KR20030075346A - Aging method for plasma display panel - Google Patents

Abstract

PURPOSE: A method for aging a plasma display panel is provided to generate the discharge between display electrodes by applying a pulse type aging voltage and an address voltage to the first and the second display electrodes and an address electrode, respectively. CONSTITUTION: The first and the second display electrodes(X,Y) are arrayed in parallel on a front glass substrate. An address electrode(ADDR) are arrayed on a rear glass substrate. A pulse type aging voltage(+VS) is alternately applied to the first and the second display electrodes(X,Y). An address voltage(+VD) synchronized with the pulse type aging voltage(+VS) is applied to the address electrode(ADDR). The discharge is generated between the first and the second display electrodes(X,Y) by applying the pulse type aging voltage(+VS) and the address voltage(ADDR) to the first and the second display electrodes(X,Y) and the address electrode(ADDR), respectively.

Description

Aging method of plasma display panel {AGING METHOD FOR PLASMA DISPLAY PANEL}

The present invention relates to an aging method of a plasma display panel, and more particularly, to an aging method of an plasma display panel improved by changing a waveform applied during an aging process to shorten an aging time and increase efficiency.

In general, PDP stands for Plasma Display Panel and discharges inert gases such as Ne, Helium and Xen between two glass substrates, such as the front glass and the back glass, which face each other. And an ultraviolet light generated during the discharge to excite the phosphor.

As shown in FIG. 1, a general configuration of a general PDP includes a front panel 10, which is a display surface of an image, and a rear panel disposed in parallel with a predetermined distance from the front panel 10. rear panel).

In this case, the front panel 10 includes a plurality of display electrodes X and Y arranged in a stripe shape on a surface opposite to the surface glass substrate 11 and the rear panel 20 of the surface glass substrate 11. And a dielectric layer 13 stacked to cover the display electrodes X and Y to limit discharge current during discharge and to facilitate generation of wall charges, and magnesium oxide (MgO). And a dielectric protective layer 14 for protecting (13).

Meanwhile, the rear panel 20 is formed in a stripe shape on the rear glass substrate 21 and the rear glass substrate 21 so as to be orthogonal to the display electrodes X and Y. And a plurality of address electrodes ADDR and barrier ribs 23 for dividing the entire screen into a plurality of cells in a matrix form and forming a discharge space, and inside the discharge space formed by the barriers 23. It is made of a fluorescent layer (phosphor 24) that is printed on the coating and is excited by ultraviolet rays during the discharge of each cell to emit visible light. At this time, the fluorescent layer 24 is divided into red (R), green (G), blue (B) is applied alternately.

Here, each of the electrodes (X, Y, ADDR) is generally formed by a printing method. In the printing method, a pattern is printed by a printing paste, and then dried and calcined to form an electrode (X). , Y, ADDR), so significant impurities remain, and discharge occurs very unevenly when a rated voltage is applied after the production of the PDP. That is, a problem arises in that the brightness state of each cell becomes nonuniform with each other, thereby degrading the quality.

For the above reason, the PDP initially generates a discharge at a voltage considerably higher than the rated voltage, and when the drive is started in this state, impurities are released and its characteristics are gradually stabilized to discharge at the rated voltage.

At this time, during the aging operation, a main discharge occurs between the display electrodes X and Y adjacent to each other, and an auxiliary discharge occurs between the address electrodes ADDR and the display electrodes X and Y facing each other. Will be done.

FIG. 2 is a diagram illustrating a voltage waveform applied in the aging process of the PDP of FIG. 1 according to the related art.

Referring to FIG. 2, the address electrode ADDR is connected to the ground GND, and an aging voltage (+ VS) is applied to the display electrodes X and Y as an alternating pulse. In this case, when a + VS pulse wave is applied to the first display electrode X, the address electrode ADDR and the second electrode of the first display electrode X are shown in FIG. 3. When charge is transferred to the display electrode Y and a + VS pulse wave is applied to the second display electrode Y, the second display electrode Y is shown in FIG. The charge is transferred to the address electrode ADDR and the first display electrode X at. By the above operation, the discharge is turned on between the display electrodes X and Y, while the discharge is not generated between the display electrodes X and Y and the address electrode ADDR.

As a result, in the case of performing aging according to the prior art as described above, a part of the charges of the display electrodes X and Y are lost to the address electrode ADDR during the lighting operation, thereby causing a problem of increasing the + VS voltage. . In this case, the rated voltage of the general PDP is usually 150 to 250V, the higher the aging voltage (+ VS), the greater the risk of damage to the drive circuit, and the control operation becomes difficult.

In addition, since the discharge is not performed between the display electrodes X and Y and the address electrode ADDR as described above, there is a problem that the aging effect is lowered.

As shown in FIG. 4, the address electrode ADDR is connected to the ground GND, and aging -VS is applied to the display electrodes X and Y. A method of applying alternating pulses as a voltage has been proposed.

However, even in such a case, since the discharge is not performed between the display electrodes X and Y and the address electrode ADDR, a problem that takes a long time to perform the aging process occurs, and at the same time, the aging efficiency is lowered. The problem arises.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide an address voltage (+ VD) to an address electrode ADDR in synchronization with at least one of voltages applied to each display electrode (X, Y). Is applied between the display electrodes (X, Y) and the address electrodes (ADDR) to shorten the time for performing the aging process. Another object of the present invention is to provide an aging method of a plasma display panel capable of improving aging efficiency.

According to an aspect of the present invention for achieving the above object, the first and second display electrodes are arranged alternately parallel to each other on the front glass substrate, the address electrodes on the rear glass substrate are arranged so as to cross opposite each display electrode The present invention is applied to a plasma display panel, wherein an aging voltage is applied to each display electrode in an alternating pulse form, and an address voltage synchronized with an aging voltage applied to each display electrode is applied to each of the display electrodes. An aging method of a plasma display panel for discharging is provided.

According to another aspect of the present invention, an aging voltage is applied to each of the display electrodes in an alternating pulse form, and the address electrode has an address voltage synchronized with an aging voltage applied to the first display electrode or the second display electrode. By applying the discharge, discharge can be performed between each display electrode and discharge can be performed between the second display electrode and the address electrode or between the first display electrode and the address electrode.

In addition, according to another aspect of the present invention, the first and second display electrodes are arranged in parallel to each other on the front glass substrate, the address electrode on the rear glass substrate is arranged in the plasma display panel arranged so as to cross opposite each display electrode Applying an aging voltage in the form of an alternating pulse to each display electrode; The address electrode is applied with an address voltage synchronized with an aging voltage applied to the first display electrode for a first predetermined time, and then with an address voltage synchronized with an aging voltage applied to the second display electrode during a second predetermined time. By repeating the process, the discharge is performed between the display electrodes in the first predetermined time period, and the discharge is also generated between the second display electrode and the address electrode, and between the display electrodes in the second predetermined time interval. The discharge may be performed at the same time, and at the same time, the discharge may be performed between the first display electrode and the address electrode.

In addition, according to another aspect of the present invention, the first and second display electrodes are arranged in parallel to each other on the front glass substrate, the address electrode on the rear glass substrate is arranged in the plasma display panel arranged so as to cross opposite each display electrode Applied. An aging voltage is applied to each of the display electrodes in an alternating pulse form, and before the start of the operation of applying the aging voltage, a ramp waveform of 2VS voltage is applied to the first display electrode to redistribute wall charges. After applying the address voltage synchronized to the aging voltage applied to the second display electrode at an initial stage once, the remaining sections are kept in a ground state, and discharged between the display electrodes during the initial period of one cycle after the application of the aging voltage is started. In this case, the discharge is also generated between the first display electrode and the address electrode, and after that, the sustain discharge is performed between the display electrodes so that all of the lights are turned on.

In addition, according to another aspect of the present invention, the first and second display electrodes are arranged in parallel to each other on the front glass substrate, the address electrode on the rear glass substrate is arranged in the plasma display panel arranged so as to cross opposite each display electrode The address electrode maintains a ground state, and applies an aging voltage higher than the rated voltage to each display electrode in an alternating pulse form, but ramps a 2VS voltage to the first display electrode before starting the application of the aging voltage. By redistributing the wall charges by applying a waveform, it is possible to make all of them unlit by discharging them.

1 is a view showing an example of a schematic configuration of a typical three-electrode PDP

2 is a diagram illustrating a voltage waveform applied according to an aging process of a PDP according to the related art.

3 is a view showing the flow of charge during the aging operation according to the prior art

4 is a diagram illustrating a voltage waveform applied according to an aging process of a PDP by another conventional method.

5 is a view illustrating a voltage waveform applied in an aging process according to the first method of the present invention.

FIG. 6 is a view illustrating the flow of charge during an aging operation according to the waveform of FIG. 5.

7 illustrates voltage waveforms applied in an aging process according to the second method of the present invention.

FIG. 8 is a diagram illustrating the flow of charge during an aging operation according to the waveform of FIG. 7;

9 illustrates voltage waveforms applied during an aging process according to a third method of the present invention.

FIG. 10 is a view illustrating the flow of charge during an aging operation according to the waveform of FIG. 9;

11 illustrates voltage waveforms applied during an aging process according to a fourth method of the present invention.

12 is a view showing the flow of charge during an aging operation according to the waveform of FIG.

FIG. 13 is a diagram showing a voltage waveform used when performing a lighting test of a PDP according to the present invention. FIG.

14 is a view showing the flow of charge during operation according to the waveform of FIG.

15 is a view showing a voltage waveform used when performing a non-lighting test of the PDP according to the present invention

16 is a view showing the flow of charge during operation according to the waveform of FIG.

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

FIG. 5 is a diagram illustrating a voltage waveform applied during an aging process according to the first method of the present invention, and FIG. 6 is a diagram showing the flow of electric charge during an aging operation according to the waveform of FIG. 5.

Referring to FIG. 5, an aging voltage (+ VS) higher than a rated voltage is applied to each display electrode X and Y in an alternating pulse form, and each display electrode X and Y is applied to the address electrode ADDR. ), An address voltage + VD synchronized with the aging voltage + VS is applied.

In this case, when a + VS pulse wave is applied to the first display electrode X and a + VD pulse wave is applied to the address electrode ADDR, the first display is shown in FIG. Charge is transferred from the electrode X and the address electrode ADDR to the second display electrode Y, a + VS pulse wave is applied to the second display electrode Y, and a + VD pulse wave is applied to the address electrode ADDR. When is applied, the charge is transferred from the second display electrode Y and the address electrode ADDR to the first display electrode X as shown in FIG. 6 (B section lighting charge).

In this case, no discharge is generated between each of the display electrodes X and Y and the address electrode ADDR, but an aging process is performed by continuously discharging between the display electrodes X and Y.

FIG. 7 is a diagram illustrating a voltage waveform applied during an aging process according to the second method of the present invention, and FIG. 8 is a diagram illustrating the flow of electric charge during an aging operation according to the waveform of FIG. 7.

Referring to FIG. 7, an aging voltage (+ VS) higher than the rated voltage is applied to each of the display electrodes X and Y in an alternating pulse form, and the first display electrode X is applied to the address electrode ADDR. ), An address voltage (+ VD) synchronized with an aging voltage (+ VS) is applied.

In this case, when a + VS pulse wave is applied to the first display electrode X and a + VD pulse wave is applied to the address electrode ADDR, the first display is shown in FIG. Charge is transferred from the electrode X and the address electrode ADDR to the second display electrode Y, a + VS pulse wave is applied to the second display electrode Y, and the address electrode ADDR is grounded GND. In the case of a state, charge is transferred from the second display electrode Y to the address electrode ADDR and the first display electrode X as shown in FIG. As a result of the movement of the electric charge as described above, a discharge is generated between the display electrodes X and Y, and at the same time, a discharge is also generated between the second display electrode Y and the address electrode ADDR.

Applicant confirmed the discharge between the second display electrode (Y) and the address electrode ADDR as a result of applying the same voltage as the waveform shown in FIG. 7 and between the first and second display electrodes (X, Y) Comparing with the discharge of, it can be seen that the discharge occurs near the slightly red side during the address discharge. This is because red (R) is turned on first when the discharge voltage between the second display electrode (Y) and the address electrode (ADDR) is changed, and when the light is turned on, the red (R) light is displayed close to red.

FIG. 9 is a diagram illustrating a voltage waveform applied during an aging process according to the third method of the present invention, and FIG. 10 is a diagram showing the flow of electric charge during an aging operation according to the waveform of FIG. 9.

Referring to FIG. 9, in FIG. 7, an address voltage (+ VD) synchronized with an aging voltage (+ VS) applied to the first display electrode X is applied to the address electrode ADDR. In FIG. 9, an address voltage (+ VD) synchronized with an aging voltage (+ VS) applied to the second display electrode Y is applied to the address electrode ADDR.

In this case, when the + VS pulse wave is applied to the first display electrode X and the address electrode ADDR is in the ground (GND) state, the first display is shown in FIG. Charge transfers from the electrode X to the address electrode ADDR and the second display electrode Y, a + VS pulse wave is applied to the second display electrode Y, and a + VD pulse wave is applied to the address electrode ADDR. When is applied, charge is transferred from the second display electrode Y and the address electrode ADDR to the first display electrode X as shown in FIG. 10 (B section lighting charge).

As a result of the movement of the electric charges, discharge is performed between the display electrodes X and Y, and at the same time, discharge is also performed between the first display electrode X and the address electrode ADDR.

On the other hand, the applicant has confirmed the discharge between the first display electrode (X) and the address electrode ADDR as a result of applying the same voltage as the waveform shown in Figure 9 and the first and second display electrodes (X, Y) Comparing with the discharge between), it can be seen that the discharge occurs near the slightly red side during the address discharge. This is because red (R) is turned on first when the discharge voltage between the first display electrode (X) and the address electrode (ADDR) is changed, and when the light is turned on, the light (R) is displayed close to red.

11 is a diagram illustrating a voltage waveform applied in an aging process according to the fourth method of the present invention, and FIG. 12 is a diagram illustrating a flow of electric charges during an aging operation according to the waveform of FIG. 11.

11, an aging voltage (+ VS) higher than the rated voltage is applied to each of the display electrodes X and Y in an alternating pulse form; The address electrode ADDR is applied with an address voltage (+ VD) synchronized with an aging voltage (+ VS) applied to the first display electrode X for a first predetermined time, and then for a second predetermined time. The process of applying the address voltage + VD synchronized with the aging voltage + VS applied to the display electrode Y is repeated. That is, the method of FIG. 7 and FIG. 9 is mixed.

In this case, when a + VS pulse wave is applied to the first display electrode X and a + VD pulse wave is applied to the address electrode ADDR, the first display is shown in FIG. Charge is transferred from the electrode X and the address electrode ADDR to the second display electrode Y, a + VS pulse wave is applied to the second display electrode Y, and the address electrode ADDR is grounded GND. In the case of a state, charge is transferred from the second display electrode Y to the address electrode ADDR and the first display electrode X as shown in FIG. 12 (B section lighting charge). As a result, in the first predetermined time period, the discharge is performed between the display electrodes X and Y, and the discharge is also generated between the second display electrode Y and the address electrode ADDR.

In addition, when a + VS pulse wave is applied to the second display electrode Y and a + VD pulse wave is applied to the address electrode ADDR, a second display is shown in FIG. Charge is transferred from the electrode Y and the address electrode ADDR to the first display electrode X, a + VS pulse wave is applied to the first display electrode X, and the address electrode ADDR is grounded GND. In the case of a state, charge is transferred from the first display electrode X to the address electrode ADDR and the second display electrode Y as shown in FIG. As a result, in the second predetermined time period, the discharge is performed between the display electrodes X and Y, and the discharge is also generated between the first display electrode X and the address electrode ADDR.

FIG. 13 is a diagram illustrating a voltage waveform used when a lighting test of a PDP is performed according to the present invention, and FIG. 14 is a diagram illustrating a flow of electric charge during operation according to the waveform of FIG. 13.

Referring to FIG. 13, an aging voltage (+ VS) higher than the rated voltage is applied to each display electrode (X, Y) in an alternating pulse form, but before the operation of applying the aging voltage (+ VS) is performed. A ramp waveform having a voltage of 2VS is applied to one display electrode X, and an address voltage (+ VD) that is initially synchronized to an aging voltage (+ VS) applied to the second display electrode Y is applied to the address electrode ADDR. After applying), keep the rest of the ground (GND) so that all the lights.

When the operation is divided into sections, the ramp waveform of the 2VS voltage is applied to the first display electrode X at 60 s before the operation of applying the aging voltage (+ VS) to the display electrodes X and Y starts. When applied, redistribution of wall charges occurs, as shown in FIG. In other words, all wall charges accumulated in the panel are removed. In this case, when the + VS pulse wave is applied to the second display electrode Y and the + VD pulse wave is applied to the address electrode ADDR, the second display electrode ( Charge is transferred from Y) and the address electrode ADDR to the first display electrode X, and then a + VS pulse wave is applied to the first display electrode X and the address electrode ADDR is grounded (GND). In FIG. 14, charge moves from the first display electrode X to the address electrode ADDR and the second display electrode Y as shown in FIG. In this manner, discharge is generated between the display electrodes X and Y, and discharge is also performed between the first display electrode X and the address electrode ADDR.

After that, when the + VS pulse wave is applied to the second display electrode Y and the address electrode ADDR is in the ground GND state, the second display electrode Y is shown in FIG. The charge discharge is transferred to the address electrode ADDR and the first display electrode X while sustain discharge is performed.

After that, when the + VS pulse wave is applied to the first display electrode X again and the address electrode ADDR is in the ground (GND) state, as shown in FIG. The charge discharge is transferred from the X to the address electrode ADDR and the second display electrode Y, and sustain discharge is performed.

Then, when the + VS pulse wave is applied to the second display electrode Y again and the address electrode ADDR is in the ground (GND) state, as shown in FIG. 14 (F section lighting charge), the second display electrode ( The charge discharge is transferred from the Y to the address electrode ADDR and the first display electrode X, and sustain discharge is performed.

As a result, after the wall charge redistribution is performed, an initial one-time discharge is caused by the discharge of the B and C sections by applying a pulse to the address electrode ADDR. After the first discharge, the sustain discharge is continuously performed by the driving waveforms between the first and second display electrodes X and Y to play a role corresponding to “ON” in the memory function.

FIG. 15 is a diagram illustrating a voltage waveform used when a non-lighting test of a PDP is performed according to the present invention, and FIG. 16 is a diagram illustrating a flow of electric charge during operation according to the waveform of FIG. 15.

Referring to FIG. 15, the address electrode ADDR is maintained at the ground (GND) state, and an aging voltage (+ VS) higher than the rated voltage is applied to each of the display electrodes X and Y in an alternate pulse form. Before the start of the operation of applying the aging voltage (+ VS), a ramp waveform of 2VS voltage is applied to the first display electrode X so that all of them become unlit.

When the operation is divided into sections, the ramp waveform of the 2VS voltage is applied to the first display electrode X at 60 s before the operation of applying the aging voltage (+ VS) to the display electrodes X and Y starts. When applied, the redistribution of wall charges is performed as shown in section 16 (charged section A charge).

In this case, when the + VS pulse wave is applied to the second display electrode Y and the address electrode ADDR is in the ground (GND) state, as shown in (B section lighting charge) of FIG. 16, the second display electrode ( The charge is transferred from Y) to the first display electrode X and the address electrode ADDR, but no discharge occurs. As a result, wall charges are accumulated by the redistribution of wall charges, but since the address electrodes ADDR are in the ground (GND) state, they do not have discharges between the electrodes.

Thereafter, even when a + VS pulse wave is applied to the first display electrode X and the address electrode ADDR is in the ground (GND) state, the first display electrode is shown in FIG. Charge moves from (X) to the address electrode ADDR and the second display electrode Y, but no discharge occurs.

Thereafter, the operation of the B and C sections is repeated in the D, E, and F sections, thereby preventing the discharge.

If the PDP lighting test and non-lighting test are used properly, the aging line can immediately determine whether to re-age after the aging of the PDP, and the work required for "pattern cutting section → inspection section → reaging work section". The cost can be reduced.

The present invention is not limited to the embodiments described above, and various modifications and changes can be made by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

As described above, the aging method of the plasma display panel according to the present invention applies the address voltage (+ VD) to the address electrode ADDR in synchronization with at least one of the voltages applied to the display electrodes X and Y. By applying the discharge to each of the display electrodes (X, Y), and at the same time to discharge between each display electrode (X, Y) and the address electrode ADDR to shorten the time for performing the aging process This has the effect of improving efficiency.

Claims (6)

The first and second display electrodes X and Y are alternately arranged in parallel on the front glass substrate, and the plasma is arranged so that the address electrodes ADDR are opposed to the display electrodes X and Y on the rear glass substrate. In the aging method applied to the display panel, An aging voltage (+ VS) is applied to each display electrode (X, Y) in an alternating pulse form, and the address electrode (ADDR) is applied to an aging voltage (+ VS) applied to each display electrode (X, Y). A method of aging a plasma display panel, wherein discharge is generated between each display electrode (X, Y) by applying a synchronized address voltage (+ VD), respectively. The first and second display electrodes X and Y are alternately arranged in parallel on the front glass substrate, and the plasma is arranged so that the address electrodes ADDR are opposed to the display electrodes X and Y on the rear glass substrate. In the aging method applied to the display panel, An aging voltage (+ VS) is applied to each of the display electrodes (X, Y) in an alternating pulse form, and the address electrode (ADDR) is synchronized with an aging voltage (+ VS) applied to the first display electrode (X). By applying a predetermined address voltage (+ VD) to discharge between each display electrode (X, Y), and also to discharge between the second display electrode (Y) and the address electrode ADDR. An aging method of a plasma display panel. The first and second display electrodes X and Y are alternately arranged in parallel on the front glass substrate, and the plasma is arranged so that the address electrodes ADDR are opposed to the display electrodes X and Y on the rear glass substrate. In the aging method applied to the display panel, An aging voltage (+ VS) is applied to each of the display electrodes (X, Y) in an alternating pulse form, and the address electrode (ADDR) is synchronized with an aging voltage (+ VS) applied to the second display electrode (Y). By applying a predetermined address voltage (+ VD) to discharge between each display electrode (X, Y), and also to discharge between the first display electrode (X) and the address electrode (ADDR). An aging method of a plasma display panel. The first and second display electrodes X and Y are alternately arranged in parallel on the front glass substrate, and the plasma is arranged so that the address electrodes ADDR are opposed to the display electrodes X and Y on the rear glass substrate. In the aging method applied to the display panel, Applying an aging voltage (+ VS) in the form of an alternating pulse to each of the display electrodes (X, Y); The address electrode ADDR is applied with an address voltage (+ VD) synchronized with an aging voltage (+ VS) applied to the first display electrode X for a first predetermined time, and then for a second predetermined time. By repeating the process of applying the address voltage (+ VD) synchronized with the aging voltage (+ VS) applied to the display electrode (Y), discharge occurs between the display electrodes (X, Y) in the first predetermined time interval. At the same time, a discharge is also generated between the second display electrode Y and the address electrode ADDR, and a discharge is generated between the display electrodes X and Y during the second predetermined time period. The method of aging a plasma display panel according to claim 1, wherein a discharge is also generated between the display electrode (X) and the address electrode (ADDR). The first and second display electrodes X and Y are alternately arranged in parallel on the front glass substrate, and the plasma is arranged so that the address electrodes ADDR are opposed to the display electrodes X and Y on the rear glass substrate. In the aging method applied to the display panel, An aging voltage (+ VS) is applied to each of the display electrodes (X, Y) in the form of an alternating pulse, and a ramp waveform of 2VS voltage is applied to the first display electrode (X) before the application of the aging voltage (+ VS) starts. To redistribute wall charges, and to the address electrode ADDR, an address voltage (+ VD) that is initially synchronized with an aging voltage (+ VS) applied to the second display electrode (Y) is applied. After the rest of the period is maintained to the ground (GND) state, the discharge is generated between each of the display electrodes (X, Y) during the initial 1 period after the start of the application of the aging voltage (+ VS) and at the same time the first display electrode Discharging is also performed between (X) and the address electrode ADDR, and after that, a sustain discharge is performed between each of the display electrodes X and Y so that all of the lights are turned on. Aging method of a plasma display panel. The first and second display electrodes X and Y are alternately arranged in parallel on the front glass substrate, and the plasma is arranged so that the address electrodes ADDR are opposed to the display electrodes X and Y on the rear glass substrate. In the aging method applied to the display panel, The address electrode ADDR maintains the ground (GND) state, and applies an aging voltage (+ VS) higher than the rated voltage in the form of an alternating pulse to each of the display electrodes (X, Y). Before redistribution of VS), a ramp waveform having a voltage of 2VS is applied to the first display electrode X to redistribute the wall charges, and to prevent the discharge from occurring. An aging method of a plasma display panel.