KR101288560B1 - Ink composition and color filter prepared by using the same - Google Patents

Abstract

(A) a polyfunctional monomer comprising a compound represented by the following formula (1); (B) acrylic resin; (C) pigments; And (D) a solvent.

[Formula 1]

(In Formula 1, the definitions of R1, R2, R3, X1, m and n are as described in the detailed description of the specification.)

Ink, inkjet, polyfunctional monomer, dendrimer, color filter

Description

Ink composition and color filter manufactured using the same {INK COMPOSITION AND COLOR FILTER PREPARED BY USING THE SAME}

The present invention relates to an ink composition, a method for manufacturing a color filter pixel, and a color filter using the same.

The color filter is used in a liquid crystal display device, an optical filter of a camera, and the like, and is manufactured by coating a fine region colored with three or more colors on a solid state imaging device or a transparent substrate. Such colored thin films are usually formed by dyeing, printing, electrodeposition, pigment dispersion, inkjet, or the like. Currently, this method is applied to manufacturing LCDs of mobile phones, laptops, monitors, TVs, and the like.

In the dyeing method, an image having a dyeing base material such as natural photosensitive resin such as gelatin, amine-modified polyvinyl alcohol, and amine-modified acrylic resin is formed on a glass substrate in advance, and then dyed with a dye such as a direct dye to form a colored thin film. However, in order to form a multi-colored thin film on the same substrate, it is necessary to perform flameproof processing every time the color is changed, so that the process becomes very complicated and the time is delayed. In addition, the clarity and dispersibility of the commonly used dyes and resins themselves are good, but there are disadvantages in that light resistance, moisture resistance and heat resistance, which are the most important characteristics, are poor.

In the printing method, printing is performed using the ink which disperse | distributed the pigment to thermosetting or photocurable resin, and a colored thin film is formed by hardening with heat or light. According to this method, the material cost can be reduced compared to other methods, but it is difficult to form highly precise and detailed images, and the thin film layer formed is not uniform. Korean Patent Publication No. 1996-0011513 proposes a method of manufacturing a color filter using an inkjet method, and since the colored photosensitive resin composition sprayed from the nozzle is dye-like for printing delicate and accurate pigments, it is similar to the dyeing method. Durability and heat resistance are inferior.

In contrast, Korean Patent Publication No. 1996-0029904 proposes an electrodeposition method using an electroprecipitation method, which can form a precise colored thin film and has a characteristic of excellent heat resistance and light resistance due to the use of a pigment. When the pixel size is precise and the electrode pattern is fine, there is a problem that color unevenness due to electrical resistance appears at both ends or the thickness of the colored thin film becomes thick, which makes it difficult to apply to color filters requiring high precision.

On the other hand, the pigment dispersion method repeats a series of processes of coating a photopolymerizable composition containing a colorant on a transparent substrate provided with a black matrix, exposing it in the form of a pattern to be formed, and then removing a non-exposed portion with a solvent and thermally curing it. It is a method by which a colored thin film is formed. The pigment dispersion method has the advantage of improving heat resistance and durability, which are the most important properties of the color filter, and maintaining the film thickness uniformly. In addition, since the fine pattern is excellent in implementation and the manufacturing method is relatively easy, it is commonly adopted. For example, Japanese Patent Laid-Open No. Hei 7-140654, Japanese Patent Laid-Open No. Hei 10-254133 and the like have proposed a method of producing a color resist using pigment dispersion.

However, the above methods require a complicated process of coating, exposing, developing, and curing the red (R), green (G), and blue (B) photosensitive resin compositions, respectively, in order to form a pixel. As the number of control factors increases, it is difficult to manage yield. In addition, monitors, TVs, etc. have a variety of problems in the actual production process, such as to increase the thickness of the coating film as a high color reproduction ratio and contrast ratio is required.

In order to overcome this problem, a number of new process methods are recently used to replace the conventional pigment dispersion method, and an inkjet printing method is representative. The inkjet printing method is a method of forming a light blocking layer such as a black matrix on a glass substrate and injecting ink into the pixel space. The inkjet printing method eliminates the need for a separate coating, exposure, and development process in manufacturing the color filter, thereby reducing the material required for the process and simplifying the process.

In the inkjet method, in order for the color filter to have uniform and excellent color characteristics, the color layer between pixels must be uniformly formed. It should be free of nozzle clogging at the head during ink ejection and should fall in the same amount and number of drops in the pixel. Therefore, the interaction between the spray nozzle surface of the head and the color ink composition is a factor that greatly influences the spraying performance.

In addition, the pattern formed by using the inkjet method is a method of curing by heating to a temperature of about 200 ℃, such as the pattern formed by the pigment dispersion method, the curing degree of the monomer is lowered, the film strength is weakened, so that the heat resistance and chemical resistance Problems of deterioration may occur. In addition, the formed fine pattern may have a problem in that the pattern is peeled off when the adhesion to the substrate is weak, and the color filter manufactured by the inkjet method requires high reliability, such as heat resistance, chemical resistance and film strength, like the pigment dispersion method. If this characteristic is not satisfied, problems such as color change or pattern infringement may occur in a post process of the color filter.

One aspect of the present invention is excellent compatibility between the head and the ink, the nozzle is not clogged at the time of inkjet printing is excellent dischargeability, the pattern formed by using the excellent adhesion to the substrate, film strength, heat resistance, chemical resistance It is to provide an ink composition having excellent reliability.

Another aspect of the present invention is to provide a color filter manufactured using the ink composition.

One aspect of the present invention provides an ink composition comprising (A) a polyfunctional monomer containing a compound represented by the following formula (1), (B) acrylic resin, (C) pigment, and (D) solvent.

[Formula 1]

(In the formula 1,

R 1 and R 2 are each independently a hydrogen atom or COR 4, wherein R 4 is an alkenyl group having 2 to 10 carbon atoms,

R3 is an alkyl group having 1 to 5 carbon atoms,

X1 is the following Chemical Formula 1-1 or 1-2,

M is 4 when X1 is the following Formula 1-1, m is 6 when X1 is the following Formula 1-2,

n is an integer from 1 to 10.)

[Formula 1-1]

[Formula 1-2]

The ink composition comprises 1 to 30% by weight of the (A) polyfunctional monomer, 1 to 40% by weight of the (B) acrylic resin, 1 to 60% by weight of the (C) pigment, and the remaining amount of the (D) solvent. can do.

The (A) polyfunctional monomer may be represented by the following formula (2).

[Formula 2]

1 to 40% by weight of the acrylic resin (B) may be a copolymer of an ethylenically unsaturated monomer containing a carboxyl group.

The pigment (C) may be a phthalocyanine compound, an azo compound, an anthraquinone compound, an indigo compound, a perylene compound, a perinone compound, a dioxazine compound, a quinacridone compound, an isoindrinone compound, or a phthalon compound , Carbon black and a combination thereof may be selected.

The ink composition may further include an (E) leveling agent.

The (E) leveling agent may be included in an amount of 0.01 to 5% by weight based on the total amount of the ink composition.

The (E) leveling agent may be selected from the group consisting of fluorine compounds, silicon compounds, and combinations thereof.

Another aspect of the present invention provides a color filter manufactured using the ink composition.

Other aspects of the present invention are included in the following detailed description.

The ink composition according to an aspect of the present invention is excellent in ejection property, the color filter pattern using the same has excellent adhesion to the substrate, and excellent reliability such as film strength, heat resistance and chemical resistance.

Hereinafter, aspects of the present invention will be described in more detail. However, it should be understood that the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

An ink composition according to an aspect of the present invention includes (A) a polyfunctional monomer containing a compound represented by the following formula (1), (B) an acrylic resin, (C) a pigment, and (D) a solvent.

In addition, the ink composition may further include (E) leveling agent and (F) other additives.

[Formula 1]

(In the formula 1,

R 1 and R 2 are each independently a hydrogen atom or COR 4, wherein R 4 is an alkenyl group having 2 to 10 carbon atoms,

R3 is an alkyl group having 1 to 5 carbon atoms,

X1 is the following Chemical Formula 1-1 or 1-2,

M is 4 when X1 is the following Formula 1-1, m is 6 when X1 is the following Formula 1-2,

n is an integer from 1 to 10.)

[Formula 1-1]

[Formula 1-2]

Hereinafter, each component will be described in detail.

(A) polyfunctional monomer

The ink composition includes a compound represented by Chemical Formula 1 as a multifunctional monomer.

Specific examples of the polyfunctional monomer represented by Chemical Formula 1 include a compound represented by the following Chemical Formula 2.

[Formula 2]

In addition, the polyfunctional monomer may be used by mixing monomers generally used in conventional ink compositions or photosensitive resin compositions in addition to the general formula (1). For example, ethylene glycol diacrylate, triethylene glycol diacrylate, 1,4-butanediol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol diacrylate, pentaerythritol diacrylate, penta Erythritol triacrylate, dipentaerythritol diacrylate, dipentaerythritol triacrylate, dipentaerythritol pentaacrylate, pentaerythritol hexaacrylate, bisphenol A diacrylate, trimethylolpropane triacrylate, Novolac epoxy acrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, propylene glycol dimethacrylate, 1,4-butanediol dimethacrylate, 1,6- Selected from hexanediol dimethacrylate and the like and mixed with a compound represented by Formula 1 And it can be used.

The content of the multifunctional monomer may be 1 to 30% by weight, or 5 to 20% by weight based on the total amount of the ink composition. When the content of the multifunctional monomer is 1 to 30% by weight, the degree of curing after injecting the ink is sufficient, so that the reliability is excellent, the viscosity of the ink is appropriate, and the aging stability is excellent.

(B) Acrylic resin

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

The first ethylenically unsaturated monomer is an ethylenically unsaturated monomer containing one or more carboxyl groups, and specifically, may be selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, itaconic acid, fumaric acid, and combinations thereof.

The weight ratio of the first ethylenically unsaturated monomer may be 10 to 40% or 20 to 30% with respect to the total amount of the acrylic resin.

As said 2nd ethylenically unsaturated monomer, an alkenyl aromatic monomer, an unsaturated carboxylic ester compound, an unsaturated carboxylic acid amino alkyl ester compound, a carboxylic acid vinyl ester compound, an unsaturated carboxylic acid glycidyl ester compound, and vinyl cyanide Compound, unsaturated amide compounds, and combinations thereof.

Representative examples of the alkenyl aromatic monomers include styrene, α-methyl styrene, vinyl toluene, vinyl benzyl methyl ether, and the like; Representative examples of the unsaturated carboxylic acid ester compounds include methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate, 2-hydroxy ethyl acrylate, 2-hydride. Hydroxy ethyl methacrylate, 2-hydroxy butyl acrylate, 2-hydroxy butyl methacrylate, benzyl acrylate, benzyl methacrylate, cyclohexyl acrylate, cyclohexyl methacrylate, phenyl acrylate, phenyl methacrylate Rate; Representative examples of the unsaturated carboxylic acid amino alkyl ester compounds include 2-amino ethyl acrylate, 2-amino ethyl methacrylate, 2-dimethyl amino ethyl acrylate, 2-dimethyl amino ethyl methacrylate, and the like; Representative examples of the carboxylic acid vinyl ester compounds include vinyl acetate, vinyl benzoate, and the like; Representative examples of the unsaturated carboxylic acid glycidyl ester compounds include glycidyl acrylate, glycidyl methacrylate, and the like; Representative examples of the vinyl cyanide compound include acrylonitrile, methacrylonitrile and the like; Representative examples of the unsaturated amide compounds include, but are not limited to, acryl amide, methacryl amide, and the like. These unsaturated second ethylenically unsaturated monomers may be used alone or in combination of two or more.

The first ethylenically unsaturated monomer Specific examples of the acrylic resin containing a second ethylenically unsaturated monomer include methacrylic acid / benzyl methacrylate copolymer, methacrylic acid / benzyl methacrylate / styrene copolymer, methacrylic acid / benzyl methacrylate / 2-hydroxy ethyl methacrylate copolymer, methacrylic acid / benzyl methacrylate / styrene / 2-hydroxy ethyl methacrylate copolymer, and the like, but are not limited to these, alone or in combination You may mix and use the above.

The weight average molecular weight (Mw) of the acrylic resin may be 3,000 to 150,000, may be 5,000 to 50,000.

The acrylic resin is a factor that has the greatest influence on the resolution of pixels in the ink composition. For example, in the case of the methacrylic acid / benzyl methacrylate copolymer, the resolution of the pixel is clearly changed by the acid value and the weight average molecular weight. In this case, the best pixel resolution can be obtained when the content ratio of methacrylic acid / benzyl methacrylate is 25/75 (w / w) with an acid value of 80 to 120 mgKOH / g and a weight average molecular weight of 20,000 to 40,000. .

The amount of the acrylic resin may be 1 to 40% by weight, or may be 5 to 20% by weight based on the total amount of the ink composition. When the content of the acrylic resin is in the range of 1 to 40% by weight, the adhesion to the substrate is good, the ink can form a uniform film thickness, and after the color filter such as film strength, heat resistance, chemical resistance and afterimage great. In addition, the viscosity of the ink is suitable, the ejection property is good during inkjet printing, the crosslinkability is appropriate, and the surface smoothness is excellent.

(C) pigment

Examples of the pigments include phthalocyanine pigments, azo pigments, anthraquinone pigments, indigo pigments, perylene pigments, perinone pigments, dioxazine pigments, quinacridone pigments, isoindrinone pigments, and phthalone pigments. Organic pigments; And inorganic pigments such as titanium oxide, titanium black and carbon black may be used alone or in combination of two or more thereof.

Specific examples of the organic pigments include pigments in a color index, and C.I. Pigment yellow 1, 12, 13, 14, 15, 16, 17, 20, 24, 31, 53, 83, 86, 93, 94, 109 , 110, 117, 125, 128, 137, 138, 139, 147, 148, 150, 153, 154, 166, 173; C.I. Pigment Orange No. 13, 31, 36, 38, 40, 42, 43, 51, 55, 59, 61, 64, 65, 71, 73; C.I. Pigment Red No. 9, 97, 105, 122, 123, 144, 149, 166, 168, 176, 177, 180, 192, 215, 216, 224 , 242, 254, 264, 265; C.I. Pigment blue 15, 15: 3, 15: 4, 15: 6, 60; C.I. Pigment violet 1, 19, 23, 29, 32, 36, 38; C.I. Pigment Green No. 7, 36; C.I. Pigment brown 23, 25, etc. are mentioned.

The pigment content may be 1 to 60% by weight, or 5 to 50% by weight based on the total amount of the ink composition. When the content of the pigment is in the range of 1 to 60% by weight, the color reproducibility is good, and the curing property and adhesion of the pattern are excellent.

(D) Solvent

The solvent may be a high boiling point solvent having a boiling point of 170 to 250 ℃ to prevent clogging of the nozzle during printing and to secure the color characteristics of the color filter.

Specific examples of the high boiling point solvent include 3-methoxy butyl acetate, diethylene glycol methyl ether acetate, diethylene glycol ethyl ether acetate, diethylene glycol butyl ether acetate, ethylene glycol butyl ether acetate, 1,3-butanediol diacetate , Propylene glycol n-propyl ether acetate, propylene glycol n-butyl ether acetate, dipropylene glycol n-propyl ether acetate, dipropylene glycol n-butyl ether acetate, propylene glycol diacetate, dipropylene glycol propyl ether, dipropylene glycol butyl And ether selected from the group consisting of tripropylene glycol methyl ether, diethylene glycol dibutyl ether, tripropylene glycol butyl ether, and combinations thereof.

In addition, the solvent may be used by mixing a low boiling point solvent having a boiling point of less than 170 ℃ with the high boiling point solvent in order to improve the color reproducibility, contrast ratio and storage stability of the ink required by the color filter.

As the low boiling point solvent, ethyl acetate, n-butyl acetate, isobutyl acetate, isopropyl acetate, n-propyl acetate, propylene glycol methyl ether acetate, propylene glycol ethyl ether acetate, 3-methoxy-1-propyl acetate, ethylene glycol Methyl ether acetate, ethylene glycol ethyl ether acetate, propylene glycol methyl ether, propylene glycol ethyl ether, propylene glycol propyl ether, ethylene glycol propyl ether, n-butyl propionate, ethyl 3-ethoxy propionate, n-pentyl prop It is possible to use one selected from the group consisting of cypionate, n-propyl propionate, propylene glycol methyl ether propionate and combinations thereof.

The high boiling point solvent and the low boiling point solvent may be used in a weight ratio of 90:10 to 50:50. When the content of the high boiling point solvent is less than the ratio, the drying speed of the ink increases due to the rapid volatilization of the solvent, so that clogging of the nozzle becomes frequent, it is difficult to maintain proper ejection performance, and when the ratio is exceeded, the viscosity increases. As a result, it is difficult to uniformly disperse, and the dispersibility and storage stability become poor, thereby making it difficult to maintain a high contrast ratio.

The content of the solvent in the ink composition may be included in the balance by subtracting the content of the other components from 100% by weight, it may be included in 40 to 90% by weight relative to the total amount of the ink composition. When the solvent is contained in 40 to 90% by weight, the discharge property is good, and the color characteristics are excellent even after the pattern formation.

(E) Leveling agent

In the ink composition, a leveling agent selected from the group consisting of a fluorine-based leveling agent, a silicon-based leveling agent, and a combination thereof may be used so that the pigment component is uniformly dispersed in the solvent and excellent in leveling property.

Examples of the fluorine-based leveling agent may be those made of polyether co-modified silicone, and specifically, 3M FC-430, F-475, or the like may be used alone or in combination of two or more thereof.

Examples of the silicone leveling agent include dimethylpolysiloxane and polyoxyalkylene dimethylene polysiloxane, in which polyether is modified.

The amount of the fluorine leveling agent or the silicon leveling agent may be added in an amount of 0.01 to 5% by weight, or 0.01 to 2% by weight, based on the total amount of the ink composition. When the amount of the leveling agent is added in an amount of 0.01 to 5% by weight, sufficient spreading and flatness of the ink can be ensured so that the ink is not filled or contamination that overflows or splashes into the openings of adjacent pixels does not occur.

(F) Other additives

The ink composition may optionally further include additives such as dispersants, surfactants, stabilizers, and the like, may include an epoxy compound to improve film hardness and chemical resistance, and to promote adhesion with a glass substrate. A silane coupling agent may also be included for this purpose.

The amount of the epoxy compound and the silane coupling agent added may be 0.01 to 5 wt% based on the total amount of the ink composition. When the addition amount of the epoxy compound and the silane coupling agent is in the range of 0.01 to 5% by weight, the degree of performance expression, shelf life, and process margin are appropriate.

The pixel manufacturing method for a color filter can use the inkjet injection method.

First, the ink composition according to an aspect of the present invention on the substrate by mono- or tri-color simultaneous printing by the inkjet injection method to form a pattern, and the pattern is heated to a temperature of 160 to 300 ℃ to cure for 20 to 150 minutes It comprises the step of.

For example, the ink composition may be sprayed with a thickness of 1.0 to 2.0 μm over several times depending on the number of colors required, or a pattern may be formed by spraying several colors at the same time and then cured to form a pixel for a color filter. .

A color filter according to another aspect of the present invention is prepared using the ink composition according to the aspect of the present invention.

Hereinafter, the above-described aspects of the present invention will be described in more detail with reference to the following examples. However, the following examples are for illustrative purposes only, and the present invention is not limited to the following examples.

Example 1

To prepare an ink composition by mixing the composition of Table 1.

[Table 1]

ingredient weight% (A) polyfunctional monomer Compound represented by the following formula (2) 10 (B) Acrylic resin Benzyl methacrylate / cyclohexyl methacrylate / styrene / methacrylic acid copolymer
(Amount ratio = 40/35/15/10, weight average molecular weight = 20,000) 4 (C) pigment C.I. Pigment Red No. 254/177 = 80/20 10 (D) Solvent Diethylene glycol butyl ether acetate (64.8 wt%)
Propylene Glycol Methyl Ether Acetate (10% by weight) 74.8 (E) Leveling agent (Silicone leveling agent)
SH8400 (Dow Corning Toray) One (F) Other additives (Coupling agent)
Vinyltrimethoxy silane 0.2 Ink composition of Example 1 100

[Formula 2]

[Example 2]

In Example 1, as the (1) polyfunctional monomer,

Instead of 10% by weight of the compound represented by Formula 2,

An ink composition of Example 2 was prepared in the same manner as in Example 1, except that 5% by weight of the compound represented by Formula 2 and 5% by weight of dipentaerythritol hexaacrylate were used.

Comparative Example 1

In Example 1, as the (1) polyfunctional monomer,

Instead of the compound represented by Formula 2,

An ink composition of Comparative Example 1 was prepared in the same manner as in Example 1, except that dipentaerythritol hexaacrylate was used.

Comparative Example 2

In Example 1, as the (1) polyfunctional monomer,

Instead of the compound represented by Formula 2,

An ink composition of Comparative Example 2 was prepared in the same manner as in Example 1, except that pentaerythritol triacrylate was used.

Evaluation 1: Dischargeability Evaluation

The ink compositions of Examples 1 and 2 and Comparative Examples 1 and 2 were each sprayed with a liquid volume of 20 pL for 10 seconds after spraying once, and then 20 seconds after spraying once , repeatedly waiting for 10 seconds. The waiting time for generating nozzles of the inkjet head discharged unevenly by increasing the time was measured. After evaluation according to the following evaluation criteria, the results are shown in Table 2 below.

<Evaluation Criteria>

(Double-circle): When uneven discharge appears after 300 second of waiting time.

(Circle): When non-uniform discharge appears in waiting time 200-300 second

(Triangle | delta): When non-uniform discharge appears in waiting time 100-200 second

X: When non-uniform discharge appears within 100 seconds of waiting time

Here, the non-uniform discharge includes a case where the nozzle is clogged to prevent the discharge or the discharged ink does not fall to the desired pixel.

[Evaluation 2: Heat Resistance Evaluation]

The ink compositions of Examples 1 and 2 and Comparative Examples 1 and 2 were respectively printed on the substrate on which the black matrix was formed at a thickness of 1.5 μm, and dried in a hot air circulation drying furnace at 230 ° C. for 40 minutes to obtain a pattern. . After the patterns were left in a hot air circulation drying furnace at 230 ° C. for 2 hours, the pattern change was observed by an optical microscope, and ΔE ^* was measured by a color difference measuring device to check the color difference after standing. After evaluation according to the following evaluation criteria, the results are shown in Table 2 below.

<Evaluation Criteria>

(Double-circle): When there is no change of a pattern and (DELTA) E ^* is 1.0 or less

○: no change in pattern, ΔE ^* is 1.0 to 3.0

Δ: little change in pattern, or when ΔE ^* is 3.0 to 5.0

X: When there are many changes of a pattern, or (DELTA) E ^* is 5.0 or more

[Evaluation 3: Chemical Resistance Evaluation]

The ink compositions of Examples 1 and 2 and Comparative Examples 1 and 2 were printed to a thickness of 1 to 2 μm on a black matrix formed substrate, and dried in a hot air circulation drying furnace at 230 ° C. for 40 minutes to obtain a pattern. It was. These patterns were immersed in 5% aqueous sodium hydroxide solution, N-methylpyrrolidone (NMP), tetramethyl ammonium hydroxide (TMAH) and γ-butyrolactone (γ-GBL) for 35 minutes, and then taken out. After drying, the change of the pattern was observed by an optical microscope, and ΔE ^* was measured by a color difference measuring device to check the color difference. After evaluation according to the following evaluation criteria, the results are shown in Table 2 below. If any of the solutions did not pass the following evaluation criteria, it was determined to be defective.

<Evaluation Criteria>

◎: No change of pattern, color difference (ΔE ^* ) is 1.0 or less

○: no change in pattern, color difference (ΔE ^* ) is 3.0 or less

(Triangle | delta): There is little change of a pattern, or color difference ((DELTA) E ^* ) is 3.0-5.0

X: The pattern is large or the color difference (ΔE ^* ) is 5.0 or more

[Evaluation 4: Adhesion Evaluation]

After applying the ink compositions of Examples 1 and 2 and Comparative Examples 1 and 2 to a thickness of 1 to 2 ㎛ on a glass substrate having a thickness of 1 mm, and heated in a hot air circulation drying furnace of 230 ℃ for 40 minutes, The cross section was lined on the organic substrate on which the coating film was formed, and the coating film was divided into 100 blocks having a width of 1 mm x 1 mm, and the peeling state after the peeling experiment with a contact tape was visually observed. After evaluation according to the following evaluation criteria, the results are shown in Table 2 below.

<Evaluation Criteria>

○: 100/100 (number of peeled blocks / total blocks)-no peeling off at all

Δ: 80/100 to 99/100

×: 0/100 to 79/100

[Table 2]

Ink composition Ejectability Heat resistance Chemical resistance Adhesiveness Example 1 ◎ ○ ◎ ◎ Example 2 ◎ ○ ◎ ◎ Comparative Example 1 ○ △ △ × Comparative Example 2 ○ △ × △

As shown in Table 2, the ink composition according to an aspect of the present invention was excellent in ejection properties, it was confirmed that the pixel pattern for color filters to which it is applied is excellent in heat resistance, chemical resistance and adhesion to the substrate.

Claims (7)

(A) a polyfunctional monomer comprising a compound represented by the following formula (1); (B) acrylic resin; (C) pigments; And (D) Solvent Ink composition comprising a. [Formula 1]

(In the formula 1, R 1 and R 2 are each independently a hydrogen atom or COR 4, wherein R 4 is an alkenyl group having 2 to 10 carbon atoms, R3 is an alkyl group having 1 to 5 carbon atoms, X1 is the following Chemical Formula 1-1 or 1-2, M is 4 when X1 is the following Formula 1-1, m is 6 when X1 is the following Formula 1-2, n is an integer from 1 to 10.) [Formula 1-1]

[Formula 1-2]

The method of claim 1, The ink composition, 1 to 30% by weight of the (A) polyfunctional monomer; 1 to 40% by weight of the acrylic resin (B); 1 to 60 wt% of the (C) pigment; And Residual amount of the solvent (D) Ink composition comprising a. The method of claim 1, The (A) the polyfunctional monomer is an ink composition of the following formula (2). [Formula 2]

The method of claim 1, 1 to 40% by weight based on the total amount of the acrylic resin (B) is an ink composition of the copolymer of ethylenically unsaturated monomer containing one or more carboxyl groups. The method of claim 1, The pigment (C) may be a phthalocyanine compound, an azo compound, an anthraquinone compound, an indigo compound, a perylene compound, a perinone compound, a dioxazine compound, a quinacridone compound, an isoindrinone compound, or a phthalon compound , Ink composition selected from the group consisting of carbon black and combinations thereof. The method of claim 1, The ink composition is an ink composition comprising (E) 0.01 to 5% by weight relative to the total amount of the ink composition. The color filter manufactured using the ink composition of any one of Claims 1-6.