KR20190061684A - Colorant composition, colorant dispersed solution, photosensitive resin composition, color filter and liquid crystal display - Google Patents

Abstract

The present invention relates to a colorant composition, a colorant dispersion, a photosensitive resin composition, a color filter, and a liquid crystal display device. The colorant composition comprises: a first xanthene dye having the same number of positive and negative charges; and a complex in which a dispersant is ion-bonded with a second xanthene dye in which the number of negative charges is more than or equal to 1 than the number of positive charges, wherein the dispersant has an amine value of 0 to 200 mgKOH/g and includes an ammonium structure. In addition, the colorant composition is capable of providing the colorant dispersion having excellent dispersibility.

Description

TECHNICAL FIELD [0001] The present invention relates to a colorant composition, a colorant dispersion, a photosensitive resin composition, a color filter, and a liquid crystal display (LCD)

The present invention relates to a colorant composition, a colorant dispersion, a photosensitive resin composition, a color filter, and a liquid crystal display device.

BACKGROUND ART [0002] In recent years, LEDs or OLED devices which do not drive liquid crystal but perform self-luminescence instead of conventional CCFL have been widely used as a light source of a liquid crystal display (LCD). When an LED or an OLED is used as a light source, red, green, and blue light is emitted by itself, so that a separate color filter is not required.

However, it is generally not easy to adjust or adjust the required color coordinates using light emitted from an LED or OLED light source.

On the other hand, a pigment dispersion method using a pigment as a colorant is generally applied to realize a color filter. However, in the case of the pigment dispersion, the pigment is present in the form of particles to scatter light, and the surface area of the pigment is rapidly increased due to the fineness of the pigment, and the dispersion stability is deteriorated due to the uneven pigment particle. Therefore, in order to achieve the high brightness, high contrast ratio, and high resolution required recently, it has been investigated to use a dye as a coloring agent instead of a pigment.

However, in general, since the dye has a low solubility, the dye is not well dispersed and the brightness of the color filter can not be sufficiently satisfied.

Japanese Unexamined Patent Publication No. 9-87534

The present invention provides a colorant composition capable of providing a colorant dispersion having excellent dispersibility, a colorant dispersion prepared using the same, and a photosensitive resin composition. The present invention also provides a color filter manufactured using the above-mentioned photosensitive resin composition and a liquid crystal display device including the same.

One embodiment of the present invention is

A first xanthene dye having the same number of positive and negative charges; And

A second xanthene dye having a number of negative charges larger than that of positive charges by at least 1, and an ionic binder having an amine value of 0 to 200 mgKOH / g and a dispersant comprising an ammonium structure

≪ / RTI >

Another embodiment of the present invention is a composition comprising the colorant composition; Dispersing agent; Binder resin; And a colorant dispersion comprising a solvent.

Another embodiment of the present invention provides a photosensitive resin composition comprising the colorant dispersion, a binder resin, a polyfunctional monomer, and a photopolymerization initiator.

Another embodiment of the present invention provides a color filter comprising a transparent substrate and a colored layer provided on the transparent substrate, wherein the colored layer comprises a cured product of the photosensitive resin composition.

Another embodiment of the present invention provides a liquid crystal display device including the color filter.

According to the embodiments of the present invention, it is possible to prevent the re-agglomeration of the dye to improve the dispersibility and thus to obtain the colorant dispersion having brightness and stability. In addition, when the colorant composition and colorant dispersion according to some embodiments of the present invention are used, they are excellent in storage stability, transparency and heat resistance, and are excellent in use for color filter applications.

One embodiment of the present invention is a dye sensitized solar cell comprising: a first xanthene dye having the same number of positive and negative charges; And a second xanthene dye having a number of negative charges larger than the number of positive charges by 1 or more and an amine value of 0 to 200 mgKOH / g, wherein the dispersant comprising an ammonium structure is ion-bonded.

Conventionally, two or more kinds of dyes have been mixed to adjust the hue to be realized. In the above-described embodiment, a combination of a dye and a dispersant capable of maximizing dispersion stability is concerned. Specifically, according to the above-described embodiment, both the first xanthene dye and the second xanthene dye have a similar structure as a xanthene dye. The first xanthene dye has the same number of positive charges and negative charges, while the second xanthene dye has a number of negative charges larger than that of positive charges by one or more.

However, when only the first xanthene dye is present, the dispersion stability may be deteriorated due to the re-aggregation of the particles due to the pi-pi interactions of the xanthene dyes. However, according to the above-described embodiment, the first xanthene-based dye and the second xanthene-based dye having the above-mentioned characteristics are included so that some or all of the second xanthene-based dyes are adjacent to each other or two or more of the first xanthene- Lt; / RTI > dye or between the dyes or the end of the first xanthene dye.

Thus, the first xanthene dyes exhibit color as a xanthene dye, while the second xanthene dyes exhibit color and serve to disperse the first xanthene dyes, thereby enhancing dispersion stability have.

Particularly, since the dispersant contains an ammonium structure, the dispersant has a cationic property, whereby the negative charge of the second xanthene dye can ionically bond with a dispersant to form a complex. Due to the presence of such a second xanthene dye, the dispersion stability can be greatly improved. Thus, it is possible to provide a colorant dispersion which can prevent re-aggregation of the first xanthene-based dye, has small dispersed particles, good brightness and excellent dispersion stability. According to another embodiment of the present invention, the first xanthene dye has a maximum absorption wavelength between 500 and 580 nm, and the maximum absorption wavelength of the first xanthene dye and the maximum absorption of the second xanthene dye The wavelength difference is more than 0 and 100 nm or less. More preferably in the range of more than 0 and 50 nm or less, and most preferably in the range of more than 0 and 20 nm or less. According to the above-described embodiment, when a first xanthene dye alone is present, dispersion stability is poor, but by using a second xanthene dye having similar chemical structure and absorption characteristics, The dispersion stability can be greatly improved.

In the present specification, the first xanthene-based dye can be described as a first dye, and the second xanthene-based dye can be described as a second dye, respectively.

In the present specification, the amine value of the dispersant containing the ammonium structure is 0 to 200 mg KOH / g. Preferably, the amine value can be from 0 to 100 mg KOH / g, and from 0 to 100 mg KOH / g. According to one example, the amine value of the dispersant comprising the ammonium structure may be greater than 0 to 160 mg KOH / g.

According to another embodiment of the present invention, the first xanthene dye is represented by the following formula (1) and includes the same number of positive and negative dyes, and the second xanthene dye is represented by the following formula And includes a dye having a number of negative charges larger than that of positive charges by one or more.

 [Chemical Formula 1]

In Formula 1,

R ₁ to R ₄ are the same or different and are each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted heteroaryl group; And a dianhydride comprising a nitrogen atom,

R ₅ to R ₉ are the same or different and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; And a substituted or unsubstituted heteroaryl group, provided that at least one of R ₅ to R ₉ is an anionic group; Sulfonic acid base; Or a sulfonamide group,

R ₁₀ and R ₁₁ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A halogen group; A nitro group; Or a substituted or unsubstituted alkyl group, r ₁₀ and r ₁₁ are integers of 0 to 3, and when r ₁₀ and r ₁₁ are each 2 or more, the structures in parentheses are the same or different from each other.

(2)

In Formula 2,

R ₂₁ to R ₂₄ are the same or different from each other, and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted heteroaryl group; And a dianhydride including a nitrogen atom, and at least one of R ₂₁ to R ₂₄ is an alkyl group substituted or unsubstituted with an anionic group, a sulfonic acid group, or a sulfonamide group; An aryl group substituted with an anionic group, a sulfonic acid group, or a sulfonamide group; Or a heteroaryl group substituted by an anionic group, a sulfonic acid group, or a sulfonamide group,

R ₂₅ to R ₂₉ are the same or different from each other, and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted, straight or branched chain alkyl group having 1 to 30 carbon atoms; A substituted or unsubstituted aryl group; And substituted or unsubstituted heteroaryl groups, provided that at least one of R ₂₅ to R ₂₉ is an anionic group; Sulfonic acid base; Or a sulfonamide group,

R ₃₀ and R ₃₁ are the same or different and each independently hydrogen; heavy hydrogen; A halogen group; A nitro group; Or a substituted or unsubstituted alkyl group, r ₃₀ and r ₃₁ are integers of 0 to 3, and when r ₃₀ and r ₃₁ are each 2 or more, the structures in parentheses are the same or different from each other.

In one embodiment of the present invention, R ₁ to R ₄ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; And a dianhydride comprising a nitrogen atom, wherein R ₂₁ to R ₂₄ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; And a dianhydride comprising a nitrogen atom, with the remaining substituents being as defined above.

In the general formula (1) of the present specification, R ₁ to R ₄ are the same or different and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a dianhydride group containing a nitrogen atom.

In the general formula (1) of the present specification, R ₁ to R ₄ represent hydrogen; An aryl group substituted with an anionic group or an alkyl group; Or an alkyl group substituted or unsubstituted with an imino group containing a nitrogen atom.

In the general formula (1) of the present specification, R ₁ to R ₄ represent hydrogen; A phenyl group substituted with a methyl group; A phenyl group substituted by at least one member selected from the group consisting of a methyl group and an anionic group; An ethyl group; Propyl group; Or a propyl group substituted with an imino group containing a nitrogen atom.

In the general formula (1) of the present specification, R ₅ to R ₉ are the same or different and each independently hydrogen; Or an anionic group.

In the general formula (1) of the present specification, R ₅ to R ₉ are the same or different and each independently hydrogen; Or SO ₃ ^- .

In the general formula (1) of the present specification, R ₁₀ and R ₁₁ are the same or different and each independently hydrogen; Or a deuterium, r ₁₀ and r ₁₁ is an integer from 0 to 3, when the r ₁₀ and r ₁₁ each 2 or more, the structure in the parentheses is the same as or different from each other.

In the general formula (2), R ₂₁ to R ₂₄ are the same or different and each independently represents a substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a dianhydride group containing a nitrogen atom.

In the general formula (2), R ₂₁ to R ₂₄ are the same or different and each is an alkyl group substituted or unsubstituted with an anhydride group containing a nitrogen atom; Or an aryl group substituted by at least one selected from the group consisting of an anionic group and an alkyl group.

In the general formula (2), R ₂₁ to R ₂₄ are the same or different from each other, and each independently represents an ethyl group; Propyl group; A propyl group substituted with an imino group containing a nitrogen atom; A phenyl group substituted with a methyl group; Or a phenyl group substituted by at least one selected from the group consisting of a methyl group and an anionic group.

As used herein, the term " substituted or unsubstituted " A halogen group; An alkyl group; An alkenyl group; An alkoxy group; A cycloalkyl group; An arylalkenyl group; An aryl group; An aryloxy group; Arylalkyl groups; An arylalkenyl group; An alkylamine group; An aralkylamine group; An arylamine group; A heteroaryl group; A hydroxy group; Cyano; A heterocyclic group containing at least one of N, O, S or P atoms; A dianhydride containing a nitrogen atom; Sulfonic acid base; Substituted with at least one substituent selected from the group consisting of a sulfonamido group and an anionic group, or has no substituent group. In the present specification, the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30. Specific examples include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, hexyl and heptyl.

In the present specification, the alkenyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 30. Specific examples thereof include, but are not limited to, an alkenyl group substituted with an aryl group such as a stilbenyl group or a styrenyl group.

In the present specification, the alkoxy group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30.

In the present specification, the alkenyloxy group may be straight-chain or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 30.

In the present specification, the cycloalkyl group is not particularly limited, but preferably has 3 to 20 carbon atoms, and particularly preferably a cyclopentyl group and a cyclohexyl group.

In the present specification, examples of the halogen group include fluorine, chlorine, bromine or iodine.

In the present specification, the arylalkyl group is specifically an aryl moiety having 6 to 30 carbon atoms and an alkyl moiety having 1 to 30 carbon atoms. Specific examples include benzyl, p-methylbenzyl, m-methylbenzyl, p-ethylbenzyl, m-ethylbenzyl, 3,5-dimethylbenzyl, Group, an?,? -Methylphenylbenzyl group, a 1-naphthylbenzyl group, a 2-naphthylbenzyl group, a p-fluorobenzyl group, a 3,5-difluorobenzyl group, , p-methoxybenzyl group, m-methoxybenzyl group,? -phenoxybenzyl group,? -benzyloxybenzyl group, naphthylmethyl group, naphthylethyl group, naphthylisopropyl group, pyrrolylmethyl group, But are not limited to, an ethyl group, an aminobenzyl group, a nitrobenzyl group, a cyanobenzyl group, a 1-hydroxy-2-phenylisopropyl group, a 1-chloro-2-phenylisopropyl group and the like.

In the present specification, the aryl moiety of the arylalkenyl group may be an explanation of the aryl moiety described below, and the alkenyl moiety may be an explanation of the alkenyl moiety mentioned above.

In the present specification, the aryl group may be a monocyclic aryl group or a polycyclic aryl group.

When the aryl group is a monocyclic aryl group, the number of carbon atoms is not particularly limited, but is preferably 6 to 30 carbon atoms. Specific examples of the monocyclic aryl group include a phenyl group, a biphenyl group, a terphenyl group, and the like, but are not limited thereto.

When the aryl group is a polycyclic aryl group, the number of carbon atoms is not particularly limited. And preferably 10 to 30 carbon atoms. Specific examples of the polycyclic aryl group include, but are not limited to, a naphthyl group, an anthryl group, a phenanthryl group, a pyrenyl group, a perylenyl group, a klycenyl group and a fluorenyl group.

In the present specification, the fluorenyl group may have a substituent, and the substituents may combine to form a spiro structure.

In the present specification, the heterocyclic group is a heterocyclic group and is a heterocyclic group containing O, N or S, and the number of carbon atoms is not particularly limited, but preferably 2 to 30 carbon atoms. Examples of the heterocyclic group include a thiophene group, a furane group, a furyl group, an imidazole group, a thiazole group, an oxazole group, an oxadiazole group, a triazole group, a pyridyl group, a bipyridyl group, a triazine group, , A quinolinyl group, an isoquinoline group, an indole group, a carbazole group, a benzoxazole group, a benzoimidazole group, a benzothiazole group, a benzocarbazole group, a benzothiophene group, a dibenzothiophene group, a benzofuranyl group, And the like, but the present invention is not limited thereto.

In the present specification, the number of carbon atoms of the dianhydride group containing a nitrogen atom is not particularly limited, but is preferably 4 to 20. For example, isoindoline-1,3-dione.

In the present specification, the alkylene group means that there are two bonding sites in the alkane. The alkylene group may be linear, branched or cyclic. The number of carbon atoms of the alkylene group is not particularly limited, but is, for example, 1 to 30 carbon atoms.

In this specification, the sulfonic acid group may be represented as -SO ₃ X 'and X' may be hydrogen or a Group 1 element. For example, the sulfonic acid base is -SO ₃ Na.

In this specification, the sulfonamide group may be expressed as: -SO ₂ NRxRy, for example, Rx and Ry are the same as or different from each other, each independently represent a substituted or unsubstituted carbon atoms of 1 to 30 linear or branched alkyl group ; A substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; Or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms.

In the present specification, the anionic group has a chemical bond with the structure of the formula (1), and the anionic group is not particularly limited and includes, for example, those described in U.S. Patent No. 7,939,644, Japanese Patent Publication No. 2006-003080, Japanese Patent Publication No. 2006-001917, Japanese Unexamined Patent Publication No. 2005-159926, Japanese Unexamined Patent Application No. 2007-7028897, Japanese Unexamined Patent Application No. 2005-071680, Korean Unexamined Patent Publication No. 2007-7000693, Japanese Unexamined Patent Publication No. 2005-111696, Japanese Unexamined Patent Publication No. 2008-249663, The anions described in Specification < RTI ID = 0.0 > 2014-199436 < / RTI > Specific examples of the anionic group include a trifluoromethanesulfonic acid anion, a bis (trifluoromethylsulfonyl) amide anion, a bistrifluoromethanesulfonimide anion, a bisperfluoroethylsulfonimide anion, a tetraphenylborate anion, SO ₃ ^- , CO ₂ ^- , SO ₂ N ^- SO ₂ CF ₃ , SO ₂ N (tetrafluoroborate), tetrakis (pentafluorophenyl) borate, ^- SO ₂ CF ₂ CF _3, but include a halogen group such as fluorine group, an iodo group, a chlorine group, it is not limited thereto.

In the present specification, the anionic group may have an anion per se, or may exist in the form of a complex with other cations. Thus, depending on the number of substituted anionic groups, the total charge of the compound molecules of the present invention may vary. Since the amine group of the compound of the present invention has a cation, the sum of the total charges of the molecule may have an anion value of 0 minus one in the number of substituted anionic groups.

In the present specification, the monomer is a repeating unit constituting the polymer, and the monomer can be contained in the main chain in the polymer to form a polymer.

As used herein, the term "unit" means a repeating structure in which a monomer is contained in a polymer, and a monomer is bonded to the polymer by a polymer.

According to another embodiment of the present invention, the first xanthene dye is represented by the following general formula (3) and includes the same number of positive and negative dyes, and the second xanthene dye is represented by the following general formula And includes a dye having a number of negative charges larger than that of positive charges by one or more.

(3)

[Chemical Formula 4]

In formulas (3) and (4)

R ₁₂ , R ₁₃ , R ₃₂ and R ₃₃ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A halogen group; A nitro group; A substituted or unsubstituted alkyl group; Anionic group; Sulfonic acid base; Or a sulfonamide group and, r ₁₂ and r ₁₃ is an integer of 0 to 5, r ₃₂ is an integer from 0 to 5, r ₃₃ is an integer from 0 to _{4, r 12, r 13,} r 32 and r ₃₃ Are two or more, the structures in parentheses are the same or different from each other,

R ₆₁ and R ₆₂ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; Or a dianhydride comprising a nitrogen atom,

X is an anionic group; Sulfonic acid base; Or a sulfonamide group,

The remaining substituents are as defined in formulas (1) and (2).

According to one example, R ₆₁ and R ₆₂ may be hydrogen.

When a second xanthene dye including the dye of Formula 4 is used, the colorant composition may further include a dye of Formula 4-1 below.

[Formula 4-1]

In Formula 4-1,

R ₅₀ to R ₅₃ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A halogen group; A nitro group; Or a substituted or unsubstituted alkyl group, r ₅₀ and r ₅₁ are integers of 0 to 4, r ₅₂ and r ₅₃ are integers of 0 to 3, and r ₅₀ to r ₅₃ are each 2 or more, the structure in parentheses is Are the same or different,

Xa and Xb are the same or different from each other and each independently an anionic group; Sulfonic acid base; Or a sulfonamide group,

R ₄₅ to R ₄₉ are the same or different from each other, and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted, straight or branched chain alkyl group having 1 to 30 carbon atoms; A substituted or unsubstituted aryl group; And substituted or unsubstituted heteroaryl groups, provided that at least one of R ₄₅ to R ₅₉ is an anionic group; Sulfonic acid base; Or a sulfonamide group.

According to another embodiment of the present invention, the first xanthene dye is represented by the following formula (5) and includes the same number of positive and negative dyes, and the second xanthene dye is represented by the following formula And includes a dye having a number of negative charges larger than that of positive charges by one or more.

 [Chemical Formula 5]

[Chemical Formula 6]

In formulas (5) and (6)

R ₁₄ to R ₁₇ , and R ₃₄ to R ₃₇ are the same or different and are each independently a substituted or unsubstituted alkyl group,

R ₆₁ and R ₆₂ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; Or a dianhydride comprising a nitrogen atom,

X1 to X3 are the same or different and each independently an anionic group; Sulfonic acid base; Or a sulfonamide group.

According to one example, R ₁₄ to R ₁₇ , and R ₃₄ to R ₃₇ may be methyl groups.

According to one example, R ₆₁ and R ₆₂ may be hydrogen.

According to an example, when a second xanthene dye including the dye of Formula 6 is used, the colorant composition may further include a dye of Formula 6-1 below.

[Formula 6-1]

In formula (6-1)

R ₃₈ to R ₄₁ are the same or different and are each independently a substituted or unsubstituted alkyl group,

X4 to X6 are the same or different from each other and each independently an anionic group; Sulfonic acid base; Or a sulfonamide group.

In one embodiment of the present disclosure, the first xanthene dye may be any of the following structures.

In one embodiment of the present disclosure, the second xanthene dye may be any of the following structures.

According to one embodiment of the present invention, the dispersant may include 3 to 50 mol%, preferably 4 to 40 mol%, based on 100 mol% of the total monomer units of the monomer unit containing the ammonium structure.

According to an embodiment of the present invention, the second xanthene dye may further include a counter cation. The colorant composition according to one embodiment of the present invention may further include counter cations in a number corresponding to the number of negative charges in the second xanthene-based dye than in the positive charge. The counter cation may be a hydrogen ion, a sodium ion or a cationic group, and these may include, for example, 1 to 7 per molecule of the second xanthene dye.

According to another embodiment of the present invention, the dispersant may further include a counter anion. Counter anion may be an anion of an inorganic or organic, in particular Cl ^- may be a halogen, such as a date. The dispersant may include counter anions in a number corresponding to the positive charge number of the dispersant.

The colorant composition according to one embodiment of the present invention can be cleaned as described below wherein the counter cation or counter anion is removed and the cationic structure contained in the dispersant is counter cationic of the second xanthene dye can do.

According to another embodiment of the present invention, the dispersant is represented by the following general formula (7).

(7)

In formula (7)

Ra to Rd are the same or different from each other and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted arylalkyl group; -L-NHCO-R; Or -L-OCO-R, or two of Ra to Rd may be bonded to each other to form a substituted or unsubstituted ring,

R is hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted arylalkyl group,

L is a substituted or unsubstituted alkylene group.

According to one example, in the general formula (7), at least one of Ra to Rd, and more preferably at least 2, include a long chain having at least 5 carbon atoms. In this case, dispersion stability by the dispersing agent can be further increased.

According to another embodiment of the present invention, the dispersant comprises a unit represented by the following general formula (8).

[Chemical Formula 8]

In formula (8)

Rb to Rd are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted arylalkyl group, or two of Rb to Rd are bonded to each other to form a substituted or unsubstituted ring,

Z is an alkylene group; An arylene group; -L-NHCO-; Or -L-OCO-, L is an alkylene group,

Re to Rg are the same or different from each other and each independently represents hydrogen; Or an alkyl group.

According to another embodiment of the present invention, the dispersant has a weight average molecular weight of 1,000 to 10,000. Preferably 3,000 to 8,000, and more preferably 5,000 to 7,000.

According to one example, the end of the dispersant is hydrogen, a halogen group or an alkyl group.

According to another embodiment of the present invention, the dispersant further includes at least one of the following formulas (9) to (12) in addition to the unit of the formula (8).

[Chemical Formula 9]

[Chemical formula 10]

(11)

[Chemical Formula 12]

In formulas (8) to (11)

R 1, R 2, R 3, R 4, R 5 and R 6 are the same or different and each independently represents hydrogen or an alkyl group having 1 to 20 carbon atoms,

Rk and Rs are the same or different and each independently represents an alkyl group having 1 to 20 carbon atoms,

Ro is an arylalkyl group having 7 to 20 carbon atoms,

Rw and Rx are the same or different and each independently represents hydrogen, an alkyl group having 1 to 20 carbon atoms or an arylalkyl group having 7 to 20 carbon atoms,

L ₁ and L ₂ are the same or different and each independently represents an alkylene group having 1 to 6 carbon atoms; and m is an integer of 1 to 6.

As a specific example, the dispersant may comprise the following units, the rightmost unit of which is essential.

A: g: 10 to 20 mol%, c: 5 to 10 mol%, and d: 50 to 90 mol% 3-6 mol%, e: 1-5 mol%, f: 15-20 mol%, g: 2-6 mol%.

According to another embodiment of the present invention, the colorant composition further comprises a solvent.

The solvent is selected from the group consisting of acetone, methyl ethyl ketone, methyl isobutyl ketone, methyl cellosolve, ethyl cellosolve, tetrahydrofuran, 1,4-dioxane, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, propylene glycol dimethyl ether , Propylene glycol diethyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol methyl ethyl ether, chloroform, methylene chloride, 1,2-dichloroethane, 1,1,1-trichloroethane, 1 Cyclohexane, benzene, toluene, xylene, methanol, ethanol, isopropanol, propanol, butanol, t-butanol, 2-ethylhexanoate, 2-trichloroethane, 1,1,2-trichloroethane, hexane, heptane, Methoxypropanol, 3-methoxybutanol, cyclohexanone, cyclopentanone, propylene glycol methyl ether acetate, propylene glycol ethyl ether acetate, 3-methoxybutyl It may be at least one selected from the group consisting of citrate, ethyl 3-ethoxypropionate, ethyl cellosolve acetate, methyl cellosolve acetate, butyl acetate, propylene glycol monomethyl ether and dipropylene glycol monomethyl ether. But is not limited thereto.

If desired, the colorant composition may further comprise a salt. This salt can serve to refine the dispersed particles in a finishing step described later. The salt can be removed by washing with a solvent such as distilled water, and is not particularly limited as long as it is a component capable of helping micronization. For example, a material such as NaCl may be used. When a salt is used, its amount to be used may be determined as necessary, and may be used, for example, about 2 to 8 times, preferably about 3 to 5 times, based on the total weight of the first and second xanthene dyes . The salt may be removed by washing as described above, in which case the solvent may also be removed. The washing may be carried out once or twice or more times as necessary.

The second xanthene dye may be contained in an amount of 3 to 30 parts by weight, preferably 5 to 50 parts by weight, based on 100 parts by weight of the first xanthene dye.

The dispersant may be contained in an amount of from 1.5 to 8 times, preferably from 2 to 6 times the weight of the second xanthene dye.

When a solvent is included, the solvent may be contained at a weight of 1/15 to 1/5 of the weight of the solid. Here, the solid weight means the weight of the solid content including the contents of the first and second xanthene dyes and, if used, salt.

According to another embodiment of the present invention, the above-described colorant composition may further comprise at least one of a dye and a pigment. As an example, the colorant composition may further comprise a phthalocyanine pigment, for example, PB15: 6. Also, metal-free phthalocyanine pigments or dyes, metal-substituted phthalocyanine pigments or dyes, triarylmethane pigments or dyes, quinophthalone pigments or dyes, Isoindoline pigments or dyes, azo pigments or dyes, azo-metal complex pigments or dyes, perylene pigments or dyes, diketopyrrolopyrrol-based pigments or dyes, Diketopyrrolo-pyrrole pigments or dyes, Anthraquinone pigments or dyes, Dipyrromethene pigments or dyes, Porphyrin pigments or dyes, Tetra aza porphyrin pigments or dyes , A rhodamine pigment or dye, and a xanthene pigment or a dye. . One of the dyes and pigments contained in the colorant composition may be contained in an amount of 1 to 50 parts by weight, preferably 10 to 40 parts by weight, based on 100 parts by weight of the colorant composition.

Another embodiment of the present invention is a colorant composition as described above; Dispersing agent; Binder resin; And a colorant dispersion comprising a solvent. The colorant dispersions herein may be replaced by the term millbase. Herein, the colorant composition contained in the colorant dispersion means a state in which the solvent is removed. If a salt is used in the colorant composition, it is removed by washing with a salinity solvent and then incorporated into the colorant dispersion.

According to one embodiment, the colorant dispersion may further comprise beads. The beads having a particle size of 0.05 to 1.5 mm can be used. As a specific example, beads having particle diameters of 0.1 mm, 0.3 mm, 0.5 mm, 0.8 mm, and / or 1 mm can be used. As the material of the beads, at least one of aluminum oxide, aluminum silicate, zirconium oxide, and / or silicon nitride may be used. The amount of beads to be used is not particularly limited, but may be 10 to 40 times the total weight of the complexing agent composition and the dispersing agent. Such beads may serve to disperse the constituents of the compositions contained in the colorant dispersion.

According to another embodiment of the present invention, the colorant dispersion described above may further comprise at least one of a dye and a pigment. Examples of further included dyes and pigments are the same as those exemplified for the dyes and pigments further included in the colorant composition described above.

The colorant composition may be subjected to a micronization process before being incorporated into the colorant dispersion. The micronization process refers to a process in which a physical force is applied to micronize. According to one example, the diameter of the dispersed particles in the colorant composition by the micronization process is 40 nm to 100 nm. Here, the diameter means the maximum length of dispersed particles.

The diameter of the particles after micronization can be measured by SEM or TEM equipment. A specific example using the SEM measurement method is as follows. First, 0.01 g of the colorant dispersion containing micronized particles is added to a chloroform solvent, and treated with medium intensity for 10 minutes by using an ultrasonic equipment JAC-5020 manufactured by KODO Corporation, thereby dropping the particles and the particles well. Then drop a drop on the glass and heat it on a 50 degree hot plate for 5 minutes to remove the solvent. The particles are coated with a Pt layer having a thickness of about 100 to 200 Å, and the particle diameter is observed with an SEM.

After the colorant dispersion was prepared, PGEMA (propylene glycol monomethyl ether acetate) solvent was added to a 1 cm X 5 cm cell at about 1/4 of a height Add two drops of dispersion (Millbase). After diluting well in the solvent, the particle size was measured with a Melvern particle size analyzer. The particle size distribution is measured by measuring the angle change according to the intensity of scattered light while passing through the particle sample in which the laser beam is dispersed.

When the diameter of the dispersed particles in the colorant dispersion is more than 100 nm, there arises a problem that the contrast ratio is reduced due to scattering of light, and when the dispersed particle size is too small, the contrast ratio is reduced by re- And the dispersion (Millbase), the range of 40 to 100 nm, more preferably 40 to 80 nm, is suitable.

According to one example, the dispersed particle size of the colorant composition is 40 nm to 80 nm and the viscosity is 2.5 to 6.5 cP.

To measure the viscosity, add about 1 mL of the prepared colorant dispersion (Millbase) to the viscosity measurement chamber and turn on the motor to obtain a steady viscosity value that reaches the steady flow as the spindle rotates.

As the solvent, those exemplified in the above-described colorant composition may be used.

The binder resin is not particularly limited as long as it can exhibit physical properties such as strength and developability of a film made of a resin composition.

The binder resin may be a copolymer resin of a monomer having a multifunctional monomer that imparts mechanical strength and a monomer that imparts alkali solubility. The binder resin may further include a binder generally used in the art.

The multifunctional monomer which imparts the mechanical strength of the film is an unsaturated carboxylic acid ester; Aromatic vinyls; Unsaturated ethers; Unsaturated imides; And acid anhydrides.

Specific examples of the unsaturated carboxylic acid esters include benzyl (meth) acrylate, methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, dimethylaminoethyl (meth) acrylate, isobutyl (Meth) acrylate, t-butyl (meth) acrylate, cyclohexyl (meth) acrylate, isobornyl (meth) acrylate, ethylhexyl Hydroxypropyl (meth) acrylate, hydroxypropyl (meth) acrylate, hydroxyethyl (meth) acrylate, 2-hydroxypropyl (Meth) acrylate, 3-methoxybutyl (meth) acrylate, 2-methoxyethyl (meth) acrylate, CDI ethylene glycol (Meth) acrylate, methoxytriethylene glycol (meth) acrylate, methoxytripropylene glycol (meth) acrylate, poly (ethylene glycol) methyl ether (meth) acrylate, p-nonylphenoxypolypropylene glycol (meth) acrylate, glycidyl (meth) acrylate, tetrafluoropropyl (meth) , 1,3,3,3-hexafluoroisopropyl (meth) acrylate, octafluoropentyl (meth) acrylate, heptadecafluorodecyl (meth) acrylate, tribromophenyl (meth) , Methyl [alpha] -hydroxymethyl acrylate, ethyl [alpha] -hydroxymethyl acrylate, propyl [alpha] -hydroxymethyl acrylate and butyl [alpha] -hydroxymethyl acrylate It is, but is not limited thereto.

Specific examples of the aromatic vinyl monomers include aromatic vinyl monomers such as styrene,? -Methylstyrene, (o, m, p) -vinyltoluene, (o, Styrene, but are not limited thereto.

Specific examples of the unsaturated ethers include, but are not limited to, vinyl methyl ether, vinyl ethyl ether, and allyl glycidyl ether.

Specific examples of the unsaturated imide are selected from the group consisting of N-phenylmaleimide, N- (4-chlorophenyl) maleimide, N- (4-hydroxyphenyl) maleimide and N-cyclohexylmaleimide But is not limited to these.

Examples of the acid anhydride include maleic anhydride, methylmaleic anhydride, and tetrahydrophthalic anhydride, but are not limited thereto.

The alkali-solubilizing monomer is not particularly limited as long as it contains an acid group, and examples thereof include (meth) acrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, monomethyl maleic acid, 5-norbornene- (Meth) acryloyloxy) ethyl phthalate, mono-2 - ((meth) acryloyloxy) ethyl succinate, omega -carboxypolycaprolactone mono But it is not limited to these.

According to one embodiment of the present invention, the acid value of the binder resin is 50 to 130 KOH mg / g and the weight average molecular weight is 1,000 to 50,000.

The content of the colorant composition comprising the complex of the first xanthene dye and the second xanthene dye and the dispersant in the colorant dispersion may be 5 to 20 wt%. The binder resin in the colorant dispersion may be 1 to 60% by weight, the dispersant may be 1 to 40% by weight, and the solvent may be 10 to 80% by weight.

An embodiment of the present invention provides a photosensitive resin composition comprising the above-described colorant dispersion, a binder resin, a polyfunctional monomer and a photopolymerization initiator.

Here, as the binder resin and the solvent, those described in connection with the above-described colorant dispersion and colorant composition may be used.

The multifunctional monomer is a monomer that functions to form a photoresist phase by light. Specific examples thereof include propylene glycol methacrylate, dipentaerythritol hexaacrylate, dipentaerythritol acrylate, neopentyl glycol di Acrylate, 6-hexanediol diacrylate, 1,6-hexanediol acrylate, tetraethylene glycol methacrylate, bisphenoxy ethyl alcohol diacrylate, trishydroxy ethylisocyanurate trimethacrylate, trimethyl 1, 2 or 3 groups selected from the group consisting of propane trimethacrylate, diphenyl pentaerythritol hexaacrylate, pentaerythritol trimethacrylate, pentaerythritol tetramethacrylate and dipentaerythritol hexa methacrylate. Species or a mixture of two or more species.

The photopolymerization initiator is not particularly limited as long as it is an initiator that generates radicals by light to induce crosslinking. Examples of the photopolymerization initiator include a group consisting of an acetophenone compound, a nonimidazole compound, a triazine compound, and a oxime compound It may be at least one selected.

The acetophenone compound may be at least one selected from the group consisting of 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1- (4-isopropylphenyl) (2-hydroxyethoxy) -phenyl- (2-hydroxy-2-propyl) ketone, 1-hydroxycyclohexyl phenyl ketone, benzoin methyl ether, benzoin ethyl ether, benzoin isobutyl ether, Butyl ether, 2,2-dimethoxy-2-phenylacetophenone, 2-methyl- (4-methylthio) phenyl- (4-morpholinophenyl) -butan-1-one, or 2- (4-bromo-benzyl-2-dimethylamino- 2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropane-1-one, and the like.

Examples of the biimidazole-based compounds include 2,2-bis (2-chlorophenyl) -4,4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis , 4 ', 5,5'-tetrakis (3,4,5-trimethoxyphenyl) -1,2'-biimidazole, 2,2'-bis (2,3-dichlorophenyl) 4 ', 5,5'-tetraphenylbiimidazole, 2,2'-bis (o-chlorophenyl) -4,4,5,5'-tetraphenyl-1,2'-biimidazole and the like , But is not limited thereto.

The triazine-based compound may be at least one selected from the group consisting of 3- {4- [2,4-bis (trichloromethyl) -s-triazin-6-yl] phenylthio} propionic acid, 1,1,1,3,3,3- (Trichloromethyl) -s-triazine-6-yl] phenylthio} propionate, ethyl 2- {4- [2,4 Bis (trichloromethyl) -s-triazin-6-yl] phenylthio} acetate, 2- epoxyethyl-2- {4- [ Yl] phenylthio} acetate, benzyl-2- {4- [2- (4-fluorophenyl) (Trichloromethyl) -s-triazine-6-yl] phenylthio} acetate, 3- {chloro-4- [ (Phenylthio) propionic acid, 2,4- bis (trichloromethyl) -s-triazine-6-yl] Methyl) -6- p-methoxystyryl-s-triazine, 2,4-bis (trichloromethyl) -6- (1-p-di Methylaminophenyl) -1,3-butadienyl-s-triazine, 2-trichloromethyl-4-amino-6-p-methoxystyryl-s-triazine, and the like .

The oxime-based compound may be at least one selected from the group consisting of 1,2-octadione, -1- (4-phenylthio) phenyl, 2- (o-benzoyloxime) (Ciba Geigy, Shisei 124), ethanone, -Ethyl) -6- (2-methylbenzoyl-3-yl) -, 1- (O-acetyloxime) (Cajoo 242), N-1919 (Adeca), and the like.

According to one embodiment of the present invention, the content of the binder resin is 1 wt% to 60 wt%, preferably 10 wt% to 25 wt%, based on the total weight of solid components in the photosensitive resin composition, Is 0.1 wt% to 20 wt%, preferably 1 wt% to 7 wt%, and the content of the polyfunctional monomer is 0.1 wt% to 50 wt%, preferably 5 wt% to 20 wt%. The content of the solvent may be 10 to 85% by weight, preferably 35 to 65% by weight, based on the total weight of the composition. The colorant dispersion may be contained in an amount of 5 to 35% by weight based on the total weight of the composition, and the content of the first and second xanthene dyes and the dispersant in the colorant dispersion may be 5 to 20% by weight.

The total weight of the solid content means the sum of the total weight of the components excluding the solvent in the resin composition. The standard of weight percentage based on solid content and solid content of each component can be measured by general analytical means used in the art such as liquid chromatography or gas chromatography.

According to another embodiment of the present invention, the above-mentioned photosensitive resin composition may further include at least one of a dye and a pigment. Examples of further included dyes and pigments are the same as those exemplified for the dyes and pigments further included in the colorant composition described above.

The photosensitive resin composition may further include a surface additive. As the surface additive, a hardening accelerator, adhesion promoter, adhesion aid, surfactant, thermal polymerization inhibitor, ultraviolet absorber, dispersant, leveling agent, antioxidant, photo-crosslinking sensitizer, multi-thiol and the like may be used. The surface additive may be contained in an amount of 0.1 to 5% by weight, preferably 0.5 to 1% by weight based on the total amount of the photosensitive resin composition. The content of the surface additive may be 0.1% by weight to 20% by weight based on the total weight of the solid components in the photosensitive resin composition.

The photo-crosslinking sensitizer may be at least one selected from the group consisting of benzophenone, 4,4-bis (dimethylamino) benzophenone, 4,4-bis (diethylamino) benzophenone, 2,4,6-trimethylaminobenzophenone, Benzoate compounds such as benzoate, 3,3-dimethyl-4-methoxybenzophenone, and 3,3,4,4-tetra (t-butylperoxycarbonyl) benzophenone; Fluorene-based compounds such as 9-fluorenone, 2-chloro-9-proprenone and 2-methyl-9-fluorenone; Thioxanthone systems such as thioxanthone, 2,4-diethylthioxanthone, 2-chlorothioxanthone, 1-chloro-4-propyloxytioxanthone, isopropylthioxanthone and diisopropylthioxanthone compound; Xanthone compounds such as xanthone and 2-methylxanthone; Anthraquinone compounds such as anthraquinone, 2-methyl anthraquinone, 2-ethyl anthraquinone, t-butyl anthraquinone, and 2,6-dichloro-9,10-anthraquinone; (9-acridinylpentane), 1,3-bis (9-acridinyl) propane, and the like Acridine-based compounds; Dicarbonyl compounds such as benzyl, 1,7,7-trimethyl-bicyclo [2,2,1] heptane-2,3-dione, and 9,10-phenanthrenequinone; Phosphine oxide-based compounds such as 2,4,6-trimethylbenzoyldiphenylphosphine oxide and bis (2,6-dimethoxybenzoyl) -2,4,4-trimethylpentylphosphine oxide; Benzoate-based compounds such as methyl-4- (dimethylamino) benzoate, ethyl-4- (dimethylamino) benzoate and 2-n-butoxyethyl-4- (dimethylamino) benzoate; (4-diethylaminobenzal) cyclopentanone, 2,6-bis (4-diethylaminobenzal) cyclohexanone, 2,6-bis Amino-synergists such as methyl-cyclopentanone; (Diethylamino) coumarin, 3- (2-benzothiazolyl) -7- (diethylamino) coumarin, 3-benzoyl- -Benzoyl-7-methoxy-coumarin, 10,10-carbonylbis [1,1,7,7-tetramethyl-2,3,6,7-tetrahydro-1H, 5H, 11H- Pyran o [6,7,8-ij] -quinolizine-11-one; Chalcone compounds such as 4-diethylaminokalone and 4-azidobenzalacetophenone; 2-benzoylmethylene, 3-methyl-b-naphthothiazoline, and the like.

As the curing accelerator, curing and mechanical strength are used, and specifically, 2-mercaptobenzoimidazole, 2-mercaptobenzothiazole, 2- mercaptobenzoxazole, 2,5-dimercapto-1,3 , 4-thiadiazole, 2-mercapto-4,6-dimethylaminopyridine, pentaerythritol-tetrakis (3-mercaptopropionate), pentaerythritol-tris (3-mercaptopropionate) (2-mercaptoacetate), trimethylolpropane-tris (2-mercaptoacetate), and trimethylolpropane-tris (3-mercaptopropionate) Nate) may be used.

Examples of the adhesion promoter used in the present invention include methacryloyloxypropyltrimethoxysilane, methacryloyloxypropyldimethoxysilane, methacryloyloxypropyltriethoxysilane, methacryloyloxypropyldimethoxysilane , And at least one selected from the group consisting of octyltrimethoxysilane, dodecyltrimethoxysilane, octadecyltrimethoxysilane and the like as the alkyltrimethoxysilane can be used. You can choose to use it.

Specifically, the silicone surfactant is BYK-077, BYK-085, BYK-300, BYK-301, BYK-302, BYK-306, BYK-307 , BYK-310, BYK-320, BYK-322, BYK-323, BYK-325, BYK-330, BYK-331, BYK-333, BYK-335, BYK-341v344, BYK-345v346, BYK-370, BYK-370, BYK-380, and BYK-390 may be used as the fluorine-based surfactant, and DIC F-444, F-444, F-441, F-450, F-493, F-494, F-443, F-444, F-445 and F-446 of Dai Nippon Ink & , F-470, F-471, F-472SF, F-474, F-475, F-477, F-478, F-479, F-480SF, F-482, F- TF-1116SF, TF-1026SF, TF-1128, TF-1127, TF-1129, TF-1126, TF-1130, TF-1025SF, TF- , TF-1131, TF1132, TF1027SF, TF-1441, TF-1442, and the like.

The antioxidant may be at least one selected from the group consisting of a hindered phenol antioxidant, an amine antioxidant, a thio antioxidant, and a phosphine antioxidant, but is not limited thereto.

Specific examples of the antioxidant include phosphoric acid type heat stabilizers such as phosphoric acid, trimethyl phosphate or triethyl phosphate; Butyl-p-cresol, octadecyl-3- (4-hydroxy-3,5-di-t- butylphenyl) propionate, tetrabis [methylene- Butyl-4-hydroxyphenyl) propionate] methane, 1,3,5-trimethyl-2,4,6-tris (3,5-di- 4-hydroxybenzylphosphite diethyl ester, 2,2-thiobis (4-methyl-6-t-butylphenol), 2,6-g, (3-methyl-6-t-butylphenol), 4,4'-thiobis (3-methyl- (4'-hydroxy-3'-tert-butylphenyl) butanoic acid] glycol ester (Bis [3,3- Hindered phenol-based primary antioxidants such as esters; Amines such as phenyl-? -Naphthylamine, phenyl-? -Naphthylamine, N, N'-diphenyl-p-phenylenediamine or N, N'-di-? -Naphthyl- Secondary antioxidant; Thio such as dilauryl disulfide, dilauryl thiopropionate, distearyl thiopropionate, mercaptobenzothiazole, or tetramethyl thiuram disulfide tetrabis [methylene-3- (laurylthio) propionate] Secondary antioxidant; (2,4-ditbutylphenyl) pentaerythritol diphosphite or (1, 2,4-dibutylphenyl) pentaerythritol diphosphite or bis (2,4-dibutylphenyl) (1,1'-biphenyl) -4,4'-diisopropylphosphonic acid tetrakis [2,4-bis (1,1-dimethylethyl) phenyl] -Diylbisphosphonous acid tetrakis [2,4-bis (1,1-dimethylethyl) phenyl] ester).

As the ultraviolet absorber, 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5-chloro-benzotriazole and alkoxybenzophenone may be used. Anything that is commonly used can be used.

Examples of the thermal polymerization inhibitor include p-anisole, hydroquinone, pyrocatechol, t-butyl catechol, N-nitrosophenylhydroxyamine ammonium salt, N-nitrosophenylhydroxy (3-methyl-6-t-butylphenol), 2,2-dimethyl-2-pyrrolidone, But are not limited to, methylene bis (4-methyl-6-t-butylphenol), 2-mercaptoimidazole, and phenothiazine, And may include those generally known in the art.

The leveling agent may be polymeric or non-polymeric. Specific examples of the polymeric leveling agent include polyethyleneimine, polyamide amine, reaction products of amine and epoxide, and specific examples of the non-polymeric leveling agent include non-polymer sulfur-containing and non-polymer nitrogen- But are not limited to, compounds commonly used in the art may all be used.

Another embodiment of the present invention provides a color filter comprising a transparent substrate and a colored layer provided on the transparent substrate, wherein the colored layer comprises a cured product of the photosensitive resin composition described above.

The color filter can be produced using the photosensitive resin composition. The photosensitive resin composition is coated on a substrate to form a coating film, and the color filter can be formed by exposing, developing and curing the coating film.

The coating method is not particularly limited, but a spray method, a roll coating method, a spin coating method, or the like can be used, and generally, a spin coating method is widely used. After the coating film is formed, a part of the residual solvent may be removed under reduced pressure as occasion demands.

Examples of the light source for curing the resin composition according to the present invention include, but are not limited to, a mercury vapor arc, a carbon arc, and an Xe arc that emits light having a wavelength of 250 nm to 450 nm.

The resin composition according to one embodiment of the present invention can provide a color filter having a high color reproducibility and a high luminance and a high contrast ratio even when the color filter is cured during the production of the color filter due to its excellent heat resistance, have.

The substrate may be a glass plate, a silicon wafer, a plate of a plastic substrate such as polyethersulfone (PES), polycarbonate (PC), or the like, and the kind thereof is not particularly limited.

The color filter may include a red pattern, a green pattern, a blue pattern, and a black matrix.

According to another embodiment, the color filter may further include an overcoat layer.

Between the color pixels of the color filter, a lattice-shaped black pattern called a black matrix can be arranged for the purpose of improving the contrast. As the material of the black matrix, chromium can be used. In this case, a method of depositing chromium on the entire glass substrate and forming a pattern by an etching process can be used. However, in consideration of high cost in the process, high reflectivity of chrome, and environmental pollution caused by a chromium waste liquid, a resin black matrix by a pigment dispersion method capable of fine processing can be used.

The black matrix according to one embodiment of the present invention can use a black pigment or a black dye as a coloring material. For example, carbon black may be used alone, or a mixture of carbon black and a color pigment may be used. In this case, since the color pigment having insufficient light shielding property is mixed, the strength of the film or the adhesion to the substrate is lowered There is an advantage not to be.

A liquid crystal display including the color filter according to the present invention is provided. The liquid crystal display device may have a configuration known in the art, except that it includes the color filter described above.

Hereinafter, the present invention will be described in detail with reference to examples. The following examples are intended to illustrate the present disclosure and the scope of the present disclosure includes the scope of the following claims and their substitutions and modifications, which are not intended to limit the scope of the embodiments.

[Process for producing a dispersant containing a resin having a cationic group in a side chain]

(Preparation Example 1: Production of Resin A-1 having a cationic group in the side chain)

To a four-neck separable flask equipped with a thermometer, a stirrer, a distillation tube and a condenser, 56.7 parts by weight of propylene glycol monomethyl ether acetate was added based on 100 parts by weight of the total weight of the dispersant containing a resin having a cationic group in the side chain, And the temperature was raised to 75 캜 under an air flow. 45.8 parts by weight of methyl methacrylate, 14.8 parts by weight of n-butyl methacrylate, 7.8 parts by weight of 2-ethylhexyl methacrylate, and 5.0 parts by weight of benzyl methacrylate, based on 100 parts by weight of the monomer or polymerization initiator, , 3.0 parts by weight of triethylene glycol methyl ether methacrylate, 18.9 parts by weight of 2-dimethylaminoethyl methacrylate, and 4.7 parts by weight of benzyl chloride salt were uniformly added, and the mixture was added to a dropping funnel. And the mixture was added dropwise to the flask over 2 hours. After 2 hours from the completion of the dropwise addition, it was confirmed from the solid content that the polymerization yield was 98.7% or more and the weight average molecular weight (Mw) was 5,500. Thereafter, 10 parts by weight of propylene glycol monomethyl ether was added based on 100 parts by weight of the total weight of the dispersing agent including the resin having a cationic group in the side chain, and a resin having cationic groups was prepared in the side chain of 5 mol% Respectively. The amine value of the obtained resin was 30 mgKOH / g.

The weight average molecular weight (Mw) of the resin having a cationic group in the side chain was measured by gel permeation chromatography (GPC) using polystyrene as a standard material. Further, the amine value was determined by the potentiometric titration method using 0.1N hydrochloric acid aqueous solution, and then converted to the equivalent amount of potassium hydroxide.

(Production Examples 2 to 8: Production of resins A-2 to A-8 having cationic side chains)

Resins A-2 to A-8 having cationic groups in the side chain were obtained in the same manner as in Production Example 1 except that the monomer, the polymerization initiator and the reaction temperature were changed to the compositions shown in Table 1.

Suzy MMA nBMA wEHMA BzMA ETEGMA DMAEMA BC ST EG MDGMA Molecular Weight Amine Production Example 1 A-1 45.8 14.8 7.8 5.0 3.0 18.9 4.7 - - - 5500 30 Production Example 2 A-2 47.8 11.5 6.8 6.4 - 21.2 - - - 6.3 5800 120 Production Example 3 A-3 46.7 - - - - - 22.0 18.5 12.8 - 6100 2 Production Example 4 A-4 14.1 14.3 27.0 - - 22.3 7.3 - 15.0 - 6500 7 Production Example 5 A-5 32.2 12.8 - 15.0 - - 40.0 - - - 5300 0.5 Production Example 6 A-6 25.7 14.3 22.3 - - 12.2 - - - 25.5 6200 120 Production Example 7 A-7 40.5 24.8 - - - 15.8 - - - 18.9 6800 160 Production Example 8 A-8 60.3 11.5 10.0 - - 10.2 - - - 8.0 5700 70

In Table 1, ST means styrene, MDGMA means diethylene glycol methyl ether methacrylate, and EG means ethylene glycol methacrylate.

[Production method of colorant complex]

The composition shown in Table 1 was placed in a Bench Kneader (Irie shokai co.ltd. Model PBV-01) together with 7.5 g of diethylene glycol and 40 g of crushed salt (NaCl) and refined for 4 hours. After 4 hours, the micronized colorant composition was added to 1 L of distilled water at 60 캜, stirred for 30 minutes, and then decompressed to remove distilled water. When distilled water was removed under reduced pressure, about 7 L of distilled water at 60 ° C was further used to completely remove the salt (NaCl) to obtain the complexes B-1 to B-18 shown in Table 2 below. The following structures were used as the first and second xanthene dyes.

First xanthene dyes (1) Second xanthene dyes (1)

(2) Dyes of the second nature xanthine (2)

Complex The first xanthene dye (g) The second xanthene dye (g) Suzy Amine Mol ratio (%) The dispersant (g) B-1 (1) 10.0 - - - - - B-2 (1) 10.0 - - - - - B-3 (1) 10.0 - - - - - B-4 (1) 10.0 - - - - - B-5 (1) 10.0 - A-1 30 4.7 - B-6 - (1) 3.0 A-1 30 4.7 - B-7 (1) 10.0 (1) 1.0 A-2 120 - - B-8 (1) 10.0 (1) 0.5 A-2 120 - - B-9 (1) 10.0 (1) 1.0 A-1 30 4.7 3.0 B-10 (1) 10.0 (1) 1.0 A-1 30 4.7 3.0 B-11 (1) 10.0 (1) 1.0 A-1 30 4.7 3.0 B-12 (1) 10.0 (1) 1.0 A-1 30 4.7 3.0 B-13 (1) 10.0 (1) 1.0 A-3 2 22.0 3.0 B-14 (1) 10.0 (1) 1.0 A-4 7 7.3 3.0 B-15 (1) 10.0 (1) 1.0 A-5 0.5 40.0 3.0 B-16 (1) 8.0 (1) 1.0 A-1 30 4.7 3.0 B-17 (1) 10.0 (1) 1.0 A-1 30 4.7 4.5 B-18 (1) 10.0 (1) 1.0 A-3 2 22.0 4.0 B-19 (1) 10.0 (1) 0.5 A-3 2 22.0 3.0 B-20 (2) 10.0 (2) 1.0 A-1 30 4.7 3.0 B-21 (1) 10.0 (2) 1.0 A-1 30 4.7 3.0

The mole ratio (%) in Table 2 means the ratio of the ammonium salt introduced by the ratio of EG (ethylene glycol methacrylate) in Table 1 above.

[Method for producing colorant dispersion]

Composites B-1 to B-21, which were the colorant compositions prepared above, were stirred so as to homogeneously mix the composition shown in the following Table 3 and 8.4 g of propylene glycol monomethyl ether acetate, and then granulated using 0.3 mm diameter zirconia beads to obtain Paint The dispersion treatment was carried out with a shaker for 2 hours. Then, the dispersion was changed to 0.1 mm zirconia beads and further dispersed with a paint shaker for 2 hours. After the dispersion treatment, 12.6 g of propylene glycol monomethyl ether acetate was added to each composition, followed by filtration with a 1.0-μm filter to obtain a colorant dispersion.

Dispersion The complex (g) The dispersant (g) Amine Mol ratio (%) Binder (g) C-1 B-1 (2.1 g) A-2 (1.75 g) 120 - A (4.3 g) C-2 B-2 (2.1 g) A-7 (1.75 g) 160 - A (4.3 g) C-3 B-3 (2.1 g) A-8 (1.75 g) 70 - A (4.3 g) C-4 B-4 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-5 B-5 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-6 B-6 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-7 B-7 (2.1 g) A-2 (1.75 g) 120 - A (4.3 g) C-8 B-8 (2.1 g) A-2 (1.75 g) 120 - A (4.3 g) C-9 B-9 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-10 B-10 (2.1 g) A-2 (1.75 g) 120 - A (4.3 g) C-11 B-11 (2.1 g) A-6 (1.75 g) 120 - A (4.3 g) C-12 B-12 (2.1 g) A-3 (2.60 g) 2 22.0 A (4.3 g) C-13 B-13 (2.1 g) A-3 (2.60 g) 2 22.0 A (4.3 g) C-14 B-14 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-15 B-15 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-16 B-16 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-17 B-17 (2.1 g) A-5 (3.28 g) 0.5 40.0 A (4.3 g) C-18 B-18 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-19 B-19 (2.1 g) A-4 (2.73 g) 7 7.3 A (4.3 g) C-20 B-20 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g) C-21 B-21 (2.1 g) A-1 (2.60 g) 30 4.7 A (4.3 g)

In Table 3, the binder A is a copolymer having a mass ratio of benzylmethacrylate: N-phenylmaleimide: styrene: methacrylic acid = 55: 9: 11: 25.

[Preparation of Photosensitive Coloring Composition]

The photosensitive coloring composition was prepared by applying the components and blending amounts shown in Table 4 below.

6.74 parts by weight of one of the colorant dispersions C-1 to C-21 prepared above, 22.33 parts by weight of a dispersion of phthalocyanine (B15: 6), 11.73 parts by weight of binder A, 100 parts by weight of DIPENTAERYTHRITOL HEXAACRYLATE), 1.16 parts by weight of initiator PBG-3057, 0.39 part by weight of 4,4'-bis (diethylamino) benzophenone as a photosensitizer EMK, 0.1 part by weight of surface additive B (leveling agent DIC F- 0.19 part by weight of surface additive C (adhesive preparation KBM-503), 0.14 part by weight of surface additive D (antioxidant Songnox-1010), 0.44 part by weight of surface additive E (Muti-thiol SQ-506), solvent PGMEA Lactone monomethyl ether acetate) and 17.4 parts by weight of 3-MBA (3-methoxy butyl acetate) were mixed.

Binder A was the same as that used for preparing the colorant dispersion.

The binder A is a copolymer having a mass ratio of benzylmethacrylate: N-phenylmaleimide: styrene: methacrylic acid = 55: 9: 11: 25.

Dispersion bookbinder Monomer Initiator Surface additive menstruum Comparative Example 1 C-1 - - - - - Comparative Example 2 C-2 - - - - - Comparative Example 3 C-3 - - - - - Comparative Example 4 C-4 - - - - - Comparative Example 5 C-5 A DPHA PBG-3057 B / C / D / E PGMEA Comparative Example 6 C-6 - - - - - Comparative Example 7 C-7 - - - - - Comparative Example 8 C-8 - - - - - Example 1 C-9 A DPHA PBG-3057 B / C / D / E PGMEA Example 2 C-10 A DPHA PBG-3057 B / C / D / E PGMEA Example 3 C-11 A DPHA PBG-3057 B / C / D / E PGMEA Example 4 C-12 A DPHA PBG-3057 B / C / D / E PGMEA Example 5 C-13 A DPHA PBG-3057 B / C / D / E PGMEA Example 6 C-14 A DPHA PBG-3057 B / C / D / E PGMEA Example 7 C-15 A DPHA PBG-3057 B / C / D / E PGMEA Example 8 C-16 A DPHA PBG-3057 B / C / D / E PGMEA Example 9 C-17 A DPHA PBG-3057 B / C / D / E PGMEA Example 10 C-18 A DPHA PBG-3057 B / C / D / E PGMEA Example 11 C-19 A DPHA PBG-3057 B / C / D / E PGMEA Example 12 C-20 A DPHA PBG-3057 B / C / D / E PGMEA Example 13 C-21 A DPHA PBG-3057 B / C / D / E PGMEA

In Table 4, in Comparative Examples 1 to 4 and 6 to 8, evaluation of the coloring agent dispersion was impossible due to gelation.

[Evaluation of colorant dispersion]

The obtained colorant dispersions (C-1 to C-21) were evaluated for particle size and storage stability by the following methods.

(Particle size evaluation method)

A 1 cm X 5 cm quartz cell was filled with PGMEA (propylene glycol monomethyl ether acetate) at about one-quarter of the height, and about 1 to 2 drops of the prepared colorant dispersion was dropped. Using a particle size analyzer (Malvern Zetasizer nano-ZS90). The degree of refinement was evaluated based on the particle size measurement results. The results of the particle size measurement are shown in Table 5 below.

Complex Dispersion Composition Particle size measurement result (nm) B-1 C-1 Comparative Example 1 Gelation B-2 C-2 Comparative Example 2 Gelation B-3 C-3 Comparative Example 3 Gelation B-4 C-4 Comparative Example 4 Gelation B-5 C-5 Comparative Example 5 88.8 B-6 C-6 Comparative Example 6 Gelation B-7 C-7 Comparative Example 7 Gelation B-8 C-8 Comparative Example 8 Gelation B-9 C-9 Example 1 63.2 B-10 C-10 Example 2 71.3 B-11 C-11 Example 3 66.3 B-12 C-12 Example 4 65.7 B-13 C-13 Example 5 54.6 B-14 C-14 Example 6 68.9 B-15 C-15 Example 7 67.4 B-16 C-16 Example 8 58.2 B-17 C-17 Example 9 53.1 B-18 C-18 Example 10 55.4 B-19 C-19 Example 11 62.5 B-20 C-20 Example 12 56.8 B-21 C-21 Example 13 67.0

Dispersions C-9 to C-21 obtained by micronization using a dispersant containing a first xanthene dye, a second xanthene dye and an ammonium structure were dispersed in a colorant dispersion liquid having a particle size of 40 to 80 nm .

(Storage stability evaluation method)

The initial viscosity of the colorant dispersion at 25 ° C on the day when the colorant dispersion was prepared and the viscosity after preservation in convection oven at 40 ° C for 7 days were measured using a viscometer (Toki Sangyo Viscometer TV-25) at a revolution of 100 rpm . The rate of change in viscosity with time was calculated based on the following formula. Based on the calculated rate of change in viscosity over time, the storage stability was evaluated based on the following criteria. The evaluation results are shown in Table 6 below.

(Initial Viscosity) - (Initial Viscosity)] X100 (Initial Viscosity)

?: Less than 5%,?: Less than 5 to 10%, X: 10% or more

Complex Dispersion Composition Viscosity (cP) Viscosity
Rate of change (%) Evaluation results Early Seven days B-1 C-1 Comparative Example 1 Gelation - X B-2 C-2 Comparative Example 2 Gelation - X B-3 C-3 Comparative Example 3 Gelation - X B-4 C-4 Comparative Example 4 Gelation X B-5 C-5 Comparative Example 5 4.19 5.61 34.0 X B-6 C-6 Comparative Example 6 Gelation - - X B-7 C-7 Comparative Example 7 Gelation - - X B-8 C-8 Comparative Example 8 Gelation - - X B-9 C-9 Example 1 3.89 4.02 3.3 ◎ B-10 C-10 Example 2 3.65 7.36 102.0 X B-11 C-11 Example 3 3.51 4.70 34.0 X B-12 C-12 Example 4 3.33 3.25 2.4 ◎ B-13 C-13 Example 5 3.83 3.70 3.4 ◎ B-14 C-14 Example 6 3.88 3.72 4.1 ◎ B-15 C-15 Example 7 3.95 3.82 3.2 ◎ B-16 C-16 Example 8 3.64 3.52 3.6 ◎ B-17 C-17 Example 9 3.15 3.06 2.8 ◎ B-18 C-18 Example 10 3.37 3.25 3.7 ◎ B-19 C-19 Example 11 4.01 3.83 4.5 ◎ B-20 C-20 Example 12 3.73 3.91 4.8 ◎ B-21 C-21 Example 13 3.55 3.44 3.2 ◎

The dispersions C-9 and C-12 to C-21 were prepared by making a composite using a dispersant containing a first xanthene dye, a second xanthene dye and an ammonium structure and applying a dispersant containing an ammonium structure to the dispersion. , The viscosity stability was excellent and it was in a range that can be preferably used as a color filter.

(Method for evaluating permeability)

The prepared photosensitive coloring composition Comparative Example 5 and Examples 1 to 13 were spin-coated on a 5 cm x 5 cm Glass and pre-baked at 110 ° C for 75 seconds to form a film. The distance between the substrate on which the film was formed and the photo mask was set to 250 mu m, and an exposure amount of 40 mJ / cm < 2 >

The exposed substrate was developed in a developing solution (KOH, 0.05%) for 60 seconds and then heat-treated at 230 캜 for 20 minutes to obtain a color pattern. The color patterns were measured with a spectrophotometer (MCPD) to obtain the transmittances of Comparative Examples 1 to 8 and Examples 1 to 13. The transmittance value is a value obtained by comparing By = 0.051.

(Heat resistance evaluation method)

After post-bake at 230 ° C for 20 minutes and color characteristics confirmed using a spectrophotometer, the substrate was further heat treated in a convection oven at 230 ° C for 5 hours and 30 minutes, And the value of? Eab was confirmed.

Permeability Improvement Rate (%) = Composition Permeability / Permeability of Comparative Example 5

The results of the evaluation of permeability and heat resistance are shown in Table 7 below.

Composition Dispersion Permeability improvement rate Heat resistance (△ Eab) Comparative Example 1 C-1 Not rated Not rated Comparative Example 2 C-2 Not rated Not rated Comparative Example 3 C-3 Not rated Not rated Comparative Example 4 C-4 Not rated Not rated Comparative Example 5 C-5 100% 4.20 Comparative Example 6 C-6 Not rated Not rated Comparative Example 7 C-7 Not rated Not rated Comparative Example 8 C-8 Not rated Not rated Example 1 C-9  107.6% 3.19 Example 2 C-10  108.3% 3.52 Example 3 C-11  108.1% 4.05 Example 4 C-12  107.8% 2.64 Example 5 C-13  107.2% 2.72 Example 6 C-14  107.8% 3.12 Example 7 C-15  108.1% 2.89 Example 8 C-16  109.2% 3.05 Example 9 C-17  109.4% 3.11 Example 10 C-18  108.7% 2.78 Example 11 C-19  106.5% 2.99 Example 12 C-20 110.2% 3.54 Example 13 C-21 109.8% 3.08

Examples 1 to 13 in which the fineness was obtained by combining the first xanthene dye and the dispersant containing the second xanthene dye and the ammonium structure were excellent in brightness and the dispersant containing an ammonium structure was used in the preparation of the colorant dispersion The composition was also excellent in heat resistance.

When a colorant dispersion is prepared by applying a first xanthene dye having the same number of positive charges and negative charges and a second xanthene dye having a negative charge more than 1 positive charge and an ammonium structure to form a colorant dispersion, The viscosity stability and the brightness of the coating film were high.

Claims (20)

A first xanthene dye having the same number of positive and negative charges; And
A second xanthene dye having a number of negative charges larger than that of positive charges by at least 1, and an amine value of 0 to 200 mgKOH / g, wherein the dispersant comprising an ammonium structure is ion-bonded. The colorant composition of claim 1, wherein some or all of the second xanthene dyes are located between adjacent two or more of the first xanthene dyes or adjacent the ends of the first xanthene dyes. The method of claim 1, wherein the first xanthene dye has a maximum absorption wavelength between 500 and 580 nm, and the difference between a maximum absorption wavelength of the first xanthene dye and a maximum absorption wavelength of the second xanthene dye is 100 nm or less ≪ / RTI > [2] The dye sensitized solar cell of claim 1, wherein the first xanthene dye is represented by the following formula (1) and contains the same number of positive and negative dyes, and the second xanthene dye is represented by the following formula Wherein the number of negative charges comprises one or more dyes.
[Chemical Formula 1]

In Formula 1,
R ₁ to R ₄ are the same or different and are each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted heteroaryl group; And a dianhydride comprising a nitrogen atom,
R ₅ to R ₉ are the same or different and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; And a substituted or unsubstituted heteroaryl group, provided that at least one of R ₅ to R ₉ is an anionic group; Sulfonic acid base; Or a sulfonamide group,
R ₁₀ and R ₁₁ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A halogen group; A nitro group; Or a substituted or unsubstituted alkyl group, r ₁₀ and r ₁₁ are integers of 0 to 3, and when r ₁₀ and r ₁₁ are each 2 or more, the structures in parentheses are the same or different from each other.
(2)

In Formula 2,
R ₂₁ to R ₂₄ are the same or different from each other, and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted heteroaryl group; And a dianhydride including a nitrogen atom, and at least one of R ₂₁ to R ₂₄ is an alkyl group substituted or unsubstituted with an anionic group, a sulfonic acid group, or a sulfonamide group; An aryl group substituted with an anionic group, a sulfonic acid group, or a sulfonamide group; Or a heteroaryl group substituted by an anionic group, a sulfonic acid group, or a sulfonamide group,
R ₂₅ to R ₂₉ are the same or different from each other, and each independently hydrogen; heavy hydrogen; Anionic group; A hydroxy group; A sulfonamide group; Sulfonic acid base; A substituted or unsubstituted, straight or branched chain alkyl group having 1 to 30 carbon atoms; A substituted or unsubstituted aryl group; And substituted or unsubstituted heteroaryl groups, provided that at least one of R ₂₅ to R ₂₉ is an anionic group; Sulfonic acid base; Or a sulfonamide group,
R ₃₀ and R ₃₁ are the same or different and each independently hydrogen; heavy hydrogen; A halogen group; A nitro group; Or a substituted or unsubstituted alkyl group, r ₃₀ and r ₃₁ are integers of 0 to 3, and when r ₃₀ and r ₃₁ are each 2 or more, the structures in parentheses are the same or different from each other. 5. The compound according to claim 4, wherein R ₁ to R ₄ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; And a dianhydride comprising a nitrogen atom,
R ₂₁ to R ₂₄ are the same or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; And a dianhydride comprising a nitrogen atom,
And the remaining substituents are as defined in claim 4. The colorant composition according to claim 1, wherein the dispersant comprises 3 to 50 mol% of monomer units containing an ammonium structure based on 100 mol% of total monomer units. The colorant composition of claim 1, wherein the second xanthene dye further comprises a counter cation. The colorant composition of claim 1, wherein the dispersant further comprises a counter anion. The colorant composition according to claim 1, wherein the dispersant is represented by the following formula (7):
(7)

In formula (7)
Ra to Rd are the same or different from each other and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted arylalkyl group; -L-NHCO-R; Or -L-OCO-R, or two of Ra to Rd may be bonded to each other to form a substituted or unsubstituted ring,
R is hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted arylalkyl group,
L is a substituted or unsubstituted alkylene group. The colorant composition of claim 1, wherein the dispersant comprises a unit of formula
[Chemical Formula 8]

In formula (8)
Rb to Rd are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted alkenyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted arylalkyl group, or two of Rb to Rd are bonded to each other to form a substituted or unsubstituted ring,
Z is an alkylene group; An arylene group; -L-NHCO-; Or -L-OCO-, L is an alkylene group,
Re to Rg are the same or different from each other and each independently represents hydrogen; Or an alkyl group. The colorant composition according to claim 10, wherein the dispersant has a weight average molecular weight of 1,000 to 10,000. The colorant composition of claim 1, wherein the colorant composition further comprises at least one of a dye and a pigment. The colorant composition according to claim 1, wherein the diameter of the particles dispersed in the colorant composition is 40 nm to 100 nm. The colorant composition of claim 1, wherein the colorant composition further comprises a solvent. A colorant composition according to any one of claims 1 to 13; Dispersing agent; Binder resin; And a solvent. 16. The colorant dispersion according to claim 15, wherein the diameter of the dispersed particles in the colorant dispersion is from 40 to 80 nm and the viscosity of the colorant dispersion is from 2.5 to 6.5 cP Colorant dispersion. A photosensitive resin composition comprising the colorant dispersion according to claim 15, a binder resin, a polyfunctional monomer and a photopolymerization initiator. The photosensitive resin composition according to claim 17, wherein the photosensitive resin composition further comprises a surface additive. A color filter comprising a transparent substrate and a colored layer provided on the transparent substrate, wherein the colored layer comprises a cured product of the photosensitive resin composition according to claim 17. A liquid crystal display device comprising the color filter according to claim 19.