KR100715223B1 - Method for manufacturing the pigment dispersion composition by ultrasonic dispersion method and raw material for pigment dispersion composition therein - Google Patents

Abstract

Provided are a method for producing a pigment dispersion composition for a liquid crystal display device color filter using an ultrasonic dispersion method and a pigment dispersion composition for a liquid crystal display device color filter for use in an ultrasonic disperser. The method for manufacturing a pigment dispersion composition for a liquid crystal display device color filter using an ultrasonic dispersion method is characterized in that the raw material of a predetermined pigment dispersion composition is dispersed to have a predetermined particle size by ultrasonic energy. And it contains 10 to 20% by weight of organic pigment, 3 to 10% by weight of a polymer dispersant having a pigment affinity group, 0.01 to 1% by weight of a pigment derivative, 70 to 80% by weight of a solvent.

Liquid Crystal Display, TFT-LCD, Pigment Dispersion, Ultrasonic

Description

Manufacture method of pigment dispersion composition for liquid crystal display device color filter using ultrasonic dispersion method and pigment dispersion composition for color filter liquid crystal display device used in ultrasonic disperser composition therein}

The present invention relates to a method for preparing a pigment dispersion composition for a liquid crystal display device color filter using an ultrasonic dispersion method and a pigment dispersion composition for a liquid crystal display device color filter used in an ultrasonic disperser, and more specifically, to high purity using an ultrasonic dispersion machine. A method of preparing a pigment dispersion composition for a color filter of a liquid crystal display device which can have a very fine particle size and excellent particle distribution, and an ultrasonic disperser used as a raw material in the present method. It relates to a pigment dispersion composition for a liquid crystal display device color filter used.

With the rapid development of technology in the TFT-LCD field today, the application field is also being colored and enlarged like a laptop or a TV in a small black and white display such as an electronic calculator or an electronic clock. As the display becomes larger in size, high brightness, high definition, and high color reproducibility are required, and for this purpose, the characteristics of the pigment dispersion used in the color filter photoresist for TFT-LCD also need physical properties that satisfy these requirements. . In general, in order for the pigment dispersion to exhibit high brightness, high definition, and high color reproducibility, the pigment dispersion should have a particle size and uniform particle distribution on the order of tens of nanometers, and an appropriate composition combination is required to prevent reaggregation of the dispersed pigment. do.

The dispersion of the pigment dispersion is a common method of dispersing a medium such as glass beads, zirconium beads in a disperser by applying a physical force. There are two methods of disperser, smearing or shearing types, and smashing or impact types.

Dispersion by applying strong shearing force includes roller mills, colloid mills, and the like. This method disperses as the pigment dispersant breaks through the fine gaps of the media, such as rollers or disks, while the large particles are broken down into smaller particles by the strong shearing force generated by the media.

However, this method has the advantage of being able to grind a pigment that is difficult to grind and obtain a high quality pigment dispersant, but has a problem that the amount of discharge is small and it is difficult to disperse it into a size of several tens of nanometers.

Impingement mills are a typical method of dispersing by giving a strong impact. This method involves the movement of a pigment dispersant between a disc with a long and thin hole and a small disc formed therein. To disperse the particles.

However, this method also has the advantage that a large amount of pigment dispersion can be processed through a series of processes such as pretreatment, dispersion, dilution, etc. in a disperser, but is suitable for pigments that are relatively easily pulverized and dispersed, There is a problem that the pigment particles may be damaged by.

In order to solve the above problems, a method of simultaneously applying a strong shearing force and an impact (hybrid type) is proposed, such as pebble mills, sand mills, and bead mills. .

This method is to insert a medium such as pebble, sand, bead into the chamber and rotate at high speed by using an impeller.

However, even with this method, it is possible to make very fine pigment dispersion according to the type of bead or process conditions, and to apply to almost all pigments, but different dispersion results can be obtained depending on the medium used. It is very difficult to hold and there is a high possibility of contamination of the pigment dispersion due to wear of the beads in the manufacturing process.

Until now, the above methods have been used for the production of pigment dispersions for electronic materials, such as paint, ink, and pigment dispersions for color filters in liquid crystal displays, but due to the problems described above, they have a finer particle size and a uniform particle distribution. Research and development of dispersion methods that can have

The technical problem to be achieved by the present invention is a liquid crystal display device using an ultrasonic dispersion method that can produce a pigment dispersion composition for color filter photosensitizer excellent in color and optical properties such as high brightness, high definition, high color reproducibility than conventional pigment dispersion composition It is to provide a method for producing a pigment dispersion composition for color filters.

Another object of the present invention is to provide a pigment dispersion composition for a color filter of a liquid crystal display device used in an ultrasonic disperser.

Technical problems to be achieved by the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

In order to solve the above technical problem, a method of manufacturing a pigment dispersion composition for a color filter of a liquid crystal display device using an ultrasonic dispersion method according to an exemplary embodiment of the present invention is performed so that a predetermined particle size is obtained by using a predetermined amount of pigment dispersion composition raw material by ultrasonic energy. It is characterized by dispersing.

The pigment dispersion composition for the color filter liquid crystal display device used in the ultrasonic disperser according to an embodiment of the present invention for solving the above technical problem is 10 to 20% by weight of organic pigment, 3 to 10% by weight polymer dispersant having a pigment affinity group %, 0.01-1 weight% of pigment derivatives, and 70-80 weight% of solvents are included.

Specific details of other embodiments are described in the detailed description.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims.

The dispersing process of the pigment dispersion is primarily a polymer dispersant or pigment having a pigment affinity group such as an ester group, an acrylate group, a urethane group, etc., pulverizing the pigment particles to the primary particle size. The derivative is adsorbed on the surface of the pigment to impart a three-dimensional repulsive force between the pigments to maintain a constant distance between the pigments is made.

The dispersion system used in the present invention is a method of dispersing by using ultrasonic waves (ultrasonic) rather than a dispersion method using a medium such as glass beads or zirconium beads, and the pigment, the high molecular weight dispersant, the pigment derivative, and the solvent are mixed. When mechanical vibration is applied to the dispersed pigment dispersion through an ultrasonic generator, numerous bubbles of vacuum, called cavitation, are generated in the solution, which causes the aggregated pigment particles to be pulverized and dispersed by the breaking force. do.

Specifically, the ultrasonic disperser is divided into an oscillator and an oscillator. The high frequency energy generated by the oscillator is transmitted to the oscillator and converted into mechanical amplitude. When the energy is transferred to the pigment dispersion through the tip, the pigment dispersion is dispersed. A vacuum bubble is generated in the inside, and the pigment particle mass is pulverized by the breaking force of the vacuum bubble.

The advantage of the ultrasonic dispersion system is that the pigment particles are pulverized using the ultrasonic wave generated in the oscillator, so that the output of the oscillator can be controlled for various purposes regardless of the type of material to be dispersed. It is safe because there is little effect, and there is no contamination by the medium because it is dispersed by ultrasonic waves. In addition, by converting the output of the oscillator in various ways according to the use, it shows an excellent advantage in the part of improving the optical properties of the pigment dispersion by using in the pre-treatment, pre-process, post-treatment process.

The output of the ultrasonic disperser used in the ultrasonic dispersion method of the present invention is 50 ~ 5000 watts (W) is used, the frequency of 10 ~ 200kHz is used.

However, the ultrasonic dispersion method of the present invention may be used to grind and disperse the pigment dispersion raw material alone, but may also be used in the pre- or post-process of a dispersion method using a medium such as glass beads or zirconium beads. .

For example, in the case of use in the previous step of the dispersion method using a medium, the pigment dispersion raw material is dispersed using ultrasonic waves up to a certain size, and then used to distribute the fine and particle size distribution uniformly using the medium. It is possible to do

Pigment dispersion composition or pigment dispersion for liquid crystal display device color filter used in the ultrasonic disperser of the present invention is a pigment-friendly group such as 10 to 20% by weight of organic pigment, 3 to 10% by weight of ester group, acrylate group, urethane group, etc. It includes a polymer dispersant having a pigment derivative having a 0.01 to 1% by weight, a solvent having a 70 to 80% by weight.

The organic pigments that can be used in the present invention are different depending on the color, but basically, pigments having excellent transparency, light resistance, water resistance, chemical resistance, and heat resistance are used. For example, C.I. Pigment Red 9, 48, 97, 122, 123, 144, 149, 166, 168, 177, 179, 180, 192, 209, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240, 254, CI for green pigments Pigment Green 7, 10, 36, C.I. Pigment Blue 15, 15: 3, 15: 4, 15: 6, 22, 60, 64, C.I. Pigment Yellow 12, 13, 17, 20, 24, 83, 86, 93, 95, 109, 110, 117, 125, 129, 137, 138, 139, 147, 148, 150, 153, 154, 166, 168, 185, CI for purple pigments Pigment Violet 19, 23, 29, 30, 32, 37, 40, 50, C.I. Pigment Orange 13, 36, 38, 43, 51, 55, 59, 61, 64, 65, 71 and the like can be used, and preferably C.I. Pigment Red 177, 209, 254, C.I. Pigment Green 36, C.I. Pigment Blue 15: 6, C.I. Pigment Yellow 138, 139, 150, C.I. Pigment Violet 23, C.I. Pigment Orange 71 is used to produce pigment dispersions for color filter photosensitizers.

Polymeric dispersants used in the present invention are commercially available, for example, Solsperse 20000, 24000, 28000, 32000, 32500, 32600, 38500 from AVECIA (AVECIA Pigments Additives) in the UK, BYK (BYK-Chemie GmbH, Germany) Disperbyk-160, 161, 162, 163, 164, 166, 167, 169, 170, 171, 174, 2000, 2001, EFKA-4008, 4009, 4010, 4015, 4020 of the German EFKA Additives bv. , 4046, 4047, 4050, 4055, 4060, 4080, 4300, 4330, 4400, 4401, 4403, 4500, 4510, 4520, 4530, 4540, 4550, 4560, 4570, 4580, 4800.

These polymer dispersants are high molecular weight copolymers with pigment affinity groups. AVECIA's Solsperse dispersants have an ester group as a pigment affinity group and have an acid value and an amine value at the same time. The dispersant is a copolymer having an acrylate group, and EFKA-4000 Series of EFKA is a urethane-based copolymer, which is easy to disperse and has good color.

In order to activate the pigment affinity group of the high molecular weight dispersant to facilitate the combination of the pigment and the dispersant, a small amount of the pigment synergist is used, for example, Solsperse-12000, 22000, 5000 from Eveka, EFKA-6725 from EFKA, 6745 and so on. Pigment derivatives act as dispersion aids, and each has its own color. Therefore, the pigment derivatives may affect the color implementation inherent to the pigment dispersion, such as brightness and purity. In the present invention, the content of the dispersion aid is 0.01 to 5% by weight, preferably 0.01 to 1% by weight.

The solvent used in the present invention is propylene glycol methyl ether acetate (PGMEA: Propyleneglycol methylether acetate), cyclohexanone (Cyclohexanone), ethylene glycol acetate (EGA: Ethyleneglycol acetate), propylene glycol methyl ether (PGME: Propyleneglycol methylether), dipropylene glycol Methyl ether acetate (DPGMEA) and ethyl ethoxy propionate (EEP). These solvents may be used alone, but are mainly used in combination and should be selected in consideration of compatibility with high molecular weight dispersants, compatibility with color filter photosensitizers, cleanability, environmental friendliness, etc. In general, PGMEA and EEP are preferred. In the present invention, the content of the solvent in the pigment dispersion is 60 to 90% by weight, preferably 70 to 80% by weight.

Hereinafter, specific embodiments of the present invention will be described.

< Example  1>

70% by weight of PGMEA was placed in a stainless steel (SUS) container, and the contents were added at a low speed at room temperature using a rotary stirrer, and 5% by weight of Solsperse 32500 was added as a dispersant, followed by stirring at a low speed of 500 to 1000 rpm for 30 minutes. .

While stirring the mixture, 4 wt% of the dispersion aid Solsperse 5000 was added to the dispersion, followed by stirring at a low speed of 500 to 1000 rpm for 30 minutes. While stirring the mixture, C.I. Pigment Green 36 C.I. Pigment Yellow 150 was mixed and added to 15% by weight, and stirred at 700 to 1200 rpm for 12 hours.

After the stirring was completed, the tip of the vibrator causing the vibration was put into the mixture and dispersed in an amplitude of 30 ~ 40㎛ to prepare a green pigment dispersion composition.

In this example and the following examples, the average particle size was measured by a particle analyzer (PSA: Particle Size Analyzer, Otsuka Electronics Korea Co., ELS 8000), and the final viscosity was Brookfield Viscometer DV- at 25 ^° C. I +, BROOKFIELD Co., Ltd., and the average particle size and final viscosity of the prepared composition are shown in Table 1 below.

Minutes 0 10 20 30 Size (nm) 386.7 143.8 127.5 98.2 Final viscosity (25 ° C): 11.7 cPs

< Example  2>

C.I.Pigment 139 was used instead of C.I.Pigment Green 36 and C.I.Pigment Yellow 150, and the average particle size and viscosity of the prepared composition are shown in Table 2.

Minutes 0 10 20 30 Size (nm) 271.1 130.9 125.6 109.1 Final viscosity (25 ° C): 8.53 cPs

< Example  3>

C.I.Pigment Blue 15: 6 was used instead of C.I.Pigment Green 36 and C.I.Pigment Yellow 150 in the same manner as in Example 1, and the average particle size and viscosity of the prepared composition are shown in Table 3.

Minutes 0 10 20 30 Size (nm) 153.5 143.8 124.2 115.1 Final viscosity (25 ° C): 17.6 cPs

< Example  4>

70% by weight of PGMEA was placed in a stainless steel (SUS) container, and the contents were added at a low speed at room temperature using a rotary stirrer, and 5% by weight of Solsperse 32500 was added as a dispersant, followed by stirring at a low speed of 500 to 1000 rpm for 30 minutes. . While stirring the mixture, 4 wt% of the dispersion aid Solsperse 5000 was added to the dispersion, followed by stirring at a low speed of 500 to 1000 rpm for 30 minutes.

While stirring the mixture, C.I. Pigment Green 36 and C.I. Pigment Yellow 150 was mixed and added to 15% by weight, and stirred at 700 to 1200 rpm for 12 hours. After the stirring was completed, the tip of the vibrating portion causing the vibration in the mixture was dispersed for 30 minutes with an amplitude of 30 ~ 40㎛, put into a disperser filled with zirconium beads and dispersed for 3 hours to prepare a blue pigment dispersion composition.

Particle size and final viscosity according to the results are shown in Table 4.

Ultrasonic Method System using media Minutes 0 30 30 60 90 120 150 180 Size (nm) 150.8 120.5 108.2 89.7 74.5 70.1 68.9 66.6

Final viscosity (25 ° C): 11.68 cPs

< Example  5>

C.I.Pigment 139 was used instead of C.I.Pigment Green 36 and C.I.Pigment Yellow 150, and the average particle size and viscosity of the prepared composition are shown in Table 5.

< Example  6>

PGMEA was placed in a 70% by weight stainless steel (SUS) container, and the contents were added at 5 to 5% by weight of Solsperse 32500 as a dispersant while stirring the contents at low temperature using a rotary stirrer, followed by stirring at a low speed of 500 to 1000 rpm for 30 minutes.

While stirring the mixture, 4 wt% of the dispersion aid Solsperse 5000 was added to the dispersion, followed by stirring at a low speed of 500 to 1000 rpm for 30 minutes. While stirring the mixture, C.I. Pigment Yellow 139 was mixed with 15 wt% of the mixture and stirred at 700 to 1200 rpm for 12 hours.

After stirring is complete, the mixture is placed in a disperser filled with zirconium beads and dispersed for 3 hours. Then, a tip of a vibrating unit causing vibration is dispersed in the dispersed pigment composition, and then dispersed in an amplitude of 30 to 40 μm to prepare a yellow pigment dispersion composition. It was prepared, and the particle size and final viscosity for each time zone is shown in Table 6.

< Example  7>

The process was carried out in the same manner as in Example 6, but C.I.Pigment Red 254 was used instead of C.I.Pigment Yellow 139, and the average particle size and viscosity of the prepared composition are shown in Table 7.

Hereinafter, a specific experimental example will be described that the particle powder, storage stability, and viscosity are very excellent when the pigment dispersion composition for the color filter of the liquid crystal display device using the ultrasonic dispersion method according to the embodiments of the present invention is excellent. do. Details not described herein are omitted because they can be sufficiently inferred by those skilled in the art.

Each pigment dispersion composition prepared in Examples 1 to 7 was tested for physical properties by the following prescribed test method, and the results are shown in Table 8.

Physical property test method used in the present invention is as follows.

1. Particle Distribution Evaluation

After the 10,000-fold diluted pigment composition was placed in a particle analysis container, the average particle size and distribution were measured using a particle size analyzer, and evaluated according to the average particle size as follows.

◎: average particle size 60 ~ 80nm (excellent)

○: Average particle size 80-100 nm (good)

△: average particle size 100-120nm (normal)

X: average particle size 120 or more (bad)

2. Storage stability evaluation

After preparing the pigment dispersion composition, the viscosity was measured using a Brookfield viscometer at 25 ^o C, stored at 50 ^o C for 120 hours, and then the viscosity was measured again. Reagglomeration and change in viscosity of the pigment were measured by using, and classified according to particle size and viscosity change as follows.

◎: Within 5% of particle size and viscosity change (excellent)

○: Within 10% of particle size and viscosity change (good)

△: within 15% of particle size and viscosity change (usually)

X: Particle size and viscosity change 15% or more (defective)

3. Viscosity Evaluation

◎: Brookfield viscosity 8 cPs or less (excellent)

○: Brookfield viscosity 12 cPs or less (good)

Δ: Brookfield viscosity of 16 cPs or less (usually)

X: Brookfield viscosity 16 cPs or more (defective)

As shown in Table 8, the physical property evaluation results of the organic pigment dispersion according to the embodiments of the present invention, the physical properties were different depending on the type of organic pigment, red, blue, yellow pigments other than green pigments (good, Good).

In addition, it was confirmed that the physical properties were improved in all cases when used in the pre-treatment process, the whole process, and the post-treatment process using the ultrasonic dispersion system.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be manufactured in various forms, and a person of ordinary skill in the art to which the present invention pertains has the technical idea of the present invention. However, it will be understood that other specific forms may be practiced without changing the essential features. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

According to the method for preparing a pigment dispersion composition for a liquid crystal display device color filter using the ultrasonic dispersion method according to an embodiment of the present invention and the pigment dispersion composition for a liquid crystal display device color filter used in the ultrasonic disperser, one or more of the following effects are present. do.

First, since the pigment particles are pulverized and dispersed using ultrasonic waves, it is possible to use them in various applications regardless of the type of material to be dispersed by controlling the output of the oscillator.

Second, it is very safe because there is little effect of temperature or overload occurring during the process.

Third, there is no contamination by the medium because of the dispersion method by ultrasonic waves.

Fourth, by converting the output of the oscillator portion of the ultrasonic disperser in various ways to suit the purpose, it is possible to obtain excellent physical properties in particle size, particle distribution, and viscosity by using in the pre-treatment, the whole process, and the post-treatment process.

Claims (17)

10 to 100 nm of pigment dispersion composition raw material containing 10 to 20 wt% of organic pigment, 3 to 10 wt% of polymer dispersant having pigment affinity group, 0.01 to 1 wt% of pigment derivative, and 70 to 80 wt% of solvent. A method for producing a pigment dispersion composition for a color filter of a liquid crystal display using an ultrasonic dispersion method to disperse to have a particle size of. delete The method of claim 1, Output of the ultrasonic disperser used in the ultrasonic dispersion method is a method of producing a pigment dispersion composition for a liquid crystal display device color filter using the ultrasonic dispersion method, characterized in that 50 ~ 5000 watts (W). The method according to claim 1 or 3, A method of manufacturing a pigment dispersion composition for a color filter of a liquid crystal display device using the ultrasonic dispersion method, characterized in that the frequency of the ultrasonic dispersion machine used in the ultrasonic dispersion method is 10 ~ 200kHz. delete delete The method of claim 2, The organic pigment is C.I. Pigment Red 9, 48, 97, 122, 123, 144, 149, 166, 168, 177, 179, 180, 192, 209, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240, 254, CI Pigment Green 7, 10, 36, C.I. Pigment Blue 15, 15: 3, 15: 4, 15: 6, 22, 60, 64, C.I. Pigment Yellow 12, 13, 17, 20, 24, 83, 86, 93, 95, 109, 110, 117, 125, 129, 137, 138, 139, 147, 148, 150, 153, 154, 166, 168, 185, CI Pigment Violet 19, 23, 29, 30, 32, 37, 40, 50, C.I. Pigment Orange 13, 36, 38, 43, 51, 55, 59, 61, 64, 65, 71 method for producing a pigment dispersion composition for a color filter liquid crystal display device using the ultrasonic dispersion method, characterized in that selected from the group consisting of . The method of claim 2, The pigment-friendly group is an ester group, an acrylate group, a urethane group, characterized in that the pigment dispersion composition for a liquid crystal display device color filter using the ultrasonic dispersion method. The method of claim 2, Polymer dispersants having the pigment affinity group are Solsperse 20000, 24000, 28000, 32000, 32500, 32600, 38500, Disperbyk-160, 161, 162, 163, 164, 166, 167, 169, 170, 171, 174, 2000, 2001, EFKA-4008, 4009, 4010, 4015, 4020, 4046, 4047, 4050, 4055, 4060, 4080, 4300, 4330, 4400, 4401, 4403, 4500, 4510, 4520, 4530, 4540, 4550, 4560, 4570, 4580, 4800 The manufacturing method of the pigment dispersion composition for liquid crystal display device color filters using the ultrasonic dispersion method characterized in that it is selected from the group consisting of. The method of claim 2, The pigment derivative is Solsperse-12000, 22000, 5000, EFKA EFKA-6725, 6745, a method for producing a pigment dispersion composition for a color filter liquid crystal display device using an ultrasonic dispersion method, characterized in that selected from the group consisting of. The method of claim 2, The solvent is an ultrasonic wave, characterized in that selected from the group consisting of propylene glycol methyl ether acetate, cyclohexanone, ethylene glycol acetate, propylene glycol methyl ether, dipropylene glycol methyl ether acetate, ethyl ethoxy propionate and mixtures thereof. A method for producing a pigment dispersion composition for a color filter of a liquid crystal display device using a dispersion method. Pigment for liquid crystal display device color filter used in an ultrasonic disperser comprising 10 to 20% by weight of organic pigment, 3 to 10% by weight of polymer dispersant having a pigment affinity group, 0.01 to 1% by weight of pigment derivative, and 70 to 80% by weight of solvent. Dispersion composition. The method of claim 12, The organic pigment is C.I. Pigment Red 9, 48, 97, 122, 123, 144, 149, 166, 168, 177, 179, 180, 192, 209, 215, 216, 217, 220, 223, 224, 226, 227, 228, 240, 254, CI Pigment Green 7, 10, 36, C.I. Pigment Blue 15, 15: 3, 15: 4, 15: 6, 22, 60, 64, C.I. Pigment Yellow 12, 13, 17, 20, 24, 83, 86, 93, 95, 109, 110, 117, 125, 129, 137, 138, 139, 147, 148, 150, 153, 154, 166, 168, 185, CI Pigment Violet 19, 23, 29, 30, 32, 37, 40, 50, C.I. Pigment Orange Pigment dispersion composition for liquid crystal display device color filter used in the ultrasonic disperser, characterized in that selected from the group consisting of 13, 36, 38, 43, 51, 55, 59, 61, 64, 65, 71. The method of claim 12, The pigment affinity group is a pigment dispersion composition for the color filter of the liquid crystal display device used in the ultrasonic disperser, characterized in that the ester group, acrylate group, urethane group. The method of claim 12, Polymer dispersants having the pigment affinity group are Solsperse 20000, 24000, 28000, 32000, 32500, 32600, 38500, Disperbyk-160, 161, 162, 163, 164, 166, 167, 169, 170, 171, 174, 2000, 2001, EFKA-4008, 4009, 4010, 4015, 4020, 4046, 4047, 4050, 4055, 4060, 4080, 4300, 4330, 4400, 4401, 4403, 4500, 4510, 4520, 4530, 4540, 4550, 4560, Pigment dispersion composition for liquid crystal display device color filter used in the ultrasonic disperser, characterized in that selected from the group consisting of 4570, 4580, 4800. The method of claim 12, The pigment derivative is Solsperse-12000, 22000, 5000, EFKA EFKA-6725, 6745 pigment dispersion composition for a color filter used in an ultrasonic disperser, characterized in that selected from the group consisting of. The method of claim 12, The solvent is an ultrasonic wave, characterized in that selected from the group consisting of propylene glycol methyl ether acetate, cyclohexanone, ethylene glycol acetate, propylene glycol methyl ether, dipropylene glycol methyl ether acetate, ethyl ethoxy propionate and mixtures thereof. Pigment dispersion composition for liquid crystal display device color filters used for a disperser.