KR100229075B1 - Ac color plasma display panel - Google Patents

Abstract

According to an exemplary embodiment of the present invention, protrusions having a lower height than the barrier ribs are respectively formed on the rear substrates between the barrier ribs, and address electrodes are formed on the rear substrate and the protrusions between the barrier ribs. The present invention relates to an AC color plasma display panel in which discharge and light emitting regions are increased by forming phosphor layers thereon. A protrusion is formed on a back substrate between each partition wall, and an address electrode and a phosphor layer are stacked on the protrusion to form a protrusion. Since the area of the address electrode and the phosphor layer is increased by the corresponding area, the discharge and light emitting areas of each cell are increased to increase the uniformity, the luminous efficiency, and the brightness of the image, and are formed in the space between the partitions and the protrusions. The phosphor layer is opened at different angles by ultraviolet and visible light. Because they can be re here one has the effect that at the same time that the light emitting efficiency and brightness increase in the weight of each cell is realized with a wide view angle.

Description

AC color plasma display panel

The present invention relates to an AC color plasma display panel, and in particular, protrusions having a lower height than the barrier ribs are respectively formed on the rear substrates between the barrier ribs, and address electrodes are formed on the rear substrates between the barrier ribs and the protrusions, respectively. The present invention relates to an AC color plasma display panel in which a discharge layer and an emission region are increased by forming phosphor layers on portions of side surfaces of the barrier ribs and the address electrodes, respectively.

In general, a color plasma display panel is a light emitting device that displays a color image by using a gas discharge phenomenon occurring inside each discharge cell. The manufacturing process is simple, the screen is easy to be enlarged, and the response speed is large. BACKGROUND OF THE INVENTION A direct view type image display device having a screen, in particular, has been spotlighted as a display element of an image display device for the HDTV (High Definition TeleVision) era.

In addition, the color plasma display panel may be largely divided into an AC (Alternating Current) type and a DC (Direct Current) type, that is, an AC color plasma display panel and a DC voltage driven by a sine wave AC voltage or a pulse voltage. It is divided into a DC color plasma display panel that is driven.

The panel of Fujitsu, Japan, which is one of the AC color plasma display panels according to the prior art, has a front distance 51 and a predetermined distance between the front substrate 51 and the front substrate 51, as shown in Figs. A rear substrate 52 disposed in parallel with each other, a plurality of partition walls 53 formed at predetermined intervals between the front substrate 51 and the rear substrate 52, and a rear substrate of the front substrate 51 ( 52 and a plurality of first and second storage electrode pairs 54 and 55 arranged and arranged at predetermined intervals so as to be orthogonal to the partition 53 on the opposite surface to the partition 53, and the back substrate 51 between the partition 53. A plurality of address electrodes 56 formed thereon, and a plurality of phosphor layers 57 respectively formed on the back substrate 52 and the address electrodes 56 between the partition walls 53 and on portions of the side surfaces of the partition walls 53, respectively. It is composed of

In the above, both the front substrate 51 and the rear substrate 52 are made of glass, and the plurality of partition walls 53 constitute a plurality of discharge cells together with the plurality of first and second storage electrode pairs 54 and 55. At the same time, it serves to prevent crosstalk between cells.

In addition, a dielectric layer 58 is formed on the plurality of first and second sustain electrode pairs 54 and 55 and the front substrate 51 to limit the discharge current of each cell. A magnesium oxide (MgO) protective film 59 is formed to protect the first and second sustain electrode pairs 54 and 55 and the dielectric layer 58 from sputtering that occurs during discharge. Gas is injected.

A process of displaying an image on one cell of the conventional AC color plasma display panel configured as described above is as follows.

First, when a specific pulse voltage is applied to the first and second sustain electrode pairs 54 and 55, a discharge occurs between the first and second sustain electrodes 54 and 55, so that the phosphor layer 57 and the dielectric layer 58 in the corresponding discharge space. Wall charges are formed on the

Thereafter, when a specific pulse voltage is applied to the first and second sustain electrode pairs 54 and 55 and the address electrode 56, an address is formed between the first and second sustain electrode pairs 54 and 55 and the address electrode 56. As a result of discharge, the discharge gas injected into the discharge space is ionized by electrons and ions and becomes a plasma state.

In addition, the particles excited by the collision in the plasma state falls to the ground state and emits ultraviolet rays toward the phosphor layer 57, and the phosphor layer 57 is excited by the collision of ultraviolet rays to emit visible light. The visible light is emitted to the outside through the front substrate 51.

Subsequently, when a specific pulse voltage is applied to the first and second sustain electrode pairs 54 and 55, sustain discharge occurs between the first and second sustain electrodes 54 and 55, and the address discharge immediately before is maintained for a predetermined time. The image is displayed.

However, the AC color plasma display panel according to the prior art is difficult to popularize because the luminance (brightness) of the entire screen is significantly lower than the CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), etc., which are widely known as image display means. there was.

The present invention has been made to solve the above problems, a protrusion having a lower height than the partition wall is formed on the rear substrate of each cell, and the address electrode and the phosphor layer are laminated on the rear substrate and the protrusion to form the address electrode. And by increasing the area of the phosphor layer by an area corresponding to the protrusion, the discharge area and the light emitting area of each cell are increased to provide an AC color plasma display panel having a high image uniformity, luminous efficiency and brightness. There is a purpose.

In addition, according to the present invention, the phosphor layer formed in the space between the protrusion of each cell and the two side partition walls is excited several times at different angles by ultraviolet rays and visible light, thereby increasing the luminous efficiency and luminance of each cell and acquiring a wide viewing angle. Another object is to provide a color plasma display panel.

1 is an exploded perspective view of an AC color plasma display panel according to the prior art;

FIG. 2 is a cross-sectional view of one cell of the AC color plasma display panel shown in FIG. 1, except that the front substrate is rotated by 90 °;

3 is a cross-sectional view of one cell of an AC color plasma display panel according to an embodiment of the present invention, in which the front substrate is rotated by 90 °.

* Description of the symbols for the main parts of the drawings *

1: front substrate 2: back substrate

3a, 3b: 1st, 2nd partition 3c: protrusion

4, 5: first and second sustain electrodes 6: address electrodes

7: phosphor layer

In order to achieve the above object, the AC color plasma display panel according to the present invention includes a front substrate and a rear substrate disposed in parallel with a predetermined distance therebetween, a plurality of partition walls formed between the front substrate and the rear substrate, and the front surface. A plurality of first and second sustain electrode pairs formed on a surface opposite to the rear substrate of the substrate, a plurality of address electrodes for inducing discharge together with the first and second sustain electrode pairs, and the first and second sustain electrode pairs In an AC color plasma display panel including a plurality of phosphor layers that emit visible light during discharge between the electrode and the address electrode, protrusions having a lower height than the barrier ribs are formed on the rear substrate between the barrier ribs. And the address electrodes are formed on the rear substrate and the protrusion between the partition walls, respectively, and the phosphor layer Is formed on a portion of the side of each partition and the address electrode, respectively.

According to an embodiment of the present invention, it is preferable that at least one protrusion is formed on the rear substrate between the barrier ribs, and the protrusion is formed using the same material as the barrier ribs.

Hereinafter, a preferred embodiment of an AC color plasma display panel according to the present invention will be described in detail with reference to the accompanying drawings.

A configuration of an AC color plasma display panel according to an exemplary embodiment of the present invention will be described with reference to a cross-sectional view of a single cell shown in FIG. 3 (however, the front substrate is rotated by 90 °).

In FIG. 3, reference numeral 1 denotes a front substrate which is a display surface of an image, 2 denotes a rear substrate positioned in parallel with a predetermined distance from the front substrate 1, and 3a and 3b denote the front substrate 1 And first and second partition walls arranged and arranged at predetermined intervals between the substrate and the rear substrate 2. Here, one protrusion 3c having a height lower than that of the first and second barrier ribs 3a and 3b is formed on the back substrate 2 between the first and second barrier ribs 3a and 3b. 3c) is formed using the same material as the partitions 3a and 3b.

Further, reference numerals 4 and 5 denote first and second storage electrode pairs formed at predetermined intervals so as to be orthogonal to the first and second partitions 3a and 3b on the opposite surface of the front substrate 1 to the rear substrate 2. 6 is formed on the back substrate 2 and the protrusion 3c between the first and second partitions 3a and 3b to induce an address discharge together with the first and second storage electrode pairs 4 and 5. And 7 is formed on a part of side surfaces of the first and second barrier ribs 3a and 3b and the address electrode 6 to form the first and second sustain electrode pairs 4 and 5 and the address electrode ( 6) shows a phosphor layer which is excited by ultraviolet light during discharge between and emits visible light.

In addition, reference numeral 8 denotes a dielectric layer formed on the first and second sustain electrode pairs 4 and 5 and the front substrate 1 to limit discharge current, and 9 denotes a dielectric layer formed on the dielectric layer 8 to generate a discharge. The magnesium oxide (MgO) protective film which protects the said 1st, 2nd storage electrode pair 4 and 5 and the dielectric layer 8 from sputtering is shown.

In addition, discharge gas is injected into the discharge space formed by the front substrate 1, the rear substrate 2, and the first and second partitions 3a and 3b.

Referring to the operation and effect of the embodiment of the present invention configured as described above in more detail.

According to an embodiment of the present invention, an area of the address electrode 6 formed between the first and second partitions 3a and 3b and an area of the phosphor layer 7 correspond to the protrusion 3c formed on the rear substrate 2. The area is wider than that of the prior art, and accordingly, the discharge area and the light emission area are also larger than the prior art.

Therefore, in one embodiment of the present invention, more wall charges may be formed on the phosphor layer 7 and the dielectric layer 8 than the prior art in the process of forming wall charges of each cell described in the prior art, so that the address discharge is performed next. The driving voltage of can be lowered.

In addition, in one embodiment of the present invention, the amount of excitation of the phosphor layer 7 due to ultraviolet rays in the address discharge process occurring between the first and second sustain electrode pairs 4 and 5 and the address electrode 6 is much higher than that of the prior art. Lose.

That is, in one embodiment of the present invention, as described above, the area of the phosphor layer 7 is increased by an area corresponding to the protrusion 3c than in the prior art, so that the amount of excitation of the phosphor layer 7 increases, of course, FIG. As shown in FIG. 3, the phosphor layer 7 formed in the space between the first and second partitions 3a and 3b and the protrusion 3c is re-excited several times at different angles by ultraviolet rays and visible light, thereby causing the phosphor layer 7 Excitation amount is increased.

As the amount of excitation of the phosphor layer 7 increases due to the above phenomenon, the luminous efficiency and luminance of each cell increases, and the phosphor layer formed in the space between the first and second partitions 3a and 3b and the protrusion 3c ( When 7) is reexcited several times at different angles, the visible light is spread out to the outside and the wide viewing angle is realized.

On the other hand, when the area of the address electrode 6 is enlarged by the protrusions 3c formed on the rear substrate 2, the discharge region is enlarged to increase the luminous efficiency and luminance, and the discharge regions are evenly distributed to uniform the image ( uniformity is improved.

In addition, according to the exemplary embodiment of the present invention, the sustain discharge process between the first and second sustain electrode pairs 4 and 5 occurs to maintain the address discharge that occurred immediately before a predetermined time, as described above. The uniformity, luminous efficiency, and luminance of an image increase with the increase of discharge and the light emitting area.

In another embodiment of the present invention, by increasing the number of protrusions formed on the back substrate between each partition wall, the area of the address electrode and the phosphor layer is increased, and at the same time, the number of spaces in which the phosphor layer can be excited several times at different angles is increased. The uniformity, luminous efficiency and luminance of the screen can be further increased by increasing the discharge and light emitting regions of each cell than one embodiment of the present invention described above.

In addition, the uniformity, luminous efficiency and luminance of the screen can be improved by increasing or increasing the height of the protrusions formed on the rear substrate between the partition walls, and the protrusions may have any shape such as a rectangle or a hemispherical shape. Do.

As described above, in the AC color plasma display panel according to the present invention, protrusions are formed on a back substrate between each partition wall, and address electrodes and phosphor layers are stacked on the protrusions, so that the area of the address electrode and the phosphor layers corresponds to the area corresponding to the protrusions. This increases the discharge and emission area of each cell, thereby increasing the uniformity, luminous efficiency, and luminance of the image. Since it can be re-excited several times, the light emitting efficiency and luminance increase of each cell are increased, and the wide viewing angle is realized.

Claims (3)

Holding the front substrate and the rear substrate in parallel with a predetermined distance therebetween, a plurality of partition walls formed between the front substrate and the rear substrate, and a plurality of first and second retainers formed on the opposite surface of the front substrate among the front substrates; A plurality of address electrodes which induce a discharge together with an electrode pair, the first and second sustain electrode pairs, and a plurality of emit light that emits visible light during discharge between the first and second sustain electrode pairs and the address electrode In an AC color plasma display panel provided with a phosphor layer, protrusions having a lower height than the barrier ribs are formed on the rear substrates between the barrier ribs, and the address electrodes are respectively formed on the rear substrate and the protrusions between the barrier ribs. And the phosphor layers are formed on portions of side surfaces of the partition walls and the address electrodes, respectively. AC color plasma display panel. The method of claim 1, And at least one protrusion is formed on the rear substrate between the partition walls. The method according to claim 1 or 2, And the protrusion is formed using the same material as the partition wall.