KR100351821B1 - Plasma display panel - Google Patents

Abstract

The present invention is to provide a plasma display panel which can prevent a decrease in luminance at the edge of the discharge region and improve the exhaust capacity. The plasma display panel of the present invention uses ultraviolet rays emitted by excitation of the phosphor layer. A plasma display panel for discharging a cell, comprising: a plurality of upper electrode pairs formed in one direction on a first substrate, and a plurality of upper electrode pairs formed in a direction crossing the upper electrode pairs on a second substrate and having a predetermined distance from each other; First barrier ribs, auxiliary barrier ribs formed on both sides of the first barrier ribs, and a second barrier rib formed at a boundary between an upper and lower cells and having a larger width from a central portion toward the first barrier rib and separated from the first barrier ribs And between the first barrier ribs and formed in a direction crossing the upper electrode pairs. It is configured to include the address electrode.

Description

Plasma Display Panel {PLASMA DISPLAY PANEL}

The present invention relates to a plasma display panel, and more particularly, to a partition structure of a plasma display panel suitable for improving luminous efficiency and exhaust capacity.

In general, a plasma display panel (PDP), which is a gas discharge display device, has a DC type, an AC type, and a hybrid type in which a DC type and an AC are combined according to the electrode structure thereof. Classified as The direct current type and the alternating current type are determined by whether the electrode is exposed to the discharge plasma. That is, in the direct current type, the electrode is directly exposed to the discharge plasma, and in the alternating current type, the electrode is indirectly coupled with the plasma through the dielectric. This difference appears as a difference in discharge phenomenon, and in the case of an alternating current type, charged particles formed by the discharge accumulate in the dielectric layer. In other words, electrons are accumulated in the dielectric layer on the positively charged electrode, and ions are accumulated in the dielectric layer on the negatively charged electrode.

1 is a layout diagram of a typical three-electrode surface discharge AC plasma display panel.

As shown in FIG. 1, the front substrate 1 and the rear substrate 1a are formed, and the Y electrode 2 and the Z electrode 3 are formed in the row direction, and the Y electrode 2 and the Z electrode are formed. The X electrode 4 is formed in the direction intersecting with (3).

The cell 5 is formed at the intersection of each electrode, the Y electrode 2 is used as a scan electrode, and used for scanning the screen, and the Z electrode 3 is used as a sustain electrode. It is used to maintain the discharge. The X electrode 4 is used for data input.

The X electrode 4 formed in each cell is connected to the X electrode driver to receive an address, and the Y electrode 2 is connected to the Y electrode driver to receive a scan voltage. The Z electrode 3 is connected to the Z electrode driver to receive a sustain voltage.

The X electrode 4, the Y electrode 2, and the Z electrode 3 are formed in a matrix form.

Hereinafter, a conventional plasma display panel having a barrier rib structure will be described with reference to the accompanying drawings.

FIG. 2A is a layout diagram of a plasma display panel according to a first exemplary embodiment, and employs a stripe type partition wall.

As shown in FIG. 2A, a plurality of pairs of upper electrode pairs formed of the Y electrode 11 and the Z electrode 12 are formed in a row direction at regular intervals, and are formed in a direction crossing the upper electrode pairs and fixed to each other. Stripe-type partitions 13 having a spacing are formed, and an X electrode (not shown) is formed at the central portion between the partitions and the partitions.

Reference numeral 21 denotes a discharge area, and 22 denotes a discharge zone.

FIG. 2B is a cross-sectional view taken along the line II ′ of FIG. 2A. An upper electrode pair composed of the Y electrode 11 and the Z electrode 12 is formed on the front substrate 10 and the front surface including the upper electrode pair. The first dielectric layer 15 is formed on the substrate 10, and the X electrode 14 is formed on the rear substrate 10a facing the front substrate 10 in a direction crossing the upper electrode pairs. The second dielectric layer 16 is formed on the back substrate 10a including the X electrode 14, and the partitions 13 are formed on both sides thereof at a predetermined distance from the X electrode to prevent crosstalk between adjacent X electrodes. The phosphor layer 17 is formed on the partition 13 and the second dielectric layer 16.

Here, the partition 13 is a stripe type.

As shown in FIG. 2B, the first embodiment of the related art is located at a lower distance from the discharging region 22 to the phosphor layer 18 on the X electrode 11. Since the distance to the phosphor layer 18 in the lower portion of the partition 13 is longer than that of the distance, loss occurs while the ultraviolet rays generated by the discharge reach the lower portion of the partition wall.

3 is a layout diagram of a plasma display panel according to a second exemplary embodiment employing a well type partition structure.

The arrangement of the electrodes is similar to that of FIG. 2A. However, in FIG. 2A, the partition wall is formed only in the direction crossing the upper electrode pair, whereas the plasma display panel shown in FIG. 3 is formed in the direction crossing the upper electrode pair. The horizontal partition 13a is also formed in the direction in which the upper electrode pairs are formed.

For reference, a partition wall formed in a direction crossing the upper electrode pair is referred to as a vertical partition wall 13, and a partition wall formed in the same direction as the upper electrode pair is referred to as a horizontal partition wall 13a.

As can be seen from the layout diagram shown in FIG. 3, even when the well-type partition wall is employed, it can be seen that the four corner portions of the discharge region 21 are located far from the kitchen region 22.

The reason for employing the well-type partition walls is that when the stripe-type partition walls are employed, losses may occur and be wasted while the ultraviolet rays reaching the cell boundary portions are discharged.

That is, the ultraviolet rays generated by forming the horizontal partition wall 13a together with the vertical partition wall 13 may excite the phosphor formed on the horizontal partition wall to generate visible light, thereby preventing the waste of ultraviolet rays as much as possible. Cross talk could be prevented.

However, the plasma display panel according to the related art has the following problems.

First, the structure employing the stripe-type partition wall is easy to exhaust, but because of the ultraviolet light and visible light can move to the adjacent cell in the vertical direction, thereby causing mis-discharge and cross talk. In addition, since the edge portion of the discharge region is far from the discharging region, the luminance decreases.

Secondly, the structure employing the well-type partition wall can prevent cross talk between adjacent cells, but there is a risk of erroneous discharge caused by residual gas due to poor exhaust, and the edge of the discharge area is far from the kitchen area. Because of the separation, the brightness deterioration could not be prevented as in the structure employing the stripe type partition wall.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object thereof is to provide a plasma display panel which can prevent a decrease in luminance at an edge portion of a discharge area and improve an exhaust capacity.

1 is a layout of a typical three-electrode surface discharge AC plasma display panel

2A is a layout diagram of a plasma display panel according to a first embodiment of the present invention.

FIG. 2B is a cross-sectional view taken along the line II ′ of FIG. 2A

3 is a layout diagram of a plasma display panel according to a second embodiment;

4A is a layout diagram of a plasma display panel according to the present invention;

FIG. 4B is a detailed configuration diagram of the partition wall shown in FIG. 4A

5 is a cross-sectional view taken along the line II ′ of FIG. 4A.

6 is a view showing another embodiment of the auxiliary partition wall according to the present invention;

7a to 7c show another embodiment of a transverse bulkhead according to the present invention.

Explanation of symbols for main parts of the drawings

41: X electrode 42: Y electrode

43: first partition 43a: secondary partition

43b: second partition wall 47: phosphor layer

A plasma display panel of the present invention for achieving the above object is a plasma display panel for discharging a cell by using ultraviolet light emitted by excitation of the phosphor layer, and a plurality of upper electrode pairs formed in one direction on the first substrate; And a plurality of first barrier ribs formed in a direction crossing the upper electrode pairs on a second substrate and having a predetermined distance therebetween, auxiliary barrier ribs formed on both sides of the first barrier ribs, and a boundary between an upper and lower cells. And a plurality of second bulkheads having a larger width toward the first bulkhead from the central portion and separated from the first bulkheads, and formed between the first bulkheads and crossing the upper electrode pairs. And electrodes.

First, the plasma display panel of the present invention can increase the discharge efficiency by allowing the edge portion of the discharge area to be as close as possible to the kitchen area, and is characterized in that high brightness can be realized.

Hereinafter, a plasma display panel of the present invention will be described with reference to the accompanying drawings.

4A is a layout diagram of the plasma display panel of the present invention, and FIG. 4B illustrates the partition wall of FIG. 4A in more detail.

First, as shown in FIG. 4A, the plasma display panel of the present invention includes upper electrode pairs formed in one direction and composed of a Y electrode 41 and a Z electrode 42 on a first substrate, and the upper electrode on a second substrate. Corresponding between the first partition walls 43 formed in the direction crossing the pairs and having a predetermined distance from each other, the auxiliary partition walls 43a formed on both sides of the first partition walls 43, and the upper electrode pairs. Is formed on the second substrate and includes second partitions 43b having a larger width toward the first partition 43.

Herein, reference numeral 51 denotes a discharging region, and the second partitions 43b are separated from the first partition 43 and have a round shape toward an adjacent upper electrode pair.

In addition, as shown in FIG. 4B, not only the edge portion of the lower portion of the first partition 43 may be as close as possible to the kitchen area due to the auxiliary partitions 43a formed on both sides of the first partitions 43. By separating the first partition 43 and the second partition 43b from each other, the separated space is used as the exhaust passage to maximize the exhaust capacity.

5 is a cross-sectional view of the plasma display panel of the present invention, taken along line II ′ of FIG. 4A.

As shown in FIG. 5, upper electrode pairs including the Y electrode 41 and the Z electrode 42 on the front substrate 40 and a first electrode formed on the front substrate 40 including the upper electrode pairs. A dielectric layer 45, an X electrode 44 formed on the rear substrate 40a facing the front substrate 40, and a second dielectric layer formed on the rear substrate 40a including the X electrode 44 ( 46 and first partitions 43 formed on the second dielectric layer 46 with a predetermined distance therebetween and formed on both sides of the first partition walls 43 and formed in a direction crossing the upper electrode pairs. And the phosphor layer 47 formed on the second dielectric layer 46 including the partition walls 43a and the auxiliary partition walls 43a.

Here, reference numeral “48” denotes a discharge region, and the auxiliary partitions 43a are formed at both sides of the first partitions 43, and the lower partitions are patterned to a greater width than the upper partitions. 43) Induces the effect that the lower edge portion as close as possible to the kitchen area (51).

For reference, the front substrate of FIG. 5 is rotated 90 ° for easy description.

On the other hand, instead of having a round shape on both sides of the first partition 43, the auxiliary partition 43a can be patterned in a predetermined width and width at the edge portion of the lower part of the first partition 43.

That is, as shown in FIG. 6, an auxiliary partition 43a having a predetermined width and width is formed on both edge portions of the lower portion of the first partition 43 so that the edge portion is closer to the kitchen area 51. To lose.

7A to 7C change the shape of the second partition 43b. As shown in FIG. 7A, the center portion of the second partition is divided in the X-axis (length direction) or as shown in FIG. 7B. It is possible to divide the central portion of the partition wall in the Y axis (width direction) or in the X axis and the Y axis, respectively, as shown in Fig. 7C.

Thus, dividing the second partition 43a into the X-axis or the Y-axis or the X-axis and the Y-axis is for securing the exhaust passage to the maximum to improve the exhaust capability.

As described above, the plasma display panel of the present invention has the following effects.

First, in employing a well-type partition wall, the lower part of the vertical partition wall and the horizontal partition wall is patterned wider than the upper part so that the edge portion of the lower partition walls can be as close as possible from the kitchen area. The ultraviolet light may be prevented from disappearing while reaching the edge portions of the partition walls, thereby increasing brightness.

Second, by separating the vertical bulkheads and the horizontal bulkheads, and by dividing the horizontal bulkheads again into a plurality of to secure the exhaust passage, it is possible to improve the exhaust capacity to prevent the mis-discharge caused by the residual gas.

Claims (10)

In the plasma display panel comprising a first substrate and a second substrate, Upper electrode pairs formed in one direction on the first substrate; A first dielectric layer formed on the first substrate including the upper electrode pairs; Lower electrodes formed on a second substrate in a direction crossing the upper electrode pairs; A second dielectric layer formed on a second substrate including the lower electrodes; First barrier ribs formed parallel to the lower electrode with the lower electrodes interposed between the first substrate and the second substrate; A phosphor layer formed on the second dielectric layer including the first partition wall; And a second partition wall formed at an upper / lower discharge cell boundary so that its width increases from a central portion toward the first partition walls on both sides and is separated from the first partition walls on both sides. . The plasma display panel of claim 1, wherein the second barrier ribs have a larger width toward a lower portion thereof. 3. The plasma display panel of claim 2, wherein the second barrier ribs have a rounded surface facing the upper electrode pair. The plasma display panel of claim 1, wherein the second partition walls are divided in a longitudinal direction or a width direction or a longitudinal direction and a width direction. delete The plasma display panel of claim 5, wherein the auxiliary barrier ribs are formed to have round shapes at both sides of the first barrier ribs. delete The plasma display panel of claim 1, wherein auxiliary barrier ribs are further formed on both sides of the first barrier ribs. The plasma display panel of claim 8, wherein the auxiliary barrier ribs are formed on both sides of the first barrier ribs with a larger area than the upper portion thereof. The plasma display panel of claim 8, wherein the auxiliary barrier ribs are formed at lower ends of both side surfaces of the first barrier ribs at lower heights than the first barrier ribs.