KR100692058B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which a transparent electrode of a plasma display panel is improved.

The present invention relates to a plasma display panel including a front substrate having scan electrodes and sustain electrodes formed thereon, a rear substrate having address electrodes arranged to intersect the scan electrodes and sustain electrodes, and partition walls for partitioning discharge cells on the rear substrate. Each of the scan electrode and the sustain electrode in the discharge cell is composed of a bus electrode and a transparent electrode, and the transparent electrode has an upper transparent electrode and a lower transparent electrode formed to protrude toward the center of the discharge cell, and the upper transparent electrode and the lower transparent electrode, respectively. Is spaced apart from each other by a predetermined distance in the discharge cell.

According to the present invention, since the structure of the transparent electrode of the plasma display panel is improved, the light emission luminance and the discharge efficiency are improved.

Plasma Display Panel, Transparent Electrode, Light Emitting Luminance, Discharge Efficiency

Description

Plasma Display Panel

1 is a perspective view schematically showing the structure of a conventional plasma display panel.

2A and 2B illustrate stripe-type barrier rib structures of a conventional plasma display panel.

3A and 3B illustrate a lattice type barrier rib structure of a conventional plasma display panel.

4A illustrates a hexagonal delta partition structure of a conventional plasma display panel.

4B illustrates a rectangular delta partition structure of a conventional plasma display panel.

5 illustrates a bridge type transparent electrode of a conventional plasma display panel.

6A is a diagram showing an electrode structure of a plasma display panel as a first embodiment according to the present invention;

6B is a view showing an electrode structure of a plasma display panel as a second embodiment according to the present invention;

6C is a view showing an electrode structure of a plasma display panel as a third embodiment according to the present invention;

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

610: scan electrode 630: sustain electrode

610a, 630a: transparent electrode 610b, 630b: bus electrode

620: discharge cell 640: partition wall

d ₁ , d ₂ : distance w, w ₁ : width

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which a transparent electrode of a plasma display panel is improved.

In general, a plasma display panel is a partition wall formed between a front substrate and a rear substrate to form a unit cell, and each cell includes neon (Ne), helium (He), or a mixture of neon and helium (Ne + He) and An inert gas containing the same main discharge gas and a small amount of xenon is filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such a plasma display panel has a spotlight as a next generation display device because of its thin and light configuration.

1 is a perspective view showing the structure of a general plasma display panel.

As shown in FIG. 1, a plasma display panel includes a front substrate in which a plurality of sustain electrode pairs formed by pairing a scan electrode 102 and a sustain electrode 103 are formed on a front glass 101, which is a display surface on which an image is displayed. The rear substrate 110 having the plurality of address electrodes 113 arranged to intersect the plurality of sustain electrode pairs on the back glass 111 forming the back surface 100 and the rear surface is coupled in parallel with a predetermined distance therebetween. .

The front substrate 100 is made of a scan electrode 102 and a sustain electrode 103, that is, a transparent electrode (a) formed of a transparent ITO material and a metal material to mutually discharge and maintain light emission of the cells in one discharge cell. The scan electrode 102 and the sustain electrode 103 provided as the bus electrode b are included in pairs. The scan electrode 102 and the sustain electrode 103 are covered by one or more upper dielectric layers 104 that limit the discharge current and insulate the electrode pairs, and to facilitate the discharge conditions on the upper dielectric layer 104 top surface. A protective layer 105 on which magnesium oxide (MgO) is deposited is formed.

The rear substrate 110 is arranged in such a manner that a plurality of discharge spaces, that is, barrier ribs 112 of a stripe type (or well type) for forming discharge cells are maintained in parallel. In addition, a plurality of address electrodes 113 which perform address discharge to generate vacuum ultraviolet rays are arranged in parallel with the partition wall 112. On the upper side of the rear substrate 110, R, G, and B phosphors 114 which emit visible light for image display during address discharge are coated. A lower dielectric layer 115 is formed between the address electrode 113 and the phosphor 114 to protect the address electrode 113.

2A and 2B illustrate stripe-type barrier rib structures of a conventional plasma display panel. As shown in FIG. 2B, the partition wall 210 is arranged in a stripe shape while being perpendicular to the sustain electrode formed of the bus electrode 220 and the transparent electrode 230.

Such a stripe-type partition wall structure is a stripe-shaped partition wall structure, and the manufacturing process is simple. However, there is a problem that visible light generated at the time of discharge leaks in the stripe direction of the partition wall, and phosphor printing and exhausting are easy, but misdischarge and phosphor coating area affecting adjacent cells are small.

3A and 3B illustrate a lattice-shaped partition wall structure of a conventional plasma display panel. As shown in FIG. 3B, the partition wall 310 is arranged in a grid shape while being horizontal or vertical with the sustain electrode formed of the bus electrode 320 and the transparent electrode 330.

Such a lattice-shaped partition wall structure can designate each color cell to improve luminance, block leakage light, and prevent crosstalk in all directions.

However, the lattice-shaped partition wall structure has a small influence of the adjacent cells and a large coating area of the phosphor, which can increase the brightness, but causes a problem of poor exhaust.

4A and 4B are diagrams illustrating a delta-type partition wall structure of a conventional plasma display panel. First, as shown in FIG. 4A, the delta-type barrier rib structure in which the barrier rib shape is formed in a hexagonal structure is bent in a stripe type structure and formed in a structure similar to the lattice type. Therefore, the structure having the hexagonal partition structure has the characteristics of the advantages of the stripe type and the lattice type.

In other words, by forming the partition wall bent similarly to the stripe type structure, the impurity gas generated during discharge can be smoothly discharged, so the exhaust characteristics are improved and the shape of the partition wall is formed into a hexagonal structure similar to the lattice-shaped partition wall structure. It is possible to designate color cells to improve the luminance of light emitted, to block leakage light, and to prevent crosstalk in all directions.

FIG. 4B is a delta-type barrier rib structure in which the barrier rib shape is formed in a rectangular structure. Unlike the lattice type shown in FIG. 3A, one scan electrode 410 line is formed around the sustain electrode 430 line. The partition wall 440 partitioning the formed discharge cells 420 is formed to be spaced apart from the partition wall 440 partitioning the discharge cells 420 formed by another scan electrode 410 line.

At this time, the width h of the upper and lower discharge cells 420 is smaller than the width w of the left and right discharge cells 420. Since the rectangular structure formed in this way has a large area of the transparent electrode 450 of the scan electrode 410 and the sustain electrode 430, the discharge area in which the discharge occurs is widened, so that the luminous luminance and the discharge efficiency are improved.

5 illustrates a bridge type transparent electrode of a conventional plasma display panel. As shown in FIG. 5, a scan electrode 510 and a sustain electrode 530 are formed on a front substrate (not shown), and the address electrodes (not shown) and the discharge cells 520 arranged to intersect with each other are divided. The partition wall 540 is formed on the rear substrate (not shown).

 Here, each of the scan electrode 510 and the sustain electrode 530 includes transparent electrodes 510a and 530a having high sheet resistance and bus electrodes 510b and 530b. In this case, each of the transparent electrodes 510a and 530a has a hole having a predetermined shape in the center portion, and the remaining portions where the hole is not formed are connected to each other at the center portion of the discharge cell 520 to form a bridge type electrode. .

Since the bridge-type transparent electrodes 510a and 530a occupy a smaller area in the discharge cell space than the straight transparent electrodes shown in FIG. 4B, the amount of visible light emitted from the phosphor is reduced. Accordingly, the light emitting luminance of the bridge type transparent electrodes 510a and 530a is lower than that of the straight transparent electrode illustrated in FIG. 4B.

On the other hand, since the area of the bridge-type transparent electrodes 510a and 530a is reduced, the reactive power consumed for charging the discharge current and the capacitance of the electrode is reduced, so that the power consumption is lowered. The luminous efficiency is improved.

As described above, studies to improve light emission luminance and discharge efficiency by varying the barrier rib structure of the plasma display panel have been continuously conducted. However, in recent years, researches for improving the light emitting luminance and discharge efficiency of the plasma display panel by changing the structure of the transparent electrode have been continued.

In order to solve the above problems, an object of the present invention is to provide a plasma display panel that can improve the light emission luminance and discharge efficiency of the plasma display panel.

Plasma display panel of the present invention for solving the above technical problem is a front substrate formed with a scan electrode and a sustain electrode, a rear substrate formed with an address electrode arranged to cross the scan electrode and the sustain electrode, and a discharge cell on the back substrate In a plasma display panel including partition walls, a scan electrode and a sustain electrode are formed of a bus electrode and a transparent electrode in the discharge cell, and the transparent electrode is formed by protruding toward the center of the discharge cell. Each of the upper transparent electrode and the lower transparent electrode is spaced apart from each other by a predetermined distance in the discharge cell.

In addition, the upper transparent electrode and the lower transparent electrode is characterized in that the left and right symmetry in the discharge cell.

The predetermined distance is 10 µm or more and 100 µm or less and is kept constant.

The predetermined distance is 10 µm or more and 100 µm or less and is variable.

In addition, each of the upper transparent electrode or the lower transparent electrode in the discharge cell is characterized in that the width in the center direction of the discharge cell is kept constant.

In addition, each of the upper transparent electrode or the lower transparent electrode in the discharge cell maintains the width of the upper transparent electrode and the lower transparent electrode at a predetermined point in the direction of the center of the discharge cell, and gradually increases after a predetermined point and then again. After the point is characterized in that it is kept constant.

In addition, each of the upper transparent electrode or the lower transparent electrode in the discharge cell has the width between the upper transparent electrode and the lower transparent electrode in the left direction of the discharge cell or the right direction of the discharge cell is kept constant up to a predetermined point and then after a predetermined point. The plasma display panel of claim 1, wherein the plasma display panel is constantly increasing after the predetermined point.

In addition, the distance between the scan electrode and the sustain electrode in the discharge cell is characterized in that 100 ㎛ or more and 400 ㎛ or less.

In addition, each of the upper transparent electrode or each of the lower transparent electrode in the discharge cell is characterized in that formed to face each other with the center of the discharge cell therebetween.

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

<First Embodiment>

6A is a diagram showing an electrode structure of a plasma display panel according to a first embodiment according to the present invention. As shown in FIG. 6A, the plasma display panel is a delta partition wall structure having a partition wall shape having a quadrangular structure. As shown in FIG. 4B, a plasma display panel has a scan electrode 610 line around the sustain electrode 630 line. The partition wall 640 partitioning the discharge cells formed by the partition cell is spaced apart from the partition wall 640 partitioning the discharge cell 620 formed by another scan electrode 610 line at a predetermined interval.

In this case, each of the scan electrode 610 and the sustain electrode 630 in the discharge cell 620 is composed of bus electrodes 610b and 630b and transparent electrodes 610a and 630a, and the transparent electrodes 610a and 630a are discharged. An upper transparent electrode 610a and a lower transparent electrode 630a are formed to protrude toward the center of the cell 620.

Here, the upper transparent electrode 610a and the lower transparent electrode 630a have a symmetrical structure in the discharge cell 620 so that predetermined distances d ₁ and d ₂ are spaced apart from each other. At this time, the distance (d ₁ ) between the upper transparent electrode (610a) can be designed up to 10 ㎛ or more and 100 ㎛ or less, the distance (d ₂ ) between the upper transparent electrode (610a) and the lower transparent electrode (630a) is 100 ㎛ or more Designs up to 400 μm or less are possible.

Here, if the distance (d ₁ ) between the upper transparent electrode 610a is designed to be wider than the distance (d ₂ ) between the upper transparent electrode (610a) and the lower transparent electrode (630a) and the plurality of upper transparent electrode (610a) The discharge formed when one side between the upper transparent electrode 610a of the lower transparent electrode 630a and the lower transparent electrode 630a face each other occurs or disappears.

Therefore, the distance d ₁ between the upper transparent electrode 610a should be designed to be narrower than the distance d ₂ between the upper transparent electrode 610a and the lower transparent electrode 630a. In general, the distance d ₁ between the upper transparent electrode 610a is designed to be 10 μm, and the distance d ₂ between the upper transparent electrode 610a and the lower transparent electrode 630a is designed to be 100 μm. Most preferred.

On the other hand, since the width w between the left and right portions of the discharge cell 620 is wider than that of the conventional structure, the total area of the separated transparent electrodes 610a and 630a is also wider, so that the discharge area where discharge occurs becomes wider. The brightness and the discharge efficiency are improved.

In addition, each of the upper transparent electrode 610a and the lower transparent electrode 630a is spaced apart from each other at a distance d ₁ of 10 μm to form a protrusion constantly maintained in the center of the discharge cell 620. At this time, since the upper transparent electrode 610a and the lower transparent electrode 630a are separated from each other, an area where one side between each of the upper transparent electrode 610a and the lower transparent electrode 630a faces each other becomes smaller. The reactive power consumed for charging the discharge current and the capacitance of the capacitor is reduced, resulting in lower power consumption. Therefore, it is possible to drive with low power consumption and the luminous efficiency is improved.

Second Embodiment

6B is a view showing an electrode structure of a plasma display panel according to a second embodiment of the present invention. As shown in FIG. 6A, a partition wall 640 partitioning a discharge cell formed by one scan electrode 610 line around the sustain electrode 630 line is a discharge cell formed by another scan electrode 610 line. It is formed spaced apart from the partition 640 partitioning the 620 at a predetermined interval.

In this case, each of the scan electrode 610 and the sustain electrode 630 in the discharge cell 620 is made up of bus electrodes 610b and 630b and transparent electrodes 610a and 630a, and the transparent electrodes 610a and 630a are discharged. An upper transparent electrode 610a and a lower transparent electrode 630a are formed to protrude toward the center of the cell 620.

Here, the shape in which the transparent electrodes 610a and 630a protrude is in the discharge cell 620. The width w ₁ of the upper transparent electrode 610a and the lower transparent electrode 630a in the direction of the center of the discharge cell 620 is kept constant until a predetermined point, and gradually increases after the predetermined point and then again after the predetermined point. It is kept constant from now on.

6A, since the width W between the left and right portions of the discharge cells 620 is formed wider than that of the conventional structure, the entire area of the separated transparent electrodes 610a and 630a is also formed to be wide and discharged. Since the area becomes wider, the luminous luminance and discharge efficiency are improved.

In addition, each of the upper transparent electrode 610a and the lower transparent electrode 630a may be spaced apart from each other at a distance d ₁ varying from 10 μm to 100 μm, and formed in the center direction of the discharge cell 620. At this time, since the upper transparent electrode 610a and the lower transparent electrode 630a are separated from each other, an area where one side between each of the upper transparent electrode 610a and the lower transparent electrode 630a faces each other becomes smaller. Since the reactive power consumed for discharging the discharge current and the capacitance is reduced, the power consumption is lowered, so that driving with low power consumption is possible, and the discharge efficiency is improved.

Third Embodiment

6C is a view showing an electrode structure of a plasma display panel according to a third embodiment of the present invention. 6A and 6B, the partition wall 640 partitioning a discharge cell formed by one scan electrode 610 line centering on the sustain electrode 630 line is connected to the other scan electrode 610 line. It is formed spaced apart from the partition 640 partitioning the discharge cell 620 formed by a predetermined interval.

In this case, each of the scan electrode 610 and the sustain electrode 630 in the discharge cell 620 is made up of bus electrodes 610b and 630b and transparent electrodes 610a and 630a, and the transparent electrodes 610a and 630a are discharged. An upper transparent electrode 610a and a lower transparent electrode 630a are formed to protrude toward the center of the cell 620.

Here, the shape where the transparent electrodes 610a and 630a protrude is a point where the width W ₁ between the upper transparent electrode 610a and the lower transparent electrode 630a is predetermined in the left direction or the right direction of the discharge cell 620. It remains constant until then increases gradually after a predetermined point and again remains constant after a predetermined point.

In this case, the total area of the transparent electrodes 610a and 630a is also formed to be wide, so that the discharge region in which the discharge occurs is widened, so that the light emission luminance and the discharge efficiency are improved. In addition, since the upper transparent electrode 610a and the lower transparent electrode 630a are separated from each other, an area where one side between each of the upper transparent electrode 610a and the lower transparent electrode 630a faces each other becomes smaller, so that the electrode Since the reactive power consumed for discharging the discharge current and the capacitance is reduced, the power consumption is lowered, so that driving with low power consumption is possible, and the discharge efficiency is improved.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described above, since the structure of the transparent electrode of the plasma display panel is improved, the light emitting luminance and the discharge efficiency are improved.

Claims (15)

A plasma display panel comprising: a front substrate having a scan electrode and a sustain electrode formed thereon; a rear substrate having an address electrode arranged to intersect the scan electrode and the sustain electrode; and a partition wall partitioning discharge cells on the rear substrate; Each of the scan electrode and the sustain electrode in the discharge cell is made of a bus electrode and a transparent electrode, The transparent electrode includes a plurality of upper transparent electrodes and a plurality of lower transparent electrodes formed to protrude toward the center of the discharge cell, The separation distance between the upper transparent electrodes or the separation distance between the lower transparent electrodes is narrower in the center of the discharge cell than the discharge cell surrounding, the minimum separation distance is narrower than the discharge gap, the maximum separation distance is larger than the discharge gap. The method of claim 1, And the upper transparent electrode and the lower transparent electrode are symmetrical in the discharge cell. delete The method of claim 1, And a separation distance between the upper transparent electrodes or a distance between the lower transparent electrodes is 10 μm or more and 100 μm or less and varies. delete The method according to claim 1 or 2, Each of the upper transparent electrode or the lower transparent electrode in the discharge cell maintains the width of the upper transparent electrode and the lower transparent electrode to a predetermined point in a direction toward the center of the discharge cell, and gradually increases after the predetermined point. The plasma display panel is kept constant again after a predetermined point. delete The method of claim 1, And a distance between the upper transparent electrode and the lower transparent electrode in the discharge cell is 100 µm or more and 400 µm or less. The method according to claim 1 or 2, And each of the upper transparent electrode and each of the lower transparent electrodes in the discharge cell face each other with the center of the discharge cell interposed therebetween. A plasma display panel comprising: a front substrate having a scan electrode and a sustain electrode formed thereon; a rear substrate having an address electrode arranged to intersect the scan electrode and the sustain electrode; and a partition wall partitioning discharge cells on the rear substrate; Each of the scan electrode and the sustain electrode in the discharge cell is made of a bus electrode and a transparent electrode, The transparent electrode includes a plurality of upper transparent electrodes and a plurality of lower transparent electrodes formed to protrude toward the center of the discharge cell, The width of each of the upper transparent electrode and the lower transparent electrode increases as the center of the discharge cell around the discharge cell, And a separation distance between the upper transparent electrodes or a distance between the lower transparent electrodes is smaller than a discharge gap. The method of claim 10, And the upper transparent electrode and the lower transparent electrode are symmetrical in the discharge cell. The method of claim 10, The separation distance between the upper transparent electrode or the separation distance between the lower transparent electrode is 10㎛ 100㎛ less plasma display panel, characterized in that it is kept constant. The method of claim 10 or 11, Each of the upper transparent electrode or the lower transparent electrode in the discharge cell has a constant width between the upper transparent electrode and the lower transparent electrode in a left direction of the discharge cell or a right direction of the discharge cell to a predetermined point. The plasma display panel of claim 1, wherein the plasma display panel is gradually increased from the point of time and remains constant after the predetermined point. The method of claim 10, And a distance between the upper transparent electrode and the lower transparent electrode in the discharge cell is 100 µm or more and 400 µm or less. The method of claim 10 or 11, And each of the upper transparent electrode and each of the lower transparent electrodes in the discharge cell face each other with the center of the discharge cell interposed therebetween.

Images