KR20060039322A - Manufacturing method of plasma display panel - Google Patents

Abstract

The present invention relates to a method of manufacturing a plasma display panel to improve the cutting method of the exhaust pipe in the manufacturing process of the plasma display panel, there is an effect to prevent the occurrence of contamination when cutting the exhaust pipe, and to increase the work efficiency.

The present invention is a plasma display panel manufacturing method of the plasma display panel comprising a discharge pipe for injecting exhaust gas and discharge gas to the rear substrate is bonded to the front substrate and the rear substrate at a predetermined interval, the plasma display panel is discharged And injecting gas into the panel through the exhaust pipe, sealing the exhaust pipe to seal the exhaust pipe, and cutting the exhaust pipe by applying heat of a predetermined temperature to the exhaust pipe.

Plasma Display Panel, Exhaust Pipe, Cutting, Heating, Pollution

Description

Manufacturing method of plasma display panel {Manufacturing Method of Plasma Display Panel}

1 is a view showing the structure of a typical plasma display panel.

2 is a view for explaining a method of manufacturing a conventional plasma display panel.

3A to 3D are diagrams illustrating an application example of the manufacturing method of the conventional plasma display panel of FIG.

4 illustrates a method of manufacturing a plasma display panel of the present invention.

5A to 5D illustrate an example of a method of manufacturing the plasma display panel of the present invention of FIG.

6 is a view showing an example of an exhaust pipe cutting device used in the method of manufacturing a plasma display panel of the present invention.

7 is a view showing another example of the exhaust pipe cutting apparatus used in the method of manufacturing a plasma display panel of the present invention.

8 is a view showing an example of a method for cutting a plurality of exhaust pipe with a plurality of exhaust pipe cutting device.

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

34: exhaust pipe 60: exhaust pipe cutting device                 

61 heating device 62 separator

The present invention relates to a plasma display panel, and more particularly, to a method of manufacturing a plasma display panel to improve the production efficiency by improving the cutting method of the exhaust pipe during the manufacturing process of the plasma display panel.

In general, a plasma display panel is a partition wall formed between a front substrate and a rear substrate to form a unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and The same main discharge gas and an inert gas containing a small amount of xenon (Xe) are filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 illustrates a structure of a general plasma display panel. As shown, the plasma display panel includes a front substrate 10 in which a plurality of sustain electrode pairs formed by pairing a scan electrode 101 and a sustain electrode 102 on a front glass 100 that is a display surface on which an image is displayed. And a rear substrate 11 having a plurality of address electrodes arranged on the rear glass 110 forming the rear surface so as to intersect with the plurality of sustain electrode pairs described above.                         

The front substrate 10 is made of a scan electrode 101 and a sustain electrode 102, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 101 and the sustain electrode 102 provided as the bus electrode b are included in pairs. The scan electrode 101 and the sustain electrode 102 are covered by one or more dielectric layers 103 which limit the discharge current and insulate the electrode pairs, and the magnesium oxide top surface of the dielectric layer 103 to facilitate the discharge conditions. A protective layer 104 on which (MgO) is deposited is formed.

The rear substrate 11 is arranged in such a manner that a plurality of discharge spaces, that is, barrier ribs 111 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 112 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 111. On the upper side of the rear substrate 11, R, G, and B phosphors 113 which emit visible light for image display during address discharge are coated. A white dielectric 114 is formed between the address electrode 112 and the phosphor 113 to protect the address electrode 112 and reflect visible light emitted from the phosphor 113 to the front substrate 10.

Looking at the manufacturing method of the plasma display panel having such a structure as shown in FIG.

2 is a view for explaining a method of manufacturing a conventional plasma display panel. As shown, a substrate forming step (S20) of forming a front substrate and a rear substrate, respectively, with a front glass and a rear glass, the step of bonding the front substrate and the rear substrate (S21), between the bonded front substrate and the rear substrate The exhaust step (S22) for exhausting impurity gas such as moisture or nitrogen to the outside through a predetermined exhaust pipe, and then injecting discharge gas such as helium or xenon through a predetermined exhaust pipe between the bonded front substrate and the rear substrate. A discharge gas injection step (S23), a step (S24) of sealing the exhaust pipe which is a passage for exhausting the impurity gas or injecting the discharge gas (S24), and a worker manually removing the sealed exhaust pipe (S25). . The manufacturing method of the conventional plasma display panel is described with reference to FIGS. 3A to 3D.

Substrate forming step (S20) of forming the front substrate and the rear substrate with the front glass and the rear glass, respectively, the electrode, dielectric layer, protective layer, barrier ribs on the front and rear glass fixed and aligned combined with a predetermined fixing guide plate , Forming a phosphor layer and the like. More specifically, an electrode, a dielectric layer, a protective layer are formed on the front glass and the rear glass according to the upper and lower panels, or the electrode, the dielectric layer, the partition wall, and the phosphor layer are formed to form the front substrate and the rear substrate.

In the bonding step S21, as shown in FIG. 3A, a predetermined seal material 32 is applied between the front substrate and the rear substrate, and predetermined pressing means 31 such as a clip is attached to the edges of the front substrate and the rear substrate. ) To install and attach to each other. Hereinafter, the front substrate and the rear substrate are bonded to each other, which is called the panel 30. In addition, at one end of the panel 30, an exhaust hole 33 for exhausting the impurity gas remaining inside is formed.

As shown in FIG. 3B, the evacuation step S22 is provided between the front substrate and the back substrate joined in the bonding step S21, ie, impurities such as moisture or nitrogen in the panel 30. By using the exhaust pipe 34 is exhausted to the outside. At this time, the exhaust pipe 34 is inserted into the exhaust hole 33 of FIG. 3A, and the exhaust pipe fixing member 35 is applied to a portion where the exhaust pipe 34 and the panel 30 contact each other so that the exhaust pipe 34 does not escape. Secure it.

As shown in FIG. 3C, the discharge gas injection step S23 contains a main discharge gas such as neon, helium or a mixture of neon and helium and a small amount of xenon between the front substrate and the rear substrate, that is, inside the panel 30. Injecting an inert gas into the predetermined gas injection means 37 through the exhaust pipe 34.

The exhaust pipe sealing step S24 is a step of sealing the exhaust pipe 34 from the outside for injecting discharge gas or exhausting impurity gas in the panel to the outside, as shown in FIG. 3D. In this case, various methods are applicable, such as sealing the exhaust pipe by inserting a predetermined substance into the exhaust pipe 34, or sealing the exhaust pipe by applying heat to the exhaust pipe. In this way, the point where the exhaust pipe 34 is sealed is indicated by reference numeral 38.

Step (S25) of removing the exhaust pipe 34, the operator cuts the exhaust pipe 34 in a sealed state with a predetermined cutting equipment and grinding equipment, and grinds the cut portion. At the same time to suck the debris generated during the cutting and grinding operations with a predetermined suction device, such as a vacuum cleaner, in order to prevent contamination by the debris during the cutting and grinding operations.

Thereafter, the plasma display panel is completed through a process such as firing and module attachment.

However, such a conventional method of manufacturing a plasma display panel has a problem that contamination occurs due to debris of the exhaust pipe 34 in the step of removing the exhaust pipe 34. In order to prevent contamination due to such fragments, although a conventional suction device, such as a vacuum cleaner, is used to cut and grind the exhaust pipe 34, it cuts and smooths the hard glass. Due to the features of the thin cutting and grinding operations, the fragments are scattered irregularly in all directions, and therefore it is virtually impossible to suck all the fragments scattered with a predetermined suction device. Therefore, the contamination caused by the debris is generated in the step of removing the exhaust pipe 34, and since the operator directly performs the removal of the exhaust pipe 34 by hand, the uniformity of the work decreases and the working time increases.

In order to solve this problem, the present invention removes impurity gas remaining inside the panel, and in the case of removing the exhaust pipe for injecting discharge gas into the panel, the plasma display panel is configured to cut by applying a predetermined temperature of heat to the exhaust pipe. The purpose is to provide a manufacturing method.

According to the present invention, a plurality of pairs of parallel display electrodes formed on a front substrate are disposed, a plurality of address electrodes are disposed on a rear substrate in a direction crossing the display electrodes, and a discharge space is divided on the rear substrate. A barrier rib is formed, a phosphor is formed between the barrier ribs, the front substrate and the rear substrate are coupled at a predetermined interval, and a plasma display panel having an exhaust pipe for injecting exhaust and discharge gas into the rear substrate. In the method of manufacturing, the plasma display panel includes the step of injecting the discharge gas into the panel through the exhaust pipe, sealing the exhaust pipe and cutting the exhaust pipe by applying heat of a predetermined temperature to the exhaust pipe. Characterized in that.

The cutting of the exhaust pipe in the exhaust pipe cutting step is characterized in that it is performed by the exhaust pipe removal device.

Hereinafter, a method of manufacturing a plasma display panel of the present invention will be described in detail with reference to the accompanying drawings.

4 is a view showing a method of manufacturing a plasma display panel of the present invention. As shown, the method of manufacturing a plasma display panel of the present invention comprises the steps of forming a front substrate and a rear substrate (S400), the step of bonding the above-mentioned front substrate and the rear substrate (S401), the bonded front substrate and An exhaust step (S402) for exhausting impurity gas remaining between the rear substrate to the outside through the exhaust pipe (S402), and a discharge gas for injecting the discharge gas into the panel between the bonded front substrate and the rear substrate, that is, inside the panel through the exhaust pipe It includes an injection step (S403), the exhaust pipe sealing step (S404) for sealing the exhaust pipe from the outside and the exhaust pipe cutting step (S405) for cutting by applying heat of a predetermined temperature to the exhaust pipe. Here, the exhaust pipe cutting step (S405) described above includes a exhaust pipe local heating step (S406) for locally heating a predetermined point of the exhaust pipe, an exhaust pipe detachment step (S407) for twisting and cutting the exhaust pipe, and a heat treatment for the cut surface of the exhaust pipe. Cutting surface heat treatment step (S408) to be bent.

The front substrate and rear substrate forming step (S400) is to form a front substrate and a rear substrate, respectively, with a front glass and a rear glass, the electrode on the front glass and the rear glass fixed and aligned combined with a predetermined fixing guide plate, It is a step of forming a dielectric layer, a protective layer, a partition, a phosphor layer, and the like. More specifically, an electrode, a dielectric layer, a protective layer are formed on the front glass and the rear glass according to the upper and lower panels, or the electrode, the dielectric layer, the partition wall, and the phosphor layer are formed to form the front substrate and the rear substrate.

Bonding step (S401) is a step of applying a predetermined seal (Seal) between the front substrate and the rear substrate and a predetermined pressing means such as a clip on the edge of the front substrate and the rear substrate to be bonded to each other. Hereinafter, the front substrate and the rear substrate are bonded to each other. In addition, at one end of the unit panel, an exhaust hole for exhausting the impurity gas remaining inside is formed.

The exhausting step (S402) is a step of exhausting impurities between the front substrate and the rear substrate bonded in the bonding step (S401), that is, moisture such as moisture or nitrogen inside the panel to the outside through the exhaust pipe by using a predetermined exhausting means. At this time, the exhaust pipe is inserted into the exhaust hole.

Discharge gas injection step (S403) is an inert gas containing a small amount of xenon and a main discharge gas such as neon, helium or a mixture of neon and helium inside the front substrate and the rear substrate, the predetermined gas injection means Injecting through the exhaust pipe.                     

The exhaust pipe sealing step is a step of sealing the exhaust pipe from the outside for injecting discharge gas or exhausting the impurity gas in the panel to the outside. In this case, various methods may be applied, such as sealing the exhaust pipe by inserting a predetermined substance into the exhaust pipe, or sealing the exhaust pipe by applying heat to the exhaust pipe.

The exhaust pipe cutting step S405 cuts the exhaust pipe by applying heat of a predetermined temperature to a predetermined position of the exhaust pipe. This exhaust pipe cutting step (S405) is, as described above, the exhaust pipe local heating step (S406) for locally heating a predetermined point of the exhaust pipe, the exhaust pipe detachment step (S407) for twisting the exhaust pipe to cut and heat treatment the cut surface of the exhaust pipe Including the cutting surface heat treatment step (S408), such exhaust pipe cutting step (S405) will be described in more detail in conjunction with Figures 5a to 5d as follows.

As shown in FIG. 5A, the exhaust pipe local heating step S406 exhausts impurity gas remaining between the bonded front substrate and the rear substrate, that is, inside the panel 30 to the outside, or discharge gas inside the panel 30. It is to heat a predetermined position of the exhaust pipe 34 for injecting. Here, reference numeral 38 in FIG. 5A denotes an exhaust pipe seal that seals the exhaust pipe 34 to seal the inside of the panel 30 from the outside. At this time, the heating position of the exhaust pipe 34 is preferably a position on the exhaust pipe 34 after the exhaust pipe sealing portion 38 of the exhaust pipe 34. In this case, the heating temperature at the time of heating the predetermined position of the exhaust pipe 34 may be determined in consideration of the material of the exhaust pipe 34 and the thickness of the exhaust pipe 34. For example, when the exhaust pipe 34 is formed of a material that is relatively heat resistant, or when the thickness of the exhaust pipe 34 further increases, the heating temperature increases.

As shown in FIG. 5B, the exhaust pipe detachment step S407 twists the exhaust pipe sealing portion 38 of the exhaust pipe 34 at a predetermined force and speed, that is, rotates and at the same time the exhaust pipe sealing part 38 of the exhaust pipe 34. After that, the panel 30 is pulled in the direction opposite to the direction in which it is located. This distorts and pulls the point on the exhaust pipe 34 having fluidity of a predetermined size by heating, thereby cutting off the heated point on the exhaust pipe 34. The shape in which the exhaust pipe 34 is rotated and pulled and cut at a predetermined speed and force is shown in FIG. 5C. At this time, the speed and force of rotating after the exhaust pipe seal 38 of the exhaust pipe 34 are determined in consideration of factors such as the material and thickness of the exhaust pipe 34. That is, if the thickness of the exhaust pipe 34 is increased or if the exhaust pipe 34 is formed of a relatively heat resistant material, the force and speed for rotating the exhaust pipe 34 are increased.

Since the cut surface of the exhaust pipe 34 is likely to have a pointed shape after the step of leaving the exhaust pipe (S407), heat is applied to the cut surface to melt the cut surface of the exhaust pipe 34 so as to be gently curved as shown in FIG. 5D. More preferably, S408 is further included. This cut surface heat treatment step (S408) can be omitted if the cut surface is gentle to the exhaust pipe 34 cut in the above-described exhaust pipe departure step (S407).

When the cutting of the exhaust pipe 34 in the exhaust pipe cutting step S405 is performed by an exhaust pipe cutting device in which the heating device and the separating device are integrally formed, rather than being manually performed by an operator, moreover when considering aspects of work efficiency. desirable. Looking at an example of such an exhaust pipe cutting device as shown in FIG.                     

6 is a view showing an example of an exhaust pipe cutting apparatus used in the method of manufacturing a plasma display panel of the present invention. As shown, the exhaust pipe cutting device 60 used in the method of manufacturing a plasma display panel of the present invention is the heating device 61 and the exhaust pipe 34 that injects a flame of a predetermined temperature to heat the exhaust pipe 34 Holds one side and includes a separator 62 for cutting by rotating the exhaust pipe (34).

Unlike the exhaust pipe cutting device of FIG. 6, the structure of the heating device that heats the exhaust pipe may be variously modified to form an exhaust pipe cutting device different from the exhaust pipe cutting device of FIG. 6. Next, as shown in FIG.

7 is a view showing another example of the exhaust pipe cutting apparatus used in the method of manufacturing a plasma display panel of the present invention. As illustrated, the exhaust pipe cutting device 73 used in the method of manufacturing the plasma display panel of the present invention is different from the case of FIG. 6 in that the heating device 70 evenly distributes the exhaust pipe 34 at a predetermined position of the exhaust pipe 34. Is made to heat. The heating device 70 may include a nichrome wire 72 for converting electrical energy into thermal energy. In addition, the heating device 70 evenly heats the exhaust pipe 34 at a predetermined position of the exhaust pipe 34 so that the heat is relatively evenly distributed to the exhaust pipe 34 so that the exhaust pipe 34 is more easily provided by the separating device 71. ) Is cut.

In addition, by using a plurality of such exhaust pipe cutting device it can be to cut a plurality of exhaust pipe in a single process. Looking at such a method as shown in FIG.

8 is a view illustrating an example of a method of cutting a plurality of exhaust pipes with a plurality of exhaust pipe removal apparatus. As illustrated, a method of cutting a plurality of exhaust pipes with a plurality of exhaust pipe cutting devices includes a plurality of exhaust pipe cutting devices 83 including a plurality of exhaust pipe cutting devices 80 after aligning the plurality of panels 30 at predetermined intervals. Cutting each exhaust pipe 34 formed in each of the plurality of panels 30 at the same time. At this time, the interval between the exhaust pipe cutting device 80 provided in each of the multiple exhaust pipe cutting device 83 and the interval between each of the plurality of panels 30 to match.

By using the multiple exhaust pipe removal device 83 as described above, since the exhaust pipes 34 formed on the plurality of panels 30 can be simultaneously cut, the process time is reduced.

Thereafter, the plasma display panel is completed through a process such as firing and module attachment.

As described above, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described in detail above, the present invention has the effect of reducing the occurrence of contamination and increasing the working efficiency by heating and cutting the exhaust pipe at the time of cutting the exhaust pipe.

Claims (2)

A plurality of pairs of parallel display electrodes formed on the front substrate are disposed, a plurality of address electrodes are disposed on the rear substrate in a direction crossing the display electrodes, and partition walls are formed on the rear substrate to divide the discharge space. In the method of manufacturing a plasma display panel having a phosphor formed therebetween, the front substrate and the rear substrate are coupled with a predetermined interval, and having an exhaust pipe for injecting exhaust and discharge gas into the rear substrate, The plasma display panel Injecting the discharge gas into the panel through an exhaust pipe; Sealing the exhaust pipe; And Cutting the exhaust pipe by applying a predetermined temperature to the exhaust pipe Method of manufacturing a plasma display panel comprising a. The method of claim 1, The cutting of the exhaust pipe in the exhaust pipe cutting step A method of manufacturing a plasma display panel, characterized in that performed by the exhaust pipe removal apparatus.

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