KR100705826B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel in which a black matrix is formed to correspond to a partition wall. The plasma display panel according to the present invention includes a first partition partitioning a subpixel and a second partition partitioning a unit cell made of subpixels, wherein the width of the second partition is greater than the width of the first partition. Widely formed, the black matrix is formed to correspond to the upper portion of the second partition. In this case, the subpixels are any one of R (red), G (green), or B (blue), and the unit cell is characterized in that the R, G, and B subpixels constitute one unit cell. Therefore, there is an effect of preventing the reduction of the pixel emission amount and reducing the reflectance of the entire plasma display panel to improve the contrast. In addition, the color of the unit pixel combined with the light emission of the R (red), G (green), and B (blue) subpixels is further separated from the color of the adjacent pixel spatially, thereby improving visual blending. .

Plasma display panel, PDP, front, back, bulkhead, pixel, black matrix,

Description

Plasma Display Panel {Plasma Display Panel}

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

2A and 2B are enlarged views showing a partition structure of a conventional plasma display panel.

3A and 3B are plan views illustrating a black matrix formed in a plasma display panel having a stripe type barrier rib structure.

4A and 4B are plan views illustrating a black matrix formed in a plasma display panel having a lattice-shaped partition wall structure.

5 is a perspective view showing a plasma display panel according to an embodiment of the present invention.

FIG. 6 is a plan view illustrating a black matrix formed in a plasma display panel having a stripe type barrier rib structure according to an exemplary embodiment of the present invention. FIG.

FIG. 7 is a plan view illustrating a black matrix formed in a plasma display panel having a lattice type barrier rib structure according to an exemplary embodiment of the present invention. FIG.

8 is a plan view illustrating a black matrix formed on a plasma display panel having a stripe-type partition wall structure according to another exemplary embodiment of the present invention.

9 is a plan view illustrating a black matrix formed in a plasma display panel having a lattice-shaped partition wall structure according to another exemplary embodiment of the present invention.

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

500: front panel 10: black matrix

510: rear panel 512a: first partition wall

512b: second bulkhead

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which a black matrix is formed to correspond to a partition wall.

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) 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. A general structure of such a plasma display panel is illustrated in FIG. 1.

1 is a perspective view illustrating a structure of a general plasma display panel.

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

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 facilitate discharge conditions on the upper dielectric layer 104 top surface. In order to do this, a protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear panel 110 is arranged on the rear glass 111 with a plurality of discharge spaces, that is, partitions 112 of a stripe type (or well type) for forming a discharge cell 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 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.

In the plasma display panel having such a structure, each subpixel coated with R, G, and B phosphors gathers to form a unit discharge cell on the boundary wall 112, and the unit discharge cell is also adjacent to the barrier 112. It is arranged in a constant shape with the unit discharge cells thus formed to express an image.

In the conventional plasma display panel having such a discharge cell structure, the partition wall 112 is formed to separate phosphors emitting colors of R (red), G (green), and B (blue), and thus, electrical, It serves to prevent optical crosstalk, and the general shape of such a partition is shown in FIGS. 2A and 2B.

2A and 2B are enlarged views illustrating a barrier rib structure of a conventional plasma display panel.

First, as shown in FIG. 2A, the partition wall of the plasma display panel is arranged in a stripe shape while being perpendicular to the sustain electrode formed of the transparent electrode a and the bus electrode b of FIG. 1.

Such a stripe-type barrier rib structure has a simple manufacturing process, but there is a problem that visible light generated during discharge leaks in the stripe direction of the barrier rib, and phosphor printing and exhausting are easy, but misdischarge and phosphor coating area affecting adjacent cells are small. There is a problem.

FIG. 2B is a grid-shaped partition wall structure of a conventional plasma display panel, and is arranged in a grid shape while being horizontal or vertical with a sustain electrode formed of the transparent electrode a and the bus electrode b of FIG. 1.

Such a grid-shaped partition wall structure can designate each color cell, thereby improving luminance, blocking leakage light, and preventing crosstalk in all directions.

However, the lattice-shaped partition wall structure can increase the brightness because the influence of adjacent cells is small and the coating area of the phosphor is large.

Accordingly, a Delta bulkhead structure that combines the advantages of stripe type and lattice type bulkhead structure has been proposed.

Such a triangular partition structure has a merit of being a stripe type and a lattice type by forming a structure similar to the lattice type while being bent at the same time as the stripe type structure.

That is, by forming the barrier ribs similarly to the stripe-type structure, the impurity gas generated at the time of discharge can be smoothly discharged, thereby improving the exhaust characteristics. In addition, by forming similar to the shape of the lattice-shaped partition wall, it is possible to designate each color cell to improve the emission luminance, to block the leakage light, and to prevent crosstalk phenomenon in all directions. .

As such, the partition wall 112 is the most important factor in controlling the characteristics of the display quality and luminous efficiency of the plasma display panel.

In addition, generally, the upper side of the partition 112 has a function of light blocking that absorbs external light generated from the outside of the front glass 101 to reduce reflection, and improves color purity and contrast of the front glass 101. A black matrix, which functions as a back light, is formed.

An example in which the black matrix is formed in a plasma display panel having a stripe-type barrier rib structure is as shown in FIGS. 3A and 3B.

3A and 3B are plan views illustrating a black matrix formed in a plasma display panel having a stripe type barrier rib structure.

First, as shown in FIG. 3A, in a plasma display panel having a stripe-type partition wall 112 structure, the width of the barrier 112 and the boundary of each sub-pixel are similar to each other.

The black matrix 300 is formed transversely on the front panel at a position corresponding to the partition wall 112.

In addition, as illustrated in FIG. 3B, the front panel is formed in a horizontal direction on the front panel at a position corresponding to the boundary of the subpixels, that is, the partition wall 112 that divides the R, G, and B subpixels.

In addition, an example in which a black matrix is formed in a plasma display panel having a lattice-shaped partition wall structure will be described with reference to FIGS. 4A and 4B.

4A and 4B are plan views illustrating a black matrix formed in a plasma display panel having a grid-shaped partition wall structure.

First, as shown in FIG. 4A, in the plasma display panel having the grid-shaped partition wall 212, the black matrix 300 is disposed on the front panel at the position corresponding to the partition wall 112 in the same manner as in FIGS. 3A and 3B. Form.

In addition, as shown in FIG. 4B, it is possible to form the front panel at a position corresponding to the boundary of the subpixels, that is, the partition walls 212 that divide the R, G, and B subpixels.

The black matrix 300 may be formed on the partition wall or may be formed on the front panel to correspond to the partition wall.

The black matrix 300 generally uses a black material to absorb external light generated from the outside of the front glass 101 to reduce reflection or to improve color purity and contrast of the front glass 101. do.

Therefore, when the black matrix 300 is formed on the partition wall partitioning each sub-pixel as shown in FIGS. 3B and 4B, the luminance of the plasma display panel is reduced.

In addition, since the black matrix 300 is formed to correspond to the partition wall, there is a problem that alignment with the partition wall is difficult.

In addition, the color of the pixel combined with the bladder of the sub-pixel is sensed spatially close to the color of the adjacent pixel, there is a problem that the color mixing of the color deteriorates.

Accordingly, an object of the present invention is to provide a plasma display panel in which a black matrix is formed on a front panel so as to correspond to a wide second partition wall.

The plasma display panel for achieving the object of the present invention comprises a first partition partitioning the sub-pixels, and a second partition partitioning the unit cell consisting of the sub-pixels, the width of the second partition wall is the first partition wall It is formed to be wider than the width, characterized in that the black matrix is formed to correspond to the upper portion of the second partition.

In this case, the subpixels are any one of R (red), G (green), or B (blue), and the unit cell is characterized in that the R, G, and B subpixels constitute one unit cell.

Such a unit cell is characterized by having a different cell arrangement.

In addition, the unit cell is characterized in that the configuration of any one of R G B, G B R or B R G.

At this time, the second partition wall partitioning the upper and lower adjacent unit cells is formed in different positions.

When the second partition is partitioned between two subpixels of R, G, and B, the second partition is formed at a position shifted by the size of one subpixel in the partitioned position in the next line. It features.

In this case, the black matrix is formed on the front panel so as to correspond to the second partition wall.

In addition, the black matrix is characterized in that formed on the second partition wall.

One end of the black matrix is short-circuited.

Hereinafter, a plasma display panel according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

5 is a perspective view showing a plasma display panel according to an embodiment of the present invention.

As shown in FIG. 5, a plasma display panel includes a front substrate on which a plurality of sustain electrode pairs formed by pairing a scan electrode 502 and a sustain electrode 503 on a front glass 501, which is a display surface on which an image is displayed, is arranged. A rear substrate 510 having a plurality of address electrodes 513 arranged to intersect the plurality of sustain electrode pairs on the back glass 511 forming the rear surface 500 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front panel 500 is made of a scan electrode 502 and a sustain electrode 503, 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 502 and the sustain electrode 503 provided as the bus electrode b are included in pairs.

The scan electrode 502 and the sustain electrode 503 are covered by one or more upper dielectric layers 504 that limit the discharge current and insulate the electrode pairs, and facilitate discharge conditions on the upper dielectric layer 504 top surface. In order to do this, a protective layer 505 on which magnesium oxide (MgO) is deposited is formed.

The rear panel 510 has the first barrier 512a and the second barrier 512b of the stripe type (or well type) for forming a plurality of discharge spaces, that is, discharge cells, on the rear glass 511 in parallel. Are arranged. In addition, a plurality of address electrodes 513, which perform address discharge to generate vacuum ultraviolet rays, are disposed in parallel with the first partition 512a and the second partition 512b.

On the upper side of the rear panel 510, R, G, and B phosphors 514 which emit visible light for displaying an image during address discharge are coated. A lower dielectric layer 515 is formed between the address electrode 513 and the phosphor 514 to protect the address electrode 513.

In the plasma display panel having such a structure, each of the subpixels coated with R, G, and B phosphors gathers to form a unit discharge cell around the first partition 512a, and the unit discharge cell also forms the second partition 512b. The unit discharge cells adjacent to the boundary are arranged in a constant shape to represent an image.

 As described above, the plasma display panel includes a first partition wall 512a that partitions subpixels and a second partition wall 512b that partitions unit cells formed of subpixels, and the width of the second partition wall 512b is first. It is formed wider than the width of the partition 512a.

Thereafter, a black matrix is formed to correspond to the upper portion of the second partition 512b. Referring to FIG.

6 is a plan view illustrating a black matrix formed in a plasma display panel having a stripe-type barrier rib structure according to an exemplary embodiment of the present invention.

As shown in FIG. 6, in the stripe-type barrier rib structure of the plasma display panel, the subpixels are any one of R (red), G (green), or B (blue), and the unit cells are R, G, and B subpixels. This unit cell is constituted.

At this time, the width of the second partition wall 512b partitioning the R, G, B unit pixels is wider than the width of the first partition wall 512a partitioning each of the R, G, and B subpixels, and the second The black matrix 10 is formed on the front panel (not shown) to correspond to the partition wall 512b.

Here, the unit cells in which the black matrix 10 is formed have different cell arrangements, and the second partition walls 512b partitioning up and down adjacent unit cells are formed at different positions.

For example, the unit cells arranged in the order of R G B in the A line have the same arrangement in the R G B on the same line.

However, in the next line B, which is arranged in the order of G B R, this also forms the same arrangement in G B R on the same line.

Further, the next line C line is arranged in the order of B R G, which is also the same line B R G on the same line.

That is, when the second partition 512b is partitioned between two subpixels of R, G, and B, the second partition 512b is positioned at a position shifted by the size of one subpixel from the partitioned position of the previous line in the next line. Two partitions 512b are formed.

The black matrix 10 is formed on the front panel at a position corresponding to the second partition 512b formed as described above.

In addition, the black matrix 10 is formed in the lattice-shaped partition wall in the same manner as above.

FIG. 7 is a plan view illustrating a black matrix formed in a plasma display panel having a lattice partition structure according to an exemplary embodiment of the present invention.

As shown in FIG. 7, R, G, and B unit pixels are larger than a width of the first partition wall 612a that divides any one of R, G, and B subpixels in the grid-shaped partition wall structure of the plasma display panel. The width of the second partition 612b partitioning the width is formed to be wider.

6, when the second partition wall 612b is formed between the R subpixel and the G subpixel in the A line, the G subpixel shifted by the size of one subpixel in the B line. A second partition 612b is formed between the B subpixels.

Thereafter, the black matrix 10 is formed on the front panel so as to correspond to the second partition 612b formed to have a wider width than the first partition 612a.

At this time, it is possible to short-circuit one end of the black matrix 10 in order to ensure electrical insulation. An example thereof will be described with reference to FIGS. 8 and 9.

FIG. 8 is a plan view illustrating a black matrix formed in a plasma display panel having a stripe-type barrier rib structure according to another exemplary embodiment of the present invention, and FIG. 9 is a plasma display panel having a grid-type barrier rib structure according to another exemplary embodiment of the present invention. It is a top view which shows the black matrix formed in the.

As illustrated in FIG. 8, in the plasma display panel having a stripe-type partition wall structure, there are first partition walls 512a and 612a and second partition walls 512b and 612b formed on the same principle as described with reference to FIG. The partitions 512b and 612b are formed wider than the widths of the first partitions 512a and 612a.

Thereafter, the black matrix 10 is formed at a position corresponding to the second partition walls 512b and 612b of the front panel. At this time, one end of the black matrix 10 is formed to be short-circuited.

This is because, although not shown in the case where the black matrix 10 is conductive, short-circuit between the scan electrode and the sustain electrode causes short circuiting of one end of the black matrix 10, thereby ensuring electrical insulation.

Here, only the formation of the black matrix 10 on the front panel so as to correspond to the second partitions 512b and 612b has been described. However, the present invention is not limited thereto and may be formed on the second partitions 512b and 612b. Do.

In addition, although only the case where the black matrix 10 is formed in the barrier rib of the stripe type and the lattice structure has been described, the present invention is not limited thereto, and the same applies to all the barrier rib structures such as the triangle barrier rib structure.

As such, the widths of the second partition walls 512b and 612b partitioning the R, G and B unit pixels are wider than the widths of the first partition walls 512a and 612a partitioning the R, G, and B subpixels. do.

Here, by forming the black matrix 10 on the front panel so as to correspond to the wide second partitions 512b and 612b, the second partitions 512b and 612b of the rear panel and the black matrix 10 of the front panel are formed. It can be easily aligned to the liver.

In addition, the contrast can be improved by reducing the amount of light emitted from the pixels and reducing the reflectance of the entire plasma display panel.

In the case where the second partition wall 612b is formed between the R subpixel and the G subpixel in the A line, the G subpixel, which is the position shifted by the size of one subpixel, A second partition 612b is formed between the B subpixels.

As a result, the color of the unit pixel combined with the light emission of the R, G, and B subpixels is further spatially separated from the color of the adjacent pixel, thereby improving visual blending.

As described in detail above, the present invention has an effect of facilitating alignment between the rear panel and the front panel by forming a black matrix to correspond to the wide second partition wall.

In addition, there is an effect of preventing the reduction of the pixel emission amount and reducing the reflectance of the entire plasma display panel to improve the contrast.

In addition, the color of the unit pixel combined with the light emission of the R (red), G (green), and B (blue) subpixels is further separated from the color of the adjacent pixel spatially, thereby improving visual blending. .

Claims (9)

A first partition partitioning the subpixels and a second partition partitioning the unit cell formed of the subpixels; And a width of the second partition wall is wider than that of the first partition wall, and a black matrix is formed to correspond to an upper portion of the second partition wall. The method of claim 1, The subpixels may be any one of R (red), G (green), or B (blue), and the unit cell may include the R, G, and B subpixels constituting one unit cell. . The method of claim 2, And the unit cells have different cell arrangements. The method of claim 3, wherein And the unit cells are arranged in any one of R G B, G B R and B R G. The method of claim 1, And the second partition walls that partition the unit cells vertically adjacent to each other are formed at different positions. The method of claim 2, When the second partition wall is partitioned between two subpixels of the R, G, and B, the second partition wall is formed at a position shifted by the size of one subpixel in the partitioned position in the next line. And a plasma display panel. The method of claim 1, And the black matrix is formed on a front panel so as to correspond to the second partition wall. The method of claim 1, And the black matrix is formed on the second partition wall. The method of claim 1, One end of the black matrix is short-circuited.

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