KR100312922B1 - Barrier rib structure of Plasma Display Panel - Google Patents

Abstract

PURPOSE: A barrier rib structure for a plasma display panel is provided to maximize a phosphor-coated area by forming ribs to be protruded from barrier parts of discharging space. CONSTITUTION: The barrier rib structure for a plasma display panel is applied at a back panel(103) of the plasma display panel. The barrier rib includes a protruding part formed at each of side surfaces of the barrier rib(103) along sustain electrodes. The protruding part makes it possible to increase the area of the side surface of the barrier rib(103), such that a coating area of a phosphor-coated film(5) is increased. When the coating area of the phosphor-coated film(5), the discharging of the phosphor-coated film(5) is improved. Further, the increased area of the side surface prevents a fault discharging between near cells.

Description

Barrier rib structure of plasma display panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP), and more particularly, to a barrier rib structure of a PDP for increasing an emission area of a fluorescent film applied to a discharge space.

1 illustrates a structure of a general three-electrode surface discharge PDP. Referring to the structure, the front substrate 1, which is a display surface of an image, and the rear substrate 2 disposed in parallel with a predetermined distance therebetween The front substrate (1) is formed on the plurality of sustain electrode lines (6,7) and the plurality of sustain electrode lines (6,7) formed at regular intervals on the opposite surface of the back substrate (2) A dielectric layer 8 for limiting discharge current and a protective layer 9 formed on the dielectric layer 8 to protect the sustain electrode lines 6 and 7, and a plurality of discharges on the back substrate 2. A stripe-type barrier rib 3 forming a space, a plurality of address electrode lines 4 formed orthogonal to the sustain electrode lines 6 and 7 between the barrier ribs 3, and an inner surface of each of the discharge spaces. It is applied to the corresponding address electrode line 4 on both side walls and back substrate surface. When composed of a R, G, B phosphor 5 to emit visible light.

As shown in FIG. 2, the pair of sustain electrode lines have a width of about 300 μm and are composed of a transparent electrode line 6 and a bus electrode line 7, and the transparent electrode lines 6 are disposed at both ends. When a discharge voltage is supplied, mutual surface discharge occurs in a corresponding discharge space, and the bus electrode line 7 is a metal material having a width of about 50 to 100 μm and is formed on each of the transparent electrode lines 6 to form a transparent electrode line. Prevent voltage drop caused by resistance.

FIG. 2 is a cross-sectional view of the plasma display device after the upper and lower substrates of FIG. 1 are combined, and the upper structure is rotated 90 degrees for better understanding.

The image display process of any cell in the PDP according to the prior art configured as described above is as follows.

First, when the discharge start voltage of 150V to 300V is supplied to the transparent electrode line 6 and the address electrode 4, wall charges are formed on the inner surface of the corresponding discharge space.

Thereafter, when an address discharge voltage is supplied to the transparent electrode line 6 and the address electrode line 4, an address discharge occurs between the transparent electrode line 6 and the address electrode line 4. In other words, an electric field is generated inside the cell, and the trace electrons in the discharge gas are accelerated, the accelerated electrons and the neutral particles in the gas collide with each other, and are ionized into electrons and ions, and another collision between the ionized electrons and the neutral particles is performed. Neutral particles are ionized into electrons and ions at a rapid rate, and the discharge gas becomes plasma, and vacuum ultraviolet (UV) is generated. The generated ultraviolet rays excite the fluorescent layer 5 to generate visible light, and when the generated visible light is emitted to the outside through the front substrate 1, light emitted from any cell can be recognized from the outside, that is, image display. do.

Subsequently, when a sustain discharge voltage of 150 V or more is supplied to the transparent electrode line 6, sustain discharge occurs between the transparent electrode lines 6 so that light emission of any cell is maintained for a predetermined time.

Particularly, in the PDP, the application position and area of the phosphor emitting visible light in the discharge space with respect to the same vacuum ultraviolet ray have a significant influence on the luminance characteristics and the emission luminance is improved as the application area is enlarged. In the partition and the discharge structure, there is a problem that it is difficult to secure a phosphor coating surface any more.

Therefore, in recent years, the development of the cell structure of the PDP for increasing the coating area of the phosphor to improve the luminance characteristics has been an urgent research problem.

The present invention has been invented to solve the problems and research problems of the prior art as described above by protruding the partition wall at the boundary of each discharge space, so that the coating area of the fluorescent film is maximized, the luminance by the phosphor excitation during discharge The purpose is to improve.

1 is an exploded perspective view of an upper and a lower substrate of a conventional plasma display device.

2 is a cross-sectional view of a cell of a conventional plasma display device.

3 is a comparison between the conventional and the present invention partition wall structure,

(A) is a conventional stripe type shape.

(B) is a figure according to this invention.

Figure 4 is a perspective view of the lower panel panel to which the partition wall of the present invention is applied.

Figure 5 (a) (b) is a partition wall shape according to another embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

1: Front board 2: Back board

3: bulkhead 4: address electrode

5: phosphor 6: transparent electrode

7 bus electrode 8 dielectric layer

9: protective layer 103: partition wall

103 ': overhang

In the barrier rib structure of the AC plasma display device of the present invention, a sustain electrode, a dielectric layer, and a protective layer are sequentially formed on a first substrate of two substrates coupled in parallel. In an AC plasma display panel structure in which an address electrode is arranged in a direction intersecting with an electrode, and a plurality of stripe type partition walls are formed between the first and second substrates to separate discharge spaces between other fluorescent films. Is a projection which protrudes from the side surface in the extending direction of the sustain electrode, wherein the projection is a partition wall that partitions between adjacent cells in the address electrode extending direction, and the protrusion is at least in communication with adjacent cells in the address electrode extending direction. Is formed to; The other color phosphor is formed on an inner surface of a cell formed by the barrier rib and its protrusion.

Preferably, the barrier rib protrusion is formed on both sides of the stripe barrier rib in the extending direction of the sustain electrode.

The barrier rib protrusion may be formed on one side of the stripe barrier rib in the extending direction of the sustain electrode.

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

In the plasma display device to which the present invention is applied, the overall configuration and operation state except for the barrier rib structure 103 are the same as in the prior art, and the description thereof will be omitted and the same reference numerals will be given.

Figure 3 is a comparison of the conventional bulkhead structure according to the embodiment of the present invention, in the conventional structure of (a) the partition wall 3 is formed of a spry type, in the structure of the present invention (b) side of the partition wall 103 4 shows a PDP lower plate structure to which the protrusion 103 'is formed at regular intervals.

In the barrier rib structure of the present invention, as the sidewall area of the barrier rib 103 is increased due to the shape of the protrusion 103 ', the coating area of the fluorescent film 5 is naturally increased to increase the phosphor excitation due to plasma discharge upon application of the discharge voltage. Thus, the luminance of light emitted from each cell is improved.

In addition, at the same time, the protrusion 103 ′ of the partition wall may have an effect of serving as a function of blocking misdischarge between adjacent cells.

At this time, if the protrusion 103 'of the partition wall completely blocks the discharge space boundary, the gas flow is not smooth inside the panel during the gas injection / exhaust process during the manufacturing process of the PDP. It should be formed so as not to completely block it.

5 (a) (b) shows the partition shape according to another embodiment of the present invention, as shown in (a) and the splice type and the protrusion type are alternately arranged, or (b) protruding only one side Implementing the partition wall shape can exhibit the same effects as described above.

As described above, the technical gist of the present invention is that the barrier rib is formed by protruding the boundary portion of each discharge space to increase the coating area of the fluorescent film while minimizing the decrease in the aperture ratio of the discharge space. Rather, all other embodiments derived by forming protrusions on the sides of the partition structure are included in the technical scope.

As described above, the present invention has the effect of increasing the fluorescent film coating area of the unit cell to improve luminance compared to the conventional stripe type barrier rib structure and to prevent mis-discharge between adjacent cells.

Claims (3)

A sustain electrode, a dielectric layer, and a protective layer are sequentially formed on a first substrate of two substrates coupled in parallel, and an address electrode is arranged in a direction crossing the sustain electrode on a second substrate, and between the first and second substrates. In the AC type plasma display panel structure in which a plurality of stripe-type partition walls for separating discharge spaces between other color fluorescent films are formed, The barrier rib is formed with a protrusion projecting from the side in the extending direction of the sustain electrode, and a single protrusion or a pair of protrusions facing in the sustain electrode extending direction divides between adjacent cells in the address electrode extension direction. The protrusions are formed so as to communicate at least between adjacent cells in an address electrode extending direction; Wherein the other color fluorescent film is formed on the inner surface of the cell formed by the partition wall and the protrusion, and the fluorescent film of each color is alternately arranged in a stripe shape extending in the address electrode extension direction. The method of claim 1, And the partition protrusions are formed on both sides of the stripe partition wall in the extending direction of the sustain electrode. The method of claim 1, And the barrier rib protrusion is formed on one side of the stripe barrier rib in the extending direction of the sustain electrode.