JP2012209046A - Plasma display panel and manufacturing method of the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to reduce a thickness of front surface side substrate to a degree that a problem of view angle dependency is solved, while avoiding potential for weakness due to thinness, by arranging an organic color filter (CF) layer in a manner capable of solving a problem of heat resistance.SOLUTION: A plasma display panel includes: a front plate 22 provided with a display electrode pair 5 on a front face side substrate 23; a back plate 8 provided with an address electrode 10 on a back face side substrate 9, ribs 12 zoning discharge cells each provided on an intersection of the address electrode and the display electrode pair, and a phosphor layer 13 provided between the ribs; an organic CF layer 19 arranged on the front plate corresponding to the phosphor layer of each discharge cell; and a frame-like seal layer 18 sealing between the front plate and the back plate. On a discharge space side of the front face side substrate, CF grooves corresponding to the space between the ribs of the back plate are provided. Apertures of the CF grooves are sealed with a lid layer composed of a transparent dielectric substance and an organic color filter layer is provided in the CF grooves.

Description

  The present invention relates to an AC-driven plasma display panel (hereinafter sometimes abbreviated as “PDP”), and more particularly to a PDP having an improved front plate structure suitable for the arrangement of an organic color filter layer.

  An example of the configuration of an AC surface discharge type PDP, which is a typical AC drive type PDP, is shown in FIGS. FIG. 5 is a perspective view showing a part of the PDP in a state where the front plate 1 and the back plate 8 are separated. 6 shows a state in which the front plate 1 and the back plate 8 of FIG. 5 are combined, and is a cross-sectional view along the direction across the display electrode pair 5 in FIG.

  The front plate 1 has a configuration in which a display electrode pair 5 including a scanning electrode 3 for performing surface discharge and a sustaining electrode 4 is arranged in parallel on the surface of a front substrate 2 made of transparent, insulating glass or the like. . Scan electrode 3 and sustain electrode 4 are each composed of transparent electrodes 3a, 4a formed on the surface of front substrate 2 and bus electrodes 3b, 4b formed thereon. The bus electrodes 3b and 4b are made of, for example, silver (Ag) and a glass frit material as a binding material thereof. A front-side dielectric layer 6 is formed so as to cover the display electrode pair 5, and a protective film 7 is formed thereon.

  On the other hand, the back plate 8 has a data electrode 10 for writing image data on the surface of a back side substrate 9 made of transparent, insulating glass or the like, orthogonal to the display electrode pair 5 of the front side substrate 2. And the upper surface thereof is covered with the back-side dielectric layer 11. Ribs 12 constituting ribs are formed on the back-side dielectric layer 11. The ribs 12 have a cross beam shape formed by vertical ribs 12a formed extending in a direction parallel to the data electrode 10 and horizontal ribs 12b formed in a direction orthogonal thereto. Each pixel is defined by a region surrounded by the vertical ribs 12a and the horizontal ribs 12b. In each pixel region, red, green, and blue phosphor layers 13r, 13g, and 13b are applied and formed on the side surfaces of the ribs 12 and the surface of the back-side dielectric layer 11 corresponding to the data electrodes 10, respectively. Yes.

  The front plate 1 and the back plate 8 face each other so that the display electrode pair 5 and the data electrode 10 form a matrix. A space surrounded by the vertical ribs 12a and the horizontal ribs 12b between the front plate 1 and the back plate 8 is a discharge space 14 of each pixel. Corresponding to each discharge space 14, the display electrode pair 5 and the data electrode 10 are three-dimensionally crossed to form a discharge cell 15. A black stripe 16 is formed between the display electrode pair 5 of the front plate 1 so as to face the top of the lateral rib 12b.

  The outer periphery of the front plate 1 and the back plate 8 is sealed with a sealing material such as glass frit (not shown), and a discharge gas composed of a mixed gas of neon (Ne) and xenon (Xe) is present in the discharge space 14. It is enclosed. For example, a discharge gas having a Xe ratio of 10% is used, and the discharge gas is sealed at a pressure of about 450 Torr (about 60 kPa).

  In the AC drive type PDP having such a configuration, the front-side dielectric layer 6 formed on the display electrode pair 5 exhibits a specific current limiting function and thus has a long life. The protective film 7 is provided to prevent the front-side dielectric layer 6 from being sputtered by plasma discharge, and a material excellent in sputtering resistance, for example, magnesium oxide (MgO) is often used.

  On the other hand, in the PDP, an ND filter (a neutral density filter) is attached to the panel in order to improve the bright place contrast. By suppressing reflection of external light by this ND filter, the PDP can obtain a good black display even in a bright environment. On the other hand, since the ND filter cuts off the light emission from the inside of the panel, it also causes a decrease in the setting efficiency of the PDP.

  In order to solve this problem, it is known to use a color filter (hereinafter also abbreviated as CF) corresponding to each of the RGB phosphors of the panel. When the CF layer is provided, the effect of improving the color purity and the effect of suppressing the reflection of external light to the same level as the ND filter can be obtained. Furthermore, light emission from the inside of the panel is only about 30% to 40% in the case of the ND filter, whereas 70% to 80% is transmitted in the case of the CF layer. A significant increase in set efficiency can be expected. However, this is a case where an organic CF layer using an organic pigment with good optical characteristics used in liquid crystal or the like is used.

  On the other hand, when providing a CF layer, it is necessary to arrange the CF layer as close as possible to the light source. The light source in the PDP is the surface of the protective film 7 of the front plate 1, and in the case of a cell size equivalent to 42FHD, the CF layer is disposed within a distance of about 50 μm or less from the surface of the protective film 7 depending on the rib width. It is desirable. When the distance is longer than this, there is no problem when viewed from the front, but when viewed from an oblique direction, there is a problem that luminance decreases or color shift occurs depending on the viewing angle.

  That is, the light emitted from the light source spreads isotropically, but when viewed from the front, the position of the light emission and the position of the CF layer are the same, so that the colored light is transmitted to the outside through the CF layer of the same color. On the other hand, when the viewpoint is inclined, a state in which light is viewed through the CF layers of other colors may occur. In this case, different color light is cut by the CF layer, and it appears that no light is emitted. When the distance between the light emitting portion and the CF layer is short, the emitted light passes only through the CF layer of the corresponding color, so that viewing angle dependency does not occur.

  As a first conventional example of a PDP using a CF layer, FIG. 7 shows a cross-sectional structure of a product example in which an inorganic CF layer using an inorganic pigment is disposed inside a panel such as the surface of a PDP substrate or on an electrode. In the configuration of FIG. 7, the back plate 8 has the same structure as the conventional example. The front plate 1 has a structure in which an inorganic CF layer 17 is embedded in the front-side dielectric layer 6. The CF layer cells 17r, 17g, and 17b of each color included in the inorganic CF layer 17 are arranged corresponding to the phosphor layers 13r, 13g, and 13b in each discharge space. A space between the front plate 1 and the back plate 8 is sealed with a seal layer 18.

  Since the inorganic CF layer 17 has a high heat resistance of 500 ° C. or higher, such an arrangement is possible and it is easy to deal with the production of the PDP. In this case, even when the distance to the light source is far, the viewing angle dependency is not a problem because it is about 20 to 40 μm of the front dielectric layer 6. The viewing angle dependency occurs when the distance between the light source and the CF layer is long. That is, the light emitted from the light source spreads isotropically, but when viewed from the front, the position of the light emission and the position of the CF layer are the same, so that the colored light is transmitted to the outside through the CF layer of the same color. On the other hand, when the viewpoint is inclined, a state in which light is viewed through the CF layers of other colors may occur. In this case, different color light is cut by the CF layer, and it appears that no light is emitted. When the distance between the light emitting portion and the CF layer is short, the emitted light passes only through the CF layer of the corresponding color, so that viewing angle dependency does not occur.

  However, the inorganic CF layer 17 does not have good optical characteristics as compared with the organic CF layer using an organic pigment, and it is difficult to greatly improve the light utilization efficiency.

  On the other hand, an organic CF layer used in a liquid crystal display or the like is suitable for PDP because of its very good optical characteristics. FIG. 8 shows a second conventional PDP using an organic CF layer. In this case as well, as in the case of the inorganic CF layer 17, it is conceivable to dispose an organic CF layer inside the panel. The configuration in FIG. 8 is obtained by replacing the inorganic CF layer 17 in FIG. Therefore, the distance between the light source and the organic CF layer 19 is not a problem. However, since the heat resistance temperature of the organic CF layer 19 is about 250 ° C., it cannot be applied to a manufacturing process using a low melting point glass material usually used in PDP (a process using a low melting point glass has a heat resistance of about 500 to 600 ° C. Need sex). Therefore, it is necessary to drastically change the dielectric material, the sealing material, and the manufacturing process thereof. At present, it is difficult to dispose the organic CF layer inside the PDP with the configuration shown in FIG.

  Therefore, as a PDP of the third conventional example, a configuration in which a panel is manufactured using a very thin glass substrate (dielectric thin plate, microsheet) as a front plate and an organic CF layer is formed after forming the panel is disclosed in, for example, Patent Literature 1-3. Since a high-temperature process can be dispensed with after paneling, an organic CF layer with low heat resistance can be used with this configuration.

  As shown in FIG. 9, in the PDP of the third conventional example, a microsheet 20 is used instead of the front-side dielectric layer 6 of the conventional example. The protective film 7 is formed on the discharge space side of the microsheet 20, and the display electrode pair 5 is provided on the non-discharge space side (front side). The space between the microsheet 20 and the back side substrate 9 is sealed with a sealing material 18 such as low-melting glass. Thus, by sealing the microsheet 20 to the back side substrate 9, the front side (non-discharge space side) of the microsheet 20 is not exposed to high temperatures during the manufacturing process after sealing. . Therefore, the low heat resistance problem of the organic CF layer 19 can be solved by bonding the organic CF film 21 including the organic CF layer 19 on the display electrode pair 5 after sealing.

Japanese Patent Laid-Open No. 9-259769 Japanese Patent No. 3849735 JP 11-339666 A

  In the case of the structure using the organic CF layer together with the microsheet as in the conventional example, it is necessary to solve the following problems. That is, in order to avoid the problem of viewing angle dependency, it is desirable to dispose the CF layer within a distance of about 50 μm or less from the protective film surface as described above. In order to make the distance to the light source 50 μm or less, it is necessary to make the microsheet 50 μm or less. Further, in this case, the microsheet is used as the dielectric layer, and the thickness of the dielectric layer is preferably 30 μm or less.

  However, it is very difficult to create a uniform and large microsheet of 30 μm or less, and the risk of breakage in the transport process or the sealing process becomes very large, so a configuration using such a microsheet is adopted. It is difficult.

  In consideration of the above, the present invention arranges an organic color filter (CF) layer so as to avoid the problem of heat resistance, while avoiding the fear of vulnerability due to thinness, An object of the present invention is to provide a plasma display panel that can reduce the thickness of the substrate to such an extent that the problem of viewing angle dependency is solved.

  In order to solve the above-described problems, a plasma display panel according to the present invention includes a front plate in which a plurality of display electrode pairs including scan electrodes and sustain electrodes are provided on a front substrate, and the display electrode pair and a three-dimensional image on a rear substrate. A plurality of intersecting data electrodes are provided, and ribs that partition discharge cells are provided at intersections of the data electrodes and the display electrode pairs, and a phosphor layer is provided between the ribs to form a discharge space. A back plate joined to the front plate, an organic color filter layer formed on the front plate using an organic pigment corresponding to the phosphor layer of each discharge cell, the front plate and the back surface A sealing layer that is provided in a frame shape in an outer peripheral region between the plates, and seals between the front plate and the back plate, and between the ribs of the back plate on the discharge space side of the front substrate. Corresponding C Grooves are provided, are opened surface blockade of the CF groove by a cover layer made of a transparent dielectric, wherein the organic color filter layer in the CF groove.

  A first manufacturing method of the present invention is a method of manufacturing a plasma display panel having the above-described configuration, in which the back plate is manufactured, the surface on the discharge space side of the front side substrate or the front side of the lid layer. A concave portion for forming the CF groove is provided on the surface facing the substrate, and the opening surface of the CF groove is sealed by joining the lid layer and the front side substrate, and then the discharge space of the lid layer is sealed. Providing the display electrode pair, a dielectric layer covering the display electrode pair, and a protective layer covering the dielectric layer on the side surface to produce the front plate, the front plate and the back plate, The discharge space is formed and sealed by a sealing layer, and then the organic color filter pigment is injected into the CF groove from the end of the CF groove to form the organic color filter layer.

  A second manufacturing method of the present invention is a method for manufacturing the plasma display panel having the above-described configuration, in which the back plate is manufactured and the surface on the discharge space side of the front side substrate or the front side of the lid layer. A concave portion for forming the CF groove is provided on a surface facing the substrate, the display electrode pair is provided on a surface of the lid layer facing the front substrate, and the lid layer and the front substrate are joined. After sealing the opening surface of the CF groove by the above, a protective layer is provided on the surface of the lid layer on the discharge space side to produce the front plate, and the front plate and the back plate are separated by the seal layer. A discharge space is formed and sealed, and then an organic color filter pigment is injected into the CF groove from an end of the CF groove to form the organic color filter layer.

  According to the said structure, an organic CF layer can be formed by inject | pouring an organic CF pigment from the edge part of CF groove | channel. Therefore, it is possible to form an organic CF layer after providing a CF groove and a lid layer on the front substrate and completing a panel by a normal process. This eliminates the need for high-temperature processing in the step after the organic CF layer is provided, and it is easy to solve the problem of low heat resistance of the organic CF layer.

  In addition, even if the lid layer thickness is sufficiently thin so that viewing angle dependency does not become a problem, there are many cases where it is handled in the state of being held on the front side substrate in the manufacturing process. The risk of the lid layer being damaged is sufficiently reduced.

Sectional drawing of PDP in Embodiment 1 Plan view of the PDP Sectional drawing of PDP in Embodiment 2 Sectional drawing of the 1st structural example of PDP in Embodiment 3. FIG. The perspective view which showed a part of PDP of a prior art example in the state which isolate | separated the front plate 1 and the back plate 8. Sectional drawing which shows the state by which the front plate 1 and the back plate 8 of FIG. 5 were united. Sectional drawing which shows the 1st prior art example of PDP which provided CF layer Sectional drawing which shows the 2nd prior art example of PDP which provided CF layer Sectional drawing which shows the 3rd prior art example of PDP which provided CF layer

  The plasma display panel of the present invention can take the following aspects based on the above-described configuration.

  That is, the CF groove may be formed as a recess on the surface of the front substrate.

  The lid layer may be formed by laminating and firing a sheet dielectric on the surface of the front substrate on which the CF groove is formed.

  Or the said cover layer can be set as the structure formed by joining thin glass to the said front side board | substrate.

  The lid layer may be formed by bonding thin glass to the front substrate, and the CF groove may be formed as a recess on the surface of the thin glass facing the front substrate.

  Further, the display electrode pair, a dielectric layer covering the display electrode pair, and a protective layer covering the dielectric layer may be provided on the surface of the lid layer on the discharge space side.

  Further, the display electrode pair may be provided on the opposite side of the thin glass from the discharge space, and a protective layer may be provided on the discharge space side of the thin glass.

  The plasma display panel manufacturing method of the present invention can take the following aspects based on the above-described configuration.

  That is, it is preferable that the end portion of the CF groove is positioned outside the region where the seal layer is formed.

  The lid layer is preferably formed by bonding thin glass to the front substrate, and after the bonding, the thin glass is processed to be thin.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Embodiment 1>
The structure of the PDP in the first embodiment will be described with reference to FIGS. 1 and 2 are a sectional view and a plan view, respectively, showing an outline of the structure of the PDP in the first embodiment.

  The structure of the back plate 8 in the PDP of the present embodiment is the same as the conventional example shown in FIGS. The back plate 8 is configured by providing a plurality of data electrodes on the back side substrate 9, but the data electrodes are not shown in FIGS. As shown in FIG. 1, a back-side dielectric layer 11 and ribs 12 that partition discharge cells are provided on the data electrodes, and phosphor layers 13 r, 13 g, and 13 b of the respective colors are provided between the ribs 12. ing. However, only the range in which the rib 12 in FIG. 2 is simply formed is shown, and the specific illustration is omitted.

  The PDP according to the present embodiment is characterized by the configuration of the front plate 22. CF grooves 23 a are formed on the discharge space side (lower surface) of the front substrate 23 used for the front plate 22 so as to correspond to the ribs 12 of the back plate 8. However, the CF groove 23a is disposed only within a range corresponding to the display area 24 (FIG. 2) where the display is actually performed. A cover layer 25 made of a transparent dielectric material is disposed on the discharge space side of the CF groove 23a. The opening surface on the discharge space side of the CF groove 23a is sealed by the cover layer 25, and only the end portion is opened to the outside. It is in a state. An organic CF layer 19 is formed in the CF groove 23a. The colors of the CF layer cells 19r, 19g, and 19b correspond to the emission colors of the phosphor layers 13r, 13g, and 13b of the discharge cells partitioned by the ribs 12, respectively.

  Similar to the conventional example shown in FIGS. 5 to 6, the display electrode pair 5, the front-side dielectric layer 6, and the protective film 7 are disposed on the discharge space side of the lid layer 25. The display electrode pair 5 includes the transparent electrode and the bus electrode shown in FIGS. 5 and 6, but the illustration is simplified in FIG. 1 and the drawings described below. The front plate 22 and the back plate 8 are sealed by a seal layer 18 provided in a frame shape in the outer peripheral region of the front plate 22. The end of the CF groove 23a is disposed so as to extend outside the region where the seal layer 18 is formed when the front plate 22 and the back plate 8 are sealed (see FIG. 2).

  According to the above configuration, the organic CF layer 19 can be formed by injecting an organic CF pigment from the end of the CF groove 23a. Therefore, after forming the CF groove 23a on the front substrate 23 and providing the cover layer 25, the normal front plate manufacturing process, assembly with the back plate 8, sealing / exhaust processes are performed, and the panel is completed. The CF layer 19 can be formed. Thereby, in the manufacturing process after the organic CF layer 19 is provided, it is possible to avoid high-temperature processing such as when the sealing layer 18 is formed using the low-melting glass sealing material. As a result, the low heat resistance of the organic CF layer 19 is not a problem, and the organic CF layer 19 can be easily adopted.

  Further, the total thickness t (FIG. 1) of the thickness of the lid layer 25 in the display region 24, the thickness of the front-side dielectric layer 6, and the thickness of the protective film 7 is sufficient to be, for example, 50 μm or less. If the thickness is adjusted to be thin, the distance between the organic CF layer 19 and the light source can be shortened to such an extent that viewing angle dependency does not become a problem.

  Since the lid layer 25 is extremely thin, it is easily damaged by itself, but in this embodiment, it is in a state of being held by being bonded to the front side substrate 23, so that it has sufficient strength against external force and is easy to handle. is there. The lid layer 25 can be formed by laminating and firing a sheet dielectric on the surface of the front substrate 23 on which the CF groove 23a is formed. Alternatively, the lid layer 25 may be formed by bonding a thin glass to the surface of the front substrate 23 on which the CF groove 23a is formed.

  In order to produce the PDP having the above-described configuration, sand blasting, chemical etching, embossing, or the like can be used as a step of forming the CF groove 23a in the front substrate 23. In the process, the end of the CF groove 23a is positioned outside the seal layer 18 as shown in FIG. After the CF groove 23a is formed, a sheet dielectric (green sheet) is laminated on the entire front substrate 23 and fired. This dielectric sheet becomes the lid layer 25, and the front side substrate 23 having an injection hole for injecting an organic CF pigment for forming the organic CF layer 19 is produced.

  When the cover layer 25 is formed by pasting a thin glass instead of the sheet dielectric, the thin glass is etched (chemical, CMP, sambra, etc.) after the cover layer 25 is formed (after bonding). Thus, a step of reducing the thickness can be performed. Thereby, handling can be facilitated by using a thin glass plate having a sufficient thickness before joining.

<Embodiment 2>
The structure of the PDP in the second embodiment will be described with reference to FIG. FIG. 3 is a sectional view showing an outline of the structure of the PDP in the present embodiment. In the configuration of the first embodiment, the CF groove 23a is provided by recessing the surface of the front side substrate 23. In the present embodiment, the CF groove is provided by a different configuration. .

  That is, as shown in FIG. 3, in the front plate 26 of the present embodiment, a normal front substrate 2 is used and thin glass is used as the lid layer 27. A CF groove 27a is formed on the surface of the thin glass sheet of the cover layer 27 facing the front substrate 2 by performing a concave process. The thin glass with the CF groove 27a formed is bonded to the front substrate 2 to form the lid layer 27, whereby the opening surface (non-discharge space side) of the CF groove 27a is sealed, and only the end is opened to the outside. The obtained state is obtained.

  As in the case of the first embodiment, the thin glass of the lid layer 27 may be subjected to a process of reducing the thickness by etching or the like (chemical, CMP, sambra, etc.) after bonding to the front substrate 2. it can. Thereby, handling can be facilitated by using a thin glass plate having a sufficient thickness before joining.

  After the lid layer 27 is bonded, the display electrode pair 5, the front-side dielectric layer 6, and the protective layer 7 are provided on the surface of the lid layer 27 on the discharge space side to form the front plate 26, and the space between the back plate 8 is sealed. To wear. Thereafter, an organic CF pigment is injected into the CF groove 27 a to form the organic CF layer 19.

<Embodiment 3>
The structure of the PDP in the third embodiment will be described with reference to FIG. FIG. 4 is a sectional view showing an outline of the structure of the PDP in the present embodiment. In the front plate 28 of the present embodiment, a configuration using thin glass like the lid layer 25 of the first embodiment or the lid layer 27 of the second embodiment is used. As shown in FIG. 4, the display electrode pair 5 is provided on the non-discharge space side of the lid layer 29 using thin glass, that is, on the side facing the front substrate 23.

  In the configuration of FIG. 4, a CF groove 23 a is provided by performing a concave process on the surface of the front substrate 23 on the discharge space side. An extraction electrode layer 5 a is formed at the end of the front substrate 23 on the discharge space side. The lid layer 29 on which the display electrode pair 5 is formed is bonded to the front substrate 23 so as to cover the CF groove 23a, and the end of the display electrode pair 5 is connected to the extraction electrode layer 5a.

  A protective layer 7 is provided on the discharge space side of the lid layer 29. Thus, the front-side dielectric layer 6 in the first and second embodiments is not formed, and the lid layer 29 functions as a dielectric layer. Thereby, the process of forming the dielectric layer can be omitted, and since thin glass is used as the dielectric layer, there is no problem of pinholes and the reliability as the dielectric layer is improved.

  As in the case of the first embodiment, the thin glass sheet of the lid layer 29 can be subjected to a process of reducing its thickness by etching or the like (chemical, CMP, sambra, etc.) after bonding to the front substrate 23. . After sealing between the front plate 28 and the back plate 8, an organic CF pigment is injected into the CF groove 23a to form the organic CF layer 19.

  In addition, as shown in FIG. 3, a configuration in which the CF groove 27 a is formed in the lid layer 27 can also be adopted. In that case, the display electrode pair 5 is provided on the CF groove 27a. Similar to the configuration of FIG. 4, the protective layer 7 is provided on the discharge space side of the lid layer 27 without providing the front-side dielectric layer 6.

<Matters common to each embodiment>
The depth of the CF grooves 23a and 27a is determined in consideration of the optical characteristics and the process of injecting the organic CF pigment. If it is too deep, there will be a problem of viewing angle. If it is too shallow, it becomes difficult to inject the organic CF pigment.

  According to the PDP of the present invention, it becomes easy to provide an organic CF layer, and the thickness of the front side substrate is reduced to such an extent that the problem of viewing angle dependency is solved without causing fear of vulnerability. This is useful as a wall-mounted TV or a large monitor.

1, 22, 26, 28 Front plate 2, 23 Front side substrate 3 Scan electrode 3a, 4a Transparent electrode 3b, 4b Bus electrode 4 Sustain electrode 5 Display electrode pair 6 Front side dielectric layer 7 Protective film 8 Back plate 9 Back side Substrate 10 Data electrode 11 Back side dielectric layer 12 Partition 12a Vertical partition 12b Horizontal partition 13r, 13g, 13b Phosphor layer 14 Discharge space 15 Discharge cell 16 Black stripe 17 Inorganic CF layers 17r, 17g, 17b, 19r, 19g, 19b CF layer cell 18 Seal layer 19 Organic CF layer 20 Microsheet 21 Organic CF film 23a, 27a CF groove 24 Display area 25, 27, 29 Lid layer

Claims (11)

A front plate provided with a plurality of display electrode pairs consisting of scan electrodes and sustain electrodes on a front substrate;
A plurality of data electrodes that are three-dimensionally crossed with the display electrode pair are provided on the back side substrate, and ribs that respectively define discharge cells are provided at intersections of the data electrodes and the display electrode pair, and a phosphor layer between the ribs A rear plate joined to the front plate to form a discharge space,
An organic color filter layer formed on the front plate corresponding to the phosphor layer of each discharge cell and formed using an organic pigment;
Provided in a frame shape in an outer peripheral region between the front plate and the back plate, and a sealing layer sealing between the front plate and the back plate,
CF grooves corresponding to the ribs of the back plate are provided on the discharge space side of the front side substrate, and the opening surface of the CF grooves is sealed with a cover layer made of a transparent dielectric,
The plasma display panel, wherein the organic color filter layer is provided in the CF groove.   The plasma display panel according to claim 1, wherein the CF groove is formed as a recess in the surface of the front substrate.   The plasma display panel according to claim 2, wherein the lid layer is formed by laminating and firing a sheet dielectric on the surface of the front substrate on which the CF groove is formed.   The plasma display panel according to claim 2, wherein the lid layer is formed by bonding thin glass to the front substrate. The lid layer is formed by bonding a thin glass to the front substrate.
The plasma display panel according to claim 1, wherein the CF groove is formed as a recess on a surface of the thin glass facing the front substrate.   The display electrode pair, a dielectric layer that covers the display electrode pair, and a protective layer that covers the dielectric layer are provided on a surface of the lid layer on the discharge space side. The plasma display panel according to item.   The plasma display panel according to claim 4, wherein the display electrode pair is provided on a side of the thin glass opposite to the discharge space, and a protective layer is provided on the discharge space side of the thin glass. A method for manufacturing the plasma display panel according to claim 1, comprising:
Making the back plate,
By providing a recess for forming the CF groove on the surface of the front substrate on the discharge space side or the surface of the lid layer facing the front substrate, and joining the lid layer and the front substrate Sealing the opening of the CF groove;
Then, on the surface on the discharge space side of the lid layer, the front plate is prepared by providing the display electrode pair, a dielectric layer covering the display electrode pair, and a protective layer covering the dielectric layer,
The front plate and the back plate are sealed by forming the discharge space with the seal layer,
Then, an organic color filter pigment is injected into the CF groove from the end of the CF groove to form the organic color filter layer. A method for manufacturing the plasma display panel according to claim 1, comprising:
Making the back plate,
A recess for forming the CF groove is provided on a surface of the front substrate on the discharge space side or a surface of the lid layer facing the front substrate.
Providing the display electrode pair on a surface of the lid layer facing the front substrate;
After sealing the opening surface of the CF groove by bonding the lid layer and the front substrate, the front plate is produced by providing a protective layer on the surface of the lid layer on the discharge space side,
The front plate and the back plate are sealed by forming the discharge space with the seal layer,
Then, an organic color filter pigment is injected into the CF groove from the end of the CF groove to form the organic color filter layer.   The method for manufacturing a plasma display panel according to claim 8 or 9, wherein an end of the CF groove is positioned outside a region where the seal layer is formed. The lid layer is formed by bonding thin glass to the front substrate.
The manufacturing method of the plasma display panel of Claim 8 or 9 which performs the process which thins the said sheet glass after the said joining.

Images