KR20100127600A - Plasma display apparatus - Google Patents

Abstract

PURPOSE: A plasma display device is provided to simplify the structure of a driving board by electrically interlinking a power supply part and a driving board through a connection board. CONSTITUTION: A plasma display panel(100) includes an electrode. A frame(500) is arranged in the rear side of the plasma display panel. A power supply part(400) is arranged in the frame. The power supply part generates a power supply voltage. A driving board(110) supplies a driving signal to the electrode. A connection board(410) is arranged between the power supply part and the driving board.

Description

Plasma Display Apparatus {Plasma Display Apparatus}

The present invention relates to a plasma display device.

The plasma display apparatus includes a plasma display panel.

The plasma display panel includes a phosphor layer formed in a discharge cell divided by a partition wall, and also includes a plurality of electrodes.

When the drive signal is supplied to the electrode of the plasma display panel, the discharge is generated by the drive signal supplied in the discharge cell. Here, when discharged by a drive signal in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the phosphor formed in the discharge cell to emit visible light. Generate. The visible light displays an image on the screen of the plasma display panel.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plasma display apparatus which simplifies the structure of a driving board by improving the structure of the driving board disposed on the rear surface of a frame.

A plasma display device according to the present invention includes a plasma display panel including an electrode, a frame disposed on a rear surface of the plasma display panel, a power supply unit disposed on the frame and generating a power voltage; A driving board for supplying a driving signal to the electrode and a connection disposed between the power supply unit and the driving board to supply a power voltage generated by the power supply unit to the driving board, wherein at least one capacitor is disposed. It may include a board.

In addition, the capacitor may include a sustain capacitor storing the sustain voltage Vs and an Energy Recovery capacitor storing the voltage recovered from the electrode.

In addition, the capacitor may be disposed in parallel with the driving board.

In addition, the connection board may be arranged to cross the driving board.

In addition, the connection board may be arranged in parallel with the driving board.

In addition, the capacitor may be arranged in parallel with the connection board.

In addition, a hole is formed in the connection board, and the capacitor may be located in the hole.

In addition, another plasma display apparatus according to the present invention includes a plasma display panel including a scan electrode and a sustain electrode parallel to each other, and an address electrode crossing the scan electrode and the sustain electrode, and a power supply unit disposed in the frame and generating a power voltage ( A power supply unit, a scan driving board for supplying driving signals to the scan electrodes, a sustain driving board for supplying driving signals to the sustain electrodes, and a power supply unit and the scan driving board. The power supply unit generates a power supply voltage to the scan driving board, and is disposed between a first connection board on which at least one capacitor is disposed and between the power supply unit and the sustain driving board. Supply the power supply voltage generated by the power supply unit to the sustain drive board, The can includes a second connecting board (Second Connection Board) disposed capacitor (Capacitor).

In addition, the scan driving board and the sustain driving board may each include an energy recovery circuit.

In addition, another plasma display apparatus according to the present invention includes a plasma display panel including a scan electrode and a sustain electrode parallel to each other, and an address electrode crossing the scan electrode and the sustain electrode, and a power supply unit arranged in the frame and generating a power voltage. A power supply unit, a scan driving board for supplying driving signals to the scan electrodes, a sustain driving board for supplying driving signals to the sustain electrodes, and a driving signal for the address electrodes A data driving board disposed between the power supply unit and the scan driving board to supply a power voltage generated by the power supply unit to the scan driving board, wherein at least one capacitor is disposed; 1 The power supply is placed between the first connection board and the power supply unit and the sustain drive board. The power supply voltage generated by the power supply unit is supplied to the sustain driving board, and is disposed between the second connection board on which at least one capacitor is disposed and between the power supply unit and the data driving board. The power supply voltage may be supplied to the data driving board, and may include a third connection board on which at least one capacitor is disposed.

In addition, the scan driving board, the sustain driving board, and the data driving board may each include an energy recovery circuit.

In addition, the number of capacitors disposed on the third connection board may be less than the number of capacitors disposed on at least one of the first connection board and the second connection board.

In the plasma display device according to the present invention, a power supply unit (PSU) and a driving board are electrically connected to each other using a connection board, thereby simplifying the structure of the driving board, thereby reducing manufacturing costs. The thickness of the plasma display device can be reduced.

Hereinafter, a plasma display device according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram for explaining a configuration of a plasma display device.

Referring to FIG. 1, the plasma display apparatus may include a plasma display panel 100 and a driver 110.

The plasma display panel 100 may include scan electrodes Y1 to Yn and sustain electrodes Z1 to Zn that are parallel to each other, and may include address electrodes X1 to Xm that cross the scan electrode and the sustain electrode. In addition, the plasma display panel 100 may implement an image in a frame including a plurality of subfields.

The driver 110 may supply a driving signal to at least one of a scan electrode, a sustain electrode, and an address electrode of the plasma display panel 100 to implement an image on the screen of the plasma display panel 100.

2 is a diagram for explaining the structure of a plasma display panel.

Referring to FIG. 2, the plasma display panel 100 includes a front substrate 201 in which scan electrodes 202 and Y and sustain electrodes 203 and Z are parallel to each other, and scan electrodes 202 and Y and a sustain electrode ( The back substrate 211 on which the address electrodes 213 and X intersect with 203 and Z may be formed.

On the front substrate 201 where the scan electrodes 202 and Y and the sustain electrodes 203 and Z are formed, the discharge currents of the scan electrodes 202 and Y and the sustain electrodes 203 and Z are limited and the scan electrodes 202 and Y are restricted. ) And an upper dielectric layer 204 may be arranged to insulate between the sustain electrodes 203 and Z.

A protective layer 205 may be formed on the front substrate 201 where the upper dielectric layer 204 is formed to facilitate discharge conditions. The protective layer 205 may include a material having a high secondary electron emission coefficient, such as magnesium oxide (MgO) material.

The address electrodes 213 and X are formed on the rear substrate 211, and the address electrodes 213 and X are covered on the upper side of the rear substrate 211 on which the address electrodes 213 and X are formed. A lower dielectric layer 215 may be formed that insulates X).

On top of the lower dielectric layer 215, a partition space 212, such as a stripe type, a well type, a delta type, a honeycomb type, etc., is formed on the discharge space, that is, to partition the discharge cells. Can be. Accordingly, the first discharge cell emitting red (R) light, the second discharge cell emitting blue (B) light, and the green (Green) light between the front substrate 201 and the rear substrate 211. : G) A third discharge cell or the like that emits light can be formed.

The partition 212 may include a first partition 212b and a second partition 212a, and a height of the first partition 212b and a height of the second partition 212a may be different from each other.

In the discharge cell, the address electrode 213 may cross the scan electrode 202 and the sustain electrode 203. That is, the discharge cell is formed at the point where the address electrode 213 crosses the scan electrode 202 and the sustain electrode 203.

A predetermined discharge gas may be filled in the discharge cell partitioned by the partition wall 212.

In addition, a phosphor layer 214 that emits visible light for displaying an image during address discharge may be formed in the discharge cell partitioned by the partition wall 212. For example, a first phosphor layer that generates red light, a second phosphor layer that generates blue light, and a third phosphor layer that generates green light may be formed.

In addition, the address electrode 213 formed on the rear substrate 211 may have substantially the same width or thickness, but the width or thickness inside the discharge cell may be different from the width or thickness outside the discharge cell. . For example, the width or thickness inside the discharge cell may be wider or thicker than that outside the discharge cell.

When a predetermined signal is supplied to at least one of the scan electrode 202, the sustain electrode 203, and the address electrode 213, discharge may occur in the discharge cell. As such, when discharge is generated in the discharge cell, ultraviolet rays may be generated by the discharge gas filled in the discharge cell, and the ultraviolet rays may be irradiated onto the phosphor particles of the phosphor layer 214. Then, a predetermined image may be displayed on the screen of the plasma display panel 100 by the phosphor particles irradiated with ultraviolet rays to emit visible light.

3 is a view for explaining a driving waveform of the plasma display device. The driving waveform to be described below is supplied by the driving unit 110 of FIG. 1.

Referring to FIG. 3, in the reset period RP for initializing at least one subfield among a plurality of subfields of a frame, the reset signal RS is applied to the scan electrode Y. Can supply Here, the reset signal RS may include a rising ramp signal (Ramp-Up: RU) in which the voltage gradually rises and a falling ramp signal (Ramp-Down: RD) in which the voltage gradually falls.

For example, the rising ramp signal RU may be supplied to the scan electrode in the setup period SU of the reset period, and the falling ramp signal RD may be supplied to the scan electrode in the setdown period SD after the setup period. .

When the rising ramp signal is supplied to the scan electrode, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. By this setup discharge, the distribution of wall charges can be uniform in the discharge cells.

After the rising ramp signal is supplied, when the falling ramp signal is supplied to the scan electrode, a weak erase discharge, that is, a setdown discharge, occurs in the discharge cell. By this set-down discharge, wall charges such that address discharge can be stably generated can be uniformly retained in the discharge cells.

In the address period AP after the reset period, the scan reference signal Ybias having a voltage higher than the lowest voltage of the falling ramp signal may be supplied to the scan electrode.

In addition, in the address period, the scan signal Sc that falls from the voltage of the scan reference signal Ybias may be supplied to the scan electrode.

Meanwhile, the pulse width of the scan signal supplied to the scan electrode in the address period of at least one subfield may be different from the pulse width of the scan signal of another subfield. For example, the width of the scan signal in the subfield located later in time may be smaller than the width of the scan signal in the preceding subfield. In addition, the reduction of the scan signal width according to the arrangement order of the subfields can be made gradually, such as 2.6 Hz (microseconds), 2.3 Hz, 2.1 Hz, 1.9 Hz, or 2.6 Hz, 2.3 Hz, 2.3 Hz, 2.1 Hz. .... 1.9 ㎲, 1.9 ㎲ and so on.

As such, when the scan signal is supplied to the scan electrode, the data signal Dt may be supplied to the address electrode X corresponding to the scan signal.

When the scan signal and the data signal are supplied, an address discharge may be generated in the discharge cell to which the data signal is supplied while the voltage difference between the scan signal and the data signal and the wall voltage generated by the wall charges generated in the reset period are added. .

In addition, the sustain reference signal Zbias signal may be supplied to the sustain electrode in the address period in which the address discharge occurs so that the address discharge is effectively generated between the scan electrode and the address electrode.

In the sustain period SP after the address period, the sustain signal SUS may be alternately supplied to the scan electrode and the sustain electrode.

When such a sustain signal is supplied, the discharge cell selected by the address discharge is added with the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal, and a sustain discharge, i.e., display between the scan electrode and the sustain electrode when the sustain signal is supplied. Discharge may occur.

4-10 is a figure for demonstrating the structure of a drive part. The description of the data driver board will be omitted here.

Referring to FIG. 4, the metal frame Frame 500 is disposed on the rear surface of the plasma display panel 100, and the drive board 110, the power supply unit PSU, 400, a connection board 410 may be disposed.

The power supply unit 400 may generate a power supply voltage required for driving the plasma display panel 100, for example, a sustain voltage Vs and a data voltage Va. The power supply unit 400 may include a fourth connector 430 for electrical connection with the connection board 410.

The driving board 110 uses a power supply voltage supplied from the power supply unit 400 to drive signals, for example, a sustain signal SUS and a data signal Dt, to the scan electrode Y and the sustain electrode Z. Sc), the reset signal RS and the like can be supplied. In FIG. 4, the driving board 110 may supply a driving signal to the scan electrode Y and also supply the driving signal to the sustain electrode Z. The driving board 110 may be referred to as an integrated driving board.

In addition, a first connector 530 may be disposed on the driving board 110. In addition, a first flexible substrate 520 such as a flexible printed circuit (FPC) may be connected between the first connector 540 and the scan electrode Y of the plasma display panel 100, and thus the driving board 110. And the scan electrode may be electrically connected.

In addition, a third connector 420 for electrical connection with the connection board 410 may be further disposed on the driving board 110.

In addition, it is possible to further arrange the auxiliary board (Auxiliary Board, 510). In addition, the cable 130 is disposed between the auxiliary board 510 and the driving board 110, it is possible to electrically connect the auxiliary board 510 and the driving board 110.

Here, the cable 130 may serve to transmit a driving signal generated from the driving board 110 to the sustain electrode Z.

In addition, a second connector 550 may be disposed on the auxiliary board 510. In addition, the second flexible substrate 540 may be connected between the second connector 550 and the sustain electrode Z of the plasma display panel 100, and thus the auxiliary board 510 and the sustain electrode Z may be electrically connected. Can be connected.

Here, the auxiliary board 510 does not generate a driving signal to be supplied to the sustain electrode, and may serve to transfer the driving signal generated from the driving board 110 to the sustain electrode Z. Accordingly, the switching element may not be disposed on the auxiliary board 510.

Considering that the switching element is not disposed on the auxiliary board 510, the auxiliary board 510 may be omitted.

The connection board 410 may be disposed between the power supply unit 400 and the driving board 110 to supply the power voltage generated by the power supply unit 400 to the driving board 110. For example, the connection board 410 is connected to the third connector 420 of the driving board 110 and the fourth connector 430 of the power supply unit 400 to connect the driving board 110 and the power supply unit 400. Can be electrically connected

Meanwhile, the driving board 110 may include an energy recovery circuit 700 as shown in FIG. 5. The energy recovery circuit 700 may supply a sustain signal to the scan electrode Y and the sustain electrode Z and recover voltages of the scan electrode and the sustain electrode. In FIG. 5, only an energy recovery circuit of Weber type is described as an example, but a Sakai type energy recovery circuit may also be applied to the present invention.

The energy recovery circuit 700 includes a first capacitor C1, a first switch S1, a second switch S2, a first inductor L1, a third switch S3, and a fourth switch. It may include a switch (S4).

The voltage of the scan electrode Y or the sustain electrode Z may be recovered and stored in the first capacitor C1, and the voltage stored in the first capacitor C1 may be supplied to the sustain electrode Z. The first capacitor C1 may be referred to as an energy recovery capacitor (ER-Cap).

The first inductor L1 may be disposed between the first capacitor C1 and the scan electrode Y or the sustain electrode Z. The first inductor L1 generates LC resonance when the voltage stored in the first capacitor C1 is supplied to the scan electrode or the sustain electrode and when the voltage of the scan electrode or the sustain electrode is recovered to the first capacitor C1. You can.

The first switch S1 and the second switch S2 may be arranged in parallel between the first inductor L1 and the first capacitor C1. That is, the first switch S1 and the second switch S2 may be arranged in parallel between the first node n1 and the second node n2.

The first switch S1 may supply a voltage stored in the first capacitor C1 to the scan electrode or the sustain electrode in the rising period of the sustain signal SUS through a predetermined switching operation.

The second switch S2 may recover the voltage of the scan electrode or the sustain electrode to the first capacitor C1 during the falling period of the sustain signal SUS through a predetermined switching operation.

The third switch S3 may be disposed between the sustain electrode and the sustain voltage source for supplying the sustain voltage Vs. That is, the third switch S3 is disposed between the third node n3 and the sustain voltage source. Here, the third node n3 is a node between the first inductor L1 and the second inductor L2.

The third switch S3 can supply the sustain voltage Vs to the scan electrode or the sustain electrode through a predetermined switching operation.

The fourth switch S4 may be disposed between the scan electrode or the sustain electrode and the ground. That is, the fourth switch S4 is disposed between the third node n3 and the ground.

The fourth switch S4 can supply the ground level GND voltage to the scan electrode or the sustain electrode through a predetermined switching operation.

In addition, the driving board 110 may include a sustain capacitor C2 that stores the sustain voltage Vs as shown in FIG. 5. The sustain capacitor C2 can stably supply the sustain voltage Vs by storing the sustain voltage Vs.

In addition, at least one capacitor 600 may be disposed on the connection board 410. For example, as shown in FIG. 6, a plurality of capacitors 600 may be disposed in the connection board 410 in parallel with the connection board 410.

In order to arrange the capacitor 600 in parallel with the connection board 410, the grid 600 of the capacitor 600 may be bent to have a shape in which the capacitor 600 is laid on the connection board 410. In this case, the side of the capacitor 600 may contact the connection board 410.

In addition, the connection board 410 may include a first pad electrode 411 and a second pad electrode 412 for electrical connection with the power supply unit 400 or the driving board 110.

Here, the first pad electrode 411 may be connected to the fourth connector 430, and the second pad electrode 412 may be connected to the third connector 420.

The capacitor 600 may include a sustain capacitor (C2 of FIG. 5) that stores the sustain voltage Vs and an energy recovery (C1 of FIG. 5) capacitor that stores the voltage recovered from the scan electrode or the sustain electrode.

Since the sustain capacitor stores the sustain voltage Vs supplied by the power supply unit 400 as in the case of FIG. 5, the sustain capacitor forms a path for supplying the power voltage from the power supply unit 400 to the driving board 110. In the case where the connection board 410 is disposed, the configuration of the driving circuit 110 may be more simplified.

As such, when the driving board 110 and the power supply unit 400 are electrically connected by using the connection board 410 on which the at least one capacitor 600 is disposed, the driving circuit 110 may be simplified.

If, as shown in Figure 7, let us assume the case of using the cable 620 to electrically connect the drive board 110 and the power supply unit 400.

In this case, as the cable 620 is additionally used, the manufacturing cost may increase.

In addition, since both the sustain capacitor and the energy recovery capacitor should be installed on the driving board 110, the manufacturing cost may be further increased by increasing the size of the driving board 110. For example, the cost of manufacturing one large first board may be higher than the cost of manufacturing two second boards one half the size of the first board.

On the other hand, as shown in the present invention by using the connection board 410 to electrically connect the drive board 110 and the power supply unit 400, and also to arrange at least one capacitor 600 on the connection board 410. In this case, since the driving circuit 110 can be simplified, the manufacturing cost can be lowered.

Meanwhile, the plasma display apparatus implements an image by generating a discharge in a discharge cell by using a high voltage driving signal. In addition, a method of recovering an invalid voltage of the scan electrode or the sustain electrode in the sustain period and supplying the recovered voltage to the scan electrode or the sustain electrode again.

Accordingly, the plasma display device needs to use a capacitor having a relatively high capacity compared to other image display devices such as a liquid crystal display panel (LCD). In addition, as the capacity of the capacitor increases, its size also increases.

Accordingly, there is a possibility that the plasma display device is greatly increased in thickness due to the use of a high capacitance capacitor.

On the other hand, when the high-capacity sustain capacitor and the energy recovery capacitor are disposed on the connection board 410 as in the present invention, there is a space allowance for placing a large capacitor, whereby the high-capacity capacitor Excessive increase in the thickness of the plasma display apparatus can be suppressed.

In addition, as shown in FIG. 8, the capacitor 600 disposed on the connection board 410 may be disposed to be parallel to the driving board 110. In this case, the thickness of the plasma display device can be further reduced.

In addition, the connection board 410 may be disposed in parallel with the driving board 110.

Alternatively, as shown in FIG. 9, a hole 900 may be formed in the connection board 410, and the capacitor 600 may be located in the hole 900.

Capacitor 600 of high capacity may have a diameter R of its cross section thicker than a thickness t of connection board 410.

In addition, when the hole 900 is formed in the connection board 410, and the capacitor 600 is disposed in the hole 900, as shown in FIG. 9, the capacitor 600 is d2 than the bottom of the connection board 410. It may protrude further and protrude further by d1 than the upper surface of the connection board 410. In such a structure, the thickness of the plasma display device can be further reduced.

Meanwhile, as in the case of FIG. 10, the connection board 410 may be disposed to cross the driving board 110.

For example, first and second pad electrodes 411 and 412 are disposed on side surfaces of the connection board 410, and the first and second pad electrodes 411 and 412 are disposed on an upper surface of the power supply unit 400. The connection board 410 and the driving board 110 may be intersected by being vertically connected to the fourth connector 430 and the third connector 420 disposed on the upper surface of the driving board 110.

In this structure, it may be desirable to arrange the capacitor 600 to cross the connection board 410 so that the capacitor 600 is arranged in parallel with the driving board 110. Accordingly, even if the capacitor 600 of high capacitance is used, the thickness of the plasma display device may be excessively suppressed.

11-14 is a figure for demonstrating the further structure of the drive part. Hereinafter, overlapping descriptions of the parts described above in detail will be omitted.

Referring to FIG. 11, a driving board may be divided into a scan driving board 1130 and a sustain driving board 1140.

The scan driving board 1130 may supply a driving signal to the scan electrode (Y). In addition, the sustain driving board 1140 may supply a driving signal to the sustain electrode Z.

In this configuration, the scan driving board 1130 and the sustain driving board 1140 may each include an energy recovery circuit.

The first connector 530 may be disposed on the scan driving board 1130. In addition, the first flexible substrate 520 may be connected between the first connector 540 and the scan electrode Y of the plasma display panel 100. Accordingly, the scan driving board 1130 and the scan electrode Y may be connected to each other. Can be electrically connected.

In addition, the scan driving board 1130 may further include a third connector 420 for electrical connection with the first connection board 410.

The second connector 550 may be disposed on the sustain driving board 1140. In addition, the second flexible substrate 540 may be connected between the second connector 550 and the sustain electrode Z of the plasma display panel 100. Accordingly, the sustain drive board 1140 and the sustain electrode Z may be connected to each other. Can be electrically connected.

In addition, a fifth connector 1120 for electrical connection with the second connection board 1100 may be further disposed on the sustain driving board 1140.

In the power supply unit 400, a fourth connector 430 may be disposed for electrical connection with the first connection board 410, and a sixth connector 1110 for connection with the second connection board 1100. ) May be arranged.

The second connection board 1100 may be disposed between the power supply unit 400 and the sustain drive board 1140 to supply the power voltage generated by the power supply unit 400 to the sustain drive board 1140.

Since the scan driving board 1130 supplies a driving signal to the scan electrode, and the sustain driving board 1140 must supply a driving signal to the sustain electrode, each of the first and second connection boards 410 and 1100 has at least one capacitor. It may be desirable to be.

Alternatively, as shown in FIG. 12, a data driving board 1200 for supplying a driving signal to the address electrode X may be disposed in the frame 500.

In addition, the data driving board 1200 may include an energy recovery circuit.

As such, when the data driving board 1200 includes an energy recovery circuit, as shown in FIG. 13, the rising period d1 and the maximum voltage Va at which the data signal Dt gradually rises are maintained. It may include a sustain period d2 and a descent period d3 in which the voltage gradually falls. In other words, the data signal Dt is supplied using an energy recovery circuit.

The seventh connector 1230 for electrical connection with the third connection board 1210 may be disposed on the data driving board 1200. In addition, the data driving board 1200 and the data electrode X may be electrically connected.

The power supply unit 400 may include an eighth connector Eighth 1220 for electrical connection with the third connection board 1210.

The third connection board 1210 may be connected between the seventh connector 1230 and the eighth connector 1220 to transmit the power voltage generated by the power supply unit 400 to the data driving board 1200.

Meanwhile, the voltage Vs of the driving signal supplied to the scan electrode and the sustain electrode, for example, the sustain signal, may be a high voltage driving signal compared to the driving signal supplied to the address electrode, for example, the data signal Dt.

Therefore, the capacitance of the capacitor required to supply the driving signal to the scan electrode or the sustain electrode may be larger than that of the capacitor required to supply the driving signal to the address electrode.

Accordingly, the number of capacitors 600 disposed on the first connection board 410 or the second connection board 1100 as in the case of FIG. 14A is the third connection board ( It may be desirable to have more than the number of capacitors 600 disposed in 1200.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

1 is a diagram for explaining the configuration of a plasma display device;

2 is a diagram for explaining the structure of a plasma display panel;

3 is a view for explaining a driving waveform of the plasma display device;

4-10 is a figure for demonstrating the structure of a drive part.

11-14 is a figure for demonstrating the further structure of a drive part.

Claims (12)

A plasma display panel including an electrode; A frame disposed on a rear surface of the plasma display panel; A power supply unit disposed in the frame and generating a power voltage; A driving board supplying a driving signal to the electrode; And A connection board disposed between the power supply unit and the driving board to supply a power voltage generated by the power supply unit to the driving board, wherein at least one capacitor is disposed; Plasma display device comprising a. The method of claim 1, The capacitor includes a sustain capacitor for storing a sustain voltage (Vs) and an energy recovery capacitor for storing a voltage recovered from the electrode. The method of claim 1, And the capacitor is disposed in parallel with the driving board. The method of claim 1, And the connection board is disposed to cross the driving board. The method of claim 1, The connecting board is disposed in parallel with the drive board. The method of claim 5, And the capacitor is disposed in parallel with the connection board. The method of claim 6, A hole is formed in the connection board, and the capacitor is located in the hole. A plasma display panel including parallel scan electrodes and a sustain electrode and an address electrode crossing the scan electrode and the sustain electrode; A power supply unit disposed in the frame and generating a power voltage; A scan driving board supplying a driving signal to the scan electrode; A sustain driving board supplying a driving signal to the sustain electrode; A first connection board disposed between the power supply unit and the scan driving board to supply a power voltage generated by the power supply unit to the scan driving board, wherein at least one capacitor is disposed; ; And A second connection board disposed between the power supply unit and the sustain driving board to supply the power voltage generated by the power supply unit to the sustain driving board, and at least one capacitor disposed therein; ; Plasma display device comprising a. The method of claim 8, And the scan driving board and the sustain driving board each include an energy recovery circuit. A plasma display panel including parallel scan electrodes and a sustain electrode and an address electrode crossing the scan electrode and the sustain electrode; A power supply unit disposed in the frame and generating a power voltage; A scan driving board supplying a driving signal to the scan electrode; A sustain driving board for supplying a driving signal to the sustain electrode; A data driving board supplying a driving signal to the address electrode; A first connection board disposed between the power supply unit and the scan driving board to supply a power voltage generated by the power supply unit to the scan driving board, wherein at least one capacitor is disposed; ; A second connection board disposed between the power supply unit and the sustain driving board to supply the power voltage generated by the power supply unit to the sustain driving board, and at least one capacitor disposed therein; ; And A third connection board disposed between the power supply unit and the data driving board to supply a power voltage generated by the power supply unit to the data driving board, and having at least one capacitor disposed thereon; ; Plasma display device comprising a. The method of claim 10, The scan driving board, the sustain driving board and the data driving board each include an energy recovery circuit. The method of claim 10, The number of capacitors disposed on the third connection board is less than the number of capacitors disposed on at least one of the first connection board and the second connection board.

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