KR100705803B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel including an electrode.

The present invention relates to an address electrode including a transparent electrode and a metal electrode formed on a front substrate, and a first horizontal barrier rib formed on a first dielectric layer to intersect an address electrode and a first dielectric layer formed to cover the address electrode, thereby partitioning a discharge space. And a scan electrode is formed on one side of each of the second and third horizontal barrier ribs, the first horizontal barrier rib, and the second horizontal barrier rib, and a sustain electrode is formed on the other side of the barrier rib, and the scan electrode is formed on one side of the first horizontal barrier rib in the discharge space. And a sustain electrode formed on the other side of the second horizontal partition wall so as to face the scan electrode, wherein at least one hole is formed on the transparent electrode.

Hole, transparent electrode, address electrode, auxiliary electrode

Description

Plasma Display Panel

1 is a view showing the structure of a conventional three-electrode AC surface discharge type plasma display panel.

2A, 2B and 2C schematically show the structure of a conventional plasma display panel.

3A is a schematic diagram showing the structure of a plasma display front panel as a first embodiment according to the present invention;

3b shows a second embodiment according to the invention;

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel including an electrode.

In general, a plasma display panel (hereinafter referred to as "PDP") displays an image including a character or a graphic by emitting phosphors by 147 nm ultraviolet rays generated when a He + Xe or Ne + Xe inert mixed gas is discharged. Done.

Such PDPs are not only thin and large in size, but also greatly improved in quality due to recent technology development.

In particular, the three-electrode AC surface discharge type PDP has advantages of low voltage driving and long life because wall charges are accumulated on the surface during discharge and protect the electrodes from sputtering caused by the discharge.

1 is a perspective view schematically showing the structure of a conventional plasma display panel. As shown in the PDP 100, the front substrate 10, which is the display surface on which an image is displayed, and the rear substrate 20 forming the rear surface are coupled in parallel with a predetermined distance.

The front substrate 10 has a sustain electrode 11 for maintaining light emission of a cell by mutual discharge in one pixel below, that is, a transparent electrode 11a formed of a transparent ITO material and a bus electrode 11b made of a metal material. The sustain electrodes 11 are formed in pairs.

The sustain electrode 11 is covered by a dielectric layer 12 that limits the discharge current and insulates the electrode pairs, and a protective layer in which magnesium oxide (MgO) is deposited on the upper surface of the dielectric layer 12 to facilitate discharge conditions. (13) is formed.

In the rear substrate 20, a plurality of discharge spaces, that is, partitions 21 for forming a cell are arranged in parallel with each other, and a vacuum ultraviolet ray is generated by performing address discharge at a portion crossing the sustain electrode 11. A plurality of address electrodes 22 are formed.

In addition, an upper surface of the rear substrate 20 is coated with R, G, and B fluorescent layers 23 that emit visible light for image display during address discharge.

2A and 2B schematically show still another structure of a conventional plasma display panel. As shown in FIGS. 2A and 2B, an address electrode 110, a scan electrode 112, and a sustain electrode 114 are formed on the front substrate 100.

First, the transparent electrode 110a is formed on the front substrate 100, and at least one metal electrode 110b is formed at the edge of the transparent electrode 110a in the longitudinal direction. Here, the address electrode 110 includes a transparent electrode 110a and a metal electrode 110b. In the structure of the conventional plasma display panel, only the scan electrode and the sustain electrode are formed on the front substrate 100. However, in the present invention, the address electrode 110 including the transparent electrode 110a and the metal electrode 110b is formed on the front substrate 100. Here, the address electrode 110 includes the transparent electrode 110a and the metal electrode 110b in order to form more wall charges in the scan electrode 112 and the address discharge.

Thereafter, the first dielectric layer 122a is formed on the metal electrode 110b.

In this case, the first dielectric layer 122a serves to prevent an electrical short between the address electrode 110, the scan electrode 112, and the sustain electrode 114, which are manufactured later.

Thereafter, the plurality of first horizontal barrier ribs 116 formed on the address electrode 110 to intersect the plurality of address electrodes 110 and the address electrodes 110 formed on the front substrate 100 and partition the discharge space. The second horizontal partition wall 118 is formed. In this case, an electrode made of a metal material is formed around the first horizontal partition wall 116 and the second horizontal partition wall 118, which serves as the scan electrode 112 and the sustain electrode 114.

Here, a second dielectric layer 122b formed to cover the first horizontal barrier rib 116 and the second horizontal barrier rib 118 and the scan electrode 112 and the sustain electrode 114 is formed for AC driving. A protective layer 124 is formed on which magnesium oxide (MgO) is deposited to facilitate the emission of electrons.

In this case, since the deposition area of magnesium oxide (MgO) is deposited on the first and second horizontal partition walls 116 and 118, the deposition area can be maximized and the discharge characteristics can be improved.

In addition, since the wide discharge gap formed by the scan electrode 112 and the sustain electrode 114 generates ultraviolet rays in the positive column region, brightness and luminous efficiency can be improved.

Meanwhile, the discharge space 135 formed between the scan electrode 112 and the sustain electrode 114 of the front substrate 100 and the light emitting space of the phosphor 130 formed on the rear substrate 200 are separated from each other.

At this time, the scan electrode 112 formed on the side of the first horizontal partition wall 116 in the discharge space 135 and the side of the second horizontal partition wall 118 to face the scan electrode 112 in the discharge space 135. The third horizontal partition wall 126 and the fourth horizontal partition wall 128 are formed on the rear substrate 200 facing the front substrate 100 formed of the sustain electrode 114 formed thereon.

Although not shown, a first vertical partition wall (not shown) and a second vertical partition wall (not shown) are disposed between the address electrodes 110 to intersect the first horizontal partition wall 116 and the second horizontal partition wall 118. A third vertical partition wall (not shown) and a fourth vertical partition wall (not shown) are formed to intersect the third horizontal partition wall 126 and the fourth horizontal partition wall 128 with the light emitting space therebetween.

The first vertical bulkhead (not shown), the second vertical bulkhead (not shown), the third vertical bulkhead (not shown) and the fourth vertical bulkhead (not shown) are preferably formed to overlap each other.

Subsequently, the phosphor layer 130 is applied to the light emitting space between the third horizontal partition wall 126 and the fourth horizontal partition wall 128, and the phosphor layer is also applied to the third vertical partition wall and the fourth vertical partition wall.

As described above, the structure of the plasma display panel according to the present invention has a space in which the first horizontal partition 116, the second horizontal partition 118, the third horizontal partition 126, and the fourth horizontal partition 128 overlap each other. Two are formed, and the space formed on the front substrate 100 is the discharge space 135, and the scan electrodes 112 and the sustain electrodes 114 formed on the first and second horizontal partition walls 116 and 118 are formed. Plasma discharge is caused by using opposite discharge and positive column area of discharge area.

In addition, the phosphor 130 is coated in the space formed on the rear substrate 200, and receives visible ultraviolet rays generated by plasma discharge to generate visible light.

In the related art, the light emission efficiency is reduced through the negative glow discharge due to the short discharge gap, but the wide discharge gap formed by the scan electrode 112 and the sustain electrode 114 of the present invention generates ultraviolet rays in the positive light region. Therefore, the brightness and luminous efficiency are improved.

As described above, the structure of the plasma display panel according to the present invention includes the discharge space 135 formed between the scan electrode 112 and the sustain electrode 114 of the front substrate 100 and the phosphor 130 formed on the rear substrate 200. The light emitting space is separated. This structure is completely electrically separated in the case of the rear glass substrate 200. Therefore, the light emitting space of the phosphor 130 is not affected by the electric field 140, as shown in Figure 2c, there is no collision phenomenon by the charged particles. Therefore, there is no problem of deterioration of the phosphor 130 and the lifespan becomes long.

However, the above-described structure in which the discharge space and the light emitting space are separated has a high sheet resistance of the transparent electrode formed on the front substrate, which consumes a lot of current and thus increases power consumption. Therefore, the discharge start voltage is increased and the jitter characteristic is also deteriorated.

Accordingly, the present invention is to solve the above problems, by forming one or more holes in the transparent electrode in a polygonal shape and a circular or elliptical shape and forming a metal electrode connected to the address electrode to reduce the sheet resistance of the transparent electrode and consume An object of the present invention is to provide a plasma display panel capable of lowering power.

The present invention for achieving the above object is formed on the first dielectric layer so as to cross the address electrode and the address electrode and the address electrode including a transparent electrode and a metal electrode formed on the front substrate and covering the address electrode to form a discharge space A scan electrode is formed on one side of each of the first and second horizontal partition walls, the first horizontal partition and the second horizontal partition partitioning, and a sustain electrode is formed on the other side of the first horizontal partition wall and the second horizontal partition wall. And a sustain electrode formed on the other side of the second horizontal partition wall so as to face the scan electrode and the scan electrode formed on one side, wherein at least one hole is formed on the transparent electrode.

In addition, the hole is characterized in that the polygonal shape.

In addition, the hole is characterized in that the circular shape or oval shape.

The auxiliary electrode may be connected to the address electrode.

The display device may further include a second dielectric layer formed to cover the first and second horizontal barrier ribs and the scan electrode and the sustain electrode.

Further, a third horizontal partition wall formed on the front substrate so as to intersect the first horizontal partition and the second horizontal partition wall and formed on the rear substrate facing the front substrate and the first vertical partition wall and the second vertical partition wall formed between the address electrodes; Formed on the third vertical bulkhead and the fourth vertical bulkhead and the third horizontal bulkhead and the fourth horizontal bulkhead and the fourth horizontal bulkhead and the third vertical bulkhead and the fourth vertical bulkhead formed to intersect the fourth horizontal bulkhead, the third horizontal bulkhead and the fourth horizontal bulkhead. It is characterized by further comprising a phosphor layer.

In addition, the first horizontal bulkhead, the second horizontal bulkhead, the third horizontal bulkhead and the fourth horizontal bulkhead are formed to overlap each other, and the first vertical bulkhead, the second vertical bulkhead, the third vertical bulkhead and the fourth vertical bulkhead are overlapped with each other. Characterized in that formed.

In addition, at least one metal electrode is formed at an edge in the longitudinal direction of the transparent electrode.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.

3A is a diagram schematically showing the structure of a plasma display front panel as a first embodiment according to the present invention. First, the structure of the plasma display panel of the present invention is formed in the same manner as shown in Figs. 2A to 2C. However, as shown in FIG. 3A, one or more holes 335 are formed in the transparent electrode 315. The holes 355 may have a polygonal shape, but may also be formed in a circular shape and an elliptical shape.

As described above, the at least one hole 335 is formed in the transparent electrode 315 in order to reduce power consumption by reducing the sheet resistance of the transparent electrode 315. Therefore, the discharge start voltage is lowered and the jitter characteristic of the overall driving circuit is improved.

Since the process is formed in the same process as in Figures 2a to 2b will be omitted below.

3B is a view showing a second embodiment according to the present invention. First, the second embodiment according to the present invention is formed in the same manner as the first embodiment described above with reference to FIG. 3A. Again, as shown in FIG. 3B, one or more holes 335 are formed in the transparent electrode 315, which may be formed in a circular shape but also in a polygonal shape and an elliptical shape.

The at least one hole 335 is formed in the above-mentioned transparent electrode 315 in order to reduce power consumption by reducing the sheet resistance of the transparent electrode 315 as shown in FIG. 3A. Accordingly, this also lowers the discharge start voltage and improves the jitter characteristic of the driving circuit.

Meanwhile, unlike FIG. 3A, since the auxiliary electrode 322a of the metal material connected to the address electrode 322 is formed on the transparent electrode 315, the sheet resistance of the transparent electrode 315 can be further reduced, resulting in power consumption generated during driving. The benefit is improved.

Since the process is formed in the same manner as described above in Figure 3a will be omitted below.

 As described above, the present invention forms an auxiliary electrode connected to at least one hole and an address electrode in the transparent conductor layer, thereby lowering sheet resistance and power consumption, thereby reducing discharge start voltage and improving jitter characteristics.

Claims (8)

An address electrode including a transparent electrode and a metal electrode formed on the front substrate; A first dielectric layer formed to cover the address electrode; First and second horizontal barrier ribs formed on the first dielectric layer so as to intersect the address electrode to define a discharge space; Scan electrodes are formed on one side of each of the first and second horizontal bulkheads, and sustain electrodes are formed on the other side thereof. And a sustain electrode formed on the other side of the second horizontal partition wall so as to face the scan electrode and the scan electrode formed on one side of the first horizontal partition wall in the discharge space, And at least one hole is formed on the transparent electrode. The method of claim 1, And said hole has a polygonal shape. The method of claim 1, The hole is a plasma display panel, characterized in that the circular shape or elliptical shape. The method of claim 1, And an auxiliary electrode connected to the address electrode. The method of claim 1, And a second dielectric layer formed to cover the first and second horizontal barrier ribs, the scan electrode, and the sustain electrode. The method of claim 1, A third vertical partition wall and a second vertical partition wall formed on the front substrate so as to intersect the first horizontal partition wall and the second horizontal partition wall, and formed on the rear substrate facing the front substrate; A horizontal barrier rib and a fourth horizontal barrier rib, a third vertical barrier rib and a fourth vertical barrier rib formed to intersect the third horizontal barrier rib and a fourth horizontal barrier rib, and the third horizontal barrier rib and the fourth horizontal barrier rib and the third vertical barrier rib And a phosphor layer formed on the fourth vertical partition wall. The method of claim 6, The first horizontal partition wall, the second horizontal partition wall, the third horizontal partition wall, and the fourth horizontal partition wall are formed to overlap each other, and the first vertical partition wall, the second vertical partition wall, and the third vertical partition wall and the fourth vertical partition wall are mutually different. Plasma display panel, characterized in that formed to overlap. The method of claim 1, And at least one metal electrode is formed at an edge in the longitudinal direction of the transparent electrode.

Images