JP2003323848A - Plasma display panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plasma display panel which can reduce power consumption without largely decreasing the light emission brightness. <P>SOLUTION: This is made the plasma display panel with a constitution having a protrusion 16 installed at a position opposed to a scanning electrode 6 between a plurality of insulation walls 12 to partition a discharging space. By this, the plasma display panel is provided which can reduce the power consumption without largely decreasing the light emission brightness. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a large screen, thin type,
The present invention relates to a plasma display panel known as a lightweight display device.

[0002]

2. Description of the Related Art In a conventional plasma display panel, an image is displayed by generating ultraviolet rays by gas discharge and exciting the phosphors with the ultraviolet rays to emit light.

Plasma display panels are roughly classified into AC type and DC type in terms of driving, and surface discharge type and counter discharge type in discharge type. However, high definition, large screen and structure are used. Currently, surface discharge type plasma display panels having a three-electrode structure are predominant because of the simplicity of manufacturing that accompanies simplicity.

A general structure of this plasma display panel is shown in FIG. FIG. 3 is a sectional perspective view showing a schematic configuration of the plasma display panel. Further, FIG. 4 shows a sectional view taken along the line XX in FIG.

The front plate 1 has a structure in which a plurality of display electrodes 5 covered with a dielectric layer 3 and a protective film 4 of a MgO vapor deposition film are provided on a transparent and insulating substrate 2 such as glass. ing. The display electrode 5 is a pair of a scan electrode 6 and a sustain electrode 7. The scan electrode 6 is composed of a transparent electrode 6a and a bus electrode 6b formed thereon, which is made of a metal material such as Ag. , Sustain electrode 7 is transparent electrode 7
a and a bus electrode 7b formed thereon, which is made of a metal material such as Ag.

The rear plate 8 is provided with a plurality of data electrodes 11 covered with an insulating layer 10 on an insulating substrate 9 such as glass, and the data electrodes 1 on the insulating layer 10 are attached.
Stripe-shaped partition walls 12 are provided at positions corresponding to positions 1 in parallel with the data electrodes 11, and a phosphor layer 13 is provided between the surface of the insulating layer 10 and the side surfaces of the partition walls 12. There is. And the front plate 1 and the rear plate 8 are
The scan electrodes 6 and the sustain electrodes 7 and the data electrodes 11 are arranged to face each other across the discharge space 14 so as to be orthogonal to each other. The discharge space 14 contains at least one of helium, neon, argon, and xenon as a discharge gas.
A rare gas of a kind is enclosed, and the discharge space 14 at the intersection of the data electrode 11 and the scan electrode 6 and the sustain electrode 7 which is partitioned by the partition wall 12 operates as a discharge cell 15.

Next, a method of driving the plasma display panel having the above-mentioned structure will be described. FIG. 5 is a block diagram showing a schematic configuration of a panel drive circuit for driving the plasma display panel and a connection state with each electrode of the plasma display panel. Panel drive circuit 102 for driving plasma display panel 101
Are scan electrode driver 102a and sustain electrode driver 10
2b and the data electrode driver 102c. Then, when the plasma display panel 101 is driven, an address voltage is applied between the scan electrode 6 and the data electrode 11 of the discharge cell 15 to be turned on to perform address discharge, and then the scan electrode 6 and the sustain electrode 7 are connected. A pulse voltage is applied between them to perform sustain discharge. Then, ultraviolet rays are emitted along with the discharge in the discharge cells 15, the ultraviolet rays are converted into visible light by the phosphor layer 13, and the discharge cells 15 are turned on.

[0008]

In recent years, there has been an increasing demand for the plasma display panel to reduce the power consumption during driving, and as a structure corresponding to this, the display electrode 5 and the data electrode 11 are required. There is a configuration in which the space between and is narrowed.

As a result, the applied voltage at the time of address discharge can be lowered, so that the power consumption at the time of driving can be reduced, but the interval between the display electrode 5 and the data electrode 11 can be narrowed. Since the volume of the discharge space is reduced, a new problem arises that the emission brightness during discharge emission decreases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to realize a plasma display panel capable of reducing power consumption without significantly reducing light emission luminance.

[0011]

To achieve the above object, a plasma display panel according to the present invention includes a front plate having a plurality of display electrodes each including a scan electrode and a sustain electrode, and a data electrode on the display electrode. A plasma display panel having a plurality of rear plates formed so as to be orthogonal to each other, and a plurality of discharge cells are formed at intersections of display electrodes and data electrodes by arranging the front plate and the rear plate to face each other. Therefore, in the discharge cell, a protrusion is provided on the back plate at a position facing the scanning electrode.

According to the above, it is possible to realize a plasma display panel capable of reducing the power consumption without significantly reducing the emission brightness.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a plasma display panel according to an embodiment of the present invention will be described with reference to the drawings, but the embodiment of the present invention is not limited thereto. Further, the configuration of the plasma display panel according to the present embodiment is the same as that shown in FIG. 3, and therefore detailed description thereof will be omitted, and in the following description, characteristic parts of the present embodiment will be described. I will describe. The same components as those in FIG. 3 are designated by the same reference numerals.

(First Embodiment) FIG. 1 is a sectional view showing a schematic structure of a discharge cell portion of a plasma display panel according to a first embodiment. A characteristic of the plasma display panel according to the present embodiment is that the back plate 8 is
That is, the protrusion 16 is provided between the partition walls 12 and at a position facing the scanning electrode 6. According to this structure, due to the presence of the protrusions 16, the gap between the front plate 1 and the rear plate 8 is narrowed at that portion, and the applied voltage for the address discharge can be lowered. Further, since the time for forming the address discharge is proportional to the distance between the front plate 1 and the rear plate 8, the time for forming the address discharge can be shortened. Therefore, the applied voltage and applied time during address discharge are smaller than in the conventional case,
It is possible to reduce power consumption during driving. on the other hand,
The volume of the discharge space 14 of the discharge cell 15 has not decreased significantly, and therefore the emission brightness during discharge emission does not decrease significantly.

As described above, according to the plasma display panel of the present embodiment, it is possible to realize the plasma display panel capable of reducing the power consumption without significantly reducing the emission brightness.

Here, the formation position of the projection 16 may be a position facing the scanning electrode 6, but from the viewpoint that light emission discharge in the discharge cell 15 is not adversely affected by light shielding or the like. It is preferable that the transparent electrodes 6a of the scanning electrodes 6 are opposed to the bus electrodes 6b provided outside the discharge cells 15 from the same viewpoint.

(Second Embodiment) Next, a plasma display panel according to another embodiment of the present invention will be described.

FIG. 2 is a sectional view showing a schematic structure of discharge cell 15 of the plasma display panel according to the second embodiment. A characteristic of the plasma display panel according to the present embodiment is that the back plate 8 is provided between the data electrodes 11 substantially in parallel and partitions the discharge space 14.
This is to have a plurality of protrusions 16 at positions facing the scan electrodes 6 and the sustain electrodes 7 between the two.

According to the present embodiment, the same effect as that of the first embodiment shown in FIG. 1 can be obtained, and since the projection 16 is provided at the position facing the sustain electrode 7,
Since the discharge cells 15 are physically surrounded, it is possible to obtain the effect of suppressing discharge interference such as crosstalk between adjacent discharge cells 15 and erroneous discharge. .

Also in this embodiment, as in the case of the first embodiment, the position where the protrusion 16 is formed is in the discharge cell 1.
It is preferable that the scan electrodes 6 and the sustain electrodes 7 oppose each other outside the discharge cells 15 as much as possible from the viewpoint of not adversely affecting the light-emission discharge at 5, such as light shielding. Therefore, the scan electrodes 6 and the sustain electrodes 7 oppose the bus electrodes 6b and 7b. It is preferable to provide it at the position.

In Embodiment 1 and Embodiment 2 described above, regarding the formation of the phosphor layer 13, if the phosphor layer 13 is formed between the partition walls 12 and so as to cover the protrusions 16, the phosphor layer is also formed on the wall surfaces of the protrusions 16. Since 13 is formed, the phosphor layer 13 in that portion can be used for discharge light emission and brightness is improved, but this is not particularly limited, and the phosphor layer 13 is formed avoiding the protrusions 16. However, the effect of the present invention can be obtained similarly.

It is preferable that the projection 16 is made of the same material and process as the partition wall 12 so that the process can be simplified. However, the projection 16 is not limited to this and is formed of a dielectric material. If so, the effect of the present invention can be obtained similarly.

[0023]

As described above, according to the present invention,
It is possible to realize a plasma display panel capable of reducing power consumption without significantly reducing the emission brightness.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a discharge cell portion of a plasma display panel according to an embodiment of the present invention.

FIG. 2 is a sectional view showing a schematic configuration of a discharge cell portion of a plasma display panel according to another embodiment of the present invention.

FIG. 3 is a sectional perspective view showing a schematic configuration of a general plasma display panel.

FIG. 4 is a sectional view taken along the line XX in FIG.

FIG. 5 is a block diagram showing a connection state between a general plasma display panel and a drive circuit.

[Explanation of symbols] 1 Front plate 5 display electrodes 6 scanning electrodes 7 Sustain electrodes 8 Back plate 11 Data electrode 12 partitions 14 discharge space 16 protrusions

Continued front page    (72) Inventor Hiroyuki Tachibana             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5C040 FA01 FA04 GB03 GB14 GF03                       GF12 GG03 GG05 LA02 MA12                       MA20

Claims (4)

[Claims] 1. A front plate having a plurality of display electrodes formed of scan electrodes and sustain electrodes, and a back plate having a plurality of data electrodes formed so as to be orthogonal to the display electrodes. A plasma display panel in which a plurality of discharge cells are formed at intersections of display electrodes and data electrodes by arranging a back plate so as to face each other, and a protrusion is formed at a position in the discharge cell facing the scanning electrodes on the back plate. The plasma display panel provided. 2. The plasma display panel according to claim 1, wherein the protrusion is provided at a position facing the scan electrode and the sustain electrode on the back plate. 3. The plasma display panel according to claim 1, wherein the scan electrode and the sustain electrode are composed of a transparent electrode and a bus electrode formed thereon, and the protrusion is provided at a position facing the bus electrode. 4. The plasma display panel according to claim 1, wherein a phosphor layer is formed so as to cover the protrusions.