KR20060080404A - Photosensitive paste composition for forming barrier rib, a pdp barrier rib prepared therefrom, and a pdp comprising the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photosensitive paste composition for partition formation, and more particularly, to a partition formation photosensitive paste including a barrier rib powder, a photosensitive vehicle, and a cyclic acid anhydride. A composition, a partition of a plasma display panel manufactured using the composition, and a plasma display panel including the partition. According to the present invention, it is possible to provide a photosensitive paste composition for forming a barrier rib excellent in storage stability by fundamentally preventing gelation of the photosensitive paste composition for forming a barrier rib.

Photosensitive Paste Composition, PDP

Description

Photosensitive paste composition for forming barrier ribs, PDP barrier ribs prepared using the same, and PDPD comprising the same, a PDP barrier rib prepared therefrom, and a PDP comprising the same}

1 is a partial cutaway perspective view illustrating a PDP including a partition wall manufactured according to the present invention.

<Description of the symbols for the main parts of the drawings>

110: front panel 111: front substrate

112: Y electrode 113: X electrode

114: sustain electrode pair 115: front dielectric layer

116: protective film 120: rear panel

121: back substrate 122: address electrode

123: rear dielectric layer 124: partition wall

125: phosphor layer 126: light emitting cell

The present invention relates to a photosensitive paste composition for forming a partition, a partition of a plasma display panel manufactured using the same, and a plasma display panel including the same, and more particularly, a barrier rib powder and a photosensitive vehicle. And a photosensitive paste composition for forming a partition including cyclic acid anhydride, a partition of a plasma display panel manufactured using the same, and a plasma display panel including the same.

In the manufacture of plasma display panels (PDPs), barrier ribs are structures formed on the bottom plate (or back plate), which secure electric discharge space and electrically and optical crosstalk between adjacent cells. prevents talk) The barrier ribs vary depending on the PDP type, but have a stripe shape having an upper width of 60 to 100 μm, a lower width of 100 to 160 μm, and a height of 100 to 150 μm at intervals of 150 to 300 μm.

The partition wall may be formed by forming an address electrode and a dielectric thereon on a PDP lower plate, and then using a screen printing method, a sand blast method, a photolithography method, or the like.

Screen printing method uses a patterned mask to print a bulkhead paste on a substrate using a squeeze and dry to remove the solvent, and then repeat the printing and drying several times to form a dried film of the desired thickness The partition film is obtained through a calcination process. However, a problem with this method is that it is difficult to form a uniform pattern of partition walls due to process time, low resolution, and misalignment caused by repeated printing.                         

In the sand blasting method, the barrier paste is printed at one time using a table coater or the like and dried to form a film having a desired thickness, and then laminating a dry film resist (DFR) having a sanding resistance. After patterning through exposure and development process, the DFR pattern is used as a mask to spray the high-pressure fine abrasive in the sanding process to pattern the partition, remove the remaining DFR, and then complete the partition by firing. . The sand blasting method has the advantage of forming a partition having a higher resolution than the screen printing method, but has a disadvantage in that the process is complicated and the electrode terminal part is damaged by the impact of the abrasive.

Photolithography is performed by printing and drying the photosensitive paste for forming a partition to form a film having a desired thickness, and then exposing using an ultraviolet exposure apparatus equipped with a photomask, and then repeating the printing, drying and exposure processes several times. In the developing step, the non-exposed part is selectively removed, and then the partition wall is manufactured through the firing step. Such photolithography can obtain high resolution bulkheads compared to screen printing, and it does not go through DFR and sanding processes compared to sandblasting, but there are many times of processing and problems due to misalignment during repeated processes. There are drawbacks to this.

In order to solve the above problems, US Pat. No. 6,197,480 discloses a method of minimizing the difference in refractive index between inorganic and organic matters, and Korean Patent Application No. 2004-0012298 uses a method of surface treatment of inorganics with fumed silica to improve exposure sensitivity. It is disclosed to form a partition through one exposure process.

The recent tendency of the photosensitive paste used to form the partition walls by the photolithography method is that the tendency to use water or alkaline aqueous solution as a developer rather than an organic solvent in consideration of environmental problems is increasing. The organic binder which is one of the components uses the copolymer containing acidic functional groups, such as a carboxyl group. However, in the case of using a copolymer including such a carboxyl group as an organic binder, gelation proceeds while forming a three-dimensional network by ion crosslinking by combining an inorganic binder, which is a paste main component, with a carboxyl group of the copolymer. There is a problem. Such a gelling phenomenon of the paste causes the viscosity to rise so that printing is impossible, and even if printing occurs, the development becomes impossible.

Several methods have been proposed in the past as a method for preventing the gelation of such paste. For example, a method of surface treatment of an inorganic binder with a triazole compound disclosed in US Pat. No. 6,576,391, a method by the steric hindrance structure of the copolymer disclosed in US Pat. No. 6,326,125, and the like. However, although these methods can delay the gelation of the paste, there is a limitation that this gelation reaction cannot be fundamentally prevented.

Accordingly, the present invention provides a photosensitive paste composition for forming barrier ribs having excellent storage stability by fundamentally preventing gelation of the photosensitive paste composition for barrier rib formation, and also provides a PDP barrier rib manufactured using the same, and a PDP including the barrier rib. I would like to.

One embodiment of the present invention to achieve the above technical problem,

Provided are a photosensitive paste composition for forming a partition including a partition powder, a photosensitive vehicle, and a cyclic acid anhydride.

Another embodiment of the present invention to achieve the above other technical problem,

There is provided a photosensitive green sheet for forming a partition comprising a partition powder, a photosensitive vehicle, and a cyclic acid anhydride.

Another embodiment of the present invention to achieve the above other technical problem,

The present invention provides a partition of a plasma display panel manufactured using the photosensitive paste composition for forming a partition or the photosensitive green sheet for forming a partition.

Another embodiment of the present invention to achieve the above other technical problem,

The present invention also provides a plasma display panel including the PDP partition wall.

According to the present invention, gelation of the photosensitive paste composition for forming partitions is essentially prevented, thereby providing a photosensitive paste composition for forming partitions having excellent storage stability.

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

The photosensitive paste composition for forming a partition according to the present invention includes a partition powder, a photosensitive vehicle, and a cyclic acid anhydride. According to the present invention, it is possible to remarkably improve the storage stability of the composition by adding cyclic acid anhydride to the photosensitive paste composition commonly used in the production of PDP partition walls. This is because the cyclic acid anhydride acts in several forms as follows to prevent the partition wall from adhering to the carboxyl group of the copolymer to prevent gelation. That is, i) the hydroxyl group (-OH) on the surface of the partition powder formed by the reaction between the inorganic binder and water is bonded to the cyclic acid anhydride, or ii) the cation component in the inorganic binder is the cyclic acid. Or iii) the dicarboxylic group formed by the reaction of the cyclic acid anhydride with water in the paste, or an inorganic binder, or iv) the cyclic acid anhydride is bonded to the carboxyl group present in the copolymer in the photosensitive vehicle. This can prevent gelation.

The cyclic acid anhydride may be added and used when preparing the paste composition, or may be used by surface-treating the partition powder with the cyclic acid anhydride. The surface treatment method dissolves 0.1 to 10 parts by weight of a cyclic acid anhydride corresponding to 100 parts by weight of the bulkhead powder to be surface-treated in a highly volatile solvent such as acetone, methanol, ethanol, ethyl acetate, and methylene chloride. The mixture is stirred for about 24 hours, naturally dried at room temperature or dried using an evaporator to remove the solvent, and vacuum-dried at 60 to 90 ° C. for 10 hours or more to prepare.

The difference between the method of adding the cyclic acid anhydride to the paste and the method of surface-treating the cyclic acid anhydride on the bulkhead powder is simple and convenient, while in the tens of hours until the paste viscosity is stabilized. While it requires several days, the surface treatment method is somewhat inconvenient, but has the advantage that the viscosity of the paste remains stable from the beginning.                     

In the present invention, the above effects can be obtained by using a cyclic acid anhydride having affinity with the vehicle and being easily soluble in the vehicle, but not impairing the dispersibility of the partition powder.

Cyclic acid anhydrides satisfying the above conditions include, but are not limited to, succinic anhydride, methyl succinic anhydride, 2,2-dimethylsuccinic anhydride, 1,2-cyclohexanedicarboxylic anhydride, hexahydro- 4-methylphthalic anhydride, glutaric anhydride, 3-methyl glutaric anhydride, 2,2-dimethyl glutaric anhydride, 3,3-dimethyl glutaric anhydride, 3,3-tetramethylene glutaric anhydride Aliphatic compounds such as phenylsuccinic anhydride, 2-phenylglutaric anhydride, phthalic anhydride, 4-methylphthalic anhydride, 3-hydroxyphthalic anhydride, 1,2,4-benzenetricarboxylic anhydride, and benzenetetra At least one selected from the group consisting of aromatic compounds such as carboxylic acid dianhydride and the like.

It is preferable that content of the said cyclic acid anhydride is 0.1-5.0 weight part with respect to 100 weight part of partition wall powder. If the content of the cyclic acid anhydride is less than the above range, there is a problem in that the storage stability of the paste is difficult to be secured, and if it exceeds the above range, there is a problem of poor developability, which is not preferable.

The composition according to the invention also comprises a partition powder and a photosensitive vehicle, each of which is preferably 20 to 100 parts by weight of the photosensitive vehicle based on 100 parts by weight of the partition powder.

As the partition powder, a component of glass powder may be used alone, but at present, alumina and / or titanium oxide may be added to the glass powder to improve the brightness by increasing the reflectance by making the partition opaque. Added ones are used. Components of the glass powder include, but are not limited to, PbO-SiO ₂ based, PbO-SiO ₂ -B ₂ O ₃ based, PbO-SiO ₂ -B ₂ O ₃ -ZnO based, PbO-SiO ₂ -B ₂ O ₃ -BaO system, PbO-SiO ₂ -ZnO-BaO system, ZnO-SiO ₂ system, ZnO-B ₂ O ₃ -SiO ₂ system, ZnO-K ₂ OB ₂ O ₃ -SiO ₂ -BaO system, Bi ₂ O ₃ -SiO ₂ system, Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ system, and Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ -BaO system, and Bi ₂ O ₃ -B ₂ O ₃ -SiO _2- It is selected from the group consisting of BaO-ZnO system. In addition, these glass powders can be used individually or in mixture of 2 or more types.

Although the particle shape of the said glass powder is not specifically limited, It is preferable that it is spherical because spherical particle | grains have a characteristic superior to plate form or amorphous in a filling rate and an ultraviolet transmittance. The average particle size of the glass powder is 2 to 5 μm, the minimum particle size (D _min ) is 0.5 μm, and the maximum particle size (D _max ) is 10 micrometers is suitable. If the average particle size is less than 2 μm or the minimum particle size (D _min ) is less than 0.5 μm, the reduction in exposure sensitivity and the shrinkage rate during firing are so large that a desired partition wall shape cannot be obtained. _{If the max} ) exceeds 10 μm, the denseness of the barrier rib and the straightness of the barrier rib are deteriorated. The softening temperature of the glass powder is preferably 400 to 600 ° C. If the softening temperature is less than 400 ℃ can not obtain a partition of the desired shape during firing, if the softening temperature exceeds 600 ℃ softening does not occur properly. The thermal expansion coefficient of the glass powder is closer to the thermal expansion coefficient of the substrate on which the partition wall is formed. If the difference in coefficient of thermal expansion between the glass powder and the substrate becomes large, the substrate may bend or even break in severe cases.

The content of the partition powder is suitable for 40 to 80 parts by weight based on 100 parts by weight of the photosensitive paste. If the content is less than 40 parts by weight, the partition wall may not be obtained. If the content exceeds 80 parts by weight, the partition may be formed due to insufficient exposure sensitivity. none.

The composition according to the invention also comprises a photosensitive vehicle, the content of the photosensitive vehicle is preferably 20 to 100 parts by weight based on 100 parts by weight of the partition powder. If the content of the photosensitive vehicle is less than 20 parts by weight, it is not preferable because the printability of the paste and the exposure sensitivity are lowered. If the content of the photosensitive vehicle exceeds 100 parts by weight, the content ratio of the partition wall powder is relatively low, and the shrinkage during the firing is severe. It is not preferable because it is difficult to get up and form a partition of a desired shape.

The photosensitive vehicle includes an organic binder, a crosslinking agent, a photoinitiator, a solvent, and other additives.

When using alkaline aqueous solution as a developing solution in the image development process, the organic binder uses what contains an acidic group. Various kinds of polymers may be used as the organic binder, and an acrylic resin is most suitable in terms of price characteristics. In order to have an acidic group in acrylic resin, the monomer which has a carboxyl group can be used, Therefore, the copolymer of the monomer which has a carboxyl group with another 1 or more monomer can be used as an organic binder which concerns on this invention. The monomer having a carboxyl group is not limited thereto, but at least one selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, vinyl acetic acid, and anhydrides thereof, and another monomer copolymerized with a monomer having such a carboxyl group is Methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, 2-hydroxy ethyl acrylate, Preference is given to at least one selected from the group consisting of 2-hydroxy ethyl methacrylate, ethylene glycol monomethyl ether acrylate, ethylene glycol monomethyl ether methacrylate, styrene, and p-hydroxy styrene.

As the organic binder, a carboxyl group of the copolymer may be reacted with an ethylenically unsaturated compound, and as a result, a component to which a crosslinking reaction is added in the binder may be used. The ethylenically unsaturated compound may be one selected from the group consisting of glycidyl methacrylate, 3,4-epoxycyclohexylmethyl methacrylate, and 3,4-epoxycyclohexylmethyl acrylate.

Furthermore, although the copolymer may be used alone as an organic binder, methyl cellulose, ethyl cellulose, nitro cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose for the purpose of improving film leveling and thixotropic properties, etc. It may be used by mixing one or more substances selected from the group consisting of, carboxymethyl cellulose, carboxyethyl cellulose, and carboxyethyl methyl cellulose.

It is preferable that the molecular weight of the said copolymer is 5,000-100,000 g / mol, and it is preferable that acid value is 20-150 mgKOH / g. If the copolymer has a molecular weight of less than 5,000 g / mol, the printability of the paste is inferior, and if it exceeds 100,000 g / mol, there is a problem that the non-exposed part cannot be removed during development. In addition, when the acid value of the copolymer is less than 20 mgKOH / g, developability is inferior, when it exceeds 150 mgKOH / g, there is a problem that is developed to the exposed portion is not preferred.

The content of the organic binder is determined by the content of the partition wall powder to be added, the addition of a thickener, and the content thereof. The organic binder is preferably 10 to 50 parts by weight based on 100 parts by weight of the photosensitive vehicle. When the content of the organic binder is less than the above range, there is a problem such as a decrease in viscosity and printability, which is not preferable, and the developability defect and shrinkage rate of which the content exceeds the above range becomes severe, which is not preferable because the desired partition wall shape cannot be obtained.

As the crosslinking agent, monofunctional and polyfunctional monomers can be used. Generally, a polyfunctional monomer having good exposure sensitivity is used. Such polyfunctional monomers include, but are not limited to, diacrylates such as ethylene glycol diacrylate (EGDA); Triacrylates such as trimethylolpropane triacrylate (TMPTA), trimethylolpropaneethoxylate triacrylate (TMPEOTA), or pentaerythritol triacrylate (PETA); Tetraacrylates such as tetramethylolpropane tetraacrylate or pentaerythritol tetraacrylate; One or more selected from the group consisting of hexaacrylates such as dipentaerythritol hexaacrylate (DPHA) can be used. The content of the crosslinking agent is preferably 50 to 200 parts by weight with respect to 100 parts by weight of the copolymer binder. When the content of the crosslinking agent is less than 50 parts by weight, the exposure sensitivity is poor to obtain a patterned partition wall, which exceeds 200 parts by weight. In this case, the shrinkage ratio is so high that the desired partition wall shape cannot be obtained, which is not preferable.

Examples of the photoinitiator include, but are not limited to, benzophenone, methyl o-benzoylbenzoate, 4,4-bis (dimethylamine) benzophenone, 4,4-bis (diethylamino) benzophenone, 2,2-die Methoxyacetophenone, 2,2-dimethoxy-2-phenyl-2-phenylacetophenone, 2-methyl- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl- 2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, bis (2,6-dimethoxybenzoyl) -2,4,4-trimethylpentylphosphineoxide, and bis (2,4 One or more selected from the group consisting of, 6-trimethylbenzoyl) phenylphosphine oxide can be used. The content of the photoinitiator is preferably 20 to 130 parts by weight with respect to 100 parts by weight of the copolymer binder. When the content of the photoinitiator is less than 20 parts by weight, the exposure sensitivity of the paste is low, so that a barrier line width of a desired size cannot be obtained. If it exceeds the weight part, it is not preferable because there exists a problem that a partition line width is large or it does not develop.

As the solvent, a binder and a photoinitiator may be dissolved, and a boiling point of 150 ° C. or more may be used while being well mixed with a crosslinking agent and other additives. If the boiling point is less than 150 ° C, the tendency of volatilization in the manufacturing process of the composition, in particular, the three-roll mill process is a large problem, and is also undesirable because the solvent volatilizes too quickly during printing, resulting in poor printing. Preferred solvents capable of satisfying the above conditions include, but are not limited to, ethyl carbitol, butyl carbitol, ethyl carbitol acetate, butyl carbitol acetate, texanol, terpin oil, dipropylene glycol methyl ether, dipropylene One or more selected from the group consisting of glycol ethyl ether, dipropylene glycol monomethyl ether acetate, γ-butyrolactone, cellosolve acetate, butyl cellosolve acetate, and tripropylene glycol may be used. The content of the solvent is preferably 50 to 400 parts by weight with respect to 100 parts by weight of the organic binder, but if the content of the solvent is less than 50 parts by weight, the viscosity of the paste is too high, it is not preferable to print properly, 400 weight If the amount is exceeded, the viscosity is so low that printing cannot be performed, which is not preferable.

In addition, the photosensitive vehicle includes a sensitizer to improve sensitivity, a polymerization inhibitor and an antioxidant to improve the preservation of the composition, an ultraviolet light absorber to improve the resolution, an antifoaming agent to reduce bubbles in the composition, a dispersant to improve dispersibility, printing It may further include additives such as leveling agents to improve flatness of the film and plasticizers to impart thixotropic properties.

Another embodiment of the present invention provides a PDP partition wall manufactured using the photosensitive paste composition for partition wall formation described above. The partition wall is manufactured through a process of forming a fine pattern and a process of firing.

Formation process of the fine pattern, the photosensitive paste composition for forming the partition wall formed as described above is printed on the lower substrate formed with the address electrode and the dielectric layer using a table coater or the like, 80 to 80 in a convection oven or IR oven Drying at a temperature of 150 ° C. for 5 to 30 minutes, and then exposing the pattern to form a pattern with light of 300 to 450 nm using an ultraviolet light source on the formed paste coating film, and again printing the photosensitive paste for forming partition walls and The process up to exposure is repeated and then developed at a temperature of about 30 ° C. with a suitable alkaline developer such as Na ₂ CO ₃ solution, KOH, TMAH, etc. to remove unexposed sites. In addition, the firing process is performed by firing the fine pattern formed as described above in an electric furnace or the like at 500 to 600 ° C. for 10 to 30 minutes.

In the case of using the photosensitive green sheet for forming the barrier rib instead of the photosensitive paste composition for forming the barrier rib in the process of forming the fine pattern, a fine pattern is obtained by performing the same method except for coating by using a laminator instead of a table coater during printing, and then undergoing a firing process. What is necessary is just to form a partition. The photosensitive green sheet manufacturing method for forming the partition wall It is manufactured by the following method using the photosensitive paste for formation.

A) printing a photosensitive paste for forming a partition by using a coater on a support film;

B) The paste is dried using a drying apparatus to form a photosensitive layer.

C) Laminate the protective film on the photosensitive layer.

Another embodiment of the present invention provides a PDP including the PDP partition wall manufactured as described above.

The PDP manufactured according to the present invention has a structure including a front panel 110 and a rear panel 120. The front panel 110 includes a front substrate 111, sustain electrode pairs 114 including a Y electrode 112 and an X electrode 113 formed on the rear surface 111a of the front substrate, and the sustain electrode pair. And a protective film 116 covering the front dielectric layer. Each of the Y electrode 112 and the X electrode 113 includes: transparent electrodes 112b and 113b formed of ITO or the like; Bus electrodes 112a and 113a constituted by black electrodes (not shown) for improving contrast and white electrodes (not shown) to impart conductivity are provided. The bus electrodes 112a and 113a are connected to connection cables 31 disposed on the left and right sides of the PDP.

The rear panel 120 includes a rear substrate 121, address electrodes 122 formed on the front surface 121a of the rear substrate to intersect the storage electrode pairs, a rear dielectric layer 123 covering the address electrodes, and the rear dielectric layer. A partition wall 124 formed on and partitioning the light emitting cells 126, and a phosphor layer 125 disposed in the light emitting cell. The address electrodes 122 are connected to connection cables disposed above and below the PDP.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the scope of the present invention is not limited to the following Examples.

Example

Example 1 Preparation of Photosensitive Paste Composition for Formation of Partition

As cyclic acid anhydride, 1.0 wt% of 1,2-cyclohexanedicarboxylic anhydride, inorganic powder (average particle size = 3.5 μm, D _max = 8.2 μm, amorphous, PbO-SiO ₂ -B ₂ O ₃ system + Alumina) 70.0 wt%, Binder 1 (poly (MMA-co-MAA) copolymer, molecular weight 25,000 g / mol, acid value 110 mgKOH / g) 6.0 wt%, binder 2 (hydroxypropyl cellulose, average molecular weight (Mw) = 100,000 g / mol) 0.5 wt%, photoinitiator 1 (2-methyl-1- [4- (methylthio) phenyl] -2-morpholinopropan-1-one) 2.0 wt%, photoinitiator 2 (2,4-di Ethyl thioxanthone) 0.5 wt%, crosslinker 1 (trimethylolpropane ethoxylate triacrylate) 4.0 wt%, crosslinker 2 (ethylene glycol diacrylate) 2.0 wt%, solvent (texanol) 14.0 wt% The paste was blended, stirred with a stirrer, and kneaded using a 3-roll mill to prepare a photosensitive partition wall paste composition according to the present invention. In the production of the composition, a photosensitive vehicle component was first blended to prepare a vehicle, and then partition powder was added.

Example 2 Preparation of Photosensitive Paste Composition for Formation of Partition

For forming the partition wall according to the present invention according to the same method as in Example 1, except that the partition wall powder in Example 1 was surface-treated using 1,2-cyclohexanedicarboxylic anhydride which is a cyclic acid anhydride A photosensitive paste composition was prepared.

The surface treatment method was performed as follows. 1.0 g of 1,2-cyclohexanedicarboxylic anhydride was dissolved in 10 g of methylene chloride solvent, and then 70 g of the partition wall powder of Example 1 was added and stirred at room temperature for 24 hours. Then, the solvent was removed using an evaporator and prepared by vacuum drying at 70 ° C. for 12 hours.

Example 3 Preparation of Photosensitive Paste Composition for Formation of Partition

Except for using phthalic anhydride as the cyclic acid anhydride, a photosensitive paste composition for forming a partition according to the present invention was prepared according to the same method as in Example 1.

Example 4 Preparation of Photosensitive Paste Composition for Formation of Partition

A photosensitive paste composition for forming a partition according to the present invention was prepared in the same manner as in Example 1 except that benzenetetracarboxylic acid dianhydride was used as the cyclic acid anhydride.

Comparative example. Preparation of Photosensitive Paste Composition for Formation of Bulkhead

As a comparative example, without adding a cyclic acid anhydride, 1.0 wt% of a solvent was further added to form a partition wall. A photosensitive paste composition was prepared.

The content ratio of each component in the compositions of Examples 1 to 4 and Comparative Examples is summarized in Table 1 below.

ingredient Example 1 Example 2 Example 3 Example 4 Comparative example Bulkhead powder 70.0 70.0 70.0 70.0 70.0 Organic Binders 1 6.0 6.0 6.0 6.0 6.0 Organic Binders 2 0.5 0.5 0.5 0.5 0.5 Photoinitiator 1 2.0 2.0 2.0 2.0 2.0 Photoinitiator 2 0.5 0.5 0.5 0.5 0.5 Crosslinking agent 1 4.0 4.0 4.0 4.0 4.0 Crosslinking agent 2 2.0 2.0 2.0 2.0 2.0 menstruum 14.0 14.0 14.0 14.0 15.0 1,2-cyclohexanedicarboxylic acid anhydride 1.0 1.0 (coating) - - - Phthalic anhydride - - 1.0 - - Benzene Tetracarboxylic Anhydride - - - 1.0 -

(Unit: weight%)

Performance test

Evaluation of the storage stability of the compositions of Examples 1 to 4 and Comparative Examples was carried out through accelerated experiments. 12 hours, 1 day, 3 days, 5 days, 10 days in the combined paste composition was measured at a shear rate of 20 / s by using a viscometer at the time of 12 hours, 1 day, 3 days, 5 days, 10 days, the results are shown in Table 2 Indicated.

term Example 1 Example 2 Example 3 Example 4 Comparative example  Early 14,500 13,000 15,300 16,100 12,000  12 hours later 14,200 13,500 14,700 15,500 85,000  1 day after 13,700 13,300 14,200 15,100 182,000  3 days later 13,500 13,300 14,200 14,900 Gelation  After 5 days 13,600 13,500 14,400 14,900 -  10 days after 13,400 13,600 14,300 15,000 -

(Unit: viscosity (cps))

As can be seen from the results of Table 2, the compositions according to the present invention to which the cyclic acid anhydride is added as a storage stabilizer have excellent storage stability even in an accelerated experiment, but do not include the cyclic acid anhydride. The composition showed a result of poor storage stability with increasing viscosity of the paste as time passed after preparing the paste composition. Comparing Examples 1 and 2, it can be seen that, in Example 2 having a surface treatment, the initial viscosity was kept stable, whereas in Example 1 where cyclic acid anhydride was added, it required time to stabilize.

According to the present invention, it is possible to provide a photosensitive paste composition for forming a partition having excellent storage stability by adding cyclic acid anhydride to essentially prevent gelation of the photosensitive paste composition.

Claims (13)

A photosensitive paste composition for forming a partition, comprising a partition powder, a photosensitive vehicle, and a cyclic acid anhydride. The cyclic acid anhydride according to claim 1, wherein the cyclic acid anhydride is succinic anhydride, methyl succinic anhydride, 2,2-dimethylsuccinic anhydride, 1,2-cyclohexanedicarboxylic anhydride, hexahydro-4-methylphthalic anhydride, glutaric acid Acid anhydride, 3-methylglutaric anhydride, 2,2-dimethylglutaric anhydride, 3,3-dimethylglutaric anhydride, 3,3-tetramethylene glutaric anhydride, phenylsuccinic anhydride, 2-phenylglu At least one selected from the group consisting of tartaric anhydride, phthalic anhydride, 4-methylphthalic anhydride, 3-hydroxyphthalic anhydride, 1,2,4-benzenetricarboxylic acid anhydride, and benzenetetracarboxylic acid anhydride The photosensitive paste composition for forming a partition. The photosensitive paste composition of claim 1, further comprising 20 to 100 parts by weight of the photosensitive vehicle and 0.1 to 10 parts by weight of the cyclic acid anhydride based on 100 parts by weight of the partition powder. According to claim 1, wherein the partition powder has a softening temperature of 400 to 600 ℃, the average particle diameter of 2.0 to 5.0 ㎛ PbO-SiO ₂ system, PbO-SiO ₂ -B ₂ O ₃ system, PbO-SiO ₂ -B ₂ O ₃ -ZnO-based, PbO- SiO ₂ -B ₂ O ₃ -BaO-based, PbO-SiO ₂ -ZnO-BaO-based, ZnO-SiO ₂ -based, ZnO-B ₂ O ₃ -SiO ₂ -based, ZnO-K ₂ OB ₂ O ₃ -SiO ₂ -BaO system, Bi ₂ O ₃ -SiO ₂ system, Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ system, Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ -BaO system And Bi ₂ O ₃ -B ₂ O ₃ -SiO ₂ -BaO-ZnO-based photosensitive paste composition for forming a partition comprising at least one glass component selected from the group consisting of alumina and / or titanium oxide. The photosensitive vehicle of claim 1, wherein the photosensitive vehicle comprises a copolymer of a monomer having a carboxyl group with one or more ethylenically unsaturated monomers, a crosslinking agent, a photoinitiator, and a solvent, wherein the monomer having a carboxyl group and one or more ethylenic monomers are included. 50 to 200 parts by weight of a crosslinking agent, 20 to 130 parts by weight of a photoinitiator, and 50 to 400 parts by weight of a solvent based on 100 parts by weight of a copolymer with a photosensitive paste composition for forming a partition. The method of claim 5, wherein the monomer having a carboxyl group is at least one selected from the group consisting of acrylic acid, methacrylic acid, fumaric acid, maleic acid, vinyl acetic acid, and anhydrides thereof; The ethylenically unsaturated monomers are methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, n-butyl acrylate, n-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, 2- At least one selected from the group consisting of hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, ethylene glycol monomethyl ether acrylate, and ethylene glycol monomethyl ether methacrylate; The crosslinking agent is at least one selected from the group consisting of diacrylates, triacrylates, tetraacrylates, and hexaacrylates; The photoinitiator, benzophenone, methyl o-benzoylbenzoate, 4,4-bis (dimethylamine) benzophenone, 4,4-bis (diethylamino) benzophenone, 2,2-diethoxyacetophenone, 2,2- Dimethoxy-2-phenyl-2-phenylacetophenone, 2-methyl- [4- (methylthio) phenyl] -2-morpholinopropan-1-one, 2-benzyl-2-dimethylamino-1- ( 4-morpholinophenyl) -1-butanone, bis (2,6-dimethoxybenzoyl) -2,4,4-trimethylpentylphosphineoxide, and bis (2,4,6-trimethylbenzoyl) phenylforce At least one selected from the group consisting of fin oxides; The solvent is ethyl carbitol, butyl carbitol, ethyl carbitol acetate, butyl carbitol acetate, texanol, terpin oil, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol monomethyl ether acetate, γ-buty It is one or more selected from the group consisting of a rock lactone, a cellosolve acetate, a butyl cellosolve acetate, and a tripropylene glycol, The photosensitive paste composition for partition formation. The method of claim 5, wherein the copolymer is selected from the group consisting of a carboxyl group of the copolymer, glycidyl methacrylate, 3,4-epoxycyclohexylmethyl methacrylate, and 3,4-epoxycyclohexylmethyl acrylate. A photosensitive paste composition for forming a partition, comprising a crosslinkable group formed by reaction with a selected ethylenically unsaturated compound. The photosensitive paste composition of claim 5, wherein the copolymer has a molecular weight of 5,000 to 100,000 g / mol and an acid value of 20 to 150 mgKOH / g. 6. The group of claim 5 wherein the photosensitive vehicle consists of methylcellulose, ethylcellulose, nitrocellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, carboxymethylcellulose, carboxyethylcellulose, and carboxyethylmethylcellulose. The photosensitive paste composition of claim 1, further comprising at least one material selected from the group consisting of at least one material selected from the group. The barrier of claim 5, wherein the photosensitive vehicle further comprises at least one additive selected from the group consisting of a sensitizer, a polymerization inhibitor, an antioxidant, an ultraviolet light absorber, an antifoaming agent, a dispersing agent, a leveling agent, and a plasticizer. Photosensitive paste composition for formation. The photosensitive green sheet comprised from the support film, the photosensitive layer, and the protective film which were manufactured using the said photosensitive paste composition for partition formation of any one of Claims 1-10. The PDP partition wall manufactured using the photosensitive paste composition for partition wall formation of any one of Claims 1-10. PDP comprising a PDP partition wall according to claim 12.

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