JP2007026793A - Plasma display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To realize a highly efficient plasma display panel (PDP) in which a discharge voltage is reduced although it has a simple structure. <P>SOLUTION: In the plasma display panel 100 which is provided with a first substrate wherein a plurality of display electrodes 6 are formed and the display electrodes 6 are covered by a dielectric layer 7, and which is provided with a second substrate that is oppositely arranged so that a discharge space will be formed between the first substrate and that has a data electrode 10 formed in a direction perpendicular to the display electrodes 6, wherein a phosphor layer 13 is formed between barrier ribs 12 to section the discharge space, and in which a discharge gas is sealed into a discharge space and the phosphor layer 13 is excited by discharge of the discharge gas to emit light, visible light by excitation light emission of the phosphor layer 13 is taken out from a surface side of the second substrate, and ferroelectric 18 of fine particles or powder state is contained in the dielectric layer 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a gas discharge display device, in particular, red UV by rare gas discharge, green, to a plasma display panel which blue colors phosphors were excited to emit light is known as a display device for displaying video and images.

  Recently, there has been a growing expectation for thin television receiver or a public display on a large screen as a two-way information terminal, a liquid crystal display panel (LCD), field emission displays (FED), electroluminescence (EL) number, such as a display display devices have been proposed. PDP Among these display devices (hereinafter abbreviated as PDP) is a self-luminous in can beautiful image display, because of an equal is easily large screen, as an excellent thin display device in visibility It has attracted attention, and development for high-definition and large screen has been developed.

  The PDP, when roughly classified, there are AC type and a DC type from the drive system, in the discharge type there are two types of surface discharge type and an opposed discharge type, high definition, efforts to screen size comparison the simplicity of it and produced easily proceed, in the present circumstances, a surface discharge type PDP has come to occupy the mainstream AC type.

  Here, the PDP of a surface discharge type in the AC type is briefly described with reference to FIG. 3 (a) is an exploded perspective view showing a schematic configuration of a surface discharge type PDP in the conventional AC-type, FIG. 3 (b) schematic configuration of an image display portion of the PDP of a surface discharge type in a conventional AC type is a plan view showing a.

  In FIG. 3 (a), PDP 100 is composed of the front plate 1 and rear plate 2. Front plate 1, on the substrate 3 of the transparent front side of the glass substrate made of borosilicate sodium hydrogen-based glass by a float process, a stripe-shaped forming a pair with the sustain electrodes 5 and the scanning electrodes 4 as a constituent of PDP100 a display electrode 6. Further, also have a black stripe (not shown) for the purpose of improving the contrast. Having a dielectric layer 7 covering display electrode 6 group, further the protective film 8 made of MgO on the dielectric layer 7. The scanning electrodes 4 and sustain electrodes 5, a transparent electrode 4a, respectively, 5a and the transparent electrode 4a, which are electrically connected to Cr / Cu / Cr or made of Ag or the like bus electrodes 4b to 5a, consists 5b there.

  Further, the rear plate 2, on the rear side of the substrate 9 disposed opposite to the substrate 3, as a constituent of PDP 100, (also referred to as address electrodes) data electrodes formed in a direction orthogonal to display electrodes 6 and 10, the a base dielectric layer 11 as an underlying layer that covers the data electrodes 10, and the base dielectric layer partition wall 12 on the example striped 11, color displayed on the surface of the sides and base dielectric layer 11 between the respective partition walls 12 normally, red, green, and a phosphor layer 13 that three colors are sequentially repeatedly arranged in blue for.

  A back plate 2 and front plate 1 of the above configuration, the display electrode 6 and data electrode 10 are perpendicular to opposed sides of the partition wall 12 so as to form a small discharge space therein, sealing the periphery after assembling the PDP panel sealed with members, the gas in the panel is to be evacuated. Then, the sealing and the discharge space evacuated panels eg Ne (neon), a Xe (xenon) was prepared by mixing a rare gas discharge gas such, for example, by encapsulating a pressure of about 66500 Pa (500 Torr) and to complete the PDP100.

  Data electrodes 10 PDP100 formed by the above-described configuration, discharge is generated by a periodic voltage applied to the display electrode 6, and irradiated with ultraviolet rays to emit light by the discharge in the phosphor layer 13, exciting the phosphor by converted into visible light by, an image is displayed. Incidentally, for configuration of the inner in FIG. 3 is straightforward, but the front plate 1 and rear plate 2 are drawn away between the two substrates, in fact, the partition wall 12 and the front plate 1 and rear plate 2 while sandwiching the partition wall 12 of the back plate 2 are disposed facing in contact with the front plate 1.

  On the other hand, how in FIG. 3 (b), and sustain electrode 5 scan electrodes 4, which are arranged alternately in the column direction so as to be adjacent each other across the discharge gap 14 at the position indicated by A in each line of a matrix display the shows. Here, the discharge space of the PDP is partitioned by partition wall 12, the portion where the display electrode 6 and data electrode 10 (not shown) perpendicular to function as discharge cell 15 is a unit light emitting area. Further, in the non-light-emitting region 16 may form a black stripe (not shown) for the purpose of improving the contrast. Additionally, although not visible in FIG. 3 (b), the dielectric, the protective film made of MgO, and has a phosphor (PDP structure, the configuration, for example, see Non-Patent Document 1).

  Then, to achieve the greater efficiency and quality of PDP, including how such widening even higher Xe reduction and discharge gap for increasing the Xe gas pressure is an ultraviolet source that generates the discharge, various methods have been studied such. However, such as easy both methods variation in the discharge itself is caused by the high efficiency, such as PDP operating lifetime is reduced, problems sputtering proceeds PDP behavior has said something about instability of the protective film than the conventional trend can be seen to be even more pronounced. Furthermore, since the method of these high efficiency is accompanied by elevated discharge voltage, various methods of controlling the dielectric for the purpose of lowering the discharge voltage has been proposed.

  As a method of controlling the dielectric to lower the discharge voltage, but the simplest is the method of reducing the thickness of the dielectric, there are various methods in the other. First, at least one method on the electrode providing the high dielectric constant layer of the discharge cells constituting the PDP has been proposed (e.g., see Patent Document 1). In this way, by on PDP electrode providing the high dielectric constant layer, the discharge starting voltage is lowered to, to suppress crosstalk due to erroneous discharge of the adjacent discharge cells by concentrating the electric field in the discharge cell it is an object.

  Further, the AC-PDP having the same structure as FIG. 3, as an example of a rear-side substrate of the AC-PDP in the enlarged cross sectional view of Figure 4, covering the data electrodes 427 formed on the rear side of the substrate 429 dielectric layer, and a low dielectric constant dielectric layer 433a is formed in parallel so as to fill the space between the data electrodes 427 adjacent to the stripe, is formed on the data electrode 427 and the low k dielectric layer 433a structure and a high-k dielectric layer 433b has been proposed (e.g., see Patent Document 2). With such a configuration of the PDP, it is set to be achieved to reduce the data without power causing a decrease in quality problems or display quality such as flickering or unlit discharge cells.

There is also a proposal of using a ferroelectric transparent ceramic material for the dielectric layer of the AC-PDP (see, for example, Patent Document 3). In this proposal, a ferroelectric transparent ceramic material is included in the dielectric layer of the AC-PDP, and further, a ferroelectric transparent ceramic powder is mixed into the phosphor layer, or a ferroelectric transparent ceramic thin film is formed. In this way, the dielectric constant of the AC-PDP dielectric is maximized to increase the capacitance, thereby preventing jitter and erroneous discharge, and a part of visible light emitted from the phosphor. Is reflected to improve brightness and efficiency.
Heki Uchiike and Shigeo Miko, “All about Plasma Displays”, Industrial Research Council, Inc., May 1, 1997, p79-p80 JP-A-11-191376 JP-A-2005-19011 Japanese Patent Laid-Open No. 2005-26205

  However, out of the way of controlling the dielectric to reduce the discharge voltage, a method of reducing the thickness of the dielectric breakdown of the dielectric tends to occur, and lowers the reliability of the PDP of operation, quality There's a problem. Further, when manufacturing a conventional display electrodes on the front plate as is because it is necessary dielectric transmits light, there was only a transparent dielectric glass usable limit. Firing temperature in PDP manufacturing is determined by the strain point of the glass substrate, the the temperature is about 600 degrees, as the dielectric glass material as a sintered transparent at 600 degrees or less, lead glass, bismuth glass, there has been a problem that is limited to a zinc-based glass. The dielectric constant of these glasses is generally less than 15, it is difficult to increase the dielectric constant of the dielectric more.

  Next, a method of providing at least one of the high dielectric constant layer on the electrode of the discharge cell, a low-k dielectric layer to fill between data electrodes adjacent the back side substrate of PDP provided constituting the PDP, a method of forming a high-k dielectric layer over the data electrode and the low-k dielectric layer is to add a new arrangement in the conventional normal AC-PDP, prepared by adding a manufacturing process in addition to increasing the number of steps must be solved reliability and quality issues suitability of different dielectric constant layer material and the electrode material.

  Furthermore, in order to reduce the discharge voltage, the method using ferroelectric transparent ceramics material in the dielectric layer of the AC-PDP, in AC-PDP shown in FIG. 3, it is formed on the front-side substrate or the back side substrate as a dielectric layer, or printing form ferroelectric transparent ceramics material of the following powder particle size 2μm a paste material obtained by mixing a ferroelectric transparent ceramics material ordinary dielectric layer by a sputtering method or electron beam method trying to directly laminate formed by vapor deposition. Among these, when printing a dielectric layer of ferroelectric transparent ceramics material of the following powder particle size 2μm a paste material obtained by mixing, the particle size greater than the wavelength range 0.4μm~0.8μm of visible light powder with, formed dielectric layer because hardly transmits visible light by scattering, the problem of decreased luminance occurs at the front-side substrate. That is, in the case of forming the front-side substrate to the dielectric layer must have high transmittance of the dielectric layer, particularly since the dielectric constant and refractive index are correlated, high permittivity material the refractive index tend to be higher, lead glass used to form the conventional dielectric layer, bismuth glass, a material having high refractive index dielectric constant than zinc glass increases. These particles than when mixed in the dielectric layer light transmitting through the dielectric layer is scattered or reflected by the high dielectric constant particles transmittance is greatly reduced. In addition, if the method of directly laminated by vapor deposition, leads to an increase in manufacturing cost, man-hours it requires an expensive deposited film formation equipment.

  The present invention has been made to solve the above problems, it aims to the conventional AC-PDP with a simple structure similar to realize a highly efficient PDP with reduced discharge voltage to.

  The plasma display panel of the present invention, a covered first substrate with a dielectric layer display electrodes to form a plurality of display electrodes, the discharge space between the first substrate formed in order to achieve the above object and the oppositely disposed so as, and a second substrate to form a phosphor layer between the barrier ribs for partitioning the discharge space and having a data electrode formed in a direction perpendicular to the display electrodes, discharge in the discharge space gas was filled, in the plasma display panel to excite the phosphor to emit light layer by discharge of the discharge gas, a visible light by excitation light emitted from the phosphor layer is taken out from the surface side of the second substrate, fine particles or in the dielectric layer It has a configuration comprising a powdered ferroelectric.

  The plasma display panel of the present invention is a particulate or powdery ferroelectric crystalline or amorphous, and contains ferroelectric at least a portion of the over the dielectric layer or the dielectric layer in addition to the structure it is, constituting particles of the ferroelectric has a portion projecting on the dielectric layer, constituting the dielectric constant of the dielectric material used for the dielectric layer is 8 or less, strength configuration the dielectric constant of the dielectric is 15 to 4,000, and construction particle diameter of the fine particles or powder of the ferroelectric is in the range of 0.1μm to 50 [mu] m, also, adjacent formed on the first substrate configuration and in which the distance between the display electrodes than 100 [mu] m, using a gas containing at least Xe in the discharge gas sealed in the discharge space, have the configuration partial pressure of Xe is in the range of 10% to 100% There.

  These arrangements are configured to be interspersed particulate or powdered ferroelectric dielectric layer formed on the different from the back plate side has a structure to see the display light emission by discharge, further back side of the substrate from the conventional PDP can become, by reducing the discharge voltage, it is possible to realize a bright and high-efficiency PDP, since a simple structure, it is possible to suppress an increase in PDP manufacturing cost.

  According to the present invention, as well as the structure shown See emission by discharging from different backplate side of a conventional PDP, since a configuration in which intersperses particulate or powdered ferroelectric dielectric layer provided on the rear plate can be reduced discharge voltage despite a simple structure can achieve high efficiency of the PDP.

  The PDP in the embodiment of the present invention will be described with reference to the drawings.

(Embodiment)
Hereinafter, a PDP according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a sectional view showing a schematic configuration of a PDP in an embodiment of the present invention, and FIG. 2 is a plan view showing a schematic configuration of an image display unit of the PDP in an embodiment of the present invention.

  In Figure 1, PDP 100 is configured by a front plate 101 back plate 102., however, AC-PDP may be different at significantly from those of a conventional ordinary structure shown in FIG. 3 shown in FIG. 1 . It is where the respective components of the back plate 102 and front plate 101 are interchanged. That is, the front plate 101, on a transparent substrate on the front side 3 of the glass substrate made of a second substrate to become float borosilicate containing sodium-based glass or the like by, as constituents of PDP 100, orthogonal to the display electrodes 6 a data electrode 10 formed in a direction, a base dielectric layer 11 as an underlying layer for covering the data electrodes 10, and the base dielectric layer partition wall 12 on the example striped 11, the side surface and the base between the respective partition walls 12 Usually for a color display on the surface of the dielectric layer 11 has red, green, and a phosphor layer 13 that three colors of blue are sequentially repeatedly arranged. Further, the back plate 102, on the back side of the substrate 9 serving as a first substrate disposed to face the substrate 3, as a constituent of PDP 100, the display striped paired with a scan electrode 4 and sustain electrode 5 an electrode 6 further includes a dielectric layer 7 covering display electrode 6 group. The scanning electrodes 4 and sustain electrode 5 is constituted by electrodes made of Cr / Cu / Cr or Ag and the like. In the PDP in the embodiment of the present invention shown in FIG. 1 are denoted by the same reference numerals to the same components as the conventional ordinary PDP shown in FIG.

  A back plate 102 and front plate 101 of the above configuration, with the display electrode 6 and data electrode 10 are perpendicular to opposed sides of the partition wall 12 so as to form a small discharge space therein, sealing the periphery after assembling the PDP panel sealed with members, the gas in the panel is to be evacuated. Then, PDP 100 by encapsulating the sealing and evacuated panels of the discharge space, for example, Ne (neon), Xe (xenon) pressure of about was prepared by mixing a rare gas discharge gas, for example, 66500 Pa (500 Torr), such as and to complete the. The data electrodes 10 of PDP100 formed in such a configuration, discharge is generated by a periodic voltage applied to the display electrode 6, and irradiated with ultraviolet rays to emit light by the discharge in the phosphor layer 13, a phosphor so excited by converted into visible light, where an image is displayed is not different from the conventional normal of the PDP. However, in the PDP in the embodiment of the present invention, are fetched display emission from the side of the front plate 101 corresponding to the rear plate 2 in a conventional PDP in the direction of arrow F shown in FIG.

  Further, as shown in FIG. 2, the sustain electrodes 5 and the scanning electrodes 4 are arranged alternately in the column direction so as to be adjacent each other across the discharge gap 14 in each line of a matrix display. The discharge space of the PDP is partitioned by partition wall 12, the portion where the display electrode 6 and data electrode 10 (not shown) perpendicular to function as discharge cell 15 is a unit light emitting area. Further, in the non-light-emitting region 16 may form a black stripe (not shown) for the purpose of improving the contrast. Additionally, although not visible in FIG. 2, the dielectric, the protective film made of MgO, even where having a phosphor is the same as the normal of the PDP. Incidentally, FIG. 1, display electrodes 6 formed of scan electrode 4 and sustain electrode 5 in FIG. 2, although that is constituted by electrodes made of Cr / Cu / Cr or Ag or the like, the transparent electrode as shown in FIG. 3 4a, 5a may be configured of a display electrode 6 having a.

The PDP in the embodiment of the present invention is further different from the normal PDP. That is, the dielectric layer 7 includes a ferroelectric 18 in the form of fine particles or powder. As a material for the ferroelectric 18, it is desirable to use a material having a high dielectric constant having a dielectric constant ε of 15 to 4000. For example, as a high dielectric constant material, BaTiO ₃ (ε = 3600), LiNbO ₃ (ε = 84), KIO ₃ (ε = 45), Bi ₄ Ti ₃ O ₁₂ (ε = 112), PbTiO ₃ (ε = 200), Sr ₂ Nb ₂ O ₇ (ε = 75), SrBi ₂ Ta ₂ O ₉ (ε = 180), Fe ₂ O ₃ (ε = 20), BaO (ε = 34), PbO (ε = 25) .9) can be used, but is not limited thereto. The dielectric layer 7 including the ferroelectric 18 includes an organic binder and glass frit (PbO—B ₂ O ₃ —SiO ₂ type, ZnO—B ₂ O ₃ —SiO ₂ type, PbO—B ₂ O ₃ —SiO _{2). (It} is necessary to include at least one kind as an essential component among _2- Al ₂ O ₃ system, PbO—ZnO—B ₂ O ₃ —SiO ₂ system, Bi ₂ O ₃ —B ₂ O ₃ —SiO ₂ system, etc.) And a paste prepared by mixing the particles or powder of the ferroelectric 18 having a dielectric constant ε of 15 or more and 4000 or less, applied to the substrate 3 by a printing method, a die coating method, or the like, and dried. -Formed and produced by firing.

  PDP with a dielectric layer 7 as described above is formed, since the dielectric constant ε contains particulate or powder 15 to 4,000 of the ferroelectric 18 in the dielectric layer 7, dielectric of the dielectric layer 7 it is possible to increase the rate epsilon, it is possible when reducing the thickness of the dielectric layer 7 and the in increased capacity of the dielectric layer 7 similar to lower the firing voltage of the PDP. Therefore, it is possible to offset the increase in discharge voltage due to widen the increase and the discharge gap of the discharge voltage due to an increase in the partial pressure of Xe in the discharge gas sealed in the discharge space of the PDP.

  Then, in the PDP in the embodiment of the present invention, since the periodic discharge in the display electrode on the back plate 102 side, the transmission of light is not necessary to take into account, and conventional dielectric in the dielectric layer 7 It can also be used materials having different materials and colors refractive index.

Further, in the PDP according to the embodiment of the present invention, it is preferable that the fine particles or powdered ferroelectric 18 is in a crystalline form, and the ferroelectric layer is entirely in the dielectric layer 7 or at least part of the dielectric layer 7. Desirably, the body 18 is formed. Of the materials having a high dielectric constant ε, barium titanate (BaTiO ₃ (ε = 3600)) is well known, but the melting point of this material is 1610 ° C., which is the strain point of the glass substrate of the PDP. The upper limit of the firing temperature in the vicinity of 600 ° C. is greatly exceeded, and this material cannot be melted by the firing treatment. For this reason, it is necessary to use a method such as sputtering in order to form a film of many high dielectric constant materials including this material, but the thin film formation process increases the manufacturing cost. Therefore, the PDP in the embodiment of the present invention forms a dielectric layer by mixing particles of a material having a high dielectric constant with a dielectric paste material that is sintered by firing at 600 ° C. Therefore, particles of the ferroelectric material 18 having a high dielectric constant, for example, barium titanate such as barium titanate, are present inside the glass component having a low dielectric constant as shown in FIG. Further, it is only necessary that a part of these particles exist in the dielectric film. For example, even a particle having a high dielectric constant has a part in the dielectric layer 7. In the above description, the ferroelectric material 18 is a crystalline fine particle or powder. However, the present invention is not limited to this, and an amorphous high dielectric constant material (ferroelectric material) represented by a glass material. ) Particles or powders.

  Also, fine particles of the ferroelectric 18 as shown in FIG. 1, the PDP has a portion projecting on the dielectric layer 7 in the embodiment of the present invention. This discharge is therefore considered to be generated from the large particles of the dielectric constant epsilon, to have a protruding portion, have shown that it is possible to disperse the discharge. From the viewpoint of the PDP of efficiency, the dielectric constant of generally dielectric layer 7 epsilon is low it is known to have high efficiency, just when the dielectric layer 7 itself to the material of all the high dielectric constant sometimes efficiency decreases. This The reason for there are various theories, if only a material having a high dielectric constant to form a dielectric layer 7, the efficiency and current density becomes high is presumed to decrease. In Therefore, PDP in the embodiment of the present invention, the dielectric constant epsilon is large particles are dispersed in the dielectric film, as described above, since the discharge occurs from the large particles of the dielectric constant epsilon, the dielectric portion projecting from the body can also suppress concentration of the discharge current if they are dispersed. Therefore, it is possible to achieve both an increase in drop and the current density of the discharge voltage.

  Further, in the PDP in the embodiment of the present invention, the dielectric constant of the dielectric material used for the dielectric layer 7 epsilon it is eight or less. The reason for this is to disperse the discharge as described above is important to both the discharge voltage drop and efficiency, by setting a low dielectric constant of the high dielectric portion other than the fine particles of the dielectric layer 7, This is because it becomes possible to shift the occurrence of discharge more particles of high dielectric constant. Therefore, it becomes possible to enlarge more effects described above.

  Further, in the PDP in the embodiment of the present invention, the particle diameter of the fine particles or powder of the ferroelectric 18 is in the range of 0.1μm to 50 [mu] m. This may or may be incorporated into the dielectric layer by the viscosity decrease of the paste during firing when the firing of a high dielectric constant of the ferroelectric material when the particle diameter of the fine particles is too small dielectric layer forming paste, also , the particle size of the fine particles of the ferroelectric material having a high dielectric constant is too large, it means that narrowing the discharge space, because it may adversely affect the discharge. Further, the average particle diameter of the particle diameter of the fine particles referred to here by the fine particles of the fabrication process, one of the particle diameter of more than or less or 50 [mu] m 0.1 [mu] m may be included in the stochastic.

  Further, in the PDP in the embodiment of the present invention, it can be a distance between electrodes of the display electrodes 6 adjacent the back plate 102 than 100 [mu] m. The As described above, the distance between the electrodes as long as the structure of a conventional PDP is if the length gap than 100μm from which was a 60Myuemu～80myuemu, stable sustain discharge is difficult leads to increase in discharge voltage but by combining features and 100μm or longer gap structure of the present invention which intersperses strong particles of a dielectric 18 with a high dielectric constant in the dielectric layer 7, discharge voltage offset higher discharge voltage of which increases or can be reduced, enabling a stable sustain discharge can efficiency of the PDP.

  Furthermore, PDP in the embodiment of the present invention, using a gas containing at least Xe in the discharge gas sealed in the discharge space, the partial pressure of Xe gas is to be in the range of 10% to 100%. In general, causes an increase in the discharge voltage increases the partial pressure of Xe, the strong particles of the dielectric 18 as described above or by mixing the dielectric layer 7, by or to adopt a long gap structure, high Xe it is possible to solve the increasing problems in discharge voltage due to partial pressure, Toka likely to occur variation in the efficiency and other discharge itself, Toka PDP operating lifetime is reduced, the sputtering proceeds PDP operation of the protective film it is possible to suppress the problem that has said something about become unstable.

  As described above, PDP of the present invention is slightly different arrangement of the material from the conventional PDP, but with the structure shown See emission by discharge from the back plate side, particulate or powdered ferroelectric dielectric layer 7 since the body 18 to the configuration be interspersed, despite the simple structure the discharge voltage is lowered to, and is intended to enable the realization of high efficiency of the PDP.

  PDP of the present invention reduces the discharge voltage with a simple structure is capable of high efficiency, a high luminance can be realized without increasing the price of the PDP with excellent display quality, a display image quality in high-quality it is useful to excellent use of the PDP display device.

Sectional view showing a schematic structure of a PDP in the embodiment of the present invention Plan view showing a schematic configuration of an image display section of the PDP in the embodiment of the present invention (A) a plan view showing a schematic configuration of an image display portion of the surface discharge type PDP in the conventional AC type exploded perspective showing a schematic construction of a surface discharge type PDP in Figure (b) conventional AC type Enlarged cross-sectional view showing an example of a rear-side substrate of the AC-PDP

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101 Front plate 2,102 Back plate 3 (Front side) substrate 4 Scan electrode 5 Sustain electrode 6 Display electrode 7 Dielectric layer 8 Protective film 9,429 (Back side) substrate 10,427 Data electrode 11 Base dielectric Body layer 12 Partition 13 Phosphor layer 14 Discharge gap 15 Discharge cell 16 Non-light emitting area 100 PDP (plasma display panel)
433a Low dielectric constant dielectric layer 433b High dielectric constant dielectric layer

Claims (8)

A plurality of display electrodes are formed and arranged opposite to each other so as to form a discharge space between a first substrate having the display electrodes covered with a dielectric layer and the first substrate, and the display electrodes A second substrate having a data electrode formed in an orthogonal direction and having a phosphor layer formed between partition walls partitioning the discharge space, wherein a discharge gas is sealed in the discharge space, and discharge of the discharge gas is performed. In the plasma display panel for exciting and emitting the phosphor layer by:
Visible light by excitation light emission of the phosphor layer is extracted from the surface side of the second substrate,
A plasma display panel, wherein the dielectric layer includes a ferroelectric in the form of fine particles or powder. Particulate or powder form the ferroelectric is crystalline or amorphous, and wherein said included throughout the dielectric layer or at least a portion of the dielectric layer the ferroelectric the plasma display panel of claim 1. The plasma display panel of claim 1 or claim 2, characterized in that fine particles of the ferroelectric has a portion projecting on the dielectric layer. The use in the dielectric layer dielectric material PDP as claimed in any one of claims 3 having a dielectric constant, characterized in that it is 8 or less. The plasma display panel as claimed in any one of claims 4 to the dielectric constant of the ferroelectric is characterized in that 15 to 4,000. The plasma display panel as claimed in any one of claims 5 to particle diameter of the fine particles or powder of the ferroelectric is characterized in that in the range of 0.1μm to 50 [mu] m. The plasma display panel as claimed in any one of claims 6, characterized in that the distance between the display electrodes adjacent formed on the first substrate than 100 [mu] m. Using a gas containing at least Xe in the discharge gas sealed in the discharge space, any one of claims 1 to 7 in which the partial pressure of the Xe is lies in the range from 10% to 100% plasma display panel according to.

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