KR100425240B1 - Composition of barrier rib for flat panel display and a method for manufacturing barrier rib using the same - Google Patents

Abstract

In order to improve the high molding pressure generated when the squeegeeing method is used to manufacture the barrier ribs for flat panel display devices, the thermoplastic organic binder used is replaced with an epoxy resin, which is a thermosetting resin, and polyethylene glycol is added to increase moldability. In addition, by adding a dispersant to disperse inorganic matters and by using a room temperature stable curing accelerator to promote stable curing at room temperature, it is possible to mold under conditions with better fluidity than existing thermoplastic organic binders. Can be lowered.

Description

Composition of barrier rib for flat panel display and a method for manufacturing barrier rib using the same

[TECHNICAL FIELD OF THE INVENTION]

The present invention relates to a partition paste composition for a flat panel display device and a method for manufacturing a partition wall using the same, and more particularly, to manufacture a partition wall by heat-compressing a paste using a mold manufactured in a shape opposite to the partition wall for a flat panel display device. The method relates to the paste composition used in the method. The present invention also relates to a method of manufacturing a green ceramic tape using the paste composition and a method of manufacturing a partition for a flat panel display.

[Private Technology]

Generally, screen printing, sand blast, photosensitive paste, additive, or squeezing methods are used to form fine partition walls of plasma displays. .

In the above method, the composition of each partition paste is changed according to the method of composition of organic matter and inorganic matter, and the configuration and principle of forming the partition wall also vary. For example, in the photosensitive paste method, the reactive monomer added to the organic substance should be an electron beam curable resin.

In the squeegeeing method, a paste is formed on a substrate and dried, or a ceramic tape in which inorganic and organic materials, such as ceramics or glass particles are mixed, is manufactured and then joined on a substrate, the substrate is heated, and a mold is pressed to form a partition wall. When the mold is removed from the substrate on which the partition is formed, the substrate on which the partition is formed is cooled, and the substrate is baked at an appropriate firing temperature, the partition is formed. The method is described in detail in Korean Patent Application No. 1997-027537 of LG Electronics.

In the plasma display device of International Patent Application No. 98-49706 by Sarnoff Co., the partition forming method is described by the squeeging method. In this method, the material formed on the substrate is a green ceramic tape. The substrate used in the international patent application uses a metal substrate, and a method of manufacturing a green ceramic tape in which the thermal expansion coefficient of the substrate used and the green ceramic tape is identical is described. The manufacturing method is simpler than the conventional method, and since the partition wall is manufactured in a continuous batch process, it is possible to realize mass productivity improvement and low cost.

In addition, the conventional green ceramic tape was used as a low dielectric constant tape for printing electrodes, but the ceramic tape may be prepared first, and the tape may be placed on a metal or glass substrate and heated and compressed to manufacture a partition shape. The green ceramic tape used here is not only an excellent formability material for forming the partition shape, it is important to match the coefficient of thermal expansion between the metal substrate of the partition plate and the glass substrate of the front plate. In addition, printability is one of the important factors because the electrode is printed on the green ceramic tape.

On the other hand, the green ceramic tape, which is a partition paste, used in a method of manufacturing a partition of a plasma display panel according to the conventional squeegeeing method, has the following problems in molding.

First, the bulkhead paste is manufactured by heating and pressing in a dried state, and the inorganic content is contained in 85% or more of the organic matter, and the flowability at the molding temperature of the organic binder used is not easily formed in the mold. In the case of a 40-inch display under the pressurization condition, a high pressure of 130 Kg / cm ² or more is required, and thus pressure is not evenly transmitted to the entire 40-inch front, so that a partial pressure is generated. Therefore, the height of the bulkhead is not constant, partly in front of 40 inches. In addition, due to the high-pressure molding process, there is a limitation in using the back substrate as a glass substrate.

Second, the bulkhead should be molded at high temperature to soften the organic material and the bulkhead should be demoulded in the mold immediately after molding. Since the molding temperature is high, the mechanical properties of the bulkhead material are weak and the releasability of the bulkhead material is poor, so that the bulkhead material may be embedded in the mold. have. Therefore, there is a need to apply a mold release agent to a mold every time the mold is released.

Third, since the partition is formed and calcined by heating in that state, the shape of the partition may be collapsed before the organic binder, which is a thermoplastic resin, softens and melts during firing and the inorganic material is calcined.

In order to solve the above problems, the present invention can be formed at a low pressure of about 13 Kg / cm ² by renewing the composition of the organic material forming the partition wall, the mold release process is required by applying the mold release to the partition paste itself in the mold process. It is an object of the present invention to provide a partition paste composition for a flat panel display device which can use a very small amount of a release agent and can improve the mechanical properties which are weak when demolding at a high temperature and the retention of the shape during firing. The present invention also provides a method of manufacturing a green ceramic tape using the partition paste composition, a green ceramic tape according to the method, a method of manufacturing a partition panel for a flat panel display device using the partition paste composition, and a flat panel display device manufactured by the method. It is an object to provide a partition.

In order to achieve the above object, the present invention provides a flat panel display comprising (a) an inorganic material, (b) an organic binder, (c) a flexible polymer, (d) a dispersant, (e) a curing catalyst, and (f) a solvent. Provided is a partition paste composition for an apparatus.

In another aspect, the present invention (a) a slurry manufacturing process for preparing a slurry by mixing and mixing the partition wall paste composition for a flat panel display device, (b) coating the mixed slurry to remove bubbles and cast a constant thickness on the slurry carrier film Process and (c) provides a green ceramic tape manufacturing method comprising a drying step of drying the coated slurry.

The present invention also provides a green ceramic tape manufactured by the green ceramic tape manufacturing method.

In addition, the present invention provides a method for manufacturing a partition wall, using the partition paste composition for a flat panel display device, wherein the partition paste composition for a flat panel display device is used.

The present invention also provides a partition for a flat panel display manufactured by the method for manufacturing a partition for a flat panel display.

Hereinafter, the present invention will be described in detail.

In the paste composition for fabricating a plasma display panel partition wall of the present invention, the inorganic material must have a thermal expansion coefficient that matches a Ti plate, which is a metal substrate used as a back plate. Since the inorganic material is a material in which a partition is formed and finally remains, the lower the dielectric constant is, the better the thermal expansion rate must be matched with the glass substrate, which is the front panel, to minimize the stress of the panel during firing and to ensure the flatness of the panel after cooling. Can be. Therefore, in the inorganic composition, it is important to first match the thermal expansion rate of the back plate and the front plate to be matched, and to control it by the inorganic composition. In the present invention, an inorganic material well suited to the thermal expansion rate of the Ti substrate and the glass plate as the front plate was used. The composition of the inorganic material used in the present invention is 80 to 90% by weight of glass 1 and 5 to 15% by weight of glass 2. , TiO ₂ is 0.5 to 2% by weight, Cordierite (Cordierite) is 0.5 to 2% by weight and Forsterite (Forsterite) is preferably 0.5 to 2% by weight.

In the glass 1, the zinc magnesium borosilicate glass was melted at about 1,500 to 1,600 ° C for about 2 hours, and rapidly cooled to a glass powder composition.

ZnO 25 to 35%

MgO 20-30%

B ₂ O ₃ 15-25%

SiO ₂ 20-30%

In addition, the glass 2 is a magnesium aluminosilicate glass melted for about 1 hour at 1,700 to 1,800 ℃ and rapidly cooled to a glass powder composition is as follows.

Al ₂ O ₃ 14-20%

MgO 40-45%

P ₂ O ₅ 0.5 to 1.0%

B ₂ O ₃ 0.5 to 1.0%

SiO ₂ 35-45%

It is preferable that the said inorganic substance contains 40 to 95 weight% in the paste composition of this invention.

In addition, in the present invention, the paste composition uses an organic binder in order to fill the inorganic material into the partition mold, to maintain the partition shape so that it does not collapse during firing. The organic binder may be a thermosetting resin or a photocurable resin. The thermosetting resin is preferably selected from the group consisting of epoxy resins, unsaturated polyester resins, phenol resins, melamine resins, urethane resins, polysiloxane silicates, and mixtures thereof. Moreover, it is preferable to use what is chosen from the group which consists of a urethane acrylate, an epoxy acrylate, polyester acrylate, and a mixture thereof as said photocurable resin.

In addition, the organic binder used in the present invention should be dissolved in the solvent used in the present invention and it is preferable to use 2 to 30% by weight based on the total partition material composition. More preferably, it is preferable to use an epoxy resin, and even more preferably, an orcrecresol novolac resin is used among the epoxy resins.

In addition, the partition material composition of the present invention may further include a curing agent to promote the curing reaction of the materials used as the organic binder. The curing agent is preferably used in the ratio of an organic binder and an equivalent to equivalent, and more preferably a phenol novolac curing agent.

In addition, the partition material composition of the present invention includes a flexible polymer selected from the group consisting of polyethylene glycol, polypropylene glycol, polyethylene oxide, polypropylene oxide, and mixtures thereof. The flexible polymer may increase the flexibility of the barrier material and the tape to increase workability in actual production. More preferably, polyethylene glycol is used among the polymers. The flexible polymer has a hydroxyl group at both ends of the chain and contains oxygen in the middle of the chain, and has a hydroxyl group and a hydrogen bond of the epoxy resin, and has a compatibility in blending. With the desired flexibility, the flexible polymer acts as a plasticizer to help the fluidity of the inorganic material filled in the mold during the partition wall manufacturing. In addition, during the mold release, most of the other flexible polymers act as a release agent, except for the flexible polymers that participated in curing. Therefore, the conventional addition of a plasticizer and a release agent can be fully performed by the flexible polymer. The flexible polymer used in the present invention preferably has a number average molecular weight of about 300 to 10,000, and more preferably, a flexible polymer having a number average molecular weight of 1,000 to 1,500. The content of the flexible polymer in the above is preferably used 1 part by weight to 50 parts by weight based on 100 parts by weight of the thermosetting resin used in the present invention. In the case where the content of the flexible polymer is less than 1 part by weight, the improvement of flexibility is insignificant. When the content of the flexible polymer is greater than 50 parts by weight, there is no problem in manufacturing the barrier paste directly coated on the substrate, but it is difficult to peel from the film when manufacturing the green ceramic tape. The problem is that the physical properties are bad. It is preferable to use 20 to 25 parts by weight.

In addition, the paste composition of the present invention includes a dispersant, and the dispersant is adsorbed on the inorganic material to prevent the particles from reaggregating by maintaining a constant distance between the inorganic particles and the particles by electrical repulsive force or steric hindrance effect. The dispersant may be selected from the group consisting of fish oil, polyethylene glycol ether, alkyl sulfonate, polycarboxylate and alkyl ammonium salt. In the present invention, the content of the dispersant is preferably 0.1 to 5% by weight based on the total paste composition, more preferably 0.8 to 1% by weight of fish oil.

In addition, the partition paste composition of the present invention comprises a curing catalyst, the curing catalyst is preferably having a reactivity at the temperature to be molded, and should not be reactive during the temperature rise of the material during molding from room temperature to the molding temperature, the partition material is It should be able to give stability that does not cure at room temperature. Since the curing catalyst has a high molding temperature of 200 ° C. or higher, and metal ions in the curing catalyst may affect the final partition material, it is preferable to use an organic catalyst. In addition, the curing catalyst is an organic peroxide catalyst, ketone peroxide, diacyl peroxide, peroxide, peroxide ketal, peroxy ester, hard peroxide, peroxy carbonate, t-butyl peroxy-2-ethylhexanoate, A compound selected from the group consisting of bis (4-t-butylcyclohexyl) -peroxydicarbonate, dicumylperoxide and mixtures thereof, and 2-methyl as an azobisisobutyronitrile and imidazole catalyst as an azo compound Imidazole, 2ethyl-4-methylimidazole, 2-undecylimidazole, 2-phenylimidazole, 1-benzyl2methylimidazole, 1-cyanoethyl-2-methylimidazole 1-cyanoethyl-2-ethyl-4methylimidazole, 1-cyanoethyl-2-undecylimidazole, 1-cyanoethyl-2-undecylimidazole, and mixtures thereof Triphenylphosphine as an organic phosphine catalyst which is a compound selected from the group and a latent catalyst, Li-n-butylphosphine, tri-m-toylphosphine, tricyclohexylphosphine, tri-n-octylphosphine, tri-n-octylphosphine oxide, tetra-n-butylphosphonium bromide, 1 A compound selected from the group consisting of, 2-bis (diphenylphosphino) ethane and mixtures thereof can be used. The amount of the curing catalyst is preferably used 0.01 to 5% by weight of the total barrier paste composition, preferably 0.1 to 1.0% by weight of the organic phosphine-based catalyst which is a latent catalyst.

In addition, the solvent used in the present invention should be a solvent capable of dissolving a thermosetting resin, a plasticizer and polyethylene glycol, a releasing agent and a dispersing agent, and a material which is inexpensive, environmentally friendly, and preferably as toxic as possible for productivity. It is also highly volatile at room temperature and should be easily dried after casting the slurry. Solvents that can be used include methanol, ethanol, isopropyl alcohol, acetone, methethyl ketone, toluene, xylene, cyclohexanol, methylene chloride, 3-methoxybutyl acetate, ethylene glycol monoalkyl ethers, and ethylene glycol dialkyl ethers. , Diethylene glycol monoalkyl ethers and diethylene glycol monoalkyl ether acetates are preferable, and ethanol and methyl ethyl ketone are more preferable. The content of the solvent used in the present invention is preferably 2 to 30% by weight of the total paste composition. In addition, it is important to control the content of the solvent to the viscosity because the viscosity is important to the solvent to control the casting. If the viscosity of the slurry in which the partition paste composition is mixed and stirred is not appropriate, the density of the film casting coated with a constant thickness is different, which leads to phase separation of inorganic and organic materials. In more detail, when the viscosity is low, the inorganic material having a high density sinks down faster than the drying speed of the tape on which the slurry is cast, so that after the drying, the inorganic material and the organic material are rich in the thickness direction of the tape. In addition, if the dispersion of the inorganic material is not suitable, the separation occurs to the place rich in the inorganic material and the organic material in the rear direction of making the tape. This phenomenon affects the manufacturing process of the barrier ribs applied later, and the height is not constant due to the non-uniformity of the inorganic content even after the barrier ribs are manufactured. In the present invention, the viscosity of the slurry is controlled by the amount of the solvent, and preferably cast while maintaining the viscosity to 500 to 5,000 cps, more preferably maintain the 1,400 to 1,600 cps.

In addition, in the case of a barrier paste directly cast on a substrate, a high boiling point solvent may be used to increase the formability, and thus, the barrier material may be plasticized by allowing the solvent to remain during molding. The solvent used in the above method is preferably one selected from the group consisting of N-methylpyrrolidinone, dimethyl formumamide and methacresol, more preferably N-methylpyrrolidinone. The amount of the high boiling point solvent is preferably 0.1 to 10% by weight of the total partition material composition, more preferably 0.8 to 1.5% by weight. The above method is suitable only for the production of partition paste, because in the case of green ceramic tape, peeling from the mylar film which is the carrier film is difficult.

In addition, the polyethylene glycol used in the present invention does not require a plasticizer and a release agent by performing the role of a plasticizer and a release agent, but a plasticizer and a release agent may be used to further increase moldability. Plasticizers and release agents that may be used in the present invention are dibutyl phthalate, dicyclohexyl phthalate, butylbenzyl phthalate (BBP), triphenyl phosphate, tricresyl phosphate, 2-ethylhexyl diphenyl phosphate compatible with epoxy resins, Tributoxyethyl phosphate, N-ethyl (o, p) -toluenesulfonamide, (o, p) -toluenesulfonamide and chlorinate paraffin, using a material selected from the group consisting of total barrier material composition It is preferred to add 0.1 to 10% by weight relative to the. More preferably, 0.8 to 1.5 wt% of butalbenzylphthalate is used.

The partition paste composition for a flat panel display device according to the present invention may be generally used for all of the flat panel display partition walls, but may be particularly used for the manufacture of partitions for plasma display panels.

In another aspect, the present invention provides a green ceramic tape manufacturing method using the partition material composition, the green ceramic tape manufacturing method is (a) a slurry manufacturing process for producing a slurry by mixing and mixing the partition material composition, (b) The process of manufacturing a green ceramic tape comprising a coating process of removing bubbles and casting the slurry to a predetermined thickness on a slurry carrier film, and (c) a drying process of drying the coated slurry.

In the slurry manufacturing process, the composition, which is properly mixed in the composition ratio, is put in a ball mill and mixed for 3 to 5 hours. At this time, the ball used is preferably a zirconium ball of about 1 cm in diameter, fill the initial slurry volume to perform a ball mill.

In the coating process, the slurry is added to the slurry in which the ball mill is performed, or the solvent is volatilized to adjust the viscosity. The viscosity is preferably 500 to 5,000 cps, more preferably 1,400 to 1,600 cps is preferably maintained. Moreover, the bubble of the slurry which matched the said viscosity is removed. It is preferable that the bubble is removed by a decompression device. In addition, the bubble-free slurry is coated on a slurry carrier film to a constant thickness. In the above, the coating is preferably performed by a tape casting device for uniform coating. In the above, the thickness of the coating can be adjusted using a doctor blade according to the use of the required partition wall, in the present invention is preferably 190 to 210 ㎛ bar, more preferably 200 ㎛ uniform. In addition, it is preferable that the slurry carrier film uses a mylar film having excellent releasability having a silicon coating treatment on the surface thereof.

In addition, the drying process in the green ceramic tape manufacturing method may be a drying method generally used for drying the green ceramic tape, preferably the drying method is heat drying, more preferably the heat drying temperature is 60 It is more than 100 degreeC.

In addition, the present invention provides a method for manufacturing a partition wall for a flat panel display device. In the method for manufacturing a partition wall for a flat panel display device, a partition wall paste is generally manufactured by manufacturing a green ceramic tape using the partition wall paste composition or coating the partition wall paste composition directly on a substrate. After manufacturing, the partition wall is manufactured through a molding process and a firing process.

The method for manufacturing a partition wall for a flat panel display device according to the present invention is characterized by using the partition material composition for the flat panel display device.

In addition, in the method of manufacturing a partition wall for a flat panel display device of the present invention, in order to mold the partition wall, it is preferable to perform the molding at a temperature higher than the temperature at which the organic material is softened and has a flow. In the case of the present invention, 50 ° C to 150 ° C is preferable, and more preferably molding at 105 to 115 ° C. Barrier manufacturing method according to the present invention includes an improved partition paste composition and a curing catalyst, the molding pressure at the time of molding is possible to 13 Kg / cm ² or less, the molding pressure when using a conventional partition wall paste or green ceramic tape Compared to about 130 Kg / cm ² , this can lead to a reduction in production equipment and a significant reduction in production costs.

In addition, the process of firing the formed partition wall may be a conventional firing method, preferably, the carbon content remaining during firing is preferably less than 5%, more preferably less than 3%. This is because when the residual carbon content is 5% or more, the dielectric constant of the manufactured partition wall is lowered.

In addition, the method for manufacturing a partition for a flat panel display device according to the present invention can be used to manufacture a partition for a general flat panel display device, but may be particularly used for manufacturing a partition for a plasma display panel.

The present invention also provides a partition for a flat panel display manufactured by the method for manufacturing a partition for a flat panel display.

Hereinafter, examples of the present invention will be described. The following examples illustrate the invention and do not limit the invention.

Example 1

In order to coat the dispersant with minerals, 1.0 g of fish oil, 83.76 g of inorganic matter, and 30 g of methyl ethyl ketone were placed in a ball mill, and a ball mill was filled for about 2 hours after filling the same volume of zirconium balls having a diameter of about 1 cm. . In addition, 11.76 g of an epoxy resin (trade name N680) was dissolved in 20 g of methyl ethyl ketone, and 3.31 g of polyethylene glycol having a number average molecular weight of 1000 and 0.15 g of 2-methylimidazole, a curing catalyst, were dissolved in a solution in which the epoxy resin was dissolved. . The dissolved solution was poured back into a ball mill and the ball mill was again performed for about 3 hours. After the milling is finished, after the de-airing process for adjusting the viscosity of the slurry and removing bubbles, the slurry is poured into a tape casting apparatus, and the dried ceramic tape is coated using a doctor blade to have a constant thickness of 200 μm. Was dried to prepare a green ceramic tape. In addition, the prepared green ceramic tape was peeled off from the mylar film, and then placed on a titanium substrate to be used as a back plate. At this time, the surface of the titanium substrate on which the green ceramic tape was placed was previously coated with an epoxy adhesive. In addition, after the electrode was printed, a black pigment using ethyl cellulose as a binder was screen-printed on the electrode-coated ceramic tape to protect the electrode and adjust the contrast ratio of the final product. Titanium substrate in which the ceramic tape through the above process is matched has a pressure of about 13 Kg / cm ² with the substrate placed between the upper and lower presses where the temperature of the lower press is maintained at 110 ° C. and the upper mold surface is also maintained at 110 ° C. After pressurizing for 2 minutes, the mold was demolded. The molded substrate was subjected to firing at about 500 ° C., and then the height of the rib was measured. The entire surface of the substrate was evenly maintained at a height of 183 μm.

Example 2

In order to coat the dispersant with inorganic particles, 1.0 g of fish oil, 83.76 g of inorganic matter, and 30 g of methyl ethyl ketone were placed in a ball mill, and a ball mill was performed for about 2 hours after filling the same volume of zirconium balls having a diameter of about 1 cm. . Further, 14.92 g of an epoxy resin (trade name N680) was first dissolved in 20 g of methyl ethyl ketone, and 0.15 g of polyethylene glycol number average molecular weight 300 and 0.15 g of 2-methylimidazole were dissolved in a solution in which the epoxy resin was dissolved. The dissolved solution was poured back into a ball mill and the ball mill was again performed for about 3 hours. After the milling is finished, the slurry is subjected to a de-airing process to adjust the viscosity of the slurry and to remove bubbles. Then, the slurry is poured into a tape casting apparatus, and the doctor blade is directly placed on the titanium substrate so that the thickness of the dried ceramic tape is 200 μm. Coating by using The coated slurry was dried to place a barrier paste coated substrate on the back plate. Next, the electrode is printed and the substrate is placed between the upper and lower parts of the press where the temperature of the press is maintained at 110 ° C. and the upper mold surface is also maintained at 110 ° C. and pressurized for 2 minutes at a pressure of about 76 Kg / cm ² . Deformed. The molded substrate was subjected to a sintering process at about 500 ° C., and then the height of the lip was measured. The entire surface of the substrate was evenly maintained at a height of 185 μm.

Example 3

Table 1 shows the change in molding pressure and lip height as a result of the same method as in Example 1, but using a small amount of N-methylpyrrolidinone, a high boiling point solvent, to prepare a green ceramic tape. .

[Examples 4 to 13]

The green ceramic tape was manufactured in the same manner as in Example 1, and the molding pressure and lip height were varied according to the type and content of polyethylene glycol and the type and content of catalyst. The results according to the molding temperature and the molding pressure are shown in Table 1 and Table 2.

[Examples 14 to 16]

The green ceramic tape was manufactured in the same manner as in Example 1, and the molding pressure and the lip height were different according to the content ratio of the inorganic and organic materials. Table 3 shows the results of molding the ratio of the total content of inorganic and organic materials in a ratio of 95% by weight to 5% by weight, 90% by weight to 10% by weight, and 80% by weight to 20% by weight.

Comparative Example 1

2.65 g of polyvinyl butyral (B-79), 1.77 g of benzyl butyl phthalate and 0.86 g of fish oil are dissolved in a solvent containing 12.15 g of methyl ethyl ketone and 12.15 g of ethanol, and 70.42 g of mineral is placed in a ball mill. After filling the same volume of zirconium balls of 1 cm ball milling was performed for about 3 hours. After the milling, the slurry was subjected to a de-airing process to adjust the viscosity of the slurry and to remove bubbles. Then, the slurry was poured into a tape casting apparatus and coated using a doctor blade such that the thickness of the dried ceramic tape became a constant thickness of 200 μm. . The coated slurry was dried to produce a green ceramic tape. Since the green ceramic tape was peeled off from the mylar film, it was placed on a titanium substrate to be used as a back plate, followed by a lamination process of adhering the substrate and the green ceramic tape, and then printed on the electrode. At this time, the surface of the titanium substrate on which the green ceramic tape is placed was coated with an adhesive prepared by polyvinyl butyral. The substrate where the ceramic tape is matched and the electrode is printed on the substrate is placed between the upper and lower parts of the press in which the temperature of the lower press is maintained at 110 ° C. and the mold surface of the upper part is also maintained at 110 ° C., at a pressure of about 130 Kg / cm ² . After pressure was applied for a minute, the mold was demolded. The molded substrate was subjected to a calcination process at about 500 ° C., and then the height of the lip was measured. As a result, uneven pressure occurred, the entire surface was uneven, but the average height was maintained at 180 μm. The results are shown in Table 3.

[Comparative Examples 2 to 4]

The green ceramic tape was manufactured in the same manner as in Comparative Example 1, and the lip height, the partial pressure, the lip uniformity, and the occurrence of tearing were examined while varying the molding pressure and molding temperature, and the results are shown in Table 3.

TABLE 1

Example Composition type One 2 3 4 5 6 7 Mineral 83.76 83.76 83.76 83.76 83.76 83.51 83.26 N680 11.76 14.92 11.76 13.57 10.55 11.72 11.69 PEG 300 3.33 0.17 3.31 1.52 4.54 3.32 3.30 PVB - - 1.02 - - - - BBP - - - - - - - 2-MZ 0.15 0.15 0.15 0.15 0.15 0.45 0.75 Fish oil 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Molding temperature (℃) 110 110 110 110 110 110 110 Molding time 2 minutes 2 minutes 2 minutes 2 minutes 2 minutes 1 minute 30 seconds Molding pressure (Kg / ㎠) 13 76 13 56 10 13 13 Bias none Some none none none none none Tearing none none Some none Some none none Average lip height after firing (㎛) 183 185 185 180 190 184 187 Lip height uniformity Good Good Good Good Good Good Good

TABLE 2

Example Composition type 8 9 10 11 12 13 Mineral 83.76 83.76 83.76 83.76 83.76 83.76 N680 11.76 11.76 11.76 11.76 11.76 11.76 N695 - - - - - - PEG 300 - - - - - - PEG 1000 3.33 - - 3.33 3.33 3.33 PEG 2000 - 3.33 2.33 - - - PVB - - - - - - BBP - 1.00 - - - 2-MZ 0.15 0.15 0.15 - 0.15 0.15 TPPK - - - 0.15 - - Fish oil 1.00 1.00 1.00 1.00 1.00 1.00 Molding temperature (℃ 110 110 110 200 80 130 Molding time 2 minutes 2 minutes 2 minutes 5 minutes 4 minutes 1 minute Molding pressure (Kg / ㎠) 13 13 13 10 56 10 Bias none none none none none none Tearing none none none none none none Average lip height after firing (㎛) 180 170 193 184 187 190 Lip height uniformity Good Good Good Good Good Good

TABLE 3

Example Comparative example Composition type 13 14 15 One 2 3 4 Mineral 95.0 90.0 80.0 93.02 93.02 93.02 93.02 N680 3.82 7.65 17.35 - - - - PEG 300 1.07 2.16 1.50 - - - - PVB - - - 3.50 3.50 3.50 3.50 BBP - - - 2.34 2.34 2.34 2.34 2-MZ 0.047 0.1 0.15 - - - - Fish oil 0.063 0.09 1.00 1.14 1.14 1.14 1.14 Molding temperature (℃) 110 110 110 110 130 110 110 Molding time 2 minutes 2 minutes 2 minutes 2 minutes 2 minutes 2 minutes 2 minutes Molding pressure (Kg / ㎠) 13 13 13 130 130 76 200 Bias none Medicine none plenty has exist Less plenty Tearing none none Some Some has exist none has exist Average lip height after firing (㎛) 140 155 185 180 185 147 180 Lip height uniformity Good Good Good Bad Bad Bad Bad

N680: Osocresol novolac epoxy resin with a softening point of 80 to 90 ° C. A phenol novolac curing agent is contained in the equivalent weight equivalent to the osocresol novolac epoxy resin.

-N695: orthocresol novolac epoxy resin with a softening point of 90 to 100 ° C, and a phenol novolak curing agent contained in an equivalent weight equivalent to that of the orthocresol novolac epoxy resin

-PEG 300: one of polyethylene glycol, number average molecular weight is 300

-PEG 1000: one of polyethylene glycol, number average molecular weight 1000

-PEG 2000: one of polyethylene glycol, number average molecular weight 2000

-BBP: one of butylbenzylphthalate

2-MZ: 2-methylimidazole

-TPPK: Tetraphenylphosphonium tetraphenylborate

NMP: N-methylpyrrolidinone

In Table 1, Table 2 and Table 3, the occurrence of the bias means that the lip height is not uniform over the entire surface, and the tearing occurs when the mechanical strength of the lip when demolding is insufficient or the release property is insufficient.

As shown in Tables 1 to 3, the barrier ribs for the flat panel display devices of Examples 1 to 16 have a molding pressure of 10 to 76 Kg / cm ^2, which is remarkably higher than that of 130 Kg / cm ² as compared to the barrier ribs of Comparative Examples 1 to 4. Molding was possible at low pressure, unevenness and tearing were reduced, and uniformity of lip height after firing was good.

According to the present invention, by inventing an organic material which reduces the molding pressure to one tenth of the existing squeegeeing method in the plasma display bulkhead manufacturing method, the compression apparatus is simplified due to the reduction in the molding pressure during the partition wall forming. In addition, the uniformity of the molding area may be increased, thereby reducing the process for planarizing the partition wall later. In addition, it is possible to prevent deformation of the bulkhead to collapse during firing by improving the mechanical properties, which are vulnerable when demolding at high temperatures, and the retention of the shape during firing by curing the organic material.

Claims (24)

(Twice correction) (a) an inorganic binder, (b) an organic binder of a thermosetting resin or a photocurable resin, (c) a flexible polymer selected from the group consisting of polyethylene glycol, polypropylene glycol, polyethylene oxide, polypropylene oxide and mixtures thereof, (d) dispersants and (e) a curing catalyst and (e) a solvent. The method of claim 1, wherein the inorganic material is 80 to 90% by weight of glass 1, 5 to 15% by weight of glass 2, 0.5 to 2% by weight of TiO ₂ , 0.5 to 2% by weight of cordierite and 0.5 to Fosterite. 2 to 2% by weight and 40 to 95% by weight of the bulkhead paste composition for the flat panel display. (delete) The barrier rib paste composition of claim 1, wherein the organic binder comprises 2 to 30 wt% of the barrier rib paste composition of the entire flat panel display. (correction) The partition paste composition of claim 1, wherein the thermosetting resin is selected from the group consisting of epoxy resins, unsaturated polyester resins, phenol resins, melamine resins, urethane resins, polysiloxane silicates, and mixtures thereof. . (correction) The partition paste composition of claim 1, wherein the photocurable resin is selected from the group consisting of epoxy acrylate, urethane acrylate, polyester acrylate, and mixtures thereof. 6. The partition paste composition of claim 5, wherein the epoxy resin is an orthocresol novolak resin. (delete) The method of claim 8, wherein the polyethylene glycol has a number average molecular weight of 1,000 to 1,500, the content of the polyethylene glycol is 1 part by weight to 50 parts by weight based on 100 parts by weight of the thermosetting resin contained in the partition paste composition for flat panel display devices. A partition paste composition for a flat panel display device, characterized in that. According to claim 1, wherein the dispersant is selected from the group consisting of fish oil, polyethylene glycol ether, alkyl sulfonate, polycarboxylate and alkyl ammonium salt, and comprises 0.1 to 5% by weight of the bulkhead paste composition for a flat panel display A partition paste composition for a flat panel display, characterized in that the. The method of claim 1, wherein the curing catalyst is ketone peroxide, diacyl peroxide, peroxide, peroxide ketal, peroxy ester, hard peroxide, peroxy carbonate, t-butyl peroxy-2-ethyl hexanoate, Bis (4-t-butylcyclohexyl) -peroxydicarbonate, dicumylperoxide, azobisisobutyronitrile, 2-methylimidazole, 2ethyl-4-methylimidazole, 2-undecylimidazole , 2-phenylimidazole, 1-benzyl-2-methylimidazole, 1-cyanoethyl-2-methylimidazole, 1-cyanoethyl-2-ethyl-4methylimidazole, 1- Cyanoethyl-2-undecylimidazole and 1-cyanoethyl-2-undecylimidazole, triphenylphosphine, tri-n-butylphosphine, tri-m-toylphosphine, tricyclohexyl Selected from the group consisting of phosphine, tri-n-octylphosphine, tri-n-octylphosphine oxide, tetra-n-butylphosphonium bromide, and 1,2-bis (diphenylphosphino) ethane Said flat panel display device, the barrier rib paste composition characterized in that it comprises 0.01 to 5% by weight of the amount of the curing catalyst to be used for the entire flat panel display of the barrier rib paste composition. The method of claim 1, wherein the solvent is methanol, ethanol, isopropyl alcohol, acetone, methethyl ketone, toluene, xylene, cyclohexanol, methylene chloride, 3-methoxybutyl acetate, ethylene glycol monoalkyl ethers, ethylene glycol A dialkyl ether, a diethylene glycol monoalkyl ether, a diethylene glycol monoalkyl ether acetate, and a flat panel display device comprising 2 to 30% by weight of the bulkhead paste composition for all flat panel display devices. Bulkhead paste composition for use. The partition paste composition of claim 1, wherein the partition paste composition for the flat panel display further comprises buttal benzyl phthalate. The partition paste composition of claim 1, wherein the partition paste composition for a flat panel display is a partition paste composition for a plasma display panel. (correction) (a) a slurry manufacturing step of preparing a slurry by mixing and milling the partition paste composition for flat panel display according to claim 1; (b) coating the mixed viscosity 500 to 5,000 cps slurry to remove bubbles and cast the slurry on the slurry carrier film to a constant thickness; And (c) a drying process of drying the coated slurry Green ceramic tape manufacturing method comprising a. (delete) The method of manufacturing a green ceramic tape according to claim 15, wherein the drying step uses heat drying at a drying temperature of 60 ° C. or more and less than 100 ° C. 16. delete A method of manufacturing a flat panel display partition wall using the flat panel display partition film composition, wherein the partition wall paste composition for flat panel display device is used. 20. The method of claim 19, wherein the molding pressure is 13 Kg / cm ² or less in the molding process. 20. The method of claim 19, wherein the barrier ribs having a calcination process have a carbon content of less than 5%. 20. The partition wall panel of claim 19, wherein the partition paste composition for a flat panel display further comprises a high boiling point solvent selected from the group consisting of N-methylpyrrolidinone, dimethylformamide, and methacresol. Manufacturing method. 20. The method of claim 19, wherein the method of manufacturing the partition wall of the flat panel display device is a method of manufacturing a plasma display panel partition wall. delete