JP2002008544A - Plasma display and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma display and a manufacturing method of the same which can increase a brightness of phosphor by increasing surface area substantially, without increasing the area occupied by phosphor, to obtain a brighter luminous surface with a certain dosage of ultraviolet ray. SOLUTION: For the plasma display, a transparent substrate 21 and a transparent substrate (not shown) are arranged facing with each other, and a plurality of barrier ribs 23 are formed between those substrates, and each concave parts separately formed by those barrier ribs 23 is made to be a discharge cell 26, and phosphor 27 is formed at inner surface of each discharge cells 26, and an unevenness is formed at the surface of bottom part of the phosphor 27b and/or the side part of the phosphor 27a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display and a method of manufacturing the same, and more particularly, to a plasma display suitable for use as a large-screen, high-quality display device for high-definition television and a method of manufacturing the same.

[0002]

2. Description of the Related Art In recent years, a plasma display (PDP) has been used as a large-screen, high-quality display device for hi-vision.
Is attracting attention. This plasma display has various features such that a natural gradation display is obtained, color reproducibility and responsiveness are good, and the size can be increased relatively inexpensively. Figure 1
FIG. 1 is an exploded perspective view showing a conventional plasma display, which is an example of an AC plasma display (AC-PDP). In this plasma display, two glass substrates (transparent substrates) 1 and 2 are arranged opposite to each other, and a plurality of stripe-shaped transparent substrates are provided on one main surface of the front glass substrate 1 on the side facing the glass substrate 2. Are formed in parallel with each other, these transparent electrodes 3, 3,... Are covered with a transparent dielectric layer 4, and the dielectric layer 4 is further covered with MgO.
A transparent protective film 5 is formed.

On the other hand, one main surface of the rear glass substrate 2 on the side facing the glass substrate 1 is provided with the above-described transparent electrodes 3 and 3.
A plurality of stripe-shaped address electrodes 6, 6,... Are formed so as to be orthogonal to 3, 3,.
Are covered with a dielectric layer 7 having a high reflectivity, and on this dielectric layer 7 are parallel to the address electrodes 6, 6,.
A plurality of partition walls 8, 8,... Located between the address electrodes 6, 6,... Are provided, and the partition walls 8, 8,. ,
... are formed. The phosphors 10, 10,... Corresponding to the three primary colors R, G, B (red, green, blue) are formed inside these discharge cells 9, 9,. Then, the two glass substrates 1 and 2 facing each other are put together, and a mixed gas such as Ne-Xe or He-Xe using Xe resonance radiation of 147 nm is sealed in each discharge cell 9, 9,. In this state, the periphery is sealed with a seal glass or the like.

The transparent electrodes 3, 3,... And the address electrodes 6, 6,... Are respectively drawn out to the outside, and are selectively discharged by selectively applying a voltage to the terminals connected thereto. A discharge is generated between the electrodes 3, 6 in the cells 9, 9,..., And the discharge causes the excitation light from the phosphors 10, 10,... In the discharge cells 9, 9,. Has become. The light emitting surface at this time is the discharge cell 9,
The surface portions of the phosphors 10, 10,.

Next, a method of manufacturing the plasma display will be described. First, ITO (Indium Tin Oxi) is formed on one main surface of the flat glass substrate 1 by screen printing or the like.
de) or the like is applied in the form of a stripe, and then baked at a predetermined temperature to form the stripe-shaped transparent electrodes 3,3.
... Next, a dielectric material is applied on the glass substrate 1 on which the transparent electrodes 3, 3,... Are formed, and then fired at a predetermined temperature to form a transparent dielectric layer 4. further,
A protective film material mainly composed of MgO or the like is applied on the dielectric layer 4 and then fired at a predetermined temperature to form a transparent protective film 5.
And

On one main surface of the flat glass substrate 2,
A conductive paste containing silver (Ag) as a main component is applied by a screen printing method or the like, and then fired at a predetermined temperature to form a stripe-shaped address electrode 6 orthogonal to the transparent electrodes 3.
6, ... Next, a dielectric material having high reflectance is applied to the address electrodes 6, 6,... And the entire surface of the glass substrate 2, and then baked at a predetermined temperature to form a dielectric layer 7 having high reflectance. Next, a barrier rib material is applied to the entire surface of the dielectric layer 7 using a screen printing method or a roll coater method, and then dried. Next, a pattern is formed on the partition material with a photoresist such as a dry film resist (DFR), and thereafter, the partition material other than the pattern is removed by a sandblast method or the like, and baked at a predetermined temperature to obtain a dielectric material. The address electrodes 6, 6,
Are formed in a predetermined shape located between.

Here, the dielectric material is hard to be cut by the sand blast method, for example, the hardness becomes higher than the partition walls 8, 8,... By firing. In addition, the partition material is
It is a material that can be easily cut by sandblasting, for example, by minimizing the amount of organic substances as a binder for maintaining the shape after coating and drying. As described above, the partition 8,
The groove-shaped discharge cells 9, 9, which are spaces for performing gas discharge, are formed by 8,.

Next, the three primary colors R, G, B (red, green,
By applying a paste-like phosphor material corresponding to (blue), followed by drying and baking, a solvent, an organic binder, and the like contained in the phosphor material are spattered to solidify the phosphor 1
0, 10,... Then, these glass substrates 1
2 are opposed to each other and the glass substrates 1 and 2 are stuck together.
Ne-Xe, He-Xe inside each of the discharge cells 9, 9,...
And the surroundings are sealed with a seal glass or the like. As described above, a plasma display having predetermined characteristics can be obtained.

In the above-mentioned sand blast method, the particle size is 20 μm to 30 μm on the partition wall material on which the pattern is formed.
By spraying powder such as glass beads or calcium carbide to a certain extent, the partition wall material at the portion where the pattern is formed is left and the partition wall material at the portion where the pattern is not formed is scraped off. In this sandblasting method,
Since the partition material under the pattern is not cut by the patterned DFR or the like formed on the partition material, the partition material at the portion where the pattern is formed remains. Also, after the partition material other than the portion under the pattern is cut, the dielectric layer 7 having a high reflectivity is exposed. However, the surface of the dielectric layer 7 is baked and has a higher hardness than the partition material. , The cutting stops at the surface of the dielectric layer 7, and the partition walls 8, 8,... Are formed.

[0010]

Incidentally, in the conventional plasma display, since the surface of the dielectric layer 7 is flat, the phosphors 10 and 10 formed on the dielectric layer 7 are not provided.
Since the surfaces of 10,... Are also flat along the dielectric layer 7,
There is a problem that the brightness of the phosphors 10, 10,... Is low, so that the screen cannot be made brighter. In order to increase the brightness of the phosphors 10, 10,..., The surface area of the phosphors should be increased. However, due to the recent demand for smaller and thinner pixels, the size of the discharge cells is further reduced. , Phosphor 10,
There is also a limit in increasing the surface area of 10,.

The present invention has been made in view of the above circumstances, and can increase the luminance of a phosphor by substantially increasing the surface area without increasing the area occupied by the phosphor. As a result, an object is to provide a plasma display capable of obtaining a brighter screen even with the same amount of ultraviolet light, and a method for manufacturing the same.

[0012]

In order to solve the above problems, the present invention employs the following plasma display and a method of manufacturing the same. That is, in the plasma display according to the first aspect, a pair of transparent substrates are disposed to face each other, a plurality of partitions are formed between the transparent substrates, and each concave portion defined by these partitions serves as a discharge cell. In a plasma display in which a phosphor is formed on the inner surface of each discharge cell, irregularities are formed on the surface of the bottom surface and / or the side surface of the phosphor.

In this plasma display, the unevenness is formed on the bottom surface and / or the side surface of the phosphor, which has been conventionally flat, so that the area occupied by the phosphor in the discharge cells can be reduced with a simple structure. It is possible to increase the effective surface area without increasing it. In other words, in the conventional flat shape, the surface area of the phosphor formed on the opposing side surfaces between the partition walls and on the bottom dielectric layer between the partition walls is an effective fluorescent area,
In the present invention, the surface area of the bottom surface and / or the side surface is increased by forming irregularities on the surface of the bottom surface and / or the side surface of the phosphor, and the entire surface area including the increased portion is effective fluorescent light. Area. Thereby, the luminous efficiency of the phosphor increases, and the luminance increases. As a result, a brighter screen can be obtained with the same amount of ultraviolet light.

According to a second aspect of the present invention, there is provided a plasma display comprising:
2. The plasma display according to claim 1, wherein the irregularities are corrugated. In this plasma display, the effective surface area of the phosphor can be further increased by forming corrugations on the surface of the bottom and / or the side of the phosphor.

According to a third aspect of the present invention, there is provided a plasma display.
3. The plasma display according to claim 1, wherein irregularities are formed in regions corresponding to the discharge cells on the surface of one of the transparent substrates, and the phosphor is formed on these irregularities. . With this plasma display, the same operation as the plasma display according to the first aspect can be obtained.

That is, in this plasma display, by forming irregularities on the surface of the transparent substrate corresponding to each of the discharge cells, the irregularities are also formed on the surface of the bottom surface of the phosphor formed on the region. Is formed, and the surface area of the bottom portion increases, and the entire surface area including the increased portion becomes an effective fluorescent area. Thereby, the luminous efficiency of the phosphor increases, and the luminance increases. As a result, a brighter screen can be obtained with the same amount of ultraviolet light.

According to a fourth aspect of the present invention, there is provided a plasma display comprising:
4. The plasma display according to claim 1, wherein the partition has a corrugated cross section parallel to the surface of the transparent substrate. In this plasma display, by making the cross section of the partition wall parallel to the surface of the transparent substrate into a wavy shape, the surface area of the phosphor formed on the side surface of the partition wall increases, and the entire surface area including the increased portion is reduced. This is an effective fluorescent area. Thereby, the luminous efficiency of the phosphor increases, and the luminance increases. As a result, a brighter screen can be obtained with the same amount of ultraviolet light.

According to a fifth aspect of the present invention, there is provided a plasma display comprising:
4. The plasma display according to claim 1, wherein irregularities are formed on side surfaces of the partition wall. In this plasma display, the same operation as the plasma display according to the fourth aspect can be obtained.

That is, in this plasma display, by forming irregularities on the side surfaces of the partition, irregularities corresponding to the irregularities are also formed on the surface of the phosphor formed on the side surfaces. The surface area of the side of the body increases, and the entire surface area including the increased portion becomes an effective fluorescent area. Thereby, the luminous efficiency of the phosphor increases, and the luminance increases. As a result, a brighter screen can be obtained with the same amount of ultraviolet light.

According to a sixth aspect of the present invention, in the method for manufacturing a plasma display, a pair of transparent substrates are disposed to face each other, a plurality of partitions are formed between the transparent substrates, and each of the recesses defined by these partitions is connected to a discharge cell. In a method of manufacturing a plasma display, wherein a phosphor is formed on the inner surface of each of these discharge cells, a region corresponding to each of the plurality of discharge cells on the surface of one of the transparent substrates is cut or stamped to form a bottom surface. Form concaves and convexes, and form the phosphor on the inner surface of these concaves.

In this method of manufacturing a plasma display, a region corresponding to each of the plurality of discharge cells on the surface of one of the transparent substrates is cut or stamped to form a concave portion having a concave and convex bottom surface. If the phosphor is formed, irregularities corresponding to the irregularities are also formed on the surface of the phosphor, and the effective surface area of the phosphor is increased by a simple process without increasing the area occupied by the phosphor in the discharge cells. Can be greatly increased.

According to a seventh aspect of the present invention, in the method for manufacturing a plasma display according to the sixth aspect, a partition layer for forming the partition is formed on a surface of the transparent substrate, and A region corresponding to each of the discharge cells is cut or stamped to form a concave portion having a concave and convex bottom surface.

In this method of manufacturing a plasma display, a partition layer for forming the partition is formed on the surface of the transparent substrate, and regions of the partition layer corresponding to the discharge cells are cut or stamped to form a bottom surface. Form a concave and convex portion, the effective surface area can be greatly increased by a simple process without increasing the area occupied by the phosphor in the discharge cell. In addition, since a concave portion having a concave and convex bottom surface is formed in a region corresponding to each of the discharge cells of the partition layer, it is possible to collectively form the concave portion having a concave and convex bottom surface and form the concave portion. It is not necessary to prepare a separate process.

According to a eighth aspect of the present invention, there is provided a plasma display manufacturing method according to the sixth or seventh aspect, wherein the partition is formed on one of the transparent substrate and the partition layer. Pattern, and a concavo-convex forming pattern independent of the partition wall pattern and having a width smaller than the width of the partition wall pattern, and then cutting or stamping the transparent substrate or the partition wall layer using these patterns. The transparent substrate or the partition layer is formed with a plurality of partitions and a concave portion having an uneven bottom surface.

In this method of manufacturing a plasma display, the pattern for forming concavities and convexities is narrower and independent of the pattern for partitioning, so that the transparent substrate or the partitioning layer is cut using a sandblast method. Then, first, the surface of the transparent substrate or the partition layer that is not covered with the pattern for forming unevenness is cut. Since the concavo-convex pattern is skipped during the cutting, the surface of the transparent substrate or the partition layer on which the concavo-convex pattern has been formed is also cut thereafter. Thereby, it is possible to easily form unevenness on the surface of the transparent substrate or the partition layer where the pattern for forming unevenness is formed is high and the portion where the pattern is not formed is low.

According to a ninth aspect of the present invention, in the method for manufacturing a plasma display according to the eighth aspect, a plurality of the concavo-convex forming patterns are formed along an extending direction of the partition wall pattern. It is characterized by the following. In this method for manufacturing a plasma display, by forming a plurality of the concavo-convex formation patterns along the extending direction of the partition wall pattern, the unevenness having a plurality of peaks between the partition walls along the extending direction is formed. A concave portion is formed as a bottom surface.

According to a tenth aspect of the present invention, in the method of the eighth or ninth aspect, the partition pattern is corrugated. In this method for manufacturing a plasma display, the partition pattern is corrugated,
It is easy to process the cross section of the partition into a corrugated shape with respect to the transparent substrate or the partition layer. Thereby, the side surface of the partition can be processed into a corrugated shape, and the surface area of the phosphor formed on the side surface of the partition can be easily increased.

[0028]

DETAILED DESCRIPTION OF THE INVENTION In the present invention, a plurality of partitions are formed between a pair of transparent substrates opposed to each other, and each recess defined by these partitions is used as a discharge cell, and the inner surface of each of these discharge cells is formed. The present invention relates to a plasma display on which a phosphor is formed and a method of manufacturing the same, and first to fifth embodiments will be described below with reference to the drawings. In addition,
The plasma display of the present invention is characterized by a rear-side glass substrate, and the front-side glass substrate has exactly the same configuration as the conventional one. Therefore, in the first to fifth embodiments, the rear-side glass substrate is used. The explanation will be focused on. In these embodiments, components identical to those in the related art are denoted by the same reference numerals, and description thereof is omitted.

[First Embodiment] A plasma display according to a first embodiment of the present invention and a method for manufacturing the same will be described with reference to the drawings. FIG. 1 is a sectional view showing a glass substrate (transparent substrate) on the back side of the plasma display, and FIG.
1 is a cross-sectional view taken along the line AA in FIG. 1. In these figures, reference numeral 21 denotes a rear glass substrate (transparent substrate).
A plurality of stripe-shaped address electrodes 6 mainly composed of g, Ag-Pd or the like are formed. These address electrodes 6, 6,... Are configured to be orthogonal to the transparent electrodes 3, 3,.

These address electrodes 6, 6,... Are covered with a dielectric layer 22 having a high reflectance, and on the dielectric layer 22, the address electrodes 6, 6,. Are provided on both sides of the electrodes 6, 6,..., Respectively.
.. Are left along the extending direction of the partitions 23 on the bottom of the region sandwiched between the dielectric layer 3 and the dielectric layer 22, that is, on the upper surface of the dielectric layer 22. The partition wall material remaining portion 25 has a corrugated cross section along the direction in which the partition walls 23, 23 extend on its surface, and is used for forming the partition walls 23, 23 by cutting the partition wall material by sandblasting. It is left on the dielectric layer 22.

The partition walls 23, 23 and the partition wall remaining portion 25,
Each of the recesses defined by the dielectric layer 22 in which 25,... Are left is a groove-shaped discharge cell 26 which is a space for performing gas discharge. The three primary colors R, G, B (inside the discharge cells 26, 26,..., That is, on the side surfaces of the partition walls 23, 23, and on the dielectric layer 22 where the partition wall material remaining portions 25, 25,. Phosphors 27 and 2 corresponding to red, green and blue)
7,... Are formed. This phosphor 27 is used for the partition 23.
Phosphor side portion 27a formed on the side surface of discharge cell 2
6 and a phosphor bottom portion 27b formed on the dielectric layer 22.

Since the side surface of the partition wall 23 is flat, the surface of the phosphor side portion 27a formed on the side surface is also flat, but the dielectric layer 22 in which the partition wall material remaining portions 25, 25,.
The cross section of the surface along the extending direction of the partition walls 23 has a wavy shape, so that the surfaces of the remaining partition wall members 25, 25,... And the phosphor bottom 27b formed on the dielectric layer 22 also have a wavy shape. Be shaped. Then, the glass substrate 21 and the glass substrate 1 are put together, and the discharge cells 26, 6,.
Ne-Xe, He- using 7 nm Xe resonance radiation
In a state where a mixed gas such as Xe is sealed, the periphery is sealed with a seal glass or the like.

The address electrodes 6, 6,... And the transparent electrodes 3, 3,... Are respectively drawn out to the outside, and by selectively applying a voltage to the terminals connected to them,
A discharge is selectively generated between the electrodes 3, 6 in the discharge cells 26, 26,..., And this discharge causes the discharge cells 26, 26,.
The excitation light from the phosphors 27, 27,... In the. The light emitting surface at this time is the surface of the phosphors 27, 27,... Facing the discharge cells 26, 26,.

Here, if the shape of the discharge cells 26, 26,... Is, for example, a narrow groove shape (discharge cells 9, 9,. ,
, Flat side surfaces facing each other, and these partition walls 8,
The surface area of the phosphors 10, 10,... Formed on the flat bottom surface (the surface of the dielectric layer 7) formed at the bottom between 8,.

On the other hand, in the plasma display of the present embodiment, the effective surface area of the phosphor 27 is determined by the flat surface area of the phosphor side 27 a formed on the side surface of the partition wall 23 and the effective surface area of the discharge cell 26. .. And the corrugated surface area of the phosphor bottom 27b formed on the dielectric layer 22. The increase in the effective surface area of the phosphor 27 is due to the phosphor bottom 27b.
The effective surface area of the phosphor can be increased because the actual surface area is the part excluding the area occupied by the phosphor bottom 27b. Therefore, in the plasma display of the present embodiment, the effective surface area can be increased without increasing the occupied area of the phosphor 27, and as a result, the luminance can be improved as compared with the related art. .

Next, a method of manufacturing the plasma display will be described with reference to FIG. First, as shown in FIG. 3A, a conductive paste 31 containing Ag, Ag-Pd, or the like as a main component is printed on the entire electrode forming region on the surface of the glass substrate 21 by a screen printing method. At this time, the thickness of the conductive paste 31 is adjusted to be about 5 to 10 μm. Then, the conductive paste 31 is heated at 150 ° C. for 1 hour.
Heat for about 0 minutes to dry, expose (400 mJ / cm 2) and develop (Na 2 CO 3 solution) with the desired electrode pattern, then bake at 550 ° C. for 10 minutes, and stripes perpendicular to transparent electrodes 3, 3,. Address electrodes 6,
6, ...

Next, a dielectric material 32 having a high reflectivity is applied to the entire surface of the address electrodes 6, 6,... And the glass substrate 21, and then fired at a predetermined temperature to form a dielectric layer 22 having a high reflectivity. The dielectric material 32 is formed by firing the partition walls 23,
23,... It is preferable that the material is hard to be cut by the sandblasting method, for example, the hardness becomes higher. Next, a barrier rib material is applied to the entire surface of the dielectric layer 22 using a screen printing method or a roll coater method, and then dried to form the barrier layer 33. The partition wall material is preferably a material that is easily cut by sandblasting, for example, by minimizing the amount of an organic substance as a binder for maintaining the shape after coating and drying.

Next, a photoresist such as a sand blast resistant dry film resist (DFR) is patterned on the partition layer 33. This pattern is shown in FIG.
As shown in FIG. 5, a stripe-shaped partition pattern 3 for forming a partition by cutting a portion other than the partition of the partition layer 33.
, 34,.. And the partition wall layer 33 between the partition wall patterns 34, 34,. 34, a stripe-shaped corrugated pattern (pattern for forming concavities and convexities) 35 formed so as to be independent and orthogonal to the pattern 34 and having a width smaller than the width of the partition wall pattern 34. Here, as the DFR, for example, ORDYL
Exposure (about 300m) using BF405 (manufactured by Tokyo Ohka)
J / cm 2) and development (0.3% solution of Na 2 CO 3) to obtain a pattern having sandblast resistance.

Then, using the partition wall pattern 34 and the corrugation forming patterns 35, 35,... As a mask, an abrasive (WA # 80) using a sand blasting machine (manufactured by Fuji Seisakusho).
0) is sprayed on the surface of the partition layer 33 to cut the partition layer 33. In this cutting step, first, as shown in FIG. 3B, a surface portion of the partition layer 33 not covered with the partition pattern 34 and the corrugated pattern 35 is cut.

Since the corrugation forming pattern 35 is narrower than the partition wall pattern 34, the corrugation forming pattern 35 having a smaller width is skipped during cutting as shown in FIG. 3 (c). In addition, the surface of the partition layer 33 on which the corrugation forming pattern 35 is formed is also cut, and a portion corresponding to the corrugation forming pattern 35 is formed on the dielectric layer 22 at the top, and the other portions are formed from the top. The corrugated partition wall materials 33a, 33a,... Which are formed as inclined surfaces are left.

Thereafter, the partitioning pattern 34 is removed, and then baked at a predetermined temperature, so that a predetermined shape of the partitioning wall 23, 23 is formed on the dielectric layer 22, as shown in FIG.
, And the partition material remaining portions 25, 25,. , And the corrugated partition wall material remaining portions 25, 2
The region surrounded by the dielectric layer 22 on which the 5,... Are formed becomes the groove-shaped discharge cells 26 which are spaces for performing gas discharge.

Next, the three primary colors R, G, B (red,
Green, blue)
Thereafter, by drying and baking, the solvent, the organic binder, and the like contained in the phosphor material are removed, and the phosphor 27 is solidified. The phosphor 27 is formed on the phosphor side portion 27a where the portion formed on the side surface of the partition wall 23 is flat, on the partition wall material remaining portions 25 constituting the bottom of the discharge cell 26, and on the dielectric layer 22. The resulting portion becomes a surface wave type phosphor bottom 27b.

Thereafter, the glass substrates 21 and 1 are arranged to face each other, and the glass substrates 21 and 1 are bonded to each other, and Ne-Xe, He-Xe
And the surroundings are sealed with a seal glass or the like. As described above, a plasma display having predetermined characteristics can be obtained.

As described above, according to the plasma display of the present embodiment, corrugated partition wall material remaining portions 25, 25,... Are formed on the upper surface of dielectric layer 22 at the bottom of discharge cells 26. Since the surface of the phosphor bottom 27b is formed on the corrugated partition wall material remaining portions 25, 25,..., By increasing the surface area of the bottom of the phosphor 27 to an area occupied by the phosphor 27 or more. The effective fluorescent area of the body 27 can be greatly increased, so that the luminous efficiency of the phosphor 27 and the brightness can be increased. As a result, a brighter screen can be obtained with the same amount of ultraviolet light.

According to the method of manufacturing a plasma display of the present embodiment, the partition pattern 34 is formed on the partition layer 33.
And the corrugation forming pattern 35 are patterned, and the partition layer 33 is cut using these patterns as masks to form corrugated partition wall material remaining portions 25, 25,..., So that the discharge cells 26 having an increased bottom surface area. Can be easily produced. Therefore, it is possible to manufacture a plasma display whose effective surface area is greatly increased by a simple process without increasing the area occupied by the phosphor 27 in the discharge cells 26. Also, on the dielectric layer 22,
Partition walls 23, 23, ... and corrugated partition wall material remaining parts 25, 25,
Are collectively formed, so that the discharge cells 2
There is no need to separately prepare a step for forming a concave portion having a wavy shape or the like at the bottom of 6.

[Second Embodiment] A plasma display according to a second embodiment of the present invention and a method for manufacturing the same will be described with reference to the drawings. FIG. 5 is a plan view showing a glass substrate (transparent substrate) on the back side of the plasma display. The difference between the plasma display of the present embodiment and the plasma display of the above-described first embodiment is that In the plasma display according to the embodiment, the remaining portions 25, 25,.
Is formed, the side surface of the discharge cell 26 is flat, the bottom surface is corrugated, and the side surface of the phosphor 27 formed on the inner surface of the discharge cell 26 is flat, and the bottom surface is corrugated. While the effective surface area of the body 27 is increased, in the plasma display of the present embodiment, the side wall of the partition 41 is corrugated, and the surface of the dielectric layer 22 is flat, so that the partition 4
Discharge cell 4 defined by the dielectric layers 1 and 41 and the dielectric layer 22
2 has a corrugated side surface, a flat bottom surface, a corrugated side surface portion of the phosphor 27 formed on the inner surface of the discharge cell 26, and a flat bottom surface portion thereof to increase the effective surface area of the phosphor 27. It is a point.

In order to manufacture this plasma display, a corrugated partition wall pattern for forming a partition is patterned on the partition layer 33 in the method of manufacturing a plasma display according to the first embodiment described above. By using the corrugated partition wall pattern as a mask, the partition wall layer 33 may be cut by sandblasting to form a corrugated partition wall parallel to the dielectric layer 22 on the dielectric layer 22. .

According to the plasma display of the present embodiment, the side surface of the partition 41 is corrugated, and the surface of the dielectric layer 22 is flat, so that the side surface of the phosphor formed on the inner surface of the discharge cell 26 is formed. Is shaped like a wave, so that the surface area of the side surface portion of the phosphor is increased beyond its occupied area, thereby significantly increasing the effective phosphor area of the phosphor as in the plasma display of the first embodiment. Therefore, the luminous efficiency of the phosphor can be increased, and the luminance can be increased. As a result, a brighter screen can be obtained with the same amount of ultraviolet light.

According to the manufacturing method of the plasma display of the present embodiment, since the corrugated partition pattern is patterned on the partition layer 33, the cross section of the partition is processed into the corrugated shape with respect to the partition layer 33. Thus, a discharge cell having an increased side surface area can be easily manufactured. Therefore, it is possible to manufacture a plasma display whose effective surface area is greatly increased by a simple process without increasing the area occupied by the phosphor in the discharge cells.

[Third Embodiment] A plasma display and a method of manufacturing the same according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a sectional view showing a glass substrate (transparent substrate) on the back side of the plasma display, and FIG.
6 is a cross-sectional view taken along the line BB of FIG. 6. In these figures, reference numeral 51 denotes a rear glass substrate (transparent substrate). Partition walls 52, 52, 52, 52
Are formed, and these partition walls 52, 52 and 52,
A concave portion defined by the bottom surface between the grooves 52 is a groove 53 whose bottom surface is corrugated and whose side surfaces are flat.

At a predetermined position on the bottom surface of the groove 53, Ag,
Stripe-shaped address electrodes 54 mainly composed of Ag-Pd or the like are formed, and each address electrode 54 is covered with a dielectric layer 55 having a high reflectance. These partition walls 52, 52
And a concave portion defined by the dielectric layer 55 is a groove-shaped discharge cell 56 which is a space for performing gas discharge. The inside of these discharge cells 56, 56,.
2 and 52 and on the dielectric layer 55, the phosphors 57 and 5 corresponding to the three primary colors R, G and B (red, green and blue).
7,... Are formed.

The phosphor 57 includes a phosphor side portion 57 a having a flat surface formed on the side surface of the partition wall 52 and a dielectric layer 5.
The surface formed on 5 is constituted by a corrugated phosphor bottom portion 57b. Since the side surface of the groove 53 is flat, the surface of the phosphor side portion 57a formed on this side surface is also flat, but the bottom surface of the groove 53 is corrugated along its extending direction. Therefore, the surface of the phosphor bottom portion 57b formed on this bottom surface also becomes a wavy surface. Then, when the glass substrate 51 and the glass substrate 1 are combined, Ne-Xe, He-Xe
In a state where a mixed gas such as that described above is sealed, the periphery is sealed with a seal glass or the like.

In this plasma display, the phosphor 5
7 has a flat surface area of the phosphor side 57a formed on the side surface of the partition wall 52 and a discharge cell 5
6 is the sum of the phosphor bottom portion 57b formed on the dielectric layer 55 constituting the bottom portion and the wavy surface area. Also in this phosphor 57, as in the plasma display of the first embodiment described above, the effective surface area can be increased without increasing the occupied area of the phosphor 57, and as a result, the luminance is reduced. It becomes possible to improve it conventionally.

Next, a method of manufacturing the plasma display will be described with reference to FIG. First, as shown in FIG. 8A, the flat glass substrate 51 is cleaned and dried using an ultrasonic cleaning device or the like, and then the glass substrate 51 is dried.
The partition pattern 34 and the corrugated pattern 35 shown in FIG. 4 are patterned. The basic shapes of the partition wall pattern 34 and the corrugated pattern 35 are the same as the partition wall pattern 34 and the corrugated pattern 35 of the first embodiment described above. In the present embodiment, the actual widths of the partition wall pattern 34 and the corrugated pattern 35 in consideration of the cutting depth, the cutting speed, and the like when directly cutting the thick glass substrate 51 using the pattern as a mask. And length are set.

After that, using the partition wall pattern 34 and the corrugation forming patterns 35, 35,... As a mask, an abrasive (WA # 80) using a sand blast machine (manufactured by Fuji Seisakusho).
0) is sprayed on the surface of the glass substrate 51,
Cut 1 directly. In this cutting step, as shown in FIG. 8B, first, the surface portion of the glass substrate 51 not covered with the partition wall pattern 34 and the corrugated pattern 35 is cut.

Since the corrugation forming pattern 35 is narrower than the partition wall pattern 34, the corrugation forming pattern 35 having a smaller width is skipped during the cutting as shown in FIG.
As shown in (c), the surface of the glass substrate 51 on which the corrugated pattern 35 has been formed is also cut. As this cutting proceeds, the glass substrate 51
A groove 61 having a flat side surface 61a and a corrugated bottom surface 61b is formed. The bottom surface 61b has a corrugated shape in which a portion corresponding to the corrugation forming pattern 35 is a top portion, and other portions are inclined surfaces having a downward slope from the top portion. This makes it possible to collectively form, on the glass substrate 51, the partitions 53, 52,... And the grooves 53 formed between the partitions 52, 52 with a corrugated bottom surface and flat side surfaces.

In this sand blasting method, when calcium carbonate, glass beads, or the like is used as the abrasive, the cutting force is weak on the glass substrate 51 made of a material such as soda lime glass, and sufficient cutting is performed. Therefore, it is preferable to use a silicon carbide powder having a sufficient cutting force. In this case, in order to cope with silicon carbide powder having a high cutting force, it is preferable that the photoresist is made of a material that is hardly soluble in alkali, has a high glass transition point, and is soft after solidification, Further, it is preferable to select a dry film resist based on the adhesive strength to the glass substrate 51 and the high cutting resistance against sandblasting.

After that, as shown in FIG. 8D, the partitioning pattern 34 is removed, and a lamination is performed with an electrode sheet (not shown) so as to cover the surface of the glass substrate 51 in which the groove 61 is formed. After masking using a photomask (not shown) in which a plurality of slits having a position and a shape corresponding to an address electrode to be patterned are formed, exposure of a portion corresponding to each slit on the electrode sheet ( UV) ・ Development is performed to remove excess portions of the electrode sheet. Thereafter, the remaining electrode sheet is fired to form the address electrodes 54 on the bottom surfaces 61b of the grooves 61.

The groove 61 in which the address electrode 54 is formed
After laminating with a dielectric sheet (not shown) so as to cover the bottom portion 61b of the substrate, baking is performed to form a dielectric layer 55 so as to cover the address electrodes 54. A region surrounded by the dielectric layer 55 and the partition walls 52, 52 becomes a groove-shaped discharge cell 56 which is a space for performing gas discharge shown in FIG.

Next, the three primary colors R, G, B (red,
Green, blue)
Thereafter, by drying and baking, the solvent, the organic binder, and the like contained in the phosphor material are removed, and the phosphor 57 is solidified. The phosphor 57 has a flat portion 57a formed on the side surface of the partition wall 52, and a surface wave type fluorescent portion formed on the dielectric layer 55 constituting the bottom of the discharge cell 56. It becomes the body bottom 57b.

Thereafter, the glass substrates 51, 1 are arranged facing each other, and the glass substrates 51, 1 are bonded to each other, and Ne-Xe, He-Xe
And the surroundings are sealed with a seal glass or the like. As described above, a plasma display having predetermined characteristics can be obtained.

As described above, according to the plasma display of the present embodiment, the partition wall 5 is formed on the glass substrate 51.
2, 52 and a bottom surface form a corrugated groove 53, an address electrode 54 and a dielectric layer 55 covering the address electrode 54 are formed on the bottom surface of the groove 53, and the side surfaces of the partition walls 52, 52 constituting the discharge cell 56; Since the phosphor 57 is formed on the dielectric layer 55,
By making the bottom surface of the groove 53 formed in the glass substrate 51 into a wavy shape, the surface of the phosphor 57 formed on the dielectric layer 55 becomes a wavy shape having the same shape as the bottom surface of the groove 53. The surface area of the bottom portion of the body 57 can be increased, and the entire surface area including the increased portion can be an effective fluorescent area. Therefore, the brightness of the phosphor can be increased, and a brighter screen can be obtained even with the same amount of ultraviolet light.

According to the manufacturing method of the plasma display of the present embodiment, the partition pattern 3 is formed on the glass substrate 51.
4 and a pattern 35 for forming a corrugation, and then a groove 53 having a corrugated bottom surface and a flat side surface is formed in the glass substrate 51 by sandblasting using the pattern as a mask. Is formed, and the phosphor 57 is formed on the dielectric layer 55 and the side surface of the partition wall 52. Therefore, the effective surface area of the phosphor 57 can be greatly increased by a simple process. Therefore, a plasma display having a high luminance of the phosphor can be easily manufactured at low cost. In addition, the glass substrate 5
Since the grooves 53 and the partitions 52, 52,... Can be formed collectively, there is no need to separately prepare a step for forming a corrugated concave portion at the bottom of the discharge cell 56.

[Fourth Embodiment] A plasma display and a method of manufacturing the same according to a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 9 is a partially cutaway perspective view showing a glass substrate (transparent substrate) on the back side of the plasma display. The plasma display according to the present embodiment is different from the plasma display according to the first embodiment described above with respect to the second embodiment.
The configuration is a combination of the plasma displays of the embodiments.

That is, on the upper surface of the dielectric layer 22, the corrugated partition wall material remaining portions 25, 25,... And the partition walls 41 whose side faces are corrugated along the extending direction are collectively formed.
1 and the partition material remaining portions 25, 25,... And the dielectric layer 22 are used as discharge cells, and the phosphors 71 are formed in the discharge cells. The surface of the phosphor 71 is
Both the side and bottom portions are corrugated.

In order to form the wavy partition wall material remaining portions 25, 25,... And the partition walls 41 at once, a planer wave type partition wall is formed on the partition layer formed on the upper surface of the dielectric layer 22. A corrugated partitioning pattern for forming, and a striped corrugated forming pattern independently formed between adjacent partitioning patterns are formed, and the partition layer is formed using these patterns by sandblasting. May be cut.

According to the plasma display of this embodiment, the wavy partition wall material remaining 2
, 25,... And the side walls are corrugated along the extending direction, and the phosphors 71 are formed on the side surfaces of the partition walls 41 and the remaining partition walls 25, 25,. Since the surface of the phosphor 71 is corrugated on both the side surface and the bottom surface, the surface area of both the side surface and the bottom surface of the phosphor can be increased beyond its occupied area, and the effective fluorescent area of the phosphor can be increased. Can be further increased. Therefore, the luminance of the phosphor can be further increased, and a brighter screen can be obtained even with the same amount of ultraviolet light.

According to the method of manufacturing a plasma display of the present embodiment, a plasma display having a high luminance of a phosphor can be easily manufactured at low cost by using the sandblast method.

[Fifth Embodiment] A plasma display and a method of manufacturing the same according to a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a partially cutaway perspective view showing a glass substrate (transparent substrate) on the back side of the plasma display.
This is a configuration in which the plasma display according to the second embodiment and the plasma display according to the third embodiment are combined.

That is, in a region of the glass substrate 51 where discharge cells are to be formed, a partition wall 81 having a wave-like shape in plan view and a groove 82 having a wave-like bottom surface are collectively formed, and an address electrode 54 and a dielectric material are formed on the bottom surface of the groove 82. A layer 55 is formed, and a region defined by the partition walls 81 and 81 and the dielectric layer 55 is used as a discharge cell.
A phosphor 83 is formed in the discharge cell. The surface of the phosphor 83 has a wavy shape on both the side surface portion and the bottom surface portion.

In order to collectively form the ribs 81 having a wave-like shape in plan view and the grooves 82 having a wave-like bottom surface, a wave-like partition for forming wave-like ribs is formed on the glass substrate 51. And a stripe-shaped corrugated pattern formed independently between adjacent patterns and adjacent partition patterns, and the glass substrate 51 may be cut using these patterns by sandblasting.

According to the plasma display of this embodiment, on the glass substrate 51, the partition wall 81 having a wave shape in plan view and the groove 82 having a wave shape on the bottom surface are collectively formed, and the dielectric formed on the bottom surface of the groove 82 is formed. Since the area defined by the body layer 55 and the partition walls 81, 81 is used as a discharge cell, and the phosphor 83 is formed in the discharge cell, the surface area of both the side surface portion and the bottom surface portion of the phosphor is increased beyond the occupied area. And the effective fluorescent area of the phosphor can be further increased.
Therefore, the brightness of the phosphor can be further increased,
A brighter screen can be obtained with the same amount of ultraviolet light.

According to the method for manufacturing a plasma display of the present embodiment, a plasma display having a high luminance of the phosphor can be easily manufactured at low cost by using the sandblast method.

The embodiments of the plasma display and the method of manufacturing the same according to the present invention have been described above with reference to the drawings. However, the specific structure is not limited to the above-described embodiments. The design can be changed without departing from the gist. For example, in the above embodiment, the corrugation was formed by using the sand blast method,
Of course, it may be formed by a method other than the sandblast method, for example, by etching.

[0075]

As described above, according to the first aspect of the present invention,
According to the plasma display described in 4 or 5, the unevenness is formed on the bottom surface and / or side surface of the phosphor formed on the inner surface of each discharge cell, so that the phosphor is occupied by the discharge cell with a simple structure. The effective surface area can be increased without increasing the area. Therefore, the brightness of the phosphor can be increased, and a brighter screen can be obtained even with the same amount of ultraviolet light.

According to the second aspect of the present invention, the corrugated irregularities are formed on the bottom and / or side surfaces of the phosphor, so that the effective surface area of the phosphor can be further increased. . Therefore, the brightness of the phosphor can be further increased, and a brighter screen can be obtained even with the same amount of ultraviolet light.

According to the third aspect of the present invention, since the unevenness is formed on the surface of the transparent substrate corresponding to each of the discharge cells, the surface area of the bottom surface of the phosphor formed on this area is reduced. Can be increased,
The effective fluorescent area can be increased. Therefore, the brightness of the phosphor can be increased, and a brighter screen can be obtained even with the same amount of ultraviolet light.

According to a sixth aspect of the present invention, a region corresponding to each of the plurality of discharge cells on the surface of one of the transparent substrates is cut or stamped to form a concave portion having an uneven bottom surface. Since the phosphor is formed on the inner surfaces of these recesses, the effective surface area can be greatly increased by a simple process without increasing the area occupied by the phosphor in the discharge cells. Therefore, a plasma display having a high luminance of the phosphor can be easily manufactured at low cost.

According to a seventh aspect of the present invention, a partition layer for forming the partition is formed on the surface of the transparent substrate, and regions of the partition layer corresponding to the discharge cells are cut. Alternatively, the bottom surface is formed by touching, so that the effective surface area can be greatly increased by a simple process without increasing the area occupied by the phosphor in the discharge cell. Therefore, a plasma display having a high luminance of the phosphor can be easily manufactured at low cost.

According to the method for manufacturing a plasma display according to claim 8, 9 or 10, a partition pattern for forming the partition on one of the transparent substrate or the partition layer, and the pattern for the partition Independent from and forming a corrugated pattern having a width smaller than the width of the partition wall pattern, and then cutting or touching the transparent substrate or the partition wall layer using these patterns, Since the plurality of partitions and the concave portions whose bottom surfaces are uneven are formed in the partition layer, the partition walls and the concave portions can be formed collectively. Therefore, there is no fear that the number of manufacturing steps increases or the manufacturing cost increases.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a main part of a glass substrate on the back side of a plasma display according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a process chart showing a method of manufacturing the plasma display according to the first embodiment of the present invention.

FIG. 4 is a plan view showing a pattern used in the method for manufacturing a plasma display according to the first embodiment of the present invention.

FIG. 5 is a plan view showing a main part of a glass substrate on the back side of a plasma display according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a main part of a glass substrate on the back side of a plasma display according to a third embodiment of the present invention.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

FIG. 8 is a process chart showing a method of manufacturing a plasma display according to a third embodiment of the present invention.

FIG. 9 is a partially broken perspective view showing a main part of a glass substrate on the back side of a plasma display according to a fourth embodiment of the present invention.

FIG. 10 is a partially broken perspective view showing a main part of a glass substrate on the back side of a plasma display according to a fifth embodiment of the present invention.

FIG. 11 is an exploded perspective view showing a conventional plasma display.

[Explanation of symbols]

 1, glass substrate (transparent substrate) 3 transparent electrode 4 dielectric layer 5 transparent protective film 6 address electrode 7 dielectric layer 8 partition 9 discharge cell 10 phosphor 21 glass substrate (transparent substrate) 22 dielectric layer 23 partition 25 Partition material remaining 26 Discharge cell 27 Phosphor 27a Phosphor side 27b Phosphor bottom 31 Conductive paste 32 Dielectric material 33 Partition layer 33a Partition material 34 Partition pattern 35 Waveform forming pattern (irregularity forming pattern) 41 Partition 42 discharge Cell 51 Glass substrate (transparent substrate) 52 Partition wall 53 Groove 54 Address electrode 55 Dielectric layer 56 Discharge cell 57 Phosphor 57a Phosphor side part 57b Phosphor bottom part 61 Groove 61a Side surface 61b Bottom 71 Phosphor 81 Partition wall 82 Groove 83 Phosphor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kure Jihwan 2-7 Sugazawa-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside the Electronics Research Laboratory, Samsung Yokohama R & D Co., Ltd. 2-7 Inside the Samsung Yokohama Research Laboratory Electronic Research Laboratory (72) Inventor Yuka Yamada 2-7 Sugazawa-machi, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside the Samsung Yokohama Research Laboratory Electronic Research Laboratory F-term (reference) 2H025 AA03 AA04 AB11 AB20 AC01 AD01 FA33 5C027 AA09 5C028 FF16 5C040 FA01 GF02 GF12 GF19 GG09 JA09 JA12 MA03 MA22

Claims (10)

[Claims] 1. A pair of transparent substrates are opposed to each other, a plurality of partitions are formed between the transparent substrates, and each concave portion defined by the partitions is a discharge cell, and an inner surface of each of the discharge cells is formed. What is claimed is: 1. A plasma display comprising a phosphor, wherein irregularities are formed on a surface of a bottom surface and / or a side surface of the phosphor. 2. The plasma display according to claim 1, wherein the irregularities are corrugated. 3. The surface of one of the transparent substrates, wherein irregularities are formed in regions corresponding to the discharge cells, and the phosphor is formed on the irregularities. Plasma display. 4. The plasma display according to claim 1, wherein said partition has a corrugated cross section parallel to a surface of said transparent substrate. 5. The plasma display according to claim 1, wherein irregularities are formed on side surfaces of the partition. 6. A pair of transparent substrates are disposed to face each other, a plurality of partitions are formed between the transparent substrates, and each concave portion defined by these partitions serves as a discharge cell, and an inner surface of each of the discharge cells is formed. In a method of manufacturing a plasma display having a phosphor formed thereon, a region corresponding to each of the plurality of discharge cells on a surface of one of the transparent substrates is cut or stamped to form a concave portion having a concave and convex bottom surface. Forming the phosphor on the inner surface of the plasma display. 7. A partition layer for forming the partition wall is formed on the surface of the transparent substrate, and a region of the partition layer corresponding to each of the discharge cells is cut or stamped to form a concave portion having an uneven bottom surface. 7. The method for manufacturing a plasma display according to claim 6, wherein: 8. On the transparent substrate or the partition layer,
The partition wall pattern for forming the partition wall, and a concavo-convex formation pattern having a width independent of the partition wall pattern and smaller than the width of the partition wall pattern, and then using these patterns, the transparent substrate or 8. The method according to claim 6, wherein the partition layer is cut or stamped to form a plurality of partitions and concave portions having irregularities on the bottom surface of the transparent substrate or the partition layer. 9. The method according to claim 8, wherein a plurality of the concavo-convex forming patterns are formed along an extending direction of the partition wall pattern. 10. The method of manufacturing a plasma display according to claim 8, wherein the partition pattern is corrugated.