JP4507760B2 - Plasma display panel - Google Patents

Description

  The present invention relates to a plasma display panel used for a wall-mounted television or a large monitor.

  A typical AC surface discharge plasma display panel (hereinafter referred to as PDP) as an AC type has a front plate made of a glass substrate formed by arraying scan electrodes and sustain electrodes for performing surface discharge, and data electrodes. The back plate made of a glass substrate is placed in parallel so as to form a discharge space in the gap so that both electrodes form a matrix, and the outer periphery is sealed with a sealing material such as glass frit It is comprised by doing. Discharge cells partitioned by barrier ribs are provided between the substrates, and a phosphor layer is formed in the cell space between the barrier ribs. In the PDP having such a configuration, color display is performed by generating ultraviolet rays by gas discharge and exciting the phosphors of R, G, and B colors with the ultraviolet rays to emit light (see Patent Document 1). .

  In this PDP, one field period is divided into a plurality of subfields, and is driven by a combination of subfields that emit light to perform gradation display. Each subfield includes an initialization period, an address period, and a sustain period. In order to display image data, different signal waveforms are applied to each electrode in the initialization period, the address period, and the sustain period.

  In the initialization period, for example, a positive pulse voltage is applied to all the scan electrodes, and necessary wall charges are accumulated on the protective layer and the phosphor layer on the dielectric layer covering the scan electrodes and the sustain electrodes.

  In the address period, scanning is performed by sequentially applying a negative scanning pulse to all the scanning electrodes, and when there is display data, if a positive data pulse is applied to the data electrode while scanning the scanning electrode, Discharge occurs between the scan electrode and the data electrode, and wall charges are formed on the surface of the protective layer on the scan electrode.

  In the subsequent sustain period, a voltage sufficient to maintain a discharge is applied between the scan electrode and the sustain electrode for a certain period. Thereby, discharge plasma is generated between the scan electrode and the sustain electrode, and the phosphor layer is excited to emit light for a certain period. In the discharge space where no data pulse is applied in the address period, no discharge occurs and excitation light emission of the phosphor layer does not occur.

In such a PDP, a large discharge delay occurs in the discharge during the address period, and the address operation becomes unstable, or the address time is set long to perform the address operation completely, and the time spent in the address period becomes too long. There was a problem. In order to solve these problems, there has been proposed a PDP in which an auxiliary discharge electrode is provided on the front plate and the discharge delay is reduced by priming discharge generated by in-plane auxiliary discharge on the front plate side, and a driving method thereof (see Patent Document 2). ).
JP 2001-195990 A JP 2002-297091 A

  However, in these PDPs, when the number of lines is increased due to higher definition, the time spent for the address time becomes longer, and the time spent for the maintenance period must be reduced, and it is difficult to ensure the luminance when the definition is increased. The problem arises. Furthermore, in order to achieve high brightness and high efficiency, even when the xenon (Xe) partial pressure is increased, the discharge start voltage rises and the initializing discharge becomes unstable, which may result in writing failure. Therefore, there is a problem that the drive voltage margin of the address operation is narrowed.

  The present invention has been made in view of these problems. Even when the definition is increased or the xenon (Xe) partial pressure is increased by stably generating the priming discharge, the initialization operation or the address operation is performed. An object of the present invention is to provide a PDP in which the above is stabilized.

In order to solve the above-described problems, a PDP according to the present invention has a scan electrode and a sustain electrode arranged on a front substrate so as to be parallel to each other, and a rear substrate disposed opposite to the front substrate with a discharge space interposed therebetween. A data electrode arranged in a direction intersecting the scan electrode and the sustain electrode, a priming electrode and a barrier rib formed on the back substrate, a main discharge space formed between the scan electrode, the sustain electrode and the data electrode, and scanning A priming discharge space formed between the electrode and the priming electrode, and the barrier ribs are provided so as to intersect with the vertical barrier ribs in a direction parallel to the data electrodes, to form a main discharge space. and is composed of a horizontal barrier ribs that form a gap portion between the main discharge space, the priming discharge space is constituted by a gap portion, the priming electrodes of the parallel and vertical barrier ribs and data electrodes Disposed, the width of priming electrode is not more than the width of the vertical barrier rib, the rear substrate side of the priming discharge space, at least one selected from among oxides and fluorides of oxides and alkaline earth metal of an alkali metal A material layer including a material and a glass material is provided.

  With this configuration, if a material layer in which at least one of an alkali metal oxide, an alkaline earth metal oxide, or a fluoride is mixed with a glass material is provided in the priming discharge space, the discharge voltage of the priming discharge is greatly reduced. In addition, it is possible to make the generation of the discharge uniform by adjusting the conditions under which the discharge easily occurs, and to realize a stable priming discharge by suppressing the dielectric breakdown between the priming electrode and the priming discharge space. Therefore, by increasing the operating margin of the priming discharge and reducing the discharge voltage, the priming discharge is stably formed while suppressing the influence on the surroundings such as crosstalk, thereby achieving high definition with excellent address characteristics. A suitable PDP can be realized.

  Further, at least one material selected from an alkali metal oxide, an alkaline earth metal oxide and a fluoride contained in the material layer is exposed on the surface of the material layer facing the priming discharge space. It is desirable that the generation of priming discharge can be further stabilized.

  Furthermore, it is desirable that the material layer contains a material mainly composed of MgO, and the material layer mainly composed of MgO can improve the electron emission performance and can effectively and reliably form a stable priming discharge. .

Furthermore, priming electrodes may be formed on the same surface as the data electrodes on the rear substrate, to facilitate the formation of priming electrodes onto the rear substrate, it is possible to generate a uniform priming discharge in the priming discharge space In addition, it is possible to realize stable priming discharge by suppressing dielectric breakdown due to the priming electrode.

  As described above, according to the present invention, the priming discharge is stably generated, so that the initialization operation or the address operation can be stabilized even when the definition is increased or the xenon (Xe) partial pressure is increased. A PDP that displays an image with good quality can be realized.

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

(First embodiment)
FIG. 1 is an exploded perspective view showing a PDP according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the PDP.

  As shown in FIG. 1, the PDP 10 has a glass front substrate 21 constituting the front plate 20 and a glass rear substrate 31 constituting the back plate 30 facing each other with a discharge space therebetween, and the discharge thereof. Neon (Ne), xenon (Xe), and the like are sealed in the space as gases that emit ultraviolet rays by discharge. On the front substrate 21, a strip-shaped electrode group, which is covered with the front plate dielectric layer 24 and the protective layer 25 and includes a pair of scanning electrode 22 and sustain electrode 23, is arranged in parallel to each other. ing. The scan electrode 22 and the sustain electrode 23 are formed so as to overlap the transparent electrodes 22a and 23a, and the transparent electrodes 22a and 23a, respectively, and a metal bus bar 22b made of silver (Ag) or the like for enhancing conductivity. 23b. Further, the scan electrodes 22 and the sustain electrodes 23 are alternately arranged two by two so that the scan electrodes 22, the scan electrodes 22, the sustain electrodes 23, the sustain electrodes 23, and so on. An auxiliary electrode 22b ′ is formed therebetween. Further, a light absorption layer 28 is provided between the two adjacent sustain electrodes 23 and between the scan electrodes 22 to increase the contrast during light emission. The auxiliary electrode 22b 'is connected to the scanning electrode 22 at a non-display portion (end portion) of the PDP.

  On the back substrate 31, a plurality of band-like data electrodes 32 are arranged in parallel to each other in a direction orthogonal to the scanning electrodes 22 and the sustain electrodes 23. A back plate dielectric layer 33 is provided so as to cover these data electrodes 32. On the rear substrate 31, a partition wall for partitioning a plurality of main discharge cells 40 that are the main discharge spaces and the priming discharge cells 41 a that are the priming discharge spaces formed by the scan electrodes 22, the sustain electrodes 23, and the data electrodes 32. 34 is formed. The partition wall 34 is provided so as to intersect with the vertical partition wall 34a and a vertical partition wall 34a extending in a direction orthogonal to the scanning electrode 22 and the sustain electrode 23 provided on the front substrate 21, that is, in a direction parallel to the data electrode 32. The discharge cells 40 are formed, and the horizontal barrier ribs 34b that form gaps 41 between the main discharge cells 40 are formed. The main discharge cell 40 is provided with a phosphor layer 35.

  The gap portion 41 of the back substrate 31 is continuously formed in a direction orthogonal to the data electrodes 32, and only the gap portion 41 corresponding to the portion where the scan electrodes 22 are adjacent to each other discharges between the front substrate 21 and the back substrate 31. A priming electrode 36 is formed in a direction perpendicular to the data electrode 32 to form a priming discharge cell 41a. The priming electrode 36 is formed on the back plate dielectric layer 33 that covers the data electrode 32. Therefore, priming discharge is performed between the auxiliary electrode 22b 'and the priming electrode 36 formed on the back substrate 31 side. The priming electrode 36 and the auxiliary electrode 22b 'are formed in parallel to each other.

As shown in FIGS. 1 and 2, in the priming discharge cell 41a on the back substrate 31, a material layer 50 covering the priming electrode 36 and mixed with a material having a large secondary electron emission coefficient and a glass material is provided. It is formed in a substantially uniform film thickness. As a material having a large secondary electron emission coefficient, an alkali metal oxide (for example, Cs ₂ O), an alkaline earth metal oxide (for example, MgO, CaO, SrO, BaO), or a fluoride ( for example, LiF, the use of a material containing at least one of CaF _2, MgF _2, etc.) is considered. Further, examples of the glass material include ZnO—B ₂ O ₃ —SiO ₂ based mixture, PbO—B ₂ O ₃ —SiO ₂ based mixture, PbO—ZnO—B ₂ O ₃ —SiO ₂ based mixture, Bi _2. An O ₃ —B ₂ O ₃ —SiO ₂ based mixture or the like is used.

  Next, a method for displaying image data on the PDP will be described with reference to FIG. FIG. 3 is a waveform diagram showing an example of a drive waveform for driving the PDP in the first embodiment of the present invention. As a method of driving the PDP, one field period is divided into a plurality of subfields having a light emission period weight based on the binary system, and gradation display is performed by a combination of subfields to emit light. Each subfield includes an initialization period, an address period, and a sustain period.

First, in the initialization period, in the priming discharge space (priming discharge cell 41a in FIG. 1) in which the priming electrode Pr (priming electrode 36 in FIG. 1) is formed, a positive pulse voltage is applied to all the scanning electrodes Y (in FIG. 1). Applying to the scanning electrode 22), initialization is performed between the auxiliary electrode (auxiliary electrode 22b ′ in FIG. 1) and the priming electrode Pr. In the next address period, a positive potential is always applied to the priming electrode Pr. Therefore, in the priming discharge cell 41a, when the scanning pulse SP _n is applied to the scanning electrodes Y _n, priming discharge occurs between the priming electrode Pr and the auxiliary electrode.

Next, the scan pulse SP _{n + 1} is applied to the scan electrode Y _{n + 1} of the (n + 1) th discharge cell. At this time, since the priming discharge has occurred immediately before, the discharge delay at the address of the (n + 1) th discharge cell is small. Become. Here, only the driving sequence of one field has been described, but the operation principle in the other subfields is the same. In the drive waveform shown in FIG. 3, the above-described operation can be more reliably caused by applying a positive voltage to the priming electrode Pr during the address period. It is desirable that the applied voltage Vpr of the priming electrode Pr in the address period is set to a value larger than the data voltage value Vd applied to the data electrode D (data electrode 32 in FIG. 1).

  Thus, in the present embodiment, the priming discharge is generated in the vertical direction between the auxiliary electrode 22 b ′ provided on the front substrate 21 and the priming electrode 36 provided on the back substrate 31. In addition, a material layer 50 in which a material having a large secondary electron emission coefficient and a glass material are mixed is formed in the priming discharge cell 41a of the back substrate 31. Therefore, the electrons emitted from the auxiliary electrode 22b ′ hit the material layer 50 on the back substrate 31 side. However, since the material layer 50 is a material having a large secondary electron emission coefficient, secondary electrons are emitted from the material layer 50 to perform priming. Secondary electrons can be supplied into the discharge cell 41a to make the generation of priming discharge uniform and promote the discharge.

  Therefore, by reducing the discharge voltage while ensuring the same operation margin as in the prior art, it is possible to reduce the intensity of the discharge and suppress the influence of priming discharge such as crosstalk on others. In addition, when the discharge voltage is the same as that of the prior art, the discharge operation margin can be made larger than that of the prior art. Of course, the effect of suppressing the crosstalk and the effect of increasing the operating margin can be used together by adjusting the applied voltage. As a result, even in a high-definition PDP, the address characteristics can be further stabilized.

  On the other hand, when stabilizing the address operation characteristics using such priming discharge, it is important to stably form the priming discharge itself. For example, when the withstand voltage of the material layer 50 that insulates the priming electrode 36 from the discharge space of the priming discharge cell 41a is insufficient or causes dielectric breakdown, the image display is seriously affected. That is, when dielectric breakdown or the like occurs in the material layer 50 on the priming electrode 36, abnormally strong priming discharge is generated in the dielectric breakdown portion, which becomes abnormal discharge in the priming discharge cell 41a and induces erroneous discharge in the main discharge cell 40. To do. Since this erroneous discharge covers a range of a plurality of cells, it is observed as a huge bright spot on the display screen, and the display quality of the PDP is remarkably deteriorated.

  In the first embodiment of the present invention, as a material having a large secondary electron emission coefficient, it has been used as a material for an AC type PDP. When neon (Ne) and xenon (Xe) gas is sealed, secondary electrons are used. A material layer 50 composed of magnesium oxide (MgO) having a large emission coefficient and excellent durability and the glass material described above is formed. Further, these materials having a large secondary electron emission coefficient are formed so as to be exposed on the surface of the material layer 50. Therefore, the material layer 50 has a function of effectively emitting secondary electrons from the material layer 50 into the priming discharge cell 41a when a voltage is applied between the priming electrode 36 and the auxiliary electrode 22b ′. Yes. As a result, in the present embodiment, secondary electrons can be uniformly supplied into the priming discharge cell 41a from the material layer 50 formed continuously in the longitudinal direction of the priming discharge cell 41a. Therefore, variation in priming discharge in the priming discharge cell 41 a having an elongated shape can be suppressed, and uniform priming discharge can be generated for each main discharge cell 40. Moreover, generation | occurrence | production of priming discharge can be accelerated | stimulated and the voltage which should be applied to priming discharge can be reduced.

  In the first embodiment of the present invention, the material layer 50 also includes a glass material. Therefore, since insulation between the priming electrode 36 and the priming discharge cell 41a space can be secured and dielectric breakdown of the material layer 50 can be suppressed, abnormally strong priming discharge or the like can be prevented, and a giant generated on the display screen can be prevented. Therefore, it is possible to prevent a bright spot and realize an image display with high display quality.

  FIG. 4 is a cross-sectional view showing details of the material layer 50. 4A, as the material layer 50, the glass material 51 and an oxide 52 such as MgO having a large secondary electron emission coefficient are uniformly mixed, and the priming electrode 36 having a predetermined film thickness is formed. An example in which the cover is formed is shown. In this case, MgO is exposed on the surface of the material layer 50 on the priming discharge space side.

  FIG. 4B shows another example of the configuration of the material layer 50. A glass material layer 53 is formed to a predetermined thickness on the priming electrode 36, and MgO or the like is further formed thereon. An example of a two-layer structure in which an oxide layer 54 is formed is shown.

  Further, in FIG. 4 (c), the glass material layer 53 shown in FIG. 4 (b) has a multi-layer structure, and a so-called defoaming type in which bubbles are present in the film after applying a so-called glass material and baking and solidifying. This is an example of a defoaming type two-layer or multi-layer structure without bubbles. In this case, the oxide layer 57 is formed on the defoaming glass material layer 55 and the non-defoaming glass material layer 56, and the insulating performance can be improved by the defoaming glass material layer 55.

  Further, these material layers 50 can be formed by filling a priming discharge cell 41a from a nozzle with a paste material containing glass material particles, oxide particles, and the like, and baking at a predetermined temperature.

  As described above, according to the first embodiment of the present invention, it is possible to realize a PDP suitable for high definition that has excellent address characteristics and high image quality display by stably forming priming discharge. Can do.

(Second Embodiment)
FIG. 5 is an exploded perspective view showing a PDP according to a second embodiment of the present invention, and FIG. 6 is a cross-sectional view of the PDP. The second embodiment of the present invention differs from the first embodiment in the configuration of the back plate 30 and the configuration of the front plate 20 is the same, so the configuration of the back plate 30 will be described.

  As shown in FIG. 5, a plurality of data electrodes 32 and a plurality of priming electrodes 70 are formed alternately and parallel to each other on the back substrate 31 of the back plate 30 in a direction intersecting the scan electrodes 22 and the sustain electrodes 23. . A back plate dielectric layer 33 is formed so as to cover the data electrode 32 and the priming electrode 70.

  Barrier ribs 34 are formed on the back plate dielectric layer 33, and the barrier ribs 34 divide a discharge space to form a plurality of main discharge cells 40 having scan electrodes 22, sustain electrodes 23, and data electrodes 32. . As shown in FIG. 5, the barrier ribs 34 are arranged above the priming electrodes 70 and extend in a direction parallel to the priming electrodes 70, and extend in a direction parallel to the scanning electrodes 22 and the sustaining electrodes 23. It is comprised by the horizontal partition 34b which forms the clearance gap part 41 between the cells 40. FIG. Therefore, the main discharge cells 40 are formed in a lattice shape by the horizontal barrier ribs 34b and the vertical barrier ribs 34a provided so as to intersect the horizontal barrier ribs 34b.

  The gap 41 is defined by the horizontal barrier rib 34 b and is formed adjacent to the main discharge cell 40. In addition, since two scanning electrodes 22 and two sustaining electrodes 23 are alternately formed on the front substrate 21 as a pair, the scanning electrode 22 is located on the adjacent side as the gap 41. Side gap portion 41a and sustain electrode side gap portion 41b located on the side where two sustain electrodes 23 are adjacent to each other are formed. These are arranged alternately with the main discharge cells 40 in between.

  Further, although no discharge is generated in the sustain electrode side gap 41b, in the scan electrode side gap 41a, a priming discharge is generated between the auxiliary electrode 22b 'and the priming electrode 70 facing each other across the discharge space. That is, the scan electrode side gap 41a functions as a priming discharge cell (hereinafter referred to as a priming discharge cell 41a).

  Further, the top of the partition wall 34 is formed flat so as to contact the front substrate 21. This is to prevent mutual interference between the adjacent main discharge cell 40 and the priming discharge cell 41a. In particular, the adjacent main discharge cell 40 is erroneously written under the influence of the priming discharge generated in the address period. This is to prevent malfunctions. Furthermore, this is to prevent malfunction such as a write failure due to a decrease in wall charges of the main discharge cell 40 adjacent to the priming discharge cell 41a accompanying the priming discharge.

  Further, as shown in FIG. 5, in the main discharge cell 40, a phosphor layer 35 is formed on the side surface of each partition wall 34 and the back plate dielectric layer 33. Corresponding to the respective data electrodes 32 provided on the back plate 30, the phosphor layers 35 are alternately provided with phosphor layers 35 that emit red, blue and green light by ultraviolet rays, and are provided on the same data electrode 32. The main discharge cell 40 is formed with a phosphor layer 35 of the same color. In FIG. 5, the phosphor layer 35 is not formed on the priming discharge cell 41a side, but this is because a priming discharge is easily generated by not providing a phosphor layer that functions to inhibit discharge. . In the above description, the back plate dielectric layer 33 is formed so as to cover the data electrode 32 and the priming electrode 70, but the back plate dielectric layer 33 may not be formed.

  Here, the arrangement positions of the partition walls 34, the data electrodes 32, and the priming electrodes 70 will be described with reference to the drawings. FIG. 7 is a plan perspective view of the main part of the back plate 30 of the PDP 10 according to the second embodiment of the present invention.

  As shown in FIG. 7, in the second embodiment of the present invention, the data electrodes 32 and the priming electrodes 70 are arranged alternately and parallel to each other on the same plane. Further, the priming electrode 70 is disposed along the vertical partition wall 34a so as to pass under the vertical partition wall 34a. The electrode width of the priming electrode 70 is formed to be equal to or less than the width of the vertical partition wall 34a. Accordingly, since the priming electrode 70 is disposed under the vertical barrier rib 34a so as to be hidden behind the vertical barrier rib 34a, it does not face the discharge space except for the priming discharge cell 41a where the vertical barrier rib 34a is not formed. That is, the priming electrode 70 is opposed to the auxiliary electrode 22b 'with the discharge space only in the priming discharge cell 41a, and is hidden under the vertical barrier ribs 34a in other regions. Therefore, the possibility that unnecessary discharge is generated between the priming electrode 70 and the scan electrode 22 or the sustain electrode 23 in a region other than the priming discharge cell 41a is very low, and only the priming electrode 70 and the auxiliary electrode are provided in the priming discharge cell 41a. A priming discharge can be stably generated between the electrode 22b ′.

Further, as shown in FIG. 6, the priming discharge cell 41a on the back substrate 31 has a material layer in which a material having a large secondary electron emission coefficient and a glass material are mixed, as in the first embodiment. 50 is formed in a substantially uniform film thickness. As a material having a large secondary electron emission coefficient, an alkali metal oxide (for example, Cs ₂ O), an alkaline earth metal oxide (for example, MgO, CaO, SrO, BaO), or a fluoride ( for example, LiF, the use of a material containing at least one of CaF _2, MgF _2, etc.) is considered. Further, examples of the glass material include ZnO—B ₂ O ₃ —SiO ₂ based mixture, PbO—B ₂ O ₃ —SiO ₂ based mixture, PbO—ZnO—B ₂ O ₃ —SiO ₂ based mixture, Bi _2. An O ₃ —B ₂ O ₃ —SiO ₂ based mixture or the like is used. Further, the configuration and formation method of the material layer 50 are the same as those in the first embodiment.

  As described above, in the second embodiment, only the arrangement position of the priming electrode 70 is different from that in the first embodiment, and the driving method thereof is the same. Therefore, the material layer 50 has a function of effectively emitting secondary electrons from the material layer 50 into the priming discharge cell 41a when a voltage is applied between the priming electrode 70 and the auxiliary electrode 22b ′. Yes. As a result, in the present embodiment, secondary electrons can be uniformly supplied into the priming discharge cell 41a from the material layer 50 formed continuously in the longitudinal direction of the priming discharge cell 41a. Therefore, variation in priming discharge in the priming discharge cell 41 a having an elongated shape can be suppressed, and uniform priming discharge can be generated for each main discharge cell 40. Moreover, generation | occurrence | production of priming discharge can be accelerated | stimulated and the voltage which should be applied to priming discharge can be reduced.

  In the present invention, the material layer 50 also includes a glass material. Therefore, the insulation between the priming electrode 70 and the priming discharge cell 41a can be ensured, and the dielectric breakdown of the material layer 50 can be suppressed. Therefore, an abnormally strong priming discharge is prevented, and a giant generated on the display screen. Therefore, it is possible to prevent a bright spot and realize an image display with high display quality.

  Furthermore, in the second embodiment of the present invention, since the priming electrodes 70 parallel to the address electrodes 32 are arranged on the same plane of the back substrate 31, it is easy to form the priming electrodes 70 on the back substrate 31. Can be.

  As described above, according to the present invention, by stably generating priming discharge, it is possible to stabilize the initialization operation or the address operation even when the definition is increased or the xenon (Xe) partial pressure is increased. Since the image can be displayed with a high quality, it is useful for a plasma display device used for a wall-mounted television or a large monitor.

The disassembled perspective view which shows PDP in the 1st Embodiment of this invention Cross-sectional view of the PDP Waveform diagram showing an example of a drive waveform for driving the PDP (A) Cross-sectional view in which glass material and oxide are mixed as material layer of PDP (b) Cross-sectional view showing a two-layer structure of glass material layer and oxide layer as material layer of PDP (c) Sectional drawing in which glass material layer has multilayer structure as material layer of PDP The disassembled perspective view which shows PDP in the 2nd Embodiment of this invention. Cross-sectional view of the PDP Plane perspective view of the main part of the back substrate of the PDP

10 PDP
DESCRIPTION OF SYMBOLS 20 Front plate 21 Front substrate 22 Scan electrode 22a, 23a Transparent electrode 22b, 23b Metal bus 22b 'Auxiliary electrode 23 Sustain electrode 24 Front plate dielectric layer 25 Protection layer 28 Light absorption layer 30 Back plate 31 Back substrate 32 Data electrode 33 Back faceplate dielectric layer 34 barrier rib 34a longitudinal barrier rib 34b lateral barrier rib 35 phosphor layer 36,7 0 priming electrodes 40 main discharge cell 41 clearance unit 41a scanning electrode side clearance (priming discharge cell)
41b Sustain electrode side gap 50 Material layer 51 Glass material 52 Oxide 53 Glass material layer 54, 57 Oxide layer 55 Defoamed glass material layer 56 Non-defoamed glass material layer

Claims (4)

A scan electrode and a sustain electrode arranged on the front substrate so as to be parallel to each other, and a back substrate placed opposite to the front substrate with a discharge space in between, arranged in a direction intersecting the scan electrode and the sustain electrode A data electrode; a priming electrode and a partition formed on the back substrate; a main discharge space formed between the scan electrode, the sustain electrode and the data electrode; and the scan electrode and the priming electrode. A priming discharge space formed therebetween, the barrier ribs extending in a direction parallel to the data electrodes, and intersecting the vertical barrier ribs to form the main discharge space, and It is composed of a horizontal barrier ribs that form a gap portion between the main discharge space, wherein the priming discharge space is constituted by the gap portion, the priming electrode the data Is positioned below the pole To parallel and the longitudinal partition wall, the priming width of the electrode is not less less than the width of the vertical barrier rib, the rear substrate side of the priming discharge space, oxides and alkaline earth metal of an alkali metal A plasma display panel comprising a material layer containing at least one material selected from oxides and fluorides of the above and a glass material. At least one material selected from alkali metal oxides, alkaline earth metal oxides and fluorides contained in the material layer is exposed on the surface of the material layer facing the priming discharge space. The plasma display panel according to claim 1. 3. The plasma display panel according to claim 1, wherein the material layer includes a material mainly composed of MgO. Priming electrode The plasma display panel according to claim 1, characterized in that formed on the same surface as the data electrodes on the rear substrate.

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