KR100884532B1 - Plasma display panel - Google Patents

Abstract

The present invention relates to a plasma display panel that can improve the discharge efficiency of each discharge cell without reducing the opening area of the discharge cells corresponding to each pixel. The present invention relates to a front substrate and a rear substrate which are disposed to face each other, and a front substrate and a rear substrate. A partition wall defining a plurality of discharge cells between the substrate, the partition wall including a plurality of first partition walls formed along a first direction and a plurality of first partition walls formed along a second direction crossing the first direction; A first electrode formed within the first partition wall including two partition walls and arranged in a first direction and spaced apart from each other by N (N is a natural number), and three-dimensionally spaced apart from the first electrode And a second electrode formed in the second partition to cross and a branch electrode disposed in the second partition and overlapping with the at least one second electrode and extending from the first electrode. .

Plasma display panel, scan electrode, address electrode, branch electrode.

Description

Plasma Display Panel {PLASMA DISPLAY PANEL}

1 is a perspective view showing the entire structure of a plasma display panel according to a first embodiment of the present invention.

2 is a cross-sectional view taken along the line I-I of FIG.

3 is a cross-sectional view taken along line II-II of FIG. 1.

4 is a cross-sectional view taken along line III-III of FIG. 1.

5 is a schematic diagram showing an electrode structure of a plasma display panel according to a first embodiment of the present invention.

FIG. 6 is a plan view of the plasma display panel cut along the line III-III of FIG. 1 according to the first modification of the first embodiment.

FIG. 7 is a plan view of the plasma display panel according to the second modification of the first embodiment, taken along the line III-III of FIG. 1.

FIG. 8 is a plan view of the plasma display panel according to the third modified example of the first embodiment, taken along line III-III of FIG. 1.

FIG. 9 is a plan view Z-Y cut along the line I-I of FIG. 1 according to the fourth modification of the first embodiment.

FIG. 10 is a Z-Y plan view of the plasma display panel cut along the line I-I of FIG. 1 according to the fifth modification of the first embodiment.

11 is a perspective view showing the entire structure of a plasma display panel according to a second embodiment of the present invention.

FIG. 12 is a cross-sectional view taken along line II of FIG.

FIG. 13 is a cross-sectional view taken along line II-II of FIG. 11.

FIG. 14 is a plan view taken along line III-III of FIG. 11.

FIG. 15 is a plan view taken along line III-III of FIG. 11, illustrating a plasma display panel according to a modification of the second embodiment.

<Description of Main Reference Signs>

100, 200: PDP 110, 210: Front board

120 and 220: back substrates 122 and 222: dielectric layers

124 and 224 barrier ribs 126 and 134 and 226 phosphor layer

128, 228: scanning electrode 132: floating electrode

130, 130A, 130B, 130C, 230: address electrode

C, C ': discharge cell

The present invention relates to a plasma display panel, and more particularly, to an electrode structure of a plasma display panel.

As is well known, the plasma display panel (hereinafter referred to as "PDP") is mainly composed of a three-electrode surface discharge structure capable of emitting light efficiently.

However, in order to further increase the luminance of the PDP, it is necessary to improve the electrode structure, the partition shape, and the like, and to increase the luminous efficiency by the plasma discharge, the aperture ratio of the discharge cell, and the like. Of course, further technical improvements regarding the kind of the discharge gas enclosed in the discharge cell, the mixing ratio thereof, and the like must also be made.

Nevertheless, more attention is focused on the electrode structure which directly affects the luminous efficiency, and thus many research results are disclosed.

For example, Japanese Patent Laid-Open No. 2005-276810 discloses a technique relating to a PDP having a ring-shaped electrode structure. According to this, as a technical improvement for improving the luminous efficiency of a PDP, the electrode structure which has a pair of discharge electrode is contained in the partition which partitions a discharge cell, and forms the ring-shaped electrode loop which surrounds a discharge cell is disclosed. Further, a ladder electrode structure in which ring electrodes are connected is disclosed.

By employing the above-described ring-shaped electrode structure, a discharge path is formed in the vicinity of each partition wall surface of the discharge cell, and furthermore, the plasma is concentrated in the center so that light emission by more efficient plasma discharge can be realized.

However, in order to concentrate the plasma in the center of the discharge cell, it is necessary to make the opening diameter of the discharge cell sufficiently small. For this reason, there was a problem that the opening diameter of the discharge cell was small, the light emitting area was reduced, and the luminance of the PDP was lowered.

On the contrary, when the opening diameter of the discharge cells is large, since the plasma is not sufficiently concentrated in the center, there is a problem that high luminous efficiency cannot be realized for each discharge cell.

SUMMARY OF THE INVENTION The present invention was devised to solve the above problems, and an object thereof is to provide a plasma display panel capable of generating high-efficiency plasma discharge for each discharge cell without reducing the opening area of the discharge cell corresponding to each pixel. To provide.

In order to achieve the above object, the plasma display panel according to the present invention includes a front substrate and a rear substrate which are disposed to face each other, and partition walls for partitioning a plurality of discharge cells between the front substrate and the rear substrate. Among the first partitions arranged in the first direction, N (a) includes a plurality of first partitions formed along the first direction and a plurality of second partitions formed along the second direction crossing the first direction. N is disposed in the first electrode formed inside the first partition wall spaced apart from each other, and the second electrode and the second partition wall formed in the second partition wall three-dimensionally spaced apart from and intersecting the first electrode, and at least The branch electrode is overlapped with one second electrode and extends from the first electrode.

Accordingly, the branch electrodes and the second electrodes can emit light of a plurality of minute discharge cells constituting the subpixels at substantially the same time, and the light emission efficiency due to plasma discharge generated in each discharge cell can be improved, and sufficient The opening area of the discharge cell can be secured. As a result, high luminance plasma light emission can be realized.

The first electrode may include a pair of sub electrodes positioned at both sides of the discharge cell. Therefore, the discharge efficiency of the plasma discharge generated in each discharge cell can be improved.

The first electrode may further include a bridged electrode connecting the pair of sub-electrodes. Therefore, the discharge efficiency of the plasma discharge generated in each discharge cell can be improved.

The first electrode and the second electrode are contained in the partition wall for partitioning the discharge cell. Therefore, it is possible to realize side discharge of the side wall discharge type which forms the discharge path in the vicinity of the side wall surface of the discharge cell while protecting each electrode from ion sputtering.

The branch electrodes may be spaced apart directly above or directly below the first electrode. Therefore, the plasma discharge generated between the branch electrode and the first electrode can be made more efficient.

The discharge cell may have a substantially circular or polygonal cross sectional shape. Therefore, it becomes possible to form more discharge cells in a fixed area. A larger opening area can be realized.

In addition, a third electrode having the same shape as the first electrode and disposed so that the second electrode is positioned between the first electrode and generating a plasma discharge between the first electrode and the second electrode may be provided. have.

 For example, it is possible to form a three-electrode discharge structure in which the second electrode is called an address electrode and the first electrode and the third electrode are scanning sustain electrodes.

In addition, a third electrode having the same shape as the second electrode and disposed so that the first electrode is positioned between the second electrode and generating a plasma discharge between the second electrode and the first electrode may be provided. have.

For example, it is possible to form a three-electrode discharge structure in which the first electrode is called an address electrode, and the second electrode and the third electrode are scanning sustain electrodes.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like elements throughout the specification.

First, a plasma display panel (hereinafter referred to as "PDP") according to a first embodiment of the present invention will be described.

This embodiment illustrates a structure of a PDP that generates discharge of a plurality of discharge cells simultaneously by at least a pair of electrodes.

Here, the pair of electrodes may be an address electrode and a scan electrode. For example, the first electrode may be an address electrode and the second electrode may be a scan electrode.

Therefore, in the electrode structure of the PDP partitioning a plurality of discharge cells, a plurality of discharge cells having a small opening diameter can emit light simultaneously by a pair of electrodes, and the efficiency of plasma discharge in each discharge cell can be improved. In addition, the total opening area of the discharge cells allocated to each pixel can be more widely secured.

Hereinafter, the overall configuration, electrode arrangement, electrode shape, and the like of the PDP according to the present embodiment will be described, and the operational effects obtained by the structure will be described.

First, the overall configuration of the PDP according to the present embodiment will be described with reference to FIG. 1.

1 is a perspective view showing the entire structure of a plasma display panel according to a first embodiment of the present invention.

The PDP 100 shown in FIG. 1 is a schematic diagram for explaining the features of the present embodiment, except for the case where the width, height, thickness, or depth of each component is clearly defined. It is a design matter that can be changed accordingly.

Therefore, if the configuration having the technical features of the present embodiment described below, it can be interpreted to belong to the technical scope of the present embodiment, the same hatched parts in the drawings are considered to be the same component.

The PDP 100 according to the present embodiment basically has a front substrate 110, a rear substrate 120, a dielectric layer 122, a partition 124, a phosphor layer 126, and a first electrode 128 (hereinafter, A scan electrode) and a second electrode 130 (hereinafter referred to as an address electrode), wherein the spaces partitioned by the partition wall 124 between the front substrate 110 and the rear substrate 120 are formed. Called discharge cell C. FIG.

The front substrate 110 is disposed on the front surface of the PDP 100 and is made of a material capable of transmitting visible light generated in the discharge cell (C). For example, the front substrate 110 may be made of "soda lime glass."

In addition, the front substrate 110 may be coated with SiO _{2 or the} like. In addition, a phosphor layer may be formed on the front substrate 110 surface (the surface partitioning the discharge cell).

On the other hand, the front substrate 110 also serves as a cover for sealing the discharge gas filled in the discharge cell (C).

As a discharge gas, it is common to use inert gas / lean gas, such as Xe and Ne, and these mixed gas can also be used. However, the PDP 100 of the present embodiment is not limited to the kind of discharge gas used.

The rear substrate 120 is disposed to face the front substrate 110, and is formed on the top surface of which a configuration necessary for plasma discharge such as a discharge cell C is formed.

The back substrate 120 may be made of the same material as the front substrate 110, and together with the front substrate 110 is to be the main factor in determining the thickness of the PDP 100, it is possible to form as thin as possible desirable. In particular, the front substrate 110 is preferably formed thinner so as to increase the transmittance of visible light generated in the discharge cell (C).

The dielectric layer 122 is an insulating layer formed on the back substrate 120. As is well known, the PDP 100 is an apparatus for generating gas discharge by ionizing discharge gas in a discharge cell by a potential difference generated between at least a pair of electrodes.

Therefore, it is not preferable that the conductive member is exposed to the discharge cell C. Of course, the back substrate 120 is often formed of an insulating material such as soda-lime glass, but insulation is not necessarily secured by conditions such as temperature.

In addition, although not shown in FIG. 1, when the electrode is disposed on the back substrate 120, the dielectric layer 122 may also cover and insulate the electrode.

The dielectric layer 122 may be made of, for example, a dielectric material mainly containing PbO, B ₂ O _3, SiO ₂ , or the like.

The partition wall 124 is formed between the front substrate 110 and the rear substrate 120 to partition the discharge cell (C). The partition 124 may be made of a dielectric material such as the dielectric layer 122.

Unlike the general three-electrode surface discharge type PDP, the PDP 100 according to the present embodiment generates plasma discharge by a pair of electrodes formed in the partition wall 124.

Accordingly, the partition wall 124 serves as a substantial electrode surface that protects the electrode from sputtering caused by the collision of ionic particles and accumulates wall charges on the surface thereof.

Although not shown in FIG. 1, it is also possible to form a light emitting surface by applying a phosphor to the surface of the partition wall 124.

In general, the phosphor is often white, and even when the ultraviolet rays generated by the plasma discharge directly reach, as well as when the ultraviolet rays do not reach, reflecting the visible light generated from the phosphor layer 126 described later to improve the brightness. To help.

The partition wall 124 constituting the wall surface of the discharge cell C has a first partition wall (hereinafter referred to as an X partition wall) constituting a wall surface perpendicular to the X direction, and a second partition wall constituting a wall surface perpendicular to the Y direction. (Hereinafter referred to as Y bulkhead).

Of course, each of the X and Y partition walls forms a part of the partition wall 124 formed integrally and partitions each discharge cell (C).

The phosphor layer 126 is made of an ultraviolet-excited phosphor that absorbs ultraviolet light and emits light of a specific wavelength (especially visible light), and emits visible light by receiving ultraviolet light emitted by plasma discharge generated in the discharge cell (C). .

In general, the phosphor material for forming the phosphor layer 126 includes Zn ₂ SiO ₄ : Mn, which emits green, such as BO ₃ : Eu or Y ₂ O ₃ : Eu, which emits red (Y, Gd); Or BaAl ₁₂ O ₁₉ : Mn or the like, and BaMgAl ₁₄ O ₂₃ : Eu or the like which emits blue may be used.

As shown in FIG. 1, in this embodiment, the phosphor layer 126 is formed on the upper surface of the dielectric layer 122 and is located on the lower surface of the discharge cell C. As shown in FIG. However, the phosphor layer 126 may be formed on at least one surface of the barrier rib 124 and may be formed on the surface of the front substrate 110 in contact with the discharge cell (C).

The scan electrode 128 generates a potential difference between the address electrode 130 described later and ionizes the discharge gas in the discharge cell C. FIG.

In this embodiment, the scan electrode 128 is formed inside the partition wall 124, and illustrates a configuration in which the front surface (front surface) of the scan electrode 128 is covered with a dielectric material (the partition wall 124).

The scan electrode 128 includes a line portion extending along the Y direction and a branch portion extending in the X direction perpendicular to the line portion. Of course, the line portion and the branch portion are integrally formed as part of the scan electrode 128.

Here, the branch portion of the scan electrode 128 is specifically called a branch electrode. The cross section of the branch electrode which comprises the scanning electrode 128 is shown in FIG. 3 which shows the X-Z cross section cut along the II-II line of the perspective view of the PDP 100 shown in FIG.

In particular, the branch electrode of the scan electrode 128 positioned in the center of FIG. 3 extends corresponding to the side surfaces of two adjacent discharge cells C, and partitions the widths of the two discharge cells C and partitions therebetween. 124) is formed to have a combined length.

The address electrode 130 generates a potential difference between the scan electrode 128 and ionizes the discharge gas in the discharge cell C. As shown in FIG.

Although not clearly shown in FIG. 1, the address electrode 130 is disposed to be spaced apart from and intersect the scan electrode 128 in three dimensions (Z direction).

That is, the address electrode 130 has a linear structure extending in the X direction, and has a positional relationship intersecting with the scan electrode 128 in which the line portion extends in the Y direction.

In addition, the address electrode 130 is disposed to be spaced directly above the branch electrode of the scan electrode 128 extending in the X direction, and forms a discharge path between the branch electrode and the branch electrode.

On the other hand, in the Y partition wall of the partition wall 124 according to the present embodiment, the individual electrodes constituting the two address electrodes 130 are arranged side by side along the Y direction at intervals.

Therefore, the address electrode 130 is partitioned by the Y partition wall and disposed on both side walls of two adjacent discharge cells C, respectively.

In other words, respective discharge paths are formed between the address electrodes 130 and the branch electrodes of the scan electrodes 128 arranged in the two Y partition walls constituting both side walls of each discharge cell C, and plasma discharge is induced. do.

At this time, the pair of address electrodes 130 corresponding to both side walls of the discharge cell C should be configured such that the operation is interlocked. This is because plasma discharges generated at both wall surfaces of each discharge cell C must be generated at the same time.

Of course, it may be possible to emit the discharge cells C even though the plasma discharges are not strictly generated simultaneously. However, in the present invention, such a configuration will not be considered.

Here, each individual electrode constituting the pair of address electrodes 130 is called a sub electrode.

Hereinafter, the electrode arrangement and the electrode shape of the PDP 100 according to the present embodiment will be described in more detail with reference to FIGS. 2 to 5.

FIG. 2 is a sectional view taken along the line I-I of FIG.

Referring to FIG. 2, the PDP 100 according to the present embodiment includes a front substrate 110, a back substrate 120, a dielectric layer 122, a partition 124, a phosphor layer 126, and a scan electrode ( 128 and an address electrode 130, and have almost the same structure as a general PDP except for the arrangement of the scan electrode 128 and the address electrode 130. Referring to FIG.

Therefore, the structures of the scan electrode 128 and the address electrode 130 will be described in more detail.

As already described, one of the main features of the PDP 100 according to the present embodiment is that the scan electrode 128 and the address electrode 130 are disposed inside the partition wall 124.

In a typical three-electrode surface discharge type PDP, a scan electrode and a sustain electrode are disposed on the front substrate 110, and an address electrode is disposed between the rear substrate 120 and the dielectric layer 122.

Also, in the case of a general AC discharge type PDP, a scan electrode is disposed on the front substrate 110, and an address electrode is disposed between the rear substrate 120 and the dielectric layer 122.

In general, an electrode disposed on the front substrate 110 uses a transparent electrode such as indium tin oxide (ITO) so as not to block visible light passing through the front substrate 110.

Therefore, when the electrode is formed on the front substrate 110, a dielectric layer and a protective layer (eg, MgO layer) covering at least the transparent electrode should be formed on the front substrate 110.

However, since the transparent electrode, the dielectric layer, and the protective layer are formed in the respective layers on the front substrate 110, the transparent electrode, the dielectric layer, and the protective layer are formed to increase the thickness of the visible light and thus decrease the luminance of the PDP.

However, since the PDP 100 according to the present embodiment has an electrode structure in which the scan electrode 128 and the address electrode 130 are included in the partition wall 124, the transparent electrode, the dielectric layer, and the protective layer forming the permeable film on the front substrate are provided. The layer can be removed to improve the transmittance of visible light.

Therefore, the discharge structure of the PDP 100 of this embodiment is similar to that of the general AC PDP.

That is, the PDP 100 generates a potential difference between the scan electrode 128 and the address electrode 130 to ionize the discharge gas in the discharge cell C, and generates wall charge on the surface of the partition wall 124.

The PDP 100 generates sustain discharge while inverting the polarity of the scan electrode 128 and the address electrode 130.

Therefore, the PDP 100 has a sidewall discharge type discharge structure that forms a discharge path on the surface of the partition wall 124.

Both arrows shown on the surface of the partition 124 of FIG. 2 schematically show the discharge path of this side wall discharge type.

However, the discharge path in the discharge cell C can be formed between the scan electrode 128 and the address electrode 130 which are disposed to face each other as well as the path represented by the double-ended arrows.

As such, in the PDP 100 according to the present exemplary embodiment, the scan electrodes 128 and the address electrodes 130 are disposed on both sidewalls of the discharge cells C, respectively, to generate plasma discharges on both sidewalls of the discharge cells C, respectively. It has a sidewall discharge structure.

Therefore, the PDP 100 of this embodiment has the effect of improving the discharge efficiency of each discharge cell C, and further improving the luminous efficiency of the PDP 100.

However, attention should be paid to the arrangement of the address electrodes 130 that contribute to the plasma discharge of each discharge cell C. FIG.

Although not explicitly mentioned in the above description, the address electrode 130 contributing to the plasma discharge in the discharge cell C of FIG. 2 is disposed inside the partition wall 124 located on the left side of the discharge cell C. It is a sub electrode located in the right side among the two address electrodes 130. FIG. Moreover, it is a sub electrode located in the left side among the two address electrodes 130 arrange | positioned inside the partition 124 located in the right side of the discharge cell C. As shown in FIG.

Meanwhile, other sub-electrodes among the address electrodes 130 that do not contribute to the plasma discharge of the discharge cell C contribute to the plasma discharge of the adjacent discharge cells C, respectively.

Although not shown in FIGS. 1 and 2, the address electrode 130 has a linear structure extending along the depth direction (ie, the X direction) of FIG. 2.

2 illustrates a cross section of the branch electrode of the scan electrode 128. That is, the electrodes contributing to the plasma discharge in the discharge cells C are mainly the address electrodes 130 and the branch electrodes of the scan electrodes 128.

Therefore, as shown in FIG. 2, the branch electrode of the scan electrode 128 is disposed inside the Y partition wall corresponding to the discharge cell C, so that the plasma discharge can be generated in all the X directions of the Y partition wall. Preferred (see FIG. 4).

In addition, the two Y partition walls which partition each discharge cell C have the cross-sectional structure shown in FIG.

3 is a cross-sectional view taken along line II-II of FIG. 1.

Referring to FIG. 3, the PDP 100 according to the present embodiment is configured such that two discharge cells C form one subpixel. Typically, one pixel is composed of a set of subpixels capable of emitting visible light of red (R), green (G), and blue (B).

In the general PDP, each sub-pixel consists of one discharge cell (C). Therefore, phosphor layers for emitting visible light of different colors are formed in each of the discharge cells C disposed adjacent to each other in the general PDP.

However, in the PDP 100 according to the present embodiment, phosphor layers 126 for generating visible light of the same color are formed in two discharge cells C corresponding to each subpixel. That is, the phosphor layer 126 formed on the lower surfaces of the two discharge cells C shown in FIG. 3 absorbs ultraviolet rays to generate visible light of the same color.

The scan electrode 128 is formed in the partition 124 which is located in the middle of the partitions 124 shown in FIG. 3. The cross section of the scan electrode 128 shown shows the cross section of the line portion.

The scan electrode 128 is formed to extend in the depth direction (ie, Y direction) of FIG. 3 within the partition wall 124 positioned between the two discharge cells C constituting the subpixel.

That is, the scan electrode 128 is positioned at the center of the three Y partition walls 124 partitioning the two discharge cells C so that the two discharge cells C constituting one sub-pixel correspond to each other. Is formed in the Y partition 124.

Accordingly, a plurality of subpixels arranged in the Y direction correspond to one scan electrode 128, and two discharge cells C correspond to each of the subpixels with the line portion of the scan electrode 128 interposed therebetween. Of course, the position of the light emitting subpixel is controlled by the address electrode 130.

On the other hand, the three X partition walls which comprise each discharge cell C have the cross-sectional structure shown in FIG.

4 is a plan view taken along line III-III of FIG. 1, and FIG. 5 is a schematic diagram illustrating an electrode structure of a plasma display panel according to a first embodiment of the present invention.

In FIG. 4, the electrode shape of the PDP 100 and the relationship between the discharge cells C and the electrodes are more clearly illustrated.

Here, the scan electrode 128 is buried under the address electrode 130 in the partition wall 124. Therefore, the shape of the scan electrode 128 is indicated by the dotted line. The unhatched rectangular area represents the discharge cell C, and the thick line L in the figure is a display line indicated for specifying each subpixel, and the rectangular area surrounded by the thick line L is 1. Subpixels.

FIG. 5 is a diagram illustrating only the address electrode 130 and the scan electrode 128 in FIG. 4.

First, referring to FIG. 5, the electrode shape illustrated in FIG. 5 includes three pairs of address electrodes 130A, 130B, and 130C and one scan electrode 128.

Hereinafter, two address electrodes 130a, 130b, and 130c will be described as one "set", respectively. This is because one set of address electrodes 130a, 130b, 130c corresponds to one discharge cell C. FIG. Therefore, the set of address electrodes 130a, 130b, and 130c should be configured such that a voltage is applied to interlock with each other.

The scan electrodes 128 extend in the Y direction and are arranged in parallel in the X direction.

That is, the PDP 100 has an electrode structure in which an address electrode 130 extending in the X direction and a scan electrode 128 extending in the Y direction cross each other. In addition, the branch part in which the scan electrode 128 extends in the X direction is called a branch electrode.

Hereinafter, the X-Y cross-sectional structure of the PDP 100 will be described in more detail with reference to FIG. 4.

The address electrode 130 has a linear structure extending in the X direction. The address electrode 130 according to the present exemplary embodiment includes a pair of sub electrodes disposed on both sides of the discharge cell C. Referring to FIG.

For example, the subpixels positioned in the center of FIG. 4 are composed of two discharge cells C arranged side by side in the X direction.

The address electrodes 130 (sub-electrodes) are formed on both side partition walls 124 in the Y direction with respect to each discharge cell C, more precisely inside the partition walls 124.

On the other hand, the plurality of discharge cells C arranged in the X direction correspond to a pair of common address electrodes 130.

The scan electrode 128 includes a line portion extending in the Y direction and a branch portion extending in the X direction from the line portion.

The branch portion (that is, the branch electrode) is formed under the address electrode 130 and has a length exactly equal to the width of the Y partition wall of the discharge cell C. FIG. The branch portions extend from the line portion to both sides in the X direction.

That is, the scan electrode 128 is spaced apart from the address electrode 130 in the depth direction (Z direction) and has an electrode structure extending in the Y direction.

In addition, two discharge cells C are disposed in the X direction of the scan electrode 128 forming the H shape in the sub-pixel located in the center of FIG. 4. Such a structure is one of the features of this embodiment.

First, attention is paid to the Y partition wall positioned on the left side of the discharge cell C positioned upward along the X direction in the sub-pixel. Inside the Y partition wall, the branch portion of the scan electrode 128 and the address electrode 130 are located. It is formed spaced apart in this depth direction (Z direction not shown).

Accordingly, the PDP 100 generates a potential difference between the branch of the scan electrode 128 embedded in the Y partition wall and the address electrode 130, and ionizes the discharge gas in the discharge cell C to discharge near the Y partition wall surface. Form a path.

As a result, the PDP 100 can generate plasma discharge in the discharge cell C by the branch of the scan electrode 128 and the address electrode 130.

Similarly, the PDP 100 is plasma-discharged in the discharge cell C by the branch portion of the scan electrode 128 and the address electrode 130 formed inside the Y partition wall located on the right side of the discharge cell C. Generates.

On the other hand, if attention is paid to the discharge cells C positioned below the subpixels, it can be seen that the same discharge structure is formed by electrodes common to the discharge cells C positioned upwards.

Therefore, the PDP 100 includes the branch portions of the scan electrodes 128 formed in the Y partition walls positioned at both sides in the Y direction of the discharge cells C, and the discharge cells simultaneously with the upper discharge cells by the address electrodes 130. Plasma discharge is generated in C).

That is, the scan electrode 128 and the address electrode 130 have a structure capable of simultaneously plasma-discharging two discharge cells C constituting the subpixel.

Hereinafter, the operation and effect of the plasma display panel according to the present embodiment, which is characterized by the above-described electrode structure, will be described.

The PDP 100 according to the present exemplary embodiment may simultaneously plasma discharge a plurality of discharge cells C by at least the scan electrode 128 and the set of address electrodes 130. That is, one sub pixel includes a plurality of discharge cells C, and these discharge cells C can emit light at the same time.

The general PDP consists of one discharge cell C for each subpixel. However, using the electrode structure of the present embodiment, the PDP 100 can arrange a plurality of discharge cells C having a smaller opening diameter for each subpixel than the discharge cells C included in the general PDP.

In general, the smaller the opening diameter of the discharge cell C, the higher the luminous efficiency due to the plasma discharge. That is, as the opening diameter D of the discharge cell C and the product of the internal pressure P become smaller, the generated plasma is concentrated near the center of the discharge cell C, and ionized ions are separated from each other. Alternatively, the luminous efficiency is increased by increasing the cross-sectional area (scattering cross-sectional area) between the ionized ions and the electrons. This phenomenon is generally referred to as focusing of plasma.

It is also known empirically that plasma focusing occurs when the product of the opening diameter D; cm and the pressure P; Torr is about 2 or less.

As described above, in the PDP, forming a discharge cell having a small opening diameter improves the light emission efficiency.

However, if the opening diameter is made small, the opening area for emitting visible light generated inside the discharge cell to the outside decreases, so that the luminance can be lowered.

Therefore, the PDP 100 according to the present embodiment has an electrode structure capable of providing a plurality of minute discharge cells C, and exhibits high light emission efficiency for each discharge cell C, while opening area for each subpixel. This is to have a discharge cell structure that can sufficiently hold.

Hereinafter, modifications according to the first embodiment of the present invention will be described with reference to the accompanying drawings. However, the same reference numerals are used for the same parts as those of the first embodiment, and repeated description thereof will be omitted.

FIG. 6 is a plan view of the plasma display panel cut along the line III-III of FIG. 1 according to the first modification of the first embodiment.

Referring to FIG. 6, the first characteristic of the PDP 100 according to the first modification is that the discharge cell C ′ is formed in an elliptical shape.

The discharge cells C of the first embodiment shown in Figs. 1 to 4 illustrate that the shape of the X-Y cross section is a cube or a cube having a rectangular shape.

However, the shape of the discharge cell C according to the first modification is not limited thereto. For example, as shown in the discharge cell C 'shown in Fig. 6, the X-Y section has an elliptic elliptic cylinder structure.

In addition, the discharge cells (C or C ') may be made of cones, elliptical awls, triangular pyramids, or polygonal pyramids having a polygonal bottom surface. It can be transformed into various shapes such as semicircle shape or trapezoid shape.

Here, even when expressed as a circle, it is not necessarily a circle but also an ellipse, and even when expressed as a polygon, all polygons having arbitrary angles may be included.

On the other hand, the PDP 100 shown in Figs. 4 and 6 is composed of a plurality of discharge cells (C and C ') having the same size.

However, the PDP 100 according to the first modified example may include a plurality of discharge cells C and C 'having different sizes or may include discharge cells C and C' of different shapes.

For example, in the PDP 100, two kinds of large and small columnar discharge cells C ′ may be formed between the branch portions of the scan electrode 128.

By employing the above-described discharge cell structure, it is possible to place more discharge cells (C ') than simply arranged columnar discharge cells (C') of the same size. Therefore, a larger opening area can be secured, and a high brightness PDP 100 can be realized.

In addition, a second characteristic of the PDP 100 according to the first modification is to increase the number of discharge cells C ′ disposed in the subpixel.

In the subpixel positioned in the center of FIG. 6, two discharge cells C ′ are disposed in the X direction about the line portion of the scan electrode 128. In addition, common scan electrodes 128 (branches) and address electrodes 130 are disposed on the Y partition walls corresponding to these discharge cells C '.

Therefore, the discharge cells C 'can generate plasma discharge simultaneously by the scan electrode 128 and the set of address electrodes 130, similarly to the discharge cells C shown in FIG.

That is, the PDP 100 of the first modification shown in FIG. 6 doubles the number of discharge cells C 'from the configuration of the PDP 100 of the first embodiment shown in FIG.

However, in the first modification, it is natural that the micro discharge cells C 'that are twice as large as the PDP 100 shown in Fig. 4 can be included in each subpixel.

Therefore, the maximum number of discharge cells C 'included in each sub-pixel of the PDP 100 should be determined by the actual embodiment in accordance with the limitations of the microfabrication technique at the time of implementation.

Moreover, by making the X-Y cross-sectional shape of each discharge cell C 'the most densely arrangeable, the total opening area can be increased for each subpixel.

The electrode structure of the PDP 100 according to the first modification described above is further described below.

In the structure of the PDP 100 of the first embodiment having the cubic discharge cells C in FIG. 4, a linear structure in which the scan electrode 128 and the address electrode 130 extend linearly is preferable. However, the electrode structure of the PDP 100 according to the first modification need not necessarily be limited to the linear structure.

For example, when employing an elliptical discharge cell C ′ as shown in FIG. 6, the PDP 100 may be formed on the address electrode 130 and the address electrode 130 that are curved along the sidewalls of the elliptic cylinder. It may be configured as a scan electrode 128 including a corresponding branch portion.

In addition, the PDP 100 may correspond to two sub-pixels, and may be configured to apply a voltage so that four address electrodes 130 adjacent to each other in the Y direction are interlocked.

Of course, in the configuration of the PDP 100 according to the first modification, the width (the width in the Y direction) of the subpixels may increase in a double.

However, if the width of the discharge cell C 'is reduced in half and the length of the line portion of the scan electrode 128 is adjusted in half, the size of the subpixel can be maintained.

By such a deformation, it is possible to form a subpixel including more micro discharge cells C '.

Therefore, the PDP 100 of the first modification may include all of the above modifications.

Hereinafter, a plasma display panel according to a second modification of the first embodiment of the present invention will be described with reference to the accompanying drawings.

 However, repeated description of the same components as the first modification will be omitted and only the main features will be described in detail.

FIG. 7 is a plan view of the plasma display panel according to the second modification of the first embodiment, taken along the line III-III of FIG. 1.

Referring to FIG. 7, the electrode structure of the PDP 100 according to the second modification is a modification of the address electrode 130 among the electrode structures of the first modification described above.

The address electrode 130 further includes a bridged electrode connecting the pair of sub-electrodes installed in the Y partition walls on both sides of the discharge cell C ′ in the Y direction.

Therefore, the electrode structure of the second modification is composed of a combination of a ladder-shaped address electrode 130 and a scan electrode 128 intersecting the address electrode.

Therefore, the configuration of the PDP 100 according to the second modification is a plurality of discharges in the vicinity of the region where the scan electrode 128 and the address electrode 130 are three-dimensionally overlapped (intersected at intervals in the Z direction). The cell C 'needs to be arranged and configured to be capable of emitting light at the same time.

On the other hand, any number of crosslinked electrodes may be formed. For example, as in the electrode structure shown in FIG. 7, it may be arranged to face the line portion of the scan electrode 128 with at least one discharge cell C 'interposed therebetween.

In this case, an opposite discharge occurs between the crosslinked electrode and the line portion of the scan electrode 128 opposite thereto, so that the discharge voltage in the discharge cell C 'can be lowered.

As another variation, the crosslinked electrode may be isolated and disposed directly above the line portion of the scan electrode 128.

In this case, the discharge cells C ′ may be induced with plasma discharge at three sidewalls including surface discharges by the crosslinked electrode and the scan electrode 128, thereby further improving light emission efficiency.

Hereinafter, a plasma display panel according to a third modification of the first embodiment of the present invention will be described with reference to the accompanying drawings.

However, repetitive description of the same components as in the first modification will be omitted, and only the main features will be described in detail.

FIG. 8 is a plan view of the plasma display panel according to the third modified example of the first embodiment, taken along line III-III of FIG. 1.

Referring to FIG. 8, the electrode structure of the PDP 100 according to the third modification is a modification of the address electrode 130 among the electrode structures of the second embodiment.

For example, as shown in FIG. 8, it includes the bridge | crosslinking electrode which connects a pair of address electrode 130 (sub electrode) provided in the Y partition wall on both sides of discharge cell C '.

That is, the electrode structure of the third modification is composed of a combination of a ladder-shaped address electrode 130 and a scan electrode 128 intersecting the address electrode.

As described above, the electrode structure of the third modified example is very similar to the electrode structure of the third embodiment shown in Fig. 7, but since the positions of the crosslinked electrodes are different, the functions of the crosslinked electrodes are also different.

That is, in the electrode structure according to the third modification shown in FIG. 7, the crosslinked electrode is disposed to face the line portion of the scan electrode 128 with at least one discharge cell C ′ interposed therebetween. In this case, the crosslinked electrode performs a counter discharge between the line portions of the opposing scan electrodes 128 so as to lower the discharge voltage in the discharge cell C '.

However, the crosslinked electrode shown in Fig. 8 passes just above the line portion of the scan electrode.

Since it is formed, surface discharge is generated between the line portion of the scan electrode 128.

Therefore, in the discharge cell C 'adjacent to the bridged electrode, a discharge path is formed in the vicinity of at least three sidewalls, thereby inducing plasma discharge. As a result, higher discharge efficiency can be obtained.

Hereinafter, a plasma display panel according to a fourth modification of the first embodiment of the present invention will be described with reference to the accompanying drawings.

However, repeated descriptions of the same components as those of the first embodiment shown in FIG. 2 will be omitted and only the main features will be described in detail.

FIG. 9 is a plan view Z-Y cut along the line I-I of FIG. 1 according to a fourth modified example of the first embodiment; FIG.

Referring to FIG. 9, the configuration of the PDP 100 according to the present embodiment is to add the floating electrode 132 to the configuration of the PDP 100 of the first embodiment shown in FIG. 2. Therefore, except for the floating electrode 132, the configuration is the same as that of the PDP 100 of the first embodiment shown in FIG.

The floating electrode 132 is formed on the back substrate 120, and the dielectric layer 122 is covered thereon so that the floating electrode 132 is not directly exposed to the lower portion of the discharge cell C.

The floating electrode 132 forms a discharge path between the scan electrode 128 or the address electrode 130, thereby lowering the discharge voltage in the discharge cell C.

Hereinafter, a plasma display panel according to a fifth modification of the first embodiment of the present invention will be described with reference to the accompanying drawings. However, repeated descriptions of the same components as those of the first embodiment shown in FIG. 2 will be omitted and only the main features will be described in detail.

FIG. 10 is a Z-Y plan view of the plasma display panel cut along the line I-I of FIG. 1 according to the fifth modification of the first embodiment.

Referring to FIG. 10, the configuration of the PDP 100 according to the fifth modification is to add the phosphor layer 134 on the front substrate 110 of the PDP 100 shown in FIG. 2. Therefore, except for the phosphor layer 134, the structure is the same as that of the PDP 100 of the first embodiment shown in FIG.

The phosphor layer 134 absorbs ultraviolet rays that are to pass through the front substrate 110 among the ultraviolet rays generated in the discharge cells C by plasma discharge, and emits visible light.

Visible light emitted in the direction of the front substrate 110 passes through the front substrate 110 as it is.

On the other hand, visible light emitted in the direction of the back substrate 120 is reflected in the direction of the front substrate 110 by the phosphor layer 126 or the partition wall 124 formed on the dielectric layer 122. As a result, when the phosphor layer 134 is not added, the luminance of the PDP 100 can be further improved.

The overall configuration, electrode structure, and electrode shape of the PDP 100 according to the first embodiment of the present invention have been described above. And the operation and effect according to the first embodiment, and the respective modifications were also described.

As such, when the electrode structure according to the present embodiment is adopted, the PDP 100 can improve the luminous efficiency of each discharge cell C without reducing the total opening area of the corresponding discharge cell C for each subpixel. have. Therefore, compared with the general three-electrode surface discharge type PDP, plasma emission with higher luminance is possible.

Hereinafter, a plasma display panel according to a second embodiment of the present invention will be described with reference to the accompanying drawings. Here, the repeated description of the substantially same components as the first embodiment will be omitted, and only the main features described above will be described in detail.

The PDP 200 according to the second embodiment is also characterized by generating a plasma discharge simultaneously to a plurality of discharge cells by a pair of electrodes.

The PDP 100 of the first embodiment has a structure corresponding to an address electrode 130 having two sub-electrodes in one discharge cell and a scan electrode 128 having two branch electrodes. .

However, unlike the first embodiment, the PDP 200 according to the second embodiment has a structure in which one discharge cell corresponds to a pair of address electrodes and scan electrodes.

11 is a perspective view showing the entire structure of a plasma display panel according to a second embodiment of the present invention.

The PDP 200 shown in FIG. 11 is a diagram schematically illustrating the features of this embodiment. Unless the width, height, thickness, or depth of each component is clearly defined, it is a design matter that can be appropriately changed according to the actual embodiment. Therefore, if the configuration possessing the technical features of the present embodiment described below, it can be interpreted to belong to the technical scope of the present embodiment, the same hatched parts in the drawings are considered to be the same component.

The PDP 200 according to the present embodiment basically has a front substrate 210, a rear substrate 220, a dielectric layer 222, a partition 224, a phosphor layer 226, a scan electrode 228, and an address electrode 230. ). The space partitioned by the partition 224 is defined as a discharge cell (C).

Here, the configuration and structure of the front substrate 210, the back substrate 220, the dielectric layer 222, the partition 224 and the phosphor layer 226, the front substrate 110, the back substrate according to the first embodiment Since 120, the dielectric layer 122, the partition wall 124, and the phosphor layer 126 are substantially the same, detailed description thereof will be omitted.

Therefore, the scan electrode 228 and the address electrode 230 will be described in more detail.

The function of the scan electrode 228 is the same as that of the scan electrode 128 according to the first embodiment. However, the shape and arrangement of the scan electrode 228 are greatly different from the scan electrode 128 of the first embodiment.

Therefore, the shape and arrangement of the scan electrode 228 of this embodiment will be described with reference to FIG.

The scan electrode 228 according to the present embodiment, like the scan electrode 128 of the first embodiment, includes a line portion extending in the Y direction and a branch portion extending in the X direction from the line portion.

Referring to the ZX cross-sectional structure of the Y partition wall located at the rightmost side among the Y partition walls of the PDP 200 shown in FIG. to be.

The cross section of the scan electrode 228 is a cross section of the branch, and the branch has a length twice the width of the discharge cell C in the X direction.

The address electrode 230 according to the present embodiment is the same as the address electrode 130 of the first embodiment. However, the shape and arrangement of the address electrode 230 of the present embodiment are greatly different from the address electrode 230 according to the first embodiment.

Therefore, the shape and arrangement of the address electrode 130 of the present embodiment will be described with reference to FIG.

 The address electrode 230 of this embodiment has a linear structure extending in the X direction, similarly to the address electrode 130 according to the first embodiment.

However, in contrast to the structure in which the address electrodes 130 according to the first embodiment are all disposed in both side Y partition walls of the discharge cells, the address electrode 230 according to the present embodiment has the discharge cells in one side of the Y partition walls on both sides. It has a structure arranged only in the partition.

Referring to the Z-Y section of the PDP 200 illustrated in FIG. 11, the Y partition walls where the address electrodes 230 are disposed and the Y partition walls where the address electrodes 230 are not disposed are alternately arranged along the Y direction.

The address electrode 130 according to the first embodiment includes a pair of sub-electrodes disposed in the Y partition walls corresponding to both sides of each discharge cell C, and a pair of sub-electrodes are provided in each Y partition wall. It is arranged in parallel.

However, the Y partition walls of the present embodiment (except for the junction portion with the X partition wall) may have one address electrode 230 disposed therein or no address electrode 230 may be disposed.

Hereinafter, the structure of the scan electrode 228 and the address electrode 230 of the PDP 200 according to the present embodiment will be described in detail with reference to FIGS. 12 to 14.

FIG. 12 is a cross-sectional view taken along line II of FIG. 11, and is a cross-sectional view taken along line II-II of FIG. 11, and FIG. 13 is a cross-sectional view taken along line II-II of FIG. 11, and FIG. 14 is taken along line III-III of FIG. 11. XY plan view.

Referring to FIG. 12, the discharge cells C of the PDP 200 may include the front substrate 210, the dielectric layer 222 and the phosphor layer 226 formed on the back substrate 220, and three partition walls. And is partitioned by 224.

Here, the PDP 200 has an electrode structure in which the scan electrode 228 and the address electrode 230 are formed only inside the partition wall 224 located at the center of the three partition walls 224.

The scan electrode 228 and the address electrode 230 generate plasma discharge in two discharge cells C disposed on both sides with the partition wall 224 formed therebetween.

On the other hand, the sub-pixel of the PDP 200 is composed of two discharge cells C on both sides of the partition wall 224 located at the center. A cross section of the scan electrode 228 shown in FIG. 12 shows a cross section of a branch of the scan electrode 228.

FIG. 13 is a cross-sectional view taken along line II-II of FIG. 11.

Referring to FIG. 13, the discharge cells C of the PDP 200 may include the front substrate 210, the dielectric layer 222 and the phosphor layer 226 formed on the back substrate 220, and three partition walls. It is partitioned by 224.

In addition, the PDP 200 has a structure in which the scan electrode 228 is disposed only inside the central partition 224 among the three partitions 224. The cross section of the scan electrode 228 shown in FIG. 13 is a cross section of the line portion of the scan electrode 228.

FIG. 14 is a plan view taken along line III-III of FIG. 11.

In FIG. 14, the electrode shape of the PDP 200 and the relationship between the discharge cells C and each electrode are more clearly shown.

The scan electrode 228 is embedded directly under the address electrode 230 and the partition wall 224. Therefore, the shape of the scan electrode 228 is indicated by the dotted line. The unhatched rectangular area represents the discharge cell C. The thick line L in the figure is a display line for specifying each sub-pixel, and the rectangular area surrounded by the thick line L is one. Represents a subpixel

Referring to FIG. 14, the shape of the address electrode 230 has a linear structure extending in the X direction.

In addition, the subpixel surrounded by the thick line L in the center of FIG. 14 includes four discharge cells C disposed on both sides of the address electrode 230.

Thus, unlike the first embodiment, each sub-pixel corresponds to one address electrode 230, and it is not necessary to apply a voltage so that two or more address electrodes 230 adjacent in the Y direction necessarily interlock with each other. .

The address electrode 230 is formed to be spaced apart from the upper side of the scan electrode 228 (not shown) in the dotted line.

The shape of the scan electrode 228 includes a line portion in which the scan electrode 228 extends in the Y direction, and a branch portion extending from the line portion to both sides in the X direction.

The branch portion (branch electrode) is formed under the address electrode 230, and has a length exactly equal to the width of the Y partition wall of the discharge cell C.

That is, the scan electrode 228 is spatially separated from the address electrode 230, and is formed to extend in the Y direction crossing the address electrode.

The difference from the address electrode 230 in the first embodiment is that the number of Y discharge cells C formed between the pair of branch electrodes is increased from one to two.

In other words, the address electrode 230 is formed in the Y partition walls sequentially arranged with one in between among the plurality of Y partition walls arranged in the Y direction.

As a result, in each discharge cell C, the address electrode 230 and the scanning electrode 228 are arrange | positioned only in one Y partition among two Y partitions which comprise a side wall, and discharge only in the surface vicinity of one Y partition. The plasma discharge in which the path is formed is induced.

However, even in the above case, the product of the internal pressure P and the opening diameter D is less than the predetermined boundary value (approximately 2), thereby causing focusing of the plasma.

Therefore, the PDP 200 can achieve high discharge efficiency for each discharge cell C by arranging minute discharge cells C in close proximity to the address electrode 230 and the branch electrode. The total opening area of the discharge cell C can be secured.

The difference between the electrode structure of the PDP 200 according to the second embodiment of the present invention and the electrode structure shown in the first embodiment has been described above.

Structural features of the PDP 200 according to the present exemplary embodiment include an electrode structure in which branch portions (branch electrodes) of the scan electrode 228 are three-dimensionally spaced apart and superimposed on one address electrode 230. It is a discharge cell structure in which a plurality of discharge cells C are formed near both sides.

Hereinafter, with reference to the accompanying drawings a modification according to a second embodiment of the present invention having the above structural features will be described.

FIG. 15 is a plan view taken along line III-III of FIG. 11, illustrating a plasma display panel according to a modification of the second embodiment.

Referring to FIG. 15, the PDP 200 according to the present modification includes one address electrode 230 extending in the X direction and a lower layer (the layer located in the depth direction of FIG. 15) of the address electrode 230. And a scan electrode 228 (dotted line in the drawing) having branch electrodes formed in the Y partition wall 224.

In the PDP 200, a plurality of discharge cells C ′ are formed at both sides with the address electrode 230 interposed therebetween.

The difference from the PDP 200 of the second embodiment shown in FIG. 14 is that the shape of the discharge cell C 'is changed from a rectangular parallelepiped shape to a circumferential shape (first characteristic). The number of ') is doubled (second feature).

The above-mentioned first and second features of the present modification are the same as those of the first and second features of the first modification of the first embodiment, and the effects thereof are substantially the same, and thus, repeated description is omitted.

As already described, the first feature is that it is possible to form more discharge cells C 'in the subpixel of 1, and to change to more various cross-sectional shapes.

Therefore, the PDP 200 preferably has a shape of the discharge cell C 'which can be positioned as close as possible to the address electrode 230 and the branch electrode.

On the other hand, the second feature is that even if more discharge cells C 'are arranged in one sub-pixel, using a pair of discharge electrodes (branch electrodes of the address electrode 230 and the scan electrode 228) at the same time, Plasma discharge is possible.

That is, the number of discharge cells C 'that can be formed in the PDP 200 shown in FIG. 15 is not limited. That is, when the discharge cells C 'are provided in close proximity to one side or both sides of the pair of discharge electrodes, it is possible to simultaneously generate plasma discharge to all the discharge cells C'.

The PDP 200 according to the second embodiment of the present invention has been described above.

As described above, when the electrode structure and the discharge cell structure according to the present embodiment are applied, the plurality of minute discharge cells C ′ formed in each sub-pixel are formed by the above-described modifications and other various modifications. It is possible to generate plasma discharge at approximately the same time, and to realize the PDP 200 having high luminous efficiency.

Hereinafter, the manufacturing method of the PDP 100 and the PDP 200 will be described as follows.

Here, the method of forming the electrode structure according to the embodiment of the present invention will be mainly described. The other components may be produced according to a method substantially the same as a general PDP production method or a production method developed in the future.

First, a dielectric layer for forming barrier ribs is formed on the rear substrate, and a scan electrode is formed on the dielectric substrate. The scan electrode is extremely long in length and intersects with the address electrode formed through the post process, and at the same time, the overlapped area is as small as possible, and is patterned using photolithography.

For example, the scan electrodes may be formed in a ladder shape. In this case, finally, the discharge cells are arranged in the form of grape clusters surrounding the electrodes.

Then, a dielectric layer is formed between the electrodes so as to form a discharge gap. An address electrode is formed thereon.

Such a formation method is patterned using the same method as the scan electrode, using a photosensitive Ag paste.

At this time, the address electrodes are arranged to intersect with the scan electrodes in three dimensions, and one pixel is selected by selecting either one of the scan electrodes and the address electrodes.

Thereafter, discharge cells are formed at desired positions. The formation method can use the sandblasting method, for example. That is, a dry film resist (DFR) is patterned on a portion where a desired discharge cell is formed, and a groove or a hole is formed by removing the dielectric layer of the discharge cell portion by sandblasting. At this time, a scan electrode and an address electrode should be formed on the inner wall of the hole and covered with a dielectric layer of appropriate thickness.

In order to embody a PDP according to an embodiment of the present invention, it is necessary to pattern the DFR so that a plurality of discharge cells can be formed surrounding a pair of discharge electrodes, like a cluster of grapes.

After forming a plurality of discharge cells, an MgO film is formed on the surface portion of each discharge cell by using the EB deposition method. For example, the MgO film may be formed to a thickness of about 700 nm. Through this process, the discharge structure is completed on the back substrate.

On the other hand, in order to increase the brightness, phosphor layers of the same color may be formed inside a plurality of discharge cells forming one pixel. In addition, the front substrate may form the phosphor layers respectively determined in the surface region corresponding to each pixel. It is also preferable to form a black matrix (BM) as the partition of each pixel.

What is important here is to form a phosphor layer of the same color as the plurality of discharge cells constituting each pixel on the back substrate on the front substrate so that the emission of each discharge cell can be observed through the phosphor layer.

The phosphor layer formed on the front substrate is preferably formed with a thickness of about 20 μm at the maximum. Of course, the thickness of the phosphor layer may be appropriately set according to the material of the phosphor, which is a design matter according to the embodiment.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications or changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. In addition, it is natural that it belongs to the scope of the present invention.

For example, in the description of the above embodiment, the first electrode is described as the address electrode and the second electrode as the scan electrode, but the present invention is not necessarily limited thereto, and the second electrode is the address electrode and the first electrode is the scan electrode. It is also possible to configure as.

In addition to the first electrode and the second electrode, a third electrode having the same shape as the first electrode may be included. For example, in the first embodiment, a three-electrode structure in which a third electrode having the same shape as the scan electrode 128 is disposed directly on the address electrode 130 may be formed.

In this case, a discharge structure including the address discharge generated by the address electrode 130 and the sustain discharge generated by the scan electrode 128 and the third electrode is formed.

Similarly, in the second embodiment, a three-electrode structure in which a third electrode having the same shape as that of the scan electrode 228 is disposed directly above the address electrode 230 may be formed.

In this case, a discharge structure including the address discharge generated by the address electrode 230, the sustain discharge generated by the scan electrode 228, and the third electrode can be achieved.

As described above, in the plasma display panel according to the present invention, the branch electrodes and the second electrodes enable the plurality of minute discharge cells constituting the subpixels to emit light at substantially the same time, and the plasma discharge generated in each discharge cell. Not only improves the light emission efficiency but also ensures sufficient opening area of the discharge cells, thereby achieving high luminance plasma light emission.

Claims (7)

A front substrate and a rear substrate disposed to face each other; And A partition wall partitioning a plurality of discharge cells between the front substrate and the rear substrate; The partition wall, A first partition wall formed along a first direction; And A second partition wall formed along a second direction crossing the first direction, A first electrode formed inside the second partition wall; A second electrode formed in the first partition wall so as to three-dimensionally intersect with the first electrode; And And a branch electrode disposed in the first partition wall and extending in both directions from the first electrode so as to overlap the at least one second electrode. The method of claim 1, The second electrode, And a pair of sub-electrodes positioned at both sides of the discharge cell. The method of claim 2, The second electrode, And a crosslinked electrode connecting the pair of sub-electrodes. The method of claim 3, The branch electrode, And a plasma display panel disposed directly above or directly below the second electrode. The method of claim 1, The discharge cell, A plasma display panel in which the cross section is circular or polygonal in shape. The method according to any one of claims 1 to 5, A third electrode having the same shape as the first electrode, And the third electrode is disposed such that the second electrode is positioned between the first electrode and generates a plasma discharge between the first electrode and the third electrode. The method according to any one of claims 1 to 5, A third electrode having the same shape as the second electrode, And the third electrode is disposed such that the first electrode is positioned between the second electrode and generates a plasma discharge between the second electrode and the third electrode.

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