KR100647667B1 - Driving method of plasma display panel - Google Patents

Abstract

An object of the present invention is to provide a method for driving a plasma display panel in which a two-electrode structured plasma display panel in which electrodes are arranged in a partition wall is reduced, thereby reducing manufacturing costs.

In order to achieve the above object, the present invention, the first substrate and the second substrate disposed opposite to each other; A partition wall disposed between the first substrate and the second substrate and defining discharge cells together with the first substrate and the second substrate; First discharge electrodes facing each other toward the inside of the discharge cell and extending in one direction; Second discharge electrodes facing each other toward the inside of the discharge cell in a direction crossing the direction in which the first discharge electrodes face each other, and extending to cross the direction in which the first discharge electrodes extend; A phosphor layer disposed in the discharge cell; And a discharge gas in the discharge cell.

In the reset period in which the discharge cells are initialized, a reset pulse consisting of a rising ramp pulse and a falling ramp pulse is applied, a scan pulse and a display data signal are applied in an address period in which the discharge cells to be turned on among the discharge cells are selected, and the selected discharge The present invention provides a method of driving a plasma display panel, wherein a sustain pulse is applied during a sustain period in which a sustain discharge is performed in a cell.

Description

Driving method of plasma display panel {Driving method of plasma display panel}

1 is an exploded perspective view showing a plasma display panel for applying a driving method according to the prior art.

FIG. 2 is a plan view of the plasma display panel of FIG. 1 taken along line II-II. FIG.

3 is a view briefly illustrating an electrode arrangement of FIG. 1.

4 is a block diagram schematically illustrating a driving apparatus for driving the plasma display panel of FIG. 1.

FIG. 5 is a timing diagram illustrating a driving signal for driving the plasma display panel of FIG. 1.

6 is a partially separated perspective view illustrating a plasma display panel to which the driving method of the present invention is applied.

FIG. 7 is a cross-sectional view taken along line III-III of FIG. 6.

FIG. 8 is a cross-sectional view taken along line IV-IV of FIG. 7.

FIG. 9 is a layout view of the discharge cells, first and second discharge electrodes illustrated in FIG. 6.

FIG. 10 is a diagram schematically illustrating an electrode arrangement of the plasma display panel of FIG. 6.

FIG. 11 is a block diagram schematically illustrating an apparatus for driving a plasma display panel for driving the plasma display panel of FIG. 6.

FIG. 12 is a timing diagram illustrating an exemplary embodiment of a driving signal for driving the plasma display panel of FIG. 6.

FIG. 13 is a timing diagram illustrating another exemplary embodiment of a driving signal for driving the plasma display panel of FIG. 6.

14A to 14F are diagrams showing wall charge states in discharge cells according to the driving signals of FIGS. 12 and 13, respectively.

Explanation of symbols on the main parts of the drawings

200 ... plasma display panel, 201 ... first substrate,

202 ... second substrate, 205 ... bulkhead,

206 ... first discharge electrode, 207 ... second discharge electrode,

209 protective layer, 210 phosphor layer,

Ce ...

Y1, ..., Yn ... scanning electrode electrode lines,

X1, ..., Xm ... holding electrode lines,

1000, image processing unit, 1002, logic control unit,

1004 ... Y drive, 1006 ... X drive,

Vs ... first voltage, Vset ... second voltage,

Vset + Vs ... third voltage, Vnf ... fourth voltage,

Vx ... 5th voltage, Vsch ... 6th voltage,

Vscl ... seventh voltage, Va ... eighth voltage.

The present invention relates to a method of driving a plasma display panel, and more particularly, to driving a plasma display panel having a two-electrode structure in which electrodes are arranged in a partition wall, driving a plasma display panel that simplifies a power level and reduces manufacturing costs. It is about a method.

Recently, a plasma display panel, which is drawing attention as a replacement of a conventional cathode ray tube display device, is discharged after a discharge gas is filled between two substrates on which a plurality of electrodes are formed. The phosphor formed in a predetermined pattern by the ultraviolet rays is excited to obtain a desired image.

1 is a partially separated perspective view of a three-electrode surface discharge plasma display panel according to the prior art, and FIG. 2 is a plan view of the plasma display panel of FIG. 1 taken along line II-II. A description with reference to FIGS. 1 and 2 below.

The plasma display panel 1 of FIG. 1 includes a first panel 110 and a second panel 120.

The first panel 110 includes a first dielectric layer 115 disposed to cover the first substrate 111, the scan electrodes 112 and the sustain electrodes 113 on the first substrate, and the first dielectric layer 115. ) Is provided with a first protective film 116. The scan electrode lines 112 and the sustain electrode lines 113 form a pair to form the sustain electrode pair 114, the bus electrodes 112a and 113a for conductivity, and the transparent electrodes 112b and 113b for luminance. ).

The second panel 120 includes a second dielectric layer covering the second substrate 121 and the address electrode 122 formed in a direction orthogonal to a direction in which the scan electrodes 112 and the sustain electrodes 113 extend. 123, a partition 124 partitioning discharge cells on the second dielectric layer 123, a phosphor layer 125 disposed in the discharge cell, and a second layer for protecting the phosphor layer 125. The protective film 128 is provided. Discharge gas is injected into the discharge cell Ce.

3 is a view schematically showing the arrangement of the electrode line of FIG. 1.

The scan electrode lines Y1, ..., Yn and the sustain electrode lines X1, ..., Xn are arranged in parallel to each other, and the address electrode lines A1, ..., Am are arranged in parallel with each other. It is disposed to cross the lines Y1, ..., Yn and the sustain electrode lines X1, ..., Xn, and the crossing area divides the discharge cell Ce.

4 is a block diagram schematically illustrating a driving apparatus for driving the plasma display panel of FIG. 1.

The driving apparatus of the plasma display panel includes an image processor 400, a logic controller 402, a Y driver 404, an address driver 406, an X driver 408, and a plasma display panel 1. The image processor 400 converts an external image signal from the outside and outputs it as an internal image signal, and the logic controller 402 receives an internal image signal, respectively, an address driving control signal SA and a Y driving control signal SY. ) And the X driving control signal SX, and the Y driving unit 404, the address driving unit 406, and the X driving unit 408 receive driving control signals, respectively, and drive signals to the scan electrode, the address electrode, and the sustain electrode, respectively. Outputs

FIG. 5 is a timing diagram illustrating a driving signal for driving the plasma display panel of FIG. 1.

In order to express an image, a unit frame is divided into a plurality of subfields, and each subfield has a reset period PS in which an initializing discharge is performed with respect to the discharge cells so that the discharge is performed according to the gray scale weight, and the discharge cells to be turned on The sustain period PS is divided according to the selected address period PA and the gray scale weight in the selected discharge cell. The reset pulse of the reset period PR, the scan pulse of the address period PA, the display data signal, and the sustain pulse of the sustain period PS are applied to drive the plasma display panel (1 in FIG. 1).

On the other hand, in the conventional plasma display panel having a three-electrode structure, a sustain discharge occurs between the sustain electrode and the scan electrode on the first substrate, resulting in a low discharge volume and poor discharge efficiency and luminance. It is becoming. In addition, in order to drive the plasma display panel having a three-electrode structure, the voltage level of the driving signal is varied, and the driving device for applying the driving signal is complicated, thereby increasing the manufacturing cost.

An object of the present invention is to provide a method for driving a plasma display panel in which a two-electrode structured plasma display panel in which electrodes are arranged in a partition wall is reduced, thereby reducing manufacturing costs.

In order to achieve the above object, the present invention, the first substrate and the second substrate disposed opposite to each other; A partition wall disposed between the first substrate and the second substrate and defining discharge cells together with the first substrate and the second substrate; First discharge electrodes facing each other toward the inside of the discharge cell and extending in one direction; Second discharge electrodes facing each other toward the inside of the discharge cell in a direction crossing the direction in which the first discharge electrodes face each other, and extending to cross the direction in which the first discharge electrodes extend; A phosphor layer disposed in the discharge cell; And a discharge gas in the discharge cell.

In the reset period in which the discharge cells are initialized, a reset pulse consisting of a rising ramp pulse and a falling ramp pulse is applied, a scan pulse and a display data signal are applied in an address period in which the discharge cells to be turned on among the discharge cells are selected, and the selected discharge The present invention provides a method of driving a plasma display panel, wherein a sustain pulse is applied during a sustain period in which a sustain discharge is performed in a cell.

According to another aspect of the present invention, in the reset period, the first discharge electrodes have a rising ramp pulse that rises by a second voltage from a first positive voltage and finally reaches a third voltage, and falls from the first voltage. The falling ramp pulse which finally reaches the fourth negative voltage is applied, the fifth discharge voltage is applied to the second discharge electrodes while the falling ramp pulse is applied,

During the address period, a scan pulse having a seventh voltage of negative polarity is sequentially applied to the first discharge electrodes, and a scan pulse having a negative seventh voltage is sequentially applied, and the second discharge electrodes have a positive eighth voltage in accordance with the scan pulse. A display data signal is applied,

In the sustain period, it is preferable that a sustain pulse having an alternating positive first voltage and negative first voltage is applied to the first discharge electrodes.

According to such another feature of the present invention, the magnitude of the fifth voltage is preferably equal to the magnitude of the eighth voltage.

According to another aspect of the present invention, it is preferable that the magnitude of the fourth voltage is equal to the magnitude of the first voltage, and the magnitude of the seventh voltage is greater than the magnitude of the fourth voltage.

According to another aspect of the present invention, it is preferable that the sustain pulse further has a ground voltage which is an intermediate voltage between the first positive voltage and the first negative voltage.

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

FIG. 6 is a partially separated perspective view illustrating a plasma display panel according to the present invention, FIG. 7 is a cross-sectional view taken along line III-III of FIG. 6, FIG. 8 is a cross-sectional view taken along line IV-IV of FIG. 7, FIG. 9 is a layout view of the discharge cells and first and second discharge electrodes shown in FIG. 6. The structure of the plasma display panel of the present invention will be described with reference to FIGS. 6 to 9.

In the plasma display panel 200 of FIG. 6, the first substrate 201, the second substrate 202, the first discharge electrodes 206, the second discharge electrodes 207, the phosphor layers 210, Barrier ribs 205 and discharge gas (not shown).

The first substrate 201 and the second substrate 202 face each other and are spaced apart by a predetermined interval. The first substrate 201 or the second substrate 202 may be formed of a transparent material such as glass. An image may be embodied in the direction of the first substrate 201, but an image may be embodied in the direction of the second substrate 202, and the image may be embodied in both sides. Meanwhile, as shown in FIG. 1, the scan electrode 112 and the sustain electrode 113 are formed at portions of the lower surface of the first substrate in the direction of the second substrate from the first substrate to define the discharge cells Ce. Since the sustain electrode pairs 114 and the first dielectric layer 115 covering the sustain electrode pairs 114 do not exist, the front transmittance of visible light is remarkably improved. Accordingly, while the visible light transmittance of the conventional plasma display panel 1 shown in FIG. 1 is about 60%, the visible light transmittance of the plasma display panel 200 of FIG. 6 is 80% or more. As a result, the luminous efficiency and luminance can be improved, and if the image is realized at a conventional level, the first discharge electrodes 206 and the second discharge electrodes 207 can be driven at a relatively low voltage. It becomes possible.

A partition wall 205 is provided between the first substrate 201 and the second substrate 202, and the partition wall 205 may be implemented as one partition wall 205, as shown in FIG. 6. The first partition wall in the direction of the first substrate 201 and the second partition wall in the direction of the second substrate 202 may be implemented. Hereinafter, a case in which the partition is provided as one partition 205 as illustrated in FIG. 6 will be described. The partition wall 205 defines discharge cells Ce together with the first substrate 201 and the second substrate 202. The discharge cells Ce partitioned by the partition walls 205 have a rectangular cross section, and the discharge cells Ce are arranged in a matrix form as a whole. However, the shape of the partition wall is not limited thereto, and as long as a plurality of discharge spaces can be formed, the partition walls may be partition walls of various patterns, for example, waffles, deltas, and the like. In addition, the cross section of the discharge space may be formed to be a polygon, such as a triangle, a pentagon, or a circle, an ellipse, or the like, in addition to the quadrangle. The partitions prevent erroneous discharges from occurring between the discharge cells Ce.

The first discharge electrodes 206 are disposed to face each other toward the inside of the discharge cell Ce, and the inside of the discharge cell Ce is intersected with the direction in which the first discharge electrodes 206 face each other. The second discharge electrodes 207 are disposed to face each other. 8 and 9, the first discharge electrodes 206 may be disposed to face each other in the y direction, and the second discharge electrodes 207 may be disposed to face each other in the x direction, and the first discharge may be disposed. Of course, the electrodes face each other in the x direction, and the second discharge electrodes face each other in the y direction. The first discharge electrode 206 and the second discharge electrode 207 are formed of a conductive metal such as aluminum or copper. Referring to FIG. 9, the first discharge electrode 206 and the second discharge electrode 207 will be described in detail. The first and second discharge electrodes 206 and 207 have wall charges due to the applied voltage. The first and second discharge electrode extensions 206a and 207a for inducing stacking and the first and second discharge electrode connectors 206b and 207b for connecting the first and second discharge electrodes to extend. Meanwhile, the first discharge electrode 206 extends in one direction (the x direction in FIG. 9) to form a line (Y1,..., Yn in FIG. 10), and the second discharge electrode 207 discharges the first discharge. The electrode 206 extends in the direction crossing the extending direction (y direction in FIG. 9) to form a line (X1, ..., Xm in FIG. 10). Of course, unlike the drawing, the first discharge electrodes 206 may extend in the y direction, and the second discharge electrodes 207 may extend in the x direction.

The barrier ribs 205 prevent the first discharge electrode 206 and the second discharge electrode 207 provided from the barrier rib 205 from directly energizing each other, and the charged particles are discharged from the first discharge electrode 206 and the second discharge. It is prevented from directly colliding with the electrode 207 and damaging them, and is formed as a dielectric material capable of inducing charged particles to accumulate wall charges. Such dielectrics include PbO, B ₂ O ₃ , SiO _2, and the like.

It is preferably covered by an MgO layer that is at least a protective layer 209 on the sides of the partitions 205. The MgO layer 209 prevents the partition walls 205 formed of the dielectric from being damaged and emits a lot of secondary electrons upon discharge. The MgO layer 209 is mainly formed of a thin film by sputtering or E-beam evaporation.

The phosphor layers 210 are disposed in the discharge cells Ce. The phosphor layers 210 may be disposed at various positions, and arrangement positions of the phosphor layers 210 in FIG. 6 are as follows. The phosphor layers 210 are disposed on the upper surface of the second substrate 202 in the direction from the second substrate 202 to the first substrate 202. The phosphor layers 210 may include a blue light emitting phosphor layer, a red light emitting phosphor layer, and a red light emitting phosphor layer for each discharge cell Ce.

The phosphor layer 210 includes a component that emits visible light by receiving ultraviolet rays emitted by the discharge between the first discharge electrode 206 and the second discharge electrode 207. The red light emitting phosphor layer is formed of Y (V, P) O4: Eu and the like, the green light emitting phosphor layer comprises a phosphor such as Zn2SiO4: Mn, YBO3: Tb and the like, the blue light emitting phosphor layer comprises a phosphor such as BAM: Eu and the like.

 In the discharge cell Ce, a discharge gas such as Ne, Xe or the like and a mixed gas thereof is encapsulated. Both sides of the partition wall may be viewed as a two-electrode structure formed to face each other, unlike the three-electrode surface discharge structure generated on one side of the discharge cell is generated between the adjacent both sides and gradually diffused to the center portion of the discharge cell (Ce). As a result, the volume of the region where the discharge occurs is increased, and the space charge in the discharge cell Ce, which is not well used in the past, also contributes to light emission. That is, since the discharge area is enlarged to increase the amount of plasma, the discharge efficiency and luminance are improved, and low voltage driving is also possible. Therefore, even when a high concentration of Xe gas is used as the discharge gas, the low voltage driving can be performed, thereby improving the luminous efficiency dramatically.

Hereinafter, the first discharge electrode 206 is used as the scan electrode and the second discharge electrode 207 is also used as the sustain electrode.

FIG. 10 is a view schematically illustrating an electrode layout of the plasma display panel of FIG. 6. Referring to the drawings, scan electrode lines Y1,..., And Yn are arranged side by side in the row direction of the panel 200 (in FIG. 6), and in the column direction of the panel 200 of FIG. 6. The sustain electrode lines X1, ..., Xm are disposed to intersect the scan electrode lines Y1, ..., Yn. An intersecting area between the scan electrode lines Y1,..., Yn and the sustain electrode lines X1,..., Xm defines a discharge cell Ce.

FIG. 11 is a block diagram schematically illustrating an apparatus for driving a plasma display panel for driving the plasma display panel of FIG. 6.

The structure of the plasma display panel 200 to which the driving method of the present invention is applied is a two-electrode structure, which is more concise than the conventional driving apparatus shown in FIG.

Referring to the drawings, an image processor 1000, a logic controller 1002, a Y driver 1004, an X driver 1006, and a plasma display panel 200 are provided.

The image processor 1000 receives an external image signal such as a PC signal, a DVD signal, a video signal, or a TV signal from the outside, converts an analog signal into a digital signal, and processes the digital signal into an internal image signal. The internal video signals are 8-bit red (R), green (G), and blue (B) image data, clock signals, and vertical and horizontal sync signals, respectively.

The logic controller 1002 receives an internal image signal from the image processor 1000 and undergoes a gamma correction and an automatic power control (APC) step, respectively, to drive the Y drive control signal SY and the X drive control signal SX. Outputs

The Y driving unit 1004 receives the Y driving control signal SY from the logic control unit 1002 and includes rising ramp pulses and falling ramp pulses for initialization of the discharge cells in the reset period (PR of FIGS. 12 and 13). While maintaining the reset pulse and the positive sixth voltage (Vsch in FIGS. 12 and 13) in the address period (PAs in FIGS. 12 and 13), the seventh voltage in the negative order is sequentially formed along the vertical direction of the panel 200. Scan pulses having Vscl of 12, 13, and a first positive voltage (Vs of Figs. 12, 13) and a first negative voltage (Figs. 12, 13-) in the sustain period (PS of Figs. 12, 13). The sustain pulse having Vs) is applied to the scan electrode lines Y1,..., Yn of the plasma display panel 200.

The X driving unit 1006 receives the X driving control signal SX from the logic control unit 1002, and the ground voltage (Vg in FIGS. 12 and 13) and the fifth voltage (in the PR periods in FIGS. 12 and 13). Display data signals having address voltages (Va in FIGS. 12 and 13) to select discharge cells to be turned on in accordance with the scanning pulses in the address periods (PAs in FIGS. 12 and 13) and Vx in FIGS. In the sustain period (PS in FIGS. 12 and 13), the ground voltage (Vg in FIGS. 12 and 13) is applied to the sustain electrode lines X1,..., Xm of the plasma display panel 200. Compared with the conventional driving device shown in FIG. 4, the configuration thereof is simplified, and manufacturing cost is reduced.

12 is a timing diagram illustrating an embodiment of a driving signal for driving the plasma display panel of FIG. 6 as a driving method of the present invention, and FIGS. 14A to 14F are diagrams showing wall charge states in discharge cells, respectively.

First, in the reset period PR, a reset pulse consisting of a rising ramp pulse and a falling ramp pulse is applied to the scan electrode lines Y1, ... Yn. The rising ramp pulse rises from the first positive voltage Vs by the second voltage Vset to reach the third voltage Vset + Vs, and falls from the first voltage Vs to be the fourth negative voltage. (Vnf) is reached. The fifth voltage Vx, which is a positive bias voltage, is applied to the sustain electrode lines X1,..., Xm when the falling ramp pulse is applied. When the rising ramp pulse is applied, as shown in FIG. 14A, negative wall charges are accumulated near the scan electrode Y in the discharge cell, and positive wall charges are accumulated near the sustain electrode X, resulting in weak discharge. do. When the falling ramp pulse is applied, the negative wall charges accumulated near the scan electrode Y and the positive wall charges accumulated near the sustain electrode X are erased to generate a weak discharge, which is illustrated in FIG. 14B. As a result, a small amount of negative wall charges accumulates near the scan electrode Y, and a small amount of positive wall charges accumulates near the sustain electrode X.

During the address period PA, the scan pulses having the sixth voltage Vscl of the negative polarity are sequentially applied to the scan electrode lines Y1,..., And Yn, and the sustain electrode is applied. A display data signal having a positive eighth voltage Va is applied to the lines X1, ..., Xm in accordance with the scan pulse to select a discharge cell to be turned on. When the scan pulse and the display data signal start to be applied, negative wall charges accumulate near the scan electrode Y, and positive wall charges accumulate near the sustain electrode X, as shown in FIG. 14C. After the discharge is started and the address discharge is performed, as shown in FIG. 14D, positive wall charges are accumulated near the scan electrode Y, and negative wall charges are accumulated near the sustain electrode X. As shown in FIG.

In the sustain period PS, a sustain pulse having an alternating positive first voltage Vs and a negative first voltage -Vs is applied to the scan electrode lines Y1, ..., Yn. The ground voltage Vg is applied to the electrode lines X1..., Xm.

First, when the first positive voltage Vs is applied, the positive wall charge near the scan electrode Y, the negative wall charge near the sustain electrode X, and the first applied to the scan electrode Y are applied. The sustain discharge is started by one voltage Vs and the ground voltage Vg applied to the sustain electrode X. The sustain discharge causes the discharge cell to be discharged in the vicinity of the scan electrode Y as shown in Fig. 14E. The wall voltage of the polarity and the wall voltage of the positive polarity are accumulated in the vicinity of the sustain electrode (X).

Next, when the negative first voltage (-Vs) is applied, the negative wall charges near the scan electrode Y, the negative wall charges near the sustain electrode X, and the scan electrode Y The sustain discharge is initiated by the first negative voltage (-Vs) applied to the negative electrode) and the ground voltage (Vg) applied to the sustain electrode (X). The sustain discharge is shown in FIG. 14F by the sustain discharge. As a result, the positive wall voltage near the scan electrode Y and the negative wall voltage near the sustain electrode X are accumulated.

On the other hand, the magnitude of the fifth voltage Vx is preferably equal to the magnitude of the eighth voltage Va. In addition, the magnitude of the fourth voltage Vnf is equal to the magnitude of the first voltage Vs, and the magnitude of the seventh voltage Vscl is greater than the magnitude of the fourth voltage Vnf. A power supply device (not shown) for supplying power to each driving device of the plasma display panel shown in FIG. 11 increases manufacturing costs as power levels vary. Therefore, if the plasma display panel is driven while simplifying the applied power level, manufacturing cost can be reduced. According to the present invention, while the reset discharge and the address discharge are performed, the magnitude of the eighth voltage Va and the magnitude of the fifth voltage Vx are the same, and at the same time, the magnitude of the fourth voltage Vnf and the first voltage are the same. It is preferable that the magnitude of Vs is the same and that the magnitude of the seventh voltage Vscl is greater than the magnitude of the fourth voltage Vnf.

FIG. 13 is a timing diagram illustrating another embodiment of a driving signal for driving the plasma display panel of FIG. 6 as a driving method of the present invention.

The drive signal shown in FIG. 13 is similar to the drive signal shown in FIG. Only the differences from FIG. 12 are described below.

The maintenance pulse in FIG. 13 shows a difference from FIG. In the sustain pulse shown in FIG. 12, the first positive voltage Vs and the first negative voltage −Vs of the negative polarity are alternately applied to the scan electrode lines Y1,..., And Yn. The sustain pulse shown is alternately applied with the first positive voltage Vs and the first negative voltage −Vs to the scan electrode lines Y1,..., And Yn. An intermediate voltage is further applied to the ground voltage Vg between Vs) and the first negative voltage. As shown in FIG. 12, when the sustain pulse is applied alternately with the first positive voltage Vs and the first negative voltage −Vs, the displacement current is generated by the voltage change, which is proportional to the voltage change. That is, a displacement current is generated for a change of 2Vs voltage, which may increase power consumption. Therefore, it is desirable to reduce the voltage change when the sustain pulse is applied, which is a middle voltage between the positive first voltage Vs and the negative first voltage (-Vs) as shown in FIG. 13. By further applying, it can be realized by setting the voltage change to Vs. Therefore, power consumption can be reduced compared to FIG.

According to the present invention as described above, the following effects can be obtained.

First, in the structure of the plasma display panel to which the driving method of the present invention is applied, first and second discharge electrodes are formed in the partition wall facing both sides of the discharge cell, and discharge is started from neighboring both sides to increase the discharge volume. In addition, discharge efficiency and brightness are improved, low voltage driving is possible, and double-sided light emission is also possible.

Secondly, compared with the conventional driving device, the configuration is simple, and manufacturing cost is reduced.

Third, the power level applied to the first discharge electrode (scanning electrode) and the second discharge electrode (holding electrode) is simplified, thereby reducing the manufacturing cost.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (5)

A first substrate and a second substrate disposed to face each other; A partition wall disposed between the first substrate and the second substrate and defining discharge cells together with the first substrate and the second substrate; First discharge electrodes facing each other toward the inside of the discharge cell and extending in one direction; Second discharge electrodes facing each other toward the inside of the discharge cell in a direction crossing the direction in which the first discharge electrodes face each other, and extending to cross the direction in which the first discharge electrodes extend; A phosphor layer disposed in the discharge cell; And a discharge gas in the discharge cell. In the reset period in which the discharge cells are initialized, a reset pulse consisting of a rising ramp pulse and a falling ramp pulse is applied, and a scan pulse and a display data signal are applied in an address period in which discharge cells to be turned on among the discharge cells are selected. And a sustain pulse is applied during a sustain period in which the sustain discharge is performed in the selected discharge cell. The method of claim 1, During the reset period, the first discharge electrodes have rising ramp pulses that rise from the first positive voltage to the second voltage and finally reach the third voltage, and are lowered from the first voltage to finally the negative voltage. A falling ramp pulse reaching a voltage of 4 is applied, and a fifth voltage having a positive polarity is applied to the second discharge electrodes while the falling ramp pulse is applied; During the address period, a scanning pulse having a seventh voltage of negative polarity is sequentially applied to the first discharge electrodes, and a scanning eighth of positive polarity is applied to the second discharge electrodes in accordance with the scanning pulse. A display data signal having a voltage is applied, And a sustaining pulse having a first positive voltage and a first negative voltage alternately applied to the first discharge electrodes during the sustain period. The method of claim 2, The magnitude of the fifth voltage is the same as the magnitude of the eighth voltage. The method of claim 3, The magnitude of the fourth voltage is equal to the magnitude of the first voltage, and the magnitude of the seventh voltage is greater than the magnitude of the fourth voltage. The method of claim 4, wherein And the sustain pulse further has a ground voltage which is an intermediate voltage between the first positive voltage and the first negative voltage.

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