KR20080057760A - Plasma display panel - Google Patents

Abstract

A plasma display panel is provided to lower reflectivity and to improve contrast by arranging a black layer on the other surface of a front substrate. A first electrode(102) and a second electrode(103) are arranged side by side on a surface of a front substrate(101). A black layer(120) is arranged on the other surface of the front substrate. A back substrate(111) is arranged to be opposite to the front substrate. Barrier ribs(112a,112b) divide discharge cells between a surface of the front substrate and the back substrate. A width of the black layer is more than 0.47 times and less than 1.3 times of a height of the barrier rib. The black layer includes a first black layer which is in a line with the first electrode and second electrode, and a second black layer crossing the first black layer. A width of the first black layer is different from that of the second black layer. A transparent metal layer is arranged between another surface of the front substrate and the black layer.

Description

Plasma Display Panel

1 is a view for explaining the structure of a plasma display panel according to an embodiment of the present invention.

2 is a diagram for explaining the black layer in more detail.

3A to 3C are diagrams for explaining the width of the black layer.

4 is a diagram for explaining an example of still another structure of a black layer.

5 is a diagram for explaining the widths of the first black layer and the second black layer.

6 is a view for explaining another structure of the plasma display panel according to an embodiment of the present invention.

FIG. 7 is a diagram for describing an image frame for implementing gray levels of an image in a plasma display panel according to an embodiment of the present invention. FIG.

8 is a view for explaining an example of an operation of a plasma display panel according to an embodiment of the present invention in a subfield included in an image frame;

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

101: front substrate 102: first electrode

103: second electrode 104: upper dielectric layer

105: protective layer 111: back substrate

112: partition wall 113: third electrode

114: phosphor layer 115: lower dielectric layer

112a: second partition 112b: first partition

120: black layer

The present invention relates to a plasma display panel.

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

The driving signal is supplied to the discharge cell through the electrode.

Then, the discharge is generated by the drive signal supplied in the discharge cell. Here, when discharged by a drive signal in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the 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 embodiment of the present invention relates to a plasma display panel that improves contrast characteristics of an image implemented by lowering a panel reflectance.

Plasma display panel according to an embodiment of the present invention for achieving the above object is disposed on the front surface and the first electrode and the second electrode which are parallel to each other, the other surface and the black substrate is disposed opposite the front substrate And a barrier rib partitioning a discharge cell between one surface of the front substrate and the rear substrate, wherein the width of the black layer is not less than 0.47 times and not more than 1.3 times the height of the barrier.

Moreover, the width of a black layer is 0.68 times or more and 0.92 times or less of the height of a partition.

The black layer also includes a first black layer parallel to the first electrode and the second electrode and a second black layer intersecting the first black layer.

Also, the width of the first black layer and the width of the second black layer are different from each other.

In addition, a substantially transparent metal layer is further disposed between the other surface of the front substrate and the black layer.

In addition, the black layer is disposed at a position corresponding to the partition wall on the other surface of the front substrate.

Another plasma display panel according to an embodiment of the present invention for achieving the above object includes a front substrate, a rear substrate disposed opposite the front substrate and partition walls for partitioning the discharge cell between the front substrate and the rear substrate; The first electrode and the second electrode which are parallel to each other are disposed on one surface of the front substrate, the metal layer is disposed on the other surface, and the black layer is disposed on the upper surface of the metal layer.

In addition, the width of a black layer is 0.47 times or more and 1.3 times or less of the height of a partition.

Moreover, the width of a black layer is 0.68 times or more and 0.92 times or less of the height of a partition.

The black layer also includes a first black layer parallel to the first electrode and a second electrode and a second black layer intersecting the first black layer.

Also, the width of the first black layer and the width of the second black layer are different from each other.

In addition, the metal layer comprises a substantially transparent metal material.

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

1 is a view for explaining the structure of a plasma display panel according to an embodiment of the present invention.

Referring to FIG. 1, a plasma display panel according to an embodiment of the present invention may face the front substrate 101 and the front substrate 101 on which the first and second electrodes 102 and 103 are arranged in parallel with each other. The rear substrate 111 on which the third electrode 113 disposed and intersects the first electrode 102 and the second electrode 103 is disposed is bonded to each other.

Here, the first electrode 102 and the second electrode 103 are disposed on one surface of the front substrate 101, and the black layer 120 is disposed on the other surface of the front substrate 101.

Although not shown, an image filter may be disposed on the other surface of the front substrate 101 on which the black layer 120 is disposed.

This black layer 120 will be described in more detail later.

Although not shown in FIG. 1, the first electrode 102 and the second electrode 103 may include a transparent electrode and a bus electrode, respectively.

The transparent electrode may include a transparent material such as indium tin oxide (ITO).

The bus electrode may include a metal material having excellent electrical conductivity such as silver (Ag).

Alternatively, the first electrode 102 and the second electrode 103 may have a single layer structure. For example, the first electrode 102 and the second electrode 103 may be an electrode in which the above-mentioned transparent electrode is omitted, for example, an ITO-Less electrode.

In addition, although not shown in FIG. 1, another black layer may be disposed between one surface of the front substrate 101 and the first electrode 102 and the second electrode 103. For example, when the first electrode 102 and the second electrode 103 each include a transparent electrode and a bus electrode, between the transparent electrode and the bus electrode of the first electrode 102 and the second electrode 103. Another black layer may be disposed between the transparent electrode and the bus electrode, respectively.

Meanwhile, a dielectric layer covering one surface of the first electrode 102 and the second electrode 103, for example, an upper dielectric, on one surface of the front substrate 101 on which the first electrode 102 and the second electrode 103 are disposed. Layer 104 may be disposed.

This upper dielectric layer 104 limits the discharge current of the first electrode 102 and the second electrode 103 and can insulate between the first electrode 102, Y and the second electrode 103, Z. have.

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

Meanwhile, an electrode, for example, a third electrode 113 is disposed on the rear substrate 111, and a dielectric layer covering the third electrode 113 is disposed on the rear substrate 111 on which the third electrode 113 is disposed. Dielectric layer 115 may be disposed.

The lower dielectric layer 115 may insulate the third electrode 113.

In addition, a partition 112 having a discharge space, that is, a stripe type, a well type, a delta type, a honeycomb type, and the like, which partitions a discharge cell, is formed on an upper portion of the lower dielectric layer 115. Can be arranged. Accordingly, red (R), green (G), and blue (B) discharge cells may be provided between one surface of the front substrate 101 and the rear substrate 111.

In addition, in addition to the red (R), green (G), and blue (B) discharge cells, white (W) or yellow (Yellow: Y) discharge cells may be further provided.

Meanwhile, although the widths of the red (R), green (G), and blue (B) discharge cells in the plasma display panel according to an embodiment of the present invention may be substantially the same, red (R) and green (G) may be substantially the same. And the width of at least one of the blue (B) discharge cells may be different from that of the other discharge cells.

For example, the width of the red (R) discharge cell is the smallest, and the width of the green (G) and blue (B) discharge cells can be made larger than the width of the red (R) discharge cell. Here, the width of the green (G) discharge cell may be substantially the same as or different from the width of the blue (B) discharge cell.

The width of the phosphor layer 114, which will be described later, disposed in the discharge cell is then changed in relation to the width of the discharge cell. For example, the width of the blue (B) phosphor layer disposed in the blue (B) discharge cell is wider than the width of the red (R) phosphor layer disposed in the red (R) discharge cell, and at the same time in the green (G) discharge cell. The width of the green (G) phosphor layer disposed may be wider than the width of the red (R) phosphor layer disposed in the red (R) discharge cell.

Then, color temperature characteristics of the image to be implemented may be improved.

In addition, the plasma display panel according to the exemplary embodiment of the present invention may have not only the structure of the partition wall 112 shown in FIG. 1 but also the structure of the partition wall having various shapes. For example, the partition wall 112 includes a first partition wall 112b and a second partition wall 112a, where the height of the first partition wall 112b and the height of the second partition wall 112a are different from each other. Etc. may be possible.

In the case of the differential partition wall structure, the height of the first partition wall 112b among the first partition wall 112b or the second partition wall 112a may be lower than the height of the second partition wall 112a.

Meanwhile, although FIG. 1 shows and describes each of the red (R), green (G), and blue (B) discharge cells arranged on the same line, it may be arranged in a different shape. For example, a delta type arrangement in which red (R), green (G) and blue (B) 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 disposed on at least one of the front substrate 101 and the rear substrate 111.

Here, a predetermined discharge gas may be filled in the discharge cell partitioned by the partition wall 112.

In addition, a phosphor layer 114 that emits visible light for image display may be disposed in the discharge cell partitioned by the partition wall 112. For example, red (R), green (G), and blue (B) phosphor layers may be disposed.

In addition to the red (R), green (G), and blue (B) phosphors, a white (W) and / or yellow (Y) phosphor layer may be further disposed.

In addition, the thickness of the phosphor layer 114 in at least one of the red (R), green (G), and blue (B) discharge cells may be different from other discharge cells. For example, the thickness of the phosphor layer of the green (G) discharge cell, ie the phosphor layer in the green (G) phosphor layer or the blue (B) discharge cell, ie the blue (B) phosphor layer, is It may be thicker than the thickness of the phosphor layer, ie the red (R) phosphor layer. Here, the thickness of the green (G) phosphor layer may be substantially the same as or different from the thickness of the blue (B) phosphor layer.

In the above description, only one example of the plasma display panel according to an exemplary embodiment of the present invention is illustrated and described. However, the present invention is not limited to the plasma display panel having the above-described structure. For example, the above description shows only the case where the upper dielectric layer number 104 and the lower dielectric layer number 115 are each one layer, but one or more of the upper dielectric layer or the lower dielectric layer is a plurality of layers. It is also possible to make.

In addition, the width or thickness of the third electrode 113 disposed on the rear substrate 111 may be substantially constant, but the width or thickness inside the discharge cell may be different from the width or thickness outside the discharge cell. will be. For example, the width or thickness inside the discharge cell may be wider or thicker than that outside the discharge cell.

Next, FIG. 2 is a diagram for explaining the black layer in more detail.

Referring to FIG. 2, a first electrode 102 and a second electrode 103 are disposed on one surface of the front substrate 101, and a black layer having a width of W on the other side of the front substrate 101. 120 is disposed.

This black layer 120 has a darker color than the colors of the first electrode 102 and the second electrode 103. For example, the black layer 120 has a substantially black color.

In addition, the black layer 120 may include a material having a substantially black color, such as carbon (C), ruthenium (Ru), or the like, and may include an electrically conductive material.

As such, the reason for disposing the black layer 120 on the other surface of the front substrate 101 will be described below.

For example, assume that the black layer 120 is not disposed on the other surface of the front substrate 101.

In this case, the light incident from the outside is reflected by the partition wall 112 or the like, and as the reflected light is emitted to the outside, the panel reflectance increases, and thus the contrast characteristic of the image implemented on the screen of the plasma display panel is increased. ) Properties may deteriorate.

Meanwhile, in order to reduce the panel reflectance, the black layer may be disposed in the same manner as the method of disposing the first electrode 102 and the second electrode 103 on one surface of the front substrate 101. In this case, the manufacturing process of the plasma display panel becomes more complicated, and thus the time and manufacturing cost required for the manufacturing process may increase.

On the other hand, when the black layer 120 is disposed on the other surface of the front substrate 101 as in the exemplary embodiment of the present invention, the panel reflectance is reduced by preventing reflection of light incident from the outside.

In addition, the black layer 120 is attached to the other surface of the front substrate 101 by attaching the black sheet by a simple method such as laminating before placing the image filter on the other surface of the front substrate 101. Can be placed. Thereby, the time and manufacturing cost which require a manufacturing process can be reduced.

In addition, the black layer 120 may be disposed at a position corresponding to the partition wall 112 on the other surface of the front substrate 101. As a result, the reflectance of the panel can be further reduced.

3A to 3C attached to the width W of the black layer 120 will be described in more detail as follows.

3A to 3C are diagrams for explaining the width of the black layer.

First, in FIG. 3A, when the ratio of the width W of the black layer 120 to the height h of the partition 112 has a value between 0.3 and 1.4, that is, the width W of the black layer 120 is the partition wall. The panel reflectance and the luminance are observed when 0.3 times or more and 1.4 times or less the height h of 112. Here, in FIG. 3, the X mark is an indication that the panel reflectance is excessively high or the luminance is too low, which is poor, the o mark is a good indication, and the o mark is a very good indication.

Referring to FIG. 3A, when the width W of the black layer 120 is 0.3 times or more and 0.45 times or less the height h of the partition wall 112, the width W of the black layer 120 is as shown in FIG. 3B. ) Is excessively small so that light incident from the outside is relatively reflected by the partition wall 112. In addition, most of the light incident in the lateral direction of the panel may be reflected by the partition wall 112. As a result, the panel reflectance is poor.

On the other hand, when the width W of the black layer 120 is 0.47 times or more and 0.61 times less than the height h of the partition wall 112, the width W of the black layer 120 is appropriate and light is incident from the outside. The reflection by this partition 112 can be prevented to some extent, and panel reflectance is favorable by this.

In addition, when the width W of the black layer 120 is 0.68 times or more than the height h of the partition wall 112, the width W of the black layer 120 is sufficiently large, and thus, light incident from the outside The reflection by the partition 112 can be prevented sufficiently. In addition, in this case, since the width W of the black layer 120 is sufficiently large, even if light is incident from the side surface of the panel, a part of the side surface of the partition wall 112 may be covered by the shadow of the black layer 120. Accordingly, the panel reflectance is very good by suppressing the reflection of light incident from the side surface.

On the other hand, when the width W of the black layer 120 is 1.4 times or more the height h of the partition wall 112, the width W of the black layer 120 is excessively excessive as shown in FIG. 3C. As the cursor opening ratio is excessively reduced, and thus, when the visible light generated therein is emitted to the outside, the likelihood of the visible light being absorbed or reflected by the black layer 120 is relatively high. As a result, the luminance is poor.

On the other hand, when the width W of the black layer 120 is 1.0 times or more than 1.3 times the height h of the partition wall 112, the width W of the black layer 120 is appropriately generated internally from the outside. It is possible to prevent the light from being absorbed or reflected by the black layer 120 to some extent, and thus the luminance is good.

In addition, when the width W of the black layer 120 is 0.3 times or more and 0.92 times or less the height h of the partition 112, the width W of the black layer 120 is sufficiently small, so that the aperture ratio is sufficiently high. Has a value. As a result, the circulation is very good.

3A to 3C, the width W of the black layer 120 is preferably 0.47 times or more and 1.3 times or less of the height h of the partition wall 112, and more preferably 0.68 times or more. 0.92 times or less.

Meanwhile, as in the case of FIG. 1, the partition wall 112 includes a first partition wall 112b and a second partition wall 112a, where the height of the first partition wall 112b and the height of the second partition wall 112a are different from each other. In a case where it is different, it is preferable to set the height h of the partition 112 to the height of any one of the 1st partition 112b or the 2nd partition 112a which is higher.

Next, FIG. 4 is a figure for demonstrating an example of the other structure of a black layer.

Referring to FIG. 4, the black layer 120 includes a first black layer 120a parallel to the first electrode 102 and the second electrode 103, and a second black layer crossing the first black layer 102a. 102b.

Here, the first black layer 120a is disposed at a position corresponding to the first partition wall 112b on the other surface of the front substrate 101, and the second black layer 120b is disposed on the second surface of the front substrate 101. It is preferable to be disposed at a position corresponding to the partition 112a.

As such, when the black layer 120 includes the first black layer 120a and the second black layer 120b that cross each other, contrast characteristics may be further improved by further lowering the panel reflectance.

Next, FIG. 5 is a diagram for describing the widths of the first black layer and the second black layer.

Referring to FIG. 5, the widths W1, W2, W3, and W4 of the first black layer 120a and the widths Wa, Wb, Wc, and Wd of the second black layer 120b are different from each other.

As such, when the widths W1, W2, W3, and W4 of the first black layer 120a and the widths Wa, Wb, Wc, and Wd of the second black layer 120b are different from each other, the incident light is incident in a specific direction. The reflectance of light can be reduced intensively.

Here, the width of the first black layer 120a, that is, at least one of W1, W2, W3, and W4 may have different values. For example, W1 and W3 have the same value, W2 and W4 have the same value, and W1 and W3 may have different values from W2 and W4. Alternatively, it is also possible for W1, W2, W3, and W4 to have substantially the same value.

In addition, at least one of the width of the second black layer 120b, that is, Wa, Wb, Wc, and Wd, may have a different value. For example, it is also possible that Wa and Wc have the same value, Wb and Wd have the same value, and Wa and Wc have different values from Wb and Wd. Alternatively, it is also possible that Wa, Wb, Wc, and Wd have substantially the same value.

6 is a view for explaining another structure of the plasma display panel according to an embodiment of the present invention.

Referring to FIG. 6, the metal layer 600 is disposed on the other surface of the front substrate 101, and the black layer 120 is disposed on the metal layer 600. In other words, the metal layer 600 is disposed between the other surface of the front substrate 101 and the black layer 120.

The metal layer 600 may be substantially transparent and may include a substantially transparent metal material such as indium tin oxide (ITO), or the like.

As such, when the metal layer 600 is disposed on the other surface of the front substrate 101 and the black layer 120 is disposed on the metal layer 600, the electromagnetic waves may be induced during driving. By blocking the discharge of charges to the outside can reduce the occurrence of electromagnetic interference (Electro-Magnetic Interference, EMI).

In this case, if the black layer 120 includes an electrically conductive material, electromagnetic interference may be further reduced.

Next, FIG. 7 is a diagram for describing an image frame for implementing gray levels of an image in a plasma display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 7, an image frame for implementing gray levels of an image in a plasma display panel according to an exemplary embodiment of the present invention may be divided into a plurality of subfields having different emission counts.

Although not shown, one or more subfields among the plurality of subfields may be grayed out according to a reset period for initializing discharge cells, an address period for selecting discharge cells to be discharged, and the number of discharges. It can be divided into the sustain period to implement.

For example, when an image is to be displayed in 256 gray scales, for example, one image frame is divided into eight subfields SF1 to SF8 as shown in FIG. 7, and each of the eight subfields SF1 to SF8, respectively. Can be subdivided into a reset period, an address period and a sustain period.

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

A plasma display panel according to an embodiment of the present invention uses a plurality of image frames to implement an image, for example, to display an image of 1 second. For example, 60 image frames are used to display an image of 1 second. In this case, the length T of one image frame may be 1/60 second, that is, 16.67 ms.

In FIG. 7, only one image frame includes eight subfields. However, the number of subfields constituting one image frame may be variously changed. For example, one video frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one video frame may be configured with 10 subfields.

In addition, in FIG. 7, subfields are arranged in an order of increasing magnitude of gray scale weight in one image frame. Alternatively, subfields may be arranged in order of decreasing gray scale weight in one image frame. Alternatively, subfields may be arranged regardless of the gray scale weight.

Next, FIG. 8 is a diagram for explaining an example of an operation of a plasma display panel according to an embodiment of the present invention in a subfield included in an image frame.

Referring to FIG. 8, in the set-up period of the reset period for initialization, the voltage rises from the first voltage V1 to the second voltage V2 with the first electrode and then from the second voltage V2 to the third voltage. A ramp-up signal is supplied in which the voltage gradually rises to V3. Here, the first voltage V1 may be a voltage of the ground level GND.

In this setup period, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. By this setup discharge, some wall charges can be accumulated in the discharge cells.

In a set-down period after the setup period, a ramp-down signal in a direction opposite to that of the ramp ramp signal is supplied to the first electrode after the ramp ramp signal.

Here, the falling ramp signal may gradually fall from the peak voltage of the rising ramp signal, that is, the fourth voltage V4 lower than the third voltage V3 to the fifth voltage V5.

As the falling ramp signal is supplied, a weak erase discharge, that is, a setdown discharge, occurs in the discharge cell. By this set-down discharge, wall charges such that address discharge can be stably generated in the discharge cells remain uniformly.

In the address period after the reset period, a scan bias signal that substantially maintains the lowest voltage of the falling ramp signal, that is, a voltage higher than the fifth voltage V5, for example, the sixth voltage V6, is supplied to the first electrode.

In addition, a scan signal falling by a scan voltage (Vy) from the scan bias signal may be supplied to the first electrode.

On the other hand, the width of the scan signal in units of subfields may vary. That is, the width of the scan signal in at least one subfield may be different from the width of the scan signal in 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 may 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 first electrode, a data signal that rises by the magnitude of the data voltage (Vd) may be supplied to the third electrode to correspond to the scan signal.

As 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 caused by the wall charges generated in the reset period are added. have.

Here, the sustain bias signal may be supplied to the second electrode to prevent the address discharge from becoming unstable due to the interference of the second electrode in the address period.

Here, the sustain bias signal may maintain a substantially constant sustain bias voltage Vz smaller than the voltage of the sustain signal supplied in the sustain period and greater than the voltage of the ground level GND.

Thereafter, in the sustain period for displaying an image, a sustain signal may be supplied to at least one of the first electrode and the second electrode. For example, a sustain signal may be alternately supplied to the first electrode and the second electrode.

When such a sustain signal is supplied, the discharge cell selected by the address discharge is sustained discharge between the first electrode and the second electrode when the sustain signal is supplied while the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal are added. , Display discharge may occur.

In this way, an image may be implemented on the screen of the plasma display panel.

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.

As described in detail above, the plasma display panel according to the exemplary embodiment of the present invention has an effect of lowering the panel reflectance to improve contrast characteristics by disposing a black layer on the other surface of the front substrate.

Claims (12)

A front substrate having a first electrode and a second electrode arranged in parallel on one surface thereof, and a black layer disposed on the other surface thereof; A rear substrate disposed to face the front substrate; And A partition wall partitioning a discharge cell between one surface of the front substrate and the rear substrate; Including, And a width of the black layer is 0.47 times or more and 1.3 times or less the height of the partition wall. The method of claim 1, And a width of the black layer is 0.68 to 0.92 times the height of the partition wall. The method of claim 1, And the black layer includes a first black layer parallel to the first electrode and a second electrode and a second black layer crossing the first black layer. The method of claim 3, wherein The width of the first black layer and the width of the second black layer is different plasma display panel. The method of claim 1, And a substantially transparent metal layer further disposed between the other surface of the front substrate and the black layer. The method of claim 1, And the black layer is disposed at a position corresponding to the partition wall on the other surface of the front substrate. Front substrate; A rear substrate disposed to face the front substrate; And A partition wall partitioning a discharge cell between the front substrate and the rear substrate; Including, The first electrode and the second electrode which are parallel to each other is disposed on one surface of the front substrate, the metal layer is disposed on the other surface, And a black layer disposed on the metal layer. The method of claim 7, wherein And a width of the black layer is 0.47 times or more and 1.3 times or less the height of the partition wall. The method of claim 8, And a width of the black layer is 0.68 to 0.92 times the height of the partition wall. The method of claim 7, wherein And the black layer includes a first black layer parallel to the first electrode and a second electrode and a second black layer crossing the first black layer. The method of claim 10, The width of the first black layer and the width of the second black layer are different from each other. The method of claim 7, wherein And the metal layer comprises a substantially transparent metal material.

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