KR100726644B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a plasma display panel which improves exhaust characteristics and brightness by improving a barrier rib structure of a panel. The present invention, the front substrate for displaying an image; A rear substrate arranged parallel to the front substrate at regular intervals; Form a plurality of cells on the back substrate, characterized in that the open cell and the closed cell are formed together on the one back substrate. The rear substrate has the closed cell formed at the center thereof and the open cell formed at the periphery thereof. It is preferable that the open cell does not have one side partition between adjacent cells. Accordingly, in the barrier rib structure according to the present invention, the open barrier ribs on the left and right side portions exhibit smooth exhaust characteristics before injection of the discharge gas, and the closed barrier ribs in the center portion have an effect of increasing luminance by increasing the phosphor coating area.

Plasma, Display, Panel, Bulkhead, Closed, Open, Striped, Well, Fishbone, Luminance, Mixed

Description

Plasma Display Panel

1 is a perspective view schematically showing the structure of a conventional PDP.

Figure 2 is a plan view of the main portion showing a stripe-type barrier rib structure as an open barrier rib structure of the conventional PDP.

Figure 3 is a plan view of the main portion showing a well-type partition wall structure as a closed partition wall structure of a conventional PDP.

Figure 4 is a plan view of the main portion showing a fish bone (Fish Bone) type partition structure as a semi-closed partition structure of the conventional PDP.

5 is a plan view of a main portion of an embodiment of a plasma display panel having a mixed partition structure according to the present invention;

6 is a perspective view of FIG.

7 is a plan view of a main portion of another embodiment of the plasma display panel having the mixed partition structure according to the present invention;

 <Description of the symbols for the main parts of the drawings>

200: back substrate 201: dielectric layer

202: address electrode 203: phosphor

210: stripe type partition 211: open cell

220: well type bulkhead 223: closed cell

221, 241 vertical bulkheads 222, 242 horizontal bulkheads

230: exhaust port 240: fishbone type bulkhead

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 improves exhaust characteristics and brightness by improving a partition structure of the panel.

In general, a plasma display panel (hereinafter referred to as a PDP) is a partition wall formed between a front substrate and a rear substrate, forming one unit cell, and in each cell, Ne, Helium, or a mixture of neon and helium A main discharge gas such as gas (Ne + He) and an inert gas containing a small amount of xenon are filled. When the gas filled in the cell is discharged by the high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits the fluorescent material formed between the partition walls to generate visible light, so that a predetermined image is displayed on the entire panel. Is implemented.

Such a PDP has been spotlighted as a next generation display device due to various characteristics such as easy to enlarge, thin and light configuration, wide viewing angle, good screen uniformity, and no influence on magnetic field.

1 is a perspective view schematically showing the structure of a conventional PDP.

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 the discharge cells by mutual discharge in one pixel below, that is, a transparent electrode 11a made of a transparent ITO material and a bus electrode made of a metal material. The sustain electrodes 11 provided as 11b) 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 protects the upper surface of the dielectric layer 12 by depositing magnesium oxide (MgO) to facilitate discharge conditions. Layer 13 is formed.

The rear substrate 20 is arranged so that the partition walls 21 for forming a plurality of discharge spaces, that is, discharge cells, are arranged in parallel and perform address discharge at a portion crossing the sustain electrode 11 to generate vacuum ultraviolet rays. A plurality of address electrodes 22 are arranged in parallel with the partition wall 21.

In addition, an upper surface of the rear substrate 20 is coated with an RGB fluorescent layer 23 that emits visible light for image display upon address discharge, and absorbs external light generated outside the front substrate 10 on the upper surface of the partition wall. The black matrix 21a performs a function of blocking light to reduce reflection and improving a color purity and contrast of the front substrate 10.

A mixed inert gas such as He + Xe, Ne + Xe, He + Xe + Ne for gas discharge is injected into the discharge space provided between the front substrate 10, the rear substrate 20, and the partition wall 21.

As described above, the partition walls 21 for forming a plurality of discharge spaces, that is, cells on the rear substrate 20 are arranged to be parallel to each other, and the partition walls 21 have luminance characteristics, exhaust characteristics, and phosphor coating area. It is variously designed in consideration of the back.

2 to 4 illustrate a partition structure of a conventional plasma display panel, and the partition wall will be described with reference to the discharge gas as follows.

In general, in manufacturing a PDP, the front substrate formed by sequentially forming electrodes and dielectrics and the back substrate formed by sequentially forming electrodes, dielectrics, barrier ribs, and phosphors are bonded to each other and sealed, and the inside of the panel is evacuated. After the exhaust is completed, an inert gas is sealed into the panel.

At this time, the inside of the panel is evacuated to remove and remove impurities such as moisture adsorbed on the wall surface. The internal gas is sucked into the vacuum pump from the air vent provided on the rear side while the substrate is heated.

However, in such an exhaust treatment process, the partition wall impedes the smooth ventilation of the gas in the discharge space, and thus the exhaust treatment process takes a long time, and in particular, a part far away from the vent hole has a problem that impurities remain.

When the inside of the panel is insufficiently cleaned, the discharge gas encapsulated later and the air and impurities remaining inside the panel may be mixed to change the discharge gas composition, thereby making the display operation unstable.

FIG. 2 is a plan view of main parts of a stripe-type barrier rib structure as an open barrier rib structure of a conventional PDP.

As shown, the stripe-type barrier ribs 21 are arranged on the rear substrate 20 at regular intervals in a stripe shape that intersects the sustain electrodes (not shown) of the front substrate at right angles. Therefore, the left and right side surfaces are blocked by the partition wall 21, and the upper and lower surfaces form an open structure.

Although the stripe type barrier rib structure has a relatively simple manufacturing process, there is a problem that visible light generated at the time of discharge leaks in the stripe direction of the barrier rib, and the phosphor is easily printed and exhausted, but the false discharge and the phosphor affecting adjacent cells. There is a problem that the coating area is small.

3 is a plan view of main parts of a well-type barrier rib structure as a closed barrier rib structure of a conventional PDP.

As illustrated, the well type partition wall 30 has a vertical partition wall 31 and a horizontal partition wall 32 arranged in a lattice or well shape on the lower substrate 20. Therefore, the upper, lower, left and right sides of the cell form a structure in which all of the partition walls 31 and 32 are closed.

In the well type partition wall structure, each color cell can be individually designated to improve brightness and block leakage light. In addition, crosstalk in all directions can be prevented, but the manufacturing process is difficult, which makes it difficult to manufacture. In addition, although the influence of adjacent cells is small and the coating area of the phosphor is large, the luminance can be increased. There is a problem that the exhaust is not good.

Figure 4 is a plan view of the main portion showing a fish bone (Fish Bone) type partition structure as a semi-closed partition structure of the conventional PDP.

As shown, the fishbone type partition 40 has a vertical partition 41 and a horizontal partition 42 is formed on the lower substrate 20, the vertical partition 41 is formed in a stripe type, horizontal partition wall 42 is formed in a part open. Accordingly, the left and right side surfaces of the cell are closed by the vertical bulkhead 41, and the upper and lower surfaces form a structure in which only part of the cell is closed by the horizontal bulkhead 42.

The quasi-closed (quasi-open) partition wall structure is proposed to compensate for the shortcomings of the stripe partition structure and the lattice-shaped partition wall structure, but it still has many problems in the exhaust role. There is a problem that the area is reduced to lower the brightness.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and has a partition structure in which open and closed partition walls are formed together on one panel, thereby providing a plasma display panel which simultaneously improves exhaust characteristics and brightness. Its purpose is to.

Plasma display panel according to the present invention for achieving the above object, the front substrate for displaying an image; A rear substrate arranged parallel to the front substrate at regular intervals; Form a plurality of cells on the back substrate, characterized in that the open cell and the closed cell are formed together on the one back substrate.

The rear substrate has the closed cell formed at the center thereof and the open cell formed at the periphery thereof. It is preferable that the open cell does not have one side partition between adjacent cells.

Hereinafter, the partition structure of the plasma display panel according to the present invention will be described in detail with reference to FIGS.

FIG. 5 is a plan view showing main parts of an example of a plasma display panel having a mixed partition structure according to the present invention, and FIG. 6 is a perspective view of FIG.

As shown, the partition structure of the present invention is that the open cell and the closed cell are formed together on one back substrate.

That is, as shown in FIG. 5, the stripe-type partition wall 210 is provided to form the open cell 211, and the vertical and horizontal partitions 221 and 222 are formed to form the closed cell 223. Well type partition wall 220 is provided. Therefore, in the present invention, the two kinds of cells 211 and 223 are formed together on one back substrate 200.

As shown, the stripe-type partition wall 210 is arranged on the rear substrate 200 at regular intervals in a stripe shape at right angles to the sustain electrode (not shown) of the front substrate. Accordingly, the open cell 211 is blocked by the stripe-type partition wall 210, and the upper and lower surfaces thereof are blocked, and the upper and lower surfaces thereof are open.

In the well type partition wall 220, the vertical partition wall 221 and the horizontal partition wall 222 are arranged in a lattice or well shape on the lower substrate 200. Accordingly, the closed cell 223 forms a structure in which the top, bottom, left and right sides are all closed by the well type partition wall 220.

Here, the closed cell 223 is formed at the center of the rear substrate 200, and the open cell 211 is formed at the periphery, that is, the left and right sides.

In addition, the open cell 211 is more preferably formed in the vicinity of the exhaust port 230 on the back substrate 200 due to the exhaust characteristics.

Therefore, in the partition structure according to the present invention, the open cells 211 in the left and right side portions exhibit smooth exhaust characteristics before injection of the discharge gas, and the closed cells 223 in the center portion can improve luminance by increasing the phosphor coating area. .

7 is a plan view illustrating main parts of another embodiment of the plasma display panel having the mixed partition structure according to the present invention.

As shown, the partition structure according to another embodiment of the present invention, as the partition for forming the open cell 243, the fishbone type partition wall 240 is applied.

As shown, the fishbone type partition wall 240 has a vertical partition wall 241 and a horizontal partition wall 242 on the lower substrate 200, the vertical partition wall 241 is formed in a stripe type, horizontal partition wall 242 is formed in a partially open form.

Accordingly, the left and right side surfaces of the cell 243 are closed by the vertical partition wall 241, and the upper and lower surfaces of the cell 243 are partially closed by the horizontal partition wall 242.

In addition, the open cell 243 by the semi-closed (quasi-open) fishbone type partition wall 240 is formed on the left and right sides of the back substrate 200, the closed type by the well type partition wall 220. The cell 223 is formed at the center of the back substrate 200.

Therefore, the inside of the panel is evacuated before the discharge gas is filled and impurities are removed by removing impurities such as moisture adsorbed on the wall surface. In the related art, the presence of the partition wall impedes the smooth ventilation of the gas in the discharge space. The treatment process took a long time. In particular, impurities away from the vent hole remain. However, in the partition structure according to the present invention as described above, the open cells in the left and right side portions exhibit smooth exhaust characteristics before the injection of the discharge gas, and the closed cells in the center portion can improve luminance by increasing the phosphor coating area.

Although the above has been illustrated and described with respect to preferred embodiments of the present invention, the present invention is not limited to the above-described embodiments, and the general knowledge in the field to which the present invention pertains without departing from the gist of the present invention claimed in the claims. Of course, any person having the various modifications can be made, and such changes are within the claims.

As described above, according to the plasma display panel according to the present invention, the open type and the closed type cells have a structure formed together on one panel, thereby improving the exhaust characteristics and the brightness simultaneously. Particularly, the cell arrangement according to the present invention. In the structure, the open cells on the left and right side parts exhibit smooth exhaust characteristics before the injection of the discharge gas, and the closed cells on the center part have an effect of increasing luminance by increasing the phosphor coating area.

Claims (3)

A front substrate for displaying an image; A rear substrate arranged parallel to the front substrate at regular intervals; Form a plurality of cells on the back substrate, the open cell and the closed cell are formed together on the one back substrate,  The closed cell is formed in the center portion of the back substrate, and the open cell is formed in the peripheral portion of the back substrate. delete The method of claim 1, The open cell, Plasma display panel, characterized in that there is no one side partition wall between adjacent cells.

Images