KR100665757B1 - Surface modificated carbon black using benzene compounds and carbon black dispersion composition for black matrix of color filter using thereof - Google Patents

Abstract

Provided is carbon black surface-treated with a benzene compound useful for preparing a carbon black dispersion composition for a black matrix, having excellent adhesion, uniformity and resolution of a black matrix pattern and showing no over-development phenomenon. The carbon black for a black matrix is carbon black surface-treated with a benzene compound represented by the following formula 1 and having a dibutyl phthalate(DBP) oil absorption of 30ml/100g to 100ml/100g. In the formula 1, X represents H, COOH, COONa, Ph, substituted Ph, SO3H, SO3Na, NO2, halide or a C1-C5 alkyl. The carbon black is preferably surface treated with 0.5-2.5 micromol/m^3 of the benzene compound.

Description

Surface Modificated Carbon Black using Benzene compounds and Carbon Black Dispersion Composition for Black Matrix of Color Filter Using Technique}

1 is a 500 times magnification of a 25 μm black matrix pattern according to the present invention;

2 is a 3000 times magnification of a 25 μm black matrix pattern according to the present invention;

3 is a photograph of poor linearity of the pattern of the comparative example;

Figure 4 is a photograph of the occurrence of the lower phenomenon of the comparative example.

The present invention relates to a carbon black dispersion composition for black matrices used in the manufacture of color filters in liquid crystal displays. More specifically, the uniformity and resolution of the black matrix pattern can be obtained by using the carbon black dispersion composition prepared by combining carbon black as the main component and an organic dispersant, a polymer, and other additives to produce a black matrix, which is a color filter component of the liquid crystal display device. To improve sex.

Color filters generally use transparent materials such as glass and sheet-shaped resins as substrates, forming a black matrix (border) on the surface of the substrate, and red, green, blue (R, G, B), etc. Mosaic-shaped pixels (color patterns) are sequentially formed using colors. Representative manufacturing methods of color filters include dyeing, printing, pigment dispersion, electrodeposition, and the like.

Among them, in particular, a pigment dispersion method is mainly used. The pigment dispersion method includes an exposure step of applying a photomask on which a photosensitive composition containing a pigment is applied to a transparent substrate, applying a photomask in which a pattern is drawn in advance, a developing step using an aqueous alkali solution, and the like as a developer; A method of manufacturing a color filter through a high temperature thermosetting (drying) process, etc., the precision of the position and film thickness of each pixel on the color filter is good, the physical properties such as light resistance, heat resistance, chemical resistance, etc., defects such as pinholes There are known advantages such as low number.

The black matrix on the color filter is generally formed in an array of lattice, linear, mosaic, etc. between each pixel of R, G, and B, and improves contrast and back light by suppressing mixing of colors. It prevents malfunction of TFT (thin film transistor) by light leakage emitted from the unit. Therefore, a high level of light shielding property is required for the black matrix, and the degree of light blocking property of the black matrix is represented by an optical density (OD) value. The OD value represents the absolute value of the commercial logarithm of the transmittance measured in a specific single wavelength or a specific wavelength range, and means that the larger the OD value, the better the light blocking property of the black matrix.

The existing black matrix is manufactured by forming a thin film of metal and metal oxide such as chromium or chromium oxide. This method is to deposit a metal such as chromium on a transparent substrate, and then undergo a photolithography process to etch the chromium layer. The black matrix thus prepared has the advantage of high light shielding properties and high precision with a very thin film thickness. In addition, the manufacturing process is complicated and dangerous, and there are disadvantages in that a high cost problem due to low productivity and an environmental problem due to the waste liquid generated during the etching process occur.

Therefore, in recent years, light-shielding materials are dispersed in metals such as chromium and chromium oxides, and organic pigments such as carbon black, which are non-polluting materials, to prepare photosensitive resins, and to apply them to the production of black matrices. Has been shifted to the manufacturing direction.

Conventional methods for producing a black matrix using carbon black are disclosed in Japanese Patent Application Laid-Open No. 2004-292672, US Patent No. 4,762,752, Japanese Patent Laid-Open No. 10-204321, Japanese Patent No. 2004-251946, Japanese Patent No. 2004-29745, Japanese Patent No. 2004-4762, Japanese Patent No. 2004-75985, Japanese Patent Laid-Open No. 2004-198717 , Korean Patent 2002-0075502, Japanese Laid-Open No. 11-60989, Japanese Patent Laid-Open No. 10-253820, Japanese Patent Laid-Open No. 10-10311, Japanese Patent Laid-Open No. 9-22653, and the like. These methods mainly relate to the primary particles of carbon black and the type of structure and the surface treatment method of carbon black for imparting high resistance or dispersibility, the type of surface treatment agent, and the like. The performance of adhesion and high resistance has been improved, but the uniformity and resolution of the black matrix pattern have not been studied. In Japanese Patent Laid-Open No. 2004-198717, filed by Japan Fire Hydrant Co., Ltd., there is a reference to the resolution of the black matrix pattern.

As LCD screens are gradually enlarged for mobile phones, notebook PCs, etc., and TV monitors, the brightness of LCD screens becomes an important factor in determining LCD display quality. Considering that it is the refinement of the black matrix, the uniformity and resolution of the black matrix pattern are becoming more important.

The present invention relates to a pigment dispersion for black matrices using carbon black and a method for producing the same, and to provide a carbon black dispersion composition for black matrices having improved uniformity and resolution of a black matrix pattern over conventional pigment dispersion compositions. Shall be.

   The present invention provides a carbon black surface treated with a benzene compound represented by the following Chemical Formula 1.

[Formula 1]

(X: H, COOH, COONa, Ph, substituted Ph, SO ₃ H, SO ₃ Na, NO ₂ , Halide or C _{1 to} C ₅ alkyl, etc.)

The carbon black is characterized in that the surface treatment amount of the benzene compound is 0.5 ~ 2.5μmol / ㎡.

remind Carbon black is characterized in that the dibutyl phthalate (DBP) oil absorption amount is 30ml / 100g-100ml / 100g.

The present invention also provides a carbon black dispersion composition for a black matrix, comprising the carbon black, a dispersant, and a solvent.

The present invention also provides a black black carbon black dispersion composition comprising a carbon black, a dispersant, and a solvent, the black further comprising a cardo-based compound which is any one or a mixture of cardo-based monomers, oligomers, and polymers. It provides a carbon black dispersion composition for the matrix.

The carbon black dispersion composition for the black matrix is characterized in that it comprises 0.1 to 20% by weight of a cardo-based compound which is any one or a mixture of cardo-based monomers, oligomers and polymers.

The composition is 5 to 40% by weight of carbon black, 1 to 10% by weight of the dispersant, 0.1 to 20% by weight of the cardo-based compound, any one or a mixture of cardo-based monomers, oligomers and polymers and 30 to 90% by weight of It is characterized by including a solvent.

The cardo-based compound is characterized in that it comprises 0.1 to 20% by weight of a cardo-based polymer.

remind The cardo-based compound is characterized in that it comprises 0.1 to 20% by weight of a cardo-based monomer or oligomer.

remind Carbon black is a carbon black having a dibutyl phthalate (DBP) oil absorption of 30 mL / 100 g to 100 mL / 100 g.

The dispersant is a modified polyurethane block copolymer having a molecular weight of 5,000 to 20,000.

The cardo-based polymer is characterized by using a molecular weight of 1,000 to 8,000 of the formula (2).

 [Formula 2]

(R ₁ and R _2: hydrogen atom, alkyl group or halogen atom, R _3: hydrogen atom or methyl group,

Y: -O-,-NR _5- (R ₅ = H, methyl group, ethyl group, CH ₂ OH, C ₂ H ₄ OH or CH ₂ CH = CH ₂ ) or -C (= O) O-,

Z and Z 'are derivatives of acid monoanhydrides and acid double anhydrides.)

The cardo-based monomer or oligomer is characterized in that the cardo-based monomer or the oligomer of formula (3).

[Formula 3]

(R ₁ and R _{2: a} hydrogen atom, an alkyl group or a halogen atom,

Y: -O-, -NR _5- (R ₅ = H, methyl group, ethyl group, CH ₂ OH, C ₂ H ₄ OH or CH ₂ CH = CH ₂ ) or -C (= O) O-.)

remind The cardo-based compound is characterized in that it comprises 0.5 to 10% by weight of a cardo-based polymer.

The cardo-based compound is characterized in that it comprises 0.1 to 10% by weight of a cardo-based monomer or oligomer.

remind Carbon black is a surface treated with a benzene compound of the formula (1) characterized in that the surface treatment amount of carbon black is 0.5 ~ 2.5μmol / ㎡.

[Formula 1]

(X: H, COOH, COONa, Ph, substituted Ph, SO ₃ H, SO ₃ Na, NO ₂ , Halide or C _{1 to} C ₅ alkyl, etc.)

In addition, the carbon black dispersion composition for a black matrix of the present invention is characterized in that it further comprises 0.1 to 10% by weight of the dispersion aid.

The dispersing aid is characterized in that the quaternary ammonium salt of formula (4).

[Formula 4]

_{(R 1 ~ R 4: C} 1 ~ C 20 alkyl group, a benzyl group, an aryl group, X a ^{-: Cl -, Br -,} I -.)

The solvent is characterized in that any one or a mixture of propylene glycol monomethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate, ethyl cellosolve, polyethylene glycol.

The present invention provides a black matrix for color filters prepared using the carbon black dispersion composition.

The present invention provides a color filter including the black matrix.

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

The present invention relates to a carbon black dispersion composition for a black matrix used for a liquid crystal display color filter, and includes a carbon black, a dispersant, and a solvent. The present invention also relates to a carbon black dispersion composition for black matrices, comprising: 5 to 40% by weight of carbon black, 1 to 10% by weight of dispersant, 0.1 to 20% by weight of cardo-based monomers, oligomers, and polymers; It may contain the cardo-type compound which is the mixture, and 30 to 90 weight% of a solvent.

In the present invention, the carbon black preferably has a primary particle diameter of 10 to 60 nm. Most preferably, it is 20-40 nm. When the particle diameter is smaller than 10 nm, dispersion is difficult, and when it exceeds 60 nm, the OD value is lowered, which is not preferable. Carbon black is not particularly limited depending on the production method, any of ordinary oil furnace black, gas furnace black, thermal black, acetylene black, channel black and the like can be used.

In the present invention, the carbon black is preferably used to give a specific surface treatment using those having a primary particle size in the above range. The surface treatment of the carbon black is made by introducing an organic affinity group on the surface of the carbon black to improve the dispersibility in the organic solvent and to improve the uniformity and resolution of the black matrix. Surface treatment of the carbon black in the present invention was carried out using the benzene compound of the formula (1) as follows.

 Carbon black surface treatment structure 1;

(X: H, COOH, COONa, Ph, substituted Ph, SO ₃ H, SO ₃ Na, NO ₂ , Halide or C _{1 to} C ₅ alkyl, etc.)

In the present invention, the performance of the black matrix greatly depends on the type and amount of the carbon black surface treatment agent, and the selection of these surface treatment agents may be determined according to the type and amount of the photosensitive resin solution and the polymer. For example, a black matrix photosensitive resin solution when using the dipentaerythritol hex acrylate (DPHA) a polymer resin during manufacture as a crosslinking agent, using to step Kadoma, than if the substituent (X) is _{C 1 ~ C 5 SO 3 Na} ( Alternatively, in the case of SO ₃ H) and COONa (or COOH), the dispersibility was excellent and the uniformity and resolution of the black matrix were also excellent.

Even when the substituent is COONa (or COOH), the performance varies depending on the degree of substitution, most preferably 0.5 to 2.5 mol / m 2. If the COONa (or COOH) substitution is less than 0.5 μmol / m 2, the dispersibility is not sufficiently improved. On the contrary, if the degree of substitution exceeds 2.5 μmol / m 2, overdevelopment occurs during the development process using an aqueous alkali solution, and the line width of the black matrix pattern is reduced and uniform. The castle falls. In particular, there is a disadvantage in that the linearity and undercut of the pattern appear, it is preferable to design in consideration of the above matters.

In the present invention, when a substituent (eg COONa or SO ₃ Na) which is a salt is to be converted into carboxylic acid, the material is treated with 1% by weight hydrochloric acid solution before drying or washed sufficiently or the following surface treatment. As in the structure 2, the diazo material may be prepared in a hydrochloric acid or nitric acid solution having a pH of 4 or less and reacted with carbon black.

   Carbon black surface treatment structure 2;

It is preferable that the dibutyl phthalate (DBP) oil absorption amount of carbon black after the said surface treatment is 30 ml / 100 g-100 ml / 100 g. Less than 30 ml / 100 g of carbon black is too small to disperse the dispersion, and if it exceeds 100 ml / 100 g, the structure becomes too large and the gap between the structures increases, so that the filling rate of the carbon black particles per unit volume is lowered. You will not be able to gain Luminance.

The dispersant used in the present invention is preferably a modified polyurethane block copolymer having a molecular weight in the range of 5,000 to 20,000. If the molecular weight is less than 5,000 does not show the dispersing performance, on the contrary, if the molecular weight is larger than 20,000, the adhesion of the black matrix pattern is reduced, the pattern is lost, and as a result, the resolution is reduced.

Dispersants that can be used in the present invention include toluene diisocyanate and hexadecanol-modified polycaprolactone as main components, and these dispersants may use a product which is manufactured or marketed in-house. Commercially available products include, for example, BYK's Disperbyk 161, Disperbyk 163, Disperbyk 164, Disperbyk 166, Disperbyk 167, Disperbyk 169, and Avecia's Solsperse 24000, Solsperse 32550, Solsperse 38500, Solsperse 31845, and EFKA, It is preferable to select from 4046, EFKA 4047 and the like.

The amine titers of the dispersant are 10-20 mgKOH / g, and in the present invention, the amine titer of the dispersant does not particularly influence the dispersion performance and the black matrix performance.

In the present invention, the cardo-based compound is preferably any one or a mixture of cardo-based monomers, oligomers and polymers. In the present invention, the cardo-based polymer has a structure as shown in the following formula (2).

    [Formula 2]

(R ₁ and R _2: hydrogen atom, alkyl group or halogen atom, R _3: hydrogen atom or methyl group

Y: -O-, -NR _5- (R ₅ = H, methyl group, ethyl group, CH ₂ OH, C ₂ H ₄ OH or CH ₂ CH = CH ₂ ) or -C (= O) O-

Z and Z 'are derivatives of acid monoanhydride and acid dianhydride.)

The cardo-based polymer of the present invention is preferably used the same or similar to the cardo-based polymer used in the preparation of the photosensitive resin solution for the cardo-based black matrix. If the amount of the polymer is 0.1 to 20% by weight, and the addition amount is less than 0.1, sufficient performance cannot be expected. If the amount is more than 20% by weight, the viscosity of the dispersion rises, so that it is difficult to adjust the film thickness during application. . The addition amount of especially preferable polymer is 0.5 to 10 weight%.

In the present invention, the addition of the polymer is not simply added after preparing the pigment dispersion, but is added simultaneously with other components during the pigment dispersion to induce codispersion, thereby improving not only the performance of the black matrix but also the improvement of stability and dispersion of the dispersion. It works. Any polymer can be used as long as the polymer used by this invention is 1,000-8,000. The addition of the polymer in the present invention has the effect of greatly improving the uniformity and resolution of the black matrix pattern.

The cardo-based monomer or oligomer thereof used in the present invention has a structural formula as shown in Chemical Formula 3, and participates in photocuring and thermosetting to promote uniformity and resolution of the black matrix pattern.

[Formula 3]

(R ₁ and R _{2: a} hydrogen atom, an alkyl group or a halogen atom,

Y: -O-, -NR _5- (R ₅ = H, methyl group, ethyl group, CH ₂ OH, C ₂ H ₄ OH or CH ₂ CH = CH ₂ ) or -C (= O) O-.)

The cardo-based monomer has a cardo structure and a glycidyl group, and not only has excellent affinity with the polymer used for preparing the black matrix photosensitive resin solution, but also a carboxylic acid in which the glycidyl group is present in the polymer during exposure or high temperature drying. Through ring opening polymerization, the adhesion of carbon black with the polymer and the uniformity and resolution of the black matrix pattern are enhanced. In the case of having an epoxy group such as the glycidyl group, the curing shrinkage was found to be the smallest.

When the addition amount of the cardo-based monomer or oligomer is 0.1 to 20% by weight, the above effect cannot be sufficiently exhibited. When the amount of the cardo-based monomer or oligomer is less than 0.1, the viscosity of the dispersion increases when it is more than 20% by weight. Since the amount of carbon black is relatively reduced after formation, the OD value is lowered, which is not preferable. The addition amount of especially preferable cardo type monomer or oligomer is 0.1-10 weight%. In the present invention, the cardo-based monomer or oligomer is prepared after using the cardo-based material and epichlorohydrin as starting materials.

In the present invention, in order to maximize the dispersing effect, additionally 0.1 to 10% by weight of a dispersing aid may be used. Examples include Avecia Solsperse 5000, Solsperse 12000, and Solsperse 22000. These materials are copper phthalocyanine-based pigment derivatives that provide affinity with carbon black for dispersing agents. It is possible to obtain the effect that the dispersibility is enhanced than when used alone.

In the present invention, quaternary ammonium salts may be used to control the particle size and particle size distribution of the carbon black dispersion. The quaternary ammonium salts usable in the present invention can be used as long as they have the following structural formulas. In particular, when the quaternary ammonium salt is used, the particle size of the dispersion is improved by 10 to 20 nm than when not used.

The quaternary ammonium salt that can be used in the present invention has a structural formula as shown in Formula 4 below, for example tetramethylammonium chloride, tetraethylammonium chloride, tetrabutylammonium chloride, lauryltrimethylammonium chloride, hexadecyltrimethylammonium chloride, Octadecyltrimethylammonium chloride, dimethyldilaurylammonium chloride, and the corresponding bromide and iodide, respectively. It is preferable to add 0.1-2 weight% of these quaternary ammonium salts. If the amount is less than 0.1% by weight, the dispersing effect may not be maximized. If the content is more than 2% by weight, the viscosity of the dispersion may be increased and economically unfavorable. These quaternary ammonium salts can also be used individually or in mixture of 2 or more types.

 [Formula 4]

_{(R 1 ~ R 4: C} 1 ~ C 20 alkyl group, a benzyl group, an aryl group, X a ^{-: Cl -, Br -,} I -.)

In the present invention, in consideration of the ease of operation in the color filter manufacturing process and compatibility with the resin and other photosensitive resin solution composition, it is preferable to use a high boiling point organic solvent. For example, propylene glycol monomethyl ether acetate (PGMEA), cyclohexanone, ethyl 3-ethoxypropionate, ethyl cellosolve, polyethylene glycol, etc. may be used, and these solvents may be used alone or in combination of two or more thereof. Can be used.

In the present invention, the dispersion may be any of a method using a bead, a method using a rotor and a stator, and a high pressure dispersion method using an orifice. In the case of using the beads, it is most preferable to use beads having a size of 0.1 mm to 0.8 mm of zirconium oxide in consideration of the dispersion time and the particle size and distribution of the dispersion.

In the present invention, it is possible to provide a black matrix for a color filter manufactured using the carbon black dispersion composition, and to provide a color filter including the black matrix.

Hereinafter, the present invention will be described in more detail with specific examples. The following examples are intended to illustrate the present invention in detail and do not limit the scope of the present invention by these examples.

Example 1

1) Surface treated carbon black

Degussa's Carbon black with 300g BET specific surface area 30㎡ / g and DBP oil absorption 94ml / 100g in Daehwa Tech's Planetary mixer equipped with 1L reaction vessel 100) and 3.4 g of paraaminobenzoic acid. The Planetary mixer is stirred for 30 minutes at 80 rpm and 250 rpm. A solution of sodium nitrite (NaNO ₂ ) dissolved in 300 ml of deionized water was added. After further stirring for 1 hour, the product was taken out and dried for 5 hours in an oven at 90 ° C. to obtain carbon black substituted with sodium parabenzoate. The result of thermogravimetric analysis (TGA) showed that the volatile content was 1.2% Vol and the surface treatment amount was 1.5 μmol / m 2.

2) Dispersion Preparation

300 g of 0.5 mm zirconium oxide beads were placed in a 1 L basket mill equipped with a stirrer and a cooling jacket, followed by 380 g of PGMEA solvent, and 90 g of the surface-treated carbon black. Next, 26 g of BYK dispersant Disperbyk 161 and 18 g of a cardo polymer having a molecular weight of 3,000 and 4 g of 4,4 '-(9-fluorenylidene) diphenolglycidyl ether were added at 15 ° C. and 1000 rpm. 4 hours dispersion. The particle size of the dispersion was measured by Japan's Horiba LB 500 and the viscosity was measured by a viscometer DV-II + Pro.

Measurement results of the average particle diameter, viscosity, and dispersion stability of the dispersion are shown in Tables 1 and 2, and a black matrix photosensitive resin solution was prepared in the same manner as in Example 16 except that the cardo-based polymer was added, and the physical properties thereof were evaluated. Table 2 shows.

[Examples 2 to 12]

As described in Table 1 and Table 2, except that the type and surface treatment amount of the carbon black and the surface treatment agent were changed.

[Examples 13 and 14]

The same procedure as in Examples 11 to 12 was performed except that 4 g of hexadecyltrimethylammonium bromide was further used as a co-dispersant.

Example 15

As in Table 1, it was carried out in the same manner as in Example 1 except that carbon black was not used.

[Comparative Examples 1 to 3]

As shown in Table 1, the dispersion was prepared in the same manner as in Example 1 except that the carbon black was not subjected to the surface treatment, but the primary particle diameters were different, and the cardo-based compound was not used.

Example 16

3) Preparation and evaluation of black matrix photosensitive resin solution

5.0 g of cardo-based polymer, 0.7 g of DPHA monomer or oligomer, 0.6 g of photoinitiator (IRG OXE01) and 60 g of PEMEA as a solvent were added to 32.0 g of the dispersion of Example 1, followed by stirring for 1 hour using a homogenizer. Then, a photosensitive resin solution was prepared by filtration using a 20 μm depth filter. The composition was spin-coated onto a 10 × 10 cm glass substrate, dried at 80 ° C., and then exposed to 100 mJ / cm 2 with a photomask of 1-25 μm in various shapes and sizes at 23 ° C. after exposure at 100 mJ / cm 2. It was developed with 430 ppm KOH solution. The developed substrate was washed with high temperature at 220 ° C. for 40 minutes, and the linearity and resolution of the black matrix pattern were observed with an optical microscope. The cross section of the pattern was measured by scanning electron microscopy (SEM). Dispersion stability was measured by the average particle diameter and viscosity after 30 days left in a 40 ℃ oven, the resolution was evaluated as the pattern of the minimum size remaining after development in a specific pattern of 1 to 25㎛ size. The measurement results are shown in Table 3.

[Examples 17 and 18]

A black matrix photosensitive resin solution was prepared and evaluated using 32.0 g of the dispersion liquid of Examples 2 and 3 as shown in Table 3, respectively.

Example 19

A black matrix photosensitive resin solution was prepared and evaluated using 32.0 g of the dispersion solution of Example 15 as shown in Table 3.

[Examples 20 and 21]

32.0 g of the dispersion liquids of Examples 13 to 14 were prepared and evaluated in the composition as shown in Table 3, respectively.

[Comparative Examples 4 to 6]

32.0 g of the dispersion liquids of Comparative Examples 1 to 3 were prepared and evaluated in a composition without using a cardo-based compound as shown in Table 3.

○: particle size and viscosity change within ± 5%, △: ± 5% to ± 20%, ×: ± 20% or more)

 Unit: wt%

FDPE: 4,4- (9-fluorenylidene) diphenolglycidyl ether

Cardo resin: M.W. 4,000

MAA: Methyl methacrylate

BzMA: benzyl methacrylate

Acrylic resin: MAA / BzMA copolymer (M.W. 15,000)

The black matrix pattern has excellent adhesion, uniformity and resolution by selectively using a cardo-based compound which is any one or a mixture of carbon black, cardo-based monomers, oligomers and polymers surface-treated with an organic compound according to the present invention. A carbon black dispersion composition for black matrices without development could be provided.

Claims (21)

A carbon black surface-treated with a benzene compound of Formula 1, wherein the dibutyl phthalate (DBP) oil absorption amount is 30 mL / 100 g to 100 mL / 100 g. [Formula 1]

(X: H, COOH, COONa, Ph, substituted Ph, SO ₃ H, SO ₃ Na, NO ₂ , Halide or C ₁ -C ₅ alkyl) The carbon black is carbon black, characterized in that the surface treatment amount of the benzene compound is 0.5 ~ 2.5μmol / ㎡. delete The carbon black dispersion composition for black matrices containing carbon black, a dispersing agent, and a solvent of Claim 1 or 2.    A carbon black dispersion composition for black matrices comprising a carbon black, a dispersant, and a solvent, the carbon black dispersion for black matrices further comprising a cardo-based compound which is any one or a mixture of cardo-based monomers, oligomers, and polymers. Composition. The carbon black dispersion for black matrix according to claim 5, wherein the carbon black dispersion composition for the black matrix comprises 0.1 to 20% by weight of a cardo-based compound which is any one or a mixture of cardo monomers, oligomers and polymers. Composition.   The cardo-based compound according to claim 5, wherein the composition is any one or a mixture of 5 to 40% by weight of carbon black, 1 to 10% by weight of a dispersant, 0.1 to 20% by weight of cardo-based monomers, oligomers and polymers, and The carbon black dispersion composition for black matrices containing 30 to 90 weight% of a solvent. The carbon black dispersion composition for a black matrix according to claim 5, wherein the cardo-based compound comprises 0.1-20% by weight of a cardo-based polymer. The method of claim 5, wherein The cardo-based compound comprises 0.1 to 20% by weight of a cardo-based monomer or oligomer, carbon black dispersion composition for black matrix. The method of claim 5, wherein Carbon black is a carbon black dispersion composition for a black matrix, wherein the dibutyl phthalate (DBP) oil absorption is 30 ml / 100g to 100ml / 100g. 6. The carbon black dispersion composition for a black matrix according to claim 5, wherein the dispersant is a modified polyurethane block copolymer having a molecular weight of 5,000 to 20,000. The carbon black dispersion composition for a black matrix according to any one of claims 5 to 7, wherein the cardo-based polymer has a molecular weight of 1,000 to 8,000 of the formula (2).  [Formula 2]

(R ₁ and R _2: hydrogen atom, alkyl group or halogen atom, R _3: hydrogen atom or methyl group,

Y: -O-,-NR _5- (R ₅ = H, methyl group, ethyl group, CH ₂ OH, C ₂ H ₄ OH or CH ₂ CH = CH ₂ ) or -C (= O) O-, Z and Z 'are derivatives of acid monoanhydrides and acid double anhydrides.) The carbon black dispersion composition for a black matrix according to any one of claims 5 to 7, wherein the cardo-based monomer or oligomer is a cardo-based monomer of Formula 3 or an oligomer thereof. [Formula 3]

(R ₁ and R _{2: a} hydrogen atom, an alkyl group or a halogen atom,

Y: -O-, -NR _5- (R ₅ = H, methyl group, ethyl group, CH ₂ OH, C ₂ H ₄ OH or CH ₂ CH = CH ₂ ) or -C (= O) O-.) The method of claim 5, wherein The cardo-based compound comprises 0.5 to 10% by weight of a cardo-based polymer, carbon black dispersion composition for a black matrix. The carbon black dispersion composition for a black matrix according to claim 5, wherein the cardo-based compound contains 0.1-10 wt% of a cardo-based monomer or oligomer. The method of claim 5, wherein Carbon black is a carbon black dispersion composition for a black matrix, characterized in that the surface treated with a benzene compound of the formula (1) is a carbon black having a surface treatment amount of 0.5 ~ 2.5μmol / ㎡. [Formula 1]

(X: H, COOH, COONa, Ph, substituted Ph, SO ₃ H, SO ₃ Na, NO ₂ , Halide or C ₁ -C ₅ alkyl)   The carbon black dispersion composition for a black matrix according to claim 5, further comprising 0.1 to 10% by weight of a dispersing aid. 18. The carbon black dispersion composition for a black matrix according to claim 17, wherein the dispersing aid is a quaternary ammonium salt of formula (4). [Formula 4]

_{(R 1 ~ R 4: C} 1 ~ C 20 alkyl group, a benzyl group, an aryl group, X a ^{-: Cl -, Br -,} I -.) The black matrix according to claim 5, wherein the solvent is any one selected from propylene glycol monomethyl ether acetate, cyclohexanone, ethyl 3-ethoxypropionate, ethyl cellosolve, and polyethylene glycol or a mixture thereof. Carbon black dispersion composition.   The black matrix for color filters manufactured using the carbon black dispersion composition of Claim 5.   A color filter comprising the black matrix of claim 20.

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