KR20070042252A - Plasma display panel - Google Patents

Abstract

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 that improves a discharge characteristic by improving a structure of a data electrode formed on the panel and improves jitter characteristics.

The plasma display panel according to the present invention includes a plurality of scan electrodes and sustain electrodes, a data electrode formed to cross the scan electrode and the sustain electrode, and a point at which the scan electrode and the sustain electrode cross the data electrode. And a discharge cell formed, wherein the thickness of the data electrode is differential at a position corresponding to the discharge cell.

Description

Plasma Display Panel

1 is a view for explaining an arrangement of electrodes formed on a conventional plasma display panel.

Fig. 2 is a diagram showing the characteristics of address discharge in the electrode structure of a conventional plasma display panel.

3 is a diagram showing the structure of a plasma display panel of the present invention;

4 is a diagram illustrating a method of implementing image gradation of a plasma display panel of the present invention.

5 is a view showing a driving waveform in accordance with the driving method of the plasma display panel of the present invention.

Fig. 6 is a diagram showing a first embodiment of the electrode structure of the plasma display panel of the present invention.

Fig. 7 shows a second embodiment of the electrode structure of the plasma display panel of the present invention.

Fig. 8 shows a third embodiment of the electrode structure of the plasma display panel of the present invention.

Fig. 9 shows the characteristics of address discharge in the electrode structure of the plasma display panel of the present invention.

Fig. 10 shows a fourth embodiment of the electrode structure of the plasma display panel of the present invention.

Fig. 11 shows a fifth embodiment of the electrode structure of the plasma display panel of the present invention.

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

300: front panel 310: rear panel

301: front substrate 311: rear substrate

304: upper dielectric layer 315: lower dielectric layer

302a: Scan transparent electrode 302b: Scan bus electrode

303a: sustain transparent electrode 303b: sustain bus electrode

313 data electrode 312 partition wall

314: phosphor 305: protective layer

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

In general, in the plasma display panel, a partition wall formed between the front panel and the rear panel partitions one discharge cell, and a plurality of such discharge cells are gathered to form one pixel. For example, a red (R) cell, a green (G) cell, and a blue (B) cell gather to represent one pixel, that is, a pixel.

Further, each discharge cell is filled with an inert gas containing a main discharge gas such as neon (Ne), helium (He) or a mixture thereof (Ne + He) gas and a small amount of xenon (Xe). When discharged by a high frequency voltage, the inert gas emits vacuum ultraviolet rays (Vacuum Ultra Violet-rays) to emit an phosphor formed in the discharge cell, thereby realizing 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 arrangement of electrodes formed on a conventional plasma display panel.

As shown in FIG. 1, in the conventional plasma display panel 100, a plurality of electrodes, for example, scan electrodes Y1 to Yn and sustain electrodes Z1 to Zn are formed in parallel with each other, and such a scan electrode Y1. Address electrodes X1 to Xm are formed to intersect with ~ Yn and the sustain electrodes Z1 to Zn.

At the point where the scan electrodes Y1 to Yn, the sustain electrodes Z1 to Zn, and the address electrodes X1 to Xm cross each other, that is, in the region A, a discharge cell in which unit discharge occurs is formed. Accordingly, the discharge cells are formed in a matrix form on the plasma display panel. The driving unit for supplying a predetermined driving voltage to the plurality of electrodes is attached to form a plasma display apparatus. In addition, the plasma display panel receives a driving voltage from the driver to generate a discharge to display an image.

The scan electrodes Y, the sustain electrodes Z, and the address electrodes X arranged in such discharge cells are formed to have a constant thickness and a constant width.

As described above, the electrode structure formed in the conventional plasma display panel has a problem in that the discharge starts at the time of driving the panel so that the discharge time increases, 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 electrode structure of the conventional plasma display panel.

Referring to FIG. 2, as an example of the discharge of a 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. Do this. Here, FIG. 2 illustrates an optical waveform that appears over time from the time of applying a pulse for causing an address discharge to the scan electrode Y and the data electrode X. FIG. As shown in FIG. 2, the address discharge is delayed by about 1.5 ms after the pulse is applied. This discharge delay phenomenon may have various causes.

For example, there are various causes of difference in wall charges or misdischarges generated between electrodes, for example, a problem in which the jitter characteristic is further deteriorated due to a weak burst of discharge between electrodes or an inaccuracy of discharge between electrodes.

Accordingly, an object of the present invention is to provide a plasma display panel which can prevent erroneous discharge.

Another object of the present invention is to provide a plasma display panel with improved jitter characteristics.

In addition, another object of the present invention is to provide a plasma display panel capable of displaying high quality images by improving discharge 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.

A plasma display panel of the present invention for achieving the above object is a data electrode formed to intersect a plurality of scan electrodes and sustain electrodes and the scan electrode and the sustain electrode, and the scan electrode and the sustain electrode cross the data electrode. And a discharge cell formed at a point where the thickness of the data electrode is differential at a position corresponding to the discharge cell.

In addition, the thickness of the data electrode at the position corresponding to the central portion of the discharge cell is characterized in that thicker than the thickness at other points.

In addition, the width of the data electrode in the advancing direction of the scan electrode at a position corresponding to the center portion of the discharge cell is characterized in that it is wider than the width at other points.

In addition, the thickness of the data electrode at the point corresponding to the scan electrode in the discharge cell is characterized in that thicker than other points.

In addition, the width of the data electrode in the advancing direction of the scan electrode at a point corresponding to the scan electrode in the discharge cell is larger than the width at other points.

In addition, the scan electrode may be thicker than the sustain electrode.

In addition, an area of the scan electrode is larger than that of the sustain electrode.

In addition, the scan electrode and the sustain electrode may include a transparent electrode and a bus electrode, and an area where the transparent electrode and the data electrode of the scan electrode overlap may include an overlap of the transparent electrode and the data electrode of the sustain electrode. It is characterized in that it is wider than the area.

In addition, the thickness of the data electrode is characterized in that increases toward the center of the discharge cell.

In addition, the thickness of the data electrode is characterized by increasing stepwise in the direction of the center of the discharge cell.

The data electrode may include a plurality of electrode lines at positions corresponding to one discharge cell.

In addition, the plurality of electrode lines may be connected in common to each other.

The data electrode may include two electrode lines at corresponding positions in one discharge cell, and the two electrode lines may be arranged in left and right directions with respect to the center of the discharge cell, respectively. It is done.

The data electrodes may include two electrode lines at positions corresponding to the scan electrode centers, and the two electrode lines may be arranged in left and right directions based on points corresponding to the scan electrode centers, respectively. It is characterized by.

The thickness of the two electrode lines at the point where the two electrode lines face each other is thicker than the thickness at the other point.

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

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

As shown in FIG. 3, in the plasma display panel of the present invention, a plurality of scan electrodes 302 and Y and sustain electrodes 303 and Z are formed in pairs on the front substrate 301 which is a display surface on which an image is displayed. The rear panel 310 in which the plurality of data electrodes 313 and X are arranged so as to intersect the plurality of storage electrode pairs described above is formed on the front panel 300 and the rear substrate 311 forming the rear surface of the storage electrode pairs. Combined in parallel with a certain distance between them.

The front panel 300 is, for example, the scan electrodes 302 and Y and the sustain electrodes 303 and Z for mutually discharging and maintaining light emission in one discharge cell, that is, a transparent electrode formed of a transparent ITO material. And a pair of scan electrodes 302 and Y and sustain electrodes 303 and Z provided as a bus electrode b made of a metal material. Scan electrodes 302 and Y and sustain electrodes 303 and Z are covered by one or more top dielectric layers 304 that limit the discharge current and insulate the electrode pairs, and discharge on top of top dielectric layer 304. In order to facilitate the condition, a protective layer 305 on which magnesium oxide (MgO) is deposited is formed.

For example, the rear panel 310 is arranged such that a plurality of discharge spaces, that is, barrier ribs 312 of a stripe type (or well type) for forming discharge cells are arranged in parallel. In addition, a plurality of data electrodes 313 and X for performing address discharge to generate vacuum ultraviolet rays are disposed in parallel with the partition 312. On the upper side of the rear panel 310, R, G, and B phosphors 314 which emit visible light for image display during address discharge are coated. A lower dielectric layer 315 is formed between the data electrodes 313 and X and the phosphor 314 to protect the data electrodes 313 and X.

Here, the electrode structure of the plasma display panel according to the present invention is different from the conventional one, characterized in that the thickness is different, a more detailed configuration thereof will be described later with reference to FIG.

3 shows only an example of the structure of the plasma display panel of the present invention, and the present invention is not limited to the structure of FIG. For example, in FIG. 3, only the scan electrodes 302 and Y and the sustain electrodes 303 and Z are formed on the front panel 300, and the data electrodes 313 and X are formed on the rear panel 310. 2, scan electrodes 302 and Y, sustain electrodes 303 and Z, and data electrodes 313 and X may be formed on the front panel 300.

In addition, although the above-described scan electrodes 302 and Y and the sustain electrodes 303 and Z only show the transparent electrode a and the bus electrode b, respectively, the scan electrodes 302 and Y are different from each other. At least one of the sustain electrodes 303 and Z may consist of only the bus electrode b.

The front panel 300 and the rear panel 310 formed as described above are bonded to each other through a sealing process to form a plasma display panel, and the above-described electrodes, for example, the scan electrodes 302 and Y and the sustain electrodes 303 and Z, and the data are formed. A driving unit and the like for driving the electrodes 313 and X are attached to form a plasma display device.

The method of expressing the gray level of an image in the plasma display panel according to the present invention is as follows.

4 is a diagram illustrating a method of implementing image gradation of a plasma display panel of the present invention.

As shown in FIG. 4, in the method of expressing a gray level of a conventional plasma display apparatus, a frame is divided into several subfields each of which has a predetermined number of emission times, and each subfield initializes all the cells again. It is divided into a reset period (RPD), an address period (APD) for selecting a cell to be discharged, and a sustain period (SPD) for implementing gray scale according to the number of discharges. For example, when displaying an image with 256 gray levels, a frame period (16.67 ms) corresponding to 1/60 second is divided into eight subfields SF1 to SF8 as shown in FIG. 3, and eight subfields. Each of the SFs SF1 to SF8 is divided into a reset period, an address period, and a sustain period.

The reset period and the address period of each subfield are the same for each subfield. The address discharge for selecting the cell to be discharged is caused by the voltage difference between the address electrode and the transparent electrode which is the scan electrode. The sustain period is increased at a rate of 2 ⁿ ( ^where n = 0, 1, 2, 3, 4, 5, 6, 7) in each subfield. In this way, since the sustain period is different in each subfield, the gray scale of the image is expressed by adjusting the sustain period of each subfield, that is, the number of sustain discharges.

In FIG. 4, only one frame is composed of eight subfields. However, the number of subfields forming one frame may be variously changed. For example, one frame may be configured with 12 subfields from the first subfield to the twelfth subfield, or one frame may be configured with 10 subfields.

In addition, in FIG. 4, subfields are arranged in increasing order of gray scale weight in one frame. Alternatively, subfields may be arranged in order of decreasing gray scale weight in one frame, or gray scale. Subfields may be arranged regardless of the weight.

The driving waveform according to the driving method of the plasma display panel according to the present invention which implements the gray scale of the image in this manner is as follows.

5 is a view illustrating a driving waveform in accordance with the driving method of the plasma display panel of the present invention.

As shown in FIG. 5, the plasma display apparatus is driven by being divided into a reset period for initializing all cells, an address period for selecting a cell to be discharged, and a sustain period for maintaining discharge of the selected cell. In addition, an erasing period for erasing wall charges in the discharged cell may be added and driven as necessary.

In the reset period, the rising ramp waveform Ramp-up is applied to all the scan electrodes at the same time in the setup period. This rising ramp waveform causes weak dark discharge within the full discharge cells. By this setup discharge, positive wall charges are accumulated on the data electrode and the sustain electrode, and negative wall charges are accumulated on the scan electrode.

During the set-down period, after the rising ramp waveform is supplied, the falling ramp waveform (Ramp-down) starts to fall from the positive voltage lower than the peak voltage of the rising ramp waveform and falls to a specific voltage level below the ground (GND) level voltage. By generating a weak erase discharge in the inside, the wall charges excessively formed in the scan electrode are sufficiently erased. By this set-down discharge, wall charges such that the address discharge can stably occur remain uniformly in the cells.

In the address period, the negative scan pulses are sequentially applied to the scan electrodes, and the positive data pulses are applied to the data electrodes in synchronization with the scan pulses. As the voltage difference between the scan pulse and the data pulse and the wall voltage generated in the reset period are added, address discharge is generated in the discharge cell to which the data pulse is applied. In the cells selected by the address discharge, wall charges are formed such that a discharge can occur when the sustain voltage Vs is applied. The sustain electrode is supplied with the positive voltage Vz so as to reduce the voltage difference with the scan electrode from the set down period to the address period or during the address period so as to prevent erroneous discharge from the scan electrode.

In the sustain period, a sustain pulse Su is applied to the scan electrode and the sustain electrodes alternately. In the cell selected by the address discharge, as the wall voltage and the sustain pulse in the cell are added, a sustain discharge, that is, a display discharge, occurs between the scan electrode and the sustain electrode every time the sustain pulse is applied.

After the sustain discharge is completed, if an erase period for erasing wall charges in the discharged cell is added and driven, an erase ramp waveform (Ramp-ers) having a small pulse width or voltage level is supplied to the sustain electrode in the erase period. It will erase the wall charge remaining in the cells of the screen.

As described above, discharges of various discharges, for example, a reset period for initializing each cell, an address discharge for selecting a cell to be discharged, a sustain period for maintaining the discharge of the selected cell, and an erase period for erasing wall charge in the discharged cell In order to generate various discharges such as the discharge of the electrode, the electrode structure of the plasma display panel of the present invention serving as an important element of the discharge will be described in detail below.

Fig. 6 is a diagram showing a first embodiment of the electrode structure of the plasma display panel of the present invention.

As shown in FIG. 6A, 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 with a transparent electrode a made of a transparent material and a bus electrode b made of a metal material. And the sustain electrodes 303 and Z may be included in pairs.

In addition, the data electrodes 313 and X are formed to intersect the scan electrodes 302 and Y or the sustain electrodes 303 and Z. The 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.

In FIG. 6A, an electrode structure corresponding to one discharge cell is illustrated in detail, and the thicknesses of the data electrodes 113 and X at positions corresponding to the discharge cells are differential. In an embodiment, as illustrated in FIG. 6A, the thickness of the data electrodes 113 and X at a position corresponding to the center portion of the discharge cell may be greater than that at other points.

The reason why the thicknesses of the data electrodes 313 and X are formed in this manner is to make the discharge between the electrodes easier to occur. That is, as described above, the electric field is concentrated on the thicker portions of the data electrodes 313 and X so that the data electrodes 313 and X and the scan electrodes 302 and Y or the data electrodes 313 and X and the sustain electrode 303 are concentrated. The counter discharge, which is a discharge between and Z, can be more easily generated. By being able to select the position where the discharge is concentrated in this way, it is possible to prevent the delay of the discharge by causing the desired discharge more easily and accurately.

More preferably, not only the thicknesses of the data electrodes 113 and X but also the widths of the data electrodes 113 and X may be adjusted as shown in FIG. 6B. That is, the width of the data electrodes 113 and X at the position corresponding to the center of the discharge cell in the advancing direction of the scan electrodes 302 and Y or the sustain electrodes 303 and Z is made larger than at other points. In this way, the width of the data electrodes 113 and X is widened to increase the area where the data electrodes 113 and X overlap with the scan electrodes 102 and Y or the sustain electrodes 103 and Z.

The reason why the width of the data electrodes 113 and X are made larger in a predetermined region is, for example, to enlarge the discharge effective space in which wall charges can occur, and thus to the scan electrodes 102 and Y or the sustain electrodes 103 and Z. This is to make it possible to more easily and accurately discharge the discharge, that is, the opposite discharge.

For example, the electrode structure of the plasma display panel of the present invention for more easily bursting the address discharge, which is the counter discharge occurring in the address period, will be described in detail with reference to FIG. 7.

7 is a diagram showing a second embodiment of the electrode structure of the plasma display panel of the present invention.

As shown in FIG. 7A, 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 with a transparent electrode a made of a transparent material and a bus electrode b made of a metal material. And the sustain electrodes 303 and Z may be included in pairs.

In addition, the data electrodes 313 and X are formed to intersect the scan electrodes 302 and Y or the sustain electrodes 303 and Z. The 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.

In FIG. 7A, an electrode structure corresponding to one discharge cell is illustrated in detail, and the thicknesses of the data electrodes 113 and X at positions corresponding to the discharge cells are differential. In the second embodiment, as illustrated in FIG. 7A, the thickness of the data electrodes 113 and X at the point corresponding to the scan electrodes 302 and Y in the discharge cell may be greater than the thickness at the other point. .

In this way, the address discharges performed by the scan electrodes 302 and Y and the data electrodes 313 and X are concentrated by thickening the thickness of the data electrodes 313 and X at positions corresponding to the scan electrodes 302 and Y. Can be more easily caused. In this way, by selecting a location where the discharge is concentrated, the address discharge is more easily and accurately generated, thereby improving the jitter characteristic of delayed discharge.

In addition, more preferably, the width of the data electrodes 113 and X at positions corresponding to the scan electrodes 302 and Y as well as the thickness of the data electrodes 113 and X may be adjusted. That is, the width of the data electrodes 113 and X at the position corresponding to the scan electrodes 302 and Y in the advancing direction of the scan electrodes 302 and Y or the sustain electrodes 303 and Z is made larger than at other points. In this case, the area where the data electrodes 113 and X overlap with the scan electrodes 102 and Y is widened.

In this way, the width of the electrode can be widened to increase the effective space in which wall charges for address discharge can be generated. In addition, by releasing the address discharge more easily, the discharge start voltage can be lowered and the jitter characteristic in which the discharge is delayed can be improved.

In addition, in the address discharge performed by the scan electrodes 302 and Y and the data electrodes 113 and X which are examples of the discharge of the plasma display panel of the present invention described above, not only the data electrodes 113 and X described above with reference to FIG. The structure of the electrodes 302 and Y is also adjustable.

8 is a diagram showing a third embodiment of the electrode structure of the plasma display panel of the present invention.

As shown in FIG. 8A, scan electrodes 302 and Y and sustain electrodes 303 and Z are formed on the plasma display panel of the present invention. In addition, the data electrodes 313 and X are formed to intersect the scan electrodes 302 and Y or the sustain electrodes 303 and Z. The discharge cells are formed at positions corresponding to the intersections of the scan electrodes 302 and Y or the sustain electrodes 303 and Z with the data electrodes 313 and X.

In FIG. 8A, an electrode structure corresponding to one of the discharge cells is illustrated in detail. The thickness of the scan electrodes 302 and Y corresponding to the discharge cells may be greater than that of the sustain electrodes 303 and Z. Referring to FIG. As a result, by focusing the electric field on the above-described scan electrodes 302 and Y, the address discharge generated by the scan electrodes 302 and Y and the data electrodes 313 and X can be more accurately burst, and thus the jitter characteristic can be improved more effectively. .

More preferably, not only the thicknesses of the scan electrodes 302 and Y but also the widths of the scan electrodes 302 and Y may be adjusted as shown in FIG. 8B. That is, the scan electrodes 302 and Y may be formed to have a larger area than the sustain electrodes 303 and Z, thereby increasing the effective discharge space with the data electrodes 313 and X during address discharge.

Here, for example, the scan electrodes 102 and Y and the sustain electrodes 103 and Z may include a transparent electrode a made of a transparent ITO material and a bus electrode b made of a metal material. Although the area of the bus electrodes b of the scan electrodes 102 and Y may be wider when the above-described areas of the scan electrodes 102 and Y are made wider than the sustain electrodes 103 and Z, the aperture ratio is more improved. For this purpose, the area of the transparent electrode a of the scan electrodes 102 and Y is widened.

As such, the area where the transparent electrodes a of the scan electrodes 102 and Y overlap with the data electrodes 313 and X is overlapped with the transparent electrodes a and the data electrodes of the sustain electrodes 103 and Z. As described above, the address discharge characteristics can be improved by making 313, X larger than the overlapping area.

Furthermore, by stabilizing the address discharge, there is an effect that the sustain discharge generated by the scan electrodes 102 and Y and the sustain electrodes 103 and Z, which are display discharges, 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.

Looking at the discharge characteristics appearing in the electrode structure of the plasma display panel of the present invention as shown in FIG.

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

As shown in FIG. 9, 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 the electrode structure of the plasma display panel of the present invention, when the address discharge, which is the opposite discharge between the data electrodes 113 and X and the scan electrodes 102 and Y, occurs, the data electrodes 113 and X and the scan electrodes 102 and Y are generated. ), There is a certain time difference from the time of applying the pulse to generate the address discharge to the time of the address discharge. Here, it can be seen that it is shorter than the delay time of the conventional address discharge of FIG.

This is a result of easily adjusting the thickness and width of the electrodes for address discharge, that is, the data electrodes 113 and X and the scan electrodes 102 and Y. That is, as shown in FIG. 9, the present invention can provide a plasma display panel having improved jitter characteristics by shortening a discharge delay time of a conventional plasma display panel.

Meanwhile, an example of forming a thick data electrode of the plasma display panel according to the present invention may be implemented in various forms. Another example is as follows in FIG. 10.

10 is a view showing a fourth embodiment of the electrode structure of the plasma display panel of the present invention.

As shown in FIG. 10, 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 with a transparent electrode a made of a transparent material and a bus electrode b made of a metal material. And the sustain electrodes 303 and Z are included in pairs.

In addition, the data electrodes 313 and X are formed to intersect the scan electrodes 302 and Y or the sustain electrodes 303 and Z. The 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.

In FIG. 10, an electrode structure corresponding to one discharge cell is illustrated in detail, and the thicknesses of the data electrodes 113 and X at positions corresponding to the discharge cells are differential. In the fourth exemplary embodiment of FIG. 10, the thickness of the data electrodes 113 and X may be increased to increase toward the center of the discharge cell. That is, for example, the thickness of the data electrodes 113 and X may be formed to increase stepwise in the direction of the center of the discharge cell.

The reason for forming in such a variety of forms is to take advantage of the property that the wall charges are collected at the corner portion, for example. The edges of the data electrodes 113 and X may be formed at positions corresponding to the electrodes for discharging the discharges with the data electrodes 113 and X, thereby increasing the distribution of the charges and thereby more easily discharging the discharges.

In addition, although the thicknesses of the data electrodes 113 and X of the embodiment of FIG. 10 are not shown in the drawing, the thicknesses of the data electrodes 113 and X may increase to the center of the scan electrode. In other words, the thickness of the electrode can be increased by selecting a position where the discharge is concentrated, if necessary. This makes it possible to prevent the discharge from being delayed more easily and accurately.

Further, in order to improve the discharge characteristics, a plurality of electrode lines may be formed in a discharge cell in which a thick electrode is formed, which will be described with reference to FIG. 11.

11 is a diagram showing a fifth embodiment of the electrode structure of the plasma display panel of the present invention.

As shown in FIG. 11A, as an example of the discharge cells of the plasma display panel according to the present invention, R (110), G (120), and B (130) sub discharge cells are formed to form a discharge cell forming one pixel. Can be. The electrode structure in the discharge cell has a bus electrode (b) of the scan electrode 302 and the sustain electrode 303 at both points in each of the R (110), G (120), and B (130) sub discharge cells. The transparent electrode a of the predetermined shape of the scan electrode 302 and the sustain electrode 303 is positioned at both points where the bus electrode b is formed so as to face each other with the center of the discharge cell interposed therebetween. .

In addition, the data electrode 313 corresponding thereto is formed to intersect the scan electrode 302 and the sustain electrode 303 including the transparent electrode a and the bus electrode b. Here, the data electrode 313 may include a plurality of electrode lines at corresponding positions in the discharge cell. That is, the plurality of electrode lines may be arranged to correspond to a predetermined position in the discharge cell.

For example, two electrode lines may be formed at left and right sides of the discharge cell center at a corresponding position in one discharge cell. At this time, the two data electrode lines 313 are commonly connected to each other as shown.

In addition, as illustrated in FIG. 11B, a plurality of electrode lines of the data electrode 313 may be formed at a position corresponding to the center portion of the scan electrode 302 at a position in the discharge cell. For example, two electrode lines may be formed at left and right sides with respect to the center portion of the scan electrode 302 at a corresponding position in one discharge cell. At this time, the two data electrode 313 lines are commonly connected to each other as shown.

As described above, by forming the plurality of data electrodes 313 in one discharge cell, a path through which a current for generating a discharge flows into the space of the discharge cell can be extended to increase the current inflow, thereby effectively discharging the discharge.

In addition, by forming the plurality of data electrodes 313, the discharge regions may be dispersed to prevent deterioration of the central portion of the discharge cells, thereby preventing damage to the phosphor.

More preferably, it is the same as the structure shown in Fig. 11C, which is a cross-sectional view of Figs. 11A and 11B. In FIG. 11C, only the side of the substrate 111 on which the data electrode 313 is formed is illustrated. The thickness at the point where the plurality of data electrodes 313 face each other at a position corresponding to one discharge cell is different at different points. It is formed to be thicker than the thickness of the phosphor to protect the phosphor, but the concentration of the electric field can be more easily and accurately discharge the effect.

Such an electrode structure of the plasma display panel of the present invention is not limited to excitation, but can be implemented in various forms. That is, the spring is considerably included in the present invention if the area, thickness, etc. of the electrode structure are improved in order to easily discharge the discharge.

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, the plasma display panel of the present invention lowers the discharge start voltage by causing discharge more easily.

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

In addition, the plasma display panel of the present invention has an effect of improving the accuracy of the discharge to improve the quality of the screen displayed by the panel.

Claims (15)

A plurality of scan electrodes and sustain electrodes; A data electrode formed to intersect the scan electrode and the sustain electrode; A discharge cell formed at a point where the scan electrode and the sustain electrode cross the data electrode, And the thickness of the data electrode is different at a position corresponding to the discharge cell. The method of claim 1, And the thickness of the data electrode at a position corresponding to the center portion of the discharge cell is thicker than the thickness at other points. The method of claim 2, And the width of the data electrode in the advancing direction of the scan electrode at a position corresponding to the center portion of the discharge cell is wider than the width at other points. The method of claim 1, And a thickness of the data electrode at a point corresponding to the scan electrode in the discharge cell is thicker than another point. The method of claim 4, wherein And the width of the data electrode in the advancing direction of the scan electrode at a point corresponding to the scan electrode in the discharge cell is wider than the width at other points. The method of claim 1, And the thickness of the scan electrode is greater than that of the sustain electrode. The method of claim 1, The area of the scan electrode is larger than the area of the sustain electrode. The method of claim 7, wherein The scan electrode and the sustain electrode include a transparent electrode and a bus electrode, and an area where the transparent electrode and the data electrode of the scan electrode overlap is larger than an area where the transparent electrode and the data electrode of the sustain electrode overlap. Plasma display panel, characterized in that wider. The method of claim 1, And the thickness of the data electrode increases toward the center of the discharge cell. The method of claim 9, And the thickness of the data electrode increases stepwise in the direction of the center of the discharge cell. The method of claim 1, And the data electrode includes a plurality of electrode lines at corresponding positions in one discharge cell. The method of claim 11, The plurality of electrode lines are connected to each other in common. The method of claim 11, The data electrode may include two electrode lines at corresponding positions in one discharge cell, and the two electrode lines may be arranged in left and right directions with respect to the center of the discharge cell, respectively. Plasma display panel. The method of claim 11, The data electrode may include two electrode lines at positions corresponding to the center portion of the scan electrode, and the two electrode lines may be arranged in left and right directions based on points corresponding to the center portion of the scan electrode, respectively. Characterized in that the plasma display panel. The method according to claim 13 or 14, And the thickness of the two electrode lines at the point where the two electrode lines face each other is thicker than the thickness at the other point.

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