KR20070054522A - Plasma display panel - Google Patents

Abstract

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of easily generating a discharge.

According to an exemplary embodiment of the present invention, a plasma display panel includes a data electrode formed to intersect a scan electrode, a sustain electrode, the scan electrode and the sustain electrode, and a discharge cell formed at a point where the scan electrode and the sustain electrode cross the data electrode. And partition walls for partitioning, wherein an area of the partition walls corresponding to the data electrodes and the scan electrodes is smaller than an area of the partition walls corresponding to the data electrodes and the sustain electrodes.

Description

Plasma Display Panel

1 is a diagram for explaining an example of the structure of a conventional plasma display panel.

2 is a view showing characteristics of an address discharge in a conventional plasma display panel.

3 shows an example of a plasma display panel of the present invention;

Fig. 4 is a diagram showing the characteristics of address discharge in the plasma display panel of the present invention.

5 is a view for explaining a discharge region between electrodes of a plasma display panel;

6 is a view showing the detailed structure of a partition wall in the plasma display panel of the present invention.

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

302 scan electrode Y 303 sustain electrode Z

312a: vertical bulkhead 312b: horizontal bulkhead

313: data electrode

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel, and more particularly, to a plasma display panel having an improved structure of a partition wall to easily generate a discharge.

In general, a plasma display panel is a partition wall formed between a front panel and a rear panel to form a unit discharge cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He). An inert gas containing a main discharge gas such as and a small amount of xenon is filled. A plurality of unit discharge cells described above are gathered to form one pixel. For example, a red (R) cell, a green (G) cell, and a blue (B) cell may form one pixel. When a high frequency voltage is applied to such a unit discharge cell to discharge, an inert gas generates vacuum ultra violet 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 of its thin and light configuration.

1 is a view for explaining an example of a conventional plasma display panel structure.

As shown in FIG. 1, in the plasma display panel of the present invention, a plurality of scan electrodes 102 and Y and sustain electrodes 103 and Z are formed in pairs on the front substrate 101, which is a display surface on which an image is displayed. A rear panel 110 in which a plurality of data electrodes 113 and X are arranged on the front panel 100 having the storage electrode pairs arranged thereon and the plurality of storage electrode pairs described above on the rear substrate 111 forming the rear surface thereof. They are coupled in parallel with a certain distance between them.

The front panel 100 is, for example, a scan electrode 102 and Y and a sustain electrode 103 and Z for mutual discharge in one discharge cell and maintaining light emission of the cell, that is, a transparent electrode formed of a transparent ITO material. And a pair of scan electrodes 102 and Y and sustain electrodes 103 and Z provided as a bus electrode b made of a metal material. Scan electrodes 102 and Y and sustain electrodes 103 and Z are covered by one or more upper dielectric layers 104 that limit the discharge current and insulate the electrode pairs, and discharge on top of upper dielectric layer 104. In order to facilitate the condition, a protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

For example, the rear panel 110 may be arranged such that a plurality of discharge spaces, that is, partitions 112 of a stripe type (or well type) for forming the discharge cells are parallel to each other. In addition, a plurality of data electrodes 113 and X for performing address discharge to generate vacuum ultraviolet rays are disposed in parallel with the partition wall 112. On the upper side of the rear panel 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the data electrodes 113 and X and the phosphor 114 to protect the data electrodes 113 and X.

The front panel 100 and the rear panel 110 formed as described above are bonded to each other through a sealing process to form a plasma display panel. In addition, a plasma display panel is provided with a driving unit for driving electrodes such as scan electrodes 102 and Y, sustain electrodes 103 and Z, and data electrodes 113 and X. Make up the device. The plasma display panel receives a driving voltage from the above-described driving unit to generate a discharge to display an image.

On the other hand, such a conventional plasma display panel has a problem that the discharge is started late when the panel is driven, thereby increasing the discharge time, that is, the jitter characteristic is deteriorated. That is, the discharge is delayed, which adversely affects the next discharge, thereby causing the false discharge. The jitter characteristics of the plasma display panel are as follows.

2 is a view showing the characteristics of the address discharge in the conventional plasma display panel.

As shown in FIG. 2, as an example of the discharge of the conventional plasma display panel, the scan electrode Y and the data electrode X shown in FIG. 1 are used to select a discharge cell in which an image is to be displayed, that is, a discharge cell in which display discharge will occur. Address discharge is performed in the address period. FIG. 2 shows an optical waveform that appears in accordance with the pulses applied to each discharge cell to cause such an address discharge.

That is, in FIG. 2, for example, the time duration of the optical waveform of 500 address discharges continuously occurring is shown. That is, when driving the conventional plasma display panel, the time from the time when the first pulse for address discharge starts to be applied to the discharge cells is sequentially generated for each discharge cell and the time when the last address discharge occurs is approximately 2.5 ms. It can be seen that this is delayed. The jitter characteristic, which is the discharge delay characteristic, may appear for various reasons.

For example, the deterioration of the jitter characteristic is exacerbated by factors such as a difference in wall charges generated between electrodes or a cause of misdischarge, such as a phenomenon in which the discharge between the electrodes is weakly bursted or an inaccuracy in discharge between the electrodes. There is a problem.

In order to solve such a problem, an object of the present invention is to provide a plasma display panel which easily generates a discharge.

 In addition, another object of the present invention is to provide a plasma display panel that can prevent erroneous discharge.

In addition, another object of the present invention is to provide a plasma display panel for improving the jitter characteristics.

The technical problem of the present invention is not limited to the above-mentioned thing, and another technical problem to be achieved by the present invention will be clearly understood by those skilled in the art by the effect of the configuration of the present invention.

In accordance with another aspect of the present invention, a plasma display panel includes a data electrode formed to intersect a scan electrode, a sustain electrode, the scan electrode, and the sustain electrode, and the scan electrode and the sustain electrode intersect the data electrode. A partition wall for partitioning a discharge cell formed at a point, wherein an area of a partition wall at a point where the data electrode and the scan electrode correspond to each other is smaller than an area of a partition wall at a point where the data electrode and the sustain electrode correspond. It features.

The width of the partition wall in the advancing direction of the data electrode at the point where the data electrode and the scan electrode correspond to the travel direction of the data electrode of the partition at the point where the data electrode and the sustain electrode correspond to each other. It is characterized in that it is smaller than the width.

In addition, a predetermined groove is formed in an outer direction of the discharge cell on a partition surface corresponding to the inside of the discharge cell among the partition walls at the point where the data electrode and the scan electrode correspond.

In addition, the separation distance between the scan electrode and the sustain electrode is characterized in that the 100㎛ 350㎛.

Further, the width of the partition wall in the travel direction of the data electrode in the travel direction of the scan electrode or the sustain electrode is 60 µm or more and 180 µm or less.

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

3 is a view showing an example of the plasma display panel of the present invention.

As shown in FIG. 3, scan electrodes 302 and Y and sustain electrodes 303 and Z are formed on the plasma display panel of the present invention to mutually discharge in one discharge cell and maintain light emission of the cells. That is, the scan electrodes 302 and Y and the sustain electrodes 303 and Z are, for example, scan electrodes 302 and Y provided as a transparent electrode formed of a transparent material and a bus electrode made of a metal material, although not shown in the drawing. The sustain electrodes 303 and Z may be included in pairs. In addition, the plasma display panel of the present invention is not limited thereto and may be implemented by only one of the transparent electrode and the bus electrode.

In addition, the data electrodes 313 and X may be formed to intersect the scan electrodes 302 and Y or the sustain electrodes 303 and Z. Discharge cells are formed at positions corresponding to the intersections of the scan electrodes 302 and Y or the sustain electrodes 303 and Z and the data electrodes 313 and X, and the discharge cells are partitioned by the partition 312.

In FIG. 3, a structure corresponding to one discharge cell is illustrated in detail. In the plasma display panel of the present invention, an area of a partition wall at a point where the data electrode 313 and the scan electrode 302 correspond to the data electrode 313 is different from the conventional method. ) And the sustain electrode 303 are smaller than the area of the partition wall at the corresponding point.

That is, as a more specific example, the width of the partition 312 at the point where the data electrode 313 and the scan electrode 302 correspond, and the width in the advancing direction of the data electrode 313 of the horizontal partition 312b shown in FIG. 3 ( W1 is larger than the width W2 in the traveling direction of the partition 312 at the point where the data electrode 313 and the sustain electrode 303 correspond, and the data electrode 313 of the horizontal partition 312b shown in FIG. 3. You can make it smaller. However, the width W1 of the partition wall may be formed to 60 μm or more in order to maintain the stability of the partition wall.

One embodiment of the plasma display panel according to the present invention includes a predetermined groove (H) in the outer direction of the discharge cell on the partition wall surface corresponding to the inside of the discharge cell among the partition walls at the point where the data electrode 313 and the scan electrode 302 correspond. ) Is also possible to be produced to be formed and can be variously implemented.

Thus, the area of the partition 312 at the point where the data electrode 313 and the scan electrode 302 correspond is smaller than the area of the partition 312 at the point where the data electrode 313 and the sustain electrode 303 correspond. The reason for the formation is to improve the discharge characteristics. For example, by making the scan electrode 302 and the data electrode 313 corresponding areas wider, the effective area between the electrodes is enlarged to expedite the discharge more easily, so that the address discharge performed by the scan electrode 302 and the data electrode 313 is performed. This is to improve the jitter characteristic, which is a discharge delay characteristic at.

That is, as an example, more wall charges are accumulated on the scan electrode 302 in the discharge occurring in the reset period for initializing all the discharge cells, so that the address discharge in the next period may occur more easily. As a result, the jitter characteristic is improved. The improvement of the jitter characteristic in the plasma display panel according to the present invention will be described with reference to FIG. 4.

4 is a diagram showing the characteristics of the address discharge in the plasma display panel of the present invention.

As shown in FIG. 4, an optical waveform according to time of address discharge, which is an example of discharge of the plasma display panel of the present invention, is illustrated. In FIG. 5, as an example, the time duration of the optical waveform of 500 consecutive address discharges is displayed.

That is, when driving the plasma display panel of the present invention, the time from the time when the first pulse for address discharge starts to be applied to the discharge cells is sequentially generated by the address discharge for each discharge cell and the time when the last address discharge occurs is approximately 1.3. It is indicated by. This is about 48% shorter than the conventional address discharge time of 2.5 ms, and it can be seen that the electrode structure of the plasma display panel of the present invention exhibits an excellent effect of improving jitter characteristics.

Furthermore, by enabling the address discharge to occur accurately and stably, there is an effect that the sustain discharge generated by the scan electrodes 302 and Y which are the display discharges and the sustain electrodes 303 and Z can also be generated more accurately.

Accordingly, the plasma display device of the present invention can display a high quality image through more accurate discharge.

On the other hand, in the plasma display panel of the present invention, it is possible to use a positive light emitting region having high luminous efficiency due to the improvement of discharge characteristics.

5 is a diagram for describing a discharge region between electrodes of a plasma display panel.

As shown in FIG. 5, when voltages are respectively applied to a cathode and an anode formed in one discharge cell, electrons are accelerated toward the anode by an electric field to collide with surrounding neutral particles. In this case, the neutral particles undergo ionization processes in which cations and electrons are separated, or excitation processes in which the outermost electrons of the neutral gas rise to high levels of energy. In addition, the ions obtained through this ionization process are accelerated toward the cathode by the electric field and emit new electrons by colliding with the cathode (secondary electron emission).

The discharge space can be divided into negative glow region and positive column region. In the negative glow region, the above-mentioned excitation process is vigorous. As it is consumed, the luminous efficiency is much lower than that of the positive column region. Therefore, in order to use the positive light emitting region of high luminous efficiency, a wide gap structure is used in which the distance between the electrodes is increased.

In the plasma display panel of the present invention, the separation distance between the scan electrode and the sustain electrode (W3 in FIG. 3) may be set to be 100 μm or more and 350 μm or less in order to use such a positive light region. Although the distance between the electrodes is increased, the area corresponding to the data electrode is also reduced, the discharge may be weakened by adjusting the partition wall as described above.

In addition, as described above, the partition wall is reduced in area, so that the capacitance value of the partition wall is reduced in the capacitance value of the plasma display panel that is equivalent to a predetermined capacitance, thereby lowering the driving voltage. That is, the driving voltage is lowered so that the discharge using the above-mentioned positive light column region can be more easily generated, thereby improving the driving efficiency of the plasma display panel more effectively.

In addition, in the plasma display panel of the present invention, the area of the partition wall section may be adjusted more preferably according to the height of the partition wall.

6 is a view showing the detailed structure of the partition wall in the plasma display panel of the present invention.

In FIG. 6, as described above, scan electrodes 302 and Y and sustain electrodes 303 and Z are formed on the plasma display panel of the present invention to mutually discharge one cell and maintain light emission.

In addition, the data electrodes 313 and X may be formed to intersect the scan electrodes 302 and Y or the sustain electrodes 303 and Z. Discharge cells are formed at positions corresponding to the intersections of the scan electrodes 302 and Y or the sustain electrodes 303 and Z and the data electrodes 313 and X, and the discharge cells are partitioned by the partition 312.

In FIG. 6, a structure corresponding to one discharge cell is illustrated in detail. In the plasma display panel of the present invention, the area of the plasma display panel may be gradually increased from the upper surface to the lower surface of the barrier rib 312. That is, the upper area corresponding to the S1 point on the side surface of the partition shown in FIG. 6 may be less than the area of the lower surface corresponding to the S2 point. The reason for narrowing the discharge space by increasing the area of the partition wall toward the inside of the discharge cell is to reduce the amount of current consumed during discharge.

Furthermore, when the wide gap structure is used to improve the discharge efficiency, the space where the discharge occurs over a wide range and the visible light is emitted and the luminance can be displayed is limited, for example, by the bus electrode, so that the discharge space is narrowed and the current is reduced. Minimize the consumption. As a result, power consumption is also reduced.

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, the plasma display panel of the present invention has an effect of generating discharge more easily.

In addition, the plasma display panel of the present invention has the effect of increasing the accuracy of the discharge.

In addition, the plasma display panel of the present invention has the effect of improving the jitter characteristics.

In addition, the plasma display panel of the present invention has the effect of improving the discharge efficiency.

In addition, the plasma display panel of the present invention has the effect of reducing the power consumption.

Claims (5)

Scan electrodes and sustain electrodes; A data electrode formed to intersect the scan electrode and the sustain electrode; A partition wall for partitioning a discharge cell formed at a point where the scan electrode and the sustain electrode cross the data electrode; And an area of the partition wall at the point where the data electrode and the scan electrode correspond to each other is smaller than an area of the partition wall at the point where the data electrode and the sustain electrode correspond. The method of claim 1, The width of the partition wall in the advancing direction at the point where the data electrode and the scan electrode correspond to the width of the partition wall in the advancing direction of the data electrode at the point where the data electrode and the sustain electrode correspond to each other. Plasma display panel, characterized in that smaller than the width. The method of claim 1, And a predetermined groove is formed in an outer side of the discharge cell in a partition surface of the partition wall corresponding to the data electrode and the scan electrode in an outer direction of the discharge cell. The method of claim 1, And a separation distance between the scan electrode and the sustain electrode is 100 µm or more and 350 µm or less. The method of claim 1, And a width of the partition wall in the advancing direction of the data electrode in the advancing direction of the scan electrode or the sustain electrode is 60 µm or more.

Images