KR100366095B1 - Plasma display panel - Google Patents

Abstract

According to the present invention, a plasma display device includes a black matrix layer including a transparent front plate, a plurality of pairs of sustain electrodes spaced at predetermined intervals from an inner surface of the front plate, and a pair of getters and including a getter. And a partition wall coupled with the front plate to define a discharge space and having a phosphor layer having a predetermined pattern.

Description

Plasma display panel {Plasma display panel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panle and, more particularly, to a plasma display device having an improved black matrix layer.

Plasma display devices are regarded as flat panel display panels that exhibit excellent display performance, such as display capacitance, brightness, contrast, and viewing angle, and are close to the performance of cathode ray tubes.

The plasma display device may be classified into a direct current plasma display device and an alternating current plasma display device according to its operation principle, and may be classified into a counter discharge type and a surface discharge type according to the configuration of the electrodes.

1 shows an example of a three-electrode surface discharge plasma display device of such a discharge type plasma display device.

As shown, the plasma display device 10 includes a substrate 11, an address electrode 12 formed on the substrate 11, a dielectric layer 13 formed on the substrate 11 on which the address electrode 12 is formed, And a partition wall 14 formed on the dielectric layer 13 to maintain a discharge distance and to prevent electro-optical crosstalk between cells, and a substrate 11 on which the partition wall 14 is formed, and the address electrode 12. The plurality of pairs of sustain electrodes 15 and 16 are provided with a front plate 17 formed on a lower surface thereof so as to be orthogonal thereto.

In addition, a black matrix layer 18 is formed between the sustain electrodes 15 and 16. The black matrix layer 18 is formed in a simple stripe shape and is perpendicular to the partition wall to prevent reflection of external light and to emit no light. Prevent crosstalk in the area. The dielectric layer 19 and the passivation layer 21 are stacked on the front plate 17 on which the sustain electrodes 15 and 16 and the matrix 18 are provided. Red, green, and blue phosphor layers R (G) and (B) are formed in the discharge spaces partitioned by the partition wall 13. The edges of the substrate 11 and the front plate 17 are actually bonded to form a discharge space sealed to the outside.

In the plasma display device configured as described above, since the discharge space in which the substrate 11 and the front plate 17 are sealed is filled with impurity gas, it is appropriate to exhaust such air and improve the efficiency of discharge and color purity of the fluorescent film excited. Air is replaced by the discharge gas of. In this exhaust process, impurity gas in the discharge space is forced through the exhaust hole formed in the substrate.

However, since the discharge space inside the display device forms an area of tens to hundreds of micrometers (µm) in width, that is, a narrow area substantially close to the capillary tube, it takes considerable time to achieve sufficient vacuum degree. This delay in exhaust time greatly affects the manufacturing process of the continuous display device.

In addition, when the discharge gas is injected in a state where the air in the discharge space is not sufficiently exhausted, a large amount of gas such as moisture, oxygen, or hydrogen is present to increase the voltage required at the start of discharge at the start of discharge and to discharge the discharge gas. You can't get enough UV rays. This reduces the number of ultraviolet rays that reach the phosphors, so that the luminance is lowered, the efficiency is lowered, and the lighting itself may be impossible to turn on.

In addition, since the phosphor layer, the partition 14 and the protective film 21 exposed to the discharge space are made of a material that adsorbs or combines a large amount of gas, the discharge gas in the panel is encapsulated to produce a lit discharge. Initiation will release large amounts of gas and other foreign matter from its inner walls. Therefore, the inside of the display device is contaminated again, and the impurity gas results in a decrease in the characteristics of the display device, that is, brightness or efficiency, and a shortened lifetime.

In order to overcome the incomplete exhaust process as described above, multiple stages of exhaust or getters are injected through the exhaust pipe and activated to adsorb the pure water gas, but the getters are not sufficiently diffused into the discharge space between the partition walls. I couldn't expect it.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a plasma display device capable of quickly and easily removing a water net gas in a discharge space to increase a gas purity supplied in the discharge space.

1 is a perspective view of a conventional plasma display device;

2 is a view showing another example of a black matrix layer formed in a conventional plasma display device;

3 is a perspective view of a plasma display device according to the present invention;

4 is an enlarged perspective view illustrating a front plate on which a black matrix layer is formed;

In order to achieve the above object, a plasma display device of the present invention is formed between a transparent front plate, a plurality of pairs of sustain electrodes spaced at predetermined intervals from an inner surface of the front plate, and a getter formed between the pair of sustain electrodes. It characterized in that it comprises a black matrix layer included, and a substrate is formed in combination with the front plate to partition the discharge space and the phosphor layer of a predetermined pattern is provided.

In the present invention, the getter formed on the black matrix layer is selected from the group consisting of tungsten (W), titanium (Ti), zirconium (Zi), vananium (V), iron (Fe), aluminum (Al) and alloys thereof. It is preferable to use an oxide containing any one selected as a component.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 and 4 illustrate an embodiment of a plasma display device according to the present invention.

As shown, the plasma display device 30 according to the present invention includes a substrate 31, address electrodes 32 formed in a predetermined pattern on the upper surface of the substrate 31, and formed on the substrate 31. As shown in FIG. And a first dielectric layer 33 filling the address electrode 32. The address electrodes 32 have a predetermined width and are formed in parallel stripes. A partition wall 34 is formed on the first dielectric layer 33 between the address electrodes 32 to partition the discharge space in a direction parallel to the address electrode 32. Red, blue, and green phosphor layers R (G) and (B) are formed in the region between the partition walls 34.

The substrate 31 is coupled to the transparent front plate 41 to seal the space. The surface of the front plate 41 has a predetermined width in a direction orthogonal to the address electrodes 32 and includes a getter. Formed black matrix layer 42 is formed. Here, the space between the black matrix layers 42 should be able to secure a space in which the sustain electrode to be described later can be formed. The getter included in the black matrix layer 42 is selected from the group consisting of tungsten (W), titanium (Ti), zirconium (Zi), vananium (V), iron (Fe), aluminum (Al), and alloys thereof. It consists of oxide which has any one as a component.

On the surface of the front plate 41 between the black matrix layers 42 formed as described above, sustain electrodes 43 and 44 are formed. Each of the sustain electrodes 43 and 44 is a pair of transmissive electrodes 43a and 44a which are formed between the black matrix layers 42 and the edges of the transparent electrodes 43b and 44b in the longitudinal direction. Bus electrodes 43b and 44b which are formed as follows.

As described above, a second dielectric layer 45 and a protective film (made of MgO) in which the sustain electrodes 42 are embedded are sequentially formed on the front substrate on which the black matrix layer 42 and the sustain electrodes 43 and 44 are formed. . The front plate and the substrate have their edges sealed by the material to seal the discharge space.

Plasma display device according to the present invention configured as described above is made to be sealed exhaust and discharge gas injection, the exhaust gas is maintained at an appropriate temperature of 300 ℃ or more, the display device using a vacuum exhaust device Sealed while exhausting impurity gas from the interior of the chamber. Of course, the exhaust may be made in a state where the sealing is completely made.

When sealing and exhausting are completed, hydrogen (H 2) gas or a mixture of hydrogen (H 2) is injected into the plasma display device 30. Injecting hydrogen gas or hydrogen mixed gas is to activate a getter material such as tungsten oxide (W03) mixed in the black matrix layer 42, using hydrogen (H2) or gas containing hydrogen in exhaust gas. This is to facilitate the gettering action by reducing the getter material.

After the hydrogen gas or the like reaches a predetermined pressure, the inside of the display device is exhausted again. Injection and exhaust of hydrogen gas can be repeated several times as needed, and it is preferable to carry out 2 or more times.

In the plasma display device according to the present invention, a large amount of impurity gas emitted from a phosphor discharge layer or a protective layer layer is doubled by lighting and discharging the impurity gas such as moisture or carbon or nitrogen in the exhaust process after sealing the panel. Can be removed. Therefore, it is possible to maintain a sufficient degree of vacuum to produce a high quality panel, improve its brightness, prolong the service life of the product, and improve its productivity.

The invention has been described with reference to the embodiments shown in the drawings. This is merely exemplary, and those skilled in the art will understand that various modifications and embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (2)

A transparent front plate, a plurality of pairs of sustain electrodes spaced at predetermined intervals from an inner surface of the front plate, a black matrix layer formed between the pair of sustain electrodes and including a getter, and the black matrix layer And a substrate having a dielectric layer filling the sustain electrodes and a partition wall formed to be coupled to the front plate to partition a discharge space, and having a phosphor layer having a predetermined pattern formed in the divided discharge space. The method of claim 1, The getter is an oxide having any one selected from the group consisting of tungsten (W), titanium (Ti), zirconium (Zi), vananium (V), iron (Fe), aluminum (Al) and alloys thereof. Plasma display device characterized in that.