KR100647587B1 - Plasma display panel - Google Patents

Abstract

According to the present invention, a plasma display panel is disclosed. The plasma display panel includes a first substrate, a first panel including a plurality of pairs of discharge sustaining electrodes formed on the first substrate, a second substrate spaced apart from the first substrate by a predetermined distance, and a second substrate; A second panel comprising a plurality of address electrodes formed on the substrate, and a partition wall partitioning the discharge space into a plurality of discharge cells, wherein the first panel and the second panel are joined to each other. And positioning means for alignment of the second panel. According to the disclosed plasma display panel, misalignment of the front side panel and the back side panel is prevented to prevent discharge failure or misdischarge, and stable driving of the plasma display panel is possible.

Description

Plasma display panel {Plasma display panel}

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

FIG. 2 is a cross-sectional view taken along line A-A of the plasma display panel shown in FIG. 1;

3 is a plan view schematically showing the plasma display panel of FIG. 1;

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

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

10 ... first panel 11 ... first substrate

12 Discharge sustaining electrode 12 `... Discharge part of discharge sustaining electrode

13 bus electrode 14 first dielectric layer

15.Protective layer 16.Uneven

20 ... Second panel 21 ... Second substrate

22 ... address electrode 23 ... second dielectric layer

24 ... Bulk 25 ... Fluorescent layer

26 ... indentation 27 ... discharge cell

36. Positioning means

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which misalignment of a front panel and a back panel is reduced.

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 disposed at a front surface thereof and a second panel coupled to the plasma panel disposed at a rear surface thereof.

The first panel includes a first substrate and a plurality of pairs of discharge sustaining electrodes formed on the first substrate.

The second panel may include a second substrate that is spaced apart from the first substrate by a predetermined distance to form a discharge space, and a plurality of address electrodes that are formed on the second substrate and generate discharge in the discharge space together with the discharge holding electrode. And a partition wall partitioning the discharge space into a plurality of discharge cells.

The first and second panels configured as described above are bonded to each other so that the plasma display panel is provided. In this case, when the panel is assembled at the correct position, discharge failure is prevented and the display can be smoothly implemented. More specifically, a pair of discharge sustaining electrodes in which sustain discharge is performed may be disposed at the center of the discharge cell so that smooth discharge can be performed.

In particular, in order to improve the brightness and driving efficiency of the display panel, the discharge sustaining electrode and the barrier rib pattern have a tendency to be improved in various forms beyond the simple stripe pattern. As a result, precise alignment is required.

According to the prior art for solving the alignment problem of the panel, alignment marks are formed on the first and second substrates, and the alignment state is recognized by the camera to prevent misalignment.

However, according to the prior art, there is a problem in that discharge accuracy may occur because the accuracy of alignment is not sufficient.

In addition, since the alignment mark is formed in the non-display area of the edge of the panel, there is a disadvantage in preventing misalignment in the discharge cells located inside the panel. That is, even when there is a slight error on one side of the panel, there is a problem that a serious misalignment may occur on the opposite side.

In addition, there is a problem that misalignment may occur due to the slight movement as a result of the lack of a device that can prevent the movement of the panel during the actual assembly.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and other problems, and an object thereof is to provide a plasma display panel having an improved structure in which misalignment of the panel is reduced.

Another object of the present invention is to provide a plasma display panel in which the change of the alignment position due to the relative movement of the panel is prevented.

Furthermore, another object of the present invention is to provide an improved plasma display panel in which the brightness and contrast of the panel is improved.

In order to achieve the above object, a plasma display panel according to an aspect of the present invention is a first panel and a first panel including a plurality of pairs of discharge holding electrodes formed on the first substrate and the first substrate and predetermined And a second panel including a second substrate spaced apart from each other to form a discharge space, a plurality of address electrodes formed on the second substrate, and a partition wall partitioning the discharge space into a plurality of discharge cells. A plasma display panel comprising a panel and a second panel bonded to each other, further comprising positioning means for aligning the first panel and the second panel.

Here, the positioning means may be provided with an uneven portion formed in the first panel and a recessed portion formed in the second panel.

The recess may be formed in at least a portion of the partition wall, and the recess may be formed at a position corresponding to the recess.

In addition, at least a portion of the positioning means may be provided with a low brightness color.

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

1 is an exploded perspective view of a plasma display panel according to an exemplary embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line A-A of the plasma display panel shown in FIG.

1 and 2, a plasma display panel 30 according to an embodiment of the present invention is formed by bonding a first panel 10 and a second panel 20 to each other.

The first panel 10 serving as the display portion of the image includes a first substrate 11, a discharge sustaining electrode 12, a bus electrode 13, a first dielectric layer 14, and a protective layer 15. .

The bus electrode 13 is formed in a predetermined pattern, for example, a stripe pattern, on the first substrate 11. The bus electrode 13 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.

On the bus electrode 13, a plurality of pairs of discharge sustaining electrodes 12 are formed which are electrically connected to the bus electrodes 13 so as to protrude from the connection portions in the discharge cell 27 inward direction. Here, the discharge sustaining electrode 12 is provided in a T-shape, and the discharge part 12 ′ having a large area is disposed inside the discharge cell 27.

The discharge sustain electrode 12 may be made of a transparent material, for example, indium tin oxide (ITO), in order to transmit visible light emitted from the fluorescent layer 25.

The first dielectric layer 14 is formed on the first substrate 11 to include the bus electrode 13 and the discharge sustain electrode 12.

A protective layer 15 is provided on the first dielectric layer 14, which protects the first dielectric layer 14 from ions or electrons and functions as a cathode during discharge.

The second panel 20 includes a second substrate 21, an address electrode 22, a second dielectric layer 23, a partition 24, and a fluorescent layer 25.

The second substrate 21 may be made of a glass material like the first substrate 11.

A plurality of address electrodes 22 are formed on the second substrate 21 in a predetermined pattern, for example, in a stripe shape. The longitudinal direction of the address electrode 22 is formed to be substantially orthogonal to the longitudinal direction of the bus electrode 13.

The second dielectric layer 23 is formed on the second substrate 21 to include the address electrode 22.

The partition wall 24 partitioning the plurality of discharge cells 27 is formed on the second dielectric layer 23. As shown in FIG. 1, the partition wall 24 may be formed in a well shape.

In the discharge cell 27, a fluorescent layer 25 is formed on the side surface of the partition wall 24, and is composed of a red fluorescent layer, a green fluorescent layer, and a blue fluorescent layer.

In the plasma display panel 30 configured as described above, according to one aspect of the present invention, the first and second panels 10 and 20 are provided with positioning means 36. As can be seen in Figures 1 and 2, the positioning means 36 is provided with a concave-convex portion 16 formed in the first panel 10 and a concave portion 26 formed in the second panel 20. Can be.

Here, the concave portion 26 is formed to extend in the x and y directions on the partition 24 of the second panel 20, and the concave and convex portion 16 is located at a position corresponding to the concave portion 26. Is formed. In this way, the positioning means 36 are formed in the x and y directions, thereby preventing misalignment in both directions.

1 and 2, the uneven parts 16 are formed on the protective layer 15, but the unprotected layer 15 is not formed, and the uneven parts 16 are formed on the first dielectric layer 14. After the uneven portion 16 is formed on the first dielectric layer 14, the protective layer 15 may be formed to cover the entire surface of the first panel 10 including the uneven portion 16. .

On the other hand, when the positioning means 36 is provided with a low brightness color, for example, black, luminance can be improved by reducing external light reflection, and contrast can be improved by preventing color bleeding.

The uneven portion 16 may be provided by, for example, placing a paste of graphite component on a screen on which a pattern is formed and applying it on the first panel 10 using a squeeze. Using such a simple coating method, the forming process of the uneven portion 16 can be easily made.

In addition, the uneven portion 16 may be provided using a photolithography method. That is, after the photoresist is applied onto the panel 10, the photoresist may be exposed and developed using a photomask, and the pattern of the uneven portion 16 may be provided through an etching process.

On the other hand, the concave portion 26 may be provided through the exposure and development process after coating the photosensitive partition material on the partition 24.

The panel 30 provided with the uneven portion 16 and the uneven portion 26 is mounted on the uneven portion 26 so that the uneven portion 16 can be assembled.

 According to the plasma display panel 30 of the present invention, the positioning means 36 is provided so that the discharge portion 12 ′ of the discharge sustaining electrode 12 is connected to the discharge cell 27 as shown in FIG. 3. Alignment can be arranged in the center. In this way, the alignment can be made, so that the discharge can be stably executed.

In addition, since the positioning means 36 is provided, the assembly of the plasma display panel 30 can be easily performed, and an alignment mark, inspection equipment, inspection process, etc. for checking a separate alignment state are unnecessary.

In addition, when the positioning means 36, for example, the concave-convex portion 16 is provided with a color body having a low brightness, the external light reflection can be absorbed to improve the brightness, and the contrast can be improved.

Figure 4 shows another embodiment of the present invention. Referring to the drawings, the positioning means 36 is provided with an uneven portion 16 formed in the first panel 10 and a recessed portion 26 formed in the second panel 20. Here, the concave portion 26 is provided extending in the y direction, the concave and convex portion 16 is formed so as to correspond to the concave and convex portion 16 is seated on the concave portion 26, so that the plasma display panel 30 Alignment assembly is possible.

Although not shown in the drawings, the positioning means 36 of the present invention may have the uneven portions 16 and the indentations 26 formed on the second panel 20 and the first panel 10, respectively. Of course.

According to the heat dissipation sheet of the present invention and the plasma display device having the same configured as described above can achieve the following effects.

First, misalignment of the plasma display panel may be prevented, and thus, discharge failure or misdischarge may be prevented. According to the present invention, by providing the positioning means, precise assembly of the first panel and the second panel is possible. Therefore, erroneous discharge and discharge failure can be prevented.

Second, misalignment due to relative movement of the first panel and the second panel, which may occur during the assembly of the plasma display panel, may be prevented. In the positioning means of the present invention, for example, when the uneven part and the uneven part are provided, the uneven part is seated and coincided with the uneven part in the assembly process of the plasma display panel, thereby preventing relative movement of the first panel and the second panel. As a result, the problem of misalignment caused by this is structurally prevented.

Third, the brightness and contrast of the plasma display panel can be improved. When the positioning means of the present invention is provided with a low brightness color, external light absorption is improved, luminance is improved, and color bleeding between adjacent cells is prevented, and contrast can be improved.

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

Claims (4)

A first panel including a first substrate and a plurality of pairs of discharge sustaining electrodes formed on the first substrate; And A second panel including a second substrate spaced apart from the first substrate to form a discharge space, a plurality of address electrodes formed on the second substrate, and a partition wall partitioning the discharge space into a plurality of discharge cells; A plasma display panel comprising: a first panel and a second panel joined together; Aligning means for aligning the first panel and the second panel, characterized in that it further comprises a positioning means including a recess formed on the partition wall and the concave-convex portion formed to match the first panel portion corresponding to the partition wall Plasma display panel. delete The plasma display panel of claim 1, wherein the recessed portion is formed in at least a portion of the partition wall, and the recessed portion is formed at a position corresponding to the recessed portion. The plasma display panel of claim 1, wherein at least a part of the positioning means is provided in a color having low brightness.

Images