KR100658322B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel that can increase the phosphor coating area and improve efficiency and color temperature characteristics by changing the partition structure.

The present invention is a plasma display having a front substrate for displaying an image and a rear substrate arranged parallel to the front substrate at regular intervals, and having a partition wall for forming a plurality of discharge space cells on the rear substrate. In the panel, the partition wall is provided with a plasma display panel characterized in that the irregular shape.

Bulkhead structure, horizontal bulkhead, vertical bulkhead, irregularities, color temperature

Description

Plasma Display Panel {Plasma Display Panel}

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

2A and 2B illustrate stripe-type barrier rib structures of a conventional plasma display panel.

3A and 3B illustrate a lattice type barrier rib structure of a conventional plasma display panel.

Figure 3c is a view showing a honeycomb arrangement partition structure of a conventional plasma display panel.

4 is a view showing that the discharge space of the discharge cell B of the conventional plasma display panel is formed wider than the discharge space of the R and G discharge cells.

FIG. 5A illustrates a partition structure of a plasma display panel in accordance with a discharge cell structure according to a first embodiment of the present invention. FIG.

5b shows a second embodiment according to the invention;

Fig. 5C shows a third embodiment according to the present invention.

5d and 5e show a fourth embodiment and a fifth embodiment according to the present invention;

6 is a view showing that the partition wall of the discharge cell B according to the present invention has a greater degree of unevenness than the partition walls of the R and G discharge cells.

 ***** Explanation of symbols for the main parts of the drawing *****

210, 310: bulkhead 220, 320, 420: bus electrode

230, 330, 430: transparent electrode 520: horizontal bulkhead

540: vertical bulkhead

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

1 is a perspective view schematically showing the structure of a conventional plasma display panel. As shown in the PDP 100, the front substrate 10, which is the display surface on which an image is displayed, and the rear substrate 20 forming the rear surface are coupled in parallel with a predetermined distance.

The front substrate 10 has a sustain electrode 11 for maintaining light emission of a cell by mutual discharge in one pixel below, that is, a transparent electrode 11a formed of a transparent ITO material and a bus electrode 11b made of a metal material. The sustain electrodes 11 are formed in pairs.

The sustain electrode 11 is covered by a dielectric layer 12 which limits the discharge current and insulates the electrode pairs, and deposits magnesium oxide (MgO) on the upper surface of the dielectric layer 12 to facilitate the discharge condition. The protective layer 13 is formed.

In the rear substrate 20, a plurality of discharge spaces, that is, partitions 21 for forming a cell are arranged in parallel with each other, and a vacuum ultraviolet ray is generated by performing address discharge at a portion crossing the sustain electrode 11. A plurality of address electrodes 22 are formed.

In addition, an upper surface of the rear substrate 20 is coated with R, G, and B fluorescent layers 23 that emit visible light for image display during address discharge, and the outer surface of the front substrate 10 is formed on the upper surface of the partition wall. The black matrix 21a is formed by arranging a light blocking function that absorbs external light to reduce reflection and improves color purity and contrast of the front substrate 10.

An inert gas such as He + Xe, Ne + Xe, He + Xe + Ne for gas discharge is injected into the discharge space provided between the front substrate 10, the rear substrate 20, and the partition wall 21.

As described above, the partition walls 21 for forming a plurality of discharge spaces, that is, cells on the rear substrate 20 are arranged to be parallel to each other, and the partition walls 21 have a luminance characteristic, an exhaust characteristic, a phosphor coating area, and the like. It is designed in various ways.

2A and 2B illustrate stripe-type barrier rib structures of a conventional plasma display panel. As shown, in the stripe-type partition wall structure, the partition wall 210 is arranged in a stripe shape while being perpendicular to the sustain electrode formed of the bus electrode 220 and the transparent electrode 230.

The stripe-type partition wall structure is a stripe-shaped partition wall structure, and the manufacturing process is simple. However, there is a problem in that visible light generated at the time of discharge leaks in the stripe direction of the partition wall, and phosphor printing and exhausting are easy, but there are problems in that misdischarge and phosphor coating area affecting adjacent cells are small.

3A and 3B illustrate a lattice-shaped partition wall structure of a conventional plasma display panel. As illustrated, the partition wall 310 is arranged in a grid shape while being horizontal or vertical with the sustain electrode formed of the bus electrode 320 and the transparent electrode 330. 3C is a view illustrating a honeycomb arrangement partition structure of a conventional plasma display panel.

Such a lattice partition structure and a honeycomb arrangement partition structure can designate each color cell, thereby improving luminance, blocking leakage light, and preventing crosstalk in all directions.

However, the lattice-type bulkhead structure and the honeycomb-type bulkhead structure are difficult to manufacture due to the complicated manufacturing process. In addition, although the influence of the adjacent cells is small and the coating area of the phosphor is large, the luminance can be increased, but there is a problem in that the exhaust is not good.

In such a stripe structure, a lattice structure and a honeycomb arrangement structure, the discharge space of the B discharge cells is formed wider than that of the R and G discharge cells.

4 is a view showing that the discharge space of the discharge cell B of the conventional plasma display panel is wider than the discharge space of the R and G discharge cells. As shown, sustain electrodes formed of bus electrodes 420 and transparent electrodes 430 are arranged on upper and lower portions of the R, G, and B discharge cells.

At this time, the discharge space of the B discharge cell is formed relatively wider than the discharge space of the R and G discharge cells. In order to increase the color temperature of the B discharge cells, the discharge space of the B discharge cells is formed wider than the discharge spaces of the R and G discharge cells. However, when the discharge space of the B discharge cell is formed wide, the luminance of the R and G discharge cells is relatively decreased.

Such a stripe-type, grid-type, and honeycomb-type partition wall structure has a color temperature of B discharge cells relatively lower than that of R and G discharge cells, making it difficult to express an image to be realized.

Therefore, the present invention controls the color temperature of the R, G, B discharge cells by changing the partition structure formed in the plasma display panel. In addition, a low discharge B discharge cell has an object of providing a plasma display panel that can increase the phosphor coating area and improve efficiency and color temperature characteristics by increasing the degree of irregularities of the partition wall.

Technical solution of the present invention for achieving the above object of the present invention has a front substrate for displaying an image and a rear substrate arranged in parallel at a predetermined interval with the front substrate, a plurality of discharge spaces on the rear substrate A plasma display panel having partitions for forming R, G, and B discharge cells, wherein the partitions have a concave-convex shape, and the concave-convex portions of the partition walls in at least one discharge cell of the R, G, B discharge cells are formed. The degree is different from the degree of unevenness of the partition wall in the remaining discharge cells of the R, G, B discharge cells. In addition, the concave-convex shape is characterized in that it comprises at least one of the 'wavy', 'triangle' and 'square'. In addition, the partition wall of the B discharge cells of the concave-convex than the partition walls of the R and G discharge cells. It is characterized by a severe degree.

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

5A is a diagram illustrating a partition structure of a plasma display panel having a discharge cell structure according to a first embodiment of the present invention. As shown, the barrier rib structure includes a horizontal barrier rib 520 and a vertical barrier rib 540. The horizontal bulkhead 520 has a concave-convex shape having a triangular shape and is formed of protrusions and recesses. In addition, the vertical partition 540 has a concave-convex shape having a square shape and is formed of a protrusion and a concave portion.

As described above, since the horizontal bulkhead 520 and the vertical bulkhead 540 have an uneven shape, the phosphor coating area increases.

5B is a view showing a second embodiment according to the present invention. As shown, the barrier rib structure includes a horizontal barrier rib 520 and a vertical barrier rib 540. The structure of the transverse bulkhead 520 and the structure of the vertical bulkhead 540 are both irregular and 'corrugated' and are formed of protrusions and recesses.

As described above, since the horizontal bulkhead 520 and the vertical bulkhead 540 have an uneven shape, the phosphor coating area increases.

Figure 5c is a diagram showing a third embodiment according to the present invention. As shown, the barrier rib structure includes a horizontal barrier rib 520 and a vertical barrier rib 540. The structure of the transverse bulkhead 520 and the structure of the vertical bulkhead 540 are both formed as protrusions and concave portions having irregular shapes of 'triangular shape'.

As described above, since the horizontal bulkhead 520 and the vertical bulkhead 540 have an uneven shape, the phosphor coating area increases.

5D and 5E show a fourth embodiment and a fifth embodiment according to the present invention. As shown, the barrier rib structure includes a horizontal barrier rib 520 and a vertical barrier rib 540. Only one of the structure of the transverse bulkhead 520 and the structure of the vertical bulkhead 540 has a concave-convex shape having a 'square shape' and is formed of protrusions and recesses.

As described above, since the horizontal bulkhead 520 and the vertical bulkhead 540 have an uneven shape, the phosphor coating area increases.
As described above, in the structure of the partition wall, the shape of the unevenness includes at least one of 'wave shape', 'triangle shape' and 'square shape'.
In addition, the shape of such unevenness is at least one discharge cell of the R, G, B discharge cells is different degree of unevenness of the partition wall, which will be described with reference to FIG.

6 is a diagram showing that the partition wall of the discharge cell B according to the present invention has a greater degree of unevenness than the partition walls of the R and G discharge cells as an example. As shown, sustain electrodes formed of bus electrodes 420 and transparent electrodes 430 are arranged on upper and lower portions of the R, G, and B discharge cells.

At this time, the partition wall of the B discharge cell is more severe than the partition walls of the R and G discharge cells. This is because the characteristics of the B phosphors are not as good as those of the R and G phosphors, thereby increasing the degree of irregularities in the partition walls of the B discharge cells, thereby making the phosphor coating area larger than that of the R discharge cells and the G discharge cells, thereby increasing the luminance and color temperature. It is to let.

Thus, the color temperature is adjusted according to the degree of irregularities of the partition walls of the R, G, B discharge cells.
Accordingly, as shown in the drawing, the unevenness of the partition walls of the B discharge cells is greater than the partition walls of the R and G discharge cells, thereby making the area of the B phosphor larger than the phosphor areas of the R and G discharge cells.
Therefore, the brightness and color temperature characteristics of the relatively weak B phosphor can be improved to achieve a white balance.

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 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 controls the color temperature of the R, G, B discharge cells of the plasma display panel. In addition, the B discharge cell with low luminance has an effect of increasing the phosphor coating area and improving efficiency and color temperature characteristics by increasing the degree of irregularities of the partition wall.

Claims (4)

A plasma having a front substrate for displaying an image and a rear substrate arranged parallel to the front substrate at regular intervals and having partition walls for forming a plurality of discharge spaces R, G, and B discharge cells on the rear substrate. In the display panel, The partition wall may have a concave-convex shape, and the degree of concavities and convexities in the at least one discharge cell among the R, G, and B discharge cells is different from the degree of concavities and convexities in the remaining discharge cells among the R, G, and B discharge cells. Plasma display panel, characterized in that. The method of claim 1, The concave-convex shape includes at least one of a 'wave shape', a 'triangle shape' and a 'square shape'. delete The method of claim 1, The partition wall of the discharge cell B is characterized in that the degree of unevenness is greater than the partition walls of the R and G discharge cells.

Images