KR100496284B1 - Plasma display panel - Google Patents

Abstract

According to the present invention, a first substrate, an address electrode formed on an upper surface of the first substrate, a first dielectric layer formed on an upper surface of the first substrate to fill an address electrode, and a discharge space provided on the first dielectric layer are partitioned. The barrier rib, the red, blue and green phosphor layers applied to the discharge space partitioned by the barrier rib, the second substrate being combined with the first substrate to form a discharge space, and formed on an inner surface of the second substrate. And a black matrix layer having a plurality of pairs of sustain electrodes formed of a set of first and second electrodes having a predetermined angle with the address electrode, and curved portions formed between the sustain electrodes and curved with corresponding discharge regions. And a second dielectric layer formed on the second substrate to fill the black matrix layer and the sustain electrodes.

Description

Plasma display panel {Plasma display panel}

The present invention relates to a plasma display device, and more particularly, to a plasma display device having an improved black matrix pattern formed on a front plate.

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 panel and an alternating current plasma display panel 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 surface discharge plasma display device among such discharge plasma display devices.

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. As shown in FIG. 2, the front plate 17 has black matrices 18 formed between the pair of sustain electrodes 15 and 16 and the sustain electrodes 15 and 16 and the matrix 18. The dielectric layer 19 and the protective film 21 are laminated on the front plate provided with the top surface.

In addition, red, green, and blue phosphor layers (R) (G) (B) are formed in the discharge spaces partitioned by the partitions 13, and Ne, Xe, etc. are mixed in the discharge spaces partitioned by the partitions. Discharge gas is injected.

The driving of the plasma display panel having such a configuration is largely divided into driving for address discharge and driving for sustain discharge. An address discharge occurs between the address electrode 12 and one sustain electrode 15, at which time wall charges are formed. The sustain discharge is caused by the potential difference between the sustain electrodes 15 and 16 located in the discharge space in which the wall charges are formed. This sustain discharge is a discharge for displaying an actual image and becomes a discharging state. In other words, the selected phosphor layers (R) (G) (B) are excited to the mother beam generated by the selective sustain discharge to form an image.

However, in such a plasma display device, the black matrix layer 18 formed between the sustain electrodes 15 and 16 erodes a part of the sustain electrodes 15 and 16 as shown in FIG. 2. The aperture ratio of is lowered, so that the amount of light passing through the front plate becomes smaller. Such a reduction in the amount of light has a problem of lowering the luminance of an image formed by the plasma display device, and in particular, the pixels are made smaller by the black matrix layer 18, which makes it difficult to display high-definition images.

SUMMARY OF THE INVENTION An object of the present invention is to provide a plasma display device capable of realizing an image having high luminance by increasing an aperture ratio.

In order to achieve the above object, the plasma display device of the present invention,

A first substrate, an address electrode formed on an upper surface of the first substrate, a first dielectric layer formed on an upper surface of the first substrate to fill an address electrode, a partition wall provided on the first dielectric layer and partitioning a discharge space; Red, blue, and green phosphor layers applied to the discharge space partitioned by the partition wall, the second substrate is formed on the inner surface of the second substrate and the transparent second substrate to form a discharge space combined with the first substrate, the address electrode A black matrix layer having a plurality of pairs of sustain electrodes formed of a set of first and second electrodes having a predetermined angle with the curved portion, curved portions formed between the sustain electrodes and curved to correspond to discharge regions; And a second dielectric layer formed on the second substrate to fill the black matrix layer and the sustain electrodes.

In the present invention, the curved portion of the black matrix layer is preferably formed to have a curved surface having a predetermined curvature or to have a polygonal surface. The shape of the pixel partitioned by the curved portion and the partition wall of the black matrix layer is preferable to form a polygon. More preferably, it is formed in a honeycomb shape or an octagonal shape.

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

3 shows 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 first substrate 31, address electrodes 32 formed in a predetermined pattern on an upper surface of the first substrate 31, and the first substrate. And a first dielectric layer 33 formed on the 31 to fill the address electrode 32. The address electrodes 32 have a predetermined width and are formed in parallel stripes. The first dielectric layer 33 having the address electrodes 32 embedded therein is formed with a partition 34 that partitions 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 first substrate 31 is coupled to the transparent second substrate 41 to seal the space. A transparent conductive material is formed on the inner surface of the second substrate 41 in a direction orthogonal to the address electrodes 32. A plurality of sustain electrodes 42 formed of a pair of first and second electrodes 42a and 42b are formed. Bus electrodes 42c and 42d are formed along the first and second electrodes in the first and second electrodes 42a and 42a to reduce line resistance. The bus electrodes 42c and 42d are made of metal such as silver, silver alloy, aluminum, and the like, and are formed to have a width narrower than that of the first and second electrodes 42a and 42b.

The black matrix layer 43 is formed in parallel with the sustain electrodes between the sustain electrodes 42. As shown in FIG. 3, the black matrix layer 43 has curved portions 43a formed by inserting portions corresponding to respective regions in which discharge occurs as shown in FIG. 3. The lead trajectory of the curved portion 43a has a predetermined curvature. In this case, the curved portion 43a may be formed such that the lead trajectory has a polygonal surface as shown in FIGS. 4 and 5. Preferably, an exposed region of the discharge region, such as the partition wall 34, is honey. It is to form a comb or polygon.

As described above, the second dielectric layer 44 having the sustain electrodes 42 and the black matrix layer 43 embedded in the upper surface of the second substrate 41 on which the sustain electrodes 42 and the black matrix layer 43 are formed. Is formed.

Referring to the operation of the plasma display device according to the present invention configured as described above are as follows.

First, when a predetermined pulse voltage is applied to one of the first and second electrodes 42a and 42b constituting the address electrode 32 and the sustain electrode 42, an address discharge occurs between them to cause wall charges on the inner surface of the discharge space. Is formed. The wall charge generated at this time is charged on the surface of the dielectric layer between the first and second electrodes 42a and 42b.

In this state, when a voltage is applied to the first and second electrodes 42a and 42b constituting the sustaining electrode, sustaining discharge occurs between them to generate a mother beam. The discharge start voltage for the sustain discharge can be lowered by the charges charged between the partition walls.

The mother beam generated by the selected sustain discharge is excited by the phosphor layer applied to the discharge space to emit light. In this process, the light generated from the phosphor layer passes through the second substrate 41. At this time, since the curved portion 43a is formed in the black matrix layer 43, the aperture ratio is increased and the luminance of the pixel is high. In particular, the curved portion can obtain the effect of widening the corner portion of the light emitting region where the address electrode 32 and the sustain electrode 42 intersect, thereby enabling high definition image.

As described above, the plasma display device according to the present invention can increase the aperture ratio of the phosphor layer region by forming curved portions in the black matrix layer formed on the second substrate.

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

1 is an exploded perspective view of a partial ablation of a conventional plasma display device;

2 is a partially cutaway perspective view illustrating a front plate of a conventional plasma display device;

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

Figure 4 is an isolation showing another embodiment of the plasma display device according to the present invention

Perspective view

5 is a plan view of a plasma display.

Claims (4)

A first substrate, an address electrode formed on an upper surface of the first substrate, a first dielectric layer formed on an upper surface of the first substrate to fill an address electrode, a partition wall provided on the first dielectric layer and partitioning a discharge space; Red, blue, and green phosphor layers applied to the discharge space partitioned by the partition wall, the second substrate is formed on the inner surface of the second substrate and the transparent second substrate to form a discharge space combined with the first substrate, the address electrode A black matrix layer having a plurality of pairs of sustain electrodes formed of a set of first and second electrodes having a predetermined angle with the curved portion, curved portions formed between the sustain electrodes and curved to correspond to discharge regions; And a second dielectric layer formed on the second substrate to fill the black matrix layer and the sustain electrodes. The method of claim 1, And wherein the curved portion of the black matrix layer is formed of a curved surface whose lead trajectory has a predetermined curvature. The method of claim 1, And wherein the curved portion of the black matrix layer has a drawing path of multiple surfaces. The method of claim 1, And a curved portion of the black matrix layer and a shape of the pixel partitioned by the partition wall form a polygon.