KR100784561B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel having an improved discharge cell structure, wherein the discharge cell of the plasma display panel has a longer length in the horizontal direction than the length in the vertical direction, which is a problem of the long gap and the ITO-less structure of the discharge cell. The lowering of the luminance and the lower power consumption also have the effect of increasing efficiency.

According to the present invention, a length in a first direction parallel to the address electrode is formed between a scan substrate and a rear substrate on which an address electrode intersecting the scan electrode and the sustain electrode is spaced apart from the front substrate on which the scan electrode and the sustain electrode are parallel to each other by a predetermined distance. And a partition wall partitioning the plurality of discharge cells shorter than a length in a second direction parallel to the scan electrode and the sustain electrode.

Description

Plasma Display Panel

1 is a plan view showing a discharge cell structure of a conventional plasma display panel.

2 is a plan view showing an electrode structure in a discharge cell of a conventional plasma display panel.

3A and 3B illustrate an embodiment of an ITO-less structure according to the prior art.

4 is a perspective view showing the structure of a plasma display panel according to a first embodiment of the present invention;

FIG. 5 is a view for explaining a discharge cell structure having a longer length in a horizontal direction than a length in a vertical direction of a plasma display panel of the present invention; FIG.

Fig. 6 is a diagram in which discharge cells having a length longer in the horizontal direction than the length in the vertical direction of the present invention are arranged in the delta type.

FIG. 7 is a diagram showing an ITO-less structure of a discharge cell having a longer transverse length than a longitudinal length of the present invention. FIG.

Fig. 8 is a view for explaining the mode of discharge in a discharge cell having a longer horizontal length than the vertical length of the present invention.

9 is a perspective view of a plasma display panel according to a second embodiment of the present invention.

10 is a view for explaining another embodiment of a discharge cell structure in which a horizontal length is longer than a vertical length of a plasma display panel of the present invention.

FIG. 11 is a view for explaining another embodiment of a discharge cell structure in which a horizontal length is longer than a vertical length of a plasma display panel of the present invention. FIG.

<Explanation of symbols for main parts of the drawings>

200: front panel 202: scan electrode

203: sustain electrodes 204, 215: dielectric layer

205: protective layer 210: rear substrate

211: rear panel 212: bulkhead

213: address electrode 214: phosphor

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

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. Such a plasma display panel has a spotlight as a next generation display device because a thin and light configuration is possible.

1 is a plan view showing a discharge cell structure of a conventional plasma display panel.

As shown in FIG. 1, in the conventional plasma display panel, the discharge cells divided into the horizontal barrier rib 100 and the vertical barrier rib 101 are formed in a rectangular type having a longitudinal direction longer than the horizontal direction. In addition, the discharge cells include red (R) discharge cells 102, green (G) discharge cells 103, and blue (B) discharge cells 104.

An electrode structure of a plasma display panel having such a discharge cell structure is illustrated in FIG. 2.

2 is a plan view showing an electrode structure in a discharge cell of a conventional plasma display panel.

As illustrated in FIG. 2, a scan electrode 105 and a sustain electrode 106 are formed in pairs to generate a discharge and maintain the discharge in a discharge cell of a conventional plasma display panel. In other words, the scan electrodes 105 and the sustain electrodes 106 are formed side by side to generate and maintain the discharges in the above-described R, G, B discharge cells 102, 103, 104, respectively.

In addition, the scan electrode 105 and the sustain electrode 106 include a transparent electrode a made of a transparent ITO material and a bus electrode b made of a metal material.

The form of discharge in the discharge cell of the conventional plasma display panel having such an electrode structure will be described with reference to FIG. 3.

3A and 3B illustrate an ITO-less technique, in which a bus electrode b for forming a discharge is conventionally formed in a discharge space 120 or on a partition (not shown). However, the former is shown in FIG. 3A. As described above, since the bus electrode b forming the discharge has a shape in which the discharge electrode 120 is located in the discharge space 120, the minimum amount of the bus electrode b is present, so that the transmittance decreases and the luminance is inevitably reduced. As shown in FIG. 3B, a gap Gap between the bus electrodes b is too wide to cause an increase in the discharge start voltage and the sustain voltage.

The present invention is to solve the above-mentioned problems, the conventional discharge cell is formed so that the horizontal length is longer than the length of the vertical direction to reduce the luminance of the conventional long discharge cell ITO-less structure An object of the present invention is to provide a plasma display panel that can improve and achieve a wide color representation.

The plasma display panel of the present invention for solving the above technical problem is spaced apart from the front substrate formed by the scan electrode and the sustain electrode parallel to each other by a predetermined distance between the rear substrate formed with the address electrode crossing the scan electrode and the sustain electrode And partition walls defining a plurality of discharge cells having a length in a first direction parallel to the address electrode shorter than a length in a second direction parallel to the scan electrode and the sustain electrode.

Further, the discharge cells form a delta type pixel, and the width in the vertical direction of the delta type pixel is 750 μm or more and 850 μm or less.

In addition, the plurality of discharge cells form a delta type pixel, the width in the vertical direction of the discharge cell located above the delta type pixel, and the discharge cell located above the delta type pixel and the delta type pixel. The sum of the widths in the longitudinal direction of the partition wall partitioning the discharge cells located at the lower portion is 355 µm or more and 455 µm or less.

In addition, the width of each of the discharge cells in the longitudinal direction is characterized by being 250 μm or more and 350 μm or less.

Moreover, it is 55 micrometers-155 micrometers of the longitudinal direction of a partition, It is characterized by the above-mentioned.

Moreover, it is 55 micrometers-155 micrometers of the transverse direction of a partition, It is characterized by the above-mentioned.

Moreover, the width of a scan electrode is 50 micrometers or more and 120 micrometers or less, It is characterized by the above-mentioned.

The sustain electrode has a width of 50 µm or more and 120 µm or less.

The width in the vertical direction of the region where the discharge cells and the scan electrodes overlap is 40 µm or more and 90 µm or less.

Moreover, the width | variety of the longitudinal direction of the area | region in which a discharge cell and the said sustain electrode overlaps is 40 micrometers-90 micrometers, It is characterized by the above-mentioned.

The discharge gap formed by the scan electrode and the sustain electrode in the discharge cell is 150 µm or more and 230 µm or less.

The partition wall may be a well type partition wall.

In addition, the scan electrode and the sustain electrode are characterized in that the metal electrode.

Hereinafter, with reference to the accompanying drawings, an embodiment of the present invention according to the configuration will be described.

4 is a perspective view showing the structure of the plasma display panel of the present invention.

As shown in FIG. 4, the plasma display panel of the present invention includes a front panel 200 and a rear panel 210. The front panel 200 and the rear panel 210 are coupled in parallel with a certain distance therebetween. The front panel 200 includes a plurality of sustain electrode pairs formed by pairing the scan electrode 202 and the sustain electrode 203 on the front substrate 201, which is a display surface on which an image is displayed. The rear panel 210 includes a plurality of address electrodes 213 on the rear substrate 211 forming the rear surface so as to intersect with the pair of sustain electrodes formed on the front substrate 201.

The front panel 200 includes a scan electrode 202, a sustain electrode 203, an upper dielectric layer 204, and a protective layer 205.

 The scan electrode 202 and the sustain electrode 203 include a transparent electrode (not shown) formed of a transparent ITO material and a bus electrode b made of a metal material.

At this time, in forming the scan electrode 202 and the sustain electrode 203, a bus electrode b made of opaque metal silver (Ag) is provided without using a transparent electrode (not shown) made of a transparent ITO material. Thereby mutually discharging in one discharge cell and maintaining light emission of the cell.

The upper dielectric layer 204 is formed of one or more to limit the discharge current of the scan electrode 202 and the sustain electrode 203 and to insulate the electrode pairs.

The protective layer 205 is formed by depositing magnesium oxide (MgO) on the upper dielectric layer 204 to facilitate discharge conditions.

The back panel 210 includes an address electrode 213, a lower dielectric layer 215, and a partition 212.

The partition 212 is formed to partition the plurality of discharge cells on the rear substrate 211. In this case, in forming the barrier rib 212, a plurality of discharge cells may be divided to have a length in a first direction parallel to the address electrode 213 shorter than a length in a second direction parallel to the scan electrode 202 and the sustain electrode 203. The partitions are formed. In this case, the first direction is preferably a vertical direction, and the second direction is preferably a horizontal direction.

As described above, the barrier rib 212 has a short length in the vertical direction in which the address electrode 231 is formed, and a long length in the horizontal direction in which the scan electrode 202 and the sustain electrode 203 are formed. As a result, the partition wall 212 is formed to have a longer length in the horizontal direction than the length in the vertical direction. These discharge cells are arranged in a delta type (delta rype).

The phosphor 214 is coated in a discharge cell in which the length of the scan electrode 202 and the sustain electrode 203 is longer than the length of the address electrode 213. Preferably, R, G, and B phosphors are coated in the discharge cells having a longer length in the transverse direction than the length in the longitudinal direction.

The address electrode 213 is formed to intersect the scan electrode 212 and the sustain electrode 213 described above.

The lower dielectric layer 215 protects the address electrode 213 between the address electrode 213 and the phosphor 214.

Thus, in the plasma display panel having the discharge cell structure having a longer length in the horizontal direction than the length in the vertical direction, the discharge cell structure having a longer length in the horizontal direction than the length in the above-mentioned vertical direction is described in more detail with reference to FIG. 5. Looking at it as follows.

5 is a view for explaining in more detail the discharge cell structure having a longer horizontal length than the longitudinal length of the plasma display panel of the present invention.

Referring to FIG. 5, the partition wall of the plasma display panel of the present invention is formed to have a longer length in the horizontal direction than the length in the vertical direction. In addition, the width | variety d4 of a longitudinal partition wall is formed in 55 micrometers or more and 155 micrometers or less. In addition, the width | variety d4 'of the horizontal direction partition wall is formed in 55 micrometers or more and 155 micrometers or less.

The width d1 of the longitudinal length of the discharge cell (not shown) formed between the partitions (not shown) is formed in 250 micrometers or more and 350 micrometers or less. In addition, the length of the discharge cell (not shown) in the horizontal direction should be longer than the length in the vertical direction.

Here, the vertical width d2 of one block of discharge cells (not shown) is formed to be 355 µm or more and 455 µm or less.

The unit pixel vertical length width d3 of the R, G, and B discharge cells is 750 µm or more and 860 µm or less, including the width d4 of the partition wall.

In the plasma display panel of the present invention, discharge cells having a longer length in the horizontal direction than the length in the vertical direction are preferably arranged in a delta type, which will be described with reference to FIG. 6.

6 is a diagram in which discharge cells longer in the horizontal direction than the length in the vertical direction of the present invention are arranged in the delta type.

As shown in FIG. 6, the R discharge cell 301, the G discharge cell 302, and the B discharge cell 303 are each formed to have a longer length in the horizontal direction than a length in the vertical direction. The R discharge cells 301 and B discharge cells 303 are arranged adjacent to each other with a partition 321 having a short vertical direction therebetween. Further, the G discharge cell 302 is formed on the middle portion of the B discharge cell 303 in the middle portion of the R discharge cell 301, and furthermore, the G discharge cell 302 and the R discharge cell 301 and the B discharge cell ( A partition 322 having a long horizontal direction is also formed between the 302.

In addition, the positions of the R discharge cell 301, the G discharge cell 302, and the B discharge cell 303 may be changed.

In this way, the discharge cells longer in the horizontal direction than in the longitudinal direction are arranged in the delta type. In addition, the areas of the R discharge cells 301, G discharge cells 302, and B discharge cells 303 are preferably formed in the same manner.

An electrode structure for generating a discharge in a discharge cell having a length longer in the horizontal direction than the length in the vertical direction will be described with reference to FIG. 7.

7 is a view showing an ITO-less structure of a discharge cell having a longer length in the lateral direction than the length in the longitudinal direction of the present invention.

Referring to FIG. 7, in the structure in which discharge cells having a longer horizontal length than a vertical length are arranged in a delta type, the scan electrode 310 and the sustain electrode 311 face each other in the discharge cell. It is preferred that they are formed apart in width. Accordingly, display discharge can be more easily generated. Here, the scan electrode 310 and the sustain electrode 311 is made of a bus electrode (b) made of opaque metal silver (Ag) using ITO-less.

Here, the bus electrode b made of opaque metal silver (Ag) has a width d5 of the scan electrode 310 and the sustain electrode 311 of 50 μm to 120 μm.

In addition, the scan electrode 310 made of opaque metal silver (Ag) has a width d6 of 40 μm or more into the discharge cells of the G discharge cells 302, R discharge cells 301, and B discharge cells 303. It is formed in micrometers or less.

In addition, the sustain electrode 311 made of opaque metal silver (Ag) is separated from the scan electrode 310 by a predetermined width to discharge the G discharge cells 302, the R discharge colors 301, and the B discharge cells 303. It is formed to face the scan electrode 310 inside the cell, and the width of the sustain electrode 311 is the same as the width d6 of the scan electrode 310.

Here, the scan electrode 310 and the sustain electrode 311 formed of the opaque metal silver (Ag) are formed to have a width d7 of 20 μm or more and 60 μm or less on a partition wall (not shown) having a long horizontal direction.

The discharge gap d8 formed by the scan electrode 310 and the sustain electrode 311 inside the discharge cell is formed to be 150 µm or more and 230 µm or less.

Referring to FIG. 8, a form of discharge in a discharge cell having a length longer in a horizontal direction than a length in a vertical direction of the plasma display panel having the electrode structure is as follows.

8 is a view for explaining the form of discharge in the discharge cell longer than the longitudinal length of the present invention. Here, FIG. 8 will be described with reference to the above-described ITO-less structure of FIG. 7 as an example of the discharge of the present invention.

Referring to FIG. 8, the discharge cell 300 of the plasma display panel of the present invention has a length in a first direction parallel to the address electrode 320 than a length in a second direction parallel to the scan electrode 310 and the sustain electrode 311. Short compartment At this time, it is preferable that a 1st direction is a longitudinal direction, and a 2nd direction is a horizontal direction. In addition, the scan electrode 310 and the sustain electrode 311 which are formed to face each other in the discharge cell 300 having a longer length in the horizontal direction than the length in the vertical direction are mainly interposed between the bus electrodes formed of opaque metal silver (Ag). The display discharge occurs, where the discharge path in the discharge cell 300 having a longer length in the horizontal direction than the length in the vertical direction is relatively long as shown in FIG. It will be widened. In addition, the gap between the bus electrodes formed of the opaque metal silver (Ag) is narrowed in the scan electrode 310 and the sustain electrode 311 to solve the problem of increasing the discharge start voltage and the sustain voltage.

In the above description, the width of each of the discharge cells having a longer length in the horizontal direction than the length in the vertical direction is the same. In addition, the above-described discharge cell arrangement is related to a plasma display panel arranged in a delta type or applicable to a discharge cell arranged in a well type.

9 is a perspective view of a plasma display panel according to a second embodiment of the present invention. As shown in FIG. 9, the plasma display panel according to the second embodiment of the present invention includes a front panel 200 and a rear panel 410. The front panel 200 and the rear panel 400 are coupled in parallel with a certain distance therebetween. The front panel 200 includes a plurality of sustain electrode pairs formed by pairing a scan electrode 402 and a sustain electrode 403 on the front substrate 401 which is a display surface on which an image is displayed. The rear panel 410 includes a plurality of address electrodes 413 on the rear substrate 411 forming the rear surface so as to intersect with the pair of sustain electrodes formed on the front substrate 401.

The front panel 400 includes a scan electrode 402, a sustain electrode 403, an upper dielectric layer 404 and a protective layer 405.

The scan electrode 402 and the sustain electrode 403 have a bus electrode b made of a metal material to mutually discharge in one discharge cell and maintain light emission of the cell.

The upper dielectric layer 404 is formed of one or more to limit the discharge current of the scan electrode 402 and the sustain electrode 403 and to insulate the electrode pairs.

The protective layer 405 is formed by depositing magnesium oxide (MgO) on the upper dielectric layer 404 to facilitate the discharge conditions.

The back panel 410 includes an address electrode 413, a lower dielectric layer 415, and a partition 412.

The partition wall 412 is formed to partition the plurality of discharge cells formed on the rear substrate 411 and is formed to have a longer length in the horizontal direction than the length in the vertical direction. As a result, the length in the horizontal direction of the discharge cell is longer than the length in the vertical direction. These discharge cells are arranged in well type.

The phosphor 414 is coated in a discharge cell having a longer length in the horizontal direction than the length in the vertical direction. Preferably, R, G, and B phosphors are coated in the discharge cells having a longer length in the transverse direction than the length in the longitudinal direction.

The address electrode 413 is formed to intersect the scan electrode 412 and the sustain electrode 413 described above.

The lower dielectric layer 415 protects the address electrode 413 between the address electrode 413 and the phosphor 414.

On the other hand, the discharge cells longer in the horizontal direction than the length in the longitudinal direction may have a variety of shapes.

FIG. 10 is a view for explaining another example of the discharge cell structure in which the horizontal length is longer than the vertical length. Referring to FIG. 10, the discharge cells formed in the plasma display panel of the present invention have a polygonal shape.

FIG. 11 is a view for explaining another example of a discharge cell structure in which a horizontal length is longer than a vertical length of the plasma display panel of the present invention. Referring to FIG. 11, the discharge cells formed in the plasma display panel of the present invention have a predetermined curvature. For example, it may be elliptical.

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

Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is shown for the claims below 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 luminance deterioration, which is a problem of the long gap of the discharge cell and the ITO-less structure in the plasma display panel, and thus, the power consumption through the low efficiency can be achieved.

Claims (13)

A front substrate on which scan electrodes and sustain electrodes are formed parallel to each other; A rear substrate spaced apart from the front substrate by a predetermined distance and having an address electrode intersecting the scan electrode and the sustain electrode; A partition wall between the front substrate and the rear substrate partitioning a plurality of discharge cells having a length in a first direction parallel to the address electrode shorter than a length in a horizontal direction in a second direction parallel to the scan electrode and the sustain electrode; Including, And a discharge gap formed between the scan electrode and the sustain electrode in the discharge cell is 150 µm or more and 230 µm or less. The method of claim 1 And the discharge cells form a delta type pixel, and a width in a vertical direction of the delta type pixel is 750 µm or more and 850 µm or less. The method of claim 1 The plurality of discharge cells form a delta type pixel, The width in the vertical direction of the discharge cell located above the delta type pixel, and the width in the longitudinal direction of the partition wall partitioning the discharge cell located above the delta type pixel and the discharge cell located below the delta type pixel. And a sum of 355 µm or more and 455 µm or less. The method according to any one of claims 1 to 3 And a width in the longitudinal direction of each of the discharge cells is 250 µm or more and 350 µm or less. The method according to any one of claims 1 to 3 And the width of the vertical partition wall is 55 µm or more and 155 µm or less. The method according to any one of claims 1 to 3 And the width of the horizontal partition wall is 55 µm or more and 155 µm or less. The method of claim 1 And a width of the scan electrode is 50 µm or more and 120 µm or less. The method of claim 1 The width of the sustain electrode is a plasma display panel, characterized in that 50㎛ or more and 120㎛ or less. The method of claim 1, And a width in the vertical direction of the region where the discharge cells overlap with the scan electrodes is 40 µm or more and 90 µm or less. The method of claim 1, And a width in the longitudinal direction of the region where the discharge cells overlap with the sustain electrode is 40 µm or more and 90 µm or less. delete The method of claim 1, The partition wall, And a well type partition wall. The method of claim 1, And the scan electrode and the sustain electrode are metal electrodes.

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