat difficult as the applicability decreases slightly. When the solvent content exceeds the above range, a color filter formed of the metal oxide photosensitive resin composition, specifically, the metal oxide photosensitive resin Problems may occur in which the performance of the blue pixel formed of the composition may be somewhat degraded.

additive

The blue pattern layer metal oxide photosensitive resin composition according to the present invention may be a filler, another polymer compound, or a pigment dispersant as necessary. Additives, such as an adhesion promoter, antioxidant, a ultraviolet absorber, and an aggregation inhibitor, can be further included.

Specifically, the additive according to the present invention may further include one or more selected from the group consisting of UV absorbers, antioxidants and thermosetting agents.

The UV absorber may not only control the size of the pattern, but may also provide an effect of increasing quantum efficiency by preventing yellowing generated during a high temperature process.

In general, the UV absorber is known to be used when the CD bias of the photosensitive resin composition is increased to realize a fine pattern. In this case, the CD means an embossed portion of the pattern, and the CD bias means a degree in which a pattern size formed is larger than a mask pattern to be implemented. When the UV absorber is added, the CD bias due to diffraction can be reduced by partially absorbing UV, thereby realizing a desired pattern.

The UV absorber according to the present invention may include at least one of benzotriazole-based, triazine-based and benzophenone-based UV absorbers.

As a benzotriazole type UV absorber, a well-known compound can be used. Specifically, octyl 3- [3-tert-butyl-4-hydroxy-5- (5-chloro-2H-benzotriazol-2-yl) phenyl] propionate, 2-ethylhexyl 3- (3 -tert-butyl-4-hydroxy-5- (5-chloro-2H-benzotriazol-2-yl) phenyl) propionate, [3- [3- (2H-benzotriazol-2-yl) -5- (1,1-methylethyl) -4-hydroxyphenyl] -1-oxopropyl] -w- [3- [3- (2H-benzotriazol-2-yl) -5- (1, 1-dimethylethyl) -4-hydroxyphenyl] -1-oxopropoxy] poly (oxy-1,2-ethanediyl), (3- (3- (2H-benzotriazol-2-yl)- 5- (1,1-dimethylethyl) -4-hydroxyphenyl) -1-oxopropyl) -hydroxypoly (oxo-1,2-ethanediyl), 2- (3-tert-butyl-2- Hydroxy-5-methylphenyl) -5-chloro-2H-benzotriazole, 2- (2H-benzotriazol-2-yl) -4,6-dipentpentylphenol, 3- (2H-benzotriazolyl) -5- (1,1-dimethylethyl) -4-hydroxy-benzine propionic acid octyl ester, 2- (2H-benzotriazol-2-yl) -4,6-bis (1-methyl-1-phenylethyl ) Phenol, 2- (2H-benzotriazole-2- ) This phenol is preferred 6- (1-methyl-1-phenylethyl) -4- (1,1,3,3-tetramethylbutyl).

As a triazine UV absorber, a well-known compound can be used. Specifically, 2- (4,6-dimethyl-1,3,5-triazin-2-yl) -5-((hexyl) oxy) -phenol, 2- (4- (2-hydroxy-3 -Tridecyloxypropyl) oxy) -2-hydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- (4- (2-hydroxy- 3-didecyloxypropyl) oxy) -2-hydroxyphenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2- (2-hydroxy-4- (3- (2-ethylhexyl-1-oxy) -2-hydroxypropyloxy) phenyl) -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2,2 '-[6- (2,4-dibutoxyphenyl) -1,3,5-triazine-2,4-diyl] bis (5-butoxyphenol), 6-methylheptyl 2- {4- [4,6-di (4-biphenylyl) -1,3,5-triazin-2-yl] -3-hydroxyphenoxy} propanoate and the like.

As a benzophenone type UV absorber, a well-known compound can be used. Specifically, 2-hydroxy-4-n-octyloxybenzophenone, 2-hydroxy-4-methoxy benzophenone, etc. are mentioned.

The content of the UV absorber is preferably included in 0.001 to 10 parts by weight, preferably 0.025 to 7 parts by weight based on 100 parts by weight of the total solid content of the metal oxide photosensitive resin composition for forming a blue pattern layer. When the content of the UV absorber is within the above range, the effect of the absorbent may be improved, and the pattern may be well formed without disturbing the action of the photopolymerization initiator.

Antioxidant used in the present invention is excellent in the radical trapping effect generated by heat at the time of post-baking can be expected a sufficient effect even when used in a small amount.

The antioxidant is at least one selected from phosphorus antioxidants, sulfur antioxidants and phenolic antioxidants.

There is a possibility of causing yellowing by the baking process performed in the manufacturing process by radicals generated in the photopolymerization initiator. At least one or more oxidations selected from phosphorus, sulfur and phenol antioxidants by combining at least one or more antioxidants selected from phosphorus, sulfur and phenolic antioxidants with the photopolymerization initiator The inhibitor can suppress yellowing generation due to the photopolymerization initiator by using an antioxidant. Also taper and straightness can be excellent.

The antioxidant may include one or more selected from the group consisting of phenolic compounds, phosphorus compounds and sulfur compounds, and these may be phenol-phosphorus compounds, phenol-sulfur compounds, phosphorus-sulfur compounds, or phenol-phosphorus compounds -Can be used in combination with sulfur compounds.

The kind of the phenolic antioxidant is not particularly limited, but specific examples thereof include 3,9-bis [2- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy]- 1,1-dimethylethoxy] -2,4,8,10-tetraoxaspiro [5.5] undecane, pentaerythritol tetrakis [3- (3,5-di-t-butyl-4-hydride Hydroxyphenyl) propionate], 1,3,5, -trimethyl-2,4,6, -tris (3'5'-di-t-butyl-4-hydroxybenzyl) benzene, triethylene glycol-bis [3- (3-t-butyl-5-methyl-4-hydroxyphenyl) propionate], 4,4'-thiobis (6-t-butyl-3-methylphenol), tris- (3, 5-di-t-butyl-4-hydroxybenzyl) -isocyanurate, 1,3,5-tris (4-t-butyl-3-hydroxy-2,6-dimethylbenzyl) -isocyanurate , 1,6-hexanediol-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], 2,2-thio-diethylenebis [3- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate], N, N'-hexamethylenebis (3,5-di-t-butyl-4-hydrate Cy-hydrocinnamamide), 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene, 2,4-bis [(octylthio ) Methyl] -O-cresol, 1,6-hexanediol-bis- [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], octadecyl 3- (3,5 -Di-tert-butyl-4-hydroxyphenol) propionate, 2,2'-methylenebis (4-methyl-6-t-butylphenol), 4,4'-butylidene-bis (3- Methyl-6-t-butylphenol), 1,1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane, 1,3,5-tris (4-hydroxybenzyl) Benzene and tetrakis [methylene-3- (3,5'-di-t-butyl-4'-hydroxyphenylpropionate)] methane and the like.

3,9-bis [2- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propionyloxy] -1,1- in terms of heat resistance and heat discoloration prevention among the phenolic antioxidants Dimethylethoxy] -2,4,8,10-tetraoxaspiro [5.5] undecane, 1,3,5, -trimethyl-2,4,6, -tris (3'5'-di-t- Butyl-4-hydroxybenzyl) benzene, pentaerythritol tetrakis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], triethylene glycol-bis [3- (3-t-butyl-5-methyl-4-hydroxyphenyl) propionate], 4,4'-thiobis (6-t-butyl-3-methylphenol), tris- (3,5-di -t-butyl-4-hydroxybenzyl) -isocyanurate, 1,3,5-tris (4-t-butyl-3-hydroxy-2,6-dimethylbenzyl) -isocyanurate, 1 , 6-hexanediol-bis [3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate], 2,2-thio-diethylenebis [3- (3,5-di -t-butyl-4-hydroxyphenyl) propionate], N, N'-hexamethylenebis (3,5-di-t-butyl-4-hydroxy-hydro Southamide), 1,3,5-trimethyl-2,4,6-tris (3,5-di-t-butyl-4-hydroxybenzyl) benzene and 2,4-bis [(octylthio) methyl] -O-cresol is preferred.

As a commercial item, Irganox 1010 (made by BASF), Sumilizer BBM-S (made by Sumitomo Chemical), ADK STAB AO-80 (made by ADEKA), Sumilizer GP (made by Sumitomo Chemical), Irganox 1035 (made by BASF), etc. are mentioned.

The kind of the phosphorus antioxidant is not particularly limited, but specific examples thereof include 3,9-bis (2,6-di-tert-butyl-4-methylphenoxy) -2,4,8,10-tetraoxa -3,9-diphosphaspiro [5.5] undecane, diisodecylpentaerythritoldiphosphite, bis (2,4-di-t-butylphenyl) pentaerythritoldiphosphite, 2,2'-methylenebis ( 4,6-di-t-butyl-1-phenyloxy) (2-ethylhexyloxy) phosphorus, 6- [3- (3-t-butyl-4-hydroxy-5-methylphenyl) propoxy] -2,4,8,10-tetra-t-butyldibenz [d, f] [1,3,2] dioxaphosphine, triphenylphosphite, diphenylisodecylphosphite, phenyldiisodecylphosphate Fight, 4,4'-Butylidene-bis (3-methyl-6-t-butylphenylditridecyl) phosphite, octadecylphosphite, tris (nonylphenyl) phosphite, 9,10-dihydro- 9-oxa-10-phosphaphenanthrene-10-oxide, 10- (3,5-di-t-butyl-4-hydroxybenzyl) -9,10-dihydro-9-oxa-10-phosphapé Nanthrene-10-jade Id, 10-decyloxy-9,10-dihydro-9-oxa-10-phosphazanthrene-10-oxide, tris (2,4-di-t-butylphenyl) phosphite, cyclic neopentane Tetraylbis (2,4-di-t-butylphenyl) phosphite, cyclic neopentanetetraylbis (2,6-di-t-butylphenyl) phosphite, 2,2-methylenebis (4,6 -Di-t-butylphenyl) octylphosphite, tris (2,4-di-t-butylphenyl) phosphite, tetrakis (2,4-di-t-butylphenyl) [1,1-biphenyl] -4,4 'diyl bisphosphonite, bis [2, 4-bis (1, 1- dimethylethyl) -6-methylphenyl] ethyl ester, phosphonic acid, etc. are mentioned.

2,2'-methylenebis (4,6-di-t-butyl-1-phenyloxy) (2-ethylhexyloxy) phosphorus, 3,9 -Bis (2,6-di-tert-butyl-4-methylphenoxy) -2,4,8,10-tetraoxa-3,9-diphosphaspiro [5.5] undecane and 6- [3- ( 3-t-butyl-4-hydroxy-5-methylphenyl) propoxy] -2,4,8,10-tetra-t-butyldibenz [d, f] [1,3,2] dioxaphosphine Etc. are preferable.

The type of sulfur-based antioxidant is not particularly limited, but specific examples thereof include 2,2-bis ({[3- (dodecylthio) propionyl] oxy} methyl) -1,3-propanediyl-bis [3 -(Dodecylthio) propionate], 2-mercaptobenzimidazole, dilauryl-3,3'-thiodipropionate, dimyristyl-3,3'-thiodipropionate, distea Reel-3,3'- thiodipropionate, a pentaerythryl- tetrakis (3-lauryl thio propionate), 2-mercapto benzimidazole, etc. are mentioned.

2,2-bis ({[3 (dodecylthio) propionyl] oxy} methyl) -1,3-propanediyl-bis [3- (dodecylthio) in terms of heat resistance and heat discoloration prevention among sulfur-based antioxidants ) Propionate], 2-mercaptobenzimidazole and the like.

The antioxidant may be included in an amount of 0.1 to 30 parts by weight, preferably 0.5 to 20 parts by weight, based on 100 parts by weight of the total solids of the metal oxide photosensitive resin composition for forming a blue pattern layer of the present invention. When the content of the antioxidant satisfies the above range, it is advantageous in terms of solving the problem of lowering the emission intensity.

The thermosetting agent included in the present invention serves to increase the core hardening and mechanical strength of the coating film. The thermosetting agent of the present invention may include at least one of a polyfunctional alicyclic epoxy resin, a silane-modified epoxy resin, and a novolak-type epoxy resin.

The polyfunctional alicyclic epoxy resin may be made by polymerizing a diene compound, and according to an embodiment, may be an alicyclic epoxy resin including a compound represented by Chemical Formula 1 or 2.

In Formula 1, n, m and l are integers of 1 to 20.

<3,4-epoxycyclohexyl-3,4-epoxycyclohexanecarboxylate>

In addition, the novolac epoxy resin may be cresol novolac, or according to one embodiment may be an epoxy resin of the formula (3).

In Formula 3, o is an integer of 1 to 20.

Commercially available products include ortho cresol novolac-type epoxy resins (Semi epoxy ESCN 195XL manufactured by Sumitomo Kagaku Kogyo Co., Ltd.) and an alicyclic epoxy compound "CEL-2021", an alicyclic solid epoxy resin "EHPE-3150" Epoxidized polybutadiene "PB3600", flexible alicyclic epoxy compound "CEL-2081", lactone modified epoxy resin "PCL-G", etc. are illustrated (all are Daicel Chemical Industries, Ltd.). In addition, "Ceroxide 2000", "Epolide GT-3000", and "GT-4000" (all are Daicel Chemical Industries, Ltd.) are illustrated. Among these, ESCN-195XL which is a novolak-type epoxy resin is excellent in sclerosis | hardenability, and "CEL-2021P" and "EHPE-3150" are most excellent in an alicyclic epoxy. These compounds may be used independently, may be combined 2 or more types, and the combination with the thing of the other species shown later is also possible.

The silane-modified epoxy resin is a reactant of a hydroxyl group-containing epoxy resin and an alkoxysilane. Examples of the hydroxyl group-containing epoxy resins include bisphenol type epoxy resins, novolac type epoxy resins, glycidyl ester type epoxy resins, glycidyl amine type epoxy resins, linear aliphatic epoxy resins and alicyclic epoxy resins, and non- Phenyl type epoxy resin etc. are mentioned. Of these, bisphenol type epoxy resins and novolak type epoxy resins are preferably used. The said bisphenol-type epoxy resin can be obtained by reaction of bisphenol and haloepoxide, such as epichlorohydrin or (alpha) -methyl epichlorohydrin. Examples of the bisphenols include a reaction product of phenol or 2,6-dihalophenol with aldehydes or ketones such as formaldehyde, acetaldehyde, acetone, acetophenone, cyclohexanone, and benzophenone, and dihydroxy. The oxidation product by peracid of phenyl sulfide, the etherification reaction product of hydroquinones, etc. are mentioned. Among these bisphenol type epoxy resins, bisphenol A, bisphenol S, bisphenol F, or bisphenol type epoxy resins obtained by using these hydrogenated substances as bisphenols are most commonly used. In addition, the bisphenol-type epoxy resin has the hydroxyl group which can react with the alkoxysilane mentioned later. This hydroxyl group does not need to have all the molecules which comprise a bisphenol-type epoxy resin, and what is necessary is just to have a hydroxyl group as the whole bisphenol-type epoxy resin. For example, although the bisphenol-A epoxy resin is represented by the following general formula (4), m may include one or more, and m may include O.

In Formula 4, q is an integer of 1 to 34.

Such a bisphenol-type epoxy resin can also be used as a phosphorus modified bisphenol-type epoxy resin, for example by making a phosphorus compound react.

The said novolak-type epoxy resin can be obtained by making a phenol novolak resin and a cresol novolak resin react with haloepoxide, for example.

The glycidyl ester type epoxy resin can be obtained by, for example, reacting epichlorohydrin with other basic acids such as phthal.

The glycidyl amine epoxy resin can be obtained by, for example, reacting polyamines such as diaminodiphenylmethane and isocyanuric acid with epichlorohydrin.

The linear aliphatic epoxy resin and alicyclic epoxy resin can be obtained, for example, by treating olefins with peracid such as peracetic acid.

The said biphenyl type epoxy resin can be obtained, for example by making biphenols and epichlorohydrin react.

The preferable value of the epoxy equivalent of a hydroxyl-containing epoxy resin changes with the structure of a hydroxyl-containing epoxy resin. It can select suitably according to a use. Usually, when using the hydroxyl-containing epoxy resin component with an epoxy equivalent too low, since adhesiveness with a board | substrate may fall when it is set as a protective film, it is preferable that the epoxy equivalent of a hydroxyl-containing epoxy resin component shall be 180 or more.

On the other hand, when an epoxy equivalent of an excessively large hydroxyl group-containing epoxy resin component is used, gelation may occur during the reaction with an alkoxysilane described later. Therefore, the epoxy equivalent of the hydroxyl group-containing epoxy resin component is preferably 5,000 or less.

More preferable epoxy equivalent is 200-400.

Moreover, as said alkoxysilane, what is generally used for the sol-gel method can be used.

For example, the compound represented by General formula (5), or these partial condensates can be illustrated.

In Formula 5, p represents an integer of 0 or 1, and R6 represents an alkyl group having 1 to 6 carbon atoms, an aryl group having 1 to 6 carbon atoms, or an unsaturated aliphatic residue having 2 to 6 carbon atoms which may have a functional group directly connected to a carbon atom. R <7> represents a hydrogen atom or a C1-C6 alkyl group, and some R <7> is the same or different, respectively.

More specifically, as said functional group with respect to R6, a vinyl group, a mercapto group, an epoxy group, glycidoxy group, etc. are mentioned, for example.

In addition, "partial condensate" means what is obtained by condensing a part of alkoxyl group in the alkoxysilane represented by the said Formula (5). Such partial condensates can be obtained by hydrolyzing the alkoxysilanes in the presence of acids or alkalis and water.

Specific examples of such alkoxysilanes include tetraalkoxysilanes such as tetramethoxysilane, tetraethoxysilane, tetrapropoxysilane, tetraisopropoxysilane and tetrabutoxysilane; Methyltrimethoxysilane, Methyltriethoxysilane, Methyltripropoxysilane, Methyltributoxysilane, Ethyltrimethoxysilane, Ethyltriethoxysilane, n-propyltrimethoxysilane, n-propyltriethoxy Silane, isopropyltrimethoxysilane, isopropyltriethoxysilane, vinyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, 3,4-epoxycyclohexylethyltrimethoxysilane, 3,4-epoxy Trialkoxysilanes such as cyclohexylethyltriethoxysilane; Or these partial condensates.

Among these, partial condensates of tetramethoxysilane or alkyltrimethoxysilane represented by the following formula (6) are preferable.

(Wherein R ¹ is a methoxy group or an alkyl group having 1 to 6 carbon atoms, n is an integer of 1 to 7)

The average molecular weight of the partial condensate of tetramethoxysilane or alkyltrimethoxysilane represented by the formula (6) is preferably about 260 to 2,000, more preferably about 260 to 890. In the reaction with the hydroxyl group-containing epoxy resin component, the partial condensate of the tetramethoxysilane or the alkyltrimethoxysilane does not react with methanol and the unreacted alkoxysilane component evaporates and does not flow out of the system. Also preferred. It is also preferred in that such partial condensates are not toxic as found in the corresponding monomers.

In the said Formula (6), 11 or less is preferable and, as for the value (n) of the average repeating unit number, 7 or less is more preferable. When this value exceeds 11, since solubility deteriorates and it is easy to insolubilize in a hydroxyl-containing epoxy resin and an organic solvent, there exists a tendency for the reactivity with a hydroxyl-containing epoxy resin to fall.

The silane-modified epoxy resin is obtained by a dealcohol condensation reaction of the hydroxyl group-containing epoxy resin with an alkoxysilane. The use ratio of the hydroxyl group-containing epoxy resin and the alkoxysilane is not particularly limited as long as the alkoxyl group is substantially the same in the silane-modified epoxy resin obtained. It is preferable to set it as the range of 0.01-3.

However, when the hydroxyl group-containing epoxy resin is a high molecular weight resin having an epoxy equivalent of about 400 or more, high viscosity or gelation of the solution may be caused by the progress of the de-alcohol reaction, and this problem can be overcome as follows.

(1) It is preferable to adjust the said equivalence ratio to less than 1 or more than 1 so that either of the hydroxyl group equivalent of a hydroxyl-containing epoxy resin or the alkoxyl group equivalent of an alkoxysilane may become large. In particular, it is preferable to adjust the said equivalence ratio to less than 0.8 or 1.2 or more. It is preferable to manufacture by 1.2 or more of these.

② Prevent high viscosity and gelation by stopping dealcohol reaction in the middle of reaction. For example, a method of adjusting the amount of distillation of methanol in the reaction system, cooling the reaction system, and terminating the reaction may be employed by using the reaction system as a reflux system at a time when the viscosity is high.

The production of the silane-modified epoxy resin is carried out by, for example, putting each of the above components and removing alcohol condensation while distilling off the alcohol produced by heating. The reaction temperature is preferably 50 to 130 ° C, more preferably 70 to 110 ° C, and the total reaction time is preferably 1 to 15 hours. This reaction is preferably carried out under substantially anhydrous conditions in order to prevent the polycondensation reaction of the alkoxysilane itself. In addition, this reaction can also be performed under reduced pressure in the range which does not evaporate a hydroxyl-containing epoxy resin in order to shorten reaction time.

In addition, in said dealcoholization condensation reaction, the thing which does not ring-open an oxirane ring can be used among the conventionally well-known catalysts for reaction promotion. Examples of this catalyst include lithium, sodium, potassium, rubidium, cesium, magnesium, calcium, barium, strontium, zinc, aluminum, titanium, cobalt, germanium, tin, lead, antimony, arsenic, cerium, cadmium, manganese and The same metal; Oxides, organic acid salts, halides, alkoxides and the like of these metals. Among these, organic tin and organic acid tin are particularly preferable, and dibutyltin dilaurate, octylic acid tin and the like are particularly effective.

In addition, the said reaction can also be performed in a solvent. There is no restriction | limiting in particular as a solvent, if it is an organic solvent which melt | dissolves hydroxyl-containing epoxy resin and alkoxysilane, and does not react with these. As such an organic solvent, an aprotic polar solvent, such as dimethylformamide, dimethylacetamide, tetrahydrofuran, and methyl ethyl ketone, is mentioned, for example.

As a commercial item used preferably as a silane modified epoxy resin, Arakawa Chemical Industry Co., Ltd. brand name: Composelan E-101, E-102, E-201, E-202, E-211, E-212 etc. are mentioned. have.

The silane-modified epoxy resin is contained in an amount of 0.1 to 30 parts by weight based on 100 parts by weight of the total solid content of the metal oxide photosensitive resin composition for forming a blue pattern layer. If added below the above range, the chemical resistance is lowered, and if added in excess, there is a problem in heat resistance and development speed.

The thermosetting agent contained in the metal oxide photosensitive resin composition for forming a blue pattern layer according to the present invention is used during the heat treatment of the pixel coating film after development in the manufacturing process of the color filter (usually 180 to 250 ° C or less, preferably 5 to 200 to 230 ° C). 40 minutes, preferably 10 to 35 minutes), react with the carboxyl group in the binder resin to promote crosslinking of the binder resin, improve the hardness of the coating film, and further improve the performance of the color filter.

In the present invention, the thermosetting agent may be included in 0.1 to 20 parts by weight, preferably 0.1 to 10 parts by weight with respect to 100 parts by weight of the total metal oxide photosensitive resin composition for forming a blue pattern layer. When the thermosetting agent is included in the above range, the chemical resistance is good, there is no problem in heat resistance and development speed.

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

Specific examples of the other high molecular compound 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, polyurethanes, and the like. Can be.

Commercially available surfactants can be used as the pigment dispersant, and examples thereof include surfactants such as silicone, fluorine, ester, cationic, anionic, nonionic and amphoteric. These can be used individually or in combination of 2 types or more, respectively.

As said surfactant, For example, polyoxyethylene alkyl ether, polyoxyethylene alkyl peer ether, polyethyleneglycol diester, sorbitan fatty acid ester, fatty acid modified polyester, tertiary amine modified polyurethane , Polyethylenimine, etc., trade names include KP (manufactured by Shin-Etsu Chemical Co., Ltd.), POLYFLOW (manufactured by Kyoeisha Chemical Co., Ltd.), EFTOP (manufactured by Tochem Products), MEGAFAC (manufactured by Dainippon Ink Chemical Industries, Ltd.), Florard (manufactured by Sumitomo 3M), Asahi guard, Surflon (above, manufactured by Asahi Glass), Sol SLSPERSE (made by Genka Corporation), EFKA (made by EFKA Chemicals), PB 821 (made by Ajinomoto Co., Ltd.), etc. are mentioned.

As the adhesion promoter, for example, 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) ethyltrimethoxysilane, 3-chloropropylmethyldimethoxysilane, 3-chloropropyltrimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-mercaptopropyl Trimethoxysilane etc. are mentioned. Specific examples of the antioxidant include 2,2'-thiobis (4-methyl-6-t-butylphenol), 2,6-di-t-butyl-4-methylphenol, and the like.

Specific examples of the aggregation inhibitor include sodium polyacrylate and the like.

Additives whose content is not exemplified in the above additives may be appropriately used by those skilled in the art within a range that does not impair the effects of the present invention. For example, the additive may be used in an amount of 0.05 to 10 parts by weight, preferably 0.1 to 10 parts by weight, more preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the metal oxide photosensitive resin composition, but is not limited thereto.

The metal oxide photosensitive resin composition according to the present invention can be produced, for example, by the following method. The scattering particles are mixed with the solvent in advance and dispersed using a bead mill or the like until the average particle diameter becomes 30 to 300 nm. At this time, if necessary, a dispersant may be further used, and some or all of the binder resin may be blended. The remaining dispersion of the binder resin, the photopolymerizable compound, the photopolymerization initiator, other components used as necessary, and additional solvents as necessary, are further added to the obtained dispersion (hereinafter sometimes referred to as a mill base) to a predetermined concentration. The desired metal oxide photosensitive resin composition can be obtained.

<Color filter and image display device>

Another aspect of the present invention relates to a color filter including a blue pattern layer including a cured product of the metal oxide photosensitive resin composition for forming a blue pattern layer described above.

Since the color filter according to the present invention is made of the above-described metal oxide photosensitive resin composition for forming a blue pattern layer instead of blue quantum dots, the manufacturing cost can be lowered and an excellent viewing angle is obtained.

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

The substrate may be the substrate of the color filter itself, or may be a portion where the color filter is positioned in a display device or the like, and 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 (PC).

The blue pattern layer is a layer including the metal oxide photosensitive resin composition of the present invention, and may be a layer formed by applying the blue metal layer photosensitive resin composition for forming a pattern and exposing, developing, and thermosetting in a predetermined pattern. The pattern layer can be formed by performing a method commonly known in the art.

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

In another embodiment of the present invention, the red pattern layer or green pattern layer may include a quantum dot and scattering particles. Specifically, the color filter according to the present invention may include a red pattern layer including a red quantum dot or a green pattern layer including a green quantum dot, and the red pattern layer or the green pattern layer may include scattering particles. The red pattern layer or the green pattern layer may emit red light or blue light, respectively, by a light source emitting blue light, which will be described later.

In another embodiment of the present invention, the scattering particles may comprise a metal oxide having an average particle diameter of 30 to 300nm, the content of the scattering particles and the metal oxide is included in the metal oxide photosensitive resin composition according to the present invention The content of the scattering particles and the metal oxide can be applied.

In the present invention, the shape, configuration, 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 may be applied.

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

Another aspect of the invention, the above-described color filter; And a light source emitting blue light. In short, the image display apparatus according to the present invention includes a color filter including a blue pattern layer including a cured product of the metal oxide photosensitive resin composition described above, and a light source emitting blue light.

The color filter of the present invention can be applied to various image display devices such as electroluminescent display devices, plasma display devices, field emission display devices, as well as ordinary liquid crystal display devices.

When the image display device includes a color filter including a blue pattern layer and the light source according to the present invention, there is an advantage of having excellent light 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 in that an image display device having low manufacturing cost can be manufactured.

Hereinafter, the present invention will be described in detail with reference to Examples. However, the embodiments according to the present disclosure may be modified in various other forms, and the scope of the present specification is not to be interpreted as being limited to the embodiments described below. The embodiments of the present specification are provided to more fully describe the present specification to those skilled in the art. In addition, "%" and "part" which show content below are a basis of weight unless there is particular notice.

Synthesis Example : Synthesis of Binder Resin

A flask equipped with a stirrer, a thermometer, a reflux condenser, a dropping lot, and a nitrogen introduction tube was prepared, and as a monomer dropping lot, 74.8 g (0.20 mole) of benzylmaleimide, 43.2 g (0.30 mole) of acrylic acid, and vinyltoluene 118.0 g (0.50 mol), 4 g of t-butylperoxy-2-ethylhexanoate and 40 g of propylene glycol monomethyl ether acetate (PGMEA) were added thereto, followed by stirring and mixing. As a chain transfer agent dropping tank, n-dodecanethiol 6g and PGMEA24g were added, and the thing mixed with stirring was prepared. Thereafter, 395 g of PGMEA was introduced into the flask, and the atmosphere in the flask was changed to nitrogen from air, and then the temperature of the flask was raised to 90 ° C. while stirring. Subsequently, dropping of the monomer and the chain transfer agent was started from the dropping lot. The dropwise addition was carried out for 2 h each while maintaining 90 ° C., and after 1 h, the temperature was raised to 110 ° C. and maintained for 3 h. Started. Next, 28.4 g glycidyl methacrylate [(0.10 mol), (33 mol% with respect to the carboxyl group of acrylic acid used for this reaction)], 2,2'- methylenebis (4-methyl-6-t-butylphenol ) 0.4 g and 0.8 g of triethylamine were added to the flask, and the reaction was continued at 110 ° C. for 8 hours to obtain a binder resin having a solid acid value of 70 mgKOH / g. The weight average molecular weight of polystyrene conversion measured by GPC was 16,000, and molecular weight distribution (Mw / Mn) was 2.3.

Equipment: HLC-8120GPC (manufactured by Tosoh Corporation)

Column: TSK-GELG4000HXL + TSK-GELG2000HXL (Serial Connection)

Column temperature: 40 ℃

Mobile phase solvent: tetrahydrofuran

Flow rate: 1.0 ml / min

Injection volume: 50 μl

Detector: RI

Measurement sample concentration: 0.6 mass% (solvent = tetrahydrofuran)

Calibration standard: TSK STANDARD POLYSTYRENE F-40, F-4, F-1, A-2500, A-500 (manufactured by Tosoh Corporation)

The ratio of the weight average molecular weight and number average molecular weight obtained above was made into molecular weight distribution (Mw / Mn).

Example  1 to 25 and Comparative example  1 to 5: preparation of metal oxide photosensitive resin composition

To prepare a photosensitive resin composition with a composition according to Tables 1 to 4, the scattering particles according to the Examples and Comparative Examples, the colorants are shown in Tables 5 and 6 below.

		Example
		One	2	3	4	5	6	7	8	9	10	11	12
Scattering particles	E-1	15	-	-	-	5	10	30	-	-	0.1	60	50
	E-2	-	15	-	-	-	-	-	-	-	-	-	-
	E-3	-	-	15	-	-	-	-	-	-	-	-	-
	E-4	-	-	-	15	-	-	-	-	-	-	-	-
	E-5	-	-	-	-	-	-	-	-	-	-	-	-
	E-6	-	-	-	-	-	-	-	-	-	-	-	-
	E-7	-	-	-	-	-	-	-	15	-	-	-	-
	E-8	-	-	-	-	-	-	-	-	15	-	-	-
	E-9	-	-	-	-	-	-	-	-	-	-	-	-
	E-10	-	-	-	-	-	-	-	-	-	-	-	-
	E-11	-	-	-	-	-	-	-	-	-	-	-	-
Binder Resin 1 )		6.52	6.52	6.52	6.52	6.52	6.52	6.52	6.52	6.52	6.52	6.52	6.52
Photopolymerizable compound 2)		4.35	4.35	4.35	4.35	4.35	4.35	4.35	4.35	4.35	4.35	4.35	4.35
Photopolymerization initiator 3 )		2.29	2.29	2.29	2.29	2.29	2.29	2.29	2.29	2.29	2.29	2.29	2.29
Solvent 4 )		71.84	71.84	71.84	71.84	81.84	76.84	56.84	71.84	71.84	86.74	26.84	36.84
1) Binder resin according to the synthesis example 2) dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.) 3) Irgacure-907 (made by BASF) 4) propylene glycol monomethyl ether acetate

		Example
		13	14	15	16	17	18	19	20
Scattering particles	E-1	15	15	15	15	15	15	15	15
Blue colorant	B-1	3	-	-	-	1.5	1.5	1.5	1.5
	B-2	-	3	-	-	1.5	-	-	-
	B-3	-	-	3	-	-	1.5	-	-
	B-4	-	-	-	3	-	-	1.5	-
	V-1	-	-	-	-	-	-		1.5
Binder Resin 1 )		9.75	9.75	9.75	9.75	9.75	9.75	9.75	9.75
Photopolymerizable compound 2 )		6.5	6.5	6.5	6.5	6.5	6.5	6.5	6.5
Photopolymerization initiator 3 )		2.29	2.29	2.29	2.29	2.29	2.29	2.29	2.29
Solvent 4 )		63.46	63.46	63.46	63.46	63.46	63.46	63.46	63.46
1) Binder resin according to the synthesis example 2) dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.) 3) Irgacure-907 (made by BASF) 4) propylene glycol monomethyl ether acetate

		Example
		21	22	23	24	25
Scattering particles	E-1	15	15	15	15	15
Blue colorant	B-1	55	-	-	-	-
	B-2	-	55	-	-	-
	B-3	-	-	55	-	-
	B-4	-	-	-	55	-
	V-1	-	-	-	-	55
Binder Resin 1 )		9.75	9.75	9.75	9.75	9.75
Photopolymerizable compound 2 )		6.5	6.5	6.5	6.5	6.5
Photopolymerization initiator 3 )		2.29	2.29	2.29	2.29	2.29
Solvent 4 )		11.46	11.46	11.46	11.46	11.46
1) Binder resin according to the synthesis example 2) dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.) 3) Irgacure-907 (made by BASF) 4) propylene glycol monomethyl ether acetate

		Comparative example
		One	2	3	4	5
Scattering particles	E-1	-	-	-	-	-
	E-2	-	-	-	-	-
	E-3	-	-	-	-	-
	E-4	-	-	-	-	-
	E-5	-	-	15	-	-
	E-6	-	-	-	15	-
	E-7	-	-	-	-	-
	E-8	-	-	-	-	-
	E-9	-	-	-	-	15
	E-10	15	-	-	-	-
	E-11	-	15	-	-	-
Binder Resin 1 )		6.52	6.52	6.52	6.52	6.52
Photopolymerizable compound 2 )		4.35	4.35	4.35	4.35	4.35
Photopolymerization initiator 3 )		2.29	2.29	2.29	2.29	2.29
Solvent 4 )		71.84	71.84	71.84	71.84	71.84
1) Binder resin according to the synthesis example 2) dipentaerythritol hexaacrylate (KAYARAD DPHA; manufactured by Nippon Kayaku Co., Ltd.) 3) Irgacure-907 (made by BASF) 4) propylene glycol monomethyl ether acetate

	Kinds	Average particle diameter	product name	manufacturer
E-1	TiO 2	220 nm	TR-88	Huntsmansa
E-2	TiO 2	30 nm	TTO-55 (C)	Ishihara
E-3	TiO 2	130 nm	PT-401L	Ishihara
E-4	TiO 2	210 nm	CR-63	Ishihara
E-5	TiO 2	500 nm	R-960	Dupont
E-6	TiO 2	900 nm	R-902	Dupont
E-7	Al 2 O 3	50 nm	0.05㎛ Aluminapowder	Allied
E-8	Al 2 O 3	300 nm	0.3㎛ Aluminapowder	Allied
E-9	Al 2 O 3	1000 nm	1.0㎛ Aluminapowder	Allied
E-10	SiO 2	2000 nm	SYLYSIA 220A	Fujisa
E-11	SiO 2	fumed silica	Arosil 200	Degussa

	Kinds	product name	manufacturer
B-1	C.I.Pigment B15: 6	Fastogen Blue EP-7S	DIC
B-2	C.I.Pigment B15: 4	Fastogen Blue 5424	DIC
B-3	C.I.Pigment B15: 3	Heliogen Blue L 7072 D	BASF
B-4	C.I.Pigment B16	Pigment Blue 16	CPMA
V-1	C.I.Pigment V23	Fastogen Super Violet 140V	DIC

Manufacture of color filter

Color filters were prepared using the metal oxide photosensitive resin compositions prepared in Examples and Comparative Examples. That is, each of the photosensitive resin composition was applied on a glass substrate by spin coating, and then placed on a heating plate and maintained at a temperature of 100 ° C. for 3 minutes to form a thin film.

Subsequently, a test photomask having a transmissive pattern of horizontal × vertical 20 mm × 20 mm squares and a line / space pattern of 1 to 100 μm was placed on the thin film and irradiated with ultraviolet rays at a distance of 100 μm from the test photomask.

At this time, the ultraviolet light source was irradiated with an exposure amount (365 nm) of 200 mJ / cm 2 under an atmospheric atmosphere using an ultra high pressure mercury lamp (trade name USH-250D) manufactured by Ushio Denki Co., Ltd., and no special optical filter was used.

The thin film irradiated with ultraviolet rays was developed by soaking for 80 seconds in a KOH aqueous solution developing solution of pH 10.5. The thin film coated glass plate was washed with distilled water, dried by blowing nitrogen gas, and heated in a heating oven at 150 ° C. for 10 minutes to prepare a color filter pattern for blue pixels. The film thickness of the color pattern prepared above was 5.0 μm.

Experimental Example  1: fine pattern measurement

The size of the pattern obtained through the line / space pattern mask designed to 100 μm of the color filter manufactured using the metal oxide photosensitive resin composition prepared according to Examples 1 to 12 and Comparative Examples 1 to 5 was measured using OM equipment (ECLIPSE LV100POL Nikon). 4) The pattern size was measured, and the difference from the design value of the line / space pattern mask is shown in Table 7 below.

	Difference in Fine Pattern
Example 1	10
Example 2	11
Example 3	9
Example 4	10
Example 5	13
Example 6	6
Example 7	2
Example 8	12
Example 9	9
Example 10	15
Example 11	One
Example 12	6
Comparative Example 1	-2
Comparative Example 2	25
Comparative Example 3	-One
Comparative Example 4	-5
Comparative Example 5	-4

When 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 is difficult to implement the micropixels, and when the negative value is shown, it means a threshold value that causes a process defect.

Referring to Table 7, it can be seen that the fine patterns were well formed in Examples 1 to 9 compared to Comparative Examples 1 to 5 in which the average particle diameter of the metal oxide scattering particles deviated from 30 to 300 nm. However, in Examples 10 to 12, when the scattering particle content is 5 to 30 parts by weight, it may be confirmed that formation of the micropixels is somewhat difficult.

Experimental Example  2: luminous intensity measurement

A 365 nm tube-type 4 W UV irradiator (VL-4LC, VILBER LOURMAT) was applied to a portion of the color filter manufactured using the metal oxide photosensitive resin composition prepared according to Examples and Comparative Examples, formed in a 20 × 20 mm square pattern. The light-converted region was measured, and the emission intensity in the 450 nm region was measured using a spectrum meter (Ocean Optics, Inc.), and the results are shown in Table 8 below.

	Luminous intensity
Example 1	28500
Example 2	34800
Example 3	30800
Example 4	28800
Example 5	34200
Example 6	31300
Example 7	26500
Example 8	21900
Example 9	36500
Example 10	22400
Example 11	15200
Example 12	17800
Example 13	32425
Example 14	33322
Example 15	31405
Example 16	32000
Example 17	31212
Example 18	32632
Example 19	30048
Example 20	32144
Example 21	8556
Example 22	8523
Example 23	8321
Example 24	8740
Example 25	8455
Comparative Example 1	17700
Comparative Example 2	28200
Comparative Example 3	19200
Comparative Example 4	16400
Comparative Example 5	15300

The higher the emission intensity measured, the higher the light efficiency. Referring to Table 8, the scattering particles of the metal oxides emit light in Examples 1 to 9 compared to Comparative Examples 1 to 5 in which the average particle diameter deviated from 30 to 300 nm. It was confirmed that the strength was improved. However, in Examples 10 to 12, when the scattering particle content is 5 to 30 parts by weight, the light efficiency was slightly reduced.

Through Examples 13 to 20, it was confirmed that the emission intensity was maintained high even when the blue colorant and the purple colorant were added. However, in Examples 21 to 25, when the content of the blue colorant exceeds 50 parts by weight of the total composition, it was confirmed that the emission intensity is greatly reduced.

Experimental Example  3: viewing angle measurement

The intensity of light intensity (Intensity) according to the viewing angle under the light-transmitting condition in the portion formed in the pattern of 20 × 20 mm square among the color filters prepared using the metal oxide photosensitive resin prepared according to the Examples and Comparative Examples (GC- 5000L, Nippon Denshoku) was used, and the diffusion rate was calculated using the following Formula 1. The results are shown in Table 9 below.

[Calculation 1]

% Diffusion = (I70 + I20) / 2 × I5 × 100

(I: Intensity measured at each viewing angle.)

	% Diffusion
Example 1	84.3
Example 2	20.5
Example 3	43.5
Example 4	78.9
Example 5	41.2
Example 6	78.1
Example 7	82.1
Example 8	18.7
Example 9	34.5
Example 10	2.1
Example 11	8.5
Example 12	11.2
Example 13	75.4
Example 14	77.8
Example 15	76.1
Example 16	78.4
Example 17	77.3
Example 18	76.8
Example 19	76.9
Example 20	77.3
Example 21	10.5
Example 22	8.9
Example 23	9.9
Example 24	10.1
Example 25	8.1
Comparative Example 1	4.5
Comparative Example 2	2.5
Comparative Example 3	8
Comparative Example 4	3.5
Comparative Example 5	2.3

The higher the measured diffusion, the better the viewing angle. Thus, in Table 9, it was confirmed that the viewing angles were improved in Examples 1 to 9 compared to Comparative Examples 1 to 5 in which the scattering particles of the metal oxide had an average particle diameter of 30 to 300 nm. However, in Examples 10 to 12, when the scattering particle content was 5 to 30 parts by weight, the viewing angle was slightly reduced.

Through Examples 13 to 20, it was confirmed that the viewing angle improvement was maintained even when a blue colorant or a purple colorant was added. However, in Examples 21 to 25, when the blue colorant exceeds 50 parts by weight of the total composition, it was confirmed that the viewing angle is greatly reduced.

Experimental Example  4: Outer light  reflectivity

Spectroscopic measurement of light reflectance under light-transmitting conditions on a portion formed in a 20 × 20 mm square pattern among color filters manufactured using the metal oxide photosensitive resin composition for forming a blue pattern layer prepared according to Examples 1 and 13 to 25 It was measured using a colorimeter CM-3600A (Konita Minolta Co., Ltd.) and is shown in Table 10 below.

	External light reflectance (%)
Example 1	9.1
Example 13	3.3
Example 14	3
Example 15	2.5
Example 16	2.9
Example 17	3.5
Example 18	2.2
Example 19	2.6
Example 20	2.7
Example 21	1.1
Example 22	One
Example 23	0.9
Example 24	0.8
Example 25	One

Based on the results of Table 10, it can be seen that by introducing a blue colorant into the metal oxide photosensitive resin composition, it is possible to lower the excellent diffusion rate and the external reflectance while maintaining the emission intensity high.

Claims (16)

1. Scattering particles comprising a metal oxide having an average particle diameter of 30 to 300nm ;, except that the metal oxide photosensitive resin composition for forming a blue pattern layer does not contain a quantum dot.
2. The method of claim 1,

   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, Yb, Ti, Sb, Sn, Zr, Nb, Metal oxide photosensitive resin composition for forming a blue pattern layer comprising at least one oxide selected from the group consisting of Ce, Ta, In and combinations thereof.
3. The method of claim 2,

   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, Metal oxide photosensitive resin composition for forming a blue pattern layer comprising at least one selected from the group consisting of MgO and combinations thereof.
4. The method of claim 1,

   Wherein the scattering particles are contained in 0.1 to 50 parts by weight based on 100 parts by weight of the total metal oxide photosensitive resin composition metal oxide photosensitive resin composition for forming a blue pattern layer.
5. The method of claim 1,

   Metal oxide photosensitive resin composition for blue pattern layer formation which further contains a blue coloring agent.
6. The method of claim 5,

   The blue colorant is C.I. Pigment Blue 15: 3, 15: 4, 15: 6, 16, 21, 28, 60, 64, 76, and a blue pattern layer for forming a blue pattern comprising at least one selected from the group consisting of a combination thereof Metal oxide photosensitive resin composition.
7. The method of claim 5,

   The blue colorant is a metal oxide photosensitive resin composition for forming a blue pattern layer, which further comprises one or more selected from the group consisting of dyes and purple pigments.
8. The method of claim 5,

   The blue colorant is 0.1 to 50 parts by weight based on 100 parts by weight of the total metal oxide photosensitive resin composition, the metal oxide photosensitive resin composition for forming a blue pattern layer.
9. The method of claim 1,

   Binder resins; Photopolymerizable compounds; Photopolymerization initiator; solvent; And at least one additive selected from the group consisting of a UV absorber, an antioxidant, and a thermosetting agent.
10. The method of claim 9,

    The thermosetting agent is a metal oxide photosensitive resin composition for forming a blue pattern layer comprising at least one selected from the group consisting of a polyfunctional alicyclic epoxy resin, a silane-modified epoxy resin and a novolak-type epoxy resin.
11. The method of claim 9,

    The metal oxide photosensitive resin composition for forming a blue pattern layer, wherein the solvent comprises 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.
12. The color filter containing the blue pattern layer containing the hardened | cured material of the metal oxide photosensitive resin composition for blue pattern layer formation as described in any one of Claims 1-11.
13. The method of claim 12,

    The color filter further comprises one or more selected from the group consisting of a red pattern layer and a green pattern layer.
14. The method of claim 13,

    The red pattern layer or the green pattern layer is a color filter comprising a quantum dot and scattering particles.
15. The method of claim 14,

    The scattering particle is a color filter comprising a metal oxide having an average particle diameter of 30 to 300nm.
16. A color filter according to claim 12; And

    And a light source emitting blue light.