KR20020019355A - Plasma display panel - Google Patents

Abstract

PURPOSE: A plasma display panel is provided to prevent an unnecessary cross-talk between adjacent separate discharge cells by performing a discharge process in corresponding discharge cells regardless of the other discharge cells through electrode lines which are buried at part of the barrier ribs. CONSTITUTION: A front substrate unit(10) includes a front base plate(11), X-Y sustain electrodes(12,18) in shape of stripe and a front dielectric layer(15) deposited to the front base plate to cover the X-Y sustain electrodes. A rear substrate unit(30) includes a rear base plate(31), address electrodes(32) in shape of stripe, and a rear dielectric layer(33) deposited to the rear base plate to cover the address electrodes. Barrier ribs are arranged in the rear dielectric layer with lengthwise and crosswise and divide interface space between the front and rear base plates into Waffle shape. The barrier ribs define separately a plurality of discharge cells(38) corresponding to the X-Y sustain electrodes. Phosphors(37) are deposited at the inside of each discharge cells successively and emit color light due to the crash with the ultraviolet rays. Barrier rib electrodes(101,102,103,104) are buried in shape of stripe extended at full length according to the rear base plate in a state that is in parallel with the X-Y sustain electrodes at part of the barrier ribs.

Description

Plasma display panel {Plasma display panel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (hereinafter referred to as " PDP "), and more particularly, to embed a pair of electrode lines inside partition walls defining discharge cells of a certain size. The present invention relates to a PDP that can greatly improve image quality of a final product by maximizing discharge efficiency within individual discharge cells using electrode lines.

Recently, various problems regarding the function of the CRT (Cathod Ray Tube) have been raised, and various kinds of display apparatuses that can overcome the disadvantages of the CRT have been developed.

Among such various display devices, in particular, interest in PDP is increasing because PDP has an excellent advantage of displaying a large screen more clearly than conventional CRT.

PDP according to the prior art is, for example, US Patent No. 6078139 "Front panel for plasma display", US Patent No. 6075319 "Plasma display panel device and a method of manufacturing the same (Plasma display panel device) and method for fabricating the same ", US Patent No. 6069446" Plasma display panel with ring-shaped loop electrodes, US Patent No. 6066917 "Plasma display panel display panel, US Pat. No. 6034656, "Plasma display panel and method of controlling brightness of the same."

Typically, such a conventional PDP is composed of a combination of front and rear base plates that are integrally sealed and coupled to each other while facing each other. In this case, a plurality of X and Y sustain electrodes are stripped on one surface of the front base plate. ) Are arranged to form a separate tip, and similarly, a plurality of address electrodes are arranged to form a separate tip of a stripe shape on one surface of the rear base plate.

In this case, a plurality of partitions are arranged vertically and horizontally in a state in which a plurality of partitions are in a waffle shape, and the partitions divide the interface space between the front and rear base plates into a plurality of zones. A plurality of discharge cells are defined in the interface space between the rear base plates. In this case, the respective discharge cells are adjacent to each other, forming a densely arranged structure.

A certain amount of discharge gas is sealed in these individual discharge cells. In this state, when a predetermined magnitude of voltage is applied to the aforementioned X and Y sustain electrodes and address electrodes, the discharge gas is rapidly generated by this voltage. By being discharged, the phosphors applied inside the discharge cells can induce light of, for example, R, G, and B colors to be emitted to the outside.

Thus, since the conventional discharge cells provide a substantial discharge space of the discharge gas in a state in which a certain amount of discharge gas is sealed, the final finished PDP is dependent on the image quality of the discharge cell according to the arrangement of the discharge cells. Inevitably, many efforts have been made to improve the arrangement of the discharge cells in the conventional production line.

However, since the conventional individual discharge cells have a structure defined by the waffle-shaped partitions and closely arranged as mentioned above, unless the structure of the partitions is greatly improved, the individual discharge cells are adjacent to each other adjacent to each other. There is no choice but to place unnecessary interference with the discharge cells.

In this case, the so-called cross-talk phenomenon is caused between the individual discharge cells, so that the discharge gas contained inside each discharge cell is obliged to be interrupted in a series of discharge processes, resulting in a constant final PDP. It acts as a cause that can only maintain the image quality below the level.

Accordingly, an object of the present invention is to embed a series of electrode lines in some of the partitions defining the individual discharge cells, through which the discharge process of the discharge gas proceeding in the individual discharge cells is different from the other discharge cells. Irrespective of the present invention, it is possible to intensively proceed within the respective discharge cells, thereby preventing unnecessary cross-talk phenomena caused between the adjacent discharge cells.

Another object of the present invention is to suppress the unnecessary cross-talk phenomena caused between individual discharge cells in advance, leading to an improvement in the discharge efficiency of the discharge gas contained in the individual discharge cells, thereby, the image quality of the final finished PDP To optimize.

Still other objects of the present invention will become more apparent from the following detailed description and the accompanying drawings.

1 is an exemplary view showing a plasma display panel according to the present invention.

2 is a longitudinal cross-sectional view of FIG.

3 is an exemplary view conceptually showing the arrangement of the partition electrode according to another embodiment of the present invention.

4 is an exemplary view conceptually showing the arrangement of the partition electrode according to another embodiment of the present invention.

In order to achieve the above object, the present invention discloses a PDP composed of front and rear substrate units integrally sealed while facing each other with individual discharge cells filled with discharge gas therebetween.

In this case, the front substrate unit is spaced apart in a stripe shape on one surface of the front base plate, so that the pair of X and Y sustain electrodes arranged in parallel and continuous, and the X and Y sustain electrodes are covered. It consists of a combination of the front dielectric layer applied to one side of the front base plate, the rear substrate unit is in the form of a stripe on one side of the front base plate in a state perpendicular to the rear base plate and the aforementioned X and Y sustain electrodes Spaced apart and arranged in parallel to each other, a rear dielectric layer coated on one surface of the rear base plate so that the address electrodes are covered, and arranged vertically and horizontally on one surface of the rear dielectric layer, the front and rear bases Partitioning the interface space between the plates in a waffle shape to separately define a plurality of discharge cells corresponding to the X and Y sustain electrodes; When the discharge gas is discharged by the driving of the X and Y sustain electrodes and the address electrodes, and a predetermined amount of ultraviolet rays are radiated, it collides with the ultraviolet rays and the color of the predetermined color It consists of a combination of phosphors that emit light.

At this time, in the present invention, in parallel with the X and Y sustain electrodes inside the barrier ribs perpendicular to the address electrodes, the barrier rib electrodes having a structure having a long extension along the rear base plate are paired. Buried In this case, each individual discharge cell has a structure in which X and Y sustain electrodes are arranged on its upper side and partition electrodes are arranged on its left and right sides.

In the case of the present invention, as described above, since one of the discharge cells is centered and the partition electrodes are disposed on the left and right sides of the discharge cells, each discharge cell is driven by driving the X and Y sustain electrodes and the address electrodes. The discharge ions of the discharged discharge gas can be more stably confined in the inside thereof, and further counter discharge effects can be obtained by the action of the partition electrodes, and as a result, they can be arranged with other discharge cells disposed adjacent to each other. It is possible to form independent electric field blocks regardless.

As a result, when the present invention is achieved, the process of forming the electric field that proceeds inside the individual discharge cells may proceed intensively inside the individual discharge cells, irrespective of other adjacent discharge cells, It does not cause the cross-talk phenomenon as conventionally.

Through this process, when the conventional cross-talk phenomenon is suppressed, the discharge amount of the discharge gas contained in the individual discharge cells can be maximized to the maximum, and as a result, the final finished PDP can maintain the image quality above a certain level. have.

Hereinafter, the PDP according to the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 1, the PDP 50 according to the present invention, for example, an indirect discharge type PDP, includes a combination of a front substrate unit 10 and a rear substrate unit 30 facing each other.

In this case, a series of seal lines (not shown) are formed outside the front substrate unit 10 and the rear substrate unit 30 to seal the front substrate unit 10 and the rear substrate unit 30 smoothly. Assist in maintaining state.

A discharge gas, for example, a penning mixed gas, is accommodated between the front substrate unit 10 and the rear substrate unit 30 sealed by the seal line. The phening mixed gas has a configuration in which argon (Ar), xenon (Xe), and the like are mixed with neon gas and have a characteristic of easily discharging even at a low voltage.

At this time, as shown in the figure, the front substrate unit 10 is, for example, a pair of the front base plate 11 of the glass material and the rear substrate unit 30 side of the front base plate 11 is formed in pairs with each other For example, the X and Y sustain electrodes 12 and 18 of the indium tin oxide (ITO) material and the front dielectric layer 15 are formed in combination.

In this case, the X and Y sustain electrodes 12 and 18 are spaced apart from each other by a leading end of the front base plate 11 facing the rear substrate unit 30 to form a continuous structure in parallel. The front dielectric layer 15 has a structure in which a front surface of the front electrodes 100 is covered with a predetermined thickness on one surface of the front base plate 11.

At this time, the X sustain electrodes 12 receive a write pulse, a sustain discharge pulse, and the like from an external circuit block, for example, an X-side common driver (not shown), and then use the write pulse, sustain discharge pulse, and the like. It plays a role of generating wall charges in the individual discharge cells 38, which will be described later, and continuously maintains the discharge state of the discharge gas contained in the individual discharge cells 38. Play a role.

In addition, the Y sustain electrodes 18 receive scan pulses, sustain discharge pulses, and the like from other external circuit blocks, for example, the Y-side scan driver (not shown), and then use the scan pulses, sustain discharge pulses, and the like. Thus, the image data is scanned into the individual discharge cells 38, and similar to the aforementioned X sustain electrodes 12, the discharge of the discharge gas contained in the individual discharge cells 12 is performed. It is responsible for maintaining the state continuously.

At this time, as shown in the figure, each surface of the X and Y sustain electrodes 12 and 18 maintains a narrower width than the X and Y sustain electrodes 12 and 18, and the corresponding X and Y sustain electrodes A pair of X-Y auxiliary electrodes 13, 19 in electrical contact with (12, 18) is further disposed. In this case, the X-Y auxiliary electrodes 13 and 19 are made of, for example, a composite material of chromium-copper-chromium (Cr-Cu-Cr), so that the discharge holding function of the X-Y sustain electrodes 12 and 18 is maintained. To continue to assist

Here, a protective film layer 16, for example, an MgO layer is further disposed on the outermost surface of the front dielectric layer 15, and the protective film layer 16 serves to improve the discharge characteristics of the front dielectric layer 15 described above. do.

Meanwhile, the rear board unit 30 corresponding to the front board unit 10 mentioned above is similar to the front board unit 10 of the front, for example, the rear base plate 31 made of glass, and the rear base plate. And a combination of the address electrodes 32 and the rear dielectric layer 33 formed on the upper side of the front base plate 11.

In this case, the address electrodes 32 are disposed on one surface of the rear base plate 31 facing the front base plate 11 in a state perpendicular to the arrangement direction of the X and Y sustain electrodes 12 and 18 described above. Spaced apart in a stripe shape, a parallel continuous array is formed, and the rear dielectric layer 33 forms a structure in which a thickness is applied to one surface of the rear base plate 31 so that the address electrodes 32 are covered.

In this case, the address electrodes 32 selectively receive the individual discharge cells 38 on which actual display discharges are to be made by receiving, for example, an address pulse from another external circuit block, for example, an address driver (not shown). It plays a role of designation.

Here, on one surface of the rear dielectric layer 33, a plurality of partitions 36 formed of a combination of the longitudinal partition 34 and the transverse partition 35 are vertically arranged in a line.

The partitions 36 are formed of the front substrate unit 10 and the rear substrate unit 30 if the front substrate unit 10 and the rear substrate unit 30 mentioned above are integrally sealed by seal lines. A plurality of discharge cells corresponding to the above-described X and Y sustain electrodes 12 and 18 between the front substrate unit 10 and the rear substrate unit 30 by partitioning the interface space therebetween, for example, in a waffle shape. Let (38) be defined separately. In this case, the above-mentioned discharge gas is received in a certain amount in the individual discharge cells 36.

In this case, R, B, and G phosphors 37 are further coated inside the individual discharge cells 38 covering the inner surfaces of the partitions 36, and the R, G, and B phosphors 37 are described above. When the discharge gas contained in each of the discharge cells 38 is discharged by driving one of the X and Y sustain electrodes 12 and 18 and the address electrodes 32, thereby, ultraviolet rays of a predetermined size are emitted. By colliding with the ultraviolet rays, R, G, and B colors serve to induce light to be emitted toward the front substrate unit 10, for example.

Here, the R, G, and B phosphors 37 are continuously arranged in the color order of, for example, "RGB, RGB, ...." along the transverse direction of each of the individual discharge cells 38. When the B phosphor 37 emits ultraviolet rays by the above-described discharge process of the discharge gas, the B phosphor 37 collides with the ultraviolet rays so that the light of the R color, the G color, and the B color is the front substrate unit 10 as described above. ) Will emit light. The color arrangement of the R, G, B phosphors 37 may be variously modified according to the situation of the production line.

At this time, when the front dielectric layer 15 is discharged in each of the discharge cells 38 to generate a plurality of discharge ions, each of the X and Y sustain electrodes 12 and 18 is discharged. And similarly, the rear dielectric layer 33 discharges each of the discharge cells 38 to generate a plurality of discharge ions. Play a role in protecting them.

In the PDP 50 of the present invention having the above-described structure, as shown in the drawing, some of the partition walls 36 perpendicular to the address electrodes 32, that is, the transverse partition walls 35 are mentioned above. In parallel with one of the X and Y sustain electrodes 12 and 18, the barrier rib electrodes 100 having a linear shape extending along the back base plate 31 are elongated in a pair and embedded.

In this case, as shown in FIG. 2, each of the individual discharge cells 38 is provided with X and Y sustain electrodes 12 and 18 on its upper side and partition electrodes on its left and right sides. Obtain a structure in which 101,102,103,104 are arranged. The partition electrodes 101, 102, 103, and 104 are electrically floated with, for example, the X-Y sustain electrodes 12 and 18 to be driven independently.

The formation structure of the partition electrodes 101, 102, 103, 104 is a part of the present invention, and of course, the partition walls are not formed at all in the conventional partition walls.

In the conventional case, since each individual discharge cell has a structure in which the individual discharge cells are defined by the waffle-shaped partition walls without any supplementary structure and are closely arranged, each individual discharge cell is in unnecessary interference with other adjacent discharge cells. In this case, the so-called cross-talk phenomenon is caused between the individual discharge cells, so that the discharge gas contained in each discharge cell is obstructed in a series of discharge processes. For this reason, the finally completed PDP has no choice but to maintain image quality below a certain level.

However, in the case of the present invention, as described above, since each of the individual discharge cells 38 additionally arranged the partition electrodes (101, 102, 103, 104) on their left and right sides, it is larger than the conventional case therein The effect that the electric field of the value is formed can be obtained, and as a result, the discharge ions of the discharge gas discharged by the driving of the X and Y sustain electrodes 12 and 18 and the address electrodes 32 are stored therein. In addition to being able to be more stably confined, additional counter discharge effects can be obtained by the action of the partition electrodes 101, 102, 103, 104. Accordingly, each of the individual discharge cells 38, although defined by the waffle-shaped partition walls 36 to form a tightly arranged structure, independent of the other discharge cells disposed adjacent to the independent electric field block Can be formed.

As a result, when the present invention is achieved, the process of forming the electric field in the individual discharge cells 38 may proceed intensively inside the individual discharge cells 38, regardless of other adjacent discharge cells. In other words, the individual discharge cells 38 do not cause a cross-talk phenomenon as in the prior art.

Through this process, when the conventional cross-talk phenomenon is suppressed, the discharge amount of the discharge gas contained in the individual discharge cells 38 can be maximized to the maximum, and finally, the final finished PDP has a certain level of image quality or more. Can be maintained.

On the other hand, as shown in the figure, in the PDP 50 of the present invention having the above-described configuration, first, if a voltage of a predetermined magnitude is applied between the X sustain electrode 12 and the Y sustain electrode 18, the Y sustain So-called address discharge occurs between the electrode 18 and the address electrode 32. Thus, wall charges having opposite polarities are formed on the surface of the protective film layer 16 and the surface of the phosphor 37. Is generated. In this case, in the present invention, a predetermined magnitude of voltage is applied not only to the X and Y sustain electrodes 12 and 18 but also to the partition electrodes 101, 102, 103 and 104 disposed on the left and right sides of the discharge cell 38.

Subsequently, when a voltage having the same polarity as the above-described wall charge is applied between the X sustain electrode 12 and the Y sustain electrode 18, a so-called sustain discharge (B) between the X sustain electrode 12 and the Y sustain electrode 18 is applied. Sustain discharge occurs, whereby an electric field of a predetermined size is formed in the discharge space inside the discharge cell 38. Even in this case, in the present invention, not only the X and Y sustain electrodes 12 and 18, but also the partition electrodes 101, 102, 103 and 104 disposed on the left and right sides of the discharge cell 38 have the same polarity as the wall charges generated by the address discharge. Apply voltage.

As this series of field formation proceeds, the trace electrons in the discharge gas are accelerated rapidly, and these electrons strongly collide with the neutral particles included in the discharge gas, thereby ionizing each neutral particle into electrons and discharge ions. .

At this time, the ionized electrons are rapidly accelerated once again by the previous electric field to participate in collision with the neutral particles, and eventually, the discharge gas contained in the discharge cell 38 changes into a plasma state. In this manner, when the discharge gas is turned into plasma, at the same time, a certain amount of ultraviolet light is generated from the discharge gas, and the ultraviolet light collides with the phosphor 37 applied inside the discharge cell 38, for example, light of R color. The light may be emitted to the front substrate unit side 10.

Thereafter, when alternating voltages having different polarities are repeatedly applied between the X sustain electrode 12 and the Y sustain electrode 18, whenever the voltage changes between the X sustain electrode 12 and the Y sustain electrode 18. The discharge occurs, and the phosphor 37 is able to continuously maintain the previous light emission state by the ultraviolet rays generated at this time. In this case, of course, the alternating voltage is repeatedly applied not only to the X and Y sustain electrodes 12 and 18 but also to the partition electrodes 101, 102, 103 and 104 disposed on the left and right sides of the discharge cell 38.

As described above, in the present invention, when the partition electrodes 101, 102, 103, and 104 are additionally disposed on the left and right sides of the discharge cell 38, and the voltage is applied to the X and Y sustain electrodes 12 and 18 described above, the partition electrode By applying a voltage to the fields 101, 102, 103 and 104, the electric field of a larger value than the conventional case can be formed inside the discharge cell 38. As a result, as described above, the discharge ion of the discharge gas In addition to the more stable confinement inside the discharge cell 38, in addition to the X and Y sustain electrodes 12 and 18, it is possible to obtain an additional counter discharge effect by the action of the partition electrodes 101, 102, 103 and 104.

Meanwhile, FIG. 3 conceptually illustrates arrangements of the X and Y sustain electrodes 12 and 18, the X and Y auxiliary electrodes 13 and 19, the partition electrodes 101, 102, 103, 104, and the address electrode 32. have. In this case, for example, the address electrode 32 is arranged in the longitudinal center of the discharge cell 38, and the barrier rib electrode described above in the direction perpendicular to the address electrode 32, that is, in the horizontal side of the discharge cell 38. (102), the X auxiliary electrode 13, the X sustain electrode 12, the Y sustain electrode 18, the Y auxiliary electrode 19, the partition electrode 104, and the like are continuously arranged in a row.

At this time, in another embodiment of the present invention, the partition electrode 101 is electrically contacted with, for example, the X sustain electrode 12, and the partition electrode 104 is electrically contacted with, for example, the Y sustain electrode 18. . In this case, unlike the previous embodiment, each of the partition electrodes 101 and 104 is not driven independently, but forms a structure in electrical contact with the X and Y sustain electrodes 12 and 18, thereby maintaining this X and Y retention. It may be linked with the electrodes 12 and 18 and driven simultaneously.

When this embodiment of the present invention is applied, since there is no need to drive each of the partition electrodes 101 and 104 separately in the production line, there is no need to prepare a separate circuit block for driving the partition electrodes 101 and 104. As a result, it is possible to obtain an effect that the capacity of the entire circuit block is simplified than in the previous embodiment.

Of course, even in this embodiment of the present invention, since the electric field formed inside the discharge cell 38 can maintain a larger value than the conventional case by driving the partition electrodes 101, 104, in the production line The effect of more stable trapping of discharge ions of the discharge gas in the interior of the discharge cell 38, the effect of forming a stronger counter discharge in the interior of the discharge cell 38 can be easily ensured.

On the other hand, as shown in FIG. 4, in another embodiment of the present invention, the partition electrode 101 is in electrical contact with, for example, the X auxiliary electrode 13 instead of the X sustain electrode 12. The partition electrode 104 is in electrical contact with, for example, the Y auxiliary electrode 19 instead of the Y sustain electrode 18. Even in this case, unlike the previous embodiment, each of the partition electrodes 101 and 104 is not driven independently and forms a structure in electrical contact with the X and Y auxiliary electrodes 13 and 19, whereby The auxiliary electrodes 13 and 19 may be linked together and driven simultaneously.

Even when this embodiment of the present invention is applied, since there is no need to drive each of the partition electrodes 101 and 104 separately in the production line, a separate circuit block for driving the partition electrodes 101 and 104 is prepared. There is no need at all, and as a result, the effect of simplifying the capacity of the entire circuit block can be obtained.

As described above, in the present invention, a series of electrode lines are embedded in a part of partition walls defining individual discharge cells, and through these electrode lines, discharge cells having different discharge processes of discharge gas proceeding in the individual discharge cells are different. Irrespective of the above, by making it possible to proceed intensively inside the respective discharge cells, unnecessary cross-talk phenomenon caused between the individual discharge cells adjacent to each other can be suppressed in advance.

This invention shows the overall useful effect in the various types of PDP produced in the production line.

And while certain embodiments of the invention have been described and illustrated, it will be apparent that the invention may be embodied in various modifications by those skilled in the art.

Such modified embodiments should not be understood individually from the technical spirit or point of view of the present invention and such modified embodiments should fall within the scope of the appended claims of the present invention.

As described above in detail, in the PDP according to the present invention, the strip having a structure extending along the rear base plate in a state parallel to the X and Y sustain electrodes inside the partitions perpendicular to the address electrodes. The barrier rib electrodes of a shape are buried in pairs. In this case, each individual discharge cell has a structure in which X and Y sustain electrodes are arranged on its upper side and partition electrodes are arranged on its left and right sides.

In the case of the present invention, as described above, since one of the discharge cells is centered and the partition electrodes are disposed on the left and right sides of the discharge cells, each discharge cell is driven by driving the X and Y sustain electrodes and the address electrodes. The discharge ions of the discharged discharge gas can be more stably confined in the inside thereof, and further counter discharge effects can be obtained by the action of the partition electrodes, and as a result, they can be arranged with other discharge cells disposed adjacent to each other. It is possible to form independent electric field blocks regardless.

After all, when the present invention is achieved, the process of forming the electric field that proceeds inside the individual discharge cells can proceed intensively inside the individual discharge cells, irrespective of other adjacent discharge cells, It does not cause the cross-talk phenomenon as conventionally.

Claims (4)

It consists of the front and rear board unit which is integrally sealed while facing each other with the discharge gas filled, The front substrate unit includes a front base plate; X and Y sustain electrodes spaced apart in a stripe shape on one surface of the front base plate facing the rear substrate unit and arranged in parallel with each other in pairs; A front dielectric layer coated on one surface of the front base plate to cover the X and Y sustain electrodes, The rear substrate unit includes a rear base plate; Address electrodes perpendicular to the X-Y sustain electrodes and spaced apart in a stripe shape on one surface of the front base plate facing the front base plate, and arranged in parallel and in parallel; A rear dielectric layer coated on one surface of the rear base plate to cover the address electrodes; Arranged vertically and horizontally on one surface of the rear dielectric layer, the interface space between the front and rear base plates is partitioned into a waffle shape to individually discharge a plurality of discharge cells corresponding to the X and Y sustain electrodes. Partitions defined by; It is applied to each of the discharge cells in turn and arranged in succession, the discharge gas is discharged by an external force, and when the ultraviolet radiation, includes a phosphor that collides with the ultraviolet light to emit light of a certain color, A portion of the partition walls perpendicular to the address electrodes is embedded in a pair of barrier rib electrodes extending along the rear base plate in a state parallel to the X and Y sustain electrodes. Plasma display panel. The plasma display panel of claim 1, wherein the partition electrodes are in electrical contact with the X and Y sustain electrodes. The plasma display panel of claim 1, wherein the partition electrodes are electrically floated with the X and Y sustain electrodes to be driven independently. 2. The X and Y auxiliary electrodes of claim 1, wherein the X and Y auxiliary electrodes are further disposed on each surface of the X and Y sustain electrodes to assist the discharge holding function of the X and Y sustain electrodes. And an electrical contact with the plasma display panel.