KR101672415B1 - Plasma Display Panel and Multi Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel and a multi-plasma display panel.
A plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to oppose the front substrate, and barrier ribs partitioning a plurality of discharge cells between the front substrate and the rear substrate, The size of the first discharge cell among the plurality of discharge cells arranged in the second discharge cell may be smaller than the size of the second discharge cell arranged outside the first discharge cell.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plasma display panel and a multi-

The present invention relates to a plasma display panel and a multi-plasma display panel.

The plasma display panel includes a phosphor layer formed in a discharge cell (cell) partitioned by barrier ribs, and includes a plurality of electrodes.

When a driving signal is supplied to the electrodes of the plasma display panel, a discharge is generated by the driving signal supplied in the discharge cell. Here, when a discharge is caused by a drive signal in a discharge cell, a discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet ray emits a phosphor formed in the discharge cell to emit visible light . An image is displayed on the screen of the plasma display panel by the visible light.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a plasma display panel and a multi-plasma display panel in which the size of a discharge cell is changed according to the position of a panel.

A plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to oppose the front substrate, and barrier ribs partitioning a plurality of discharge cells between the front substrate and the rear substrate, The size of the first discharge cell among the plurality of discharge cells arranged in the second discharge cell may be smaller than the size of the second discharge cell arranged outside the first discharge cell.

Also, the second discharge cell may be the outermost discharge cell.

Another plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to face the front substrate, and barrier ribs partitioning a plurality of discharge cells between the front substrate and the rear substrate, The size of the discharge cells in the first area within the active area may be smaller than the size of the discharge cells in the second area outside the first area within the effective area.

At least the outermost discharge cells may be disposed in the second region.

In the multi-plasma display panel according to the present invention, the plurality of plasma display panels may include a front substrate, a rear substrate disposed opposite to the front substrate, And a barrier rib separating a plurality of discharge cells between the front substrate and the rear substrate, wherein a size of the discharge cells at a boundary portion of any two of the plasma display panels is equal to a size of the discharge cells .

Further, another multi-plasma display panel according to the present invention includes a first panel and a second panel,

And a second panel disposed adjacent to the first panel, wherein the first panel and the second panel each have a front substrate, a rear substrate disposed to face the front substrate, and a second substrate disposed between the front substrate and the rear substrate Wherein a size of the discharge cell in the first area of the first panel is smaller than a size of the discharge cell in the second area closer to the second panel than the first area, And the size of the discharge cells in the third area of the second panel may be smaller than the size of the discharge cells in the fourth area adjacent to the first panel in the third area.

At least the outermost discharge cells of the first panel may be disposed in the second region, and at least the outermost discharge cells of the second panel may be disposed in the fourth region.

Further, another multi-plasma display panel according to the present invention includes a first panel, a second panel disposed adjacent to the first panel, a third panel disposed adjacent to the first panel, A second panel, a third panel, and a fourth panel, wherein the first panel, the second panel, the third panel, and the fourth panel each have a front substrate on which a first electrode is disposed, And a barrier rib separating a plurality of discharge cells between the front substrate and the rear substrate, wherein the barrier ribs are formed in a tenth region of the first panel, The size of the discharge cell may be set to a twentieth region closer to the second panel than the tenth region in a direction parallel to the first electrode and a twentieth region closer to the second panel than the tenth region in a direction parallel to the second electrode. The third panel may be less than the size of the discharge cells 30 in the adjacent second regions.

At least the outermost discharge cells may be disposed in the twentieth region and the thirtieth region.

The discharge cells arranged in the twentieth region may have a larger width in a direction parallel to the first electrodes than the discharge cells arranged in the tenth region.

The discharge cells arranged in the 30th region may have a larger width in a direction parallel to the second electrodes than the discharge cells arranged in the 10th region.

The discharge cells arranged in the 30th region may have a larger width in a direction parallel to the first electrodes than the discharge cells arranged in the 10th region.

The plasma display panel and the multi-plasma display panel according to the present invention can reduce the size of the bezel region or the seam region visually by differently applying the size of the discharge cell according to the position of the panel have.

1 to 3 are views for explaining a structure and a driving method of a plasma display panel;
FIGS. 4 to 15 are views for explaining the structure of a discharge cell; FIG. And
16 to 22 are views for explaining a multi-plasma display panel.

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

FIGS. 1 to 3 are views for explaining a structure and a driving method of a plasma display panel.

The plasma display panel may implement an image with a frame including a plurality of subfields.

1, the plasma display panel includes a rear substrate 211 on which a plurality of second electrodes 213, X intersecting a plurality of first electrodes 202 (Y), 203 (Z) are formed can do.

Here, the first electrodes 202 and 203 may include the scan electrodes 202 and Y and the sustain electrodes 203 and Z, and the second electrode 211 may be referred to as an address electrode.

The discharge currents of the scan electrodes 202 and the sustain electrodes 203 and the sustain electrodes 203 are applied to the front substrate 201 on which the scan electrodes 202 and the sustain electrodes 203 and the sustain electrodes Z are formed. ) And the sustain electrodes 203, Z may be disposed on the lower dielectric layer 204. In this case,

The front substrate 201 on which the upper dielectric layer 204 is formed may be provided with a protective layer 205 for facilitating discharge conditions. The protective layer 205 may include a material having a high secondary electron emission coefficient, for example, a magnesium oxide (MgO) material.

Address electrodes 213 and X are formed on the rear substrate 211 and address electrodes 213 and X are formed on the rear substrate 211 on which the address electrodes 213 and X are formed. The lower dielectric layer 215 may be formed.

Barrier ribs 212 such as a stripe type, a well type, a delta type, and a honeycomb type for partitioning a discharge space, that is, a discharge cell, are formed on an upper portion of the lower dielectric layer 215 . Accordingly, a first discharge cell that emits red (R) light, a second discharge cell that emits blue (B) light, and a second discharge cell that emits green (Green) light are provided between the front substrate 201 and the rear substrate 211, : G) a third discharge cell that emits light, or the like.

The barrier rib 212 includes a first barrier rib 212b and a second barrier rib 212a. The height of the first barrier rib 212b and the height of the second barrier rib 212a may be different from each other.

On the other hand, in the discharge cell, the address electrode 213 may cross the scan electrode 202 and the sustain electrode 203. That is, the discharge cells are formed at the intersections of the address electrodes 213 with the scan electrodes 202 and the sustain electrodes 203.

A predetermined discharge gas may be filled in the discharge cells partitioned by the barrier ribs 212.

In addition, in the discharge cells partitioned by the barrier ribs 212, a phosphor layer 214 that emits visible light for image display upon address discharge may be formed. For example, a first phosphor layer for generating red light, a second phosphor layer for generating blue light, and a third phosphor layer for generating green light may be formed.

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

An image frame for realizing image gradation in a plasma display panel will be described below.

Referring to FIG. 2, a frame for implementing a gray level of an image may include a plurality of subfields (SF1 to SF8).

In addition, a plurality of subfields are divided into an address period for selecting a discharge cell in which a discharge will not occur or a discharge period for selecting a discharge cell in which a discharge occurs, and a sustain period for implementing a gray level according to the number of discharges Period).

For example, when an image is to be displayed at 256 gray levels, one frame is divided into eight subfields (SF1 to SF8) as shown in FIG. 2, and eight subfields (SF1 to SF8) And a sustain period.

Alternatively, at least one of the plurality of subfields of the frame may further include a reset period for initialization.

In addition, at least one of the plurality of subfields of the frame may not include a sustain period.

On the other hand, the number of the sustain signals supplied in the sustain period may be adjusted to set the weight of the corresponding subfield. That is, a predetermined weight can be given to each subfield using the sustain period. For example, the weight of the first subfield is set to 2 ⁰ , and the weight of the second subfield is set to 2 ¹ , so that the weight of each subfield is 2 ⁿ (n = 0, 1, 2, 3, 4, 5, 6, 7). By adjusting the number of the sustain signals supplied in the sustain period of each sub-field in accordance with the weight value in each sub-field, it is possible to implement various image gradations.

2, only one image frame is composed of eight subfields. However, the number of subfields forming one image frame can be changed variously. For example, one video frame may be composed of 12 sub-fields from the first sub-field to the 12th sub-field, or one video frame may be composed of 10 sub-fields.

In FIG. 2, the subfields are arranged according to the increasing order of weight in one image frame. Alternatively, in one image frame, the subfields may be arranged in decreasing order of weight. Alternatively, The subfields may be arranged regardless of the subfields.

At least one of the plurality of subfields included in the frame is a selective erase subfield (SE), and at least one of the plurality of subfields may be a selective write subfield (SW) Do.

When one frame includes at least one selective erasing sub-field and a selective writing sub-field, the first sub-field or the first sub-field and the second sub-field among the plurality of sub-fields of the frame are selective writing sub-fields, And the remainder may be a selective erasing sub-field.

Here, the selective erase sub-field is a sub-field for turning off the discharge cells supplied with the data signal Data to the address electrodes in the sustain period after the address period in the address period.

Such selective erase subfields may include an address period for selecting a discharge cell to be turned off and a sustain period for generating a sustain discharge in a discharge cell not selected in the address period.

The selective writing sub-field is a sub-field in which the discharge cells supplied with the data signal Data to the address electrodes in the address period are turned on in the sustain periods after the address period.

The selective writing subfield may include a reset period for initializing the discharge cells, an address period for selecting the discharge cells to be turned on, and a sustain period for generating a sustain discharge in the discharge cells selected in the address period.

The driving waveform for driving the plasma display panel will be described below.

3, in a reset period (RP) for initializing at least one sub-field among a plurality of sub-fields of a frame, a 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 whose voltage gradually increases and a falling ramp signal Ramp-Down RD whose voltage gradually falls.

For example, the rising ramp signal RU may be supplied to the scan electrode in the set-up period SU of the reset period, and the falling ramp signal RD may be supplied to the scan electrode during the set-down period SD after the set- .

When a rising ramp signal is supplied to the scan electrode, a weak dark discharge (i.e., setup discharge) occurs in the discharge cell due to the rising ramp signal. By this set-up discharge, the distribution of wall charges (Wall Charge) in the discharge cells can be made uniform.

When a falling ramp signal is supplied to the scan electrode after the rising ramp signal is supplied, a weak erase discharge (setdown discharge) occurs in the discharge cell. Due to the set-down discharge, wall charges can be uniformly left in the discharge cells to such an extent that address discharge can occur stably.

In the address period AP after the reset period, a 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 the address period, the scan signal Sc falling from the voltage of the scan reference signal Ybias may be supplied to the scan electrode.

The pulse width of the scan signal supplied to the scan electrodes in the address period of at least one subfield may be different from the pulse width of the scan signals of the other subfields. For example, the width of the scan signal in the subfields positioned later in time may be smaller than the width of the scan signal in the subfields positioned in front. In addition, the decrease in the scan signal width according to the arrangement order of the subfields can be made progressively, such as 2.6 mu s, 2.3 mu s, 2.1 mu s, 1.9 mu s, or the like, or 2.6 mu s, 2.3 mu s, 1.9 占 퐏, 1.9 占 퐏, and so on.

As described above, 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 such a scan signal and a data signal are supplied, a wall voltage due to wall charges generated in the reset period and a voltage difference between the scan signal and the data signal are added, and an address discharge may be generated in the discharge cell to which the data signal is supplied .

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

In the sustain period SP after the address period, the sustain signal SUS may be supplied to at least one of the scan electrode and the sustain electrode. For example, the sustain signal may be alternately supplied to the scan electrode and the sustain electrode.

When the sustain signal is supplied, the wall voltage in the discharge cell and the sustain voltage (Vs) of the sustain signal are added to the discharge cells selected by the address discharge. When the sustain signal is supplied, a sustain discharge is generated between the scan electrode and the sustain electrode Discharge may occur.

FIGS. 4 to 15 are views for explaining the structure of a discharge cell. FIG. Hereinafter, the description of the parts described in detail above will be omitted.

In the present invention, the size of the discharge cell in the central region of the panel may be larger than the size of the discharge cell in the outer region of the panel.

In other words, the size of the discharge cells partitioned by the barrier ribs 212 in the first area of the panel may be smaller than the size of the discharge cells in the second area outside the first area. Here, the size of the discharge cell may be defined as the area of the discharge cell partitioned by the barrier rib 212.

For example, as shown in FIGS. 4 to 5, the width W1 of the discharge cells in the central region of the panel in the direction crossing the address electrodes 213 is smaller than the width W2 of the discharge cells in the outer region of the panel . That is, the width W1 of the discharge cells in the central region of the panel in the horizontal direction may be smaller than the width W2 of the discharge cells in the peripheral region of the panel.

Preferably, at least the width of the outermost discharge cells of the panel in the direction crossing the address electrodes 213 may be larger than the width of the discharge cells arranged in the central area of the panel.

Hereinafter, the second discharge cell 230 is disposed outside the first discharge cell 240, and the second discharge cell 230 has a size (for example, a width in the horizontal direction, W2) 240) (for example, width in the transverse direction, W1).

6, the size of the plurality of second discharge cells 230 disposed in the outer region of the panel may be greater than the size of the first discharge cells 240 disposed in the central region of the panel. That is, the number of the second discharge cells 230 having a relatively large size is set to a plurality.

As described above, the reason why the size of the discharge cells 230 in the outer region of the panel is made larger than the size of the discharge cells 240 in the central region of the panel will be described below.

The manufacturing process of the plasma display panel may include an impurity gas exhaust process and a discharge gas infusion process.

The impurity gas remaining in the space between the front substrate 201 and the rear substrate 211 can be discharged to the outside by using an exhausting means such as a vacuum pump after the front substrate 201 and the rear substrate 211 are bonded together . This can be referred to as an impurity gas exhaust process.

Thereafter, a discharge gas may be injected into a space between the front substrate 201 and the rear substrate 211. This can be referred to as a discharge gas injection process.

In the exhaust process, the degree of impurity gas exhaust may vary depending on the position where the exhaust means is connected, that is, the position of the exhaust hole. For example, in the outer region of the panel, the possibility of impure gas remaining due to structural characteristics is greater than in the central region of the panel. Further, impurity gas is more likely to remain in the corner portion of the panel.

In addition, the uniformity of the discharge gas injected in the injection process may vary depending on the position of the panel. For example, since the discharge gas can circulate easily in the central region of the panel, the uniformity of the discharge gas is relatively high. On the other hand, in the outer region of the panel, the uniformity of the discharge gas may be relatively low compared to the central region of the panel due to the closed structural characteristics.

As a result, discharge may become unstable in the discharge cells arranged in the outer region of the panel, and even discharge cells arranged in the outer region of the panel may be blurred.

On the other hand, when the size of the discharge cells 230 disposed in the outer region of the panel is larger than the size of the discharge cells 240 disposed in the central region of the panel as in the present invention, the discharge is stable in the discharge cells arranged in the outer region .

It is possible to adjust the width of the barrier ribs 212 in order to make the size of the discharge cells 230 disposed on the outer side of the panel larger than the size of the discharge cells 240 disposed in the central region of the panel.

For example, as shown in FIG. 7, by reducing the width of the barrier ribs 212 disposed in the outer area of the panel, that is, the second area A2, the size of the second discharge cells 230 disposed in the second area A2 of the panel That is, by increasing the area, the area of the second discharge cell 230 can be made larger than the area of the first discharge cell 240. Preferably, the barrier rib 212 includes a first barrier rib 212a parallel to the first electrode (not shown) and a second barrier rib 212b parallel to the second electrode (not shown) A2, the width of the second bank 212b can be reduced. The width T2 of the second partition 212b in the second area A2 of the panel can be smaller than the width T1 of the second partition 212b in the first area A1 of the panel The width W2 of the second discharge cells 230 arranged in the second area A2 in the direction parallel to the first barrier ribs 212a is set to the first discharge cells arranged in the first area A1 240 may be wider than the width W1 in the direction parallel to the first partition 212a.

7, by increasing the size of the second discharge cell 230 by reducing the width of the second barrier rib 212b, the interval P between the centers of the two discharge cells adjacent to each other can be maintained substantially equal to each other have. For example, the interval P between the centers of the adjacent two second discharge cells 230 and the interval P between the centers of two adjacent first discharge cells 240 are substantially equal to each other You can. Here, the interval P between the centers of two adjacent discharge cells can be referred to as a pitch of the discharge cells.

Alternatively, it is possible to gradually increase the size of the second discharge cell 230 in the second area A2 on the outer side of the panel as shown in FIG.

For example, in the second-first area A2-1 outside the first area A1 of the panel, the width W2 in the direction parallel to the first electrode of the discharge cell is smaller than the width W2 of the discharge cell in the first area A1 May be greater than the width W1 in the direction parallel to the first electrode of the first electrode. In the second-second area A2-2 outside the second-first area A2-1 of the panel, the width W3 in the direction parallel to the first electrode of the discharge cell is equal to the second-first area A2 -1) in a direction parallel to the first electrode of the discharge cell. That is, the size of the discharge cell gradually increases toward the outer edge of the panel.

9 to 10, the size of the discharge cells in the outer area, that is, the second discharge cells 230 in the vertical direction of the panel, that is, in the direction parallel to the address electrodes 213, May be greater than the size of the cell 240.

As described above, even when the size of the discharge cell is adjusted in the vertical direction of the panel, it is possible to stabilize the discharge of the second discharge cell 230 in the outer area of the panel.

11, in order to increase the size of the second discharge cells 230 arranged in the outer area in the vertical direction of the panel to be larger than the size of the first discharge cells 240, the first barrier ribs 212a Can be adjusted.

For example, the width T4 of the first barrier rib 212a disposed in the second area A2 outside the first area A1 of the panel is defined as the first barrier rib 212a disposed in the first area A1, The width L2 of the discharge cells arranged in the second area A2 in the direction parallel to the second barrier ribs 212b can be made smaller than the width T3 of the discharge cells arranged in the first area A1, (L1) in a direction parallel to the second bank 212b.

As described above, by decreasing the width of the first barrier rib 212a and increasing the size of the discharge cells arranged in the second region A2, the interval between the centers of the two discharge cells adjacent to each other in the direction parallel to the second barrier rib 212b (P1) can remain substantially the same.

12 to 13, in order to increase the size of the second discharge cell 230 disposed in the outer region in the vertical direction of the panel to be larger than the size of the first discharge cell 240, It is possible to adjust the width of the partition wall 212b.

For example, the width of the second barrier rib 212b disposed in the second area A2 outside the first area A1 of the panel is gradually decreased to gradually increase the size of the second discharge cell 230 It is possible.

In other words, as shown in FIGS. 12 to 13, in the second-1 region A2-1 outside the first region A1 of the panel in the direction parallel to the second electrode, that is, in the direction parallel to the second barrier rib 212b The width W2 in the direction parallel to the first electrode of the discharge cell may be larger than the width W1 in the direction parallel to the first electrode of the discharge cell of the first region A1. In addition, in the second-second region A2-2 outside the second-first region A2-1 of the panel in the direction parallel to the second electrode, the width W3 in the direction parallel to the first electrode of the discharge cell is May be larger than the width W2 in the direction parallel to the first electrode of the discharge cell of the second-first region A2-1. That is, the size of the discharge cell gradually increases toward the outer edge of the panel in a direction parallel to the second electrode.

Alternatively, as shown in Fig. 14, the size of the discharge cells arranged on the outer periphery of the panel in the vertical direction and the horizontal direction of the panel can be made larger than the size of the discharge cells arranged in the central portion of the panel.

For example, the vertical direction of the panel is a direction parallel to the short side SS of the rear substrate 211, and the horizontal direction of the panel is a direction parallel to the long side (LS) of the rear substrate 211 lets do it.

In this case, the size of the discharge cells arranged on the outer side of the panel in the long side (LS) direction of the rear substrate 211 is larger than the size of the discharge cells arranged in the central part of the panel, The size of the discharge cell disposed on the outer periphery of the panel in the direction of the discharge cell is larger than the size of the discharge cell arranged in the central portion of the panel.

15, the size of the discharge cell 240 disposed in the first area A1 of the panel is the same as the size of the discharge cell 240 disposed in the second area A2 outside the first area A1 of the panel Size.

In this case, the discharge can be stabilized in the discharge cells arranged in the outer region in the vertical direction and the horizontal direction of the panel.

16 to 22 are views for explaining a multi-plasma display panel. Hereinafter, the description of the parts described in detail above will be omitted. For example, the features of the plasma display panel described in detail with reference to FIGS. 1 to 15 are all applicable to the following multi-plasma display panel.

Referring to FIG. 16, the multi-plasma display panel 10 may include a plurality of plasma display panels 100, 110, 120, and 130 disposed adjacent to each other.

The first 1-1 driving part 101 and the 1-2 driving part 102 can supply driving signals to the first panel 100 of the plurality of plasma display panels 100-130. Here, the 1-1 driving unit 101 and the 1-2 driving unit 102 may be merged into one integrated driving unit.

In addition, the second panel driving unit 111 and the second driving unit 112 can supply driving signals to the second panel 110.

As described above, it is possible to set the driving signals to be supplied to the respective PDPs 100, 110, 120, and 130, respectively.

19, the first main frame 2700 is disposed on the rear surface of the first panel 100, that is, on the rear surface of the rear substrate of the first panel 100, A second main frame 2710 is disposed on the rear surface of the second panel 110. A third main frame 2720 is disposed on the rear surface of the third panel 120. On the rear surface of the fourth panel 130, 4 main frame 2730 can be disposed.

Driving boards 101 to 132 for supplying driving signals to the first, second, third, and fourth panels 100 to 130 may be disposed in the first, second, third, and fourth main frames 2700 to 2730.

Seam portions 140 and 150 may be formed between adjacent two plasma display panels. The seam portions 140 and 150 may be referred to as a region between adjacent two plasma display panels.

Since the multi-plasma display device 10 implements an image by disposing the individual plasma display panels 100 to 130 adjacent to each other, a seam 140 or 150 is formed between the adjacent two plasma display panels 100 to 130 .

A manufacturing process of the multi-plasma display panel will be described below.

First, as shown in FIG. 17A, a layer 400 of a real layer may be formed on the edge of the rear substrate 211.

Here, only the case where the seal layer 400 is formed on the rear substrate 211 is shown, but it is possible to form the seal layer 400 on at least one of the front substrate 201 and the rear substrate 211.

Thereafter, the front substrate 201 and the rear substrate 211 may be bonded together as shown in FIG. 17 (b).

Thereafter, as shown in FIG. 17C, an exhaust tip 220 is connected to the exhaust hole 200, and the exhaust pump 230 is connected to the exhaust tip 220. It is also possible to discharge the impurity gas remaining in the discharge space between the front substrate 201 and the rear substrate 211 to the outside by using the exhaust pump 230 and to discharge argon (Ar), neon (Ne) (Xe) or the like can be injected into the discharge space.

Thereafter, the front substrate 201 and the rear substrate 211 outside the seal layer 400 can be cut according to a predetermined cutting line (CL) as shown in FIG. 18 (a). Preferably, when cutting the outer portion of the seal layer 400, a part of the seal layer 400 may also be cut together. In this case, the size of the bezel region can be reduced by reducing the size of the portion where the image is not displayed as shown in FIG. 18 (b), thereby reducing the size of the Seam portions 140 and 150 of the multi- You can.

20, the sizes of the discharge cells arranged in the boundary area (BA) of the two panels (1, 2) adjacent in the horizontal direction, that is, in the direction crossing the address electrodes 213, , ≪ / RTI > (2)).

In other words, when the multi-plasma display panel includes the adjacent first panel (1) and second panel (2), the size of the first discharge cell 240A in the first area of the first panel (1) May be smaller than the size of the second discharge cell 230A in the second area closer to the second panel (2) than the first area.

The size of the first discharge cell 240B in the third region of the second panel (2) is larger than the size of the second discharge cell 230B in the fourth region adjacent to the first panel (1) .

At least the outermost discharge cells of the first panel (1) are arranged in the second region, and the outermost discharge cells of at least the second panel (2) are arranged in the fourth region. In addition, not only the outermost discharge cells of the first panel (1) but also at least one discharge cell adjacent to the outermost discharge cell are further disposed in the second region, and at least the outermost discharge cells of the second panel (2) Not only the cell but also at least one discharge cell adjacent to the outermost discharge cell can be disposed.

Seam portions between adjacent two panels in a multi-plasma display panel may cause deterioration of image quality of a multi-plasma display panel. Accordingly, in the multi-plasma display panel, in order to reduce the width of the seam portion, the size of the outer region of the outermost discharge cell in the boundary region BA between the two panels is reduced.

On the other hand, when the size of the outermost region of the outermost discharge cell is reduced in the boundary region BA between the two panels, the possibility of impurity gas remaining in the boundary portion BA is further increased, The possibility of occurrence of a phenomenon such as an uneven discharge due to unstable discharge in the arranged discharge cells may be greatly increased. In this case, since the images formed on the two panels are discontinuously displayed, the image quality of the image implemented on the multi-plasma display panel may deteriorate.

On the other hand, the size of the second discharge cells 230A and 230B arranged in the boundary area BA of the two adjacent panels (1 and 2) In the case where the size of the first discharge cells 240A and 240B is larger than the size of the first discharge cells 240A and 240B, the discharge can be stabilized at the boundary BA so that the images formed on the adjacent two panels (1 and 2) . Accordingly, the image quality of the image implemented by the multi-display panel can be improved.

Therefore, the plasma display panel described in detail with reference to FIGS. 1 to 15 may be preferably applied to a multi-plasma display panel. Since the contents of FIGS. 1 to 15 have already been described in detail, further explanation is omitted.

21, the sizes of the second discharge cells 230A and 230B in the boundary area BA between the two panels (1 and 2) adjacent in the vertical direction, that is, in the direction parallel to the address electrodes 213, May be larger than the size of the first discharge cells 240A, 240B in the central region of the first discharge cells (1, 2). Even in this case, it is possible to improve the image quality of the image implemented in the multi-plasma display panel.

Alternatively, the size of the second discharge cells 230A and 230B in the border regions of the two panels in the vertical direction and the horizontal direction may be made larger than that of the first discharge cells 240A and 240B in the central region of each panel It is possible.

For example, as shown in FIG. 22, the multi-plasma display panel includes a first panel (1), a second panel (2) disposed adjacent to the first panel (1) A third panel (3), a second panel (2), and a fourth panel (4) arranged adjacent to the third panel (3).

In this case, the size of the first discharge cell 240 in the tenth area of the first panel (1) is larger than the size of the twentieth area closer to the second panel (2) than the tenth area in the direction parallel to the first electrode, May be smaller than the size of the second discharge cell 230 in the thirtieth region adjacent to the third panel (3) than the tenth region in the direction parallel to the electrodes. At least the outermost discharge cells may be disposed in the twentieth region and the thirtieth region.

Further, the discharge cells arranged in the twentieth region can have a larger width in the direction parallel to the first electrodes, as compared with the discharge cells arranged in the tenth region. For example, as in the case of FIG. 7, the width of the second barrier rib 212b may be reduced in the twentieth region to increase the size of the discharge cells in the twentieth region.

Further, the discharge cells arranged in the thirtieth region can have a larger width in the direction parallel to the second electrodes as compared with the discharge cells arranged in the tenth region. For example, as in the case of FIG. 11, the width of the first barrier rib 212a may be reduced in the 30th region to increase the size of the discharge cells in the 30th region.

Further, the discharge cells arranged in the thirtieth region can have a larger width in the direction parallel to the first electrodes, as compared with the discharge cells arranged in the tenth region. For example, as in the case of FIG. 12, the width of the second barrier rib 212b may be reduced in the 30th region to increase the size of the discharge cells in the 30th region. The above configuration can also be applied to the second, third, and fourth panels (2, 3, and 4).

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

It should be understood, therefore, that the embodiments described above are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, And all changes or modifications derived from equivalents thereof should be construed as being included within the scope of the present invention.

Claims (12)

A front substrate;
A rear substrate disposed to face the front substrate; And
And a plurality of second discharge cells arranged between the front substrate and the rear substrate, the first discharge cells being arranged in an active area of the panel, and the second discharge cells being arranged in an outer peripheral area of the panel, And barrier ribs partitioning the discharge cells,
Wherein the second discharge cells are larger in size than the first discharge cells and larger in size away from the effective area of the panel. The method according to claim 1,
And the second discharge cell is an outermost discharge cell. A front substrate;
A rear substrate disposed to face the front substrate; And
And a barrier rib separating a plurality of discharge cells between the front substrate and the rear substrate,
The size of the discharge cells in the first area within the effective area of the panel is smaller than the size of the discharge cells in the second area outside the first area in the effective area,
Wherein the discharge cells arranged in the second region are larger in size than the first region. The method of claim 3,
And at least the outermost discharge cells are arranged in the second region. In a multi-plasma display panel including a plurality of adjacent plasma display panels,
The plurality of plasma display panels
A front substrate;
A rear substrate disposed to face the front substrate; And
And a barrier rib separating a plurality of discharge cells between the front substrate and the rear substrate,
The size of the discharge cell at the boundary portion of any two of the plasma display panels is larger than the size of the discharge cells at other portions,
And the size of the discharge cells is gradually increased toward the boundary portion. A first panel; And
A second panel disposed adjacent to the first panel;
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The first panel and the second panel are
A front substrate;
A rear substrate disposed to face the front substrate; And
And a barrier rib separating a plurality of discharge cells between the front substrate and the rear substrate,
Wherein the first panel includes a first area disposed in a central region of the first panel and a second area disposed in proximity to the second panel, excluding the first area,
Wherein the second panel includes a third area disposed in a central area of the second panel and a fourth area disposed in proximity to the first panel, excluding the third area,
The size of the discharge cells arranged in the second region is larger than the size of the discharge cells arranged in the first region,
Wherein a size of the discharge cells arranged in the fourth region is larger than a size of the discharge cells arranged in the third region, and the size of the discharge cells is larger as the discharge cells are closer to the first panel. The method according to claim 6,
At least the outermost discharge cells of the first panel are arranged in the second area,
And at least the outermost discharge cells of the second panel are disposed in the fourth region. A first panel;
A second panel disposed adjacent to the first panel;
A third panel disposed adjacent to the first panel; And
And a fourth panel disposed adjacent to the second panel and the third panel,
Wherein the first panel, the second panel, the third panel, and the fourth panel are
A front substrate on which a first electrode is disposed;
A rear substrate disposed to face the front substrate and having a second electrode crossing the first electrode; And
And a barrier rib separating a plurality of discharge cells between the front substrate and the rear substrate,
Wherein the first panel includes a tenth region disposed in a central region of the first panel, a twentieth region disposed closer to the second panel than the tenth region in a direction parallel to the first electrode, And a thirtieth region disposed closer to the third panel than the tenth region in a side-by-side direction,
The size of the discharge cells arranged in the twentieth region is larger than the size of the discharge cells arranged in the tenth region,
Wherein the size of the discharge cells arranged in the 30th region is larger than the size of the discharge cells arranged in the 10th region, and the size of the discharge cells is larger in the vicinity of the third panel. 9. The method of claim 8,
And at least the outermost discharge cells are arranged in the twentieth region and the thirtieth region. 9. The method of claim 8,
Wherein the discharge cells arranged in the twentieth region are wider in a direction parallel to the first electrodes than the discharge cells arranged in the tenth region. 9. The method of claim 8,
Wherein the discharge cells arranged in the 30th region are wider in a direction parallel to the second electrodes than the discharge cells arranged in the 10th region. 9. The method of claim 8,
Wherein the discharge cells arranged in the 30th region are wider in a direction parallel to the first electrodes than the discharge cells arranged in the 10th region.

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