KR100708726B1 - Plasma display panel - Google Patents

Abstract

It is an object of the present invention to provide a plasma display panel having a novel structure capable of increasing luminous efficiency. To this end, in the present invention, the first substrate; A second substrate arranged in parallel with the first substrate; A partition wall disposed between the first substrate and the second substrate and defining a plurality of discharge cells together with the first substrate and the second substrate and formed of a dielectric; An address electrode disposed on the first substrate; A dielectric layer covering the address electrode; A sustain discharge electrode pair disposed in the partition wall and disposed in a direction crossing the address electrode; A phosphor layer formed to cover at least a portion of a wall surface of the discharge cell; And a discharge gas in the discharge cell.

Description

Plasma display panel {Plasma display panel}

1 is a partially separated perspective view schematically showing a configuration of a conventional plasma display panel.

2 is a partial cutaway perspective view schematically showing a configuration of a plasma display panel according to a first embodiment of the present invention;

3 is a cross-sectional view taken along the line III-III of FIG.

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

5 is a cross-sectional view taken along the line V-V of FIG.

<Description of the symbols for the main parts of the drawings>

30, 130, 230: second panel 31: second substrate

32: sustain discharge electrode 33: bus electrode

40, 140, 240: first panel 41: first substrate

42: address electrode 43: dielectric layer

44, 144: Partition 45, 145: Phosphor Layer

100, 200, 300: plasma display panel

132: second electrode portion of the X electrode 133: first electrode portion of the X electrode

134: second electrode portion of Y electrode 135: first electrode portion of Y electrode

The present invention relates to a plasma display panel, and more particularly, to a plasma display panel in which power consumption is reduced and discharge efficiency is improved.

The plasma display panel is a flat panel display panel that displays an image by using a gas discharge phenomenon, and has various display capacities such as display capacity, brightness, contrast, afterimage, and viewing angle, compared to other display devices. In addition, it is being spotlighted as a next-generation flat panel display panel that can replace a CRT because it is thin and can display a large screen.

FIG. 1 is a partially separated perspective view schematically showing the configuration of one embodiment of a three-electrode surface discharge type plasma display panel disclosed in Japanese Patent Laid-Open No. 1998-172442.

Referring to FIG. 1, the plasma display panel 100 is formed by a first panel 40, a second panel 30 coupled to the first panel 40, and the first panel 40 and the second panel 30. A partition wall 45 is formed to partition the space to form a discharge cell.

The first panel 40 includes a first substrate 41, an address electrode 42, a first dielectric 43, a partition 44, and a phosphor 45. A plurality of address electrodes 42 may be formed on the first substrate 41 in a predetermined pattern, for example, a stripe pattern. Here, the longitudinal direction of the address electrode 42 is formed to cross the longitudinal direction of the sustain discharge electrode 32. The first dielectric 43 is formed on the first substrate 41 to fill the address electrode 42. A partition wall 44 is formed on the first dielectric 43. The partition wall 44 is formed to be substantially parallel to the address electrode 42, as shown in FIG. 1. The phosphor 45 is applied on the side of the partition wall 44 on the first dielectric 43.

On the other hand, the second panel 30 serving as an image display portion includes a second substrate 31, a sustain discharge electrode 32, a bus electrode 33, a second dielectric 34 and a protective film layer 35. do.

On the second substrate 31, a plurality of pairs of sustain discharge electrodes 32 may be formed in a predetermined pattern, for example, a stripe pattern. In order to improve the electrical resistance of the sustain discharge electrode 32, a bus electrode 33 made of a material having excellent electrical conductivity is formed to be in contact with the sustain discharge electrode 32. The second dielectric 34 is formed on the second substrate 31 to fill the sustain discharge electrode 32 and the bus electrode 33, and the passivation layer 35 is provided on the second dielectric 34. Can be.

The plasma display panel having the above configuration is excited by the ultraviolet rays generated by the plasma discharge to generate the chief ray in the phosphor layer, and displays the image using the same. However, in the case of such a plasma display panel, there is a disadvantage in that the luminous efficiency is lowered because the luminance is lower than the power consumption in actual driving, and thus, there is a great need for a solution to this problem.

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a plasma display panel having a new structure that can increase the luminous efficiency.

An object of the present invention as described above, the first substrate; A second substrate arranged in parallel with the first substrate; A partition wall disposed between the first substrate and the second substrate and defining a plurality of discharge cells together with the first substrate and the second substrate and formed of a dielectric; An address electrode disposed on the first substrate; A dielectric layer covering the address electrode; A sustain discharge electrode pair disposed in the partition wall and disposed in a direction crossing the address electrode; A phosphor layer formed to cover at least a portion of a wall surface of the discharge cell; And a plasma display panel including a discharge gas in the discharge cell.

Here, the sustain discharge electrode pair is preferably composed of an X electrode and a Y electrode to which a separate voltage is applied.

Here, it is preferable that a pair of the X electrode and the Y electrode is disposed in one partition wall, respectively.

Here, one of the pair of X electrodes and Y electrodes is preferably provided to contact the dielectric layer.

Here, the other one of the pair of X electrode and the Y electrode is preferably installed so as to be completely wrapped in the dielectric of the partition wall.

Here, the partition wall is preferably made in a matrix form including a portion including the sustain discharge electrode pair and a portion extending in a direction parallel to the direction in which the address electrode extends.

In addition, the object of the present invention as described above, the first substrate; A second substrate arranged in parallel with the first substrate; A partition wall disposed between the first substrate and the second substrate and defining a plurality of discharge cells together with the first substrate and the second substrate and formed of a dielectric; An address electrode disposed on the first substrate; A dielectric layer covering the address electrode; A sustain discharge electrode pair covered by the partition wall and disposed in a direction substantially crossing the address electrode; A phosphor layer formed to cover at least a portion of a wall surface of the discharge cell; And a discharge gas in the discharge cell, wherein the sustain discharge electrode pair includes an X electrode and a Y electrode each having two electrodes, and the X electrode and the Y electrode are respectively formed in contact with the dielectric layer. And a second electrode portion formed in contact with the second substrate side.

Here, it is preferable that the one partition wall covers the first electrode portion and the second electrode portion of the X electrode, and the first electrode portion and the second electrode portion of the Y electrode.

Here, the partition wall is preferably made in a matrix form including a portion including the sustain discharge electrode pair and a portion extending in a direction parallel to the direction in which the address electrode extends.

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

2 is a partial cutaway perspective view of the plasma display panel according to the first embodiment of the present invention, Figure 3 is a line III-III in the plasma display panel according to the first embodiment of the present invention shown in FIG. A diagram showing a cross section of a discharge cell taken along the side is shown.

As shown in FIG. 2, the plasma display panel 200 according to the present invention includes a first panel 140, a second panel 130, and a partition wall 144.

The first panel 140 includes a first substrate 41, an address electrode 42, and a dielectric layer 43.

The first substrate 41 may be made of a material such as soda lime glass, and a plurality of address electrodes 42 may be formed on a top surface thereof in a predetermined pattern, for example, in a stripe shape.

The first dielectric 43 is formed on the first substrate 41 to fill the address electrode 42, and is made of a dielectric having a dielectric constant in the range of about 10.0 to about 15.0.

The partition wall 144 is disposed between the first panel 140 and the second panel 130 to partition a discharge cell together with the first panel 140 and the second panel 130. The partition wall 144 is formed in a direction substantially perpendicular to the address electrode 42. On the other hand, the partition wall 414 is shown in the form of a stripe, it is possible to change the shape, such as matrix form or honeycomb shape.

A storage discharge electrode pair is disposed inside the partition 144. The sustain discharge electrode pair includes two X electrodes 132 and 133 and two Y electrodes 134 and 135. The X electrode and the Y electrode include first electrode parts 133 and 135 and second electrode parts 132 and 134, respectively, and the first electrode parts 133 and 135 and the second electrode parts 132 and 134, respectively. ) Are all extended in a direction substantially perpendicular to the address electrodes 42 in the direction in which the partition wall 144 extends.

The first electrode portions 133 and 135 are formed to be in contact with the dielectric layer 43, and the second electrode portions 132 and 134 are disposed above the first electrode portions 133 and 135. The second electrode portions 132 and 134 are disposed to be entirely covered by a dielectric forming the partition 144.

The first and second electrode portions 132, 133, 134, and 135 are all made of a material having good electrical conductivity.

Meanwhile, a phosphor layer 145 is further formed to cover at least a portion of the wall surface of the discharge cell. The phosphor layer 145 is made of a PL (PhotoLuminescence) type phosphor which is excited by ultraviolet rays to generate visible light. The material used for the phosphor layer 145 may include (Y, Gd) BO ₃ : Eu ³⁺ as a red light emitting phosphor, and may be Zn ₂ Si0 ₄ : Mn ²⁺ as a green light emitting phosphor. In addition, the blue light emitting phosphor may include BaMgAl ₁₀ O ₁₇ : Eu ²⁺ .

The plasma display panel 200 of the first embodiment of the present invention having the above configuration operates in the following manner.

As shown in FIG. 3, the sustain discharge occurs between the first electrode portion 133 of the X electrode and the first electrode portion 135 of the Y electrode, which are disposed to face each other, and also the second electrode portion of the X electrode. 132 and the second electrode portion 134 of the Y electrode. Accordingly, the surface discharge effect and the counter discharge effect can be simultaneously enjoyed in the sustain discharge, so that the discharge occurs more smoothly and the discharge efficiency is increased. In other words, wall charge, which is an advantage of surface discharge, can be accumulated sufficiently on the surface of a partition wall or dielectric layer, and an electric field, which is an advantage of opposing inversion, is concentrated in the center of the discharge space to increase plasma density and increase discharge efficiency. It becomes possible.

On the other hand, the address discharge may be made between any one of the first electrode portion 133, 135 and the second electrode portion 132, 134 and the address electrode 42, a plurality of electrodes and It may also occur between the address electrode 42.

FIG. 4 is a partially cutaway perspective view of the plasma display panel according to the second embodiment of the present invention, and FIG. 5 is taken along the line VV in the plasma display panel according to the second embodiment of the present invention shown in FIG. A drawing showing a cross section of the discharge cell is shown.

As shown in FIG. 4, the plasma display panel 300 according to the second embodiment of the present invention includes a first panel 140, a second panel 130, and a partition wall 144.

The difference between the plasma display panel of the first embodiment and the plasma display panel of the first embodiment described above is that the positions of the second electrode portions are in contact with the side of the second substrate 31 constituting the second panel 140. Even when configured in this way, it works as described above and can enjoy the same effects as described above.

That is, as shown in FIG. 5, the sustain discharge occurs between the first electrode portion 133 of the X electrode and the first electrode portion 135 of the Y electrode, which are disposed to face each other, and further, the second electrode of the X electrode. It occurs between the electrode portion 132 and the second electrode portion 134 of the Y electrode. Accordingly, the surface discharge effect and the counter discharge effect can be simultaneously enjoyed in the sustain discharge, so that the discharge occurs more smoothly and the discharge efficiency is increased.

The contents of the components constituting the present embodiment are substantially the same as in the first embodiment.

Meanwhile, in describing the embodiments of the present invention, the drawings do not specifically indicate the front and rear sides, but in the case of the transmissive plasma display panel in which the phosphor layer is located in the front, or the reflective plasma display in which the phosphor layer is located in the rear. Regardless of the panel, the present invention can be applied.

As described above, according to the plasma display panel of the present invention, the wall charge, which is an advantage of surface discharge, can be sufficiently accumulated on the partition wall or the dielectric layer surface, and the electric field, which is the advantage of opposing inversion, is concentrated in the center of the discharge space and the plasma is discharged. All of the benefits of higher density and higher discharge efficiency are available. Accordingly, the discharge occurs more smoothly during the sustain discharge and the discharge efficiency increases.

Although the present invention has been described with reference to the embodiments illustrated in the accompanying drawings, it is merely exemplary, and various modifications and equivalent other embodiments are possible from those skilled in the art to which the present invention pertains. You will understand the point. Therefore, the true scope of protection of the present invention should be defined by the appended claims.

Claims (9)

delete delete delete A first substrate; A second substrate arranged in parallel with the first substrate; A partition wall disposed between the first substrate and the second substrate and defining a plurality of discharge cells together with the first substrate and the second substrate and formed of a dielectric; An address electrode disposed on the first substrate; A dielectric layer covering the address electrode; A sustain discharge electrode pair disposed in the partition wall and disposed in a direction crossing the address electrode; A phosphor layer formed to cover at least a portion of a wall surface of the discharge cell; And A discharge gas in the discharge cell; The sustain discharge electrode pair is composed of an X electrode and a Y electrode to which a separate voltage is applied, A pair of the X electrode and the Y electrode are each disposed in one partition wall, And one of the pair of X and Y electrodes is in contact with the dielectric layer. The method of claim 4, wherein And the other one of the pair of X electrodes and Y electrodes is installed to be completely surrounded by the dielectric of the partition wall. The method of claim 4, wherein And the partition wall is formed in a matrix form including a portion including the sustain discharge electrode pair and a portion extending in a direction parallel to a direction in which the address electrode extends. A first substrate; A second substrate arranged in parallel with the first substrate; A partition wall disposed between the first substrate and the second substrate and defining a plurality of discharge cells together with the first substrate and the second substrate and formed of a dielectric; An address electrode disposed on the first substrate; A dielectric layer covering the address electrode; A sustain discharge electrode pair covered by the partition wall and disposed in a direction substantially crossing the address electrode; A phosphor layer formed to cover at least a portion of a wall surface of the discharge cell; And A discharge gas in the discharge cell; The sustain discharge electrode pair includes an X electrode and a Y electrode each consisting of two electrodes, And the X electrode and the Y electrode respectively include a first electrode portion formed in contact with the dielectric layer and a second electrode portion formed in contact with the second substrate side. The method of claim 7, wherein And the first electrode portion and the second electrode portion of the X electrode, and the first electrode portion and the second electrode portion of the Y electrode are covered by the one partition wall. The method of claim 7, wherein And the partition wall is formed in a matrix form including a portion including the sustain discharge electrode pair and a portion extending in a direction parallel to a direction in which the address electrode extends.

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