KR100229074B1 - AC color plasma display panel - Google Patents

Abstract

According to the present invention, grooves are formed in the rear substrates between the partition walls, and address electrodes are formed on the rear substrate and the grooves between the partition walls, respectively, and a phosphor layer is formed on the side portions of the partition walls and the address electrodes, respectively. And an AC color plasma display panel having an increased light emitting area, wherein grooves are formed in a back substrate between each partition wall, and an address electrode and a phosphor layer are formed on the grooves so that the address electrodes and the phosphors correspond to the area corresponding to the grooves. As the area of the layer becomes wider, the discharge and light emitting regions of each cell are increased, thereby increasing the uniformity, luminous efficiency, and luminance of the image, and the phosphor layer formed on the groove is re-multiplied at different angles by ultraviolet rays and visible light. Excitation can increase the luminous efficiency and luminance of each cell, while at the same time This has the effect to be achieved.

Description

AC color plasma display panel

The present invention relates to an AC color plasma display panel, and in particular, grooves are formed on the rear substrates between the partition walls, and address electrodes are formed on the rear substrate and the grooves between the partition walls, respectively. The present invention relates to an AC color plasma display panel in which discharge and light emitting regions are increased by forming phosphor layers on 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 is largely divided into an AC (Alternating Current) type and a DC (Direct Current) type, that is, an AC color plasma display panel driven by a sinusoidal AC voltage or a pulse voltage and a DC voltage according to the driving 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, the groove is formed on the back substrate of each cell, the address electrode and the phosphor layer is formed on the back substrate with the groove formed to form the area of the address electrode and the phosphor layer It is an object of the present invention to provide an AC color plasma display panel in which the discharge area and the light emitting area of each cell are increased by being wider by the area corresponding to the grooves, whereby the image uniformity, luminous efficiency and brightness are greatly increased.

In addition, the present invention provides an AC color plasma display panel in which the phosphor layer formed on the groove of each cell is excited several times at different angles by ultraviolet rays and visible light to increase the luminous efficiency and luminance of each cell and to secure a wide viewing angle. There is another purpose.

1 is an exploded perspective view of one of the 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 to 9 are cross-sectional views of one cell of the AC color plasma display panel according to the preferred embodiment of the present invention, except that the front substrate is rotated by 90 degrees.

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

1: front substrate 2: back substrate

3a and 3b: first and second partitions 4 and 5: first and second sustain electrodes

6: address electrode 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 having a plurality of phosphor layers excited by ultraviolet rays to emit visible light upon discharge between the and the address electrodes, grooves are formed in the rear substrates between the partition walls, respectively. The address electrode is formed on the rear substrate and the groove between each partition wall, and the phosphor layer is formed on each of the partition walls. Surface is characterized in that formed on each part and the address electrode.

According to an embodiment of the present invention, at least one groove is formed on at least one rear substrate between the partition walls, and each groove is preferably formed in a rectangular shape, a U shape or a V shape.

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

Referring to the configuration of the AC color plasma display panel according to an embodiment of the present invention with reference to a cross-sectional view of the one cell shown in Figure 3 (but the front substrate is rotated 90 °) as follows.

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 square groove is formed in the back substrate 2 between the first and second 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 between the first and second partitions 3a and 3b and the groove of the rectangular shape to induce an address discharge together with the first and second sustain 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 square grooves formed in the back 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 a square groove than the prior art, so that the amount of excitation of the phosphor layer 7 increases. As shown in Fig. 3, the phosphor layer 7 formed inside the rectangular groove is re-excited several times at different angles by ultraviolet rays and visible light, thereby increasing the amount of excitation of the phosphor layer 7.

When the amount of excitation of the phosphor layer 7 increases according to the above phenomenon, the luminous efficiency and luminance of each cell increases, and when the phosphor layer 7 formed inside the rectangular groove is re-excited several times at different angles, the visible light eventually becomes visible. The wide viewing angle is realized by spreading out to the outside.

On the other hand, when the area of the address electrode 6 is enlarged by the square groove formed in the rear substrate 2, the discharge area is enlarged, the luminous efficiency and luminance are increased, and the discharge areas 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.

4 to 9 are cross-sectional views of one cell of the panel according to another embodiment of the present invention, in which the operation and effect are similar to those of the present invention configured as described above, except that the front substrate is rotated by 90 °. Is shown.

More specifically, another embodiment of the present invention is a groove formed in the back substrate 2 between the first and second partitions 3a and 3b is V-shaped as shown in FIG. It is U-shaped as shown.

Even if the grooves of the rectangular shape, the V shape, the U shape, as well as various other shapes are formed on the rear substrate 2, similar operations and effects can be obtained.

Another embodiment of the present invention is to change the number of grooves formed in the rear substrate 2, the rear substrate 2 between the first and second partitions (3a, 3b) as shown in Figs. Two grooves (where the shape of the grooves may be any shape as described above) may be formed, and although not shown in the drawings, a larger number of grooves may be formed in some cases.

As the number of grooves formed in the rear substrate 2 between the first and second partitions 3a and 3b increases, the area of the address electrode 6 and the phosphor layer 7 becomes wider, and accordingly, each cell The discharge and the light emission area of the light source are increased, so that the uniformity, light emission efficiency, and luminance of the image increase in proportion to the number of the grooves.

In addition, the grooves are realized to increase the uniformity, luminous efficiency and luminance of the image described above regardless of the formation position on the back substrate 2. That is, the groove is located at the center of the back substrate 2 as shown in FIGS. 3 to 5, at the left side of the back substrate 2 as shown in FIG. 8, or as shown in FIG. 9. Similarly, even if located on the right side of the back substrate 2, similar actions and effects can be obtained.

As described above, in the AC color plasma display panel according to the present invention, grooves are formed in a back substrate between each partition wall, and an address electrode and a phosphor layer are formed on the grooves so that the area of the address electrode and the phosphor layer corresponds to the area corresponding to the grooves. Because of this widening, the discharge and light emitting regions of each cell are increased, thereby increasing the uniformity, luminous efficiency and luminance of the image, and the phosphor layer formed on the grooves can be re-excited several times at different angles by ultraviolet rays and visible light. Therefore, the luminous efficiency and luminance increase of each cell are increased, and the wide viewing angle is realized.

Claims (5)

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 for inducing discharge together with the electrode pair, the first and second sustain electrode pairs, and visible light excited by ultraviolet rays at the time of discharge between the first and second sustain electrode pairs and the address electrode In the AC color plasma display panel having a plurality of phosphor layers emitting light, grooves are formed in the rear substrates between the barrier ribs, and the address electrodes are respectively formed on the rear substrate and the grooves between the barrier ribs. The phosphor layer is formed on a portion of the side of each partition and the address electrode, respectively, AC color plasma de Play panel. The method of claim 1, And at least one groove is formed on a back substrate between the partition walls. The method according to claim 1 or 2, And the groove has a rectangular shape. The method according to claim 1 or 2, And the groove is U-shaped. The method according to claim 1 or 2, And the groove is V-shaped.