KR100862563B1 - Plasma display panel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, wherein at least one of the first electrode and the second electrode includes a main electrode and an auxiliary electrode, whereby the discharge efficiency is improved and the brightness of the image is improved. There is.

Such a plasma display panel according to an embodiment of the present invention comprises a front substrate on which first and second electrodes are parallel to each other, a rear substrate disposed to face the front substrate, and a discharge cell between the front substrate and the rear substrate. A partition wall is partitioned, and at least one of the first electrode and the second electrode includes a main electrode and an auxiliary electrode spaced apart from each other.

Description

Plasma Display Panel

1 is a view for explaining the structure of a plasma display panel according to an embodiment of the present invention.

FIG. 2 is a diagram for describing an image frame for implementing gray levels of an image in a plasma display panel according to an exemplary embodiment of the present invention. FIG.

3 is a view for explaining an example of an operation of a plasma display panel according to an embodiment of the present invention in a subfield included in an image frame;

4A to 4B are views for explaining the structures of the first electrode and the second electrode in more detail.

5A to 5B are views for explaining in detail the gap between the first electrode and the second electrode and the gap between the auxiliary electrode and the main electrode.

FIG. 6 is a diagram for explaining an example of another structure of the first electrode and the second electrode. FIG.

7 is a view for explaining an example of still another structure of a first electrode and a second electrode;

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

101: front substrate 102: first electrode

103: second electrode 104: upper dielectric layer

105: protective layer 111: back substrate

112: partition wall 113: third electrode

114: phosphor layer 115: lower dielectric layer

112a: second partition 112b: first partition

The present invention relates to a plasma display panel.

In general, a phosphor layer is formed in a discharge cell (Cell) partitioned by a partition, and a plurality of electrodes are formed in the plasma display panel.

The driving signal is supplied to the discharge cell through the electrode.

Then, the discharge is generated by the drive signal supplied in the discharge cell. Here, when discharged by a drive signal in the discharge cell, the discharge gas filled in the discharge cell generates vacuum ultraviolet rays, and the vacuum ultraviolet light emits the phosphor formed in the discharge cell to emit visible light. Generate. The visible light displays an image on the screen of the plasma display panel.

One embodiment of the present invention is to provide a plasma display panel having improved driving efficiency by improving the structure of at least one of the first electrode and the second electrode.

Plasma display panel according to an embodiment of the present invention for achieving the above object is a front substrate disposed with the first electrode and the second electrode parallel to each other, and the rear substrate and the front substrate and the rear substrate disposed to face the front substrate And a partition wall defining a discharge cell, wherein at least one of the first electrode and the second electrode includes a main electrode and an auxiliary electrode spaced apart from each other and parallel to each other.

In addition, the main electrode includes a transparent electrode and a bus electrode, and the auxiliary electrode includes a transparent electrode.

In addition, the width of the auxiliary electrode is 1/5 times or more 1/10 times the width of the main electrode.

In addition, the interval between the auxiliary electrode and the main electrode is one or more times two times or less of the width of the auxiliary electrode.

Also, the gap between the first electrode and the second electrode is larger than the gap between the auxiliary electrode and the main electrode.

In addition, the distance between the first electrode and the second electrode is 1.3 times or more and 2.5 times or less the distance between the auxiliary electrode and the main electrode.

In addition, the auxiliary electrode is closer to the center of the discharge cell than the main electrode.

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

1 is a view for explaining the structure of a plasma display panel according to an embodiment of the present invention.

Referring to FIG. 1, a plasma display panel according to an embodiment of the present invention may face the front substrate 101 and the front substrate 101 on which the first and second electrodes 102 and 103 are arranged in parallel with each other. The rear substrate 111 on which the third electrode 113 disposed and intersects the first electrode 102 and the second electrode 103 is disposed is bonded to each other.

Although not shown, at least one of the first electrode 102 or the second electrode 103 preferably includes a main electrode and an auxiliary electrode spaced apart from the main electrode by a predetermined distance.

Alternatively, although not illustrated, the number of the first electrodes 102 to which the scan signals are supplied in the address period of the subfield to be described later is preferably larger than the number of the second electrodes 103.

The first electrode 102 and the second electrode 103 will be described in more detail later.

On top of the front substrate 101 where the first electrode 102 and the second electrode 103 are disposed, a dielectric layer covering the first electrode 102 and the second electrode 103, for example, an upper dielectric layer 104, is provided. Can be arranged.

This upper dielectric layer 104 limits the discharge current of the first electrode 102 and the second electrode 103 and can insulate between the first electrode 102, Y and the second electrode 103, Z. have.

A protective layer 105 may be disposed on the upper surface of the upper dielectric layer 104 to facilitate a discharge condition. The protective layer 105 may include a material having a high secondary electron emission coefficient, such as magnesium oxide (MgO).

Meanwhile, an electrode, for example, a third electrode 113 is disposed on the rear substrate 111, and a dielectric layer covering the third electrode 113 is disposed on the rear substrate 111 on which the third electrode 113 is disposed. Dielectric layer 115 may be disposed.

The lower dielectric layer 115 may insulate the third electrode 113.

In addition, a partition 112 having a discharge space, that is, a stripe type, a well type, a delta type, a honeycomb type, and the like, which partitions a discharge cell, is formed on an upper portion of the lower dielectric layer 115. Can be arranged. Accordingly, red (R), green (G), and blue (B) discharge cells may be provided between the front substrate 101 and the rear substrate 111.

In addition, in addition to the red (R), green (G), and blue (B) discharge cells, white (W) or yellow (Yellow: Y) discharge cells may be further provided.

Meanwhile, although the widths of the red (R), green (G), and blue (B) discharge cells in the plasma display panel according to an embodiment of the present invention may be substantially the same, red (R) and green (G) may be substantially the same. And the width of at least one of the blue (B) discharge cells may be different from that of the other discharge cells.

For example, the width of the red (R) discharge cell is the smallest, and the width of the green (G) and blue (B) discharge cells can be made larger than the width of the red (R) discharge cell. Here, the width of the green (G) discharge cell may be substantially the same as or different from the width of the blue (B) discharge cell.

Then, the width of the phosphor layer 114 to be described later disposed in the discharge cell is also changed in relation to the width of the discharge cell. For example, the width of the blue (B) phosphor layer disposed in the blue (B) discharge cell is wider than the width of the red (R) phosphor layer disposed in the red (R) discharge cell, and at the same time in the green (G) discharge cell. The width of the green (G) phosphor layer disposed may be wider than the width of the red (R) phosphor layer disposed in the red (R) discharge cell.

Then, color temperature characteristics of the image to be implemented may be improved.

In addition, the plasma display panel according to the exemplary embodiment of the present invention may have not only the structure of the partition wall 112 shown in FIG. 1 but also the structure of the partition wall having various shapes. For example, the partition wall 112 includes a first partition wall 112b and a second partition wall 112a, where the height of the first partition wall 112b and the height of the second partition wall 112a are different from each other. Etc. may be possible.

In the case of the differential partition wall structure, the height of the first partition wall 112b among the first partition wall 112b or the second partition wall 112a may be lower than the height of the second partition wall 112a.

Meanwhile, although FIG. 1 shows and describes each of the red (R), green (G), and blue (B) discharge cells arranged on the same line, it may be arranged in a different shape. For example, a delta type arrangement in which red (R), green (G) and blue (B) discharge cells are arranged in a triangular shape may be possible. In addition, the shape of the discharge cell may also be a variety of polygonal shapes, such as pentagonal, hexagonal, as well as rectangular.

In addition, in FIG. 1, only the case where the partition wall 112 is formed on the rear substrate 111 is illustrated, but the partition wall 112 may be disposed on at least one of the front substrate 101 and the rear substrate 111. .

Here, a predetermined discharge gas may be filled in the discharge cell partitioned by the partition wall 112. For example, discharge gas, such as neon (Ne), argon (Ar), xenon (Xe), is filled.

In addition, a phosphor layer 114 that emits visible light for image display may be disposed in the discharge cell partitioned by the partition wall 112. For example, red (R), green (G), and blue (B) phosphor layers may be disposed.

In addition to the red (R), green (G), and blue (B) phosphors, a white (W) and / or yellow (Y) phosphor layer may be further disposed.

In addition, the thickness of the phosphor layer 114 in at least one of the red (R), green (G), and blue (B) discharge cells may be different from other discharge cells. For example, the thickness of the phosphor layer of the green (G) discharge cell, ie the phosphor layer in the green (G) phosphor layer or the blue (B) discharge cell, ie the blue (B) phosphor layer, is It may be thicker than the thickness of the phosphor layer, ie the red (R) phosphor layer. Here, the thickness of the green (G) phosphor layer may be substantially the same as or different from the thickness of the blue (B) phosphor layer.

In the above description, only one example of the plasma display panel according to an exemplary embodiment of the present invention is illustrated and described. However, the present invention is not limited to the plasma display panel having the above-described structure. For example, the above description shows only the case where the upper dielectric layer number 104 and the lower dielectric layer number 115 are each one layer, but one or more of the upper dielectric layer or the lower dielectric layer is a plurality of layers. It is also possible to make.

In addition, a black matrix (not shown) may be further disposed on the partition 112 to prevent reflection of external light due to the partition 112. In addition, the black matrix may be formed at a specific position on the front substrate 101 corresponding to the partition wall 112.

In addition, although the width or thickness of the third electrode 113 disposed on the rear substrate 111 may be substantially constant, the width or thickness inside the discharge cell may be different from the width or thickness outside the discharge cell. will be. For example, the width or thickness inside the discharge cell may be wider or thicker than that outside the discharge cell.

Next, FIG. 2 is a diagram for describing an image frame for implementing gray levels of an image in a plasma display panel according to an exemplary embodiment of the present invention.

Referring to FIG. 2, an image frame for implementing gray levels of an image in a plasma display panel according to an exemplary embodiment of the present invention may be divided into a plurality of subfields having different emission counts.

Although not shown, one or more subfields among the plurality of subfields may be grayed out according to a reset period for initializing discharge cells, an address period for selecting discharge cells to be discharged, and the number of discharges. It can be divided into the sustain period to implement.

For example, when an image is to be displayed in 256 gray scales, for example, one image frame is divided into eight subfields SF1 to SF8 as shown in FIG. 2, and each of the eight subfields SF1 to SF8, respectively. Can be subdivided into a reset period, an address period and a sustain period.

The gray scale weight of the corresponding subfield may be set by adjusting the number of the sustain signals supplied in the sustain period. That is, a predetermined gray scale weight can be given to each subfield using the sustain period. For example, the gray scale weight of each subfield is 2 ⁿ by setting the gray scale weight of the first subfield to 2 ⁰ and the gray scale weight of the second subfield to 2 ¹ (where n = 0, 1). , 2, 3, 4, 5, 6, and 7) to increase the gray scale weight of each subfield. As described above, the number of sustain signals supplied in the sustain period of each subfield is adjusted according to the gray scale weight in each subfield, thereby implementing gray levels of various images.

A plasma display panel according to an embodiment of the present invention uses a plurality of image frames to implement an image, for example, to display an image of 1 second. For example, 60 image frames are used to display an image of 1 second. In this case, the length T of one image frame may be 1/60 second, that is, 16.67 ms.

In FIG. 2, only one image frame is composed of eight subfields. However, the number of subfields constituting one image frame may be variously changed. For example, one video frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one video frame may be configured with 10 subfields.

In addition, in FIG. 2, the subfields are arranged in the order of increasing magnitude of gray scale weight in one image frame. Alternatively, the subfields may be arranged in order of decreasing gray scale weight in one image frame. Alternatively, subfields may be arranged regardless of the gray scale weight.

Next, FIG. 3 is a diagram for explaining an example of an operation of a plasma display panel according to an embodiment of the present invention in a subfield included in an image frame.

Referring to FIG. 3, in the set-up period of the reset period for initialization, the voltage rises from the first voltage V1 to the second voltage V2 with the first electrode and then from the second voltage V2 to the third voltage. A ramp-up signal is supplied in which the voltage gradually rises to V3. Here, the first voltage V1 may be a voltage of the ground level GND.

In this setup period, a weak dark discharge, that is, setup discharge, occurs in the discharge cell by the rising ramp signal. By this setup discharge, some wall charges can be accumulated in the discharge cells.

In a set-down period after the setup period, a ramp-down signal in a direction opposite to that of the ramp ramp signal is supplied to the first electrode after the ramp ramp signal.

Here, the falling ramp signal may gradually fall from the peak voltage of the rising ramp signal, that is, the fourth voltage V4 lower than the third voltage V3 to the fifth voltage V5.

As the falling ramp signal is supplied, a weak erase discharge, that is, a setdown discharge, occurs in the discharge cell. By this set-down discharge, wall charges such that address discharge can be stably generated in the discharge cells remain uniformly.

In the address period after the reset period, a scan bias signal that substantially maintains the lowest voltage of the falling ramp signal, that is, a voltage higher than the fifth voltage V5, for example, the sixth voltage V6, is supplied to the first electrode.

In addition, a scan signal falling by a scan voltage (Vy) from the scan bias signal may be supplied to the first electrode.

On the other hand, the width of the scan signal in units of subfields may vary. That is, the width of the scan signal in at least one subfield may be different from the width of the scan signal in another subfield. For example, the width of the scan signal in the subfield located later in time may be smaller than the width of the scan signal in the preceding subfield. In addition, the reduction of the scan signal width according to the arrangement order of the subfields may be made gradually, such as 2.6 Hz (microseconds), 2.3 Hz, 2.1 Hz, 1.9 Hz, or 2.6 Hz, 2.3 Hz, 2.3 Hz, 2.1 Hz. .... 1.9 ㎲, 1.9 ㎲ and so on.

As such, when the scan signal is supplied to the first electrode, a data signal that rises by the magnitude of the data voltage (Vd) may be supplied to the third electrode to correspond to the scan signal.

As the scan signal and the data signal are supplied, an address discharge may be generated in the discharge cell to which the data signal is supplied while the voltage difference between the scan signal and the data signal and the wall voltage caused by the wall charges generated in the reset period are added. have.

Here, the sustain bias signal may be supplied to the second electrode to prevent the address discharge from becoming unstable due to the interference of the second electrode in the address period.

Here, the sustain bias signal may maintain a substantially constant sustain bias voltage Vz smaller than the voltage of the sustain signal supplied in the sustain period and greater than the voltage of the ground level GND.

Thereafter, in the sustain period for displaying an image, a sustain signal may be supplied to at least one of the first electrode and the second electrode. For example, a sustain signal may be alternately supplied to the first electrode and the second electrode.

When such a sustain signal is supplied, the discharge cell selected by the address discharge is sustained discharge between the first electrode and the second electrode when the sustain signal is supplied while the wall voltage in the discharge cell and the sustain voltage Vs of the sustain signal are added. , Display discharge may occur.

In this way, an image may be implemented on the screen of the plasma display panel.

Next, FIGS. 4A to 4B are diagrams for describing the structures of the first electrode and the second electrode in more detail.

4A to 4B, at least one of the first electrode 102 or the second electrode 103 includes a main electrode and an auxiliary electrode.

Preferably, the first electrode 102 to which the scan signal is supplied in the address period among the first electrode 102 and the second electrode 103 includes a main electrode 102-1 and an auxiliary electrode 102-2. do.

Here, the auxiliary electrode 102-2 is disposed at a position closer to the center of the discharge cell than the main electrode 102-1. In other words, the distance g2 between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102 is the distance g1 + between the main electrode 102-1 and the second electrode 103. g2 + W2).

On the other hand, when the main electrode of the number 102-1 and the auxiliary electrode of the number 102-2 are regarded as the first electrode 102, respectively, the number of the first electrodes 102 is larger than the number of the second electrodes 103.

Here, the main electrode 102-1 of the first electrode 102 preferably includes a transparent electrode 102a and a bus electrode 102b.

Here, when the auxiliary electrode 102-2 is a substantially opaque electrode, the luminance of an image to be realized may be reduced by decreasing the aperture ratio. Therefore, it is preferable that the auxiliary electrode 102-2 has a transparent electrode. That is, the auxiliary electrode 102-2 is a transparent electrode.

In addition, the second electrode 103 includes a transparent electrode 103a and a bus electrode 103b.

Herein, the transparent electrodes 102a and 103b or the auxiliary electrode 102-2 may include a transparent material such as indium tin oxide (ITO).

The bus electrodes 102b and 103b may include a metal material having excellent electrical conductivity, such as silver (Ag).

Meanwhile, black layers 410 and 420 may be disposed between the transparent electrodes 102a and 103a and the bus electrodes 102b and 103b.

Here, the black layers 410 and 420 preferably have a darker color than at least one of the first electrode 102 and the second electrode 103. The black layers 410 and 420 may include a material having a substantially dark color, for example, ruthenium (Ru) or carbon (C) material.

The black layers 410 and 420 prevent light incident from the outside from being reflected by the first electrode 102 and the second electrode 103.

As described above, when the first electrode 102 includes the auxiliary electrode 102-2 and the main electrode 102-1, when a discharge occurs between the first electrode 102 and the second electrode 103. The auxiliary electrode 102-2 may perform a function of an igniter to reduce a discharge voltage between the first electrode 102 and the second electrode 103. As described above, the discharge start voltage is lowered, so that the amount of discharge current generated is reduced, and the discharge efficiency is improved.

In addition, the discharge ignited between the auxiliary electrode 102-2 of the first electrode 102 and the second electrode 103 diffuses toward the main electrode 102-1 of the first electrode 102, and then Main discharge occurs between the first electrode 102 and the main electrode 102-1 and the second electrode 103. Accordingly, the discharge generated between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102 while lowering the discharge start voltage between the first electrode 102 and the second electrode 103. Can be diffused more easily behind the discharge cell, so that the luminance of the image can be improved.

Here, when the width W2 of the auxiliary electrode 102-2 is excessively large, the gap g1 between the main electrode 102-1 and the auxiliary electrode 102-2 becomes excessively small, and thus the auxiliary electrode In the manufacturing process of 102-2, the auxiliary electrode 102-2 and the main electrode 102-1 may be electrically connected due to a process error. In addition, when the width W2 of the auxiliary electrode 102-2 is excessively large, an excessively large discharge may occur between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102. Accordingly, the main discharge does not occur between the main electrode 102-1 and the second electrode 103 of the first electrode 102 or the intensity of the main discharge is excessively weakened so that the discharge is discharged to the rear of the discharge cell. It may not diffuse smoothly and brightness may decrease.

On the other hand, when the width W2 of the auxiliary electrode 102-2 is excessively small, the electrical resistance of the auxiliary electrode 102-2 may be excessively high, and thus, the auxiliary electrode (1) of the first electrode 102 may be excessively increased. The discharge may not be ignited between 102-2 and the second electrode 103.

In consideration of this, the width W2 of the auxiliary electrode 102-2 is preferably 1/5 times or more 1/10 times the width W1 of the main electrode 102-1.

On the other hand, when the gap g1 between the auxiliary electrode 102-2 and the main electrode 102-1 is excessively small, the auxiliary electrode 102-2 and the main electrode 102-1 are caused by a process error in the manufacturing process. It may happen that this is electrically connected.

On the other hand, when the gap g1 between the auxiliary electrode 102-2 and the main electrode 102-1 is excessively large, the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102 are excessive. After the discharge is ignited therebetween, the ignited discharge does not reach the main electrode 102-1 of the first electrode 102, and thus the main electrode 102-1 and the second electrode ( The driving efficiency may be degraded by the main discharge not being generated or the strength of the main discharge being excessively weakened between the 103).

In consideration of this, it is preferable that the interval g1 between the auxiliary electrode 102-2 and the main electrode 102-1 is one or more times and two times or less of the width W2 of the auxiliary electrode 102-2.

Meanwhile, in the case of the distance g2 between the first electrode 102 and the second electrode 103, for example, as illustrated in FIG. 4B, the auxiliary electrode 102-2 and the main electrode 102-1 of the first electrode 102 are used. The interval g2 between the gaps is larger than the interval g1 between the auxiliary electrode 102-2 and the main electrode 102-1. On this, in more detail with reference to the accompanying Figures 5a to 5b as follows.

5A through 5B are diagrams for describing in detail the gap between the first electrode and the second electrode and the gap between the auxiliary electrode and the main electrode.

First, in FIG. 5A, the gap g2 between the first electrode 102 and the second electrode 103, for example, the auxiliary electrode 102-2 and the main electrode 102 of the first electrode 102 in the case of FIG. 4B. When the ratio of the interval g2 between -1) and the interval g1 between the auxiliary electrode 102-2 and the main electrode 102-1 is 1, 1.3, 1.8, 2.2, 2.5, 2.8, that is, g2 is In the case of 1 times, 1.3 times, 1.8 times, 2.2 times, 2.5 times, and 2.8 times of g1, the magnitude of the discharge current generated during operation is measured.

Referring to FIG. 5A, when g2 is one times g1, g1 is excessively large, and thus, a discharge ignited between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102 is first generated. It may not be smoothly diffused toward the main electrode 102-1 of the electrode 102. Accordingly, when the driving voltage applied between the first electrode 102 and the second electrode 103 is 260 V, the discharge current is approximately 0.15 mA (microampere), and when the driving voltage is 270 V, the discharge current is approximately 0.175. When the drive voltage is 280 V, the discharge current is approximately 0.2 mA, and the discharge current has a relatively large value.

On the other hand, when g2 is 2.8 times g1, g2 is excessively large, which makes it difficult to ignite a discharge between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102. Accordingly, when the drive voltage is 260 V, the discharge current is approximately 0.14 mA, when the drive voltage is 270 V, the discharge current is approximately 0.155 mA, and when the drive voltage is 280 V, the discharge current is approximately 0.175 mA, the discharge current. Has a relatively large value.

On the other hand, when g2 is 1.3 times g1, the discharge current has a relatively stable value between about 0.125 mA and 0.15 mA when the driving voltage is between 260 V and 280 V.

In addition, when g2 is 1.8 times g1, the discharge current has a relatively stable value between about 0.085 mA and 0.095 mA when the driving voltage is between 260 V and 280 V.

In addition, when g2 is 2.2 times g1, when the driving voltage is between 260V and 280V, the discharge current has a relatively stable value of about 0.08 mA to 0.115 mA, and when g2 is 2.5 times g1, the driving voltage is 260V. At 280V, the discharge current has a relatively stable value between approximately 0.105 mA and 0.135 mA.

Next, in FIG. 5B, the ratios of g2 and g1 are 1, 1.3, 1.8, 2.2, 2.5, and 2.8, that is, when g2 is 1, 1.3, 1.8, 2.2, 2.5, and 2.8 times of g1, respectively. Measure the discharge efficiency.

Referring to FIG. 5B, when g2 is one times g1, g1 is excessively large, and accordingly, a discharge ignited between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102 is the first. The electrode 102 does not diffuse smoothly toward the main electrode 102-1, and the discharge current has a relatively large value as in the case of FIG. 5A. Accordingly, when the driving voltage applied between the first electrode 102 and the second electrode 103 is 260 V, the discharge efficiency is approximately 1.45 [lm / W], and when the driving voltage is 270 V to 280 V, the discharge efficiency is low. Approximately 1.40 [lm / W] discharge efficiency is excessively low.

In addition, when g2 is 2.8 times g1, g2 is excessively large, which makes it difficult to ignite a discharge between the auxiliary electrode 102-2 and the second electrode 103 of the first electrode 102. As in the case of FIG. 5A, the discharge current has a relatively large value. Accordingly, the discharge efficiency is approximately 1.55 [lm / W] when the drive voltage is 260 V, the discharge efficiency is about 1.60 [lm / W] when the drive voltage is 270 V, and the discharge efficiency when the drive voltage is 280 V. This approximately 1.70 [lm / W] has an excessively small value of discharge efficiency.

On the other hand, when g2 is 1.3 times g1, the discharge efficiency is approximately 2.0 [lm / W] when the driving voltage is 260V, and the discharge efficiency is about 1.96 [lm / W when the driving voltage is 270V and 280V. Has a value of].

In addition, when g2 is 1.8 times g1, the discharge efficiency is about 2.3 [lm / W] when the driving voltage is 260 V. When the driving voltage is 270 V, the discharge efficiency is about 2.25 [lm / W] and the driving voltage is In the case of this 280V, the discharge efficiency has a value of approximately 2.20 [lm / W].

In addition, when g2 is 2.2 times g1, the discharge efficiency is approximately 2.2 [lm / W] when the driving voltage is 260V, and the discharge efficiency is about 2.15 [lm / W] when the driving voltage is 270V and 280V. When g2 is 2.5 times g1, the discharge efficiency is about 1.9 [lm / W] when the driving voltage is 260 V and when it is 270 V, and the discharge efficiency is about 2.05 [lm when the driving voltage is 280 V. / W].

5A through 5B, the auxiliary electrode 102-2 of the first electrode 102 in the case of the distance g2 between the first electrode 102 and the second electrode 103, for example, as illustrated in FIG. 4B. The interval g2 between the main electrode 102-1 and the main electrode 102-1 is preferably 1.3 or more and 2.5 times or less than the interval g1 between the auxiliary electrode 102-2 and the main electrode 102-1.

Next, FIG. 6 is a figure for demonstrating an example of the other structure of a 1st electrode and a 2nd electrode. In FIG. 6, the description of the above-described details will be omitted.

Referring to FIG. 6, the first electrode 602 and the second electrode 603 include a main electrode 602-1 and 603-1 and an auxiliary electrode 602-2 and 603-2, respectively.

In addition, the main electrode 602-1 of the first electrode 602 and the main electrode 603-1 of the second electrode 603 include transparent electrodes 602a and 603a and bus electrodes 602b and 603b, respectively. do.

In addition, the auxiliary electrode 602-2 of the first electrode 602 and the auxiliary electrode 603-2 of the second electrode 603 each include a transparent electrode. That is, the auxiliary electrode 602-2 of the first electrode 602 and the auxiliary electrode 603-2 of the second electrode 603 are transparent electrodes.

Here, an interval g4 between the first electrode 602 and the second electrode 603, that is, an interval between the auxiliary electrodes 602-2 and 603-2 of the first electrode 602 and the second electrode 603 ( g4 is larger than the intervals g3 and g5 between the main electrodes 602-1 and 603-1 and the auxiliary electrodes 602-2 and 603-2 of the first and second electrodes 602 and 603. .

Preferably, the interval g4 between the first electrode 602 and the second electrode 603, that is, between the auxiliary electrodes 602-2 and 603-2 of the first electrode 602 and the second electrode 603. The interval g4 is a distance between the main electrodes 602-1 and 603-1 of the first and second electrodes 602 and 603 and the auxiliary electrodes 602-2 and 603-2. 1.3 times or more and 2.5 times or less.

Next, FIG. 7 is a figure for demonstrating another example of the structure of a 1st electrode and a 2nd electrode. In FIG. 7, the description of the above-described details will be omitted.

Referring to FIG. 7, the number of auxiliary electrodes 702-2 is plural.

For example, the first electrode 702 to which the scan signal is applied in the address period among the first electrode 702 or the second electrode 703 includes the main electrode 702-1 and the auxiliary electrode 702-2. Assume that the main electrode 702-1 of the first electrode 702 may include a first auxiliary electrode 700c and a second auxiliary electrode 702d.

Here, the distance g6 between the main electrode 702-1 and the first auxiliary electrode 702c and the distance g7 between the first auxiliary electrode 702c and the second auxiliary electrode 702d may be substantially the same as or different from each other. Can be.

In addition, a gap g8 between the first electrode 702 and the second electrode 703, for example, between the outermost auxiliary electrode of the first electrode 702, that is, between the second auxiliary electrode 702d and the second electrode 703. The interval g8 is greater than the interval g6 between the main electrode 702-1 and the first auxiliary electrode 702c and the interval g7 between the first auxiliary electrode 702c and the second auxiliary electrode 702d is larger than the interval g8. .

Preferably, the distance g8 between the first electrode 702 and the second electrode 703, for example, the outermost auxiliary electrode of the first electrode 702, that is, the second auxiliary electrode 702d and the second electrode 703. ), The interval g8 is at least one of the interval g6 between the main electrode 702-1 and the first auxiliary electrode 702c or the interval g7 between the first auxiliary electrode 702c and the second auxiliary electrode 702d. It is 1.3 times or more and 2.5 times or less of one.

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 exemplary embodiments described above 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 foregoing detailed description, and the meaning and scope of the claims are as follows. 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 in detail, in the plasma display panel according to an embodiment of the present invention, at least one of the first electrode and the second electrode includes a main electrode and an auxiliary electrode, thereby improving discharge efficiency and There is an effect that the brightness is improved.

Claims (7)

A front substrate on which the first electrode and the second electrode parallel to each other are disposed; A rear substrate disposed to face the front substrate; And Barrier ribs defining a discharge cell between the front substrate and the rear substrate; Including, A scan signal is supplied to the first electrode of the first electrode or the second electrode in an address period of a subfield; The first electrode includes a main electrode and an auxiliary electrode spaced apart from each other and parallel to each other, And the same driving signal is supplied to the auxiliary electrode and the main electrode. The method of claim 1, The main electrode has a transparent electrode and a bus electrode, The auxiliary electrode includes a transparent electrode. The method of claim 1, And a width of the auxiliary electrode is 1/5 times or more 1/10 times the width of the main electrode. The method of claim 1, And a distance between the auxiliary electrode and the main electrode is one or more times and two times or less of the width of the auxiliary electrode. The method of claim 1, And a distance between the auxiliary electrode and the second electrode is greater than a distance between the auxiliary electrode and the main electrode. The method of claim 5, wherein And a spacing between the auxiliary electrode and the second electrode is 1.3 to 2.5 times the spacing between the auxiliary electrode and the main electrode. A front substrate on which the first electrode and the second electrode parallel to each other are disposed; A rear substrate disposed to face the front substrate; And Barrier ribs defining a discharge cell between the front substrate and the rear substrate; Including, A scan signal is supplied to the first electrode of the first electrode or the second electrode in an address period, The first electrode includes a main electrode and an auxiliary electrode spaced apart from each other and parallel to each other, And the number of the auxiliary electrodes is greater than the number of the main electrodes.

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