KR20070016710A - Plasma Display Apparatus - Google Patents

Abstract

The present invention relates to a plasma display panel having an improved structure of a horizontal partition wall for partitioning discharge cells coated with phosphors of the same color on a plasma display panel, wherein at least one depression is formed on the horizontal partition wall. By reducing the overall capacitance (C) of the panel, thereby increasing the driving efficiency of the panel, and also improve the exhaust characteristics, and prevent the mixing of phosphors of different colors to generate cross talk when driving the panel. Has the effect of suppressing

The plasma display apparatus of the present invention includes a horizontal partition wall and a vertical partition wall intersecting the horizontal partition wall to form a discharge cell, and the recess and the phosphor layer formed on the horizontal partition wall.

In addition, a horizontal bulkhead and a plurality of vertical bulkheads intersecting the horizontal bulkheads to form discharge cells, the horizontal bulkheads partition two adjacent discharge cells coated with the same phosphor among the plurality of discharge cells, and on the horizontal bulkhead The exhaust channel formed in the advancing direction of the horizontal partition wall is characterized in that the one or more differential partitions having a height different from the horizontal partition wall is formed to cross the exhaust channel.

Description

Plasma Display Apparatus {Plasma Display Apparatus}

1 is a perspective view showing the structure of a typical plasma display panel.

2 is a plan view for explaining the structure of a partition wall for partitioning a discharge cell in a conventional plasma display panel.

3A to 3B are diagrams for explaining a problem in applying a phosphor in a partition structure of a conventional plasma display panel.

4 is a view for explaining an example of a structure in which an exhaust channel is formed on a horizontal partition wall in a conventional plasma display panel.

5 is a plan view for explaining the structure of a plasma display panel according to a first embodiment of the present invention;

6 is a cross-sectional view for explaining in detail the shape of the depression formed on the horizontal partition wall of FIG.

7A to 7B are plan views illustrating the structure of a plasma display panel according to a second embodiment of the present invention.

FIG. 8 is a cross-sectional view for describing a shape of a depression formed on the horizontal partition wall of FIG. 7A in more detail. FIG.

9 is a plan view for explaining the structure of a plasma display panel according to a third embodiment of the present invention;

10 is a view for explaining in detail the shape of the differential partition formed in the exhaust channel formed on the horizontal partition of Figure 9;

11 is a plan view for explaining the structure of a plasma display panel according to a fourth embodiment of the present invention;

12 is a view for explaining the shape of the groove formed in the exhaust channel formed on the horizontal partition wall of Figure 11 in more detail.

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

400, 500: Vertical bulkhead 401, 501: Horizontal bulkhead

402, 502: red (R) discharge cell 403, 503: green (G) discharge cell

404, 504: Blue (B) discharge cell 405, 505: depression

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 device having an improved structure of a horizontal partition wall for partitioning discharge cells coated with phosphors having the same color on a plasma display panel.

In general, a plasma display panel is a partition wall formed between a front panel and a rear panel to form one unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He). An inert gas containing a main discharge gas such as and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 illustrates a structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front panel in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are arranged on a front glass 101 that is a display surface on which an image is displayed. The rear panel 110 on which the plurality of address electrodes 113 are arranged so as to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front panel 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. The scan electrode 102 and the sustain electrode 103 are covered by one or more upper dielectric layers 104 that limit the discharge current and insulate the electrode pairs, and to facilitate the discharge conditions on the upper dielectric layer 104 top surface. A protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear panel 110 is arranged such that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 for performing address discharge to generate vacuum ultraviolet rays are disposed in parallel with the partition wall 112. On the upper side of the rear panel 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

A structure of a partition wall for partitioning a discharge cell in a general plasma display panel having such a structure will be described with reference to FIG. 2.

2 is a view for explaining the structure of the partition wall for partitioning the discharge cells in the conventional plasma display panel.

Referring to FIG. 2, a structure of a partition wall for partitioning a discharge cell of a well type described above is shown in the structure of a partition wall for partitioning a discharge cell in a conventional plasma display panel.

Here, the vertical partition wall 200 partitions discharge cells coated with different phosphors. For example, as shown in FIG. 2, the red discharge cell 202 and the green discharge cell 203 are partitioned, and the green (G) discharge cell 203 and the blue discharge cell ( 204).

In addition, the horizontal partition wall 201 partitions discharge cells coated with the same phosphor. For example, the red discharge cells of 202 are partitioned.

In the well-type barrier rib structure, a horizontal barrier rib is further added to partition discharge cells coated with the same phosphor, and adjacent discharge cells coated with the same phosphor are compared with the stripe type in which only vertical barrier ribs are formed. Effectively prevents crosstalk.

However, in the well type barrier rib structure, each discharge cell is closed as compared with the stripe barrier rib structure, and thus there is a problem in that the exhaust characteristics during the exhaust process are deteriorated.

In addition, in the well type barrier rib structure, some phosphors are applied on the horizontal barrier rib 201 when the phosphor is applied. In addition, the phosphor coated on the horizontal partition wall 201 emits light when the plasma display panel is driven to affect the image expression. This will be described with reference to FIGS. 3A to 3B.

3A to 3B are diagrams for explaining a problem when applying a phosphor in a barrier rib structure of a conventional plasma display panel.

First, referring to FIG. 3A, the red (R) discharge cells 202, the green (G) discharge cells 203, and the blue (B) discharge cells are arranged side by side to be red (R) discharge cells 202. When the (R) phosphor is applied, a part of the red (R) phosphor is applied to the horizontal partition wall 201 formed to cross the application direction of the phosphor, and the green (G) phosphor is applied to the green (G) discharge cell 203. In the case of coating, a part of the green (G) phosphor is applied to the horizontal partition wall 201 formed to intersect the application direction of the phosphor, and the blue (B) phosphor is applied to the blue (B) discharge cell 204. Partial blue (B) phosphor is applied to the horizontal partition wall 201 formed to cross the application direction.

An example in which some phosphors are applied on the horizontal partition wall 201 will be described below with reference to FIG. 3B.

Referring to FIG. 3B, when a predetermined phosphor, for example, a red (R), green (G), and blue (B) phosphor, is applied to one discharge cell partitioned by the horizontal partition wall 201, the viscous phosphor is formed on the upper horizontal partition wall. It is applied and left.

Accordingly, phosphors of different colors remaining on the upper side of the horizontal partition wall 201 are mixed at the upper side of the horizontal partition wall, so that light of an unwanted color is generated and the image quality deteriorates. For example, red (R) light is generated in all of the red (R) discharge cells at 202 when the plasma display panel is driven. As described above, red (R), green (G), and blue (B) phosphors are used. Is mixed on the upper side of the horizontal bulkhead 201, the unwanted red (R) light and green (not the pure red (R) light at the position on the horizontal bulkhead 201 between the red (R) discharge cells of reference numeral 202 described above. The generation of light of color in which G) light and blue (B) light are mixed causes a problem of deterioration of image quality such as blurring of image quality.

In addition, in order to improve exhaust characteristics that are problematic in the well-type partition wall structure described above, an exhaust channel for exhaust is formed on the horizontal partition wall. Looking at it as shown in FIG.

4 is a view for explaining an example of a structure in which an exhaust channel is formed on a horizontal partition wall in a conventional plasma display panel.

Referring to FIG. 4, an exhaust channel 305 for exhausting gas in a traveling direction of the horizontal partition wall 301 on the horizontal partition wall 301 for partitioning between adjacent discharge cells coated with the same phosphor in the partition structure of the plasma display panel. Is formed.

Accordingly, the capacitance C of the entire plasma display panel is reduced to reduce the magnitude of the discharge current, thereby increasing the driving efficiency of the panel. In addition, the exhaust efficiency of the impurity gas in the discharge cells of the plasma display panel is discharged and the exhaust gas for injecting the discharge gas is increased.

Meanwhile, in the structure in which the exhaust channel 305 is formed on the horizontal partition wall 301 as described above, some phosphors are applied to the exhaust channel 305 when the phosphor is applied. In addition, the phosphor coated on the exhaust channel 305 emits light when the plasma display panel is driven to affect the image expression.

That is, predetermined phosphors, for example, red (R), green (G), and blue (B) phosphors, are applied to the exhaust channel 305 into the exhaust channel 305 recessed in the central portion of the horizontal partition wall 301. .

Accordingly, red (R), green (G), and blue (B) phosphors are all applied to the exhaust channel 305. Since the exhaust channel 305 is open in the advancing direction, the above-mentioned red color is applied. (R), green (G), and blue (B) phosphors are mixed in the exhaust channel 305.

Meanwhile, the driving voltage when driving the plasma display panel also affects some of the phosphors applied in the exhaust channel 305. Accordingly, as described above, light of an unwanted color is generated on the exhaust channel 305 in which red (R), green (G), and blue (B) phosphors are mixed.

In order to solve this problem, an object of the present invention is to provide a plasma display apparatus which prevents deterioration of image quality when driving a plasma display panel by improving a structure of a horizontal partition wall.

Plasma display device of the present invention for achieving the above object comprises a horizontal partition wall, and a vertical partition wall to form a discharge cell intersecting the horizontal partition wall, and includes a recess formed on the horizontal partition wall and the phosphor layer formed in the depression. It is characterized by.

At this time, at least one depression is formed on the horizontal partition, characterized in that formed on the horizontal partition of the position corresponding to the discharge cell.

Such, the width of the depression is preferably 20㎛ or more less than the maximum transverse length of one discharge cell, the cross section is characterized in that it has a shape of any one of polygonal or more than triangular shape or curvature.

The discharge cell is characterized in that it has a shape of any one of a polygonal shape or a shape having a curvature or more.

Here, the thickness of the horizontal bulkhead is 50 μm or more and 100 μm or less, characterized in that more than 100% and 200% or less than the vertical bulkhead.

The height of the horizontal bulkhead is 100 µm or more and 1 mm or less.

The depth of the depression is preferably 50 µm or more and 500 µm or less, and is 50% of the maximum height of the horizontal partition wall.

At this time, the phosphor layer is characterized in that it is applied to the entire surface of the depression.

In addition, the plasma display device of the present invention for achieving the above object in another aspect of the present invention includes a horizontal partition wall and a vertical partition wall to form a discharge cell to cross the horizontal partition wall, wherein the horizontal partition wall of the plurality of discharge cells Two adjacent discharge cells coated with the same phosphor are partitioned, and in the exhaust channel formed in the advancing direction of the horizontal partition on the horizontal partition, at least one differential partition having a height different from the horizontal partition is formed to cross the exhaust channel. do.

In this case, the differential partition wall is preferably formed to be 0.2 times or more and 0.7 times or less of the height of the horizontal partition wall lower than the horizontal partition wall.

In addition, a plurality of differential partitions are formed in one exhaust channel, and the distance between two consecutive differential partitions among the plurality of differential partitions is the same.

In addition, a plurality of differential partitions are formed in one exhaust channel, and the plurality of differential partitions are each formed at positions corresponding to vertical partitions on the exhaust channel.

In addition, a groove is formed in the exhaust channel in the direction of two adjacent discharge cells coated with the same phosphor, and the width of the groove is preferably 1/3 or less of the width of one discharge cell corresponding to the exhaust channel.

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

5 is a plan view illustrating a structure of a plasma display panel according to a first embodiment of the present invention.

Referring to FIG. 5, a well type barrier rib structure for dividing a discharge cell in a plasma display panel of the present invention is shown.

The plasma display panel of the present invention includes a plurality of horizontal partition walls 401 and a plurality of vertical partition walls 400 that cross the horizontal partition walls 401 to form a plurality of discharge cells 402, 403, and 404. . Here, the aforementioned horizontal partition wall 401 partitions two adjacent discharge cells to which phosphors of the same color are applied among the plurality of discharge cells. For example, the red discharge cells of 402 are divided.

Here, a plurality of recesses 405 are formed on the horizontal partition wall 401 corresponding to the discharge cells in order to improve the exhaust characteristics and to prevent the mixing of the phosphors, and the depth of the recesses 405 is the discharge cell ( It is preferred to be formed deeper than the depth of 402, 403, 404.

Accordingly, the width of the recess is formed to be 20 µm or more and one discharge cell maximum transverse length.

Moreover, the thickness of a horizontal bulkhead is 50 micrometers or more and 100 micrometers or less, It is preferable that it is more than 100% and 200% or less with respect to a vertical bulkhead, The height is 100 micrometers or more and 1 mm or less.

Here, the vertical partition wall 400 partitions discharge cells coated with phosphors of different colors. For example, as shown in FIG. 5, the red discharge cell 402 and the green discharge cell 403 are partitioned, and the green (G) discharge cell 403 and the blue discharge cell ( 404).

In addition, a plurality of such recesses 405 are formed in one horizontal partition wall 401, and the plurality of recesses 405 are formed on one horizontal partition wall 401 at a position corresponding to one discharge cell. It is formed into a groove. At this time, the groove of the depression 405 formed corresponding to one discharge cell is preferably formed to be lower than the depth of the discharge cell, the cross-sectional shape of the groove of any one of the polygon or triangle shape or more It has a shape.

Accordingly, when the phosphor is applied, the phosphor 410 partially applied on the horizontal partition wall 401 is introduced into the depression 405 such that the phosphor 410 remaining does not exist.

6 is a view for explaining in detail the shape of the depression formed on the horizontal partition wall of FIG.

Referring to FIG. 6, FIG. 6 is a cross-sectional view taken along line II ′ of FIG. 5, wherein the depression 405 formed on the horizontal partition wall is coated with the phosphor 410 having the same color at the center of the horizontal partition wall 401. Recessed to a predetermined depth corresponding to two adjacent discharge cells. At this time, the width of the depression 405 corresponding to each discharge cell is preferably formed to be the same width or smaller than the maximum horizontal length of one discharge cell.

In addition, the depression depth of the depression 405 is preferably formed to be lower than the depth of the discharge cell to which the phosphor 410 is applied.

Thus, when the phosphor 410 of red (R) is applied in the same direction as the vertical partition 400, the phosphor (410) of the red (R) that is partly applied on the horizontal partition 401 is a phosphor of the same color It is introduced into the depression 405 formed on the horizontal partition wall that partitions the discharge cells of two adjacent red (R) to be applied so as not to remain on the horizontal partition wall 401.

7A to 7B are plan views illustrating the structure of a plasma display panel according to a second embodiment of the present invention.

Referring to FIGS. 7A and 7B, a well type barrier rib structure for dividing a discharge cell in a plasma display panel of the present invention is shown .

The plasma display panel of the present invention includes a plurality of horizontal partition walls 501 and a plurality of vertical partition walls 500 that cross the horizontal partition walls 501 to form a plurality of discharge cells 502, 503, and 504. . The above-described horizontal partition wall 501 divides two adjacent discharge cells to which phosphors of the same color are applied among the plurality of discharge cells. For example, the red discharge cells of 502 are partitioned.

Here, a plurality of recesses 505 are formed on the horizontal partition wall 501 corresponding to the discharge cells in order to improve the exhaust characteristics and to prevent mixing of the phosphors, and the depth of the recesses 505 is applied by the phosphor. It is desirable to form a depth less than the depth of the discharge cells (502, 503, 504).

Moreover, the thickness of a horizontal bulkhead is 50 micrometers or more and 100 micrometers or less, It is preferable that it is more than 100% and 200% or less with respect to a vertical bulkhead, The height is 100 micrometers or more and 1 mm or less.

The width of the recess 505 is preferably formed to be 20 μm or more, and a plurality of grooves are formed on the horizontal partition wall 501 at a position corresponding to one discharge cell.

Here, the vertical partition wall 500 partitions discharge cells coated with phosphors of different colors. For example, as shown in FIGS. 6A and 6B, the red discharge cell 502 and the green discharge cell 503 are partitioned, and the green (G) discharge cell 503 and the blue discharge are discharged. The cell 504 is partitioned.

In addition, the depression 505 is formed in plural in one horizontal partition 501, the plurality of depressions 505 has a variety of shapes on the horizontal partition 501 corresponding to one discharge cell. It is formed of a plurality of grooves.

As described above, the depression 505 formed of a plurality of grooves on the horizontal partition wall 501 is regularly formed with a predetermined number on the horizontal partition wall 501 as shown in FIG. 6A, or the horizontal partition wall 501 as shown in FIG. 6B. It can be formed irregularly with various numbers corresponding to one discharge cell on the).

At this time, the plurality of depressions 505 formed corresponding to one discharge cell is preferably formed to be deeper than the depth of the discharge cells (50, 503, 504).

Here, the groove shape of the depression 505 which is formed in plural in correspondence to two adjacent discharge cells having the same color phosphor coated on the horizontal partition wall 501 may be any one of a polygon having a triangular shape or more and a curvature. Has

Accordingly, when the phosphor is applied, the phosphor 510 partially applied on the horizontal partition wall 501 flows into the plurality of recesses 505 and does not remain on the horizontal partition wall 501.

8 is a view for explaining the shape of the depression formed on the horizontal partition wall of Figure 7a in more detail.

Referring to FIG. 8, FIG. 8 is a cross-sectional view of II-II ′ of FIG. 7A, wherein the depression 505 formed on the horizontal partition wall 501 is formed on the horizontal partition wall 501 at a position corresponding to the discharge cell. A plurality of grooves are formed by recessing to a predetermined depth.

At this time, the groove width of the recessed portion 505 formed of a plurality of grooves corresponding to one discharge cell is preferably formed to be 20㎛ or more.

At this time, the width of the depression 505 formed of a plurality of grooves is preferably formed to be equal to or smaller than the maximum horizontal length of one discharge cell.

In addition, the depression depth of the depression 505 is formed to be less deep than the depth of the discharge cell to which the phosphor 510 is applied.

Therefore, when the red phosphor R 510 is applied in the same direction as the vertical partition wall 500, the red phosphor R 510 applied on the horizontal partition wall 501 is the phosphor 510 of the same color. ) Is introduced into a plurality of recesses 505 formed between two adjacent red (R) discharge cells to be applied so as not to remain on the horizontal partition wall 501.

As described above, the depression 505 is formed on the horizontal partition wall 501 corresponding to the discharge cell so that the phosphor 510 partially applied on the horizontal partition wall flows into the depression 505 when the phosphor is applied. There is no phosphor remaining on the upper portion 501 to prevent mixing of the phosphor 510, thereby suppressing cross talk.

In addition, the structure of the horizontal partition wall 501 having such a structure may discharge the impurity gas in the discharge cell of the plasma display panel and increase the exhaust efficiency during the exhaust process for injecting the discharge gas.

In addition, in the embodiments for describing the present invention, the shape of the discharge cell is described as a general quadrangular shape. However, the present invention may be applied to a well type partition structure having a triangular shape or polygonal shape or curvature.

On the other hand, when the exhaust channel is formed on the horizontal partition wall in the well type partition wall structure for partitioning the discharge cells in the plasma display panel according to the third embodiment of the present invention, the partition wall structure for preventing the mixing of the phosphor in the exhaust channel Looking at it as shown in FIG.

Referring to FIG. 9, a structure of a well type barrier rib for dividing a discharge cell in a plasma display panel of the present invention is shown.

The plasma display panel of the present invention includes a plurality of horizontal partition walls 601 and a plurality of vertical partition walls 600 that cross the horizontal partition walls 601 to form a plurality of discharge cells 602, 603, and 604. do. The above-described horizontal partition wall 601 partitions two adjacent discharge cells to which the same phosphor is applied among the plurality of discharge cells. For example, the red discharge cells of 602 are partitioned.

Here, the exhaust channel 605 is formed in the traveling direction of the horizontal partition wall 601 in order to improve the exhaust characteristics and reduce the magnitude of the discharge current on the horizontal partition wall 601 described above. One or more differential partitions 606a, 606b, 606c, 606d different in height from the partition 601 are formed to cross the exhaust channel 605 described above.

The differential partitions 606a, 606b, 606c, and 606d are formed in plural in one exhaust channel 605, and the gap between two successive differential partitions among the plurality of differential partitions 606a, 606b, 606c, and 606d. It is preferable that all are formed the same. For example, the distance between the differential partition of 606a and the differential partition of 606b and the differential partition of 606b and the differential partition of 606c are the same. In addition, the space | interval between the differential bulkhead of 606b and the differential partition of 606c, and the space | interval between the differential partition of 606c and the differential partition of 606d are also the same.

As such, the reason for keeping the distance between the differential partitions 606a, 606b, 606c, and 606d constant is that the size of the region on the exhaust channel 605 partitioned by each of the differential partitions 606a, 606b, 606c, and 606d is the same. To do that.

Here, more preferably, the differential partitions 606a, 606b, 606c, and 606d are formed in plural in one exhaust channel 605, and the plurality of differential partitions 606a, 606b, 606c, and 606d are exhaust channels. It is formed on the position corresponding to the vertical partition 600 on the 605, respectively. That is, the differential partitions 606a, 606b, 606c, and 606d are formed at positions on the exhaust channel 605 on the extension line of the vertical partition wall 600. Accordingly, the same phosphor as that of the corresponding discharge cell is applied to the position on the exhaust channel 605 partitioned by the differential partitions 606a, 606b, 606c, and 606d.

As such, the shapes of the differential partitions 606a, 606b, 606c, and 606d formed in the exhaust channel 605 will be described in more detail with reference to FIG. 10.

FIG. 10 is a view for explaining the shape of the differential partition formed in the exhaust channel formed on the horizontal partition of FIG. 9 in more detail.

Referring to FIG. 10, for example, the differential partitions 606a, 606b, 606c, and 606d formed in the exhaust channel 605 in region A of FIG. 9 are recessed to a predetermined depth in the center of the horizontal partition wall 601 to exhaust the exhaust gas. It is formed across the channel 605. In addition, the height of the differential partitions 606a, 606b, 606c, 606d is preferably formed to be 0.2 times or more and 0.7 times less than the height of the horizontal partition 601, unlike the height of the horizontal partition 601.

As such, the central portion of the horizontal partition wall 601 is recessed to form the exhaust channel 605, thereby reducing the capacitance C of the entire plasma display panel, thereby reducing the magnitude of the discharge current, thereby increasing the driving efficiency of the panel.

In addition, the height of the differential partition wall formed in the exhaust channel 605 is lower than the height of the horizontal partition wall 601 described above, thereby preventing deterioration of the exhaust characteristics. Therefore, the exhaust efficiency of the impurity gas in the discharge cell of the plasma display panel is discharged and the exhaust gas for injecting the discharge gas is increased.

In addition, when the phosphor is applied, some phosphors are applied to the above-described exhaust channel 605. When the phosphor is applied, the differential partition walls 606a, 606b, 606c, and 606d prevent cross talk, thereby preventing cross talk. Will be prevented.

11 is a plan view illustrating a structure of a plasma display panel according to a fourth embodiment of the present invention.

The plasma display panel of the present invention includes a plurality of horizontal partition walls 701 and a plurality of vertical partition walls 700 that cross the horizontal partition walls 701 to form a plurality of discharge cells 702, 703, and 704. . The above-described horizontal partition wall 701 divides two adjacent discharge cells to which the same phosphor is applied among the plurality of discharge cells. For example, the red discharge cells of 702 are partitioned.

Here, the exhaust channel 705 is formed in the advancing direction of the horizontal partition wall 701 in order to improve the exhaust characteristics and reduce the magnitude of the discharge current on the horizontal partition wall 701 described above. One or more grooves 706a and 706b different in depth from the exhaust channel are formed to intersect the exhaust channel 705 described above corresponding to two adjacent discharge cells .

Here, the vertical partition wall 700 partitions discharge cells coated with different phosphors. For example, as shown in FIG. 11, the red discharge cell 702 and the green discharge cell 703 are partitioned, and the green (G) discharge cell 703 and the blue discharge cell ( 704).

In addition, a plurality of such grooves 706a and 706b are formed in one exhaust channel 705, and the plurality of grooves 706a and 706b have a width equal to 1 / the width of one discharge cell corresponding to the exhaust channel. It is preferable that it is three or less.

Thus, the reason for limiting the width between the grooves 706a and 706b is to prevent the mixing of phosphors between adjacent cells. The area on the horizontal partition wall 701 in which the grooves 706a and 706b are formed will be more clearly explained in the following description of the method of applying the phosphor.

As such, the shapes of the grooves 706a and 706b formed in the exhaust channel 705 will be described in more detail with reference to FIG. 12.

12 is a view for explaining the shape of the groove formed in the exhaust channel formed on the horizontal partition wall of Figure 11 in more detail.

First, referring to FIG. 12, for example, the grooves 706a and 706b formed in the exhaust channel 705 in the region B of FIG. 11 are recessed to a predetermined depth in the center of the horizontal partition wall 701 and formed in the exhaust channel 705. Are formed to cross two adjacent cells. In addition, the depth of these grooves 706a and 706b is formed differently from the depth of the exhaust channel 705.

As such, the central portion of the horizontal partition wall 701 is recessed to form the exhaust channel 705, thereby reducing the capacitance C of the entire plasma display panel and reducing the magnitude of the discharge current, thereby increasing the driving efficiency of the panel.

In addition, since the depths of the grooves 706a and 706b formed in the exhaust channel 705 are less than the depth of the exhaust channel 705 described above, the mold and body are prevented from mixing and the degradation of the exhaust characteristics is prevented. Therefore, the exhaust efficiency of the impurity gas in the discharge cell of the plasma display panel is discharged and the exhaust gas for injecting the discharge gas is increased.

In addition, in the barrier rib structure of the plasma display panel of the present invention, when the phosphor is applied, some phosphors are applied to the above-described exhaust channel 705 and the grooves 706a and 706b and cross by the phosphor remaining on the horizontal barrier rib 701. Cross talk can be prevented from occurring.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described in detail above, the present invention provides a plurality of depressions on the horizontal partition wall, thereby improving exhaust characteristics and preventing the mixing of different phosphors on the horizontal partition wall to prevent cross talk during driving of the panel. It has a suppressing effect.

In addition, when the exhaust channel is formed on the horizontal partition wall, grooves are formed in two adjacent discharge cell directions in which the same phosphor is applied to the exhaust channel, or by forming a differential partition wall having a height lower than that of the horizontal partition wall described above in the exhaust channel, The total capacitance C of the panel is reduced to reduce the magnitude of the discharge current. As a result, the driving efficiency of the plasma display panel can be improved. In addition, as described above, it is possible to improve the exhaust characteristics and to prevent the mixing of different phosphors to suppress the generation of cross talk when driving the panel.

Claims (19)

With transverse bulkheads, A vertical partition wall intersecting with the horizontal partition wall to form a discharge cell, A depression formed on the horizontal partition wall; And And a phosphor layer formed on the depression. The method of claim 1, And at least one recess is formed on the horizontal partition wall. The method of claim 1, And the depression is formed on a horizontal partition wall at a position corresponding to the discharge cell. The method of claim 3, wherein And the width of the recess is equal to or greater than 20 μm and equal to or less than the maximum horizontal length of one discharge cell. The method of claim 1, And a cross section of the recessed portion has any one of a polygonal shape having a triangular shape or more and a curvature. The method of claim 1, The discharge cell has a shape of any one of a polygonal shape or a shape having a curvature or more. The method of claim 1, And the thickness of the horizontal partition wall is 50 µm or more and 100 µm or less. The method of claim 1, And the thickness of the horizontal partition wall is greater than 100% and less than or equal to 200% of the vertical partition wall. The method of claim 1, And a height of the horizontal partition wall is 100 µm or more and 1 mm or less. The method of claim 1, And a depth of the depression is 50 µm or more and 500 µm or less. The method of claim 1, And the depth of the depression is 50% of the maximum height of the horizontal partition wall. The method of claim 1, And the phosphor layer is coated on the entire surface of the depression. With transverse bulkheads, Including a vertical partition wall to cross the horizontal partition wall to form a discharge cell, The horizontal partition wall partitions two adjacent discharge cells coated with the same phosphor among the plurality of discharge cells, and at least one differential having a height different from the horizontal partition wall in an exhaust channel formed in the advancing direction of the horizontal partition wall on the horizontal partition wall. And a partition wall is formed to cross the exhaust channel. The method of claim 13, And the height of the differential barrier is lower than the horizontal barrier. The method of claim 13, And the height of the differential barrier is 0.2 to 0.7 times the height of the horizontal barrier. The method of claim 13, And the plurality of differential barrier ribs are formed in one exhaust channel, and the distance between two consecutive differential barrier ribs among the plurality of differential barrier ribs is the same. The method of claim 13, The differential partition wall is formed in plural in one exhaust channel, And the plurality of differential barrier ribs are formed at positions corresponding to the vertical barrier ribs on the exhaust channel, respectively. The method of claim 13, And a groove is formed in the exhaust channel in the direction of two adjacent discharge cells coated with the same phosphor. The method of claim 18, And the groove is less than 1/3 of the width of the one discharge cell corresponding to the exhaust channel.

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