KR100581958B1 - Plasma display panel - Google Patents

Abstract

According to the present invention, a first substrate and a second substrate are disposed to face each other, and the first substrate and the second substrate are disposed to face each other for a plasma display panel in which the luminance of blue light is improved and the reactive power is reduced to reduce the power consumption. Barrier ribs disposed between the first substrate and the second substrate to define discharge cells in which gas discharge occurs, and a plurality of first protrusions extending in one direction to correspond to the discharge cells and viewed from the first substrate; And a plurality of second discharge electrodes having a plurality of second discharge electrodes corresponding to the first discharge electrodes and disposed apart from the first discharge electrode and having a plurality of second protrusions when viewed from the first substrate. Discharge electrodes, a plurality of address electrodes disposed to intersect the first discharge electrodes and the second discharge electrodes, and the discharge cells A red light emitting diode, a green light emitting diode and a blue light emitting phosphor disposed in the discharge cells so as to be divided into a color light emitting discharge cell, a green light emitting discharge cell, and a blue light emitting discharge cell, and a discharge gas in the discharge cells; As viewed from the substrate, the area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cell among the discharge cells is the red light emitting discharge cell and the green light emission of the discharge cells. A plasma display panel is provided that is smaller than the area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the discharge cell.

Description

Plasma display panel {Plasma display panel}

1 is an exploded perspective view schematically showing a conventional plasma display panel.

FIG. 2 is a schematic cross-sectional view taken along the line II-II of FIG. 1.

3 is an exploded perspective view schematically showing another conventional plasma display panel.

4 is an exploded perspective view schematically illustrating a plasma display panel according to an exemplary embodiment of the present invention.

FIG. 5 is a perspective view schematically illustrating an arrangement structure of electrodes of the plasma display panel illustrated in FIG. 4.

FIG. 6 is a plan view schematically illustrating an arrangement structure of electrodes and a partition of the plasma display panel illustrated in FIG. 4.

FIG. 7 is a schematic cross-sectional view taken along the line VII-VII of FIG. 4. FIG.

FIG. 8 is a plan view schematically illustrating a modification of the arrangement of the electrodes and the partition walls of the plasma display panel illustrated in FIG. 6.

FIG. 9 is a plan view schematically illustrating another modified example of an arrangement of the electrodes and the partition walls of the plasma display panel illustrated in FIG. 6.

FIG. 10 is a plan view schematically illustrating another modified example of an arrangement of electrodes and a partition of the plasma display panel illustrated in FIG. 6.

11 is a schematic cross-sectional view of a plasma display panel according to another exemplary embodiment of the present invention.

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

200: plasma display panel 211: first substrate

212: first discharge electrode 213: second discharge electrode

214: discharge electrode pair 215: first dielectric layer

216: protective film 222: address electrode

223: second dielectric layer 224: partition wall

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which the luminance of blue light is improved and power consumption is reduced by reducing reactive power consumption.

In general, a plasma display panel is a flat panel display panel that realizes a predetermined image by exciting phosphors by ultraviolet rays generated by gas discharge, and is a next-generation thin flat panel display panel that can be thinned and composed of a large screen with high resolution. Be in the spotlight. In order to increase the luminous efficiency of such a plasma display panel, the volume of the space in which the sustain discharge is generated to excite the discharge gas inside the panel must be large, the surface area of the phosphor must be large, and the visible light emitted from the phosphor Conditions such as low number of components must be satisfied.

1 illustrates an example of a conventional plasma display panel, and FIG. 2 illustrates a cross section taken along line II-II of FIG. 1.

The plasma display panel 100 includes a first substrate 111 and a second substrate 121 that face each other. Discharge electrode pairs 114 are disposed on the surface 111a of the first substrate in the direction of the second substrate, and a first dielectric layer 115 covering the discharge electrode pairs and a protective layer covering the first dielectric layer 115. 116 is provided. The discharge electrode pair 114 includes an X electrode 112 and a Y electrode 113, and the X electrode 112 and the Y electrode 113 are transparent electrodes 112b and 113b and a bus electrode 112a, respectively. 113a).

On the surface 121a of the second substrate 121 opposite to the first substrate 111, address electrodes 122 disposed in parallel with each other are provided, and a second dielectric layer covering the address electrodes is disposed. 123, the partitions 124 formed on the second dielectric layer 123, and the phosphor formed on the side of the partition wall 124 and the surface of the second dielectric layer 123 in the direction of the first substrate 111. 125).

However, in the case of the conventional plasma display panel 100, since the transparent electrodes 112b and 113b of the discharge electrode pairs 114 causing the sustain discharge are generally high in resistance, the voltage due to such a high resistance is increased. In order to prevent the drop, bus electrodes 112a and 113a formed of a material having high conductivity must be further provided. Therefore, there is a problem that the manufacturing process is complicated and the manufacturing cost is increased.

In order to solve this problem, as shown in FIG. 3, a plasma display panel including discharge electrode pairs 114 having only a conventional bus electrode without a transparent electrode has been proposed. However, since the discharge electrode pairs 114 are not transparent, there is a problem that the emission efficiency of the light is lowered in the process of light emitted from the discharge cell to the outside.

In order to solve this problem, it is proposed that the discharge electrode pairs 114 have mesh-shaped protrusions, as shown in FIG. 3. However, since the red light and the green light generated in the red light emitting cells and the green light emitting cells are high in brightness, the brightness deterioration by the pair of discharge electrodes 114 is not a problem. The light has a low luminance, and there is a problem in that the luminance deterioration effect by the discharge electrode pair 114 as described above is large.

That is, in general, the luminance of the red and green light generated in the discharge cell is approximately 300 cd / m ² and 600 cd / m ^2, but the luminance of the blue light is approximately 100 cd / m ^2, so that the discharge electrode pairs 114 are formed. If the luminance decrease by 10 cd / m ² , the luminance of the red, green, and blue light emitted to the outside becomes 290 cd / m ² , 590 cd / m ^2, and 90 cd / m ² , respectively. Becomes 3.3%, 1.7% and 10%, respectively. Therefore, there is a problem in that the luminance deterioration rate of the blue light is very large, and thus an image cannot be properly implemented.

SUMMARY OF THE INVENTION The present invention has been made to solve various problems including the above problems, and an object of the present invention is to provide a plasma display panel in which the luminance of blue light is improved and the power consumption is reduced by reducing the reactive power consumption.

In order to achieve the above object and various other objects, the present invention provides a first substrate and a second substrate disposed to face each other, and disposed between the first substrate and the second substrate and the first substrate and A plurality of first discharge electrodes including a partition wall defining discharge cells in which gas discharge occurs along with the second substrate, and a plurality of first protrusions extending in one direction to correspond to the discharge cells and viewed from the first substrate; And a plurality of second discharge electrodes corresponding to the first discharge electrodes and spaced apart from the first discharge electrode and having a plurality of second protrusions when viewed from the first substrate, and the first discharge. A plurality of address electrodes disposed to intersect the electrodes and the second discharge electrodes, and the discharge cells are a red light emitting cell, a green light emitting cell, and a blue light emitting cell. A red light emission, a green light emission and a blue light emission phosphor disposed in the discharge cells, and a discharge gas in the discharge cells, the blue light emission of the discharge cells when viewed from the first substrate. The area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the cell may include the first protrusion of the first discharge electrode corresponding to the red light emitting cell and the green light emitting discharge cell among the discharge cells. And an area smaller than the area of the second protrusion of the second discharge electrode.

The present invention also provides a first substrate and a second substrate disposed to face each other, the first substrate and the second substrate and disposed between the first substrate and the second substrate in order to achieve the above object A barrier rib defining discharge cells in which gas discharge occurs, a phosphor including red light emitting phosphor, green light emitting phosphor and blue light emitting phosphor formed in the discharge cells, and a portion facing the visible light emitted from the phosphor; A discharge electrode which causes a gas discharge in discharge cells defined by the partition wall, the area of which encounters visible light emitted from the blue light-emitting phosphor is smaller than the area of encountering visible light emitted from any one of the other phosphors; It provides a plasma display panel comprising a.

According to another aspect of the present invention, the discharge electrodes may be provided with a first discharge electrode and a second discharge electrode which is spaced apart from each other and extending facing each other.

According to still another feature of the present invention, the first discharge electrode may have at least one first protrusion, and the second discharge electrode may have at least one second protrusion.

According to another feature of the invention, it may be further provided with address electrodes extending to intersect the discharge electrodes.

According to still another feature of the present invention, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the first discharge electrode include the first discharge electrode and the second discharge corresponding thereto. It may be provided so as to face the center between electrodes.

According to still another feature of the present invention, each of the first protrusions of the first discharge electrode and the second protrusions of the second discharge electrode may be a mesh protrusion.

According to another feature of the present invention, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the red light emitting discharge cell and the green light emitting discharge cell among the discharge cells are respectively meshed. And a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cells among the discharge cells, respectively, in the direction in which the first discharge electrode and the second discharge electrode extend. And a plurality of stripe patterns in parallel with each other and protrusions in the form of connecting the ends thereof.

According to another feature of the present invention, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the red light emitting discharge cell and the green light emitting discharge cell among the discharge cells are respectively meshed. And a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cells among the discharge cells, respectively, in the direction in which the first discharge electrode and the second discharge electrode extend. It may be a protrusion of a plurality of stripe pattern forms perpendicular to the.

According to another feature of the present invention, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the red light emitting discharge cell and the green light emitting discharge cell among the discharge cells are respectively meshed. And a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cells among the discharge cells, respectively, in the direction in which the first discharge electrode and the second discharge electrode extend. It can be regarded as a plurality of stripe patterns perpendicular to the shape and protrusions connecting the ends thereof.

According to another feature of the present invention, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the red light emitting discharge cell and the green light emitting discharge cell among the discharge cells are respectively meshed. And a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cells among the discharge cells, respectively, in the direction in which the first discharge electrode and the second discharge electrode extend. It can be regarded as two protrusions perpendicular to the shape of the stripe and protrusions connecting the ends thereof.

According to still another feature of the present invention, the first discharge electrode and the second discharge electrode may include at least one of silver, copper, gold, and aluminum.

According to still another feature of the present invention, the first discharge electrode and the second discharge electrode may be provided with a black additive.

According to another feature of the invention, the first discharge electrode and the second discharge electrode may be a multi-layer structure having a layer formed of at least a black material.

According to still another feature of the present invention, the first discharge electrode and the second discharge electrode may be disposed on a surface of the first substrate in the direction of the second substrate.

According to still another feature of the present invention, the present invention may further include a first dielectric layer covering the first discharge electrode and the second discharge electrode.

According to still another feature of the present invention, a protective film covering at least a portion of the first dielectric layer may be further provided.

According to still another feature of the present invention, portions other than the first and second protrusions of the first discharge electrode and the second discharge electrode may be disposed in the non-discharge region on the partition wall.

According to another feature of the present invention, the address electrodes may be disposed on a surface of the second substrate in the direction of the first substrate.

According to another feature of the invention, it may be further provided with a second dielectric layer covering the address electrodes.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is an exploded perspective view schematically showing a plasma display panel according to an exemplary embodiment of the present invention, and FIG. 5 is a perspective view schematically showing an arrangement of electrodes of the plasma display panel shown in FIG. 4, and FIG. 6. 4 is a plan view schematically showing an arrangement of electrodes and partitions of the plasma display panel shown in FIG. 4, and FIG. 7 is a cross-sectional view schematically illustrating a cross section taken along the line VII-VII of FIG. 4.

Referring to the drawings, the first substrate 211 and the second substrate 221 are disposed to face each other. The first substrate 211 and the second substrate 221 may be formed of a transparent material such as glass. A partition wall 224 is provided between the first substrate 211 and the second substrate 221. In FIG. 3, the barrier rib 224 is provided only on an upper surface of the second substrate 221 in the direction of the first substrate 211, but the second substrate 221 of the first substrate 211 ( Various modifications are possible, such as a partition wall may be provided on the upper surface of the 221 direction.

The partition wall 224 defines discharge cells 226 (see FIG. 7) in which gas discharge occurs together with the first substrate 211 and the second substrate 221. In this case, although the barrier rib 224 is provided in a lattice form in FIG. 4 to limit the discharge cells, the present invention is not limited thereto. That is, the barrier rib 224 may be provided in a stripe shape in one direction, for example, the x direction of FIG. 4.

In addition, although the discharge cells are shown as being arranged in a matrix form in FIG. 4, the present invention is not limited thereto, and various modifications are possible, such as being arranged in delta form. In addition, although the cross section of the discharge cell is illustrated in FIG. 4 as a quadrangle, various modifications may be made to a polygon such as a triangle, a pentagon, a circle, or an oval. This is the same in the embodiments or modifications described below.

As described above, discharge electrode pairs 214 are provided in the discharge cells defined by the first substrate 211, the second substrate 221, and the partition wall 224. That is, the plasma display panel 200 includes first discharge electrodes 212 extending in one direction so as to correspond to the discharge cells, and a second discharge corresponding to and spaced apart from the first discharge electrodes 213. Electrodes 213 are provided. The first discharge electrode 212 and the second discharge electrode 213 corresponding thereto are hereinafter referred to as discharge electrode pairs 214 for convenience.

 4 to 7, the discharge electrode pairs 214 extend in the y direction. 4 to 7, the discharge electrode pairs 214 are disposed on a surface of the first substrate 211 in the direction of the second substrate 221, but the present invention is not limited thereto.

The first discharge electrode 212 and the second discharge electrode 213 are electrodes for sustain discharge, and sustain discharge is performed between the electrodes to implement an image of the plasma display panel.

Since the first discharge electrode 212 and the second discharge electrode 213 should have good conductivity, the first discharge electrode 212 and the second discharge electrode 213 have at least one of silver (Ag), copper (Cu), gold (Au), and aluminum (Al). I can do it. In this case, as the distance between the first discharge electrode 212 and the second discharge electrode 213 increases, the voltage to be applied to the electrodes for sustain discharge increases, thereby increasing power consumption. As viewed from the first substrate 211, the first discharge electrode 212 and the second discharge electrode 213 are preferably provided with a first protrusion 212b and a second protrusion 213b, respectively. In this case, the first protrusion 212b of the first discharge electrode 212 and the second protrusion 213b of the second discharge electrode 213 corresponding to the first discharge electrode 212 are the first It is provided toward the center between the discharge electrode 212 and the second discharge electrode 213 corresponding thereto. That is, the discharge electrode pair 214 is provided toward the center.

In this case, the first discharge electrodes 212 and the second discharge electrodes 213 are provided with a black additive, or the first discharge electrodes 212 and the second discharge electrodes 213 are at least black. By having a multi-layer structure with a layer formed of a material, the contrast may be further improved. In this case, since light generated in the discharge cell is emitted to the outside as described above, it may be prevented to be emitted to the outside by the discharge electrode pair 214, so that the protrusions of the discharge electrode pair 214 ( 212b and 213b are provided in a mesh form, respectively.

The discharge electrodes 212 and 213 as described above are connected to a connection cable disposed at the edge of the plasma display panel 200 to receive power.

The discharge electrode pairs 214 as described above are covered with the first dielectric layer 215. This prevents the first discharge electrode 212 and the second discharge electrode 213 provided in the discharge electrode pair 214 from directly energizing each other, and the charged particles collide with the discharge electrodes 212 and 213 to prevent them. This is to prevent damage. Such dielectrics include PbO, B ₂ O ₃ and SiO ₂ . When light generated in the plasma display panel 200 is emitted to the outside through the first substrate 211, the first dielectric layer 215 may be formed of a transparent material.

In this case, at least part of the surface of the first dielectric layer 215 is preferably covered by a protective film. 4 and 7, the entire surface of the first dielectric layer 215 is shown covered by the protective film 216. The protective film 216 is formed by depositing a material such as MgO. In addition to protecting the first dielectric layer 215, the passivation layer also emits secondary electrons to further activate discharge.

Meanwhile, in the plasma display panel 200 according to the present exemplary embodiment illustrated in FIGS. 4 to 7, the discharge electrode pairs 214 extend in the one direction, that is, the y direction, and the discharge electrode pairs 214. Address electrodes 222 extending to intersect with each other, i. In this electrode arrangement structure, an address discharge occurs between at least one of the first discharge electrode 212 and the second discharge electrode 213 and the address electrode 222, and then the first discharge electrode ( The sustain discharge is caused to occur between the 212 and the second discharge electrode 213.

As such, the discharge cells of the plasma display panel driven by the address discharge and the sustain discharge may further include at least one address electrode in addition to two discharge electrodes (one discharge electrode pair), which are commonly referred to as X electrodes and Y electrodes. have. The address discharge is a discharge occurring between the Y electrode and the address electrode. As in the case of the plasma display panel according to the present embodiment, the address electrode 222 is lower than the first discharge electrode 212 and the second discharge electrode 213. In the case of, the one of the first discharge electrode 212 and the second discharge electrode 213 becomes a Y electrode and the other electrode becomes an X electrode. The address electrode 222 may also be formed of a conductive metal.

The address electrodes 222 as described above may be disposed on a surface of the second substrate 221 in the direction of the first substrate 211. In this case, the address electrodes 222 may be covered to charge particles during discharge. It is preferable to further include a dielectric layer 223 to prevent the collision with the address electrode 222 to damage the address electrode 222. The dielectric layer 223 is preferably formed as a dielectric capable of inducing charged particles. Such dielectrics include PbO, B ₂ O ₃ , SiO _2, and the like.

On the other hand, the phosphor 225 is provided inside the discharge cell 226 (see FIG. 7), more specifically, on the upper surface 223a of the dielectric layer and the side surface 224a of the partition wall. In this case, red, green and blue light emitting phosphors are provided in the discharge cells so that the discharge cells are divided into a red light emitting cell, a green light emitting cell and a blue light emitting cell. The phosphor 225 is coated with a phosphor paste of a red light emitting phosphor, a green light emitting phosphor, and a blue light emitting phosphor, and a phosphor paste mixed with a solvent and a binder on the upper surface 223a of the dielectric layer and the side surface 224a of the partition wall. It is formed by drying and firing. Examples of the red light-emitting phosphor include Y (V, P) O ₄ : Eu, and examples of the green light-emitting phosphor include Zn ₂ SiO ₄ : Mn, YBO ₃ : Tb, and the blue light-emitting phosphor includes BAM: Eu.

4 and 7 illustrate that the phosphor 225 is disposed on the upper surface 223a of the dielectric layer and the side surface 224a of the partition wall, but the phosphor emits visible light by receiving ultraviolet rays emitted from a discharge gas described below. The position is not limited to the upper surface 223a of the dielectric layer and the side surface 224a of the partition wall, but may be in the discharge cell 226.

In addition, a discharge gas is filled in the discharge cell 226. The discharge gas is, for example, Ne-Xe mixed gas containing 5% to 15% of Xe, and at least a part of Ne may be replaced with He as necessary. Of course, other gases can also be used.

In the above structure, as described above, the red light and the green light generated in the red light emitting cells and the green light emitting discharge cells have high luminance, so that the luminance decrease caused by the pair of discharge electrodes 214R and 214G is high. Although not a problem, the blue light generated in the blue light emitting discharge cell has a low luminance, thereby causing a large luminance deterioration effect by the discharge electrode pair 214B.

Accordingly, the plasma display panel according to the present embodiment includes a first protrusion 212Bb of the first discharge electrode 212B corresponding to the blue light emitting discharge cell among the discharge cells, when viewed from the first substrate 211. The area of the second protrusion 212Bb of the second discharge electrode 213B is the first protrusion 212Rb of the first discharge electrodes 212R and 212G corresponding to the red light emitting cell and the green light emitting cell among the discharge cells. , 212Gb) and the second protrusions 213Rb and 213Gb of the second discharge electrodes 213R and 213G. That is, an element that prevents the emission of blue light generated in the blue light emitting discharge cell to the outside is more than an element that prevents the emission of red and green light generated in the red light emitting cell and the green light emitting discharge cell to the outside. By making it small, the luminance fall rate of blue light is made to be similar to the luminance fall rate of red and green light.

By taking the above structure, the luminance reduction rate generated when blue light having a relatively low emission luminance is emitted to the outside can be made similar to the luminance reduction ratio of the red and green light. It can be increased. In addition, since the area of the electrode is reduced, the reactive power consumption is reduced, thereby greatly reducing the power consumption.

The operation of the plasma display panel according to an embodiment of the present invention having the above configuration will be briefly described as follows.

In general, in a plasma display panel, an address discharge voltage Va is applied between one electrode of a discharge electrode pair and an address electrode to generate an address discharge, and discharge cells to be emitted by the address discharge are selected, and then the selected discharge is selected. An image is implemented through a series of processes in which light is generated by sustain discharge between the first and second discharge electrodes of the cells.

Selecting a discharge cell to generate sustain discharge through address discharge means that wall charges are accumulated on the surface of the protective film of the first dielectric layer covering the first discharge electrode and the second discharge electrode so that sustain discharge can occur. . For example, when the address discharge is completed, cations are accumulated in the region adjacent to the first discharge electrode and electrons are accumulated in the region adjacent to the second discharge electrode. Of course, the opposite charge may accumulate.

The sustain discharge after the address discharge as described above is applied to the first discharge electrode and the second discharge electrode by applying a voltage so that the charge accumulated in the region adjacent to each discharge electrode is transferred into the discharge cell. The charges accumulated in the region adjacent to the electrode are bonded to each other to become an atom or collide with the discharge gas in the discharge cell. In this case, the difference between the potentials applied to the first discharge electrode and the second discharge electrode is referred to as sustain discharge voltage Vs. For example, when cations are accumulated in a region adjacent to the first discharge electrode and electrons are accumulated in a region adjacent to the second discharge electrode when the address discharge is completed, a positive voltage is applied to the first discharge electrode and applied to the second discharge electrode. When a negative voltage is applied, charges accumulated in the region adjacent to each discharge electrode move. Accordingly, charges opposite to immediately after the address discharge are accumulated in the regions adjacent to the first discharge electrode and the second discharge electrode. Thereafter, a voltage having an opposite potential is again applied to the first discharge electrode and the second discharge electrode to move the accumulated charges again. This transfer of charges continues over the sustain discharge period.

As such, when the sustain discharge voltage Vs is applied between the first discharge electrode and the second discharge electrode of the selected discharge cell, the charges accumulated in the region adjacent to the first discharge electrode and the second discharge electrode are moved. They combine with each other to become atoms or collide with the discharge gas in the discharge cell to generate new electrons and ions.

Through the above process, the energy level of the discharge gas is increased, and ultraviolet rays are emitted from the discharge gas while the energy level of the discharge gas changes from the high energy level to the low energy level. This ultraviolet light raises the energy level of the phosphor contained in the phosphor disposed in the discharge cell, and the visible light is emitted while the energy level of the phosphor transitions from the high energy level to the low energy level. Thus, the image is realized by the visible light emitted from the discharge cells.

When the image is reproduced according to the above principle, as described above, by reducing the elements that prevent the blue light from being emitted, the luminance deterioration rate generated when blue light having a relatively low luminance is emitted to the outside is reduced. It can be similar to the luminance reduction rate of the red and green light, through which it is possible to increase the luminance of the image to be implemented. In addition, since the area of the electrode is reduced, the reactive power consumption is reduced, thereby greatly reducing the power consumption.

FIG. 8 is a plan view schematically illustrating a modification of the arrangement of the electrodes and the partition walls of the plasma display panel illustrated in FIG. 6.

Referring to FIG. 8, the first protrusions 212Rb and 212Gb and the second discharge electrodes 213R and 213G of the first discharge electrodes 212R and 212G corresponding to the red light emitting cell and the green light emitting cell among the discharge cells. Each of the second protrusions 213Rb and 213Gb is a mesh-shaped protrusion. The first protrusion 212Bb of the first discharge electrode 212B and the second protrusion 213Bb of the second discharge electrode 213B corresponding to the blue light emitting discharge cells among the discharge cells are respectively the first discharge electrode 212. ) And a plurality of stripe patterns 212Bbr and 213Bbr parallel to the direction in which the second discharge electrode 213 extends (y direction) and portions 212Bbc and 213Bbc connecting the ends thereof.

By adopting such a structure, by reducing the elements that prevent the light emitted from the blue light emitting discharge cells from being emitted, the luminance deterioration rate generated when blue light having a relatively low light emission luminance is emitted to the outside is the luminance of the red and green light. It can be similar to the reduction rate, thereby increasing the brightness of the image to be implemented. In addition, since the area of the electrode is reduced, the reactive power consumption is reduced, thereby greatly reducing the power consumption.

FIG. 9 is a plan view schematically illustrating another modified example of an arrangement of the electrodes and the partition walls of the plasma display panel illustrated in FIG. 6.

9, the first protrusions 212Rb and 212Gb and the second discharge electrodes 213R and 213G of the first discharge electrodes 212R and 212G corresponding to the red light emitting cell and the green light emitting cell among the discharge cells. Each of the second protrusions 213Rb and 213Gb is a mesh-shaped protrusion. The first protrusion 212Bb of the first discharge electrode 212B and the second protrusion 213Bb of the second discharge electrode 213B of the discharge cells respectively correspond to the first discharge electrode 212. And a plurality of stripe patterns 212Bbc perpendicular to the direction in which the second discharge electrode 213 extends (y direction), and a portion 212Bbr connecting the ends thereof.

By adopting such a structure, by reducing the elements that prevent the light emitted from the blue light emitting discharge cells from being emitted, the luminance deterioration rate generated when blue light having a relatively low light emission luminance is emitted to the outside is the luminance of the red and green light. It can be similar to the reduction rate, thereby increasing the brightness of the image to be implemented. In addition, since the area of the electrode is reduced, the reactive power consumption is reduced, thereby greatly reducing the power consumption.

9, the first protrusion 212Bb of the first discharge electrode 212B and the second protrusion 213Bb of the second discharge electrode 213B respectively correspond to the blue light emitting discharge cell. Only the plurality of stripe patterns 212Bbc are perpendicular to the direction in which the discharge electrode 212 and the second discharge electrode 213 extend (y direction), and the portion 212Bbr connecting the ends thereof is not provided. Of course, various modifications are possible.

FIG. 10 is a plan view schematically illustrating another modified example of an arrangement of electrodes and a partition of the plasma display panel illustrated in FIG. 6.

Referring to FIG. 10, the first protrusions 212Rb and 212Gb and the second discharge electrodes 213R and 213G of the first discharge electrodes 212R and 212G corresponding to the red light emitting cell and the green light emitting cell among the discharge cells. Each of the second protrusions 213Rb and 213Gb is a mesh-shaped protrusion. The first protrusion 212Bb of the first discharge electrode 212B and the second protrusion 213Bb of the second discharge electrode 213B of the discharge cells respectively correspond to the first discharge electrode 212. And the second stripe pattern 212Bbc perpendicular to the extending direction (y direction) and the second discharge electrode 213 and a portion 212Bbr connecting the ends thereof.

By adopting such a structure, by reducing the elements that prevent the light emitted from the blue light emitting discharge cells from being emitted, the luminance deterioration rate generated when blue light having a relatively low light emission is emitted to the outside is the brightness of the red and green light. It can be similar to the reduction rate, thereby increasing the brightness of the image to be implemented. In addition, since the area of the electrode is reduced, the reactive power consumption is reduced, thereby greatly reducing the power consumption.

11 is a schematic cross-sectional view of a plasma display panel according to another exemplary embodiment of the present invention.

As described above, light generated in the discharge cell 226 is prevented from being emitted by the discharge electrode pairs 214 while being emitted to the outside, thereby lowering the brightness of the light emitted to the outside. This is the same for not only blue light but also red and green light. Accordingly, as shown in FIG. 11, portions 212a and 213a other than the first protrusion 212b and the second protrusion 213b of the first discharge electrode 212 and the second discharge electrode 213 are partition walls 224. By being disposed in the non-discharge area on the ()), it is possible to more efficiently emit light generated in the discharge cell 226 to the outside.

On the other hand, unlike the plasma display panel according to the above-described embodiments, protrusions may not be provided on the first discharge electrode and the second discharge electrode. That is, the projection part is not provided in the 1st discharge electrode and the 2nd discharge electrode, but the part which encounters the visible light emitted by the fluorescent substance among the 1st discharge electrode and the 2nd discharge electrode, faces the visible light emitted by the blue light emitting fluorescent substance. If the area of the hitting portion is smaller than the area of the portion facing the visible light emitted from the remaining red or green light emitting phosphors, the same effects as described above can be obtained.

In addition, unlike the plasma display panel according to the above-described embodiments, the discharge may occur even without the address electrode. That is, the discharge may be generated only by the discharge electrodes. For example, a plasma display panel that implements an image may be manufactured by arranging the first discharge electrode and the second discharge electrode to cross each other. Also in this case, various modifications as described above or obvious to those skilled in the art are possible, such that the first discharge electrode and the second discharge electrode may be provided with a protruding portion or may not be provided.

According to the plasma display panel of the present invention made as described above, the area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cell of the discharge cells, Luminance of blue light by the first discharge electrode and the second discharge electrode by being smaller than the area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the red light emitting discharge cell and the green light emitting discharge cell The reduction rate can be made similar to the luminance reduction rate of the red and green light. As a result, the luminance of the blue light having poor luminous efficiency can be relatively improved, and the electrode area can be reduced, thereby reducing the reactive power consumption, thereby significantly reducing the power consumption.

Although the present invention has been described with reference to the embodiments shown in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (20)

A first substrate and a second substrate disposed to face each other; A partition wall disposed between the first substrate and the second substrate and defining discharge cells in which gas discharge occurs together with the first substrate and the second substrate; A plurality of first discharge electrodes extending in one direction to correspond to the discharge cells and having a plurality of first protrusions when viewed from the first substrate; A plurality of second discharge electrodes corresponding to the first discharge electrodes, spaced apart from the first discharge electrodes, and having a plurality of second protrusions when viewed from the first substrate; A plurality of address electrodes disposed to intersect the first discharge electrodes and the second discharge electrodes; Red, green, and blue light emitting phosphors disposed in the discharge cells such that the discharge cells are divided into red light emitting discharge cells, green light emitting discharge cells, and blue light emitting discharge cells; And A discharge gas in the discharge cells; When viewed from the first substrate, the area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cell among the discharge cells is the red light emitting discharge of the discharge cells. And the area of the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the cell and the green light emitting discharge cell. A first substrate and a second substrate disposed to face each other; A partition wall disposed between the first substrate and the second substrate and defining discharge cells in which gas discharge occurs together with the first substrate and the second substrate; A phosphor including a red light emitting phosphor, a green light emitting phosphor, and a blue light emitting phosphor formed in the discharge cells; And And a portion of the phosphor facing the visible light emitted from the phosphor, and the area of the portion facing the visible light emitted from the blue light emitting phosphor is smaller than the area of the portion facing the visible light emitted from the other phosphor, and is separated by the partition wall. And discharge electrodes which cause gas discharge in the discharge cells to be limited. The method of claim 2, The discharge electrodes may include a first discharge electrode and a second discharge electrode which are spaced apart from each other and extend to face each other. The method of claim 3, wherein And the first discharge electrode has at least one first protrusion, and the second discharge electrode has at least one second protrusion. The method of claim 2, And a plurality of address electrodes extending to intersect the discharge electrodes. The method according to claim 1 or 4, The first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the first discharge electrode are provided to face the center between the first discharge electrode and the corresponding second discharge electrode. Plasma display panel, characterized in that. The method according to claim 1 or 4, And a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode, each of which is a mesh-shaped protrusion. The method according to claim 1 or 4, Among the discharge cells, a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the red light emitting cell and the green light emitting discharge cell are mesh-shaped protrusions, respectively. A plurality of stripe patterns parallel to the direction in which the first discharge electrode and the second discharge electrode extend, respectively, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cell; Plasma display panel characterized in that the protrusions of the form connecting the ends of the. The method according to claim 1 or 4, Among the discharge cells, a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the red light emitting cell and the green light emitting discharge cell are mesh-shaped protrusions, respectively. The first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cells each have a plurality of stripe pattern shapes perpendicular to the direction in which the first discharge electrode and the second discharge electrode extend. Plasma display panel, characterized in that the projection. The method according to claim 1 or 4, Among the discharge cells, a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the red light emitting cell and the green light emitting discharge cell are mesh-shaped protrusions, respectively. A plurality of stripe patterns perpendicular to a direction in which the first discharge electrode and the second discharge electrode extend, respectively, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cell; Plasma display panel characterized in that the protrusions of the form connecting the ends of the. The method according to claim 1 or 4, Among the discharge cells, a first protrusion of the first discharge electrode and a second protrusion of the second discharge electrode corresponding to the red light emitting cell and the green light emitting discharge cell are mesh-shaped protrusions, respectively. Two stripe patterns perpendicular to the direction in which the first discharge electrode and the second discharge electrode extend, respectively, the first protrusion of the first discharge electrode and the second protrusion of the second discharge electrode corresponding to the blue light emitting discharge cells; Plasma display panel characterized in that the protrusions of the form connecting the ends of the. The method according to any one of claims 1 to 5, And the first discharge electrode and the second discharge electrode include at least one of silver, copper, gold, and aluminum. The method according to any one of claims 1 to 5, And the first discharge electrode and the second discharge electrode are provided with a black additive. The method according to any one of claims 1 to 5, And the first discharge electrode and the second discharge electrode have a multi-layer structure having a layer formed of at least a black material. The method according to any one of claims 1 to 5, And the first discharge electrode and the second discharge electrode are disposed on a surface of the first substrate in the direction of the second substrate. The method according to any one of claims 1 to 5, And a first dielectric layer covering the first discharge electrode and the second discharge electrode. The method of claim 16, And a passivation layer covering at least a portion of the first dielectric layer. The method according to any one of claims 1 to 5, And portions other than the first and second protrusions of the first discharge electrode and the second discharge electrode are disposed in the non-discharge region on the partition wall. The method according to claim 1 or 5, And the address electrodes are disposed on a surface of the second substrate in a direction of the first substrate. The method according to claim 1 or 5, And a second dielectric layer covering the address electrodes.

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