KR20020070607A - Structure of hybrid plasma display panel device - Google Patents

Abstract

PURPOSE: A structure of hybrid PDP display panel device is provided to minimize height of a barrier rib and improve lighting efficiency by forming the electrodes receiving an RF signal on the same surface of a lower substrate. CONSTITUTION: A data electrode(22) is patterned on a rear panel(21) and an AC voltage applies to the data electrode. A first dielectric layer(23) is laminated on a top of the rear panel. A sustain electrode(24) is patterned on the first dielectric layer and an RF signal applies to the sustain electrode. A scan electrode(25) is used as a grounding electrode of an AC voltage and the RF signal. A second dielectric(26) and a protection layer(27) are laminated successively on the first dielectric. A barrier rib(28) is formed on the protection layer for sectioning discharge cells and a phosphor(29) is deposited on the side wall of the barrier rib. A sustain electrode is buried in the barrier rib and receives an RF signal. A face panel(30) is attached to the barrier rib.

Description

Structure of Hybrid Plasma Display Panel Device {STRUCTURE OF HYBRID PLASMA DISPLAY PANEL DEVICE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a hybrid plasma display panel device. In particular, in a hybrid plasma display device that uses an alternating voltage and a high frequency signal, an electrode to which a high frequency signal is applied is disposed on the same surface to simplify the structure and manufacturing, and to emit visible light. And a structure of a hybrid plasma display panel element adapted to be suitable for increasing the driving voltage and lowering the driving voltage.

In recent years, as the demand for multimedia displays increases, the development of plasma display panel devices that are promising for home use due to its advantages in large screens and viewing angles and favorable prices, and particularly in the study of increasing brightness and discharge efficiency Is active.

The plasma display panel device has a lower power than an AC drive type plasma display panel device in which a hybrid plasma display panel device that sustains a discharge using a radio frequency (RF: 1 to 100 MHz) uses only an alternating voltage. Because of the high brightness can be achieved, the efficiency can be significantly improved.

That is, in the case of a hybrid plasma display panel device, the electric field changes at a high speed as a high frequency signal is applied, so that heavy ions are not affected by the electric field, and relatively light electrons receive energy from the electric field and oscillate. do. Therefore, by increasing the frequency of the high frequency signal to be applied and increasing the distance between the electrodes of the upper plate and the lower plate to which the high frequency signal is applied, electrons collide between gas molecules inside the plasma rather than the upper plate and the lower plate. Generate a plasma. At this time, since the excitation phenomena for determining the efficiency of the plasma display panel device is increased by five times or more compared with the AC driving plasma display panel device, the efficiency of the hybrid plasma display panel device is remarkably improved. When described in detail with reference to the accompanying drawings, such a hybrid plasma display panel device as follows.

1 is a cross-sectional view showing a conventional hybrid plasma display panel device, and as shown therein, a lower plate of the hybrid plasma display panel device is deposited on the back panel 1 to selectively write and erase on a cell-by-cell basis. A data electrode 2 to which power is applied for; A first dielectric film 3 formed on the data electrode 2; Patterned so as to vertically intersect the data electrode 2 on a cell-by-cell basis on the first dielectric layer 3 to supply power for selective writing and erasing on a cell-by-cell basis with the data electrode 2 to maintain discharge. A scan electrode 4 used as a ground electrode of the high frequency signal; A second dielectric film 5 formed on an upper surface of the first dielectric film 3 including the patterned scan electrode 4; A protective film 6 formed on the second dielectric film 5; Barrier ribs 7 formed on the passivation layer 6 to partition each discharge cell; In the case of writing, it is composed of a phosphor 8 applied to the side wall of the partition wall 7 so that visible light is emitted through the upper plate without disturbing the discharge from the lower plate.

In this case, the first dielectric film 3 is formed to electrically isolate the data electrode 2 and the scan electrode 4, and the second dielectric film 5 electrically isolates the scan electrode 4 from the plasma. In addition, the protective film 6 is formed to generate a wall charge effect, and the protective film 6 is formed of a material having a high secondary electron emission coefficient as well as protecting the second dielectric film 5. Forms to lower.

In addition, there is no difficulty in isolating plasma by using surface discharge (maintaining discharge between electrodes on the same surface) in the general AC drive type plasma display panel device, but in the case of hybrid plasma display panel device, the counter discharge (upper and lower plate) By maintaining the discharge between the electrodes of the () to form a partition 7 in the form of a well of Chinese characters in order to effectively isolate the plasma generated in each cell.

On the other hand, the upper plate of the hybrid plasma display panel element is a sustain electrode 12 on the front panel 11 is patterned in the same direction and position as the scan electrode 4 of the lower plate to apply a high frequency signal; It consists of a third dielectric film 13 formed on the upper front surface of the front panel 11 including the sustain electrode 12, the upper plate formed in this manner is bonded to the third dielectric film 13 to face the lower plate, exhaust and inert Mixed gas injection is performed, and the injection port is sealed to final hybrid plasma display panel device.

In this case, the third dielectric layer 13 is formed to electrically isolate and protect the sustain electrode 12 and the plasma.

As described above, the hybrid plasma display panel device of the hybrid plasma display panel device is configured to turn on the writing voltage at which the plasma can be instantaneously generated, as shown in the ARS (address RF-sustain Separated) driving waveform diagram of FIG. 2. When applied to the data electrode 2 and the scan electrode 4, wall charges are generated on the surface of the dielectric layer of the selected cell, and the high frequency signal (triggering) is triggered on the sustain electrode 12 on the upper plate and the scan electrode 4 on the lower plate. When RF-Signal is applied, the selected cell maintains the discharge during the sustain period using the generated wall charge. At this time, as the high-frequency signal (RF-Signal) flows the wall charge during the sustain period, it is possible to lower the voltage for maintaining the discharge of the selected cell, the application of the high-frequency signal (RF-Signal) to turn off the selected cell Stop.

In the hybrid plasma display panel device as described above, a high frequency signal (RF-Signal) for maintaining the discharge is applied between the sustain electrode 12 of the upper plate and the scan electrode 4 of the lower plate, so that the discharge efficiency is appropriate. The frequency and the distance between the electrodes should be calculated.

For example, when the frequency is 40 MHz, the distance between the sustain electrode 12 and the scan electrode 4 is optimal in the discharge condition of the plasma display panel device depending on the pressure, gas configuration, and the like.

Therefore, in order to optimize the distance between the sustain electrode 12 and the scan electrode 4, the height of the partition wall 7 must be increased. However, in the conventional plasma display panel device, the partition wall 7 is raised to a height of 200 μm or more. ), Which is difficult to form), and the current process is complicated by fabricating the partition wall separately using photo sensitive glass and then joining the top plate, the bottom plate and the partition wall to fabricate the plasma display panel device. There is this.

The present invention was devised to solve the conventional problems as described above, an object of the present invention is to form an electrode to which a high frequency signal is applied on the same surface of the lower plate to minimize the height of the partition wall and facilitate the manufacture The present invention provides a structure of a hybrid plasma display panel device.

Another object of the present invention is to provide a structure of a hybrid plasma display panel device capable of stabilizing a system without separating an electrode to which an AC voltage and a high frequency signal are applied and configuring a separate filter unit externally.

1 is a cross-sectional view showing the structure of a general hybrid plasma display panel device.

Figure 2 is a waveform diagram of the address RF-sustain Separated (ARS) driving scheme of a typical hybrid plasma display panel device.

3 is a cross-sectional view showing the structure of a hybrid plasma display panel device according to a first embodiment of the present invention;

4 is a cross-sectional view showing the structure of a hybrid plasma display panel device according to a second embodiment of the present invention;

5 is an exemplary view showing that the second embodiment of the present invention is applied to a plurality of cells.

*** Explanation of symbols for main parts of drawing ***

31: rear panel 32: data electrode

33: first dielectric film 34: holding electrode

35: ground electrode 36: second dielectric film

37: bottom plate protective film 38: bulkhead

39: phosphor 40: front panel

41: scanning electrode 42: third dielectric film

43: upper protective film 44: auxiliary electrode

First, a first embodiment of the structure of a hybrid plasma display panel device for achieving the object of the present invention as described above is a data electrode patterned on the rear panel is applied an alternating voltage; A first dielectric layer stacked on the rear panel including the data electrode; A scan electrode spaced apart in units of cells so as to vertically intersect the data electrode on the first dielectric layer, and used as a sustain electrode to which a high frequency signal is applied and a ground electrode of an AC voltage and a high frequency signal; A second dielectric film and a protective film sequentially stacked on the first dielectric film including the sustain electrode and the scan electrode; A barrier rib formed on the passivation layer and partitioning each discharge cell and coated on sidewalls of the barrier rib; And a front panel bonded to the partition wall.

In addition, a second embodiment of the structure of the hybrid plasma display panel device for achieving the object of the present invention as described above is a data electrode patterned on the rear panel is applied an alternating voltage; A first dielectric layer stacked on the rear panel including the data electrode; A sustain electrode and a ground electrode patterned on a cell-by-cell basis so as to vertically intersect the data electrode on the first dielectric layer, to which a high frequency signal is applied; A second dielectric film and a lower plate protective film sequentially stacked on the first dielectric film including the sustain electrode and the ground electrode; A barrier rib formed on an upper portion of the lower plate protective layer and partitioning each discharge cell, and a phosphor coated on sidewalls of the barrier rib; A scan electrode patterned at a position between the sustain electrode and the ground electrode and vertically crossing the data electrode on the front panel, and having an alternating voltage applied thereto; A third dielectric film stacked on an upper portion of the front panel including the scan electrode; And an upper plate protective film laminated on the third dielectric film and bonded to the partition wall.

The structure of the hybrid plasma display panel device according to the present invention as described above will be described in detail with reference to the accompanying drawings.

FIG. 3 is a cross-sectional view showing the structure of a hybrid plasma display panel device according to a first embodiment of the present invention, as shown in FIG. 3, patterned on the back panel 21 and having an alternating current voltage applied thereto; A first dielectric layer 23 stacked on the rear panel 21 including the data electrodes 22; A pattern is spaced apart in units of cells so as to vertically intersect the data electrode 22 on the first dielectric layer 23, and is used as a sustain electrode 24 to which a high frequency signal is applied and a ground electrode of an AC voltage and a high frequency signal. An electrode 25; A second dielectric film 26 and a protective film 27 sequentially stacked on the first dielectric film 23 including the sustain electrode 24 and the scan electrode 25; A partition wall 28 formed on the protective film 27 and partitioning each discharge cell and a phosphor 29 coated on sidewalls of the partition wall 28; It consists of a front panel 30 bonded to the partition 28.

In the hybrid plasma display panel device according to the first embodiment of the present invention as described above, the sustain electrode 24 and the scan electrode 25 to which the high frequency signal is applied are disposed on the rear panel 21 and the first dielectric film 23. Spaced patterned on the same side.

Therefore, the separation interval of about 0.8 mm can be realized according to the line widths of the sustain electrode 24 and the scan electrode 25, and thus, between the sustain electrode 12 of the upper plate and the scan electrode 4 of the lower plate as in the prior art. In consideration of the relationship between the frequency and the partition wall 7 according to the application of the high frequency signal, the height of the partition wall 7 is not required to be 200 μm or more. Although somewhat increased, it has the advantage of being easy to manufacture as a whole and is suitable for mass production.

That is, the distance between the sustain electrode 24 and the scan electrode 25 is not the distance between the upper plate and the lower plate, but the separation distance on the same plane of the upper portion of the first dielectric film 23 of the lower plate, and thus, the partition height and frequency as in the prior art. You do not have to consider the relationship

On the other hand, the phosphor 29 does not interfere with the discharge from the lower plate other than the side wall of the partition 28, the front panel 30 is bonded to the upper or lower plate of the protective film 27 of the lower plate in consideration of the visible light is emitted through the upper plate. It can be further applied to the side of.

4 is a cross-sectional view illustrating a structure of a hybrid plasma display panel device according to a second exemplary embodiment of the present invention. As shown in FIG. 4, the data electrode 32 is patterned on the rear panel 31 to which an AC voltage is applied. and; A first dielectric film 33 stacked on the rear panel 31 including the data electrode 32; A sustain electrode 34 and a ground electrode 35 patterned in units of cells so as to vertically intersect the data electrode 32 on the first dielectric layer 33 and to which a high frequency signal is applied; A second dielectric film 36 and a lower protective film 37 sequentially stacked on the first dielectric film 33 including the sustain electrode 34 and the ground electrode 35; A partition wall 38 formed on the lower plate protective film 37 to partition each discharge cell and a phosphor 39 coated on sidewalls of the partition wall 38; A scan electrode 41 patterned at a position between the sustain electrode 34 and the ground electrode 35 at a vertical intersection with the data electrode 32 on the front panel 40 and to which an AC voltage is applied; A third dielectric film 42 stacked on the front panel 40 including the scan electrode 41; The upper dielectric layer 42 includes an upper plate protective layer 43 stacked on the third dielectric layer 42 and bonded to the partition wall 38.

In the hybrid plasma display panel device according to the second embodiment of the present invention as described above, the sustain electrode 34 and the ground electrode 35 to which the high frequency signal is applied are disposed on the rear panel 31 and the first dielectric film 33. The scan electrode 41 and the data electrode 32, which are spaced apart on the same surface and to which an AC voltage is applied, are spaced apart on the upper and lower plates, respectively.

Therefore, the first embodiment of the present invention has a disadvantage in that a low pass filter and a high pass filter must be separately configured as the high frequency signal and the AC voltage are simultaneously supplied to the scan electrode 25. The hybrid plasma display panel device according to the embodiment separates the filter by separating the sustain electrode 34 and the ground electrode 35 to which the high frequency signal is applied, and the scan electrode 41 and the data electrode 32 to which the AC voltage is applied. There is no need to configure, and the leakage component can be reduced to stabilize the whole system.

In addition, the hybrid plasma display panel device according to the first embodiment of the present invention supplies a small amount of electric charge to high frequency pulses by using surface discharge, while the hybrid plasma display panel according to the second embodiment of the present invention is used. The device provides a relatively large amount of charge by using a counter discharge, so that the plasma can be maintained even at a relatively low high frequency voltage.

The hybrid plasma display panel device according to the second embodiment of the present invention as described above can be applied to the waveform diagram according to the ARS driving method shown in FIG. 2, and the upper electrode scan electrode 41 and the lower electrode data electrode ( Addressing is performed between 32), high frequency plasma is started during the discharge sustain period, and a triggering pulse is applied to maintain the same.

That is, as the addressing is performed, the alternating current plasma is generated by the triggering pulse in the case of the cell in which the wall charge is generated, and the alternating plasma is not generated even when the triggering pulse is applied in the cell in which the wall charge is not generated.

On the other hand, the AC addressing voltage as described above is increased or decreased depending on the distance between the top plate and the bottom plate, the height of the partition wall in the case of the general AC drive type plasma display panel device is about 150㎛, the second embodiment of the present invention In order to maintain the high frequency plasma, the partition wall 38 is required to have a height of about 300 to 500 μm, thereby increasing the addressing voltage.

Therefore, as shown in the drawing, by inserting the auxiliary electrode 44 over the data electrode 32, the voltage drop in the first and second dielectric layers 33 and 36 may be minimized to reduce the addressing voltage.

5 is an exemplary view showing that the second embodiment of the present invention is applied to a plurality of cells. As shown in FIG. 5, the sustain electrode 34 and the ground electrode 35 to which a high frequency signal is applied are adjacent to each other. By using it in common, the wiring required for the sustain electrode 34 and the ground electrode 35 as a whole is reduced in half, and the line resistance due to the increase in the line width is reduced, thereby reducing power consumption and facilitating manufacturing. It is possible to improve the adhesion alignment.

According to the first embodiment of the structure of the hybrid plasma display panel device according to the present invention as described above, the height of the partition wall is formed by forming electrodes on the same surface of the lower plate without forming the electrodes to which the high frequency signal is applied, respectively, on the upper plate and the lower plate. There is an effect that can be lowered, and the production can be facilitated.

In addition, the second embodiment can improve the performance of the system as a whole by reducing the leakage components, without having to separately produce a filter by separating the electrode to which the high frequency signal is applied and the electrode to which the AC voltage is applied. Insert the auxiliary electrode on the top of the applied electrode to minimize the addressing voltage, and use the electrode to which the high frequency signal is applied in common in the adjacent cells, reducing the wiring required for the electrode to which the high frequency signal is applied. Due to the increase in line resistance, power consumption can be reduced, manufacturing is facilitated, and adhesion alignment can be improved.

Claims (4)

A data electrode patterned on the rear panel and to which an AC voltage is applied; A first dielectric layer stacked on the rear panel including the data electrode; A scan electrode spaced apart in units of cells so as to vertically intersect the data electrode on the first dielectric layer, and used as a sustain electrode to which a high frequency signal is applied and a ground electrode of an AC voltage and a high frequency signal; A second dielectric film and a protective film sequentially stacked on the first dielectric film including the sustain electrode and the scan electrode; A barrier rib formed on the passivation layer and partitioning each discharge cell and coated on sidewalls of the barrier rib; And a front panel bonded to the partition wall. A data electrode patterned on the rear panel and to which an AC voltage is applied; A first dielectric layer stacked on the rear panel including the data electrode; A sustain electrode and a ground electrode patterned on a cell-by-cell basis so as to vertically intersect the data electrode on the first dielectric layer, to which a high frequency signal is applied; A second dielectric film and a lower plate protective film sequentially stacked on the first dielectric film including the sustain electrode and the ground electrode; A barrier rib formed on an upper portion of the lower plate protective layer and partitioning each discharge cell, and a phosphor coated on sidewalls of the barrier rib; A scan electrode patterned at a position between the sustain electrode and the ground electrode and vertically crossing the data electrode on the front panel, and having an alternating voltage applied thereto; A third dielectric film stacked on an upper portion of the front panel including the scan electrode; And a top protective film laminated on the third dielectric film and bonded to the partition wall. The hybrid plasma display panel device of claim 2, wherein a voltage drop in the first and second dielectric layers is minimized by inserting an auxiliary electrode over the data electrode to which the AC addressing voltage is applied. The structure of a hybrid plasma display panel device according to claim 2, wherein the sustain electrode and the ground electrode to which the high frequency signal is applied are commonly used in adjacent cells.