KR100404079B1 - Structure of hybrid plasma display panel device - Google Patents

Abstract

The present invention relates to a structure of a hybrid plasma display panel device, and the first embodiment can reduce the height of the partition wall by forming the sustain electrode and the ground electrode to which the high frequency signal is applied, respectively, on both partition walls of the discharge cell. It is easy to improve the luminous efficiency by minimizing the loss of visible light and photo electrons. Also, the Y, X-address electrode to which the addressing voltage is applied is formed on the lower plate and the Y, X through the auxiliary electrode. By separating the electrodes to which the high frequency signal is applied and the electrodes to which the addressing voltage is applied by allowing the address electrodes to have the same height spaced apart from each other by a predetermined distance, the driving is easy and there is an effect of minimizing mutual interference. In addition, in the second embodiment, the sustain electrode and the ground electrode to which the high frequency signal is applied are buried in both partitions of the discharge cell, and the electrodes to which the addressing voltage is applied are formed on the upper plate and the lower plate to use counter discharge. Since a large amount of seed charges can be supplied to the pulses as compared with the first embodiment, there is an effect of reducing the high frequency voltage and increasing the luminous efficiency.

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 a partition wall to reduce the height of a cell, and to provide a structure and a manufacturing method. The present invention relates to a structure of a hybrid plasma display panel device that is suitable for simplicity, increase in visible light emission efficiency, and drop in 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 power source for the Y-address electrode 2; A first dielectric film 3 formed on the Y-address electrode 2; Patterned so as to vertically intersect the Y-address 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 Y-address electrode 2, An X-address electrode 4 used as a ground electrode of the high frequency signal in order to maintain the discharge; A second dielectric film (5) formed on an upper surface of the first dielectric film (3) including the patterned X-address 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 Y, X-address electrodes 2 and 4, and the second dielectric film 5 electrically isolates the X-address electrode 4 from the plasma. In addition, the protection 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 while protecting the second dielectric film 5. To lower the voltage.

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 X-address electrode 4 of the lower plate to apply a high frequency signal; And 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 as described above is bonded to the third dielectric film 13 so as to face the lower plate, and the exhaust and Inert mixed gas injection is performed, the injection port is sealed, and the final hybrid plasma display panel device is completed.

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 includes a Y, X-address electrode 2 of a cell to turn on a voltage at which a plasma can be generated instantaneously according to an address RF-sustain separated (ARS) driving scheme. 4, a wall charge is generated on the surface of the dielectric layer of the selected cell, and a triggering high frequency signal is applied to the X-address electrode 4 on the lower plate and the sustain electrode 12 on the upper plate. The discharge of the selected cell is maintained during the sustain period using the wall charge. At this time, as the high frequency signal flows the wall charge during the sustain period, the voltage for maintaining the discharge of the selected cell can be lowered, and the UV light generated by the plasma during the discharge sustain period causes electrons of the phosphor 8 to be discharged. Visible light generated as the excited state falls to the ground state is emitted through the top plate.

In order to turn off the selected cell, it is possible to apply a voltage lower than the voltage generating the plasma to the Y, X-address electrodes 2, 4 to disturb the high frequency plasma. That is, when a voltage lower than the voltage generating the plasma is applied, the plasma is turned off because the space charges in the high frequency plasma move and combine or lose energy by collision with the wall, thereby reducing the momentum.

In the hybrid plasma display panel device as described above, a high frequency signal (RF-Signal) for maintaining a discharge is applied between the sustain electrode 12 of the upper plate and the X-address electrode 4 of the lower plate in consideration of the discharge efficiency. Appropriate levels of frequency and distance between electrodes shall be estimated.

For example, when the frequency is 20 MHz, the distance between the sustain electrode 12 and the X-address electrode 4 is optimal for the discharge condition of the plasma display panel element depending on the pressure, gas configuration, and the like.

Therefore, there is an advantage in that it is possible to test various frequencies and sizes by adjusting the distance between the sustain electrode 12 and the X-address electrode 4, but in most cases, the square bulkhead 7 having a height of 0.5 mm or more. It is difficult to produce by screen printing or the like, and as the height of the cell increases, the uniform coating of the phosphor 8 is difficult and the transmittance of visible light is reduced.

The present invention is one made to solve the conventional problems described above, an object of the present invention as well as to minimize the partition wall height is formed buried in the sustain electrode and the ground electrode to which the high-frequency signal in the partition of the plasma display device It is to provide a structure of a hybrid plasma display panel device that can facilitate manufacturing and increase the luminous efficiency.

In addition, an object of the present invention is to provide a structure of a hybrid plasma display panel device that can be easily driven by separating the electrode to which the AC voltage and the high frequency signal are applied, and also minimize the interference between each other.

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

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

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

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;

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

21: rear panel 22: Y-address electrode

23: first dielectric film 24: X-address electrode

25: second dielectric film 26: protective film

27: partition 28: phosphor

29: holding electrode 30: grounding electrode

31: front panel 32: 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 Y-address electrode patterned on the rear panel to which the addressing voltage is applied; A first dielectric layer stacked on the rear panel including the Y-address electrode; An X-address electrode patterned in units of cells so as to vertically intersect the Y-address electrode on the first dielectric layer, and to which an addressing voltage is applied; A second dielectric film and a protective film sequentially stacked on the first dielectric film including the X-address electrode; A barrier rib formed on the passivation layer and partitioning each discharge cell and coated on sidewalls of the barrier rib; A sustain electrode and a ground electrode embedded in the partition wall and to which a high frequency signal is applied; 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 comprises a Y-address electrode patterned on the rear panel to which the addressing voltage is applied; A first dielectric film and a lower plate protective film sequentially stacked on the rear panel including the Y-address 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 sustain electrode and a ground electrode embedded in the partition wall and to which a high frequency signal is applied; An X-address electrode patterned in units of cells so as to vertically intersect the Y-address electrode on a front panel, to which an addressing voltage is applied; A third dielectric film stacked on an upper portion of the front panel including the X-address electrode; And a top 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. 2 is a cross-sectional view illustrating a structure of a hybrid plasma display panel device according to a first embodiment of the present invention. As shown in FIG. 2, the Y-address electrode 22 is patterned on the rear panel 21 to which an addressing voltage is applied. and; A first dielectric film 23 stacked on the rear panel 21 including the Y-address electrode 22; An X-address electrode 24 patterned in units of cells so as to vertically intersect the Y-address electrode 22 on the first dielectric layer 23 and to which an addressing voltage is applied; A second dielectric film 25 and a protective film 26 sequentially stacked on the first dielectric film 23 including the X-address electrode 24; A barrier rib 27 formed on the protective film 26 and partitioning each discharge cell and a phosphor 28 coated on sidewalls of the barrier rib 27; A sustain electrode 29 and a ground electrode 30 embedded in the partition 27 and to which a high frequency signal is applied; It consists of a front panel 31 bonded to the partition 27. In this case, the phosphor 28 may be further applied to the surface of the front panel 31 that is bonded to the lower plate in consideration of the emission of visible light through the upper plate without disturbing the discharge from the lower plate other than the sidewall of the partition 27 . .

In the hybrid plasma display panel device according to the first embodiment of the present invention as described above, the sustain electrode 29 and the ground electrode 30 to which a high frequency signal is applied are buried in both partition walls 27 of the discharge cell. Therefore, in the case of the VGA-level plasma display panel device, since the size of the discharge cell is generally about 1.2 mm x 0.4 mm, the sustain electrode 29 and the ground electrode 30 are connected to the partition 27 of the long axis (1.2 mm). When formed, the sustain electrode 29 and the ground electrode 30 can be spaced apart by a distance of about 1 mm to have an optimum discharge efficiency when a frequency of about 40 MHz is applied. Since the size of is reduced to half level, it is necessary to increase the frequency more than two times to have the optimum discharge efficiency.

In the first embodiment of the present invention as described above, the frequency is applied 40MHz in the case of the VGA level, the frequency is applied twice in the case of the XGA level, the size of the discharge cell is fixed by the pixel size However, as in the prior art, the height of the high partition wall 7 for optimizing the separation distance between the upper plate sustain electrode 12 and the lower plate X-address electrode 4 to which the high frequency signal is applied is not required. It can be implemented easily.

Therefore, the required height of the partition wall is lowered, making it easier to manufacture and increasing the transmission efficiency of the generated visible light, and also forming the sustain electrode 29 and the ground electrode 30 to which the high frequency signal is applied to the partition wall 27. Accordingly, since the plasma is formed in the horizontal direction instead of the vertical direction, the generated UV light can effectively reach the phosphor 28, thereby minimizing light loss.

In addition, the hybrid plasma display panel device according to the first embodiment of the present invention includes the sustain electrode 29 to which a high frequency signal is applied and the Y, X-address electrodes 22 and 24 to which an AC voltage is applied. By separating the power, it is easier to drive compared to the case of using a conventional high frequency signal and an electrode to which an alternating voltage is applied, and has the advantage of minimizing mutual interference.

On the other hand, in order to prevent the discharge voltage increase due to the step of the Y, X-address electrodes 22, 24 to which the addressing voltage is applied, and to improve the uniformity of the discharge, the X-address electrode 24 is spaced apart from the predetermined distance. It may be considered to insert the auxiliary electrode 32 into the Y-address electrode 22 to have the same height.

3 is an exemplary view showing that the first embodiment of the present invention as described above is applied to a plurality of cells. As shown therein, the sustain electrode 29 and the ground electrode 30 embedded in the partition 27 are shown. Can be commonly used in adjacent cells.

As described above, the hybrid plasma display panel device according to the first embodiment of the present invention applies an addressing voltage to the Y, X-address electrodes 22 and 24 of the lower plate according to the ARS (Address RF-sustain Separated) driving method. For example, the wall charge is selectively generated in the cell to be turned on, and then the seed charge is supplied to the high frequency signal supplied during the sustain period through the triggering pulse.

4 is a cross-sectional view illustrating a structure of a hybrid plasma display panel device according to a second embodiment of the present invention. As shown in FIG. 4, a Y-address electrode (patterned on the rear panel 41) to which an addressing voltage is applied ( 42); A first dielectric film 43 and a lower plate protective film 44 sequentially stacked on the rear panel 41 including the Y-address electrode 42; A partition wall 45 formed on the lower plate protective film 44 and partitioning each discharge cell and a phosphor 46 coated on sidewalls of the partition wall 45; A sustain electrode 47 and a ground electrode 48 embedded in the partition wall 45 to which a high frequency signal is applied; An X-address electrode 50 patterned in units of cells so as to vertically intersect the Y-address electrode 42 on the front panel 49, to which an addressing voltage is applied; A third dielectric film 51 stacked on the front panel 49 including the X-address electrode 50; The upper dielectric layer 51 includes an upper plate protective layer 52 laminated on the third dielectric layer 51 and bonded to the partition wall 45.

In the hybrid plasma display panel device according to the second embodiment of the present invention as described above, the sustain electrode 47 and the ground electrode 48 to which the high frequency signal is applied are both sides of the discharge cell as in the first embodiment of the present invention. While buried in the partition 45, respectively, unlike the first embodiment, the Y, X-address electrodes 42 and 50 to which the addressing voltage is applied are disposed on the upper and lower plates.

Thus, while the first embodiment of the present invention uses surface discharge in which addressing and triggering for selective discharge of a cell proceed in the same plane through the auxiliary electrode 32, the second embodiment of the present invention is provided between the top plate and the bottom plate. Use ongoing counterdischarge.

As described above, the second embodiment of the present invention does not need to form the auxiliary electrode 32 as in the first embodiment, thereby simplifying the process, and further, the X-address electrode 24 and the auxiliary electrode 32. The difficulty of the process due to the alignment margin can be eliminated.

In addition, the use of counter discharge enables supplying a large amount of seed charge to the high frequency pulse as compared with the first embodiment, and as a result, it is possible to increase the luminous efficiency by reducing the high frequency voltage.

The first embodiment of the structure of the hybrid plasma display panel device according to the present invention as described above is to form the sustain electrode and the ground electrode to which the high frequency signal is applied to each of the partition walls on both sides of the discharge cell to lower the partition height It is easy to manufacture, and minimizes the loss of visible light and photo electrons, thereby improving the luminous efficiency. Also, the Y and X-address electrodes to which the addressing voltage is applied are formed on the lower plate and through the auxiliary electrode. The Y and X-address electrodes are separated by a predetermined distance to have the same height so as to separate the electrode to which the high frequency signal is applied and the electrode to which the addressing voltage is applied, thereby facilitating driving and minimizing mutual interference.

In the second embodiment of the hybrid plasma display panel device according to the present invention, a sustain electrode and a ground electrode to which a high frequency signal is applied are buried in both side walls of the discharge cell, and an electrode to which an addressing voltage is applied is formed on the upper and lower plates. By forming a counter-discharge and using a counter discharge, a large amount of seed charge can be supplied to the high frequency pulse as compared with the first embodiment, thereby reducing the high frequency voltage and increasing the luminous efficiency.

Claims (3)

A Y-address electrode patterned on the rear panel and to which an addressing voltage is applied; A first dielectric layer stacked on the rear panel including the Y-address electrode; An X-address electrode patterned in units of cells so as to vertically intersect the Y-address electrode on the first dielectric layer, and to which an addressing voltage is applied; An auxiliary electrode inserted over the Y-address electrode so as to have the same height spaced apart from the X-address electrode by a predetermined distance; A second dielectric film and a protective film sequentially stacked on the first dielectric film including the X-address electrode; A barrier rib formed on the passivation layer and partitioning each discharge cell and coated on sidewalls of the barrier rib; A sustain electrode and a ground electrode embedded in the partition wall and to which a high frequency signal is applied; And a front panel bonded to the partition wall. delete A Y-address electrode patterned on the rear panel and to which an addressing voltage is applied; A first dielectric film and a lower plate protective film sequentially stacked on the rear panel including the Y-address 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 sustain electrode and a ground electrode embedded in the partition wall and to which a high frequency signal is applied; An X-address electrode patterned in units of cells so as to vertically intersect the Y-address electrode on a front panel, to which an addressing voltage is applied; A third dielectric film stacked on an upper portion of the front panel including the X-address electrode; And a top protective film laminated on the third dielectric film and bonded to the partition wall.