JP2000293135A - Driving device for plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a circuit constitution, and to reduce costs by allowing driving currents by a sustain driver to flow through the same passage at the time of charging and discharging in a scan driver. SOLUTION: A scan driver users a PMOS-FET or NMOS-FET as a switching element S21, and uses the NMOS-FET as a switching element S22, and obtains a connection point as an output to a line electrode Yj by the serial connection. Also, driving currents by a second sustain driver are allowed to flow through a passage constituted of the switching elements S21 and a diode D5 which are connected in parallel in the scan driver at the time of charging and discharging. Thus, the driving currents by the sustain driver are allowed to flow through the same passage at the time of charging and discharging in the scan driver. Thus, the circuit constitution can be simplified, and cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a matrix type plasma display panel (PDP) driving apparatus.

[0002]

2. Description of the Related Art FIG. 5 shows a matrix display type PDP1.
FIG. 2 is a diagram illustrating a configuration of a PDP driving device including the above. In FIG. 5, row electrodes Y _{1 to} Y _n and row electrodes X ₁ to X _n forming a row electrode pair corresponding to a display line are provided on the PDP 1 in a pair of X and Y.
X _n are formed. Furthermore, the column electrodes D ₁ to D _m to form a orthogonal to the row electrode pairs across the dielectric layer and a discharge space (not shown) and a discharge cell at each intersection is formed. The address driver 2 selectively generates wall charges for each discharge cell based on pixel data for each discharge cell based on a video signal, and generates a pixel data pulse for setting a light emitting discharge cell or a non-light emitting discharge cell. and is applied to the column electrodes D ₁ to D _m in one display line by line it.

The X-row electrode driver 3 includes a reset pulse generating section and a sustain driver section for generating a sustain discharge pulse. A reset pulse for initializing the amount of residual wall charge of each discharge cell, discharge light emission of a light emitting discharge cell. , A sustaining discharge pulse is generated for maintaining the above-mentioned row electrode X _1.
~ _Xn . The Y row electrode driver 4 includes a reset pulse generator, a sustain driver that generates a sustain discharge pulse, and a scan driver that generates a scan pulse. A reset pulse for initializing the residual wall charge of each discharge cell, sustain pulse for sustaining a discharge light emission of the light-emitting discharge cell, and generates a scan pulse to the set of light-emitting discharge cell or non-light emitting discharge cell, and applies to the row electrodes Y ₁ to Y _n.

The above-described scan driver section has a configuration in which two switching elements are connected in series and the connection point is connected to one of a pair of row electrodes (a pair of sustain electrodes), and is maintained by a sustain driver section during a sustain discharge period. The driving current at the time of application of the pulse is supplied to one of the row electrode pairs (Y electrodes) via a switching element provided separately from the switching element of the scan driver unit, so that the circuit scale is large. There was a problem that the cost was high.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and has been developed for a plasma display panel having a low-cost sustain driver and scan driver which has a simplified circuit configuration. It is an object to provide a driving device.

[0006]

According to a first aspect of the present invention, there is provided a plasma display panel comprising a plurality of row electrode pairs and a plurality of row electrode pairs intersecting the row electrode pairs and forming discharge cells at each intersection. A column electrode, a sustain driver that supplies a sustain discharge pulse to one of the row electrode pairs to maintain light emission only in the light emitting cells, and a scan pulse to one of the row electrode pairs to select light emitting cells and non-light emitting cells And a driving driver for driving the plasma display panel, the driving current of the sustain driver in the scan driver flowing through the same path during charging and discharging.

A plasma display panel according to a second aspect of the present invention is the plasma display panel according to the first aspect, wherein the scan driver includes two row electrodes each having one end commonly connected to the other end of the row electrode pair. A switching element, a first potential is applied to the other end of one of the two switching elements when the scan driver operates,
A second potential lower than the first potential and equal to the potential of the scan pulse is applied to the other end of the two switching elements,
When the sustain driver operates, an output of the sustain driver is electrically connected to the other end of one or the other switching element.

According to a third aspect of the present invention, there is provided the plasma display panel according to the second aspect, wherein the path of the driving current is one of the two switching elements and a diode connected in parallel to one of the two switching elements. Alternatively, it is characterized by comprising the other of the two switching elements and a diode connected in parallel thereto.

In the plasma display panel according to the present invention, the scan driver is provided with two switching elements each having one end commonly connected to the other of the row electrode pairs, and a scan driver at the other end of one of the two switching elements. One potential is applied, a second potential lower than the first potential and equal to the potential of the scan pulse is applied to the other end of the two switching elements, and when the sustain driver operates, the output of the sustain driver becomes one or the other. By being configured to be electrically connected to the other end of the switching element,
In the scan driver, the drive current by the sustain driver acts so as to flow on the same path during charging and discharging.

[0010]

FIG. 1 is a diagram showing a configuration of a driving device of a PDP 1 according to a first embodiment of the present invention. FIG.
, The row electrode X _j is the j-th row (one electrode constituting the j-th display line) among the row electrodes X _{1 to} X _n , and the row electrode Y _j is the row electrode Y _{1 to} Y _n And j-th row (the other electrode forming the j-th display line). Paired row electrodes X _j
And between the Y _j acts as a capacitor C _0. The X row electrode driver 3 includes a power supply B1, switching elements S1 to S
4, a first sustain driver including diodes D1 and D2, coils L1 and L2, and a capacitor C1, and a reset pulse generating unit including a resistor R1, a switching element S8, and a power supply B2.

The power supply B1 has a voltage V _s1 (for example, 170 V).
And the power supply B2 outputs the voltage V _r1 (for example, -190 V).
Is output. The positive terminal of the power supply B1 is a switching element S
3 is connected to the connection line 11 to the electrode _Xj , and the negative terminal is connected to the ground. A switching element S4 is connected between the connection line 11 and the ground, and a switching element S4 is connected between the connection line 11 and the ground.
1, a series circuit including a diode D1 and a coil L1, and a series circuit including a coil L2, a diode D2, and a switching element S2 are commonly connected to the ground via a capacitor C1. The diode D1 is connected with the capacitor C1 side as an anode, and the diode D2 is connected with the capacitor C1 side as a cathode. The negative terminal of the power supply B2 is connected to the connection line 11 via the switching element S8 and the resistor R1, and the positive terminal of the power supply B2 is grounded.

The Y electrode driver 4 includes a second sustain driver including a power supply B3, switching elements S11 to S14, diodes D3 and D4, coils L3 and L4, and a capacitor C2, and a reset including a resistor R2, a switching element S16, and a power supply B4. Pulse generator, power supply B6,
The scan driver includes switching elements S21 and S22 and diodes D5 and D6.

The power supply B3 outputs V _s1 (for example, 170V), the power supply B4 outputs a voltage V _r1 (for example, -190V), and the power supply B6 outputs a voltage V _h (for example, 10 to 20V). The positive terminal of the power supply B3 is a switching element S1
3 is connected to the connection line 12 to the switching element 15, and the negative terminal is connected to the ground. A switching element S14 is connected between the connection line 12 and the ground, and a series circuit including the switching element S11, the diode D3 and the coil L3, a coil L4, a diode D4, and a switching circuit are connected between the connection line 12 and the ground. The series circuit including the element S12 is commonly connected to the ground via a capacitor C2. The diode D3 is connected to the capacitor C2 side as an anode, and the diode D4 is connected to the capacitor C1 side as a cathode.

The connection line 12 is connected to the switching element S1
5 is connected to the connection line 13 to the positive terminal of the power supply B6. The negative terminal of the power supply B4 is grounded,
The positive terminal is connected to the connection line 13 via the switching element S16 and the resistor R2. Connection line 13
The (positive terminal of the power supply B6) is connected to the connection line 14 via the switching element S21, and the negative terminal of the power supply B6 is connected to the connection line 14 via the switching element S22. Further, a diode D5 is connected in parallel with the switching element S21, and a diode D6 is connected in parallel with the switching element S22. The diode D5 is connected with the connection line 14 side as an anode, and the diode D6 is connected with the connection line 14 side as a cathode. The above-described switching elements S1 to S4, S8, S11 to S1
4, ON and OFF of S16, S21 and S22 are controlled by a control signal from a control circuit (not shown). The arrow of each switching element in FIG. 1 is a control signal input terminal from the control circuit.

Next, the operation of the driving device for the PDP 1 having such a configuration will be described with reference to the timing chart of FIG. The drive sequence of the PDP 1 includes a reset period, an address period, and a sustain period as one cycle.

First, in the reset period, the switching element 21 of the Y row electrode driver 4 turns on, and at the same time, the switching element 8 of the X row electrode driver 3 and the switching element 16 of the Y row electrode driver 4 turn on. Other switching elements are off during the reset period. When the switching element S8 is turned on, a current flows from the electrode _Xj to the negative terminal of the power supply B2 via the resistor R1 and the switching element 8, and when the switching element S16 is turned on, the current flows from the positive terminal of the power supply B4 to the switching element S1.
6, the electrode Y via the resistor R2 and the switching element S21.
Current flows into _j . Gradually decreased to a reset pulse RP _x becomes the time constant of the potential of the electrode X _j and the capacitor C ₀ and the resistor R1, the potential of the electrode Y _j is gradually increased by the time constant of the capacitor C ₀ and the resistor R1 Reset pulse R
The P _y. This reset pulse RP _x is applied to all the row electrodes X
It is applied simultaneously to the ₁ to X _n, The reset pulse RP _y
It is also simultaneously applied to all the row electrodes Y ₁ to Y _n.

[0017] The simultaneous application of these reset pulses RP _x and RP _y, and discharge-excited simultaneously all the discharge cells of PDP1 charged particles are generated, after termination of the discharge, all the discharge cells dielectric layer Accumulates a predetermined amount of wall charges,
It becomes a light emitting discharge cell state. Switching elements S8 and the switching element S16, and the lapse of a predetermined time after the reset pulse RP _x and RP _y is saturated turned off. Also,
At this time, the switching elements S4, S14 and S15 are turned on, and the electrodes _Xj and _Yj are both grounded. Thus the reset pulse RP _x and RP _y is finished.

Next, the address period starts, and the address driver 2 selectively forms a wall charge for each discharge cell based on a video signal to set a light emitting discharge cell or a non-light emitting discharge cell. generates a DP ₁ to DP _m, is applied to the column electrodes D ₁ to D _m in one display line by line it. As shown in FIG. 2, pixel data pulses DP _j and Dp _{j + 1} are applied to the electrodes Y _j and Y _{j + 1} . The Y electrode driver 4 sequentially applies negative voltage scanning pulses SP to the row electrodes Y _{1 to} Y _n in synchronization with the timings of the pixel data pulse groups DP _{1 to} DP _m .

[0019] For electrode Y _j will be described, switching element S21 is turned off in synchronization with the application of the pixel data pulse DP _j from the address driver 2, the switching element S22 is turned on. Thus, the negative side negative potential electrode Y _j in the scanning pulse SP showing the voltage V _h of the terminal of the power source B6
Is applied. Then, switching element S21 is turned on in synchronization with the completion of the pixel data pulse DP _j from the address driver 2, the switching element S22 is turned off, the electrode Y _j is grounded. Then, the electrode Y _{j + 1}
2, the scanning pulse SP is applied in synchronization with the application of the pixel data pulse DP _{j + 1} from the address driver 2 as in the case of the electrode _Yj .

In the discharge cells belonging to the row electrodes to which the scan pulse is applied, discharge occurs only in the discharge cells to which the positive voltage pixel data pulse is simultaneously applied, and the wall charges are erased. On the other hand, no discharge occurs in a discharge cell to which a scanning pulse is applied but a positive voltage pixel data pulse is not applied at the same time, so that wall charges remain. At this time, the discharge cells in which the wall charges remain remain become light emitting discharge cells, and the discharge cells in which the wall charges have been erased become non-light emitting discharge cells.

Next, a sustain period starts, the switching element S4 is turned off, and the switching element S1 is turned on. Based on the electric charge stored in the capacitor C1, the coil L1, the diode D1, and the switching element S1 are turned on. flows capacitor C ₀ current to the electrode X _j through a charged. At this time, the potential of the electrode X _j by the time constant of the coil L1 and the capacitor C ₀ is increased gradually as shown in FIG. Coil L1 and capacitor C ₀
When a half cycle of the resonance cycle has elapsed, the switching element S1 is turned off and the switching element S3 is turned on. Thereby, the potential of the electrode _Xj is clamped to the potential _Vs1 of the positive terminal of the power supply B1.

[0022] Then after a predetermined time has elapsed, the switching element S3 is turned OFF, by turning on the switching element S2, based on the charge stored in the capacitor C _0, the coil L2, the diode D2 and switching element S2, A current flows through the capacitor C1 through the capacitor C1, and the capacitor C1 is charged. At this time, the potential of the electrode X _j by the time constant of the coil L2 and the capacitor C ₀ decreases gradually as shown in FIG. Coil L2 and capacitor C
_When a half cycle of the resonance cycle due to ₀ has elapsed (when the potential of the electrode _Xj reaches 0 V), the switching element S2 is turned off and the switching element S4 is turned on.

With this operation, the X-row electrode driver 3
Applies a sustain discharge pulse _IPx having a positive voltage as shown in FIG. 2 to the electrode _Xj . Sustain discharge pulse IP _x simultaneously with the ON of the switching element S4 to annihilate, the Y row electrode driver 4, the switching element S11 is turned on, and turns off the switching element S14. Switching element S1
4 is on, the potential of the electrode _Yj is at the ground potential of 0 V, but when the switching element S11 is turned on and the switching element S14 is turned off, based on the electric charge stored in the capacitor C2, Coil L
3, the diode D3, the switching element S11, switching element S15, the current through the switching element S21 is flowing capacitor C ₀ is charged to the electrode Y _j. At this time, the potential of the electrode Y _j by the time constant of the coil L3 and the capacitor C ₀ is increased gradually as shown in FIG.

[0024] When the half cycle of the resonant period by the coil L3 and the capacitor C ₀ has elapsed, the switching element S1
1 is turned off, and the switching element S13 is turned on.
Thus, the potential of the electrode Y _j is clamped to the potential V _s1 of the positive terminal of the power source B3. After a lapse of a predetermined time, the switching element S13 is turned off, and the switching element S13 is turned off.
By turning on the 12, based on the charge stored in the capacitor C _0, the diode D5, flows to the switching element S15, the coil L4, the diode D4, and the capacitor C2 current through the switching element S12, capacitor C2 Is charged. At this time, the potential of the electrode X _j by the time constant of the coil L4 and the capacitor C ₀ decreases gradually as shown in FIG. The switching element S12 is turned off when the half period of the resonance cycle by the coil L4 and the capacitor C ₀ has elapsed (when the potential of the electrode Y _j reaches 0V), and turns on the switching element S14.

With this operation, the Y electrode driver 4
The sustain discharge pulse IP _y positive voltage as shown in FIG. 2 is applied to the electrode Y _j. Thus, in the sustain period, the sustain discharge pulse IP _x and sustain discharge pulse IP _y are alternately generated and alternately applied to the row electrodes X ₁ to X _n and row electrodes Y ₁ to Y _n. As a result, in the light emitting discharge cells in which the wall charges remain, the discharge light emission is repeated and the light emitting state is maintained.

The above-described scan driver uses a PMOS-FET or NMOS-FE as the switching element S21.
T, and NMOS-F as the switching element S22.
The connection points are output to the row electrodes _Yj by connecting them in series using ET. Also, the second
The driving current of the sustain driver is configured to flow through a path including the switching element 21 and the diode D5 connected in parallel in the scan driver during charging and discharging.

When the switching element 21 is composed of a MOS-FET, the diode D5 is
It may be configured by an internal parasitic diode. In the above-described first embodiment, the configuration has been described in which the output of the second sustain driver is connected to the positive terminal (the other end of the switching element 21) of the power supply B6 of the scan driver.
The output of the second sustain driver may be connected to the negative terminal (the other end of the switching element 22) of the power supply of the scan driver.

FIG. 3 shows the driving of the PDP 1 having such a configuration.
FIG. 6 shows an apparatus (second embodiment), which is the same as FIG. 1 and FIG.
Portions are indicated using the same reference numerals. P in FIG.
Connected to switching element S15 in DP1 drive
The connection line 13 is connected to the negative terminal of the power supply B6.
Has been continued. Power supply B6 is connected via switching element S21.
Electrode Y_jTo the connection line 14
The negative terminal of the power supply B6 connected to the
The electrode Y via the element S22 _jConnect to connection line 14
Have been. The switching element S21 has a diode D
5 are connected in parallel, and the switching element S22
Has a diode D6 connected in parallel. In addition, Daio
The diode D5 has an anode on the connection line 14 side and a diode D
6 is connected with the connection line 14 side as a cathode.
You.

The positive terminal of the power supply B5 is connected to ground, and the negative terminal thereof is connected to the switching element S17 and the resistor R.
3 to a connection line 13. Power supply B6
Generates a voltage V _off (for example, 10 to 20 V), and the power supply B6 generates a voltage V _h (for example, 140 V). The other configuration is the same as that of the apparatus shown in FIGS. 1 and 5, and the description is omitted.

Next, the operation of the driving device of the PDP 1 having such a configuration will be described with reference to the timing chart of FIG. The drive sequence of the PDP 1 is similar to the drive device of FIG. 2 in that the reset period, the address period, and the sustain period are one cycle.

First, in the reset period, the switching element S8 of the X electrode driver 3 is turned on, and
The switching elements S16 and S22 of the electrode driver 4 are turned on. Other switching elements are off. When the switching element S8 is turned on, a current flows from the electrode _Xj to the negative terminal of the power supply B2 via the resistor R1 and the switching element 8, and when the switching element S16 is turned on, the current flows from the positive terminal of the power supply B4 to the switching element S2.
16, a current flows into the electrode _Yj via the resistor R2 and the switching element S22. The potential of the electrode _Xj is _{equal to} the potential of the capacitor C _0.
Gradually decreased to a reset pulse RP _x becomes the time constant of the resistor R1, the potential of the electrode Y _j is the reset pulse RP _y rises gradually by the time constant of the capacitor C ₀ and the resistor R1. Potential of the reset pulse RP _x is saturated -
Becomes V _r1 voltage, the potential of the reset pulse RP _y is the V _r1 voltage is saturated. The reset pulse RP _x is simultaneously applied to all the row electrodes X ₁ to X _n, the same time is applied to the reset pulse RP _y also all the row electrodes Y ₁ to Y _n.

These reset pulses RP_xAnd RP_ySame
All discharge cells of PDP1 are discharged at once
When excited, charged particles are generated.
A predetermined amount of wall charge is accumulated on the dielectric layer of the discharge cell,
It becomes a light emitting discharge cell state. Switching element S8 and switch
After a predetermined time has passed, the switching element S16 is reset.
Luz RP_xAnd RP_yAfter the saturation, before the end of the reset period
Off. At this time, the switching element S
4, S14 and S15 are turned on, and the electrode X _jAnd Y_jIs
Both are grounded. Thereby, the reset pulse RP_xPassing
And RP_yEnds.

Next, when the address period starts, the switching elements S14 and S15 are turned off, the switching elements S17 and S21 are turned on, and at the same time, the switching element S22 is turned off. Switching element S17
And by turning on the S21, the positive potential (V _h -V _off) is applied to the electrode Y _j. In the address period, the address driver 2 generates pixel data pulses DP _{1 to} DP _m for selectively forming a light emitting discharge cell or a non-light emitting discharge cell by selectively forming wall charges for each discharge cell based on a video signal. and is applied to the column electrodes D ₁ to D _m in one display line by line it. As shown in FIG. 4, pixel data pulses DP _j and Dp _{j + 1} are applied to the electrodes Y _j and Y _{j + 1} .

The switching element S21 is turned off in synchronization with the application of the pixel data pulse DP _j from the address driver 2, the switching element S22 is turned on. As a result, a negative potential indicating the -V _off voltage of the negative terminal of the power supply B5 is applied as the scan pulse SP to the electrode _Yj via the switching element S22. Then, switching element S21 is turned on in synchronization with the completion of the pixel data pulse DP _j from the address driver 2, the switching element S
22 is turned off, the predetermined positive potential to the electrode Y _j (V _h -V
_off ) is applied. Thereafter, 4 also electrode Y _{j + 1}
As shown in ( ₁₎ , the scanning pulse SP is applied in synchronization with the application of the pixel data pulse DP _{j + 1} from the address driver 2 similarly to the electrode _Yj .

In the discharge cells belonging to the row electrodes to which the scan pulse is applied, discharge occurs only in the discharge cells to which the positive voltage pixel data pulse is simultaneously applied, and the wall charges are erased. On the other hand, no discharge occurs in a discharge cell to which a scanning pulse is applied but a positive voltage pixel data pulse is not applied at the same time, so that wall charges remain. At this time, the discharge cells in which the wall charges remain remain become light emitting discharge cells, and the discharge cells in which the wall charges have been erased become non-light emitting discharge cells. When switching from the address period to the sustain period, the switching elements S17 and S2
1 is turned off, and at the same time, the switching elements S14, S1
5 and S22 are turned on. The switching element S4
Remains on.

The operation of the X-row electrode driver 3 during the sustain period is the same as that of the first embodiment shown in FIGS. 1 and 2, and the description of the operation is omitted. As shown, the positive voltage sustain discharge pulse IP _x
Is applied to the electrode _Xj . In the Y-row electrode driver 4, simultaneously with the ON of the switching element S4 to extinguish the sustain pulses IP _x, the switching element S11 is turned on, and turns off the switching element S14. When the switching element S14 is on, the potential of the electrode _Yj is at the ground potential of 0 V. However, when the switching element S11 is turned on and the switching element S14 is turned off, based on the electric charge stored in the capacitor C2. Te, the coil L3, diode D3, the switching element S11, switching element S15, the current through the diode D6 is to flow the capacitor C ₀ to the electrode Y _j is charged. At this time, the potential of the electrode Y _j by the time constant of the coil L3 and the capacitor C ₀ is increased gradually as shown in FIG.

[0037] When the half cycle of the resonant period by the coil L3 and the capacitor C ₀ has elapsed, the switching element S1
1 is turned off, and the switching element S13 is turned on.
Thus, the potential of the electrode Y _j is clamped to the potential V _s1 of the positive terminal of the power source B3. After a lapse of a predetermined time, the switching element S13 is turned off, and the switching element S13 is turned off.
By turning on the 12, based on the charge stored in the capacitor C _0, the switching element S22, switching element S15, the coil L4, the diode D4,
Then, a current flows to the capacitor C2 via the switching element S12, and the capacitor C2 is charged.

At this time, the coil L4 and the capacitor C ₀
Due to the time constant, the potential of the electrode _Xj gradually decreases as shown in FIG. The switching element S12 is turned off when the half period of the resonance cycle by the coil L4 and the capacitor C ₀ has elapsed (when the potential of the electrode Y _j reaches 0V), and turns on the switching element S14. With such an operation, Y-row electrode driver 4 applies the sustain discharge pulse IP _y positive voltage as shown in FIG. 4 to the electrode Y _j. Thus, in the sustain period, the sustain discharge pulse IP _x
And sustain discharge pulse IP _y are alternately generated, the row electrodes X ₁
Alternately applied to the to X _n and row electrodes Y ₁ to Y _n. As a result, in the light emitting discharge cell in which the wall charges remain,
The discharge light emission is repeated, and the light emission state is maintained.

The above-described scan driver uses a PMOS-FET or NMOS-FE as the switching element S21.
T, and NMOS-F as the switching element S22.
The connection points are output to the row electrodes _Yj by connecting them in series using ET. Also, the second
The drive current of the sustain driver is configured to flow through a path including the switching element 22 and the diode D6 connected in parallel in the scan driver during charging and discharging. When the switching element 22 is formed of a MOS-FET, the diode D6 is a MOS-FE.
It may be constituted by a parasitic diode inside T.

[0040]

As described above, according to the present invention, since the drive current of the sustain driver in the scan driver flows through the same path during charging and discharging, the circuit configuration is simplified and the cost is reduced. Can be prevented from increasing.

[Brief description of the drawings]

FIG. 1 is a view showing a configuration of a PDP driving device according to a first embodiment of the present invention.

FIG. 2 is a timing chart showing the operation of the PDP driving device according to the first embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a driving device of a PDP according to a second embodiment of the present invention.

FIG. 4 is a timing chart showing an operation of a PDP driving device according to a second embodiment of the present invention.

FIG. 5 is a diagram showing a configuration of a PDP driving device including a matrix display type PDP in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Plasma display panel 2 ... Address driver 3 ... X row electrode driver 4 ... Y row electrode driver

Claims (3)

[Claims] 1. A plurality of row electrode pairs, a plurality of column electrodes arranged to intersect with the row electrode pairs, and a plurality of column electrodes forming a discharge cell at each intersection, and the row electrode for maintaining light emission only in the light emitting cells. A driving apparatus for a plasma display panel, comprising: a sustain driver that supplies a sustain discharge pulse to one of the pair; and a scan driver that supplies a scan pulse to one of the row electrode pairs to select a light emitting cell and a non-light emitting cell. A driving apparatus for a plasma display panel, wherein a driving current of the sustain driver in the scan driver flows through the same path during charging and discharging. 2. The scan driver has two switching elements each having one end commonly connected to the other of the row electrode pairs, and when the scan driver is operating, the other of the two switching elements is used. A first potential is applied to one end, and a second potential lower than the first potential and equal to the potential of the scan pulse is applied to the other end of the two switching elements, and the sustain driver operates when the sustain driver operates. 2. The driving device for a plasma display panel according to claim 1, wherein an output of said switching element is electrically connected to the other end of said one or other switching element. 3. The path of the driving current includes one of the two switching elements and a diode connected in parallel thereto, or a diode of the other of the two switching elements and a diode connected in parallel thereto. A driving device for a plasma display panel according to claim 2.