KR100406783B1 - Barrier rib manufacturing method and apparatus of a plasma display panel - Google Patents

Abstract

PURPOSE: A method and an apparatus are provided to allow for a mass production of substrates having a complicated barrier rib structure, while reducing manufacturing procedures and defective ratio. CONSTITUTION: A method comprises a step of producing a plate type substrate(100); a step of producing a block having a pattern same as the pattern of the barrier rib to be formed, and forming a barrier rib forming groove at the block in such a manner that the barrier rib forming groove has a depth deeper than the height of the barrier rib to be formed; a step of softening the block or the substrate by heating, and permitting the block to tightly contact the substrate; a step of forming a barrier rib by pressing the substrate and the block in the opposite direction such that one surface of the substrate is accommodated into the barrier rib forming groove; and a step of separating the block from the substrate.

Description

Barrier rib manufacturing method and apparatus for plasma display device and apparatus thereof

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a partition wall of a plasma display device and an apparatus thereof, and more particularly, to a method for manufacturing a partition wall for partitioning a discharge space of a plasma display device and an apparatus thereof.

Plasma display devices are devices that generate light by exciting fluorescent materials or special gases. That is, glow discharge occurs by applying a predetermined voltage to the electrode while the gas is charged between the two electrodes provided in the closed space, and excitation of the phosphor layer formed in a predetermined pattern by ultraviolet rays generated during the glow discharge. To form an image.

In the plasma display device as described above, a partition wall is formed between the upper and lower plates, and the discharge space has at least one pair of electrodes forming a kitchen discharge or an auxiliary discharge, although there are some differences depending on the type of plasma display device. Is formed. In the plasma display device, the partition wall is typically formed on the upper surface of the lower plate, and the formation method thereof is as follows.

1 shows a method of forming a partition on the lower plate, that is, the upper surface of the substrate by using a printing method.

As illustrated, an electrode layer 12 having a predetermined pattern is formed on the upper surface of the substrate 11, and a dielectric layer 13, which is an insulating layer, is formed on the upper surface of the substrate 11 on which the electrode layer 12 is formed. In addition, the screen 14 having the predetermined pattern, that is, the same pattern as the partition pattern, is closely adhered to the substrate on the upper surface of the dielectric layer 13, and the barrier material is repeatedly printed to a thickness of 10 to 15 μm, dried and fired, thereby partitioning the barrier rib 15. ).

As described above, the partition wall 15 is formed by repeating the printing process, the drying process and the firing process of the partition wall 15, so that the deformation of the partition wall pattern due to printing and heat treatment is not necessarily generated, and the productivity can be improved. I have a problem that I can't. In particular, in order to repeatedly print the partition wall, the substrate and the screen must be aligned, and the pattern of the partition wall becomes defective due to one misalignment during the repeated lamination process.

2A to 2C show another example of a method for forming a partition on a lower substrate.

First, as shown in FIG. 2A, considering the height of the barrier rib to be formed on the upper surface of the substrate 23 on which the electrode layer 21 and the dielectric layer 22 of the predetermined pattern are sequentially formed, the barrier rib layer 24 is formed to a predetermined thickness. Follow the steps to form. As shown in FIG. 2B, the anti-polishing mask 25 is formed on the barrier layer 24 using the photoresist method. Here, the anti-polishing mask 25 may be any material that is not polished by sand that is collided at high speed.

As described above, when the formation of the anti-polishing mask is completed, as shown in FIG. 2C, sand sprayed with high-pressure air or water is sprayed onto the upper surface of the barrier layer 24 so that the anti-polishing mask 25 is not formed. The barrier layer 24 is polished to form a discharge space. In the process performed as described above, the portion in which the discharge space is not formed, that is, not polished by the anti-polishing mask, becomes the partition 26 partitioning the discharge space.

Forming the partition wall 26 in the manner described above is complicated in the process for forming the anti-polishing mask 25, and since the partition material is removed in a fine powder state, it not only contaminates the surrounding environment but also adheres to the partition material. A separate cleaning process is needed to remove the sand. The method also takes a long time due to the formation of the partition wall 26.

The present invention has been made to solve the above problems, it is possible to improve the productivity according to the formation of the partition wall, and to provide a method for manufacturing a partition wall of the plasma display device and apparatus for reducing the distribution of the partition standard between the substrate. The purpose is.

1 is a cross-sectional view showing a conventional bulkhead manufacturing method,

2A to 2C are cross-sectional views showing another example of the method of manufacturing a plasma display element partition wall in the related art;

3a to 3e illustrate a method of manufacturing a plasma display device according to the present invention;

4 is a cross-sectional view showing a barrier rib manufacturing apparatus of a plasma display device according to the present invention;

5 is a cross-sectional view showing another embodiment of a plasma display device partition wall manufacturing apparatus according to the present invention;

6 is a cross-sectional view showing another embodiment of a plasma display device partition wall manufacturing apparatus according to the present invention;

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

30; Block 31;

40; Pneumatic supply means 50; Heating means

60; Pressurization

In order to achieve the above object, the present invention provides a barrier rib manufacturing method of a plasma display device for forming a barrier rib of a predetermined pattern on one side of the substrate, the substrate manufacturing step of manufacturing a plate-like substrate, the same as the barrier rib pattern to be formed A block manufacturing step of forming a partition forming groove of a pattern in the block, a pressing step of bringing the substrate into close contact with the block in which the partition forming groove is formed, and pressing the substrate and the block in a direction opposite to each other from at least one side of the substrate And a partition forming step of forming a partition by immersing a side surface into the partition forming groove and a separating step of separating the block and the substrate.

Another aspect of the present invention provides a substrate manufacturing step of manufacturing a substrate having a barrier layer by applying a barrier material on an upper surface of the plasma display device in a method of manufacturing a barrier rib of a plasma display device to form a barrier rib in a predetermined pattern on one side of the substrate. And a block manufacturing step of forming a partition forming groove having a same pattern as the partition pattern to be formed in the block, a pressing step of bringing the substrate into close contact with the block in which the partition forming groove is formed, and mutually connecting the substrate and the block from at least one side. A partition wall forming step of forming a partition wall by pressing one side of the substrate into the partition wall forming groove by pressing in an opposite direction; a separating step of separating the block and the substrate; and forming a partition wall material on which the pattern of the partition wall is completed. It includes a curing step of curing by firing.

In the barrier rib manufacturing apparatus of the present invention for implementing the barrier rib manufacturing method of the present invention, a barrier rib forming groove having the same pattern as the barrier rib pattern of the plasma display device is formed, and each barrier rib forming groove and a connection passage are formed at one side thereof;

It is characterized in that it comprises a pressure supply means connected to the connection passage to apply a predetermined pressure, and pressing means for pressing the substrate mounted on the block mounted on the block.

Another feature of the plasma display device partition wall fabrication apparatus according to the present invention is a partition wall fabrication apparatus of a plasma display device in which a partition wall of a predetermined pattern is formed in a partition wall layer on a substrate, wherein the partition wall forming grooves having the same pattern as the partition wall pattern are formed on the outer circumferential surface thereof. It is formed to include a mold to form a partition wall by immersing a portion of the partition layer in the partition wall forming grooves when pressed against the substrate.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A method of manufacturing a partition wall of a plasma display device according to the present invention is to form a partition wall positioned between an upper substrate and a lower substrate constituting a plasma display device to partition a discharge space.

In the method of forming the partition wall according to the present invention, as illustrated in FIGS. 3A to 3C, the step S1 of manufacturing the substrate 100 to manufacture the substrate 100 and the partition wall forming groove 121 having the same pattern as the partition pattern to be formed are performed. Block manufacturing step (S2) to form a block 120, and a heating step (S3) for heating the substrate 100 to soften the substrate. In the manufacturing of the substrate 100 by the step of manufacturing the substrate, a barrier rib having a predetermined height is formed by forming an address electrode 111 having a predetermined pattern on a plate member and applying a barrier material on the upper surface of the substrate on which the address electrode 111 is formed. This is achieved by forming layer 112. The formation of the partition layer on the plate member is performed by applying the partition material by thick film printing, roll coating or spin coating. The partition forming groove 121 formed in the block may be formed to the same depth as the height of the partition to be formed or deeply formed.

When the softening of the substrate 100 is completed as described above, as shown in FIGS. 3D and 4E, an adhesion step of closely contacting the substrate 100 to the block 120 may be performed, and the substrate and the block may face each other from at least one side thereof. By pressing in a direction to perform a partition forming step (S4) so that one side of the substrate is immersed in the partition forming groove 121, and performs a separation step (S5) for separating the substrate and the block is completed. In the forming of the partition wall, it is preferable that the softened substrate is easily immersed in the partition wall forming groove 121 by applying a vacuum pressure when the substrate 100 is pressurized to the block 120. It is preferable to apply a predetermined pressure to the groove 121 to facilitate separation.

In forming the barrier ribs on the substrate as described above, when the barrier ribs having a predetermined pattern are formed on the barrier rib layers 112 formed on the substrate 100, there are some differences depending on the material of the barrier rib layer 112. In the case of a mixture of the ceramic and the organic material having the thermoplastic, it comprises a curing step of baking and curing after the formation of the partition wall is completed.

4 shows an embodiment of a barrier rib manufacturing apparatus of the plasma display device according to the present invention.

As shown, a partition wall forming groove 31 having the same pattern as that of the partition wall is formed in a vertical direction from an upper surface of the block 30, and a connection connected to the partition wall forming groove 31 in the lower portion of the block 30. A passage 32 is formed. The connection passage 32 is formed by coupling the block member 30a having the connection passage 32 formed on the lower or side surface of the block 30. The arrangement of the partition wall forming grooves 31 formed in the block 30 is not limited to the above-described embodiment and may be modified in various forms according to the pattern of the partition wall to be formed in the substrate 100. The partition wall forming groove 31 formed in the block 30 is formed to have the same depth as the height to be formed or deeply regardless of the height of the partition wall. The block 30 is preferably made of a material having the same thermal expansion rate as the substrate 100 in consideration of the thermal expansion rate of the substrate 100 when the partition wall is formed.

In addition, a coating film coated with ceramic or Teflon is formed on the upper surface of the block 30 and the inner circumferential surface of the barrier rib forming groove 31 to facilitate separation of the substrate 100 and the barrier rib formed thereon.

The connection passage 32 is provided with a pressure supply means 40 for applying a vacuum pressure to the through hole 31 or a pressure higher than atmospheric pressure, the pressure supply means 40 is connected to the connection passage 32 and The first pump 41 for supplying a vacuum pressure and the second pump 42 for supplying a pressure higher than or equal to atmospheric pressure are connected in parallel by the connecting pipe 43 to be connected. On the side adjacent to the pump connected in parallel with the connecting pipe 43, first and second valves 44 and 45 for intermittently connecting the first and second pumps 41 and 42 and the connecting pipe are respectively. Is installed.

As described above, the block 30 on which the pressure supply means is mounted is provided with heating means 50 for softening the lower substrate 100 seated on the upper portion thereof. The heating means 50 includes a heater embedded in the block ( 51). The heating means 50 is preferably installed on the side adjacent to the block 30 in order to soften the substrate 100. The heating means is not limited to the above embodiments, and any heating means can be used as long as the substrate and the block 30 can be heated. For example, the substrate may be heated using hot air.

And the upper surface of the block 30 is provided with a pressing means 60 for pressing the substrate 100 for forming the partition wall against the block 30, the pressing means 60 is a pressure plate 61 having a smooth bottom surface. ) And an actuator 62 which is lifted with respect to the block 30 and fixed to the frame 63. In this case, it is preferable that the actuator uses a conventional pneumatic or hydraulic chamber holder.

In addition, the barrier rib forming apparatus of the plasma display device further includes alignment means for aligning the substrate in the block for the address electrode to be aligned between the barrier ribs when the address electrode is formed on the substrate.

The alignment means 70 detects and aligns capacitance between the address electrode and the block, and includes a first lead line 71 connected to the address electrode, a second lead line 72 connected to the block, and the first lead line 71. And a capacitance meter 73 for measuring capacitance between the address electrode and the block connected to the 1,2 lead wire. Another embodiment of the alignment means includes a mark formed on the substrate 100 and the block.

Another embodiment of the plasma display device partition wall manufacturing apparatus according to the present invention is to form a partition wall of a predetermined pattern on the partition layer 112 in which the address electrode 111 of the predetermined pattern is embedded, as shown in FIG. 5. The barrier rib forming groove 81 having the same pattern as the barrier rib pattern is formed to include a mold 80 to form a partition wall by immersing a part of the barrier rib layer into the barrier rib forming groove 81 when pressed against the substrate 100. . In this case, the mold may be formed in a drum shape as shown in FIG. 6, and a partition wall forming groove 81 ′ may be formed on an outer circumferential surface thereof. And it is preferable to form a coating film coated with a ceramic or Teflon on the surface of the mold (80 ') to facilitate separation from the substrate, the mold is provided with the alignment means as described above for alignment with the substrate desirable.

The operation of the barrier rib manufacturing apparatus of the plasma display device according to the present invention configured as described above and the barrier rib manufacturing method through the action will be described in detail as follows.

In order to form a partition on a substrate by using the barrier rib manufacturing apparatus, the substrate 100 is first placed on the block 30. When the substrate 100 on which the address electrode is formed is placed on the block 30, the address electrodes are aligned by alignment means such that the address electrodes are positioned between the partition wall forming grooves 31. Alignment of the substrate 100 and the block is performed in that the capacitance is maximized between the block and the substrate 100 by the capacitance measuring instrument by transferring the substrate 100 with respect to the block 30. That is, when the distance between the address electrode and the barrier rib forming grooves 31 becomes the maximum, the distance between the address electrode and the block becomes the closest distance, so that the capacitance becomes the maximum, and the address electrode is the barrier rib forming groove. It is located between 31.

When the alignment of the substrate with respect to the block 30 is completed as described above, the substrate 100 is softened by heating the block and the substrate using heating means. When the substrate 100 is placed on the upper surface of the block 30 in a softened state by using a separate heating means, the time for softening the substrate 100 can be shortened.

When the substrate 100 is softened in the block 30 as described above, the first pump 41 is driven while the first valve 44 is opened and the second valve 45 is closed. 31) Apply vacuum pressure. Then, the actuator 62 of the pressing means 60 is operated to press the softened substrate 100 to the block 30 side by the pressing plate 61 installed on the rod thereof. In this way, the softened substrate 100 is deformed, and a partition layer formed on a portion of the lower surface or the substrate is introduced into the partition formation groove 31 to form a partition wall.

When the formation of the partition wall is completed, the first valve 44 is shut off and the second valve 45 is opened. The second pump 42 is operated to apply pressure above atmospheric pressure to each of the through holes 31 to form the partition wall. The substrate 100 is separated from the block 30 by allowing the partition wall of the substrate 100 introduced into the groove 31 to be separated from the through hole. In the process of forming the substrate as described above, the height of the partition wall is determined by the partition wall formation groove when the depth of the partition wall formation groove is limited to the height of the partition wall, and the pressurization when the height is not limited by the partition wall formation groove. The height of the partition wall can be adjusted by the pressing force by means.

When the partition wall is formed and the substrate 100 is separated from the block 30, the substrate 100 is cooled and cured or baked and cured.

As shown in FIG. 5, when the partition wall is formed using a mold, the mold is brought into close contact with the upper surface of the partition layer of the substrate, and then pressurized to form a partition wall by allowing a part of the partition layer to enter the partition formation groove. The mold is separated and then cured.

As described above, the barrier rib manufacturing method and apparatus of the plasma display device according to the present invention have the following effects.

First: mass production of substrates with complex bulkhead structures is possible.

second; The height of the bulkhead can be adjusted arbitrarily.

Third, the process can be shortened compared to the conventional printing method.

fourth; Since the same pattern is not laminated and formed, defects can be fundamentally reduced due to misalignment of the mask and the substrate as in the prior art.

Fifth: It is possible to prevent the particulates of the partition member from being scattered to the surroundings during the polishing to pollute the surrounding environment.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and the present invention may be modified in various embodiments by those skilled in the art within the technical scope of the present invention.

Claims (22)

In the manufacturing method of the partition wall of the plasma display device to form a partition wall of a predetermined pattern on one side of the substrate, A substrate manufacturing step of manufacturing a plate-shaped substrate, A block manufacturing step of forming a partition forming groove in a block which is the same pattern as a partition pattern to be formed and is formed deeper than the height of the partition to be formed; A pressing step of bringing the block into close contact with the substrate while heating and softening the block or the substrate on which the barrier rib forming groove is formed; A barrier rib forming step of forming a barrier rib by pressing the substrate and the block in at least one side to face each other so as to be immersed in the barrier rib forming groove; And a separating step of separating the block and the substrate. The method of claim 1, wherein the pressing step further comprises applying a vacuum pressure to the barrier rib forming groove when the substrate and the block are pressed in the mutually opposite directions such that the softened barrier rib is immersed in the barrier rib forming groove. A barrier rib manufacturing method of a plasma display device. The plasma separation method of claim 1, wherein the separating step further comprises applying a pressure to the barrier rib forming groove when the substrate and the block are separated so that the barrier rib is separated from the barrier rib forming groove of the block by the pressure. Method of manufacturing partition walls of display elements. The method of claim 1, wherein the fabricating of the substrate comprises forming an address electrode on the plate member, and forming a barrier layer on an upper surface of the plate member on which the address electrode is formed. Method of manufacturing a plasma display device, characterized in that it comprises a step. The method of claim 1, further comprising an alignment step of aligning the block and the substrate. In the manufacturing method of the partition wall of the plasma display device to form a partition wall of a predetermined pattern on one side of the substrate, A substrate manufacturing step of manufacturing a substrate having a partition layer formed on the upper surface of the plate member by the partition wall material; A block manufacturing step of forming a partition forming groove in a block which is the same pattern as a partition pattern to be formed and is formed deeper than the height of the partition to be formed; A pressing step of bringing the block into close contact with the substrate while heating and softening the block or the substrate on which the barrier rib forming groove is formed; A barrier rib forming step of forming a barrier rib by pressing the substrate and the block in at least one side to face each other so that the barrier rib layer is immersed in the barrier rib groove; A separation step of separating the block and the substrate; And a hardening step of firing and hardening the partition layer on which the pattern of the partition pattern is completed. 7. The method of claim 6, wherein the partition wall is made of a mixture of ceramic and glass. In the barrier rib manufacturing apparatus of the plasma display device to form a barrier rib of a predetermined pattern on one side of the substrate, A block forming groove having a same pattern as the pattern of the partition wall is formed, and on one side the block forming grooves and connecting passages are formed; A pressure supply means connected to the connection passage to apply a predetermined pressure; And a pressurizing means installed on the block to pressurize the substrate mounted on the block. 9. The partition wall manufacturing apparatus of claim 8, wherein a heating means for softening the substrate by heating the block is provided in the block. 9. The partition wall manufacturing apparatus of claim 8, wherein the pressurizing means includes a pressurizing plate having a lower surface and a actuator for raising and lowering the pressurizing plate. The method according to any one of claims 8 to 10, The pressure supply means includes a first pump for supplying a vacuum pressure by a connection pipe connected to the connection passage, a second pump for supplying a pressure higher than atmospheric pressure, and a plurality of valves installed in the connection pipe to control supply of pressure. An apparatus for manufacturing a partition wall of a plasma display device, characterized in that it comprises a. The apparatus of claim 8, wherein a coating film coated with ceramic or Teflon is formed on the upper surface of the block and the inner circumferential surface of the through hole. The barrier rib manufacturing apparatus of claim 8, wherein a depth of the barrier rib forming groove formed in the block is equal to a height of a wall to be formed in the substrate. 10. The barrier rib manufacturing apparatus of claim 8, wherein a depth of the barrier rib forming groove formed in the block is greater than a height of a wall to be formed in the substrate. 20. The substrate of claim 19, wherein the substrate comprises a plate member, an address electrode layer formed in a predetermined pattern on an upper surface of the plate member, and a partition layer formed on an upper surface of the plate member on which the address electrode layer is formed. Apparatus for manufacturing plasma display device. The method according to any one of claims 8, 9 or 10, Barrier ribs of the plasma display producing apparatus assistant, characterized in that the further include an alignment means for aligning the substrate relative to the block in the block and the substrate. 17. The barrier rib manufacturing apparatus of claim 16, wherein the alignment means comprises a mark formed on opposite surfaces of the substrate and the block. 17. The plasma display device as claimed in claim 16, wherein the alignment means comprises a capacitance measuring device measuring capacitance between the address electrode formed on the substrate and the block and indicating an alignment state at the maximum point of the capacitance. Bulkhead manufacturing equipment. 13. The partition wall manufacturing apparatus of claim 8, 9 and 12, wherein the block is made of the same material as that of the substrate. In the partition manufacturing apparatus of the plasma display element which forms a partition of a predetermined pattern in a partition layer in a board | substrate, The partition wall of the plasma display device, characterized in that the partition wall forming grooves having the same pattern as the partition pattern is formed on one side to form a partition wall by immersing a part of the partition wall into the partition wall forming grooves when pressed against the substrate. Manufacturing equipment. The method of claim 1, The mold of claim 1, wherein the mold is formed in a drum shape having a partition wall forming groove formed on an outer circumferential surface thereof. 22. The barrier rib manufacturing apparatus of claim 20 or 21, wherein a coating film coated with ceramic or teflon is formed on the surface of the mold.

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