KR100603274B1 - A method for forming seperators in plasma display panel and a case structurue for feeding pastes for seperators - Google Patents

Abstract

The partition wall forming method of the plasma display panel according to the present invention comprises the steps of providing a glass substrate; A partition supply paste supplying casing having a plurality of partition formation openings having the same pitch as the partition walls below the front surface, a plate member having a plurality of holes provided therein, and an outer surface of the partition supply paste supplying casing having an opening through which the partition formation paste is supplied. Preparing; Supplying a partition wall forming paste to the case and moving the partition wall forming paste relatively to the glass substrate to continuously supply the partition wall forming paste to the upper portion of the glass substrate through the partition wall opening to form a partition wall material; Firing and drying the partition wall material to complete the partition wall.

Description

A method for forming seperators in plasma display panel and a case structurue for feeding pastes for seperators}

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

2 is a view showing a sand blast method for forming a conventional partition wall;

3 is a perspective view showing a partition forming paste supply case according to the present invention;

FIG. 4 is a perspective view of a portion of the case of FIG. 3;

5 is a cross-sectional view taken along line 5-5 of FIG. 3;

6 is a perspective view according to another embodiment of the partition forming paste supply case according to the present invention; And

7 is a view showing a partition wall formation method according to the present invention.

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

100, 200: partition wall forming paste supply case 103, 105: plate

110, 210: partition wall forming paste supply opening 300: glass substrate

The present invention relates to a method for forming a partition of a plasma display panel (PDP) and a paste supply case for forming a partition for the same.

In general, a plasma display device is used to display an image using a gas discharge phenomenon, and is excellent in various display capacities such as display capacity, brightness, contrast, afterimage, viewing angle, etc., and has been spotlighted as a panel that can replace CRT. . In such a plasma display device, a discharge is generated in a gas between the electrodes by a direct current or an alternating voltage applied to the electrode, and the phosphor emits light by exciting the phosphor by radiation of ultraviolet rays.

The plasma display device can be divided into an alternating current type (AC type) and a direct current type (DC type) by a discharge mechanism. In the DC type, each electrode constituting the plasma display panel is directly exposed to the gas layer encapsulated in the discharge cell, and the voltage applied thereto is applied to the discharge gas layer as it is. In the AC type, the electrodes are separated by the discharge gas layer and the dielectric layer. The charged particles generated during the discharge phenomenon are not absorbed by the electrodes to form wall charges, and the next discharge is generated by using such wall charges.

FIG. 1 is a schematic exploded perspective view of a structure of a general AC plasma display device.

Referring to the drawings, a first electrode 13a which is a transparent display electrode and a second electrode 13b which is an address electrode are formed between the front glass substrate 11 and the rear glass substrate 12. The first electrode 13a and the second electrode 13b are formed in a stripe shape on the inner surfaces of the front glass substrate 11 and the back glass substrate 12, respectively, when the substrates 11 and 12 are assembled to each other. Cross at right angles. The dielectric layer 14 and the protective film 15 are sequentially stacked on the inner surface of the front glass substrate 11. On the other hand, in the back glass substrate 12, the partition 17 is formed on the upper surface of the dielectric layer 14 ', and the cell 19 is formed by the partition 17. The cell 19 is filled with an inert gas such as argon. In addition, the phosphor 18 is applied to a predetermined portion inside the partition wall 17 forming each cell 19.

Referring to the operation of the plasma display device having the above configuration schematically, first, a high voltage called a trigger voltage is applied to cause the discharge of the electrodes 13a and 13b. Discharge occurs when cations are stored in the dielectric layer 14 by the trigger voltage. When the trigger voltage exceeds the threshold voltage, the argon gas or the like charged in the cell 19 becomes a plasma state by discharge, and can maintain a stable discharge state between the electrodes 13a and 13b. In the stable discharge state, the light in the ultraviolet region collides with the phosphor 18 in the discharge light to emit light, so that each pixel formed for each cell 19 can display an image.

As described above, the partition wall in the plasma display device provides a place where the fluorescent film is applied, and also has a function of partitioning the discharge space.

The barrier rib forming method according to the prior art includes a screen printing method and a sand blasting method.

The screen printing method is a method of forming a partition by printing a partition material paste on a glass substrate using a screen having a predetermined partition shape, drying it, and then repeatedly printing and drying to secure a partition height of a predetermined shape. .

In recent years, the sand blasting method is applied to a glass back substrate by applying a paste of a partition material to a certain thickness, drying, and then forming a protective film in the shape of a desired partition on the glass backing substrate or by inserting a sandblast mask in the state of This is a method of removing unnecessary parts by spraying sand at high pressure. The bulkhead is then fired to complete the partition.

These methods, however, must go through a plurality of steps to form a plurality of partitions on the glass substrate.

In the case of the screen printing method, at least ten or more prints are required to form a partition having a predetermined height, and a high technology is required.

In the case of the above-described sand blasting method, a plurality of processes are required as shown in FIG.

First, a thick film paste 30, which is a partition wall material, is uniformly applied to the glass substrate 20 (FIG. 2A), and a photosensitive resist having a high resistance to sand blast is applied thereon. 40) (FIG. 2B) When the partition pattern is subjected to ultraviolet light exposure to the photoresist 40 using the photomask 45 (FIG. 2C), the exposed portion is chemically stable. When this is developed, a pattern 405 like a partition is formed in the photoresist. (FIG. 2D) Next, when the abrasive is blown out at high pressure on the entire surface, the portion 406 to which the resist is not attached is removed by the force. (E) Then, the partition wall is fired to complete the partition wall 37.

As described above, in the case of forming the partition wall according to the sand blasting method, a plurality of processes are performed.

In forming the partition wall of the plasma display panel, it is very advantageous if the process can be shortened. This shortening of the process can, for example, reduce the cost of the process.

The present invention provides a method for forming a partition wall, the process of which is greatly simplified compared to a conventional method for forming a partition wall. Accordingly, an object of the present invention is to provide a partition wall forming method for efficiently forming partition walls in a plasma display device.

The partition wall forming method of the plasma display panel according to the present invention comprises the steps of providing a glass substrate; A partition supply paste supplying casing having a plurality of partition formation openings having the same pitch as the partition walls below the front surface, a plate member having a plurality of holes provided therein, and an outer surface of the partition supply paste supplying casing having an opening through which the partition formation paste is supplied. Preparing; Supplying a partition wall forming paste to the case and moving the partition wall forming paste relatively to the glass substrate to continuously supply the partition wall forming paste to the upper portion of the glass substrate through the partition wall opening to form a partition wall material; Firing and drying the partition wall material to complete the partition wall.

Here, it is preferable that a plurality of plate members having a plurality of openings provided on an inner surface of the barrier rib forming paste supply case are provided.
In addition, a lower end portion of the front surface of the case may be formed to be spaced apart from the glass substrate at a predetermined interval so that a predetermined gap is formed when the front surface of the case in which the barrier rib opening is formed is in contact with the glass substrate.

According to the present invention, since the partition plate paste supplying case is provided with a plate having a plurality of holes in its inner surface, the paste introduced into the case through the supply opening of the partition forming paste formed on the outer surface of the case is The lower surface is uniformly supplied to the lower surface through the hole of the plate. In addition, the more the plurality of plate materials are installed, the less the influence of the pressure of the paste delivered to the lower surface, the paste supply amount is kept more constant.

Thus, a plurality of partition wall forming openings having the same pitch as the partition walls is formed below the front surface of the partition wall forming paste supplying case in which the partition wall forming paste is uniformly supplied. The partition forming paste supply case is moved with relative movement with respect to the glass plate. Then, the paste flowing through the plurality of holes of the plate member provided on the inner surface of the case is uniformly supplied to the glass substrate through the plurality of partition wall openings provided below the front surface of the case. In this case, since the case moves relative to the glass substrate and the barrier rib opening has the same pitch as the barrier rib, the barrier member having the same shape as the barrier rib is formed on the glass substrate along the trajectory where the case moves on the glass substrate. Is formed. Next, the partition wall is baked and dried to complete the partition wall.

The lower end portion of the front surface of the case may be formed to be spaced apart from the glass substrate at a predetermined interval so that a predetermined gap is formed when the front surface of the partition formation paste supply case in which the partition formation opening is formed is in contact with the glass substrate. have.

Embodiments of the present invention will be described with reference to the accompanying drawings.

First, FIG. 3 shows a paste supply case 100 for forming a partition wall according to the present invention.

As shown, the case 100 has an opening 101 for supplying paste into the case on its outer surface. In addition, a plurality of openings 110 having the same pitch as the partition wall to be formed are formed below the front surface 120. The opening 110 is provided by the number of partitions to be formed.

4 and 5, it is seen that the plate members 103 and 105 having a plurality of holes are formed on the inner surface of the barrier rib forming paste supply case 100. 4 is a perspective view in which a portion of the case 100 is cut to show the plate materials 103 and 105, and FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 3.

As shown in the figure, two inner plates 103 and 105 are provided on the inner surface of the barrier rib forming paste supply case 100, and each of the plurality of holes 133, 135, 137, 153, 155, 157 is formed. As described above, the plate having a plurality of holes is provided on the inner surface of the case 100, so that a uniform amount of paste is provided through the barrier rib forming openings 110 formed below the front surface of the case 100. Can be supplied. In addition, the more the plurality of plate materials are installed, the less the influence of the pressure of the paste delivered to the lower surface, the paste supply amount is kept more constant. Therefore, the larger the number of the plate, the more advantageous.

6 shows another embodiment of the barrier rib forming paste supply case 200 according to the present invention, when the front surface 220 in which the barrier rib opening 210 is formed is in contact with a glass substrate. The lower end portion of the front surface 220 of the case is formed to be spaced apart from the glass substrate at a predetermined interval so as to be formed. As such, the partition wall formed when the lower end of the front surface 220 of the case is spaced apart from the glass substrate by the gap h may maintain at least the height of the gap h.

According to the present invention, the partition wall is formed on the glass back substrate of the plasma display panel by using the partition wall forming paste supply cases 100 and 200. This will be described with reference to FIG. 7.

First, a glass substrate 300 is provided as shown in FIG. Next, the above-described partition wall forming paste supplying case 100 or 200 is provided, and the partition wall forming paste is supplied to the case 100 or 200 through the openings 101 and 201 of the outer surface of the case.

The case 100 and 200 are moved relative to the glass substrate 300 in the longitudinal direction in which the partition wall is formed. Then, the barrier rib forming paste is continuously supplied to the glass substrate through the plurality of barrier rib forming openings 110 and 210, and the cases 100 and 200 are moved relative to the glass substrate 300. The barrier rib 310 is formed on the glass substrate 300 along the movement thereof. This state is shown in Fig. 7B. Here, the partition forming paste is adjusted to have a high viscosity so that the paste supplied to the glass substrate 300 through the partition forming openings 110 and 210 of the cases 100 and 200 maintains the shape as the partition wall material. Do it.

Thus, the partition material 310 is baked with respect to the glass substrate in which the partition material 310 was formed, and then dried. Then, the partition 3100 is completed. This state is shown in Fig. 7C.

As described above, according to the present invention, it can be seen that the partition wall material is formed on the glass substrate by the relative motion with respect to the glass substrate of the bulkhead forming paste supply case, thereby efficiently forming the partition wall in a simple process. Accordingly, it will be appreciated that the object of the present invention has been implemented.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments are possible.

Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

Claims (5)

Providing a glass substrate; A partition supply paste supplying casing having a plurality of partition formation openings having the same pitch as the partition walls below the front surface, a plate member having a plurality of holes provided therein, and an outer surface of the partition supply paste supplying casing having an opening through which the partition formation paste is supplied. Preparing; Supplying a partition wall forming paste to the case and moving the partition wall forming paste relatively to the glass substrate to continuously supply the partition wall forming paste to the upper portion of the glass substrate through the partition wall opening to form a partition wall material; And Firing and drying the partition material to complete the partition wall. The method of claim 1, And a plurality of plate members having a plurality of openings provided on an inner surface of the barrier rib forming paste supply case. The method according to claim 1 or 2, The bottom wall of the front surface of the case is formed to be spaced apart from the glass substrate by a predetermined interval so that a predetermined gap is formed when the front surface of the case in which the barrier rib opening is formed is in contact with the glass substrate. Way. A partition supply paste for casing having a plurality of partition formation openings having the same pitch as the partition walls below the front surface, and a plate material having a plurality of holes provided therein, and an outer surface of the partition supply paste having an opening through which the partition formation paste is supplied. The method of claim 4, wherein The bottom wall of the front surface of the case is formed to be spaced apart from the glass substrate at a predetermined interval so that a predetermined gap is formed when the front surface of the partition wall forming paste supply case in which the partition wall opening is formed is in contact with the glass substrate. Forming paste supply case.

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