KR100312508B1 - Radio Frequency Plasma Display Panel Driving - Google Patents

Abstract

The present invention relates to a high frequency plasma display panel capable of increasing the efficiency of sustain discharge while reducing the height of the partition wall and the frequency of the high frequency signal.

The high frequency plasma display panel according to the present invention includes first and second electrodes formed on the lower substrate so as to be perpendicular to each other to cause an address discharge, partition walls vertically formed on the lower substrate, and formed in opposing partition walls to the high frequency signal. And third and fourth electrodes which cause sustain discharge.

Accordingly, the sustain discharge is long between the two electrodes in the partition wall, so that the height of the partition wall and the frequency of the high frequency signal can be lowered.

Description

Radio Frequency Plasma Display Panel Driving

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high frequency plasma display panel, and more particularly, to a high frequency plasma display panel capable of increasing the efficiency of sustain discharge while reducing the height of the partition wall and the frequency of the high frequency signal.

Plasma Display Panel (hereinafter referred to as 'PDP') is a display device in which ultraviolet light generated by gas discharge excites a phosphor to generate visible light from the phosphor. PDP has the advantages of being thin, light, high-definition large screen, and wider viewing angle than the cathode ray tube (CRT), which has been the dominant display device. Recently, researches on high frequency (hereinafter referred to as 'RF') PDPs that can significantly improve discharge efficiency and brightness compared to conventional AC surface discharge PDPs have been actively conducted. In the RF PDP, electrons vibrating in the discharge space of the discharge cell by the high frequency signal continuously ionize the discharge gas, thereby causing continuous discharge for most of the discharge time. In the PDP, the discharge cells forming the pixel unit are arranged in a matrix to form the entire screen.

1 is a longitudinal sectional view of a panel showing a discharge cell structure of a conventionally developed RF PDP. Referring to FIG. 1, the RF PDP includes an address electrode 26 formed on the lower substrate 24, a first dielectric layer 28 formed on the lower substrate 24 and the address electrode 26, and an address electrode 26. Scan electrode 30 formed on the first dielectric layer 28 so as to be orthogonal to the second dielectric layer, the second dielectric layer 32 formed on the first dielectric layer 28 and the scan electrode 30, and on the second dielectric layer 32. A barrier layer 36 formed on the barrier layer 36, a barrier rib 36 vertically formed on the barrier layer 34 to distinguish respective discharge cells, a phosphor 38 coated on an inner wall of the barrier rib 36, and a barrier rib 36. The upper substrate 40 disposed in parallel with the lower substrate 24 with the interposed therebetween, the high frequency electrode 42 formed on the rear surface of the upper substrate 40 in a direction parallel to the scan electrode 30, and the high frequency electrode 42. The upper dielectric layer 44 formed on the upper substrate 40 formed thereon, and the discharge space 46 formed surrounded by the upper substrate 40, the lower substrate 24 and the partition 36. Data pulses and scan pulses are applied to the address electrode 26 and the scan electrode 30 to cause address discharge, respectively. The first dielectric layer 28 insulates the address electrode 26 from the scan electrode 30. In the second dielectric layer 32, wall charges are accumulated during address discharge. The protective film 34 protects the dielectric layer 32 from sputtering during discharge to extend the life of the discharge cell, and also generates secondary electrons during discharge to improve discharge efficiency. The partition wall 36 formed vertically on the lower plate 20 separates each discharge cell and serves to suppress mutual interference between adjacent discharge cells. The high frequency electrode 42 is applied with a high frequency driving voltage for causing high frequency sustain discharge. The phosphor 38 is excited by vacuum ultraviolet rays generated during sustain discharge to generate visible light.

2 is a diagram illustrating a driving waveform applied to each electrode to drive the RF PDP having such a discharge cell structure. A conventional RF PDP discharge process will be described with reference to FIG. 2. First, a high frequency signal is continuously supplied to the high frequency electrode 42. When no charged particles are generated in the discharge space 46 of the discharge cell, even if a high frequency signal is applied to the high frequency electrode 42, no discharge occurs. In a section in which the data pulse is supplied to the address electrode 26 and the scan pulse is supplied to the scan electrode 30, an address discharge for cell selection occurs between the address electrode 26 and the scan electrode 30. In this process, charged particles such as electrons are generated in the discharge space 46 of the selected discharge cell, and wall charges are accumulated in the second dielectric layer 32. Accumulated wall charges lower the discharge voltage during sustain discharge. In the section b where the address discharge is completed, electrons having relatively high mobility among the charged particles generated in the discharge space 46 are induced by the high frequency signal supplied to the high frequency electrode 42 to continuously generate sustain discharge. The high frequency signal in which the polarity is alternately changed generates an electric field in which the up / down direction is alternately changed in the discharge space 46. The electrons in the discharge space 46 vibrate up and down by this electric field. In the three-electrode structure shown in FIG. 1, the electrons in the discharge space 46 are transferred to the high frequency electrode 42 and the lower plate 20 in the upper plate 22 because the scan electrode 30 serves as a ground electrode for the high frequency signal during sustain discharge. It vibrates up and down between the scan electrodes 30 in the (). The vibrating electrons excite the discharge gas filled in the discharge space 46 and cause discharge. When the ultraviolet rays generated in the discharge space 46 during discharge excite the phosphor 38 coated on the inner wall of the partition 36, visible light is generated, thereby realizing an image of the PDP. In order to stop the sustain discharge, an erase pulse should be supplied to the address electrode 26 or the scan electrode 30 (section c in FIG. 2). The erase pulse applies an attraction force to the electrons so that the electrons in the discharge space 46 no longer vibrate and are attracted to one electrode. As a result, the electrons are dissipated in the discharge space 46 to stop the sustain discharge.

Conventional RF PDPs driven by such a discharge mechanism have some structural problems. First, in the conventional structure, a high frequency signal causing sustain discharge is applied between the high frequency electrode 42 in the upper plate 22 and the scan electrode 30 in the lower plate. In order not to interfere with the vibrating movement of electrons in the discharge space 46 by the high frequency signal, the distance between the high frequency electrode 42 and the scan electrode 30 should be sufficiently secured. The vibration width of the electrons vibrating in the discharge space 46 depends on the frequency of the high frequency signal. In other words, as the frequency of the high frequency signal decreases, the vibration width of the electrons increases. If the frequency of the high frequency signal is not high enough and the gap between the high frequency electrode 42 and the scan electrode 30 is not sufficiently secured, the electrons in the discharge space 46 cannot continuously vibrate in response to the high frequency signal. Discharge does not continue by colliding with and dissipating the upper and lower inner walls of the discharge cell. Accordingly, in order to increase the efficiency of the sustain discharge, the distance between the two electrodes 30 and 42 causing the frequency of the high frequency signal or the sustain discharge must be sufficiently secured. The method of increasing the frequency of the high frequency signal in order to reduce the vibration width of the electrons requires a driving circuit and a driving method capable of processing a high frequency signal. This is a difficult method to apply in terms of technology and cost. Therefore, there is a demand for a method of performing sustain discharge with high efficiency while lowering the frequency of the high frequency signal as much as possible. In order to lower the frequency of the high frequency signal, the distance between the electrodes 30 and 42 causing sustain discharge must be sufficiently secured. In the conventional structure, since the distance between the high frequency electrode 42 and the scan electrode 30 is determined according to the height of the partition 36, there is a burden of forming the partition 36 as high as possible to increase the efficiency of sustain discharge. . However, conventional barrier rib manufacturing methods such as screen printing and sand blasting are difficult to achieve high barrier ribs of 0.5 mm or more. In addition, even if the height of the barrier rib is formed to be 1 mm or more, the cell depth becomes deep, and thus, phosphors cannot be uniformly applied to the inner wall of the barrier rib, which causes problems such as reduced transmittance of visible light generated in the phosphor.

Another problem with the conventional RF PDP having a three-electrode structure is that the driving method is complicated because the scan electrode 30 is commonly used for the address discharge and the high frequency sustain discharge, and electrical interference occurs between the two discharges. Is the point. In particular, the high frequency signal applied to the discharge cell affects the AC voltage source supplying the scan pulse through the scan electrode 30, so that the address discharge is affected by the high frequency signal. In order to prevent such a problem, the conventional RF PDP driving apparatus employs a method of placing a low pass filter between the scan electrode 30 and the address electrode 26 and the AC voltage source. However, this makes the driving circuit more complicated.

In the conventional RF PDP, the dielectric layer on the address electrode 26 causing the address discharge has a very thick structure. Since the thickness of the dielectric layer increases as the thickness of the dielectric layer increases, the conventional structure has a problem of increasing the address driving voltage. In addition, since the thickness of the dielectric layer on the scan electrode 30 and the thickness of the dielectric layer on the address electrode 26 are different from each other, the discharge voltage actually applied to the discharge space 46 varies depending on the location, and thus there is a problem in that the discharge is unevenly generated.

Accordingly, an object of the present invention is to provide a high frequency plasma display panel capable of increasing the efficiency of sustain discharge while reducing the height of the partition wall and the frequency of the high frequency signal.

Another object of the present invention is to provide a high frequency plasma display panel in which mutual interference between address discharge and sustain discharge is minimized.

1 is a longitudinal sectional view of a panel showing a discharge cell structure of a conventionally developed high frequency plasma display panel.

FIG. 2 is a waveform diagram showing a driving waveform applied to each electrode of the discharge cell in order to drive the discharge cell shown in FIG.

3 is a longitudinal cross-sectional view of a panel showing a discharge cell structure of a high frequency plasma display panel according to a first embodiment of the present invention;

4A and 4B illustrate an overall panel longitudinal cross-sectional structure and a planar structure of the RF PDP according to the first embodiment of the present invention in which the discharge cells shown in FIG. 3 are arranged in a matrix form.

5 is a longitudinal cross-sectional view of a panel showing a discharge cell structure of a high frequency plasma display panel according to a second embodiment of the present invention;

6A and 6B illustrate overall panel longitudinal and planar structures of the RF PDP according to the second embodiment of the present invention, in which the discharge cells shown in FIG. 5 are arranged in a matrix form.

<Description of Symbols for Main Parts of Drawings>

20,60: Lower plate 22,62: Upper plate

24,64: lower substrate 26,66: address electrode

28,68: first dielectric layer 30,70: scan electrode

32,72: Second dielectric layer 34,74: Protective film

36,76 bulkhead 38,78 phosphor

40,80: upper substrate 42,82: high frequency electrode

44: upper dielectric layer 46,86: discharge space

84: high frequency base electrode 88: discharge cell

90: auxiliary electrode

In order to achieve the above object, the high-frequency plasma display panel of the present invention is formed on the lower substrate to be orthogonal to each other to cause an address discharge, the partition wall formed vertically on the lower substrate, the opposite partition wall And third and fourth electrodes formed therein to cause sustain discharge by the high frequency signal.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 3 to 6B.

3 is a longitudinal cross-sectional view of a panel showing a discharge cell structure of an RF PDP according to a first embodiment of the present invention. Referring to FIG. 3, the discharge cells of the RF PDP according to the first embodiment of the present invention are each formed of the high frequency electrode 82 and the high frequency base electrode 84 formed in the partitions 76 facing each other in the longitudinal direction of the discharge cell. ), A phosphor 78 coated on a side surface of the partition wall 76 and a predetermined region on the upper substrate 80, and an address electrode 66 and a scan electrode 70 formed in a direction orthogonal to each other on the lower substrate 64. ). The address electrode 66 to which data pulses are applied during address discharge is formed on the lower substrate 64 in the longitudinal direction of the discharge cell. On the lower substrate 64 on which the address electrode 66 is formed, a first dielectric layer 68 is formed on the entire surface to insulate the scan electrode 70 and the address electrode 66, and the scan pulse is applied upon the address discharge thereon. The electrode 70 is formed in the direction orthogonal to the address electrode 66. On the first dielectric layer 68 on which the scan electrodes 70 are formed, a second dielectric layer 72 for forming wall charges during discharge is formed on the entire surface. A partition wall 76 is formed on the second dielectric layer 72 to distinguish each discharge cell and to prevent electrical and optical interference between adjacent discharge cells. Inside the two partition walls 76 facing in the longitudinal direction of the discharge cell, a high frequency electrode 82 and a high frequency base electrode 84 for generating a high frequency sustain discharge are formed, respectively. On the inner wall of the partition wall 76 in contact with the discharge space 86, a phosphor 78 which is excited by ultraviolet rays generated during discharge and generates visible light is coated. On the second dielectric layer 72 exposed to the discharge space 86, a protective film 74 is formed to protect the dielectric layer 72 from sputtering during discharge. Phosphor 78 having a predetermined width around the center is coated on the rear surface of the upper substrate 80 disposed parallel to the lower substrate 64 with the partition 76 therebetween. Unlike the conventional structure, the electrode is not formed on the upper substrate 80.

The height of the partition wall 76 is preferably made relatively low to a degree similar to the width of the discharge cell. In the actual VGA level PDP, the length and width of the discharge cells are 1.2 mm and 0.4 mm, respectively, and in the case of the XGA level PDP, the size of the discharge cell is half smaller than that of the VGA level. Considering that the width of the discharge cell is 0.4 mm or half, the partition wall having such a height can be easily manufactured by a conventional partition wall manufacturing method. The high frequency electrode 82 and the high frequency base electrode 84 are formed at a middle height point of the partition wall 76. In order to form an electrode inside the partition wall 76, first, the partition wall is formed on the lower plate 60 on which the second dielectric layer 72 is formed by a height approximately half the height of the partition wall to be finally formed using a conventional partition wall manufacturing method. Let's do it. Then, the high frequency electrode 82 and the high frequency base electrode 84 are formed on the partition walls facing each other. As the electrode forming method, a sputtering method, a screen printing method, or the like can be used. The barrier rib 76 is formed on the intermediate height barrier rib on which the high frequency electrode 82 and the high frequency base electrode 84 are formed by screen printing or the like to have a final height.

4A and 4B illustrate an overall panel longitudinal cross-sectional structure and a planar structure of the RF PDP according to the first embodiment of the present invention in which the discharge cells shown in FIG. 3 are arranged in a matrix form. 4A and 4B, discharge cells 88 are positioned at the intersections of the address electrode 66 and the scan electrode 70, and adjacent discharge cells 88 are disposed on the partition wall 76 disposed therebetween. Are distinguished by. The high frequency electrode 82 line and the high frequency base electrode 84 line are alternately formed for each of the partition wall 76 lines formed in parallel in the width direction of the discharge cell 88. That is, the high frequency electrode 82 line and the high frequency base electrode 84 line are alternately formed in units of scan lines. The high frequency electrode 82 formed on one of the barrier ribs is shared by two adjacent discharge cells with the barrier ribs interposed therebetween. In addition, the high frequency base electrode 84 formed on the opposing barrier rib is shared by two adjacent discharge cells with the barrier rib interposed therebetween.

The RF PDP according to the first embodiment of the present invention has a four-electrode structure in which address discharge occurs between the address electrode 66 and the scan electrode 70 and high frequency sustain discharge occurs between the high frequency electrode 82 and the high frequency base electrode 84. Has In order to drive the RF PDP according to the present invention, driving signals as shown in FIG. 2 are applied to each of the high frequency electrode 82, the address electrode 66, and the scan electrode 70. The ground level signal of the high frequency signal applied to the high frequency electrode 82 is continuously applied to the high frequency base electrode 84. First, as shown in FIG. 2, in a section in which data pulses are supplied to the address electrode 66 and scan pulses are supplied to the scan electrode 70, an address for cell selection between the address electrode 66 and the scan electrode 70 is provided. Discharge occurs. In this process, charged particles such as electrons are generated in the discharge space 86 of the selected discharge cell, and wall charges are accumulated in the second dielectric layer 72. Accumulated wall charges lower the discharge voltage during sustain discharge. In section b where the address discharge is completed, relatively high mobility electrons among the charged particles generated in the discharge space 86 are induced by a high frequency signal supplied to the high frequency electrode 82 to continuously generate sustain discharge. At this time, sustain discharge occurs between the high frequency electrode 82 and the high frequency base electrode 84 that face in the longitudinal direction of the discharge cell. The high frequency signal with alternating polarity generates an electric field whose direction alternates in the longitudinal direction of the discharge cell in the discharge space 86. Accordingly, the electrons in the discharge space 86 are vibrated in the longitudinal direction of the discharge cell by the electric field, unlike in the conventional structure. The vibrating electrons excite the discharge gas charged in the discharge space 86 continuously and cause discharge. The ultraviolet light generated in the discharge space 86 during discharge excites the phosphor 78 coated on the inner wall of the partition 76 and a part of the upper substrate 62 to generate visible light, thereby realizing an image of the PDP. Lose. In order to stop the sustain discharge, an erase pulse must be supplied to the address electrode 66 or the scan electrode 70 as in the section c of FIG. 2. The erase pulse applies an attraction force to the electrons so that the electrons in the discharge space 86 can no longer vibrate and are attracted to the lower plate. As a result, the electrons disappear in the discharge space 86 to stop the sustain discharge.

As described above, in the RF PDP according to the first embodiment of the present invention, the electrons in the discharge space 86 are vibrated for a long time between the high frequency electrode 82 and the high frequency base electrode 84 that face in the longitudinal direction of the discharge cell. And sustain discharge. Although adjacent discharge cells share each of the high frequency electrode 82 and the high frequency base electrode 84, this does not cause mutual interference between adjacent discharge cells. This is because even in the conventional case, in the ADS driving system, a high frequency signal is always supplied to the high frequency electrodes of all the discharge cells, and even when the high frequency signal is supplied, sustain discharge occurs only in the discharge cells selected by the address discharge. In the present invention, the distance between the high frequency electrode 82 and the high frequency base electrode 84 causing sustain discharge is determined by the size of the discharge cell, not the height of the partition wall 76. In the RF PDP at the VGA level, the discharge cell has a length of 1.2 mm, and at the XGA level, the cell size is reduced to about half the VGA level. In the case of the VGA level, as the vibration width of the electrons vibrating between the high frequency electrode 82 and the high frequency base electrode 84 is sufficiently long at a level of 1.0 mm, the high frequency supplied to the high frequency electrode 82 to vibrate the electrons. The frequency of the signal can be lowered to about 40 MHz. In the case of the XGA level, the discharge cell size is reduced to half the size, so that the high frequency signal frequency at this time is about 80 MHz. In addition, since the plasma is formed in the longitudinal direction of the discharge cell during sustain discharge, the vacuum ultraviolet rays generated at this time can effectively reach the phosphor 78 coated on the partition wall 76, thereby further improving the discharge efficiency. On the other hand, in the present invention, as the electrons in the discharge space 86 vibrate in the longitudinal direction of the discharge cell, it is not necessary to increase the height of the partition 76. In the present invention, the height of the partition wall 76 is formed to have a length similar to the width of the discharge cell (0.4 mm in the case of VGA level). Height that can be manufactured. By lowering the height of the partition wall 76, the cell depth becomes shallower, and the phosphor 78 may be uniformly applied to the inner wall of the partition wall 76, and the transmittance of visible light generated from the phosphor 78 is increased, thereby improving luminous efficiency. do. In addition, in the present invention, instead of disposing the electrode on the upper substrate 80, the phosphor 78 is coated to improve the phosphor coating area and the luminous efficiency in the discharge cell. When the phosphor 78 is coated on the upper substrate 80, the visible light generated from the phosphor 78 coated on the side surface of the partition 76 may be transmitted to a predetermined width in the center portion of the upper substrate 80 so that the visible light may be transmitted without interference. It is preferable to apply | coat or apply | coat with a light transmissive type. In addition, in the present invention, the address discharge is easily generated between the address electrode 66 and the scan electrode 70, and the sustain discharge is independently between the high frequency electrode 82 and the high frequency base electrode 84. It is possible to drive and minimize the electrical interference that can occur between the two discharges.

5 is a longitudinal cross-sectional view of a panel showing a discharge cell structure of an RF PDP according to a second embodiment of the present invention. Referring to FIG. 5, the discharge cells of the RF PDP according to the second embodiment of the present invention are the high frequency electrode 82 and the high frequency base electrode 84 formed in the partition walls 76 facing each other in the longitudinal direction of the discharge cell. ), A phosphor 78 coated on a side surface of the partition wall 76 and a predetermined region on the upper substrate 80, and an address electrode 66 and a scan electrode 70 formed in a direction orthogonal to each other on the lower substrate 64. ) And the auxiliary electrode 90 formed to be electrically connected to the address electrode 66 in the vicinity of the region where the scan electrode 70 and the address electrode 66 cross each other and formed at the same height as the scan electrode 70. Equipped. In the discharge cell structure of the RF PDP according to the second embodiment of the present invention, all other components and features except for the formation of the auxiliary electrode 90 are formed on the address electrode 66 near the scan electrode 70. The same as in the case of the discharge cell structure according to the first embodiment of the present invention. The auxiliary electrode 90 is formed by forming an address electrode 66 on the lower substrate 64 and then stacking electrode materials up to the height of the scan electrode 70 through several printing processes on the address electrode 66. Can be formed. Alternatively, the address electrode 66 is formed, and then the first dielectric layer 68 is formed on the entire surface, and a portion of the first dielectric layer 68 on which the auxiliary electrode 90 is to be formed is etched and removed to fill the electrode material. You can also use 6A and 6B illustrate an overall panel longitudinal cross-sectional structure and a planar structure of an RF PDP according to a second embodiment of the present invention. As illustrated in FIGS. 6A and 6B, auxiliary electrodes 90 are formed in the vicinity of a point where the address electrode 66 and the scan electrode 70 cross each discharge cell 88. Adjacent discharge cells 88 are distinguished by partition walls 76 disposed therebetween. The high frequency electrode 82 line and the high frequency base electrode 84 line are alternately formed for each of the partition 76 lines formed in the width direction of the discharge cell 88.

In the RF PDP according to the second embodiment of the present invention, the data pulse applied to the address electrode 66 during the address discharge is equally applied to the auxiliary electrode 90. On the auxiliary electrode 90, since the thickness of the dielectric layer is relatively thin compared with the conventional case, the voltage drop in the dielectric layer during address discharge is small. Accordingly, most of the driving voltage supplied to the auxiliary electrode 90 is applied to the discharge space 86. On the other hand, on the address electrode 66 where the auxiliary electrode 90 is not formed, since the dielectric layer thickness is thick as in the conventional case, the discharge voltage applied to the actual discharge space 86 is very low due to the large voltage drop in the dielectric layer. Thus, address discharge is generated between the auxiliary electrode 90 and the scan electrode 70 connected to the address electrode 66. In the RF PDP according to the second embodiment of the present invention, since the voltage drop in the dielectric layer during the address discharge is greatly reduced, the address driving voltage required for the discharge can be significantly lowered than in the conventional case. In addition, since the address discharge field is intensively formed only in the region between the auxiliary electrode 90 and the scan electrode 70, crosstalk between adjacent discharge cells is prevented and discharge uniformity is improved.

The mechanism of sustain discharge subsequent to such an address discharge is the same as in the case of the first embodiment of the present invention. The sustain discharge is generated between the high frequency electrode 82 and the high frequency base electrode 84 formed inside the partition walls 76 facing each other in the longitudinal direction of the discharge cell. That is, the electrons in the discharge space 86 continuously generate a sustain discharge while vibrating in the longitudinal direction of the discharge cell by a high frequency signal. Accordingly, the height of the partition wall 76 can be lowered, and the frequency of the high frequency signal causing sustain discharge can be lowered. By lowering the partition wall 76, the transmittance of visible light is improved, and the luminous efficiency is improved by applying the phosphor 78 on the upper substrate 80. In addition, since the address discharge and the high frequency sustain discharge independently occur between different electrode pairs, mutual interference between the two discharges can be minimized.

As described above, in the high-frequency plasma display panel according to the present invention, the high-frequency electrode causing the high-frequency sustain discharge and the high-frequency base electrode are formed in the partition walls arranged to face the discharge cell in the longitudinal direction, so that the sustain discharge is in the longitudinal direction of the discharge cell. Let it happen Accordingly, the frequency of the high frequency signal for generating sustain discharge can be lowered, and the height of the partition wall can be lowered, thereby facilitating panel production. In addition, it is possible to increase the transmittance of visible light generated in the phosphor by lowering the partition wall, and the luminous efficiency can be greatly improved by applying the phosphor to the upper substrate as well as the side surface of the partition wall.

In addition, the high frequency plasma display panel according to the present invention has a four-electrode structure in which the address discharge and the high frequency sustain discharge are independently generated, thereby facilitating driving and minimizing electrical mutual interference between the two discharges.

In addition, in the high frequency plasma display panel according to the present invention, the auxiliary electrode is formed on the address electrode at the same height as the scan electrode, thereby lowering the driving voltage during address discharge and improving the discharge uniformity.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (7)

First and second electrodes formed on the lower substrate so as to be perpendicular to each other to cause an address discharge; A partition wall formed vertically on the lower substrate; And third and fourth electrodes formed in the opposing barrier ribs and causing sustain discharge by high frequency signals. The method of claim 1, The barrier rib is formed in a grid form high frequency plasma display panel. The method of claim 2, And the third and fourth electrodes are formed in two partition walls having a large distance from each other among the four portions of the grid-shaped partition walls. The method of claim 1, And the third and fourth electrodes are alternately arranged in units of scan lines for each of the partition lines. The method of claim 1, And a phosphor formed at a predetermined width at a side of the partition and a central portion of the upper substrate. The method of claim 1, A first dielectric layer formed between the first and second electrodes, A second dielectric layer formed on the second electrode and the first dielectric layer, And a protective film formed on the second dielectric layer. The method of claim 1, And an auxiliary electrode formed on the first electrode to be coplanar with the second electrode.