KR20090034685A - Plasma display device - Google Patents

Abstract

The present invention relates to a plasma display device.

A plasma display apparatus according to an embodiment of the present invention includes a plasma display panel including a front substrate having scan electrodes and sustain electrodes formed thereon, and a rear substrate having address electrodes disposed to intersect the scan electrodes and sustain electrodes; A heat dissipation frame disposed on a rear surface of the heat dissipation frame and a drive board disposed on a rear surface of the heat dissipation frame, wherein the drive board includes a scan board for supplying a drive signal to the scan electrode, a sustain board for supplying a drive signal to the sustain electrode, and an address; And a data board for supplying a driving signal to the electrodes, wherein the scan board and the sustain board are insulated from the heat dissipation frame, and the scan board and the sustain board are electrically connected by a ground line.

Plasma display device according to an embodiment of the present invention is disposed between the ground voltage source connected to the scan board and the sustain board and the ground voltage source connected to the data board so that the address electrode is floating (floating) during the sustain period, By suppressing discharge, there is an effect of improving driving efficiency and improving stability and reliability.

Description

Plasma Display Apparatus {Plasma Display Apparatus}

The present invention relates to a plasma display device.

The plasma display apparatus may include a plasma display panel having electrodes formed thereon, and a driving board supplying driving signals to the electrodes of the plasma display panel.

In the plasma display panel, a phosphor layer is formed in a discharge cell divided by a partition, and a plurality of electrodes are formed.

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.

An embodiment of the present invention is to provide a plasma display device having a ground separation control unit to float the address electrode during the sustain period, thereby improving the driving efficiency by suppressing the opposite discharge, and improved stability and reliability The purpose is.

A plasma display apparatus according to an embodiment of the present invention includes a plasma display panel including a front substrate having scan electrodes and sustain electrodes formed thereon, and a rear substrate having address electrodes disposed to intersect the scan electrodes and sustain electrodes; A heat dissipation frame disposed on a rear surface of the heat dissipation frame and a drive board disposed on a rear surface of the heat dissipation frame, wherein the drive board includes a scan board for supplying a drive signal to the scan electrode, a sustain board for supplying a drive signal to the sustain electrode, and an address; And a data board for supplying a driving signal to the electrodes, wherein the scan board and the sustain board are insulated from the heat dissipation frame, and the scan board and the sustain board are electrically connected by a ground line.

In addition, the ground voltage of the scan board and the sustain board is different from the ground voltage of the heat radiation frame.

In addition, a ground separation control unit is further disposed between the scan board and the sustain board and the heat dissipation frame to connect the ground of the scan board and the sustain board to the ground of the heat dissipation frame.

In addition, an insulating layer is disposed between the scan board and the sustain board and the heat dissipation frame.

In addition, the plasma display device according to another embodiment of the present invention, the plasma display panel including a front substrate formed with the scan electrode and the sustain electrode, and a rear substrate formed with an address electrode disposed to cross the scan electrode and the sustain electrode, plasma A heat dissipation frame disposed on the back of the display panel and a drive board disposed on the back of the heat dissipation frame, wherein the drive board includes a scan board for supplying a drive signal to the scan electrode and a sustain board for supplying a drive signal to the sustain electrode. And a data board for supplying a drive signal to the address electrode, wherein the data board and the heat dissipation frame are insulated.

In addition, the ground voltage of the data board is different from the ground voltage of the heat radiation frame.

In addition, a ground separation controller is further disposed between the data board and the heat dissipation frame to connect the ground of the data board and the ground of the heat dissipation frame.

In addition, an insulating layer is disposed between the data board and the heat dissipation frame.

Plasma display device according to an embodiment of the present invention is disposed between the ground voltage source connected to the scan board and the sustain board and the ground voltage source connected to the data board so that the address electrode is floating (floating) during the sustain period, By suppressing discharge, there is an effect of improving driving efficiency and improving stability and reliability.

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

1 is a view for explaining the configuration of a plasma display device according to an embodiment of the present invention.

Referring to FIG. 1, a plasma display apparatus according to the present invention includes a plasma display panel 100, a heat dissipation frame 110, and driving boards 120a, 120b, and 120c.

The heat dissipation frame 110 may provide a space in which the driving boards 120a, 120b, and 120c may be disposed, and may be disposed on the rear surface of the plasma display panel 100 to support the plasma display panel 100, and may include a plasma display panel ( Heat generated in 100) may be released to the outside.

Next, FIG. 2 is a diagram for describing a structure of a plasma display panel that may be included in a plasma display device according to an embodiment of the present invention.

Referring to FIG. 2, a plasma display panel that may be included in a plasma display device according to an embodiment of the present invention may include a front substrate 201 in which scan electrodes 202 and Y and sustain electrodes 203 and Z which are parallel to each other are disposed. In addition, the rear substrate 211 is disposed to face the front substrate 201, and the rear substrate 211 on which the address electrode 213 intersects the scan electrode 202 and the sustain electrode 203 is disposed.

An upper dielectric layer 204 covering the scan electrode 202 and the sustain electrode 203 is disposed on the front substrate 201 where the scan electrode 202 and the sustain electrode 203 are disposed.

The upper dielectric layer 204 limits the discharge current of the scan electrode 202 and the sustain electrode 203 and can insulate the scan electrode 202 and the sustain electrode 203.

A protective layer 205 may be disposed over the upper dielectric layer 204 to facilitate discharge conditions. The protective layer 205 may include a material having a high secondary electron emission coefficient such as magnesium oxide (MgO).

In addition, an electrode, for example, an address electrode 213 is disposed on the rear substrate 211, and an address electrode 213 is covered on the rear substrate 211 on which the address electrode 213 is disposed to insulate the address electrode 213. A dielectric layer, such as lower dielectric layer 215, may be disposed.

On top of the lower dielectric layer 215, a discharge space, that is, partition walls 212, such as a stripe type, a well type, a delta type, a honeycomb type, etc., which partition the discharge cells, may be disposed. Can be. The barrier rib 212 may be provided with a red (R), green (G), and blue (B) discharge cell between the front substrate 201 and the rear substrate 211. In addition, in addition to the red (R), green (G), and blue (B) discharge cells, white (W) or yellow (Yellow: Y) discharge cells may be further provided.

On the other hand, in the plasma display panel according to an embodiment of the present invention, the red (R), green (G), and blue (B) discharge cells may have substantially the same width, but the red (R), green (G), and The width of at least one of the blue (B) discharge cells may be different from that of the other discharge cells.

For example, the width of the red (R) discharge cell is the smallest, and the width of the green (G) and blue (B) discharge cells can be made larger than the width of the red (R) discharge cell. Here, the width of the green (G) discharge cell may be substantially the same as or different from the width of the blue (B) discharge cell.

The width of the phosphor layer 214 to be described later disposed in the discharge cell is then changed in relation to the width of the discharge cell. For example, the width of the blue (B) phosphor layer disposed in the blue (B) discharge cell is wider than the width of the red (R) phosphor layer disposed in the red (R) discharge cell, and at the same time in the green (G) discharge cell. The width of the green (G) phosphor layer disposed may be wider than the width of the red (R) phosphor layer disposed in the red (R) discharge cell, thereby improving the color temperature characteristics of the image implemented.

In addition, the plasma display panel according to the exemplary embodiment may not only have a structure of the barrier rib 212 illustrated in FIG. 2, but also a barrier rib having various shapes. For example, the partition 212 includes a first partition 212b and a second partition 212a, where the height of the first partition 212b and the height of the second partition 212a are different from each other. Etc. are possible.

In the case of such a differential partition structure, the height of the first partition 212b among the first partition 212b or the second partition 212a may be lower than the height of the second partition 212a.

In addition, although the red (R), green (G), and blue (B) discharge cells are each shown and described as being arranged on the same line in FIG. 2, they may be arranged in other shapes. For example, a delta type arrangement in which red (R), green (G) and blue (B) discharge cells are arranged in a triangular shape is also possible. In addition, the shape of the discharge cell is not only rectangular but also various polygonal shapes such as pentagon and hexagon.

In addition, although only the case where the partition 212 is formed in the rear substrate 211 is shown here in FIG. 2, the partition 212 may be disposed on at least one of the front substrate 201 and the rear substrate 211.

The discharge cell partitioned by the partition 212 is filled with a predetermined discharge gas.

In addition, a phosphor layer 214 that emits visible light for image display may be disposed in the discharge cell partitioned by the partition wall 212. For example, red (R), green (G), and blue (B) phosphor layers may be disposed.

In addition, in addition to the red (R), green (G) and blue (B) phosphors, at least one of a white (W) or yellow (Yellow: Y) phosphor layer may be further disposed.

In addition, the thickness of the phosphor layer 214 in at least one of the red (R), green (G), and blue (B) discharge cells may be different from other discharge cells. For example, the thickness of the phosphor layer of the green (G) discharge cell, ie the phosphor layer in the green (G) phosphor layer or the blue (B) discharge cell, ie the blue (B) phosphor layer, is It may be thicker than the thickness of the phosphor layer, ie the red (R) phosphor layer. Here, the thickness of the green (G) phosphor layer may be substantially the same as or different from the thickness of the blue (B) phosphor layer.

In the above description, only one example of the plasma display panel according to an exemplary embodiment of the present invention is illustrated and described. However, the present invention is not limited to the plasma display panel having the above-described structure. For example, in the above description, only the case where the lower dielectric layer 215 and the upper dielectric layer 204 are one layer is formed, but at least one of the lower dielectric layer or the upper dielectric layer is formed of a plurality of layers. It is also possible.

In addition, a black matrix (not shown) may be further disposed on the partition 212 to prevent reflection of external light due to the partition 212. In addition, the black matrix may be formed at a specific position on the front substrate 201 corresponding to the partition wall 112.

In addition, although the width and thickness of the address electrode 213 disposed on the rear substrate 211 may be substantially constant, 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.

3A to 3B are views for explaining the insulating layer.

The scan board 730 and the sustain board 740 may be electrically connected to each other by a ground line (not shown), and the scan board 730 and the sustain board 740 are separated from the data board 720.

Such a ground line will be described in detail with reference to FIGS. 4A to 4B.

In addition, since the ground voltage source of the scan board 730 and the sustain board 740 and the ground voltage source of the data board are different from each other, two different ground voltage sources should be separated.

In order to separate the ground voltage source, the heat dissipation frame 710, which is one of the ground voltage sources, and the driving boards 720, 730, and 740 must be separated, and the insulating layers 750 and 760 may be disposed as a means of separation. .

First, referring to FIG. 3A, the data board 720 and the heat dissipation frame 710 are electrically connected to each other, such that the heat dissipation frame 710 becomes a ground voltage source of the data board 720, and the scan board 730 and the sustain board 740. ) And an insulating layer 750 is disposed between the heat dissipation frame 710.

Accordingly, the scan board 730 and the sustain board 740 may be electrically separated from the heat radiation frame 710, which is a ground voltage source of the data board 720.

Alternatively, in FIG. 3B, the scan board 730 and the sustain board 740 are electrically connected to the heat dissipation frame 710 so that the heat dissipation frame 710 is the ground voltage source of the scan board 730 and the sustain board 740. The insulating layer 760 is disposed between the data board 720 and the heat dissipation frame 710.

Accordingly, the data board 720 may be electrically separated from the heat radiation frame 710, which is a ground voltage source of the scan board 730 and the sustain board 740.

Here, in FIGS. 3A to 3B, the insulation layers 750 and 760 are disposed as a method of insulating the heat dissipation frame 710 and the driving boards 720, 730, and 740, but the heat dissipation frame 710 and the driving board are described. Insulating the 720, 730, and 740 can be changed in various ways in addition to disposing the insulating layers 750 and 760.

4A to 4B are diagrams for explaining an example of the configuration of the plasma display device according to the present invention.

First, referring to FIG. 4A, the plasma display apparatus according to the present invention includes a data board 320, a scan board 330, and a sustain board 340, and includes a data board 320 on a rear surface of the heat radiation frame 310. The scan board 330 and the sustain board 340 are disposed.

In addition, the plasma display device may further include a power supply board 350, a control board 360, and a ground line 370.

The data board 320 supplies a driving signal to the address electrode of the plasma display panel.

The scan board 330 supplies a driving signal to the scan electrode of the plasma display panel.

The sustain board 340 supplies a driving signal to the sustain electrode of the plasma display panel.

The power supply board 350 supplies power used by the data board 320, the scan board 330, and the sustain board 340.

The control board 360 controls the operation of the data board 320, the scan board 330, and the sustain board 340.

The ground line 370 electrically connects the scan board 330 and the sustain board 340.

Here, the ground line 370 of FIG. 4A connects the scan board 330 and the power supply board 350, and connects the power supply board 350 and the sustain board 340 to the scan board 330 and the sustain board. 340 may be connected.

Next, in FIG. 4B, unlike the ground line 370 of FIG. 4A connected to the scan board and the sustain board through the power supply board, the ground line 371 of FIG. 4B includes the scan board 330 and the sustain board 340. Can be connected directly.

The ground lines 370 and 371 of FIGS. 4A to 4B show an example of connecting the scan board 330 and the sustain board 340, and the ground lines 370 and 371 are not limited to FIGS. 4A to 4B. If the scan board 330 and the sustain board 340 can be electrically connected, the connection method and the connection path may be variously changed.

5 is a diagram for explaining a ground separation controller.

Referring to FIG. 5, the plasma display apparatus further includes a ground separation controller 440, a first ground voltage source 450, and a second ground voltage source 460.

The plasma display panel 400 includes scan electrodes Y1 to Yn, sustain electrodes Z, and address electrodes X1 to Xm, and a scan board 420 is provided on the scan electrodes Y of the plasma display panel 400. One end of is electrically connected, one end of the sustain board 430 is electrically connected to the sustain electrode (Z), the first ground voltage source 450 is electrically connected to the other end of the scan board 420 and the sustain board 430 Is connected.

One end of the data board 410 is connected to the address electrode X, and the second ground voltage source 460 is electrically connected to the other end of the data board 410.

Here, the ground separation controller 440 is disposed between the first ground voltage source 450 and the second ground voltage source 460. The ground separation controller 440 is configured to switch between the first ground voltage source 450 and the second ground voltage source 460. The ground separation controller 150 includes a circuit in which a switch and a capacitor are connected in parallel.

The voltage of the first ground voltage source 450 and the voltage of the second ground voltage source 460 may be different from each other.

When the ground separation controller 440 is turned on, the first ground voltage source 450 and the second ground voltage source 460 are connected to each other, and when the ground separation controller 440 is turned off, the first ground voltage source 450 The second ground voltage source 460 is separated.

In the plasma display apparatus according to the exemplary embodiment of the present invention, the ground separation controller 440 is turned on in the reset period and the address period, and includes a first ground voltage source 450 connected to the scan board 420 and the sustain board 430. The second ground voltage source 460 connected to the data board 410 is connected to each other.

On the other hand, in the sustain period, the ground separation controller 440 is turned off to separate the first ground voltage source 450 and the second ground voltage source 460.

In this case, the ground separation controller 440 separates the first ground voltage source 450 connected to the scan board 420 and the sustain board 430 from the second ground voltage source 460 connected to the data board 410. A voltage difference occurs between the first ground voltage source 450 and the second ground voltage source 460, and the address electrode X may be in a floating state according to a change in the sustain signal.

The floating state of the address electrode X in this sustain period will be described in more detail with reference to FIGS. 6A to 6B.

6A to 6B are views for explaining an example of the operation of the plasma display device according to an embodiment of the present invention. 6A to 6B illustrate an example of a method of operating a plasma display panel according to an embodiment of the present invention. The present invention is not limited to FIGS. 6A to 6B, but an embodiment of the present invention. The method of operating the plasma display panel may be variously changed.

First, referring to FIG. 6A, a reset signal may be supplied to a scan electrode in a reset period for initialization. The reset signal may include a ramp-up signal and a ramp-down signal.

For example, in the set-up period, the voltage gradually increases from the second voltage V2 to the third voltage V3 after the voltage rises rapidly from the first voltage V1 to the second voltage V2 with the scan electrode. Rising rising ramp signals may be supplied. Here, the first voltage V1 may be a voltage of the ground level GND.

In this setup period, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. By this setup discharge, some wall charges can be accumulated in the discharge cells.

In the set-down period after the set-up period, the rising ramp signal and the falling ramp signal in the opposite polarity direction may be supplied to the scan electrode after the rising ramp signal.

Here, the falling ramp signal may gradually fall from the peak voltage of the rising ramp signal, that is, the fourth voltage V4 lower than the third voltage V3 to the fifth voltage V5.

As the falling ramp signal is supplied, 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 in the discharge cells remain uniformly.

In the address period after the reset period, a scan bias signal that substantially maintains the lowest voltage of the falling ramp signal, that is, a voltage higher than the fifth voltage V5, for example, the sixth voltage V6, is supplied to the scan electrode.

In addition, a scan signal falling from the scan bias signal may be supplied to the scan electrode.

Meanwhile, the pulse width of the scan signal Scan 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 may be supplied to the address electrode 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. .

Here, the sustain bias signal may be supplied to the sustain electrode in order to prevent the address discharge from becoming unstable due to the interference of the sustain electrode in the address period.

The sustain bias signal can keep the sustain bias voltage Vz smaller than the voltage of the sustain signal supplied in the sustain period and larger than the voltage of the ground level GND.

In the above-described reset period and the address period, as described above with reference to FIG. 5, the ground separation controller 440 is turned on so that the first ground voltage source 450 and the second ground voltage source 460 connected to the data board 410 are provided. The first and second ground voltage sources 450 and 460 are separated from each other by being connected to each other, and in the sustain period to be described later, the ground separation controller 440 is turned off.

Subsequently, in the sustain period for displaying an image, a sustain signal may be supplied to at least one of the scan electrode and the sustain electrode. For example, a sustain signal 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.

In this case, the ground separation controller 440 separates the first ground voltage source 450 connected to the scan board 420 and the sustain board 430 from the second ground voltage source 460 connected to the data board 410. A voltage difference occurs between the first ground voltage source 450 and the second ground voltage source 460, and thus the address electrode X may be in a floating state according to the change in the sustain signal.

In addition, the ground separation controller is turned off so that the first ground voltage and the second ground voltage are separated while the sustain signal is supplied to the scan electrode.

Accordingly, the voltage of the first ground voltage source and the voltage level of the second ground voltage source may be different, thereby inducing the address electrode to float.

As such, the voltage of the address electrode during the sustain period during which the sustain signal is supplied to the scan electrode is different from the voltage of the sustain signal of the scan electrode in a floating state, and the period may be substantially the same.

Next, FIG. 6B is a single sustain driving method, and the reset period is the same as that of FIG. 6A, and voltages supplied to the address period and the sustain period may be different.

In the address period, the signals supplied to the address electrode and the scan electrode are the same as in FIG. 6A. However, unlike the case in FIG. 6A, the sustain electrode is not supplied with the sustain bias signal and the ground voltage is supplied to maintain the ground level at the ground (GND) level. have.

Subsequently, in the sustain period for displaying an image, a sustain signal may be supplied to the scan electrode, and a ground voltage may be supplied to the sustain electrode to be maintained at the ground (GND) level.

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.

In the single sustain driving method, as in FIG. 6A, the ground separation controller 440 may include the first ground voltage source 450 connected to the scan board 420 and the sustain board 430, and the data board 410. When the two ground voltage sources 460 are separated from each other, a voltage difference occurs between the first ground voltage source 450 and the second ground voltage source 460. Accordingly, the address electrode X floats according to a change in the sustain signal. Floating) state.

During the sustain period of the single sustain driving method, the scan electrode is supplied with a sustain signal in which the positive sustain voltage Vs and the negative sustain voltage −Vs are alternately repeated.

Here, the ground electrode GND is supplied to the sustain electrode while the sustain signal is supplied to the scan electrode.

In addition, the ground separation controller is turned off so that the first ground voltage and the second ground voltage are separated while the sustain signal is supplied to the scan electrode.

Accordingly, the voltage of the first ground voltage source and the voltage level of the second ground voltage source may be different, thereby inducing the address electrode to float.

As such, the voltage of the address electrode during the sustain period during which the sustain signal is supplied to the scan electrode is different from the voltage of the sustain signal of the scan electrode in a floating state, and the period may be substantially the same.

As shown in FIGS. 6A to 6B, the discharge cells are repeatedly discharged during the sustain period by causing a signal similar to the sustain signal supplied to the scan electrode Y to be implemented in the floating state during the sustain period. By suppressing the counter-discharge generated when to cause the surface discharge can be effective.

Such counter discharge and surface discharge will be described in more detail with reference to FIGS. 7A to 7C.

Next, FIGS. 7A to 7C are views for explaining surface discharge and counter discharge.

If a sustain signal is supplied to the scan electrode 602 and the sustain electrode 603 during the sustain period and discharge occurs between the scan electrode 602 and the sustain electrode 603, the address electrode 613 does not float. As shown in FIG. 7A, a path generated between the scan electrode 602 and the sustain electrode 603, that is, a path of a surface discharge may be dragged toward the address electrode 613.

In this case, deterioration of the phosphor layer (not shown) disposed on the address electrode 613 side is accelerated, and the lifetime of the phosphor layer is shortened, and afterimage or stain may occur due to deterioration of the phosphor layer.

In addition, when a path of discharge generated between the scan electrode 602 and the sustain electrode 603 is attracted to the address electrode 613, the contact electrode 613 and the address electrode are in contact with the address electrode 613. Undesirable counter discharge may occur between 613 or between the sustain electrode 603 and the address electrode 613. Then, the distribution of the wall charges in the discharge cell becomes unstable and thus, the total discharge may become unstable. In addition, the image quality of the implemented image may be deteriorated due to these causes.

On the other hand, when the address electrode 613 is caused during the sustain period as in the embodiment of the present invention, when the discharge occurs between the scan electrode 602 and the sustain electrode 603, the scan electrode 602 and the address electrode ( The voltage difference between 613 and between the sustain electrode 603 and the address electrode 113 can be reduced.

Then, as shown in FIG. 7B, a path of the discharge generated between the scan electrode 602 and the sustain electrode 603 may be brought into close contact with the scan electrode 602 and the sustain electrode 603, thereby stabilizing the discharge. It is possible to prevent the occurrence of afterimages and stains, and to improve the image quality of the image.

In more detail, when the voltage of the scan electrode 602 rises to the positive sustain voltage Vs, the wall voltage formed during the address period and the positive sustain voltage Vs are added to the inside of the discharge cell so that the scan electrode ( Surface discharge is generated between the 602 and the sustain electrode 603. At this time, the counter discharge between the scan electrode 602 and the address electrode 613 should also be generated by the voltage difference between the scan electrode 602 and the address electrode 613. However, when the address electrode 613 is floated in this way, The voltage difference between the scan electrode 602 and the address electrode 613 is reduced to reduce the counter discharge.

Similarly, the counter discharge is reduced even when the voltage between the scan electrode 602 and the sustain electrode 603 falls to the negative sustain voltage (-Vs).

In addition, as shown in FIG. 7C, when the distance d2 between the scan electrode 602 and the sustain electrode 603 is larger than the distance d1 between the scan electrode 602 and the sustain electrode 603 in FIGS. 7A to 7B. In this case, it may be more advantageous to drive the floating address electrodes during the sustain period.

In the large-inch plasma display device, the width of the cell is wider than that of the small-inch, and thus, the distance between the scan electrode 602 and the sustain electrode 603 is increased. If so, the discharge can be made stable.

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 view for explaining the configuration of a plasma display device according to an embodiment of the present invention.

2 is a view for explaining the structure of a plasma display panel that can be included in a plasma display device according to an embodiment of the present invention.

3A to 3B are views for explaining the insulating layer.

4A to 4B are diagrams for explaining an example of the configuration of the plasma display device according to the present invention;

5 is a diagram for explaining a ground separation control unit;

6A to 6B are views for explaining an example of the operation of the plasma display device according to one embodiment of the present invention;

7A to 7C are diagrams for explaining surface discharge and counter discharge.

<Explanation of symbols for the main parts of the drawings>

100: plasma display panel 110: heat dissipation frame

120a, 120b, 120c: drive board

Claims (8)

A plasma display panel including a front substrate having a scan electrode and a sustain electrode formed thereon, and a rear substrate having an address electrode disposed to intersect the scan electrode and the sustain electrode; A heat dissipation frame disposed on a rear surface of the plasma display panel; And A driving board disposed on a rear surface of the heat dissipation frame; Including, The driving board is A scan board supplying a driving signal to the scan electrode; A sustain board supplying a drive signal to the sustain electrode; And A data board supplying a drive signal to the address electrode; Including, The scan board and the sustain board are insulated from the heat dissipation frame, And the scan board and the sustain board are electrically connected to each other by a ground line. The method of claim 1, And a ground voltage of the scan board and the sustain board is different from a ground voltage of the heat radiation frame. The method of claim 1, And a ground separation controller configured to connect the ground of the scan board and the sustain board and the ground of the heat radiation frame between the scan board and the sustain board and the heat radiation frame. The method of claim 1, And an insulating layer disposed between the scan board, the sustain board, and the heat dissipation frame. A plasma display panel including a front substrate having a scan electrode and a sustain electrode formed thereon, and a rear substrate having an address electrode disposed to intersect the scan electrode and the sustain electrode; A heat dissipation frame disposed on a rear surface of the plasma display panel; And A driving board disposed on a rear surface of the heat dissipation frame; Including, The driving board is A scan board supplying a driving signal to the scan electrode; A sustain board supplying a drive signal to the sustain electrode; And A data board supplying a drive signal to the address electrode; Including, And the heat dissipation frame is insulated from the data board. The method of claim 5, wherein And a ground voltage of the data board is different from a ground voltage of the heat radiation frame. The method of claim 5, wherein And a ground separation controller configured to connect the ground of the data board and the ground of the heat radiation frame between the data board and the heat radiation frame. The method of claim 5, wherein And an insulating layer disposed between the data board and the heat dissipation frame.

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