KR19990054291A - Plasma display panel - Google Patents

Abstract

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of preventing crosstalk between adjacent cells. According to the present invention, barrier ribs are formed on each of the rear and front substrates, and electrodes are formed on the upper layers of the barrier ribs, and the barrier ribs are replaced by applying a predetermined voltage to the electrodes provided in the barrier ribs after sealing the rear and front substrates. Electric field is generated between them. Accordingly, even if a gap is generated between the partition walls due to the non-uniform height of the barrier rib, it is possible to prevent erroneous discharge from occurring because the charged particles generated during the gas discharge are prevented from moving to the adjacent discharge cells by the electric field. have.

Description

Plasma display panel

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel capable of preventing crosstalk between adjacent cells.

Plasma Display Panel (PDP), which is one of the flat panel display devices, can reduce its thickness and weight significantly compared to the CRT display device using an electron gun because its overall thickness can be made less than 1 cm. In addition, it has the advantage of easy manufacturing of a large display device.

Such a PDP generally defines an address electrode to which data is transmitted and an independent discharge space, and a rear substrate on which a barrier rib is formed to suppress crosstalk between adjacent cells and a discharge sustain electrode to generate a discharge. The formed front substrate is sealed, and the discharge gas is sealed in the discharge space therebetween.

FIG. 1 is a diagram illustrating a PDP according to the prior art, and as illustrated, a plurality of address electrodes 2 in a stripe shape are formed on the rear substrate 1 at equal intervals, and independent discharge therebetween. Partition walls 3 are formed to define the space. In addition, the address electrodes 2 are covered by the first dielectric film 4, and phosphors 5 are applied on the side of the partition 3 and the first dielectric layer 4 to realize colorization.

On the other hand, on the front substrate 6, a plurality of discharge sustaining electrodes 7 for generating a discharge are formed in a stripe at equal intervals, and the discharge sustaining electrodes 7 are covered by the second dielectric layer 8. A protective layer 9 such as an MgO film having a high secondary electron emission coefficient is formed thereon. Here, the discharge sustaining electrode 7 is composed of a transparent electrode 7a and a bus line 7b having a fine line width as shown.

The back and front substrates 1 and 6 are sealed so that the electrodes 2 and 7 formed on the respective substrates are orthogonal to each other. In this case, the discharge sustaining electrodes 7 are placed in one discharge cell. The dog is placed. In addition, a discharge gas 10 such as argon (Ar), neon (Ne), or xenon (Xe) is enclosed in the discharge space defined by the partitions 3.

However, in the PDP according to the related art, since the heights of the barrier ribs formed on the rear substrate are not uniform, a gap occurs after sealing of the substrates in the barrier rib portion having a relatively low height, and thus, during gas discharge. The charged particles are moved to the adjacent cells through this gap, there was a problem that the mis-discharge occurs.

Accordingly, an object of the present invention is to provide a PDP capable of preventing crosstalk between adjacent cells due to movement of charged particles.

1 is a cross-sectional view for explaining a conventional plasma display panel.

2 is a cross-sectional view illustrating a plasma display panel of the present invention.

(Explanation of symbols for the main parts of the drawing)

1: back substrate 2: address electrode

3a, 3b partition 4: first dielectric layer

5: phosphor 6: front substrate

7: discharge sustain electrode 8: second dielectric layer

9: protective layer 10: discharge gas

11a, 11b: electrode

In order to achieve the above object, the present invention first forms partitions having a predetermined height on each of the rear and front substrates, and forms electrodes on the upper part of the partition walls, and then seals the rear and front substrates in a conventional manner. In FIG. 1, a predetermined voltage is applied to electrodes formed in the partition walls, and an electric field is formed between the partition walls by applying a voltage with opposite polarities to the electrodes formed in the joined partition walls.

In this case, even if the height of the partition wall is not uniform and a gap is generated between the partition walls of the predetermined portion, the movement of the charged particles through the gap is prevented by the electric field, thereby preventing crosstalk between adjacent cells.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying FIG. 2. Here, the same parts as in Fig. 1 are denoted by the same reference numerals.

2 is a view for explaining a PDP according to the present invention, as shown, a pair of glass substrates, that is, the back and front substrates (1, 6) is sealed, the back substrate for transmitting data Address electrodes 2, a first dielectric layer 4 for protecting them, and a phosphor 5 for realizing color are formed, and on the front substrate 6, transparent electrodes 7a and bus electrodes 7b are formed. The discharge sustain electrodes 7 formed thereon, and the second dielectric layer 8 and the protective layer 9 for protecting them are formed. In addition, the discharge gas 10 is sealed in the space between the substrates 1 and 6.

Meanwhile, partitions 3a and 3b for defining an independent discharge space and suppressing crosstalk between adjacent cells are formed in the back and front substrates 1 and 6, as shown. In the upper portion of the partitions 3a and 3b, electrodes 11a and 11b having smaller widths are formed.

Here, referring to the process for forming the partitions 3a and 3b on each substrate, first, after forming the partition wall having a predetermined height through the printing and drying process of about 3 to 5 times, the conductive paste is applied to the upper portion. Print and dry about 2 times to form an electrode. Then, the printing and drying process is again performed on the partition including the electrode to form a partition having a height of 50 to 70 µm.

The PDP according to the present invention having the above structure has electrodes formed in the partitions 3a and 3b before applying a predetermined voltage to the discharge sustaining electrodes 7 provided on the front substrate 5 during gas discharge. A predetermined voltage is applied to the upper and lower partitions 3a and 3b by applying a predetermined voltage to the electrodes 11a and 11b and applying voltages having opposite polarities to the electrodes 11a and 11b respectively formed in the opposed upper and lower partitions 3a and 3b. Generates an electric field between

Such an electric field prevents charged particles generated during gas discharge from being moved to an adjacent cell. Thus, even if the heights of the respective partition walls formed on each substrate are not uniform, a gap between the upper and lower partition walls is formed at a predetermined portion. Although generated, an electric field is formed between the opposing upper and lower partition walls, so that when a discharge is applied to the discharge sustaining electrode, a charged particle is moved to an adjacent discharge cell by the electric field. By not doing so, crosstalk between adjacent cells can be prevented.

As described above, the PDP according to the present invention forms a partition on each of the rear and front substrates, and electrodes are formed on the upper portion of the partition, so that the voltage of the opposite polarity applied to the electrodes of the upper and lower partitions during gas discharge is increased. Even if the gap caused by the height of the non-uniform bulkhead is generated by the electric field caused by the electric field, it is possible to prevent the charged particles from moving to the adjacent discharge cell by the electric field to prevent the mis-discharge occurs, accordingly, the characteristics of the PDP Can be improved.

Meanwhile, although specific embodiments of the present invention have been described and illustrated, modifications and variations can be made by those skilled in the art. Accordingly, the following claims are to be understood as including all modifications and variations as long as they fall within the true spirit and scope of the present invention.

Claims (2)

A pair of glass substrates are opposed to each other, and the plasma display panel is provided with partition walls for defining independent discharge spaces between the glass substrates and preventing crosstalk between adjacent cells. The barrier rib is formed on each of the glass substrates, and an upper layer of the barrier ribs formed on each of the substrates is characterized in that the electrode for generating an electric field is formed. The plasma display panel of claim 1, wherein a height of the barrier rib formed on each of the glass substrates is 50 to 70 µm.