KR20060065758A - A plasma display panel - Google Patents

Abstract

The present invention relates to a counter-discharge type plasma display panel, wherein the plasma display panel according to the present invention is configured to arrange a black layer on the front substrate so as to increase the discharge efficiency and to improve the contrast. A first substrate and a second substrate, address electrodes formed side by side in one direction on the first substrate, a first barrier layer partitioning a plurality of discharge spaces adjacent to the first substrate, and adjacent to the second substrate The second partition wall partitioning the discharge space facing the discharge space, a phosphor layer formed inside the discharge cell partitioned by the two discharge spaces, and between the first partition layer and the second partition wall layer, the address The first electrode and the second electrode, which are electrically insulated from the electrode and formed in parallel along the direction crossing the electrode and disposed in pairs in each discharge cell, Claim is configured to correspond to the first electrode and the position of the second electrode including the first black layer formed on the second substrate.

Counter discharge, front panel, black layer, bulkhead

Description

Plasma Display Panel {A PLASMA DISPLAY PANEL}

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

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

3 is a partial cross-sectional view of a plasma display panel according to another embodiment of the present invention.

4 is a partial cross-sectional view of a plasma display panel according to another embodiment of the present invention.

5 is a partial cross-sectional view of a plasma display panel according to another embodiment of the present invention.

6 is a partial cross-sectional view of a plasma display panel according to another embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a counter-discharge type plasma display panel having high luminous efficiency and easy fabrication.

In general, a plasma display panel (hereinafter referred to as a 'PDP') realizes an image using visible light generated by a vacuum ultraviolet ray (VUV) emitted from a plasma obtained through gas discharge. It is a display element.

The PDP has a three-electrode surface discharge structure. The three-electrode surface discharge structure consists of a sealing structure of one substrate including two electrodes located on the same surface, and another substrate including address electrodes extending in a vertical direction spaced apart from the substrate by a predetermined distance therefrom. The PDP implements an address discharge that selects a discharge by a scan electrode connected to each line and independently controlled, and an address electrode opposite to the line, and then by the scan electrode located on the same plane and the sustain electrode opposite thereto. Implement sustain discharge to display luminance.

On the other hand, the three-electrode counter discharge type PDP is compared with this surface discharge type PDP. This counter discharge type PDP is similar to the surface discharge type PDP in the driving method, and is characterized in that a scanning electrode and a sustain electrode for sustain discharge are provided on opposite sides of the discharge cell.

However, the counter discharge type PDP has an advantage of increasing luminous efficiency because the scan electrode and the sustain electrode are disposed in the discharge cell in the opposite structure, thereby increasing the discharge length as much as possible, while the structure of the top plate is a conventional surface discharge type PDP Unlike the conventional method, since the electrode and the dielectric layer are not provided, it is necessary to provide the black layer in a manner different from that of installing the black layer on the dielectric layer in order to increase contrast.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a counter-discharge type plasma display panel in which a black layer is disposed on a front substrate so as to increase the discharge efficiency and improve the contrast. have.

According to an embodiment of the present invention, a plasma display panel includes a first substrate and a second substrate that are disposed to face each other, address electrodes formed to be parallel to the first substrate in one direction, and a plurality of discharge spaces adjacent to the first substrate. A first barrier layer, a second barrier layer adjacent to the second substrate, the discharge barrier facing the discharge space, a phosphor layer formed inside the discharge cell partitioned by the two discharge spaces, and the first barrier wall Between the layer and the second partition layer, the first electrode and the second electrode, the first electrode and the second electrode, which are electrically insulated from the address electrode and are formed side by side in a direction crossing the second electrode, and are disposed in pairs in each discharge cell. It includes a black layer formed on the second substrate corresponding to the position of.

When the first barrier layer and the second barrier layer are in a stripe shape extending in parallel with the address electrode, the black layer has a stripe pattern, and the black layer crosses the first barrier layer and the second barrier layer. Accordingly, the black layer may be formed on the fluorescent layer, and the black layer may be formed under the fluorescent layer in a direction crossing the first and second partition walls.

The width of the black layer may be the same as the thickness of the partition layer or may be formed differently.

The black layer according to another embodiment of the present invention includes a first partition member in which the first partition layer is arranged in a direction parallel to the address electrode, and a second partition member disposed in a direction crossing the address electrode. The first barrier layer may be applied to improve contrast between a closed type discharge cell including a first barrier member disposed in a direction parallel to the address electrode and a second barrier member disposed in a direction crossing the address electrode. In this case, the black layer forms a lattice pattern.

In a black layer according to another embodiment of the present invention, a non-discharge region is disposed in an area surrounded by horizontal and vertical axes passing through the center of each discharge cell, and each of the discharge cells is positioned along the address electrode direction. The width of the upper and lower ends may be applied in order to improve the contrast between the closed discharge cells that are narrower as the width of the upper and lower ends becomes farther from the center of the discharge cell. In this case, the black layer forms a honeycomb pattern.

On the other hand, according to another embodiment of the present invention, the first substrate and the second substrate that is disposed opposite, the address electrodes are formed side by side in one direction on the first substrate, and a plurality of adjacent to the first substrate A first partition wall partitioning a discharge space, a second partition wall partitioning a discharge space adjacent to the discharge space adjacent to the second substrate, and a discharge cell partitioned by the two discharge spaces. Between the phosphor layer, the first partition layer and the second partition layer, the first electrode and the second electrode formed in parallel along the direction crossing the address electrode while being electrically insulated from each other and arranged in pairs in each discharge cell; In addition, since the first and second barrier layers have a black-based color, contrast between discharge cells may be improved without a separate member and a separate process step.

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.

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

As shown, a PDP according to an embodiment of the present invention basically has a predetermined first substrate 10 (hereinafter referred to as a 'back substrate') and a second substrate 20 (hereinafter referred to as a 'front substrate'). The substrates are disposed to face each other, and a plurality of discharge cells 18 are partitioned by the partition walls 16 and 26 between the substrates 10 and 20. In the discharge cell 18, phosphor layers 19 and 29, which absorb ultraviolet rays and emit visible light, are formed along the partition walls and the bottom surfaces, and discharge gases (for example, xenon and neon) to cause plasma discharge. (Mixed gas containing Ne) and the like.

Address electrodes 12 are formed along one direction (y-axis direction of the drawing) on the opposite surface of the front substrate 20 of the back substrate 10, and cover the address electrodes 12 and the inner surface of the back substrate 10. The dielectric layer 14 is formed in its entirety. The address electrodes 12 are formed in parallel with each other while maintaining a predetermined distance from neighboring ones.

The partition wall is formed of a back plate partition wall 16 (or first partition layer) protruding toward the front substrate 20 adjacent to the rear substrate 10 and toward the rear substrate 10 adjacent to the front substrate 20. And a front plate partition wall 26 (or a second partition wall layer) formed to protrude.

The back plate partition 16 is formed over the dielectric layer 14 formed on the back substrate 10. In the present embodiment, the back plate partition 16 is arranged in a direction parallel to the address electrode 12. And a second partition wall member 16b formed to intersect the member 16a and the first partition wall member 16a and partition each discharge cell 18 into an independent discharge space. The front plate partition wall 26 may include a third partition member 26a having a shape corresponding to the first partition member 16a and a fourth partition member having a shape corresponding to the second partition member 16b. 26b). Accordingly, the third partition wall member 26a and the fourth partition wall member 26b are formed in the direction crossing each other to form a region 28 corresponding to each discharge cell 18 on the front substrate 20.

Meanwhile, between the rear substrate 10 and the front substrate 20, corresponding to the second partition members 16b constituting each discharge cell 18 along the parallel direction (x-axis direction in the drawing). The first electrode 31 and the second electrode 32 are formed to extend in length. In the present exemplary embodiment, the first electrode 31 and the second electrode 32 correspond to each of the second partition member 16b and are disposed to pass over the second partition member 16b. 12) may be a reference for distinguishing neighboring discharge cells 18 in a direction parallel to the y-axis direction of the drawing. In addition, the first electrode 31 and the second electrode 32 are formed to pass through the inside of the discharge cell 18 across the first partition member 16a.

At this time, the second electrode 32 plays a role of selecting the discharge cells 18 to be turned on by participating in the discharge of the address section together with the address electrode 12, and the first electrode 31 is the second electrode ( 32) and plays a role in displaying the screen by participating in the discharge of the maintenance section. However, since the electrodes may have different roles depending on the signal voltage applied thereto, the present invention does not need to be limited to the above.

In addition, the black layer which can improve the contrast by clarifying the outline of the discharge cells 18 and the adjacent discharge cells 18 partitioned in this way and blocking external light without blocking the light emitted from the discharge cells 18. 27 is formed on the front substrate 20. In the present embodiment, the black layer 27 is formed to intersect the first black layer 27a arranged in a direction parallel to the address electrode 12 and the first black layer 27a, and each discharge cell ( And a second black layer 27b partitioning 18 into independent discharge spaces. In this case, the first black layer 27a is disposed on a position corresponding to the first and third partition members 16a and 26a on the front substrate 20, and the second black layer 27b is disposed on the front substrate 20. The front substrate 20 is disposed at positions corresponding to the second and fourth partition members 16b and 26b to form a grid shape that intersects each other. Therefore, the black layer 27 of the lattice pattern corresponding to the first partition layer 16 and the second partition layer 26 does not block light generated from the discharge cells 18 to maximize the luminous efficiency. In addition, since the contrast can be improved by blocking external light, the sharpness of the image can be improved.

On the other hand, as shown in FIG. 2, the width D of the black layer 27 may be formed in the same manner as the lower width d of the second partition wall layer 26, but as shown in FIG. 3. Similarly, the width D of the black layer 27 may be formed differently from the lower width d of the second partition wall layer 26. At this time, in the case where the width D of the black layer 27 is made larger than the lower width d of the second partition wall layer 26, the contour of the discharge cell is made larger and the external light is blocked to further contrast. Can improve.

In another embodiment of the present invention shown in FIG. 4, the contour between the discharge cells is made larger by making the second partition layer 26 black with a black pigment or the like without separately manufacturing such a black layer 27. FIG. And contrast can be improved by blocking external light.

In the black layer according to the exemplary embodiment of the present invention illustrated in FIGS. 1 to 4, a non-discharge region is disposed in an area surrounded by horizontal and vertical axes passing through the center of each discharge cell 18. The discharge cells may be applied to improve the contrast between the closed discharge cells that are narrower as the widths of the upper and lower ends positioned along the address electrode direction move away from the center of the discharge cells, wherein the black layer is hexagonal or elliptical. It is also possible to form a continuous pattern of.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS. 5 and 6. 5 and 6 are partial cross-sectional views of a plasma display panel according to another embodiment of the present invention. This embodiment is the same as or similar to the embodiment of Figures 1 to 4 the overall configuration and operation effects will be omitted here will be described in detail different from the description of the same and similar parts.

5 and 6, the first partition wall layer 16 and the second partition partitioning the plurality of discharge spaces 18 adjacent to the first substrate 10 are compared with those of the above-described embodiment. A second partition wall layer 26 is formed in a stripe shape in a direction parallel to the address electrode 12 to define the discharge space 28 which is adjacent to the substrate 20 and faces the discharge space 18.

Between the first barrier layer 16 and the second barrier layer 26, surrounded by the address electrode 12 and the dielectric layer 36 and electrically insulated from each other along the direction crossing the first electrode 31. The second electrode 32 is formed to partition the discharge cell.

In this case, the black layers 27 are arranged side by side in a direction crossing the directions of the address electrodes 12 to correspond to the first electrodes 31 and the second electrodes 32 so as to clarify the contour of the discharge cells and improve the contrast. You can. Meanwhile, as shown in FIG. 5, the black layer 27 has a phosphor on top of the second partition wall layer 26 in a direction crossing the first partition layer 16 and the second partition wall layer 26. After the layer 29 is formed, it may be formed on the phosphor layer 29. As shown in FIG. 6, the black layer is first formed on the second barrier layer 26, and then the phosphor layer 29 is formed. You may apply it.

By disposing the black layer 27 overlapping the phosphor layer 29, the black layer 27 may further improve contrast by further blocking external light transmitted through the phosphor layer 29.

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. It goes without saying that it belongs to the scope of the present invention.

As described above, according to the plasma display panel according to the present invention, not only can the discharge efficiency be increased by using the opposite discharge type plasma display panel in which the sustain electrode and the scan electrode face each other, but also increase the discharge distance. The contrast of the discharge cell formed by the sustain electrode, the scan electrode, and the address electrode crossing the same can be made clear, and the black layer which can block external light can be improved.

In addition, according to the present invention, it is possible to provide a plasma display panel having excellent luminous efficiency and contrast, and having a clear image quality.

Claims (16)

A first substrate and a second substrate disposed to face each other; Address electrodes formed on the first substrate in parallel with one direction; A first barrier rib layer partitioning a plurality of discharge spaces adjacent to the first substrate; A second partition wall layer adjacent to the second substrate and partitioning a discharge space facing the discharge space; A phosphor layer formed inside the discharge cells partitioned by the two discharge spaces; A first electrode and a second electrode between the first barrier layer and the second barrier layer, which are electrically insulated from the address electrode and formed in parallel with each other and arranged in pairs in each discharge cell; And a black layer formed on the second substrate corresponding to the positions of the first electrode and the second electrode. The method of claim 1, A plasma display having a stripe shape in which the first and second partition walls extend in a direction parallel to the address electrode, and the black layer being a stripe pattern formed in a direction crossing the first and second partition walls; panel. The method of claim 2, And a black layer formed on the fluorescent layer in a direction crossing the first and second partition walls. The method of claim 2, And the black layer is formed under the fluorescent layer in a direction crossing the first and second partition walls. The method of claim 1, The first partition layer includes a first partition member disposed in a direction parallel to the address electrode, and a second partition member disposed in a direction crossing the address electrode, wherein the first partition layer is parallel to the address electrode. A third partition member disposed in a direction, and a fourth partition member disposed in a direction crossing the address electrode, wherein the black layer includes a first black layer corresponding to the first and third partition members; A plasma display panel having a lattice shape in which a second black layer corresponding to the second and fourth partition members intersects. The method of claim 5, And a black layer formed on the fluorescent layer in a direction crossing the first and second partition walls. The method of claim 5, And the black layer is formed under the fluorescent layer in a direction crossing the first and second partition walls. The method of claim 5, And the black layer has a width equal to a width of a bottom of the second partition wall layer. The method of claim 5, And a width different from that of the bottom of the second partition wall layer. The method of claim 1, A non-discharge region is disposed in an area surrounded by horizontal and vertical axes passing through the centers of the respective discharge cells, and each of the discharge cells has a width at the upper and lower ends positioned along the address electrode direction away from the center of the discharge cell. And the black layer is formed in a hexagonal column or an elliptical continuous pattern corresponding to the periphery of each discharge cell. The method of claim 10, And a top and bottom ends of the discharge cells having a trapezoidal shape. The method of claim 10, And the black layer has a width equal to a width of a bottom of the second partition wall layer. The method of claim 10, And a black layer formed on the fluorescent layer in a direction crossing the first and second partition walls. The method of claim 10, And the black layer is formed under the fluorescent layer in a direction crossing the first and second partition walls. The method of claim 10, And a width different from that of the bottom of the second partition wall layer. A first substrate and a second substrate disposed to face each other; Address electrodes formed on the first substrate in parallel with one direction; A first barrier rib layer partitioning a plurality of discharge spaces adjacent to the first substrate; A second partition wall layer adjacent to the second substrate and partitioning a discharge space facing the discharge space; A phosphor layer formed inside the discharge cells partitioned by the two discharge spaces; A first electrode and a second electrode formed between the first partition layer and the second partition layer in parallel with each other while being electrically insulated from the address electrode, and arranged in pairs in each discharge cell; And the second barrier layer is formed of a black dielectric material capable of blocking visible light.

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