KR19990085890A - PDP bulkhead manufacturing apparatus and manufacturing method - Google Patents

Abstract

The present invention is installed on the lower plate of the plasma display panel (hereinafter referred to as PDP), the partition panel manufacturing apparatus and method for manufacturing a PDP to form a partition wall to prevent discoloration at the same time to ensure the discharge space by adjusting the distance to the upper plate (Apparatus & Method of Barrier-lib Manufacturing for Plasma Display Panel)

According to the present invention, barrier ribs are formed by using barrier ribs and forming rollers having various ranges of viscosity, thereby reducing loss of barrier ribs and increasing utilization efficiency of the barrier ribs. As a result, the manufacturing process of the partition wall is simplified, and the manufacturing process time is also shortened.

In addition, the PDP bulkhead manufacturing apparatus and manufacturing method is to supply the partition material continuously to enable the continuous production of the partition wall and also to improve the accuracy of the partition wall to provide the effect of increasing the productivity of the PDP lower plate.

Description

PD manufacturing device and manufacturing method

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PDP bulkhead manufacturing apparatus and method for forming a partition installed on a lower plate of a plasma display panel (hereinafter referred to as a PDP). The present invention relates to a PDP bulkhead manufacturing apparatus and a manufacturing method capable of increasing the use efficiency of the material.

As the modern society is called the information society, the importance of visual information has increased and the diversification of its kind has been made remarkably according to the development and dissemination of information processing system.

As the most important man-machine interface of the image information, the display means is becoming an important era.

The display means can be directly applied to LCD, TV or AV monitors, computer displays, etc., which can be contributed to various video display devices in society, such as a flat-vision panel and a plasma display panel. It is thin and light, and is being developed in various ways to realize a large screen.

Among them, the PDP is generally generated when a discharge gas is injected between a thin upper plate and a lower plate 1 and 2 on which a plurality of transparent electrodes are formed, and a voltage is applied between the transparent electrodes to discharge them, as shown in FIG. 1. The phosphors 2a, 2b, and 2c coated on the surface of the lower plate 2 emit light by ultraviolet rays.

Each of the light emitting elements consisting of the plurality of transparent electrodes and the phosphors 2a, 2b, and 2c is formed of cells separated by barrier-libs 2 'and driven independently of each other, and is generally thin and wide. It has a matrix structure forming a plane.

Due to the matrix structure, the weight is light, the flattening of the screen and the implementation of a large screen are facilitated, and the advantages of eliminating color bleeding and focus deterioration can be overcome. The field of use is expanding as a display means.

Here, the partition wall 2 ′ is installed on the lower plate 2 of the PDP to adjust a distance from the upper plate 1 to secure a discharge space, and to prevent color mixing when the phosphors 2a, 2b, and 2c emit light. Be sure to However, the partition 2 'is the most difficult part of the formation of the PDP.

The partition wall 2 ′ is a wall between the discharge cells corresponding to the pixels, and a pattern having a width of about 20 μm to 30 μm is formed to about 200 μm in height. In addition, since only a pattern having a thickness of about 20 µm can be formed at a time, a barrier rib having a height of 200 µm is formed by printing a glass paste several to several tens of times.

A thick film printing method is used for forming the barrier rib 2 '. And Sand Blast method. In this case, the sand blasting method may make the height uniform so that the bulkhead without any shape distortion is perfectly formed.

Hereinafter, a description will be given with reference to the accompanying drawings, a method for manufacturing a partition wall for a PDP of the prior art by the sand blast method.

Referring to FIG. 2, a white back for preventing electrical insulation from the lower surface of the PDP 2 and oxidizing the upper portion of the lower surface of the PDP 2 and increasing reflection efficiency when the phosphors 2a, 2b, and 2c emit light. First process S1 of printing and drying the white back 3, a second process S2 of printing the electrode pattern 4 on the top surface of the white back 3, and the second process S2. The third step (S3) of applying a glass paste (5) to the printed electrode pattern (4) to have a predetermined thickness to print a number of times to print and dry, and the upper surface of the glass paste (5) Applying a resist (6) at regular intervals to excavate with sand to remove the portion where the resist (6) has not been applied (S4) and unbaked in the fourth process (S4) When the partition wall 2 'is formed, the resist 6 is removed to form a fifth process S5 of firing the partition wall 2'.

In Fig. 1, reference numerals 2a, 2b, and 2c denote phosphors (red), phosphors (green), and phosphors (blue).

Looking at the operation of the prior art PDP bulkhead manufacturing method with reference to the above-described configuration,

First, in the first process S1, the white bag 3 is printed on the lower plate 2 of the PDP and then dried. The white bag 3 prevents electrical insulation and oxidation of the upper plate of the PDP lower plate 2. In addition, when the phosphors 2a, 2b, and 2c emit light, the luminous efficiency may be increased by reflecting the light retreating in the rear direction to the front instead of advancing in the front direction.

Next, in the second process S2, the electrode pattern 4 is printed on the upper surface of the white back 3 at regular intervals. In the third process S3, the partition wall 2 is formed on the upper surface of the electrode pattern 4. The glass paste 5 is thickly applied by the height of ').

Here, since the glass paste 5 is formed to have a predetermined thickness limited in one coating, it is necessary to perform eight or more printing and drying processes to form the height of the partition wall 2 '.

When the glass paste 5 is applied through the third process S3, the resist 6 is printed and dried on the upper surface thereof in the fourth process S4, but the resist 6 is the glass paste. The upper surface of the glass paste 5 is formed at regular intervals so as to be located between the electrode patterns 4 on the lower surface of (5).

Subsequently, when the resist 6 is excavated using sand on the unprinted portion, only the partition 2 'of the unbaked state remains.

Finally, the partition wall 2 'is a fifth process S5 of firing after removing the resist 6 from the upper portion of the partition wall 2' in the unbaked state formed through the fourth process S4. Will be completed.

As a result, the PDP bulkhead manufacturing method according to the prior art maintains the height of the partition wall by applying glass paste through several times of printing and drying processes, and thus, the manufacturing process becomes complicated and at the same time, the manufacturing process takes a long time. .

In addition, the partition wall has a problem in that a loss of material is caused because the glass paste formed using sand exhibits a limit in improving the high accuracy of the partition wall, and at the same time, scrapes away the unnecessary material to be formed by sanding the glass paste. .

The present invention has been made in order to solve the problems of the prior art as described above, the object of the partition wall by forming the partition wall using a forming roller having a plurality of grooves having a predetermined viscosity and a predetermined size of the partition wall. An object of the present invention is to provide a barrier rib manufacturing apparatus and a manufacturing method for PDP, which can improve the accuracy and productivity of the PDP lower plate.

1 is a configuration diagram schematically showing a structure of a general PDP;

Figure 2a is a view showing the partition of the PDP according to the prior art as the flow of the manufacturing process,

2b is a flowchart illustrating a method of manufacturing a partition wall of a PDP according to the prior art;

3A is a configuration diagram showing a partition wall manufacturing apparatus for PDP according to the present invention;

Figure 3b is a view showing a forming roller in the barrier rib manufacturing apparatus of the PDP according to the present invention,

4 is a flowchart illustrating a method for manufacturing a partition wall for PDP according to the present invention.

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

10: rotating plate 20: rotating shaft

30: doctor blade 41: heat source supply unit

41a: heat source 42: hot air supply unit

42a: hot air outlet 42b: hot air outlet

42c: hot air cover 50: forming roller

P: pitch H: height

PDP bulkhead manufacturing apparatus of the present invention for achieving the above object is installed on the lower plate of the plasma display panel (hereinafter referred to as PDP) to adjust the distance from the upper plate to secure the discharge space and at the same time mixed color In the partition manufacturing apparatus for PDP to form a partition to prevent,

A planar rotary plate for casting the partition wall material manufactured in a slurry state to have a predetermined viscosity in the form of a tape, a rotating shaft for advancing the rotating plate while adjusting the speed according to the viscosity of the partition wall material, and A casting part for casting the partition wall material stored on the inner side of the rotating plate according to the moving direction of the rotating plate, and a heat generating part for generating heat to temporarily dry and completely dry the partition wall cast on the upper surface of the rotating plate; It characterized in that it consists of a forming roller formed with a plurality of grooves of a predetermined size along the outer peripheral surface to form the partition wall in the partition material temporarily dried by the heat generating unit.

PDP bulkhead manufacturing method of the present invention for achieving the above object is installed on the lower plate of the plasma display panel (Plasma Display Panel, hereinafter referred to as PDP) to adjust the distance to the upper plate to secure the discharge space and at the same time mixed color In the PDP partition manufacturing method for forming a barrier to prevent,

A first process of casting a partition wall material prepared in a slurry state to have a predetermined viscosity in a tape form to form a completely dried first green tape, and through the first process A second process of printing the electrode pattern by laminating the completed first green tape on the lower plate of the PDP; and secondly drying the barrier material in an unbaked state by casting the barrier material in a tape form and temporarily drying the tape. A third process of forming a green tape and a fourth process of laminating and baking the second green tape completed through the third process on an upper surface of the first green tape on which an electrode pattern is printed in the second process Characterized in that made.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the PDP bulkhead manufacturing apparatus and manufacturing method according to the present invention will be described in detail.

3 to 4, the barrier rib manufacturing apparatus for a PDP includes a rotating plate 10 having a planar shape in which a barrier member manufactured in a slurry state is cast in a tape form to have a predetermined viscosity, as shown in FIG. 3A, and Rotating shaft 10 at both ends for advancing the rotating plate 10 while adjusting the speed according to the viscosity of the partition wall material, and the partition wall material is stored in a certain amount at the same time and is charged again when a certain amount is consumed while continuously supplying the partition material Doctor blade 30 for casting the partition member on the upper surface of the rotating plate 10 in accordance with the traveling direction of the rotating plate 10, and partition wall member cast on the upper surface of the rotating plate 10 by the doctor blade 30. When hot air is generated on the heat source supply unit 41 or the upper surface of the rotating plate 10 having a plurality of heat sources 41a for generating heat at the lower surface of the rotating plate 10 to temporarily dry and completely dry Is a forming roller 50 in which a plurality of grooves of a predetermined size are formed along an outer circumferential surface to form the partition wall in the partition wall temporarily dried by the hot air supply part 42 and the heat source supply part or the hot wind supply parts 41 and 42. It is composed.

Here, the partition wall material is formed in a slurry state to have a glass ceramic (Glass-Ceramic) powder mixed with an organic binder and a solvent to have a viscosity of 500 ~ 4000cps.

In addition, the hot air supply unit 42 is a hot air inlet 42a through which hot air flows to dry the partition wall material cast on the upper surface of the rotating plate 10, and a steam generated while drying the partition wall material and a set temperature. Hot air outlet 42b for sucking hot air supplied above and discharging it to the outside, and hot air cover 42c formed above the rotating plate 10 to block the hot air outlet 42b so that the temperature of the hot air is uniform. It consists of.

On the other hand, when temporarily drying and completely drying the partition wall cast on the upper surface of the rotating plate 10 to use at least one of the heat source supply and hot air supply (41, 42).

The rotary shaft 20 and the rotary plate 10 are wound together with the rotary plate 10 on the rotary shaft 20 at the one end side, or the partition wall material coated on the upper surface of the rotary plate 10 is moved to a recovery unit. The rotating plate 10 may be moved to the rotating shaft 20 of the other end to be reused.

Referring to FIG. 4, a method for manufacturing a partition wall for PDP is described. First, a partition material manufactured in a slurry state to have a predetermined viscosity in a tape form is cast and completely dried by a heat source and hot air. A first process (S1) for forming a green tape and the first green tape completed through the first process (S1) is laminated on the lower plate of the PDP to print an electrode pattern on the upper surface Similarly to the second step S2 and the first step S1, after the barrier material is temporarily dried in a tape form, the barrier rib is formed to form a completely dried second green tape (S3). ) And a fourth process S4 of laminating the second green tape completed in the third process S3 to the first green tape on which the electrode pattern is printed in the second process S2 and firing. .

Looking at the operation of the PDP bulkhead manufacturing apparatus and method of the present invention with reference to the configuration as described above,

First, the barrier rib manufacturing apparatus for PDP mixes glass-ceramic powders with an organic binder and a solvent to prepare a barrier rib in a slurry state having a predetermined viscosity, and then stores a predetermined amount inside the doctor blade 30. Thereafter, when the rotating shaft 20 advances the rotating plate 10 while adjusting the speed according to the viscosity of the partition wall material, the doctor blade 30 is disposed on the upper surface of the rotating plate 10 according to the advancing direction of the rotating plate 10. The partition wall material is applied in the form of a tape.

In this case, the doctor blade 30 can be recharged and used again when a certain amount is completely consumed, thereby continuously supplying the partition material.

Next, the partition wall material coated on the upper surface of the rotating plate 10 by the doctor blade 30 is temporarily dried and completely dried using the heat source supply unit or the hot air supply units 41 and 42. At this time, the completely dried partition wall material is called the first green tape, and the temporarily dried partition material is called the second green tape.

In particular, the second green tape is completely dried using a heat source supply unit or hot air supply units 41 and 42 after forming the unbaked partition wall using the forming roller 50, and the first green tape is a lower plate of the PDP. Since the barrier material is laminated on the bottom surface of the PDP for electrical and electrical insulation, the partition material may be used to form the first green tape and the second green tape, thereby improving the utilization efficiency of the material.

Meanwhile, as shown in FIG. 3B, the forming roller 50 has a diameter of 200 mm, a pitch P of 0.15 to 0.50 mm, and a height H of 0.15 to 0,50 mm. However, the height (H) and the pitch (P) of the forming roller 50 is to be formed to an appropriate length to form the partition wall.

In addition, the hot air supply unit 42 is to dry to form the first and second green tape, a predetermined temperature together with steam or solvent vapor evaporated by the heat source supply unit 41 through the hot air outlet (42b) The hot air supplied above is sucked and discharged to the outside to maintain a constant temperature inside the hot air cover 42c.

Looking at the operation of the PDP bulkhead manufacturing method using the PDP bulkhead manufacturing apparatus, first, the doctor blade 30 in which the partition material is stored is the movement of the rotating shaft 20 on the upper surface of the rotating plate (10) According to the first step (S1) and casting the partition wall material in the form of a tape, the first green tape is completely dried using the heat source supply and hot air supply (41, 42) and the first process The first green tape completed through S1 is laminated on the bottom surface of the lower surface of the PDP, and a second process S2 of printing an electrode pattern on the upper surface thereof is performed.

Next, similarly to the first process (S1), the partition wall material is temporarily dried to form an unbaked partition wall, and then completely dried using the heat source supply unit or the hot air supply units 41 and 42 to form the second green. The second process (S3) to form a tape and the second process (S2) and the second process completed in the third process (S3) completed on the upper surface of the first green tape on which the electrode pattern is printed A fourth process (S4) of laminating and baking the green tape is performed.

As a result, in the conventional PDP bulkhead manufacturing apparatus and manufacturing method according to the present invention, a plurality of grooves having a predetermined size are formed on the outer circumferential surface so as to have a height and a gap between the partition walls, which are formed through several printing and drying processes. It is possible to continuously produce the barrier ribs through the printing and drying process of a smaller number of times than the prior art by temporarily forming the barrier ribs having various ranges of viscosity using a molding roller.

In addition, the present invention is to excavate the repeatedly applied material with sand to form the partition in the conventional case to complete the partition having a constant interval and height as shown in FIG. When used, even if not excavated, the bulkhead having a constant height and spacing is completed, so that it is not necessary to scrape the material, so the loss of material can be reduced.

In addition, the present invention forms a white bag stacked on the PDP lower plate by using the partition wall material to prevent electrical insulation and oxidation of the lower surface of the PDP and increase reflection efficiency when the phosphor emits light. The utilization efficiency of the partition wall material can be improved.

In the above-described PDP bulkhead manufacturing apparatus and manufacturing method as described above, the partition wall is formed by using the partition material and the forming roller having various ranges of viscosity, thereby reducing the loss of the partition material and increasing the utilization efficiency of the partition material. The printing and drying process, which has been repeated several times in the past, is reduced, thereby simplifying the manufacturing process of the partition wall and reducing the manufacturing process time.

In addition, the PDP bulkhead manufacturing apparatus and manufacturing method is capable of continuously producing the partition wall by supplying the partition wall material continuously, and improves the accuracy of the partition wall, thereby increasing the productivity of the PDP lower plate.

Claims (4)

In the PDP bulkhead manufacturing apparatus installed on the lower plate of the plasma display panel (hereinafter referred to as PDP) to form a partition wall to prevent the discoloration at the same time to ensure the discharge space by adjusting the distance to the upper plate, A planar rotary plate for casting the partition wall material manufactured in a slurry state to have a predetermined viscosity in the form of a tape, a rotating shaft for advancing the rotating plate while adjusting the speed according to the viscosity of the partition wall material, and A casting part for casting the partition wall material stored on the inner side of the rotating plate according to the moving direction of the rotating plate, and a heat generating part for generating heat to temporarily dry and completely dry the partition wall cast on the upper surface of the rotating plate; And a forming roller having a plurality of grooves of a predetermined size formed along an outer circumferential surface of the partition wall temporarily dried by the heat generating unit. The method of claim 1, The partition material is PDP partition wall manufacturing apparatus, characterized in that the glass ceramic (Glass-Ceramic) powder is mixed in an organic binder and a solvent to form a slurry to have a predetermined viscosity. The method of claim 1, The heat generating unit comprises a hot air supply unit for generating hot air from the upper surface of the rotating plate, and a heat source supply unit formed with a plurality of heat sources for generating heat from the lower surface of the rotating plate. In the manufacturing method of the PDP partition wall which is installed on the lower plate of the Plasma Display Panel (hereinafter referred to as PDP) to form a partition wall to prevent discoloration at the same time to ensure the discharge space by adjusting the distance to the upper plate, A first process of casting a partition wall material prepared in a slurry state to have a predetermined viscosity in a tape form to form a completely dried first green tape, and through the first process A second process of printing the electrode pattern by laminating the completed first green tape on the lower plate of the PDP; and secondly drying the barrier material in an unbaked state by casting the barrier material in a tape form and temporarily drying the tape. A third process of forming a green tape and a fourth process of laminating and baking the second green tape completed through the third process on an upper surface of the first green tape on which an electrode pattern is printed in the second process PDP bulkhead manufacturing method characterized in that made.