JP2003197106A - Ac type gas discharge display device and method of manufacturing the device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an AC type gas discharge display device of three electrode structure capable of suppressing a deformation resulting from a heat treatment performed at the time of electrode formation and easily providing a write electrode of proper size at a proper position and a method of manufacturing the display device. <P>SOLUTION: In the manufacture of a PDP10, thick film conductive layers, i.e., a maintaining wire layer 36 and a write wire layer 40 for forming a maintaining electrode 46 and a write electrode 48 are provided on a sheet member 20. The maintaining electrode 46 and write electrode 48 can be provided by merely disposing the sheet member 20 between a front plate 16 and a rear plate 18. When a discharge electrode is installed on the front plate 16 and the rear plate 18, the deformation of the front plate 16, rear plate 18, and electrodes 46 and 48 resulting from a heat treatment at the time of formation of the discharge electrodes can be suitably suppressed. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC (alternating current discharge) type gas discharge display device and a method for manufacturing the same.

[0002]

2. Description of the Related Art A transparent first substrate (front plate) and a second substrate (rear plate) arranged in parallel at a predetermined distance from the front plate.
And a plurality of discharge spaces formed between the front plate and the back plate and sealed in a predetermined gas in an airtight space, and for selectively generating a gas discharge in each of the plurality of discharge spaces. A plurality of pairs of sustain electrodes covered with a dielectric and a write electrode for generating a write discharge between the sustain electrodes for selecting the light emitting section, and the gas in the hermetic space There is known an AC type gas discharge display device of a type that displays a desired image such as a character, a symbol, or a figure by emitting light by utilizing discharge. For example, the light emission of neon, orange, etc. accompanying the generation of plasma generated by gas discharge is directly used, or
(Pixel or cell) is equipped with a fluorescent substance, and the plasma display panel (P type) that utilizes the emission of the fluorescent substance excited by the ultraviolet rays generated by the plasma
lasmaDisplay Panel (PDP) and so on. Such a gas discharge display device is a flat panel type with a large screen, a thin type,
Since it is easy to reduce the weight and has a wide viewing angle and a fast response speed comparable to those of a CRT, it is expected as an image display device to replace the CRT.

[0003]

By the way, the conventional AC
In the gas discharge display device of the type, generally, a sustain film and a write electrode are formed by using a thick film forming process in which a conductor material is applied to the inner surfaces of a front plate and a back plate and a heating process such as a baking process is performed. Had been formed. Therefore, during heat treatment for forming the electrode, due to variations in the amount of thermal expansion based on the temperature distribution in the front plate and the back plate, and differences in the coefficient of thermal expansion with the electrode, the front plate and the back plate are There is a problem that the electrode is cracked and the electrode is also cracked or deformed. When such distortion occurs, it becomes difficult to secure the flatness of the front plate and the back plate and the pattern accuracy of the electrodes and the like.

Moreover, in the gas discharge display device having the three-electrode structure including the write electrodes as described above, the sustain electrodes extending in one direction and parallel to each other are provided on one of the front plate and the back plate, and the other is provided. And a write electrode extending along a direction orthogonal to the sustain electrode. Therefore, it is difficult to obtain the relative positional accuracy between the sustain electrode and the write electrode formed on the front plate and the back plate in the process of overlapping and sealing them. In addition, the writing speed for selecting the light emitting section increases as the mutual spacing between the sustain electrode and the writing electrode decreases, but it is small because it is determined by the mutual spacing between the front plate and the back plate (substrate spacing). I couldn't. The substrate interval is determined by the height of the barrier ribs that partition and form the discharge space, but it is desirable to raise the barrier ribs in order to secure the coating area of the phosphor layer and obtain high brightness. Further, the larger the area of the write electrode is, the higher the writing effect is. However, in the above structure, since the space between the sustain electrode and the write electrode is relatively large, erroneous discharge (erroneous writing) is likely to occur when the area is increased. There was also a problem.

The present invention has been made in view of the above circumstances, and an object thereof is to suppress distortion and the like due to heat treatment at the time of forming an electrode and to keep the write electrode at an appropriate position and size. An object of the present invention is to provide an AC type gas discharge display device having a three-electrode structure that can be easily provided and a manufacturing method thereof.

[0006]

In order to achieve such an object, the gist of the AC type gas discharge display device of the first invention is that a transparent first substrate and a predetermined substrate from the first substrate are used. Second substrates arranged in parallel at a distance, and the first substrates
A plurality of discharge spaces provided between the substrate and the second substrate and formed in an airtight space in which a predetermined gas is sealed, and a plurality of discharge spaces, each of which is covered with a dielectric for generating a gas discharge. A plurality of pairs of sustain electrodes and a plurality of write electrodes capable of generating a gas discharge between the sustain electrodes to select a light emitting section, and the plurality of pairs of sustain electrodes generate a gas discharge. An AC type gas discharge display device of a type that observes light through the first substrate, comprising: (a) a core dielectric layer made of a thick film dielectric having a predetermined thickness dimension in a grid pattern; A core dielectric layer formed of a plurality of first conductors laminated on one surface of the core dielectric layer so as to extend in parallel with each other along one direction of the grid and having a portion located between intersections of the grid to function as the sustain electrodes; 1 thick film conductor layer,
(c) A plurality of core dielectric layers laminated on the other surface so as to extend in parallel with each other along the other direction of the lattice and located between the intersections of the lattice to function as the write electrode. A second thick film conductor layer composed of two conductors; and (d) a coated dielectric layer composed of a thick film dielectric covering the first thick film conductor layer. To include sheet members arranged parallel to them.

[0007]

According to this structure, a plurality of pairs of sustain electrodes and a plurality of pairs of sustain electrodes are provided by the first thick film conductor layer and the second thick film conductor layer provided on one surface and the other surface of the lattice-shaped sheet member, respectively. Individual write electrodes are configured. Therefore, since the discharge electrode is provided only by disposing the sheet member between the first substrate and the second substrate, the heat treatment for forming the discharge electrode on the inner surface is not performed on the first substrate and the second substrate. Therefore, the first substrate resulting from the heat treatment,
An AC type gas discharge display device having a three-electrode structure in which distortion of the second substrate, electrodes and the like is suppressed can be obtained. Moreover, since there is no limitation on the position and size of the write electrode as in the case where the sustain electrode and the write electrode are provided on the substrate,
It is possible to provide this at an appropriate position and size. That is, since the sustain electrode and the write electrode are both provided in one sheet member, the conventional three-electrode structure PDP in which they are separately provided on the front plate and the back plate.
The problem of relative positional accuracy of the electrodes at the time of sealing does not occur. Further, the mutual spacing between the sustain electrode and the write electrode is determined by the thickness dimension of the core dielectric layer and is independent of the substrate spacing, so that the mutual spacing can be made sufficiently small. Further, as a result that the distance between the sustain electrode and the write electrode can be reduced, the write electrode area can be increased and the write effect can be enhanced without fear of erroneous discharge.

[0008]

According to another aspect of the present invention, preferably, the first thick film conductor layer is a grid of the core dielectric layer in a portion located between the intersections of the first conductors adjacent to each other. Is provided with a facing portion fixed so as to cover a part of the inner wall surface of the above and to face each other. With this configuration, the first thick-film conductor layer is provided with the facing portions that face each other in the lattice of the sheet member on its inner wall surface, and thus the facing portions substantially form the discharge electrodes. Therefore, since the discharge surfaces are opposed to each other and are provided in parallel with each other, the variation in the discharge voltage (starting voltage or sustain voltage) between the light emitting sections (pixels or cells) is reduced, and the operation margin is widened. There is. In particular, in a gas discharge display device of the type in which a phosphor layer is provided in the discharge space, the discharge surface is located at an intermediate height position between the first substrate and the second substrate and the discharge direction is along those inner surfaces. Since it is in the opposite direction, the influence of the discharge gas and ions on the inner surface of the first substrate and the inner surface of the second substrate is small, and there is also an advantage that the phosphor layer can be provided in a wide range to increase the brightness.

Incidentally, in the opposed discharge structure in the conventional gas discharge display device, as described above, the first discharge electrode and the second discharge electrode are provided on the inner surfaces of the front plate and the back plate, respectively. In the case of a color display device that utilizes the emission of phosphor, it is preferable to use RG in order to obtain high brightness and efficiency.
It is also desirable to apply it to the partition surface that separates the B light emission and forms the discharge space and the surface of the dielectric layer of the front plate or the back plate. However, in this case, it is necessary that the fluorescent material is not applied to the discharge region of the dielectric layer, and that the fluorescent material is coated with a protective film such as MgO. For this reason, the arrangement position of the phosphor layer is limited and the area thereof is remarkably reduced, and it is difficult to obtain high brightness. Further, since the phosphor layer is located in the vicinity of the part where the discharge occurs, there is a problem that the deterioration due to the discharge gas / ions is remarkable. Further, it was difficult to realize as a manufacturing process that the protective MgO film is uniformly applied to the surface of the dielectric layer between the barrier ribs and that the fluorescent material is applied while leaving the discharge region. On the other hand, in the surface discharge type gas discharge display device, the phosphor layer is spatially separated from the discharge region on substantially the entire one of the front plate and the back plate where the discharge electrode is not provided. Since it can be provided, it is possible to obtain high brightness while suppressing the deterioration of the phosphor. However, since the distance between the electrode surfaces of the discharge electrodes arranged on one plane is not uniform, the smallest portion is more likely to be discharged and the efficiency is higher. Therefore, the deterioration of the dielectric layer and the protective film covering the electrodes is most advanced at the adjacent edge portions of the electrode pattern because the probability of starting the discharge is high. Further, the larger the electrode pattern, the lower the average efficiency. That is, in the conventional gas discharge display device, it is difficult to achieve both the operating margin and the brightness.

Preferably, the facing portions are provided on both sides in the width direction of each of the plurality of first conductors. By doing so, substantially all of the grids provided on the sheet member are provided with the pair of facing portions that function as discharge electrodes. Therefore, the combination of pairs to be discharged in the odd-numbered discharge spaces counted from the end and the combination of pairs to be discharged in the even-numbered discharge spaces are alternately switched, and one frame is formed by two fields ( Ie 1
By adopting 2: 1 interlace (interlaced scanning) for displaying (image), the number of scanning lines can be doubled and the resolution can be improved compared to the conventional three-electrode structure without increasing the number of first conductors. It will be possible.

Preferably, the second thick film conductor layer is
The grid of the core dielectric layer is provided with a protrusion protruding toward the inner peripheral side of the discharge space in which the facing portion is provided. With this configuration, since the protruding portion substantially functions as the writing electrode, there is an advantage that the writing discharge becomes more reliable than when the protruding portion is not provided.

Further, preferably, in the gas discharge display device, a plurality of concave grooves extending along a longitudinal direction of the plurality of second conductors are provided at positions between the plurality of second conductors. It is provided on at least one of the facing surfaces of the first substrate and the second substrate. With this configuration, the discharge space is formed by the groove and the lattice of the sheet member. Therefore, by appropriately determining the depth dimension of the groove and the thickness dimension of the sheet member, a suitable size can be obtained. A gas discharge display device having a discharge space is obtained. That is, since the relatively convex portions between the concave grooves substantially function as barrier ribs, it is not necessary to provide barrier ribs for forming the discharge space on the inner surfaces of the first substrate and the second substrate.
In particular, in a display device for a color display in which the phosphor layer is provided in the discharge space, the phosphor layer is provided in the groove so that the sheet is formed without providing the partition walls on the inner surfaces of the first substrate and the second substrate. There is an advantage that contact between the member and the phosphor layer can be prevented.

Preferably, the rib-shaped wall provided on at least one of the first substrate and the second substrate for forming the above-mentioned concave groove or discharge space extends along one direction of the lattice of the sheet member. The portion is provided in a positional relationship so as to be located on the relatively convex portion of the first substrate and the second substrate. By doing so, the light generated in the portion of the discharge space on the side opposite to the viewing side across the sheet member, for example, the light emission of the phosphor layer provided on the opposite side is generated by the sheet member. Since it is suppressed from being blocked,
The brightness of the gas discharge display device is further enhanced.

[0014]

A second aspect of the present invention for attaining the above object is to provide a transparent first substrate and a predetermined distance from the first substrate. Second substrates arranged in parallel, a plurality of discharge spaces provided between the first substrate and the second substrate and formed in an airtight space filled with a predetermined gas, and each of the plurality of discharge spaces A plurality of pairs of sustain electrodes covered with a dielectric for generating a gas discharge at, and a plurality of write electrodes capable of generating a gas discharge between the sustain electrodes for selecting a light emitting section, A type of observing light generated by gas discharge between the plurality of pairs of sustain electrodes through the first substrate
The C-type gas discharge display device is provided with the first substrate and the second substrate.
A method for manufacturing by stacking substrates and hermetically sealing them, comprising: (a) a core dielectric layer made of a thick film dielectric having a predetermined thickness dimension in a grid pattern; and (b) the core dielectric layer. A first layer comprising a plurality of first conductors laminated on one surface of the body layer so as to extend parallel to each other along one direction of the lattice, and having a portion located between intersections of the lattice function as the sustain electrode. The thick film conductor layer and (c) the portion of the core dielectric layer laminated on the other surface so as to extend in parallel with each other along the other direction of the grid and located between the intersections of the grid function as the write electrode. A sheet member provided with a second thick-film conductor layer composed of a plurality of second conductors, and (d) a coated dielectric layer made of a thick-film dielectric covering the first thick-film conductor layer, Sheet member fixing process for fixing on one inner surface of the first substrate and the second substrate It lies in including.

[0015]

According to this structure, the first thick film conductor layer and the second thick film conductor layer can be manufactured when the gas discharge display device is manufactured by stacking and fixing the first substrate and the second substrate.
The discharge electrode and the write electrode are provided in the discharge space by fixing the sheet member, in which the thick film conductor layers are laminated on both surfaces of the grid-like thick film dielectric layer, to the first substrate or the second substrate. . Therefore, since the thick film conductor layer for forming the discharge electrode and the write electrode is provided on the sheet member, it is only necessary to dispose the sheet member between the first substrate and the second substrate. Since the write electrode can be provided, when the discharge electrode or the write electrode is provided on the first substrate and the second substrate, distortion of the first substrate, the second substrate, the electrode, etc. due to the heat treatment at the time of forming them It is possible to manufacture a gas discharge display device in which is suppressed.

[0016]

According to another aspect of the second aspect of the present invention, preferably, in the method for manufacturing a gas discharge display device described above, (e) a high temperature obtained by bonding particles having a melting point higher than a predetermined first temperature with a resin. A supporting body preparing step of preparing a supporting body having a film-forming surface composed of a melting point particle layer, and (f) a lower layer formed by bonding particles of a thick film conductor material sintered at the first temperature with a resin. A lower conductor paste film forming step of forming a side conductor paste film on the film formation surface in a predetermined pattern divided into a plurality of portions corresponding to one of the first thick film conductor layer and the second thick film conductor layer; g) A dielectric paste film formed by binding constituent particles of a thick film dielectric material that is sintered at the first temperature with a resin is formed into a grid pattern corresponding to the core dielectric layer to form the lower conductor paste film. A step of forming a dielectric paste film by laminating on the surface, and (h) the above An upper conductor paste film, in which constituent particles of a thick film conductor material that can be sintered at a temperature are combined with a resin, is divided into a plurality of parts corresponding to the other of the first thick film conductor layer and the second thick film conductor layer. An upper conductor paste film forming step of forming a layer on the surface of the dielectric paste film in a predetermined pattern, and (i) heating the support at the first temperature to sinter the high melting point particle layer. Without sintering the lower conductor paste film, the upper conductor paste film, and the dielectric paste film, the lower conductor paste film, the upper conductor paste film,
And a firing step of producing the first thick film conductor layer, the second thick film conductor layer, and the core dielectric layer from a dielectric paste film, to manufacture the sheet member.

By doing so, the thick film dielectric is formed on the film forming surface formed of the high melting point particle layer having a melting point higher than the sintering temperature (first temperature) of the thick film dielectric material and the thick film conductor material. After the paste films of the material and the thick-film conductor material are respectively formed in a predetermined pattern, the thick-film dielectric material and the thick-film conductor material are subjected to heat treatment at the first temperature, whereby the thick film is formed. A sheet member having a thick film conductor layer formed on the surface of the dielectric layer is produced. Therefore, since the high-melting point particle layer that is not sintered at the heat treatment temperature becomes a layer in which only the high-melting point particles are arranged by burning the resin, the generated thick film is not fixed to the support,
It can be easily peeled off from the film forming surface. At this time, the paste film of the thick film dielectric material and the thick film conductor material can be formed on the film formation surface in a desired pattern using a simple facility by using an appropriate method according to the material and the application. It is possible. Moreover, it is easy to handle because it is applied to the film forming surface and is temporarily fixed until it is sintered by heat treatment. Therefore, the sheet member for providing the discharge electrode and the write electrode can be easily manufactured and used for manufacturing the gas discharge display device.

The thick film sintered on the layer in which only the high-melting point particles are arranged as described above is not restricted by the forming surface at the time of contraction unlike the normal thick film formation. Therefore, warpage, deformation, and the like due to shrinkage resistance with the forming surface are suppressed, and in turn, cracks and the like caused by the warpage and deformation are also suppressed. Therefore, there is an advantage that distortion of the discharge electrode is further suppressed.

Further, preferably, the first thick film conductor layer is
In a portion located between the intersections of the first conductors adjacent to each other, a facing portion is provided which covers a part of the inner wall surface of the lattice of the core dielectric layer and is fixed so as to face each other. And forming a wall surface conductor paste film in which the constituent particles of the thick film conductor material that is sintered at the first temperature are bonded with a resin on the inner wall surface of the grid of the dielectric paste film in a pattern corresponding to the facing portion. It includes a wall conductor paste film forming step. With this configuration, in the wall surface conductor paste film forming step, since the wall surface conductor paste film for forming the facing portion is provided, the first thick film conductor layer is formed with the facing portion, and thus the sheet is formed. Member first
By being fixed on the substrate or the second substrate, it is possible to manufacture a gas discharge display device having a facing portion that substantially functions as a discharge electrode.

Further, preferably, the support preparing step is
The high melting point particle layer is formed on the surface of a predetermined substrate. In this way, since the paste film is formed on the substrate, the shape of the support is maintained even after the heat treatment, so that the support is composed of only the high melting point particle layer (for example, ceramics). Compared with the case where the support is made of a green sheet), there is an advantage that the sheet member for providing the discharge electrode in the discharge space can be easily handled. Moreover, when such a support is used, the substrate in which the high melting point particle layer is interposed between the substrate and the paste film does not restrain the paste film during the heat treatment, and the surface of the paste film is not restricted. Since the roughness reflects only the surface roughness of the high melting point particle layer, the influence on the quality of the sheet member such as the flatness of the substrate, the surface roughness, and the expansion coefficient is small, so high quality is required for the substrate. Not done.

Also, preferably, the substrate does not deform at the firing temperature. By doing so, the shape of the film-formed surface is maintained at the initial shape even when the heat treatment for producing the thick-film dielectric layer and the thick-film conductor layer is performed, so that the high-melting point particle layer is formed. Forming on the surface has an advantage that it can be repeatedly used as a support. As the substrate, an appropriate substrate satisfying the above conditions is selected, and for example, general glass, heat-resistant glass, ceramic plate, metal plate or the like can be used.

Further, preferably, a thick film dielectric paste is provided on the outer peripheral side of the core dielectric layer on which the first thick film conductor layer and the second thick film conductor layer are provided on the one surface and the other surface, respectively. It includes a coating step of forming the coated dielectric layer by coating and heat treatment. With this configuration, the covering dielectric layer that covers the first thick film conductor layer and the second thick film conductor layer can be easily provided. More preferably,
The application of the thick film dielectric paste is performed by a dipping process.

Preferably, in the paste film forming step, the lower conductor paste film, the upper conductor paste film, the coated conductor paste film, and the dielectric paste film are formed by using a thick film screen printing method. Each is formed. The method for forming the paste film is selected from various methods such as printing, sand blasting, lift-off, and photo process using a photosensitive paste according to cost, required accuracy, and balance with other steps. An appropriate method can be used, but in the case of the printing method as described above, the film forming material is not applied to an unnecessary portion of the film forming surface, so that there is an advantage that the material is not wasted. That is, the waste of the material removed at the time of processing is extremely reduced as compared with that by pressing the ceramic green sheet, laser processing the ceramic sheet, or chemical etching of the metal material.

Further, the high melting point particles are preferably made of an inorganic material such as ceramics or glass frit. As the high melting point particles, an appropriate inorganic material can be used as long as it does not soften after the resin forming the high melting point particle layer is burned. The specific material is appropriately selected according to the type of thick film material forming the sheet member and the firing temperature thereof.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an AC type color PDP (hereinafter, simply referred to as PDP) 1 which is an example of the gas discharge display device of the present invention.
It is a perspective view which notches and shows a part of 0 structure. In the figure, the PDP 10 includes a front plate 16 and a rear plate 18 that are arranged in parallel with each other with a predetermined interval so that the generally flat surfaces 12 and 14 face each other. The front plate 16 and the rear plate 18 are hermetically sealed at their peripheral portions via a lattice-shaped sheet member 20, whereby an airtight space is formed inside the PDP 10. These front plate 16 and back plate 18
Both have a size of about 900 × 500 (mm) and a uniform thickness of about 1.1 to 3 (mm), are transparent and have a softening point of about 700 (° C). It is made of natural soda lime, glass, etc. In this embodiment, the front plate 16 corresponds to the first substrate and the back plate 18 corresponds to the second substrate.

The inner surface 12 of the front plate 16 has a plurality of longitudinal grooves 2 extending in one direction and parallel to each other.
2 are provided at a constant center interval of about 200 to 500 (μm), and the airtight space between the front plate 16 and the back plate 18 is formed in a plurality of discharge spaces 24 by the convex portions (projections) between them. It is divided. The concave groove 22 is provided by polishing the inner surface 12 or the like, and has a depth dimension of about 100 (μm) or less and an opening width dimension of about 150 to 400 (μm). is there. Therefore, the width dimension of the convex portion between the concave grooves 22 is
At the uppermost position, it is about 50 to 100 (μm), for example. The sheet member 20 has a positional relationship in which a portion extending along one direction overlaps the convex portion between the concave grooves 22.

Further, in the above-mentioned groove 22, the phosphor layer 26 is separately coated for each groove 22, that is, for each discharge space 24.
Is provided with a thickness determined for each color in the range of, for example, about 10 to 20 (μm). The phosphor layer 26 is made of any one of phosphors of three colors corresponding to the emission colors of R (red), G (green), B (blue), etc. which are made to emit light by ultraviolet excitation, and are adjacent to each other. The discharge spaces 24 are provided so as to have different emission colors.

On the other hand, on the inner surface 14 of the back plate 18,
A plurality of elongated recessed grooves 28 extending in one direction and parallel to each other are provided at positions facing the recessed grooves 22 with a constant center interval of about 200 to 500 (μm). The depth dimension and the opening width dimension of the groove 28 are substantially the same as those of the groove 22. Even within the groove 28, the phosphor layer 3 is provided for each groove 28.
0 is provided with a thickness dimension within a range of, for example, about 10 to 20 (μm). The phosphor layer 30 is provided with the same emission color as the phosphor layer 26 provided in the facing groove 22 on the front plate 16 so that a single emission color is obtained for each discharge space 24. ing. That is, in this embodiment, the front plate 14 and the back plate 16 are configured in substantially the same manner.

FIG. 2 is a view for explaining the sectional structure of the PDP 10 in a section passing through the center of the groove 22 along the longitudinal direction. The sheet member 20 has a lattice-like (see FIG. 1) core dielectric layer 32 forming its skeleton, and a range extending from one surface 34 (upper surface in the drawing) to one side surface (that is, an inner wall surface of the lattice). The storage wiring layer 36 that is laminated and fixed to the storage wiring layer, and the writing that is stacked and fixed in a range from the other surface (the lower surface in the drawing) 38 located on the opposite side to one side surface (that is, the inner wall surface of the lattice) The wiring layer 40, the covering dielectric layer 42 covering the wiring layer 40, and the protective film 44 covering the covering dielectric layer 42 and forming the surface layer of the sheet member 20. . In this embodiment, the sustain wiring layer 36 corresponds to the first thick film conductor layer and the write wiring layer 40 corresponds to the second thick film conductor layer.

The core dielectric layer 32 has a thickness of 50 to 150 (μm).
The width dimension of each of the portions that extend in the vertical and horizontal directions forming the lattice is the same as the width dimension of the upper surface of the convex portion between the concave grooves 22, for example. Considering the degree or alignment margin, it is slightly wider than that, for example, about 80 to 200 (μm). Further, the core dielectric layer 32 is formed of, for example, PbO-B ₂ O ₃ -SiO ₂ -Al ₂ O ₃ -ZnO-Ti.
It is composed of a low softening point glass such as O ₂ system or a combination thereof and a thick film dielectric material such as ceramic filler such as alumina.

The sustain wiring layer 36 and the write wiring layer 40 are thick film conductors containing, for example, silver (Ag), chromium (Cr), copper (Cu), etc. as conductive components, for example, 5 to 10 It is provided with a thickness of about (μm). The former sustain wiring layer 36
A part 46 of the core dielectric layer 32 that covers the side surface of the core dielectric layer 32 functions as a sustain electrode for generating gas discharge in the discharge space 24. As shown in the figure, the sustain electrodes 46 are arranged at positions parallel to and opposite to each other on the inner wall surface of the lattice forming the sheet member 20. That is, the PDP 10 has an opposed discharge structure in which discharge is performed between sustain electrodes facing each other in the discharge space 24. In this embodiment,

In the latter write wiring layer 40, the portion (the portion shown in the center in the figure) 48 located between the above-mentioned sustain electrodes (opposing portions) 46, 46 is the above-mentioned sustain electrode in the discharge space 24. This is for generating a write discharge for selecting a light emitting section (cell) between one of 46 and 46, for example, one located on the left side in the drawing.

The coating dielectric layer 42 is, for example,
Within a range of about 10 to 30 (μm), for example, with a thickness dimension of about 20 (μm), for example, PbO-B ₂ O ₃ -SiO ₂ -Al ₂ O ₃ -ZnO-TiO ₂ system or a combination thereof. It is a thick film made of low softening point glass or the like. The covering dielectric layer 42 is provided for ac discharge between the sustain electrodes 46, 46 by accumulating charges on the surface, but at the same time, the sustain electrode 46 and the write electrode composed of a thick film material are formed. By not exposing the embedded electrode 48, it also has a role of suppressing the atmosphere change in the discharge space 24 due to the out gas from these.

The protective film 44 has a thickness of, for example, 0.5 (μ
It is a thin film or thick film having a thickness of about m) and containing MgO or the like as a main component. The protective film 44 prevents the coating dielectric layer 42 from being sputtered by discharge gas / ions, but since it is made of a dielectric material having a high secondary electron emission coefficient, it substantially functions as a discharge electrode. .

FIG. 3 is a diagram for explaining in detail the structure of the sustain wiring layer 36 and the write wiring layer 40 by cutting out a part of the sheet member 20. In the figure, the sustain wiring layer 36 includes a plurality of wiring portions 50 extending along one direction of a lattice that constitutes the sheet member 20, and the write wiring layer 40 is arranged in the other direction perpendicular to the one direction. A plurality of mutually insulated wiring portions 52 extending along the wiring portion 52 are provided. That is, the wiring portions 50 and 52 are provided along the directions perpendicular to each other. These wiring parts 50 and 52 are both 50 to 80
It has a constant width dimension of about (μm). Also,
The wiring portions 50 and 52 are each formed of a grid-shaped core dielectric layer 32.
Is located at the central portion in the width direction of each component.

Further, the wiring portion 50 of the sustain wiring layer 36 includes
Protrusions 54 that protrude laterally, that is, in a direction substantially parallel to the wiring portion 52, are provided at a plurality of positions in the longitudinal direction. The sustain electrode 46 is provided so as to be continuous from the tip of the protrusion 54 and to be perpendicular thereto. The width dimension of the protrusion 54 and the sustain electrode 46 is, for example, about 100 (μm), and the height dimension of the sustain electrode 46 is about 50 to 150 (μm), which is approximately equal to the thickness dimension of the sheet member 20,
For example, it is about 100 (μm). That is, the sustain electrode 46 is provided so as to cover a part of the side surface of the core dielectric layer 32.

On the other hand, in the wiring portion 52 of the write wiring layer 40,
Protrusions, that is, write electrodes 48 protruding laterally are provided at a plurality of positions in the longitudinal direction.
The width of the protrusion, that is, the write electrode 48 is, for example, 50.
To about 150 (μm), for example, about 100 (μm), the wiring portion 5
The protrusion length from 2 is, for example, about 30 to 100 (μm), for example, about 50 (μm).

FIG. 4 schematically shows the connection relationship between the wiring portion 50 of the sustain wiring layer 36 and the wiring portion 52 of the write wiring layer 40, and the sustain electrode 46 and the write electrode 48. In the figure, a plurality of wiring portions 50 extending in the left-right direction are provided one at each of the portions extending in the left-right direction of the grid-shaped core dielectric layer 32. The sustain electrode 46 is
Common wiring parts 50 are connected in the left-right direction in the figure.
It is connected to the. Further, the wiring section 50 is provided so that the wiring section 50 independent of all the other wiring sections 50 and the wiring section 50 connected to the common wiring are alternately located in the vertical direction in the drawing.

On the other hand, in the figure, a plurality of wiring portions 52 extending in the vertical direction are provided in all of the portions extending in the horizontal direction of the grid-shaped core dielectric layer 32. Also, as shown in the figure, the write electrode 48
Are all in the same direction, that is, in the left direction in the figure, and are provided in the space where the pair of sustain electrodes 46, 46 exists in the grid.

As shown in the figure, the sheet member 4
The mutual spacing of the two grating components is not uniform. That is, the portion of the write wiring layer 40 extending along the wiring portion 52 is provided with a constant mutual spacing Gw of, for example, about 200 (μm), but the portion of the storage wiring layer 36 extending along the wiring portion 50. Is a relatively small mutual gap Gs1 of about 100 (μm) and a relatively large mutual gap G of about 600 (μm).
s2 appears alternately. The sustain electrodes 46, 46 are opposed to each other at a portion having a relatively small mutual gap Gs1. As illustrated in the center of the left end in FIG. 4, in the present embodiment, since sustain discharge for display is performed between the sustain electrodes 46, 46, the discharge gap is 100 (μm) approximately equal to the mutual gap Gs1.
It is a degree. Further, as is clear from comparing FIG. 4 with FIG. 1 described above, in the sheet member 20, the constituent portions of the lattice extending along the wiring portion 52 are located on the convex portions between the concave grooves 22. The above-mentioned FIG. 2 corresponds to A in FIG.
It is a figure corresponding to the -A view cross section.

For this reason, a predetermined AC pulse is applied to the plurality of wiring portions 50 to which the individually independent ones of the sustain electrodes 46 opposed to each other are connected to sequentially scan, and the scanning is performed. In synchronization with the timing, a predetermined AC pulse is applied to the desired one of the write electrodes 48 corresponding to the data (that is, the write electrode corresponding to the one selected as the section to emit light) via the wiring section 52. Then, as shown in the cell at the left end of FIG. 4, a write discharge is generated between them, and the sustain electrode 4 is generated.
Electric charges are accumulated on the protective film 44 on 6. After scanning all the sustain electrodes 46 in this manner, all the sustain electrodes 4 are scanned.
When a predetermined AC pulse is applied between the wirings 6 and 46 through the wiring portion 50, the potential due to the accumulated charges is superimposed on the applied voltage in the light emitting section in which the charges are accumulated, and the discharge start voltage is exceeded. A discharge is generated between 46,
In addition, it is maintained for a predetermined time that is predetermined by wall charges or the like newly generated on the protective film 44. As a result, the phosphor layers 26 and 30 in the selected section are excited to emit light by the ultraviolet rays generated by the gas discharge, and the light is emitted through the front plate 16 or the rear plate to display one image. . Then, a desired image is continuously displayed by changing the data side electrode (writing electrode 48) to which an AC pulse is applied every one cycle of the scanning side electrode (sustaining electrode 46). Become. As is clear from the above description, one of the sustain electrodes 46, which is made independent, functions as a scan electrode between the sustain electrode 46 and the write electrode 48. In between, it is made to function as a sustain electrode (display discharge electrode). Also,
Although illustration is omitted, when an image is observed from only one of the front plate 16 and the rear plate 18, a reflective film made of aluminum or the like is provided on the back surface of the other.

At this time, the discharge is 10 times as shown in FIG.
It is generated between the electrodes 46, 46 separated from each other by a slight distance Gs1 of about 0 (μm), but since the discharge space 24 is continuous in the vertical direction in the figure, it is generated by the discharge. The ultraviolet rays spread to the outside of the discharge electrodes 46, 46 along the longitudinal direction of the discharge space 24, as schematically shown by the one-dot chain line in FIG. Therefore, the discharge space 2
Among the phosphor layers 26, 30 provided in FIG. 4, those located within the range surrounded by the one-dot chain line are excited by the ultraviolet rays generated by the discharge between the electrodes 46, 46 shown in the center of the left end of the figure. It will be made to emit light.

Therefore, the light emitting unit in the PDP 10
The cells are separated by the convex portions between the grooves 22 in the direction perpendicular to the grooves 22, that is, in the left-right direction in the figure, and in the longitudinal direction of the grooves 22, that is, in the vertical direction in the figure, the ultraviolet rays are substantially separated from each other. Is defined by the range covered by. As a result, the center interval of the light emitting units is a color cell pitch of about Pc = 0.3 (mm) in the horizontal direction of the figure, and a dot pitch of about Pd = 0.9 (mm) in the vertical direction of the figure. ing. Note that the RG as in this embodiment
In the PDP 10 for color display consisting of B3 colors,
One pixel is composed of three light emitting sections that are adjacent to each other in the left-right direction of the drawing. Therefore, the pixel pitch is about 0.9 (mm) in both the horizontal direction and the vertical direction.

In this embodiment, the grid-like sheet member 20 is provided with the sustain wiring layer 36 and the write wiring layer 40, and the inner wall surfaces of the grid of the sustain wiring layer 36 face each other. The sustain electrodes 46 and 46 are formed by the portions fixed to the positions, and the write electrodes are formed by the portions of the write wiring layer 40 that are convexly provided in the discharge space in the grid where the sustain electrodes 46 are provided. 48 are constructed. Therefore, since the discharge surfaces are opposed to each other, the discharge voltage between the light emitting sections is
There is an advantage that the variation in (starting voltage and sustain voltage) is reduced and the operation margin is widened.

Moreover, the discharge surfaces of the discharge electrodes 46, 46 are located at the intermediate height position apart from both the front plate 16 and the rear plate 18, and the discharge direction is along their inner surfaces 12, 14. Since it is the direction, the inner surface of the front plate 1
Since the influence of the discharge gas and the ions on the inner surface 14 of the rear plate 2 and the inner surface of the rear plate 2 is small, the phosphor layers 26 and 30 are provided in a wide range on both of them as described above. for that reason,
There is also an advantage that the brightness can be dramatically increased as compared with the case of the surface discharge structure in which the phosphor layer can be provided only on the substrate opposite to the substrate to which the discharge electrode is fixed.

Further, as a result of providing both the sustain electrode 46 and the write electrode 48 on the sheet member 20, there is no limitation on the position and size of the write electrode 48. To be able to prepare
The discharge efficiency, response speed, brightness, etc. are dramatically improved.

By the way, the PDP 10 as described above is manufactured by assembling the sheet member 20, the front plate 16 and the rear plate 18, which are separately processed (or manufactured) according to the process diagram shown in FIG.

In the process of treating the back plate 18, first,
A flat back plate 18 is prepared and a groove 28 is formed in the inner surface 14 of the back plate 18.
Is formed by grinding or the like, or the groove 28 is previously formed.
A back plate 18 on which is formed is prepared. Next, in a phosphor layer forming step 62, three types of phosphor slurries or phosphor pastes corresponding to the three colors of RGB are poured into the groove 28 at a predetermined position determined for each color, a thick film screen printing method, or the like. Then, the phosphor layer 30 is provided by applying and applying a baking treatment at a temperature of, for example, about 450 (° C.).

On the other hand, even in the process of treating the front plate 16,
Similarly, a glass substrate in which the concave groove 22 is formed is prepared, and in the phosphor layer forming step 66, 3 corresponding to the three colors of RGB are prepared.
A kind of phosphor slurry or phosphor paste is poured into the concave groove 22 at a predetermined position determined for each color or the concave groove 2
2 Apply by a technique such as drop printing from above, for example 450
The phosphor layer 26 is provided by performing a baking process at a temperature of about (° C.).

Then, the front plate 16 and the rear plate 18 are superposed on each other with the sheet member 20 prepared in the sheet member preparing step 68 interposed therebetween, and the sealing step 7
By performing a heat treatment at 0, these are hermetically sealed with a sealing agent such as a seal glass which is previously applied to their interfaces. Prior to sealing, the sheet member 20 is fixed to either the front plate 16 or the rear plate 18 using glass frit or the like, if necessary. Then, in the exhaust / gas charging step 72, the air is discharged from the formed airtight container and a predetermined discharge gas is charged therein, so that the P
DP10 is obtained.

In the above manufacturing process, the sheet member manufacturing process 68 is carried out according to the process shown in FIG. 6, for example, to which the well-known thick film printing technique is applied. Less than,
A method of manufacturing the sheet member 20 will be described with reference to FIGS. 7A to 7E and FIGS. 8F to 8H showing the states at the main stage of the manufacturing process.

First, in the substrate preparing step 74, a substrate 76 (see FIG. 7) for thick film printing is prepared, and its surface 78 and the like are subjected to appropriate cleaning treatment. The substrate 76 is one that is hardly deformed or deteriorated during the heat treatment described later. For example, the thermal expansion coefficient is about 87 × 10 ⁻⁷ (/ ° C.) and the softening point is about 740 (° C.). A glass substrate made of soda lime glass or the like having a strain point of about 510 (° C.) is preferably used. The thickness of the substrate 76 is, for example, about 2.8 (mm), and the size of the surface 78 thereof is made sufficiently larger than that of the sheet member 42.

Next, in a peeling layer forming step 80, a peeling layer 82 having high melting point particles bonded with a resin is provided on the surface 78 of the substrate 76 with a thickness dimension of, for example, about 5 to 50 (μm).
The high melting point particles, for example, an average particle size of 0.5 ~ 3 (μm) high softening point glass frit and an average particle size of 0.01 ~ 5
It is a mixture of ceramic filler such as alumina and zirconia (about μm). The high softening point glass is, for example, one having a softening point of about 550 (° C.) or higher, and the softening point of the high melting point particles as a mixture is, for example, 550.
(° C) or higher. Further, the resin is, for example, 350
It is an ethyl cellulose resin that is burned down at about (° C.). The peeling layer 82 includes, for example, an inorganic material paste 84 in which the high melting point particles and the resin are dispersed in an organic solvent such as butyl carbitol acetate (BCA).
For example, as shown in FIG. 7A, it is provided by coating on substantially the entire surface of the substrate 76 using a screen printing method and drying at room temperature, but it can also be provided by applying a coater or a film laminate. FIG. 7B shows a stage in which the release layer 82 is formed in this way. In addition,
In FIG. 7A, 86 is a screen and 88 is a squeegee. In this embodiment, the substrate 76 provided with the release layer 82 corresponds to the support, and the surface of the release layer 82 corresponds to the film forming surface. The substrate preparing step 74 and the release layer forming step 80 support the substrate. Corresponds to the body preparation process.

In the subsequent thick film paste layer forming step 90,
Write wiring layer 40, sustain wiring layer 36, and sustain electrode described above
A thick film conductor paste 92 for forming 46;
Thick film dielectric paste for forming core dielectric layer 32
94 (see FIG. 7A) in the same manner as the inorganic material paste 84.
A predetermined pattern is formed on the release layer 82 by using a screen printing method or the like.
Apply and dry sequentially on the turn. This allows write wiring
Conductor print layer 96 for forming layer 40, core dielectric layer
Thick film dielectric layer 98 for forming 32, sustain wiring layer 3
6, the printed conductor layer 100 for forming 6 and the sustain electrode 46
The printed conductor layer 102 for forming is sequentially formed. Up
The thick film conductor paste 92 is, for example, a conductor such as silver powder.
Material powder, glass frit, and resin in organic solvent
It is dispersed. Also, thick film dielectric paste
94 is a dielectric material such as alumina or zirconia
Powder, glass frit, and resin dispersed in organic solvent
It was made. The above glass frit
Is, for example, PbO-B₂O₃-SiO₂-Al ₂O₃-TiO₂Low softening point of system
The resin and solvent are, for example, inorganic material
The same thing as the strike 84 is used.

At this time, when the wiring layers 36, 40 and the core dielectric layer 32 are formed, the screen 86 has the core dielectric layer 32 and the wiring layers 36, 40 shown in FIG. 1 and FIG. A thick film conductor paste 92 and a thick film dielectric paste 94 having a predetermined thickness dimension which is set so as to obtain the above-mentioned film thickness after firing shrinkage are used. Is applied. On the other hand, when the sustain electrode 46 is formed, for example, by using the screen 86 having an opening slightly protruding from the inner wall surface of the lattice formed by the core dielectric layer 32, the thick film conductor is formed. The paste 92 is applied so as to flow down from the upper surface of the core dielectric layer 32 along the inner wall surface thereof. 7C to 7E show the conductor printed layer 9
6, the dielectric print layer 98, the conductor print layer 100, and the conductor print layer 102 are formed, respectively. In addition,
The conductor print layers 96, 100, 102 have a thickness of about 5 to 10 (μm), and thus are formed by printing once. The dielectric print layer 98 has a thickness of about 30 (μm). Therefore, printing and drying are repeated about three times to form a laminated layer until an appropriate thickness dimension is obtained.

Thick film printing layers 96-102 as described above
After forming and drying the solvent to remove the solvent, a firing step 104
In the above, the substrate 76 is placed in the furnace chamber 106 of a predetermined baking apparatus, and heat treatment is performed at a baking temperature of about 550 (° C.) depending on the types of the thick film conductor paste 92 and the thick film dielectric paste 94. FIG. 8 (f) shows a state during the heat treatment.

In the above heat treatment process, the thick film printing layers 96 to 102 have a sintering temperature of, for example, about 550 (° C.), so that the resin component thereof is burned off, and the dielectric material, the conductor material, and The glass frit is sintered, and the core dielectric layer 32 and the thick film conductor layer (the storage wiring layer 3
6 and the write wiring layer 40), ie the basic part of the sheet member 20 is created. FIG. 8 (g) shows this state. At this time, since the release layer 82 has the inorganic component particles having a softening point of 550 (° C.) or higher as described above, the resin component is burned off, but the high melting point particles (glass powder and ceramics). -Filler) cannot be sintered. Therefore, when the resin component is burned down as the heat treatment progresses, the peeling layer 82 causes the high melting point particles 108 (see FIG. 9).
(Refer to FIG. 3).

FIG. 9 is an enlarged view of a part of the right end of FIG. 8 (g), schematically showing the progress of sintering in the above heat treatment. The particle layer 110 generated by burning away the resin component of the peeling layer 82 is a layer in which the high melting point particles 108 are simply stacked, and the high melting point particles 108 are not bound to each other. Therefore, when the thick film printing layers 96 to 102 contract from the end position before firing shown by the dashed line in the figure, the high melting point particles 108 act like rollers. As a result, even on the lower surface side of the thick film printing layers 96 to 102, a force that hinders the contraction thereof does not act on the lower surface side of the thick film printing layers 96 to 102, so that the thick film printed layers 96 to 102 are contracted similarly to the upper surface side. No warping or the like has occurred.

In this embodiment, the coefficient of thermal expansion of the substrate 76 is almost the same as that of the dielectric material, and the thick film printing layer 96 is used.
Until the sintering of No. 102 starts, that is, in the temperature range in which the resin component is burned off but the binding force of the glass frit, the dielectric material powder and the conductor powder is still small, there is almost no difference in their thermal expansion amounts. On the other hand, when the thick film printing layers 96 to 102 start to be sintered, as described above, the particle layer 110 is used.
Substrate 76 does not hinder its firing shrinkage. Therefore, the thermal expansion of the substrate 76 does not substantially affect the quality of the thick film produced. When the substrate 76 is repeatedly used or the heat treatment temperature becomes high, heat-resistant glass having a higher strain point (for example, a thermal expansion coefficient of 32 × 10
Borosilicate glass with a softening point of approximately 820 (° C) at ^-7 (/ ° C),
Quartz glass or the like having a thermal expansion coefficient of about 5 × 10 ⁻⁷ (/ ° C.) and a softening point of about 1580 (° C.) can be used. Also in this case, since the thermal expansion amount of the substrate 76 is extremely small in the temperature range where the binding force of the dielectric material powder or the like is small, the thermal expansion does not affect the quality of the thick film produced.

Returning to FIG. 6, in the peeling step 112, the generated thick film, that is, the core dielectric layer 32 and the wiring layer 3 are formed.
The laminated body of 6, 40 is peeled from the substrate 76. The particle layer 110 interposed between them is the high melting point particles 108.
However, the peeling process can be easily performed without using any chemicals or devices. At this time, the high melting point particles 108 can be attached to the back surface of the laminate with a thickness of approximately one layer, but the attached particles are removed using an adhesive tape, air blow, or the like, if necessary. The substrate 76 from which the thick film has been peeled off is not likely to be deformed or deteriorated at the firing temperature as described above, and thus is repeatedly used for the same purpose.

Next, in the dielectric paste applying step 114, the peeled laminated body is dipped in the dielectric paste 118 stored in the dipping tank 116, so that the dielectric paste 118 is applied to the entire outer peripheral surface. . This dielectric paste 118 is, for example, PbO-B ₂ O ₃
-SiO ₂ -Al ₂ O ₃ -ZnO-TiO ₂ system or a combination thereof, and a glass powder and a resin such as PVA are dispersed in a solvent such as water. It has a lower viscosity than the paste 94. In addition, as the above-mentioned glass powder, it is possible to use a lead-free softening point of about 630 (° C.) or higher. This is about the same as or higher than the softening point of the one contained in the thick film dielectric paste 94. In addition, the reason why the paste prepared to have a low viscosity is used is to prevent bubbles from being caught during coating and to prevent defects from remaining after firing.
For example, it is gently sunk in the dielectric paste 118 while being placed on the wire net 120 or the like in a horizontal direction, and taken out.

In the subsequent firing step 122, the laminated body taken out from the dipping tank 116 and sufficiently dried is put into a firing furnace and determined according to the kind of glass powder contained in the dielectric paste 118, for example. 650
Heat treatment (firing treatment) is performed at a predetermined temperature of about (° C.).
The firing temperature is, for example, such that the glass powder is sufficiently softened to obtain a dense dielectric layer (covering dielectric layer 42).
The temperature is set sufficiently high for the softening point of the glass powder. Therefore, the coated dielectric layer 42 thus formed has almost no voids or the like due to the grain boundaries between the glass powders, and has a high withstand voltage. In this embodiment, a coating process is composed of the dielectric paste applying process 114 and the firing process 122.

At this time, when the firing step 122 is set to a relatively high temperature, the organic components remaining from the core dielectric layer 32 and the sustain wiring layer 36 located inside are burned off. Generates gas. This gas generates bubbles in the coated dielectric layer 42, but the moving direction of the gas is upward as shown by the arrow in FIG. Therefore, the bubbles generated in the covering dielectric layer 42 are formed exclusively in the upper part of the figure, and the sustain wiring layer 36 is formed.
It does not occur in a portion of the core dielectric layer 32 that functions as a discharge surface, that is, a portion that covers the side surface of the core dielectric layer 32. Therefore, even if the processing temperature in the firing step 122 is high, the coating dielectric layer 42 on the sustain electrode 46 is caused by it.
Since no bubbles are generated inside, it becomes possible to raise the firing temperature to densify and improve the characteristics such as withstand voltage.

Then, in the protective film forming step 124,
The protective film 44 is provided on the surface of the coated dielectric layer 42 by a dipping process and a baking process, or by a thin film process such as sputtering, so that the protective film 44 has a desired thickness. 20 is obtained. Since the protective film 44 is a thin film as described above, it is relatively difficult to form a uniform film by a thick film process such as dipping. However, in this embodiment, since the opposed discharge is generated between the X electrode 46 and the Y electrode 48, the distance between the electrode surfaces is uniform,
Discharge concentration is unlikely to occur regardless of the surface shape of the protective film 44. Therefore, the protective film 44 is not required to be as uniform as when the surface discharge structure is adopted.

Here, in this embodiment, the front plate 16
And the back plate 18 are superposed and fixed to each other
When the DP 10 is manufactured, the sheet member 20 having the sustain wiring layer 36 and the write wiring layer 40 manufactured as described above is fixed to the front plate 16 or the back plate 18, so that the sustain electrode 46 and the write electrode are formed. An embedded electrode 48 is provided in the discharge space 24. Therefore, since the thick film conductor layers for forming the sustain electrodes 46 and the write electrodes 48, that is, the sustain wiring layers 36 and the write wiring layers 40 are provided on the sheet member 20, the front plate 16 and the back plate 18 are provided.
The sustain electrode 4 can be formed by simply disposing the sheet member 20 between
6 and the write electrode 48 can be provided, the front plate 16, the back plate 18, the electrodes 46, 48, etc. due to the heat treatment at the time of forming the front plate 16 and the back plate 18 when the discharge electrodes are provided. It is possible to manufacture the PDP 10 in which the distortion of 10 is suitably suppressed.

Further, in this embodiment, the dielectric printing layer 98 and the dielectric printing layer 98 are formed on the film forming surface constituted by the peeling layer 82 having a melting point higher than the sintering temperature of the thick film conductor paste 92 and the thick film dielectric paste 94. After the conductor printed layers 96, 100 and the like are formed in a predetermined pattern, heat treatment is performed at a temperature at which they are sintered, so that the core dielectric layer 32 is formed.
The sheet member 20 having the thick film conductor layers forming the sustain wiring layer 36 and the write wiring layer 40 on both surfaces thereof is produced. Therefore, the peeling layer 82, which is not sintered at the heat treatment temperature, becomes the particle layer 110 in which only the high melting point particles 108 are lined up due to the resin being burned off, and the generated thick film is not fixed to the substrate 76. , Its surface 7
8 can be easily peeled off. Therefore, the sheet member 20 for forming the discharge electrodes 46 and 48 can be easily manufactured and used for manufacturing the PDP 10.

Further, in the present embodiment, the support to which the thick film pastes 92 and 94 are applied is formed by forming the peeling layer 82 on the surface of the substrate 76, so that the support is supported even after the heat treatment. Since the shape of the peeling layer 82 is maintained,
There is an advantage that the handling of the sheet member 20 after production is easier than in the case where the support is composed of only the sheet. Since the peeling layer 82 is interposed between the thick film printed layers 96 to 102 and the substrate 76, the thick film printed layers 96 to 102 are not constrained at the time of the heat treatment, and thus the substrate 76 is not constrained. The flatness, surface roughness, etc. do not matter. That is, when the substrate surface 78 is warped, the thick film printing layers 96 to 102 are formed with a warp following the surface 78, but the produced sheet member 20 is sufficiently flexible even after firing. Therefore, when placed on a flat surface, the sheet member 20 also becomes flat following the surface.

In this embodiment, the thick film printing layer 9 is also used.
Since Nos. 6 to 102 are formed by using the thick film screen printing method, the device is simple and the waste of materials is small.
It has the advantage of low cost.

Further, according to the present embodiment, since the film is formed using the thick film screen printing method, the so-called wet
There is also an advantage that wastewater treatment is easy because there is no process. Incidentally, in the wet process, if the solution permeates and remains in the film, it may cause outgas after the front plate 16 and the back plate 18 are bonded to form a vacuum container. In order to avoid this, it is necessary to take measures such as increasing the heat resistance temperature of the constituent materials to increase the exhaust gas temperature after hermetically sealing, or prolonging the exhaust time, thereby increasing the process load.

FIG. 11 is a view corresponding to FIG. 3 for explaining the structure of the sheet member 130 used in the PDP of another embodiment of the present invention. In this embodiment, a sustain wiring layer 132 is provided instead of the above sustain wiring layer 40. Sustain wiring layer 132 has a structure similar to that of sustain wiring layer 40, except that sustain electrodes 46 are provided on both sides of each wiring portion 50 in the width direction. That is, in this sheet member 130, the sustain electrodes 46 are provided in all the spaces of the lattice. The size and shape of the sustain electrodes 46 provided on both sides are substantially the same as each other. The sheet member 130 is provided with a write wiring layer 134 instead of the write wiring layer 40. The write wiring layer 134 is also configured in substantially the same manner as the write wiring layer 40, but the write electrode 48 is provided corresponding to the sustain electrodes 46 provided in all the lattice spaces.
Are provided in all the lattice spaces, but the configuration of the other parts is similar to that of the sheet member 20.

In the above-mentioned embodiment, the write electrode 48 is provided so as to project toward the inner peripheral side of the space of the lattice, but in this embodiment, like the sustain electrode 46, the core dielectric layer is provided. It is provided along the inner wall surface of each lattice of 136. That is, it is fixed to the inner wall surface. Therefore, in the PDP configured so that the light emitted through the sheet member 130 is also viewed, the light shielding by the writing electrode 48 is reduced (substantially eliminated), and there is an advantage that the brightness can be further increased. Further, even if the size of the write electrode 48 varies, there is an advantage that the electrode interval with the sustain electrode 46 on the scanning side does not easily change. Note that such a write electrode 48 is
When applying the thick film conductor paste 92 for forming the sustain electrodes 46, a screen 86 having an opening at a position corresponding to the write electrode 48 may be used.

The core dielectric layer 136 is also constructed in substantially the same manner as the core dielectric layer 32 described above, but the lattice portion thereof is along the longitudinal direction of the wiring portion 50 of the sustain wiring layer 132. In the direction, for example, it is provided at a constant center interval of about 0.3 (mm), and in the direction along the longitudinal direction of the wiring portion 52 of the write wiring layer 134, for example, 0.7 (m
It is provided with a constant center interval of about m). That is,
In this sheet member 130, unlike the case of the sheet member 20, the mutual intervals of the constituent parts of the lattice are constant values in both of the above two directions.

The dimensions of the other portions may be the same as those of the above-mentioned sheet member 20, but, for example, the core dielectric layer 1
The height dimension of 36 is about 100 (μm), the width dimension is about 100 (μm), the width dimension of the wiring parts 50 and 52 is about 60 (μm), and the size of the sustain electrode 46 is about 150 (μm). , Height dimension 100 (μ
m), the size of the write electrode 48 is about 100 (μm) in width,
The height dimension is about 100 (μm).

In the PDP in which the sheet member 130 thus configured is used in place of the sheet member 20, the discharge voltage is sequentially applied to all the wiring portions 50 of the sustain wiring layer 132 for scanning, and the scanning is performed. By applying a discharge voltage to a desired one of the wiring portions 52 of the write wiring layer 134 in accordance with the display data in synchronization with the timing, a gas discharge is generated between them and a wall is formed on the protective film 44. Accumulates electric charge. After the selection of the light emitting sections is completed in this way, in the display period, the wiring section 50 of the sustain wiring layer 132 is interlaced and scanned, and one side (for example, front or rear in the scanning direction) of each is scanned. A sustain discharge is generated between them, and a display period consisting of two cycles causes a discharge to be generated in all the light emitting sections (that is, the grid space) corresponding to the data. The present invention is preferably applied to a PDP driving such a 2: 1 interlace.

Although the present invention has been described above in detail with reference to the drawings, the present invention can be implemented in other modes.

For example, in the embodiments, the case where the present invention is applied to the AC type PDP 10 for color display and the manufacturing method thereof has been described. However, the present invention applies to the AC type PDP for monochrome display and the manufacturing method thereof. Applies as well.

Further, although the PDP 10 of the embodiment is of a type in which the phosphor layers 26 and 30 of three colors are provided for full color display, the present invention is provided with a phosphor layer of one color or two colors. The same applies to PDPs.

The thickness of the sheet members 20, 130 and the thicknesses of the core dielectric layers 32, 136 and the wiring layers 36, 40, 132, 134, etc., which compose the sheet members, are handled by the sheet member 20. Is determined according to the mechanical strength required for
It is not limited to the numerical values shown in the embodiments, but may be appropriately determined according to the size and structure of the gas discharge display device.

Further, in the embodiment, the sheet member 2
0, 130 wiring layers 36, 40, 132, 1
Although 34 was completely covered with the covering dielectric layer 42, these may be partially exposed as long as they do not affect the discharge for display or the atmosphere in the airtight container.

Further, in the embodiment, the sheet member 20 is used.
Provided the core dielectric layer 32, the wiring layers 36, 40, etc. by using the thick film screen printing method, the thick film paste layer was "solid" on the film forming surface by using a coater, a film laminate or the like. Can be provided and patterned using a photo process.

Further, in the embodiment, the sheet member 20
Although the support for manufacturing the above was constituted by providing the peeling tank 82 on the surface 78 of the substrate 76, a ceramic green sheet (unfired sheet-shaped ceramics) can also be used as the support. In this case, the composition of the green sheet may be determined so that the heat treatment temperature in the firing step 104 is a temperature at which the ceramic green sheet does not sinter but the resin component contained therein is sufficiently burned out. .

Further, in the embodiment, the sheet member 20 is used.
The counter discharge structure is configured to discharge between the sustain electrodes 46 covering the inner wall surface of the above, but may be configured to a surface discharge structure in which a portion covering the inner wall surface is not provided.

Further, in the embodiment, the write wiring layer 4
The write electrode 4 is formed by the protrusions provided in the wiring portions 52 of 0 and 134 or the portion along the inner wall surface of the core dielectric layer 136.
No. 8 is configured, however, if reliable writing is possible by combination with the scan side sustain electrode 46, it is not necessary to provide such a protruding portion or the like.

Further, in the embodiment, the concave groove 22 is provided in a stripe shape, but if there is no problem in exhaust gas / gas filling after sealing, the discharge space may be partitioned and formed by a grid groove. . Further, in the embodiment, the grooves 22 and 28 are formed in both the front plate 16 and the back plate 18, but
It can be installed on only one side. In that case, in order to avoid contact between the sheet member 20 and the phosphor, it is preferable that the phosphor layer is not provided on the side where the concave groove is not provided.

In the embodiment, the front plate 16 and the rear plate 18 are both made of transparent glass substrates so that the light emission can be observed from either of them, but one of them is made of an opaque material. Alternatively, it may be configured to observe only the light transmitted through the other.

Further, although the phosphor layers 26 and 30 are provided on both the inner surfaces 12 and 14 in the embodiment, only one of them may be provided.

The front plate 16 and the rear plate 18 are
Although the concave grooves 22 and 28 were provided to form the discharge space 24, instead of this, a partition wall made of a thick film insulator or the like is provided at the position where the convex portion between the concave grooves 22 and 28 is present. May be provided.

Further, in the portions which are the boundaries between the discharge spaces 24, that is, in the embodiment, the convex portions between the concave grooves 22 or the back surface of the front plate 16 and the top or base portion of the partition walls when provided are, Glass paste containing black pigment
A black stripe (black mask) may be provided by (thick film insulator) or the like.

Further, in the embodiment, the sheet member 20 is used.
In manufacturing the same, a thick film conductor paste for immediately providing the write wiring layer 40 was printed on the peeling layer 82. However, the write electrode 48 is upwardly formed due to a difference in heat capacity during firing or the like. When there is a possibility of curving toward the front, the dielectric paste is applied in the same pattern prior to the above thick-film conductor paste to provide a thick-film dielectric layer serving as the base of the write wiring layer 40. Good. When the write electrode 48 is provided on the inner wall surface of the core dielectric layer 136 like the sheet member 130, such a measure is unnecessary.

Although not illustrated one by one, the present invention is
Various changes can be made without departing from the spirit of the invention.

[Brief description of drawings]

FIG. 1 is a perspective view showing a color PDP, which is an example of a gas discharge display device of the present invention, with a part cut away.

2 is a diagram illustrating a cross-sectional structure of the PDP of FIG. 1 in a cross section along the longitudinal direction of a groove.

3 is a diagram illustrating a configuration of a sheet member included in the PDP of FIG.

FIG. 4 is a diagram illustrating a formation state of a wiring layer in the sheet member of FIG.

5A to 5C are process diagrams illustrating a method for manufacturing the PDP of FIG.

FIG. 6 is a process diagram illustrating a method of manufacturing a sheet member.

7 (a) to 7 (e) are diagrams showing the states of the substrate and the thick film at the main stage of the manufacturing process of FIG.

8 (f) to 8 (h) are views following FIG. 7 (e) for showing the states of the substrate and the thick film in the main part stage of the manufacturing process of FIG.

FIG. 9 is a diagram for explaining shrinkage behavior in the firing step of FIG.

FIG. 10 is a diagram illustrating a gas escape direction in a firing process of a coated dielectric layer.

FIG. 11 is a diagram illustrating a sheet member used in a PDP according to another embodiment of the present invention.

[Explanation of symbols]

10: PDP 16: Front plate 18: Back plate 20: Sheet member 24: discharge space 32: Core dielectric layer 36: sustain wiring layer 40: write wiring layer 42: Sheet member 46: sustaining electrode 48: Writing electrode

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Susumu Sakamoto             2160 Yatsunami, Sanjo, Yasu-cho, Asakura-gun, Fukuoka Prefecture             Address Noritake Electronics Co., Ltd. Yasu Factory             Within F-term (reference) 5C027 AA02 AA06 AA09                 5C040 FA01 FA04 GA02 GA03 GB03                       GB14 GC12 GC13 GC19 GD09                       GF03 GF06 GF19 GG03 GG04                       JA12 JA22 JA28 LA05 LA11                       MA23

Claims (12)

[Claims] 1. A transparent first substrate, a second substrate arranged in parallel at a predetermined distance from the first substrate, and the first substrate.
A plurality of discharge spaces provided between the substrate and the second substrate and formed in an airtight space in which a predetermined gas is sealed, and a plurality of discharge spaces, each of which is covered with a dielectric for generating a gas discharge. A plurality of pairs of sustain electrodes and a plurality of write electrodes capable of generating a gas discharge between the sustain electrodes to select a light emitting section, and the plurality of pairs of sustain electrodes generate a gas discharge. An AC gas discharge display device of a type for observing light through the first substrate, comprising: a core dielectric layer made of a thick film dielectric having a predetermined thickness dimension in a grid pattern; and a grid of the core dielectric layer. A first thick film conductor layer formed of a plurality of first conductors, which are laminated on one surface so as to extend in parallel with each other along one direction, and a portion located between intersections of the lattices functions as the sustain electrode. A grid of the core dielectric layer A second thick film conductor layer composed of a plurality of second conductors, which are laminated on the other surface so as to extend in parallel with each other in the other direction, and the portion located between the intersections of the lattices functions as the write electrode; A sheet dielectric disposed between the first substrate and the second substrate in parallel therewith, and a covering dielectric layer comprising a thick film dielectric covering the first thick film conductor layer. Characteristic gas discharge display device. 2. The first thick film conductor layer covers a part of an inner wall surface of a lattice of the core dielectric layer and is mutually disposed in a portion located between the intersections of the first conductors adjacent to each other. 2. A structure comprising a facing portion fixed so as to face each other.
AC type gas discharge display device. 3. The AC type gas discharge display device according to claim 2, wherein the facing portions are provided on both sides in the width direction of each of the plurality of first conductors. 4. The second thick film conductor layer is provided with a protrusion that protrudes toward the inner peripheral side of the discharge space in which the facing portion is provided, of the lattice of the core dielectric layer. Alternatively, the AC type gas discharge device according to claim 3. 5. A plurality of recessed grooves extending along the longitudinal direction of the plurality of second conductors are provided at positions between the plurality of second conductors, the facing surfaces of the first substrate and the second substrate. The AC type gas discharge display device according to any one of claims 1 to 4, which is provided in at least one of the above. 6. A transparent first substrate, a second substrate arranged in parallel at a predetermined distance from the first substrate, and the first substrate.
A plurality of discharge spaces provided between the substrate and the second substrate and formed in an airtight space in which a predetermined gas is sealed, and a plurality of discharge spaces, each of which is covered with a dielectric for generating a gas discharge. A plurality of pairs of sustain electrodes and a plurality of write electrodes capable of generating a gas discharge between the sustain electrodes to select a light emitting section, and the plurality of pairs of sustain electrodes generate a gas discharge. A method of manufacturing an AC type gas discharge display device of a type in which light is observed through the first substrate by stacking the first substrate and the second substrate and hermetically sealing them together, wherein A core dielectric layer formed of a thick film dielectric having a predetermined thickness dimension, and laminated on one surface of the core dielectric layer so as to extend in parallel to each other along one direction of the grid and located between intersections of the grid. The portion to be the sustain electrode And a first thick film conductor layer composed of a plurality of first conductors for functioning together, and laminated on the other surface so as to extend parallel to each other along the other direction of the grid of the core dielectric layer, and A second thick-film conductor layer made of a plurality of second conductors for causing the portion located between the intersections to function as the write electrode, and a coated dielectric made of a thick-film dielectric covering the first thick-film conductor layer. A method of manufacturing an AC type gas discharge display device, comprising a sheet member fixing step of fixing a sheet member having a layer on one inner surface of one of the first substrate and the second substrate. 7. A support preparing step of preparing a support having a film forming surface composed of a high melting point particle layer in which particles having a melting point higher than a predetermined first temperature are bonded with a resin, A lower conductor paste film, in which constituent particles of a thick film conductor material that can be sintered at one temperature are bonded with a resin, is provided on the film forming surface on one of the first thick film conductor layer and the second thick film conductor layer. A lower conductor paste film forming step of forming a corresponding plurality of divided predetermined patterns, and a dielectric paste film obtained by bonding particles of a thick film dielectric material sintered at the first temperature with a resin. A dielectric paste film forming step of laminating and forming on the surface of the lower conductor paste film in a grid pattern corresponding to the core dielectric layer, and constituent particles of a thick film conductor material sintered at the first temperature. The upper side made of resin The conductor paste film is the first
An upper conductor paste film forming step of laminating and forming on the surface of the dielectric paste film in a predetermined pattern divided into a plurality of portions corresponding to the other of the thick film conductor layer and the second thick film conductor layer, and the support. By heat treatment at the first temperature,
The lower conductor paste film, the upper conductor paste film, and the dielectric paste film are sintered without sintering the high-melting point particle layer, and the lower conductor paste film,
The sheet member is manufactured by a process including a firing process of forming the first thick film conductor layer, the second thick film conductor layer, and the core dielectric layer from the upper conductor paste film and the dielectric paste film. 7. The method for manufacturing an AC type gas discharge display device according to claim 6. 8. The first thick film conductor layer covers a part of an inner wall surface of a lattice of the core dielectric layer at a portion located between the intersections of the first conductors adjacent to each other and mutually. It has a facing portion fixed so as to face each other, and is formed by resin-bonding constituent particles of a thick-film conductor material to be sintered at the first temperature on the inner wall surface of the grid of the dielectric paste film. The method for manufacturing an AC type gas discharge display device according to claim 7, further comprising a step of forming a wall surface conductor paste film in a pattern corresponding to the facing portion. 9. The method for manufacturing an AC type gas discharge display device according to claim 7, wherein in the support preparing step, the high melting point particle layer is formed on a surface of a predetermined substrate. 10. The method of manufacturing an AC type gas discharge display device according to claim 9, wherein the substrate is not deformed at the firing temperature. 11. A thick film dielectric paste is applied to the outer peripheral side of the core dielectric layer provided with the first thick film conductor layer and the second thick film conductor layer on the one surface and the other surface, respectively, and heated. 7. The method of manufacturing an AC type gas discharge display device according to claim 6, further comprising a coating step of providing the coated dielectric layer by performing a treatment. 12. The thick film screen printing method is used to form the lower conductor paste film, the upper conductor paste film, the coated conductor paste film, and the dielectric paste film, respectively. Item 12. A method of manufacturing an AC type gas discharge display device according to any one of items 11.