KR20050114057A - Plasma display panel - Google Patents

Abstract

An object of the present invention is to provide a plasma display panel in which noise generated during operation is reduced, and in order to achieve this object, in a plasma display panel in which a front panel and a rear panel are bonded and sealed by a first sealing material, The first sealing member is disposed along a boundary of an area where the front panel and the rear panel overlap, and a width thereof is 1 mm to 3 mm.

Description

Plasma display panel {Plasma display panel}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP) used in a plasma display device, and more particularly, to a plasma display panel in which noise generated during operation is reduced.

FIG. 1 is a schematic view of a plasma display panel used in a plasma display device, and FIG. 2 is a partially cutaway perspective view of part A of FIG. 1.

As shown in FIGS. 1 and 2, the plasma display panel 1 is made by sealing the front panel 5 and the rear panel 6 by a sealing material 100 and injecting a discharge gas therein.

In the plasma display panel 1, discharge electrodes (not shown) may be disposed on the front panel 5 and the rear panel 6, respectively, and an internal discharge gas is excited by applying a voltage to the discharge electrodes. To emit ultraviolet light, and the ultraviolet light is converted into visible light in the phosphor layer formed in the rear panel to perform a display function.

The plasma display panel generates noise during operation, and it is known through experiments that the noise is affected by the configuration of the sealant 100 sealingly bonding the front panel 5 and the rear panel 6 to each other. . Therefore, the necessity of developing a plasma display panel with reduced noise by identifying the structural factors of the sealing material affecting the noise generation and reflecting the same in the design of the sealing material has emerged.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a plasma display panel with reduced noise during operation.

In order to achieve the above object, in a plasma display panel in which a front panel and a rear panel are bonded and sealed by a first sealing material, the first sealing material is disposed along a boundary of an area where the front panel and the rear panel overlap. The width of the plasma display panel is 1 mm to 3 mm.

Here, it is preferable to further provide the 2nd sealing material which joins the said front panel and a back panel.

Here, it is preferable that the second sealing member is continuously formed along the boundary of the overlapping region or intermittently formed along the boundary of the overlapping region.

Here, the second sealing member is preferably formed on two surfaces facing each other among the four surfaces defining the overlapping region.

In addition, it is preferable here that the first and second seals are formed of one or more frits.

Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings. For the same member as the member described in the prior art, the same member number is used in describing the embodiment of the present invention below.

3 is a partially cutaway perspective view of the plasma display panel according to the first embodiment of the present invention.

As shown in FIG. 3, the plasma display panel according to the present invention includes a front panel 5, a rear panel 6, and a first sealing material 200.

The front panel 5 includes a front substrate 60, a sustain discharge electrode pair 84 disposed on the bottom surface 61 of the front substrate, an upper dielectric layer 80 covering the sustain discharge electrode pair 84, and the upper side. The passivation layer 90 may be provided to cover the dielectric layer 80. The sustain discharge electrode pair 84 may be composed of an X electrode 81 and a Y electrode 82 each including the transparent electrodes 81b and 82b and the bus electrodes 81a and 82a.

The rear panel 6 includes a rear substrate 10, an address electrode 20 disposed on the rear substrate 10, a lower dielectric layer 30 covering the address electrode 20, and a lower dielectric layer 30. And a phosphor layer 50 formed in a discharge cell made of the partition wall 40 and the lower dielectric layer 30.

The first seal member 200 is disposed along a boundary B (see FIG. 1) of a portion AD (see FIG. 1) where the front panel 5 and the rear panel 6 overlap with each other, so that the front panel 5 is disposed. (5) and the rear panel 6 is to be bonded sealing. At this time, the width W2 of the first sealing material 200 is preferably 1mm to 3mm. According to the results known through the experiment, when the width of the first sealing material 200 is in the range of 1mm to 3mm, the noise generated during the operation of the plasma display panel is maintained to less than 30db. Therefore, it is preferable that the width W2 of the said 1st sealing material 200 is 1 mm-3 mm smaller than 5 mm which is the width W1 (refer FIG. 2) of the sealing material used normally.

In FIG. 3, the first embodiment of the present invention is applied to a three-electrode surface discharge type AC plasma display panel as an example. However, configurations of the front panel 5 and the rear panel 6 are limited thereto. The present invention can be applied even when the configuration is changed in various forms. Of course, the second, third and fourth embodiments of the present invention to be described later can also be applied to other types of plasma display panels.

When the present embodiment is applied to a large area plasma display panel, a case where the strength of bonding the front panel 5 and the rear panel 6 is insufficient may occur. In this case, a separate clamp (not shown) may be used to supplement the bonding strength by pressing the front panel 5 and the rear panel 6 to be strongly bonded to each other from the outside.

4 is a partially cutaway perspective view of the plasma display panel according to the second embodiment of the present invention.

As shown in FIG. 4, the plasma display panel according to the second embodiment of the present invention further includes a second sealing material 300b disposed in parallel with the first sealing material 300a.

The front panel 5 and the rear panel 6 may have the same configuration as in the first embodiment, and the width W4 of the second sealing material 300b is the width W3 of the first sealing material 300a. May be substantially the same or different width within the range of 1 mm to 3 mm.

In the case of the large-area plasma display panel, when only the first sealing material 300a is used as in the first embodiment, the bonding strength may be insufficient or the sealing effect may be deteriorated. As a countermeasure, instead of using a separate clamp, It is highly desirable to further include the second sealing material 300b as in the embodiment because it can reduce both noise and obtain all necessary bonding strength and sealing effect.

5 is a partially cutaway perspective view of the plasma display panel according to the third embodiment of the present invention.

As shown in FIG. 5, the plasma display panel according to the third embodiment of the present invention further includes a second sealing member 400b by selecting only two opposite surfaces among four surfaces of the plasma display panel.

The front panel 5 and the rear panel 6 may have the same configuration as in the first embodiment, and the width W5 of the second sealing member 400b is the width W6 of the first sealing member 400a. Or it may have a width substantially the same as W7), or have a different width within the range of 1mm to 3mm. The surface on which the second sealing member 400b is installed may be two surfaces on the left and right sides of the boundary B (see FIG. 1) of the four surfaces of the plasma display panel. It is preferable that the second sealing member is disposed on the left and right sides so that the bearing capacity for the shear stress can be further enhanced.

6 is a partially cutaway perspective view of the plasma display panel according to the fourth embodiment of the present invention.

As shown in FIG. 6, in the plasma display panel according to the fourth embodiment of the present invention, the second sealing material 500b is disposed in parallel with the first sealing material 500a and is intermittently different from the first sealing material 500a. Is placed.

The front panel 5 and the rear panel 6 may have the same configuration as in the first, second and third embodiments, the width W9 of the second sealing material 500b being the first sealing material ( It may have a width substantially the same as the width W8 of 500a), or may have another width within a range of 1 mm to 3 mm. The surface on which the second sealing material 500b is installed may be irregularly installed where necessary along the boundary B (see FIG. 1) of the four surfaces of the plasma display panel.

According to the fourth embodiment of the present invention, the sealing effect can be sufficiently obtained, and it is possible to arrange the second sealing member 500b only in necessary portions when the bonding strength is insufficient to compensate for the bonding strength.

A frit is suitable as a material of the first or second sealing material used in the first to fourth embodiments. When the front panel and the rear panel are hermetically bonded using frits, the frit is applied to one of the two panels, the applied frit is heated, and the other panel is placed on top of the frit-coated panel. The seal bonding process is performed by aligning and pressing.

As described above, according to the present invention, the noise generated during the operation of the plasma display panel can be reduced from the experimental result that the noise generated during the operation of the plasma display panel increases as the width of the sealing material increases.

In addition, when sealing or bonding strength between the front panel and the rear panel is a problem in a large area plasma display panel, the second sealing material can be used to solve the problem.

Although the present 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 equivalent other 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 a schematic diagram of a plasma display panel.

Figure 2 is a partially cutaway perspective view of the portion A of Figure 1;

3 is a partially cutaway perspective view of the plasma display panel according to the first embodiment of the present invention;

4 is a partially cutaway perspective view of the plasma display panel according to the second embodiment of the present invention;

5 is a partially cutaway perspective view of the plasma display panel according to the third embodiment of the present invention;

6 is a partially cutaway perspective view of the plasma display panel according to the fourth embodiment of the present invention;

Explanation of symbols on main parts of drawing

1: plasma display panel 5: front panel

6: rear panel 100: sealing material

200, 300a, 400a, 500a: first sealing material

300b, 400b, 500b: second sealing material

Claims (6)

A plasma display panel in which a front panel and a rear panel are bonded and sealed by a first sealing material, And the first sealing material is disposed along a boundary of an area where the front panel and the rear panel overlap, and the width thereof is 1 mm to 3 mm. The plasma display panel of claim 1, further comprising a second sealing material for bonding the front panel and the rear panel. The plasma display panel of claim 2, wherein the second sealing member is formed continuously along a boundary of the overlapping region. The plasma display panel of claim 2, wherein the second sealing material is formed intermittently along a boundary of the overlapping area. 3. The plasma display panel of claim 2, wherein the second sealing material is formed on two surfaces facing each other among four surfaces defining the overlapping area. The display panel according to any one of claims 1 to 5, wherein at least one of the first and second seal members is formed of a frit.