KR100515847B1 - Plasma display panel - Google Patents

Abstract

According to the present invention, a plasma display panel is disclosed. The plasma display panel includes a first and a second substrate facing each other to form a discharge space, a plurality of pairs of discharge sustain electrodes provided on the first substrate, a plurality of address electrodes provided on the second substrate, and a discharge space. In a plasma display panel comprising a partition partitioning into a plurality of cell spaces, the cell space being formed of a discharge cell in which discharge is performed by electrodes and a non-discharge cell in which discharge is not performed, wherein the partition space is formed in the partition wall and extends in the partition direction It is formed in the first exhaust passage and the partition wall formed along the, further comprising a second exhaust passage for communicating the discharge cell and the non-discharge cell, characterized in that the first and second exhaust passage is connected to each other. According to the disclosed plasma display panel, exhaust conductance can be improved and crosstalk can be prevented.

Description

Plasma display panel {Plasma display panel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having an improved structure so that exhaust conductance can be improved while crosstalk is prevented.

The plasma display panel is a flat panel display panel which displays an image by using gas discharge phenomenon, and is excellent in various display capabilities such as display capacity, brightness, contrast, afterimage, and viewing angle. In addition, it is being spotlighted as a next-generation flat panel display panel that can replace a CRT because it is thin and can display a large screen.

The plasma display panel includes a first panel and a second panel opposed to the first panel.

The first panel includes a first substrate, a plurality of discharge sustaining electrodes comprising a pair of scan electrodes and sustain electrodes formed on the first substrate, a bus electrode in contact with the discharge sustaining electrode, the discharge sustaining electrode and the bus electrode And a first dielectric layer formed on the first substrate to be buried. A protective layer may be provided on the first dielectric layer.

The second panel includes a second substrate, a plurality of address electrodes formed on the second substrate, a second dielectric layer formed to fill the address electrodes, a partition partitioning a discharge space, and a fluorescent layer formed around the partition wall. It is provided.

The plasma display panel is provided by bonding and encapsulating the first panel and the second panel configured as described above. At this time, the plasma display panel undergoes an exhaust process for discharging impurity gas and a discharge gas filling process. . Here, the exhausting process is a process of sucking the internal gas from the vent provided on the rear side by using the vacuum pump while the plasma display panel is heated.

However, in such an exhaust process, since a smooth ventilation of the gas is inhibited due to the partition wall partitioning the discharge space, it takes a long time to exhaust, in particular, there is a problem that impurities remain in the cell space relatively far away from the vent hole. .

When the purification of the inside of the plasma display panel is insufficient, the discharge gas charged later and the impurity gas remaining inside the panel are mixed to change the composition of the discharge gas, which causes the display operation to become unstable.

In order to solve the problem, a method of improving the exhaust conductance by forming a step or groove in the partition wall is used. According to this, charged particles move to an adjacent cell through the step or groove formed in the partition wall, Regardless, there is a problem of crosstalk in which a discharge error occurs.

In particular, in the high-precision plasma display panel, since the cell size becomes small, the necessity of solving the crosstalk problem is further increased.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a plasma display panel having an improved barrier rib structure to prevent crosstalk while improving exhaust conductance.

In order to achieve the above object, the plasma display panel according to an aspect of the present invention, the first and second substrates facing each other to form a discharge space, a plurality of pairs of discharge sustaining electrodes provided on the first substrate and And a plurality of address electrodes provided on the second substrate, and a partition wall partitioning the discharge space into a plurality of cell spaces, wherein the cell spaces are discharge cells that are discharged by the electrodes and discharges are not performed. A plasma display panel comprising non-discharge cells, wherein the barrier ribs are formed in the barrier ribs, and are formed in the first exhaust passage and the barrier ribs formed along the extending direction of the barrier ribs, and the second exhaust passages communicate with the discharge cells and the non-discharge cells. Further provided, wherein the first and second exhaust passage is characterized in that connected to each other.

Here, the discharge cells and the non-discharge cells may be alternately arranged.

According to another aspect of the present invention, a plasma display panel includes a first and a second substrate facing each other to form a discharge space, a plurality of pairs of discharge sustaining electrodes provided on the first substrate, and the second substrate. A plasma display panel having a plurality of address electrodes provided and a partition wall partitioning the discharge space into a plurality of cell spaces, the plasma display panel being formed on the partition wall and having a first exhaust passage formed along an extension direction of the partition wall; It is formed in the partition wall, and further comprising a plurality of second exhaust passage communicating the cell space and the first exhaust passage, characterized in that the second exhaust passage is formed so as not to face each other to prevent crosstalk. .

Here, the plurality of second exhaust passages may be formed to face the selected one direction.

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

1 is an exploded perspective view showing a plasma display panel according to an aspect of the present invention, Figure 2 is a plan view schematically showing the plasma display panel of FIG. 3 is a plan view illustrating a partition structure of a plasma display panel according to another aspect of the present invention.

Referring to FIG. 1, a plasma display panel 50 according to an embodiment of the present invention is formed by bonding a first panel 20 and a second panel 30 to each other.

The first panel 20 serving as the display portion of the image includes a first substrate 1, a discharge sustaining electrode 2, a bus electrode 3, a first dielectric layer 6, and a protective layer 7.

The discharge sustaining electrode 2 may be formed in a predetermined pattern on the first substrate 1. For example, a pair of discharge sustaining electrodes 2 composed of two opposing electrodes may be formed to be vertically and horizontally arranged. Can be.

As shown in FIG. 2, the discharge holding electrode 2 is formed only on the upper part of the discharge cell 15, which is a space in which the discharge is to be performed, and is maintained on the upper part of the non-discharge cell 16 where the discharge is not performed. The electrode 2 is not formed.

The discharge sustain electrode 2 may be made of a transparent material, for example, indium tin oxide (ITO), in order to transmit visible light emitted from the fluorescent layer 8. The discharge sustain electrode 2 may be formed by sputtering or vacuum deposition.

In order to supply current to the discharge sustaining electrode 2, one side of the discharge sustaining electrode 2 is electrically connected to the bus electrode 3. The bus electrode 3 may be provided with a metal material having excellent electrical conductivity, for example, a single metal layer such as aluminum or silver, or a triple metal layer of chromium-copper-chromium.

As shown in FIG. 1, a first dielectric layer 6 is formed on the first substrate 1 to cover the bus electrode 3 and the discharge sustain electrode 2.

A protective layer 7 is provided on the first dielectric layer 6, which protects the first dielectric layer 6 from ions or electrons and has a function as a cathode during discharge.

On the other hand, the second panel 30 includes a second substrate 12, an address electrode 11, a second dielectric layer 10, a partition 9, and a fluorescent layer 8.

The second substrate 12 may be formed of a glass material having the same material as that of the first substrate 1.

The address electrodes 11 may be formed in plural in a predetermined pattern, for example, a stripe pattern, on the second substrate 12. Here, the longitudinal direction of the address electrode 11 is formed to be substantially orthogonal to the longitudinal direction of the bus electrode 3.

The second dielectric layer 10 is formed on the second substrate 12 to cover the address electrode 11.

The partition wall 9 is formed on the second dielectric layer 10. As shown in FIG. 2, the partition 9 partitions a plurality of cell spaces 15 and 16, wherein the cell spaces 15 and 16 are discharge cells 15 and discharges, which are spaces in which discharges are performed. It consists of the non-discharge cells 16 which are not performed, and the said discharge cells 15 and the non-discharge cells 16 are alternately arrange | positioned.

The cell spaces 15 and 16 may have a hexagonal structure, and the discharge cells 15 are formed to have a larger space than the non-discharge cells 16.

The partition 9 has a first exhaust passage 101 formed along the extending direction of the partition 9 and a second exhaust passage 102 for communicating the discharge cells 15 and the non-discharge cells 16. It is.

The first exhaust passage 101 is provided with a groove formed along the extending direction of the partition wall 9.

The second exhaust passage 102 is provided with grooves formed in the partition wall 9 that divides the discharge cells 15 and the non-discharge cells 16. The discharge cell 15 and the non-discharge cell 16 communicate with each other through the second exhaust passage 102.

The second exhaust passage 102 is formed such that the discharge cell 15 communicates with the non-discharge cell 16 in which discharge is not performed, thereby preventing crosstalk while ensuring an exhaust path of the impure gas.

For example, as illustrated in FIG. 2, the exhaust path may be formed in the transverse direction through the second exhaust path 102. In the arrangement direction of the address electrode 11, the movement of the charged particles is severe. In order to prevent the crosstalk caused by the movement of the particles, the second exhaust passage 102, as shown in FIG. It is formed so as not to be connected to each other in the longitudinal direction which is an arrangement direction of the address electrode 11.

As shown in FIG. 2, the first exhaust passage 101 and the second exhaust passage 102 intersect with each other and are discharged from the cell spaces 15 and 16 through the second exhaust passage 102. An exhaust path may be secured so that the exhaust gas is discharged to the outside via the first exhaust passage 101.

On the other hand, the fluorescent layer 8, as shown in Figure 1, is applied over the side of the partition wall 9 on the second dielectric layer 10 corresponding to the discharge cell 15, the red fluorescent layer, It consists of a green fluorescent layer and a blue fluorescent layer.

The first panel 20 and the second panel 30 may be bonded and encapsulated using, for example, frit glass, and thereafter, in order to remove impurities in the plasma display panel 50, the interior of the first panel 20 and the second panel 30 may be a vacuum pump. Exhaust that takes in gas is made. In addition, a process of filling a discharge gas into the plasma display panel 50 is performed, wherein an inert gas such as He, Ne, Xe, Ar, or Kr may be used as the discharge gas. In particular, in consideration of the driving voltage and the electrode life, a binary or ternary mixed gas in which a small amount of other inert gas is added to the Xe gas may be used.

According to the present invention, the first exhaust passage 101 formed along the extending direction of the partition wall 9 and the second exhaust passage 102 communicating the discharge cells 15 and the non-discharge cells 16 are provided. Therefore, virtually all the cell spaces 15 and 16 are formed to communicate with each other, so that the exhaust conductance can be improved. Accordingly, impurities do not remain in the plasma display panel 50 and all of them may be discharged, thereby improving brightness and driving efficiency of the plasma display panel 50.

3 illustrates a structure of the partition wall 9 of the plasma display panel 50 according to another aspect of the present invention. As shown in the figure, the partition wall 9 is provided in a well sperm shape, whereby the cell space partitioned is provided in a rectangular shape. Here, the cell space may consist of only the discharge cells 15 in which discharge is performed.

 A first exhaust passage 101 is formed in the partition 9 in the extending direction of the partition 9.

In addition, a second exhaust passage 102 is formed in the partition 9 so that the discharge cell 15 and the first exhaust passage 101 communicate with each other.

Therefore, as shown in the figure, the exhaust path is ensured so that the exhaust gas discharged from the discharge cell 15 through the second exhaust passage 102 is discharged to the outside through the first exhaust passage 101.

The second exhaust passages 102 are formed in one direction (x direction) so as not to face each other, for example, so that the discharge cells 15 do not communicate directly. Therefore, since the movement between the discharge cells 15 of the charged particles is prevented by the partition 9, the problem of crosstalk can be solved.

The plasma display panel of the present invention includes a first exhaust passage along an extension direction of a partition wall partitioning a cell space, and communicates a second exhaust passage or a cell space communicating the discharge cells and the non-discharge cells with the first exhaust passage. By providing a second exhaust passage, all cell spaces can communicate with each other through the first and second exhaust passages, thereby improving exhaust conductance. Therefore, the impurity gas inside the plasma display panel can be effectively exhausted, and in particular, the impurity gas in the cell space located relatively far from the vent can be smoothly exhausted.

When the composition change of the discharge gas due to the impurity gas is prevented, a more stable image can be obtained, and the brightness and driving efficiency of the plasma display panel can be improved.

In addition, since the process of exhausting the impure gas and the filling process of the discharge gas can be made easily and quickly, the work efficiency can be improved and the manufacturing cost can be reduced.

According to the present invention, as described above, the exhaust path of the impurity gas is secured and the direct discharge is not directly communicated between the discharge cells in which the discharge is performed, thereby structurally preventing the charged particles from moving to the adjacent discharge cells through the exhaust path. Therefore, the problem of crosstalk can be solved, and the image quality can be improved, and a plasma display panel suitable for a high precision display device can be provided.

Although the present invention has been described with reference to the embodiments shown in the accompanying drawings, this is merely exemplary, and those skilled in the art to which the present invention pertains various modifications and equivalent other embodiments from this. You will understand the point. Therefore, the true scope of protection of the present invention should be defined by the appended claims.

1 is an exploded perspective view showing a plasma display panel according to an aspect of the present invention;

2 is a plan view schematically illustrating the plasma display panel of FIG. 1;

3 is a plan view illustrating a barrier rib structure of a plasma display panel according to another aspect of the present invention.

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

1st substrate 2nd discharge holding electrode

3 bus electrode 6 first dielectric layer

7 .... protective layer 8 ... fluorescent layer

9 partition bulk 10 second dielectric layer

11 ... address electrode 12 ... second substrate

15 ... discharge cell 16 ... non-discharge cell

20 ... front panel 30 ... rear panel

50 Plasma display panel 101, first exhaust passage

102.2nd exhaust passage

Claims (4)

A plurality of first and second substrates facing each other to form a discharge space, a plurality of pairs of discharge sustain electrodes provided on the first substrate, a plurality of address electrodes provided on the second substrate, and a plurality of discharge spaces A plasma display panel comprising a partition wall partitioning into a cell space, wherein the cell space includes a discharge cell in which discharge is performed by the electrodes and a non-discharge cell in which discharge is not performed. A first exhaust passage formed in the partition wall and formed along an extension direction of the partition wall; And And a second exhaust passage formed in the partition wall, the second exhaust passage communicating with the discharge cells and the non-discharge cells, wherein the first and second exhaust passages are connected to each other. The plasma display panel of claim 1, wherein the discharge cells and the non-discharge cells are alternately disposed. A plurality of first and second substrates facing each other to form a discharge space, a plurality of pairs of discharge sustain electrodes provided on the first substrate, a plurality of address electrodes provided on the second substrate, and a plurality of discharge spaces A plasma display panel having partition walls partitioning into cell spaces, comprising: A first exhaust passage formed in the partition wall and formed along an extension direction of the partition wall; And And a plurality of second exhaust passages formed in the partition wall and communicating the cell space and the first exhaust passage, wherein the second exhaust passages are formed so as not to face each other so as to prevent crosstalk. Plasma display panel. 4. The plasma display panel of claim 3, wherein the plurality of second exhaust passages face one selected direction.