JP2002216642A - T shape electrode and ac type pdp with barrier rib - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a AC type PDP(plasma display panel) with cell structure which makes discharge area for each cell enlarge by minimizing non-discharge area among cells, and also prevents discharge by fixing barrier ribs which surround each cell. SOLUTION: In this PDP, a pair of two scanning electrodes and a pair of two sustaining electrodes of a front panel are arranged alternately, and discharge regions are formed in the gaps between the scanning electrodes and the sustaining electrodes, and front barrier ribs are formed straddling a pair of each two electrodes of them. Here, the electrodes are formed as the front barrier ribs produce non-discharge regions, and also protrusion electrodes are fixed in the discharge regions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an AC type plasma display panel (PDP), and more particularly, to a non-discharge area between cells, a discharge area for each light emitting cell is enlarged, and the area around each light emitting cell is reduced. The present invention relates to an AC-type PDP having a cell structure in which partition walls are provided to prevent erroneous discharge.

[0002]

2. Description of the Related Art A PDP is formed by laminating two sheets of glass to form a lot of minute spaces, enclosing a gas, and the ultraviolet light emitted by the gas discharge excites a fluorescent material to obtain a visible light for display. It is a self-luminous display to be operated. Among them, the configuration of a conventional AC PDP will be described with reference to FIGS.

FIG. 4A shows a back panel 2 'of an AC PDP, and FIG. 4B shows a front panel 1' thereof.

FIG. 5 (b) is a cross-sectional view of an electrode structure in which the front panel 1 'is mounted on the upper side of the rear panel 2', and the respective electrodes are assembled so as to face each other at right angles. The cross-section is an assembled cross-sectional view taken along a first metal electrode 11 of a front panel 1 'to be described later and perpendicular to the panel surface at that position. Further, FIG. 5C shows X in FIG. 5B.
3 shows an X-section.

FIG. 5 (a) is a plan view of the assembled PDP, but showing a state where the glass substrate 10 of the front panel 1 'has been removed.

Hereinafter, the electrode structure will be described in detail with reference to FIGS. The front panel 1 ′ has a first composite electrode including a transparent electrode 13 such as an ITO film extending in one direction on the glass substrate 10 and a first metal electrode (Ag) 11 for a scan serving as a bus bar, and a first composite electrode adjacent to the first composite electrode. Transparent electrode 1 arranged
3 and a second metal electrode (Ag) 12 for the busbar serving as a busbar
And a second composite electrode composed of a pair of display electrode cells arranged at a predetermined first pitch P1. A transparent dielectric layer 14 is formed so as to cover them, and a thin protective film (MgO 2) is formed thereon. ) Is formed.

There is a black stripe region 19 between the display electrode cell and the adjacent cell.

On the other hand, on the rear panel 2 ', third rear metal electrodes (Ag) 21 for data are arranged at a second predetermined pitch on the glass substrate 20 in a direction orthogonal to the electrodes of the front panel 1'. The white dielectric layer 23 is formed so as to cover them.
Is formed thereon, and a rear partition wall 22 is formed along an intermediate portion of the third rear metal electrode 21, and the phosphor (R, B) is formed so as to cover the rear partition wall 22 and the white dielectric layer 23 on the bottom surface. , G) 24 are formed.

The first and second composite electrodes and the third back metal electrode 21 are disposed so as to be orthogonal to each other via a discharge gas space so as to face each other. 11 and the third electrode 21 are used to sequentially address and charge the cells to be lit in the row selected by the first electrode 11 by the first electrode 11, and the surface discharge emission is maintained by the first electrode 11 and the second electrode. This is a three-electrode surface discharge mechanism.

In FIG. 5A, W is the gap length between the rear partition walls 22. L is the first and second electrodes 11 and 12
Is the discharge electrode gap length of the cell in the vertical direction. Also,
M is a non-discharge table between cells including the first and second electrodes 11 and 12 and the black stripe region 19 between them.

Therefore, the area A of the discharge region of the cell is L × W
It is. The area B of the non-discharge region is M × W. Usually, a black stripe area 19 is formed inside the B area.

The area ratio between the light emitting area and the non-light emitting area is L /
M, and usually L to prevent erroneous discharge in the non-light emitting area.
/ M is set to about 1.

Such an AC type PDP is disclosed in, for example,
Many are disclosed in, for example, JP-A-267742.

[0014]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above points, and has as its object the following:
An electrode in which two pairs of electrodes for scanning and two pairs of electrodes for sustain on the front panel are alternately arranged, a gap between the electrodes for scanning and that for sustain is used as a discharge region, and a space between each pair of electrodes is used as a non-discharge region. It is an object of the present invention to provide an AC PDP having a large discharge area and a large light-emitting area per unit area by forming a structure and forming a front partition in a non-discharge area and providing a protruding electrode in a discharge area.

[0015]

According to the present invention, there is provided an AC-type PD having a T-shaped electrode and a front partition according to the present invention.
P is the parallel 2 for scan extending in one direction (SCAN)
A plurality of pairs of first metal electrode pairs and two parallel second metal electrode pairs for Sustain (SUSTAIN) are alternately arranged on a glass substrate, and an electrode gap in which the first metal electrode and the second metal electrode are adjacent to each other Is a discharge space of the light emitting cell, a front panel having an electrode configuration in which the center intervals of the electrode gaps are arranged at a first predetermined pitch, and a plurality of third back metal electrodes for data extending in the direction perpendicular to the above direction. Are arranged on the glass substrate at a second predetermined pitch, and a rear panel having an electrode configuration in which a rear partition rib is provided between the two panels. The front panel includes both side surfaces of the first metal electrode pair and a second metal. A T-shaped electrode formed by projecting electrodes vertically from both sides of the electrode pair toward the discharge space of the light emitting cell so that the projecting electrodes face each other at the center of the electrode gap at the second predetermined pitch. A first front partition plate formed and disposed above and over the first metal electrode pair with the T-shaped electrode as the center, and formed above and over the second metal electrode pair And a second front partition wall disposed on the rear panel, and the first and second front partition walls of the front panel are inserted between the rear partition ribs of the rear panel so that each cell is surrounded by a partition. The two panels are assembled to constitute a three-electrode surface discharge mechanism, in which addressing is performed by the first and third electrodes, and discharge is maintained by the first and second electrodes.

Further, a transparent electrode is further formed to face the gap between the first metal electrode and the second metal electrode.

In addition, the first and second front partition plates are
It is characterized by being formed on a surface of a dielectric layer formed so as to cover the first and second metal electrodes, respectively.

In addition, the gap length L between the discharge electrodes of the first and second metal electrodes, which is the length in the direction perpendicular to the first and second metal electrodes in the discharge region of the light emitting cell, and the distance between the discharge electrodes. The ratio L / M to the width M of the first and second front partition plates, which is the length in the direction perpendicular to the first and second metal electrodes of the discharge region, is at least one or more in the configuration of the three-electrode surface discharge mechanism. There is a feature.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are diagrams showing an electrode configuration of an AC type PDP having a T-shaped electrode and a front partition according to the present invention.

FIGS. 1 (a) and 1 (b) show A of this embodiment, respectively.
2 shows an electrode configuration of a rear panel 2 and a front panel 1 of a C-type PDP. As compared with FIG. 4, as compared with the conventional example, the electrode configuration of the rear panel 2 is the same as that of the conventional rear panel 2 ', but the electrode configuration of the front panel 1 is the same as that of FIG.
(B) As shown in (c), it is significantly different from the conventional front panel 1 '.

FIG. 2B is a cross-sectional view of the electrode configuration in a state where the front panel 1 is mounted on the upper side of the rear panel 2 and the respective electrodes face each other so as to be orthogonal to each other.

The cross section is an assembled cross-sectional view taken along a first metal electrode 11 of the front panel 1 described later and cut perpendicular to the panel surface at that position.

FIG. 2A shows the assembled PD of the present embodiment.
FIG. 3 is a plan view of P, with the glass substrate 10 of the front panel 1 removed.

Hereinafter, the electrode configuration of the PDP of this embodiment will be described in detail with reference to FIGS. Note that the rear panel 2 has the same configuration as the rear panel 2 ', and a description thereof will be omitted.

The front panel 1 includes a pair 11x of two parallel first metal electrodes 11 for scan (SCAN) extending in one direction on the glass substrate 10 and a SUSTAIN (SUSTAI).
N), and a pair 12x of two parallel second metal electrodes 12 are alternately arranged in a plurality of pairs.

Here, the electrode gap L where the first metal electrode 11 and the second metal electrode 12 are adjacent to each other is defined as a discharge space in the vertical direction of the light emitting cell, and the center interval of the electrode gap L is set to a first predetermined pitch P1. The arrangement of the electrodes on the front panel 1 is shown in FIG.

The front panel 1 has a first metal electrode pair 1.
Projecting electrodes 11a are provided to project the electrodes vertically outward from both sides of 1x, that is, toward the center of the light emitting cell discharge space. Similarly, the protruding electrode 12a is provided for the second metal electrode pair 12x. These protruding electrodes 11a,
12a are formed so as to face each other while maintaining a predetermined gap distance at the center of the discharge space electrode gap. The above-mentioned protruding electrodes 11a and 12a are also referred to as T-shaped electrodes 11a and 12a because they have a T-shape just including the first or second electrode.

The T-shaped electrodes 11a and 12a are arranged in the second
Are arranged at a predetermined pitch.

Further, a first front partition plate 15 formed and disposed so as to cover the upper side of the first metal electrode pair 11x with the T-shaped electrodes 11a and 12a as a center.
And a second front partition plate 16 formed over and disposed over the second metal electrode pair 12x.

The first and second front partition plates 1 of the front panel 1 are disposed in the gap W between the rear partition ribs 22 of the rear panel 2 of FIG.
The panels 1 and 2 are assembled to form a so-called three-electrode surface discharge mechanism such that the cells 5 and 16 are inserted and each cell is surrounded on all sides by a partition. FIGS. 2A and 2B show this state.

Here, as shown in FIG. 1 (b), the transparent electrode (ITO) 1 together with the T-shaped electrodes 11a and 12a is used.
3 may be formed so as to face each other while maintaining a predetermined gap distance. FIGS. 2A and 2B show a case where the transparent electrode 13 is not provided.

In FIG. 2A, L is the electrode gap length between the first and second electrodes 11 and 12 (not between 11a and 12a).
In other words, M indicates the vertical length of the electrode in the cell discharge region, and M indicates the width of the front partition plates 15 and 16, that is, indicates the vertical length of the electrode in the non-discharge region between cells. It is. W indicates the back partition wall gap length.

The reference numerals in FIGS. 1 and 2 have the same functions as those in the conventional example, and the description of the reference numerals is omitted.

FIG. 3 is a drawing for explaining the comparison of the areas of the discharge region A of the cell and the non-discharge region B between the cells. FIG.
3A shows the A / B of the embodiment of the present invention, and FIG. 3B shows the A / B of the conventional example. In order to facilitate comparison, the ratio of A / B is shown when the first predetermined pitch P1 and the second predetermined pitch P2 of the back electrode 21 are the same as P1 and P2 of the conventional example. It is.

In the case of FIG. 3B of the conventional example, the length M of the non-discharge area between cells includes the black stripe area 19 and
In order to prevent erroneous discharge, it is usually designed to be substantially equal to the gap length between the first and second electrodes. That is, L / M {1, A / B}
It was one.

In this embodiment, as shown in FIG. 3A, the non-discharge region M between cells is formed by the first electrode 11 or the second electrode 11 of the same type.
Since the electrodes 12 are arranged in parallel, the interval may be set smaller than before, and the length of M may be set to be smaller than the width of the first and second front plates 15 and 16 straddling the M. Can be.

In addition, since the cells are surrounded on all sides by the front plates 15 and 16 and erroneous discharge hardly occurs, the ratio of L / M is sufficiently larger than 1 and the design can be easily made with a margin of about 5 so that the unit is unity. The amount of light per area can be greatly improved.

Next, the operation of the above cell structure is as follows. That is, the first metal electrode for scanning 1
1 are sequentially selected from the upper side, data is charged by addressing by the first metal electrode 11 and the third back metal electrode 21 for data, and then the discharge is maintained by the first metal electrode 11 and the second metal electrode 12 for sustain. Then, the process proceeds to the next scan first metal electrode 11, and the above steps are repeated.

[0040]

The AC-type PDP of the present invention having a T-shaped electrode and a front partition has the following effects.

That is, the front panel has the scanning electrodes 2
By alternately arranging two pairs of pairs of electrodes and two pairs of sustain electrodes, the gap between the scan electrodes and the sustain electrodes is used as a discharge region of the cell, and a protruding electrode is provided therebetween. By making the non-discharge area between the two electrodes for use as a non-discharge area between cells, the length of the non-discharge area in the direction perpendicular to the electrode is significantly reduced as compared with the conventional technique, and a front partition is provided on the electrode in the non-discharge area. As a result, the ratio A / B of the discharge area A to the non-discharge area B, which prevents erroneous discharge and operates stably, can be designed to be larger than before, and an AC PDP having a large light emission area per unit area can be provided.

[Brief description of the drawings]

FIG. 1 is a structural view of an AC type PDP having a T-shaped electrode and a front partition according to the present invention.

2 (a) is a plan view and FIG. 2 (b) is an assembled sectional view of an AC type PDP having a T-shaped electrode and a front partition according to the present invention.

FIG. 3 is an explanatory diagram comparing an area ratio between a discharge region of a cell of the present invention and a non-discharge region between cells with a conventional example.

FIG. 4 (a) is a back panel of a conventional AC type PDP,
(B) is a block diagram showing a front panel.

FIG. 5 shows a conventional AC type PDP, (a) is a plan view,
(B) is an assembly sectional view, (c) is an XX sectional view of (b).

[Explanation of symbols]

1, 1 'front panel 2, 2' rear panel 10 glass substrate of front panel 11 first metal electrode for scanning 11a protruding electrode, T-shaped electrode 11x first metal electrode pair 12 second metal electrode for sustaining 12a protruding electrode, T-shaped electrode 12x 2nd metal electrode pair 13 Transparent electrode (ITO) 14 Dielectric layer 15 1st front partition board 16 2nd front partition board 17 Protective film 19 Black stripe area 20 Back panel glass substrate 21 Data Third back metal electrode for back 22 Back rib rib 23 Dielectric layer 24 Phosphor (R, B, G) A Discharge area of cell B Non-discharge area between cells L of first metal electrode and second metal electrode of each cell Discharge electrode gap length M Non-discharge length between cells (approximately equal to the width of the first and second front partition plates) P1 Center distance of discharge gap between first and second metal electrodes, first predetermined pitch H P2 third back metal electrode center spacing, second predetermined pitch W back partition wall side spacing length (substantially equal to the length of the first and second front partition plates)

Claims (4)

[Claims] A first parallel metal electrode pair for a scan extending in one direction (SCAN) and a sustainer (SUSTA).
IN) two or more pairs of second metal electrode pairs are alternately arranged on a glass substrate, and an electrode gap between the first metal electrode and the second metal electrode is used as a discharge space of a light emitting cell, and the electrode A front panel having an electrode configuration in which the center intervals of the gaps are arranged at a first predetermined pitch; and a plurality of third back metal electrodes for data extending in a direction perpendicular to the direction, the center intervals of which are arranged on a glass substrate at a second predetermined pitch. And a rear panel having an electrode configuration in which rear partition ribs are arranged between the first metal electrode pair and the second metal electrode pair. T-shaped electrodes formed so that the electrodes protrude vertically toward the discharge space so that the protruding electrodes face each other at the center of the electrode gap are arranged at the second predetermined pitch. Centered A first front partition plate disposed to form on its upper side over the first metallic electrode pair, the second
A second electrode formed and disposed over the metal electrode pair.
The first and second front partition walls of the front panel are inserted between the rear partition ribs of the rear panel, and the two panels are assembled so that each cell is surrounded by a partition wall. An AC having a T-shaped electrode and a front partition wall, comprising an electrode surface discharge mechanism, wherein addressing is performed by first and third electrodes, and discharge is maintained by the first and second electrodes. Type PDP. 2. The T-shaped electrode and the front partition according to claim 1, wherein a transparent electrode is further formed in an electrode gap between the first metal electrode and the second metal electrode. AC PDP having. 3. The device according to claim 1, wherein the first and second front partition walls are formed on a surface of a dielectric layer formed to cover the first and second metal electrodes, respectively. Or an AC-type PD having a T-shaped electrode and a front partition wall according to 2.
P. 4. The first and second discharge regions of the light emitting cell.
A first metal electrode and a second metal electrode,
The ratio L between the discharge electrode gap length L of the metal electrode and the width M of the first and second front partition plates, which is the length of the non-discharge region between the cells in the direction perpendicular to the first and second metal electrodes. 4. An AC type PDP having a T-shaped electrode and a front partition according to claim 1, wherein / M is a configuration of at least one or more three-electrode surface discharge mechanism.