KR100692020B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel having an improved barrier rib structure. Accordingly, the plasma display panel according to the present invention includes an upper substrate, a lower substrate disposed at an arbitrary distance from the upper substrate, and partition walls partitioning discharge cells coated with phosphors between the upper substrate and the lower substrate, and different from each other. At least one opening is formed in a partition wall partitioning two adjacent discharge cells coated with a phosphor. As such, by improving the barrier rib structure of the plasma display panel, there is an effect of improving the exhaust characteristics and the discharge efficiency during plasma discharge.

Plasma display panel, bulkhead, discharge cell, open,

Description

Plasma Display Panel

1 is a perspective view schematically showing the structure of a conventional plasma display panel;

2 is a diagram illustrating a hexagonal delta partition structure of a conventional plasma display panel;

3 is a view for explaining a hexagonal partition structure of the plasma display panel according to the present invention in more detail,

4 is a partially exploded perspective view showing a plasma display panel according to an embodiment of the present invention;

5 is a view for explaining a discharge cell arrangement of a plasma display panel according to an embodiment of the present invention;

6 is a view for explaining the discharge cell shape of the plasma display panel according to an embodiment of the present invention;

7A and 7B are perspective views illustrating a partition structure of a plasma display panel according to an embodiment of the present invention;

8 is a view for explaining an arrangement of discharge cells of a plasma display panel according to another embodiment of the present invention;

9 is a view for explaining a discharge cell shape of a plasma display panel according to another embodiment of the present invention;

10A and 10B are perspective views illustrating a barrier rib structure of a plasma display panel according to another exemplary embodiment of the present invention.

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having an improved partition structure.

In general, a plasma display panel is a partition wall formed between a front substrate and a rear substrate to form a unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas 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 is a perspective view showing the structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front substrate 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 substrate 101, which is a display surface on which an image is displayed. The rear substrate 110 having the plurality of address electrodes 113 arranged so as to intersect with the plurality of sustain electrode pairs on the rear substrate 11 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. do.

The front substrate 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 substrate 110 is arranged in such a manner 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 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 112. On the upper side of the rear substrate 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.

On the other hand, in the conventional plasma display panel having such a structure, the plurality of discharge spaces, that is, the partition wall 112 for dividing the discharge cells are divided into a stripe type and a closed type according to the structure.

Here, the partition structure having a delta arrangement in the closed type partition structure is as follows.

2 is a diagram illustrating a hexagonal delta partition structure of a conventional plasma display panel.

As shown in FIG. 2, the delta-type barrier rib structure in which the barrier rib is formed into a hexagonal structure is addressed by applying an address voltage between the address electrode and the discharge sustain electrode of one of the pair of sustain electrodes corresponding to the selected unit discharge cell. If the sustain step is performed by alternately applying a discharge sustain voltage to a pair of discharge sustain electrodes, the ultraviolet rays generated in the sustain step excite the phosphors provided to the discharge cells, thereby generating any visible light. To implement the image.

However, the delta type plasma display panel has a form in which each discharge cell is closed as compared with the stripe partition wall structure, so that the exhaust characteristics of the exhaust process are deteriorated and the exhaust characteristics are irregular.

Accordingly, an object of the present invention is to provide a plasma display panel which can improve the exhaust characteristics and make the exhaust characteristics even by improving the partition structure of the plasma display panel in order to solve the above problems.

Plasma display panel of the present invention for solving the above technical problem is a partition wall partitioning the front substrate, the rear substrate disposed at an arbitrary distance from the front substrate and the discharge cells coated with phosphor between the front substrate and the rear substrate. At least one opening is formed in a partition wall partitioning two adjacent discharge cells coated with different phosphors.

Here, it is preferable that the above-described discharge cells are made of a polygon that is arranged in a delta method.

In addition, the opening is formed in the corner portion of the partition, characterized in that formed between two adjacent corners of the partition.

At this time, the angle formed by the partition wall in the corner is characterized in that more than 30 ° 160 ° or less.

In addition, the opening is characterized in that formed by a portion of the partition wall stepped.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

3 is a view for explaining the hexagonal partition structure of the plasma display panel according to the present invention in more detail.

As shown in FIG. 3, the hexagonal partition structure has a plurality of edges on the partition such as A, B, C, D, E, and F. As shown in FIG. An opening may be formed between the corner portions A, B, C, D, E, and F or two adjacent corners to improve exhaust characteristics, and the opening may be formed to completely separate the partition from the neighboring partition. Or part of the partition wall is formed by stepping. At this time, it is preferable that the K value of the angle which a partition forms in the corner parts A, B, C, D, E, F is 30 degree or more and 160 degrees or less.

As described above, the barrier rib structure in which the opening is formed to improve the exhaust characteristics will be described in more detail as follows.

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

As shown in FIG. 4, the plasma display panel according to an exemplary embodiment of the present invention may include R, G, between the front substrate 21, the rear substrate 20, the front substrate 21, and the rear substrate 20. And a partition wall 26 for partitioning the B discharge cells.

Between the rear substrate 20 and the front substrate 21, a partition wall 26 defining pixels 24 having a predetermined height and having an arbitrary pattern is disposed, wherein the set of pixels 24 is as described above. Three discharge cells 24R, 24G, and 24B are formed together.

Here, the partition wall 26 has a structure in which the discharge cells 24R, 24G, and 24B are arranged in a delta type, and each discharge space 24a, 24b, and 24c of the discharge cells 24R, 24G, and 24B are disposed. ) Has a hexagonal shape.

In the discharge spaces 24a, 24b, and 24c, a discharge gas necessary for driving the plasma display panel is provided, and the R, G, and B discharge cells 24R, 24G, and 24B correspond to red, green, and the like. Blue fluorescent layers are each applied. At this time, the fluorescent layer is formed on both the bottom surface of the discharge spaces 24a, 24b, 24c and the side surface of the partition wall 26.

Here, the partition wall 26 surrounding all the discharge cells of R, G, B in a hexagonal shape is formed with an opening 30 for improving the exhaust characteristics in the corner portion formed at an angle.

Meanwhile, a plurality of discharge sustain electrodes 22 and 23 are formed on the upper substrate 21, and the discharge sustain electrodes 22 and 23 are formed along the shape of the partition wall 26 of the lower substrate 20.

In addition, a transparent dielectric layer 34 and a protective layer 36 made of MgO are sequentially formed on the upper substrate 21 while covering the discharge sustain electrodes 22 and 23.

The arrangement of the discharge cells divided by the barrier rib structure in which the opening part 30 is formed will be described in more detail with reference to FIGS. 5 and 6.

5 is a view illustrating a discharge cell arrangement of the plasma display panel according to an embodiment of the present invention, Figure 6 is a view for explaining the discharge cell shape of the plasma display panel according to an embodiment of the present invention.

First, referring to FIG. 5, the partition wall 26 having a hexagonal shape encloses all discharge cells 24R, 24G, and 24B in a hexagonal shape, and an opening part for improving exhaust characteristics at corner portions formed at an angle thereof. 30 is formed.

As such, at least one opening 30 is formed at an edge portion of the partition wall partitioning two adjacent discharge cells coated with different phosphors so that the discharge cells 24R, 24G, and 24B can be smoothly discharged. At the same time, the exhaust characteristics are even.

Referring to FIG. 6, three discharge cells 24R, 24G, and 24B are arranged in a delta shape with different colors. The discharge cells 24R, 24G, and 24B are formed in a hexagon by a hexagonal partition wall 26, and an opening 30 is formed at each corner portion of the hexagon. In this way, by opening the edge portion partitioned with the adjacent discharge cells of the hexagonal partition wall 26 surrounding the discharge cells to evenly exhaust the exhaust gas is made smoothly.

Such a shape of both sides of the partition wall is not limited to a rectangular shape as shown in Fig. 6, but can be formed in various shapes. By forming the shapes of both sides of the partition wall in a triangular shape or in a semicircle shape, The phosphor coating area can be improved.

As such, looking at the structure of the opening is formed in the corner portion of the partition according to an embodiment of the present invention as follows.

7A and 7B are perspective views illustrating a partition structure of a plasma display panel according to an embodiment of the present invention.

First, as shown in FIG. 7A, the partition walls 26 and 26 ′ of the plasma display panel are formed in a hexagonal shape, and an opening 30 ′ is formed at each corner of the hexagon. The opening 30 ′ completely separates the partition 26 partitioning the discharge cell from the adjacent partition 26 ′ to facilitate the exhaust characteristics.

On the other hand, referring to FIG. 7B, unlike the aforementioned FIG. 7A, the opening part 30 ″ formed at the corner portion of the partition wall having a hexagonal shape does not completely separate the partition 26 and the adjacent partition wall 26 ′, and the partition wall ( 26) is formed at the corner of the partition wall with a predetermined step. Accordingly, the image quality may be improved by preventing the mixing of the exhaust characteristics and adjacent different phosphors.

In addition, although only the opening of the corner portion of the partition is described herein, the present invention is not limited thereto, and it is possible to open the corner between the corner and the corner of the partition.

8 is a view illustrating a discharge cell arrangement of a plasma display panel according to another embodiment of the present invention, Figure 9 is a view for explaining the discharge cell shape of the plasma display panel according to another embodiment of the present invention.

First, referring to FIG. 8, a partition wall having a hexagonal shape surrounds all discharge cells 34R, 34G, and 34B in a hexagonal shape, and an opening part for improving exhaust characteristics between an angled corner and an adjacent corner. 40 is formed.

As such, at least one opening 40 is formed between an edge of a partition wall partitioning two adjacent discharge cells coated with different phosphors and an edge adjacent thereto to exhaust the discharge cells 34R, 34G, and 34B. It can be made smoothly.

9, the three adjacent discharge cells 34R, 34G, and 34B have different colors and are arranged in a delta shape. The discharge cells 34R, 34G, and 34B are formed in a hexagon by a hexagonal partition wall 36, and an opening 40 is formed between each corner 38 constituting the hexagon and an adjacent edge 38 '. Is formed. In this way, by opening between the corners of the hexagonal partition wall 36 surrounding the discharge cells and the adjacent corners, the exhaust characteristics are evenly made and the exhaust is smoothly performed.

As described above, the structure of the opening is formed between the edge of the partition wall and the adjacent edge according to another embodiment of the present invention.

10A and 10B are perspective views illustrating a barrier rib structure of a plasma display panel according to another exemplary embodiment of the present invention.

First, as shown in FIG. 10A, the partition wall 36 of the plasma display panel is formed in a hexagonal shape, and at least one opening 40 ′ is formed between each corner 38 and the adjacent corner 38 ′ forming the hexagon. Is formed. The open portion 40 ′ completely separates the partition wall which partitions the discharge cell and the adjacent partition wall to facilitate the exhaust characteristics.

On the other hand, referring to FIG. 10B, unlike the aforementioned FIG. 10A, the opening 40 ″ formed between the edge 38 and the adjacent edge 38 ′ of the partition 36 formed in a hexagonal shape completely closes the partition and the adjacent partition. Without separating, it is formed between the corners with a predetermined step on the partition 36. Accordingly, the image quality may be improved by preventing the mixing of the exhaust characteristics and adjacent different phosphors.

Herein, the hexagonal delta partition structure has been described as an embodiment, but the present invention is not limited thereto, and may be formed on various polygonal partition walls having corners that form angles such as lattice shapes.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments 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 detailed description, and the meaning and scope of the claims 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 above, the present invention improves the partition structure of the plasma display panel, thereby improving the exhaust characteristics and the discharge efficiency during plasma discharge.

Claims (7)

A front substrate; A rear substrate disposed at an interval from the front substrate; And A partition wall partitioning two adjacent discharge cells coated with different phosphors between the front substrate and the rear substrate, The partition wall partitions two adjacent discharge cells coated with different phosphors, and at least one open portion is formed at a corner thereof. The method of claim 1, And the discharge cells are arranged in a delta manner. The method of claim 1, And the discharge cells have a polygonal shape. delete A front substrate; A rear substrate disposed at an interval from the front substrate; And A partition wall partitioning discharge cells coated with phosphors between the front substrate and the rear substrate; The partition wall partitions two adjacent discharge cells coated with different phosphors, and at least one opening is formed between two corner portions. The method according to claim 1 or 5, And an angle formed by the partition wall at the corners is 30 ° or more and 160 ° or less. The method according to claim 1 or 5, And the opening portion is formed by a portion of the partition wall being stepped.

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