KR100298236B1 - Pattern formation method in PDTV production - Google Patents

Abstract

[purpose]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for shortening a work process for forming a pattern such as electrode formation, barrier rib formation, and phosphor coating for PDP, which are essential for the production of plasma display panel (PDP) televisions.

[Configuration]

In the production of PDP televisions, the process of forming various patterns such as PDP electrode formation, barrier rib formation, and phosphor coating is performed by depositing a metal film → pattern formation by nozzle → etching → strip or It is intended to provide a method of forming a pattern by shortening the pattern directly to firing.

[effect]

In manufacturing PDP televisions, by forming patterns by forming nozzles for forming PDP electrodes, forming partition walls, and applying phosphors by spraying nozzles, work processes are shortened, thereby reducing costs such as expensive equipment reduction, time, materials, and maintenance costs. There is an economic effect.

Description

Pattern formation method in manufacture of PDTV.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming various patterns essential for the manufacture of plasma display panel (PDP) televisions. In particular, in manufacturing PDP televisions, patterns such as electrode formation, barrier rib formation, and phosphor coating for PDP televisions may be used. The present invention relates to a method of forming a pattern by a nozzle in the production of PDP television for shortening the work process to be formed, thereby reducing costs such as expensive equipment reduction, time saving, material saving, and maintenance cost.

Conventionally, a pattern such as PDP electrode formation, barrier rib formation, and phosphor coating required for PDP television manufacturing must be formed.

① Metal Film Deposition> Deposit a metal film on glass or substrate.

② Apply PR (photo resist)〉 Apply photo resist.

③ Prebaking> Prebaked the coated photoresist.

④ Exposure> Exposure is performed through the light according to the required pattern.

⑤ Develop> Develop the part exposed by light.

⑥ Etching> Etching is performed to remove the metal film of the part exposed by light.

⑦ Strip> The pattern is formed by stripping the photosensitive liquid layer of the part which is not transmitted to the light on the glass or the substrate.

And the work of forming the partition wall has been carried out in various ways, but as a method widely used in the prior art, the partition wall formation method by sandblasting is as follows.

① Applying partition wall paste> Apply partition wall material with electrode formed.

② DFR Reliner> Reinforce the dry film on the bulkhead.

③ Exposure> Perform close or close exposure to ultraviolet rays.

④ Development> Remove the pattern exposed by ultraviolet rays.

⑤ Sandblasting> Remove the exposed part of the bulkhead by using ceramic fine sand.

⑥ DFR Peeling> Remove dry film.

In addition, there is a method of forming a pattern of phosphors by a printing method and an exposure method, but the method of exposure is described below as a conventional technique.

① RED printing〉 Print RED on the entire surface of the lower plate where partition wall is formed and apply phosphor.

② Drying> Dry the RED phosphor to be in close contact with the bulkhead.

③ Exposure> UV exposure using a mask to leave RED phosphor.

④ Phenomenon〉 When developing phosphor, only the RED part remains and the rest is removed.

⑤ Green printing〉 Green phosphor is printed on the front of the lower plate with red phosphor formed.

⑥ Drying〉 Dry the green phosphor to make close contact with the partition wall.

⑦ Exposure> UV exposure using a mask to leave green phosphor.

⑧ Phenomenon> Developing the phosphor leaves only the green part and removes the rest.

⑨ Blue〉 Blue and phosphors are printed on the front of the lower plate with red and green phosphors formed.

⑩ Drying> Dry Blue phosphor to adhere to bulkhead.

Exposure> UV exposure is performed using a mask to leave blue phosphors.

⑫ Phenomenon〉 When developing phosphor, only blue part remains and the rest is removed.

⑬ Firing> Fire in a state where all red, green, and blue phosphors are patterned.

The PDP electrode is formed by such a work process sequence, and not only the formation of the PDP electrode but also the formation of the partition wall and the phosphor coating are performed by the above process, and of course, each process includes a cleaning process. The work process is too many, expensive equipment according to this, and a lot of cost, such as time, materials, maintenance costs.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and shortens the work process of forming various patterns such as PDP electrode formation, barrier rib formation, and phosphor coating, which are essential for PDP television manufacturing. It is to reduce the overall costs.

In order to achieve the above object, during the process of forming various patterns such as PDP electrode formation, barrier rib formation, and phosphor coating, which are essential for PDP television production, for example, metal film deposition ⇒ by nozzle It is to provide a method for shortening and forming in the order of pattern formation ⇒ etching ⇒ strip.

Hereinafter, the present invention will be described in detail by way of examples.

Corrosion resistance to etching solution like polyurethane in the process of metal film deposition, pattern formation by nozzle, etching, strip, etc. Using this strong and viscous material, the chemical solution is agitated at a constant rate to make it into a GELL state, and then put into a sealed container and supplied to several nozzles while maintaining a constant temperature to maintain the characteristics of the viscous fluid. The pattern by the nozzle which discharges to an adsorbed board | substrate is formed.

The solvent has to be corrosion resistant to the etching solution, and a solvent having a viscous force should be used as a representative example, polyurethane was recommended.

When the solvent and the solution are stirred, the mixture is carefully stirred to prevent bubbles and fine particles from being formed, and then the air in the container is discharged in the process of supplying to the container and sealed to prevent contact with the atmosphere. It is injected into a container and is isolated from air.

The discharge port shape of the nozzle is made of a circle, oval, square, trapezoidal, triangular according to the shape of the pattern required.

In addition, the working process of the partition wall formation and the phosphor formation of the above process is as follows.

Bulkhead formation

① Apply partition wall paste> Apply partition wall with electrode formed.

② Pattern by nozzle> Use a nozzle to pattern viscous solution that can withstand sand blast.

③ Drying〉 Dry the viscous solution to endure sandblasting process.

④ Sandblasting> Remove the exposed part of the bulkhead by using ceramic fine particles.

⑤ Peeling> Remove dried viscous body.

When applied to the partition wall formation as described above it is possible to integrate the exposure and field processes.

Phosphor formation

① Phosphor Patterns of Red, Green, and Blue> The phosphors are patterned by following the bulkhead using the Step and Scanning method using a nozzle head capable of discharging three phosphors simultaneously.

② Drying> Dry the phosphor.

③ Firing> Firing the phosphor.

As described above, in the conventional method, three phosphors may be patterned through 13 processes, but the phosphors may be patterned by integrating three processes according to the present invention.

According to the present invention as described above an operation process for forming an electrode for PDP in the production of PDP television as follows.

First process (metal film deposition)

A metal film is deposited on a glass-like substrate.

2nd process (pattern formation by nozzle)

After adsorbing the substrate obtained in the first step on the stage, the viscous material is stirred at a constant ratio with a solvent to make a GELL state, and then put in a sealed container on the stage while maintaining a constant temperature to maintain the characteristic of the viscous fluid. A pump is installed between the installed vessel and the nozzles to supply the same pressure to each nozzle.

The viscous fluid supplied to the nozzle at the same pressure is discharged onto the substrate while passing through the nozzle.

At this time, it is controlled so that the viscous fluid is not broken while passing through the nozzle.

The substrate is placed under the nozzle, and the stage adsorbing the substrate has a mileage larger than the substrate size, and has a structure of an alignment mask recognition device and a stage that can control alignment so that the patterns can be aligned in consideration of overlapping patterns.

In addition, when the substrate area is large, it has a stage with the structure of STEP AND SCANNING.

The viscous fluid exposed through the nozzle is brought into close contact with the surface of the substrate by a stage in which the substrate fixed to the stage travels at a constant speed, thereby forming a shape of a desired pattern on the substrate.

At this time, the discharge port shape of the nozzle should be selected according to the desired pattern and the above operation process is made in one step.

3rd process (etching)

The metal film of the part except the shape of the pattern formed by the solution is removed from the board | substrate obtained by the 2nd process.

4th process (strip = strip)

When the solution is sprayed from the substrate obtained in the third step to remove the solution of the coated portion, a pattern is formed by the metal film.

Such a work process can form a conventional PDP electrode, and in addition to applying a partition or phosphor, the above-described method can be used. ② Application of PR (photo resist) ⇒ ③ Prebaking ⇒ ④ Exposure ⇒ ⑤ Phenomenon ⇒ ⑥ Etching ⇒ ⑦ Applying PR (photo resist) ⇒ ③ Prebaking ⇒ ④ Exposure ⑤ ⑤ The development process is shortened to one pattern forming process by nozzle.

As in the present invention described above, the process of applying the solution to the etching operation of removing the metal film is performed by the nozzle, and it is within the scope of the present invention to form a pattern by spraying the nozzle.

Therefore, in manufacturing the PDP television as described above, by forming a pattern by the nozzle, the formation of the electrode for PDP, the formation of the partition wall, the application of the phosphor, etc., the work process is shortened, and the expensive equipment reduction, time, material, There are economic features to reduce costs such as maintenance costs.

Claims (7)

In the production of PDP televisions, the process of forming a pattern is performed by deposition of a metal film → pattern formation by nozzle → etching → stripping or direct pattern → firing. The method of forming a pattern in manufacture. The pattern forming process of claim 1, wherein the pattern forming process by the nozzle is made by stirring a chemical solution to a material having a viscous force at a constant ratio to make a GELL state, and then maintaining a constant temperature in order to maintain a characteristic of the viscous fluid by putting it in a sealed container. A method of forming a pattern in a PDP television manufacturing method comprising the steps of: supplying to a plurality of nozzles and discharging them onto a substrate adsorbed on a stage at the same pressure. The pattern formation method according to claim 1 or 2, wherein the discharge port shape of the nozzle is formed in a circular shape. The pattern formation method according to claim 1 or 2, wherein the discharge port shape of the nozzle is formed in an elliptical shape. The pattern formation method according to claim 1 or 2, wherein the discharge port shape of the nozzle is formed in a rectangle. The pattern formation method according to claim 1 or 2, wherein the discharge port shape of the nozzle is formed in a triangle. The pattern formation method according to claim 1 or 2, wherein the discharge port shape of the nozzle is formed in a trapezoidal shape.