KR20230106421A - Diketopyrrolopyrrole compound, manufacturing method thereof, colored photosensitive resin composition comprising same, and color filter employing same - Google Patents

Abstract

The present invention provides a diketopyrrolopyrrole compound as a pigment-synergist, which is a key material for improving pigment dispersibility and dispersion stability, and a color filter employing the same can exhibit excellent performance in terms of luminance and coloring strength, which are core performances.

Description

Diketopyrrolopyrrole compound, manufacturing method thereof, colored photosensitive resin composition comprising the same, and color filter employing the same

The present invention relates to a diketopyrrolopyrrole-based compound, a method for preparing the same, a colored photosensitive resin composition comprising the same, and a color filter employing the same.

Due to the characteristics of the display industry, color filters play the most important role among various key parts of LCD in order to obtain more natural colors by realizing more vivid colors, clear contrast and brightness.

The core components of color filters are mainly composed of matrix resin, color paste, photoinitiator, and various additives. Among them, the color phase is a state in which pigments are dispersed, so it can be said to be a key material that determines the luminance and coloring power, which are the core performance of color filters. there is.

In particular, as consumers' needs for display devices such as TVs and smartphones become increasingly demanding, it is very important to maximize transmittance by reducing light scattering through atomization and dispersion of pigment particles in color paste in order to realize brighter and more distinct colors. It can be said that it is important. In this way, the contrast ratio of the display can be improved by improving the luminance of the color filter through the atomized dispersion.

The key material that can atomize the pigment of color paste is the pigment-synergist, which exists between the pigment and the dispersant, so it is necessary to develop a pigment-synergist with improved performance as a key material for atomization of the pigment and improvement of dispersion stability. .

Korean Patent Publication No. 10-2017-0077460 A Japanese Patent Publication 2009-092924 A

An object of the present invention is to provide a pigment-synergist, which is a key material for improving pigment dispersibility and dispersion stability, and to provide a color filter with improved luminance and coloring power, which are key performance in color filters employing the same.

The present invention provides a diketopyrrolopyrrole compound represented by Formula 1 below.

[Formula 1]

[In Formula 1,

R ₁ to R ₅ are each independently hydrogen, halogen, cyano, (C1-C10)alkyl or (C6-C12)aryl;

R ₆ is hydrogen or -COOR ₁₁ ;

R ₁₁ is (C1-C20)alkyl or (C7-C20)arylalkyl;

m and n are independently 1 or 2.]

R ₁ to R ₅ in Formula 1 are each independently hydrogen, halogen, cyano, (C1-C7)alkyl or (C6-C10)aryl; R ₆ is hydrogen or -COOR ₁₁ ; R ₁₁ is (C1-C10)alkyl or (C7-C10)arylalkyl; m and n may be 1 or 2 independently of each other.

In addition, R ₁ to R ₅ in Formula 1 according to an embodiment of the present invention are each independently hydrogen, halogen, cyano, (C1-C5)alkyl or (C6-C10)aryl; R ₆ is hydrogen or -COOR ₁₁ ; R ₁₁ is (C1-C6)alkyl; m and n may be 1 or 2 independently of each other.

A diketopyrrolopyrrole-based compound according to an embodiment of the present invention may be represented by Formula 2 or Formula 3 below.

[Formula 2]

[Formula 3]

[In Chemical Formulas 2 and 3,

R ₃ is hydrogen, halogen, (C1-C3)alkyl or phenyl;

R ₄ is hydrogen, cyano or (C1-C3)alkyl;

R ₆ is hydrogen or -COOR ₁₁ ;

R ₁₁ is (C1-C3)alkyl.]

The diketopyrrolopyrrole compound according to an embodiment of the present invention may be selected from the following compounds.

In addition, the present invention provides a method for producing a diketopyrrolopyrrole compound, and the diketopyrrolopyrrole compound represented by Formula 1 below can be prepared by reacting a compound of Formula 4 with a compound of Formula 5.

[Formula 1]

[Formula 4]

[Formula 5]

[In Chemical Formulas 1, 4 and 5,

R ₁ to R ₅ are each independently hydrogen, halogen, cyano, (C1-C10)alkyl or (C6-C12)aryl;

R ₆ is hydrogen or -COOR ₁₁ ;

R ₁₁ is (C1-C20)alkyl or (C7-C20)arylalkyl;

m and n are independently 1 or 2.]

It provides a colored photosensitive resin composition containing a diketopyrrolopyrrole-based compound according to an embodiment of the present invention, which includes a pigment; And a diketopyrrolopyrrole-based compound according to an embodiment of the present invention as a pigment-synergist; may include, and the pigment is characterized in that it contains a diketopyrrolopyrrole-based red pigment.

In addition, the colored photosensitive resin composition may be used for a color filter.

The diketopyrrolopyrrole compound according to an embodiment of the present invention may be included in an amount of 0.01 to 2.0% by weight based on the total weight of the colored photosensitive resin composition.

In one embodiment of the present invention, the colored photosensitive resin composition may further include one or two or more selected from the group consisting of a dispersing agent, a binder resin, an organic solvent, a photoinitiator, a crosslinking agent, and a surfactant.

The present invention provides a color filter formed by a colored photosensitive resin composition according to an embodiment of the present invention.

In addition, the present invention provides a display device including a color filter according to an embodiment of the present invention.

The diketopyrrolopyrrole compound according to an embodiment of the present invention is a material capable of improving the dispersibility and dispersion stability of a pigment by being included as a pigment-synergist in a colored photosensitive resin composition, and a color filter employing the same is a key performance It can show excellent performance in brightness and coloring strength.

The present invention provides a diketopyrrolopyrrole-based compound, a method for producing the same, a colored photosensitive resin composition comprising the same, and a color filter employing the same.

The singular form used in the present invention may be intended to include the plural form as well, unless the context specifically dictates otherwise.

As described in the present invention, "comprising" is an open-type description having the same meaning as the expression "includes", "includes", "has" or "characterized by", and elements not additionally listed. However, it does not exclude materials or processes.

"Alkyl" described herein includes both straight-chain and branched forms, and may be 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms. In another aspect, alkyl may have 1 to 6 carbon atoms.

As used herein, "aryl" is an organic radical derived from an aromatic hydrocarbon by removing one hydrogen, and is a single or fused ring system containing 4 to 7, preferably 5 or 6, ring atoms in each ring. Including, including a form in which a plurality of aryls are connected by single bonds. A fused ring system may contain an aliphatic ring, such as a saturated or partially saturated ring, and must contain at least one aromatic ring. Also, the aliphatic ring may include nitrogen, oxygen, sulfur, carbonyl, and the like in the ring. Specific examples of the aryl radical include phenyl, naphthyl, biphenyl, indenyl, fluorenyl, phenanthrenyl, anthracenyl, triphenylenyl, pyrenyl, chrysenyl, naphthacenyl, 9,10-dihydro anthracenyl; and the like, but are not limited thereto.

As used herein, “arylalkyl” refers to an alkyl group in which one or more hydrogen atoms are substituted with aryl. wherein aryl and alkyl are as defined above. For example, arylalkyl includes, but is not limited to, benzyl, phenethyl, phenylvinyl, and the like.

“Halogen” as used herein means fluorine, chlorine, bromine or iodine.

The number of carbon atoms described in the alkyl, etc. described in the present invention does not include the number of carbon atoms of the substituent, for example, (C1-C10) alkyl refers to an alkyl having 1 to 10 carbon atoms that does not include the number of carbon atoms of the alkyl substituent.

Hereinafter, the present invention will be described in detail. At this time, if there is no other definition in the technical terms and scientific terms used, they have meanings commonly understood by those of ordinary skill in the art to which this invention belongs, and the gist of the present invention is unnecessary in the following description. Descriptions of known functions and configurations that may be obscure are omitted.

The present invention provides a diketopyrrolopyrrole compound represented by Formula 1 below.

[Formula 1]

[In Formula 1,

R ₁ to R ₅ are each independently hydrogen, halogen, cyano, (C1-C10)alkyl or (C6-C12)aryl;

R ₆ is hydrogen or -COOR ₁₁ ;

R ₁₁ is (C1-C20)alkyl or (C7-C20)arylalkyl;

m and n are independently 1 or 2.]

The color paste employing the colored photosensitive resin composition containing the diketopyrrolopyrrole-based compound enables atomization of pigment particles and maximizes transmittance by reducing scattering of light due to increased dispersibility, and a color filter employing the same The luminance is improved and an excellent contrast ratio can be exhibited.

R ₁ to R ₅ in Formula 1 are each independently hydrogen, halogen, cyano, (C1-C7)alkyl or (C6-C10)aryl; R ₆ is hydrogen or -COOR ₁₁ ; R ₁₁ is (C1-C10)alkyl or (C7-C10)arylalkyl; m and n may be 1 or 2 independently of each other.

According to an embodiment of the present invention, R ₁ to R ₅ in Formula 1 are each independently hydrogen, halogen, cyano, (C1-C5)alkyl or (C6-C10)aryl; R ₆ is hydrogen or -COOR ₁₁ ; R ₁₁ is (C1-C6)alkyl; m and n may be 1 or 2 independently of each other.

In addition, R ₁ to R ₅ in Formula 1 according to an embodiment of the present invention are each independently hydrogen, halogen, cyano, (C1-C5)alkyl or (C6-C10)aryl; R ₆ is hydrogen or -COOR ₁₁ ; R ₁₁ is (C1-C3)alkyl; m and n may be 1 or 2 independently of each other.

A diketopyrrolopyrrole-based compound according to an embodiment of the present invention may be represented by Formula 2 or Formula 3 below.

[Formula 2]

[Formula 3]

[In Chemical Formulas 2 and 3,

R ₃ is hydrogen, halogen, (C1-C3)alkyl or phenyl;

R ₄ is hydrogen, cyano or (C1-C3)alkyl;

R ₆ is hydrogen or -COOR ₁₁ ;

R ₁₁ is (C1-C3)alkyl.]

The diketopyrrolopyrrole compound according to an embodiment of the present invention may be selected from the following compounds.

In addition, the present invention provides a method for producing a diketopyrrolopyrrole compound, and the diketopyrrolopyrrole compound represented by Formula 1 below can be prepared by reacting a compound of Formula 4 with a compound of Formula 5.

[Formula 1]

[Formula 4]

[Formula 5]

[In Chemical Formulas 1, 4 and 5,

R ₁ to R ₅ are each independently hydrogen, halogen, cyano, (C1-C10)alkyl or (C6-C12)aryl;

R ₆ is hydrogen or -COOR ₁₁ ;

R ₁₁ is (C1-C20)alkyl or (C7-C20)arylalkyl;

m and n are independently 1 or 2.]

The method for producing a diketopyrrolopyrrole-based compound according to an embodiment of the present invention can be easily mass-produced through a simple process.

The reaction temperature of the preparation method according to an embodiment can be used at a temperature used in conventional organic synthesis, but may vary depending on the amount of reactants and starting materials, and may be preferably carried out at 60 ° C to 140 ° C, Specifically, it may be performed at 80 °C to 120 °C, and more specifically at 90 °C to 110 °C.

The reaction is terminated after confirming that the starting material is completely consumed through NMR or the like. Thereafter, a process of separating and purifying the target material may be performed through a conventional method such as an extraction process, a process of distilling the solvent under reduced pressure, and column chromatography.

A colored photosensitive resin composition comprising a diketopyrrolopyrrole-based compound according to an embodiment of the present invention is provided, which includes a pigment; And a diketopyrrolopyrrole-based compound according to an embodiment of the present invention as a pigment-synergist; may include, and the pigment is characterized in that it contains a diketopyrrolopyrrole-based red pigment.

The colored photosensitive resin composition of the present invention may contain a colorant other than the diketopyrrolopyrrole red pigment. The other colorant is not particularly limited, and the color and material can be appropriately selected according to the application. Among them, organic pigments and organic dyes are preferable in terms of obtaining pixels having high luminance and color purity.

The colored photosensitive resin composition according to an embodiment of the present invention may be used for a color filter.

The diketopyrrolopyrrole compound according to an embodiment of the present invention may be included in an amount of 0.01 to 2.0% by weight, preferably 0.1 to 1.5% by weight, more preferably 0.2 to 1.0% by weight based on the total weight of the colored photosensitive resin composition.

In one embodiment of the present invention, the colored photosensitive resin composition may further include one or two or more selected from the group consisting of a dispersing agent, a binder resin, an organic solvent, a photoinitiator, a crosslinking agent, and a surfactant.

As the dispersant, commercially available ones may be used as long as they have a nitrogen atom. For example, as a (meth)acrylic dispersant, Disperbyk-2000, Disperbyk-2001, Disperbyk-21116 (above, manufactured by BYK-Chemistry), etc. As a urethane-based dispersant, Disperbyk-161, Disperbyk-162, Disperbyk-165, Disperbyk-167, Disperbyk-170, Disperbyk-182 (above, manufactured by BYK-Chemie), Solsperse 76500 (manufactured by Lubrizol Co., Ltd.) As a polyethyleneimine dispersant, Solsperse 24000 (manufactured by Lubrizol Co., Ltd.), etc. As a polyester dispersant, Ajisper PB821 (non-volatile component 100% by mass), Ajisper PB822, Ajisper PB880, Ajisper In addition to Spur PB881 (above, manufactured by Ajinomoto Fine Techno Co., Ltd.), BYK-LPN 21324 (40% by mass of non-volatile component) (manufactured by BYK), etc. are exemplified, respectively, as a dispersant alone Alternatively, two or more kinds may be mixed and used.

In addition, the present invention provides a method for manufacturing a film by a coating method using a spin coater using the colored photosensitive resin composition according to the present invention, but is not limited thereto, and any film manufacturing method recognized by those skilled in the art is possible. .

The present invention provides a color filter formed by the colored photosensitive resin composition according to an embodiment of the present invention, and the color filter thus prepared can exhibit an excellent contrast ratio by exhibiting improved luminance.

In addition, the present invention provides a display device including a color filter according to an embodiment of the present invention.

Hereinafter, a method for producing a diketopyrrolopyrrole-based compound according to the present invention, a colored photosensitive resin composition including the same, and a method for producing a color filter using the same will be described in detail through specific examples.

[Preparation Example 1] Synthesis of Compound 1

After adding sodium metal (0.6g, 28.8mmol) and FeCl ₃ (0.05g) to tert-amyl alcohol (20ml), it was refluxed until the sodium metal was completely dissolved. After adding compound (11) (0.45 g, 2.52 mmol) and compound (21) (0.42 g, 1.86 mmol) in turn, the mixture was refluxed for 12 hours. After completion of the reaction, methanol was added at room temperature, and the pH was adjusted to acid using acetic acid, and the solid formed after stirring for 30 minutes was filtered. Methanol was used for filtration. The filtered solid was hot filtered in a solvent of EtOH:H2O=1:1 (50ml) to obtain compound (1).

¹ H NMR (400 MHz, C6D6) δ12.7 (s, 1H), 8.0 (d, 2H), 7.7 (d, 2H), 7.5 (m, 5H), 7.1 (s, 2H)

[Production Examples 2 and 3]

Compounds (2) and (3) were obtained in the same manner as in Preparation Example 1, except that compounds (12) and (13) of Table 1 were used instead of compound (11) in Preparation Example 1.

Preparation Example 2: ¹ H NMR (400 MHz, C6D6) δ12.7 (s, 1H), 8.0 (d, 2H), 7.4-7.5 (m, 4H), 7.2 (s, 4H)

Preparation Example 3: ¹ H NMR (400 MHz, C6D6) δ12.7 (s, 1H), 8.0 (d, 2H), 7.4-7.5 (m, 4H), 7.2 (s, 4H)

[Production Example 4]

Compound (4) was obtained in the same manner as in Preparation Example 1, except that the compound (22) of Table 1 was used instead of the compound (21) in Preparation Example 1.

¹ H NMR (400 MHz, C6D6) δ12.7 (s, 1H), 7.8 (d, 2H), 7.7 (d, 2H), 7.5 (m, 5H), 7.2 (s, 2H)

[Production Examples 5 and 6]

Except for using compounds (12) and (13) of Table 1 instead of compound (11) in Preparation Example 1 and using compound (22) of Table 1 instead of compound (21) in Preparation Example 1 And it was carried out in the same manner as in Preparation Example 1 to obtain the following compounds (5) and (6).

Preparation Example 5: ¹ H NMR (400 MHz, C6D6) δ12.7 (s, 1H), 7.8 (d, 2H), 7.4-7.5 (m, 4H), 7.5 (m, 4H)

Preparation Example 6: ¹ H NMR (400 MHz, C6D6) δ12.7 (s, 1H), 7.8 (d, 2H), 7.4-7.5 (m, 4H), 7.5 (m, 4H)

manufacturing compounds reactive compound Preparation Example 1

Preparation Example 2

Preparation Example 3

Production Example 4

Preparation Example 5

Preparation Example 6

In Table 2 below, molecular weight ( m/e ) and maximum absorption wavelength (λ _max ) analysis data of UV-VIS spectrum of Preparation Examples 1 to 6 were described.

EA λ _max (nm) transference number (%) Preparation Example 1 C,67.48; H, 3.79; N.8.05 509 28 Preparation Example 2 C,61.89; H, 3.27; N, 7.18 513 69 Preparation Example 3 C,55.58; H, 2.92; N, 6.57 514 57 Production Example 4 C,68.87; H, 4.33; N, 7.65 521 48 Preparation Example 5 C, 60.70; H, 3.11; N, 7.37 524 49 Preparation Example 6 C,55.23; H, 3.80; N, 5.75 526 62

[Example 1] Preparation of colored photosensitive resin composition 4.0% by weight of Pigment Red No. 254, 0.5% by weight of Preparation Example 1, Dispervic-21116 (BYK-Chemistry) as an acrylic dispersant, 2.0% by weight based on solid content, SPCG as a binder resin -19X (Showa Denko) (acid value 110 KOH mg / g, Mw = 10,000) 3.0% by weight based on solid content and 30.0% by weight of propylene glycol monomethyl ether acetate (PGMEA) as a solvent and 15% by weight of diacetone alcohol were mixed and stirred. After dispersing with a vertical bead mill, 1.0% by weight of binder resin SPCG-19X (Showa Denko) (acid value 110 KOH mg/g, Mw = 10,000) was further added, and Irgacure- as a photoinitiator 369 (BASF) 1.5% by weight, 7.0% by weight of dipentaerythritol hexaacrylate as a crosslinking agent, and 0.01% by weight of Megapack F477 (Dainippon Ink and Chemicals) as a surfactant were sequentially added, followed by 24.49% by weight of PGMEA and diacetone. 10.0% by weight of alcohol was further added and stirred to obtain a red colored photosensitive resin composition.

[Examples 2 to 6] Preparation of colored photosensitive resin composition

A colored photosensitive resin composition was obtained in the same manner as in Example 1, except that Preparation Examples 2 to 6 were used instead of Preparation Example 1 in Example 1.

[Comparative Example 1] Preparation of colored photosensitive resin composition

A colored photosensitive resin composition was obtained in the same manner as in Example 1, except that Preparation Example 1 was not used in Example 1.

[Experimental Example 1] Color characteristic evaluation test of colored photosensitive resin composition

Each colored photosensitive resin composition obtained in Examples 1 to 6 and Comparative Example 1 was formed into a film using a spin coater, and then dried in an oven at 80° C. for 10 minutes to obtain a coating film. The coating film is exposed (pre-bake) with a light intensity of 40 mJ/cm ² using an ultra-high pressure mercury lamp, developed for 60 seconds by spraying using a 0.04% KOH developer (including 0.12% surfactant), and then washed with ultrapure water. The developed coating film thus obtained was thermally cured (post-bake) in an oven at 230° C. for 20 minutes to prepare a film substrate having a pattern for a color filter.

- Chromaticity evaluation

The spectroscopy of the film substrate was measured with an MCPD-3000 colorimeter (manufactured by Otsuka Co., Ltd.), and the XY chromaticity coordinates (x, y) and Y in the XYZ color system of CIE were measured using the characteristic function of the C light source, and the result are shown in Table 3 below.

- Contrast evaluation

Contrast values (maximum luminance value/minimum luminance value, blank value = 20,000) were measured for the film substrate with a contrast meter CT-1 (manufactured by Tsubosaka Electric Co., Ltd.), and the results are shown in Table 3 below.

Pre-bake Post-bake Pre-bake Post-bake color luminance exchange
luminance color luminance exchange
luminance Contrast Contrast Example 1 0.64,
0.3301 22.04 22.02 0.64,
0.3297 21.73 21.79 5132 3296 Example 2 0.64,0.3300 22.04 22.03 0.64,
0.3296 21.71 21.80 5398 3662 Example 3 0.64,0.3306 22.14 22.02 0.64,
0.3303 21.82 21.76 6182 4425 Example 4 0.64,0.3305 22.12 22.02 0.64,
0.3303 21.82 21.76 5314 3648 Example 5 0.64,0.3304 22.09 22.01 0.64,
0.3302 21.78 21.74 5467 3417 Example 6 0.64,0.3295 21.97 22.07 0.64,
0.3292 21.67 21.83 5312 3915 Comparative Example 1 0.64,0.3290 21.87 22.07 0.64,
0.3284 21.48 21.81 4566 3125

As shown in Table 3, the films of Examples 1 to 6 prepared with the composition containing the diketopyrrolopyrrole-based compound according to an embodiment of the present invention were 12.4 to 35.4 in pre-bake compared to Comparative Example 1. %, post-bake showed an improved contrast of 5.5 to 41.6%. Therefore, the diketopyrrolopyrrole compound of the present invention, as a pigment-synergist, enables atomization of pigment particles to increase dispersibility, It can be seen that the acidity reduces light scattering and maximizes the transmittance, so that the contrast ratio of the color filter employing it can be greatly improved.

As described above, the present invention has been described by specific details, limited examples and comparative examples, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above examples, and the present invention Those skilled in the art can make various modifications and variations from these descriptions.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and it will be said that not only the claims to be described later, but also all modifications equivalent or equivalent to these claims belong to the scope of the present invention. .

Claims (13)

A diketopyrrolopyrrole compound represented by Formula 1 below.
[Formula 1]

[In Formula 1,
R ₁ to R ₅ are each independently hydrogen, halogen, cyano, (C1-C10)alkyl or (C6-C12)aryl;
R ₆ is hydrogen or -COOR ₁₁ ;
R ₁₁ is (C1-C20)alkyl or (C7-C20)arylalkyl;
m and n are independently 1 or 2.] According to claim 1,
R ₁ to R ₅ in Formula 1 are each independently hydrogen, halogen, cyano, (C1-C7)alkyl or (C6-C10)aryl;
R ₆ is hydrogen or -COOR ₁₁ ;
R ₁₁ is (C1-C10)alkyl or (C7-C10)arylalkyl;
m and n are 1 or 2 independently of each other, a diketopyrrolopyrrole compound. According to claim 1,
R ₁ to R ₅ in Formula 1 are each independently hydrogen, halogen, cyano, (C1-C5)alkyl or (C6-C10)aryl;
R ₆ is hydrogen or -COOR ₁₁ ;
R ₁₁ is (C1-C6)alkyl;
m and n are 1 or 2 independently of each other, a diketopyrrolopyrrole compound. According to claim 1,
The diketopyrrolopyrrole-based compound is a diketopyrrolopyrrole-based compound represented by Formula 2 or Formula 3 below.
[Formula 2]

[Formula 3]

[In Chemical Formulas 2 and 3,
R ₃ is hydrogen, halogen, (C1-C3)alkyl or phenyl;
R ₄ is hydrogen, cyano or (C1-C3)alkyl;
R ₆ is hydrogen or -COOR ₁₁ ;
R ₁₁ is (C1-C3)alkyl.] According to claim 1,
The diketopyrrolopyrrole-based compound is selected from the following compounds, diketopyrrolopyrrole-based compound.

A method for producing a diketopyrrolopyrrole-based compound represented by the following formula (1) prepared by reacting a compound of formula (4) with a compound of formula (5).
[Formula 1]

[Formula 4]

[Formula 5]

[In Chemical Formulas 1, 4 and 5,
R ₁ to R ₅ are each independently hydrogen, halogen, cyano, (C1-C10)alkyl or (C6-C12)aryl;
R ₆ is hydrogen or -COOR ₁₁ ;
R ₁₁ is (C1-C20)alkyl or (C7-C20)arylalkyl;
m and n are independently 1 or 2.] pigment; And a pigment-synergist of claim 1 diketopyrrolopyrrole-based compound; colored photosensitive resin composition comprising a. According to claim 7,
The pigment is a colored photosensitive resin composition, characterized in that it contains a diketopyrrolopyrrole red pigment. According to claim 7,
The colored photosensitive resin composition is for color filters, the colored photosensitive resin composition. According to claim 7,
The diketopyrrolopyrrole-based compound is contained in an amount of 0.01 to 2.0% by weight based on the total weight of the colored photosensitive resin composition, the colored photosensitive resin composition. According to claim 7,
The colored photosensitive resin composition further comprises one or two or more selected from the group consisting of a dispersing agent, a binder resin, an organic solvent, a photoinitiator, a crosslinking agent, and a surfactant. A color filter formed by the colored photosensitive resin composition of claim 7. A display device comprising the color filter of claim 12 .