JP2008052962A - Plasma display panel and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plasma display panel in which a cause of generation of a warping of a substrate is determined, generation of the warping is suppressed, positioning with high precision is realized at oppositely arranging the front plate and the rear plate, and reduction of brightness and erroneous discharge are prevented. <P>SOLUTION: The plasma display panel is provided with a display electrode, a light shielding layer, and a dielectric layer covering these at least on one glass substrate, and a component expressed by R<SB>2</SB>0 (R is at least one kind selected from Li, Na, K, Rb, and Cs) is contained by two kinds or more in the glass component contained in the dielectric layer. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a display electrode and a dielectric layer of a plasma display panel.

  In recent years, expectations for high-quality televisions with large screens have increased. Conventional CRTs are superior to plasma display panels (hereinafter referred to as PDPs) and liquid crystals in terms of resolution and image quality, but are not suitable for large screens of 40 inches or more in terms of depth and weight. is there. In addition, the liquid crystal has excellent performance such as low power consumption and low driving voltage, but there is a limit to a large screen and a viewing angle. On the other hand, the PDP can realize a narrow depth on a large screen, and a 60-inch class product has already been developed.

  A PDP basically includes a front plate and a back plate. The front plate covers a display electrode composed of a glass substrate of sodium borosilicate glass by a float method, a striped transparent electrode formed on one main surface of the glass substrate, and a main electrode. The dielectric layer functions as a capacitor, and a protective layer made of magnesium oxide (MgO) formed on the dielectric layer. On the other hand, the back plate is a glass substrate, stripe-shaped address electrodes formed on one main surface thereof, a base dielectric layer covering the address electrodes, a partition formed on the base dielectric layer, It is comprised with the fluorescent substance layer which light-emits each of red, green, and blue formed between the partition walls.

  The front plate and the back plate are hermetically sealed with their electrode forming surfaces facing each other, and Ne—Xe discharge gas is sealed at a pressure of 55 kPa to 80 kPa in a discharge space (discharge cell) partitioned by a partition wall. Yes. PDP discharges by selectively applying a video signal voltage to the display electrode, and the ultraviolet rays generated by the discharge excite each color phosphor layer to emit red, green and blue light, thereby realizing color image display is doing.

  As described above, the display electrode is composed of a transparent electrode and a main electrode. Further, the main electrode is a silver electrode or a bus electrode made of Cr—Cu—Cr, a ruthenium compound, a ruthenium oxide, a copper-iron-based, and a cobalt black. It is comprised from the black electrode formed using this complex oxide and glass powder.

The black electrode is formed on the transparent electrode by using the paste containing the black composite oxide and the glass powder for the purpose of suppressing the reflection of external light and improving the bright place contrast, and on the black electrode. A bus electrode is formed. For the same purpose as the black electrode, a light shielding layer called a black stripe is disposed between the two transparent electrodes. At present, the black electrode and the light shielding layer are sometimes formed of the same material (see, for example, Patent Document 1).
JP 2004-063247 A

  The dielectric layer is required to have a high withstand voltage and a high light transmittance, but this characteristic greatly depends on the composition of the glass component contained in the dielectric layer.

  Conventionally, as a method for forming such a dielectric layer, a paste composed of a binder component composed of a glass powder component and a resin-containing solvent, a plasticizer, a dispersant, and the like is used by a screen printing method or a die coating method. There is a method in which the electrode is applied onto a front glass substrate on which an electrode is formed, and dried at 450 to 600 ° C. after drying. In addition, a method is known in which the paste is applied onto a film, dried, transferred to a front plate on which an electrode is formed, and baked at about 450 ° C. to 600 ° C.

In the past, in order to enable firing at about 450 ° C. to 600 ° C., the glass component contained in the dielectric layer contained 20% by weight or more of lead oxide. For consideration, the alkali metal represented by 0.5 to 15% by weight of R ₂ O (R is at least one selected from Li, Na, K, Rb and Cs) without containing lead oxide in the glass. There is also an example of technology including the oxide of

However, when the alkali metal oxide represented by R ₂ O is contained in the glass component of the dielectric layer as described above, the glass substrate is greatly warped after the dielectric layer is baked. There has been a problem that the accuracy of alignment when the face plate and the back plate are arranged to face each other is lowered.

  For this reason, within the display area surface of the PDP, there exist discharge cells in which the position of the phosphor formed on the back plate and the opening that transmits visible light on the front plate is shifted, and the brightness of the entire PDP image display is reduced. This has caused problems such as the occurrence of erroneous discharges in discharge cells that are out of position. This phenomenon becomes more prominent as the PDP substrate becomes larger, and is an important issue for a PDP that aims to further increase the screen.

  The present invention investigates the cause of occurrence of warpage of the substrate, suppresses the occurrence of warpage, realizes high-precision alignment when the front plate and the back plate are opposed to each other, and prevents a decrease in luminance and erroneous discharge. A PDP is provided.

The PDP of the present invention has a display electrode, a light-shielding layer, and a dielectric layer covering these on at least one glass substrate, and R ₂ O (R is in the glass component contained in the dielectric layer). 2 or more types of components represented by at least one selected from Li, Na, K, Rb, and Cs). Moreover, it has a display electrode, a light shielding layer, and a dielectric layer covering them on at least one glass substrate, and R ₂ O (R is Li in the glass component contained in the display electrode and the light shielding layer). And at least one selected from Na, K, Rb and Cs). In this case, the display electrode is composed of a plurality of layers, and at least one of the plurality of layers is composed of a black electrode, and R ₂ O (R is Li, Na, Two or more components represented by at least one selected from K, Rb and Cs) may be contained.

In the method for producing a PDP of the present invention, two or more components represented by R ₂ O (R is at least one selected from Li, Na, K, Rb and Cs) are formed on a substrate on which a transparent electrode is formed. Apply a black electrode composed of a glass powder component and a binder component consisting of a resin-containing solvent, a light-shielding layer or a dielectric layer paste by screen printing, spraying, blade coating, or die coating. And firing at 450 ° C. to 600 ° C.

  The present invention investigates the cause of the occurrence of warpage of the substrate by the above configuration, suppresses the occurrence of warpage, realizes high-precision alignment when the front plate and the back plate are arranged to face each other, and reduces luminance. And a PDP that prevents erroneous discharge.

  Hereinafter, a PDP according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
FIG. 1 is a perspective view showing the structure of PDP 1 in the first embodiment.

  On the front glass substrate 3 of the front plate 2, a pair of strip-like display electrodes 6 and light-shielding layers (black stripes) 7 composed of the scanning electrodes 4 and the sustain electrodes 5 are arranged in a plurality of rows in parallel with each other. A dielectric layer 8 serving as a capacitor is formed on the front glass substrate 3 so as to cover the display electrode 6 and the light shielding layer 7, and a protective layer 9 made of magnesium oxide (MgO) is formed on the surface. Has been.

  On the back glass substrate 11 of the back plate 10, a plurality of strip-like address electrodes 12 are arranged in parallel to each other in a direction perpendicular to the scanning electrodes 4 and the sustain electrodes 5 of the front plate 2. Layer 13 is covering. Further, a partition wall 14 having a predetermined height is formed on the base dielectric layer 13 between the address electrodes 12 to divide the discharge space 16. For each address electrode 12, a phosphor layer 15 that emits red, blue, and green light by ultraviolet rays is sequentially applied to the grooves between the barrier ribs 14 and formed. A discharge cell is formed at a position where the scan electrode 4 and the sustain electrode 5 intersect with the address electrode 12, and the discharge cell having red, blue and green phosphor layers 15 arranged in the direction of the display electrode 6 is used for color display. Become a pixel.

  The front plate 2 and the back plate 10 formed as described above are arranged to face each other, and the outer peripheral portion thereof is hermetically sealed with a sealing material made of glass frit or the like. The discharge space 16 inside the sealed PDP 1 is filled with a discharge gas such as Ne and Xe at a pressure of 55 kPa to 80 kPa.

FIG. 2 is a cross-sectional view of the front plate 2 showing the configuration of the dielectric layer 8 of the PDP in the first embodiment. 2 is shown upside down from FIG. As shown in FIG. 2, a display electrode 6 and a light shielding layer 7 including scanning electrodes 4 and sustain electrodes 5 are formed in a pattern on a front glass substrate 3 manufactured by a float method or the like. Scan electrode 4 and sustain electrode 5 are transparent electrodes 4a and 5a made of ITO, SnO ₂ or the like, metal bus electrodes 4b and 5b made of a conductive material mainly composed of a silver material, a ruthenium compound or a ruthenium oxide, respectively. , Copper-iron-based, cobalt black complex oxide, and black electrodes 4c and 5c made of glass powder.

  The metal bus electrodes 4b and 5b are used for the purpose of imparting electrical conductivity in the longitudinal direction of the transparent electrodes 4a and 5a, and the black electrodes 4c and 5c are used for the purpose of suppressing the reflection of external light and improving the bright place contrast. . Therefore, for these purposes, black electrodes 4c and 5c are formed on the transparent electrodes 4a and 5a, and metal bus electrodes 4b and 5b are formed on the black electrodes 4c and 5c.

  The dielectric layer 8 includes a first dielectric layer 81 provided on the front glass substrate 3 so as to cover the transparent electrodes 4a and 5a, the metal bus electrodes 4b and 5b, and the light shielding layer 7, and a first dielectric. The second dielectric layer 82 formed on the layer 81 has at least two layers, and the protective layer 9 is formed on the second dielectric layer 82.

  Next, a method for manufacturing the PDP 1 will be described. First, the scan electrode 4, the sustain electrode 5, and the light shielding layer 7 are formed on the front glass substrate 3. The transparent electrodes 4a and 5a, the metal bus electrodes 4b and 5b, and the black electrodes 4c and 5c are formed by patterning using a photolithography method or the like. The transparent electrodes 4a and 5a are formed using a thin film process or the like, and the metal bus electrodes 4b and 5b are solidified by baking a paste containing a silver material at a desired temperature. In addition, the black electrodes 4c and 5c and the light shielding layer 7 are formed in the same step by screen printing a paste containing a black pigment or forming a black pigment on the entire surface of the glass substrate, and then patterning and baking using a photolithography method. Is formed.

  Next, a dielectric paste is applied on the front glass substrate 3 by a die coating method or the like so as to cover the scan electrode 4, the sustain electrode 5, and the light shielding layer 7, thereby forming a dielectric paste layer (dielectric material layer). After the dielectric paste is applied, the surface of the applied dielectric paste is leveled by leaving it to stand for a predetermined time, so that a flat surface is obtained. Thereafter, the dielectric paste layer is baked and solidified to form the dielectric layer 8 that covers the scan electrode 4, the sustain electrode 5, and the light shielding layer 7. The dielectric paste is a paint containing a dielectric material such as glass powder, a binder and a solvent. Next, a protective layer 9 made of magnesium oxide (MgO) is formed on the dielectric layer 8 by a vacuum deposition method. Through the above steps, predetermined components (scanning electrode 4, sustaining electrode 5, light shielding layer 7, dielectric layer 8, and protective layer 9) are formed on front glass substrate 3, and front plate 2 is completed.

  On the other hand, the back plate 10 is formed as follows. First, the structure for the address electrode 12 is formed by a method of screen printing a paste containing silver (Ag) material on the rear glass substrate 11 or a method of patterning using a photolithography method after forming a metal film on the entire surface. An address electrode 12 is formed by forming a material layer to be an object and firing it at a desired temperature. Next, a dielectric paste is applied on the rear glass substrate 11 on which the address electrodes 12 are formed by a die coating method so as to cover the address electrodes 12 to form a dielectric paste layer. Thereafter, the base dielectric layer 13 is formed by firing the dielectric paste layer. The dielectric paste is a paint containing a dielectric material such as glass powder, a binder and a solvent.

  Next, a partition wall forming paste including a partition wall material is applied on the base dielectric layer 13 and patterned into a predetermined shape to form a partition wall material layer and then fired to form the partition walls 14. Here, as a method of patterning the partition wall paste applied on the base dielectric layer 13, a photolithography method or a sand blast method can be used. Next, the phosphor layer 15 is formed by applying a phosphor paste containing a phosphor material on the base dielectric layer 13 between the adjacent barrier ribs 14 and on the side surfaces of the barrier ribs 14 and baking it. Through the above steps, the back plate 10 having predetermined components on the back glass substrate 11 is completed.

  In this way, the front plate 2 and the back plate 10 provided with predetermined constituent members are arranged to face each other so that the display electrodes 6 and the address electrodes 12 are orthogonal to each other, aligned with high precision, and the periphery thereof is made of glass. The PDP 1 is completed by sealing with a frit and enclosing a discharge gas containing Ne, Xe, etc. in the discharge space 16.

Next, the dielectric layer 8 of the front plate 2 will be described in detail. The glass component contained in the dielectric layer 8 is mainly composed of components other than lead (Pb) -based components, and two or more types of R ₂ O (R is at least one selected from Li, Na, K, Rb and Cs). It is comprised by the material composition containing this. Further, it is necessary that at least the first dielectric layer 81 of the first dielectric layer 81 and the second dielectric layer 82 constituting the dielectric layer 8 has this material composition.

  A dielectric material powder is produced by pulverizing a dielectric material composed of these composition components with a wet jet mill or a ball mill so that the average particle size is 0.5 μm to 2.5 μm. Next, the dielectric material powder 55 wt% to 70 wt% and the binder component 30 wt% to 45 wt% are well kneaded with three rolls to prepare a dielectric layer paste for die coating or printing.

  The binder component is terpineol or butyl carbitol acetate containing 1% to 20% by weight of ethyl cellulose or acrylic resin. In addition, dioctyl phthalate, dibutyl phthalate, triphenyl phosphate and tributyl phosphate are added to the paste as needed, and glycerol monooleate, sorbitan sesquioleate, homogenol (Kao Corporation) as a dispersant. The printability may be improved by adding a phosphoric ester of an alkyl allyl group or the like.

  Next, this dielectric layer paste is applied to the front glass substrate 3 so as to cover the display electrodes 6 by a screen printing method, a spray method, a blade coater method, or a die coating method, and then dried. And firing at 450 ° C. to 600 ° C.

  By having the dielectric layer 8 formed in this way, it becomes possible to suppress warping of the substrate. The results of studying substrate warpage suppression will be described below.

  As a method for examining the degree of warping of the substrate, the same substrate as the above-mentioned PDP glass substrate is used, and several types of glass paste are formed thereon by the above-described coating method and firing method, and the residual stress of the glass substrate is measured. Thus, the amount of distortion caused by the glass component of the dielectric layer was evaluated.

  The examination method is described in detail below. Glass paste is composed of a binder component consisting of a glass powder component and a resin-containing solvent. After blending the various components to the desired composition, they are mixed and dispersed homogeneously by a disperser such as a three-roller. I can do it.

  And the said glass paste was apply | coated and dried by the die-coating method on the glass substrate in which the transparent electrode was formed in the whole surface, and it baked at 600 degreeC, and formed the dielectric material layer. A similar dielectric layer was also formed on a glass substrate on which no transparent electrode was formed.

  A polarization strain meter was used as a method for evaluating the amount of strain generated on the glass substrate. The polarization strain meter can measure the residual stress existing in the glass substrate due to the distortion caused by the glass component.

  Under these conditions, an example having the material composition of the dielectric layer corresponding to the first embodiment and a sample serving as a comparative example were prepared, and strain measurement was performed. The contents of main components of the glass powder component of the glass paste used for each sample are shown in Table 1, and the measurement results of the residual stresses with the polarization strain gauges of Examples and Comparative Examples are shown in FIG.

As shown in Table 1, none of the samples contained a lead (Pb) -based component in the glass component, and in each of Examples 1 and 2, R ₂ O (R is Li, Na, K, As an alkali metal oxide represented by (at least one selected from Rb and Cs), both K ₂ O and Li ₂ O are contained. On the other hand, in Comparative Example 1, only K ₂ O is used as the R ₂ O. Comparative Example 2 contains only Li ₂ O as R ₂ O.

  Moreover, in the measurement result in FIG. 3, the value in the positive (+) direction indicates that compressive stress exists in the glass substrate, and the value in the negative (−) direction indicates that tensile stress exists in the glass substrate. Show.

  As shown in FIG. 3, in Comparative Example 1, the direction of the residual stress is different between the case where there is a transparent electrode and the case where there is no transparent electrode, and the absolute value is larger in the case where there is no transparent electrode. On the other hand, in Comparative Example 2, the absolute value without the transparent electrode is larger than the absolute value with the transparent electrode. However, in Comparative Examples 1 and 2, there is no significant difference in the values when there is a transparent electrode.

As described above, when the dielectric layer contains only one type of the R ₂ O component, the residual stress without the transparent electrode is abnormal, and when the two types of the R ₂ O component are contained, the dielectric layer is transparent. This suggests that the residual stress with and without the electrode is almost the same.

  Further, two types of PDP were prepared using the front plate having the glass component dielectric layer of Example 1 and the front plate having the glass component dielectric layer of Comparative Example 1 used in this study. The parts of the PDP other than the front plate were manufactured by the same manufacturing method as described above. And when the deviation | shift amount in the board | substrate edge part of both front and back plates of both PDP was compared, in the PDP which had the dielectric material layer of Example 1, it was 10-50 micrometers, In Comparative Example 1, A deviation of 100 to 200 μm occurred.

  The following can be considered as a mechanism for causing such a difference in residual stress and a difference in deviation amount.

In the PDP having the dielectric layer having the material composition of Comparative Example 1, as described above, R ₂ O (R is at least one selected from Li, Na, K, Rb and Cs) in the glass component of the dielectric layer. As an alkali metal oxide represented by the formula, only K ₂ O is included. The glass substrate also contains several kinds of alkali metal oxides represented by R ₂ O, and K ₂ O of the same component is also included therein.

For this reason, K ₂ O in the glass component of the dielectric layer reacts with the alkali metal oxide represented by R ₂ O in the glass substrate during firing of the dielectric layer. However, since the alkali metal oxide in the glass component of the dielectric layer is one kind of K ₂ O, this reaction becomes active and residual stress is generated in the glass substrate after firing. On the other hand, when there is a transparent electrode on the glass substrate, the transparent electrode exists between the dielectric layer and the glass substrate, and such a reaction does not occur. The difference in the reaction at the time of firing also occurs in Comparative Example 2 containing only Li ₂ O as the R ₂ O. This is the difference in residual stress depending on the presence / absence of the transparent electrode of Comparative Example 1 and Comparative Example 2 shown in FIG.

  And in the front board which has the dielectric material layer which made the material composition of this comparative example 1 the glass component, the location with a residual stress and the location without a residual stress will exist on the same glass substrate. Due to the difference in residual stress, a difference in the amount of strain generated due to the difference in thermal shrinkage between the dielectric layer and the glass substrate after firing and cooling occurs. And since there are many different strains in the same substrate surface in such a minute region, the substrate is greatly warped, and when the front plate and the back plate are bonded together, the above-described deviation amount occurs. Conceivable.

On the other hand, in the PDP having the dielectric layer having the material composition of Example 1, R ₂ O (R is at least one selected from Li, Na, K, Rb and Cs) in the glass component of the dielectric layer. As the oxide of the alkali metal represented by the formula, two types of K ₂ O and Li ₂ O are included. In the glass substrate, several kinds of alkali metal oxides represented by R ₂ O are contained.

Then, as in the case of Comparative Example 1, reacting K ₂ O in the glass component of the dielectric layer, and Li ₂ O, an oxide of the alkali metal represented by R ₂ O in the glass substrate during firing . However, unlike the case of Comparative Example 1, since there are two types of alkali metal oxides in the glass component of the dielectric layer, this reaction does not become active, and the stress remaining on the glass substrate after firing is suppressed. The For this reason, as shown in FIG. 3, there is no difference in residual stress depending on the presence or absence of the transparent electrode on the glass substrate. As a result, there is no difference in the amount of distortion generated due to the difference in thermal shrinkage as in Comparative Example 1 described above, and no deviation occurs when the front plate and the back plate are bonded together.

  As described above, by using the dielectric layer of the present embodiment taking the glass components shown in Example 1 and Example 2 as examples, the cause of occurrence of warpage of the substrate is investigated, and the occurrence of warpage is suppressed. In addition, it is possible to provide a PDP that realizes highly accurate alignment when the front plate and the back plate are opposed to each other and prevents a reduction in luminance and erroneous discharge.

(Embodiment 2)
Further, the effect of the first embodiment regarding the relationship between the dielectric layer and the glass substrate can also be implemented in the black electrodes 4 c and 5 c and the light shielding layer 7. In the second embodiment, the case where the black electrodes 4c and 5c and the light shielding layer 7 are implemented will be described. Note that the manufacturing method and materials used for the portions of the PDP other than the black electrodes 4c and 5c and the light shielding layer 7 are the same as those in the first embodiment, and thus the description thereof is omitted.

In the second embodiment, as in the first embodiment, the black electrodes 4c and 5c and the light shielding layer 7 are formed by the same process and the same material. First, it is represented by a black complex oxide such as a ruthenium compound, ruthenium oxide, copper-iron, or cobalt, and R ₂ O (R is at least one selected from Li, Na, K, Rb, and Cs). A glass powder containing two or more kinds of alkali metal oxides is used as a paste material. Then, the black electrodes 4c and 5c and the light shielding layer 7 are formed on the glass substrate by a screen printing method or the like.

  Here, as shown in FIGS. 1 and 2, the black electrodes 4 c and 5 c are formed on the transparent electrodes 4 a and 5 a, but the light shielding layer 7 is directly formed on the front glass substrate 3. For this reason, similarly to the phenomenon described in the first embodiment, the reaction between the light-shielding layer 7 and the front glass substrate 3 due to baking does not become active, and the heat shrinkage difference on the same glass substrate is suppressed. The amount of deviation between the front plate and the back plate can be reduced.

The first and second embodiments described above show only K ₂ O and Li ₂ O as alkali metal oxides represented by R ₂ O in the dielectric layer, the black electrode, and the light shielding layer. However, similar effects can be obtained with oxides of Na, Rb, Cs, and Fr, which are other alkali metals.

  Needless to say, by implementing the first and second embodiments on the same PDP, the warpage of the substrate is further suppressed, and the effects of the present invention can be obtained synergistically.

  In the above-described embodiment, the material of the glass component, the ratio of the layer thickness, the number of layers, the paste composition material, the firing profile, and the like are not limited to the above-described conditions, and are appropriately changed according to the material characteristics. Thus, the same effect can be obtained.

In the present embodiment, the relationship between the front glass substrate and the dielectric layer is described. However, the present invention can be similarly applied to the rear glass substrate and the base dielectric layer. By containing at least two types of R ₂ O (R is at least one selected from Li, Na, K, Rb, and Cs), it is possible to suppress the difference in distortion amount and the warpage of the substrate caused thereby. It is.

  As described above, according to the present invention, it is extremely useful to realize a PDP that suppresses the warpage of the substrate, has high alignment accuracy between the front plate and the back plate, and prevents erroneous discharge and luminance reduction.

The perspective view which shows the structure of the plasma display panel in embodiment of this invention Sectional drawing which shows the structure of the front plate of the plasma display panel The figure which shows the measurement result of the distortion generation amount of the dielectric material layer of this invention, and a glass substrate

Explanation of symbols

2 Front plate 5 Maintenance electrode 3 Front glass substrate 4 Scan electrode 4a, 5a Transparent electrode 4b, 5b Metal bus electrode 4c, 5c Black electrode 6 Display electrode 7 Light shielding layer (black stripe)
8 Dielectric layer 9 Protective layer

Claims (4)

A display electrode and a dielectric layer covering the display electrode are provided on at least one glass substrate, and R ₂ O (R is formed from Li, Na, K, Rb and Cs) in the glass component contained in the dielectric layer. A plasma display panel comprising two or more components represented by at least one selected. It has a display electrode and a light shielding layer on at least one glass substrate, and R ₂ O (R is selected from Li, Na, K, Rb and Cs) in the glass component contained in the display electrode and the light shielding layer. A plasma display panel comprising two or more components represented by at least one selected from the group consisting of: The display electrode is composed of a plurality of layers, and at least one of the display electrodes is composed of a black electrode, and R ₂ O (R is Li, Na, K, Rb) in the glass component contained in the black electrode and the light shielding layer. 3. The plasma display panel according to claim 2, comprising two or more components represented by at least one selected from Cs and Cs. A solvent containing a resin and a glass powder component containing two or more components represented by R ₂ O (R is at least one selected from Li, Na, K, Rb and Cs) on a substrate on which a transparent electrode is formed. A black electrode composed of a binder component, a light shielding layer or a dielectric layer paste is applied by a screen printing method, a spray method, a blade coater method or a die coating method, and baked at 450 ° C. to 600 ° C. A method of manufacturing a plasma display panel.

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