KR20110083920A - Plasma display panel and multi plasma display panel - Google Patents

Abstract

PURPOSE: A plasma display panel and a multi plasma display panel are provided to apply a discharge cell size with rank according to a location of a panel, thereby enabling to reduce the size of a seam area or bezel area. CONSTITUTION: A rear substrate(211) is arranged to be faced with a front substrate. A partition wall(212) divides a plurality of discharge cells between the front substrate and rear substrate. The size of a first discharge cell among a plurality of discharge cells is smaller than the size of a second discharge cell arranged in outer side with respect to the first discharge cell. An outermost discharge cell is arranged at least in a second region. A protective layer(205) facilitating a discharge condition is formed in the front substrate(201).

Description

Plasma Display Panel and Multi Plasma Display Panel

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 divided by a partition wall, and also includes a plurality of electrodes.

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

The present invention relates to a plasma display panel and a multi-plasma display panel in which the size of the discharge cell is changed according to the position of the panel.

The plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to face the front substrate, and partition walls partitioning a plurality of discharge cells between the front substrate and the rear substrate, and an active area of the panel. The size of the first discharge cell of the plurality of discharge cells disposed in the) may be smaller than the size of the second discharge cell disposed on the outer side than the first discharge cell.

In addition, the second discharge cell may be the outermost discharge cell.

In addition, another plasma display panel according to the present invention includes a front substrate, a rear substrate disposed to face the front substrate, and partition walls for partitioning a plurality of discharge cells between the front substrate and the rear substrate, the effective area of the panel The size of the discharge cell in the first area in the active area may be smaller than the size of the discharge cell in the second area outside the first area in the effective area.

In addition, at least an outermost discharge cell may be disposed in the second region.

In addition, the multi-plasma display panel according to the present invention is a multi-plasma display panel including a plurality of plasma display panel disposed adjacent, each of the plurality of plasma display panel is disposed on the front substrate, the rear substrate facing each other And a partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate, wherein the size of the discharge cells at the boundary of any two plasma display panels is the size of the discharge cells at the other portions. Can be greater than

In addition, another multi-plasma display panel according to the present invention comprises a first panel and

And a second panel disposed adjacent to the first panel, wherein the first panel and the second panel each include a front substrate, a rear substrate disposed to face the front substrate, and between the front substrate and the rear substrate. A partition wall defining a plurality of discharge cells, wherein the size of the discharge cells in the first area of the first panel is greater than the size of the discharge cells in the second area closer to the second panel than the first area; The size of the discharge cell in the third region of the second panel may be smaller than the size of the discharge cell in the fourth region closer to the first panel than the third region.

In addition, at least an outermost discharge cell of the first panel may be disposed in the second region, and at least an outermost discharge cell of the second panel may be disposed in the fourth region.

In addition, 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 and the second panel and the first panel. And a fourth panel disposed adjacent to the third panel, wherein the first panel, the second panel, the third panel, and the fourth panel are respectively opposed to the front substrate and the front substrate on which the first electrode is disposed. A rear substrate disposed on a second electrode crossing the first electrode, and a partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate, wherein the barrier rib partitions a plurality of discharge cells; The size of the discharge cell is greater than the tenth region in the direction parallel to the first electrode and the 20th region closer to the second panel than the tenth region and in the 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.

In addition, at least an outermost discharge cell may be disposed in the twentieth region and the thirtieth region.

In addition, the discharge cells disposed in the twentieth region may have a greater width in the direction parallel to the first electrode than the discharge cells disposed in the tenth region.

In addition, the discharge cells disposed in the thirtieth region may have a greater width in a direction parallel to the second electrode than the discharge cells disposed in the tenth region.

In addition, the discharge cells disposed in the thirtieth region may have a greater width in a direction parallel to the first electrode than the discharge cells disposed in the tenth region.

The plasma display panel and the multi-plasma display panel according to the present invention have an effect of visually reducing the size of the bezel region or the seam region by differentially applying the size of the discharge cell according to the position of the panel. have.

1 to 3 are views for explaining the structure and driving method of the plasma display panel;
4 to 15 are views for explaining the structure of the discharge cell; 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.

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

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

In detail, as illustrated in FIG. 1, the plasma display panel includes a rear substrate 211 on which a plurality of second electrodes 213 and X intersect the plurality of first electrodes 202 (Y) and 203 (Z). can do.

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

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

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

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

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

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

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

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

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

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

An image frame for implementing gradation of an image in a plasma display panel is described below.

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

In addition, the plurality of subfields may include a sustain period for implementing gradation according to an address period and a number of discharges for selecting discharge cells in which discharge cells will not occur or discharge cells in which discharge occurs. Period) may be included.

For example, in case of displaying an image with 256 gray levels, for example, one frame is divided into eight subfields SF1 to SF8 as shown in FIG. 2, and each of the eight subfields SF1 to SF8 is an address. It can include a period and a sustain period.

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

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

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

In FIG. 2, only one image frame is composed of eight subfields. However, the number of subfields constituting one image frame may be variously changed. For example, one video frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one video frame may be configured with 10 subfields.

In addition, in FIG. 2, subfields are arranged in an order of increasing weight in one image frame. Alternatively, subfields may be arranged in an order of decreasing weight in one image frame. Subfields may be arranged regardless.

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

If one frame includes at least one selective erase subfield and an optional write subfield, the first subfield or the first and second subfields of the plurality of subfields of the frame are the selective write subfields, It may be desirable for the remainder to be selective erasure subfields.

Here, the selective erasing subfield is a subfield that turns off the discharge cells supplied with the data signal Data to the address electrodes in the address period in the sustain period after the address period.

The selective erasure subfield may include an address period for selecting a discharge cell to be turned off and a sustain period for generating sustain discharge in discharge cells not selected in the address period.

The selective write subfield is a subfield that turns on the discharge cells supplied with the data signal Data to the address electrodes in the address period in the sustain period after the address period.

The selective write 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 sustain discharge in the discharge cells selected in the address period.

A driving waveform for driving the plasma display panel is as follows.

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

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

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

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

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

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

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

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

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

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

In the sustain period SP after the address period, the sustain signal SUS may be 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.

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

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

In other words, the size of the discharge cells partitioned by the partition wall 212 in the first region of the panel may be smaller than the size of the discharge cells in the second region outside the first region. Here, the size of the discharge cell may be referred to as the area of the discharge cell partitioned by the partition wall 212.

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

Preferably, at least the width of the outermost discharge cell of the panel in the direction crossing the address electrode 213 may be larger than the width of the discharge cell disposed in the middle region of the panel.

Hereinafter, the second discharge cell 230 is disposed outside the first discharge cell 240, and the size (eg, width in the horizontal direction, W2) of the second discharge cell 230 is defined as the first discharge cell ( It is assumed that it is larger than the size (for example, width in the horizontal direction, W1) of 240).

Alternatively, as shown in FIG. 6, the sizes of the plurality of second discharge cells 230 disposed in the outer region of the panel may be larger than those of the first discharge cells 240 disposed in the center region of the panel. That is, a plurality of second discharge cells 230 having a relatively large size are set.

As described above, the reason for making the size of the discharge cell 230 in the outer region of the panel larger than the size of the discharge cell 240 in the center region of the panel will be described below.

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

After bonding of the front substrate 201 and the rear substrate 211, the impurity gas remaining in the space between the front substrate 201 and the rear substrate 211 may be discharged to the outside using an exhaust means such as a vacuum pump. . This may be referred to as an exhaust gas discharge process.

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

In the exhaust process, the degree of exhaust of the impure gas may vary depending on the position at which the exhaust means is connected, that is, the position of the exhaust hole. For example, in the outer region of the panel, due to its structural characteristics, there is a greater possibility that impurity gas remains compared to the center region of the panel. In addition, it is more likely that impurity gas remains 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, in the central area of the panel, the discharge gas is easily circulated, so that 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 center region of the panel due to the closed structural characteristics.

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

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 center region of the panel as in the present invention, the discharge is stabilized in the discharge cells arranged in the outer region. You can.

It is possible to adjust the width of the partition wall 212 in order to make the size of the discharge cell 230 disposed at the outer side of the panel larger than the size of the discharge cell 240 disposed at the center area of the panel.

For example, as shown in FIG. 7, the width of the barrier rib 212 disposed in the outer portion of the panel, that is, the second region A2 is reduced, so that the size of the second discharge cell 230 disposed in the second region A2 of the panel is reduced. 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). In A2), the width of the second partition 212b can be reduced. Accordingly, the width T2 of the second partition 212b in the second area A2 of the panel may be smaller than the width T1 of the second partition 212b in the first area A1 of the panel and Accordingly, the first discharge cell (W2) in the direction parallel to the first partition 212a of the second discharge cell 230 disposed in the second region A2 is disposed in the first region A1 ( It may be wider than the width W1 in the direction parallel to the first partition 212a of 240.

As shown in FIG. 7, by decreasing the width of the second partition 212b to increase the size of the second discharge cell 230, the spacing P between the centers of two adjacent discharge cells may be substantially the same. have. For example, the spacing P between the centers of two adjacent second discharge cells 230 and the spacing P between the centers of two adjacent first discharge cells 240 may be substantially equal to each other. It can be. Here, the distance P between the centers of two adjacent discharge cells may be referred to as the pitch of the discharge cells.

Alternatively, as shown in FIG. 8, it is possible to gradually increase the size of the second discharge cell 230 in the second area A2 of the outside of the panel.

For example, in the 2-1 region A2-1 outside the first region A1 of the panel, the width W2 in the direction parallel to the first electrode of the discharge cell is the discharge cell of the first region A1. It may be larger than the width W1 in the direction parallel to the first electrode of. In addition, 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 the second-first area A2. It may be larger than the width W2 in the direction parallel to the first electrode of the discharge cell of -1). That is, the size of the discharge cell may gradually increase toward the outer side of the panel.

9 to 10, the size of the discharge cells in the outer region, that is, the second discharge cells 230 in the vertical direction of the panel, that is, in the direction parallel to the address electrode 213, is the discharge cells of the central region, that is, the first discharge. It may be larger than the size of the cell 240.

As such, 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 region of the panel.

In addition, as shown in FIG. 11, in order to make the size of the second discharge cell 230 disposed in the outer region in the vertical direction of the panel larger than the size of the first discharge cell 240, the first partition 212a of the partitions 212. It is possible to adjust the width of).

For example, the first partition 212a having the width T4 of the first partition 212a disposed in the second region A2 outside the first region A1 of the panel is disposed in the first region A1. The width L2 in the direction parallel to the second partition wall 212b of the discharge cells arranged in the second area A2 is made smaller than the width T3 of the discharge cells arranged in the first area A1. It is possible to make it larger than the width L1 in the direction parallel to the 2nd partition 212b.

As such, by reducing the width of the first partition 212a to increase the size of the discharge cells disposed in the second area A2, the distance between the centers of the two discharge cells adjacent to each other in a direction parallel to the second partition 212b. P1 may remain substantially the same.

Alternatively, as shown in FIGS. 12 to 13, in order to make the size of the second discharge cell 230 disposed in the outer region in the vertical direction of the panel larger than the size of the first discharge cell 240, the second of the partition walls 212. It is possible to adjust the width of the partition 212b.

For example, the size of the second discharge cell 230 is gradually increased by gradually decreasing the width of the second partition 212b disposed in the second area A2 outside the first area A1 of the panel. It is possible.

In other words, as shown in FIGS. 12 to 13, in the 2-1 region A2-1 outside the first region A1 of the panel in a direction parallel to the second electrode, that is, in a direction parallel to the second partition 212b. The width W2 in the direction parallel to the first electrode of the discharge cell may be greater 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 2-2 region A2-2 outside the 2-1 region A2-1 of the panel in a direction parallel to the second electrode, the width W3 in the direction parallel to the first electrode of the discharge cell is determined. It may be larger than the width W2 in the direction parallel to the first electrode of the discharge cell of the 2-1 region A2-1. That is, the size of the discharge cells may gradually increase as the outer side of the panel in the direction parallel to the second electrode.

Alternatively, as illustrated in FIG. 14, it is possible to increase the size of the discharge cells arranged at the outside of the panel in the vertical and horizontal directions of the panel to be larger than the size of the discharge cells arranged at the center of the panel.

For example, the vertical direction of the panel is referred to as a direction parallel to the short side (SS) of the rear substrate 211, and the horizontal direction of the panel is referred to as 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 disposed 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 disposed on the center portion of the panel, and the short side SS of the rear substrate 211. The size of the discharge cells arranged on the outer side of the panel in the direction is larger than the size of the discharge cells arranged on the center portion of the panel.

In other words, as shown in FIG. 15, the size of the discharge cells 240 disposed in the first area A1 of the panel is equal to that of the discharge cells disposed in the second area A2 outside the first area A1 of the panel. It can be smaller than size.

In this case, the discharge can be stabilized in the discharge cells arranged in the outer region in the vertical and horizontal directions 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, all of the features of the plasma display panel described above with reference to FIGS. 1 to 15 may be applied to the following multi-plasma display panel.

Referring to FIG. 16, as shown in (a), 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-first driving unit 101 and the second-first driving unit 102 may supply driving signals to the first panel 100 among the plurality of plasma display panels 100 to 130. Here, the first-first driving unit 101 and the first-second driving unit 102 may be merged into one integrated driving unit.

In addition, the 2-1 driving unit 111 and the 2-2 driving unit 112 may supply driving signals to the second panel 110.

As described above, it is possible to set different driving units to supply driving signals to the plasma display panels 100, 110, 120, and 130, respectively.

For example, in the multi-plasma display apparatus according to the present invention as shown in FIG. 19, the first main frame 2700 is disposed on the rear surface of the first panel 100, that is, the rear substrate of the first panel 100. The second main frame 2710 is disposed on the rear surface of the second panel 110, the third main frame 2720 is disposed on the rear surface of the third panel 120, and the second main frame 2720 is disposed on the rear surface of the fourth panel 130. Four main frames 2730 may 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.

In addition, seam portions 140 and 150 may be formed between two adjacent plasma display panels. The seam portions 140 and 150 may be referred to as an area between two adjacent plasma display panels.

Since the multi-plasma display apparatus 10 implements an image by arranging individual plasma display panels 100 to 130 adjacent to each other, Seam 140 and 150 are formed between two adjacent plasma display panels 100 to 130. Can be.

Looking at the manufacturing process of the multi-plasma display panel as follows.

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

Here, although only the case of forming the seal layer 400 on the back substrate 211 is shown, it is possible to form the seal layer 400 on at least one of the front substrate 201 and the back substrate 211.

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

Thereafter, as illustrated in FIG. 17C, an exhaust tip 220 may be connected to the exhaust hole 200, and an exhaust pump 230 may be connected to the exhaust tip 220. In addition, by using the exhaust pump 230, the impurity gas remaining in the discharge space between the front substrate 201 and the rear substrate 211 can be discharged to the outside, and argon (Ar), neon (Ne), xenon Discharge gas such as (Xe) can be injected into the discharge space.

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

Referring to FIG. 20, the size of the discharge cells disposed in the boundary areas BA of two panels ① and ② adjacent to each other in the horizontal direction, that is, the direction intersecting with the address electrode 213, is determined by the size of each panel ①. , May be larger than the size of the discharge cells arranged in the center area of ②).

In other words, when the multi-plasma display panel includes the adjacent first panel ① and the second panel ②, the size of the first discharge cell 240A in the first area of the first panel ① is The second discharge cell 230A 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.

In addition, the size of the first discharge cell 240B in the third region of the second panel ② is the size of the second discharge cell 230B in the fourth region closer to the first panel ① than the third region. Can be less than

Here, at least the outermost discharge cell of the first panel ① may be disposed in the second region, and at least the outermost discharge cell of the second panel ② may be disposed in the fourth region. In addition, at least one discharge cell adjacent to the outermost discharge cell as well as the outermost discharge cell of the first panel ① is disposed in the second region, and at least the outermost discharge of the second panel ② is disposed in the fourth region. In addition to the cell, at least one discharge cell adjacent to the outermost discharge cell may be further disposed.

The seam portion between two adjacent panels in the multi-plasma display panel may be a cause of deterioration of the image quality of the 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 area of the outermost discharge cell is reduced in the boundary area BA between the two panels.

On the other hand, when the size of the outer area of the outermost discharge cell in the boundary area BA between the two panels is reduced, the possibility of impurity gas remaining in the boundary part BA is further increased. In the discharge cells arranged, the discharge becomes unstable, which may greatly increase the possibility of a non-lighting phenomenon. In this case, the images implemented on the two panels may appear discontinuously, thereby degrading the image quality of the images implemented on the multi-plasma display panel.

On the other hand, as shown in FIG. 20, the sizes of the second discharge cells 230A and 230B disposed in the boundary area BA of two adjacent panels ① and ② are located in the center area of each panel 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 may be stabilized at the boundary portion BA, so that the image implemented on the two adjacent panels ① and ② may appear more natural. . Accordingly, the image quality of the multi-display panel can be improved.

Therefore, it may be desirable to apply the plasma display panel described in detail with reference to FIGS. 1 to 15 to the multi-plasma display panel. 1 to 15 have already been described in detail, so further description thereof will be omitted.

Referring to FIG. 21, the size of the second discharge cells 230A and 230B in the boundary area BA of the two panels ① and ② adjacent to each other in the vertical direction, that is, in the direction parallel to the address electrode 213 is the size of each panel. It may be larger than the size of the first discharge cells 240A, 240B in the central region of (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 boundary area of the two panels in the vertical direction and the horizontal direction is larger than the size of the first discharge cells 240A and 240B in the center area of each panel. It is possible.

For example, as illustrated in FIG. 22, the multi-plasma display panel is arranged to be adjacent to the first panel ① and the second panel ② and adjacent to the first panel ①. Suppose a case including a third panel ③, a second panel ②, and a fourth panel ④ disposed adjacent to the third panel ③.

In this case, the sizes of the first discharge cells 240 in the tenth region of the first panel ① may be closer to the second panel ② than the tenth region in the direction parallel to the first electrode. It may be smaller than the size of the second discharge cell 230 in the thirtieth region closer to the third panel ③ than the tenth region in the direction parallel to the electrode. Here, at least the outermost discharge cells may be disposed in the twentieth region and the thirtieth region.

In addition, the discharge cells disposed in the twentieth region may be larger in width in the direction parallel to the first electrode than the discharge cells disposed in the tenth region. This may correspond to, for example, increasing the size of the discharge cell in the 20th region by reducing the width of the second partition 212b in the 20th region as in the case of FIG. 7.

In addition, the discharge cells disposed in the thirtieth region may be larger in width in the direction parallel to the second electrode than the discharge cells disposed in the tenth region. This may correspond to, for example, increasing the size of the discharge cell in the thirtieth region by reducing the width of the first partition 212a in the thirtieth region as in the case of FIG. 11.

In addition, the discharge cells disposed in the thirtieth region may be larger in width in the direction parallel to the first electrode than the discharge cells disposed in the tenth region. This may correspond to, for example, increasing the size of the discharge cell in the thirtieth region by reducing the width of the second partition 212b in the thirtieth region as in the case of FIG. 12. The above configuration may also be applied to the second, third, and fourth panels ②, ③, and ④, respectively.

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.

Claims (12)

Front substrate;
A rear substrate disposed to face the front substrate; And
A partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate;
Including,
The size of the first discharge cell among the plurality of discharge cells disposed in the active area of the panel is smaller than the size of the second discharge cell disposed outside the first discharge cell. The method of claim 1,
And the second discharge cell is an outermost discharge cell. Front substrate;
A rear substrate disposed to face the front substrate; And
A partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate;
Including,
And the size of the discharge cells in the first area in the active area of the panel is smaller than the size of the discharge cells in the second area outside the first area in the active area. The method of claim 3, wherein
And at least an outermost discharge cell in the second area. A multi-plasma display panel comprising a plurality of plasma display panels disposed adjacent to each other,
Each of the plurality of plasma display panels
Front substrate;
A rear substrate disposed to face the front substrate; And
A partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate;
Including,
And the size of the discharge cells at the boundary portions of any two plasma display panels is larger than the size of the discharge cells at the other portions. First panel; And
A second panel disposed adjacent to the first panel;
Including,
The first panel and the second panel are each
Front substrate;
A rear substrate disposed to face the front substrate; And
A partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate;
Including,
The size of the discharge cell in the first region of the first panel is smaller than the size of the discharge cell in the second region closer to the second panel than the first region,
The size of the discharge cell in the third region of the second panel is smaller than the size of the discharge cell in the fourth region closer to the first panel than the third region. The method according to claim 6,
At least the outermost discharge cell of the first panel is disposed in the second region,
And at least an outermost discharge cell of the second panel in the fourth region. First panel;
A second panel disposed adjacent to the first panel;
A third panel disposed adjacent to the first panel; And
A fourth panel disposed adjacent to the second panel and the third panel;
Including,
The first panel, the second panel, the third panel and the fourth panel are each
A front substrate on which the first electrode is disposed;
A rear substrate disposed to face the front substrate and having a second electrode intersecting the first electrode; And
A partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate;
Including,
The size of the discharge cell in the tenth region of the first panel is the tenth region closer to the second panel than the tenth region in the direction parallel to the first electrode and the tenth region in the direction parallel to the second electrode. And a size smaller than the size of the discharge cells in the thirtieth region closer to the third panel than in the region. The method of claim 8,
And at least an outermost discharge cell in the twentieth region and the thirtieth region. The method of claim 8,
And the discharge cells arranged in the twentieth region are larger in width in a direction parallel to the first electrode than the discharge cells disposed in the tenth region. The method of claim 8,
And the discharge cells arranged in the thirtieth region are larger in width in a direction parallel to the second electrode than the discharge cells arranged in the tenth region. The method of claim 8,
And the discharge cells arranged in the thirtieth region have a larger width in a direction parallel to the first electrode than the discharge cells disposed in the tenth region.

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