KR20090090895A - Plasma display panel - Google Patents

Abstract

A plasma display panel is provided to improve the driving efficiency by preventing the excessive rising of the driving voltage. A scan electrode(102) and a sustain electrode(103) are formed in a front substrate(101). An address electrode(113) intersecting with the scan electrode and the sustain electrode is formed in a rear substrate(111). An upper dielectric layer(104) is arranged on the top of the scan electrode and the sustain electrode. The upper dielectric layer limits the discharge current of the sustain electrode and the scan electrode. The upper dielectric layer insulates the scan electrode and the sustain electrode. The protective layer is formed on the top of the upper dielectric layer. A lower dielectric layer(115) is formed on the top of the address electrode. A partition wall(112) is formed on the top of the lower dielectric layer.

Description

Plasma Display Panel

The present invention relates to a plasma display panel.

The plasma display panel includes a phosphor layer formed in a discharge cell divided by a partition, and 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.

An object of the present invention is to provide a plasma display panel which improves an electrode disposed on a front substrate to prevent excessively lowering the brightness of an image and to prevent an excessive increase in driving voltage.

The plasma display panel according to the present invention divides a discharge cell between a front substrate on which scan electrodes and a sustain electrode are parallel to each other, a rear substrate on which an address electrode intersecting the scan electrode and the sustain electrode is disposed, and a front substrate and a rear substrate. And a partition wall, wherein the scan electrode and the sustain electrode are one layer, and the scan electrode and the sustain electrode each include a plurality of line portions that intersect the address electrode, and the spacing between the two line portions is a long side of the discharge cell. It may be 0.14 times or more and 0.20 times or less of length.

In addition, the distance between the two line portions may be 0.15 times or more and 0.19 times or less of the length of the long side of the discharge cell.

In addition, the length of the short side of the discharge cell may be 100 μm or more and 200 μm or less.

The length of the short side of the discharge cell may be 150 µm or more and 195 µm or less.

In addition, the width of the line portion may be 0.039 times or more and 0.08 times or less of the length of the long side of the discharge cell.

In addition, the width of the line portion may be 0.045 times or more and 0.063 times or less of the length of the long side of the discharge cell.

In addition, the scan electrode and the sustain electrode may further include at least one protrusion that protrudes from the line portion and at least one connection portion that connects the at least two line portions.

The partition wall may include a first partition wall parallel to the line part and a second partition wall intersecting the line part, and the connection part may overlap the second partition wall.

In addition, another plasma display panel according to the present invention is discharged between a front substrate on which scan electrodes and a sustain electrode are arranged in parallel with each other, a rear substrate on which an address electrode intersecting the scan electrode and the sustain electrode is disposed, and a front substrate and a rear substrate. A partition wall dividing the cell, wherein the short side of the discharge cell is 100 µm or more and 200 µm or less, the scan electrode and the sustain electrode are one layer, and the scan electrode and the sustain electrode respectively cross the address electrode. A plurality of line portions and at least one protruding portion protruding from the line portion toward the center of the discharge cell and at least one connecting portion connecting at least two line portions, wherein a distance between the two line portions is equal to the length of the long side of the discharge cell. 0.14 times or more and 0.20 times or less, and a partition is the 1st partition parallel with a line part, and the 2nd partition which intersects a line part. It includes, and the shortest distance between the scan electrode and the sustain electrode and the at least one line portion of the first barrier rib may be smaller than the distance between the protruding portion of the projection and the sustain electrodes of the scan electrodes.

The shortest distance between the first partition wall and the line portion of the scan electrode and the sustain electrode may be 0.1 to 0.34 times the distance between the protrusion of the scan electrode and the protrusion of the sustain electrode.

The shortest gap between the first partition wall and the line portion of the scan electrode and the sustain electrode may be 0.22 times or more and 0.29 times or less the distance between the protrusion of the scan electrode and the protrusion of the sustain electrode.

The plasma display panel according to the present invention has the effect of preventing the brightness of the image from being excessively degraded to improve the image quality of the image and preventing the excessive increase of the driving voltage to improve the driving efficiency.

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

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

Referring to FIG. 1, the plasma display panel 100 includes a front substrate 101 formed with parallel scan electrodes 102 and Y and sustain electrodes 103 and Z, and scan electrodes 102 and Y and a sustain electrode 103. , Z may include a rear substrate 111 on which address electrodes 113 and X intersect each other.

The discharge currents of the scan electrodes 102 and Y and the sustain electrodes 103 and Z are limited on the scan electrodes 102 and Y and the sustain electrodes 103 and Z, and the scan electrodes 102 and Y and the sustain electrodes ( An upper dielectric layer 104 may be arranged to insulate between 103, Z).

A protective layer 105 may be formed on top of the upper dielectric layer 104 to facilitate discharge conditions. The protective layer 105 may include a material having a high secondary electron emission coefficient, such as magnesium oxide (MgO).

Address electrodes 113 and X may be formed on the rear substrate 111, and a lower dielectric layer 115 may be formed on the address electrodes 113 and X to insulate the address electrodes 113 and X.

On top of the lower dielectric layer 115 is formed a discharge space, that is, partitions 112 such as stripe type, well type, delta type, and honeycomb type for partitioning the discharge cells. Can be. Accordingly, a first discharge cell emitting red (R) light, a second discharge cell emitting blue (B) light, and green (Green) between the front substrate 101 and the rear substrate 111. : G) A third discharge cell or the like that emits light can be formed.

In addition, it is also possible to further form a fourth discharge cell emitting white (W) or yellow (Y) light in addition to the first, second and third discharge cells.

Meanwhile, the widths of the first, second, and third discharge cells may be substantially the same, but the width of at least one of the first, second, and third discharge cells may be different from that of the other discharge cells. .

For example, the width of the first discharge cell that emits red (R) light is the smallest, and the width of the third discharge cell that emits green (G) light and the width of the second discharge cell that emits blue (B) light is first. It can be made larger than the width of the discharge cell. Then, color temperature characteristics of the image to be implemented may be improved. The width of the second discharge cell may be substantially the same or different from the width of the third discharge cell.

In addition, the partition wall 112 may include a first partition wall 112a and a second partition wall 112b that cross each other, where the height of the first partition wall 112a and the height of the second partition wall 112b may be different from each other. have. Here, the first partition wall 112a may be parallel to the long side of the rear substrate 111, and the second partition wall 112b may be parallel to the short side of the rear substrate 111.

In addition, not only the structure of the partition wall 112 illustrated in FIG. 1, but also the structure of the partition wall having various shapes may be possible. In at least one of the channel-type partition structure, the first partition 112a or the second partition 112b in which a channel usable as an exhaust passage is formed in at least one of the first partition 112a or the second partition 112b. A grooved partition wall structure having a groove formed therein may be possible.

In addition, although each of the first, second, and third discharge cells is shown and described as being arranged on the same line, it may be arranged in other shapes. For example, a delta type arrangement in which the first, second and third discharge cells are arranged in a triangular shape may be possible. In addition, the shape of the discharge cell may also be a variety of polygonal shapes, such as pentagonal, hexagonal, as well as rectangular.

In addition, in FIG. 1, only the case where the partition wall 112 is formed on the rear substrate 111 is illustrated, but the partition wall 112 may be formed on at least one of the front substrate 101 and the rear substrate 111.

The discharge gas may be filled in the discharge cells partitioned by the partition wall 112.

In addition, a phosphor layer 114 that emits visible light for displaying an image during address discharge may be formed in the discharge cell partitioned by the partition wall 112. For example, a first phosphor layer that generates red light, a second phosphor layer that generates blue light, and a third phosphor layer that generates green light may be formed.

In addition to the first, second, and third phosphors, it is also possible to further form a fourth phosphor layer for generating white (W) and / or yellow (Y) light.

In addition, the thicknesses of the first, second, and third phosphor layers may be different from other phosphor layers. For example, the thickness of the second phosphor layer or the third phosphor layer may be thicker than the thickness of the first phosphor layer. Here, the thickness of the second phosphor layer may be substantially the same or different from the thickness of the third phosphor layer.

In addition, the above description shows only the case where the upper dielectric layer 104 and the lower dielectric layer 115 are each one layer, but at least one of the upper dielectric layer 104 and the lower dielectric layer 115 is shown. May be made of a plurality of layers.

In addition, in order to prevent reflection of external light due to the partition wall 112, a black layer (not shown) capable of absorbing external light may be further disposed on the partition wall 112.

In addition, another black layer (not shown) may be further formed at a specific position on the front substrate 101 corresponding to the partition wall 112.

In addition, although the width and thickness of the address electrode 113 formed on the rear substrate 111 may be substantially constant, the width or thickness inside the discharge cell may be different from the width or thickness outside the discharge cell. . For example, the width or thickness inside the discharge cell may be wider or thicker than that outside the discharge cell.

2 is a view for explaining a method of driving a plasma display panel.

Referring to FIG. 2, in the reset period RP for initializing at least one subfield among a plurality of subfields of a frame, the rising signal RS and the falling signal RS may be applied to the scan electrode Y. FS) can be supplied.

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

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

After the rising signal is supplied, when the falling signal is supplied to the scan electrode, a weak erase discharge, that is, a 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.

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

In addition, in the address period, a scan signal Scan falling from the scan bias signal 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 subfield located earlier. 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 Data 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 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.

3 is a diagram for explaining a scan electrode, a sustain electrode, and a black layer.

Referring to FIG. 3, the scan electrode 102 and the sustain electrode 103 may have a single layer structure. That is, the scan electrode 102 and the sustain electrode 103 are bus electrodes in which the transparent electrode is omitted.

In addition, black layers 120 and 130 may be disposed between the scan electrode 102 and the sustain electrode 103 and the front substrate 101, respectively.

The scan electrode 102 and the sustain electrode 103 may be made of a metallic material having excellent electrical conductivity and easy to be formed, such as negative (Ag), gold (Au), copper (Cu), aluminum (Al), and the like. have.

The black layers 120 and 130 may include a material having a relatively high degree of darkness, for example, a cobalt (Co) material and ruthenium (Ru).

As such, when the black layers 120 and 130 are disposed between the scan electrode 102 and the sustain electrode 103 and the front substrate 101, contrast characteristics of an image implemented by reducing panel reflectance may be improved. Can be.

4 is a view for explaining the structure of the scan electrode and the sustain electrode in more detail.

First, referring to FIG. 4, the scan electrode 102 and the sustain electrode 103 may include a plurality of line portions 521a, 521b, 531a, and 531b crossing the address electrode 113. In addition, the scan electrode 102 and the sustain electrode 103 may include at least one protrusion 522 or 532 protruding from the at least one line portion of the plurality of line portions 521a, 521b, 531a and 531b toward the center of the discharge cell. ) May be included.

In addition, the scan electrode 102 and the sustain electrode 103 may include connecting parts 523 and 533 connecting at least two line parts of the plurality of line parts 521a, 521b, 531a, and 531b.

When a driving signal is supplied to at least one of the scan electrode 102 and the sustain electrode 103, the discharge can be started between the protrusion 522 of the scan electrode 102 and the protrusion 532 of the sustain electrode 103. have.

The discharge discharged is diffused into the first line portion 521a of the scan electrode 102 and the first line portion 531a of the sustain electrode 103, and then rides through the connecting portions 523 and 533. It may be diffused into the second line portion 521b and the second line portion 531b of the sustain electrode 103.

In FIG. 4, only the case where the scan electrode 102 includes one protrusion 522 and the sustain electrode 103 also includes one protrusion 532 is not limited thereto. For example, the scan electrode 102 and the sustain electrode 103 may each include three protrusions, or the scan electrode 102 may include four protrusions, and the sustain electrode 103 may have three protrusions. It is also possible to include. However, it may be preferable that the scan electrode 102 and the sustain electrode 103 each include one protrusion 522 and 532 in order to suppress a decrease in the aperture ratio and improve the brightness of the image.

The line widths of the line portions 521a, 521b, 531a, and 531b may be substantially the same as W. FIG. Alternatively, the width of at least one line portion among the plurality of line portions 521a, 521b, 531a, and 531b may be different from the width of the other line portion.

In addition, at least two line portions may be spaced apart from each other at intervals of G. For example, the first line portion 521a and the second line portion 521b of the scan electrode 102 and the first line portion 531a and the second line portion 531b of the sustain electrode 103 are each G. FIG. Can be spaced apart. Here, an interval between the first line portion 521a and the second line portion 521b of the scan electrode 102 and between the first line portion 531a and the second line portion 531b of the sustain electrode 103 are described. The spacing may be substantially the same, or may be different from each other.

Also, at least one line portion 521a, 521b, or 531a of the first partition wall 112a parallel to the line portions 521a, 521b, 531a, and 531b of the partition wall 112 and the electrodes of the scan electrode 102 and the sustain 103. , 531b may be spaced apart from each other by B interval. For example, the second line portion 521b and the first partition wall 112a of the scan electrode 102 are spaced apart at intervals of B, and the second line portion 531b and the first partition wall of the sustain electrode 103 ( 112a) may also be spaced at intervals of B. FIG.

In addition, the length P of the short side of the discharge cell divided by the partition wall 112 may be about 100 μm or more and 200 μm or less. In addition, the length L of the long side of a discharge cell can be about 400 micrometers or more and 600 micrometers or less. As described above, when the length P of the short side of the discharge cell is about 100 µm or more and 200 µm, the pixel P may be arranged in a limited area so that a high resolution image, for example, a Full HD image is realized. It is possible. In addition, even when the area of the active area of the plasma display panel is relatively small, a sufficient number of discharge cells can be formed, which can be advantageous for miniaturization of the plasma display panel.

5 is a diagram for explaining the length of the short side of the discharge cell.

FIG. 5 illustrates the luminance of an image in which a length P of a short side of a discharge cell is in a range of 85 μm or more and 250 μm or less when trying to realize XGA (Extended Graphics Array) grade image quality in a 32 inch panel. The data obtained by observing the width of the partition wall is shown. That is, in FIG. 5, the discharge cell is used to implement XGA-class image quality in a 32-inch panel.

When observing the brightness of the image, many observers sensually evaluated the brightness of the image while displaying the image on a full-white screen in a dark room. In addition, when observing the width of a partition, the change of the width of the 2nd partition which intersects the line part of a scan electrode and a sustain electrode among partitions was observed.

Here, the symbol ◎ indicates that the image is sufficiently high or that the width of the partition is sufficiently wide, which is very good, the symbol 표시 indicates that it is relatively good, and the X symbol indicates that it is poor.

Referring to FIG. 5, it can be seen that when the length P of the short side of the discharge cell is greater than or equal to 85 μm and less than or equal to 90 μm, it is very poor in terms of luminance of an image to be implemented. In this case, the size of the discharge cell may be excessively small in terms of the brightness of the image, which may result in an excessive increase in the proportion of the portion of the discharge cell covered by the electrode and an excessively short discharge path. Can be excessively low. In addition, considering the side of the manufacturing process, it may be very difficult to form the length (P) of the short side of the discharge cell to more than 85㎛ 90㎛. In addition, since the size of the discharge cell is excessively small, it may be very difficult to form the phosphor layer in the discharge cell.

Further, when the length P of the short side of the discharge cell is 100 µm or more and 120 µm or less, it can be seen that it is relatively good in terms of brightness of the image.

On the other hand, when the length P of the short side of the discharge cell is 150 μm or more, it can be seen that it is very good in terms of luminance of the image. In this case, since the size of the discharge cell is sufficiently large in terms of the brightness of the image, the thickness and width of the phosphor layer formed in the discharge cell may be sufficiently thick or wide, and the length of the discharge path may also be sufficiently secured so that the brightness of the image may be sufficiently high. Can be.

Next, it can be seen that when the length P of the short side of the discharge cell is 230 µm or more and 250 µm or less in terms of the width of the partition wall, it is very poor. In this case, since the size of the discharge cell is excessively large in terms of the width of the partition wall, the width of the partition wall must be made excessively thin in order to form a sufficient number of discharge cells in a predetermined area. Then, the height of a partition cannot be made high enough in a manufacturing process, and even a problem may arise in the strength of a partition, such as a collapse of a partition.

On the other hand, when the length P of the short side of the discharge cell is 200 μm, it can be seen that it is relatively good in terms of the width of the partition wall.

In addition, when the length P of the short side of a discharge cell is 85 micrometers or more and 195 micrometers or less, it turns out that it is very favorable in terms of the width | variety of a partition. In this case, since the size of the discharge cell may be sufficiently small in terms of the width of the partition wall, the thickness of the partition wall may be sufficiently thick. Thereby, the height of a partition can be made high enough and the intensity | strength of a partition can fully be improved.

Considering the data of FIG. 5, the length of the short side of the discharge cell may be preferably 100 μm or more and 200 μm or less, and more preferably, the length of the short side of the discharge cell may be 150 μm or more and 195 in order to miniaturize the plasma display panel. May be less than or equal to μm.

On the other hand, while the above only describes the 32-inch plasma display panel, in the case of other inches, for example, 50-inch plasma display panel, since the effective area is larger than the 32-inch case to discharge to achieve the XGA-class image quality The length of the short side of the cell does not need to be 100 µm or more and 200 µm or less.

However, in order to realize Full-HD quality in a 50-inch plasma display panel, as shown in FIG. 5, the short side of the discharge cell may be preferably 100 μm or more and 200 μm or less, and more preferably, the short side of the discharge cell. The length of may be more than 150㎛ 195㎛.

6 is a view for explaining the relationship between the size of the discharge cell and the brightness of the image.

Referring to FIG. 6, (a) shows an example in which the length P of the short side of the discharge cell is relatively small as in the present invention, and (b) shows the length P1 of the short side of the discharge cell relatively. An example of a large case is shown. For example, if the discharge cell of the case (a) corresponds to the XGA-class resolution in the 32-inch panel, the discharge cell of the case (b) may be a discharge cell corresponding to the VGA-class resolution.

Comparing the cases of (a) and (b), in the case of (b), since the size of the discharge cell is relatively large, the path of discharge generated between the scan electrode 102 and the sustain electrode 103 is generated. May be relatively long, so that the luminance of the image may not be drastically reduced even if the center portion of the discharge cell is covered to some extent. For example, the gap G1 between the first line portions 521a and 531a and the second line portions 521b and 531b of the scan electrode 102 and the sustain electrode 103 is sufficiently wide such that the scan electrode 102 and Even if the first line portions 521a and 521b of the sustain electrode 103 are disposed to some extent in the center direction of the discharge cell, the luminance of the image may not be sharply reduced.

Therefore, the gap G1 between the first line portions 521a and 531a and the second line portions 521b and 531b of the scan electrode 102 and the sustain electrode 103 is sufficiently widened to thereby widen the scan electrode 102 and the sustain electrode ( Even if the distance A1 between 103 is relatively small, the luminance of the image may not decrease rapidly.

On the other hand, in the case of (a), a discharge cell generated between the scan electrode 102 and the sustain electrode 103 may be excessively short as a relatively small case of the discharge cell, and a phosphor layer formed in the discharge cell. The area of can also be relatively small. Accordingly, the amount of light generated by the driving signal of the same voltage may also be relatively small. Therefore, in the case of (a), the gap G between the first line portions 521a and 531a and the second line portions 521b and 531b of the scan electrode 102 and the sustain electrode 103 is sufficiently small to scan the electrode. It may be desirable to relatively widen the spacing A between 102 and the sustain electrode 103. That is, by widening the distance A between the scan electrode 102 and the sustain electrode 103 relatively wide, the brightness is lowered by suppressing the discharge cell central part being covered by the scan electrode 102 or the sustain electrode 103 as much as possible. Minimize

The central portion of the discharge cell is the portion where the electric field is the strongest between the scan electrode 102 and the sustain electrode 103, and the portion with the highest amount of visible light is also generated. Therefore, if the center portion of the discharge cell is suppressed by the scan electrode 102 or the sustain electrode 103 as much as possible, the decrease in luminance of the image can be minimized.

Therefore, when the size of the discharge cell is relatively small as shown in (a), the distance between the two line portions in the scan electrode 102 and the sustain electrode 103, that is, the first line portions 521a and 531a and the second line By making the interval between the portions 521b and 531b relatively small, the interval between the scan electrode 102 and the sustain electrode 103, that is, between the protrusion 522 of the scan electrode 102 and the protrusion 532 of the sustain electrode 103. It may be advantageous to widen the interval A sufficiently to prevent the luminance deterioration of the image.

In addition, the shortest distance B between the line portion of the scan electrode 102 and the sustain electrode 103 and the first partition wall 112a may be defined by the protrusion 522 and the sustain electrode 103 of the scan electrode 102. It may be desirable to sufficiently reduce the central portion of the discharge cell by making it smaller than the gap A between the protrusions 532.

In addition, in the case of (b), since the size of the discharge cell is relatively large, the tail portion protruding to the rear of the discharge cell so that the discharge initiated between the scan electrode 102 and the sustain electrode 103 can be spread widely behind the discharge cell. (522c, 532c), but in the case of (a), if the scan electrode 102 and the sustain electrode 103 include a tail, they are covered by the scan electrode 102 and the sustain electrode 103 in the discharge cell. Excessively increasing or decreasing the area of the losing portion may result in excessively reduced luminance, which would be disadvantageous in terms of luminance.

7 to 9 are diagrams for explaining the relationship between the distance between two line portions and the length of the long side of the discharge cell.

First, in FIG. 7, the ratio G between two line portions, that is, the distance between two line portions of the scan electrode and the two lie portions of the sustain electrode and the length L of the long side of the discharge cell is 0.11. When having a value between 0.22, data of measuring the luminance of the image to be implemented and measuring the driving voltage between the scan electrode and the sustain electrode is shown.

Here, the shortest distance B between the line portion of the scan electrode and the sustain electrode and the first partition wall of the partition wall is kept constant.

◎ Display is very good because the brightness of the image is high enough or the driving voltage is low enough. ○ Display is relatively good, and X is poor because the brightness of the image is too low or the driving voltage is too high. Indicates.

Also, the spacing between two line portions of the scan electrode and the spacing between two line portions of the sustain electrode are substantially the same.

Referring to FIG. 7, when the distance G between two line parts is 0.22 times the length L of the long side of the discharge cell, it may be very poor.

In this case, the distance G between the two line portions, that is, in terms of luminance, that is, the first line portions 521a and 531a and the second line portion 521b of the scan electrode 102 and the sustain electrode 103 are shown. , 531b may be excessively larger than the length L of the long side of the discharge cell, so that the first line portions 521a and 531a of the scan electrode 102 and the sustain electrode 103 are discharge cells. It may be placed excessively in the middle of the. Then, the center portion of the discharge cell having a relatively high amount of visible light generation is excessively covered by the first line portions 521 and 531a of the scan electrode 102 and the sustain electrode 103 so that the luminance of the image realized is excessive. It can be lowered.

On the other hand, it can be seen that the interval G between the two line parts in terms of luminance of the image is relatively good when the distance G of the long side L of the discharge cell is 0.20 times.

In addition, it can be seen that the interval G between two line portions in terms of luminance of the image is very good when the distance G is 0.11 times or more and 0.19 times or less the length L of the long side of the discharge cell.

In this case, the distance G between the first line portion and the second line portion of the scan electrode and the sustain electrode may be sufficiently small in terms of luminance, and thus the distance A between the scan electrode and the sustain electrode is sufficiently widened, thereby relatively relatively. It is possible to sufficiently suppress that the center portion of the discharge cell with a large amount of visible light generation is covered by the first line portion of the scan electrode and the sustain electrode. Accordingly, the luminance of the image may be sufficiently high.

Next, it can be seen that the gap G between the two line portions in the side of the driving voltage between the scan electrode and the sustain electrode is very poor when it is 0.11 times or more and 0.12 times or less of the length L of the long side of the discharge cell.

In this case, the distance G between the first line portions 521a and 531a and the second line portions 521b and 531b of the scan electrode 102 and the sustain electrode 103 in the driving voltage side as in the case of FIG. 9. This can be excessively shortened, and thus the spacing A between the scan electrode 102 and the sustain electrode 103 can be excessively large. As a result, an excessively high discharge voltage between the scan electrode 102 and the sustain electrode 103 may lower driving efficiency.

On the other hand, it can be seen that the spacing G between two line portions is relatively good when the length G of the long side L of the discharge cell is 0.14 times.

In addition, it can be seen that the spacing G between two line portions is very good when it is 0.15 times or more and 0.22 times or less the length L of the long side of the discharge cell.

In this case, the distance G between the first line portion and the second line portion of the scan electrode and the sustain electrode may be sufficiently large in terms of the driving voltage, and accordingly, the gap A between the scan electrode and the sustain electrode is sufficiently small to scan. The driving voltage between the electrode and the sustain electrode can be sufficiently low. Accordingly, the driving efficiency can be sufficiently high.

7 to 9, the distance G between the two line portions may be 14% or more and 20% or less, and more preferably 15% of the length L of the long side of the discharge cell. Or more than 19%.

10 to 12 are diagrams for explaining the relationship between the shortest gap between the first partition wall and the line portion and the gap between the scan electrode and the sustain electrode.

First, in FIG. 10, the ratio of the shortest distance B between the first partition wall and the line portion of the partition walls and the distance A between the scan electrode and the sustain electrode, that is, the first partition wall of the second line portion and the partition walls of the scan electrode and the sustain electrode, is shown. When the ratio of the interval B between the protrusions of the scan electrodes and the protrusions of the scan electrodes and the protrusions of the sustain electrodes has a value between 0.05 and 0.4, the luminance of the image to be realized is measured, and the driving between the scan electrodes and the sustain electrodes is performed. Data measuring voltage is shown.

Here, the distance G between the first line portion and the second line portion of the scan electrode and the sustain electrode is kept constant.

◎ Display is very good because the brightness of the image is high enough or the driving voltage is low enough. ○ Display is relatively good, and X is poor because the brightness of the image is too low or the driving voltage is too high. Indicates.

Also, the distance between the second line portion and the first partition of the scan electrode and the distance between the second line portion and the first partition of the sustain electrode are substantially the same.

Referring to FIG. 10, the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.4 times the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode in terms of luminance of the image. It can be seen that poor.

In this case, as shown in FIG. 11, the shortest distance B between the first partition wall 112a and the line portion of the scan electrode 102 and the sustain electrode 103, that is, the first partition wall of the partition wall 112 ( The shortest distance B between the second line portion 521b of the scan electrode 102 and the second line portion 531b of the sustain electrode 103 is the distance between the scan electrode 102 and the sustain electrode 103. (A), i.e., excessively larger than the distance A between the protrusion 522 of the scan electrode 102 and the protrusion 532 of the sustain electrode 103, and thus the scan electrode 102 and the sustain electrode ( The first line portions 521a and 531a of the 103 may be excessively disposed in the center portion of the discharge cell. Then, the center portion of the discharge cell having a relatively high amount of visible light generation is excessively covered by the first line portions 521 and 531a of the scan electrode 102 and the sustain electrode 103 so that the luminance of the image realized is excessive. It can be lowered.

On the other hand, the shortest distance (B) between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.31 times or more and 0.34 times or less of the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode in terms of the luminance of the image. It can be seen that relatively good.

In the case where the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.05 to 0.29 times the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode in terms of the luminance of the image, It can be seen that it is very good.

In this case, the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode in terms of luminance may be sufficiently smaller than the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode, and thus the scan. By sufficiently widening the gap A between the electrode and the sustain electrode, it is possible to sufficiently suppress that the center portion of the discharge cell having a relatively large amount of visible light generation is covered by the first line portion of the scan electrode and the sustain electrode. Accordingly, the luminance of the image may be sufficiently high.

Next, the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.05 of the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode in terms of the driving voltage between the scan electrode and the sustain electrode. In the case of the ship can be seen that very poor.

In this case, in the driving voltage side, as in the case of FIG. 12, the shortest distance B between the first portion 112a and the line portion of the scan electrode 102 and the sustain electrode 103, that is, among the partition walls 112. The shortest distance B between the first partition wall 112a and the second line portion 521b of the scan electrode 102 and the second line portion 531b of the sustain electrode 103 may be excessively small, thereby An interval A between the scan electrode 102 and the sustain electrode 103 may be excessively large. As a result, an excessively high discharge voltage between the scan electrode 102 and the sustain electrode 103 may lower driving efficiency.

On the other hand, it is relatively good when the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.1 to 0.16 times the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode. It can be seen.

It is also found that the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode is very good when the distance A between the protrusion of the scan electrode and the protrusion of the sustain electrode is 0.22 times or more and 0.4 times or less. Can be.

In this case, the shortest distance B between the first partition wall 112a and the line portion of the scan electrode 102 and the sustain electrode 103, that is, the first partition wall 112a and the scan of the partition wall 112, is scanned in terms of the driving voltage. The shortest gap B between the second line portion 521b of the electrode 102 and the second line portion 531b of the sustain electrode 103 may be sufficiently large, and thus, the gap A between the scan electrode and the sustain electrode. By sufficiently small, the driving voltage between the scan electrode and the sustain electrode can be sufficiently low. Accordingly, the driving efficiency can be sufficiently high.

10 to 12, the shortest distance B between the first partition wall and the line portion of the scan electrode and the sustain electrode is 10% or more between the protrusion A of the scan electrode and the protrusion of the sustain electrode. It may be desirable to be less than or equal to%, and more preferably less than or equal to 22% and less than or equal to 29%.

13-15 is a figure for demonstrating the line width of a line part.

13 shows a ratio between the line width W of the line portions 521a, 521b, 531a, and 531b of the scan electrode 102 and the sustain electrode 103 and the length L of the long side of the discharge cell of 0.02 to 0.11. The data of measuring the luminance of the image to be implemented and measuring the driving voltage between the scan electrode 102 and the sustain electrode 103 is shown.

◎ Display is very good because the brightness of the image is high enough or the driving voltage is low enough. ○ Display is relatively good, and X is poor because the brightness of the image is too low or the driving voltage is too high. Indicates.

Referring to FIG. 13, when the line widths W of the line portions 521a, 521b, 531a, and 531b are 0.098 times or more and 0.11 times or less the length L of the long side of the discharge cell, they are very poor in terms of luminance of the image. Can be.

In this case, as in the case of FIG. 14, the line width W of the line portions 521a, 521b, 531a, and 531b may be excessively larger than the length L of the long side of the discharge cell. As the area of the portion covered by the parts 521a, 521b, 531a, and 531b increases, the luminance of the image to be realized may be excessively lowered.

On the other hand, the line width W of the line portions 521a, 521b, 531a, and 531b in terms of luminance of the image is relatively good when it is 0.072 times or more and 0.08 times or less the length L of the long side of the discharge cell. have.

In addition, it can be seen that the line widths W of the line portions 521a, 521b, 531a, and 531b are 0.02 times or more and 0.063 times or less than the length L of the long side of the discharge cell in terms of luminance of the image. In this case, the line width W of the line portions 521a, 521b, 531a, and 531b may be sufficiently small, thereby reducing the area of the portion covered by the line portions 521a, 521b, 531a, and 531b in the discharge cell. As a result, the luminance of the image may be sufficiently high.

Next, the line width W of the line portions 521a, 521b, 531a, and 531b is not less than 0.02 times the length L of the long side of the discharge cell in terms of the driving voltage between the scan electrode 102 and the sustain electrode 103. When it is 0.028 times or less, it turns out that it is very bad.

In this case, as in the case of FIG. 15, the line width W of the line portions 521a, 521b, 531a, and 531b may be excessively smaller than the length L of the long side of the discharge cell, and thus the scan electrode 102. ) And the electrical resistance of the sustain electrode 103 increases, driving voltage between the scan electrode 102 and the sustain electrode 103 may increase, and driving efficiency may decrease.

On the other hand, it can be seen that the line width W of the line portions 521a, 521b, 531a, and 531b is relatively good when it is 0.039 times or more and 0.042 times or less the length L of the long side of the discharge cell.

Further, it can be seen that the line widths W of the line portions 521a, 521b, 531a, and 531b are very good when they are 0.045 times or more and 0.11 times or less the length L of the long side of the discharge cell. In this case, the line widths W of the line portions 521a, 521b, 531a, and 531b may be sufficiently large, and accordingly, the electrical resistance of the scan electrode 102 and the sustain electrode 103 is sufficiently lowered, so that the scan electrode 102 And the driving voltage between the sustain electrode 103 can be lowered, and the driving efficiency can be improved.

13 to 15, the line width W of the line portions 521a, 521b, 531a, and 531b may be preferably not less than 0.039 times and not more than 0.08 times the length L of the long side of the discharge cell. More preferably, it may be 0.045 times or more and 0.063 times or less.

16 to 17 are diagrams for explaining another structure of the scan electrode and the sustain electrode.

First, referring to FIG. 16, the connecting portions 523 and 533 of the scan electrode 102 and the sustain electrode 103 intersect the scan electrode 102 and the sustain electrode 103 among the partition walls 112. Can be overlapped with

As such, when the connecting portions 523 and 533 overlap the second partition wall 112b, the area of the portion of the discharge cell covered by the scan electrode 102 and the sustain electrode 103 can be reduced, thereby improving the brightness of the image. You can. In addition, as in the present invention, when the length of the short side of the discharge cell is relatively small, for example, 100 μm or more and 200 μm or less may be more advantageous.

In addition, when the length of the short side of the discharge cell is relatively small, in order to improve the brightness of the image, the interval T2 between the two connecting portions 523 and 533 in one discharge cell is the interval between the second partition walls 112b. It may be desirable to be larger than (T1). In addition, it may be preferable that the width T4 of the connecting portions 523 and 533 is smaller than or equal to the upper width T3 of the second partition wall 112b.

Next, referring to FIG. 17, the connecting parts 523 and 533 may overlap each other without being overlapped with the second partition 112b without being 100% overlapped. In this case, it may be possible that the width T4 of the connecting portions 523 and 533 is larger than the upper width T3 of the second partition 112b. As such, even when the connecting portions 523 and 533 overlap with the second partition 112b, the luminance of the image may be sufficiently improved.

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

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

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

2 is a view for explaining a method of driving a plasma display panel.

3 is a diagram for explaining a scan electrode, a sustain electrode, and a black layer.

4 is a view for explaining the structure of the scan electrode and the sustain electrode in more detail.

5 is a diagram for explaining the length of a short side of a discharge cell.

6 is a diagram for explaining the relationship between the size of a discharge cell and the brightness of an image;

7 to 9 are diagrams for explaining the relationship between the distance between two line portions and the length of the long side of the discharge cell.

10 to 12 are diagrams for explaining the relationship between the shortest gap between the first partition wall and the line portion and the gap between the scan electrode and the sustain electrode;

13-15 is a figure for demonstrating the line width of a line part.

16 to 17 are views for explaining another structure of the scan electrode and the sustain electrode.

<Description of the numbers for the main parts of the drawings>

101: front substrate 102: scan electrode

103: sustain electrode 104: upper dielectric layer

105: protective layer 111: back substrate

112: partition 113: address electrode

114 phosphor layer 115 lower dielectric layer

Claims (11)

A front substrate on which scan electrodes and sustain electrodes parallel to each other are disposed; A rear substrate on which an address electrode intersects the scan electrode and the sustain electrode; And Barrier ribs defining a discharge cell between the front substrate and the rear substrate; Including, The scan electrode and the sustain electrode is a single layer (One Layer), The scan electrode and the sustain electrode are respectively A plurality of line portions intersecting the address electrode, And a spacing between two line portions is 0.14 times or more and 0.20 times or less the length of the long side of the discharge cell. The method of claim 1, And a spacing between two line portions is 0.15 times or more and 0.19 times or less the length of the long side of the discharge cell. The method of claim 1, And a short side of the discharge cell has a length of 100 µm or more and 200 µm or less. The method of claim 1, And a short side length of the discharge cell is 150 µm or more and 195 µm or less. The method of claim 1, And the width of the line portion is 0.039 times or more and 0.08 times or less of the length of the long side of the discharge cell. The method of claim 1, And the width of the line portion is 0.045 times or more and 0.063 times or less of the length of the long side of the discharge cell. The method of claim 1, The scan electrode and the sustain electrode are respectively At least one protrusion protruding from the line portion; And at least one connection part connecting at least two of the line parts. The method of claim 7, wherein The partition wall includes a first partition wall parallel to the line portion, and a second partition wall intersecting the line portion, And the connection portion overlaps the second partition wall. A front substrate on which scan electrodes and sustain electrodes parallel to each other are disposed; A rear substrate on which an address electrode intersects the scan electrode and the sustain electrode; And Barrier ribs defining a discharge cell between the front substrate and the rear substrate; Including, The length of the short side of the discharge cell is 100㎛ 200㎛, The scan electrode and the sustain electrode is a single layer (One Layer), The scan electrode and the sustain electrode are respectively A plurality of line portions intersecting the address electrodes; At least one protrusion protruding from the line portion toward a center of the discharge cell; And At least one connecting portion connecting at least two of the line portions; Including, The interval between the two line portions is 0.14 times or more and 0.20 times or less of the length of the long side of the discharge cell, The partition wall includes a first partition wall parallel to the line portion, and a second partition wall intersecting the line portion, And a shortest gap between the line portion of the at least one of the scan electrode and the sustain electrode and the first partition wall is smaller than a gap between the protrusion of the scan electrode and the protrusion of the sustain electrode. The method of claim 9, The shortest distance between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.1 to 0.34 times the distance between the protrusion of the scan electrode and the protrusion of the sustain electrode. The method of claim 9, The shortest distance between the first partition wall and the line portion of the scan electrode and the sustain electrode is 0.22 times or more and 0.29 times or less the distance between the protrusion of the scan electrode and the protrusion of the sustain electrode.

Images