KR20070121290A - Plasma display apparatus - Google Patents

Abstract

A plasma display device is provided to reduce a manufacturing cost by using a driving unit for applying a common driving signal to electrodes of a plurality of plasma display panels. A first plasma display panel(100) includes an electrode, and a second plasma display panel(110) includes an electrode. A driving unit(120) applies commonly a driving signal to the electrode of the first plasma display panel and the electrode of the second plasma display panel. The first plasma display panel includes a first scan electrode, a first sustain electrode parallel to the first scan electrode, and a first address electrode crossing the first scan electrode and the first sustain electrode. The second plasma display panel includes a second scan electrode, a second sustain electrode parallel to the second scan electrode, and a second address electrode crossing the second scan electrode and the second sustain electrode. The driving unit includes a common scan driving part for applying commonly a driving signal to the first and second scan electrodes, a common sustain driving part for applying commonly the driving signal to the first and second sustain electrodes, and a common data driving part for applying commonly the driving signal to the first and second address electrodes.

Description

Plasma Display Apparatus {Plasma Display Apparatus}

BRIEF DESCRIPTION OF DRAWINGS Fig. 1 is a diagram for explaining the configuration of a plasma display device of the present invention.

2A to 2B are views for explaining an example of the structure of a plasma display panel included in the plasma display device of the present invention.

FIG. 3 is a diagram for explaining a frame for implementing grayscale of an image in the plasma display device of the present invention; FIG.

4 is a view for explaining an example of the operation of the plasma display device of the present invention;

5A to 5B are diagrams for explaining another form of the rising ramp signal or the second falling ramp signal.

Fig. 6 is a diagram for explaining another type of the sustain signal.

7 is a view for explaining an example of the form of a drive unit according to the present invention.

FIG. 8 is a view for explaining an example where the first plasma display panel and the second plasma display panel are arranged in opposite directions. FIG.

9 is a view for explaining another example of the form of the drive unit according to the present invention.

FIG. 10 is a view for explaining an example in which a first plasma display panel and a second plasma display panel are arranged in parallel with each other left and right.

FIG. 11 is a view for explaining an example in which a first plasma display panel and a second plasma display panel are connected through a hinge portion. FIG.

FIG. 12 is a view for explaining another example of the shape of a driving unit in a case where the first and second plasma display panels are connected to each other by a hinge unit; FIG.

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

100: first plasma display panel 110: second plasma display panel

120: drive unit

The present invention relates to a plasma display device (Plasma Display Apparatus).

The plasma display apparatus includes a plasma display panel having electrodes formed thereon, and a driver for applying a predetermined driving signal to the electrodes of the plasma display panel.

In general, a phosphor layer is formed in a discharge cell (Cell) partitioned by a partition, and a plurality of electrodes are formed in the plasma display panel.

The driving unit applies a driving signal to the discharge cell through the electrode.

Then, 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 fluorescent material formed in the discharge cell to emit visible light. Generates. The visible light displays an image on the screen of the plasma display panel.

Meanwhile, in the conventional plasma display apparatus, one driving unit is required for each plasma display panel to drive the plurality of plasma display panels.

For example, two driving units are required to drive two plasma display panels.

Even when the same image is displayed on a plurality of plasma display panels, a plurality of driving units are required.

As a result, a problem of an increase in manufacturing cost by the driving unit occurs.

SUMMARY OF THE INVENTION In order to solve the above problems, an object of the present invention is to provide a plasma display apparatus in which manufacturing cost is reduced by driving a plurality of plasma display panels using one driving unit.

The plasma display device of the present invention for achieving the above object is a driving signal in common to the first plasma display panel and the second plasma display panel including the electrode, the electrode of the first plasma display panel and the electrode of the second plasma display panel It is preferable to include a driving unit for applying.

In addition, the first plasma display panel includes a first scan electrode and a first sustain electrode parallel to each other, and a first address electrode crossing the first scan electrode and the first sustain electrode, and the second plasma display panel includes a second parallel electrode And a scan electrode, a second sustain electrode, and a second address electrode intersecting the second scan electrode and the second sustain electrode, wherein the driver includes a common scan to apply a driving signal to the first scan electrode and the second scan electrode in common. And a common sustain driver for applying a driving signal to the first sustain electrode and the second sustain electrode in common, and a common data driver for applying a driving signal to the first address electrode and the second address electrode in common. do.

In addition, the first plasma display panel includes a first scan electrode and a first sustain electrode parallel to each other, and a first address electrode crossing the first scan electrode and the first sustain electrode, and the second plasma display panel includes a second parallel electrode A scan electrode, a second sustain electrode, and a second address electrode intersecting the second scan electrode and the second sustain electrode, wherein the driver includes a common scan driver to apply a driving signal to the first scan electrode and the second scan electrode in common; A common sustain driver for applying a drive signal to the first sustain electrode and the second sustain electrode in common; a first data driver for applying a drive signal to the first address electrode and a second signal for applying the drive signal to the second address electrode; And two data drivers.

In addition, the first plasma display panel and the second plasma display panel may be connected to each other by a hinge unit.

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

1 is a view for explaining the configuration of the plasma display device of the present invention.

Referring to FIG. 1, the plasma display apparatus of the present invention includes a plurality of plasma display panels, for example, a first plasma display panel 100, a second plasma display panel 110, and a driver 120.

The driver 120 applies a driving signal in common to an electrode formed on the first plasma display panel 100 and an electrode formed on the second plasma display panel 110.

Here, in FIG. 1, only the case where the driving unit 120 is formed as one board is shown. However, in the present invention, the driving unit 120 is formed according to the electrodes formed on the first and second plasma display panels 100 and 110. It is also possible to be divided into a plurality of board forms.

For example, in the plasma display device of the present invention, the driver 120 includes a scan driver (not shown) for driving the scan electrode (Y), a sustain driver (not shown) for driving the sustain electrode (Z), and an address electrode. It can be divided into a data driver (not shown) for driving (X).

The driving unit 120 of the plasma display device of the present invention will be more clearly described later.

The first plasma display panel 100 and the second plasma display panel 110 may include first and second scan electrodes Y to which scan signals are applied, and first and second sustains parallel to the first and second scan electrodes Y. It is preferable that the electrode Z is formed and the first and second address electrodes X intersecting the first and second scan electrodes Y and the first and second sustain electrodes Z are formed.

Hereinafter, a scan electrode Y formed on the first plasma display panel 100 is referred to as a first scan electrode, a sustain electrode Z as a first sustain electrode, and an address electrode X as a first address electrode. The scan electrode Y formed on the plasma display panel 110 is called a second scan electrode, the sustain electrode Z is called a second sustain electrode, and the address electrode X is called a second address electrode.

An example of the structure of the first and second plasma display panels 100 and 110 will be described in detail with reference to FIGS. 2A to 2B.

2A to 2B are views for explaining an example of the structure of the plasma display panel included in the plasma display device of the present invention.

2A to 2B, the first and second scan electrodes, the first and second sustain electrodes, and the first and second address electrodes of the first plasma display panel and the second plasma display panel are not separated. do.

First, referring to FIG. 2A, a plasma display panel according to the present invention includes a front panel 201 including an electrode, preferably a front substrate 201 on which scan electrodes 202 and Y and sustain electrodes 203 and Z are formed. A rear panel including a back substrate 211 on which an electrode intersecting the scan electrodes 202 and Y and the sustain electrodes 203 and Z, preferably the address electrodes 213 and X, are formed. 210 may be bonded to each other.

Here, the electrodes formed on the front substrate 201, preferably the scan electrodes 202 and Y and the sustain electrodes 203 and Z, generate a discharge in a discharge space, that is, a discharge cell, and at the same time Maintain the discharge.

The dielectric layer, preferably on the upper surface of the front substrate 201 where the scan electrodes 202 and Y and the sustain electrodes 203 and Z are formed to cover the scan electrodes 202 and Y and the sustain electrodes 203 and Z. Upper dielectric layer 204 is formed.

This upper dielectric layer 204 limits the discharge current of the scan electrodes 202 and Y and the sustain electrodes 203 and Z and insulates the scan electrodes 202 and Y from the sustain electrodes 203 and Z.

A protective layer 205 is formed on the top surface of the upper dielectric layer 204 to facilitate discharge conditions. The protective layer 205 is formed by, for example, depositing a material such as magnesium oxide (MgO) over the upper dielectric layer 204.

Meanwhile, the electrodes formed on the rear substrate 211, preferably the address electrodes 213 and X, are electrodes that apply a data signal to the discharge cells.

A dielectric layer, preferably a lower dielectric layer 215 is formed on the rear substrate 211 on which the address electrodes 213 and X are formed to cover the address electrodes 213 and X.

This lower dielectric layer 215 insulates the address electrodes 213, X.

On top of the lower dielectric layer 215, a partition 212, such as a stripe type, a well type, a delta type, a honeycomb type, for partitioning a discharge cell, that is, a discharge cell, is formed. Is formed. Accordingly, discharge cells such as red (R), green (G), and blue (B) are formed between the front substrate 201 and the rear substrate 211.

Here, a predetermined discharge gas is filled in the discharge cell partitioned by the partition wall 212.

In addition, a phosphor layer 214 is formed in a discharge cell partitioned by the partition 212 to emit visible light for image display during address discharge. For example, red (R), green (G), and blue (B) phosphor layers may be formed.

In the plasma display panel of the present invention described above, when the driving signal is supplied to at least one of the scan electrodes 202, Y, the sustain electrodes 203, Z, and the address electrodes 213, X, the barrier rib 212 is provided. Discharges occur within the discharge cells partitioned by each other.

Then, vacuum ultraviolet rays are generated in the discharge gas filled in the discharge cells, and the vacuum ultraviolet rays are applied to the phosphor layer 214 formed in the discharge cells. Then, a predetermined visible light is generated in the phosphor layer 214, and the visible light is emitted to the outside through the front substrate 201 in which the upper dielectric layer 204 is formed. A predetermined image is displayed on the outer surface.

Meanwhile, in the description of FIG. 2A, only the case where the scan electrodes 202 and Y and the sustain electrodes 203 and Z are each formed of one layer is illustrated and described. However, the scan electrodes 202 and Y or the It is also possible that at least one of the sustain electrodes 203 and Z consists of a plurality of layers. This will be described with reference to FIG. 2B.

Referring to FIG. 2B, the scan electrodes 202 and Y and the sustain electrodes 203 and Z may be formed of two layers, respectively.

In particular, in consideration of light transmittance and electrical conductivity, the scan electrodes 202 and Y and the sustain electrodes 203 and Z are opaque silver (Ag) to emit light generated in the discharge cell to the outside and to secure driving efficiency. Bus electrodes 202b and 203b and transparent electrodes 202a and 203a made of transparent indium tin oxide (ITO).

As such, the reason why the scan electrodes 202 and Y and the sustain electrodes 203 and Z include the transparent electrodes 202a and 203a is that when visible light generated in the discharge cells is emitted to the outside of the plasma display panel. To be released effectively.

In addition, the reason why the scan electrodes 202 and Y and the sustain electrodes 203 and Z include the bus electrodes 202b and 203b is that the scan electrodes 202 and Y and the sustain electrodes 203 and Z are transparent electrodes. In the case of including only 202a and 203a, the driving efficiency can be reduced because the electrical conductivity of the transparent electrodes 202a and 203a is relatively low, so that the transparent electrodes 202a and 203a can cause such a reduction in the driving efficiency. To compensate for low electrical conductivity.

As described above, in the case where the scan electrodes 202 and Y and the sustain electrodes 203 and Z include the bus electrodes 202b and 203b, the transparent electrodes (202b and 203b) prevent the reflection of external light by the bus electrodes 202b and 203b. Black layers 220 and 221 may be further provided between the 202a and 203a and the bus electrodes 202b and 203b.

Meanwhile, the transparent electrodes 202a and 203a may be omitted in the same structure as in FIG. 2B. In other words, ITO-Less is also possible.

For example, the scan electrodes 202 and Y and the sustain electrodes 203 and Z may be made of only the bus electrodes 202b and 203b without the transparent electrodes 202a and 203a in FIG. 2B. That is, the scan electrodes 202 and Y and the sustain electrodes 203 and Z may be formed of one layer of the bus electrodes 202b and 203b.

2A and 2B, only one example of the first and second plasma display panels according to the present invention are illustrated and described, and the present invention is not limited to the plasma display panel having the same structure as that of FIGS. 2A to 2B. Put it. For example, the plasma display panel of FIGS. 2A to 2B shows only the case where the upper dielectric layer 204 and the lower dielectric layer 215 are each one layer, but the upper dielectric layer 204 and At least one or more of the lower dielectric layers 215 may be formed of a plurality of layers.

In addition, a black layer (not shown) may be further formed on the top of the partition 212 to prevent reflection of the external light due to the partition 212.

As such, the structure of the first and second plasma display panels applied to the plasma display device of the present invention may be variously changed.

An example of the operation of the plasma display apparatus of the present invention including the first and second plasma display panels will be described with reference to FIGS. 3 to 4.

FIG. 3 is a diagram for explaining a frame for implementing gray levels of an image in the plasma display apparatus of the present invention.

4 is a view for explaining an example of the operation of the plasma display device of the present invention.

First, referring to FIG. 3, in the plasma display device of the present invention, a frame for implementing gray levels of an image is divided into several subfields having different emission counts.

In addition, although not shown, each subfield may further include a reset period for initializing all discharge cells, an address period for selecting discharge cells to be discharged, and a sustain period for implementing gray levels according to the number of discharges. Sustain Period).

For example, when displaying an image with 256 gray levels, a frame period (16.67 ms) corresponding to 1/60 second is divided into eight subfields SF1 to SF8 as shown in FIG. Each of the subfields SF1 to SF8 is divided into a reset period, an address period, and a sustain period.

The gray scale weight of the corresponding subfield may be set by adjusting the number of the sustain signals supplied in the sustain period. That is, a predetermined gray scale weight can be given to each subfield using the sustain period. For example, the gray scale weight of each subfield is 2n by setting the gray scale weight of the first subfield to 2 ⁰ and the gray scale weight of the second subfield to 21, where n = 0, 1, and 2 , 3, 4, 5, 6, and 7) can be determined to increase the gray scale weight of each subfield. As described above, the number of sustain signals supplied in the sustain period of each subfield is adjusted according to the gray scale weight in each subfield, thereby implementing gray levels of various images.

The plasma display device of the present invention uses a plurality of frames to display an image of one second. For example, 60 frames are used to display an image of 1 second.

In FIG. 3, only one frame is composed of eight subfields. However, the number of subfields forming one frame may be changed in various ways. For example, one frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one frame may be configured with 10 subfields.

The image quality of the image implemented by the plasma display apparatus implementing the gray level of the image using the frame may be determined according to the number of subfields included in the frame. That is, when 12 subfields are included in a frame, gray levels of 212 images can be expressed. When eight subfields are included in a frame, 28 gray levels can be realized.

Also, in FIG. 3, subfields are arranged according to the order of increasing the magnitude of gray scale weight in one frame. Alternatively, subfields may be arranged in the order of decreasing gray scale weight in one frame. Subfields may be arranged regardless of the weight.

Next, referring to FIG. 4, an example of an operation of the plasma display apparatus of the present invention in any one of a plurality of subfields included in the same frame as in FIG. 3 is shown.

As described above, the driver 120 of FIG. 1 may apply the first ramp down signal to the first or second scan electrode Y in the pre-reset period before the reset period.

In addition, the driver 120 may receive a first sustain bias signal having a polarity opposite to that of the first falling ramp signal while the first falling ramp signal is applied to the first or second scan electrode (Y). It can apply to (Z).

Here, it is preferable that the first falling ramp signal applied to the first and second scan electrodes Y gradually fall to the tenth voltage V10. Preferably, the first falling ramp signal is preferably gradually lowered from the voltage of the ground level GND.

In addition, the first sustain bias signal preferably maintains the first sustain bias voltage Vz1 substantially constant. Here, it is preferable that the first sustain bias voltage Vz1 is approximately the same voltage as the voltage of the sustain signal SUS applied in the subsequent sustain period, that is, the sustain voltage Vs.

As such, when the first falling ramp signal is applied to the first or second scan electrode Y and the first sustain bias signal is applied to the first or second sustain electrode Z in the pre-reset period, the first or second scan signal is applied. Wall charges of a predetermined polarity are accumulated on the second scan electrode Y, and wall charges of opposite polarities to the first or second scan electrode Y are stacked on the first or second sustain electrode Z. . For example, positive wall charges are accumulated on the first or second scan electrode Y, and negative wall charges are accumulated on the first or second sustain electrode Z. .

This makes it possible to generate a setup discharge of sufficient intensity in the subsequent reset period, thereby enabling the initialization to be sufficiently stable.

Even when the amount of wall charges in the discharge cell is insufficient, a setup discharge of sufficient intensity can be generated.

In addition, even if the voltage of the rising ramp signal Ramp-Up applied to the first or second scan electrode Y becomes smaller in the reset period, it is possible to generate the setup discharge of sufficient intensity.

The pre-reset period described above may be included before the reset period in all subfields of the frame.

Alternatively, a pre-reset period is included before the reset period in one subfield having the smallest gray scale weight among the subfields of the frame from the viewpoint of securing the driving time, or a reset period in two or three subfields of the subfields of the frame. It is also possible to include a pre-reset period before.

Alternatively, this pre-reset period may be omitted in all subfields.

After the pre-reset period, in the set-up period of the reset period for initialization, the driving unit 120 ramps up the ramp in the opposite polarity direction to the first falling ramp signal to the first or second scan electrode (Y). Up) signal can be applied.

Here, the rising ramp signal may include a first rising ramp signal gradually increasing with a first slope from the twentieth voltage V20 to the thirtieth voltage V30 and the second rising ramp signal from the thirtieth voltage V30 to the forty-th voltage V40. It is preferred to include a second rising ramp signal that rises with a slope.

In this case, the driver 120 preferably applies the second sustain bias signal having a voltage lower than the first sustain bias voltage Vz1 of the first sustain bias signal to the first or second sustain electrode Z.

Here, the second sustain bias signal preferably maintains the second sustain bias voltage Vz2 substantially, and the second sustain bias voltage Vz2 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. This setup discharge causes a certain amount of wall charges to accumulate in the discharge cell.

Here, it is preferable that the second slope of the second rising ramp signal is gentler than the first slope. As such, when the second slope is made gentler than the first slope, the voltage is increased relatively quickly until the setup discharge occurs, and the voltage is increased relatively slowly while the setup discharge occurs. The amount of light generated by the setup discharge can be reduced.

Accordingly, the contrast characteristic can be improved.

In the set-down period after the set-up period, the driving unit 120 receives a second ramp-down signal in a direction opposite to that of the rising ramp signal after the rising ramp signal. Y) can be applied.

Here, it is preferable that the second falling ramp signal gradually decreases from the twentieth voltage V20 to the fifty voltage V50.

Here, the driver 120 maintains the second sustain bias voltage Vz2 substantially in part while the second falling ramp signal is applied to the first or second scan electrode Y in the reset period. It is preferable to apply the signal Vz2 to the first or second sustain electrode Z.

As a result, weak erase discharge, that is, set-down 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.

Meanwhile, unlike FIG. 4, the rising ramp signal or the second falling ramp signal may be set, which will be described below with reference to FIGS. 5A to 5B.

5A to 5B are diagrams for explaining another form of the rising ramp signal or the second falling ramp signal.

First, referring to FIG. 5A, the rising ramp signal gradually increases from the thirtieth voltage V30 to the forty-th voltage V40 after rapidly rising to the thirtieth voltage V30.

As such, the rising ramp signal may rise gradually with different inclinations over two stages, as shown in FIG. 4, and in various forms, such as gradually rising in one stage as shown here in FIG. 5A. It is possible to change.

Next, referring to FIG. 5B, the second falling ramp signal has a form in which the voltage gradually decreases from the thirtieth voltage V30.

As described above, the second falling ramp signal may be changed in various forms, such as a different point in time at which the voltage falls.

This concludes the description of FIGS. 5A to 5B.

Meanwhile, in the address period after the reset period, the driver 120 applies a scan bias signal to the first or second scan electrode Y that substantially maintains a voltage higher than the 50 th voltage V50 of the second falling ramp signal. can do.

In addition, the scan signal Scan, which drops from the scan bias signal to the 60th voltage V60, may be applied to all of the first or second scan electrodes Y1 to Yn and Y1 ′ to Yn ′.

For example, the first scan signal Scan 1 is applied to the first scan electrode Y1 among the plurality of scan electrodes Y, and then the second scan signal Scan 2 is applied to the second scan electrode Y2. Is applied, and an n-th scan signal Scan n is applied to the n-th scan electrode Yn.

As described above, when the scan signal falling down to the 60 th voltage V60 is applied to the first or second scan electrode Y, the data voltage is applied to the first or second address electrode X correspondingly. A data signal rising by the magnitude ΔVd may be applied.

As the scan signal Scan and the data signal Data are applied, a voltage difference between the voltage V60 of the scan signal and the data voltage Vd of the data signal and the wall charges generated in the reset period are applied. By the addition of the wall voltage, the address discharge is generated in the discharge cell to which the voltage Vd of the data signal is applied.

In this discharge cell selected by the address discharge, wall charges such that sustain discharge can occur when the sustain signal SUS is applied in a subsequent sustain period are formed.

In addition, in this address period, the driver 120 applies a third sustain bias signal to the first or second sustain electrode Z to prevent address discharge from becoming unstable due to interference of the first or second sustain electrode Z. FIG. It is preferable to apply.

Here, it is preferable that the third sustain bias signal maintains the third sustain bias voltage Vz3 substantially smaller than the first sustain bias voltage Vz1 and greater than the second sustain bias voltage Vz2.

Thereafter, the driver 110 applies the sustain signal SUS to at least one of the first or second scan electrode Y or the first or second sustain electrode Z in the sustain period for displaying an image. For example, the sustain signal SUS is applied to the first or second scan electrode Y and the first or second sustain electrode Z alternately. The sustain signal SUS preferably has a magnitude of a voltage of ΔVs.

When the sustain signal SUS is applied, the discharge cell selected by the address discharge is the first or the first when the sustain signal SUS is applied while the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal SUS are added. A sustain discharge, that is, a display discharge, occurs between the second scan electrode Y and the first or second sustain electrode Z. Accordingly, a predetermined image is implemented on the plasma display panel.

It is also possible to apply a sustain signal in a different type from this FIG. 4. This will be described with reference to FIG. 6 attached thereto.

6 is a diagram for explaining another type of the sustain signal.

Referring to FIG. 6, a positive sustain signal and a negative sustain signal are applied to any one of the first and second scan electrodes Y or the first and second sustain electrodes Z, for example, the scan electrode. The signals are applied alternately.

As such, while a positive sustain signal and a negative sustain signal are applied to any one electrode, a bias signal is preferably applied to the other electrode, for example, the first or second sustain electrode Z.

Here, the bias signal preferably maintains the voltage at the ground level GND substantially constant.

As such, the shape of the sustain signal SUS may be variously changed.

When the sustain signal is applied to only one of the first and second scan electrodes Y or the first and second sustain electrodes Z and the bias signal is applied to the other electrode in the sustain period, Can be simplified.

For example, when a sustain signal is also applied to the first or second scan electrode Y, and a sustain signal is also applied to the first or second sustain electrode Z, the first or second scan electrode Y is applied to the first or second scan electrode Y. A driving board for arranging circuits for applying a sustain signal and a driving board for arranging circuits for applying a sustain signal to the first or second sustain electrodes Z are required.

On the other hand, when the sustain signal is applied to only one of the first and second scan electrodes Y or the first and second sustain electrodes Z as in the present invention, the first and second scan electrodes Y or the first In this case, only one driving board in which circuits for applying a sustain signal to one of the two sustain electrodes Z is disposed.

As a result, the overall size of the driving unit can be reduced, thereby reducing the manufacturing cost.

Herein, the shape of the driving unit of the plasma display apparatus of the present invention will be described in detail.

7 is a view for explaining an example of the form of a drive unit according to the present invention.

Referring to FIG. 7, the driver according to the present invention preferably includes a common scan driver 720, a common sustain driver 730, and a common data driver 740.

The common scan driver 720 applies a driving signal to the first scan electrode Y of the first plasma display panel 700 and the second scan electrode Y ′ of the second plasma display panel 710 in common. do.

For example, as shown in FIG. 4, the rising ramp signal, the falling ramp signal, the scan signal, and the like are commonly applied to the first scan electrode Y and the second scan electrode Y '.

The common sustain driver 730 applies a driving signal in common to the first sustain electrode Z of the first plasma display panel 700 and the second sustain electrode Z ′ of the second plasma display panel 710.

For example, as shown in FIG. 4, a sustain signal or the like is commonly applied to the first sustain electrode Z and the second sustain electrode Z '.

The common data driver 740 applies a driving signal to the first address electrode X of the first plasma display panel 700 and the second address electrode X ′ of the second plasma display panel 710 in common. do.

For example, as shown in FIG. 4, a data signal or the like is commonly applied to the first address electrode X and the second address electrode X '.

In the case of FIG. 7, the first plasma display panel 700 and the second plasma display panel 710 may display substantially the same image.

That is, the common scan driver 720 applies substantially the same signal to the first scan electrode Y and the second scan electrode Y ', and the common sustain driver 730 is formed of the first sustain electrode Z and the first signal. By substantially applying the same signal to the second sustain electrode Z ', the common data driver 740 also applies substantially the same signal to the first address electrode X and the second address electrode X'. Substantially the same image is displayed on the first plasma display panel 700 and the second plasma display panel 710.

On the other hand, the common data driver 740 applies different driving signals to the first address electrode X and the second address electrode X 'so that the first plasma display panel 700 and the second plasma display panel 710 are different. It is also possible to display different images in the).

As such, when one driving unit applies a driving signal to the electrodes of the plurality of plasma display panels, for example, the first and second plasma display panels 700 and 710 in common, the driving unit may be driven by the electrodes of the first plasma display panel 700. The manufacturing cost is reduced compared to the case where both the driver for applying the signal and another driver for applying the driving signal to the electrodes of the second plasma display panel 710 are provided.

Meanwhile, in order to display the same image on the first plasma display panel 700 and the second plasma display panel 710 in FIG. 7, the common data driver 740 reverses the driving signal, that is, the upper and lower positions of the data signal. Just do it.

Meanwhile, in FIG. 7, the first plasma display panel 700 and the second plasma display panel 710 are arranged side by side, but may be arranged differently. This will be described with reference to FIG. 8 attached thereto.

FIG. 8 is a diagram for explaining an example in which the first plasma display panel and the second plasma display panel are arranged in opposite directions.

Referring to FIG. 8, the first plasma display panel 700 and the second plasma display panel 710 are disposed to face each other.

In addition, the common scan driver 720 is disposed at one end of the first plasma display panel 700 and the second plasma display panel 710, and the common sustain driver 730 is formed of the first plasma display panel 700 and the first plasma display panel 700. 2 is disposed at the other end of the plasma display panel 710, and the common data driver 740 is disposed at the lower ends of the first plasma display panel 700 and the second plasma display panel 710.

In this case, one viewer may watch an image displayed on the screen of the first plasma display panel 700 from the front of the first plasma display panel 700, and another viewer may view the front surface of the second plasma display panel 710. In this example, the image displayed on the screen of the second plasma display panel 710 may be viewed.

In the case of FIG. 8, since the image displayed on the first plasma display panel 700 and the image displayed on the second plasma display panel 710 are opposite to each other, the viewer may display the first and second plasma displays. In order to view a normal image on the panels 700 and 710, a driving signal applied by the common data driver 740 to the first address electrode X of the first plasma display panel 700, that is, the data signal and the second plasma, are provided. Preferably, the left and right positions of the data signal applied to the second address electrode X 'of the display panel 710 are reversed.

8 illustrates only a case in which the common scan driver 720, the common sustain driver 730, and the common data driver 740 are disposed on one side, the other side, and the lower side of the first and second plasma display panels 700 and 710. Alternatively, a frame (not shown) is disposed on at least one rear surface of the first plasma display panel 700 or the second plasma display panel 710, and the common scan driver 720 and the common sustain are disposed on the frame. At least one of the driver 730 and the common data driver 740 may be disposed.

Next, Figure 9 is a view for explaining another example of the form of the drive unit according to the present invention.

Here, in FIG. 9, the description of the contents already described in detail with reference to FIGS. 7 to 8 will be omitted.

9, the driver according to the present invention preferably includes a common scan driver 920, a common sustain driver 930, a first data driver 940, and a second data driver 950.

9, the common data driver is divided into a first data driver 940 and a second data driver 950.

The first data driver 940 applies a driving signal to the first address electrode X of the first plasma display panel 900.

The second data driver 950 applies a driving signal to the second address electrode X ′ of the second plasma display panel 910.

9 is advantageous when the image displayed on the first plasma display panel 900 and the image displayed on the second plasma display panel 910 are different from each other.

In addition, when the first data driver 940 and the second data driver 950 are included as shown in FIG. 9, the first plasma display panel 900 and the second plasma display panel 910 are arranged left and right. Can be placed. This will be described with reference to FIG. 10 attached thereto.

FIG. 10 is a diagram for describing an example in which the first plasma display panel and the second plasma display panel are arranged in parallel with each other left and right.

Referring to FIG. 10, the first plasma display panel 1000 and the second plasma display panel 1010 are arranged side by side in left and right directions.

In addition, the first data driver 1050 and the second data driver 1060 are disposed under the first plasma display panel 1000 and the second plasma display panel 1010, respectively.

The common scan driver 1020 is disposed between the first plasma display panel 1000 and the second plasma display panel 1010.

Meanwhile, in FIG. 10, the sustain driver is configured to apply a driving signal to the first sustain electrode Z of the first plasma display panel 1000. The second sustain driver 1030 and the second plasma display panel 1010 of the second plasma display panel 1010 are shown in FIG. 10. A second sustain driver 1040 for applying a drive signal to the sustain electrode (Z ') is shown as including.

Alternatively, one common sustain driver is disposed on either side of the first plasma display panel 1000 or the second plasma display panel 1010 so that the first sustain electrode Z or the second sustain electrode Z 'is disposed. It is also possible to connect to any one of the other, and to connect the other using a transmission cable (Cable).

Here, when the shape of the driver is set as shown in FIG. 10, an image displayed on the first plasma display panel 1000 and the second plasma display panel 1010 may be viewed together in one direction, or the first plasma may be viewed in different directions. An image displayed on the display panel 1000 and the second plasma display panel 1010 may be viewed.

Here, in FIG. 10, the common scan driver 1020, the first and second sustain drivers 1030 and 1040, and the first and second data drivers 1050 and 1060 are one side of the first and second plasma display panels 1000 and 1010. Although only the case where it is disposed on the other side or the lower side is illustrated, unlike this, a frame (not shown) is disposed on at least one rear surface of the first plasma display panel 1000 or the second plasma display panel 1010. One or more of the common scan driver 1020, the first and second sustain drivers 1030 and 1040, and the first and second data drivers 1050 and 1060 may be disposed in the same.

Next, FIG. 11 is a view for explaining an example in which the first plasma display panel and the second plasma display panel are connected through a hinge portion.

Referring to FIG. 11, one side of the first plasma display panel 1100 and one side of the second plasma display panel 1110 are connected by hinges 1120.

In addition, the first data driver 1140 is disposed under the first plasma display panel 1100 to apply a driving signal to the first address electrode X of the first plasma display panel 1100, and the second data driver 1130 is disposed below the second plasma display panel 1110 to apply a driving signal to the second address electrode X ′ of the second plasma display panel 1110.

In addition, the first sustain driver 1160 may be disposed on the other side of the first plasma display panel 1100, and the second sustain driver 1150 may be disposed on the other side of the second plasma display panel 1110.

Here, although the common scan driver is not shown in FIG. 11, since the common scan driver may be integrally formed with the hinge part 1120, the common scan driver is not illustrated here in FIG. 11.

As such, when the first plasma display panel 1100 and the second plasma display panel 1110 are connected by the hinge portion 1120, the first plasma display panel 1100 and the second plasma display panel 1100 may be connected to each other. The viewing angle of the displayed image can be adjusted in various ways.

11, at least one of the first and second sustain drivers 1160 and 1150 and the first and second data drivers 1040 and 1030 may be the first plasma display panel 1100 or the second plasma display panel 1110. It is also possible to arrange the frame disposed on the back of one or more of the).

Next, FIG. 12 is a view for explaining another example of the form of the driving unit when the first and second plasma display panels are connected to each other by the hinge unit.

Referring to FIG. 12, the first plasma display panel 1200 and the second plasma display panel 1210 are connected to each other by a hinge portion 1230, and the driving unit 1220 also has a first plasma in the form of a board. The hinge panel 1230 is connected between the display panel 1200 and the second plasma display panel 1210.

In this case, as illustrated in FIG. 12, the driving signal generated by the driver 1220 is transmitted through a signal transmission line (not shown) formed in the hinge part 1230 to display the first plasma display panel 1200 and the second plasma display panel 1210. It can be applied to the electrode of.

In addition, when the shape of the driving unit is set as shown in FIG. 12, one or more viewing angles of the first plasma display panel 1200 and the second plasma display panel 1210 may be more variously and easily adjusted. In addition, the aesthetics of the plasma display device can be made more beautiful.

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 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 following claims rather than the foregoing description, and the meaning and scope of the claims. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described in detail above, the plasma display apparatus of the present invention has an effect of reducing the manufacturing cost by applying a driving signal to one of the electrodes of the plurality of plasma display panels in common.

Claims (4)

A first plasma display panel and a second plasma display panel including electrodes; A driving unit which applies a driving signal to the electrode of the first plasma display panel and the electrode of the second plasma display panel in common; Plasma display device comprising a. The method of claim 1, The first plasma display panel includes a first scan electrode and a first sustain electrode parallel to each other and a first address electrode crossing the first scan electrode and the first sustain electrode, The second plasma display panel includes a second scan electrode and a second sustain electrode parallel to each other, and a second address electrode crossing the second scan electrode and the second sustain electrode, The driving unit A common scan driver which applies a driving signal to the first scan electrode and the second scan electrode in common; A common sustain driver which applies a driving signal to the first sustain electrode and the second sustain electrode in common; And A common data driver which applies a driving signal to the first address electrode and the second address electrode in common; Plasma display device comprising a. The method of claim 1, The first plasma display panel includes a first scan electrode and a first sustain electrode parallel to each other and a first address electrode crossing the first scan electrode and the first sustain electrode, The second plasma display panel includes a second scan electrode and a second sustain electrode parallel to each other, and a second address electrode crossing the second scan electrode and the second sustain electrode, The driving unit A common scan driver which applies a driving signal to the first scan electrode and the second scan electrode in common; A common sustain driver which applies a driving signal to the first sustain electrode and the second sustain electrode in common; A first data driver applying a driving signal to the first address electrode; And A second data driver applying a driving signal to the second address electrode; Plasma display device comprising a. The method of claim 1, And the first plasma display panel and the second plasma display panel are connected to each other by a hinge part.

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