KR100669387B1 - Plasma display panel - Google Patents

Abstract

The PDP of the present invention is an improved discharge cell structure, which is disposed between a front substrate and a rear substrate facing each other, and partitions a discharge cell between the front substrate and the rear substrate, and is formed on a partition wall formed of a dielectric material and formed on a wall of the partition wall. Concave-convex portion, and the sustain electrode and the scan electrode which is sequentially formed in the partition wall in a shape surrounding the discharge cell extending in one direction, the different color to the wall surface and the bottom surface of the partition wall partitioning the discharge cell And a phosphor layer formed by applying a phosphor of the present invention and an address electrode formed to intersect the sustain electrode and the scan electrode.

Plasma, ring structure, bulkhead, irregularities, protrusion

Description

Plasma display panel {Plasma display panel}

1 is a perspective view showing the configuration of a conventional three-electrode surface discharge plasma display panel.

2 is a partially exploded perspective view illustrating a plasma display panel configured according to an embodiment of the present invention.

3 and 4 are sectional views taken along the lines A-A and B-B of FIG. 2 respectively.

FIG. 5 is a perspective view illustrating a display electrode in the embodiment of FIG. 2. FIG.

FIG. 6 is a plan view illustrating an arrangement relationship between a partition and a sustain electrode in the embodiment of FIG. 2.

FIG. 7 is a plan view illustrating an arrangement relationship between a partition and a scan electrode in the exemplary embodiment of FIG. 2.

8 is a partially exploded perspective view illustrating a plasma display panel configured according to another embodiment of the present invention.

9 is a perspective view illustrating a state of a display electrode in the embodiment of FIG. 8.

FIG. 10 is a plan view illustrating an arrangement relationship between a partition and a discharge electrode in the embodiment of FIG. 8.

FIG. 11 is a plan view illustrating an arrangement relationship between a partition and a scan electrode in the embodiment of FIG. 8.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel for displaying an image using gas discharge, and more particularly, to a plasma display panel having an improved electrode structure.

Recently, a device employing a plasma display panel (hereinafter referred to as 'PDP') as a flat panel display device has a large screen, high quality, ultra-thin, light weight, and wide viewing angle, and is simpler to manufacture than other flat panel displays. And it is easy to enlarge, and it is attracting the spotlight as the next generation large flat panel display.

These PDPs are classified into a direct current (DC) type, an alternating current (AC) type, and a hybrid type (Hybrid) type according to the applied discharge voltage, and are classified into counter discharge type and surface discharge type according to the discharge structure.

The direct current type PDP has a structure in which all electrodes are exposed to a discharge space, and charges are directly transferred between corresponding electrodes. In the AC-type PDP, at least one electrode is surrounded by a dielectric layer, and discharge is performed by using wall charge instead of performing a direct charge transfer between the corresponding electrodes.

In the direct current type PDP, since the charge is directly transferred between the corresponding electrodes, there is a problem in that the electrode is severely damaged. Recently, an AC type PDP having a three-electrode surface discharge type structure is generally adopted. Has been.

As shown in FIG. 1, the conventional surface discharge PDP including the AC three-electrode surface discharge PDP includes a front substrate 200 and a rear substrate 300.

The rear substrate 300 includes an address electrode 330 for generating an address discharge, a rear dielectric layer 350 having the address electrode embedded therein, a partition wall 370 partitioning discharge cells, and both sides of the partition wall and the partition wall. The phosphor layer 390 coated on the back substrate that is not formed is formed.

The front substrate 200 spaced apart from and facing the rear substrate includes a pair of electrodes 220 and 230 for generating a sustain discharge, a front dielectric layer 250 having the electrodes 220 and 230 embedded therein, The protective film 290 is provided.

By the way, in the conventional PDP, the front substrate 200 through which visible light emitted from the phosphor layer 390 in the discharge space passes is provided with a pair of electrodes. At this time, these electrodes are used as a transparent electrode so as not to block the light from the discharge cell, this transparent electrode has a disadvantage of increasing the discharge voltage due to the high resistance. Therefore, in order to lower the resistance of the transparent electrode, an opaque metal electrode is used. Since the metal electrode does not transmit light, there is a problem of lowering the aperture ratio of the discharge cell.

Moreover, the electrodes thus formed are covered with a dielectric layer and a protective film, respectively, and thus, there is a problem that the transmittance of visible light emitted from the discharge cell is significantly reduced due to these factors.

In addition, in the conventional surface discharge PDP, an electrode which causes discharge is formed on the upper surface of the discharge space, that is, the inner surface of the front substrate 200 through which visible light passes. As a result, discharge is generated and diffused on the inner surface of the front substrate, thereby having an inherent problem of low luminous efficiency.

Furthermore, in the conventional surface discharge PDP, when used for a long time, charged particles of the discharge gas are caused by ion sputtering in the phosphor layer due to an electric field, causing a permanent afterimage.

The present invention was devised to solve various problems of the conventional plasma display panel, including the above-mentioned problems, and to provide a plasma display panel of the present invention by improving the electrode structure to significantly improve the aperture ratio and transmittance.

Another object of the present invention is to provide a plasma display panel of the present invention, which further improves the emission luminance by improving the barrier rib structure to increase the surface area on which the phosphor is applied.

In order to achieve the above object, the plasma display panel provided in one embodiment of the present invention,

The front substrate and the rear substrate facing each other, the discharge cell is located between the front substrate and the rear substrate to partition, the partition wall formed of a dielectric, the concave-convex portion formed in the wall of the partition wall, the discharge cell in the shape surrounding the The sustain electrode and the scan electrode which are sequentially positioned inside the partition wall and extend in one direction, and the phosphor layer and the sustain electrode formed by applying phosphors of different colors to the wall surface and the bottom surface of the partition wall partitioning the discharge cell. And an address electrode formed to intersect the scan electrode.

In the present invention, the uneven portion is preferably formed of at least one or more of the wall surface of the partition wall partitioning the discharge cell, the uneven portion may be formed of a plurality of projections.

In the present invention, the phosphors of different colors may include red, green, and blue phosphors, and the uneven parts may be selectively formed on discharge cells to which the green phosphors are applied.

In the present invention, the partition wall may include a first partition wall formed of the front substrate to fill the sustain electrode and the scan electrode, and a second partition wall including the concave-convex portion on the back substrate and coated with a phosphor.

In addition, in the present invention, the partition wall may include a horizontal partition formed to extend in a direction crossing the address electrode, and a vertical partition formed in a direction crossing the same, wherein the sustain electrode and the scan electrode are embedded in the horizontal partition wall And a line electrode extending in the extending direction, and a connecting electrode embedded in the vertical partition wall and connecting the line electrode.

In order to achieve the above object, the plasma display panel provided in another embodiment of the present invention,

The front substrate and the rear substrate facing each other, the discharge cell is located between the front substrate and the rear substrate to partition, the partition wall formed of a dielectric, the concave-convex portion formed in the wall of the partition wall, the discharge cell in the shape surrounding the A phosphor layer formed by applying phosphors of different colors to the bottom surface and the scan electrode and the discharge electrode which are sequentially positioned inside the barrier rib, and are formed to be elongated in the direction crossing each other, and the wall surface and the bottom surface of the barrier rib partitioning the discharge cell. Include.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

2 is a partially exploded perspective view showing a plasma display panel constructed in accordance with an embodiment of the present invention. Referring to this embodiment will be described as follows.

Plasma display panel according to an embodiment of the present invention (hereinafter referred to as 'PDP') is a discharge cell 18 partitioned by a partition 16 between the front substrate 20 and the rear substrate 10 facing each other (18; 18R, 18G, 18B), the partition wall 16 partitioning the discharge cells 18 forms a structure in which the display electrodes 25 are embedded to surround the discharge cells.

The front substrate 20 is formed of a transparent glass substrate through which visible light is transmitted, and is disposed in parallel with each other in a state opposite to the rear substrate 10.

A first partition 161 is formed between the front substrate 20 and the rear substrate 10. The first partition wall 161 is formed of the front substrate 20 to partition the discharge cells 18 and to embed the display electrodes 25 to surround the discharge cells 18.

In the present exemplary embodiment, the display electrode 25 is formed inside the first partition 161 so as to surround the discharge cell 18. In the present embodiment, the display electrode 25 is a scan electrode 21 which works with the address electrode 12 to select a discharge cell, and sustains to maintain discharge in the selected discharge cell by working with the scan electrode 21. It consists of an electrode 23.

In the present embodiment, the scan electrode 21 and the sustain electrode 23 are preferably arranged so as to surround the upper portion of the discharge cell 18. Here, when the upper part of the discharge cell 18 includes the 2nd partition 163 mentioned later, it means the part which is higher than the phosphor layer 19 formed in this 2nd partition 163.

The first partition 161 partitions the discharge cells 18, which are independent discharge spaces, and the scan electrode 21 and the sustain electrode 23, which are formed of a dielectric material and are embedded together in the first partition 161, are separated from each other. Prevents energization The first partition wall 161 prevents charged particles from directly colliding with the display electrode 25 to damage them, and induces charged particles to accumulate wall charges.

In addition, a second partition 163 may be further formed between the first partition 161 and the back substrate 10. In this case, the second partition wall 163 is disposed between the first partition wall 161 and the back substrate 10 to divide the discharge cell 18 in combination with the first partition wall 161, and the second partition wall ( Phosphors are applied to the wall surface and the bottom surface of the 163 to form the phosphor layer 19.

In the present embodiment, the discharge cell 18 is described as being partitioned by a combination of the first partition 161 and the second partition 163, but the first partition 161 and the second partition 163 are integrally formed. It may be formed as.

 In FIG. 2, the partition walls 16 are spaced apart from each other, and the vertical partition walls 161a and 163a extending in the extending direction of the address electrode 12 (the y-axis direction in the drawing) and the vertical partition walls 161a and 163a. The discharge cells 18 are formed in a lattice shape by having horizontal partitions 161b and 163b extending on the same plane and spaced apart from each other in a direction crossing the vertical partitions 161a and 163a. The present invention is not limited thereto and may be partitioned into various shapes. Preferably, the discharge cells 18 are formed in a circular shape in a circular shape.

On the other hand, it is preferable that the first partition 161 is covered by the protective film 27. The protective layer 27 prevents charged particles from colliding with the first barrier rib 161 and damaging the first barrier rib 161 and emitting secondary electrons during discharge.

In addition, when the second partition 163 further includes the first partition 161 and the second partition 163 defining the discharge cell 18, the phosphor layer 19 is formed to have the same height as the second partition 163. It is preferable. That is, the first barrier rib 161 is made of a dielectric material so that discharge is easily generated to exhibit excellent memory characteristics, and the phosphor layer 19 is formed by the second barrier rib 163 formed under the first barrier rib 161. It is desirable to form so that visible light is generated in a wide area.

To this end, an uneven portion 17 is further formed on the wall surface of the second partition 163, which will be described later.

The partition wall 16 is formed over the dielectric layer 14 formed over the entire opposing surface of the back substrate 10, and the dielectric layer 14 covers the address electrode 12 provided along each discharge cell. The dielectric layer 14 is formed as a dielectric that can induce charge while preventing cations or electrons from colliding with the address electrode 12 when it is discharged, thereby damaging the address electrode 12. ₂ O ₃ , SiO ₂ and the like.

The address electrode 12 is formed on the opposite surface of the back substrate 10, and is formed to extend in the column direction (y-axis direction in the drawing) of the discharge cells 18 to cross each discharge cell.

In the discharge cells 18, phosphor layers 19 that emit visible light by being excited by ultraviolet rays generated during discharge are formed. The phosphor layer 19 is formed over the wall surface of the second partition wall 163 and the bottom surface defined by the second partition wall 163 as shown. In this embodiment, since the uneven part 17 is formed in the wall surface of the 2nd partition 163, the surface area of a wall surface becomes large and the quantity of fluorescent substance apply | coated to the wall surface of this 2nd partition 163 increases compared with the former. Done.

The phosphor layer 19 is formed by selecting any one of red, green, and blue phosphors to realize a color image. Accordingly, the phosphor layers 18R, 18G, and 18B of red, green, and blue are formed. Separated by. As described above, a discharge gas in which neon (Ne), xenon (Xe), and the like are mixed is filled in the discharge cells 18 in which the phosphor layer 19 is disposed.

Hereinafter, the partition structure of this invention is demonstrated with reference to FIG. 3 and FIG. 3 and 4 are sectional views taken along line A-A and line B-B of FIG.

Referring to these drawings, in the present exemplary embodiment, the second partition wall 163 includes a horizontal partition wall 163b extending in the direction in which the display electrode extends and a vertical partition wall 163a formed in the direction crossing the partition wall. Accordingly, the discharge cells 18 are partitioned into a lattice shape.

As such, a plurality of protrusions are formed on the wall surface 16c of the horizontal partition wall 163b and the vertical partition wall 163a that divide the discharge cells in four directions to form the uneven portion 17. The uneven portion 17 increases the surface area of the partition wall surface to increase the application area on which the phosphor can be applied. As a result, it is possible to increase the application amount of the phosphor than in the conventional PDP to improve the brightness of the discharge cells. In addition, since a plurality of projections are formed on the wall surface, the phosphor is not allowed to flow down the wall surface so that the phosphor can be uniformly applied to the partition wall surface.

As such, the uneven portion 17 formed on the wall surface of the partition wall 16 is preferably formed in at least one place.

In addition, the uneven portion 17 may be selectively formed. In general, red, green, and blue phosphors have the lowest luminescence brightness based on the same material as green phosphors. Therefore, in the present embodiment, the coating area of the phosphor can be increased by providing the uneven portion only on the wall surface of the partition wall forming the green discharge cells.

As a result, a uniform emission luminance can be guaranteed for each color discharge cell regardless of the physical characteristics of the phosphor.

In this way, a phosphor is provided on the wall surface and the bottom surface of the partition wall having the uneven portion 17 to form a phosphor layer for each discharge cell. At this time, the uneven portion 17 prevents the phosphor provided in the paste state from flowing down so that the phosphor can be uniformly fixed to the wall surface.

Next, the display electrode constructed according to the present exemplary embodiment will be described in detail with reference to FIGS. 5 to 7. 5 is a perspective view illustrating a display electrode according to an exemplary embodiment, and FIGS. 6 and 7 are plan views illustrating a positional relationship between a partition wall and a scan electrode, and a partition wall and a sustain electrode.

In the present exemplary embodiment, the display electrode 25 is formed by sequentially embedding the sustain electrode 23 and the scan electrode 21 in the first partition wall 161 from the front substrate 20 toward the rear substrate 10. It extends long along the direction crossing the address electrode 12. In this case, the scan electrode 21 and the sustain electrode 23 extend in opposite directions to each other.

In this embodiment, since the scan electrode 21 is formed close to the address electrode 12, the discharge voltage between the scan electrode 21 and the address electrode 12 can be lowered than before.

The storage electrode 23 is buried in the first partition wall 161 adjacent to the front substrate 20, and the scan electrode 21 is spaced downward from the storage electrode 23. It is embedded in the. Here, since the sustain electrode 23 and the scan electrode 21 are formed in the same shape, the description of the sustain electrode 23 replaces the description of the scan electrode 21.

In the present exemplary embodiment, the sustain electrode 23 is embedded in the line electrode 231 formed in the horizontal partition wall 161b and in the vertical partition wall 161a formed along the direction crossing the horizontal partition wall 16b. The connection electrode 233 is included.

Based on the drawings, the line electrode 231 is formed inside the horizontal partition wall 16b formed in the row direction (x-axis direction in the drawing) of the discharge cells 18, and the extension direction of the horizontal partition wall 16b is formed. It is formed along the length.

At this time, the line electrode 231 is formed in one horizontal partition wall 161b so that the adjacent line electrodes 231 can be provided for each discharge cell adjacent to each other (in the y-axis direction of the drawing). Accordingly, a pair of line electrodes 231 are positioned along the horizontal partition wall 161b.

In addition, a connection electrode 233 is formed inside the vertical partition wall 16a formed along the column direction (y-axis direction of the drawing) of the discharge cell 18, and the connection electrode 233 has one row of discharge cells ( The line electrodes 231 formed on the pair of horizontal partition walls 161b defining 18 are connected to each other (see Fig. 6).

Accordingly, the sustain electrodes 23 are positioned in the row direction with respect to the discharge cells 18 in one row, with the line electrodes 231 interposed therebetween with the discharge cells 18 interposed therebetween. 233 is positioned to form a ladder shape substantially surrounding the discharge cell 18.

In such a shape, since the sustain electrode 23 and the scan electrode 21 are formed in each of the first partition walls 161, and are buried in sequence, the sustain electrode 23 and the scan electrode 21 are discharged. While being formed to wrap around the cell, the cells face each other in the up and down directions on the wall surface of the partition partitioning the discharge cell.

As such, since the display electrode 25 of the present exemplary embodiment is not disposed on the front substrate 20 through which visible light is transmitted, but is disposed on the side of the discharge space, the display electrode 25 does not need to use a transparent electrode having a large resistance as the display electrode. Since low electrodes, for example metal electrodes, can be used, the discharge response speed is high, and low voltage driving is possible without distortion of the waveform.

Hereinafter, the discharge phenomenon in the sustain discharge cycle according to the general driving method in which the PDP of the present embodiment configured as described above uses the memory characteristics of wall charges is as follows.

When an address voltage is applied between the address electrode 12 and the scan electrode 21, the discharge cell 18 to be discharged is selected, and wall charges on the scan electrode 21 of the selected discharge cell 18. Accumulates.

Subsequently, when a positive voltage is applied to the sustain electrode 23 and a lower voltage is applied to the scan electrode 21, the voltage difference between the scan electrode 21 and the sustain electrode 23 is applied to the sustain electrode 23. This causes wall charges to move in opposite directions. The movement of the wall charges causes a discharge while colliding with the discharge gas in the discharge cell 18, and the discharge is generated by the discharge electrode 18 and the scan electrode 21 close to each other. More likely to occur from the part.

In the present embodiment, since the sustain electrode 23 and the scan electrode 21 face each other along the circumference of the discharge cell 18, the discharge is lower than in the prior art in which the display electrode is limited only to the upper surface of the discharge cell. The likelihood of occurrence increases significantly.

Over time, if the voltage difference between the two electrodes 21, 23 is still sufficiently large enough, the electric field formed between the surfaces of the two electrodes 21, 23 is gradually concentrated so that the discharge is discharged in the entire discharge cell 18. Will spread to

In the present embodiment, the discharge is generated in the ring shape on the four sides of the discharge cell 18 and diffused to the center, whereas in the prior art, the discharge is generated on the upper surface of the discharge cell and diffused to the center portion, As compared with the discharges in the prior art, the discharge of is significantly increased in its diffusion range.

In addition, in the present embodiment, since the plasma generated by the discharge is formed in a ring shape along the wall surface of the discharge cell 18 and then diffused to the center, the volume thereof is greatly increased so that the amount of visible light is greatly increased, and the plasma is discharged. As the center of the cell 18 is concentrated, the space charge can be utilized, thereby enabling low voltage driving and improving luminous efficiency.

In addition, since the plasma is concentrated in the center of the discharge cell 18 and the electric field by the display electrode 25 is formed on both sides of the plasma, the charge is concentrated in the center of the discharge cell 18, so that the charge is transferred to the phosphor. It is possible to prevent the ion sputtering of the source.

Hereinafter, a PDP according to another embodiment of the present invention will be described. In the following description, the same reference numerals are used for the same components as those described above, and a detailed description thereof will be omitted. 8 is a partially exploded perspective view showing a schematic view of a PDP according to another embodiment of the present invention.

The PDP of this embodiment includes discharge cells 18 (18R, 18G, 18B) partitioned by partition walls 16 between the front substrate 20 and the rear substrate 10 facing each other, and the discharge cells 18 The display electrode 40 is formed while surrounding the periphery.

At this time, in this embodiment, the display electrode 40 is the discharge electrode 41 which selects the discharge cell 18 to hold the discharge, and the scan electrode which selects the discharge cell 18 by working with the discharge electrode 41. (43).

The discharge electrode 41 and the scan electrode 43 are buried in the first partition wall 161, and the discharge electrode 41 and the scan electrode 43 are directed toward the rear substrate 10 on the front substrate 20. ) Are formed sequentially (or in reverse order). Meanwhile, the first partition wall 161 is formed of a dielectric material to prevent the discharge electrode 41 and the scan electrode 43 from being energized.

Therefore, in this embodiment, unlike the above-described embodiment, the address electrode 12 is not formed. Therefore, the dielectric layer protecting the address electrode 12 may not be selectively formed, thereby further increasing the application amount of the phosphor applied to the discharge cells 18. In addition, since the concave-convex portion 17 is further formed as the partition wall as described above, this also increases the application amount of the phosphor to increase the luminescence brightness.

On the other hand, in the PDP of this embodiment, since the address electrode does not exist, the discharge electrode 41 and the scan electrode 43 are formed to cross each other. For example, when the discharge electrode 41 is formed to extend in the same direction as the extending direction of the horizontal partition wall 161b, the scan electrode 43 is formed to extend along the extending direction of the vertical partition wall 161a crossing the same. .

9 is a perspective view illustrating a display electrode according to another exemplary embodiment of the present invention, and FIGS. 10 and 11 illustrate a partition wall and a discharge electrode, and a partition wall and a scan electrode. A plan view showing the positional relationship.

A shape of a display electrode according to another exemplary embodiment of the present invention will be described with reference to the drawings.

In the present embodiment, the display electrode 40 includes the first partition wall 161 in which the discharge electrode 41 and the scan electrode 43 are sequentially (or vice versa) from the front substrate 20 toward the rear substrate 10. It is embedded in). At this time, since the PDP of the present embodiment does not have an address electrode, the discharge electrode 41 and the scan electrode 43 should be formed to cross each other. For example, when the discharge electrode 41 is formed to extend in the same direction as the extending direction of the horizontal partition wall 161b, the scan electrode 43 is formed to extend along the extending direction of the vertical partition wall 161a crossing the same. .

Hereinafter, an example in which the discharge electrode 41 is formed long along the extending direction of the horizontal partition wall 161b will be described, but the present invention is not limited thereto.

In the present embodiment, the discharge electrode 41 is embedded in the horizontal partition 161b and is formed to extend in the extending direction thereof, and the discharge electrode 41 is embedded in the vertical partition 161a to connect the line electrode 411. And a connecting electrode 413.

Based on the drawings, the line electrode 411 is formed inside the horizontal partition wall 161b formed in the row direction (x-axis direction of the drawing) of the discharge cell 18, and the extension direction of the horizontal partition wall 161b. It is formed along the length.

At this time, the line electrode 411 is formed in each of the horizontal barrier rib 161b so that a pair of line electrodes 411 can be provided for each discharge cell adjacent to each other (in the y-axis direction of the drawing). Therefore, a pair of line electrodes 411 are positioned along the horizontal partition wall 161b.

In addition, a connection electrode 413 is formed inside the vertical partition wall 161a formed along the column direction (y-axis direction of the drawing) of the discharge cell 18, and the connection electrode 413 is a discharge cell of 1god ( Line electrodes 411 respectively formed on a pair of horizontal partition walls 161b partitioning 18 are connected to each other (see FIG. 10).

Accordingly, the discharge electrodes 41 are positioned in the row direction with respect to the discharge cells 18 in one row with the line electrodes 411 interposed therebetween with the discharge cells 18 interposed therebetween. 413 is positioned to form a ladder shape substantially enclosing the discharge cells 18, and extends along the x-axis direction as a whole.

In contrast, the scan electrode 43 is embedded in the vertical partition 161a and is formed to extend in the extending direction thereof, and the scan electrode 43 is embedded in the horizontal partition 161b to connect the line electrode 431. It comprises a connection electrode 433.

Based on the drawings, the line electrode 431 is formed inside the vertical partition wall 161a formed in the column direction (y-axis direction in the drawing) of the discharge cell 18, and the extension direction of the vertical partition wall 161a is formed. It is formed along the length.

At this time, the line electrode 431 is formed in each of the vertical partition walls 161a so that the line electrodes 431 may be provided for each of the neighboring discharge cells (in the x-axis direction of the drawing). Accordingly, a pair of line electrodes 431 are positioned along the interior of the vertical partition wall 161a.

In addition, a connecting electrode 433 is formed inside the horizontal partition wall 161b formed along the row direction (x-axis direction of the drawing) of the discharge cell 18, and the connecting electrode 433 has one row of discharge cells ( Line electrodes 431 formed on the pair of vertical partition walls 161a which partition 18 are connected to each other (see Fig. 11).

Accordingly, the scan electrodes 43 are positioned in the column direction with respect to the discharge cells 18 in one column with the line electrodes 431 interposed therebetween with the discharge cells 18 interposed therebetween. 433 is positioned to form a ladder shape substantially enclosing the discharge cells 18, and is formed to extend in the y-axis direction as a whole.

Therefore, in the present embodiment, the discharge electrode 41 extends in the x-axis direction while surrounding the discharge cell, whereas the scan electrode 43 extends in the y-axis direction while surrounding the discharge cell, thereby discharging the discharge electrode. And the scan electrode cross each other in the discharge cell.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

According to the present invention, since there is no other element other than the substrate as the front substrate through which the visible light passing through the image is solved, the aperture ratio can be significantly improved.

In addition, the PDP of the present invention is symmetrical in the shape of the discharge cell in the horizontal and vertical direction, the discharge area is evenly enlarged, the electric field can be concentrated in the center has the effect of improving the luminous efficiency.

In addition, the PDP of the present invention is discharged in the aspect of forming the discharge space and diffused to the center portion of the discharge space, the volume of the plasma by the discharge is significantly increased, the amount of plasma significantly increases the effect of improving the luminous efficiency have.

In addition, the PDP of the present invention is discharged from the side forming the discharge space and diffused to the center of the discharge space, thereby concentrating the plasma to the center portion of the discharge space, due to the voltage applied to the discharge electrode formed on the side Plasma is collected at the center of the discharge space under the influence of the electric field, so that space charge can be utilized for discharge.

In addition, since the PDPs of the present invention are installed to face each other on the basis of the partition wall, the discharge voltage can be significantly reduced by reducing the gap between the electrodes. Therefore, the driving can be performed even at a low voltage, thereby significantly improving the luminous efficiency.

In addition, PDP is difficult to drive a low voltage when using a high concentration of Xe gas as a discharge gas in order to increase the luminous efficiency, the low voltage can be driven as described above in the PDP of the present invention, even if a high concentration of Xe gas is used as a discharge gas It is possible to drive the low voltage can improve the luminous efficiency.

In addition, the PDP of the present invention has a high discharge response speed and enables low voltage driving. In the PDP of the present invention, since the display electrode is not disposed on the front substrate through which visible light is transmitted, but is disposed on the side of the discharge space, it is not necessary to use a transparent electrode having a large resistance as the display electrode. Since it can be used as a display electrode, the discharge response speed is high, and low voltage driving is possible without distortion of the waveform.

In addition, the PDP of the present invention can prevent permanent persistence at source. In the PDP of the present invention, the electric field due to the voltage applied to the discharge electrode formed on the side of the discharge space concentrates the plasma in the center of the discharge space, so that the ions generated by the discharge are discharged to the phosphor by the electric field even after a long discharge. By preventing the collision, it is possible to fundamentally prevent the problem of permanent afterimage caused by phosphor damage caused by ion sputtering. In particular, when using a high concentration of Xe gas as the discharge gas, the problem of permanent afterimage is very serious, in the case of the present invention it is possible to prevent such permanent afterimage inherently.

Further, the PDP of the present invention can increase the surface area of the partition wall surface coated with the phosphor by providing the uneven portion as the partition wall. As a result, the amount of phosphor applied to the discharge cells is increased as compared with the past, and there is an effect of significantly improving the emission luminance of each discharge cell than before. Furthermore, in the present invention, the uneven portion is selectively configured for the green discharge cells having a lower luminance than the discharge cells of different colors, thereby increasing the emission luminance of the green discharge cells than the discharge cells of the other colors. There is an effect of improving the luminance step difference.

Claims (13)

A front substrate and a rear substrate facing each other; A partition wall disposed between the front substrate and the rear substrate to partition a discharge cell and formed of a dielectric; An uneven portion formed on the wall 의 of the partition wall; A sustain electrode and a scan electrode sequentially positioned in the partition wall in a shape surrounding the discharge cell and extending in one direction; A phosphor layer formed by applying phosphors of different colors to a wall surface and a bottom surface of a partition wall partitioning the discharge cells; And, An address electrode formed to intersect the sustain electrode and the scan electrode; The partition wall, A first barrier rib filled with the sustain electrode and the scan electrode and formed adjacent to the front substrate; And And a second partition wall formed adjacent to the rear substrate and having the uneven portion and coated with the phosphor. The method of claim 1, And the uneven portion is formed of at least one or more of wall surfaces of a partition wall partitioning the discharge cell. The method of claim 1, The plasma display panel of which the uneven portion is formed of a plurality of projections. The method of claim 1, The phosphor includes a red, green, blue phosphor, And the concave-convex portion is selectively formed with respect to a discharge cell to which the green phosphor is coated. delete The method of claim 1, The barrier rib includes a horizontal barrier rib formed to extend in a direction crossing the address electrode, and a vertical barrier rib formed in a direction crossing the barrier rib. And the sustain electrode and the scan electrode embedded in the horizontal barrier rib and extending in the extending direction, and a connection electrode embedded in the vertical barrier rib and connecting the line electrode. The method of claim 1, And a sustain electrode and a scan electrode sequentially formed from the front substrate toward the rear substrate. A front substrate and a rear substrate facing each other; A partition wall disposed between the front substrate and the rear substrate to partition a discharge cell and formed of a dielectric; An uneven portion formed on the wall 의 of the partition wall; A discharge electrode and a scan electrode which are sequentially disposed in the partition wall in a shape surrounding the discharge cell and are formed to extend in a direction crossing each other; And a phosphor layer formed by applying phosphors of different colors to the wall surface and the bottom surface of the partition wall partitioning the discharge cell. The partition wall, A first barrier rib filled with the discharge electrode and the scan electrode and formed adjacent to the front substrate; And And a second partition wall formed adjacent to the rear substrate and having the uneven portion and coated with the phosphor. The method of claim 8, And the uneven portion is formed of at least one or more of wall surfaces of a partition wall partitioning the discharge cell. The method of claim 8, The plasma display panel of which the uneven portion is formed of a plurality of projections. The method of claim 8, The phosphor includes a red, green, blue phosphor, And the concave-convex portion is selectively formed with respect to a discharge cell to which the green phosphor is coated. delete The method of claim 8, The barrier rib includes a horizontal barrier rib formed to extend in a direction crossing the address electrode, and a vertical barrier rib formed in a direction crossing the barrier rib. The scan electrode includes a line electrode embedded in the horizontal partition wall extending in the extending direction, and a connecting electrode embedded in the vertical partition wall to connect the line electrode, And a discharge electrode, a line electrode embedded in the vertical barrier rib and extending in the extending direction thereof, and a connection electrode embedded in the horizontal barrier rib and connecting the line electrode.

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