KR20020024723A - Barrier forming method for plasma display panel - Google Patents

Abstract

The present invention relates to a method for forming a partition for PDP. The partition wall forming method according to the present invention comprises the steps of linearly forming a groove for partition wall formation on an upper surface of a mold having a plane; Transferring a silicon rubber to an upper surface of the mold having the groove to form a first silicon rubber mold having a corresponding groove; And pressing the first silicon rubber mold onto the lower plate glass coated with a predetermined thickness of glass space to form a partition wall on the lower plate glass. By forming the partition wall on the bottom plate grass using the silicon rubber mold obtained by the mold, it is possible to expect the advantage that the partition wall can be formed more easily and the partition wall can be formed while following the bending of the bottom plate grass.

Description

Barrier forming method for plasma display panel

The present invention relates to a partition wall forming method of a plasma display panel (hereinafter referred to as PDP), and more particularly, to a partition wall forming method configured to form a partition wall on a lower plate glass of a PDP using a mold. It is about.

PDP is the next generation display device, which is expected to be widely used in the future display field following the existing CRTs and LCDs due to the excellent quality of the displayed image itself.

Looking at the function of the schematic PDP, a constant discharge space is formed between the upper plate and the lower plate glass, and the discharge gas is filled in the discharge space. A discharge electrode is used to generate a discharge in such a discharge space and excites a fluorescent layer applied to one side of the discharge space therein to form an image that can be recognized by a person.

In order to form a discharge space, partition walls are formed on the bottom glass. Such a partition wall has a function of electrically and optically preventing mutual interference with adjacent portions while forming a discharge space between the upper and lower plate glass.

Such a partitioning method is currently being formed using various methods such as screen printing, sandblasting, photosensitive glass, and the like. However, the conventional method for forming the partition wall as described above is that the process is very complicated and requires precision, which is undesirable in terms of production cost and productivity.

An object of the present invention is to provide a simpler and more productive method for forming partition walls of PDP.

Another object of the present invention is to provide a partition wall forming method capable of forming a uniform partition wall regardless of the flatness and bending of the bottom plate grass while ensuring releasability with the bottom plate grass.

1 is a cross-sectional view of a general dicing saw blade.

2 is an exemplary view showing a state in which a dicing saw processes a mold.

Figure 3a is a perspective view of the mold completed according to the first embodiment of the present invention.

Figure 3b is a perspective view of the mold completed by the second embodiment of the present invention.

Figure 4a is a process diagram of the silicon rubber mold completed by the first embodiment of the present invention.

Figure 4b is a process diagram of a silicon rubber mold completed by a second embodiment of the present invention.

5 is a process diagram of a second silicon rubber mold completed by a second embodiment of the present invention.

6 is a process chart for forming a partition wall using the silicon rubber mold of the present invention.

Figure 7 is a side view of the bottom plate glass completed by the present invention.

Figure 8 is a side view of the bottom plate glass completed by the present invention.

9 is a flow chart showing the process of the present invention.

PDP bulkhead forming method according to the present invention for achieving the above object, the process of linearly forming a groove for forming the partition on the upper surface of the mold having a plane; Transferring a silicon rubber to an upper surface of the mold having the groove to form a first silicon rubber mold having a corresponding groove; The technical gist of the present invention includes a process of forming a partition wall on the bottom plate glass by pressing the first silicon rubber mold onto the bottom plate glass coated with a predetermined thickness.

And a partition wall forming method for PDP according to another embodiment of the present invention, the process of linearly forming a groove for forming the partition on the upper surface of the mold having a plane; Transferring a silicon rubber to an upper surface of the mold having the groove to form a first silicon rubber mold having a corresponding groove; Transferring a silicon rubber to an upper surface of the first silicon rubber mold to form a second silicon rubber mold having a corresponding groove; And forming a partition wall on the bottom plate glass by pressing the second silicon rubber mold onto the bottom plate glass coated with the predetermined thickness.

The mold may be made of cemented carbide, glass, or silicon carbide. And it is preferable to shape | mold the groove | channel formed in such a metal mold | die using a dicing saw blade.

According to the present invention as described above, in forming the PDP partition wall, there is a feature that can be manufactured by a simple process using a silicon rubber mold, and has the flexibility in the characteristics made of silicon rubber, It is possible to expect the effect of being able to form a uniform partition wall while following the bending.

Next, the present invention will be described in more detail with reference to the embodiments as shown in the drawings.

In the following description of the present invention, the overall process is based on the flowchart shown in FIG. 9, and the mold and the partition wall according to the present invention will be described with reference to FIGS. 1 to 8. Shall be.

The PDP partition wall forming method according to the present invention starts at the step of forming a mold for implementing the partition wall (step 110 of FIG. 9). In the molding of the mold according to the present invention, a dicing saw blade is used. A general dicing saw blade is illustrated in FIG. 1. Dicing saws are generally used for parts for cutting semiconductor wafers.

The dicing saw generally consists of a disc shaped body 4 and a blade 2 attached to the outer peripheral surface of the disc shaped body. The disc-shaped main body 4 is attached to a rotating device to rotate. In this rotation, the blade 2 is cut while forming a constant groove with respect to the workpiece while contacting the workpiece.

Such a blade 2 usually uses a diamond blade. Dicing saw blades using diamond blades are used for materials such as compound semiconductors (GaAs), silicon (Si), ferrite, etc., and all semiconductors, such as lamination, selection, and removal, are used. It is a device mainly used to cut the silicon wafer after the process by a certain chip unit. The diamond blade 2 is a part which participates in actual processing, and diamond is electrodeposited and used normally. In addition, the high-speed rotation can reduce the cutting resistance of each fine diamond, preventing chipping is an advantage of the diamond blade.

In the present invention, it is possible to use a grinding wheel in addition to the dicing saw blade as described above. That is, according to the present invention, it is possible to use a device such as a dicing saw blade or a grinding wheel as long as it can form a mold as described later.

And in FIG. 2, the state which processes a certain groove | channel in the workpiece | work W is illustrated using this diamond blade. According to the present invention, the workpiece W becomes a mold for forming the silicon rubber moldings 41 and 51 to be described later, and the grooves BG formed thereby become grooves for forming the partition as described later. will be.

Further, as can be seen in Figure 2, using a diamond blade, the partition wall forming groove (BG) formed on the upper surface of the mold (W) has a rectangular cross-sectional shape, which is more accurate than using any other device You will be able to create

It is preferable to use what has sufficient constant chemical-wear-resistant material for the partition wall formation metal mold | die which concerns on this invention, and a cemented carbide is the typical example. In actual processing, in order to cope with the gas generated during processing of the mold, the material of the mold must have a certain chemical resistance property, and wear resistance is required to maintain a consistently accurate shape when the partition wall formation process according to the present invention is repeated. Should be provided. Carbide alloys may be cited as one having such properties. Alternatively, in addition to the cemented carbide, glass, silicon (silicon wafer), silicon carbide, and the like can be completed in addition to the cemented carbide.

By going through the above process, the completed mold is shown in FIG. In the mold 31 shown in Fig. 3A, a groove 33 corresponding to a gap between the partition walls 64 (see Fig. 7) in the bottom plate grass to be completed is formed by the dicing saw blade described above. In the mold 32 shown in FIG. 3B, the groove 34 corresponding to the partition wall 64 (see FIG. 7) of the bottom plate grass to be completed is completed by the dicing saw blade.

As such, when the mold 31 is completed, a process of molding a flexible mold using a ductile material is performed. First, the present invention will be described through a process of forming a silicone rubber mold as an exemplary embodiment of a flexible mold.

When the molds 31 and 32 are completed through the above process, the silicon rubber molds 41 and 42 are formed of a silicon rubber material by using the grooves 33 and 34 processed in the process (see FIG. 9). Step 120).

Forming the silicon rubber mold 41 shown in FIG. 4A is completed by pouring a liquid silicon rubber on the upper part of the metal mold 31 of FIG. 3A. Looking at this process, after completely diluting a predetermined ratio (for example, about 10% by weight) of the curing material in the silicone rubber, and then at an appropriate temperature (for example, about 38 ℃), the upper portion of the mold 31 Poured, when a predetermined time (for example, about 24 hours) elapses, the silicon rubber mold 41 can be completed.

Since the grooves 33 of the mold 31 shown in FIG. 3A correspond to the gaps between the partition walls 64 (see FIG. 7) of the bottom plate grass, the mold 31 is actually shown in FIG. 4A. As shown in FIG. 6, the silicon rubber mold 41 completed by using the above can directly form the partition 64 of the bottom plate grass 62. Therefore, the partition wall forming groove 43 which can form the partition wall of the bottom plate grass of a PDP is completed in the lower surface of the silicon rubber mold 41 completed using the metal mold 31 shown in FIG. 3A.

When the silicon rubber mold 42 is made primarily by the above-described method using the mold 32 shown in Fig. 3B, the silicon rubber mold 42 as shown in Fig. 4B is completed. Since the grooves 44 formed on the bottom surface of the silicon rubber mold 42 correspond to the gaps between the partition walls, the silicon rubber mold 42 cannot directly form the partition wall of the bottom plate grass, and thus is shown in FIG. 5. You will go through the same process once again.

That is, as shown in FIG. 4B, when the silicon rubber mold 51 is completed once again using the silicon rubber mold 42 in the state shown in FIG. 4B, the silicon rubber mold 51 is substantially shown in FIG. 4A. It becomes the same shape as the silicon rubber mold 41 of.

Here, since the mold 32 shown in FIG. 3B forms the grooves 34 corresponding to the partition walls of the lower plate glass of the PDP, the silicon rubber mold 42 is primarily formed, and then, once again, After the secondary process of forming the silicon rubber mold 51 shown in FIG. 5 using the silicon rubber mold 42, the silicon rubber mold 51 capable of forming a partition on the bottom plate grass of the PDP is completed. Will be. In the process of transferring the silicon rubber mold 51 using silicon of the same material as described above, the release agent film 52 is required to secure the release property between the silicon rubber mold 42 and the silicon rubber mold 51. Done. Therefore, as shown in FIG. 5, in the case of completing the silicone rubber mold over the secondary, the release agent film 52 is formed on the boundary line of each silicone rubber mold, and then the silicone rubber mold ( 51) The process of forming will have to go on.

As shown in FIG. 6, the silicon rubber molds 41 and 51 completed through the above process can be seen that the partition wall forming groove 43 is provided on the lower surface thereof.

In the above, the present invention has been described through an embodiment in which the silicon rubber molds 41 and 51 are completed using the mold 31. However, in the present invention, the mold used for molding the bottom plate grass of the PDP cannot be limited to the silicon rubber mold. As long as it has a certain flexibility, such as silicone rubber mold, it is also possible to mold the mold using a different material.

For example, a synthetic resin mold having a certain flexibility may be used instead of the silicone rubber mold. Molding the synthetic resin mold may be configured in almost the same manner as described above. In the case of using the synthetic resin mold, when the mold is made of the synthetic resin because mold release is necessary in the process for forming the mold described above or in the process of forming the bottom plate grass of the PDP using graspers as described below. It is most preferable that the molding is made of a synthetic resin material to ensure releasability. Therefore, it will be most preferable to use a fluorine resin such as, for example, PTEE, PFA, FEP, ETFE and the like. And when molding a mold using a synthetic resin, of course, it must be selected to satisfy the conditions, such as heat resistance required in the whole process according to the present invention.

Alternatively, the entire mold may be used as the fluorine resin as described above, but the mold may be formed using a general synthetic resin material, but the fluorine coating may be performed on the surface, or the fluorine resin may be used at a predetermined depth from the surface. It will also be possible to mold.

Therefore, the mold according to the present invention can also use the silicone rubber mold as described above, or can use a synthetic resin material (preferably a fluorine-based synthetic resin material). Such a silicone rubber mold and a synthetic resin mold are considered to have at least the flexibility followed by the present invention.

In the following description of the present invention, a process using a silicon rubber mold will be described. However, in the following description, it is obvious that the silicone rubber mold can be replaced with a synthetic resin mold.

Next, a process of forming a partition on the bottom plate glass 62 of the PDP using the silicon rubber molds 41 and 51 is performed (step 130 of FIG. 9).

First, the graphite 61 is uniformly coated on the upper surface of the lower plate 62 of the PDP with a constant thickness. At this time, the graphite 61 is in a state of fluidity, and in reality, a small amount of a binder of a predetermined component is contained. And such a binder has the property of solidifying by heating.

Therefore, using the above-described silicon rubber mold (41, 51) to press the graphite 61 applied to the upper surface of the bottom plate grass 62 at an appropriate pressure, and at the same time suitable for the curing of the binder described above It is desirable to impart temperature conditions. That is, the silicon rubber molds 41 and 51 are pressed onto the upper surface of the grasp 61 under an atmosphere capable of satisfying a temperature condition for curing the binder and a pressure condition for forming the partition wall of the bottom plate glass.

When the silicon rubber molds 41 and 51 are released, as shown in FIG. 7, a stripe-shaped partition wall 64 having a predetermined interval may be completed on the upper surface of the bottom plate 62.

In the present invention, the silicon rubber molds 41 and 51 are used to form the partition wall 64 instead of a solid mold such as cemented carbide or glass. Since the silicone rubber molds 41 and 51 are made using the silicone rubber as described above, it is natural that the silicone rubber molds 41 and 51 have flexibility. In the present invention, for forming the bottom plate grass of the PDP, the following advantages can be expected by using the silicone rubber molds 41 and 51 having flexibility.

Fig. 8 shows a state in which the lower plate grass 62a of the PDP has a constant wave. Even in the case where the constant lower plate grass 62a has a waveness, the partition 64a can be sufficiently formed by using the silicon rubber molds 41 and 51 according to the present invention. That is, the silicon rubber molds 41 and 51 according to the present invention have the advantage of being able to form the partition 64a on the upper surface thereof while following the waveiness of the lower plate grass 62a.

As described above, the present invention is, for example, after molding a silicon rubber mold (41, 51) or a synthetic resin mold using a cemented carbide, such as tungsten carbide, and then using it to form the bottom plate of the PDP It can be seen that the technical idea.

This can be meaningful in two aspects. First, by grinding and dicing, the surface of the cemented carbide is formed into a groove shape corresponding to the diaphragm of the PDP to a high surface degree, and then the silicon rubber mold is formed. The fine silicon rubber mold can be formed, and by forming the partition wall of the bottom plate grass of the PDP using the flexible silicon rubber mold, the partition wall can be formed while following the waveiness of the surface. The present invention has an important meaning in these two aspects.

And within the scope of the basic technical spirit to which the present invention pertains, it will be possible for those skilled in the art to implement many other embodiments that can be modified. As such, the present invention should be construed in accordance with the appended claims.

According to this invention comprised as mentioned above, compared with the conventional partition wall formation method, it turns out that it is simple in process and can provide the lower plate glass with high productivity. That is, due to the simple method and process using the mold and the silicon rubber mold, it is possible to realize the cost reduction of the bottom plate glass manufacturing and to form a reliable partition wall.

Moreover, by using a silicon rubber mold, the advantage which can form a partition on any curved surface following the waveiness of the bottom plategrass can be expected.

Claims (12)

Linearly forming a plurality of grooves for forming a partition on an upper surface of a mold having a plane; Transferring a silicon rubber to an upper surface of the mold having the groove to form a first silicon rubber mold having a corresponding groove; And And forming a partition on the bottom plate glass by pressing the first silicon rubber mold onto the bottom plate glass coated with a predetermined thickness. Linearly forming a groove for forming a partition on an upper surface of a mold having a plane; Transferring a silicon rubber to an upper surface of the mold having the groove to form a first silicon rubber mold having a corresponding groove; Transferring a silicon rubber to an upper surface of the first silicon rubber mold to form a second silicon rubber mold having a corresponding groove; And And forming a barrier rib on the lower plate glass by pressing the second silicon rubber mold to the lower plate glass coated with the glass space at a predetermined thickness. Linearly forming a plurality of grooves for forming a partition on an upper surface of a mold having a plane; Transferring a synthetic resin onto an upper surface of the mold having the groove to form a first synthetic resin mold having a corresponding groove; And And forming a barrier rib on the lower plate glass by pressing the first synthetic resin mold onto the lower plate glass coated with a predetermined thickness. Linearly forming a groove for forming a partition on an upper surface of a mold having a plane; Transferring a synthetic resin onto an upper surface of the mold having the groove to form a first synthetic resin mold having a corresponding groove; Transferring a silicon rubber to an upper surface of the first synthetic resin mold to form a second synthetic resin mold having a corresponding groove; And And forming a barrier rib on the lower plate glass by pressing the second synthetic resin mold on the lower plate glass coated with the glass space at a predetermined thickness. The method of any one of claims 1 to 4, wherein the mold is made of a cemented carbide material. The method of any one of claims 1 to 4, wherein the grooves formed in the mold are formed by using a dicing saw blade. The method for forming a partition wall for a PDP according to claim 1 or 3, wherein the grooves formed in the mold are formed into grooves corresponding to the gaps between partition walls of the bottom plate grass. The method of claim 2 or 4, wherein the grooves formed in the mold are formed into grooves corresponding to the partition walls of the bottom plate grass. The method of claim 2, further comprising forming a release film by applying a release agent to an upper surface of the first silicon rubber mold. The partition wall forming method according to claim 1 or 2, wherein the mold is made of glass. The partition wall forming method for a PDP according to claim 1 or 2, wherein the mold is made of silicon carbide. The partition wall forming method for a PDP according to claim 3 or 4, wherein the synthetic resin is a fluorine resin.