KR20030008491A - Plasma display panel - Google Patents

Abstract

PURPOSE: A plasma display panel is provided to reduce power consumption and improve efficiency by enhancing brightness and reducing electrode area by causing a long-gap discharge from a low voltage. CONSTITUTION: A plasma display panel comprises a first sustaining electrode group including two or more electrodes; a second sustaining electrode group including two or more electrodes; and a pad sustaining electrode(68) extended from each electrode of first and second electrode groups toward the adjacent electrode. The pad sustaining electrode includes a first protrusion pattern protruded from each electrode, and a second protrusion pattern formed at a predetermined spacing from the first protrusion pattern.

Description

Plasma Display Panel

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 which can improve efficiency by lowering power consumption by increasing long-gap discharge at low voltage and reducing electrode area.

Recently, a plasma display panel (hereinafter referred to as "PDP"), which is easy to manufacture a large panel, has attracted attention as a flat panel display device. The PDP normally displays an image by adjusting the discharge period of each pixel according to the digital video data. As such a PDP, an AC type PDP having three electrodes and driven by an AC voltage is typical.

1 is a perspective view illustrating a cell structure typically arranged in an alternating current PDP in a matrix form, and FIG. 2 is a cross-sectional view of the PDP shown in FIG. 1.

1 and 2, a PDP cell includes an upper plate having sustain electrode pairs 14 and 16, an upper dielectric layer 18, and a passivation layer 20 sequentially formed on an upper substrate 10, and a lower substrate 12. ), A lower plate having an address electrode 22, a lower dielectric layer 24, a partition wall 26, and a phosphor layer 28 formed sequentially. The upper substrate 10 and the lower substrate 12 are spaced in parallel by the partition wall 26. Each of the sustain electrode pairs 14 and 16 has a relatively wide width and a relatively narrow transparent electrode 14A and 16A made of a transparent electrode material (ITO) having a light transmittance of 90% or more, as shown in FIG. Made of metal electrodes 14B and 16B having a width. Here, the transparent electrode material (ITO) has a large resistance value and thus does not transmit power efficiently. Therefore, the resistive components of the transparent electrodes 14A and 16A are formed on the transparent electrodes 14A and 16A by forming metals 14B and 16B having a good conductivity, for example, silver (Ag) or copper (Cu). To compensate. The sustain electrode pairs 14 and 16 are composed of scan / sustain electrodes and sustain electrodes. The scan signal for panel scanning and the sustain signal for discharging sustain are mainly supplied to the scan / hold electrode 14, and the sustain signal is mainly supplied to the sustain electrode 16. Charges accumulate in the upper dielectric layer 18 and the lower dielectric layer 24. The protective film 20 prevents damage to the upper dielectric layer 18 by sputtering, thereby increasing the lifetime of the PDP and increasing the emission efficiency of secondary electrons. As the protective film 20, magnesium oxide (MgO) is usually used. The address electrode 22 is formed to cross the sustain electrode pairs 14 and 16. The address electrode 22 is supplied with a data signal for selecting cells to be displayed. The partition wall 26 is formed in parallel with the address electrode 22 to prevent ultraviolet rays generated by the discharge from leaking to adjacent cells. The phosphor layer 28 is applied to the surfaces of the lower dielectric layer 24 and the partition wall 26 to generate visible light of any one of red, green, and blue. Then, an inert gas for gas discharge is injected into the discharge space therein.

The PDP cell is selected by the counter discharge between the address electrode 22 and the scan / sustain electrode 14, and then sustains the discharge by the surface discharge between the sustain electrode pairs 14 and 16. In the PDP cell, the fluorescent substance 28 emits light by ultraviolet rays generated during sustain discharge, so that visible light is emitted outside the cell. As a result, the PDP having cells displays an image. In this case, the PDP implements a gray scale required for displaying an image by adjusting the discharge sustain period of the cell, that is, the number of sustain discharges, according to the video data.

The AC surface discharge type PDP is driven by being divided into a plurality of subfields in order to express gray scale of an image, and in each subfield period, gradation display is performed by performing light emission in proportion to the weight of video data. do. For example, when an image is displayed in 256 gray scales using 8-bit video data, one frame display period (for example, 1/60 second = about 16.7 msec) in each discharge cell is divided into eight subfields SF1 to SF1. SF8). Each subfield SF1 to SF8 is further divided into a reset period, an address period and a sustain period, and 1: 2: 4: 8:... The weight is given at the ratio of 128. Here, the reset period is a period for initializing the discharge cells, the address period is a period during which selective address discharge occurs according to the logic value of the video data, and the sustain period is such that discharge is maintained in the discharge cells in which the address discharge has occurred. It is a period. The reset period and the address period are equally assigned to each subfield period.

The discharge efficiency of PDP is so good that the ratio of electrode area to cell area is small. In other words, when the ratio of the electrode area becomes smaller, the reactive power consumed for charging the capacitance between the electrodes becomes smaller. In addition, as the ratio of the electrode area decreases, the discharge current decreases, and as the discharge current decreases, the magnetic absorption of vacuum ultraviolet rays by the discharge gas decreases, thereby increasing the efficiency of exciting the phosphor.

In order to solve this problem, as shown in FIG. 4, a PDP including a T-shaped transparent electrode has been proposed.

Referring to FIG. 4, the proposed PDP is formed on an upper substrate (not shown), and the sustain electrode pairs 30 and 32 are formed in the stripe-shaped metal electrodes 30A and 32A and the respective metal electrodes 30A and 32A. It consists of protruding transparent electrodes 30B and 32B.

The metal electrodes 30A and 32A are located at both edges of the discharge cell and are formed of a highly conductive metal material such as silver (Ag) or copper (Cu).

The transparent electrodes 30B and 32B have a relatively wider width than the metal electrodes 30A and 32A, have a T-shape, and face each other.

The sustain electrode pairs 30 and 32 are composed of scan / sustain electrodes and sustain electrodes. The scan signal for panel scanning and the sustain signal for discharging sustain are mainly supplied to the scan / hold electrode 30, and the sustain signal is mainly supplied to the sustain electrode 32.

When the ratio of the area of the sustain electrode pairs 30 and 32 occupied by the transparent electrodes 30B and 32B to the area of the discharge cells is reduced, power consumption is reduced to improve luminous efficiency. However, there is a limit to improving the discharge efficiency because the discharge voltage is increased as the electrode area is reduced.

Accordingly, an object of the present invention is to provide a plasma display panel capable of lowering power consumption by increasing long-gap discharge at low voltage and increasing electrode brightness and reducing electrode area.

1 is a perspective view showing a discharge cell of a conventional three-electrode AC surface discharge PDP.

FIG. 2 is a sectional view of the PDP shown in FIG. 1. FIG.

3 is a driving waveform diagram of the discharge cell shown in FIG.

4 is a plan view showing a discharge cell of another conventional PDP.

5 is a perspective view showing a discharge cell of the PDP according to the first embodiment of the present invention;

FIG. 6 is a plan view of the PDP shown in FIG. 5; FIG.

7 is a plan view illustrating a discharge cell of a PDP according to a second embodiment of the present invention.

8 is a plan view illustrating a discharge cell of a PDP according to a third embodiment of the present invention.

9 is a plan view illustrating a discharge cell of a PDP according to a fourth embodiment of the present invention.

10 is a plan view showing a discharge cell of the PDP according to the fifth embodiment of the present invention;

11 is a plan view illustrating a discharge cell of a PDP according to a sixth embodiment of the present invention.

12 is a plan view illustrating a discharge cell of a PDP according to a seventh embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10,60: upper substrate 12,62: lower substrate

14,30: scan / sustain electrode 16,32: sustain electrode

18,70: upper dielectric layer 20,72: protective film

22, 80: address electrode 24, 74: lower dielectric layer

26, 76: partition 28, 78: phosphor layer

64,66,80,84,90,94,100,104,110,114,120,124,130,134: sustain electrode group

63,68,81,85,91,95,101,105,111,115,121,125,131,135: pad holding electrode

In order to achieve the above object, the plasma display panel according to the present invention includes a first sustain electrode group including at least two or more electrodes, a second sustain electrode group including at least two or more electrodes, and the first and second sustain electrodes. And a pad holding electrode extending toward the adjacent electrode in each of the electrodes of the electrode group.

The pad holding electrode may include a first protrusion pattern protruding from each of the electrodes, and a second protrusion pattern formed with the first protrusion pattern and a predetermined space therebetween.

The pad holding electrode may include a protruding pattern to which electrodes formed in each of the first and second sustaining electrode groups are connected.

Other objects and advantages of the present invention in addition to the above object will be apparent from the description of the preferred embodiment of the present invention with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 5 to 12.

5 is a perspective view illustrating a PDP according to a first embodiment of the present invention, and FIG. 6 is a plan view illustrating the PDP illustrated in FIG. 5.

5 and 6, the PDP according to the present invention includes an upper substrate 60 on which the first storage electrode group 64 and the second storage electrode group 66 are formed, and a lower substrate on which the address electrode 80 is formed. 62 is provided.

The upper dielectric layer 70 and the passivation layer 72 are stacked on the upper substrate 60 on which the first storage electrode group 64 and the second storage electrode group 66 are formed. Charges are accumulated in the upper dielectric layer 70 and the lower dielectric layer 74. The passivation layer 72 prevents damage to the upper dielectric layer 70 by sputtering, thereby increasing the lifetime of the PDP and increasing the emission efficiency of secondary electrons. As the protective film 72, magnesium oxide (MgO) is usually used.

The partition wall 76 is formed in parallel with the address electrode 80 to prevent ultraviolet rays generated by the discharge from leaking to the adjacent cells. The phosphor layer 78 is applied to the surfaces of the lower dielectric layer 74 and the partition wall 76 to emit visible light of any one of red, green, and blue. Then, an inert gas for gas discharge is injected into the discharge space therein.

The first storage electrode group 64 is a first storage electrode 64Y, a first auxiliary electrode 65Y, and a first formed opposite to the first storage electrode 64Y and the first auxiliary electrode 65Y. A pad holding electrode 63 is provided.

The first sustain electrode 64Y and the first auxiliary electrode 65Y are formed of a metal electrode having good electrical conductivity. The first pad holding electrode 63 extends from the first sustain electrode 64Y to the first T-shaped protruding pattern 63A and the second T-shaped protruding pattern to protrude from the first auxiliary electrode 65Y. It consists of 63B. The first and second pad holding electrodes 65A and 65B are formed to face each other and are formed of a transparent conductive material, for example, indium tin oxide (hereinafter, referred to as “ITO”) or a metal material. do.

The second storage electrode group 66 includes a second storage electrode 66Z, a second auxiliary electrode 67Z, and a second formed opposite to the second storage electrode 66Z and the second auxiliary electrode 67Z. A pad holding electrode 68 is provided.

The second sustain electrode 66Z and the second auxiliary electrode 67Z are formed of a metal electrode having good electrical conductivity. The second pad holding electrode 68 is formed to be symmetrical with the first pad holding electrode 63 and is formed of a transparent conductive material, for example, ITO or a metal material.

When voltage is supplied to the first sustain electrode group 64 and the second sustain electrode group 66, the first and second auxiliary electrodes 65Y and 67Z located closest to each other cause initial discharge. Charged particles are formed by the initial discharge of the auxiliary electrodes 66Y and 66Z, and the discharge is diffused toward the sustain electrodes 64Y and 64Z. At this time, in order for the initial discharge occurring between the auxiliary electrodes 66Y and 66Z to diffuse to the discharge occurring between the sustain electrodes 64Y and 64Z, the voltage applied to the sustain electrodes 64Y and 64Z is applied to the auxiliary electrodes 66Y. , 66Z). However, since the pad holding electrodes 63 and 68 are formed in the sustain electrode groups 64 and 66 according to the present invention, discharge occurs between the sustain electrodes 64Y and 64Z even at a low discharge voltage. In other words, the wall charges formed by the pad holding electrodes 63 and 68 diffuse into the space to assist the initial discharge of the auxiliary electrodes 66Y and 66Z, thereby preventing the long pass discharge of the sustaining electrodes 64Y and 64Z. It happens more easily. In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

The address electrode 80 is formed to intersect the first and second sustain electrode groups 64 and 66. The scan pulse is supplied to the first sustain electrode group 64 during the address discharge, and the data pulse is applied to the address electrode 80 in synchronization with the first sustain electrode group 64. Wall charges are formed on the upper and lower dielectric layers 70 and 74.

In the cells selected by the address discharge, sustain discharge occurs between the first and second sustain electrode groups 64 and 66. At this time, ultraviolet rays are generated in the process of transition after the discharge gas is excited in the discharge space. The generated ultraviolet rays excite the phosphor 78 to generate visible light, thereby implementing a PDP image.

7 is a perspective view illustrating a PDP according to a second embodiment of the present invention.

Referring to FIG. 7, a PDP according to the present invention includes a first storage electrode group 80 and a second storage electrode group 84 on an upper substrate (not shown).

The first storage electrode group 80 includes a first storage electrode 80Y, a first auxiliary electrode 82Y formed in parallel with the first storage electrode 80Y, and the first storage electrode 80Y and the first auxiliary electrode. A first pad holding electrode 81 is connected between the electrodes 82Y.

The first sustain electrode 80Y is formed of a metal electrode having good electrical conductivity, and the first auxiliary electrode 82Y is formed of ITO having high light transmittance. The first pad holding electrode 81 extends from the first sustain electrode 80Y and protrudes from the first T-shaped protruding pattern 81A and the second T-shaped protruding pattern protruding from the first auxiliary electrode 82Y. 81B and a connection pattern 81C for connecting the first and second T-shaped protruding patterns 81A and 81B. The pad holding electrode 81 is formed of a transparent conductive material having good light transmittance, for example, ITO.

The second storage electrode group 84 includes a second storage electrode 86Z, a second auxiliary electrode 84Z formed in parallel with the second storage electrode 86Z, and the second storage electrode 86Y and the second auxiliary electrode. A second pad holding electrode 85 is connected between the electrodes 84Y.

The second sustain electrode 86Z is formed of a metal electrode having good electrical conductivity, and the second auxiliary electrode 84Z is formed of ITO having high light transmittance. The second pad holding electrode 85 is formed to be symmetrical with the first pad holding electrode 81 and is formed of a transparent conductive material having good light transmittance, for example, ITO.

When voltage is supplied to the first storage electrode group 80 and the second storage electrode group 84, the initial discharge occurs at the first and second auxiliary electrodes 82Y and 84Z located closest to each other. Charged particles are formed by the initial discharge of the auxiliary electrodes 82Y and 84Z, and the discharge is diffused toward the sustain electrodes 80Y and 86Z. At this time, in order for the initial discharge occurring between the auxiliary electrodes 82Y and 84Z to diffuse to the discharge occurring between the sustain electrodes 80Y and 86Z, the voltage applied to the sustain electrodes 80Y and 86Z is applied to the auxiliary electrodes 82Y. , 84Z). However, the pad holding electrodes 81 and 85 are formed in the sustain electrode groups 80 and 84 according to the present invention to cause the discharge between the sustain electrodes 80Y and 86Z even at a low discharge voltage. In other words, the wall charges formed along the pad holding electrodes 81 and 85 assist the initial discharge of the auxiliary electrodes 82Y and 84Z, so that the long pass discharge of the sustain electrodes 80Y and 86Z occurs more easily. . In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

8 is a perspective view illustrating a PDP according to a third embodiment of the present invention.

Referring to FIG. 8, the PDP according to the present invention includes a first sustain electrode group 90 and a second sustain electrode group 94 on an upper substrate (not shown).

The first storage electrode group 90 includes a first storage electrode 90Y, a first auxiliary electrode 92Y formed in parallel with the first storage electrode 90Y, and the first storage electrode 90Y and the first auxiliary electrode. A first pad holding electrode 91 is connected between the electrodes 92Y.

The first sustain electrode 90Y is formed of a metal electrode having good electrical conductivity, and the first auxiliary electrode 92Y is formed of ITO having high light transmittance. The first pad holding electrode 91 extends vertically from the first storage electrode 90Y and horizontally protrudes from the center of the vertical pattern 91A and the vertical pattern 91A connected to the first auxiliary electrode 92Y. It consists of the pattern 91B. The first pad holding electrode 91 has a "+" shape and is formed of a transparent conductive material having good light transmittance, for example, ITO.

The second storage electrode group 94 includes a second storage electrode 96Z, a second auxiliary electrode 94Z formed in parallel with the second storage electrode 96Z, and the second storage electrode 96Y and the second auxiliary electrode. A second pad holding electrode 95 is connected between the electrodes 94Y.

The second sustain electrode 96Z is formed of a metal electrode having good electrical conductivity, and the second auxiliary electrode 94Z is formed of ITO having high light transmittance. The second pad holding electrode 95 is formed to be symmetrical with the first pad holding electrode 91 and is formed of a transparent conductive material having good light transmittance, for example, ITO.

When voltage is supplied to the first storage electrode group 90 and the second storage electrode group 94, the first and second auxiliary electrodes 92Y and 94Z located closest to each other cause initial discharge. Charged particles are formed by the initial discharge of the auxiliary electrodes 92Y and 94Z, and the discharge is diffused toward the sustain electrodes 90Y and 96Z. At this time, in order for the initial discharge occurring between the auxiliary electrodes 92Y and 94Z to diffuse to the discharge occurring between the sustain electrodes 90Y and 96Z, a voltage applied to the sustain electrodes 90Y and 96Z is applied to the auxiliary electrodes 92Y. , 94Z). However, the pad holding electrodes 91 and 95 are formed in the sustaining electrode groups 90 and 94 according to the present invention to cause discharge between the sustaining electrodes 90Y and 96Z even at a low discharge voltage. In other words, the wall charges formed along the pad holding electrodes 91 and 95 help the initial discharge of the auxiliary electrodes 92Y and 94Z, so that the long pass discharge of the sustaining electrodes 90Y and 96Z occurs more easily. . In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

9 is a perspective view illustrating a PDP according to a fourth embodiment of the present invention.

9, a PDP according to the present invention includes a first sustain electrode group 100 and a second sustain electrode group 104 on an upper substrate (not shown).

The first storage electrode group 100 includes a first storage electrode 100Y, a first auxiliary electrode 102Y formed in parallel with the first storage electrode 100Y, and the first storage electrode 100Y and the first auxiliary electrode. A first pad holding electrode 101 is connected between the electrodes 102Y.

The first sustain electrode 100Y is formed of a metal electrode having good electrical conductivity, and the first auxiliary electrode 102Y is formed of ITO having high light transmittance. The first pad holding electrode 101 vertically extends from the first sustaining electrode 100Y to connect the first auxiliary electrode 102Y, and two protrusions protruding from the vertical pattern 101A. It consists of patterns 101B and 101C. The first pad holding electrode 101 is formed of ITO having good light transmittance.

The second storage electrode group 104 includes a second storage electrode 106Z, a second auxiliary electrode 104Z formed in parallel with the second storage electrode 106Z, and the second storage electrode 106Y and the second auxiliary electrode. A second pad holding electrode 105 is connected between the electrodes 104Y.

The second sustain electrodes 104Z are formed of a metal electrode having good conductivity, and the second auxiliary electrode 104Z is formed of ITO having high light transmittance. The second pad holding electrode 105 is formed to be symmetrical with the first pad holding electrode 101 and is formed of a transparent conductive material having good light transmittance, for example, ITO.

When voltage is supplied to the first storage electrode group 100 and the second storage electrode group 104, the first and second auxiliary electrodes 102Y and 104Z located closest to each other cause initial discharge. Charged particles are formed by the initial discharge of the auxiliary electrodes 102Y and 104Z, and the discharge is diffused toward the sustain electrodes 100Y and 106Z. In this case, in order for the initial discharge occurring between the auxiliary electrodes 102Y and 104Z to diffuse to the discharge occurring between the sustain electrodes 100Y and 106Z, the voltage applied to the sustain electrodes 100Y and 106Z is applied to the auxiliary electrodes 102Y. , 104Z). However, the pad holding electrodes 101 and 105 are formed in the sustaining electrode groups 100 and 104 according to the present invention to cause a discharge between the sustaining electrodes 100Y and 106Z even at a low discharge voltage. In other words, the wall charges formed along the pad holding electrodes 101 and 105 help the initial discharge of the auxiliary electrodes 102Y and 104Z, so that the long pass discharge of the sustain electrodes 100Y and 106Z occurs more easily. . In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

10 is a perspective view illustrating a PDP according to a fifth embodiment of the present invention.

Referring to FIG. 10, a PDP according to the present invention includes a first sustain electrode group 110 and a second sustain electrode group 114 on an upper substrate (not shown).

The first storage electrode group 110 includes a first storage electrode 110Y, a first auxiliary electrode 112Y formed in parallel with the first storage electrode 110Y, and the first storage electrode 110Y and the first auxiliary electrode. A first pad holding electrode 111 formed on each of the electrodes 112Y is provided.

The first sustain electrode 110Y and the first auxiliary electrode 112Y are formed of a metal electrode having good electrical conductivity. The first pad holding electrode 111 may include the first and second vertical patterns 111A and 111C and the first and second vertical patterns 111A and 111C that protrude vertically from both edges of the first sustain electrode 110Y. The first protrusion pattern 111D includes a horizontal pattern 111B connected horizontally, and a second protrusion pattern 111E formed to be symmetrically perpendicular to the first protrusion pattern 111D. The first pad holding electrode 111 is formed of ITO having a high light transmittance or a metal material having good conductivity.

The second storage electrode group 114 includes a second storage electrode 116Z, a second auxiliary electrode 114Z formed in parallel with the second storage electrode 116Z, and the second storage electrode 116Z and the second auxiliary electrode. A second pad holding electrode 115 formed on each of the electrodes 114Z is provided.

The second sustain electrode 114Z is formed of a metal electrode having good electrical conductivity, and the second auxiliary electrode 114Z is formed of ITO having high light transmittance. The second pad holding electrode 115 is formed to be symmetrical with the first pad holding electrode 111 and is formed of ITO having good light transmittance or a metal material having good conductivity.

When voltage is supplied to the first storage electrode group 110 and the second storage electrode group 114, the first and second auxiliary electrodes 112Y and 114Z located closest to each other cause initial discharge. Charged particles are formed by the initial discharge of the auxiliary electrodes 112Y and 114Z, and the discharge is diffused toward the sustain electrodes 110Y and 116Z. At this time, in order for the initial discharge occurring between the auxiliary electrodes 112Y and 114Z to diffuse to the discharge occurring between the sustain electrodes 110Y and 116Z, the voltage applied to the sustain electrodes 110Y and 116Z is applied to the auxiliary electrodes 112Y. , 114Z). However, the pad holding electrodes 111 and 115 are formed in the sustain electrode groups 110 and 114 according to the present invention to cause the discharge between the sustain electrodes 110Y and 116Z even at a low discharge voltage. In other words, the wall charges formed by the pad holding electrodes 111 and 115 diffuse into the space to assist the initial discharge of the auxiliary electrodes 112Y and 114Z, thereby preventing the long pass discharge of the sustaining electrodes 110Y and 116Z. It happens more easily. In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

11 is a perspective view illustrating a PDP according to a sixth embodiment of the present invention.

Referring to FIG. 11, a PDP according to the present invention includes a first storage electrode group 120 and a second storage electrode group 124 on an upper substrate (not shown).

The first storage electrode group 120 includes a first storage electrode 120Y, a first auxiliary electrode 122Y formed in parallel with the first storage electrode 120Y, and the first storage electrode 120Y and the first auxiliary electrode. The first pad holding electrode 121 is formed to connect the electrode 122Y.

The first sustain electrode 120Y is formed of a metal material having good conductivity, and the first auxiliary electrode 122Y is formed of ITO having good light transmittance.

The first pad holding electrode 121 faces the first vertical pattern 121A extending vertically from the first sustain electrode 120Y and the first vertical pattern 121A from the first auxiliary electrode 122Y. The second vertical pattern 121B extending vertically, the first and second horizontal patterns 121C and 121D extending horizontally from the first and second vertical patterns 121A and 121B, and the first and second horizontal patterns It consists of a connection pattern 121F for connecting the patterns 121C and 121D vertically, that is, a zigzag pattern. The first pad holding electrode 121 is formed of ITO having good light transmittance.

The second storage electrode group 124 includes a second storage electrode 126Z, a second auxiliary electrode 124Z formed in parallel with the second storage electrode 126Z, and the second storage electrode 126Z and the second auxiliary electrode. A second pad holding electrode 125 formed on each of the electrodes 124Z is provided.

The second sustain electrode 124Z is formed of a metal electrode having good electrical conductivity, and the second auxiliary electrode 124Z is formed of ITO having high light transmittance.

The second pad holding electrode 125 is formed to be symmetrical with the first pad holding electrode 121 in a horizontal direction and is formed of ITO having a good light transmittance.

When voltage is supplied to the first storage electrode group 120 and the second storage electrode group 124, initial discharge occurs at the first and second auxiliary electrodes 122Y and 124Z located closest to each other. Charged particles are formed by the initial discharge of the auxiliary electrodes 122Y and 124Z, and the discharge is diffused toward the sustain electrodes 120Y and 126Z. At this time, in order for the initial discharge occurring between the auxiliary electrodes 122Y and 124Z to diffuse to the discharge occurring between the sustain electrodes 120Y and 126Z, the voltage applied to the sustain electrodes 120Y and 126Z is applied to the auxiliary electrodes 122Y. , 124Z). However, the pad holding electrodes 121 and 125 are formed in the sustain electrode groups 120 and 124 according to the present invention to cause the discharge between the sustain electrodes 120Y and 126Z even at a low discharge voltage. In other words, the wall charges formed along the pad holding electrodes 121 and 125 assist the initial discharge of the auxiliary electrodes 122Y and 124Z so that the long pass discharge of the sustaining electrodes 120Y and 126Z occurs more easily. . In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

12 is a perspective view illustrating a PDP according to a seventh embodiment of the present invention.

Referring to FIG. 12, a PDP according to the present invention includes a first storage electrode group 130 and a second storage electrode group 134 on an upper substrate (not shown).

The first storage electrode group 130 includes a first storage electrode 130Y, a first auxiliary electrode 132Y formed in parallel with the first storage electrode 130Y, and the first storage electrode 130Y and the first auxiliary electrode. A first pad holding electrode 131 formed on each of the electrodes 132Y is provided.

The first sustain electrode 130Y and the first auxiliary electrode 132Y are formed of a metal electrode having good conductivity.

The first pad holding electrode 131 may include a first vertical pattern 131A extending vertically from one side of the first sustain electrode 130Y and a first horizontal pattern 131B extending horizontally from the first vertical pattern 131A. ), A second vertical pattern 131D extending vertically from the first auxiliary electrode 132Y on the other side of the first sustain electrode 130Y, and a second horizontal pattern extending horizontally from the second vertical pattern 131D. 131C.

The second storage electrode group 134 includes a second storage electrode 136Z, a second auxiliary electrode 134Z formed in parallel with the second storage electrode 136Z, and the second storage electrode 136Z and the second auxiliary electrode. A second pad holding electrode 135 formed on each of the electrodes 134Z is provided.

The second sustain electrode 134Z is formed of a metal electrode having good conductivity, and the second auxiliary electrode 134Z is formed of ITO having high light transmittance. The second pad holding electrode 135 is formed in a symmetrical form with the first pad holding electrode 131 and is made of ITO having good light transmittance.

When voltage is supplied to the first sustain electrode group 130 and the second sustain electrode group 134, the first and second auxiliary electrodes 132Y and 134Z located closest to each other cause initial discharge. Space charged particles are formed by the initial discharge of the auxiliary electrodes 132Y and 134Z, and the discharge is diffused toward the sustain electrodes 130Y and 136Z. At this time, in order for the initial discharge occurring between the auxiliary electrodes 132Y and 134Z to diffuse to the discharge occurring between the sustain electrodes 130Y and 136Z, the voltage applied to the sustain electrodes 130Y and 136Z is applied to the auxiliary electrodes 132Y. , 134Z). However, the pad holding electrodes 131 and 135 are formed in the sustain electrode groups 130 and 134 according to the present invention to cause the discharge between the sustain electrodes 130Y and 136Z even at a low discharge voltage. In other words, the wall charges formed by the pad holding electrodes 131 and 135 diffuse into the space to assist the initial discharge of the auxiliary electrodes 132Y and 134Z, thereby preventing the long pass discharge of the sustain electrodes 130Y and 136Z. It happens more easily. In other words, by lowering the discharge voltage, power consumption is reduced and efficient discharge is achieved.

As described above, the plasma display panel according to the present invention may cause long-gap discharge at a low voltage to increase luminance. In addition, the plasma display panel according to the present invention can improve the efficiency by reducing the power consumption by reducing the electrode area.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (15)

A first sustain electrode group including at least two electrodes, A second sustain electrode group including at least two electrodes; And a pad holding electrode extending toward an adjacent electrode from each of the electrodes of the first and second sustaining electrode groups. The method of claim 1, The pad holding electrode may include a first protruding pattern protruding from each of the electrodes; And a second protrusion pattern formed with the first protrusion pattern and a predetermined space therebetween. The method of claim 2, And the first protrusion pattern and the second protrusion pattern are T-shaped. The method of claim 3, wherein And a connection pattern connecting the first and second protrusion patterns. The method of claim 2, The first protruding pattern may include first and second vertical patterns protruding vertically from both edges of the sustain electrode; And a horizontal pattern connecting the first and second vertical patterns horizontally. The method of claim 5, And the second protrusion pattern is symmetrically formed in a vertical direction with the first protrusion pattern. The method of claim 2, The first protrusion pattern is a vertical pattern, And a horizontal pattern protruding horizontally from the vertical pattern. The method of claim 7, wherein And the second protruding pattern protrudes from the auxiliary electrode and is formed to be symmetrical with the first protruding pattern in left and right directions. The method of claim 1, And the pad holding electrode has a protruding pattern to which electrodes formed in each of the first and second sustaining electrode groups are connected. The method of claim 9, The protruding pattern may include a vertical pattern connecting the electrodes in a vertical direction; And a horizontal protrusion pattern protruding in the horizontal direction from the center of the vertical pattern. The method of claim 10, And wherein the protrusion pattern extends two horizontal protrusion patterns from the vertical pattern. The method of claim 9, And the protruding pattern is a zigzag pattern. The method of claim 1, And an address electrode formed in a direction crossing the sustain electrode group and configured to cause sustain discharge. The method of claim 1, The pad holding electrode is formed of a transparent conductive material. The method of claim 1, And the pad holding electrode is formed of a metal material.