KR20090076375A - Plasma display panel and method for manufacturing of the same - Google Patents

Abstract

A plasma display panel and a manufacturing method thereof are provided to improve a contrast property of an image by reducing panel reflectivity. A scan electrode(102) and a sustain electrode(103) are arranged on a front substrate. An address electrode which intersects with the scan electrode and the sustain electrode is arranged on a rear substrate. A barrier rib(112) partitions a discharge cell between the front substrate and the rear substrate. The barrier rib includes a first barrier rib(112a) and a second barrier rib(112b). A black layer is arranged between the scan electrode, the sustain electrode, and the front substrate.

Description

Plasma Display Panel and Method for Manufacturing of the same

The present invention relates to a plasma display panel and a method of manufacturing the same.

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.

One aspect of the present invention relates to a plasma display panel and a method for manufacturing the same, which improve a structure of an electrode disposed on a front substrate to reduce panel reflectance and prevent occurrence of a short circuit phenomenon of the electrode.

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. A barrier rib, wherein the scan electrode and the sustain electrode are one layer, the barrier rib including a first barrier wall parallel to the scan electrode and the sustain electrode, and a second barrier wall intersecting the scan electrode and the sustain electrode; The dummy electrode of a single layer structure is further disposed at a position corresponding to the first partition wall, and the shortest distance between at least one of the scan electrode or the sustain electrode and the dummy electrode may be 0.039 times or more and 0.2 times or less of the length of the long side of the discharge cell. .

In addition, the shortest interval between at least one of the scan electrode or the sustain electrode and the dummy electrode may be 0.039 times or more and 0.12 times or less of the length of the long side of the discharge cell.

In addition, the dummy electrode may be floating or grounded.

In addition, a black layer may be disposed between the scan electrode, the sustain electrode, and the front substrate.

In addition, the scan electrode, the sustain electrode and the black layer can be exposed together.

In addition, at least one of the scan electrode and the sustain electrode may include a line part and a protrusion part protruding from the line part toward the center of the discharge cell.

In addition, at least one of the scan electrode and the sustain electrode may further include a tail protruding from the line part in the discharge cell outer direction.

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 partitioning the cell, wherein the scan electrode and the sustain electrode are one layer, the partition wall including a first partition wall parallel to the scan electrode and the sustain electrode, and a second partition wall intersecting the scan electrode and the sustain electrode. The front substrate further includes a dummy electrode having a single layer structure at a position corresponding to the first partition wall, wherein the scan electrode and the sustain electrode include a line portion and a tail portion protruding from the line portion in a discharge cell outward direction. The shortest gap between the negative electrode and the dummy electrode may be 0.039 times or more and 0.2 times or less of the length of the long side of the discharge cell.

In addition, a black layer may be disposed between the scan electrode, the sustain electrode, and the front substrate, respectively, and the scan electrode, the sustain electrode, and the black layer may be exposed together.

In addition, the manufacturing method of the plasma display panel according to the present invention comprises the steps of applying a black material to the front substrate, a process of applying the electrode material on the black material, the black electrode and the electrode material together to expose the scan electrode and parallel to each other; Forming a sustain electrode and a dummy electrode, and forming a partition wall partitioning a discharge cell on a rear substrate facing the front substrate, wherein the partition wall includes a first partition wall parallel to the scan electrode and the sustain electrode, and the scan electrode and the sustain electrode; And a second partition wall intersecting the electrode, wherein the scan electrode, the sustain electrode, and the dummy electrode are one layer, the dummy electrode is disposed at a position corresponding to the first partition wall, and at least one of the scan electrode and the sustain electrode. The shortest interval between the dummy electrode and the dummy electrode may be 0.039 times or more and 0.2 times or less of the length of the long side of the discharge cell.

The plasma display panel and the method of manufacturing the same according to the present invention have the effect of improving the contrast characteristics of an image implemented by reducing the panel reflectance and improving the panel reliability by preventing the occurrence of a short circuit phenomenon of the electrode.

Hereinafter, a plasma display panel and a method of manufacturing the same 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 for emitting visible light for image display may be formed in a 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 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 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 to 5 are views 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 include a plurality of line portions 521a, 521b, 531a, and 531b intersecting the address electrode 113, and a plurality of line portions 521a, 521b, At least one protrusion 522a, 522b, 532a, and 532b protruding from the at least one line portion of the plurality of lines 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. For example, the first connection portion 523 connecting 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 of the sustain electrode 103. It may further include a second connecting portion 533 for connecting the portion (531b).

When a driving signal is supplied to at least one of the scan electrode 102 and the sustain electrode 103, a discharge is generated between the protrusions 522a and 522b of the scan electrode 102 and the protrusions 532a and 532b of the sustain electrode 103. This may be disclosed.

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, the scan electrode 102 includes two protrusions 522a and 522b, and the sustain electrode 103 also includes two protrusions 532a and 532b, but the number of protrusions is limited thereto. It doesn't work. 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.

The plurality of line portions 521a, 521b, 531a, and 531b have a predetermined width. For example, the first line portion 521a of the scan electrode 102 has a width of W1 and the second line portion 521b. ) Has a width of W2, the first line portion 531a of the sustain electrode 103 has a width of W3, and the second line portion 531b has a width of W4. Here, W1, W2, W3, W4 may have substantially the same value, and one or more may have a different value. For example, the widths W1 and W3 of the first line portion 521a of the scan electrode 102 and the first line portion 531a of the sustain electrode 103 are approximately 35 μm, and the second line portion 521b is provided. 531b has a width W2 and W4 of 45 μm, and the widths W1 and W3 of the first line portion 521a of the scan electrode 102 and the first line portion 531a of the sustain electrode 103 are equal to each other. It may be smaller than the widths W2 and W4 of the two line portions 521b and 531b.

Meanwhile, the gap g3 between 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 described. If the interval g4 is excessively large, the discharge initiated between the scan electrode 102 and the sustain electrode 103 is caused by the second line portion 521b of the scan electrode 102 and the second line of the sustain electrode 103. It is difficult to diffuse smoothly to the portion 531b, whereas on the other hand, it is difficult to diffuse the discharge to the rear of the partitioned cell 112 partitioning the partition 112. Therefore, the gap g3 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. It may be preferable that the interval g4 is about 170 μm or more and 210 μm or less.

The protrusions 522a, 522b, 532a, and 532b may be spaced apart from each other by a predetermined distance. For example, the first protrusion 522a and the second protrusion 522b of the scan electrode 102 are spaced apart from each other by g1, and the third protrusion 532a and the fourth protrusion 532b of the sustain electrode 103 are spaced apart from each other. ) May be spaced apart at g2 intervals. Here, at least one of g1 and g2 may be preferably 75 μm or more and 110 μm or less in order to ensure sufficient discharge efficiency.

Meanwhile, referring to FIG. 5, the scan electrode 102 and the sustain electrode 103 may include tail parts 522c and 532c protruding to the rear of the discharge cell from at least one line part.

As such, when the scan electrode 102 and the sustain electrode 103 include the tail portion, the discharge discharged through the tail portions 522c and 532c can be spread more widely behind the discharge cell.

In addition, the lengths of the protrusions 522a. 522b, 532a, and 532b may be different from the lengths of the tails 552c and 532c. For example, the length of the protrusions 522a. 522b, 532a, 532b may be longer than the length of the tails 552c, 532c. As a result, the discharge start voltage between the scan electrode 102 and the sustain electrode 103 can be lowered. In contrast, when the lengths of the tails 552c and 532c are longer than the lengths of the protrusions 522a. , 532b) can be more effectively diffused behind the discharge cell.

6 to 7 are diagrams for explaining the dummy electrode.

First, referring to FIG. 6, a dummy electrode 600 having a single layer structure may be disposed on a front substrate (not shown) at a position corresponding to the scan electrode 102 and the sustain electrode 103 and the first partition wall 112a. Can be.

In addition, the dummy electrode 600 may be disposed on the same layer as the scan electrode 102 and the sustain electrode 103.

In addition, the dummy electrode 600 may be floated or grounded. When the dummy electrode 600 is grounded, generation of crosstalk can be suppressed by suppressing the movement of charges between adjacent discharge cells.

Another black layer may be disposed between the dummy electrode 600 and the front substrate. As such, when another black layer is disposed between the dummy electrode 600 and the front substrate, the contrast characteristic of the image implemented by reducing the panel reflectance may be improved.

Next, as shown in FIG. 7, when the sustain electrode 103 includes the tail portion 532c, the shortest distance d between the dummy electrode 600 and the sustain electrode 103 is the dummy electrode 600 and the sustain electrode 103. Is the interval between the tail portions 532c. 7 illustrates only a relationship between the sustain electrode 103 and the dummy electrode 600, the scan electrode 102 and the dummy electrode 600 may be the same.

8 to 10 are diagrams for explaining the shortest gap between the scan electrode, the sustain electrode, and the dummy electrode.

8 shows a ratio d / L between the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 and the length L of the long side of the discharge cell. When the value is in between, the luminance of the image to be implemented is measured, and data observing whether at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 are shorted is shown. It is.

When observing the occurrence of a short circuit, it was determined that a short circuit occurred when a short circuit occurred in at least one panel among a plurality of panels used in the experiment. In addition, when measuring the luminance of the image, a panel in which at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 does not occur is short of the plurality of panels used in the experiment.

In terms of the brightness of the image, the mark ◎ indicates that the image is high enough to be very good, the mark □ indicates that it is relatively good, and the △ mark indicates that the image is excessively low and poor, and in terms of occurrence of short circuits. A mark indicates that at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 are short-circuited, and the X mark indicates that a short circuit does not occur.

Referring to FIG. 8, the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 is 0.25 times greater than the length L of the long side of the discharge cell in terms of luminance of the image. In the case of 0.30 times or less, it turns out that it is very bad.

In this case, as shown in FIG. 9, the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 is excessively larger than the length L of the long side of the discharge cell. As a result, the scan electrode 102 and the sustain electrode 103 may be disposed in a center of the discharge cell. Then, since the central portion of the discharge cell with a relatively high amount of visible light generation is excessively covered by the scan electrode 102 and the sustain electrode 103, the luminance of the image may be excessively lowered.

On the other hand, when the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 is 0.17 times or more than 0.20 times the length L of the long side of the discharge cell, It can be seen that it is relatively good in terms of luminance.

In addition, when the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 is 0.01 to 0.12 times the length L of the long side of the discharge cell, the brightness of the image It can be seen that the aspect is very good. In this case, the scan electrode 102 and the sustain electrode 103 may be disposed in the rear direction of the discharge cell so that the center portion of the discharge cell is not obstructed, and thus the brightness of the image may be sufficiently high.

When the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 is 0.01 to 0.02 times the length L of the long side of the discharge cell in terms of occurrence of a short circuit, An electrical short may occur between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600.

In this case, as shown in FIG. 10, the distance d2 between the tail portion 532c of the sustain electrode 103 and the dummy electrode 600 becomes excessively small, so that the tail portion 532c and the dummy of the sustain electrode 103 are piled up. Even when the electrode 600 is not in contact, the sustain electrode 103 and the dummy electrode 600 may be electrically shorted. Alternatively, the tail 532c and the dummy electrode 600 of the sustain electrode 103 are designed to be spaced apart from each other, but due to an error in the process, the tail 532c and the dummy electrode 600 of the sustain electrode 103 come into contact with each other. As a result, an electrical short may occur.

On the other hand, when the shortest distance d between at least one of the scan electrode 102 and the sustain electrode 103 and the dummy electrode 600 is 0.039 to 0.30 times the length L of the long side of the discharge cell, the scan is performed. It can be seen that the shortest distance d between the electrode 102 and the sustain electrode 103 and the dummy electrode 600 may be sufficiently large, and thus an electrical short may not occur.

In consideration of the data of FIG. 8, the shortest distance d between at least one of the scan electrode 102 or the sustain electrode 103 and the dummy electrode 600 is not less than 0.039 times the length L of the long side of the discharge cell. It may be desirable to be less than twice, and more preferably, it is more than 0.039 times and less than 0.12 times.

In the case where the scan electrode 102 and the sustain electrode 103 include the tail portions 522c and 532c protruding in the discharge cell outer direction, the shortest distance d between the tail portions 522c and 532c and the dummy electrode 600. It may be preferable that it is 0.039 times or more and 0.2 times or less of the length L of the long side of a silver discharge cell, and it may be more preferable that it is 0.039 times or more and 0.12 times or less.

It is a figure for demonstrating another example of the structure of a scan electrode and a sustain electrode.

Referring to FIG. 11, at least one of the plurality of protrusions 522a, 522b, 532a, and 532b of the scan electrode 102 and the sustain electrode 103 may have a curvature. Preferably, at least one end portion of the plurality of protrusions 522a, 522b, 532a, and 532b may have a curvature.

Alternatively, the portion where the protrusions 522a, 522b, 532a and 532b and the line portions 521a, 521b, 531a and 531b are connected may have curvature.

Alternatively, the portion where the line portions 521a, 521b, 531a, and 531b and the connecting portions 523 and 533 are connected may have curvature.

Alternatively, the tails 522c and 532c may include portions at least partially having curvature.

As such, when a portion of the scan electrode 102 and the sustain electrode 103 are formed to have a curvature, the manufacturing process of the scan electrode 102 and the sustain electrode 103 may be easier. In addition, it is possible to prevent excessive concentration of wall charges in a specific position during driving, thereby making it possible to stabilize driving.

12 to 13 illustrate a method of manufacturing a plasma display panel.

First, referring to FIG. 12, a black material 1200 may be applied to the front substrate 101 as shown in (a). The black material 1200 may include a material having high blackness, for example, a cobalt (Co) material and a ruthenium (Ru) material.

Thereafter, as illustrated in (b), the electrode material 1210 may be coated on the black material 1200. The electrode material 1210 may include an (Ag) material.

Subsequently, as shown in (c), a photo-mask (1220) having a pattern formed thereon is disposed on the black material 1200 and the electrode material 1210, and the black material is formed using the photomask 1220. 1200 and electrode material 1210 may be exposed together.

Then, the electrode 1240 and the black layer 1230 may be formed as shown in (d). That is, the electrode 1240 and the black layer 1230 are exposed together. Herein, the electrode 1240 may be at least one of a scan electrode, a sustain electrode, and a dummy electrode.

In addition, although not shown, a partition wall may be formed on the rear substrate facing the front substrate to partition the discharge cells, and the front substrate and the rear substrate may be joined to form a plasma display panel.

When the electrode 1240 and the black layer 1230 are exposed together as shown in FIG. 12, the dummy electrode 1330 is located at the point corresponding to the first partition wall 112a as shown in FIG. It is formed with 1320. That is, the dummy electrode 1330, the scan electrode 1310, the sustain electrode 1320, and the black layers 1311, 1321, and 1331 disposed at a point corresponding to the first partition wall 112a are exposed together. will be.

Therefore, in the process of exposing the electrode 1240 and the black layer 1230 together, the shortest distance d between at least one of the scan electrode 102 or the sustain electrode 103 and the dummy electrode 600 is It may be more preferable that it is 0.039 times or more and 0.2 times or less of the length L of the long side of a discharge cell, or 0.039 times or more and 0.12 times or less.

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 to 5 are views for explaining the structure of the scan electrode and the sustain electrode in more detail.

6 to 7 are diagrams for explaining the dummy electrode.

8 to 10 are diagrams for explaining the shortest gap between the scan electrode, the sustain electrode and the dummy electrode.

11 is a view for explaining an example of still another structure of a scan electrode and a sustain electrode;

12 to 13 are views for explaining a method for manufacturing a plasma display panel.

<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 (10)

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 partition wall includes a first partition wall parallel to the scan electrode and the sustain electrode, and a second partition wall intersecting the scan electrode and the sustain electrode, The front substrate further includes a dummy electrode having a single layer structure at a position corresponding to the first partition wall, The shortest distance between at least one of the scan electrode or the sustain electrode and the dummy electrode is 0.039 times or more and 0.2 times or less of the length of the long side of the discharge cell. The method of claim 1, And a shortest interval between at least one of the scan electrode or the sustain electrode and the dummy electrode is 0.039 times or more and 0.12 times or less of the length of the long side of the discharge cell. The method of claim 1, And the dummy electrode is floating or grounded. The method of claim 1, And a black layer disposed between the scan electrode, the sustain electrode, and the front substrate. The method of claim 4, wherein And the scan electrode, the sustain electrode and the black layer are exposed together. The method of claim 1, At least one of the scan electrode and the sustain electrode Line, Protrusions protruding from the line portion toward the center of the discharge cell Plasma display panel comprising a. The method of claim 6, At least one of the scan electrode and the sustain electrode And a tail portion protruding from the line portion in an outward direction of the discharge cell. 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 partition wall includes a first partition wall parallel to the scan electrode and the sustain electrode, and a second partition wall intersecting the scan electrode and the sustain electrode, The front substrate further includes a dummy electrode having a single layer structure at a position corresponding to the first partition wall, The scan electrode and the sustain electrode Line, It includes a tail protruding from the line portion in the discharge cell outward direction, And the shortest gap between the tail and the dummy electrode is 0.039 times or more and 0.2 times or less of the length of the long side of the discharge cell. The method of claim 8, Black layers are disposed between the scan electrodes, the sustain electrodes, and the front substrate, respectively. And the scan electrode, the sustain electrode and the black layer are exposed together. Applying a black material to the front substrate; Applying an electrode material over the black material; Exposing the black material and the electrode material together to form scan electrodes, sustain electrodes, and dummy electrodes parallel to each other; And Forming a barrier rib partitioning a discharge cell on a rear substrate facing the front substrate; Including, The partition wall includes a first partition wall parallel to the scan electrode and the sustain electrode, and a second partition wall intersecting the scan electrode and the sustain electrode, The scan electrode, the sustain electrode and the dummy electrode is a single layer, The dummy electrode is disposed at a position corresponding to the first partition wall, The shortest distance between at least one of the scan electrode or the sustain electrode and the dummy electrode is 0.039 times or more and 0.2 times or less of the length of the long side of the discharge cell.

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