KR100552012B1 - Plasma display panel having igniter electrodes - Google Patents

Abstract

A plasma display panel according to the present invention includes: a first substrate and a second substrate disposed to face each other; Address electrodes formed on the second substrate; Barrier ribs disposed in a space between the first substrate and the second substrate to partition a plurality of discharge cells; A phosphor layer formed in each of the discharge cells; Discharge sustain electrodes formed on the first substrate; And an ignition electrode extending along the partition wall from the discharge sustaining electrodes to the partition wall, and protruding from the discharging end toward the inside of the discharge cell, wherein the resistance value of at least a portion of the ignition electrode passing over the partition wall is increased. It is formed higher than the resistance value of the portion protruding toward the discharge cell.

Plasma display panel, ignition electrode, power consumption, discharge current

Description

Plasma display panel with ignition electrode {PLASMA DISPLAY PANEL HAVING IGNITER ELECTRODES}

1 is a partial plan view showing a plasma display panel according to a first embodiment of the present invention.

2 is a partial plan view showing a plasma display panel according to a second embodiment of the present invention.

3 is a partial plan view of a plasma display panel according to a third exemplary embodiment of the present invention.

4 is a partial plan view showing a plasma display panel according to a fourth embodiment of the present invention.

5 is a partial plan view showing a plasma display panel according to a fifth embodiment of the present invention.

6 is a partial plan view of a plasma display panel according to a sixth embodiment of the present invention.

7 is a partial plan view illustrating a plasma display panel according to a seventh embodiment of the present invention.

8 is a partial cutaway perspective view of a conventional plasma display panel.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a surface discharge plasma having an electrode structure in which a pair of discharge sustaining electrodes are disposed on one substrate so as to correspond to each discharge cell between both substrates to cause display discharge. It relates to a display panel.

In general, a plasma display panel (PDP) is a red (R), green (G), blue (VUV) generated by exciting the phosphor by a vacuum ultraviolet (VUV) emitted from the plasma obtained through gas discharge. A display device for implementing a predetermined image using the visible light of B). The plasma display panel can realize an ultra-large screen of 60 inches or more with a thickness of only 10 cm or less, and is a self-luminous display device such as a CRT, which has no characteristic of distortion due to color reproduction and viewing angle, and also has a manufacturing method compared to LCD. Its simplicity makes it a popular TV and industrial flat panel display, which has strengths in terms of productivity and cost.

Referring to FIG. 8, in the conventional AC plasma display panel structure, an address electrode 112 is formed on a rear substrate 110 in one direction (the x-axis direction of the drawing) and covers the address electrode 112 on the rear surface. The dielectric layer 113 is formed on the entire surface of the substrate 110. A plurality of stripe-shaped partition walls 115 are formed on the dielectric layer 113 so as to be disposed between the address electrodes 112, and red (R), green (G), and blue (blue) layers are formed between the partition walls 115. B) A phosphor layer 117 of color is formed.

In addition, a pair of transparent electrodes 102a and 103a and a bus electrode 102b are disposed on one surface of the front substrate 100 opposite to the rear substrate 110 in a direction crossing the address electrode 112 (y-axis direction in the drawing). Discharge sustaining electrodes 102 and 103 formed of an electrical field 103b, and covering the discharge sustaining electrodes 102 and 103, the dielectric layer 106 and the MgO passivation layer 108 sequentially on the entire front substrate 100. Is formed.

The point where the address electrode 112 on the rear substrate 110 and the pair of discharge sustaining electrodes 102 and 103 on the front substrate 100 cross each other constitutes a discharge cell.

In the plasma display panel configured as described above, millions of unit discharge cells are arranged in a matrix form. In order to simultaneously drive the discharge cells of the AC plasma display panel arranged in a matrix form, driving using the memory characteristic is performed.

In more detail, in order to cause a discharge between the X electrode (display electrode) 102 and the Y electrode (scanning electrode) 103 constituting the pair of discharge sustaining electrodes 102 and 103, a potential difference of a specific voltage or more is required. The voltage at this boundary is called a firing voltage (Vf). At this time, when the address voltage Va is applied between the Y electrode 103 and the address electrode 112, the discharge starts to form a plasma in the discharge cell, and the electrons and ions in the plasma move toward the electrode having the opposite polarity. Current flows.

On the other hand, each electrode of the AC plasma display panel is coated with dielectric layers 106 and 113, so that most of the transferred space charges are stacked on the dielectric layer having the opposite polarity, and thus, between the Y electrode 103 and the address electrode 112, respectively. The net space potential is smaller than the originally applied address voltage Va so that the discharge is weakened and the address discharge is extinguished. At this time, a relatively small amount of electrons are accumulated on the X electrode 102, and a relatively large amount of ions are accumulated on the Y electrode 103, and the dielectric layer covering the X and Y electrodes 102 and 103 ( The charges accumulated on the substrate 106 are called wall charges (Qw), and the space voltages formed between the XY electrodes 102 and 103 by these wall charges are called wall voltages (Vw).

Subsequently, when a constant voltage (Vs: discharge holding voltage) is applied between the X electrode 102 and the Y electrode 103, the sum of the magnitudes of the discharge holding voltage Vs and the wall voltage Vw (Vs + When Vw) is higher than the discharge start voltage Vf, discharge occurs in the discharge cell, and the vacuum ultraviolet rays generated at this time excite the phosphor to emit visible light through the transparent front substrate.

However, when there is no address discharge between the Y electrode 103 and the address electrode 102 (that is, when the address voltage Va is not applied), there is no wall charge accumulated between the XY electrodes 102 and 103, resulting in XY. The wall voltage between the electrodes 102 and 103 also does not exist. At this time, only the discharge holding voltage Vs applied between the XY electrodes 102 and 103 is formed in the discharge cell, which is lower than the discharge start voltage Vf, so that the gas space between the XY electrodes 102 and 103 is not discharged. Do not.

 The plasma display panel driven in this way goes through several steps from the input power to the final visible light. As a result, the energy conversion efficiency in each process is not good. The ratio of luminance) is lower than that of CRT. This causes excessive power consumption and additionally has a problem of heat generation.

In particular, in the case of a plasma display panel having an HD-level high-resolution area of 40 inches or more, solving the excessive power consumption problem is an important problem, and in order to improve this, an attempt to lower the discharge voltage by improving the electrode structure is performed. There was. As part of such an attempt, Japanese Patent Laid-Open No. 2002-008549 discloses a plasma display panel in which a transparent electrode of the discharge holding electrode is a mesh type having a plurality of openings, and Japanese Patent Laid-Open No. 2001-243883 discharges. Disclosed is a plasma display panel in which a bus electrode of a sustain electrode corresponds to a pair of discharge cells, and a transparent electrode is formed to protrude in and out of the bus electrode. However, even in these technologies, the discharge voltage is not sufficiently reduced, and therefore, the problem of excessive power consumption remains an unsolved problem.

The present invention was devised to solve the above problems, and an object thereof is to apply a separate auxiliary electrode to the discharge cell so that the plasma discharge can be generated smoothly even at a lower discharge voltage. The present invention provides a plasma display panel that enables stable driving.

In order to achieve the above object, a plasma display panel according to the present invention comprises: a first substrate and a second substrate facing each other; Address electrodes formed on the second substrate; Barrier ribs disposed in a space between the first substrate and the second substrate to partition a plurality of discharge cells; A phosphor layer formed in each of the discharge cells; Discharge sustain electrodes formed on the first substrate; And an ignition electrode extending along the partition wall from the discharge sustaining electrodes to the partition wall, and protruding from the discharging end toward the inside of the discharge cell, wherein the resistance value of at least a portion of the ignition electrode passing over the partition wall is increased. It is formed higher than the resistance value of the portion protruding toward the discharge cell.

The ignition electrodes extend from the discharge sustaining electrodes and are branched toward the inside of a pair of adjacent discharge cells in the discharge sustaining electrode direction, each protruding from the discharge sustaining electrodes. It may be formed to correspond.

The discharge sustain electrodes may extend in a direction crossing the direction of the address electrode on the first substrate, and a pair of bus electrodes may be formed to correspond to the discharge cells, respectively, and extend from the bus electrodes into the respective discharge cells. The pair may be formed of protruding electrodes formed to face each other.

In this case, the ignition electrode may include an ignition electrode extending from the bus electrode along the partition wall parallel to the address electrode direction and protruding toward the inside of the discharge cell at an end thereof.

The ignition electrode may include an extension part extending from the bus electrode along a partition wall parallel to the address electrode direction; And a protrusion protruding from the end of the extension toward the inside of the discharge cell, wherein the extension has a larger resistance value than the protrusion and is longer in the direction of the address electrode than the protrusion electrode. Extending toward the side, the protrusion may be positioned between a pair of protruding electrodes facing each other.

The ignition electrode may be formed to extend from at least one bus electrode of a pair of opposing bus electrodes, or may be formed to alternately correspond to neighboring partition walls in the bus electrode direction.

In addition, the protruding electrode may be selectively formed of a transparent electrode or a metal electrode, and may be formed to have at least one opening in the center of the protruding electrode.

The extension part may be formed of an indium tin oxide (ITO) electrode, the protrusion part may be made of a metal electrode, and the extension part may be formed with a cutout part.

Hereinafter, various embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a partial plan view showing a plasma display panel according to a first embodiment of the present invention.

In the plasma display panel according to the present exemplary embodiment, a first substrate (not shown) and a second substrate (not shown) are basically arranged to face each other at a predetermined interval, and a plurality of plasma display panels are disposed so as to cause plasma discharge in the spaces between the two substrates. Discharge cells 23R, 23G, and 23B are partitioned off by partition walls 17. On the first substrate, a plurality of discharge sustaining electrodes 12 and 13 are formed along one direction (x-axis direction of the drawing) of the substrate, and a direction intersecting with the discharge sustaining electrodes 12 and 13 on the second substrate. A plurality of address electrodes 21 are formed along the (y-axis direction in the drawing).

The barrier ribs 17 are disposed between the address electrodes 21 adjacent to each other, and are formed along a direction parallel to the address electrodes 21. In the present embodiment, the stripe-type partition wall is described as an example, but the present invention is not limited thereto, and the partition member parallel to the address electrode 21 and the partition member intersecting the address electrode 21 are formed together to discharge. The present invention can also be applied to a closed bulkhead structure that partitions cells 23R, 23G, and 23B.

The discharge sustaining electrodes 12 and 13 consist of the protruding electrodes 12a and 13a and the bus electrodes 12b and 13b. The protruding electrodes 12a and 13a serve to cause plasma discharge in the discharge cells 23R, 23G, and 23B. It is preferable to use an indium tin oxide (ITO) electrode, which is a transparent electrode, to secure luminance. The electrodes 12b and 13b are used to compensate for the high resistance of the transparent electrode and to secure electrical conduction. Preferably, metal electrodes are used.

The discharge sustaining electrodes 12 and 13 are formed in pairs so as to face each other so that the pair of bus electrodes 12b and 13b corresponding to each of the discharge cells 23R, 23G, and 23B are linear to each other. Protruding electrodes 12a and 13a are formed side by side and protrude from the respective bus electrodes 12b and 13b into the discharge cells 23R, 23G and 23B, respectively, so that the pairs face each other.

Meanwhile, ignition electrodes 34 and 35 are connected to the bus electrodes 12b and 13b. The ignition electrodes 34 and 35 extend from the bus electrodes 12b and 13b, respectively, and protrude toward the discharge cells 23R, 23G and 23B. The ignition electrodes 34 and 35 extend from the bus electrodes 12b and 13b to the partition 17 parallel to the address electrode 21 and the extension portions 34a and 35a extending along the partition 17. And protrusions 34b and 35b protruding from the ends of the extension parts 34a and 35a toward the inside of the discharge cells 23R, 23G and 23B. At this time, the extension parts 34a and 35a extend toward the center of the discharge cells 23R, 23G, and 23B longer in the direction of the address electrode 21 than the protruding electrodes 12a and 13a, and the protrusions 34b and 35b. Is positioned between the pair of protruding electrodes 12a and 13a facing each other.

In particular, the extension parts 34a and 35a are disposed on the partition wall 17 to limit the discharge current to extend the life of the electrodes, and the protrusions 34b and 35b extend the bus electrodes at the ends of the extension parts 34a and 35a. Branches protrude toward the inside of a pair of adjacent discharge cells 23R, 23G, and 23B in the direction of 12b and 13b, respectively, and serve as igniters.

At this time, the resistance values of the extension parts 34a and 35a are larger than the resistance values of the protrusions 34b and 35b. Until the discharge is started in the discharge cells 23R, 23G, 23B, the ignition electrodes 34 and 35 or the ignition electrodes 34 and 35 and the discharge sustaining electrodes 12 and 13 facing each other have their respective resistance values. Although the voltage is applied between both ends without much dependence, once the discharge is started, the discharge current flowing along the ignition electrodes 34 and 35 due to the high resistance of the extension portions 34a and 35a of the ignition electrode as described above. The flow can be rapidly restricted. In general, power consumption may be expressed as a product of voltage and current. When the discharge current is limited as in the present embodiment, power consumption may also be reduced, and the efficiency of the panel may be improved.

The extension portions 34a and 35a may have a resistance value greater than that of the protrusions 34b and 35b, or the resistance values of the entirety of the extension portions 34a and 35a may be larger than the protrusions 34b and 35b. Can be.

Although the extensions 34a and 35a and the protrusions 34b and 35b are shown to be perpendicular to each other in the present embodiment, the present invention is not limited thereto, and the extensions 34a and 35a and the protrusions 34b and 35b are not limited thereto. The protrusions 34b and 35b may be formed to have an obtuse angle greater than 90 °, and the protrusions 34b and 35b may be formed to have an acute angle smaller than 90 ° within a limit capable of maintaining a constant distance from the protrusion electrodes 12a and 13a.

In addition, the ignition electrodes 34 and 35 extend from each of the pair of opposing bus electrodes 12b and 13b, and the pair of discharge cells 23R, 23G and 23B neighboring the bus electrodes 12b and 13b. A pair of ignition electrodes 34 and 35 are disposed to face each other.

The protruding portions 34b and 35b of the ignition electrode may be made of a highly conductive metal electrode, and may be made of the same material as the electrode material forming the bus electrodes 12b and 13b. The extension parts 34a and 35a of the ignition electrode may be made of an ITO electrode having a higher resistance value than the metal electrode.

The main discharge gaps of the discharge sustain electrodes 12 and 13 are directed by directing the protrusions 34b and 35b of the ignition electrodes 34 and 35 thus formed toward the discharging region between the discharge sustain electrodes 12 and 13. the discharge gap can be formed shorter than the gap), and thus the discharge start voltage Vf between the pair of opposing discharge sustain electrodes 12 and 13 (i.e., between the scan electrode and the sustain electrode) can be lowered, As a result, stability of sustain discharge can be attained. That is, the space charge formed by the discharge between the ignition electrodes 34 and 35 is used at the start of discharge in the discharging region having a relatively long gap, thereby enabling low voltage driving. In addition, by forming the discharge gap longer than the length of the discharge path can contribute to the improvement of the discharge efficiency.

Hereinafter, the plasma display panel according to the second to fourth embodiments of the present invention will be described.

Plasma display panels according to the second to fourth embodiments of the present invention have the same basic structure as the plasma display panel and the partition structure, the address electrode and the discharge sustain electrode structure of the first embodiment described above, and the arrangement of the ignition electrodes. Embodiments with different structures are shown. In each embodiment, the same components use the same reference numerals.

2 is a partial plan view showing a plasma display panel according to a second embodiment of the present invention.

2, in this embodiment, the ignition electrode 38 extends from one bus electrode 13b selected from a pair of opposing bus electrodes 12b and 13b, and discharge cells 23R and 23G, respectively. 23B) protrudes toward the inside. That is, the ignition electrode 38 extends from the bus electrode 13b to the partition 17 parallel to the address electrode 21 and extends along the portion 38a and the discharge cell from the end of the extension 38a. And projections 38b branched toward the inside of 23R, 23G, and 23B to protrude, respectively. The bus electrode 13b to which the ignition electrode 38 is connected may be a scan electrode or a sustain electrode.

Here, the resistance value of the extension portion 38a is larger than the resistance value of the protrusion portion 38b. The protruding portion 38b of the ignition electrode may be made of a highly conductive metal electrode, and may be made of the same material as the electrode material forming the bus electrodes 12b and 13b. The extension 38a of the ignition electrode may be made of an ITO electrode having a higher resistance value than the metal electrode.

3 is a partial plan view of a plasma display panel according to a third exemplary embodiment of the present invention.

Referring to FIG. 3, in this embodiment, the ignition electrodes 44 and 45 are alternately connected to a pair of opposing bus electrodes 12b and 13b. In other words, the ignition electrodes 44 and 45 are not arranged correspondingly to each partition wall forming each of the discharge cells 23R, 23G, and 23B, but are arranged one by one, and are connected to opposite bus electrodes 12b and 13b, respectively. The ignition electrodes 44 and 45 are arranged so as not to face each other. The ignition electrodes 44 and 45 extend from the respective bus electrodes 12b and 13b along the partition 17 parallel to the address electrode 21 along the extension portions 44a and 45a and the extension portions 44a. And protrusions 44b and 45b branched from the end of 45a toward the inside of the discharge cells 23R, 23G and 23B to protrude, respectively.

Here, the resistance values of the extension portions 44a and 45a are larger than the resistance values of the protrusions 44b and 45b. The protrusions 44b and 45b of the ignition electrode may be made of a metal electrode having good conductivity, and may be made of the same material as the electrode material forming the bus electrodes 12b and 13b. The extensions 44a and 45a of the ignition electrode may be made of an ITO electrode having a higher resistance value than that of the metal electrode.

4 is a partial plan view showing a plasma display panel according to a fourth embodiment of the present invention.

Referring to Fig. 4, in this embodiment, the ignition electrodes 48 and 49 are connected to the pair of opposing bus electrodes 12b and 13b alternately as in the second embodiment. ) Are not arranged corresponding to each partition wall forming the discharge cells 23R, 23G, and 23B, but are arranged one by one. However, as shown in FIG. 4, the ignition electrodes 48 and 49 of the present embodiment are connected to the bus electrodes 12b and 13b in pairs so as to face each other. The ignition electrodes 48 and 49 are extended portions 48a and 49a extending from the bus electrodes 12b and 13b along the partition 17 parallel to the address electrode 21 and the extended portions 48a. And projections 48b and 49b branched from the ends of the terminal 49a toward the inside of the discharge cells 23R, 23G, and 23B, respectively, and protruding.

Here, the resistance values of the extension portions 48a and 49a are larger than the resistance values of the protrusion portions 48b and 49b. The protruding portions 48b and 49b of the ignition electrode may be made of a metal electrode having good conductivity, and may be made of the same material as the electrode material forming the bus electrodes 12b and 13b. The extension portions 48a and 49a of the ignition electrode may be made of an ITO electrode having a higher resistance value than the metal electrode.

5 is a partial plan view showing a plasma display panel according to a fifth embodiment of the present invention.

Referring to FIG. 5, in this embodiment, the discharge sustaining electrodes 35 and 36 are formed of the protruding electrodes 35a and 36a and the bus electrodes 35b and 36b, and the pair of protruding electrodes 35a and 36a face each other. The tip end of the beam is cut diagonally and has a pentagon shape as a whole. The ignition electrodes 64 and 65 extend from the bus electrodes 35b and 36b, respectively, and protrude toward the discharge cells 23R, 23G and 23B, and are parallel to the address electrode direction from the bus electrodes 35b and 36b. Extension portions 64a and 65a extending along the partition 17 and protrusions 64b and 65b protruding from the ends of the extension portions 64a and 65a toward the inside of the discharge cells 23R, 23G and 23B. It is made, including. At this time, the extension portions 64a and 65a extend no longer in the direction of the partition wall 17 than the protrusion electrodes 35a and 36a, and the protrusion portions 64b and 65b are diagonal lines of the protrusion electrodes 35a and 36a. It protrudes toward the center of discharge cell 23R, 23G, 23B in the direction parallel to a part.

Although the ignition electrodes 64 and 65 of the present embodiment are formed to face each other in pairs for each partition 17 of each discharge cell 23R, 23G, 23B, the second to fourth embodiments are illustrated. It can be formed to have an arrangement as shown in.

In addition, the resistance values of the extension portions 64a and 65a are larger than the resistance values of the protrusion portions 64b and 65b. The protrusions 64b and 65b of the ignition electrode may be made of a metal electrode having good conductivity, and may be made of the same material as the electrode material forming the bus electrodes 35b and 36b. The extension portions 64a and 65a of the ignition electrode may be made of an ITO electrode having a higher resistance value than the metal electrode.

6 is a partial plan view of a plasma display panel according to a sixth embodiment of the present invention.

In the plasma display panel according to the present embodiment, a metal electrode is applied to the protruding electrodes 72a and 73a in place of the transparent electrode in the plasma display panel according to the first embodiment. At this time, the metal electrode is usually opaque to block the visible light generated in the discharge cells (23R, 23G, 23B) to the outside to reduce the aperture ratio of the display, so as to ensure the aperture ratio as shown in the projection electrode ( It is preferable to have at least one opening 71 in the middle of 72a, 73a.

Also in such a plasma display panel, the ignition electrodes 74 and 75 may apply not only the ignition electrode of the first embodiment but also the ignition electrode arrangement of the second to fourth embodiments, and the projection electrodes 72a and 73a. It is also possible to form the ignition electrode as in the fifth embodiment by modifying the shape.

7 is a partial plan view illustrating a plasma display panel according to a seventh embodiment of the present invention.

The plasma display panel according to the present embodiment has discharge sustaining electrodes 12 and 13 made of the protruding electrodes 12a and 13a and the bus electrodes 12b and 13b, like the plasma display panel according to the first embodiment. (17) It extends along this partition 17, and has the ignition electrodes 76 and 77 which protrude toward the inside of discharge cell 23R, 23G, 23B at the end.

The ignition electrodes 76 and 77 of this embodiment extend from the bus electrodes 12b and 13b to the partition 17 parallel to the address electrode 21 along the partitions 17a and 77a. And protrusions 76b and 77b protruding from the ends of the extension portions 76a and 77a toward the inside of the discharge cells 23R, 23G and 23B. In this case, the extension parts 76a and 77a may further include cutouts 78, so that the extension parts 76a and 77a may have a larger resistance value than the resistance values of the protrusions 76b and 77b. Can be limited. In this case, the extension parts 76a and 77a may be formed of the same material as the protrusion parts 76b and 77b.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the scope of the invention.

As described above, according to the plasma display panel according to the present invention, an ignition electrode is formed between a pair of opposing discharge sustaining electrodes (scanning electrode and sustaining electrode), thereby lowering the discharge start voltage Vf to secure stability of sustaining discharge. can do. In addition, the space charge formed by the discharge at the ignition electrode may be used for discharge in a discharge path having a relatively long gap, thereby contributing to the improvement of the discharge efficiency.                     

On the other hand, by passing the extension portion of the ignition electrode over the partition wall can limit the discharge current to extend the life of the ignition electrode, there is an effect to reduce the power consumption.

By forming the resistance value at the extension of the ignition electrode higher than the resistance value at the ignition electrode protrusion, it is possible to further limit the discharge current without losing the discharge voltage, thereby further improving the power consumption reduction effect.

Claims (13)

A first substrate and a second substrate disposed to face each other; Address electrodes formed on the second substrate; Barrier ribs disposed in a space between the first substrate and the second substrate to partition a plurality of discharge cells; Phosphor layers formed in the respective discharge cells; Discharge sustain electrodes formed on the first substrate; And An ignition electrode including an extension part extending along the partition wall from the discharge holding electrodes to the partition wall, and a protrusion projecting toward the inside of the discharge cell at the end of the extension part; Including; And a resistance value of the extension portion passing through at least the partition wall of the ignition electrode is higher than a resistance value of the protrusion portion protruding toward the discharge cell. The method of claim 1, And the ignition electrodes extend from the discharge sustain electrodes and branch toward the inside of a pair of neighboring discharge cells in the direction of the discharge sustain electrodes. The method of claim 1, And at least one ignition electrode corresponding to each of the discharge cells. The method of claim 1, The discharge sustaining electrodes, A bus electrode extending in a direction crossing the address electrode direction on the first substrate and having a pair corresponding to each of the discharge cells; Protruding electrodes extending from the bus electrodes into respective discharge cells, respectively, so that the pairs face each other Including, And the ignition electrode extends along the partition wall from the bus electrode to the partition wall, and includes an ignition electrode protruding toward the inside of the discharge cell at an end thereof. The method of claim 4, wherein And the ignition electrode extends along the partition wall from the bus electrode to a partition wall parallel to the address electrode direction, and includes an ignition electrode protruding toward the inside of the discharge cell at an end thereof. The method of claim 4, wherein The extension portion extends along the partition wall parallel to the address electrode direction from the bus electrode, has a greater resistance value than the protrusion portion, and extends toward the center of the discharge cell longer in the direction of the address electrode than the protrusion electrode, and the protrusion portion And a plasma display panel positioned between a pair of protruding electrodes facing each other. The method of claim 4, wherein And the ignition electrode extends from at least one bus electrode of a pair of opposing bus electrodes. The method of claim 4, wherein And the ignition electrode is formed to alternately correspond to adjacent partitions in the direction of the bus electrode. The method of claim 4, wherein And the protruding electrode comprises a transparent electrode. The method of claim 4, wherein And a protrusion electrode formed of a metal electrode. The method of claim 10, The protruding electrode is formed to have at least one opening in the center. The method according to any one of claims 1 to 11, The extension portion is made of indium tin oxide (ITO) electrode, and the protrusion is made of a metal electrode plasma display panel. The method according to any one of claims 1 to 11, The extension portion is formed with a cutout plasma display panel.

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