KR20100113895A - Plasma display panel device - Google Patents

Abstract

PURPOSE: A plasma display device is provided to improve color temperature and brightness by differently forming a first and a second discharge cell. CONSTITUTION: A first and a second partition wall(232,234) divide a first and a second electrode which are formed into a monolayer. Either the first electrode or the second electrode includes an electrode line and an extension electrode. The electrode line is formed into a direction crossing the first partition wall. The extension electrode is extended from the electrode line inside a first and a second discharge cell towards a second partition wall direction. The extension electrode comprises a first and a second extension electrode(206,207).

Description

Plasma display panel device

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly, to a plasma display device which is easy to prevent a color temperature drop of a discharge cell formed of a plasma display panel.

In general, a plasma display panel is a partition wall formed between an upper substrate and a lower substrate to form one unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays (Vacu μm Ultraviolet rays), and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because a thin and light configuration is possible.

In a typical plasma display panel, a scan electrode and a sustain electrode are formed on an upper substrate, and the scan electrode and the sustain electrode are laminated with a transparent electrode and a bus electrode made of expensive ITO (Indiμm Tin Oxide) to secure an aperture ratio of the panel. Has a structure.

Recently, the focus is on manufacturing a plasma display panel that can secure sufficient viewing characteristics, driving characteristics, and the like, while reducing manufacturing costs.

An object of the present invention is to provide a plasma display device which is easy to prevent the color temperature of the discharge cells formed in the plasma display panel.

A plasma display device according to a first embodiment of the present invention includes a first and a second partition formed in a single layer and first and second partition walls that partition discharge cells, and includes at least one of the first and second electrodes. One includes an electrode line formed in a direction crossing the first partition wall and an extension electrode extending from the electrode line toward the second partition wall in first and second discharge cells of the discharge cells, wherein the extension electrode includes: And first and second extension electrodes formed in the first and second discharge cells, respectively, having first and second extension lengths.

In addition, the plasma display device according to the second embodiment of the present invention includes first and second electrodes formed in a single layer, and first and second partition walls defining discharge cells, and the first and second electrodes. At least one of the first and second electrode lines formed in the direction crossing the first partition wall, the connecting electrode connecting the first and second electrode lines, and extending in the direction of the second partition wall from the first electrode line. And a connection electrode, wherein the connection electrode includes first and second connection electrodes formed in first and second widths in the first and second discharge cells, respectively.

The plasma display device of the present invention can reduce the manufacturing cost of the plasma display device by removing the transparent electrode, and by forming at least one of the first and second electrodes differently from the first and second discharge cells of the discharge cells, There is an advantage that can improve the color temperature and brightness of the display panel.

1 is a perspective view illustrating a structure of a plasma display panel according to a first embodiment of the present invention.

Referring to FIG. 1, the plasma display panel includes a scan electrode 11, a sustain electrode 12, a sustain electrode pair formed on the upper substrate 10, and an address electrode 22 formed on the lower substrate 20. It includes.

The sustain electrode pairs 11 and 12 generally include transparent electrodes 11a and 12a and bus electrodes 11b and 12b formed of indium tin oxide (ITO), and the bus electrodes 11b and 12b. ) May be formed of a metal such as silver (Ag), chromium (Cr) or a stack of chromium / copper / chromium (Cr / Cu / Cr) or a stack of chromium / aluminum / chromium (Cr / Al / Cr). The bus electrodes 11b and 12b are formed on the transparent electrodes 11a and 12a to serve to reduce voltage drop caused by the transparent electrodes 11a and 12a having high resistance.

Meanwhile, according to the first embodiment of the present invention, the sustain electrode pairs 11 and 12 have not only a structure in which the transparent electrodes 11a 12a and the bus electrodes 11b and 12b are stacked, but also without the transparent electrodes 11a and 12a. Only the bus electrodes 11b and 12b may be constituted. This structure does not use the transparent electrodes (11a, 12a), there is an advantage that can lower the cost of manufacturing the panel. The bus electrodes 11b and 12b used in this structure may be various materials such as photosensitive materials in addition to the materials listed above.

Light between the scan electrodes 11 and the sustain electrodes 12 between the transparent electrodes 11a and 12a and the bus electrodes 11b and 11c to absorb external light generated outside the upper substrate 10 to reduce reflection. A black matrix (BM, 15) is arranged that functions to block and to improve the purity and contrast of the upper substrate 10.

The black matrix 15 according to the first embodiment of the present invention is formed on the upper substrate 10. The first black matrix 15 and the transparent electrodes 11a and 12a are formed at positions overlapping the partition wall 21. ) And second black matrices 11c and 12c formed between the bus electrodes 11b and 12b. Here, the first black matrix 15 and the second black matrices 11c and 12c, also referred to as black layers or black electrode layers, may be simultaneously formed and physically connected in the formation process, and may not be simultaneously formed and thus not physically connected. .

In addition, when physically connected and formed, the first black matrix 15 and the second black matrix 11c and 12c may be formed of the same material, but may be formed of different materials when they are physically separated.

The upper dielectric layer 13 and the passivation layer 14 are stacked on the upper substrate 10 having the scan electrode 11 and the sustain electrode 12 side by side. Charged particles generated by the discharge are accumulated in the upper dielectric layer 13, and the protective electrode pairs 11 and 12 may be protected. The protective film 14 protects the upper dielectric layer 13 from sputtering of charged particles generated during gas discharge, and increases emission efficiency of secondary electrons.

In addition, magnesium oxide (MgO) may be generally used for the protective film 14, and Si-MgO to which silicon (Si) is added may be used.

Here, the content of silicon (Si) added to the protective film 14 may be 60PPM to 200PPM based on the weight percent.

On the other hand, the address electrode 22 is formed in the direction crossing the scan electrode 11 and the sustain electrode 12. In addition, the lower dielectric layer 23 and the partition wall 21 are formed on the lower substrate 20 on which the address electrode 22 is formed.

In addition, the phosphor layer 23 is formed on the surfaces of the lower dielectric layer 24 and the partition wall 21. The partition wall 21 has a vertical partition wall 21a and a horizontal partition wall 21b formed in a closed shape, and physically distinguishes discharge cells, and prevents ultraviolet rays and visible light generated by the discharge from leaking into adjacent discharge cells.

In the first embodiment of the present invention, not only the structure of the partition wall 21 illustrated in FIG. 1, but also the structure of the partition wall 21 having various shapes may be possible. For example, a channel in which a channel usable as an exhaust passage is formed in at least one of the differential partition structure, the vertical partition 21a, or the horizontal partition 21b having different heights of the vertical partition 21a and the horizontal partition 21b. A grooved partition structure having a groove formed in at least one of the type partition wall structure, the vertical partition wall 21a, or the horizontal partition wall 21b may be possible.

Here, in the case of the differential partition wall structure, the height of the horizontal partition wall 21b is more preferable, and in the case of the channel partition wall structure or the groove partition wall structure, it is preferable that a channel is formed or the groove is formed in the horizontal partition wall 21b. something to do.

Meanwhile, in the first embodiment of the present invention, although each of the R, G, and B discharge cells is shown and described as being arranged on the same line, it may be arranged in other shapes. For example, a Delta type arrangement in which R, G, and B discharge cells are arranged in a triangular shape may be possible. In addition, the shape of the discharge cell may be not only rectangular, but also various polygonal shapes such as a pentagon and a hexagon.

In addition, the phosphor layer 23 emits light by ultraviolet rays generated during gas discharge to generate visible light of any one of red (R), green (G), and blue (B). Here, an inert mixed gas such as He + Xe, Ne + Xe and He + Ne + Xe for discharging is injected into the discharge space provided between the upper / lower substrates 10 and 20 and the partition wall 21.

2 is a simplified diagram illustrating an electrode arrangement of a plasma display panel according to a first embodiment of the present invention.

Referring to FIG. 2, the plurality of discharge cells constituting the plasma display panel is preferably arranged in a matrix form as shown in FIG. 2. The plurality of discharge cells are provided at the intersections of the scan electrode lines Y1 to Ym, the sustain electrode lines Z1 to Zm, and the address electrode lines X1 to Xn, respectively. The scan electrode lines Y1 to Ym may be driven sequentially or simultaneously, and the sustain electrode lines Z1 to Zm may be driven simultaneously. The address electrode lines X1 to Xn may be driven by being divided into odd-numbered lines and even-numbered lines, or sequentially driven.

Since the electrode arrangement shown in FIG. 2 is only a first embodiment of the electrode arrangement of the plasma panel according to the present invention, the present invention is not limited to the electrode arrangement and driving method of the plasma display panel shown in FIG. 2. For example, a dual scan method in which two scan electrode lines among the scan electrode lines Y1 to Ym are simultaneously scanned is possible. In addition, the address electrode lines X1 to Xn may be driven by being divided up and down or left and right in the center portion of the panel.

3 is a timing diagram of a method of time-division driving by dividing one frame into a plurality of subfields according to the first embodiment of the present invention.

The unit frame may be divided into a predetermined number, for example, eight subfields SF1, ..., SF8 to realize time division gray scale display. Each subfield SF1, ... SF8 is divided into a reset section (not shown), an address section A1, ..., A8 and a sustain section S1, ..., S8.

Here, according to the first embodiment of the present invention, the reset period may be omitted in at least one of the plurality of subfields. For example, the reset period may exist only in the first subfield or may exist only in a subfield about halfway between the first subfield and all the subfields.

In each address section A1, ..., A8, a display data signal is applied to the address electrode X, and scan pulses corresponding to each scan electrode Y are sequentially applied.

In each of the sustain periods S1, ..., S8, a sustain pulse is alternately applied to the scan electrode Y and the sustain electrode Z to form wall charges in the address periods A1, ..., A8. Sustain discharge occurs in the discharge cells.

The luminance of the plasma display panel is proportional to the number of sustain discharge pulses in the sustain discharge sections S1, ..., S8 occupied in the unit frame. When one frame forming one image is represented by eight subfields and 256 gradations, each subfield in turn has different sustains at a ratio of 1, 2, 4, 8, 16, 32, 64, and 128. The number of pulses can be assigned. In order to obtain luminance of 133 gradations, cells may be sustained by addressing the cells during the subfield 1 section, the subfield 3 section, and the subfield 8 section.

The number of sustain discharges allocated to each subfield may be variably determined according to weights of the subfields according to the APC (Automatic Power Control) step. That is, in FIG. 3, a case in which one frame is divided into eight subfields has been described as an example. However, the present invention is not limited thereto, and the number of subfields forming one frame may be variously modified according to design specifications. . For example, a plasma display panel may be driven by dividing one frame into eight or more subfields, such as 12 or 16 subfields.

The number of sustain discharges allocated to each subfield can be variously modified in consideration of gamma characteristics and panel characteristics. For example, the gray level assigned to subfield 4 may be lowered from 8 to 6, and the gray level assigned to subfield 6 may be increased from 32 to 34.

4 is a timing diagram illustrating a driving signal for driving a plasma display panel according to a first embodiment of the present invention.

The subfield is a wall formed by a pre-reset section and a pre-reset section for forming positive wall charges on the scan electrodes Y and negative wall charges on the sustain electrodes Z. It may include a reset section for initializing the discharge cells of the entire screen by using the charge distribution, an address section for selecting the discharge cells, and a sustain section for maintaining the discharge of the selected discharge cells. have.

The reset section includes a setup section and a setdown section. In the setup section, rising ramp waveforms (Ramp-up) are simultaneously applied to all scan electrodes to generate fine discharges in all discharge cells. Thus, wall charges are generated. In the set-down period, a falling ramp waveform (Ramp-down) falling at a positive voltage lower than the peak voltage of the rising ramp waveform (Ramp-up) is simultaneously applied to all the scan electrodes (Y), thereby eliminating discharge discharge in all the discharge cells. Generated, thereby eliminating unnecessary charges during wall charges and space charges generated by the setup discharges.

In the address period, a scan signal having a negative scan voltage Vsc is sequentially applied to the scan electrode, and at the same time, a positive data signal is applied to the address electrode X. The address discharge is generated by the voltage difference between the scan signal and the data signal and the wall voltage generated during the reset period, thereby selecting the cell. On the other hand, in order to increase the efficiency of the address discharge, a sustain bias voltage Vzb is applied to the sustain electrode during the address period.

During the address period, the plurality of scan electrodes Y may be divided into two or more groups, and scan signals may be sequentially supplied to each group, and each of the divided groups may be further divided into two or more subgroups and sequentially by the subgroups. Scan signals can be supplied. For example, the plurality of scan electrodes Y is divided into a first group and a second group, and scan signals are sequentially supplied to scan electrodes belonging to the first group, and then scan electrodes belonging to the second group Scan signals may be supplied sequentially.

According to the first embodiment of the present invention, the plurality of scan electrodes Y is divided into a first group located at an even number and a second group located at an odd number according to a position formed on a panel. In another embodiment, the display panel may be divided into a first group located above and a second group located below the center of the panel.

The scan electrodes belonging to the first group divided by the above method are further divided into a first subgroup located at an even number and a second subgroup located at an odd number, or the first group. The first subgroup positioned above and the second group positioned below may be divided based on the center of the.

In the sustain period, a sustain pulse having a sustain voltage Vs is alternately applied to the scan electrode and the sustain electrode to generate sustain discharge in the form of surface discharge between the scan electrode and the sustain electrode.

The width of the first sustain signal or the last sustain signal among the plurality of sustain signals alternately supplied to the scan electrode and the sustain electrode in the sustain period may be greater than the width of the remaining sustain pulses.

After the sustain discharge is generated, an erase period for erasing the wall charge remaining in the scan electrode or the sustain electrode of the selected ON cell in the address period by generating a weak discharge may be further included after the sustain period.

The erase period may be included in all or some of the plurality of subfields, and the erase signal for the weak discharge is preferably applied to the electrode to which the last sustain pulse is not applied in the sustain period.

The cancellation signal is a ramp-type signal that gradually increases, a low-voltage wide pulse, a high-voltage narrow pulse, an exponential signal, or half Sinusoidal pulses can be used.

In addition, a plurality of pulses may be sequentially applied to the scan electrode or the sustain electrode to generate the weak discharge.

The driving waveforms shown in FIG. 4 are first examples of signals for driving the plasma display panel according to the present invention. The present invention is not limited to the waveforms shown in FIG. 4. For example, the pre-reset period may be omitted, and the polarity and the voltage level of the driving signals illustrated in FIG. 4 may be changed as necessary. After the sustain discharge is completed, an erase signal for erasing wall charge may be applied to the sustain electrode. May be authorized. In addition, the single sustain driving may be performed by applying the sustain signal to only one of the scan electrode (Y) and the sustain (Z) electrode to generate a sustain discharge.

The driving section of the plasma display panel may be divided into a power-on sequence section and a normal operation section. The waveforms of the driving signals supplied from the power-on sequence section and the normal operation section may be the same or different as necessary.

That is, when power is supplied to the plasma display device (Power ON), a power-on for preparing a normal operation of the device without displaying an image on the panel for a predetermined time or until the driving voltage to be supplied to the panel reaches a normal level. A power on sequence is performed. Thereafter, the image is displayed by the driving signals supplied to the panel in the normal operation section.

In addition, even before the power supply to the plasma display device is cut off, a power on sequence similar to the power on sequence exists to smoothly terminate the power supply to the driving circuit or the panel.

For example, during a predetermined time after power is supplied to the plasma display device, the data signal is not applied to the panel because the display enable signal has a value of "0" which is a low level. , No image is displayed on the panel. After the predetermined time has elapsed, if the disabling enable signal has a value of "1" which is a high level, the data signal is applied to the panel, and the image is displayed on the panel. In addition, during a predetermined time before the power supply to the plasma display device is terminated, the disabling enable signal again has a low level of "0", and thus no image is displayed on the panel.

5 is a cross-sectional view illustrating an electrode structure of a plasma display panel according to a first embodiment of the present invention.

5 illustrates an arrangement structure of the first electrode 100 and the second electrode 110 formed in the first, second, and third discharge cells R, G, and B, which are divided into the first and second partitions 132 and 134. Show only briefly.

Referring to FIG. 5, in the plasma display apparatus, first, second electrodes 100 and 110 are symmetrically formed in the same electrode structure in the first, second, and third discharge cells R, G, and B. Referring to FIG.

Here, the first electrode 100 has a direction in which the second electrode 110 is formed in the first and second electrode lines 101 and 102 and the second electrode line 102 in a direction crossing the first partition wall 132. First electrodes in the protruding electrodes 103, the connecting electrodes 104 connecting the first and second electrode lines 101 and 102, and the first, second and third discharge cells R, G, and B, respectively. The first, second, and third extension electrodes 105, 106, and 107 extend in the direction in which the second partition wall 134 is positioned in the line 101.

It is preferable that the first and second electrode lines 101 and 102 have a narrow width so as to always keep the aperture ratio. Preferably, the widths of the first and second electrode lines 101 and 102 are set to 20 µm or more and 70 µm or less to improve the aperture ratio and to facilitate the discharge.

In addition, the connection electrode 104 helps the discharge initiated through the protruding electrode 103 to diffuse from the second electrode line 102 to the first electrode line 101.

In the present embodiment, the connection electrode 104 is formed in the first, second, and third discharge cells R, G, and B, but may also be formed on the first partition wall 132 partitioning the discharge cells as necessary. It will be possible.

In this case, each of the first, second, and third extension electrodes 105, 106, and 107 is formed with first, second, and third extension lengths D1, D2, and D3.

Here, the second extension length D2 is preferably 1.2 times to 2 times the first extension length D1, and the third extension length D3 is preferably 1.2 times to 2 times the second extension length D2. Do. That is, since the color temperature in the second and third discharge cells (G, B) of the first, second, and third discharge cells (R, G, B) is formed low, the color temperature can be prevented from being lowered.

Each of the first, second, and third extension electrodes 105, 106, and 107 has first, second, and third widths P1, P2, and P3.

That is, the first width P1 is preferably 1.2 times to 2 times the second width P2, and the third second width P2 is preferably 1.2 times to 2 times the third width P3. That is, since the color temperature in the second and third discharge cells (G, B) of the first, second, and third discharge cells (R, G, B) is formed low, the color temperature can be prevented from being lowered.

In the present exemplary embodiment, the first extension electrode 105 is described as having a first extension length D1 and a first width P1, but the first extension electrode 105 may not be formed.

The second electrode 110 protrudes in the direction in which the first electrode 100 is formed from the first and second electrode lines 111 and 112 and the second electrode line 112 formed in the direction crossing the first partition wall 132. The first electrode line (not shown) in the protruding electrode 113, the connection electrode 114 connecting the first and second electrode lines 111 and 112, and the first, second and third discharge cells R, G, and B, respectively. The first, second, and third extension electrodes 115, 116, and 117 extend in the direction in which the second partition wall 134 is positioned at 111.

Here, since the second electrode 110 is formed symmetrically with the first electrode 100, description thereof will be omitted.

In addition, a black matrix (not shown) may be formed on the second partition 134.

6 is a cross-sectional view illustrating an electrode structure of a plasma display panel according to a second embodiment of the present invention.

Referring to FIG. 6, in the plasma display apparatus, first, second electrodes 200 and 210 are asymmetrically formed in different electrode structures in the first, second, and third discharge cells R, G, and B. Referring to FIG.

The black matrix BM is formed to partially overlap the second partition 234.

Here, the black matrix BM overlaps the second partition wall 234 adjacent to the first and second discharge cells R and G and is not formed in the second partition wall 234 adjacent to the third discharge cell B. Do not.

The first electrode 200 protrudes from the first and second electrode lines 201 and 202 formed in the direction crossing the first partition wall 232 and the second electrode line 202 in the direction in which the second electrode 210 is formed. The first electrode line in the protruding electrode 203, the connecting electrode 204 connecting the first and second electrode lines 201 and 202, and the first, second and third discharge cells R, G, and B, respectively. The first and second extension electrodes 206 and 207 extending in the direction in which the second partition wall 234 is positioned at 201 are included.

Here, the first extension electrode 206 is formed to be the same as the first extension length (D10) in the first, second discharge cells (R, G), the second extension electrode 207 is the third discharge cell (B) In the second extension length (D20) is formed.

The second extension length D20 is preferably 1.2 to 2 times the first extension length D10 and is formed to contact the second partition wall 234 in the first electrode line 201.

The second electrode 210 protrudes in the direction in which the first electrode 200 is formed from the first and second electrode lines 211 and 212 and the second electrode line 212 formed in the direction crossing the first partition wall 232. A first electrode extending in a direction in which the second electrode wall 234 is positioned in the first electrode line 211 and the connection electrode 214 connecting the protruded electrode 213, the first and second electrode lines 211 and 212. An extension electrode 216 is included.

Here, the first extension electrode 216 is formed in the first, second, and third discharge cells R, G, and B with the first extension length D10.

In the present embodiment, since the black matrix BM is not formed in the third discharge cell B, the color temperature is lowered by bringing the second extension electrode 207 of the first electrode 200 into contact with the second partition wall 234. Can be prevented.

7 is a cross-sectional view illustrating an electrode structure of a plasma display panel according to a third embodiment of the present invention.

Referring to FIG. 7, in the plasma display apparatus, first, second electrodes 300 and 310 are asymmetrically formed with different electrode structures in the first, second, and third discharge cells R, G, and B. Referring to FIG.

The black matrix BM is formed to overlap the second partition 334.

The first electrode 300 protrudes in the direction in which the second electrode 310 is formed in the first and second electrode lines 301 and 302 and the second electrode line 302 formed in the direction crossing the first partition wall 332. First and second connection electrodes 304 and 305 connecting the first and second electrode lines 301 and 302 to the protruding electrodes 303 and the first, second and third discharge cells R, G and B, respectively. The extension electrode 306 extends in the direction in which the second partition wall 334 is positioned in the first electrode line 301.

Here, the first connection electrode 304 has a first width P10, similar to the protruding electrode 306, and the second connection electrode 305 has a second width P20 thicker than the first width P10. Formed.

That is, the second width P20 is preferably 1.2 times to 2 times the first width P10, and by increasing the width of the second connection electrode 305, it is easy to spread the charge due to the start of discharge and the second width P20. , The color temperature of the three discharge cells (G, B) can be increased.

Here, the second connection electrodes 305 formed in the second and third discharge cells G and B have been described as having the second width P20 to be the same, but may be formed differently.

That is, when the second width P20 of the second connection electrode 305 formed in the second and third discharge cells G and B is different from each other, the second connection electrode 305 formed in the second discharge cell G is different. ) Is smaller than the width of the second connection electrode 305 formed in the third discharge cell (B).

The second electrode 300 protrudes in the direction in which the first electrode 300 is formed from the first and second electrode lines 311 and 312 and the second electrode line 312 formed in the direction crossing the first partition wall 332. The protruding electrode 313, the connection electrode 315 connecting the first and second electrode lines 311 and 312, and an extension electrode extending in the direction in which the second partition wall 334 is positioned in the first electrode line 211. 316).

Here, the connection electrode 315 is formed with the first width P1 in the same manner as the first connection electrode 304 of the first electrode 300.

Accordingly, in the plasma display apparatus according to the first, second, and third embodiments of the present invention, the length or width of the connection electrode or the extension electrode is prevented to reduce the color temperature of the second, third, and discharge cells of the first, second, and third discharge cells. By adjusting, there is an advantage that the color temperature can be increased.

Although the preferred embodiments of the present invention have been described in detail above, those skilled in the art to which the present invention pertains should make the present invention without departing from the spirit and scope of the present invention as defined in the appended claims. It will be appreciated that various modifications or changes can be made. Accordingly, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

1 is a perspective view illustrating a structure of a plasma display panel according to a first embodiment of the present invention.

2 is a simplified diagram illustrating an electrode arrangement of a plasma display panel according to a first embodiment of the present invention.

3 is a timing diagram of a method of time-division driving by dividing one frame into a plurality of subfields according to the first embodiment of the present invention.

4 is a timing diagram illustrating a driving signal for driving a plasma display panel according to a first embodiment of the present invention.

5 is a cross-sectional view illustrating an electrode structure of a plasma display panel according to a first embodiment of the present invention.

6 is a cross-sectional view illustrating an electrode structure of a plasma display panel according to a second embodiment of the present invention.

7 is a cross-sectional view illustrating an electrode structure of a plasma display panel according to a third embodiment of the present invention.

Claims (12)

First and second electrodes formed of a single layer, and first and second partition walls defining a discharge cell, At least one of the first and second electrodes, An electrode line formed in a direction crossing the first partition wall and an extension electrode extending from the electrode line in the first and second discharge cells in the direction of the second partition wall; The extension electrode, And first and second extension electrodes formed in the first and second discharge cells, respectively, having first and second extension lengths. The method of claim 1, wherein the second extension length, Plasma display device, characterized in that 1.2 to 2 times the first extension length. The method of claim 1, wherein each of the first and second extension electrodes, Plasma display device, characterized in that formed in the first, second width. The method of claim 3, wherein the first width is, Plasma display device, characterized in that 1.2 to 2 times the second width. The method of claim 1, And a black matrix formed on the first partition wall that partitions the first discharge cell. The method of claim 5, The black matrix is not formed on the first partition wall that partitions the second discharge cell, The second extension electrode, And a plasma display device in contact with the first partition wall. The method of claim 6, wherein the first and second electrodes, And asymmetrically formed in the first discharge cell and asymmetrically formed in the second discharge cell. The method of claim 6, wherein any one of the first and second electrodes, And the first and second discharge cells are identical to each other. The method of claim 1, The electrode line includes a first electrode line adjacent to the center of the discharge cell and a second electrode line adjacent to the first partition wall, At least one of the first and second electrodes may further include a connection electrode connecting the first and second electrode lines. The connection electrode, And the same width in the first and second discharge cells. First and second electrodes formed of a single layer, and first and second partition walls defining a discharge cell, At least one of the first and second electrodes, A first electrode line formed in a direction crossing the first partition wall, a connecting electrode connecting the first electrode line and a second electrode line, and an extension electrode extending from the first electrode line toward the second partition wall; The connection electrode, And first and second connection electrodes formed in the first and second discharge cells to have first and second widths, respectively. The method of claim 10, wherein the second width is, Plasma display device, characterized in that 1.2 to 2 times the first width. The method of claim 10, wherein the first and second electrodes, Plasma display device characterized in that formed asymmetrically to each other.

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