TW202305064A - Pigment dispersion, photosensitive resin composition comprising the same, photosensitive resin layer, color filter, and display device - Google Patents

Abstract

Disclosed are a pigment dispersion, a photosensitive resin composition including the pigment dispersion, a photosensitive resin layer manufactured using the photosensitive resin composition, a color filter including the photosensitive resin layer, and a display device including the color filter. The pigment dispersion includes a green pigment dispersion including a first dispersion resin having a weight average molecular weight of 8000 g/mol to 12000 g/mol and an acid value of 100 mgKOH/g to 140 mgKOH/g and a yellow pigment dispersion including a second dispersion resin having a weight average molecular weight of 8000 g/mol to 12000 g/mol and an acid value of less than 100 mgKOH/g.

Description

Pigment dispersion, photosensitive resin composition including same, photosensitive resin layer, color filter, and display device

[ Cross References to Related Applications ]

This application claims priority and benefit from Korean Patent Application No. 10-2021-0094193 filed with the Korean Intellectual Property Office on July 19, 2021, the entire contents of which are incorporated herein by reference.

The present invention relates to a pigment dispersion liquid, a photosensitive resin composition containing it, a photosensitive resin layer manufactured using the photosensitive resin composition, a color filter containing the photosensitive resin layer, and a display device containing the color filter.

At present, the flat panel display market has grown too large to support the main loads of plasma display panels (plasma display panels; PDP), liquid crystal displays (liquid crystal display; LCD), organic light emitting displays (organic light emitting display; OLED), Demand for solid-state imaging devices (CCD, CMOS, etc.), touch displays using the same, and the like. Specifically, LCD is the main product in the flat panel display market and consists of color filters, thin film transistors, and liquid crystals. Color filters for color liquid crystal displays (LCDs), imaging devices, or the like are fabricated by uniformly spin-coating on a substrate patterned with a black matrix And the photosensitive resin composition of the pigment of the blue color, and then repeatedly heating and drying the coating film, and exposing and developing it, and further heating and curing it for each color as necessary to form a picture element of each color .

Photosensitive resin composition is the basic material for flat panel display panels, such as color filters, liquid crystal displays (LCD), organic light-emitting displays (OLED), plasma display panels (PDP), solid-state imaging devices (CCD, CMOS, etc. ) and the like in which the quality of the color filter varies depending on the composition of the photosensitive resin composition. Conventionally, research on photosensitive resin compositions has been conducted toward improving colorants such as binder resins, pigments, and the like, photopolymerizable monomers, and the like, but has recently reached a limit. Therefore, efforts to improve the properties of the photosensitive resin composition by improving other components constituting the photosensitive resin composition, such as a dispersion resin for dispersing a pigment, etc., have continued.

The examples provide a pigment dispersion having excellent patternability.

Another embodiment provides a photosensitive resin composition including a pigment dispersion liquid and capable of reproducing high color in addition to patternability.

Another embodiment provides a photosensitive resin layer manufactured using a photosensitive resin composition.

Another embodiment provides a color filter including a photosensitive resin layer.

Another embodiment provides a display device including color filters.

One embodiment provides a pigment dispersion: the pigment dispersion comprises a green pigment dispersion, comprising a weight average molecular weight of 8000 g/mole to 12000 g/mole and an acid value of 100 mg potassium hydroxide/g to 140 mg Potassium hydroxide per gram of the first dispersion resin and green pigment; and a yellow pigment dispersion comprising a weight average molecular weight of 8,000 g/mol to 12,000 g/mol and an acid value of less than 100 mg potassium hydroxide/gram of the second Dispersion resin and yellow pigment.

The first dispersion resin and the second dispersion resin may each independently be an acrylic resin.

The weight ratio of the green pigment dispersion liquid to the yellow pigment dispersion liquid may be 1.41:1 to 2.46:1.

The pigment dispersion liquid may further contain a dispersant and a solvent.

Another embodiment provides a photosensitive resin composition including a pigment dispersion.

The pigment dispersion liquid may be contained in an amount of 50% by weight to 90% by weight based on the total amount of the photosensitive resin composition.

The photosensitive resin composition may further include a binder resin, a photopolymerizable monomer, a photopolymerization initiator, and a solvent.

Based on the total amount of the photosensitive resin composition, the photosensitive resin composition may contain 0.1% by weight to 5% by weight of a binder resin; 0.5% by weight to 10% by weight of a photopolymerizable monomer; 0.01% by weight to 5% by weight % of the photopolymerization initiator; 50% by weight to 90% by weight of the pigment dispersion, and the remaining amount of solvent.

The photosensitive resin composition may further include malonic acid, 3-amino-1,2-propanediol, silane coupling agent, leveling agent, fluorine-based surfactant, free radical polymerization initiator or a combination thereof.

Another embodiment provides a photosensitive resin layer manufactured using a photosensitive resin composition.

Another embodiment provides a color filter including a photosensitive resin layer.

Another embodiment provides a display device including color filters.

Other embodiments of the invention are included in the following detailed description.

The pigment dispersion liquid according to the examples has excellent patternability because it contains a dispersion resin optimized for a solid pigment having a specific color, and even if the photosensitive resin composition contains a high content of the pigment dispersion liquid, high Color reproduction is possible while maintaining patternability.

Hereinafter, embodiments of the present invention are described in detail. However, these embodiments are exemplary, the present invention is not limited thereto and the present invention is defined by the claims.

As used herein, when no specific definition is otherwise provided, "alkyl" refers to C1 to C20 alkyl, the term "alkenyl" refers to C2 to C20 alkenyl, the term "cycloalkenyl" refers to C3 to C20 cycloalkenyl, the term "Heterocycloalkenyl" refers to C3 to C20 heterocycloalkenyl, "aryl" refers to C6 to C20 aryl, the term "arylalkyl" refers to C6 to C20 arylalkyl, and the term "alkylene" refers to C1 to C20 alkylene, the term "arylylene" refers to C6 to C20 arylylene, "alkylaryl" refers to C6 to C20 alkylene aryl, the term "heteroaryl" refers to C3 to C20 heteroaryl , and the term "alkyleneoxy" refers to C1 to C20 alkyleneoxy.

As used herein, when no specific definition is otherwise provided, "substituted" means that at least one hydrogen is replaced by a halogen atom (F, Cl, Br or I), hydroxyl, C1 to C20 alkoxy, nitro, cyano, amino , imino group, azido group, formamidine group, hydrazine group, hydrazino group, carbonyl group, carbamoyl group, thiol group, ester group, ether group, carboxyl group or its salt, sulfonic acid group or its salt, phosphoric acid or Its salt, C1 to C20 alkyl, C2 to C20 alkenyl, C2 to C20 alkynyl, C6 to C20 aryl, C3 to C20 cycloalkyl, C3 to C20 cycloalkenyl, C3 to C20 cycloalkynyl, C2 to C20 heterocycloalkyl, C2 to C20 heterocycloalkenyl, C2 to C20 heterocycloalkynyl, C3 to C20 heteroaryl or combinations thereof are substituted.

As used herein, when no specific definition is otherwise provided, "hetero" refers to a heteroatom containing at least one of N, O, S, and P in a chemical formula.

As used herein, when no specific definition is otherwise provided, "(meth)acrylate" refers to both "acrylate" and "methacrylate", and "(meth)acrylic" refers to "acrylic" and " Methacrylate".

As used herein, when a specific definition is not otherwise provided, the term "combination" refers to mixing or copolymerization.

In this specification, when no specific definition is otherwise provided, the unsaturated bond includes bonds between other atoms, such as carbonyl bonds or azo bonds, and multiple bonds between carbon-carbon atoms.

Furthermore, in this specification, when no definition is provided otherwise, "*" means a bonding point with the same atom or chemical formula or a different atom or chemical formula.

The pigment dispersion liquid according to the embodiment comprises a green pigment dispersion liquid and a yellow pigment dispersion liquid, wherein the green pigment dispersion liquid comprises a weight average molecular weight of 8000 g/mol to 12000 g/mol and an acid value of 100 mg potassium hydroxide/g Up to 140 mg potassium hydroxide/g of the first dispersion resin and green pigment, and the yellow pigment dispersion contains weight average molecular weight of 8000 g/mol to 12000 g/mol and acid value less than 100 mg potassium hydroxide/g Second dispersion resin and yellow pigment.

A conventional photosensitive resin composition for producing a photosensitive resin layer in a color filter is prepared by modifying a binder resin, a solid pigment, or the like to ensure excellent patternability, and the like. However, individually modifying binder resins, solid pigments, and the like has fundamental limitations in improving patternability.

Specifically, since color filters can be thinned to reduce crosstalk (mixing of light) but need to maintain spectral shape, while thinning requires a significant increase in pigment concentration in solids content. Therefore, the photosensitive resin composition contains components required for photolithography in a relatively small content and may have difficulty in pattern formation.

The present inventors have accurately recognized that the difficulty in pattern formation is caused by the reduced content of components required for photolithography, and thus have tried to modify the binder resin or the solid pigment including the photosensitive resin composition to In addition to the method of improving patternability, the content of the components required for photolithography is ensured by securing the necessary properties of the dispersion resin in the pigment dispersion liquid, and as a result, it has been confirmed that the patternability can be achieved by in each specific range The present invention is accomplished by internally limiting the weight average molecular weight and acid value of the dispersion resin of each of the mixed pigment dispersions including the green pigment dispersion and the yellow pigment dispersion.

In other words, in the present invention, the weight-average molecular weight and acid value of the dispersion resin in the pigment dispersion can be limited to adjust the number of double bonds and thus increase the degree of curing to improve the film residue ratio and further secure developability.

The pigment dispersion liquid according to the embodiment comprises a green pigment dispersion liquid and a yellow pigment dispersion liquid, wherein the green pigment dispersion liquid comprises a weight average molecular weight of 8000 g/mol to 12000 g/mol and an acid value of 100 mg potassium hydroxide/g Up to 140 mg potassium hydroxide/g of the first dispersion resin and green pigment, and the yellow pigment dispersion contains weight average molecular weight of 8000 g/mol to 12000 g/mol and acid value less than 100 mg potassium hydroxide/g Second dispersion resin and yellow pigment.

As described above, the weight average molecular weight and acid value of the first dispersion resin, the dispersion resin of the green pigment and the weight average molecular weight and acid value of the second dispersion resin, the dispersion resin of the yellow pigment may be limited to improve patternability and at the same time Improves film residue ratio and developability. Specifically, when the weight average molecular weight of the first dispersion resin constituting the green pigment dispersion is in the range of 8000 g/mol to 12000 g/mol but the acid value is not in the range of 100 mg potassium hydroxide/g to 140 mg hydroxide When within the range of potassium per gram, patternability, degree of curing, film residue ratio, developability and the like can be improved at the same time, and similarly, when the acid value of the first dispersion resin is within 100 mg of potassium hydroxide per gram Patternability, degree of curing, film residue ratio, developability and the like to the range of 140 mg potassium hydroxide/gram but the weight average molecular weight is not in the range of 8000 g/mol to 12000 g/mol May not improve at the same time. In addition, when the weight average molecular weight of the second dispersion resin constituting the yellow pigment dispersion is in the range of 8000 g/mol to 12000 g/mol but the acid value is 100 mg potassium hydroxide/g or greater than 100 mg potassium hydroxide /g, patternability, degree of curing, film residue ratio, developability and the like can be improved at the same time, and similarly, when the acid value of the first dispersion resin is less than 100 mg potassium hydroxide/g but the weight average molecular weight When not in the range of 8000 g/mol to 12000 g/mol, patternability, degree of curing, film residue ratio, developability, and the like may not be simultaneously improved. In other words, the pigment dispersion liquid according to one embodiment may be in the mixed form of a green pigment dispersion liquid and a yellow pigment dispersion liquid, wherein the first dispersion resin constituting the green pigment dispersion liquid and the second dispersion resin constituting the yellow pigment dispersion liquid The weight average molecular weight and acid value should be precisely controlled simultaneously to simultaneously improve patternability, degree of curing, film residue ratio, developability, and the like.

The first dispersion resin and the second dispersion resin may each independently be an acrylic resin.

The acrylic resin is a copolymer of a first ethylenically unsaturated monomer and a second ethylenically unsaturated monomer copolymerizable therewith, and is a resin comprising at least one repeating unit of acrylic acid.

The first ethylenically unsaturated monomer may be an ethylenically unsaturated monomer containing at least one carboxyl group, and examples of the monomer may include acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid , its combination.

The first ethylenically unsaturated monomer may be included in an amount of 5% to 50% by weight, for example, 10% to 40% by weight, based on the total amount of the acrylic resin.

The second ethylenically unsaturated monomer may be: an aromatic vinyl compound such as styrene, α-methylstyrene, vinyltoluene, vinylbenzyl methyl ether, and the like; an unsaturated carboxylic acid ester compound, For example, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-hydroxybutyl (meth)acrylate, (meth)acrylate ) benzyl acrylate, cyclohexyl (meth)acrylate, phenyl (meth)acrylate and the like; unsaturated aminoalkyl carboxylate compounds such as 2-aminoethyl (meth)acrylate, (meth)acrylate base) 2-dimethylaminoethyl acrylate and the like; vinyl carboxylate compounds such as vinyl acetate, vinyl benzoate and the like; unsaturated glycidyl carboxylate compounds such as (meth)acrylic acid Glycidyl esters and the like; vinyl cyanide compounds such as (meth)acrylonitrile and the like; unsaturated amide compounds such as (meth)acrylamide and the like; and the like, and may be used alone or Used as a mixture of two or more.

Specific examples of the acrylic resin may be (meth)acrylic acid/benzyl methacrylate copolymer, (meth)acrylic acid/benzyl methacrylate copolymer, (meth)acrylic acid/benzyl methacrylate/ Styrene copolymer, (meth)acrylic acid/benzyl methacrylate/2-hydroxyethyl methacrylate copolymer, (meth)acrylic acid/benzyl methacrylate/styrene/methacrylic acid 2- Hydroxyethyl ester copolymers and the like, but not limited thereto, and these may be used alone or in admixture of two or more.

The T green pigment can be a halogen-substituted copper phthalocyanine pigment in the color index, such as C.I. Green Pigment 59, C.I. Green Pigment 58, C.I. Green Pigment 36 or C.I. Green Pigment 7, which can be used alone or in combination of two or more Combinations of these are used but the present invention is not limited thereto.

Yellow pigments can be isoindoline pigments in the color index, such as C.I. Yellow Pigment 139; quinoline yellow pigments, such as C.I. Yellow Pigment 138; nickel composite pigments, such as C.I. Yellow Pigment 150, C.I. Yellow Pigment 100, and the like , which can be used alone or in combination of two or more, but the present invention is not limited thereto.

The pigment dispersion liquid according to the embodiment may further contain a red pigment, a blue pigment, and the like, and another dispersion resin capable of dispersing the red pigment and/or the blue pigment may be mixed with the red pigment and/or the blue pigment.

Red Pigment 179, C.I. Red Pigment 254, C.I. Red Pigment 255, C.I. Red Pigment 264, C.I. Red Pigment 270, C.I. Red Pigment 272, C.I. Red Pigment 177, C.I. Red Pigment 89 and the like in the color index , which can be used alone or in combination of two or more, but the present invention is not limited thereto.

The blue pigment can be C.I. Blue Pigment 15:6, C.I. Blue Pigment 15:0, C.I. Blue Pigment 15:1, C.I. Blue Pigment 15:2, C.I. Blue Pigment 15:3, C.I. Blue pigment 15:4, C.I. blue pigment 15:5, C.I blue pigment 15:6, C.I. blue pigment 16, which can be used alone such as in combination of two or more, but not the present invention limited to this.

For example, a green pigment dispersion may be included in an amount greater than that stated for a yellow pigment dispersion.

For example, the weight ratio of the green pigment dispersion to the yellow pigment dispersion may be 1.41:1 to 2.46:1. When the weight ratio of the green pigment dispersion liquid to the yellow pigment dispersion liquid is within the above range, patternability can be greatly improved.

For example, the pigment dispersion liquid may further contain a dispersant and a solvent.

That is, in addition to the dispersion resin, a dispersant may be used together to disperse the pigment. Specifically, the pigment may be surface-treated with a dispersant in advance, or the dispersant may be added together with the pigment when preparing the composition. On the other hand, the types of solvents constituting the pigment dispersion liquid are as described below.

The dispersant may be a nonionic dispersant, anionic dispersant, cationic dispersant, and the like. Specific examples of the dispersant include polyalkylene glycols and esters thereof, polyalkylene oxides, polyol ester alkylene oxide adducts, alcohol alkylene oxide adducts, sulfonates, sulfonates, carboxylates, Carboxylate, alkylamide alkylene oxide adduct, alkylamine and the like, and these may be used alone or in combination of two or more.

For example, commercially available products of the dispersant are DISPERBYK-101, DISPERBYK-130, DISPERBYK-140, DISPERBYK-140, DISPERBYK-140, BYK Co., Ltd. Spike-160, Dispic-161, Dispic-162, Dispic-163, Dispic-164, Dispic-165, Dispic-166, Dis Bik-170, Dispic-171, Dispic-182, Dispic-2000, Dispic-2001, and similar; Egypt of EFKA Chemicals Co. Efka-47, Efka-47EA, Efka-48, Efka-49, Efka-100, Efka-400, Efka-450 and similar; Zeneka Co.'s Solsperse 5000, Solsperse 12000, Solsperse 13240, Solsperse 13940, Solsperse 17000, Solsperse 20000, Solsperse 24000GR, Solsperse 27000, Solsperse 28000 and the like; or PB711, PB821 and the like from Ajinomoto Inc.

The dispersant may be included in an amount of 0.1% by weight to 15% by weight based on the total amount of the photosensitive resin composition. When the dispersant is included in the above, the composition has excellent dispersibility, and thus has excellent stability, developability, and patternability when manufacturing a color filter.

Pigments may be used after pretreatment with water soluble inorganic salts and humectants. When the pigment is used after pretreatment, the primary particle diameter of the pigment can become finer.

Pretreatment may be performed by kneading the pigment with a water-soluble inorganic salt and a wetting agent, and then filtering and washing the kneaded pigment.

The kneading may be performed at a temperature ranging from 40°C to 100°C, and filtration and washing may be performed by filtering the pigment after washing away the inorganic salt with water and the like.

Examples of water-soluble inorganic salts may be sodium chloride, potassium chloride, and the like, but are not limited thereto. The wetting agent can uniformly mix and pulverize the pigment and the water-soluble inorganic salt, and examples of the wetting agent can include alkylene glycol monoalkyl ethers such as ethylene glycol monoethyl ether, propylene glycol monomethyl ether, diethylene glycol monomethyl ether, etc. ethers; alcohols such as ethanol, isopropanol, butanol, hexanol, cyclohexanol, ethylene glycol, diethylene glycol, polyethylene glycol, glycerol polyethylene glycol, and may be used alone or in combination One or a combination of more than two.

The pigment after kneading may have an average particle diameter of 5 nm to 200 nm, for example, 5 nm to 150 nm. When the average particle diameter of the pigment is within the above range, the stability in the pigment dispersion is improved and the resolution of the picture element may be reduced.

The pigment dispersion liquid according to the embodiment may contain a dispersant and a solvent described below as well as a solid pigment and a dispersion resin. The solid pigment may be contained in an amount of 5% to 20% by weight, for example, 8% to 15% by weight, based on the total amount of the pigment dispersion.

Another embodiment provides a photosensitive resin composition including a pigment dispersion.

The pigment dispersion liquid may be contained in an amount of 50% by weight to 90% by weight based on the total amount of the photosensitive resin composition. In general, the photosensitive resin composition uses a high content of colorant, for example, 50% by weight to 90% by weight, based on the total amount of the photosensitive resin composition, in order to reproduce high color, wherein there may be a patternable colorant as described above. The problem of chemical shrinkage. However, the pigment dispersion according to one embodiment can reproduce high color and maintain excellent patternability by controlling the weight average molecular weight and acid value of the pigment of a specific color and the dispersion resin capable of dispersing the pigment and using pigment dispersions of different colors properties regardless of the high content as described above.

For example, the photosensitive resin composition may further include a binder resin, a photopolymerizable monomer, a photopolymerization initiator, and a solvent.

( binder resin )

The binder resin may include an indole-based binder resin, an acrylic binder resin, or a combination thereof. The indole-based resin may be a conventional curable resin (or photosensitive resin) composition, and may be generally used, for example, as disclosed in Korean Patent Application Laid-Open No. 10-2018-0067243, but is not limited thereto.

For example, the binder resin may include alone or two or more different acrylic binder resins.

The weight average molecular weight of the acrylic binder resin may be 3,000 g/mol to 150,000 g/mol, such as 5,000 g/mol to 50,000 g/mol, such as 20,000 g/mol to 30,000 g/mol. When the acrylic binder resin has a weight average molecular weight within the range, the photosensitive resin composition has good physical and chemical properties, proper viscosity, and close contact property with the substrate during the manufacture of the color filter.

The acid value of the acrylic binder resin may be 15 mg potassium hydroxide/g to 60 mg potassium hydroxide/g, and specifically 20 mg potassium hydroxide/g to 50 mg potassium hydroxide/g. When the acid value of the acrylic binder resin is within the range, the resolution of the graphic element pattern is improved.

The acrylic binder resin may be the same as described for the dispersion resin constituting the pigment dispersion liquid except for the weight average molecular weight and acid value.

When the binder resin further includes an indole-based binder resin and an acrylic binder resin, it can effectively achieve low reflection characteristics and improve resolution.

For example, when the binder resin includes an acrylic binder resin and a xylenoid-based binder resin, the xylenoid-based binder resin may be included in an amount greater than that of the acrylic binder resin. When the xylenoid-based binder resin is included in an amount greater than that of the acrylic binder resin, it may be more advantageous to achieve low reflection characteristics and excellent resolution at the same time. Additionally, it may be beneficial to improve developability and process margins.

The binder resin may further include a polyimide-based binder resin, a polyurethane-based binder resin, or a combination thereof other than the indole-based binder resin and the acrylic binder resin.

The weight average molecular weight of the xenole-based binder resin may be 1,000 g/mol to 50,000 g/mol, and specifically, 3,000 g/mol to 35,000 g/mol. When the weight average molecular weight of the xenole-based binder resin is within the above range, excellent patternability and developability can be obtained when manufacturing a color filter.

The binder resin may be included in an amount of 0.1% to 5% by weight, for example, 0.1% to 3% by weight, based on the total amount of the photosensitive resin composition. When the binder resin is contained within the above range, the viscosity is properly maintained, and thus patternability, handleability, and developability are excellent in manufacturing a color filter.

( photopolymerizable monomer )

The photopolymerizable monomer may be a monofunctional or polyfunctional ester of (meth)acrylic acid containing at least one ethylenically unsaturated double bond.

The photopolymerizable monomer has an ethylenically unsaturated double bond, and thus can cause sufficient polymerization during exposure in a pattern forming process, and form a pattern having excellent heat resistance, light resistance, and chemical resistance.

The photopolymerizable monomer can be, for example, ethylene glycol di(meth)acrylate, diethylene glycol di(meth)acrylate, triethylene glycol di(meth)acrylate, propylene glycol di(meth)acrylate , neopentyl glycol di(meth)acrylate, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, bisphenol A di(meth)acrylate ) acrylate, pentaerythritol di(meth)acrylate, pentaerythritol (meth)acrylate, pentaerythritol tetra(meth)acrylate, pentaerythritol hexa(meth)acrylate, dipentaerythritol (meth)acrylate, dipentaerythritol Tri(meth)acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, bisphenol A epoxy (meth)acrylate, ethylene glycol monomethyl ether (methyl) ) acrylate, trimethylolpropane tri(meth)acrylate, tri(meth)acryloxyethyl phosphate, novolac epoxy (meth)acrylate, or combinations thereof.

Commercially available examples of photopolymerizable monomers are as follows. Monofunctional (meth)acrylates may include Aronix M-101 ^® , Aronix M-111 ^® , Aronix M -114 ^® ; Nippon Kayaku Co., Ltd.'s KAYARAD TC-110S ^® , Kayarad TC-120S ^® ; Osaka Organic Chemical Ind., Ltd.) V-158 ^® , V-2311 ^® and the like. Examples of difunctional (meth)acrylates may include Anix M- ^210® , Anix M- ^240® , Anix M- ^6200® of Toa Gosei Chemical Industry Co., Ltd.; Allard HDDA ^® , Cayallade HX-220 ^® , Cayallade R-604 ^® ; V-260 ^® , V-312 ^® , V-335HP ^® of Osaka Organic Chemical Industry Co., Ltd., and the like. Examples of trifunctional (meth)acrylates may include Anix M-309 ^® , Anix M-400 ^® , Anix M-405 ^® , Anix M-450 ^® available from Toa Gosei Chemical Industry Co., Ltd. , Anix M-7100 ^® , Anix M-8030 ^® , Anix M-8060 ^® and similar; Kayallade TMPTA ^® , Kayallade DPCA-20 ^® , Kayarad DPCA-30 ^® , Kayarad DPCA-60 ^® , Kayarad DPCA-120 ^® ; Osaka Yuki Kayaku Kogyo Co. Ltd.’s V-295 ^® , V-300 ^® , V-360 ^® , V-GPT ^® , V-3PA ^® , V-400 ^® and the like. These may be used alone or in admixture of two or more.

Photopolymerizable monomers may be treated with acid anhydrides to improve developability.

The photopolymerizable monomer may be included in an amount of 0.5% to 10% by weight, for example, 0.5% to 5% by weight, based on the total amount of the photosensitive resin composition. When the photopolymerizable monomer is contained within the range, the photopolymerizable monomer is sufficiently cured during exposure in the pattern forming process and has excellent reliability of patterns, excellent heat resistance, light resistance, and chemical resistance, And has excellent resolution and close contact properties.

( photopolymerization initiator )

Photopolymerization initiators include oxime-based initiators (compounds) and acetophenone-based initiators (compounds). A mixture of two types of photopolymerization initiators may be used with the aforementioned colorant composition to provide a photosensitive resin composition capable of achieving a low cone angle.

Examples of acetophenones can be 2,2'-diethoxyacetophenone, 2,2'-dibutoxyacetophenone, 2-hydroxy-2-methylpropiophenone, p-tert-butyl Trichloroacetophenone, p-tert-butyldichloroacetophenone, 4-chloroacetophenone, 2,2'-dichloro-4-phenoxyacetophenone, 2-methyl-1-(4- (Methylthio)phenyl)-2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1-(4-morpholinophenyl)-butan-1-one and its analogues.

Examples of oxime compounds can be O-acyl oxime compounds, 2-(o-phthalyl oxime)-1-[4-(phenylthio)phenyl]-1,2-octanedione, 1-( O-acetyloxime)-1-[9-ethyl-6-(2-methylbenzoyl)-9H-oxazol-3-yl]ethanone, O-ethoxycarbonyl-α-oxyamino- 1-Phenylpropan-1-one and the like. Specific examples of O-acyl oxime compounds can be 1,2-octanedione, 2-dimethylamino-2-(4-methylbenzyl)-1-(4-morpholin-4-yl- Phenyl)-butan-1-one, 1-(4-phenylthiophenyl)-butane-1,2-dione 2-oxime-O-benzoate, 1-(4-phenylthio phenyl)-octane-1,2-dione 2-oxime-O-benzoate, 1-(4-phenylthiophenyl)-oct-1-one oxime-O-acetate and 1 -(4-Phenylthiophenyl)-butan-1-one oxime-O-acetate.

For example, the oxime-based initiator may be included in an amount equal to or greater than the amount of the acetophenone-based initiator.

For example, the oxime-based initiator may be included in an amount up to 9 times the content of the acetophenone-based initiator.

When the content relationship between the oxime-based initiator and the acetophenone-based initiator satisfies the above configuration, the taper angle of the pattern in the photosensitive resin layer can be further reduced.

In addition to the compounds, the photopolymerization initiator may contain oxazole-based compounds, diketone-based compounds, boronic acid-based compounds, diazo-based compounds, imidazole-based compounds, biimidazole-based compounds, fluorenyl compounds, and the like.

The photopolymerization initiator may contain the compounds exemplified above alone or in combination of two or more compounds.

A photopolymerization initiator may be used together with a sensitizer capable of causing a chemical reaction by absorbing light and becoming an excited state and then transferring its energy.

Examples of the sensitizer may be tetraethylene glycol bis-3-mercaptopropionate, pentaerythritol tetra-3-mercaptopropionate, dipentaerythritol tetra-3-mercaptopropionate, and the like.

The photopolymerization initiator may be included in an amount of 0.01% to 5% by weight, for example, 0.01% to 3% by weight, based on the total amount of the photosensitive resin composition. When the photopolymerization initiator is contained within the range, sufficient photopolymerization occurs during exposure in the pattern forming process, excellent reliability can be achieved, heat resistance, light resistance and chemical resistance of the pattern can be improved, resolution degree and close contact characteristics, and can prevent decrease in transmittance due to non-reaction initiator.

( solvent )

As the solvent, a material having compatibility with, but not reacting with, the pigment dispersion liquid, the photopolymerization initiator, the photopolymerizable monomer, and the binder resin can be used.

Examples of solvents may include alcohols such as methanol, ethanol, and the like; ethers such as dichloroethyl ether, n-butyl ether, diisoamyl ether, methylphenyl ether, tetrahydrofuran, and the like; glycol ethers such as ethylene Glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol dimethyl ether (EDM) and similar; ethylene glycol ether acetates such as ethylene glycol ethyl ether methyl acetate, ethylene glycol ethyl ether acetate Ethyl esters, diethyl glycol ether acetate, and the like; carbitols such as methyl ethyl carbitol, diethyl carbitol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, Diethylene glycol dimethyl ether, diethylene glycol ethyl methyl ether, diethylene glycol diethyl ether, and the like; propylene glycol alkyl ether acetates, such as propylene glycol methyl ether acetate, propylene glycol propyl ether acetate, and analogues; aromatic hydrocarbons such as toluene, xylene, and the like; ketones such as methyl ethyl ketone, cyclohexanone, 4-hydroxy-4-methyl-2-pentanone, methyl-n-acetone, methyl -n-butyl ketone, methyl-n-pentanone, 2-heptanone and the like; alkyl esters of saturated aliphatic monocarboxylates such as ethyl acetate, n-butyl acetate, isobutyl acetate and the like; milk esters such as methyl lactate, ethyl lactate and the like; alkyl oxyacetates such as methyl oxyacetate, ethyl oxyacetate, butyl oxyacetate and the like; alkyl alkoxyacetates Esters such as methyl methoxyacetate, ethyl methoxyacetate, butyl methoxyacetate, methyl ethoxyacetate, ethyl ethoxyacetate, and the like; alkyl 3-oxypropionates , such as methyl 3-oxypropionate, ethyl 3-oxypropionate, and the like; alkyl 3-alkoxypropionate, such as methyl 3-methoxypropionate, 3-methoxy Ethyl propionate, ethyl 3-ethoxypropionate, methyl 3-ethoxypropionate, and the like; alkyl 2-oxypropionates such as methyl 2-oxypropionate, 2- Ethyl oxypropionate, propyl 2-oxypropionate, and the like; alkyl 2-alkoxypropionate, such as methyl 2-methoxypropionate, ethyl 2-methoxypropionate , ethyl 2-ethoxypropionate, methyl 2-ethoxypropionate, and the like; 2-oxy-2-methylpropionates such as methyl 2-oxy-2-methylpropionate esters, ethyl 2-oxy-2-methylpropionate; alkyl monooxymonocarboxylates of alkyl 2-alkoxy-2-methylpropionates, such as 2-methoxy-2- Methyl methylpropionate, ethyl 2-ethoxy-2-methylpropionate, and the like; esters such as 2-hydroxyethyl propionate, 2-hydroxy-2-methylethyl propionate, acetic acid Hydroxyethyl esters, 2-hydroxy-3-methylmethyl butyrate and similar; ketoesters such as ethyl pyruvate and similar; high boiling point solvents such as N-methylformamide, N,N- Dimethylformamide, N-methylformamide, N-methylacetamide, N,N-dimethylacetamide, N-methylpyrrolidone, dimethylsulfoxide, benzyl ether, Dihexyl ether, acetylacetone, isophorone, caproic acid, octanoic acid, 1-octanol, 1-nonanol, benzyl alcohol, benzyl acetate, ethyl benzoate, diethyl oxalate, maleic acid Diethyl ester, gamma-butyrolactone, ethylene carbonate, propylene carbonate, ethylene glycol ether phenyl acetate, and the like.

Considering compatibility and reactivity, it is desirable to use ketones such as cyclohexanone and the like; glycol ethers such as ethylene glycol monoethyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether and the like; Glycol alkyl ether acetates such as ethylene glycol ethyl ether ethyl acetate and the like; esters such as 2-hydroxyethyl propionate and the like; carbitols such as diethylene glycol monomethyl ether and the like and propylene glycol glycol alkyl ether acetates such as propylene glycol monomethyl ether acetate, propylene glycol propyl ether acetate, and the like.

Based on the total amount of the photosensitive resin composition, the solvent may be contained in a remaining amount, such as 20% to 70% by weight, such as 20% to 60% by weight, such as 25% to 55% by weight. When the solvent is included in the range, the photosensitive resin composition may have an appropriate viscosity, thereby improving the coating properties of the color filter.

( other additives )

Meanwhile, the photosensitive resin composition may further include malonic acid, 3-amino-1,2-propanediol, silane coupling agent, leveling agent, fluorine-based surfactant, free radical polymerization initiator or a combination thereof.

The silane coupling agent may have reactive substituents, such as vinyl, carboxyl, methacryloxy, isocyanate, and epoxy, in order to improve the intimate contact property with the substrate.

Examples of silane coupling agents can be trimethoxysilyl benzoic acid, γ-methacryloxypropyl trimethoxysilane, vinyl triacetyloxysilane, vinyl trimethoxysilane, γ - isocyanatopropyltriethoxysilane, γ-polysaccharide glycidyltrimethoxysilane, β-(3,4-epoxycyclohexyl)ethyltrimethoxysilane and the like, which may be used alone or Use as a mixture of 2 or more types.

Based on 100 parts by weight of the photosensitive resin composition, the silane coupling agent may be included in an amount of 0.01 to 10 parts by weight. When the silane-based coupling agent is contained within the above range, close contact properties and storage properties are improved.

In addition, the photosensitive resin composition may further include a surfactant such as a fluorine-based surfactant to improve coating properties and prevent defect formation as necessary.

Examples of the fluorine-based surfactant may be commercially available fluorine-based surfactants such as BM- ^1000® , BM- ^1100® and the like from BM Chemie Inc.; Dainippon Ink Chemical Industry Co., Ltd. ( Dainippon Ink Kagaku Kogyo Co.) F142D ^® , F172 ^® , F173 ^® , F183 ^® , F554 ^® and the like; FULORAD FC-135 ^® , FULORAD FC- 170C ^® , Fullerard FC-430 ^® , Fullerard FC-431 ^® and the like; SURFLON S-112 ^® from ASAHI Glass Co., Ltd., Throron S-113 ^® , Thrawn S-131 ^® , Thrawn S-141 ^® , Thrawn S-145 ^® and similar; SH-28PA ^® , SH-190 ® , SH-193 ^{® ,} SZ-6032 ^® , SF ^-8428® and the like.

The fluorine-based surfactant may be included in an amount of 0.001 to 5 parts by weight based on 100 parts by weight of the photosensitive resin composition. When the surfactant is contained within the above range, coating uniformity is ensured, staining does not occur, and wettability of an IZO substrate or a glass substrate is improved.

In addition, unless properties are deteriorated, the photosensitive resin composition may further contain other additives such as oxidation inhibitors, stabilizers, and the like in predetermined amounts.

Another embodiment provides a photosensitive resin layer manufactured by exposing, developing, and curing the aforementioned photosensitive resin composition.

A method of forming a pattern in the photosensitive resin layer is as follows.

(1) Coating and film formation

The photosensitive resin composition is coated on a substrate subjected to predetermined pretreatment, such as a glass substrate or an IZO substrate and the like, using a spin coating or slit coating method, a roll coating method, a screen printing method, a coater method, and the like to It has a desired thickness, and is heated at about 70° C. to about 100° C. for 1 minute to 10 minutes through a VCD process or the like to remove the solvent and form a photosensitive resin layer.

(2) Exposure

In order to form a desired pattern, a mask consisting of a half-tone portion on which a black matrix pattern is applied and a full-tone portion on which a columnar spacer pattern is applied is inserted, and then 200 nm to 500 nm of actinic rays are irradiated to the obtained layer of photosensitive resin. As a light source for radiation, low-pressure mercury lamps, high-pressure mercury lamps, ultra-high-pressure mercury lamps, metal halide lamps, argon lasers, etc. can be used, and in some cases, X-rays, electron beams, and the like can be used .

When using a high pressure mercury lamp, the exposure process uses a light dose of, for example, 500 mJ/cm2 or less (using a 365 nm sensor). However, the light dose may vary depending on the kind of various components, their combination ratio, and dry film thickness.

(3) Development

In the developing method, after the exposure process, an aqueous alkali solution is used as a developing solution to dissolve and remove unnecessary parts, thereby leaving only exposed parts to form a pattern.

(4) Post-processing

There is a post-heating process for obtaining a pattern having improved heat resistance, light resistance, close contact property, crack resistance, chemical resistance, high strength and Storage stability.

Another embodiment provides a color filter including a photosensitive resin layer.

Another embodiment provides a display device including color filters.

The display device may be, for example, a liquid crystal display (LCD) (for organic LED), a solid-state imaging device, and the like but is not necessarily limited thereto.

Hereinafter, the present invention is shown in more detail with reference to examples. However, the following examples are only preferred examples of the present invention, and the present invention is not limited by the following examples.

( example )

( Preparation of Green Pigment Dispersion )

Preparation example 1-1

By mixing the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g with C.I. Pigment Green 58 (ENF Technology Co., Ltd.) in a dispersant The green pigment dispersion is prepared by mixing under the hood and performing a dispersing process with a dispersing device (such as a bead mill and the like). An optional dispersion process can be performed by further adding a solvent and/or a pigment derivative thereto.

Preparation example 1-2

In addition to using the first dispersion resin with a weight average molecular weight of 8000 g/mol and an acid value of 140 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mol and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for the dispersion resin.

Preparation example 1-3

In addition to using the first dispersion resin with a weight average molecular weight of 12000 g/mole and an acid value of 100 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for the dispersion resin.

Preparation example 1-4

In addition to using the first dispersion resin with a weight average molecular weight of 12000 g/mole and an acid value of 140 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for a dispersion resin.

Comparative Preparation Examples C-1

In addition to using the first dispersion resin with a weight average molecular weight of 8000 g/mole and an acid value of 90 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for a dispersion resin.

Comparative Preparation Examples C-2

In addition to using the first dispersion resin with a weight average molecular weight of 12000 g/mole and an acid value of 150 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for a dispersion resin.

Comparative Preparation Examples C-3

In addition to using the first dispersion resin with a weight average molecular weight of 7000 g/mole and an acid value of 100 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for a dispersion resin.

Comparative Preparation Examples C-4

In addition to using the first dispersion resin with a weight average molecular weight of 13000 g/mole and an acid value of 140 mg potassium hydroxide/g instead of the first dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 100 mg potassium hydroxide/g A green pigment dispersion was prepared in the same manner as in Preparation Example 1-1 except for a dispersion resin.

(preparation of yellow pigment dispersion)

Preparation example 2-1

By mixing the second dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 95 mg potassium hydroxide/g with C.I. Pigment Yellow 185 (ENF Technology Co., Ltd.) mill and the like) for the dispersion process to prepare a yellow pigment dispersion. An optional dispersion process can be performed by further adding a solvent and/or a pigment derivative thereto.

Preparation example 2-2

Except that the second dispersion resin with a weight average molecular weight of 12000 g/mole and an acid value of 95 mg potassium hydroxide/g is used instead of the second dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 95 mg potassium hydroxide/g Except for the didisperse resin, a yellow pigment dispersion was prepared in the same manner as in Preparation Example 2-1.

Comparative Preparation Examples C-5

Except that the second dispersion resin with a weight average molecular weight of 7000 g/mole and an acid value of 95 mg potassium hydroxide/g is used instead of the second dispersion resin having a weight average molecular weight of 8000 g/mole and an acid value of 95 mg potassium hydroxide/g Except for the didisperse resin, a yellow pigment dispersion was prepared in the same manner as in Preparation Example 2-1.

Comparative Preparation Examples C-6

Except that the second dispersion resin with a weight average molecular weight of 13000 g/mol and an acid value of 95 mg KOH/g is used instead of the second dispersion resin having a weight average molecular weight of 8000 g/mol and an acid value of 95 mg KOH/g Except for the didisperse resin, a yellow pigment dispersion was prepared in the same manner as in Preparation Example 2-1.

Comparative Preparation Examples C-7

In addition to using the second dispersion resin with a weight average molecular weight of 10000 g/mol and an acid value of 100 mg potassium hydroxide/g instead of the second dispersion resin having a weight average molecular weight of 8000 g/mol and an acid value of 95 mg potassium hydroxide/g Except for the didisperse resin, a yellow pigment dispersion was prepared in the same manner as in Preparation Example 2-1.

( Preparation of photosensitive resin composition )

example 1 to instance 6 and comparative examples 1 to comparative example 4

Each photosensitive resin composition was prepared to have the composition shown in Table 1 in which a photopolymerization initiator was added to and dissolved in a solvent by stirring at room temperature for 1 hour. Subsequently, a binder resin and a photopolymerizable monomer were added thereto, and then stirred at room temperature for 1 hour. Subsequently, other additives were added thereto, and then stirred at room temperature for 1 hour. Next, each pigment dispersion liquid was added thereto, and then stirred at room temperature for 2 hours, and the foregoing solution was filtered three times to remove impurities, thereby preparing photosensitizers according to Examples 1 to 6 and Comparative Examples 1 to 4. Resin composition. The following components are used to prepare the photosensitive resin composition. (A) Acrylic binder resin Acrylic adhesive resin (SP-RY16, Showa Denko K.K.) (B) Photopolymerizable monomer (B-1) DPHA (Nippon Kayaku Co., Ltd.) (B-2) M2100 (Miwon Specialty) (C) Photopolymerization initiator (C-1) OXE01 (BASF) (C-2) OXE02 (BASF) (D) Pigment dispersion (D-1) Preparation Example 1-1 (D-2) Preparation Example 1-2 (D-3) Preparation Example 1-3 (D-4) Preparation Examples 1-4 (D-5) Preparation Example 2-1 (D-6) Preparation Example 2-2 (D-7) Comparative Preparation Example C-1 (D-8) Comparative Preparation Example C-2 (D-9) Comparative Preparation Example C-3 (D-10) Comparative Preparation Example C-4 (D-11) Comparative Preparation Example C-5 (D-12) Comparative Preparation Example C-6 (D-13) Comparative Preparation Example C-7 (E) Solvent Propylene glycol monomethylethylacetate (PGMEA, Sigma-Aldrich Co.,Ltd.) (F) Other additives (F-1) Fluorine-based surfactant (F-554, DIC Co., Ltd.) (F-2) Coupling agent (KBM-503, ShinEtsu Chemical Co.)

(Table 1) (unit; weight %) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative example 2 Comparative example 3 Comparative Example 4 (A) Acrylic binder resin 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 (B) Photopolymerizable monomer (B-1) 1 1 1 1 1 1 1 1 1 1 (B-2) 0.77 0.77 0.77 0.77 0.77 0.77 0.77 0.77 0.77 0.77 (C) Photopolymerization initiator (C-1) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 (C-2) 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 (D) colorant (D-1) 48.1 - - - 51.31 - - - - - (D-2) - 48.1 - - - 41.2 - - - - (D-3) - - 48.1 - - - - - - - (D-4) - - - 48.1 - - - - - - (D-5) 23.61 - 23.61 - 20.4 - - - - - (D-6) - 23.61 - 23.61 - 30.51 - - - - (D-7) - - - - - - 48.1 - - - (D-8) - - - - - - - 48.1 - - (D-9) - - - - - - - - 48.1 - (D-10) - - - - - - - - - 48.1 (D-11) - - - - - - 23.61 - - 23.61 (D-12) - - - - - - - 23.61 - - (D-13) - - - - - - - - 23.61 - (E) Solvent 25.45 25.45 25.45 25.45 25.45 25.45 25.45 25.45 25.45 25.45 (F) Other additives (F-1) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 (F-2) 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08

Evaluate 1 : Patternability Evaluation

The photosensitive resin compositions according to Examples 1 to 6 and Comparative Example 1 to Comparative Example 4 were capable of forming a predetermined thickness of each sample by using a coater (MIKASA Co., Ltd.) per minute and then pre-baked it on a 90° C. hot plate, exposed it to a light exposer under the conditions of dose: 40 mJ and gap: 200 μm, and developed it to form a pattern. Herein, _the developer was prepared by diluting the _Na2CO3 solution, and the time (seconds) for pattern presentation was measured (BP). Herein, BP should be at least 40 seconds or less than 40 seconds. After the development, the pattern substrate is baked in an oven at 230° C. for 20 minutes, thereby forming a pattern. Confirm the pattern by zooming the optical microscope optically 500X relative to the width measurement. The pattern was confirmed by size measurement with respect to a width of 100 μm using an optical microscope, and Table 2 shows the results of evaluation with the naked eye.

(Table 2) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative example 2 Comparative example 3 Comparative Example 4 the remains ◎ ◎ ◎ ◎ ○ ○ x △ x △ Evaluation Criteria for Residue Content ◎: Very Excellent ○: Excellent △: Poor X: Very Poor

Evaluate 2 : Evaluation of Membrane Residue Ratio

The photosensitive resin composition according to Example 1 to Example 6 and Comparative Example 1 to Comparative Example 4 was coated on a glass substrate to a thickness of 3 micrometers with a spin coater (Applicator (Opticoat) MS-A150, Mikasa Co., Ltd.), respectively, and Then soft bake at 80° C. for 120 seconds on a hot plate, and expose at 60 mJ with an exposure device (ghi broadband, Ushio Inc.). Subsequently, the applied composition was developed with a 0.2% by weight potassium hydroxide (KOH) aqueous solvent by using a developer (SSP-200, SVS). Subsequently, the developed substrates were respectively hard baked in a convection oven at 180° C. for 30 minutes. The thickness (T1) of the pattern after development and the thickness (T2) of the pattern after hard-baking were measured to calculate a film remaining ratio (%) according to Equation 1, and the results are shown in Table 3. [Equation 1] Membrane residue ratio (%) = (T ₂ /T ₁ ) x 100

(table 3) Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Comparative Example 1 Comparative example 2 Comparative example 3 Comparative Example 4 Pattern film residue ratio (%) 82.0 81.5 82.2 82.3 80.3 80.9 77.0 78.2 76.4 78.4

Referring to Table 2 and Table 3, the photosensitive resin composition according to one embodiment realizes high color, and exhibits excellent patternability according to the pigment of a specific color by controlling the weight average molecular weight and acid value of the dispersion resin including the pigment dispersion liquid and film residue ratio. In addition, when the weight ratio of the green pigment dispersion liquid to the yellow pigment dispersion liquid is 1.41:1 to 2.46:1, the patternability improving effect is maximized.

While the invention has been described in connection with what are presently regarded as practical example embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but on the contrary, the invention is intended to cover various embodiments included within the spirit and scope of the patent application. Modifications and equivalent arrangements. Therefore, the foregoing embodiments should be understood as exemplary rather than restrictive of the present invention in any way.

none.

none.

Claims (12)

A pigment dispersion, comprising: A green pigment dispersion, comprising a first dispersion resin having a weight average molecular weight of 8000 g/mole to 12000 g/mole and an acid value of 100 mg potassium hydroxide/g to 140 mg potassium hydroxide/g, and a green pigment; as well as The yellow pigment dispersion comprises a second dispersion resin with a weight average molecular weight of 8000 g/mole to 12000 g/mole and an acid value of less than 100 mg potassium hydroxide/g and a yellow pigment. The pigment dispersion liquid as described in claim item 1, wherein The first dispersion resin and the second dispersion resin are each independently an acrylic resin. The pigment dispersion liquid as described in claim item 1, wherein The weight ratio of the green pigment dispersion to the yellow pigment dispersion is 1.41:1 to 2.46:1. The pigment dispersion liquid as described in claim item 1, wherein The pigment dispersion liquid further includes a dispersant and a solvent. A photosensitive resin composition, comprising the pigment dispersion liquid described in any one of claim 1 to claim 4. The photosensitive resin composition as described in Claim 5, wherein The pigment dispersion liquid is contained in an amount of 50% by weight to 90% by weight based on the total amount of the photosensitive resin composition. The photosensitive resin composition as described in Claim 5, wherein The photosensitive resin composition further includes a binder resin, a photopolymerizable monomer, a photopolymerization initiator, and a solvent. The photosensitive resin composition as described in claim item 7, wherein According to the total amount of the photosensitive resin composition, The photosensitive resin composition comprises: 0.1% to 5% by weight of said binder resin; 0.5% to 10% by weight of said photopolymerizable monomer; 0.01% to 5% by weight of the photopolymerization initiator; 50% to 90% by weight of the pigment dispersion; and The remaining amount of the solvent. The photosensitive resin composition as described in claim item 7, wherein The photosensitive resin composition further includes malonic acid, 3-amino-1,2-propanediol, silane coupling agent, leveling agent, fluorine-based surfactant, free radical polymerization initiator or a combination thereof. A photosensitive resin layer manufactured using the photosensitive resin composition described in Claim 5. A color filter comprising the photosensitive resin layer as claimed in claim 10. A display device, comprising the color filter described in claim 11.