WO2008010301A1

WO2008010301A1 - Plasma display panel

Info

Publication number: WO2008010301A1
Application number: PCT/JP2006/314702
Authority: WO
Inventors: Koichi Sakita
Original assignee: Hitachi Plasma Display Limited
Priority date: 2006-07-19
Filing date: 2006-07-19
Publication date: 2008-01-24
Also published as: JPWO2008010301A1

Abstract

Provided is a plasma display panel including a plurality of first ribs formed in a first direction, and a plurality of second ribs formed in a second direction intersecting with the first direction. The second ribs are different in number or height on such lines of the first direction as adjoin each other in the second direction. As a result, it is possible to eliminate the contaminants sufficiently from the panel inside.

Description

Technical details Plasma display panel Technical field

The present invention relates to a plasma display panel, and more particularly to a plasma display panel having sub-pixels having a partition wall (U-shaped) structure. Background art

Figure 1 schematically shows the structure of an example of a plasma display panel.

It is a country perspective view. In FIG. 1, reference numeral 1 indicates a rear substrate, 2 indicates a HIJ surface substrate, and 3 indicates an exhaust pipe.

As shown in Fig. 1, the plasma display panel has a structure in which two glass substrates, a rear substrate 1 and a front substrate 2, are bonded together. For example, a seal material made of low-melting glass is applied to the periphery of the panel, and the seal material is melted and fixed by heating. Further, the inside of the panel between the back substrate 1 and the front substrate 2 is, for example, evacuated from the exhaust pipe 3 attached to the back substrate 1 to remove contaminants and once brought into a low pressure state, and then It is designed to contain inert gas such as N e and X e.

FIG. 2 is a diagram showing the structure of the back substrate 1 in the plasma display panel of FIG.

As shown in Fig. 2, on the surface of the back substrate 1 joined to the front substrate 2, a partition wall (re- spectively) is formed corresponding to each color pixel (sub-pixel) and partitioning each pixel. B) 10 is formed in a lattice pattern. Here, the rib 10 includes, for example, a first rib (vertical rib 12) extending in the first direction (vertical direction) of the panel and a second rib (vertical direction) extending in the second direction (horizontal direction) of the panel. It is composed of horizontal ribs 1 1).

For example, the sand buchst method or the etching method is adopted for the formation of the ribs. As the partition material (b material), for example,

A paste made of low melting point glass mixed with solid content (filer) and resin content is used.

,

In addition, when applying the Sando brass method for the formation of ribs, for example, cloth and drying the rib material on the back substrate 1, and then applying a light dry film and patterning the rib material. After cutting and forming, the resin is removed by firing to form ribs 10. Here, red (R), green (G), and blue (B) phosphors are respectively applied to the areas partitioned by the ribs, and a discharge space is formed so as to generate a discharge. .

Fig. 3 shows an example of the rib (rib) structure of a conventional plasma display panel. In FIG. 3, reference numeral 1 1 indicates a horizontal rib extending in the left-right direction of the panel, and 1 2 indicates a vertical rib extending in the vertical direction of the panel.

As shown in FIG. 3, the plasma display panel having the sub-pixels of the conventional rib structure is formed in a lattice pattern by the horizontal ribs 1 1 (1 1 R, 1 1 G, 1 1 B) and the vertical ribs 1 2 Specifies partitioned subpixels (cells). Here, phosphors of the same color are usually applied in the vertical direction.

The lateral rib. 1 1 is provided to prevent erroneous display due to interference in the vertical direction. For example, when an adjacent vertical cell is lit, excessive priming particles are generated from the adjacent cell. Or unnecessary wall charges are generated due to the flow of charged particles from above and below. As a result, the cells that are originally intended to be turned off are prevented from being turned on erroneously.

By the way, as described with reference to FIG. 1, in the manufacturing process of the plasma display panel, for example, the exhaust pipe 3 attached to the rear substrate 1 is evacuated to remove contaminants inside the panel. It was.

That is, as shown in Fig. 3, in the conventional plasma display panel, a very narrow exhaust path 1 1d and 1 2d is formed in the uneven part of the apex of the rib due to firing contraction of the rib material. However, the evacuation of the inside of the panel was performed through the exhaust paths 1 1 d and 1 2 d. However, the uneven exhaust paths 1 1 d and 1 2 d at the top of the rib were at most several m Very narrow <10 m, and vertical and horizontal ribs are connected in series. In addition, due to the recent demand for higher definition, the exhaust duct of the entire panel For example, the number of pixels 1 0 2 4 X 7 6 8 X

In the case of a panel equivalent to GA, the exhaust conductance is reduced to about 1 in 76.88 in the vertical direction and about 10.24.times.1 / 3 in the horizontal direction. In the panel, there was a problem that contaminants inside the panel could not be sufficiently removed. Fig. 4 is a diagram showing another example of a partition structure of a conventional plasma display panel.

As shown in Fig. 4, conventionally, in order to sufficiently remove the contaminants inside the panel, for example, the height of the lateral rib 1 1 (1 1 R, 1 1 G, 1 1 B) is reduced. Prevents erroneous display of cells due to vertical interference At the same time, a plasma display panel has been proposed that ensures a sufficient exhaust path 1 1 e.

However, in order to make the horizontal rib 1 1 and the vertical rib 1 2 have different heights, it is necessary to use a photosensitive J-tube material or to perform the exposure step multiple times during patterning It was.

Fig. 5 is a diagram showing another example of the partition structure it of the conventional plastic spray panel.

Fig. 1 to Fig. 4 • The plasma display panel described with reference to ar W has cells (sub-pixels) with a rectangular U-shaped structure, but the plasma display panel is shown in Fig. 5. Those having cells with a rib-shaped rib structure as shown are also in practical use.

The present invention can be widely applied to a plasma display panel having such a hexagonal rib-structure cell.

By the way, in the past, it was assumed that a plasma display panel capable of providing a bright and stable display with excellent productivity in both rib formation and exhaust treatment would be realized. It is formed with a pattern width of 130% or more of the width of the vertical rib so that the amount of heat shrinkage is greater than the heat shrinkage in the height direction of the vertical rib, and the intersection of the vertical and horizontal ribs is formed. In addition, there has been proposed a structure in which a ventilation path that passes through the top of the horizontal rib is provided by forming it partially lower (see, for example, Patent Document 1).

Patent Literature 1

Japanese Patent Application Laid-Open No. 2 0 0 5 — 1 0 1 0 0 5 Disclosure of the Invention

The present invention has been made in view of the problems of the above-described prior art, and a plasma that can sufficiently remove contaminants inside the panel. The purpose is to provide a display panel.

According to the present invention, a plasma device having a plurality of first ribs formed in the first direction and a plurality of second ribs formed in the second direction intersecting the first direction. There is provided a plasma display panel, wherein the number or height of the second ribs is different on a line in the first direction adjacent to the second direction. The

The IJ fin is a line coated with the same color phosphor in the first direction of F1U, and the line that reduces the number of the second ribs has a wide operating voltage margin and brightness. A line coated with a phosphor having a color that has little influence on the characteristics is preferred. In addition, the RIJ plasma display panel preferably includes a three-color line coated with the same three-color phosphors of red, green, and blue in the first direction.

Here, it is possible to remove all of the second ribs on the red line or to remove all of the second ribs on the red and blue lines. Further, the second ribs on the red line are removed every predetermined number, or the second U ribs on the red and blue lines are removed every predetermined number. <

Further, the height of the second '"on the red line is set to be low, or the height of the second rib on the red and blue lines is set to be low. Good

Further, an exhaust path is provided in the second U-tube.

And according to the plasma display panel of the present invention, contaminants inside the panel can be sufficiently removed. The present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a perspective view schematically showing the structure of an example of a plasma display panel.

Figure 2 shows the structure of the back substrate in the plasma display panel of Figure 1.

Figure 3 shows an example of a partition structure of a conventional plasma display panel.

Figure 4 shows another example of a partition structure of a conventional plasma display panel.

Figure 5 shows another example of the bulkhead structure of a conventional brass display panel.

FIG. 6 is a diagram schematically showing the separation structure of the first embodiment of the plasma display panel according to the present invention.

FIG. 7 is a diagram schematically showing a partition structure of a second embodiment of the plasma display panel according to the present invention.

FIG. 8 is a diagram schematically showing the partition structure of the third embodiment of the plasma display panel according to the present invention.

FIG. 9 is a diagram schematically showing the partition structure of the fourth embodiment of the plasma display panel according to the present invention.

FIG. 10 is a diagram schematically showing the P 1 wall structure of the fifth embodiment of the plasma display panel according to the present invention,

FIG. 11 schematically shows the partition structure of the sixth embodiment of the plasma display panel according to the present invention, and

FIG. 12 is a diagram schematically showing the partition structure of the seventh embodiment of the plasma display panel according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the plasma display panel according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described below.

FIG. 6 is a diagram schematically showing the partition structure of the first embodiment of the plasma display panel according to the present invention.

As is clear from the comparison between FIG. 6 and FIG. 3 described above, the plasma display panel of the first embodiment is a vertical cell (red display cell) coated with red (R) phosphor. Horizontal rib

1 1 R) is removed and an exhaust path 1 1 f is provided to increase the exhaust conductance. Here, the horizontal rib 1 1 R between the red display cells is removed, for example, This is because the red phosphor is the most stable and has a small influence on the luminance characteristics.

That is, for example, in the phosphor for plasma display panels used in current products, the operating voltage margin is generally narrow for green (G) and blue (B) phosphor display cells, and brightness Characteristics are

In the first embodiment, the highest operating voltage Mann is the most stable, the stability is high, and the influence on the luminance characteristics is the smallest (in this case, it is determined by the green (G) phosphor with the highest visual sensitivity. The horizontal ribs 11 R between the red display cells on which the phosphor of R) is formed are removed. That is, in FIG. 6, the phosphors of green (G) and blue (B) are respectively The phosphor is formed in a region surrounded by the vertical ribs 1 2 and the horizontal ribs 1 1 G and 1 1 B, and the red (R) phosphor is formed in a region without the horizontal ribs.

As described above, the irregularities (1 1 d 1 2 d) of the ribs surrounding the region where the green (G) and blue (B) phosphors are formed are about 10 m at most. Because the exhaust conductance of the region (11f) where the red (R) phosphor that is immediately adjacent to it is formed is sufficiently larger than the exhaust conductance of the unevenness of about 10, As in the case of the Plas Muddy display panel, it passes through the adjacent red (R) exhaust path 11f without passing through the narrow path 11d, 12d continuously. Will be removed.

FIG. 7 is a view schematically showing a partition structure of a second embodiment of the plasma display panel according to the present invention.

As is apparent from the comparison between FIG. 7 and FIG. 6 described above, the plasma display panel of the second embodiment is formed by the red (R) phosphor removed by the plasma display panel of the first embodiment described above. In addition to removing the horizontal ribs 1 1 R between the red front cells and providing the exhaust path 1 1 f, the horizontal ribs 1 between the blue display cells on which the blue (B) phosphor is formed 1

1 B is removed and an exhaust path 1 1 f is also provided.

Thus, the plasma display panel according to the present invention not only removes the horizontal rib 11 R between one red display cell, for example.

The horizontal rib 11 R between the plurality of red display cells and the horizontal U 11 B between the blue display cells may be removed.

FIG. 8 is a view schematically showing a partition structure of a third embodiment of the plasma display panel according to the present invention.

As is clear from the comparison between FIG. 8 and FIG. 6, the plasma display panel of the third embodiment is the horizontal rib 1 1 (1 1 G

, 1 1 B) in the vertical direction, i.e. the lateral rib 1 1 (1 1 G,

1 1 B)-Exhaust path 1 2 e is provided in-to further improve the lateral exhaust conductance.

FIG. 9 is a view schematically showing the partition structure of the fourth embodiment of the plasma display panel according to the present invention. As is clear from the comparison between FIG. 9 and FIG. 6, the plasma display panel of the fourth embodiment removes the horizontal rib 1 1 R between the red display cells in the first embodiment. It is configured not to be performed on a rib but alternately (every two cells) to suppress a reduction in operating margin for red display cells. The horizontal ribs 1 1 R between the red display cells can be removed every predetermined number instead of alternately. Also, the horizontal ribs 1 1 R between the red display cells and the blue display cells can be removed. Horizontal rib

1 1 B can also be removed every predetermined number

In the plasma display panel of the fourth embodiment, for example, the driving voltage is increased and the driving voltage is decreased in return for obtaining a high luminous efficiency by increasing the composition of the Xe gas. FIG. 10 is a view schematically showing the partition structure of the fifth embodiment of the plasma display panel according to the present invention.

As is clear from the comparison between FIG. 10 and FIG. 5 and FIG. 6 described above, the plasma display panel of the fifth embodiment is a horizontal rib between red display cells in the first embodiment. 11 R This removal was applied to a plasma display panel having a hexagonal rib-shaped cell as shown in Fig. 5. In addition, the other embodiments also apply to a plasma display panel having a hexagonal shape or various other shapes of a rib structure cell, instead of a plasma display panel having a rectangular shape rib structure cell. Needless to say, you can.

FIG. 11 is a diagram schematically showing a partition structure of a sixth embodiment of the plasma display panel according to the present invention, and FIG. 12 is a partition wall of the seventh embodiment of the plasma display panel according to the present invention. It is a figure which shows a structure typically.

As shown in Fig. 11, the plasma display of this sixth embodiment Instead of removing the horizontal ribs 11 R between the red display cells in the first embodiment described above, the panel reduces the height of the horizontal ribs 11 R between the red display cells, A difference in height is provided between the horizontal rib 1 1 G between the green display cells and the horizontal rib 1 1 B between the blue display cells.

Further, as shown in FIG. 12, the plasma display panel of the seventh embodiment removes and removes the horizontal rib 1 1 R between the red display cells, and further displays the green color. The height of the horizontal rib 11 G between the display cells for horizontal use and the horizontal rib 11 B between the display cells for blue are reduced.

6 and 7 described above, for example, in the sixth embodiment shown in FIG. 11, the horizontal rib 1 1 between the red display cells 1 1 R and the horizontal rib 1 1 between the blue display cells 1 1 The height of B may be formed lower than the horizontal rib 11 G between the green display cells. Furthermore, as in the fourth embodiment shown in FIG. 9, for example, the height of the horizontal rib 11 R between the display cells for red is set to a predetermined number (for example, alternately (every two cells)). It can also be formed low.

In general, the red display cell has a wider operating voltage margin and less influence on the luminance characteristics than the green display cell and the blue display cell. An appropriate configuration can be selected according to the relative relationship with the operation margin of the display cell for green and blue.

Note that the present invention can be widely applied not only to a rectangular shape but also to a plasma display panel having sub-pixels having rib structures of various shapes such as a hexagonal shape.

Claims

1. A plasma display panel having a plurality of first ribs formed in a first direction and a plurality of second ribs formed in a second direction intersecting the first direction. And

A plasma display panel characterized in that the height of W. or blue of the second rib is different on the line in the first direction adjacent to the second direction.

2. In the plasma display panel according to claim 1,

This line is a range where phosphors of the same color are applied in the direction of 1.

And

The second line, which reduces the number of ribs, is a plasma display panel characterized in that it is coated with a phosphor with a color that has a wide operating voltage margin and has little effect on luminance characteristics.

3. The plasma display panel according to claim 2, wherein the plasma display panel has the same red color in the first direction of HIJ.

A plasma display panel with three color lines coated with three colors of green and blue phosphors

4. The plasma display panel according to claim 3, wherein all the second ribs on the red line are removed.

5. The plasma display panel according to claim 3, wherein all of the second ribs on the red and blue lines are removed.

6. The plasma display panel according to claim 3, wherein the second ribs on the red line are removed every predetermined number.

7. The plasma display panel according to claim 3, wherein the second ribs on the red and blue lines are removed every predetermined number.

8. The plasma display panel according to claim 3, wherein a height of the second rib on the red line is lowered.

9. The plasma display panel according to claim 3, wherein a height of the second rib on the red and blue lines is lowered.

10. The plasma display panel according to claim 3, wherein an exhaust path is provided in the second rib.